Merge pull request #2537 from penpot/alotor-autolayout-v2

Autolayout & refactor transformations

CHANGES.md

@@ -4,8 +4,11 @@
 
 ### :boom: Breaking changes & Deprecations
 ### :sparkles: New features
+
+- Adds layout flex functionality for boards
 - Better overlays interactions on boards inside boards [Taiga #4386](https://tree.taiga.io/project/penpot/us/4386)
 - Show board miniature in manual overlay setting [Taiga #4475](https://tree.taiga.io/project/penpot/issue/4475)
+
 ### :bug: Bugs fixed
 
 - Add title to color bullets [Taiga #4218](https://tree.taiga.io/project/penpot/task/4218)

common/src/app/common/geom/matrix.cljc

@@ -252,3 +252,21 @@
       (update :d mth/precision 4)
       (update :e mth/precision 4)
       (update :f mth/precision 4)))
+
+(defn transform-point-center
+  "Transform a point around the shape center"
+  [point center matrix]
+  (if (and (some? point) (some? matrix) (some? center))
+    (gpt/transform
+     point
+     (multiply (translate-matrix center)
+               matrix
+               (translate-matrix (gpt/negate center))))
+    point))
+
+(defn move?
+  [{:keys [a b c d _ _]}]
+  (and (mth/almost-zero? (- a 1))
+       (mth/almost-zero? b)
+       (mth/almost-zero? c)
+       (mth/almost-zero? (- d 1))))

common/src/app/common/geom/point.cljc

@@ -5,7 +5,7 @@
 ;; Copyright (c) KALEIDOS INC
 
 (ns app.common.geom.point
-  (:refer-clojure :exclude [divide min max])
+  (:refer-clojure :exclude [divide min max abs])
   (:require
    #?(:cljs [cljs.pprint :as pp]
       :clj  [clojure.pprint :as pp])
@@ -328,6 +328,13 @@
       (update :x #(if (mth/almost-zero? %) 0.001 %))
       (update :y #(if (mth/almost-zero? %) 0.001 %))))
 
+
+(defn abs
+  [point]
+  (-> point
+      (update :x mth/abs)
+      (update :y mth/abs)))
+
 ;; --- Debug
 
 (defmethod pp/simple-dispatch Point [obj] (pr obj))

common/src/app/common/geom/shapes.cljc

@@ -14,7 +14,6 @@
    [app.common.geom.shapes.constraints :as gct]
    [app.common.geom.shapes.corners :as gsc]
    [app.common.geom.shapes.intersect :as gin]
-   [app.common.geom.shapes.layout :as gcl]
    [app.common.geom.shapes.modifiers :as gsm]
    [app.common.geom.shapes.path :as gsp]
    [app.common.geom.shapes.rect :as gpr]
@@ -28,7 +27,7 @@
   rotation of each shape. Mainly used for multiple selection."
   [shapes]
   (->> shapes
-       (map (comp gpr/points->selrect :points gtr/transform-shape))
+       (map (comp gpr/points->selrect :points))
        (gpr/join-selrects)))
 
 (defn translate-to-frame
@@ -160,37 +159,31 @@
 (dm/export gpr/join-rects)
 (dm/export gpr/join-selrects)
 (dm/export gpr/contains-selrect?)
+(dm/export gpr/contains-point?)
+(dm/export gpr/close-selrect?)
 
 (dm/export gtr/move)
 (dm/export gtr/absolute-move)
 (dm/export gtr/transform-matrix)
 (dm/export gtr/transform-str)
 (dm/export gtr/inverse-transform-matrix)
-(dm/export gtr/transform-point-center)
 (dm/export gtr/transform-rect)
 (dm/export gtr/calculate-adjust-matrix)
 (dm/export gtr/update-group-selrect)
 (dm/export gtr/update-mask-selrect)
-(dm/export gtr/resize-modifiers)
-(dm/export gtr/change-orientation-modifiers)
-(dm/export gtr/rotation-modifiers)
-(dm/export gtr/merge-modifiers)
+(dm/export gtr/update-bool-selrect)
 (dm/export gtr/transform-shape)
 (dm/export gtr/transform-selrect)
 (dm/export gtr/transform-selrect-matrix)
 (dm/export gtr/transform-bounds)
-(dm/export gtr/modifiers->transform)
-(dm/export gtr/empty-modifiers?)
 (dm/export gtr/move-position-data)
-(dm/export gtr/apply-transform)
+(dm/export gtr/apply-objects-modifiers)
+(dm/export gtr/parent-coords-rect)
+(dm/export gtr/parent-coords-points)
 
 ;; Constratins
 (dm/export gct/calc-child-modifiers)
 
-;; Layout
-(dm/export gcl/calc-layout-data)
-(dm/export gcl/calc-layout-modifiers)
-
 ;; PATHS
 (dm/export gsp/content->selrect)
 (dm/export gsp/transform-content)
@@ -203,7 +196,7 @@
 (dm/export gin/rect-contains-shape?)
 
 ;; Bool
-(dm/export gsb/update-bool-selrect)
+
 (dm/export gsb/calc-bool-content)
 
 ;; Constraints
@@ -216,3 +209,4 @@
 
 ;; Modifiers
 (dm/export gsm/set-objects-modifiers)
+

common/src/app/common/geom/shapes/bool.cljc

@@ -7,8 +7,6 @@
 (ns app.common.geom.shapes.bool
   (:require
    [app.common.data :as d]
-   [app.common.geom.shapes.path :as gsp]
-   [app.common.geom.shapes.transforms :as gtr]
    [app.common.path.bool :as pb]
    [app.common.path.shapes-to-path :as stp]))
 
@@ -25,17 +23,5 @@
         (into [] extract-content-xf (:shapes shape))]
     (pb/content-bool (:bool-type shape) shapes-content)))
 
-(defn update-bool-selrect
-  "Calculates the selrect+points for the boolean shape"
-  [shape children objects]
 
-  (let [bool-content     (calc-bool-content shape objects)
-        shape            (assoc shape :bool-content bool-content)
-        [points selrect] (gsp/content->points+selrect shape bool-content)]
-
-    (if (and (some? selrect) (d/not-empty? points))
-      (-> shape
-          (assoc :selrect selrect)
-          (assoc :points points))
-      (gtr/update-group-selrect shape children))))
 

common/src/app/common/geom/shapes/common.cljc

@@ -8,7 +8,8 @@
   (:require
    [app.common.data :as d]
    [app.common.geom.matrix :as gmt]
-   [app.common.geom.point :as gpt]))
+   [app.common.geom.point :as gpt]
+   [app.common.geom.shapes.rect :as gpr]))
 
 (defn center-rect
   [{:keys [x y width height]}]
@@ -31,6 +32,22 @@
     (gpt/point (/ (+ minx maxx) 2.0)
                (/ (+ miny maxy) 2.0))))
 
+(defn center-bounds [[a b c d]]
+  (let [xa (:x a)
+        ya (:y a)
+        xb (:x b)
+        yb (:y b)
+        xc (:x c)
+        yc (:y c)
+        xd (:x d)
+        yd (:y d)
+        minx (min xa xb xc xd)
+        miny (min ya yb yc yd)
+        maxx (max xa xb xc xd)
+        maxy (max ya yb yc yd)]
+    (gpt/point (/ (+ minx maxx) 2.0)
+               (/ (+ miny maxy) 2.0))))
+
 (defn center-shape
   "Calculate the center of the shape."
   [shape]
@@ -49,3 +66,8 @@
                       (gpt/transform point (gmt/multiply prev matrix post)))]
        (mapv tr-point points))
      points)))
+
+(defn transform-selrect
+  [{:keys [x1 y1 x2 y2] :as sr} matrix]
+  (let [[c1 c2] (transform-points [(gpt/point x1 y1) (gpt/point x2 y2)] matrix)]
+    (gpr/corners->selrect c1 c2)))

common/src/app/common/geom/shapes/constraints.cljc

@@ -6,14 +6,20 @@
 
 (ns app.common.geom.shapes.constraints
   (:require
-   [app.common.geom.matrix :as gmt]
    [app.common.geom.point :as gpt]
    [app.common.geom.shapes.common :as gco]
+   [app.common.geom.shapes.intersect :as gsi]
+   [app.common.geom.shapes.points :as gpo]
    [app.common.geom.shapes.rect :as gre]
+   [app.common.geom.shapes.transforms :as gst]
    [app.common.math :as mth]
+   [app.common.types.modifiers :as ctm]
    [app.common.uuid :as uuid]))
 
 ;; Auxiliary methods to work in an specifica axis
+(defn other-axis [axis]
+  (if (= :x axis) :y :x))
+
 (defn get-delta-start [axis rect tr-rect]
   (if (= :x axis)
     (- (:x1 tr-rect) (:x1 rect))
@@ -29,6 +35,11 @@
     (- (:width tr-rect) (:width rect))
     (- (:height tr-rect) (:height rect))))
 
+(defn get-delta-scale [axis rect tr-rect]
+  (if (= :x axis)
+    (/ (:width tr-rect) (:width rect))
+    (/ (:height tr-rect) (:height rect))))
+
 (defn get-delta-center [axis center tr-center]
   (if (= :x axis)
     (- (:x tr-center) (:x center))
@@ -53,78 +64,160 @@
     (:width rect)
     (:height rect)))
 
+(defn right-vector
+  [child-points parent-points]
+  (let [[p0 p1 p2 _] parent-points
+        [_c0 c1 _ _] child-points
+        dir-v (gpt/to-vec p0 p1)
+        cp (gsi/line-line-intersect c1 (gpt/add c1 dir-v) p1 p2)]
+    (gpt/to-vec c1 cp)))
+
+(defn left-vector
+  [child-points parent-points]
+
+  (let [[p0 p1 _ p3] parent-points
+        [_ _ _ c3] child-points
+        dir-v (gpt/to-vec p0 p1)
+        cp (gsi/line-line-intersect c3 (gpt/add c3 dir-v) p0 p3)]
+    (gpt/to-vec c3 cp)))
+
+(defn top-vector
+  [child-points parent-points]
+
+  (let [[p0 p1 _ p3] parent-points
+        [c0 _ _ _] child-points
+        dir-v (gpt/to-vec p0 p3)
+        cp (gsi/line-line-intersect c0 (gpt/add c0 dir-v) p0 p1)]
+    (gpt/to-vec c0 cp)))
+
+(defn bottom-vector
+  [child-points parent-points]
+
+  (let [[p0 _ p2 p3] parent-points
+        [_ _ c2 _] child-points
+        dir-v (gpt/to-vec p0 p3)
+        cp (gsi/line-line-intersect c2 (gpt/add c2 dir-v) p2 p3)]
+    (gpt/to-vec c2 cp)))
+
+(defn center-horizontal-vector
+  [child-points parent-points]
+
+  (let [[p0 p1 _ p3] parent-points
+        [_ c1 _ _] child-points
+
+        dir-v (gpt/to-vec p0 p1)
+
+        p1c (gpt/add p0 (gpt/scale dir-v 0.5))
+        p2c (gpt/add p3 (gpt/scale dir-v 0.5))
+
+        cp (gsi/line-line-intersect c1 (gpt/add c1 dir-v) p1c p2c)]
+
+    (gpt/to-vec c1 cp)))
+
+(defn center-vertical-vector
+  [child-points parent-points]
+  (let [[p0 p1 p2 _] parent-points
+        [_ c1 _ _] child-points
+
+        dir-v (gpt/to-vec p1 p2)
+
+        p3c (gpt/add p0 (gpt/scale dir-v 0.5))
+        p2c (gpt/add p1 (gpt/scale dir-v 0.5))
+
+        cp (gsi/line-line-intersect c1 (gpt/add c1 dir-v) p3c p2c)]
+
+    (gpt/to-vec c1 cp)))
+
+(defn start-vector
+  [axis child-points parent-points]
+  (let [pos-vector
+        (cond (= :x axis) left-vector
+              (= :y axis) top-vector)]
+    (pos-vector child-points parent-points)))
+
+(defn end-vector
+  [axis child-points parent-points]
+  (let [pos-vector
+        (cond (= :x axis) right-vector
+              (= :y axis) bottom-vector)]
+    (pos-vector child-points parent-points)))
+
+(defn center-vector
+  [axis child-points parent-points]
+  ((if (= :x axis) center-horizontal-vector center-vertical-vector) child-points parent-points))
+
+(defn displacement
+  [before-v after-v]
+  (let [angl (gpt/angle-with-other before-v after-v)
+        sign (if (mth/close? angl 180) -1 1)
+        length (* sign (gpt/length before-v))]
+    (if (mth/almost-zero? length)
+      after-v
+      (gpt/subtract after-v (gpt/scale (gpt/unit after-v) length)))))
+
+(defn side-vector
+  [axis [c0 c1 _ c3]]
+  (if (= axis :x)
+    (gpt/to-vec c0 c1)
+    (gpt/to-vec c0 c3)))
+
+(defn side-vector-resize
+  [axis [c0 c1 _ c3] start-vector end-vector]
+  (if (= axis :x)
+    (gpt/to-vec (gpt/add c0 start-vector) (gpt/add c1 end-vector))
+    (gpt/to-vec (gpt/add c0 start-vector) (gpt/add c3 end-vector))))
+
 ;; Constraint function definitions
 
 (defmulti constraint-modifier (fn [type & _] type))
 
 (defmethod constraint-modifier :start
-  [_ axis parent _ _ transformed-parent-rect]
-
-  (let [parent-rect (:selrect parent)
-        delta-start (get-delta-start axis parent-rect transformed-parent-rect)]
-    (if-not (mth/almost-zero? delta-start)
-      {:displacement (get-displacement axis delta-start)}
-      {})))
+  [_ axis child-points-before parent-points-before child-points-after parent-points-after]
+  (let [start-before (start-vector axis child-points-before parent-points-before)
+        start-after  (start-vector axis child-points-after parent-points-after)]
+    (ctm/move-modifiers (displacement start-before start-after))))
 
 (defmethod constraint-modifier :end
-  [_ axis parent _ _ transformed-parent-rect]
-  (let [parent-rect (:selrect parent)
-        delta-end (get-delta-end axis parent-rect transformed-parent-rect)]
-    (if-not (mth/almost-zero? delta-end)
-      {:displacement (get-displacement axis delta-end)}
-      {})))
+  [_ axis child-points-before parent-points-before child-points-after parent-points-after]
+  (let [end-before  (end-vector axis child-points-before parent-points-before)
+        end-after   (end-vector axis child-points-after parent-points-after)]
+    (ctm/move-modifiers (displacement end-before end-after))))
 
 (defmethod constraint-modifier :fixed
-  [_ axis parent child _ transformed-parent-rect]
-  (let [parent-rect (:selrect parent)
-        child-rect (gre/points->rect (:points child))
+  [_ axis child-points-before parent-points-before child-points-after parent-points-after transformed-parent]
+  (let [;; Same as constraint end
+        end-before   (end-vector axis child-points-before parent-points-before)
+        end-after    (end-vector axis child-points-after parent-points-after)
+        start-before (start-vector axis child-points-before parent-points-before)
+        start-after  (start-vector axis child-points-after parent-points-after)
 
-        delta-start  (get-delta-start axis parent-rect transformed-parent-rect)
-        delta-size   (get-delta-size axis parent-rect transformed-parent-rect)
-        child-size   (get-size axis child-rect)]
-    (if (or (not (mth/almost-zero? delta-start))
-            (not (mth/almost-zero? delta-size)))
+        disp-end     (displacement end-before end-after)
+        disp-start   (displacement start-before start-after)
 
-      {:displacement (get-displacement axis delta-start)
-       :resize-origin (get-displacement axis delta-start (:x child-rect) (:y child-rect))
-       :resize-vector (get-scale axis (/ (+ child-size delta-size) child-size))}
-      {})))
+        ;; We get the current axis side and grow it on both side by the end+start displacements
+        before-vec   (side-vector axis child-points-after)
+        after-vec    (side-vector-resize axis child-points-after disp-start disp-end)
+
+        ;; after-vec will contain the side length of the grown side
+        ;; we scale the shape by the diference and translate it by the start
+        ;; displacement (so its left+top position is constant)
+        scale        (/ (gpt/length after-vec) (gpt/length before-vec))
+
+        resize-origin (first child-points-after)
+        {:keys [transform transform-inverse]} transformed-parent]
+
+    (-> (ctm/empty)
+        (ctm/resize (get-scale axis scale) resize-origin transform transform-inverse)
+        (ctm/move disp-start))))
 
 (defmethod constraint-modifier :center
-  [_ axis parent _ _ transformed-parent-rect]
-  (let [parent-rect (:selrect parent)
-        parent-center (gco/center-rect parent-rect)
-        transformed-parent-center (gco/center-rect transformed-parent-rect)
-        delta-center (get-delta-center axis parent-center transformed-parent-center)]
-    (if-not (mth/almost-zero? delta-center)
-      {:displacement (get-displacement axis delta-center)}
-      {})))
-
-(defmethod constraint-modifier :scale
-  [_ axis _ _ modifiers _]
-  (let [{:keys [resize-vector resize-vector-2 displacement]} modifiers]
-    (cond-> {}
-      (and (some? resize-vector)
-           (not= (axis resize-vector) 1))
-      (assoc :resize-origin (:resize-origin modifiers)
-             :resize-vector (if (= :x axis)
-                              (gpt/point (:x resize-vector) 1)
-                              (gpt/point 1 (:y resize-vector))))
-
-      (and (= :y axis) (some? resize-vector-2)
-           (not (mth/close? (:y resize-vector-2) 1)))
-      (assoc :resize-origin (:resize-origin-2 modifiers)
-             :resize-vector (gpt/point 1 (:y resize-vector-2)))
-
-      (some? displacement)
-      (assoc :displacement
-             (get-displacement axis (-> (gpt/point 0 0)
-                                        (gpt/transform displacement)
-                                        (gpt/transform (:resize-transform-inverse modifiers (gmt/matrix)))
-                                        axis))))))
+  [_ axis child-points-before parent-points-before child-points-after parent-points-after]
+  (let [center-before  (center-vector axis child-points-before parent-points-before)
+        center-after   (center-vector axis child-points-after parent-points-after)]
+    (ctm/move-modifiers (displacement center-before center-after))))
 
 (defmethod constraint-modifier :default [_ _ _ _ _]
-  {})
+  [])
 
 (def const->type+axis
   {:left :start
@@ -152,77 +245,73 @@
       :top
       :scale)))
 
-(defn clean-modifiers
-  "Remove redundant modifiers"
-  [{:keys [displacement resize-vector resize-vector-2] :as modifiers}]
+(defn bounding-box-parent-transform
+  "Returns a bounding box for the child in the same coordinate system
+  as the parent.
+  Returns a points array"
+  [child parent]
+  (-> child
+      :points
+      (gco/transform-points (:transform-inverse parent))
+      (gre/points->rect)
+      (gre/rect->points) ;; Restore to points so we can transform them
+      (gco/transform-points (:transform parent))))
 
-  (cond-> modifiers
-    ;; Displacement with value 0. We don't move in any direction
-    (and (some? displacement)
-         (mth/almost-zero? (:e displacement))
-         (mth/almost-zero? (:f displacement)))
-    (dissoc :displacement)
+(defn normalize-modifiers
+  "Before aplying constraints we need to remove the deformation caused by the resizing of the parent"
+  [constraints-h constraints-v modifiers child parent transformed-child {:keys [transform transform-inverse] :as transformed-parent}]
 
-    ;; Resize with value very close to 1 means no resize
-    (and (some? resize-vector)
-         (mth/almost-zero? (- 1.0 (:x resize-vector)))
-         (mth/almost-zero? (- 1.0 (:y resize-vector))))
-    (dissoc :resize-origin :resize-vector)
+  (let [child-bb-before (gst/parent-coords-rect child parent)
+        child-bb-after  (gst/parent-coords-rect transformed-child transformed-parent)
+        scale-x (/ (:width child-bb-before) (:width child-bb-after))
+        scale-y (/ (:height child-bb-before) (:height child-bb-after))
+        resize-origin (-> transformed-parent :points gpo/origin)]
 
-    (and (some? resize-vector)
-         (mth/almost-zero? (- 1.0 (:x resize-vector-2)))
-         (mth/almost-zero? (- 1.0 (:y resize-vector-2))))
-    (dissoc :resize-origin-2 :resize-vector-2)))
+    (cond-> modifiers
+      (not= :scale constraints-h)
+      (ctm/resize (gpt/point scale-x 1) resize-origin transform transform-inverse)
+
+      (not= :scale constraints-v)
+      (ctm/resize (gpt/point 1 scale-y) resize-origin transform transform-inverse))))
 
 (defn calc-child-modifiers
-  [parent child modifiers ignore-constraints transformed-parent-rect]
+  [parent child modifiers ignore-constraints transformed-parent]
 
-  (if (and (nil? (:resize-vector modifiers))
-           (nil? (:resize-vector-2 modifiers)))
-    ;; If we don't have a resize modifier we return the same modifiers
-    modifiers
-    (let [constraints-h
-          (if-not ignore-constraints
-            (:constraints-h child (default-constraints-h child))
-            :scale)
+  (let [modifiers (ctm/select-child-modifiers modifiers)
 
-          constraints-v
-          (if-not ignore-constraints
-            (:constraints-v child (default-constraints-v child))
-            :scale)
+        constraints-h
+        (if-not ignore-constraints
+          (:constraints-h child (default-constraints-h child))
+          :scale)
 
-          modifiers-h (constraint-modifier (constraints-h const->type+axis) :x parent child modifiers transformed-parent-rect)
-          modifiers-v (constraint-modifier (constraints-v const->type+axis) :y parent child modifiers transformed-parent-rect)]
+        constraints-v
+        (if-not ignore-constraints
+          (:constraints-v child (default-constraints-v child))
+          :scale)]
 
-      ;; Build final child modifiers. Apply transform again to the result, to get the
-      ;; real modifiers that need to be applied to the child, including rotation as needed.
-      (cond-> {}
-        (some? (:displacement-after modifiers))
-        (assoc :displacement-after (:displacement-after modifiers))
+    (if (and (= :scale constraints-h) (= :scale constraints-v))
+      modifiers
 
-        (or (contains? modifiers-h :displacement)
-            (contains? modifiers-v :displacement))
-        (assoc :displacement (cond-> (gpt/point (get-in modifiers-h [:displacement :x] 0)
-                                                (get-in modifiers-v [:displacement :y] 0))
-                               (some? (:resize-transform modifiers))
-                               (gpt/transform (:resize-transform modifiers))
+      (let [transformed-child (gst/transform-shape child (ctm/select-child-modifiers modifiers))
+            modifiers (normalize-modifiers constraints-h constraints-v modifiers child parent transformed-child transformed-parent)
 
-                               :always
-                               (gmt/translate-matrix)))
+            transformed-child (gst/transform-shape child modifiers)
 
-        (:resize-vector modifiers-h)
-        (assoc :resize-origin (:resize-origin modifiers-h)
-               :resize-vector (gpt/point (get-in modifiers-h [:resize-vector :x] 1)
-                                         (get-in modifiers-h [:resize-vector :y] 1)))
+            parent-points-before (bounding-box-parent-transform parent parent)
+            child-points-before  (bounding-box-parent-transform child parent)
+            parent-points-after  (bounding-box-parent-transform transformed-parent transformed-parent)
+            child-points-after   (bounding-box-parent-transform transformed-child transformed-parent)
 
-        (:resize-vector modifiers-v)
-        (assoc :resize-origin-2 (:resize-origin modifiers-v)
-               :resize-vector-2 (gpt/point (get-in modifiers-v [:resize-vector :x] 1)
-                                           (get-in modifiers-v [:resize-vector :y] 1)))
+            modifiers-h (constraint-modifier (constraints-h const->type+axis) :x
+                                             child-points-before parent-points-before
+                                             child-points-after parent-points-after
+                                             transformed-parent)
 
-        (:resize-transform modifiers)
-        (assoc :resize-transform (:resize-transform modifiers)
-               :resize-transform-inverse (:resize-transform-inverse modifiers))
+            modifiers-v (constraint-modifier (constraints-v const->type+axis) :y
+                                             child-points-before parent-points-before
+                                             child-points-after parent-points-after
+                                             transformed-parent)]
 
-        :always
-        (clean-modifiers)))))
+        (-> modifiers
+            (ctm/add-modifiers modifiers-h)
+            (ctm/add-modifiers modifiers-v))))))

common/src/app/common/geom/shapes/flex_layout.cljc

@@ -0,0 +1,21 @@
+;; This Source Code Form is subject to the terms of the Mozilla Public
+;; License, v. 2.0. If a copy of the MPL was not distributed with this
+;; file, You can obtain one at http://mozilla.org/MPL/2.0/.
+;;
+;; Copyright (c) KALEIDOS INC
+
+(ns app.common.geom.shapes.flex-layout
+  (:require
+   [app.common.data.macros :as dm]
+   [app.common.geom.shapes.flex-layout.bounds :as fbo]
+   [app.common.geom.shapes.flex-layout.drop-area :as fdr]
+   [app.common.geom.shapes.flex-layout.lines :as fli]
+   [app.common.geom.shapes.flex-layout.modifiers :as fmo]))
+
+(dm/export fbo/layout-content-bounds)
+(dm/export fdr/get-drop-index)
+(dm/export fdr/layout-drop-areas)
+(dm/export fli/calc-layout-data)
+(dm/export fmo/layout-child-modifiers)
+(dm/export fmo/normalize-child-modifiers)
+

common/src/app/common/geom/shapes/flex_layout/bounds.cljc

@@ -0,0 +1,112 @@
+;; This Source Code Form is subject to the terms of the Mozilla Public
+;; License, v. 2.0. If a copy of the MPL was not distributed with this
+;; file, You can obtain one at http://mozilla.org/MPL/2.0/.
+;;
+;; Copyright (c) KALEIDOS INC
+
+(ns app.common.geom.shapes.flex-layout.bounds
+  (:require
+   [app.common.geom.point :as gpt]
+   [app.common.geom.shapes.common :as gco]
+   [app.common.geom.shapes.points :as gpo]
+   [app.common.geom.shapes.rect :as gre]
+   [app.common.math :as mth]
+   [app.common.types.shape.layout :as ctl]))
+
+(defn- child-layout-bound-points
+  "Returns the bounds of the children as points"
+  [parent child]
+
+  (let [row? (ctl/row? parent)
+        col? (ctl/col? parent)
+
+        hv   (partial gpo/start-hv (:points parent))
+        vv   (partial gpo/start-vv (:points parent))
+
+        v-start? (ctl/v-start? parent)
+        v-center? (ctl/v-center? parent)
+        v-end? (ctl/v-end? parent)
+        h-start? (ctl/h-start? parent)
+        h-center? (ctl/h-center? parent)
+        h-end? (ctl/h-end? parent)
+
+        base-p (first (:points child))
+
+        width (-> child :selrect :width)
+        height (-> child :selrect :height)
+
+        min-width (if (ctl/fill-width? child)
+                    (ctl/child-min-width child)
+                    width)
+
+        min-height (if (ctl/fill-height? child)
+                     (ctl/child-min-height child)
+                     height)
+
+        ;; This is the leftmost (when row) or topmost (when col) point
+        ;; Will be added always to the bounds and then calculated the other limits
+        ;; from there
+        base-p (cond-> base-p
+                 (and row? v-center?)
+                 (gpt/add (vv (/ height 2)))
+
+                 (and row? v-end?)
+                 (gpt/add (vv height))
+
+                 (and col? h-center?)
+                 (gpt/add (hv (/ width 2)))
+
+                 (and col? h-end?)
+                 (gpt/add (hv width)))]
+
+    (cond-> [base-p]
+      (and (mth/almost-zero? min-width) (mth/almost-zero? min-height))
+      (conj (cond-> base-p
+              row?
+              (gpt/add (hv width))
+
+              col?
+              (gpt/add (vv height))))
+
+      (not (mth/almost-zero? min-width))
+      (conj (cond-> base-p
+              (or row? h-start?)
+              (gpt/add (hv min-width))
+
+              (and col? h-center?)
+              (gpt/add (hv (/ min-width 2)))
+
+              (and col? h-center?)
+              (gpt/subtract (hv min-width))))
+
+      (not (mth/almost-zero? min-height))
+      (conj (cond-> base-p
+              (or col? v-start?)
+              (gpt/add (vv min-height))
+
+              (and row? v-center?)
+              (gpt/add (vv (/ min-height 2)))
+
+              (and row? v-end?)
+              (gpt/subtract (vv min-height)))))))
+
+(defn layout-content-bounds
+  [{:keys [layout-padding] :as parent} children]
+
+  (let [{pad-top :p1 pad-right :p2 pad-bottom :p3 pad-left :p4} layout-padding
+        pad-top    (or pad-top 0)
+        pad-right  (or pad-right 0)
+        pad-bottom (or pad-bottom 0)
+        pad-left   (or pad-left 0)
+
+        child-bounds
+        (fn [{:keys [points] :as child}]
+          (if (or (ctl/fill-height? child) (ctl/fill-height? child))
+            (child-layout-bound-points parent child)
+            points))]
+
+    (-> (mapcat child-bounds children)
+        (gco/transform-points (gco/center-shape parent) (:transform-inverse parent))
+        (gre/squared-points)
+        (gpo/pad-points (- pad-top) (- pad-right) (- pad-bottom) (- pad-left))
+        (gre/points->rect))))

common/src/app/common/geom/shapes/flex_layout/drop_area.cljc

@@ -0,0 +1,194 @@
+;; This Source Code Form is subject to the terms of the Mozilla Public
+;; License, v. 2.0. If a copy of the MPL was not distributed with this
+;; file, You can obtain one at http://mozilla.org/MPL/2.0/.
+;;
+;; Copyright (c) KALEIDOS INC
+
+(ns app.common.geom.shapes.flex-layout.drop-area
+  (:require
+   [app.common.data :as d]
+   [app.common.geom.matrix :as gmt]
+   [app.common.geom.shapes.common :as gco]
+   [app.common.geom.shapes.flex-layout.lines :as fli]
+   [app.common.geom.shapes.rect :as gsr]
+   [app.common.pages.helpers :as cph]
+   [app.common.types.shape.layout :as ctl]))
+
+(defn drop-child-areas
+  [{:keys [transform-inverse] :as frame} parent-rect child index reverse? prev-x prev-y last?]
+
+  (let [col?      (ctl/col? frame)
+        row?      (ctl/row? frame)
+        [layout-gap-row layout-gap-col] (ctl/gaps frame)
+
+        start-p (-> child :points first)
+        center  (gco/center-shape frame)
+        start-p (gmt/transform-point-center start-p center transform-inverse)
+
+        box-x      (:x start-p)
+        box-y      (:y start-p)
+        box-width  (-> child :selrect :width)
+        box-height (-> child :selrect :height)
+
+        x (if col? (:x parent-rect) prev-x)
+        y (if row? (:y parent-rect) prev-y)
+
+        width
+        (cond
+          (and row? last?)
+          (- (+ (:x parent-rect) (:width parent-rect)) x)
+
+          col?
+          (:width parent-rect)
+
+          :else
+          (+ box-width (- box-x prev-x) (/ layout-gap-row 2)))
+
+        height
+        (cond
+          (and col? last?)
+          (- (+ (:y parent-rect) (:height parent-rect)) y)
+
+          row?
+          (:height parent-rect)
+
+          :else
+          (+ box-height (- box-y prev-y) (/ layout-gap-col 2)))]
+
+    (if row?
+      (let [half-point-width (+ (- box-x x) (/ box-width 2))]
+        [(gsr/make-rect x y width height)
+         (-> (gsr/make-rect x y half-point-width height)
+             (assoc :index (if reverse? (inc index) index)))
+         (-> (gsr/make-rect (+ x half-point-width) y (- width half-point-width) height)
+             (assoc :index (if reverse? index (inc index))))])
+      (let [half-point-height (+ (- box-y y) (/ box-height 2))]
+        [(gsr/make-rect x y width height)
+         (-> (gsr/make-rect x y width half-point-height)
+             (assoc :index (if reverse? (inc index) index)))
+         (-> (gsr/make-rect x (+ y half-point-height) width (- height half-point-height))
+             (assoc :index (if reverse? index (inc index))))]))))
+
+(defn drop-line-area
+  [{:keys [transform-inverse margin-x margin-y] :as frame}
+   {:keys [start-p layout-gap-row layout-gap-col num-children line-width line-height] :as line-data}
+   prev-x prev-y last?]
+
+  (let [col?      (ctl/col? frame)
+        row?      (ctl/row? frame)
+        h-center? (and row? (ctl/h-center? frame))
+        h-end?    (and row? (ctl/h-end? frame))
+        v-center? (and col? (ctl/v-center? frame))
+        v-end?    (and row? (ctl/v-end? frame))
+
+        center (gco/center-shape frame)
+        start-p (gmt/transform-point-center start-p center transform-inverse)
+
+        line-width
+        (if row?
+          (:width frame)
+          (+ line-width margin-x
+             (if row? (* layout-gap-row (dec num-children)) 0)))
+
+        line-height
+        (if col?
+          (:height frame)
+          (+ line-height margin-y
+             (if col?
+               (* layout-gap-col (dec num-children))
+               0)))
+
+        box-x
+        (- (:x start-p)
+           (cond
+             h-center? (/ line-width 2)
+             h-end? line-width
+             :else 0))
+
+        box-y
+        (- (:y start-p)
+           (cond
+             v-center? (/ line-height 2)
+             v-end? line-height
+             :else 0))
+
+        x (if row? (:x frame) prev-x)
+        y (if col? (:y frame) prev-y)
+
+        width (cond
+                (and col? last?)
+                (- (+ (:x frame) (:width frame)) x)
+
+                row?
+                (:width frame)
+
+                :else
+                (+ line-width (- box-x prev-x) (/ layout-gap-row 2)))
+
+        height (cond
+                 (and row? last?)
+                 (- (+ (:y frame) (:height frame)) y)
+
+                 col?
+                 (:height frame)
+
+                 :else
+                 (+ line-height (- box-y prev-y) (/ layout-gap-col 2)))]
+    (gsr/make-rect x y width height)))
+
+(defn layout-drop-areas
+  "Retrieve the layout drop areas to move shapes inside layouts"
+  [frame layout-data children]
+
+  (let [reverse? (:reverse? layout-data)
+        children (vec (cond->> (d/enumerate children) reverse? reverse))
+        lines    (:layout-lines layout-data)]
+
+    (loop [areas        []
+           from-idx     0
+           prev-line-x  (:x frame)
+           prev-line-y  (:y frame)
+
+           current-line (first lines)
+           lines        (rest lines)]
+
+      (if (nil? current-line)
+        areas
+
+        (let [line-area (drop-line-area frame current-line prev-line-x prev-line-y (nil? (first lines)))
+              children  (subvec children from-idx (+ from-idx (:num-children current-line)))
+
+              next-areas
+              (loop [areas         areas
+                     prev-child-x  (:x line-area)
+                     prev-child-y  (:y line-area)
+                     [index child] (first children)
+                     children      (rest children)]
+
+                (if (nil? child)
+                  areas
+
+                  (let [[child-area child-area-start child-area-end]
+                        (drop-child-areas frame line-area child index reverse? prev-child-x prev-child-y (nil? (first children)))]
+                    (recur (conj areas child-area-start child-area-end)
+                           (+ (:x child-area) (:width child-area))
+                           (+ (:y child-area) (:height child-area))
+                           (first children)
+                           (rest children)))))]
+
+          (recur next-areas
+                 (+ from-idx (:num-children current-line))
+                 (+ (:x line-area) (:width line-area))
+                 (+ (:y line-area) (:height line-area))
+                 (first lines)
+                 (rest lines)))))))
+
+(defn get-drop-index
+  [frame-id objects position]
+  (let [frame       (get objects frame-id)
+        position    (gmt/transform-point-center position (gco/center-shape frame) (:transform-inverse frame))
+        children    (cph/get-immediate-children objects frame-id)
+        layout-data (fli/calc-layout-data frame children)
+        drop-areas  (layout-drop-areas frame layout-data children)
+        area        (d/seek #(gsr/contains-point? % position) drop-areas)]
+    (:index area)))

common/src/app/common/geom/shapes/flex_layout/lines.cljc

@@ -0,0 +1,319 @@
+;; This Source Code Form is subject to the terms of the Mozilla Public
+;; License, v. 2.0. If a copy of the MPL was not distributed with this
+;; file, You can obtain one at http://mozilla.org/MPL/2.0/.
+;;
+;; Copyright (c) KALEIDOS INC
+
+(ns app.common.geom.shapes.flex-layout.lines
+  (:require
+   [app.common.data :as d]
+   [app.common.geom.shapes.flex-layout.positions :as flp]
+   [app.common.geom.shapes.points :as gpo]
+   [app.common.geom.shapes.transforms :as gst]
+   [app.common.math :as mth]
+   [app.common.types.shape.layout :as ctl]))
+
+(def conjv (fnil conj []))
+
+(defn layout-bounds
+  [{:keys [layout-padding layout-padding-type] :as shape}]
+  (let [;; Add padding to the bounds
+        {pad-top :p1 pad-right :p2 pad-bottom :p3 pad-left :p4} layout-padding
+        [pad-top pad-right pad-bottom pad-left]
+        (if (= layout-padding-type :multiple)
+          [pad-top pad-right pad-bottom pad-left]
+          [pad-top pad-top pad-top pad-top])]
+    (gpo/pad-points (:points shape) pad-top pad-right pad-bottom pad-left)))
+
+(defn init-layout-lines
+  "Calculates the lines basic data and accumulated values. The positions will be calculated in a different operation"
+  [shape children layout-bounds]
+
+  (let [col?  (ctl/col? shape)
+        row?  (ctl/row? shape)
+
+        wrap? (and (ctl/wrap? shape)
+                   (or col? (not (ctl/auto-width? shape)))
+                   (or row? (not (ctl/auto-height? shape))))
+
+        [layout-gap-row layout-gap-col] (ctl/gaps shape)
+
+        layout-width  (gpo/width-points layout-bounds)
+        layout-height (gpo/height-points layout-bounds)]
+
+    (loop [line-data    nil
+           result       []
+           child        (first children)
+           children     (rest children)]
+
+      (if (nil? child)
+        (cond-> result (some? line-data) (conj line-data))
+
+        (let [{:keys [line-min-width line-min-height
+                      line-max-width line-max-height
+                      num-children
+                      children-data]} line-data
+
+              child-bounds     (gst/parent-coords-points child shape)
+              child-width      (gpo/width-points child-bounds)
+              child-height     (gpo/height-points child-bounds)
+              child-min-width  (ctl/child-min-width child)
+              child-min-height (ctl/child-min-height child)
+              child-max-width  (ctl/child-max-width child)
+              child-max-height (ctl/child-max-height child)
+
+              [child-margin-top child-margin-right child-margin-bottom child-margin-left]
+              (ctl/child-margins child)
+
+              child-margin-width (+ child-margin-left child-margin-right)
+              child-margin-height (+ child-margin-top child-margin-bottom)
+
+              fill-width?  (ctl/fill-width? child)
+              fill-height? (ctl/fill-height? child)
+
+              ;; We need this info later to calculate the child resizes when fill
+              child-data {:id (:id child)
+                          :child-min-width (if fill-width? child-min-width child-width)
+                          :child-min-height (if fill-height? child-min-height child-height)
+                          :child-max-width (if fill-width? child-max-width child-width)
+                          :child-max-height (if fill-height? child-max-height child-height)}
+
+              next-min-width   (+ child-margin-width (if fill-width? child-min-width child-width))
+              next-min-height  (+ child-margin-height (if fill-height? child-min-height child-height))
+              next-max-width   (+ child-margin-width (if fill-width? child-max-width child-width))
+              next-max-height  (+ child-margin-height (if fill-height? child-max-height child-height))
+
+              next-line-min-width  (+ line-min-width  next-min-width  (* layout-gap-row num-children))
+              next-line-min-height (+ line-min-height next-min-height (* layout-gap-col num-children))]
+
+          (if (and (some? line-data)
+                   (or (not wrap?)
+                       (and row? (<= next-line-min-width layout-width))
+                       (and col? (<= next-line-min-height layout-height))))
+
+            (recur {:line-min-width  (if row? (+ line-min-width next-min-width) (max line-min-width next-min-width))
+                    :line-max-width  (if row? (+ line-max-width next-max-width) (max line-max-width next-max-width))
+                    :line-min-height (if col? (+ line-min-height next-min-height) (max line-min-height next-min-height))
+                    :line-max-height (if col? (+ line-max-height next-max-height) (max line-max-height next-max-height))
+                    :num-children    (inc num-children)
+                    :children-data   (conjv children-data child-data)}
+                   result
+                   (first children)
+                   (rest children))
+
+            (recur {:line-min-width  next-min-width
+                    :line-min-height next-min-height
+                    :line-max-width  next-max-width
+                    :line-max-height next-max-height
+                    :num-children    1
+                    :children-data   [child-data]}
+                   (cond-> result (some? line-data) (conj line-data))
+                   (first children)
+                   (rest children))))))))
+
+(defn add-space-to-items
+  ;; Distributes the remainder space between the lines
+  [prop prop-min prop-max to-share items]
+  (let [num-items (->> items (remove #(mth/close? (get % prop) (get % prop-max))) count)
+        per-line-target (/ to-share num-items)]
+    (loop [current (first items)
+           items   (rest items)
+           remainder to-share
+           result []]
+      (if (nil? current)
+        [result remainder]
+        (let [cur-val (or (get current prop) (get current prop-min) 0)
+              max-val (get current prop-max)
+              cur-inc (if (> (+ cur-val per-line-target) max-val)
+                        (- max-val cur-val)
+                        per-line-target)
+              current (assoc current prop (+ cur-val cur-inc))
+              remainder (- remainder cur-inc)
+              result (conj result current)]
+          (recur (first items) (rest items) remainder result))))))
+
+(defn distribute-space
+  [prop prop-min prop-max min-value bound-value items]
+  (loop [to-share (- bound-value min-value)
+         items    items]
+    (if (<= to-share 0)
+      items
+      (let [[items remainder] (add-space-to-items prop prop-min prop-max to-share items)]
+        (assert (<= remainder to-share) (str remainder ">" to-share))
+        (if (or (<= remainder 0) (= remainder to-share))
+          items
+          (recur remainder items))))))
+
+(defn add-lines-positions
+  [parent layout-bounds layout-lines]
+
+  (let [row? (ctl/row? parent)
+        col? (ctl/col? parent)
+
+        [layout-gap-row layout-gap-col] (ctl/gaps parent)
+
+        layout-width   (gpo/width-points layout-bounds)
+        layout-height  (gpo/height-points layout-bounds)]
+
+    (letfn [(add-lines [[total-width total-height]
+                        {:keys [line-width line-height]}]
+              [(+ total-width line-width) (+ total-height line-height)])
+
+            (add-ranges [[total-min-width total-min-height total-max-width total-max-height]
+                        {:keys [line-min-width line-min-height line-max-width line-max-height]}]
+              [(+ total-min-width line-min-width)
+               (+ total-min-height line-min-height)
+               (+ total-max-width line-max-width)
+               (+ total-max-height line-max-height)])
+
+            (add-starts [total-width total-height num-lines [result base-p] layout-line]
+              (let [start-p (flp/get-start-line parent layout-bounds layout-line base-p total-width total-height num-lines)
+                    next-p  (flp/get-next-line  parent layout-bounds layout-line base-p total-width total-height num-lines)]
+
+                [(conj result (assoc layout-line :start-p start-p))
+                 next-p]))]
+
+      (let [[total-min-width total-min-height total-max-width total-max-height]
+            (->> layout-lines (reduce add-ranges [0 0 0 0]))
+
+            get-layout-width (fn [{:keys [num-children]}] (- layout-width (* layout-gap-row (dec num-children))))
+            get-layout-height (fn [{:keys [num-children]}] (- layout-height (* layout-gap-col (dec num-children))))
+
+            num-lines (count layout-lines)
+
+            ;; When align-items is stretch we need to adjust the main axis size to grow for the full content
+            stretch-width-fix
+            (if (and col? (ctl/content-stretch? parent))
+              (/ (- layout-width (* layout-gap-row (dec num-lines)) total-max-width) num-lines)
+              0)
+
+            stretch-height-fix
+            (if (and row? (ctl/content-stretch? parent))
+              (/ (- layout-height (* layout-gap-col (dec num-lines)) total-max-height) num-lines)
+              0)
+
+            ;; Distributes the space between the layout lines based on its max/min constraints
+            layout-lines
+            (cond->> layout-lines
+              row?
+              (map #(assoc % :line-width (max (:line-min-width %) (min (get-layout-width %) (:line-max-width %)))))
+
+              col?
+              (map #(assoc % :line-height (max (:line-min-height %) (min (get-layout-height %) (:line-max-height %)))))
+
+              (and row? (>= total-min-height layout-height))
+              (map #(assoc % :line-height (:line-min-height %)))
+
+              (and row? (<= total-max-height layout-height))
+              (map #(assoc % :line-height (+ (:line-max-height %) stretch-height-fix)))
+
+              (and row? (< total-min-height layout-height total-max-height))
+              (distribute-space :line-height :line-min-height :line-max-height total-min-height (- layout-height (* (dec num-lines) layout-gap-col)))
+
+              (and col? (>= total-min-width layout-width))
+              (map #(assoc % :line-width (:line-min-width %)))
+
+              (and col? (<= total-max-width layout-width))
+              (map #(assoc % :line-width (+ (:line-max-width %) stretch-width-fix)))
+
+              (and col? (< total-min-width layout-width total-max-width))
+              (distribute-space :line-width :line-min-width :line-max-width total-min-width (- layout-width (* (dec num-lines) layout-gap-row))))
+
+            [total-width total-height] (->> layout-lines (reduce add-lines [0 0]))
+
+            base-p (flp/get-base-line parent layout-bounds total-width total-height num-lines)]
+
+        (first (reduce (partial add-starts total-width total-height num-lines) [[] base-p] layout-lines))))))
+
+(defn add-line-spacing
+  "Calculates the baseline for a flex layout"
+  [shape layout-bounds {:keys [num-children line-width line-height] :as line-data}]
+
+  (let [width (gpo/width-points layout-bounds)
+        height (gpo/height-points layout-bounds)
+
+        row?           (ctl/row? shape)
+        col?           (ctl/col? shape)
+        space-between? (ctl/space-between? shape)
+        space-around?  (ctl/space-around? shape)
+
+        [layout-gap-row layout-gap-col] (ctl/gaps shape)
+
+        layout-gap-row
+        (cond (and row? space-around?)
+              0
+
+              (and row? space-between?)
+              (/ (- width line-width) (dec num-children))
+
+              :else
+              layout-gap-row)
+
+        layout-gap-col
+        (cond (and col? space-around?)
+              0
+
+              (and col? space-between?)
+              (/ (- height line-height) (dec num-children))
+
+              :else
+              layout-gap-col)
+
+        margin-x
+        (if (and row? space-around?)
+          (/ (- width line-width) (inc num-children))
+          0)
+
+        margin-y
+        (if (and col? space-around?)
+          (/ (- height line-height) (inc num-children))
+          0)]
+    (assoc line-data
+           :layout-bounds layout-bounds
+           :layout-gap-row layout-gap-row
+           :layout-gap-col layout-gap-col
+           :margin-x margin-x
+           :margin-y margin-y)))
+
+(defn add-children-resizes
+  [shape {:keys [line-min-width line-width line-min-height line-height] :as line-data}]
+
+  (let [row? (ctl/row? shape)
+        col? (ctl/col? shape)]
+    (update line-data :children-data
+            (fn [children-data]
+              (cond->> children-data
+                row?
+                (map #(assoc % :child-width (:child-min-width %)))
+
+                col?
+                (map #(assoc % :child-height (:child-min-height %)))
+
+                row?
+                (distribute-space :child-width :child-min-width :child-max-width line-min-width line-width)
+
+                col?
+                (distribute-space :child-height :child-min-height :child-max-height line-min-height line-height)
+
+                :always
+                (d/index-by :id))))))
+
+(defn calc-layout-data
+  "Digest the layout data to pass it to the constrains"
+  [shape children]
+
+  (let [layout-bounds (layout-bounds shape)
+        reverse?      (ctl/reverse? shape)
+        children      (cond->> children reverse? reverse)
+
+        ;; Creates the layout lines information
+        layout-lines
+        (->> (init-layout-lines shape children layout-bounds)
+             (add-lines-positions shape layout-bounds)
+             (into []
+                   (comp (map (partial add-line-spacing shape layout-bounds))
+                         (map (partial add-children-resizes shape)))))]
+
+    {:layout-lines layout-lines
+     :layout-bounds layout-bounds
+     :reverse? reverse?}))

common/src/app/common/geom/shapes/flex_layout/modifiers.cljc

@@ -0,0 +1,100 @@
+;; This Source Code Form is subject to the terms of the Mozilla Public
+;; License, v. 2.0. If a copy of the MPL was not distributed with this
+;; file, You can obtain one at http://mozilla.org/MPL/2.0/.
+;;
+;; Copyright (c) KALEIDOS INC
+
+(ns app.common.geom.shapes.flex-layout.modifiers
+  (:require
+   [app.common.geom.point :as gpt]
+   [app.common.geom.shapes.flex-layout.positions :as fpo]
+   [app.common.geom.shapes.points :as gpo]
+   [app.common.geom.shapes.transforms :as gst]
+   [app.common.types.modifiers :as ctm]
+   [app.common.types.shape.layout :as ctl]))
+
+(defn normalize-child-modifiers
+  "Apply the modifiers and then normalized them against the parent coordinates"
+  [modifiers parent child {:keys [transform transform-inverse] :as transformed-parent}]
+
+  (let [transformed-child (gst/transform-shape child modifiers)
+        child-bb-before (gst/parent-coords-rect child parent)
+        child-bb-after  (gst/parent-coords-rect transformed-child transformed-parent)
+        scale-x (/ (:width child-bb-before) (:width child-bb-after))
+        scale-y (/ (:height child-bb-before) (:height child-bb-after))
+        resize-origin (-> transformed-parent :points gpo/origin)
+        resize-vector (gpt/point scale-x scale-y)]
+    (-> modifiers
+        (ctm/select-child-modifiers)
+        (ctm/resize resize-vector resize-origin transform transform-inverse))))
+
+(defn calc-fill-width-data
+  "Calculates the size and modifiers for the width of an auto-fill child"
+  [{:keys [transform transform-inverse] :as parent}
+   child
+   child-origin child-width
+   {:keys [children-data line-width] :as layout-data}]
+
+  (cond
+    (ctl/row? parent)
+    (let [target-width (max (get-in children-data [(:id child) :child-width]) 0.01)
+          fill-scale (/ target-width child-width)]
+      {:width target-width
+       :modifiers (ctm/resize-modifiers (gpt/point fill-scale 1) child-origin transform transform-inverse)})
+
+    (ctl/col? parent)
+    (let [target-width (max (- line-width (ctl/child-width-margin child)) 0.01)
+          max-width (ctl/child-max-width child)
+          target-width (min max-width target-width)
+          fill-scale (/ target-width child-width)]
+      {:width target-width
+       :modifiers (ctm/resize-modifiers (gpt/point fill-scale 1) child-origin transform transform-inverse)})))
+
+(defn calc-fill-height-data
+  "Calculates the size and modifiers for the height of an auto-fill child"
+  [{:keys [transform transform-inverse] :as parent}
+   child
+   child-origin child-height
+   {:keys [children-data line-height] :as layout-data}]
+
+  (cond
+    (ctl/col? parent)
+    (let [target-height (max (get-in children-data [(:id child) :child-height]) 0.01)
+          fill-scale (/ target-height child-height)]
+      {:height target-height
+       :modifiers (ctm/resize-modifiers (gpt/point 1 fill-scale) child-origin transform transform-inverse)})
+
+    (ctl/row? parent)
+    (let [target-height (max (- line-height (ctl/child-height-margin child)) 0.01)
+          max-height (ctl/child-max-height child)
+          target-height (min max-height target-height)
+          fill-scale (/ target-height child-height)]
+      {:height target-height
+       :modifiers (ctm/resize-modifiers (gpt/point 1 fill-scale) child-origin transform transform-inverse)})))
+
+(defn layout-child-modifiers
+  "Calculates the modifiers for the layout"
+  [parent child layout-line]
+  (let [child-bounds (gst/parent-coords-points child parent)
+
+        child-origin (gpo/origin child-bounds)
+        child-width  (gpo/width-points child-bounds)
+        child-height (gpo/height-points child-bounds)
+
+        fill-width   (when (ctl/fill-width? child)  (calc-fill-width-data parent child child-origin child-width layout-line))
+        fill-height  (when (ctl/fill-height? child) (calc-fill-height-data parent child child-origin child-height layout-line))
+
+        child-width (or (:width fill-width) child-width)
+        child-height (or (:height fill-height) child-height)
+
+        [corner-p layout-line] (fpo/get-child-position parent child child-width child-height layout-line)
+
+        move-vec (gpt/to-vec child-origin corner-p)
+
+        modifiers
+        (-> (ctm/empty)
+            (cond-> fill-width (ctm/add-modifiers (:modifiers fill-width)))
+            (cond-> fill-height (ctm/add-modifiers (:modifiers fill-height)))
+            (ctm/move move-vec))]
+
+    [modifiers layout-line]))

common/src/app/common/geom/shapes/flex_layout/positions.cljc

@@ -0,0 +1,277 @@
+;; This Source Code Form is subject to the terms of the Mozilla Public
+;; License, v. 2.0. If a copy of the MPL was not distributed with this
+;; file, You can obtain one at http://mozilla.org/MPL/2.0/.
+;;
+;; Copyright (c) KALEIDOS INC
+
+(ns app.common.geom.shapes.flex-layout.positions
+  (:require
+   [app.common.geom.point :as gpt]
+   [app.common.geom.shapes.points :as gpo]
+   [app.common.types.shape.layout :as ctl]))
+
+(defn get-base-line
+  [parent layout-bounds total-width total-height num-lines]
+
+  (let [layout-width  (gpo/width-points layout-bounds)
+        layout-height (gpo/height-points layout-bounds)
+        row?          (ctl/row? parent)
+        col?          (ctl/col? parent)
+        hv            (partial gpo/start-hv layout-bounds)
+        vv            (partial gpo/start-vv layout-bounds)
+
+        end?     (ctl/content-end? parent)
+        center?  (ctl/content-center? parent)
+        around?  (ctl/content-around? parent)
+
+        ;; Adjust the totals so it takes into account the gaps
+        [layout-gap-row layout-gap-col] (ctl/gaps parent)
+        lines-gap-row (* (dec num-lines) layout-gap-row)
+        lines-gap-col (* (dec num-lines) layout-gap-col)
+
+        free-width-gap (- layout-width total-width lines-gap-row)
+        free-height-gap (- layout-height total-height lines-gap-col)
+        free-width (- layout-width total-width)
+        free-height (- layout-height total-height)]
+
+    (cond-> (gpo/origin layout-bounds)
+      row?
+      (cond-> center?
+        (gpt/add (vv (/ free-height-gap 2)))
+
+        end?
+        (gpt/add (vv free-height-gap))
+
+        around?
+        (gpt/add (vv (/ free-height (inc num-lines)))))
+
+      col?
+      (cond-> center?
+        (gpt/add (hv (/ free-width-gap 2)))
+
+        end?
+        (gpt/add (hv free-width-gap))
+
+        around?
+        (gpt/add (hv (/ free-width (inc num-lines))))))))
+
+(defn get-next-line
+  [parent layout-bounds {:keys [line-width line-height]} base-p total-width total-height num-lines]
+
+  (let [layout-width  (gpo/width-points layout-bounds)
+        layout-height (gpo/height-points layout-bounds)
+        row? (ctl/row? parent)
+        col? (ctl/col? parent)
+
+        [layout-gap-row layout-gap-col] (ctl/gaps parent)
+
+        hv   #(gpo/start-hv layout-bounds %)
+        vv   #(gpo/start-vv layout-bounds %)
+
+        stretch? (ctl/content-stretch? parent)
+        between? (ctl/content-between? parent)
+        around?  (ctl/content-around? parent)
+
+        free-width  (- layout-width total-width)
+        free-height (- layout-height total-height)
+
+        line-gap-row
+        (cond
+          stretch?
+          (/ free-width num-lines)
+
+          between?
+          (/ free-width (dec num-lines))
+
+          around?
+          (/ free-width (inc num-lines))
+
+          :else
+          layout-gap-row)
+
+        line-gap-col
+        (cond
+          stretch?
+          (/ free-height num-lines)
+
+          between?
+          (/ free-height (dec num-lines))
+
+          around?
+          (/ free-height (inc num-lines))
+
+          :else
+          layout-gap-col)]
+
+    (cond-> base-p
+      row?
+      (gpt/add (vv (+ line-height (max layout-gap-col line-gap-col))))
+
+      col?
+      (gpt/add (hv (+ line-width (max layout-gap-row line-gap-row)))))))
+
+(defn get-start-line
+  "Cross axis line. It's position is fixed along the different lines"
+  [parent layout-bounds {:keys [line-width line-height num-children]} base-p total-width total-height num-lines]
+
+  (let [layout-width        (gpo/width-points layout-bounds)
+        layout-height       (gpo/height-points layout-bounds)
+        [layout-gap-row layout-gap-col] (ctl/gaps parent)
+        row?                (ctl/row? parent)
+        col?                (ctl/col? parent)
+        space-between?      (ctl/space-between? parent)
+        space-around?       (ctl/space-around? parent)
+        h-center?           (ctl/h-center? parent)
+        h-end?              (ctl/h-end? parent)
+        v-center?           (ctl/v-center? parent)
+        v-end?              (ctl/v-end? parent)
+        content-stretch?    (ctl/content-stretch? parent)
+        hv                  (partial gpo/start-hv layout-bounds)
+        vv                  (partial gpo/start-vv layout-bounds)
+        children-gap-width  (* layout-gap-row (dec num-children))
+        children-gap-height (* layout-gap-col (dec num-children))
+
+        line-height
+        (if (and row? content-stretch?)
+          (+ line-height (/ (- layout-height total-height) num-lines))
+          line-height)
+
+        line-width
+        (if (and col? content-stretch?)
+          (+ line-width (/ (- layout-width total-width) num-lines))
+          line-width)
+
+        start-p
+        (cond-> base-p
+          ;; X AXIS
+          (and row? h-center? (not space-around?) (not space-between?))
+          (-> (gpt/add (hv (/ layout-width 2)))
+              (gpt/subtract (hv (/ (+ line-width children-gap-width) 2))))
+
+          (and row? h-end? (not space-around?) (not space-between?))
+          (-> (gpt/add (hv layout-width))
+              (gpt/subtract (hv (+ line-width children-gap-width))))
+
+          ;; Y AXIS
+          (and col? v-center? (not space-around?) (not space-between?))
+          (-> (gpt/add (vv (/ layout-height 2)))
+              (gpt/subtract (vv (/ (+ line-height children-gap-height) 2))))
+
+          (and col? v-end? (not space-around?) (not space-between?))
+          (-> (gpt/add (vv layout-height))
+              (gpt/subtract (vv (+ line-height children-gap-height)))))]
+
+    start-p))
+
+(defn get-child-position
+  "Calculates the position for the current shape given the layout-data context"
+  [parent child
+   child-width child-height
+   {:keys [start-p layout-gap-row layout-gap-col margin-x margin-y line-height line-width] :as layout-data}]
+
+  (let [row?         (ctl/row? parent)
+        col?         (ctl/col? parent)
+        h-start?     (ctl/h-start? parent)
+        h-center?    (ctl/h-center? parent)
+        h-end?       (ctl/h-end? parent)
+        v-start?     (ctl/v-start? parent)
+        v-center?    (ctl/v-center? parent)
+        v-end?       (ctl/v-end? parent)
+
+        self-start?  (ctl/align-self-start? child)
+        self-end?    (ctl/align-self-end? child)
+        self-center? (ctl/align-self-center? child)
+        align-self?  (or self-start? self-end? self-center?)
+
+        v-start?     (if (or col? (not align-self?)) v-start? self-start?)
+        v-center?    (if (or col? (not align-self?)) v-center? self-center?)
+        v-end?       (if (or col? (not align-self?)) v-end? self-end?)
+
+        h-start?     (if (or row? (not align-self?)) h-start? self-start?)
+        h-center?    (if (or row? (not align-self?)) h-center? self-center?)
+        h-end?       (if (or row? (not align-self?)) h-end? self-end?)
+
+        [margin-top margin-right margin-bottom margin-left] (ctl/child-margins child)
+
+        points (:points parent)
+        hv     (partial gpo/start-hv points)
+        vv     (partial gpo/start-vv points)
+
+        corner-p
+        (cond-> start-p
+          ;; COLUMN DIRECTION
+          col?
+          (cond-> (some? margin-top)
+            (gpt/add (vv margin-top))
+
+            h-center?
+            (gpt/add (hv (- (/ child-width 2))))
+
+            h-end?
+            (gpt/add (hv (- child-width)))
+
+            h-start?
+            (gpt/add (hv margin-left))
+
+            h-center?
+            (gpt/add (hv (+ (/ line-width 2) (/ (- margin-left margin-right) 2))))
+
+            h-end?
+            (gpt/add (hv (+ line-width (- margin-right)))))
+
+          ;; ROW DIRECTION
+          row?
+          (cond-> v-center?
+            (gpt/add (vv (- (/ child-height 2))))
+
+            v-end?
+            (gpt/add (vv (- child-height)))
+
+            (some? margin-left)
+            (gpt/add (hv margin-left))
+
+            v-start?
+            (gpt/add (vv margin-top))
+
+            v-center?
+            (gpt/add (vv (+ (/ line-height 2) (/ (- margin-top margin-bottom) 2))))
+
+            v-end?
+            (gpt/add (vv (+ line-height (- margin-bottom)))))
+
+          ;; Margins
+          (some? margin-x)
+          (gpt/add (hv margin-x))
+
+          (some? margin-y)
+          (gpt/add (vv margin-y)))
+
+        ;; Fix position when layout is flipped
+        corner-p
+        (cond-> corner-p
+          (:flip-x parent)
+          (gpt/add (hv child-width))
+
+          (:flip-y parent)
+          (gpt/add (vv child-height)))
+
+        next-p
+        (cond-> start-p
+          row?
+          (-> (gpt/add (hv (+ child-width layout-gap-row)))
+              (gpt/add (hv (+ margin-left margin-right))))
+
+          col?
+          (-> (gpt/add (vv (+ margin-top margin-bottom)))
+              (gpt/add (vv (+ child-height layout-gap-col))))
+          
+          (some? margin-x)
+          (gpt/add (hv margin-x))
+
+          (some? margin-y)
+          (gpt/add (vv margin-y)))
+
+        layout-data
+        (assoc layout-data :start-p next-p)]
+
+    [corner-p layout-data]))

common/src/app/common/geom/shapes/intersect.cljc

@@ -348,3 +348,25 @@
        :points
        (every? (partial has-point-rect? rect))))
 
+
+(defn line-line-intersect
+  "Calculates the interesection point for two lines given by the points a-b and b-c"
+  [a b c d]
+
+  (let [;; Line equation representation: ax + by + c = 0
+        a1 (- (:y b) (:y a))
+        b1 (- (:x a) (:x b))
+        c1 (+ (* a1 (:x a)) (* b1 (:y a)))
+
+        a2 (- (:y d) (:y c))
+        b2 (- (:x c) (:x d))
+        c2 (+ (* a2 (:x c)) (* b2 (:y c)))
+
+        ;; Cramer's rule
+        det (- (* a1 b2) (* a2 b1))]
+
+    ;; If almost zero the lines are parallel
+    (when (not (mth/almost-zero? det))
+      (let [x (/ (- (* b2 c1) (* b1 c2)) det)
+            y (/ (- (* c2 a1) (* c1 a2)) det)]
+        (gpt/point x y)))))

common/src/app/common/geom/shapes/layout.cljc

@@ -1,327 +0,0 @@
-;; This Source Code Form is subject to the terms of the Mozilla Public
-;; License, v. 2.0. If a copy of the MPL was not distributed with this
-;; file, You can obtain one at http://mozilla.org/MPL/2.0/.
-;;
-;; Copyright (c) KALEIDOS INC
-
-(ns app.common.geom.shapes.layout
-  (:require
-   [app.common.geom.matrix :as gmt]
-   [app.common.geom.point :as gpt]
-   [app.common.geom.shapes.rect :as gre]))
-
-;; :layout                 ;; true if active, false if not
-;; :layout-flex-dir        ;; :row, :column, :reverse-row, :reverse-column
-;; :layout-gap             ;; number could be negative
-;; :layout-type            ;; :packed, :space-between, :space-around
-;; :layout-wrap-type       ;; :wrap, :no-wrap
-;; :layout-padding-type    ;; :simple, :multiple
-;; :layout-padding         ;; {:p1 num :p2 num :p3 num :p4 num} number could be negative
-;; :layout-h-orientation   ;; :top, :center, :bottom
-;; :layout-v-orientation   ;; :left, :center, :right
-
-(defn col?
-  [{:keys [layout-flex-dir]}]
-  (or (= :column layout-flex-dir) (= :reverse-column layout-flex-dir)))
-
-(defn row?
-  [{:keys [layout-flex-dir]}]
-  (or (= :row layout-flex-dir) (= :reverse-row layout-flex-dir)))
-
-(defn h-start?
-  [{:keys [layout-h-orientation]}]
-  (= layout-h-orientation :left))
-
-(defn h-center?
-  [{:keys [layout-h-orientation]}]
-  (= layout-h-orientation :center))
-
-(defn h-end?
-  [{:keys [layout-h-orientation]}]
-  (= layout-h-orientation :right))
-
-(defn v-start?
-  [{:keys [layout-v-orientation]}]
-  (= layout-v-orientation :top))
-
-(defn v-center?
-  [{:keys [layout-v-orientation]}]
-  (= layout-v-orientation :center))
-
-(defn v-end?
-  [{:keys [layout-v-orientation]}]
-  (= layout-v-orientation :bottom))
-
-(defn add-padding [transformed-rect {:keys [layout-padding-type layout-padding]}]
-  (let [{:keys [p1 p2 p3 p4]} layout-padding
-        [p1 p2 p3 p4]
-        (if (= layout-padding-type :multiple)
-          [p1 p2 p3 p4]
-          [p1 p1 p1 p1])]
-
-    (-> transformed-rect
-        (update :y + p1)
-        (update :width - p2 p3)
-        (update :x + p3)
-        (update :height - p1 p4))))
-
-(defn calc-layout-lines
-  [{:keys [layout-gap layout-wrap-type] :as shape} children {:keys [width height] :as layout-bounds}]
-
-  (let [wrap? (= layout-wrap-type :wrap)
-
-        reduce-fn
-        (fn [[{:keys [line-width line-height num-children] :as line-data} result] child]
-          (let [child-bounds (-> child :points gre/points->rect)
-                next-width   (-> child-bounds :width)
-                next-height  (-> child-bounds :height)]
-
-            (if (and (some? line-data)
-                     (or (not wrap?)
-                         (and (col? shape) (<= (+ line-width next-width (* layout-gap num-children)) width))
-                         (and (row? shape) (<= (+ line-height next-height (* layout-gap num-children)) height))))
-
-              [{:line-width   (if (col? shape) (+ line-width next-width) (max line-width next-width))
-                :line-height  (if (row? shape) (+ line-height next-height) (max line-height next-height))
-                :num-children (inc num-children)}
-               result]
-
-              [{:line-width   next-width
-                :line-height  next-height
-                :num-children 1}
-               (cond-> result (some? line-data) (conj line-data))])))
-
-        [line-data layout-lines] (reduce reduce-fn [nil []] children)]
-
-    (cond-> layout-lines (some? line-data) (conj line-data))))
-
-(defn calc-layout-lines-position
-  [{:keys [layout-gap layout-type] :as shape} {:keys [x y width height]} layout-lines]
-
-  (letfn [(get-base-line
-            [total-width total-height]
-
-            (let [base-x
-                  (cond
-                    (and (row? shape) (h-center? shape))
-                    (+ x (/ (- width total-width) 2))
-
-                    (and (row? shape) (h-end? shape))
-                    (+ x width (- total-width))
-
-                    :else x)
-
-                  base-y
-                  (cond
-                    (and (col? shape) (v-center? shape))
-                    (+ y (/ (- height total-height) 2))
-
-                    (and (col? shape) (v-end? shape))
-                    (+ y height (- total-height))
-
-                    :else y)]
-
-              [base-x base-y]))
-
-          (get-start-line
-            [{:keys [line-width line-height num-children]} base-x base-y]
-
-            (let [children-gap (* layout-gap (dec num-children))
-
-                  start-x
-                  (cond
-                    (or (and (col? shape) (= :space-between layout-type))
-                        (and (col? shape) (= :space-around layout-type)))
-                    x
-
-                    (and (col? shape) (h-center? shape))
-                    (- (+ x (/ width 2)) (/ (+ line-width children-gap) 2))
-
-                    (and (col? shape) (h-end? shape))
-                    (- (+ x width) (+ line-width children-gap))
-
-                    (and (row? shape) (h-center? shape))
-                    (+ base-x (/ line-width 2))
-
-                    (and (row? shape) (h-end? shape))
-                    (+ base-x line-width)
-
-                    (row? shape)
-                    base-x
-
-                    :else
-                    x)
-
-                  start-y
-                  (cond
-                    (or (and (row? shape) (= :space-between layout-type))
-                        (and (row? shape) (= :space-around layout-type)))
-                    y
-
-                    (and (row? shape) (v-center? shape))
-                    (- (+ y (/ height 2)) (/ (+ line-height children-gap) 2))
-
-                    (and (row? shape) (v-end? shape))
-                    (- (+ y height) (+ line-height children-gap))
-
-                    (and (col? shape) (v-center? shape))
-                    (+ base-y (/ line-height 2))
-
-                    (and (col? shape) (v-end? shape))
-                    (+ base-y line-height)
-
-                    (col? shape)
-                    base-y
-
-                    :else
-                    y)]
-              [start-x start-y]))
-
-          (get-next-line
-            [{:keys [line-width line-height]} base-x base-y]
-            (let [next-x (if (col? shape) base-x (+ base-x line-width layout-gap))
-                  next-y (if (row? shape) base-y (+ base-y line-height layout-gap))]
-              [next-x next-y]))
-
-          (add-lines [[total-width total-height] {:keys [line-width line-height]}]
-            [(+ total-width line-width)
-             (+ total-height line-height)])
-
-          (add-starts [[result base-x base-y] layout-line]
-            (let [[start-x start-y] (get-start-line layout-line base-x base-y)
-                  [next-x next-y]   (get-next-line layout-line base-x base-y)]
-              [(conj result
-                     (assoc layout-line
-                            :start-x start-x
-                            :start-y start-y))
-               next-x
-               next-y]))]
-
-    (let [[total-width total-height]
-          (->> layout-lines (reduce add-lines [0 0]))
-
-          total-width (+ total-width (* layout-gap (dec (count layout-lines))))
-          total-height (+ total-height (* layout-gap (dec (count layout-lines))))
-
-          [base-x base-y]
-          (get-base-line total-width total-height)
-
-          [layout-lines _ _ _ _]
-          (reduce add-starts [[] base-x base-y] layout-lines)]
-      layout-lines)))
-
-(defn calc-layout-line-data
-  [{:keys [layout-type layout-gap] :as shape}
-   {:keys [width height] :as layout-bounds}
-   {:keys [num-children line-width line-height] :as line-data}]
-
-  (let [layout-gap
-        (cond
-          (= :packed layout-type)
-          layout-gap
-
-          (= :space-around layout-type)
-          0
-
-          (and (col? shape) (= :space-between layout-type))
-          (/ (- width line-width) (dec num-children))
-
-          (and (row? shape) (= :space-between layout-type))
-          (/ (- height line-height) (dec num-children)))
-
-        margin-x
-        (if (and (col? shape) (= :space-around layout-type))
-          (/ (- width line-width) (inc num-children) )
-          0)
-
-        margin-y
-        (if (and (row? shape) (= :space-around layout-type))
-          (/ (- height line-height) (inc num-children))
-          0)]
-
-    (assoc line-data
-           :layout-gap layout-gap
-           :margin-x margin-x
-           :margin-y margin-y)))
-
-
-(defn calc-layout-data
-  "Digest the layout data to pass it to the constrains"
-  [{:keys [layout-flex-dir] :as shape} children layout-bounds]
-
-  (let [reverse? (or (= :reverse-row layout-flex-dir) (= :reverse-column layout-flex-dir))
-        layout-bounds (-> layout-bounds (add-padding shape))
-        children (cond->> children reverse? reverse)
-        layout-lines
-        (->> (calc-layout-lines shape children layout-bounds)
-             (calc-layout-lines-position shape layout-bounds)
-             (map (partial calc-layout-line-data shape layout-bounds)))]
-
-    {:layout-lines layout-lines
-     :reverse? reverse?}))
-
-(defn next-p
-  "Calculates the position for the current shape given the layout-data context"
-  [shape
-   {:keys [width height]}
-   {:keys [start-x start-y layout-gap margin-x margin-y] :as layout-data}]
-
-  (let [pos-x
-        (cond
-          (and (row? shape) (h-center? shape))
-          (- start-x (/ width 2))
-
-          (and (row? shape) (h-end? shape))
-          (- start-x width)
-
-          :else
-          start-x)
-
-        pos-y
-        (cond
-          (and (col? shape) (v-center? shape))
-          (- start-y (/ height 2))
-
-          (and (col? shape) (v-end? shape))
-          (- start-y height)
-
-          :else
-          start-y)
-
-        pos-x (cond-> pos-x (some? margin-x) (+ margin-x))
-        pos-y (cond-> pos-y (some? margin-y) (+ margin-y))
-
-        corner-p (gpt/point pos-x pos-y)
-
-        next-x
-        (if (col? shape)
-          (+ start-x width layout-gap)
-          start-x)
-
-        next-y
-        (if (row? shape)
-          (+ start-y height layout-gap)
-          start-y)
-
-        next-x (cond-> next-x (some? margin-x) (+ margin-x))
-        next-y (cond-> next-y (some? margin-y) (+ margin-y))
-
-        layout-data
-        (assoc layout-data :start-x next-x :start-y next-y)]
-    [corner-p layout-data]))
-
-(defn calc-layout-modifiers
-  "Calculates the modifiers for the layout"
-  [parent transform child layout-data]
-
-  (let [bounds    (-> child :points gre/points->selrect)
-
-        [corner-p layout-data] (next-p parent bounds layout-data)
-
-        delta-p   (-> corner-p
-                      (gpt/subtract (gpt/point bounds))
-                      (cond-> (some? transform) (gpt/transform transform)))
-
-        modifiers {:displacement-after (gmt/translate-matrix delta-p)}]
-
-    [modifiers layout-data]))

common/src/app/common/geom/shapes/modifiers.cljc

@@ -7,188 +7,161 @@
 (ns app.common.geom.shapes.modifiers
   (:require
    [app.common.data :as d]
-   [app.common.geom.matrix :as gmt]
+   [app.common.data.macros :as dm]
    [app.common.geom.point :as gpt]
-   [app.common.geom.shapes.common :as gco]
    [app.common.geom.shapes.constraints :as gct]
-   [app.common.geom.shapes.layout :as gcl]
-   [app.common.geom.shapes.rect :as gpr]
+   [app.common.geom.shapes.flex-layout :as gcl]
+   [app.common.geom.shapes.pixel-precision :as gpp]
    [app.common.geom.shapes.transforms :as gtr]
-   [app.common.math :as mth]
+   [app.common.pages.helpers :as cph]
+   [app.common.spec :as us]
+   [app.common.types.modifiers :as ctm]
+   [app.common.types.shape.layout :as ctl]
    [app.common.uuid :as uuid]))
 
-(defn set-pixel-precision
-  "Adjust modifiers so they adjust to the pixel grid"
-  [modifiers shape]
+;;#?(:cljs
+;;   (defn modif->js
+;;     [modif-tree objects]
+;;     (clj->js (into {}
+;;                    (map (fn [[k v]]
+;;                           [(get-in objects [k :name]) v]))
+;;                    modif-tree))))
 
-  (if (and (some? (:resize-transform modifiers))
-           (not (gmt/unit? (:resize-transform modifiers))))
-    ;; If we're working with a rotation we don't handle pixel precision because
-    ;; the transformation won't have the precision anyway
-    modifiers
+(defn resolve-tree-sequence
+  "Given the ids that have changed search for layout roots to recalculate"
+  [ids objects]
 
-    (let [center (gco/center-shape shape)
-          base-bounds (-> (:points shape) (gpr/points->rect))
+  (us/assert!
+   :expr (or (nil? ids) (set? ids))
+   :hint (dm/str "tree sequence from not set: " ids))
 
-          raw-bounds
-          (-> (gtr/transform-bounds (:points shape) center modifiers)
-              (gpr/points->rect))
+  (letfn [(get-tree-root ;; Finds the tree root for the current id
+            [id]
 
-          flip-x? (neg? (get-in modifiers [:resize-vector :x]))
-          flip-y? (or (neg? (get-in modifiers [:resize-vector :y]))
-                      (neg? (get-in modifiers [:resize-vector-2 :y])))
+            (loop [current id
+                   result  id]
+              (let [shape (get objects current)
+                    parent (get objects (:parent-id shape))]
+                (cond
+                  (or (not shape) (= uuid/zero current))
+                  result
 
-          path? (= :path (:type shape))
-          vertical-line? (and path? (<= (:width raw-bounds) 0.01))
-          horizontal-line? (and path? (<= (:height raw-bounds) 0.01))
+                  ;; Frame found, but not layout we return the last layout found (or the id)
+                  (and (= :frame (:type parent))
+                       (not (ctl/layout? parent)))
+                  result
 
-          target-width (if vertical-line?
-                         (:width raw-bounds)
-                         (max 1 (mth/round (:width raw-bounds))))
+                  ;; Layout found. We continue upward but we mark this layout
+                  (ctl/layout? parent)
+                  (recur (:id parent) (:id parent))
 
-          target-height (if horizontal-line?
-                          (:height raw-bounds)
-                          (max 1 (mth/round (:height raw-bounds))))
+                  ;; If group or boolean or other type of group we continue with the last result
+                  :else
+                  (recur (:id parent) result)))))
 
-          target-p (cond-> (gpt/round (gpt/point raw-bounds))
-                     flip-x?
-                     (update :x + target-width)
+          (calculate-common-roots ;; Given some roots retrieves the minimum number of tree roots
+            [result id]
+            (if (= id uuid/zero)
+              result
+              (let [root (get-tree-root id)
 
-                     flip-y?
-                     (update :y + target-height))
+                    ;; Remove the children from the current root
+                    result
+                    (into #{} (remove #(cph/is-child? objects root %)) result)
 
-          ratio-width (/ target-width (:width raw-bounds))
-          ratio-height (/ target-height (:height raw-bounds))
+                    contains-parent?
+                    (some #(cph/is-child? objects % root) result)]
 
-          modifiers
-          (-> modifiers
-              (d/without-nils)
-              (d/update-in-when
-               [:resize-vector :x] #(* % ratio-width))
+                (cond-> result
+                  (not contains-parent?)
+                  (conj root)))))
 
-              ;; If the resize-vector-2 modifier arrives means the resize-vector
-              ;; will only resize on the x axis
-              (cond-> (nil? (:resize-vector-2 modifiers))
-                (d/update-in-when
-                 [:resize-vector :y] #(* % ratio-height)))
+          (generate-tree ;; Generate a tree sequence from a given root id
+            [id]
+            (->> (tree-seq
+                  #(d/not-empty? (dm/get-in objects [% :shapes]))
+                  #(dm/get-in objects [% :shapes])
+                  id)
+                 (map #(get objects %))))]
 
-              (d/update-in-when
-               [:resize-vector-2 :y] #(* % ratio-height)))
+    (let [roots (->> ids (reduce calculate-common-roots #{}))]
+      (concat
+       (when (contains? ids uuid/zero) [(get objects uuid/zero)])
+       (mapcat generate-tree roots)))))
 
-          origin (get modifiers :resize-origin)
-          origin-2 (get modifiers :resize-origin-2)
+(defn- set-children-modifiers
+  "Propagates the modifiers from a parent too its children applying constraints if necesary"
+  [modif-tree objects parent transformed-parent ignore-constraints]
+  (let [children  (:shapes parent)
+        modifiers (dm/get-in modif-tree [(:id parent) :modifiers])]
 
-          resize-v  (get modifiers :resize-vector)
-          resize-v-2  (get modifiers :resize-vector-2)
-          displacement  (get modifiers :displacement)
+    (if (ctm/only-move? modifiers)
+      ;; Move modifiers don't need to calculate constraints
+      (loop [modif-tree modif-tree
+             children (seq children)]
+        (if-let [current (first children)]
+          (recur (update-in modif-tree [current :modifiers] ctm/add-modifiers modifiers)
+                 (rest children))
+          modif-tree))
 
-          target-p-inv
-          (-> target-p
-              (gpt/transform
-               (cond-> (gmt/matrix)
-                 (some? displacement)
-                 (gmt/multiply (gmt/inverse displacement))
+      ;; Check the constraints, then resize
+      (let [parent (gtr/transform-shape parent (ctm/select-parent-modifiers modifiers))]
+        (loop [modif-tree modif-tree
+               children (seq children)]
+          (if-let [current (first children)]
+            (let [child-modifiers (gct/calc-child-modifiers parent (get objects current) modifiers ignore-constraints transformed-parent)]
+              (recur (cond-> modif-tree
+                       (not (ctm/empty? child-modifiers))
+                       (update-in [current :modifiers] ctm/add-modifiers child-modifiers))
+                     (rest children)))
+            modif-tree))))))
 
-                 (and (some? resize-v) (some? origin))
-                 (gmt/scale (gpt/inverse resize-v) origin)
-
-                 (and (some? resize-v-2) (some? origin-2))
-                 (gmt/scale (gpt/inverse resize-v-2) origin-2))))
-
-          delta-v (gpt/subtract target-p-inv (gpt/point base-bounds))
-
-          modifiers
-          (-> modifiers
-              (d/update-when :displacement #(gmt/multiply (gmt/translate-matrix delta-v) %))
-              (cond-> (nil? (:displacement modifiers))
-                (assoc :displacement (gmt/translate-matrix delta-v))))]
-      modifiers)))
-
-
-(defn set-children-modifiers
-  [modif-tree shape objects ignore-constraints snap-pixel?]
-  (letfn [(set-child [transformed-rect snap-pixel? modif-tree child]
-            (let [modifiers (get-in modif-tree [(:id shape) :modifiers])
-                  child-modifiers (gct/calc-child-modifiers shape child modifiers ignore-constraints transformed-rect)
-                  child-modifiers (cond-> child-modifiers snap-pixel? (set-pixel-precision child))]
+(defn- process-layout-children
+  [modif-tree objects parent transformed-parent]
+  (letfn [(process-child [modif-tree child]
+            (let [modifiers (dm/get-in modif-tree [(:id parent) :modifiers])
+                  child-modifiers (-> modifiers
+                                      (ctm/select-child-geometry-modifiers)
+                                      (gcl/normalize-child-modifiers parent child transformed-parent))]
               (cond-> modif-tree
-                (not (gtr/empty-modifiers? child-modifiers))
-                (update-in [(:id child) :modifiers] #(merge child-modifiers %)))))]
-    (let [children (map (d/getf objects) (:shapes shape))
-          modifiers (get-in modif-tree [(:id shape) :modifiers])
-          transformed-rect (gtr/transform-selrect (:selrect shape) modifiers)
-          resize-modif? (or (:resize-vector modifiers) (:resize-vector-2 modifiers))]
-      (reduce (partial set-child transformed-rect (and snap-pixel? resize-modif?)) modif-tree children))))
+                (not (ctm/empty? child-modifiers))
+                (update-in [(:id child) :modifiers] ctm/add-modifiers child-modifiers))))]
+    (let [children (map (d/getf objects) (:shapes transformed-parent))]
+      (reduce process-child modif-tree children))))
 
-(defn group? [shape]
-  (or (= :group (:type shape))
-      (= :bool (:type shape))))
+(defn- set-layout-modifiers
+  [modif-tree objects parent]
 
-(defn merge-modifiers
-  [modif-tree ids modifiers]
-  (reduce
-   (fn [modif-tree id]
-     (update-in modif-tree [id :modifiers] #(merge % modifiers)))
-   modif-tree
-   ids))
+  (letfn [(apply-modifiers [modif-tree child]
+            (let [modifiers (-> (dm/get-in modif-tree [(:id child) :modifiers])
+                                (ctm/select-geometry))]
+              (cond
+                (cph/group-like-shape? child)
+                (gtr/apply-group-modifiers child objects modif-tree)
 
-(defn set-layout-modifiers
-  [modif-tree objects id]
+                (some? modifiers)
+                (gtr/transform-shape child modifiers)
 
-  (letfn [(transform-child [parent child]
-            (let [modifiers (get modif-tree (:id child))
+                :else
+                child)))
 
-                  child
-                  (cond-> child
-                    (not (group? child))
-                    (-> (merge modifiers) gtr/transform-shape)
-
-                    (group? child)
-                    (gtr/apply-group-modifiers objects modif-tree))
-
-                  child
-                  (-> child
-                      (gtr/apply-transform (gmt/transform-in (gco/center-shape parent) (:transform-inverse parent))))]
-
-              child))
-
-          (set-layout-modifiers [parent transform [layout-data modif-tree] child]
-            (let [[modifiers layout-data]
-                  (gcl/calc-layout-modifiers parent transform child layout-data)
+          (set-child-modifiers [parent [layout-line modif-tree] child]
+            (let [[modifiers layout-line]
+                  (gcl/layout-child-modifiers parent child layout-line)
 
                   modif-tree
                   (cond-> modif-tree
-                    (not (gtr/empty-modifiers? modifiers))
-                    (merge-modifiers [(:id child)] modifiers)
+                    (d/not-empty? modifiers)
+                    (update-in [(:id child) :modifiers] ctm/add-modifiers modifiers))]
 
-                    (and (not (gtr/empty-modifiers? modifiers)) (group? child))
-                    (merge-modifiers (:shapes child) modifiers))]
+              [layout-line modif-tree]))]
 
-              [layout-data modif-tree]))]
-
-    (let [modifiers         (get modif-tree id)
-
-          shape             (-> (get objects id) (merge modifiers) gtr/transform-shape)
-
-
-          children          (->> (:shapes shape)
-                                 (map (d/getf objects))
-                                 (map (partial transform-child shape)))
-
-          center (gco/center-shape shape)
-          {:keys [transform transform-inverse]} shape
-
-          shape
-          (-> shape
-              (gtr/apply-transform (gmt/transform-in center transform-inverse)))
-
-          transformed-rect (:selrect shape)
-
-          layout-data       (gcl/calc-layout-data shape children transformed-rect)
-          children          (into [] (cond-> children (:reverse? layout-data) reverse))
-
-          max-idx           (dec (count children))
-          layout-lines      (:layout-lines layout-data)]
+    (let [children     (map (d/getf objects) (:shapes parent))
+          children     (->> children (map (partial apply-modifiers modif-tree)))
+          layout-data  (gcl/calc-layout-data parent children)
+          children     (into [] (cond-> children (:reverse? layout-data) reverse))
+          max-idx      (dec (count children))
+          layout-lines (:layout-lines layout-data)]
 
       (loop [modif-tree modif-tree
              layout-line (first layout-lines)
@@ -199,92 +172,146 @@
                 children (subvec children from-idx to-idx)
 
                 [_ modif-tree]
-                (reduce (partial set-layout-modifiers shape transform) [layout-line modif-tree] children)]
-
+                (reduce (partial set-child-modifiers parent) [layout-line modif-tree] children)]
             (recur modif-tree (first pending) (rest pending) to-idx))
 
           modif-tree)))))
 
-(defn get-first-layout
-  [id objects]
+(defn- calc-auto-modifiers
+  "Calculates the modifiers to adjust the bounds for auto-width/auto-height shapes"
+  [objects parent]
+  (letfn [(set-parent-auto-width
+            [modifiers auto-width]
+            (let [origin (-> parent :points first)
+                  scale-width (/ auto-width (-> parent :selrect :width) )]
+              (-> modifiers
+                  (ctm/resize-parent (gpt/point scale-width 1) origin (:transform parent) (:transform-inverse parent)))))
 
-  (loop [current id
-         result  id]
-    (let [shape (get objects current)
-          parent (get objects (:parent-id shape))]
-      (cond
-        (or (not shape) (= uuid/zero current))
-        result
+          (set-parent-auto-height
+            [modifiers auto-height]
+            (let [origin (-> parent :points first)
+                  scale-height (/ auto-height (-> parent :selrect :height) )]
+              (-> modifiers
+                  (ctm/resize-parent (gpt/point 1 scale-height) origin (:transform parent) (:transform-inverse parent)))))]
 
-        ;; Frame found, but not layout we return the last layout found (or the id)
-        (and (= :frame (:type parent))
-             (not (:layout parent)))
-        result
+    (let [children (->> parent :shapes (map (d/getf objects)))
 
-        ;; Layout found. We continue upward but we mark this layout
-        (and (= :frame (:type parent))
-             (:layout parent))
-        (:id parent)
+          {auto-width :width auto-height :height}
+          (when (and (d/not-empty? children) (or (ctl/auto-height? parent) (ctl/auto-width? parent)))
+            (gcl/layout-content-bounds parent children))]
 
-        ;; If group or boolean or other type of group we continue with the last result
-        :else
-        (recur (:id parent) result)))))
+      (cond-> (ctm/empty)
+        (and (some? auto-width) (ctl/auto-width? parent))
+        (set-parent-auto-width auto-width)
 
-(defn resolve-layout-ids
-  "Given a list of ids, resolve the parent layouts that will need to update. This will go upwards
-  in the tree while a layout is found"
-  [ids objects]
+        (and (some? auto-height) (ctl/auto-height? parent))
+        (set-parent-auto-height auto-height)))))
 
-  (into (d/ordered-set)
-        (map #(get-first-layout % objects))
-        ids))
+(defn- propagate-modifiers
+  "Propagate modifiers to its children"
+  [objects ignore-constraints [modif-tree autolayouts] parent]
+  (let [parent-id (:id parent)
+        root? (= uuid/zero parent-id)
+        modifiers (-> (dm/get-in modif-tree [parent-id :modifiers])
+                      (ctm/select-geometry))
+        transformed-parent (gtr/transform-shape parent modifiers)
+
+        has-modifiers? (ctm/child-modifiers? modifiers)
+        layout? (ctl/layout? parent)
+        auto?   (or (ctl/auto-height? transformed-parent) (ctl/auto-width? transformed-parent))
+        parent? (or (cph/group-like-shape? parent) (cph/frame-shape? parent))
+
+        ;; If the current child is inside the layout we ignore the constraints
+        inside-layout? (ctl/inside-layout? objects parent)]
+
+    [(cond-> modif-tree
+       (and (not layout?) has-modifiers? parent? (not root?))
+       (set-children-modifiers objects parent transformed-parent (or ignore-constraints inside-layout?))
+
+       layout?
+       (-> (process-layout-children objects parent transformed-parent)
+           (set-layout-modifiers objects transformed-parent)))
+
+     ;; Auto-width/height can change the positions in the parent so we need to recalculate
+     (cond-> autolayouts auto? (conj (:id parent)))]))
+
+(defn- apply-structure-modifiers
+  [objects modif-tree]
+  (letfn [(apply-shape [objects [id {:keys [modifiers]}]]
+            (cond-> objects
+              (ctm/has-structure? modifiers)
+              (update id ctm/apply-structure-modifiers modifiers)))]
+    (reduce apply-shape objects modif-tree)))
+
+(defn- apply-partial-objects-modifiers
+  [objects tree-seq modif-tree]
+
+  (letfn [(apply-shape [objects {:keys [id] :as shape}]
+            (if (cph/group-shape? shape)
+              (let [children (cph/get-children objects id)]
+                (assoc objects id
+                       (cond
+                         (cph/mask-shape? shape)
+                         (gtr/update-mask-selrect shape children)
+
+                         :else
+                         (gtr/update-group-selrect shape children))))
+
+              (let [modifiers (get-in modif-tree [id :modifiers])
+                    object (cond-> shape
+                             (some? modifiers)
+                             (gtr/transform-shape modifiers))]
+                (assoc objects id object))))]
+
+    (reduce apply-shape objects (reverse tree-seq))))
+
+(defn merge-modif-tree
+  [modif-tree other-tree]
+  (reduce (fn [modif-tree [id {:keys [modifiers]}]]
+            (update-in modif-tree [id :modifiers] ctm/add-modifiers modifiers))
+          modif-tree
+          other-tree))
+
+(defn sizing-auto-modifiers
+  "Recalculates the layouts to adjust the sizing: auto new sizes"
+  [modif-tree sizing-auto-layouts objects ignore-constraints]
+  (loop [modif-tree modif-tree
+         sizing-auto-layouts (reverse sizing-auto-layouts)]
+    (if-let [current (first sizing-auto-layouts)]
+      (let [parent-base (get objects current)
+            tree-seq (resolve-tree-sequence #{current} objects)
+
+            ;; Apply the current stack of transformations so we can calculate the auto-layouts
+            objects (apply-partial-objects-modifiers objects tree-seq modif-tree)
+
+            resize-modif-tree
+            {current {:modifiers (calc-auto-modifiers objects parent-base)}}
+
+            tree-seq (resolve-tree-sequence #{current} objects)
+
+            [resize-modif-tree _]
+            (reduce (partial propagate-modifiers objects ignore-constraints) [resize-modif-tree #{}] tree-seq)
+
+            modif-tree (merge-modif-tree modif-tree resize-modif-tree)]
+        (recur modif-tree (rest sizing-auto-layouts)))
+      modif-tree)))
 
 (defn set-objects-modifiers
-  [ids objects get-modifier ignore-constraints snap-pixel?]
+  [modif-tree objects ignore-constraints snap-pixel?]
 
-  (let [set-modifiers
-        (fn [modif-tree id]
-          (let [shape (get objects id)
-                modifiers (cond-> (get-modifier shape) snap-pixel? (set-pixel-precision shape))]
-            (-> modif-tree
-                (assoc id {:modifiers modifiers}))))
+  (let [objects (apply-structure-modifiers objects modif-tree)
+        shapes-tree (resolve-tree-sequence (-> modif-tree keys set) objects)
 
-        modif-tree (reduce set-modifiers {} ids)
+        [modif-tree sizing-auto-layouts]
+        (reduce (partial propagate-modifiers objects ignore-constraints) [modif-tree #{}] shapes-tree)
 
-        ids (resolve-layout-ids ids objects)
+        ;; Calculate hug layouts positions
+        modif-tree (sizing-auto-modifiers modif-tree sizing-auto-layouts objects ignore-constraints)
 
-        ;; First: Calculate children modifiers (constraints, etc)
-        [modif-tree touched-layouts]
-        (loop [current         (first ids)
-               pending         (rest ids)
-               modif-tree      modif-tree
-               touched-layouts (d/ordered-set)]
-          (if (some? current)
-            (let [shape (get objects current)
-                  pending (concat pending (:shapes shape))
-
-                  touched-layouts
-                  (cond-> touched-layouts
-                    (:layout shape)
-                    (conj (:id shape)))
-
-                  modif-tree
-                  (-> modif-tree
-                      (set-children-modifiers shape objects ignore-constraints snap-pixel?))]
-
-              (recur (first pending) (rest pending) modif-tree touched-layouts))
-
-            [modif-tree touched-layouts]))
-
-        ;; Second: Calculate layout positioning
         modif-tree
-        (loop [current (first touched-layouts)
-               pending (rest touched-layouts)
-               modif-tree modif-tree]
-
-          (if (some? current)
-            (let [modif-tree (set-layout-modifiers modif-tree objects current)]
-              (recur (first pending) (rest pending) modif-tree))
-            modif-tree))]
+        (cond-> modif-tree
+          snap-pixel? (gpp/adjust-pixel-precision objects))]
 
+    ;;#?(:cljs
+    ;;   (.log js/console ">result" (modif->js modif-tree objects)))
     modif-tree))

common/src/app/common/geom/shapes/pixel_precision.cljc

@@ -0,0 +1,71 @@
+;; This Source Code Form is subject to the terms of the Mozilla Public
+;; License, v. 2.0. If a copy of the MPL was not distributed with this
+;; file, You can obtain one at http://mozilla.org/MPL/2.0/.
+;;
+;; Copyright (c) KALEIDOS INC
+
+(ns app.common.geom.shapes.pixel-precision
+  (:require
+   [app.common.data :as d]
+   [app.common.data.macros :as dm]
+   [app.common.geom.point :as gpt]
+   [app.common.geom.shapes.points :as gpo]
+   [app.common.geom.shapes.rect :as gpr]
+   [app.common.geom.shapes.transforms :as gtr]
+   [app.common.math :as mth]
+   [app.common.pages.helpers :as cph]
+   [app.common.types.modifiers :as ctm]))
+
+(defn size-pixel-precision
+  [modifiers {:keys [points transform transform-inverse] :as shape}]
+  (let [origin        (gpo/origin points)
+        curr-width    (gpo/width-points points)
+        curr-height   (gpo/height-points points)
+
+        path?            (cph/path-shape? shape)
+        vertical-line?   (and path? (<= curr-width 0.01))
+        horizontal-line? (and path? (<= curr-height 0.01))
+
+        target-width  (if vertical-line? curr-width (max 1 (mth/round curr-width)))
+        target-height (if horizontal-line? curr-height (max 1 (mth/round curr-height)))
+
+        ratio-width  (/ target-width curr-width)
+        ratio-height (/ target-height curr-height)
+        scalev       (gpt/point ratio-width ratio-height)]
+    (-> modifiers
+        (ctm/resize scalev origin transform transform-inverse))))
+
+(defn position-pixel-precision
+  [modifiers {:keys [points]}]
+  (let [bounds        (gpr/points->rect points)
+        corner        (gpt/point bounds)
+        target-corner (gpt/round corner)
+        deltav        (gpt/to-vec corner target-corner)]
+    (-> modifiers
+        (ctm/move deltav))))
+
+(defn set-pixel-precision
+  "Adjust modifiers so they adjust to the pixel grid"
+  [modifiers shape]
+  (let [move? (ctm/only-move? modifiers)]
+    (cond-> modifiers
+      (not move?)
+      (size-pixel-precision shape)
+
+      :always
+      (position-pixel-precision shape))))
+
+(defn adjust-pixel-precision
+  [modif-tree objects]
+  (let [update-modifiers
+        (fn [modif-tree shape]
+          (let [modifiers (dm/get-in modif-tree [(:id shape) :modifiers])]
+            (if-not (ctm/has-geometry? modifiers)
+              modif-tree
+              (let [shape (gtr/transform-shape shape modifiers)]
+                (-> modif-tree
+                    (update-in [(:id shape) :modifiers] set-pixel-precision shape))))))]
+
+    (->> (keys modif-tree)
+         (map (d/getf objects))
+         (reduce update-modifiers modif-tree))))

common/src/app/common/geom/shapes/points.cljc

@@ -0,0 +1,62 @@
+;; This Source Code Form is subject to the terms of the Mozilla Public
+;; License, v. 2.0. If a copy of the MPL was not distributed with this
+;; file, You can obtain one at http://mozilla.org/MPL/2.0/.
+;;
+;; Copyright (c) KALEIDOS INC
+
+(ns app.common.geom.shapes.points
+  (:require
+   [app.common.geom.point :as gpt]))
+
+(defn origin
+  [points]
+  (nth points 0))
+
+(defn start-hv
+  "Horizontal vector from the origin with a magnitude `val`"
+  [[p0 p1 _ _] val]
+  (-> (gpt/to-vec p0 p1)
+      (gpt/unit)
+      (gpt/scale val)))
+
+(defn end-hv
+  "Horizontal vector from the oposite to the origin in the x axis with a magnitude `val`"
+  [[p0 p1 _ _] val]
+  (-> (gpt/to-vec p1 p0)
+      (gpt/unit)
+      (gpt/scale val)))
+
+(defn start-vv
+  "Vertical vector from the oposite to the origin in the x axis with a magnitude `val`"
+  [[p0 _ _ p3] val]
+  (-> (gpt/to-vec p0 p3)
+      (gpt/unit)
+      (gpt/scale val)))
+
+(defn end-vv
+  "Vertical vector from the oposite to the origin in the x axis with a magnitude `val`"
+  [[p0 _ _ p3] val]
+  (-> (gpt/to-vec p3 p0)
+      (gpt/unit)
+      (gpt/scale val)))
+
+(defn width-points
+  [[p0 p1 _ _]]
+  (gpt/length (gpt/to-vec p0 p1)))
+
+(defn height-points
+  [[p0 _ _ p3]]
+  (gpt/length (gpt/to-vec p0 p3)))
+
+(defn pad-points
+  [[p0 p1 p2 p3 :as points] pad-top pad-right pad-bottom pad-left]
+  (when (some? points)
+    (let [top-v    (start-vv points pad-top)
+          right-v  (end-hv points pad-right)
+          bottom-v (end-vv points pad-bottom)
+          left-v   (start-hv points pad-left)]
+
+      [(-> p0 (gpt/add left-v)  (gpt/add top-v))
+       (-> p1 (gpt/add right-v) (gpt/add top-v))
+       (-> p2 (gpt/add right-v) (gpt/add bottom-v))
+       (-> p3 (gpt/add left-v)  (gpt/add bottom-v))])))

common/src/app/common/geom/shapes/rect.cljc

@@ -11,14 +11,25 @@
    [app.common.math :as mth]))
 
 (defn make-rect
-  [x y width height]
-  (when (d/num? x y width height)
-    (let [width (max width 0.01)
-          height (max height 0.01)]
-      {:x x
-       :y y
-       :width width
-       :height height})))
+  ([p1 p2]
+   (let [xp1 (:x p1)
+         yp1 (:y p1)
+         xp2 (:x p2)
+         yp2 (:y p2)
+         x1 (min xp1 xp2)
+         y1 (min yp1 yp2)
+         x2 (max xp1 xp2)
+         y2 (max yp1 yp2)]
+     (make-rect x1 y1 (- x2 x1) (- y2 y1))))
+
+  ([x y width height]
+   (when (d/num? x y width height)
+     (let [width (max width 0.01)
+           height (max height 0.01)]
+       {:x x
+        :y y
+        :width width
+        :height height}))))
 
 (defn make-selrect
   [x y width height]
@@ -80,6 +91,19 @@
       (when (d/num? minx miny maxx maxy)
         (make-rect minx miny (- maxx minx) (- maxy miny))))))
 
+(defn squared-points
+  [points]
+  (when (d/not-empty? points)
+    (let [minx (transduce (keep :x) min ##Inf points)
+          miny (transduce (keep :y) min ##Inf points)
+          maxx (transduce (keep :x) max ##-Inf points)
+          maxy (transduce (keep :y) max ##-Inf points)]
+      (when (d/num? minx miny maxx maxy)
+        [(gpt/point minx miny)
+         (gpt/point maxx miny)
+         (gpt/point maxx maxy)
+         (gpt/point minx maxy)]))))
+
 (defn points->selrect [points]
   (when-let [rect (points->rect points)]
     (let [{:keys [x y width height]} rect]
@@ -168,3 +192,10 @@
        (>= (:y1 sr2) (:y1 sr1))
        (<= (:y2 sr2) (:y2 sr1))))
 
+(defn corners->selrect
+  [p1 p2]
+  (let [xp1 (:x p1)
+        xp2 (:x p2)
+        yp1 (:y p1)
+        yp2 (:y p2)]
+    (make-selrect (min xp1 xp2) (min yp1 yp2) (abs (- xp1 xp2)) (abs (- yp1 yp2)))))

common/src/app/common/geom/shapes/transforms.cljc

@@ -10,12 +10,14 @@
    [app.common.data.macros :as dm]
    [app.common.geom.matrix :as gmt]
    [app.common.geom.point :as gpt]
+   [app.common.geom.shapes.bool :as gshb]
    [app.common.geom.shapes.common :as gco]
    [app.common.geom.shapes.path :as gpa]
    [app.common.geom.shapes.rect :as gpr]
    [app.common.math :as mth]
-   [app.common.spec :as us]
-   [app.common.text :as txt]))
+   [app.common.pages.helpers :as cph]
+   [app.common.types.modifiers :as ctm]
+   [app.common.uuid :as uuid]))
 
 (def ^:dynamic *skip-adjust* false)
 
@@ -76,14 +78,6 @@
 
 ; ---- Geometric operations
 
-(defn- normalize-scale
-  "We normalize the scale so it's not too close to 0"
-  [scale]
-  (cond
-    (and (<  scale 0) (> scale -0.01)) -0.01
-    (and (>= scale 0) (< scale  0.01))  0.01
-    :else scale))
-
 (defn- calculate-skew-angle
   "Calculates the skew angle of the parallelogram given by the points"
   [[p1 _ p3 p4]]
@@ -99,6 +93,7 @@
 (defn- calculate-height
   "Calculates the height of a parallelogram given by the points"
   [[p1 _ _ p4]]
+
   (-> (gpt/to-vec p4 p1)
       (gpt/length)))
 
@@ -182,17 +177,6 @@
        (gmt/multiply (:transform-inverse shape (gmt/matrix)))
        (gmt/translate (gpt/negate center)))))
 
-(defn transform-point-center
-  "Transform a point around the shape center"
-  [point center matrix]
-  (if (and (some? point) (some? matrix) (some? center))
-    (gpt/transform
-     point
-     (gmt/multiply (gmt/translate-matrix center)
-                   matrix
-                   (gmt/translate-matrix (gpt/negate center))))
-    point))
-
 (defn transform-rect
   "Transform a rectangles and changes its attributes"
   [rect matrix]
@@ -205,55 +189,52 @@
   "Calculates a matrix that is a series of transformations we have to do to the transformed rectangle so that
   after applying them the end result is the `shape-path-temp`.
   This is compose of three transformations: skew, resize and rotation"
-  ([points-temp points-rec]
-   (calculate-adjust-matrix points-temp points-rec false false))
+  [points-temp points-rec flip-x flip-y]
+  (let [center (gco/center-bounds points-temp)
 
-  ([points-temp points-rec flip-x flip-y]
-   (let [center (gco/center-points points-temp)
+        stretch-matrix (gmt/matrix)
 
-         stretch-matrix (gmt/matrix)
+        skew-angle (calculate-skew-angle points-temp)
 
-         skew-angle (calculate-skew-angle points-temp)
+        ;; When one of the axis is flipped we have to reverse the skew
+        ;; skew-angle (if (neg? (* (:x resize-vector) (:y resize-vector))) (- skew-angle) skew-angle )
+        skew-angle (if (and (or flip-x flip-y)
+                            (not (and flip-x flip-y))) (- skew-angle) skew-angle )
+        skew-angle (if (mth/nan? skew-angle) 0 skew-angle)
 
-         ;; When one of the axis is flipped we have to reverse the skew
-         ;; skew-angle (if (neg? (* (:x resize-vector) (:y resize-vector))) (- skew-angle) skew-angle )
-         skew-angle (if (and (or flip-x flip-y)
-                             (not (and flip-x flip-y))) (- skew-angle) skew-angle )
-         skew-angle (if (mth/nan? skew-angle) 0 skew-angle)
+        stretch-matrix (gmt/multiply stretch-matrix (gmt/skew-matrix skew-angle 0))
 
-         stretch-matrix (gmt/multiply stretch-matrix (gmt/skew-matrix skew-angle 0))
+        h1 (max 1 (calculate-height points-temp))
+        h2 (max 1 (calculate-height (gco/transform-points points-rec center stretch-matrix)))
+        h3 (if-not (mth/almost-zero? h2) (/ h1 h2) 1)
+        h3 (if (mth/nan? h3) 1 h3)
 
-         h1 (max 1 (calculate-height points-temp))
-         h2 (max 1 (calculate-height (gco/transform-points points-rec center stretch-matrix)))
-         h3 (if-not (mth/almost-zero? h2) (/ h1 h2) 1)
-         h3 (if (mth/nan? h3) 1 h3)
+        w1 (max 1 (calculate-width points-temp))
+        w2 (max 1 (calculate-width (gco/transform-points points-rec center stretch-matrix)))
+        w3 (if-not (mth/almost-zero? w2) (/ w1 w2) 1)
+        w3 (if (mth/nan? w3) 1 w3)
 
-         w1 (max 1 (calculate-width points-temp))
-         w2 (max 1 (calculate-width (gco/transform-points points-rec center stretch-matrix)))
-         w3 (if-not (mth/almost-zero? w2) (/ w1 w2) 1)
-         w3 (if (mth/nan? w3) 1 w3)
+        stretch-matrix (gmt/multiply stretch-matrix (gmt/scale-matrix (gpt/point w3 h3)))
 
-         stretch-matrix (gmt/multiply stretch-matrix (gmt/scale-matrix (gpt/point w3 h3)))
+        rotation-angle (calculate-rotation
+                        center
+                        (gco/transform-points points-rec (gco/center-points points-rec) stretch-matrix)
+                        points-temp
+                        flip-x
+                        flip-y)
 
-         rotation-angle (calculate-rotation
-                         center
-                         (gco/transform-points points-rec (gco/center-points points-rec) stretch-matrix)
-                         points-temp
-                         flip-x
-                         flip-y)
+        stretch-matrix (gmt/multiply (gmt/rotate-matrix rotation-angle) stretch-matrix)
 
-         stretch-matrix (gmt/multiply (gmt/rotate-matrix rotation-angle) stretch-matrix)
-
-         ;; This is the inverse to be able to remove the transformation
-         stretch-matrix-inverse
-         (gmt/multiply (gmt/scale-matrix (gpt/point (/ 1 w3) (/ 1 h3)))
-                       (gmt/skew-matrix (- skew-angle) 0)
-                       (gmt/rotate-matrix (- rotation-angle)))]
-     [stretch-matrix stretch-matrix-inverse rotation-angle])))
+        ;; This is the inverse to be able to remove the transformation
+        stretch-matrix-inverse
+        (gmt/multiply (gmt/scale-matrix (gpt/point (/ 1 w3) (/ 1 h3)))
+                      (gmt/skew-matrix (- skew-angle) 0)
+                      (gmt/rotate-matrix (- rotation-angle)))]
+    [stretch-matrix stretch-matrix-inverse rotation-angle]))
 
 (defn- adjust-rotated-transform
   [{:keys [transform transform-inverse flip-x flip-y]} points]
-  (let [center          (gco/center-points points)
+  (let [center          (gco/center-bounds points)
 
         points-temp     (cond-> points
                           (some? transform-inverse)
@@ -273,13 +254,59 @@
      (if transform (gmt/multiply transform matrix) matrix)
      (if transform-inverse (gmt/multiply matrix-inverse transform-inverse) matrix-inverse)]))
 
-(defn apply-transform
+(defn- adjust-shape-flips
+  "After some tranformations the flip-x/flip-y flags can change we need
+  to check this before adjusting the selrect"
+  [shape points]
+
+  (let [points' (:points shape)
+
+        xv1 (gpt/to-vec (nth points' 0) (nth points' 1))
+        xv2 (gpt/to-vec (nth points 0) (nth points 1))
+        dot-x (gpt/dot xv1 xv2)
+
+        yv1 (gpt/to-vec (nth points' 0) (nth points' 3))
+        yv2 (gpt/to-vec (nth points 0) (nth points 3))
+        dot-y (gpt/dot yv1 yv2)]
+
+    (cond-> shape
+      (neg? dot-x)
+      (-> (update :flip-x not)
+          (update :rotation -))
+
+      (neg? dot-y)
+      (-> (update :flip-y not)
+          (update :rotation -)))))
+
+(defn- apply-transform-move
+  "Given a new set of points transformed, set up the rectangle so it keeps
+  its properties. We adjust de x,y,width,height and create a custom transform"
+  [shape transform-mtx]
+  (let [bool?   (= (:type shape) :bool)
+        path?   (= (:type shape) :path)
+        points  (gco/transform-points (:points shape) transform-mtx)
+        selrect (gco/transform-selrect (:selrect shape) transform-mtx)]
+    (-> shape
+        (cond-> bool?
+          (update :bool-content gpa/transform-content transform-mtx))
+        (cond-> path?
+          (update :content gpa/transform-content transform-mtx))
+        (cond-> (not path?)
+          (assoc :x (:x selrect)
+                 :y (:y selrect)
+                 :width (:width selrect)
+                 :height (:height selrect)))
+        (assoc :selrect selrect)
+        (assoc :points points))))
+
+(defn- apply-transform-generic
   "Given a new set of points transformed, set up the rectangle so it keeps
   its properties. We adjust de x,y,width,height and create a custom transform"
   [shape transform-mtx]
 
   (let [points'  (:points shape)
         points   (gco/transform-points points' transform-mtx)
+        shape    (-> shape (adjust-shape-flips points))
         bool?    (= (:type shape) :bool)
         path?    (= (:type shape) :path)
 
@@ -289,14 +316,16 @@
         base-rotation  (or (:rotation shape) 0)
         modif-rotation (or (get-in shape [:modifiers :rotation]) 0)
         rotation       (mod (+ base-rotation modif-rotation) 360)]
-
     (-> shape
         (cond-> bool?
           (update :bool-content gpa/transform-content transform-mtx))
         (cond-> path?
           (update :content gpa/transform-content transform-mtx))
         (cond-> (not path?)
-          (-> (merge (select-keys selrect [:x :y :width :height]))))
+          (assoc :x (:x selrect)
+                 :y (:y selrect)
+                 :width (:width selrect)
+                 :height (:height selrect)))
         (cond-> transform
           (-> (assoc :transform transform)
               (assoc :transform-inverse transform-inverse)))
@@ -304,10 +333,19 @@
           (dissoc :transform :transform-inverse))
         (cond-> (some? selrect)
           (assoc :selrect selrect))
+
         (cond-> (d/not-empty? points)
           (assoc :points points))
         (assoc :rotation rotation))))
 
+(defn- apply-transform
+  "Given a new set of points transformed, set up the rectangle so it keeps
+  its properties. We adjust de x,y,width,height and create a custom transform"
+  [shape transform-mtx]
+  (if (gmt/move? transform-mtx)
+    (apply-transform-move shape transform-mtx)
+    (apply-transform-generic shape transform-mtx)))
+
 (defn- update-group-viewbox
   "Updates the viewbox for groups imported from SVG's"
   [{:keys [selrect svg-viewbox] :as group} new-selrect]
@@ -332,6 +370,9 @@
         ;; Points for every shape inside the group
         points (->> children (mapcat :points))
 
+        ;; Fixed problem with empty groups. Should not happen (but it does)
+        points (if (empty? points) (:points group) points)
+
         ;; Invert to get the points minus the transforms applied to the group
         base-points (gco/transform-points points shape-center (:transform-inverse group (gmt/matrix)))
 
@@ -368,284 +409,74 @@
         (assoc :flip-x  (-> mask :flip-x))
         (assoc :flip-y  (-> mask :flip-y)))))
 
-;; --- Modifiers
+(defn update-bool-selrect
+  "Calculates the selrect+points for the boolean shape"
+  [shape children objects]
 
-;; The `modifiers` structure contains a list of transformations to
-;; do make to a shape, in this order:
-;;
-;; - resize-origin (gpt/point) + resize-vector (gpt/point)
-;;   apply a scale vector to all points of the shapes, starting
-;;   from the origin point.
-;;
-;; - resize-origin-2 + resize-vector-2
-;;   same as the previous one, for cases in that we need to make
-;;   two vectors from different origin points.
-;;
-;; - displacement (gmt/matrix)
-;;   apply a translation matrix to the shape
-;;
-;; - rotation (gmt/matrix)
-;;   apply a rotation matrix to the shape
-;;
-;; - resize-transform (gmt/matrix) + resize-transform-inverse (gmt/matrix)
-;;   a copy of the rotation matrix currently applied to the shape;
-;;   this is needed temporarily to apply the resize vectors.
-;;
-;; - resize-scale-text (bool)
-;;   tells if the resize vectors must be applied to text shapes
-;;   or not.
+  (let [bool-content     (gshb/calc-bool-content shape objects)
+        shape            (assoc shape :bool-content bool-content)
+        [points selrect] (gpa/content->points+selrect shape bool-content)]
 
-(defn empty-modifiers? [modifiers]
-  (empty? (dissoc modifiers :ignore-geometry?)))
-
-(defn resize-modifiers
-  [shape attr value]
-  (us/assert map? shape)
-  (us/assert #{:width :height} attr)
-  (us/assert number? value)
-  (let [{:keys [proportion proportion-lock]} shape
-        size (select-keys (:selrect shape) [:width :height])
-        new-size (if-not proportion-lock
-                   (assoc size attr value)
-                   (if (= attr :width)
-                     (-> size
-                         (assoc :width value)
-                         (assoc :height (/ value proportion)))
-                     (-> size
-                         (assoc :height value)
-                         (assoc :width (* value proportion)))))
-        width (:width new-size)
-        height (:height new-size)
-
-        shape-transform (:transform shape)
-        shape-transform-inv (:transform-inverse shape)
-        shape-center (gco/center-shape shape)
-        {sr-width :width sr-height :height} (:selrect shape)
-
-        origin (cond-> (gpt/point (:selrect shape))
-                 (some? shape-transform)
-                 (transform-point-center shape-center shape-transform))
-
-        scalev (gpt/divide (gpt/point width height)
-                           (gpt/point sr-width sr-height))]
-    {:resize-vector scalev
-     :resize-origin origin
-     :resize-transform shape-transform
-     :resize-transform-inverse shape-transform-inv}))
-
-(defn change-orientation-modifiers
-  [shape orientation]
-  (us/assert map? shape)
-  (us/verify #{:horiz :vert} orientation)
-  (let [width (:width shape)
-        height (:height shape)
-        new-width (if (= orientation :horiz) (max width height) (min width height))
-        new-height (if (= orientation :horiz) (min width height) (max width height))
-
-        shape-transform (:transform shape)
-        shape-transform-inv (:transform-inverse shape)
-        shape-center (gco/center-shape shape)
-        {sr-width :width sr-height :height} (:selrect shape)
-
-        origin (cond-> (gpt/point (:selrect shape))
-                 (some? shape-transform)
-                 (transform-point-center shape-center shape-transform))
-
-        scalev (gpt/divide (gpt/point new-width new-height)
-                           (gpt/point sr-width sr-height))]
-    {:resize-vector scalev
-     :resize-origin origin
-     :resize-transform shape-transform
-     :resize-transform-inverse shape-transform-inv}))
-
-(defn rotation-modifiers
-  [shape center angle]
-  (let [displacement (let [shape-center (gco/center-shape shape)]
-                       (-> (gmt/matrix)
-                           (gmt/rotate angle center)
-                           (gmt/rotate (- angle) shape-center)))]
-    {:rotation angle
-     :displacement displacement}))
-
-(defn merge-modifiers
-  [objects modifiers]
-
-  (let [set-modifier
-        (fn [objects [id modifiers]]
-          (-> objects
-              (d/update-when id merge modifiers)))]
-    (->> modifiers
-         (reduce set-modifier objects))))
-
-(defn modifiers->transform
-  ([modifiers]
-   (modifiers->transform nil modifiers))
-
-  ([center modifiers]
-   (let [displacement (:displacement modifiers)
-         displacement-after (:displacement-after modifiers)
-         resize-v1 (:resize-vector modifiers)
-         resize-v2 (:resize-vector-2 modifiers)
-         origin-1 (:resize-origin modifiers (gpt/point))
-         origin-2 (:resize-origin-2 modifiers (gpt/point))
-
-         ;; Normalize x/y vector coordinates because scale by 0 is infinite
-         resize-1 (when (some? resize-v1)
-                    (gpt/point (normalize-scale (:x resize-v1))
-                               (normalize-scale (:y resize-v1))))
-
-         resize-2 (when (some? resize-v2)
-                    (gpt/point (normalize-scale (:x resize-v2))
-                               (normalize-scale (:y resize-v2))))
-
-
-         resize-transform (:resize-transform modifiers)
-         resize-transform-inverse (:resize-transform-inverse modifiers)
-
-         rt-modif (:rotation modifiers)]
-
-     (cond-> (gmt/matrix)
-       (some? displacement-after)
-       (gmt/multiply displacement-after)
-
-       (some? resize-1)
-       (-> (gmt/translate origin-1)
-           (cond-> (some? resize-transform)
-             (gmt/multiply resize-transform))
-           (gmt/scale resize-1)
-           (cond-> (some? resize-transform-inverse)
-             (gmt/multiply resize-transform-inverse))
-           (gmt/translate (gpt/negate origin-1)))
-
-       (some? resize-2)
-       (-> (gmt/translate origin-2)
-           (cond-> (some? resize-transform)
-             (gmt/multiply resize-transform))
-           (gmt/scale resize-2)
-           (cond-> (some? resize-transform-inverse)
-             (gmt/multiply resize-transform-inverse))
-           (gmt/translate (gpt/negate origin-2)))
-
-       (some? displacement)
-       (gmt/multiply displacement)
-
-       (some? rt-modif)
-       (-> (gmt/translate center)
-           (gmt/multiply (gmt/rotate-matrix rt-modif))
-           (gmt/translate (gpt/negate center)))))))
-
-(defn- set-flip [shape modifiers]
-  (let [rv1x (or (get-in modifiers [:resize-vector :x]) 1)
-        rv1y (or (get-in modifiers [:resize-vector :y]) 1)
-        rv2x (or (get-in modifiers [:resize-vector-2 :x]) 1)
-        rv2y (or (get-in modifiers [:resize-vector-2 :y]) 1)]
-    (cond-> shape
-      (or (neg? rv1x) (neg? rv2x))
-      (-> (update :flip-x not)
-          (update :rotation -))
-      (or (neg? rv1y) (neg? rv2y))
-      (-> (update :flip-y not)
-          (update :rotation -)))))
-
-(defn- apply-displacement [shape]
-  (let [modifiers (:modifiers shape)]
-    (if (contains? modifiers :displacement)
-      (let [mov-vec (-> (gpt/point 0 0)
-                        (gpt/transform (:displacement modifiers)))
-            shape (move shape mov-vec)
-            modifiers (dissoc modifiers :displacement)]
-        (-> shape
-            (assoc :modifiers modifiers)
-            (cond-> (empty-modifiers? modifiers)
-              (dissoc :modifiers))))
-      shape)))
-
-(defn- apply-text-resize
-  [shape modifiers]
-  (if (and (= (:type shape) :text)
-           (:resize-scale-text modifiers))
-    (let [merge-attrs (fn [attrs]
-                        (let [font-size (-> (get attrs :font-size 14)
-                                            (d/parse-double)
-                                            (* (get-in modifiers [:resize-vector :x] 1))
-                                            (* (get-in modifiers [:resize-vector-2 :x] 1))
-                                            (str))]
-                          (d/txt-merge attrs {:font-size font-size})))]
-      (update shape :content #(txt/transform-nodes
-                                txt/is-text-node?
-                                merge-attrs
-                                %)))
-    shape))
-
-(defn apply-modifiers
-  [shape modifiers]
-  (let [center (gco/center-shape shape)
-        transform (modifiers->transform center modifiers)]
-    (apply-transform shape transform)))
+    (if (and (some? selrect) (d/not-empty? points))
+      (-> shape
+          (assoc :selrect selrect)
+          (assoc :points points))
+      (update-group-selrect shape children))))
 
 (defn transform-shape
-  [shape]
-  (let [modifiers (:modifiers shape)]
-    (cond
-      (nil? modifiers)
-      shape
+  ([shape]
+   (let [modifiers (:modifiers shape)]
+     (-> shape
+         (dissoc :modifiers)
+         (transform-shape modifiers))))
 
-      (empty-modifiers? modifiers)
-      (dissoc shape :modifiers)
+  ([shape modifiers]
+   (letfn [(apply-modifiers
+             [shape modifiers]
+             (if (ctm/empty? modifiers)
+               shape
+               (let [transform (ctm/modifiers->transform modifiers)]
+                 (cond-> shape
+                   (and (some? transform) (not= uuid/zero (:id shape))) ;; Never transform the root frame
+                   (apply-transform transform)
 
-      :else
-      (let [shape     (apply-displacement shape)
-            modifiers (:modifiers shape)]
-        (cond-> shape
-          (not (empty-modifiers? modifiers))
-          (-> (set-flip modifiers)
-              (apply-modifiers modifiers)
-              (apply-text-resize modifiers))
+                   (ctm/has-structure? modifiers)
+                   (ctm/apply-structure-modifiers modifiers)))))]
 
-          :always
-          (dissoc :modifiers))))))
+     (cond-> shape
+       (and (some? modifiers) (not (ctm/empty? modifiers)))
+       (apply-modifiers modifiers)))))
+
+(defn apply-objects-modifiers
+  [objects modifiers]
+
+  (loop [objects objects
+         entry (first modifiers)
+         modifiers (rest modifiers)]
+
+    (if (nil? entry)
+      objects
+      (let [[id modifier] entry]
+        (recur (d/update-when objects id transform-shape (:modifiers modifier))
+               (first modifiers)
+               (rest modifiers))))))
 
 (defn transform-bounds
-  [points center {:keys [displacement displacement-after resize-transform-inverse resize-vector resize-origin resize-vector-2 resize-origin-2]}]
-  ;; FIXME: Improve Performance
-  (let [resize-transform-inverse (or resize-transform-inverse (gmt/matrix))
+  ([points modifiers]
+   (transform-bounds points nil modifiers))
 
-        displacement
-        (when (some? displacement)
-          (gmt/multiply resize-transform-inverse displacement))
-
-        resize-origin
-        (when (some? resize-origin)
-          (transform-point-center resize-origin center resize-transform-inverse))
-
-        resize-origin-2
-        (when (some? resize-origin-2)
-          (transform-point-center resize-origin-2 center resize-transform-inverse))
-        ]
-
-    (if (and (nil? displacement) (nil? resize-origin) (nil? resize-origin-2) (nil? displacement-after))
-      points
-
-      (cond-> points
-        (some? displacement)
-        (gco/transform-points displacement)
-
-        (some? resize-origin)
-        (gco/transform-points resize-origin (gmt/scale-matrix resize-vector))
-
-        (some? resize-origin-2)
-        (gco/transform-points resize-origin-2 (gmt/scale-matrix resize-vector-2))
-
-        (some? displacement-after)
-        (gco/transform-points displacement-after)))))
+  ([points center modifiers]
+   (let [transform (ctm/modifiers->transform modifiers)]
+    (cond-> points
+      (some? transform)
+      (gco/transform-points center transform)))))
 
 (defn transform-selrect
   [selrect modifiers]
-  (let [center (gco/center-selrect selrect)]
-    (-> selrect
-        (gpr/rect->points)
-        (transform-bounds center modifiers)
-        (gpr/points->selrect))))
+  (-> selrect
+      (gpr/rect->points)
+      (transform-bounds modifiers)
+      (gpr/points->selrect)))
 
 (defn transform-selrect-matrix
   [selrect mtx]
@@ -662,17 +493,62 @@
        (map (comp gpr/points->selrect :points transform-shape))
        (gpr/join-selrects)))
 
+(declare apply-group-modifiers)
+
+(defn apply-children-modifiers
+  [objects modif-tree parent-modifiers children propagate?]
+  (->> children
+       (map (fn [child]
+              (let [modifiers (cond-> (get-in modif-tree [(:id child) :modifiers])
+                                propagate? (ctm/add-modifiers parent-modifiers))
+                    child     (transform-shape child modifiers)
+                    parent?   (cph/group-like-shape? child)
+
+                    modif-tree
+                    (cond-> modif-tree
+                      propagate?
+                      (assoc-in [(:id child) :modifiers] modifiers))]
+
+                (cond-> child
+                  parent?
+                  (apply-group-modifiers objects modif-tree propagate?)))))))
+
 (defn apply-group-modifiers
   "Apply the modifiers to the group children to calculate its selection rect"
-  [group objects modif-tree]
+  ([group objects modif-tree]
+   (apply-group-modifiers group objects modif-tree true))
 
-  (let [children
-        (->> (:shapes group)
-             (map (d/getf objects))
-             (map (fn [shape]
-                    (let [modifiers (get modif-tree (:id shape))
-                          shape (-> shape (merge modifiers) transform-shape)]
-                      (if (= :group (:type shape))
-                        (apply-group-modifiers shape objects modif-tree)
-                        shape)))))]
-    (update-group-selrect group children)))
+  ([group objects modif-tree propagate?]
+   (let [modifiers (get-in modif-tree [(:id group) :modifiers])
+         children
+         (as-> (:shapes group) $
+           (map (d/getf objects) $)
+           (apply-children-modifiers objects modif-tree modifiers $ propagate?))]
+     (cond
+       (cph/mask-shape? group)
+       (update-mask-selrect group children)
+
+       (cph/bool-shape? group)
+       (transform-shape group modifiers)
+
+       (cph/group-shape? group)
+       (update-group-selrect group children)
+
+       :else
+       group))))
+
+(defn parent-coords-rect
+  [child parent]
+  (-> child
+      :points
+      (gco/transform-points (:transform-inverse parent))
+      (gpr/points->rect)))
+
+(defn parent-coords-points
+  [child parent]
+  (-> child
+      :points
+      (gco/transform-points (:transform-inverse parent))
+      (gpr/points->rect)
+      (gpr/rect->points)
+      (gco/transform-points (:transform parent))))

common/src/app/common/math.cljc

@@ -156,7 +156,7 @@
     (if (> num to) to num)))
 
 (defn almost-zero? [num]
-  (< (abs (double num)) 1e-5))
+  (< (abs (double num)) 1e-4))
 
 (defonce float-equal-precision 0.001)
 
@@ -174,3 +174,8 @@
 (defn max-abs
   [a b]
   (max (abs a) (abs b)))
+
+(defn sign
+  "Get the sign (+1 / -1) for the number"
+  [n]
+  (if (neg? n) -1 1))

common/src/app/common/pages/changes.cljc

@@ -11,7 +11,6 @@
    [app.common.data.macros :as dm]
    [app.common.exceptions :as ex]
    [app.common.geom.shapes :as gsh]
-   [app.common.geom.shapes.bool :as gshb]
    [app.common.math :as mth]
    [app.common.pages.common :refer [component-sync-attrs]]
    [app.common.pages.helpers :as cph]
@@ -170,7 +169,7 @@
                 group
 
                 (= :bool (:type group))
-                (gshb/update-bool-selrect group children objects)
+                (gsh/update-bool-selrect group children objects)
 
                 (:masked-group? group)
                 (set-mask-selrect group children)

common/src/app/common/pages/changes_builder.cljc

@@ -12,8 +12,6 @@
    [app.common.geom.matrix :as gmt]
    [app.common.geom.point :as gpt]
    [app.common.geom.shapes :as gsh]
-   [app.common.geom.shapes.bool :as gshb]
-   [app.common.geom.shapes.rect :as gshr]
    [app.common.math :as mth]
    [app.common.pages :as cp]
    [app.common.pages.helpers :as cph]
@@ -419,7 +417,7 @@
                           (every? #(apply gpt/close? %) (d/zip old-val new-val))
 
                           (= attr :selrect)
-                          (gshr/close-selrect? old-val new-val)
+                          (gsh/close-selrect? old-val new-val)
 
                           :else
                           (= old-val new-val))]
@@ -438,7 +436,7 @@
                                  nil               ;; so it does not need resize
 
                                  (= (:type parent) :bool)
-                                 (gshb/update-bool-selrect parent children objects)
+                                 (gsh/update-bool-selrect parent children objects)
 
                                  (= (:type parent) :group)
                                  (if (:masked-group? parent)

common/src/app/common/pages/common.cljc

@@ -71,7 +71,28 @@
    :constraints-h         :constraints-group
    :constraints-v         :constraints-group
    :fixed-scroll          :constraints-group
-   :exports               :exports-group})
+   :exports               :exports-group
+
+   :layout                :layout-container
+   :layout-dir            :layout-container
+   :layout-gap            :layout-container
+   :layout-type           :layout-container
+   :layout-wrap-type      :layout-container
+   :layout-padding-type   :layout-container
+   :layout-padding        :layout-container
+   :layout-h-orientation  :layout-container
+   :layout-v-orientation  :layout-container
+
+   :layout-item-margin         :layout-item
+   :layout-item-margin-type    :layout-item
+   :layout-item-h-sizing       :layout-item
+   :layout-item-v-sizing       :layout-item
+   :layout-item-max-h          :layout-item
+   :layout-item-min-h          :layout-item
+   :layout-item-max-w          :layout-item
+   :layout-item-min-w          :layout-item
+   :layout-item-align-self     :layout-item
+   })
 
 ;; Attributes that may directly be edited by the user with forms
 (def editable-attrs
@@ -111,31 +132,62 @@
             :stroke-cap-start
             :stroke-cap-end
 
-            :exports}
+            :exports
 
-  :group #{:proportion-lock
-           :width :height
-           :x :y
-           :rotation
-           :selrect
-           :points
+            :layout
+            :layout-flex-dir
+            :layout-gap
+            :layout-gap-type
+            :layout-align-items
+            :layout-justify-content
+            :layout-align-content
+            :layout-wrap-type
+            :layout-padding-type
+            :layout-padding
 
-           :constraints-h
-           :constraints-v
-           :fixed-scroll
-           :parent-id
-           :frame-id
+            :layout-item-margin
+            :layout-item-margin-type
+            :layout-item-h-sizing
+            :layout-item-v-sizing
+            :layout-item-max-h
+            :layout-item-min-h
+            :layout-item-max-w
+            :layout-item-min-w
+            :layout-item-align-self}
 
-           :opacity
-           :blend-mode
-           :blocked
-           :hidden
+   :group #{:proportion-lock
+            :width :height
+            :x :y
+            :rotation
+            :selrect
+            :points
 
-           :shadow
+            :constraints-h
+            :constraints-v
+            :fixed-scroll
+            :parent-id
+            :frame-id
 
-           :blur
+            :opacity
+            :blend-mode
+            :blocked
+            :hidden
 
-           :exports}
+            :shadow
+
+            :blur
+
+            :exports
+
+            :layout-item-margin
+            :layout-item-margin-type
+            :layout-item-h-sizing
+            :layout-item-v-sizing
+            :layout-item-max-h
+            :layout-item-min-h
+            :layout-item-max-w
+            :layout-item-min-w
+            :layout-item-align-self}
 
    :rect #{:proportion-lock
            :width :height
@@ -180,7 +232,17 @@
 
            :blur
 
-           :exports}
+           :exports
+
+           :layout-item-margin
+           :layout-item-margin-type
+           :layout-item-h-sizing
+           :layout-item-v-sizing
+           :layout-item-max-h
+           :layout-item-min-h
+           :layout-item-max-w
+           :layout-item-min-w
+           :layout-item-align-self}
 
    :circle #{:proportion-lock
              :width :height
@@ -223,118 +285,239 @@
 
              :blur
 
-             :exports}
+             :exports
 
-  :path #{:proportion-lock
-          :width :height
-          :x :y
-          :rotation
-          :selrect
-          :points
+             :layout-item-margin
+             :layout-item-margin-type
+             :layout-item-h-sizing
+             :layout-item-v-sizing
+             :layout-item-max-h
+             :layout-item-min-h
+             :layout-item-max-w
+             :layout-item-min-w
+             :layout-item-align-self}
 
-          :constraints-h
-          :constraints-v
-          :fixed-scroll
-          :parent-id
-          :frame-id
+   :path #{:proportion-lock
+           :width :height
+           :x :y
+           :rotation
+           :selrect
+           :points
 
-          :opacity
-          :blend-mode
-          :blocked
-          :hidden
+           :constraints-h
+           :constraints-v
+           :fixed-scroll
+           :parent-id
+           :frame-id
 
-          :fills
-          :fill-color
-          :fill-opacity
-          :fill-color-ref-id
-          :fill-color-ref-file
-          :fill-color-gradient
+           :opacity
+           :blend-mode
+           :blocked
+           :hidden
 
-          :strokes
-          :stroke-style
-          :stroke-alignment
-          :stroke-width
-          :stroke-color
-          :stroke-color-ref-id
-          :stroke-color-ref-file
-          :stroke-opacity
-          :stroke-color-gradient
-          :stroke-cap-start
-          :stroke-cap-end
+           :fills
+           :fill-color
+           :fill-opacity
+           :fill-color-ref-id
+           :fill-color-ref-file
+           :fill-color-gradient
 
-          :shadow
+           :strokes
+           :stroke-style
+           :stroke-alignment
+           :stroke-width
+           :stroke-color
+           :stroke-color-ref-id
+           :stroke-color-ref-file
+           :stroke-opacity
+           :stroke-color-gradient
+           :stroke-cap-start
+           :stroke-cap-end
 
-          :blur
+           :shadow
 
-          :exports}
+           :blur
 
-  :text #{:proportion-lock
-          :width :height
-          :x :y
-          :rotation
-          :selrect
-          :points
+           :exports
 
-          :constraints-h
-          :constraints-v
-          :fixed-scroll
-          :parent-id
-          :frame-id
+           :layout-item-margin
+           :layout-item-margin-type
+           :layout-item-h-sizing
+           :layout-item-v-sizing
+           :layout-item-max-h
+           :layout-item-min-h
+           :layout-item-max-w
+           :layout-item-min-w
+           :layout-item-align-self}
 
-          :opacity
-          :blend-mode
-          :blocked
-          :hidden
+   :text #{:proportion-lock
+           :width :height
+           :x :y
+           :rotation
+           :selrect
+           :points
 
-          :fill-color
-          :fill-opacity
-          :fill-color-ref-id
-          :fill-color-ref-file
-          :fill-color-gradient
+           :constraints-h
+           :constraints-v
+           :fixed-scroll
+           :parent-id
+           :frame-id
 
-          :stroke-style
-          :stroke-alignment
-          :stroke-width
-          :stroke-color
-          :stroke-color-ref-id
-          :stroke-color-ref-file
-          :stroke-opacity
-          :stroke-color-gradient
-          :stroke-cap-start
-          :stroke-cap-end
+           :opacity
+           :blend-mode
+           :blocked
+           :hidden
 
-          :shadow
+           :fill-color
+           :fill-opacity
+           :fill-color-ref-id
+           :fill-color-ref-file
+           :fill-color-gradient
 
-          :blur
+           :stroke-style
+           :stroke-alignment
+           :stroke-width
+           :stroke-color
+           :stroke-color-ref-id
+           :stroke-color-ref-file
+           :stroke-opacity
+           :stroke-color-gradient
+           :stroke-cap-start
+           :stroke-cap-end
 
-          :typography-ref-id
-          :typography-ref-file
+           :shadow
 
-          :font-id
-          :font-family
-          :font-variant-id
-          :font-size
-          :font-weight
-          :font-style
+           :blur
 
-          :text-align
+           :typography-ref-id
+           :typography-ref-file
 
-          :text-direction
+           :font-id
+           :font-family
+           :font-variant-id
+           :font-size
+           :font-weight
+           :font-style
 
-          :line-height
-          :letter-spacing
+           :text-align
 
-          :vertical-align
+           :text-direction
 
-          :text-decoration
+           :line-height
+           :letter-spacing
 
-          :text-transform
+           :vertical-align
 
-          :grow-type
+           :text-decoration
 
-          :exports}
+           :text-transform
 
-  :image #{:proportion-lock
+           :grow-type
+
+           :exports
+
+           :layout-item-margin
+           :layout-item-margin-type
+           :layout-item-h-sizing
+           :layout-item-v-sizing
+           :layout-item-max-h
+           :layout-item-min-h
+           :layout-item-max-w
+           :layout-item-min-w
+           :layout-item-align-self}
+
+   :image #{:proportion-lock
+            :width :height
+            :x :y
+            :rotation
+            :rx :ry
+            :r1 :r2 :r3 :r4
+            :selrect
+            :points
+
+            :constraints-h
+            :constraints-v
+            :fixed-scroll
+            :parent-id
+            :frame-id
+
+            :opacity
+            :blend-mode
+            :blocked
+            :hidden
+
+            :shadow
+
+            :blur
+
+            :exports
+
+            :layout-item-margin
+            :layout-item-margin-type
+            :layout-item-h-sizing
+            :layout-item-v-sizing
+            :layout-item-max-h
+            :layout-item-min-h
+            :layout-item-max-w
+            :layout-item-min-w
+            :layout-item-align-self}
+
+   :svg-raw #{:proportion-lock
+              :width :height
+              :x :y
+              :rotation
+              :rx :ry
+              :r1 :r2 :r3 :r4
+              :selrect
+              :points
+
+              :constraints-h
+              :constraints-v
+              :fixed-scroll
+              :parent-id
+              :frame-id
+
+              :opacity
+              :blend-mode
+              :blocked
+              :hidden
+
+              :fills
+              :fill-color
+              :fill-opacity
+              :fill-color-ref-id
+              :fill-color-ref-file
+              :fill-color-gradient
+
+              :strokes
+              :stroke-style
+              :stroke-alignment
+              :stroke-width
+              :stroke-color
+              :stroke-color-ref-id
+              :stroke-color-ref-file
+              :stroke-opacity
+              :stroke-color-gradient
+              :stroke-cap-start
+              :stroke-cap-end
+
+              :shadow
+
+              :blur
+
+              :exports
+
+              :layout-item-margin
+              :layout-item-margin-type
+              :layout-item-h-sizing
+              :layout-item-v-sizing
+              :layout-item-max-h
+              :layout-item-min-h
+              :layout-item-max-w
+              :layout-item-min-w
+              :layout-item-align-self}
+
+   :bool #{:proportion-lock
            :width :height
            :x :y
            :rotation
@@ -354,97 +537,36 @@
            :blocked
            :hidden
 
+           :fill-color
+           :fill-opacity
+           :fill-color-ref-id
+           :fill-color-ref-file
+           :fill-color-gradient
+
+           :stroke-style
+           :stroke-alignment
+           :stroke-width
+           :stroke-color
+           :stroke-color-ref-id
+           :stroke-color-ref-file
+           :stroke-opacity
+           :stroke-color-gradient
+           :stroke-cap-start
+           :stroke-cap-end
+
            :shadow
 
            :blur
 
-           :exports}
+           :exports
 
-  :svg-raw #{:proportion-lock
-             :width :height
-             :x :y
-             :rotation
-             :rx :ry
-             :r1 :r2 :r3 :r4
-             :selrect
-             :points
-
-             :constraints-h
-             :constraints-v
-             :fixed-scroll
-             :parent-id
-             :frame-id
-
-             :opacity
-             :blend-mode
-             :blocked
-             :hidden
-
-             :fills
-             :fill-color
-             :fill-opacity
-             :fill-color-ref-id
-             :fill-color-ref-file
-             :fill-color-gradient
-
-             :strokes
-             :stroke-style
-             :stroke-alignment
-             :stroke-width
-             :stroke-color
-             :stroke-color-ref-id
-             :stroke-color-ref-file
-             :stroke-opacity
-             :stroke-color-gradient
-             :stroke-cap-start
-             :stroke-cap-end
-
-             :shadow
-
-             :blur
-
-             :exports}
-
-  :bool #{:proportion-lock
-          :width :height
-          :x :y
-          :rotation
-          :rx :ry
-          :r1 :r2 :r3 :r4
-          :selrect
-          :points
-
-          :constraints-h
-          :constraints-v
-          :fixed-scroll
-          :parent-id
-          :frame-id
-
-          :opacity
-          :blend-mode
-          :blocked
-          :hidden
-
-          :fill-color
-          :fill-opacity
-          :fill-color-ref-id
-          :fill-color-ref-file
-          :fill-color-gradient
-
-          :stroke-style
-          :stroke-alignment
-          :stroke-width
-          :stroke-color
-          :stroke-color-ref-id
-          :stroke-color-ref-file
-          :stroke-opacity
-          :stroke-color-gradient
-          :stroke-cap-start
-          :stroke-cap-end
-
-          :shadow
-
-          :blur
-
-          :exports}})
+           :layout-item-margin
+           :layout-item-margin-type
+           :layout-item-h-sizing
+           :layout-item-v-sizing
+           :layout-item-max-h
+           :layout-item-min-h
+           :layout-item-max-w
+           :layout-item-min-w
+           :layout-item-align-self}})
 

common/src/app/common/pages/helpers.cljc

@@ -28,17 +28,27 @@
        (= frame-id uuid/zero)))
 
 (defn frame-shape?
-  [{:keys [type]}]
-  (= type :frame))
+  ([objects id]
+   (frame-shape? (get objects id)))
+  ([{:keys [type]}]
+   (= type :frame)))
 
 (defn group-shape?
   [{:keys [type]}]
   (= type :group))
 
+(defn mask-shape?
+  [{:keys [type masked-group?]}]
+  (and (= type :group) masked-group?))
+
 (defn bool-shape?
   [{:keys [type]}]
   (= type :bool))
 
+(defn group-like-shape?
+  [{:keys [type]}]
+  (or (= :group type) (= :bool type)))
+
 (defn text-shape?
   [{:keys [type]}]
   (= type :text))
@@ -63,9 +73,12 @@
 
 (defn get-children-ids
   [objects id]
-  (if-let [shapes (-> (get objects id) :shapes (some-> vec))]
-    (into shapes (mapcat #(get-children-ids objects %)) shapes)
-    []))
+  (letfn [(get-children-ids-rec
+            [id processed]
+            (when (not (contains? processed id))
+              (when-let [shapes (-> (get objects id) :shapes (some-> vec))]
+                (into shapes (mapcat #(get-children-ids-rec % (conj processed id))) shapes))))]
+    (get-children-ids-rec id #{})))
 
 (defn get-children
   [objects id]
@@ -456,7 +469,6 @@
 
 (defn selected-with-children
   [objects selected]
-
   (into selected
         (mapcat #(get-children-ids objects %))
         selected))

common/src/app/common/pages/migrations.cljc

@@ -102,13 +102,7 @@
               (fix-frames-selrects)
 
               (and (empty? (:points object)) (not= (:id object) uuid/zero))
-              (fix-empty-points)
-
-              ;; Setup an empty transformation to re-calculate selrects
-              ;; and points data
-              :always
-              (-> (assoc :modifiers {:displacement (gmt/matrix)})
-                  (gsh/transform-shape))))
+              (fix-empty-points)))
 
           (update-page [page]
             (update page :objects d/update-vals update-object))]

common/src/app/common/types/modifiers.cljc

@@ -0,0 +1,500 @@
+;; This Source Code Form is subject to the terms of the Mozilla Public
+;; License, v. 2.0. If a copy of the MPL was not distributed with this
+;; file, You can obtain one at http://mozilla.org/MPL/2.0/.
+;;
+;; Copyright (c) UXBOX Labs SL
+
+(ns app.common.types.modifiers
+  (:refer-clojure :exclude [empty empty?])
+  (:require
+   [app.common.data :as d]
+   [app.common.geom.matrix :as gmt]
+   [app.common.geom.point :as gpt]
+   [app.common.geom.shapes.common :as gco]
+   [app.common.math :as mth]
+   [app.common.pages.helpers :as cph]
+   [app.common.spec :as us]
+   [app.common.text :as txt]
+   #?(:cljs [cljs.core :as c]
+      :clj [clojure.core :as c])))
+
+;; --- Modifiers
+
+;; Moodifiers types
+;;  - geometry-parent: Geometry non-recursive
+;;     * move
+;;     * resize
+;;     * rotation
+;;  - geometry-child: Geometry recursive
+;;     * move
+;;     * resize
+;;     * rotation
+;;  - structure-parent: Structure non recursive
+;;     * add-children
+;;     * remove-children
+;;     * reflow
+;;  - structure-child: Structure recursive
+;;     * scale-content
+;;     * rotation
+;;     * change-properties
+
+;; Private aux functions
+
+(def conjv (fnil conj []))
+
+(defn- move-vec? [vector]
+  (or (not (mth/almost-zero? (:x vector)))
+      (not (mth/almost-zero? (:y vector)))))
+
+(defn- resize-vec? [vector]
+  (or (not (mth/almost-zero? (- (:x vector) 1)))
+      (not (mth/almost-zero? (- (:y vector) 1)))))
+
+
+(defn- mergeable-move?
+  [op1 op2]
+  (and (= :move (:type op1))
+       (= :move (:type op2))))
+
+(defn- mergeable-resize?
+  [op1 op2]
+  (and (= :resize (:type op1))
+       (= :resize (:type op2))
+
+       ;; Same transforms
+       (gmt/close? (or (:transform op1) (gmt/matrix)) (or (:transform op2) (gmt/matrix)))
+       (gmt/close? (or (:transform-inverse op1) (gmt/matrix)) (or (:transform-inverse op2) (gmt/matrix)))
+
+       ;; Same origin
+       (gpt/close? (:origin op1) (:origin op2))))
+
+(defn- merge-move
+  [op1 op2]
+  {:type :move
+   :vector (gpt/add (:vector op1) (:vector op2))})
+
+(defn- merge-resize
+  [op1 op2]
+  (let [vector (gpt/point (* (-> op1 :vector :x) (-> op2 :vector :x))
+                          (* (-> op1 :vector :y) (-> op2 :vector :y)))]
+    (assoc op1 :vector vector)))
+
+(defn- maybe-add-move
+  "Check the last operation to check if we can stack it over the last one"
+  [operations op]
+  (if (c/empty? operations)
+    [op]
+    (let [head (peek operations)]
+      (if (mergeable-move? head op)
+        (let [item (merge-move head op)]
+          (cond-> (pop operations)
+            (move-vec? (:vector item))
+            (conj item)))
+        (conj operations op)))))
+
+(defn- maybe-add-resize
+  "Check the last operation to check if we can stack it over the last one"
+  [operations op]
+
+  (if (c/empty? operations)
+    [op]
+    (let [head (peek operations)]
+      (if (mergeable-resize? head op)
+        (let [item (merge-resize head op)]
+          (cond-> (pop operations)
+            (resize-vec? (:vector item))
+            (conj item)))
+        (conj operations op)))))
+
+;; Public builder API
+
+(defn empty []
+  {})
+
+(defn move-parent
+  ([modifiers x y]
+   (move-parent modifiers (gpt/point x y)))
+
+  ([modifiers vector]
+   (cond-> modifiers
+     (move-vec? vector)
+     (update :geometry-parent conjv {:type :move :vector vector}))))
+
+(defn resize-parent
+  ([modifiers vector origin]
+   (cond-> modifiers
+     (resize-vec? vector)
+     (update :geometry-parent maybe-add-resize {:type :resize
+                                                :vector vector
+                                                :origin origin})))
+
+  ([modifiers vector origin transform transform-inverse]
+   (cond-> modifiers
+     (resize-vec? vector)
+     (update :geometry-parent maybe-add-resize {:type :resize
+                                                :vector vector
+                                                :origin origin
+                                                :transform transform
+                                                :transform-inverse transform-inverse}))))
+(defn move
+  ([modifiers x y]
+   (move modifiers (gpt/point x y)))
+
+  ([modifiers vector]
+   (cond-> modifiers
+     (move-vec? vector)
+     (update :geometry-child maybe-add-move {:type :move :vector vector}))))
+
+(defn resize
+  ([modifiers vector origin]
+   (cond-> modifiers
+     (resize-vec? vector)
+     (update :geometry-child maybe-add-resize {:type :resize
+                                               :vector vector
+                                               :origin origin})))
+
+  ([modifiers vector origin transform transform-inverse]
+   (cond-> modifiers
+     (resize-vec? vector)
+     (update :geometry-child maybe-add-resize {:type :resize
+                                               :vector vector
+                                               :origin origin
+                                               :transform transform
+                                               :transform-inverse transform-inverse}))))
+
+(defn rotation
+  [modifiers center angle]
+  (cond-> modifiers
+    (not (mth/close? angle 0))
+    (-> (update :structure-child conjv {:type :rotation
+                                        :rotation angle})
+        (update :geometry-child conjv {:type :rotation
+                                       :center center
+                                       :rotation angle}))))
+
+(defn remove-children
+  [modifiers shapes]
+  (cond-> modifiers
+    (d/not-empty? shapes)
+    (update :structure-parent conjv {:type :remove-children
+                                     :value shapes})))
+
+(defn add-children
+  [modifiers shapes index]
+  (cond-> modifiers
+    (d/not-empty? shapes)
+    (update :structure-parent conjv {:type :add-children
+                                     :value shapes
+                                     :index index})))
+
+(defn reflow
+  [modifiers]
+  (-> modifiers
+      (update :structure-parent conjv {:type :reflow})))
+
+(defn scale-content
+  [modifiers value]
+  (-> modifiers
+      (update :structure-child conjv {:type :scale-content :value value})))
+
+(defn change-property
+  [modifiers property value]
+  (-> modifiers
+      (update :structure-child conjv {:type :change-property
+                                      :property property
+                                      :value value})))
+
+(defn add-modifiers
+  [modifiers new-modifiers]
+
+  (cond-> modifiers
+    (some? (:geometry-child new-modifiers))
+    (update :geometry-child #(d/concat-vec [] % (:geometry-child new-modifiers)))
+
+    (some? (:geometry-parent new-modifiers))
+    (update :geometry-parent #(d/concat-vec [] % (:geometry-parent new-modifiers)))
+
+    (some? (:structure-parent new-modifiers))
+    (update :structure-parent #(d/concat-vec [] % (:structure-parent new-modifiers)))
+
+    (some? (:structure-child new-modifiers))
+    (update :structure-child #(d/concat-vec [] % (:structure-child new-modifiers)))))
+
+
+;; These are convenience methods to create single operation modifiers without the builder
+
+(defn move-modifiers
+  ([x y]
+   (move (empty) (gpt/point x y)))
+
+  ([vector]
+   (move (empty) vector)))
+
+(defn move-parent-modifiers
+  ([x y]
+   (move-parent (empty) (gpt/point x y)))
+
+  ([vector]
+   (move-parent (empty) vector)))
+
+(defn resize-modifiers
+  ([vector origin]
+   (resize (empty) vector origin))
+
+  ([vector origin transform transform-inverse]
+   (resize (empty) vector origin transform transform-inverse)))
+
+(defn resize-parent-modifiers
+  ([vector origin]
+   (resize-parent (empty) vector origin))
+
+  ([vector origin transform transform-inverse]
+   (resize-parent (empty) vector origin transform transform-inverse)))
+
+(defn rotation-modifiers
+  [shape center angle]
+  (let [shape-center (gco/center-shape shape)
+        ;; Translation caused by the rotation
+        move-vec
+        (gpt/transform
+         (gpt/point 0 0)
+         (-> (gmt/matrix)
+             (gmt/rotate angle center)
+             (gmt/rotate (- angle) shape-center)))]
+
+    (-> (empty)
+        (rotation shape-center angle)
+        (move move-vec))))
+
+(defn remove-children-modifiers
+  [shapes]
+  (-> (empty)
+      (remove-children shapes)))
+
+(defn add-children-modifiers
+  [shapes index]
+  (-> (empty)
+      (add-children shapes index)))
+
+(defn reflow-modifiers
+  []
+  (-> (empty)
+      (reflow)))
+
+(defn scale-content-modifiers
+  [value]
+  (-> (empty)
+      (scale-content value)))
+
+(defn change-dimensions-modifiers
+  [{:keys [transform transform-inverse] :as shape} attr value]
+  (us/assert map? shape)
+  (us/assert #{:width :height} attr)
+  (us/assert number? value)
+
+  (let [{:keys [proportion proportion-lock]} shape
+        size (select-keys (:selrect shape) [:width :height])
+        new-size (if-not proportion-lock
+                   (assoc size attr value)
+                   (if (= attr :width)
+                     (-> size
+                         (assoc :width value)
+                         (assoc :height (/ value proportion)))
+                     (-> size
+                         (assoc :height value)
+                         (assoc :width (* value proportion)))))
+
+        width (:width new-size)
+        height (:height new-size)
+
+        {sr-width :width sr-height :height} (:selrect shape)
+
+        origin (-> shape :points first)
+        scalex (/ width sr-width)
+        scaley (/ height sr-height)]
+
+    (resize-modifiers (gpt/point scalex scaley) origin transform transform-inverse)))
+
+(defn change-orientation-modifiers
+  [shape orientation]
+  (us/assert map? shape)
+  (us/verify #{:horiz :vert} orientation)
+  (let [width (:width shape)
+        height (:height shape)
+        new-width (if (= orientation :horiz) (max width height) (min width height))
+        new-height (if (= orientation :horiz) (min width height) (max width height))
+
+        shape-transform (:transform shape)
+        shape-transform-inv (:transform-inverse shape)
+        shape-center (gco/center-shape shape)
+        {sr-width :width sr-height :height} (:selrect shape)
+
+        origin (cond-> (gpt/point (:selrect shape))
+                 (some? shape-transform)
+                 (gmt/transform-point-center shape-center shape-transform))
+
+        scalev (gpt/divide (gpt/point new-width new-height)
+                           (gpt/point sr-width sr-height))]
+
+    (resize-modifiers scalev origin shape-transform shape-transform-inv)))
+
+;; Predicates
+
+(defn empty?
+  [modifiers]
+  (and (c/empty? (:geometry-child modifiers))
+       (c/empty? (:geometry-parent modifiers))
+       (c/empty? (:structure-parent modifiers))
+       (c/empty? (:structure-child modifiers))))
+
+(defn child-modifiers?
+  [{:keys [geometry-child structure-child]}]
+  (or (d/not-empty? geometry-child)
+      (d/not-empty? structure-child)))
+
+(defn only-move?
+  "Returns true if there are only move operations"
+  [{:keys [geometry-child geometry-parent]}]
+  (and (every? #(= :move (:type %)) geometry-child)
+       (every? #(= :move (:type %)) geometry-parent)))
+
+(defn has-geometry?
+  [{:keys [geometry-parent geometry-child]}]
+  (or (d/not-empty? geometry-parent)
+      (d/not-empty? geometry-child)))
+
+(defn has-structure?
+  [{:keys [structure-parent structure-child]}]
+  (or (d/not-empty? structure-parent)
+      (d/not-empty? structure-child)))
+
+;; Extract subsets of modifiers
+
+(defn select-child-modifiers
+  [modifiers]
+  (select-keys modifiers [:geometry-child :structure-child]))
+
+(defn select-child-geometry-modifiers
+  [modifiers]
+  (select-keys modifiers [:geometry-child]))
+
+(defn select-parent-modifiers
+  [modifiers]
+  (select-keys modifiers [:geometry-parent :structure-parent]))
+
+(defn select-structure
+  [modifiers]
+  (select-keys modifiers [:structure-parent :structure-child]))
+
+(defn select-geometry
+  [modifiers]
+  (select-keys modifiers [:geometry-parent :geometry-child]))
+
+(defn added-children-frames
+  "Returns the frames that have an 'add-children' operation"
+  [modif-tree]
+  (let [structure-changes
+        (into {}
+              (comp (filter (fn [[_ val]] (-> val :modifiers :structure-parent some?)))
+                    (map (fn [[key val]]
+                           [key (-> val :modifiers :structure-parent)])))
+              modif-tree)]
+    (into []
+          (mapcat (fn [[frame-id changes]]
+                    (->> changes
+                         (filter (fn [{:keys [type]}] (= type :add-children)))
+                         (mapcat (fn [{:keys [value]}]
+                                   (->> value (map (fn [id] {:frame frame-id :shape id}))))))))
+          structure-changes)))
+
+;; Main transformation functions
+
+(defn modifiers->transform
+  "Given a set of modifiers returns its transformation matrix"
+  [modifiers]
+  (letfn [(apply-modifier [matrix {:keys [type vector rotation center origin transform transform-inverse] :as modifier}]
+            (case type
+              :move
+              (gmt/multiply (gmt/translate-matrix vector) matrix)
+
+              :resize
+              (gmt/multiply
+               (-> (gmt/matrix)
+                   (gmt/translate origin)
+                   (cond-> (some? transform)
+                     (gmt/multiply transform))
+                   (gmt/scale vector)
+                   (cond-> (some? transform-inverse)
+                     (gmt/multiply transform-inverse))
+                   (gmt/translate (gpt/negate origin)))
+               matrix)
+
+              :rotation
+              (gmt/multiply
+               (-> (gmt/matrix)
+                   (gmt/translate center)
+                   (gmt/multiply (gmt/rotate-matrix rotation))
+                   (gmt/translate (gpt/negate center)))
+               matrix)))]
+    (let [modifiers (if (d/not-empty? (:geometry-parent modifiers))
+                      (d/concat-vec (:geometry-parent modifiers) (:geometry-child modifiers))
+                      (:geometry-child modifiers))]
+      (when (d/not-empty? modifiers)
+        (->> modifiers
+             (reduce apply-modifier (gmt/matrix)))))))
+
+(defn apply-structure-modifiers
+  "Apply structure changes to a shape"
+  [shape modifiers]
+  (letfn [(scale-text-content
+            [content value]
+
+            (->> content
+                 (txt/transform-nodes
+                  txt/is-text-node?
+                  (fn [attrs]
+                    (let [font-size (-> (get attrs :font-size 14)
+                                        (d/parse-double)
+                                        (* value)
+                                        (str)) ]
+                      (d/txt-merge attrs {:font-size font-size}))))))
+
+          (apply-scale-content
+            [shape value]
+
+            (cond-> shape
+              (cph/text-shape? shape)
+              (update :content scale-text-content value)))]
+    (let [remove-children
+          (fn [shapes children-to-remove]
+            (let [remove? (set children-to-remove)]
+              (d/removev remove? shapes)))
+
+          apply-modifier
+          (fn [shape {:keys [type property value index rotation]}]
+            (cond-> shape
+              (= type :rotation)
+              (update :rotation #(mod (+ % rotation) 360))
+
+              (and (= type :add-children) (some? index))
+              (update :shapes
+                      (fn [shapes]
+                        (if (vector? shapes)
+                          (cph/insert-at-index shapes index value)
+                          (d/concat-vec shapes value))))
+
+              (and (= type :add-children) (nil? index))
+              (update :shapes d/concat-vec value)
+
+              (= type :remove-children)
+              (update :shapes remove-children value)
+
+              (= type :scale-content)
+              (apply-scale-content value)
+
+              (= type :change-property)
+              (assoc property value)))]
+
+      (as-> shape $
+        (reduce apply-modifier $ (:structure-parent modifiers))
+        (reduce apply-modifier $ (:structure-child modifiers))))))

common/src/app/common/types/shape/layout.cljc

@@ -9,12 +9,33 @@
    [app.common.spec :as us]
    [clojure.spec.alpha :as s]))
 
+;; :layout                 ;; :flex, :grid in the future
+;; :layout-flex-dir        ;; :row, :reverse-row, :column, :reverse-column
+;; :layout-gap-type        ;; :simple, :multiple
+;; :layout-gap             ;; {:row-gap number , :column-gap number}
+;; :layout-align-items     ;; :start :end :center :stretch
+;; :layout-justify-content ;; :start :center :end :space-between :space-around
+;; :layout-align-content   ;; :start :center :end :space-between :space-around :stretch (by default)
+;; :layout-wrap-type       ;; :wrap, :no-wrap
+;; :layout-padding-type    ;; :simple, :multiple
+;; :layout-padding         ;; {:p1 num :p2 num :p3 num :p4 num} number could be negative
+
+;; ITEMS
+;; :layout-item-margin      ;; {:m1 0 :m2 0 :m3 0 :m4 0}
+;; :layout-item-margin-type ;; :simple :multiple
+;; :layout-item-h-sizing  ;; :fill :fix :auto
+;; :layout-item-v-sizing  ;; :fill :fix :auto
+;; :layout-item-max-h       ;; num
+;; :layout-item-min-h       ;; num
+;; :layout-item-max-w       ;; num
+;; :layout-item-min-w
+
 (s/def ::layout  #{:flex :grid})
 (s/def ::layout-flex-dir #{:row :reverse-row :column :reverse-column})
 (s/def ::layout-gap-type #{:simple :multiple})
 (s/def ::layout-gap ::us/safe-number)
-(s/def ::layout-align-items #{:start :end :center :strech})
-(s/def ::layout-align-content #{:start :end :center :space-between :space-around :strech})
+(s/def ::layout-align-items #{:start :end :center :stretch})
+(s/def ::layout-align-content #{:start :end :center :space-between :space-around :stretch})
 (s/def ::layout-justify-content #{:start :center :end :space-between :space-around})
 (s/def ::layout-wrap-type #{:wrap :no-wrap})
 (s/def ::layout-padding-type #{:simple :multiple})
@@ -25,15 +46,14 @@
 (s/def ::p4 ::us/safe-number)
 
 (s/def ::layout-padding
-  (s/keys :req-un [::p1]
-          :opt-un [::p2 ::p3 ::p4]))
+  (s/keys :opt-un [::p1 ::p2 ::p3 ::p4]))
 
 (s/def ::row-gap ::us/safe-number)
 (s/def ::column-gap ::us/safe-number)
 (s/def ::layout-type #{:flex :grid})
 
 (s/def ::layout-gap
-  (s/keys :req-un [::row-gap ::column-gap]))
+  (s/keys :opt-un [::row-gap ::column-gap]))
 
 (s/def ::layout-container-props
   (s/keys :opt-un [::layout
@@ -53,25 +73,223 @@
 (s/def ::m3 ::us/safe-number)
 (s/def ::m4 ::us/safe-number)
 
-(s/def ::layout-margin (s/keys :req-un [::m1]
-                               :opt-un [::m2 ::m3 ::m4]))
+(s/def ::layout-item-margin (s/keys :opt-un [::m1 ::m2 ::m3 ::m4]))
 
-(s/def ::layout-margin-type #{:simple :multiple})
-(s/def ::layout-h-behavior #{:fill :fix :auto})
-(s/def ::layout-v-behavior #{:fill :fix :auto})
-(s/def ::layout-align-self #{:start :end :center :strech :baseline})
-(s/def ::layout-max-h ::us/safe-number)
-(s/def ::layout-min-h ::us/safe-number)
-(s/def ::layout-max-w ::us/safe-number)
-(s/def ::layout-min-w ::us/safe-number)
+(s/def ::layout-item-margin-type #{:simple :multiple})
+(s/def ::layout-item-h-sizing #{:fill :fix :auto})
+(s/def ::layout-item-v-sizing #{:fill :fix :auto})
+(s/def ::layout-item-align-self #{:start :end :center :stretch})
+(s/def ::layout-item-max-h ::us/safe-number)
+(s/def ::layout-item-min-h ::us/safe-number)
+(s/def ::layout-item-max-w ::us/safe-number)
+(s/def ::layout-item-min-w ::us/safe-number)
 
 (s/def ::layout-child-props
-  (s/keys :opt-un [::layout-margin
-                   ::layout-margin-type
-                   ::layout-h-behavior
-                   ::layout-v-behavior
-                   ::layout-max-h
-                   ::layout-min-h
-                   ::layout-max-w
-                   ::layout-min-w
-                   ::layout-align-self]))
+  (s/keys :opt-un [::layout-item-margin
+                   ::layout-item-margin-type
+                   ::layout-item-h-sizing
+                   ::layout-item-v-sizing
+                   ::layout-item-max-h
+                   ::layout-item-min-h
+                   ::layout-item-max-w
+                   ::layout-item-min-w
+                   ::layout-item-align-self]))
+
+(defn layout?
+  ([objects id]
+   (layout? (get objects id)))
+  ([shape]
+   (and (= :frame (:type shape)) (= :flex (:layout shape)))))
+
+(defn layout-child? [objects shape]
+  (let [parent-id (:parent-id shape)
+        parent (get objects parent-id)]
+    (layout? parent)))
+
+(defn inside-layout?
+  "Check if the shape is inside a layout"
+  [objects shape]
+
+  (loop [current-id (:id shape)]
+    (let [current (get objects current-id)]
+      (cond
+        (or (nil? current) (= current-id (:parent-id current)))
+        false
+
+        (= :frame (:type current))
+        (:layout current)
+
+        :else
+        (recur (:parent-id current))))))
+
+(defn wrap? [{:keys [layout-wrap-type]}]
+  (= layout-wrap-type :wrap))
+
+(defn fill-width? [child]
+  (= :fill (:layout-item-h-sizing child)))
+
+(defn fill-height? [child]
+  (= :fill (:layout-item-v-sizing child)))
+
+(defn auto-width? [child]
+  (= :auto (:layout-item-h-sizing child)))
+
+(defn auto-height? [child]
+  (= :auto (:layout-item-v-sizing child)))
+
+(defn col?
+  [{:keys [layout-flex-dir]}]
+  (or (= :column layout-flex-dir) (= :reverse-column layout-flex-dir)))
+
+(defn row?
+  [{:keys [layout-flex-dir]}]
+  (or (= :row layout-flex-dir) (= :reverse-row layout-flex-dir)))
+
+(defn gaps
+  [{:keys [layout-gap layout-gap-type]}]
+  (let [layout-gap-row (or (-> layout-gap :row-gap) 0)
+        layout-gap-col (if (= layout-gap-type :simple)
+                         layout-gap-row
+                         (or (-> layout-gap :column-gap) 0))]
+    [layout-gap-row layout-gap-col]))
+
+(defn child-min-width
+  [child]
+  (if (and (fill-width? child)
+           (some? (:layout-item-min-w child)))
+    (max 0 (:layout-item-min-w child))
+    0))
+
+(defn child-max-width
+  [child]
+  (if (and (fill-width? child)
+           (some? (:layout-item-max-w child)))
+    (max 0 (:layout-item-max-w child))
+    ##Inf))
+
+(defn child-min-height
+  [child]
+  (if (and (fill-height? child)
+           (some? (:layout-item-min-h child)))
+    (max 0 (:layout-item-min-h child))
+    0))
+
+(defn child-max-height
+  [child]
+  (if (and (fill-height? child)
+           (some? (:layout-item-max-h child)))
+    (max 0 (:layout-item-max-h child))
+    ##Inf))
+
+(defn child-margins
+  [{{:keys [m1 m2 m3 m4]} :layout-item-margin :keys [layout-item-margin-type]}]
+  (let [m1 (or m1 0)
+        m2 (or m2 0)
+        m3 (or m3 0)
+        m4 (or m4 0)]
+    (if (= layout-item-margin-type :multiple)
+      [m1 m2 m3 m4]
+      [m1 m1 m1 m1])))
+
+(defn child-height-margin
+  [child]
+  (let [[top _ bottom _] (child-margins child)]
+    (+ top bottom)))
+
+(defn child-width-margin
+  [child]
+  (let [[_ right _ left] (child-margins child)]
+    (+ right left)))
+
+(defn h-start?
+  [{:keys [layout-align-items layout-justify-content] :as shape}]
+  (or (and (col? shape)
+           (= layout-align-items :start))
+      (and (row? shape)
+           (= layout-justify-content :start))))
+
+(defn h-center?
+  [{:keys [layout-align-items layout-justify-content] :as shape}]
+  (or (and (col? shape)
+           (= layout-align-items :center))
+      (and (row? shape)
+           (= layout-justify-content :center))))
+
+(defn h-end?
+  [{:keys [layout-align-items layout-justify-content] :as shape}]
+  (or (and (col? shape)
+           (= layout-align-items :end))
+      (and (row? shape)
+           (= layout-justify-content :end))))
+
+(defn v-start?
+  [{:keys [layout-align-items layout-justify-content] :as shape}]
+  (or (and (row? shape)
+           (= layout-align-items :start))
+      (and (col? shape)
+           (= layout-justify-content :start))))
+
+(defn v-center?
+  [{:keys [layout-align-items layout-justify-content] :as shape}]
+  (or (and (row? shape)
+           (= layout-align-items :center))
+      (and (col? shape)
+           (= layout-justify-content :center))))
+
+(defn v-end?
+  [{:keys [layout-align-items layout-justify-content] :as shape}]
+  (or (and (row? shape)
+           (= layout-align-items :end))
+      (and (col? shape)
+           (= layout-justify-content :end))))
+
+(defn content-start?
+  [{:keys [layout-align-content]}]
+  (= :start layout-align-content))
+
+(defn content-center?
+  [{:keys [layout-align-content]}]
+  (= :center layout-align-content))
+
+(defn content-end?
+  [{:keys [layout-align-content]}]
+  (= :end layout-align-content))
+
+(defn content-between?
+  [{:keys [layout-align-content]}]
+  (= :space-between layout-align-content))
+
+(defn content-around?
+  [{:keys [layout-align-content]}]
+  (= :space-around layout-align-content))
+
+(defn content-stretch?
+  [{:keys [layout-align-content]}]
+  (or (= :stretch layout-align-content)
+      (nil? layout-align-content)))
+
+
+(defn reverse?
+  [{:keys [layout-flex-dir]}]
+  (or (= :reverse-row layout-flex-dir)
+      (= :reverse-column layout-flex-dir)))
+
+(defn space-between?
+  [{:keys [layout-justify-content]}]
+  (= layout-justify-content :space-between))
+
+(defn space-around?
+  [{:keys [layout-justify-content]}]
+  (= layout-justify-content :space-around))
+
+(defn align-self-start? [{:keys [layout-item-align-self]}]
+  (= :start layout-item-align-self))
+
+(defn align-self-end? [{:keys [layout-item-align-self]}]
+  (= :end layout-item-align-self))
+
+(defn align-self-center? [{:keys [layout-item-align-self]}]
+  (= :center layout-item-align-self))
+
+(defn align-self-stretch? [{:keys [layout-item-align-self]}]
+  (= :stretch layout-item-align-self))

common/src/app/common/types/shape_tree.cljc

@@ -224,8 +224,31 @@
   "Search for the top nested frame for positioning shapes when moving or creating.
   Looks for all the frames in a position and then goes in depth between the top-most and its
   children to find the target."
-  [objects position]
-  (let [frame-ids (all-frames-by-position objects position)
+  ([objects position]
+   (top-nested-frame objects position nil))
+
+  ([objects position excluded]
+   (assert (or (nil? excluded) (set? excluded)))
+
+   (let [frame-ids (cond->> (all-frames-by-position objects position)
+                     (some? excluded)
+                     (remove excluded))
+
+         frame-set (set frame-ids)]
+
+     (loop [current-id (first frame-ids)]
+       (let [current-shape (get objects current-id)
+             child-frame-id (d/seek #(contains? frame-set %)
+                                    (-> (:shapes current-shape) reverse))]
+         (if (nil? child-frame-id)
+           (or current-id uuid/zero)
+           (recur child-frame-id)))))))
+
+(defn top-nested-frame-ids
+  "Search the top nested frame in a list of ids"
+  [objects ids]
+  
+  (let [frame-ids (->> ids (filter #(cph/frame-shape? objects %)))
         frame-set (set frame-ids)]
     (loop [current-id (first frame-ids)]
       (let [current-shape (get objects current-id)

common/test/common_tests/geom_shapes_test.cljc

@@ -10,6 +10,7 @@
    [app.common.geom.point :as gpt]
    [app.common.geom.shapes :as gsh]
    [app.common.math :as mth :refer [close?]]
+   [app.common.types.modifiers :as ctm]
    [app.common.types.shape :as cts]
    [clojure.test :as t]))
 
@@ -59,7 +60,7 @@
 
   (t/testing "Transform shape with translation modifiers"
     (t/are [type]
-        (let [modifiers {:displacement (gmt/translate-matrix (gpt/point 10 -10))}]
+        (let [modifiers (ctm/move-modifiers (gpt/point 10 -10))]
           (let [shape-before (create-test-shape type {:modifiers modifiers})
                 shape-after  (gsh/transform-shape shape-before)]
             (t/is (not= shape-before shape-after))
@@ -91,9 +92,7 @@
 
   (t/testing "Transform shape with resize modifiers"
     (t/are [type]
-        (let [modifiers {:resize-origin (gpt/point 0 0)
-                         :resize-vector (gpt/point 2 2)
-                         :resize-transform (gmt/matrix)}
+        (let [modifiers (ctm/resize-modifiers (gpt/point 2 2) (gpt/point 0 0))
               shape-before (create-test-shape type {:modifiers modifiers})
               shape-after  (gsh/transform-shape shape-before)]
           (t/is (not= shape-before shape-after))
@@ -113,9 +112,7 @@
 
   (t/testing "Transform with empty resize"
     (t/are [type]
-        (let [modifiers {:resize-origin (gpt/point 0 0)
-                         :resize-vector (gpt/point 1 1)
-                         :resize-transform (gmt/matrix)}
+        (let [modifiers (ctm/resize-modifiers (gpt/point 1 1) (gpt/point 0 0))
               shape-before (create-test-shape type {:modifiers modifiers})
               shape-after  (gsh/transform-shape shape-before)]
           (t/are [prop]
@@ -126,9 +123,7 @@
 
   (t/testing "Transform with resize=0"
     (t/are [type]
-        (let [modifiers {:resize-origin (gpt/point 0 0)
-                         :resize-vector (gpt/point 0 0)
-                         :resize-transform (gmt/matrix)}
+        (let [modifiers (ctm/resize-modifiers (gpt/point 0 0) (gpt/point 0 0))
               shape-before (create-test-shape type {:modifiers modifiers})
               shape-after  (gsh/transform-shape shape-before)]
           (t/is (> (get-in shape-before [:selrect :width])
@@ -142,13 +137,11 @@
 
   (t/testing "Transform shape with rotation modifiers"
     (t/are [type]
-        (let [modifiers {:rotation 30}
-              shape-before (create-test-shape type {:modifiers modifiers})
+        (let [shape-before (create-test-shape type)
+              modifiers (ctm/rotation-modifiers shape-before (gsh/center-shape shape-before) 30 )
+              shape-before (assoc shape-before :modifiers modifiers)
               shape-after  (gsh/transform-shape shape-before)]
 
-          (t/is (not= shape-before shape-after))
-
-          ;; Selrect won't change with a rotation, but points will
           (t/is (close? (get-in shape-before [:selrect :x])
                         (get-in shape-after  [:selrect :x])))
 
@@ -166,9 +159,9 @@
 
   (t/testing "Transform shape with rotation = 0 should leave equal selrect"
     (t/are [type]
-        (let [modifiers {:rotation 0}
-              shape-before (create-test-shape type {:modifiers modifiers})
-              shape-after  (gsh/transform-shape shape-before)]
+        (let [shape-before (create-test-shape type)
+              modifiers (ctm/rotation-modifiers shape-before (gsh/center-shape shape-before) 0)
+              shape-after  (gsh/transform-shape (assoc shape-before :modifiers modifiers))]
           (t/are [prop]
               (t/is (close? (get-in shape-before [:selrect prop])
                             (get-in shape-after [:selrect prop])))
@@ -177,12 +170,12 @@
 
   (t/testing "Transform shape with invalid selrect fails gracefully"
     (t/are [type selrect]
-        (let [modifiers {:displacement (gmt/matrix)}
-              shape-before (-> (create-test-shape type {:modifiers modifiers})
-                               (assoc :selrect selrect))
-              shape-after  (gsh/transform-shape shape-before)]
-          (= (:selrect shape-before)
-             (:selrect shape-after)))
+        (let [modifiers (ctm/move-modifiers 0 0)
+              shape-before (-> (create-test-shape type) (assoc :selrect selrect))
+              shape-after  (gsh/transform-shape shape-before modifiers)]
+          
+          (t/is (= (:selrect shape-before)
+                   (:selrect shape-after))))
 
       :rect {:x 0.0 :y 0.0 :x1 0.0 :y1 0.0 :x2 ##Inf :y2 ##Inf :width ##Inf :height ##Inf}
       :path {:x 0.0 :y 0.0 :x1 0.0 :y1 0.0 :x2 ##Inf :y2 ##Inf :width ##Inf :height ##Inf}

frontend/resources/images/icons/auto-row-column.svg

@@ -1,3 +0,0 @@
-<svg xmlns="http://www.w3.org/2000/svg" width="500" height="500" viewBox="0 0 132.292 132.292">
-  <path d="M0 0v132.292h132.292V0H0zm11.232 11.232H121.06v109.827H11.232V11.232zm17.876 18.346v73.136h29.726V29.578H29.108zm44.45 0v73.136h29.726V29.578H73.558z"/>
-</svg>

frontend/resources/images/icons/layout-columns.svg

@@ -0,0 +1,3 @@
+<svg xmlns="http://www.w3.org/2000/svg" width="500" height="500" viewBox="0 0 132.292 132.292">
+  <path transform="rotate(90, 66.146, 66.146)" d="M0 0v132.292h132.292V0H0zm11.232 11.232H121.06v109.827H11.232V11.232zm17.876 18.346v73.136h29.726V29.578H29.108zm44.45 0v73.136h29.726V29.578H73.558z"/>
+</svg>

frontend/resources/styles/main/partials/sidebar-element-options.scss

@@ -182,6 +182,10 @@
     &.error {
       border-color: $color-danger;
     }
+
+    &[disabled] {
+      color: $color-gray-30;
+    }
   }
 
   .input-select {

frontend/src/app/main/data/workspace.cljs

@@ -25,6 +25,7 @@
    [app.common.types.pages-list :as ctpl]
    [app.common.types.shape :as cts]
    [app.common.types.shape-tree :as ctst]
+   [app.common.types.shape.layout :as ctl]
    [app.common.uuid :as uuid]
    [app.config :as cfg]
    [app.main.data.comments :as dcm]
@@ -52,8 +53,8 @@
    [app.main.data.workspace.path.shapes-to-path :as dwps]
    [app.main.data.workspace.persistence :as dwp]
    [app.main.data.workspace.selection :as dws]
-   [app.main.data.workspace.shape-layout :as dwsl]
    [app.main.data.workspace.shapes :as dwsh]
+   [app.main.data.workspace.shapes-update-layout :as dwul]
    [app.main.data.workspace.state-helpers :as wsh]
    [app.main.data.workspace.svg-upload :as svg]
    [app.main.data.workspace.thumbnails :as dwth]
@@ -686,11 +687,16 @@
                                              shapes-to-detach
                                              shapes-to-reroot
                                              shapes-to-deroot
-                                             ids)]
+                                             ids)
+
+            layouts-to-update
+            (into #{}
+                  (filter (partial ctl/layout? objects))
+                  (concat [parent-id] (cph/get-parent-ids objects parent-id)))]
 
         (rx/of (dch/commit-changes changes)
                (dwco/expand-collapse parent-id)
-               (dwsl/update-layout-positions [parent-id]))))))
+               (dwul/update-layout-positions layouts-to-update))))))
 
 (defn relocate-selected-shapes
   [parent-id to-index]
@@ -1571,37 +1577,6 @@
 
         (rx/of (dch/commit-changes changes))))))
 
-;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
-;; Artboard
-;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
-
-(defn create-artboard-from-selection
-  []
-  (ptk/reify ::create-artboard-from-selection
-    ptk/WatchEvent
-    (watch [_ state _]
-      (let [page-id       (:current-page-id state)
-            objects       (wsh/lookup-page-objects state page-id)
-            selected      (wsh/lookup-selected state)
-            selected-objs (map #(get objects %) selected)]
-        (when (d/not-empty? selected)
-          (let [srect    (gsh/selection-rect selected-objs)
-                frame-id (get-in objects [(first selected) :frame-id])
-                parent-id (get-in objects [(first selected) :parent-id])
-                shape    (-> (cts/make-minimal-shape :frame)
-                             (merge {:x (:x srect) :y (:y srect) :width (:width srect) :height (:height srect)})
-                             (assoc :frame-id frame-id :parent-id parent-id)
-                             (cond-> (not= frame-id uuid/zero)
-                               (assoc :fills [] :hide-in-viewer true))
-                             (cts/setup-rect-selrect))]
-            (rx/of
-             (dwu/start-undo-transaction)
-             (dwsh/add-shape shape)
-             (dwsh/move-shapes-into-frame (:id shape) selected)
-
-             (dwu/commit-undo-transaction))))))))
-
-
 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
 ;; Remove graphics
 ;; TODO: this should be deprecated and removed together with components-v2

frontend/src/app/main/data/workspace/comments.cljs

@@ -159,8 +159,8 @@
             build-move-event
             (fn [comment-thread]
               (let [frame (get objects (:frame-id comment-thread))
-                    frame' (-> (merge frame (get object-modifiers (:frame-id comment-thread)))
-                               (gsh/transform-shape))
+                    modifiers (get object-modifiers (:frame-id comment-thread))
+                    frame' (gsh/transform-shape frame modifiers)
                     moved (gpt/to-vec (gpt/point (:x frame) (:y frame))
                                       (gpt/point (:x frame') (:y frame')))
                     position (get-in threads-position-map [(:id comment-thread) :position])

frontend/src/app/main/data/workspace/drawing/box.cljs

@@ -10,6 +10,7 @@
    [app.common.geom.shapes :as gsh]
    [app.common.math :as mth]
    [app.common.pages.helpers :as cph]
+   [app.common.types.modifiers :as ctm]
    [app.common.types.shape :as cts]
    [app.common.types.shape-tree :as ctst]
    [app.common.uuid :as uuid]
@@ -20,29 +21,38 @@
    [beicon.core :as rx]
    [potok.core :as ptk]))
 
-(defn truncate-zero [num default]
-  (if (mth/almost-zero? num) default num))
+(defn adjust-ratio
+  [point initial]
+  (let [v (gpt/to-vec point initial)
+        dx (mth/abs (:x v))
+        dy (mth/abs (:y v))
+        sx (mth/sign (:x v))
+        sy (mth/sign (:y v))]
+
+    (cond-> point
+      (> dx dy)
+      (assoc :y (- (:y point) (* sy (- dx dy))))
+
+      (> dy dx)
+      (assoc :x (- (:x point) (* sx (- dy dx)))))))
+
+(defn resize-shape [{:keys [x y width height] :as shape} initial point lock?]
+  (let [draw-rect (gsh/make-rect initial (cond-> point lock? (adjust-ratio initial)))
+        shape-rect (gsh/make-rect x y width height)
+
+        scalev (gpt/point (/ (:width draw-rect) (:width shape-rect))
+                          (/ (:height draw-rect) (:height shape-rect)))
+
+        movev (gpt/to-vec (gpt/point shape-rect) (gpt/point draw-rect))]
 
-(defn resize-shape [{:keys [x y width height] :as shape} point lock?]
-  (let [;; The new shape behaves like a resize on the bottom-right corner
-        initial (gpt/point (+ x width) (+ y height))
-        shapev  (gpt/point width height)
-        deltav  (gpt/to-vec initial point)
-        scalev  (-> (gpt/divide (gpt/add shapev deltav) shapev)
-                    (update :x truncate-zero 0.01)
-                    (update :y truncate-zero 0.01))
-        scalev  (if lock?
-                  (let [v (max (:x scalev) (:y scalev))]
-                    (gpt/point v v))
-                  scalev)]
     (-> shape
         (assoc :click-draw? false)
-        (assoc-in [:modifiers :resize-vector] scalev)
-        (assoc-in [:modifiers :resize-origin] (gpt/point x y))
-        (assoc-in [:modifiers :resize-rotation] 0))))
+        (gsh/transform-shape (-> (ctm/empty)
+                                 (ctm/resize scalev (gpt/point x y))
+                                 (ctm/move movev))))))
 
-(defn update-drawing [state point lock?]
-  (update-in state [:workspace-drawing :object] resize-shape point lock?))
+(defn update-drawing [state initial point lock?]
+  (update-in state [:workspace-drawing :object] resize-shape initial point lock?))
 
 (defn move-drawing
   [{:keys [x y]}]
@@ -58,8 +68,7 @@
             layout  (get state :workspace-layout)
             snap-pixel? (contains? layout :snap-pixel-grid)
 
-            initial (cond-> @ms/mouse-position
-                      snap-pixel? gpt/round)
+            initial (cond-> @ms/mouse-position snap-pixel? gpt/round)
 
             page-id (:current-page-id state)
             objects (wsh/lookup-page-objects state page-id)
@@ -97,7 +106,7 @@
                       (rx/map #(conj current %)))))
               (rx/map
                (fn [[_ shift? point]]
-                 #(update-drawing % (cond-> point snap-pixel? gpt/round) shift?)))
+                 #(update-drawing % initial (cond-> point snap-pixel? gpt/round) shift?)))
 
               (rx/take-until stoper))
          (rx/of (common/handle-finish-drawing)))))))

frontend/src/app/main/data/workspace/drawing/common.cljs

@@ -6,10 +6,10 @@
 
 (ns app.main.data.workspace.drawing.common
   (:require
-   [app.common.geom.matrix :as gmt]
    [app.common.geom.shapes :as gsh]
    [app.common.math :as mth]
    [app.common.pages.helpers :as cph]
+   [app.common.types.modifiers :as ctm]
    [app.common.types.shape :as cts]
    [app.main.data.workspace.shapes :as dwsh]
    [app.main.data.workspace.state-helpers :as wsh]
@@ -51,8 +51,7 @@
                    
                    (and click-draw? (not text?))
                    (-> (assoc :width min-side :height min-side)
-                       (assoc-in [:modifiers :displacement]
-                                 (gmt/translate-matrix (- (/ min-side 2)) (- (/ min-side 2)))))
+                       (gsh/transform-shape (ctm/move-modifiers (- (/ min-side 2)) (- (/ min-side 2)))))
 
                    (and click-draw? text?)
                    (assoc :height 17 :width 4 :grow-type :auto-width)
@@ -61,8 +60,7 @@
                    (cts/setup-rect-selrect)
 
                    :always
-                   (-> (gsh/transform-shape)
-                       (dissoc :initialized? :click-draw?)))]
+                   (dissoc :initialized? :click-draw?))]
              ;; Add & select the created shape to the workspace
              (rx/concat
               (if (= :text (:type shape))

frontend/src/app/main/data/workspace/guides.cljs

@@ -79,8 +79,7 @@
             build-move-event
             (fn [guide]
               (let [frame (get objects (:frame-id guide))
-                    frame' (-> (merge frame (get object-modifiers (:frame-id guide)))
-                               (gsh/transform-shape))
+                    frame' (gsh/transform-shape (get object-modifiers (:frame-id guide)))
 
                     moved (gpt/to-vec (gpt/point (:x frame) (:y frame))
                                       (gpt/point (:x frame') (:y frame')))

frontend/src/app/main/data/workspace/modifiers.cljs

@@ -0,0 +1,297 @@
+;; This Source Code Form is subject to the terms of the Mozilla Public
+;; License, v. 2.0. If a copy of the MPL was not distributed with this
+;; file, You can obtain one at http://mozilla.org/MPL/2.0/.
+;;
+;; Copyright (c) KALEIDOS INC
+
+(ns app.main.data.workspace.modifiers
+  "Events related with shapes transformations"
+  (:require
+   [app.common.data :as d]
+   [app.common.geom.point :as gpt]
+   [app.common.geom.shapes :as gsh]
+   [app.common.math :as mth]
+   [app.common.pages.common :as cpc]
+   [app.common.pages.helpers :as cph]
+   [app.common.spec :as us]
+   [app.common.types.modifiers :as ctm]
+   [app.common.types.shape.layout :as ctl]
+   [app.main.data.workspace.changes :as dch]
+   [app.main.data.workspace.comments :as-alias dwcm]
+   [app.main.data.workspace.guides :as-alias dwg]
+   [app.main.data.workspace.state-helpers :as wsh]
+   [app.main.data.workspace.undo :as dwu]
+   [beicon.core :as rx]
+   [cljs.spec.alpha :as s]
+   [potok.core :as ptk]))
+
+;; -- temporary modifiers -------------------------------------------
+
+;; During an interactive transformation of shapes (e.g. when resizing or rotating
+;; a group with the mouse), there are a lot of objects that need to be modified
+;; (in this case, the group and all its children).
+;;
+;; To avoid updating the shapes theirselves, and forcing redraw of all components
+;; that depend on the "objects" global state, we set a "modifiers" structure, with
+;; the changes that need to be applied, and store it in :workspace-modifiers global
+;; variable. The viewport reads this and merges it into the objects list it uses to
+;; paint the viewport content, redrawing only the objects that have new modifiers.
+;;
+;; When the interaction is finished (e.g. user releases mouse button), the
+;; apply-modifiers event is done, that consolidates all modifiers into the base
+;; geometric attributes of the shapes.
+
+
+(defn- check-delta
+  "If the shape is a component instance, check its relative position respect the
+  root of the component, and see if it changes after applying a transformation."
+  [shape root transformed-shape transformed-root objects modif-tree]
+  (let [root
+        (cond
+          (:component-root? shape)
+          shape
+
+          (nil? root)
+          (cph/get-root-shape objects shape)
+
+          :else root)
+
+        transformed-root
+        (cond
+          (:component-root? transformed-shape)
+          transformed-shape
+
+          (nil? transformed-root)
+          (as-> (cph/get-root-shape objects transformed-shape) $
+            (gsh/transform-shape (merge $ (get modif-tree (:id $)))))
+
+          :else transformed-root)
+
+        shape-delta
+        (when root
+          (gpt/point (- (gsh/left-bound shape) (gsh/left-bound root))
+                     (- (gsh/top-bound shape) (gsh/top-bound root))))
+
+        transformed-shape-delta
+        (when transformed-root
+          (gpt/point (- (gsh/left-bound transformed-shape) (gsh/left-bound transformed-root))
+                     (- (gsh/top-bound transformed-shape) (gsh/top-bound transformed-root))))
+
+        ;; There are cases in that the coordinates change slightly (e.g. when
+        ;; rounding to pixel, or when recalculating text positions in different
+        ;; zoom levels). To take this into account, we ignore movements smaller
+        ;; than 1 pixel.
+        distance (if (and shape-delta transformed-shape-delta)
+                   (gpt/distance-vector shape-delta transformed-shape-delta)
+                   (gpt/point 0 0))
+
+        ignore-geometry? (and (< (:x distance) 1) (< (:y distance) 1))]
+
+    [root transformed-root ignore-geometry?]))
+
+(defn- get-ignore-tree
+  "Retrieves a map with the flag `ignore-geometry?` given a tree of modifiers"
+  ([modif-tree objects shape]
+   (get-ignore-tree modif-tree objects shape nil nil {}))
+
+  ([modif-tree objects shape root transformed-root ignore-tree]
+   (let [children (map (d/getf objects) (:shapes shape))
+
+         shape-id (:id shape)
+         transformed-shape (gsh/transform-shape shape (get modif-tree shape-id))
+
+         [root transformed-root ignore-geometry?]
+         (check-delta shape root transformed-shape transformed-root objects modif-tree)
+
+         ignore-tree (assoc ignore-tree shape-id ignore-geometry?)
+
+         set-child
+         (fn [ignore-tree child]
+           (get-ignore-tree modif-tree objects child root transformed-root ignore-tree))]
+
+     (reduce set-child ignore-tree children))))
+
+(defn- update-grow-type
+  [shape old-shape]
+  (let [auto-width? (= :auto-width (:grow-type shape))
+        auto-height? (= :auto-height (:grow-type shape))
+
+        changed-width? (not (mth/close? (:width shape) (:width old-shape)))
+        changed-height? (not (mth/close? (:height shape) (:height old-shape)))
+
+        change-to-fixed? (or (and auto-width? (or changed-height? changed-width?))
+                             (and auto-height? changed-height?))]
+    (cond-> shape
+      change-to-fixed?
+      (assoc :grow-type :fixed))))
+
+(defn- clear-local-transform []
+  (ptk/reify ::clear-local-transform
+    ptk/UpdateEvent
+    (update [_ state]
+      (-> state
+          (dissoc :workspace-modifiers)
+          (dissoc :app.main.data.workspace.transforms/current-move-selected)))))
+
+(defn create-modif-tree
+  [ids modifiers]
+  (us/verify (s/coll-of uuid?) ids)
+  (into {} (map #(vector % {:modifiers modifiers})) ids))
+
+(defn build-modif-tree
+  [ids objects get-modifier]
+  (us/verify (s/coll-of uuid?) ids)
+  (into {} (map #(vector % {:modifiers (get-modifier (get objects %))})) ids))
+
+(defn build-change-frame-modifiers
+  [modif-tree objects selected target-frame drop-index]
+
+  (let [origin-frame-ids (->> selected (group-by #(get-in objects [% :frame-id])))
+        child-set (set (get-in objects [target-frame :shapes]))
+        layout? (ctl/layout? objects target-frame)
+
+        set-parent-ids
+        (fn [modif-tree shapes target-frame]
+          (reduce
+           (fn [modif-tree id]
+             (update-in
+              modif-tree
+              [id :modifiers]
+              #(-> %
+                   (ctm/change-property :frame-id target-frame)
+                   (ctm/change-property :parent-id target-frame))))
+           modif-tree
+           shapes))
+
+        update-frame-modifiers
+        (fn [modif-tree [original-frame shapes]]
+          (let [shapes (->> shapes (d/removev #(= target-frame %)))
+                shapes (cond->> shapes
+                         (and layout? (= original-frame target-frame))
+                         ;; When movining inside a layout frame remove the shapes that are not immediate children
+                         (filterv #(contains? child-set %)))]
+            (cond-> modif-tree
+              (not= original-frame target-frame)
+              (-> (update-in [original-frame :modifiers] ctm/remove-children shapes)
+                  (update-in [target-frame :modifiers] ctm/add-children shapes drop-index)
+                  (set-parent-ids shapes target-frame))
+
+              (and layout? (= original-frame target-frame))
+              (update-in [target-frame :modifiers] ctm/add-children shapes drop-index))))]
+
+    (reduce update-frame-modifiers modif-tree origin-frame-ids)))
+
+(defn modif->js
+     [modif-tree objects]
+     (clj->js (into {}
+                    (map (fn [[k v]]
+                           [(get-in objects [k :name]) v]))
+                    modif-tree)))
+
+(defn set-modifiers
+  ([modif-tree]
+   (set-modifiers modif-tree false))
+
+  ([modif-tree ignore-constraints]
+   (set-modifiers modif-tree ignore-constraints false))
+
+  ([modif-tree ignore-constraints ignore-snap-pixel]
+   (ptk/reify ::set-modifiers
+     ptk/UpdateEvent
+     (update [_ state]
+       (let [objects
+             (wsh/lookup-page-objects state)
+
+             snap-pixel?
+             (and (not ignore-snap-pixel) (contains? (:workspace-layout state) :snap-pixel-grid))
+
+             modif-tree
+             (gsh/set-objects-modifiers modif-tree objects ignore-constraints snap-pixel?)]
+
+         (assoc state :workspace-modifiers modif-tree))))))
+
+;; Rotation use different algorithm to calculate children modifiers (and do not use child constraints).
+(defn set-rotation-modifiers
+  ([angle shapes]
+   (set-rotation-modifiers angle shapes (-> shapes gsh/selection-rect gsh/center-selrect)))
+
+  ([angle shapes center]
+   (ptk/reify ::set-rotation-modifiers
+     ptk/UpdateEvent
+     (update [_ state]
+       (let [objects     (wsh/lookup-page-objects state)
+             ids
+             (->> shapes
+                  (remove #(get % :blocked false))
+                  (filter #((cpc/editable-attrs (:type %)) :rotation))
+                  (map :id))
+
+             get-modifier
+             (fn [shape]
+               (ctm/rotation-modifiers shape center angle))
+
+             modif-tree
+             (-> (build-modif-tree ids objects get-modifier)
+                 (gsh/set-objects-modifiers objects false false))]
+
+         (assoc state :workspace-modifiers modif-tree))))))
+
+
+(defn apply-modifiers
+  ([]
+   (apply-modifiers nil))
+
+  ([{:keys [undo-transation?] :or {undo-transation? true}}]
+   (ptk/reify ::apply-modifiers
+     ptk/WatchEvent
+     (watch [_ state _]
+       (let [objects           (wsh/lookup-page-objects state)
+             object-modifiers  (get state :workspace-modifiers)
+
+             ids (or (keys object-modifiers) [])
+             ids-with-children (into (vec ids) (mapcat #(cph/get-children-ids objects %)) ids)
+
+             shapes            (map (d/getf objects) ids)
+             ignore-tree       (->> (map #(get-ignore-tree object-modifiers objects %) shapes)
+                                    (reduce merge {}))]
+
+         (rx/concat
+          (if undo-transation?
+            (rx/of (dwu/start-undo-transaction))
+            (rx/empty))
+          (rx/of (ptk/event ::dwg/move-frame-guides ids-with-children)
+                 (ptk/event ::dwcm/move-frame-comment-threads ids-with-children)
+                 (dch/update-shapes
+                  ids
+                  (fn [shape]
+                    (let [modif (get-in object-modifiers [(:id shape) :modifiers])
+                          text-shape? (cph/text-shape? shape)]
+                      (-> shape
+                          (gsh/transform-shape modif)
+                          (cond-> text-shape?
+                            (update-grow-type shape)))))
+                  {:reg-objects? true
+                   :ignore-tree ignore-tree
+                   ;; Attributes that can change in the transform. This way we don't have to check
+                   ;; all the attributes
+                   :attrs [:selrect
+                           :points
+                           :x
+                           :y
+                           :width
+                           :height
+                           :content
+                           :transform
+                           :transform-inverse
+                           :rotation
+                           :position-data
+                           :flip-x
+                           :flip-y
+                           :grow-type
+                           :layout-item-h-sizing
+                           :layout-item-v-sizing
+                           ]})
+                 (clear-local-transform))
+          (if undo-transation?
+            (rx/of (dwu/commit-undo-transaction))
+            (rx/empty))))))))

frontend/src/app/main/data/workspace/selection.cljs

@@ -21,6 +21,7 @@
    [app.main.data.modal :as md]
    [app.main.data.workspace.changes :as dch]
    [app.main.data.workspace.collapse :as dwc]
+   [app.main.data.workspace.shapes-update-layout :as dwul]
    [app.main.data.workspace.state-helpers :as wsh]
    [app.main.data.workspace.thumbnails :as dwt]
    [app.main.data.workspace.zoom :as dwz]
@@ -552,8 +553,11 @@
                                        (filter #(= :frame (get-in % [:obj :type])))
                                        (map #(vector (:old-id %) (get-in % [:obj :id]))))
 
-                  id-duplicated   (first new-selected)]
+                  id-duplicated   (first new-selected)
 
+                  frames (into #{}
+                               (map #(get-in objects [% :frame-id]))
+                               selected)]
               (rx/concat
                (->> (rx/from dup-frames)
                     (rx/map (fn [[old-id new-id]] (dwt/duplicate-thumbnail old-id new-id))))
@@ -561,6 +565,7 @@
                ;; Warning: This order is important for the focus mode.
                (rx/of (dch/commit-changes changes)
                       (select-shapes new-selected)
+                      (dwul/update-layout-positions frames)
                       (memorize-duplicated id-original id-duplicated))))))))))
 
 (defn change-hover-state

frontend/src/app/main/data/workspace/shape_layout.cljs

@@ -8,9 +8,13 @@
   (:require
    [app.common.data :as d]
    [app.common.pages.helpers :as cph]
+   [app.common.types.shape.layout :as ctl]
+   [app.common.uuid :as uuid]
    [app.main.data.workspace.changes :as dwc]
+   [app.main.data.workspace.selection :as dwse]
+   [app.main.data.workspace.shapes :as dws]
+   [app.main.data.workspace.shapes-update-layout :as wsul]
    [app.main.data.workspace.state-helpers :as wsh]
-   [app.main.data.workspace.transforms :as dwt]
    [beicon.core :as rx]
    [potok.core :as ptk]))
 
@@ -25,8 +29,7 @@
    :layout-wrap-type
    :layout-padding-type
    :layout-padding
-   ])
-
+   :layout-gap-type])
 
 (def initial-flex-layout
   {:layout                 :flex
@@ -35,7 +38,7 @@
    :layout-gap             {:row-gap 0 :column-gap 0}
    :layout-align-items     :start
    :layout-justify-content :start
-   :layout-align-content   :strech
+   :layout-align-content   :stretch
    :layout-wrap-type       :no-wrap
    :layout-padding-type    :simple
    :layout-padding         {:p1 0 :p2 0 :p3 0 :p4 0}})
@@ -43,30 +46,50 @@
 (def initial-grid-layout ;; TODO
   {:layout :grid})
 
-(defn update-layout-positions
-  [ids]
-  (ptk/reify ::update-layout-positions
-    ptk/WatchEvent
-    (watch [_ state _]
-      (let [objects (wsh/lookup-page-objects state)
-            ids     (->> ids (filter #(get-in objects [% :layout])))]
-        (if (d/not-empty? ids)
-          (rx/of (dwt/set-modifiers ids)
-                 (dwt/apply-modifiers))
-          (rx/empty))))))
+(defn get-layout-initializer
+  [type]
+  (let [initial-layout-data (if (= type :flex) initial-flex-layout initial-grid-layout)]
+    (fn [shape]
+      (-> shape
+          (merge shape initial-layout-data)))))
 
-;; TODO: Remove constraints from children
 (defn create-layout
   [ids type]
   (ptk/reify ::create-layout
     ptk/WatchEvent
-    (watch [_ _ _]
-      (if (= type :flex)
-        (rx/of (dwc/update-shapes ids #(merge % initial-flex-layout))
-               (update-layout-positions ids))
-        (rx/of (dwc/update-shapes ids #(merge % initial-grid-layout))
-               (update-layout-positions ids))))))
+    (watch [_ state _]
+      (let [objects (wsh/lookup-page-objects state)
+            children-ids (into [] (mapcat #(get-in objects [% :shapes])) ids)]
+        (rx/of (dwc/update-shapes ids (get-layout-initializer type))
+               (wsul/update-layout-positions ids)
+               (dwc/update-shapes children-ids #(dissoc % :constraints-h :constraints-v)))))))
 
+(defn create-layout-from-selection
+  [type]
+  (ptk/reify ::create-layout-from-selection
+    ptk/WatchEvent
+    (watch [_ state _]
+
+      (let [page-id         (:current-page-id state)
+            objects         (wsh/lookup-page-objects state page-id)
+            selected        (wsh/lookup-selected state)
+            selected-shapes (map (d/getf objects) selected)
+            single?         (= (count selected-shapes) 1)
+            has-group?      (->> selected-shapes (d/seek cph/group-shape?))
+            is-group?       (and single? has-group?)]
+        (if is-group?
+          (let [new-shape-id (uuid/next)
+                parent-id    (:parent-id (first selected-shapes))
+                shapes-ids   (:shapes (first selected-shapes))
+                ordered-ids  (into (d/ordered-set) shapes-ids)]
+            (rx/of (dwse/select-shapes ordered-ids)
+                   (dws/create-artboard-from-selection new-shape-id parent-id)
+                   (create-layout [new-shape-id] type)
+                   (dws/delete-shapes page-id selected)))
+
+          (let [new-shape-id (uuid/next)]
+            (rx/of (dws/create-artboard-from-selection new-shape-id)
+                   (create-layout [new-shape-id] type))))))))
 
 (defn remove-layout
   [ids]
@@ -74,7 +97,23 @@
     ptk/WatchEvent
     (watch [_ _ _]
       (rx/of (dwc/update-shapes ids #(apply dissoc % layout-keys))
-             (update-layout-positions ids)))))
+             (wsul/update-layout-positions ids)))))
+
+(defn toogle-layout-flex
+  []
+  (ptk/reify ::toogle-layout-flex
+    ptk/WatchEvent
+    (watch [_ state _]
+      (let [page-id         (:current-page-id state)
+            objects         (wsh/lookup-page-objects state page-id)
+            selected        (wsh/lookup-selected state)
+            selected-shapes (map (d/getf objects) selected)
+            single?         (= (count selected-shapes) 1)
+            has-flex-layout? (and single? (= :flex (:layout (first selected-shapes))))]
+
+        (if has-flex-layout?
+          (rx/of (remove-layout selected))
+          (rx/of (create-layout-from-selection :flex)))))))
 
 (defn update-layout
   [ids changes]
@@ -82,7 +121,7 @@
     ptk/WatchEvent
     (watch [_ _ _]
       (rx/of (dwc/update-shapes ids #(d/deep-merge % changes))
-             (update-layout-positions ids)))))
+             (wsul/update-layout-positions ids)))))
 
 (defn update-layout-child
   [ids changes]
@@ -90,6 +129,7 @@
     ptk/WatchEvent
     (watch [_ state _]
       (let [objects (wsh/lookup-page-objects state)
-            parent-ids (->> ids (map #(cph/get-parent-id objects %)))]
+            parent-ids (->> ids (map #(cph/get-parent-id objects %)))
+            layout-ids (->> ids (filter (comp ctl/layout? (d/getf objects))))]
         (rx/of (dwc/update-shapes ids #(d/deep-merge (or % {}) changes))
-               (update-layout-positions parent-ids))))))
+               (wsul/update-layout-positions (d/concat-vec layout-ids parent-ids)))))))

frontend/src/app/main/data/workspace/shapes.cljs

@@ -9,6 +9,7 @@
    [app.common.data :as d]
    [app.common.data.macros :as dm]
    [app.common.geom.proportions :as gpr]
+   [app.common.geom.shapes :as gsh]
    [app.common.pages.changes-builder :as pcb]
    [app.common.pages.helpers :as cph]
    [app.common.spec :as us]
@@ -16,13 +17,15 @@
    [app.common.types.shape :as cts]
    [app.common.types.shape-tree :as ctst]
    [app.common.types.shape.interactions :as ctsi]
+   [app.common.types.shape.layout :as ctl]
    [app.common.uuid :as uuid]
    [app.main.data.comments :as dc]
    [app.main.data.workspace.changes :as dch]
    [app.main.data.workspace.edition :as dwe]
    [app.main.data.workspace.selection :as dws]
-   [app.main.data.workspace.shape-layout :as dwsl]
+   [app.main.data.workspace.shapes-update-layout :as dwsul]
    [app.main.data.workspace.state-helpers :as wsh]
+   [app.main.data.workspace.undo :as dwu]
    [app.main.features :as features]
    [app.main.streams :as ms]
    [beicon.core :as rx]
@@ -101,7 +104,7 @@
 
          (rx/concat
           (rx/of (dch/commit-changes changes)
-                 (dwsl/update-layout-positions [(:parent-id shape)])
+                 (dwsul/update-layout-positions [(:parent-id shape)])
                  (when-not no-select?
                    (dws/select-shapes (d/ordered-set id))))
           (when (= :text (:type attrs))
@@ -146,6 +149,10 @@
              ids     (cph/clean-loops objects ids)
              lookup  (d/getf objects)
 
+             layout-ids (->> ids
+                             (mapcat (partial cph/get-parent-ids objects))
+                             (filter (partial ctl/layout? objects)))
+
              components-v2 (features/active-feature? state :components-v2)
 
              groups-to-unmask
@@ -265,8 +272,9 @@
                                                                  (reduce ctp/remove-flow flows))))))]
 
          (rx/of (dc/detach-comment-thread ids)
-                (dwsl/update-layout-positions all-parents)
-                (dch/commit-changes changes)))))))
+                (dwsul/update-layout-positions all-parents)
+                (dch/commit-changes changes)
+                (dwsul/update-layout-positions layout-ids)))))))
 
 (defn- viewport-center
   [state]
@@ -292,3 +300,38 @@
                       (assoc :frame-id frame-id)
                       (cts/setup-rect-selrect))]
         (rx/of (add-shape shape))))))
+
+;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
+;; Artboard
+;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
+
+(defn create-artboard-from-selection
+  ([]
+   (create-artboard-from-selection nil))
+  ([id]
+   (create-artboard-from-selection id nil))
+  ([id parent-id]
+   (ptk/reify ::create-artboard-from-selection
+     ptk/WatchEvent
+     (watch [_ state _]
+       (let [page-id       (:current-page-id state)
+             objects       (wsh/lookup-page-objects state page-id)
+             selected      (wsh/lookup-selected state)
+             selected-objs (map #(get objects %) selected)]
+         (when (d/not-empty? selected)
+           (let [srect     (gsh/selection-rect selected-objs)
+                 frame-id  (get-in objects [(first selected) :frame-id])
+                 parent-id (or parent-id (get-in objects [(first selected) :parent-id]))
+                 shape     (-> (cts/make-minimal-shape :frame)
+                               (merge {:x (:x srect) :y (:y srect) :width (:width srect) :height (:height srect)})
+                               (cond-> id
+                                 (assoc :id id))
+                               (assoc :frame-id frame-id :parent-id parent-id)
+                               (cond-> (not= frame-id uuid/zero)
+                                 (assoc :fills [] :hide-in-viewer true))
+                               (cts/setup-rect-selrect))]
+             (rx/of
+              (dwu/start-undo-transaction)
+              (add-shape shape)
+              (move-shapes-into-frame (:id shape) selected)
+              (dwu/commit-undo-transaction)))))))))

frontend/src/app/main/data/workspace/shapes_update_layout.cljs

@@ -0,0 +1,28 @@
+;; This Source Code Form is subject to the terms of the Mozilla Public
+;; License, v. 2.0. If a copy of the MPL was not distributed with this
+;; file, You can obtain one at http://mozilla.org/MPL/2.0/.
+;;
+;; Copyright (c) KALEIDOS INC
+
+(ns app.main.data.workspace.shapes-update-layout
+  (:require
+   [app.common.data :as d]
+   [app.common.types.modifiers :as ctm]
+   [app.common.types.shape.layout :as ctl]
+   [app.main.data.workspace.modifiers :as dwm]
+   [app.main.data.workspace.state-helpers :as wsh]
+   [beicon.core :as rx]
+   [potok.core :as ptk]))
+
+(defn update-layout-positions
+  [ids]
+  (ptk/reify ::update-layout-positions
+    ptk/WatchEvent
+    (watch [_ state _]
+      (let [objects (wsh/lookup-page-objects state)
+            ids     (->> ids (filter (partial ctl/layout? objects)))]
+        (if (d/not-empty? ids)
+          (let [modif-tree (dwm/create-modif-tree ids (ctm/reflow-modifiers))]
+            (rx/of (dwm/set-modifiers modif-tree)
+                   (dwm/apply-modifiers)))
+          (rx/empty))))))

frontend/src/app/main/data/workspace/shortcuts.cljs

@@ -15,6 +15,8 @@
    [app.main.data.workspace.drawing :as dwd]
    [app.main.data.workspace.layers :as dwly]
    [app.main.data.workspace.libraries :as dwl]
+   [app.main.data.workspace.shape-layout :as dwsl]
+   [app.main.data.workspace.shapes :as dws]
    [app.main.data.workspace.texts :as dwtxt]
    [app.main.data.workspace.transforms :as dwt]
    [app.main.data.workspace.undo :as dwu]
@@ -204,7 +206,12 @@
    :artboard-selection   {:tooltip (ds/meta (ds/alt "G"))
                           :command (ds/c-mod "alt+g")
                           :subsections [:modify-layers]
-                          :fn #(st/emit! (dw/create-artboard-from-selection))}
+                          :fn #(st/emit! (dws/create-artboard-from-selection))}
+
+   :toogle-layout-flex   {:tooltip (ds/shift "F")
+                          :command "shift+f"
+                          :subsections [:modify-layers]
+                          :fn #(st/emit! (dwsl/toogle-layout-flex))}
 
    ;; TOOLS
 
@@ -382,7 +389,7 @@
    :show-shortcuts       {:tooltip "?"
                           :command "?"
                           :subsections [:main-menu]
-                          :fn #(st/emit! (toggle-layout-flag :shortcuts)) }
+                          :fn #(st/emit! (toggle-layout-flag :shortcuts))}
 
    ;; PANELS
 

frontend/src/app/main/data/workspace/state_helpers.cljs

@@ -127,15 +127,15 @@
 (defn select-bool-children
   [parent-id state]
   (let [objects   (lookup-page-objects state)
-        selected  (lookup-selected-raw state)
         modifiers (:workspace-modifiers state)
-
         children-ids (cph/get-children-ids objects parent-id)
-        selected-children (into [] (filter selected) children-ids)
-
-        modifiers    (select-keys modifiers selected-children)
-        children     (select-keys objects children-ids)]
+        children
+        (-> (select-keys objects children-ids)
+            (d/update-vals
+             (fn [child]
+               (cond-> child
+                 (contains? modifiers (:id child))
+                 (gsh/transform-shape (get-in modifiers [(:id child) :modifiers]))))))]
 
     (as-> children $
-      (gsh/merge-modifiers $ modifiers)
       (d/mapm (set-content-modifiers state) $))))

frontend/src/app/main/data/workspace/texts.cljs

@@ -13,6 +13,7 @@
    [app.common.math :as mth]
    [app.common.pages.helpers :as cph]
    [app.common.text :as txt]
+   [app.common.types.modifiers :as ctm]
    [app.common.uuid :as uuid]
    [app.main.data.workspace.changes :as dch]
    [app.main.data.workspace.common :as dwc]
@@ -318,18 +319,14 @@
     (watch [_ _ _]
       (letfn [(update-fn [shape]
                 (let [{:keys [selrect grow-type]} shape
-                      {shape-width :width shape-height :height} selrect
-                      modifier-width (gsh/resize-modifiers shape :width new-width)
-                      modifier-height (gsh/resize-modifiers shape :height new-height)]
+                      {shape-width :width shape-height :height} selrect]
                   (cond-> shape
                     (and (not-changed? shape-width new-width) (= grow-type :auto-width))
-                    (-> (assoc :modifiers modifier-width)
-                        (gsh/transform-shape))
+                    (gsh/transform-shape (ctm/change-dimensions-modifiers shape :width new-width))
 
                     (and (not-changed? shape-height new-height)
                          (or (= grow-type :auto-height) (= grow-type :auto-width)))
-                    (-> (assoc :modifiers modifier-height)
-                        (gsh/transform-shape)))))]
+                    (gsh/transform-shape (ctm/change-dimensions-modifiers shape :height new-height)))))]
 
         (rx/of (dch/update-shapes [id] update-fn {:reg-objects? true :save-undo? false}))))))
 
@@ -346,18 +343,13 @@
 (defn apply-text-modifier
   [shape {:keys [width height position-data]}]
 
-  (let [modifier-width (when width (gsh/resize-modifiers shape :width width))
-        modifier-height (when height (gsh/resize-modifiers shape :height height))
-
-        new-shape
+  (let [new-shape
         (cond-> shape
-          (some? modifier-width)
-          (-> (assoc :modifiers modifier-width)
-              (gsh/transform-shape))
+          (some? width)
+          (gsh/transform-shape (ctm/change-dimensions-modifiers shape :width width))
 
-          (some? modifier-height)
-          (-> (assoc :modifiers modifier-height)
-              (gsh/transform-shape))
+          (some? height)
+          (gsh/transform-shape (ctm/change-dimensions-modifiers shape :height height))
 
           (some? position-data)
           (assoc :position-data position-data))
@@ -402,7 +394,7 @@
     ptk/UpdateEvent
     (update [_ state]
       (let [ids (keys (::update-position-data state))]
-        (update state :workspace-text-modifiers #(apply dissoc % ids))))
+        (update state :workspace-text-modifier #(apply dissoc % ids))))
 
     ptk/WatchEvent
     (watch [_ state _]

frontend/src/app/main/data/workspace/transforms.cljs

@@ -11,16 +11,17 @@
    [app.common.geom.matrix :as gmt]
    [app.common.geom.point :as gpt]
    [app.common.geom.shapes :as gsh]
+   [app.common.geom.shapes.flex-layout :as gsl]
    [app.common.math :as mth]
    [app.common.pages.changes-builder :as pcb]
-   [app.common.pages.common :as cpc]
    [app.common.pages.helpers :as cph]
    [app.common.spec :as us]
+   [app.common.types.modifiers :as ctm]
    [app.common.types.shape-tree :as ctst]
+   [app.common.types.shape.layout :as ctl]
    [app.main.data.workspace.changes :as dch]
    [app.main.data.workspace.collapse :as dwc]
-   [app.main.data.workspace.comments :as-alias dwcm]
-   [app.main.data.workspace.guides :as-alias dwg]
+   [app.main.data.workspace.modifiers :as dwm]
    [app.main.data.workspace.selection :as dws]
    [app.main.data.workspace.state-helpers :as wsh]
    [app.main.data.workspace.undo :as dwu]
@@ -95,233 +96,12 @@
       (update state :workspace-local dissoc :transform))))
 
 
-;; -- Temporary modifiers -------------------------------------------
-
-;; During an interactive transformation of shapes (e.g. when resizing or rotating
-;; a group with the mouse), there are a lot of objects that need to be modified
-;; (in this case, the group and all its children).
-;;
-;; To avoid updating the shapes theirselves, and forcing redraw of all components
-;; that depend on the "objects" global state, we set a "modifiers" structure, with
-;; the changes that need to be applied, and store it in :workspace-modifiers global
-;; variable. The viewport reads this and merges it into the objects list it uses to
-;; paint the viewport content, redrawing only the objects that have new modifiers.
-;;
-;; When the interaction is finished (e.g. user releases mouse button), the
-;; apply-modifiers event is done, that consolidates all modifiers into the base
-;; geometric attributes of the shapes.
-
-(declare clear-local-transform)
-
-(declare get-ignore-tree)
-
-(defn set-modifiers
-  ([ids]
-   (set-modifiers ids nil false))
-
-  ([ids modifiers]
-   (set-modifiers ids modifiers false))
-
-  ([ids modifiers ignore-constraints]
-   (set-modifiers ids modifiers ignore-constraints false))
-
-  ([ids modifiers ignore-constraints ignore-snap-pixel]
-   (us/verify (s/coll-of uuid?) ids)
-   (ptk/reify ::set-modifiers
-     ptk/UpdateEvent
-     (update [_ state]
-       (let [objects     (wsh/lookup-page-objects state)
-             ids         (into #{} (remove #(get-in objects [% :blocked] false)) ids)
-
-             snap-pixel? (and (not ignore-snap-pixel)
-                              (contains? (:workspace-layout state) :snap-pixel-grid))
-
-             modif-tree
-             (gsh/set-objects-modifiers ids objects (constantly modifiers) ignore-constraints snap-pixel?)]
-
-         (update state :workspace-modifiers merge modif-tree))))))
-
-;; Rotation use different algorithm to calculate children modifiers (and do not use child constraints).
-(defn- set-rotation-modifiers
-  ([angle shapes]
-   (set-rotation-modifiers angle shapes (-> shapes gsh/selection-rect gsh/center-selrect)))
-
-  ([angle shapes center]
-   (ptk/reify ::set-rotation-modifiers
-     ptk/UpdateEvent
-     (update [_ state]
-       (let [objects     (wsh/lookup-page-objects state)
-             ids
-             (->> shapes
-                  (remove #(get % :blocked false))
-                  (mapcat #(cph/get-children objects (:id %)))
-                  (concat shapes)
-                  (filter #((cpc/editable-attrs (:type %)) :rotation))
-                  (map :id))
-
-             get-modifier
-             (fn [shape]
-               (gsh/rotation-modifiers shape center angle))
-
-             modif-tree
-             (gsh/set-objects-modifiers ids objects get-modifier false false)]
-
-         (update state :workspace-modifiers merge modif-tree))))))
-
-(defn- update-grow-type
-  [shape old-shape]
-  (let [auto-width? (= :auto-width (:grow-type shape))
-        auto-height? (= :auto-height (:grow-type shape))
-
-        changed-width? (not (mth/close? (:width shape) (:width old-shape)))
-        changed-height? (not (mth/close? (:height shape) (:height old-shape)))
-
-        change-to-fixed? (or (and auto-width? (or changed-height? changed-width?))
-                             (and auto-height? changed-height?))]
-    (cond-> shape
-      change-to-fixed?
-      (assoc :grow-type :fixed))))
-
-(defn apply-modifiers
-  ([]
-   (apply-modifiers nil))
-
-  ([{:keys [undo-transation?] :or {undo-transation? true}}]
-   (ptk/reify ::apply-modifiers
-     ptk/WatchEvent
-     (watch [_ state _]
-       (let [objects           (wsh/lookup-page-objects state)
-             object-modifiers  (get state :workspace-modifiers)
-
-             ids (keys object-modifiers)
-             ids-with-children (into (vec ids) (mapcat #(cph/get-children-ids objects %)) ids)
-
-             shapes            (map (d/getf objects) ids)
-             ignore-tree       (->> (map #(get-ignore-tree object-modifiers objects %) shapes)
-                                    (reduce merge {}))]
-
-         (rx/concat
-          (if undo-transation?
-            (rx/of (dwu/start-undo-transaction))
-            (rx/empty))
-          (rx/of (ptk/event ::dwg/move-frame-guides ids-with-children)
-                 (ptk/event ::dwcm/move-frame-comment-threads ids-with-children)
-                 (dch/update-shapes
-                  ids
-                  (fn [shape]
-                    (let [modif (get object-modifiers (:id shape))
-                          text-shape? (cph/text-shape? shape)]
-                      (-> shape
-                          (merge modif)
-                          (gsh/transform-shape)
-                          (cond-> text-shape?
-                            (update-grow-type shape)))))
-                  {:reg-objects? true
-                   :ignore-tree ignore-tree
-                   ;; Attributes that can change in the transform. This way we don't have to check
-                   ;; all the attributes
-                   :attrs [:selrect
-                           :points
-                           :x
-                           :y
-                           :width
-                           :height
-                           :content
-                           :transform
-                           :transform-inverse
-                           :rotation
-                           :position-data
-                           :flip-x
-                           :flip-y
-                           :grow-type]})
-                 (clear-local-transform))
-          (if undo-transation?
-            (rx/of (dwu/commit-undo-transaction))
-            (rx/empty))))))))
-
-(defn- check-delta
-  "If the shape is a component instance, check its relative position respect the
-  root of the component, and see if it changes after applying a transformation."
-  [shape root transformed-shape transformed-root objects modif-tree]
-  (let [root
-        (cond
-          (:component-root? shape)
-          shape
-
-          (nil? root)
-          (cph/get-root-shape objects shape)
-
-          :else root)
-
-        transformed-root
-        (cond
-          (:component-root? transformed-shape)
-          transformed-shape
-
-          (nil? transformed-root)
-          (as-> (cph/get-root-shape objects transformed-shape) $
-            (gsh/transform-shape (merge $ (get modif-tree (:id $)))))
-
-          :else transformed-root)
-
-        shape-delta
-        (when root
-          (gpt/point (- (gsh/left-bound shape) (gsh/left-bound root))
-                     (- (gsh/top-bound shape) (gsh/top-bound root))))
-
-        transformed-shape-delta
-        (when transformed-root
-          (gpt/point (- (gsh/left-bound transformed-shape) (gsh/left-bound transformed-root))
-                     (- (gsh/top-bound transformed-shape) (gsh/top-bound transformed-root))))
-
-        ;; There are cases in that the coordinates change slightly (e.g. when
-        ;; rounding to pixel, or when recalculating text positions in different
-        ;; zoom levels). To take this into account, we ignore movements smaller
-        ;; than 1 pixel.
-        distance (if (and shape-delta transformed-shape-delta)
-                   (gpt/distance-vector shape-delta transformed-shape-delta)
-                   (gpt/point 0 0))
-
-        ignore-geometry? (and (< (:x distance) 1) (< (:y distance) 1))]
-
-    [root transformed-root ignore-geometry?]))
-
-(defn- get-ignore-tree
-  "Retrieves a map with the flag `ignore-geometry?` given a tree of modifiers"
-  ([modif-tree objects shape]
-   (get-ignore-tree modif-tree objects shape nil nil {}))
-
-  ([modif-tree objects shape root transformed-root ignore-tree]
-   (let [children (map (d/getf objects) (:shapes shape))
-
-         shape-id (:id shape)
-         transformed-shape (gsh/transform-shape (merge shape (get modif-tree shape-id)))
-
-         [root transformed-root ignore-geometry?]
-         (check-delta shape root transformed-shape transformed-root objects modif-tree)
-
-         ignore-tree (assoc ignore-tree shape-id ignore-geometry?)
-
-         set-child
-         (fn [ignore-tree child]
-           (get-ignore-tree modif-tree objects child root transformed-root ignore-tree))]
-
-     (reduce set-child ignore-tree children))))
-
-(defn- clear-local-transform []
-  (ptk/reify ::clear-local-transform
-    ptk/UpdateEvent
-    (update [_ state]
-      (-> state
-          (dissoc :workspace-modifiers)
-          (dissoc ::current-move-selected)))))
-
 ;; -- Resize --------------------------------------------------------
 
 (defn start-resize
   "Enter mouse resize mode, until mouse button is released."
   [handler ids shape]
-  (letfn [(resize [shape initial layout [point lock? center? point-snap]]
+  (letfn [(resize [shape objects initial layout [point lock? center? point-snap]]
             (let [{:keys [width height]} (:selrect shape)
                   {:keys [rotation]} shape
 
@@ -331,10 +111,10 @@
 
                   rotation (or rotation 0)
 
-                  initial (gsh/transform-point-center initial shape-center shape-transform-inverse)
+                  initial (gmt/transform-point-center initial shape-center shape-transform-inverse)
                   initial (fix-init-point initial handler shape)
 
-                  point (gsh/transform-point-center (if (= rotation 0) point-snap point)
+                  point (gmt/transform-point-center (if (= rotation 0) point-snap point)
                                                     shape-center shape-transform-inverse)
 
                   shapev (-> (gpt/point width height))
@@ -381,20 +161,46 @@
                         (gpt/transform shape-transform)))
 
                   resize-origin
-                  (cond-> (gsh/transform-point-center handler-origin shape-center shape-transform)
+                  (cond-> (gmt/transform-point-center handler-origin shape-center shape-transform)
                     (some? displacement)
                     (gpt/add displacement))
 
-                  displacement (when (some? displacement)
-                                 (gmt/translate-matrix displacement))]
+                  ;; When the horizontal/vertical scale a flex children with auto/fill
+                  ;; we change it too fixed
+                  layout? (ctl/layout? shape)
+                  layout-child? (ctl/layout-child? objects shape)
+                  auto-width? (ctl/auto-width? shape)
+                  fill-width? (ctl/fill-width? shape)
+                  auto-height? (ctl/auto-height? shape)
+                  fill-height? (ctl/fill-height? shape)
 
-              (rx/of (set-modifiers ids
-                                    {:displacement displacement
-                                     :resize-vector scalev
-                                     :resize-origin resize-origin
-                                     :resize-transform shape-transform
-                                     :resize-scale-text scale-text
-                                     :resize-transform-inverse shape-transform-inverse}))))
+                  set-fix-width?
+                  (and (not (mth/close? (:x scalev) 1))
+                       (or (and (or layout? layout-child?) auto-width?)
+                           (and layout-child? fill-width?)))
+
+                  set-fix-height?
+                  (and (not (mth/close? (:y scalev) 1))
+                       (or (and (or layout? layout-child?) auto-height?)
+                           (and layout-child? fill-height?)))
+
+                  modifiers
+                  (-> (ctm/empty)
+                      (cond-> displacement
+                        (ctm/move displacement))
+                      (ctm/resize scalev resize-origin shape-transform shape-transform-inverse)
+
+                      (cond-> set-fix-width?
+                        (ctm/change-property :layout-item-h-sizing :fix))
+
+                      (cond-> set-fix-height?
+                        (ctm/change-property :layout-item-v-sizing :fix))
+
+                      (cond-> scale-text
+                        (ctm/scale-content (:x scalev))))
+
+                  modif-tree (dwm/create-modif-tree ids modifiers)]
+              (rx/of (dwm/set-modifiers modif-tree))))
 
           ;; Unifies the instantaneous proportion lock modifier
           ;; activated by Shift key and the shapes own proportion
@@ -418,6 +224,7 @@
               zoom    (get-in state [:workspace-local :zoom] 1)
               objects (wsh/lookup-page-objects state page-id)
               resizing-shapes (map #(get objects %) ids)]
+
           (rx/concat
            (->> ms/mouse-position
                 (rx/with-latest-from ms/mouse-position-shift ms/mouse-position-alt)
@@ -425,9 +232,9 @@
                 (rx/switch-map (fn [[point _ _ :as current]]
                                  (->> (snap/closest-snap-point page-id resizing-shapes objects layout zoom focus point)
                                       (rx/map #(conj current %)))))
-                (rx/mapcat (partial resize shape initial-position layout))
+                (rx/mapcat (partial resize shape objects initial-position layout))
                 (rx/take-until stoper))
-           (rx/of (apply-modifiers)
+           (rx/of (dwm/apply-modifiers)
                   (finish-transform))))))))
 
 (defn update-dimensions
@@ -444,16 +251,17 @@
             snap-pixel? (and (contains? (:workspace-layout state) :snap-pixel-grid)
                              (int? value))
             get-modifier
-            (fn [shape] (gsh/resize-modifiers shape attr value))
+            (fn [shape] (ctm/change-dimensions-modifiers shape attr value))
 
             modif-tree
-            (gsh/set-objects-modifiers ids objects get-modifier false snap-pixel?)]
+            (-> (dwm/build-modif-tree ids objects get-modifier)
+                (gsh/set-objects-modifiers objects false snap-pixel?))]
 
         (assoc state :workspace-modifiers modif-tree)))
 
     ptk/WatchEvent
     (watch [_ _ _]
-      (rx/of (apply-modifiers)))))
+      (rx/of (dwm/apply-modifiers)))))
 
 (defn change-orientation
   "Change orientation of shapes, from the sidebar options form.
@@ -468,16 +276,17 @@
             snap-pixel? (contains? (get state :workspace-layout) :snap-pixel-grid)
 
             get-modifier
-            (fn [shape] (gsh/change-orientation-modifiers shape orientation))
+            (fn [shape] (ctm/change-orientation-modifiers shape orientation))
 
             modif-tree
-            (gsh/set-objects-modifiers ids objects get-modifier false snap-pixel?)]
+            (-> (dwm/build-modif-tree ids objects get-modifier)
+                (gsh/set-objects-modifiers objects false snap-pixel?))]
 
         (assoc state :workspace-modifiers modif-tree)))
 
     ptk/WatchEvent
     (watch [_ _ _]
-      (rx/of (apply-modifiers)))))
+      (rx/of (dwm/apply-modifiers)))))
 
 ;; -- Rotate --------------------------------------------------------
 
@@ -518,9 +327,9 @@
               (rx/map
                (fn [[[pos mod?] shift?]]
                  (let [delta-angle (calculate-angle pos mod? shift?)]
-                   (set-rotation-modifiers delta-angle shapes group-center))))
+                   (dwm/set-rotation-modifiers delta-angle shapes group-center))))
               (rx/take-until stoper))
-         (rx/of (apply-modifiers)
+         (rx/of (dwm/apply-modifiers)
                 (finish-transform)))))))
 
 (defn increase-rotation
@@ -534,17 +343,17 @@
             objects (wsh/lookup-page-objects state page-id)
             rotate-shape (fn [shape]
                            (let [delta (- rotation (:rotation shape))]
-                             (set-rotation-modifiers delta [shape])))]
+                             (dwm/set-rotation-modifiers delta [shape])))]
         (rx/concat
          (rx/from (->> ids (map #(get objects %)) (map rotate-shape)))
-         (rx/of (apply-modifiers)))))))
+         (rx/of (dwm/apply-modifiers)))))))
 
 
 ;; -- Move ----------------------------------------------------------
 
 (declare start-move)
 (declare start-move-duplicate)
-(declare calculate-frame-for-move)
+(declare move-shapes-to-frame)
 (declare get-displacement)
 
 (defn start-move-selected
@@ -626,13 +435,18 @@
              zoom    (get-in state [:workspace-local :zoom] 1)
              focus   (:workspace-focus-selected state)
 
-             fix-axis (fn [[position shift?]]
-                        (let [delta (gpt/to-vec from-position position)]
-                          (if shift?
-                            (if (> (mth/abs (:x delta)) (mth/abs (:y delta)))
-                              (gpt/point (:x delta) 0)
-                              (gpt/point 0 (:y delta)))
-                            delta)))
+             exclude-frames (into #{}
+                                  (filter (partial cph/frame-shape? objects))
+                                  (cph/selected-with-children objects selected))
+
+             fix-axis
+             (fn [[position shift?]]
+               (let [delta (gpt/to-vec from-position position)]
+                 (if shift?
+                   (if (> (mth/abs (:x delta)) (mth/abs (:y delta)))
+                     (gpt/point (:x delta) 0)
+                     (gpt/point 0 (:y delta)))
+                   delta)))
 
              position (->> ms/mouse-position
                            (rx/with-latest-from ms/mouse-position-shift)
@@ -649,21 +463,43 @@
                                       (rx/map #(vector pos %)))))))]
          (if (empty? shapes)
            (rx/of (finish-transform))
-           (rx/concat
-            (->> position
-                 ;; We ask for the snap position but we continue even if the result is not available
-                 (rx/with-latest vector snap-delta)
-                 ;; We try to use the previous snap so we don't have to wait for the result of the new
-                 (rx/map snap/correct-snap-point)
-                 (rx/map #(hash-map :displacement (gmt/translate-matrix %)))
-                 (rx/map (partial set-modifiers ids))
-                 (rx/take-until stopper))
+           (let [move-stream
+                 (->> position
+                      ;; We ask for the snap position but we continue even if the result is not available
+                      (rx/with-latest vector snap-delta)
 
-            (rx/of (dwu/start-undo-transaction)
-                   (calculate-frame-for-move ids)
-                   (apply-modifiers {:undo-transation? false})
-                   (finish-transform)
-                   (dwu/commit-undo-transaction)))))))))
+                      ;; We try to use the previous snap so we don't have to wait for the result of the new
+                      (rx/map snap/correct-snap-point)
+
+                      (rx/map
+                       (fn [move-vector]
+                         (let [position     (gpt/add from-position move-vector)
+                               target-frame (ctst/top-nested-frame objects position exclude-frames)
+                               layout?      (ctl/layout? objects target-frame)
+                               drop-index   (when layout? (gsl/get-drop-index target-frame objects position))]
+                           [move-vector target-frame drop-index])))
+
+                      (rx/take-until stopper))]
+
+             (rx/merge
+              ;; Temporary modifiers stream
+              (->> move-stream
+                   (rx/map
+                    (fn [[move-vector target-frame drop-index]]
+                      (-> (dwm/create-modif-tree ids (ctm/move-modifiers move-vector))
+                          (dwm/build-change-frame-modifiers objects selected target-frame drop-index)
+                          (dwm/set-modifiers)))))
+
+              ;; Last event will write the modifiers creating the changes
+              (->> move-stream
+                   (rx/last)
+                   (rx/mapcat
+                    (fn [[_ target-frame drop-index]]
+                      (rx/of (dwu/start-undo-transaction)
+                             (move-shapes-to-frame ids target-frame drop-index)
+                             (dwm/apply-modifiers {:undo-transation? false})
+                             (finish-transform)
+                             (dwu/commit-undo-transaction)))))))))))))
 
 (s/def ::direction #{:up :down :right :left})
 
@@ -704,12 +540,12 @@
              (rx/merge
               (->> move-events
                    (rx/scan #(gpt/add %1 mov-vec) (gpt/point 0 0))
-                   (rx/map #(hash-map :displacement (gmt/translate-matrix %)))
-                   (rx/map (partial set-modifiers selected))
+                   (rx/map #(dwm/create-modif-tree selected (ctm/move-modifiers %)))
+                   (rx/map (partial dwm/set-modifiers))
                    (rx/take-until stopper))
               (rx/of (move-selected direction shift?)))
 
-             (rx/of (apply-modifiers)
+             (rx/of (dwm/apply-modifiers)
                     (finish-transform))))
           (rx/empty))))))
 
@@ -736,34 +572,39 @@
             pos  (gpt/point (or (:x position) (:x bbox))
                             (or (:y position) (:y bbox)))
             delta (gpt/subtract pos cpos)
-            displ   (gmt/translate-matrix delta)]
 
-        (rx/of (set-modifiers [id] {:displacement displ} false true)
-               (apply-modifiers [id]))))))
+            modif-tree (dwm/create-modif-tree [id] (ctm/move-modifiers delta))]
 
-(defn- calculate-frame-for-move
-  [ids]
-  (ptk/reify ::calculate-frame-for-move
+        (rx/of (dwm/set-modifiers modif-tree)
+               (dwm/apply-modifiers))))))
+
+(defn- move-shapes-to-frame
+  [ids frame-id drop-index]
+  (ptk/reify ::move-shapes-to-frame
     ptk/WatchEvent
     (watch [it state _]
-      (let [position @ms/mouse-position
-            page-id  (:current-page-id state)
+      (let [page-id  (:current-page-id state)
             objects  (wsh/lookup-page-objects state page-id)
-            frame-id (ctst/top-nested-frame objects position)
+            layout?  (get-in objects [frame-id :layout])
             lookup   (d/getf objects)
 
+            shapes (->> ids (cph/clean-loops objects) (keep lookup))
+
             moving-shapes
-            (->> ids
-                 (cph/clean-loops objects)
-                 (keep lookup)
-                 (remove #(= (:frame-id %) frame-id)))
+            (cond->> shapes
+              (not layout?)
+              (remove #(= (:frame-id %) frame-id))
+
+              layout?
+              (remove #(and (= (:frame-id %) frame-id)
+                            (not= (:parent-id %) frame-id))))
 
             changes
             (-> (pcb/empty-changes it page-id)
                 (pcb/with-objects objects)
-                (pcb/change-parent frame-id moving-shapes))]
+                (pcb/change-parent frame-id moving-shapes drop-index))]
 
-        (when-not (empty? changes)
+        (when (and (some? frame-id) (d/not-empty? changes))
           (rx/of (dch/commit-changes changes)
                  (dwc/expand-collapse frame-id)))))))
 
@@ -787,15 +628,17 @@
       (let [objects  (wsh/lookup-page-objects state)
             selected (wsh/lookup-selected state {:omit-blocked? true})
             shapes   (map #(get objects %) selected)
-            selrect  (gsh/selection-rect (->> shapes (map gsh/transform-shape)))
-            origin   (gpt/point (:x selrect) (+ (:y selrect) (/ (:height selrect) 2)))]
+            selrect  (gsh/selection-rect shapes)
+            origin   (gpt/point (:x selrect) (+ (:y selrect) (/ (:height selrect) 2)))
 
-        (rx/of (set-modifiers selected
-                              {:resize-vector (gpt/point -1.0 1.0)
-                               :resize-origin origin
-                               :displacement (gmt/translate-matrix (gpt/point (- (:width selrect)) 0))}
-                              true)
-               (apply-modifiers))))))
+            modif-tree (dwm/create-modif-tree
+                        selected
+                        (-> (ctm/empty)
+                            (ctm/resize (gpt/point -1.0 1.0) origin)
+                            (ctm/move (gpt/point (:width selrect) 0))))]
+
+        (rx/of (dwm/set-modifiers modif-tree true)
+               (dwm/apply-modifiers))))))
 
 (defn flip-vertical-selected []
   (ptk/reify ::flip-vertical-selected
@@ -804,12 +647,14 @@
       (let [objects  (wsh/lookup-page-objects state)
             selected (wsh/lookup-selected state {:omit-blocked? true})
             shapes   (map #(get objects %) selected)
-            selrect  (gsh/selection-rect (->> shapes (map gsh/transform-shape)))
-            origin   (gpt/point (+ (:x selrect) (/ (:width selrect) 2)) (:y selrect))]
+            selrect  (gsh/selection-rect shapes)
+            origin   (gpt/point (+ (:x selrect) (/ (:width selrect) 2)) (:y selrect))
 
-        (rx/of (set-modifiers selected
-                              {:resize-vector (gpt/point 1.0 -1.0)
-                               :resize-origin origin
-                               :displacement (gmt/translate-matrix (gpt/point 0 (- (:height selrect))))}
-                              true)
-               (apply-modifiers))))))
+            modif-tree (dwm/create-modif-tree
+                        selected
+                        (-> (ctm/empty)
+                            (ctm/resize (gpt/point 1.0 -1.0) origin)
+                            (ctm/move (gpt/point 0 (:height selrect)))))]
+
+        (rx/of (dwm/set-modifiers modif-tree true)
+               (dwm/apply-modifiers))))))

frontend/src/app/main/refs.cljs

@@ -11,6 +11,7 @@
    [app.common.data.macros :as dm]
    [app.common.pages.helpers :as cph]
    [app.common.types.shape-tree :as ctt]
+   [app.common.types.shape.layout :as ctl]
    [app.main.data.workspace.state-helpers :as wsh]
    [app.main.store :as st]
    [okulary.core :as l]))
@@ -265,6 +266,14 @@
   [ids]
   (l/derived #(into [] (keep (d/getf %)) ids) workspace-page-objects =))
 
+(defn parents-by-ids
+  [ids]
+  (l/derived
+   (fn [objects]
+     (let [parent-ids (into #{} (keep #(get-in objects [% :parent-id])) ids)]
+       (into [] (keep #(get objects %)) parent-ids)))
+   workspace-page-objects =))
+
 (defn children-objects
   [id]
   (l/derived
@@ -434,7 +443,8 @@
   (l/derived
    (fn [objects]
      (->> ids
-          (some #(-> (cph/get-parent objects %) :layout))))
+          (map (d/getf objects))
+          (some (partial ctl/layout-child? objects))))
    workspace-page-objects))
 
 (defn get-flex-child-viewer?
@@ -442,7 +452,10 @@
   (l/derived
    (fn [state]
      (let [objects (wsh/lookup-viewer-objects state page-id)]
-       (filterv #(= :flex (:layout (cph/get-parent objects %))) ids)))
+       (into []
+             (comp (filter (partial ctl/layout-child? objects))
+                   (map (d/getf objects)))
+             ids)))
    st/state =))
 
 (def colorpicker

frontend/src/app/main/render.cljs

@@ -15,12 +15,12 @@
    ["react-dom/server" :as rds]
    [app.common.colors :as clr]
    [app.common.data.macros :as dm]
-   [app.common.geom.matrix :as gmt]
    [app.common.geom.point :as gpt]
    [app.common.geom.shapes :as gsh]
    [app.common.geom.shapes.bounds :as gsb]
    [app.common.math :as mth]
    [app.common.pages.helpers :as cph]
+   [app.common.types.modifiers :as ctm]
    [app.common.types.shape-tree :as ctst]
    [app.config :as cfg]
    [app.main.fonts :as fonts]
@@ -81,8 +81,7 @@
       [{:keys [shape] :as props}]
 
       (let [render-thumbnails? (mf/use-ctx muc/render-thumbnails)
-            childs (mapv #(get objects %) (:shapes shape))
-            shape  (gsh/transform-shape shape)]
+            childs (mapv #(get objects %) (:shapes shape))]
         (if (and render-thumbnails? (some? (:thumbnail shape)))
           [:& frame/frame-thumbnail {:shape shape :bounds (:children-bounds shape)}]
           [:& frame-shape {:shape shape :childs childs}])))))
@@ -135,8 +134,7 @@
           bool-wrapper    (mf/use-memo (mf/deps objects) #(bool-wrapper-factory objects))
           frame-wrapper   (mf/use-memo (mf/deps objects) #(frame-wrapper-factory objects))]
       (when (and shape (not (:hidden shape)))
-        (let [shape (gsh/transform-shape shape)
-              opts #js {:shape shape}
+        (let [opts #js {:shape shape}
               svg-raw? (= :svg-raw (:type shape))]
           (if-not svg-raw?
             [:> shape-container {:shape shape}
@@ -166,8 +164,7 @@
   [objects object]
   (let [shapes   (cph/get-immediate-children objects)
         srect    (gsh/selection-rect shapes)
-        object   (merge object (select-keys srect [:x :y :width :height]))
-        object   (gsh/transform-shape object)]
+        object   (merge object (select-keys srect [:x :y :width :height]))]
     (assoc object :fill-color "#f0f0f0")))
 
 (defn adapt-objects-for-shape
@@ -180,14 +177,12 @@
         ;; Replace the previous object with the new one
         objects  (assoc objects object-id object)
 
-        modifier (-> (gpt/point (:x object) (:y object))
-                     (gpt/negate)
-                     (gmt/translate-matrix))
+        vector (-> (gpt/point (:x object) (:y object))
+                   (gpt/negate))
 
         mod-ids  (cons object-id (cph/get-children-ids objects object-id))
-        updt-fn  #(-> %1
-                      (assoc-in [%2 :modifiers :displacement] modifier)
-                      (update %2 gsh/transform-shape))]
+
+        updt-fn  #(update %1 %2 gsh/transform-shape (ctm/move-modifiers vector))]
 
     (reduce updt-fn objects mod-ids)))
 
@@ -247,24 +242,21 @@
         bounds2 (gsb/get-object-bounds objects (dissoc frame :shadow :blur))
 
         delta-bounds (gpt/point (:x bounds) (:y bounds))
-
-        modifier (gmt/translate-matrix (gpt/negate delta-bounds))
+        vector (gpt/negate delta-bounds)
 
         children-ids
         (cph/get-children-ids objects frame-id)
 
         objects
-        (mf/with-memo [frame-id objects modifier]
-          (let [update-fn #(assoc-in %1 [%2 :modifiers :displacement] modifier)]
+        (mf/with-memo [frame-id objects vector]
+          (let [update-fn #(update %1 %2 gsh/transform-shape (ctm/move-modifiers vector))]
             (->> children-ids
                  (into [frame-id])
                  (reduce update-fn objects))))
 
         frame
-        (mf/with-memo [modifier]
-          (-> frame
-              (assoc-in [:modifiers :displacement] modifier)
-              (gsh/transform-shape)))
+        (mf/with-memo [vector]
+          (gsh/transform-shape frame (ctm/move-modifiers vector)))
 
         frame
         (cond-> frame
@@ -293,7 +285,6 @@
             :xmlnsXlink "http://www.w3.org/1999/xlink"
             :xmlns:penpot (when include-metadata? "https://penpot.app/xmlns")
             :fill "none"}
-
       [:& shape-wrapper {:shape frame}]]]))
 
 
@@ -305,22 +296,20 @@
   (let [group-id (:id group)
         include-metadata? (mf/use-ctx export/include-metadata-ctx)
 
-        modifier
+        vector
         (mf/use-memo
          (mf/deps (:x group) (:y group))
          (fn []
            (-> (gpt/point (:x group) (:y group))
-               (gpt/negate)
-               (gmt/translate-matrix))))
+               (gpt/negate))))
 
         objects
         (mf/use-memo
-         (mf/deps modifier objects group-id)
+         (mf/deps vector objects group-id)
          (fn []
-           (let [modifier-ids (cons group-id (cph/get-children-ids objects group-id))
-                 update-fn    #(assoc-in %1 [%2 :modifiers :displacement] modifier)
-                 modifiers    (reduce update-fn {} modifier-ids)]
-             (gsh/merge-modifiers objects modifiers))))
+           (let [children-ids (cons group-id (cph/get-children-ids objects group-id))
+                 update-fn    #(update %1 %2 gsh/transform-shape (ctm/move-modifiers vector))]
+             (reduce update-fn objects children-ids))))
 
         group  (get objects group-id)
         width  (* (:width group) zoom)

frontend/src/app/main/snap.cljs

@@ -358,7 +358,8 @@
   "Snaps a position given an old snap to a different position. We use this to provide a temporal
   snap while the new is being processed."
   [[position [snap-pos snap-delta]]]
-  (if (some? snap-delta)
+  (if (nil? snap-delta)
+    position
     (let [dx (if (not= 0 (:x snap-delta))
                (- (+ (:x snap-pos) (:x snap-delta)) (:x position))
                0)
@@ -372,6 +373,4 @@
           dy (if (> (mth/abs dy) snap-accuracy) 0 dy)]
       (-> position
           (update :x + dx)
-          (update :y + dy)))
-
-    position))
+          (update :y + dy)))))

frontend/src/app/main/ui/components/shape_icon.cljs

@@ -6,6 +6,7 @@
 
 (ns app.main.ui.components.shape-icon
   (:require
+   [app.common.types.shape.layout :as ctl]
    [app.main.ui.icons :as i]
    [rumext.v2 :as mf]))
 
@@ -13,7 +14,15 @@
 (mf/defc element-icon
   [{:keys [shape main-instance?] :as props}]
   (case (:type shape)
-    :frame i/artboard
+    :frame (cond
+             (and (ctl/layout? shape) (ctl/col? shape))
+             i/layout-columns
+
+             (and (ctl/layout? shape) (ctl/row? shape))
+             i/layout-rows
+
+             :else
+             i/artboard)
     :image i/image
     :line i/line
     :circle i/circle

frontend/src/app/main/ui/icons.cljs

@@ -133,6 +133,8 @@
 (def justify-content-row-end (icon-xref :justify-content-row-end))
 (def justify-content-row-start (icon-xref :justify-content-row-start))
 (def layers (icon-xref :layers))
+(def layout-columns (icon-xref :layout-columns))
+(def layout-rows (icon-xref :layout-rows))
 (def letter-spacing (icon-xref :letter-spacing))
 (def libraries (icon-xref :libraries))
 (def library (icon-xref :library))

frontend/src/app/main/ui/shapes/bool.cljs

@@ -6,7 +6,6 @@
 
 (ns app.main.ui.shapes.bool
   (:require
-   [app.common.data :as d]
    [app.common.data.macros :as dm]
    [app.common.geom.shapes :as gsh]
    [app.main.ui.hooks :refer [use-equal-memo]]
@@ -34,9 +33,7 @@
                      (:bool-content shape)
 
                      (some? childs)
-                     (->> childs
-                          (d/mapm #(gsh/transform-shape %2))
-                          (gsh/calc-bool-content shape)))))]
+                     (gsh/calc-bool-content shape childs))))]
 
             [:*
              (when (some? bool-content)

frontend/src/app/main/ui/shapes/mask.cljs

@@ -7,6 +7,7 @@
 (ns app.main.ui.shapes.mask
   (:require
    [app.common.data :as d]
+   [app.common.data.macros :as dm]
    [app.common.geom.shapes :as gsh]
    [app.main.ui.context :as muc]
    [cuerdas.core :as str]
@@ -50,9 +51,7 @@
           render-id   (mf/use-ctx muc/render-id)
           svg-text?   (and (= :text (:type mask)) (some? (:position-data mask)))
 
-          mask-bb (-> (gsh/transform-shape mask)
-                      (:points))
-
+          mask-bb      (:points mask)
           mask-bb-rect (gsh/points->rect mask-bb)]
       [:defs
        [:filter {:id (filter-id render-id mask)}
@@ -68,7 +67,7 @@
        [:clipPath {:class "mask-clip-path"
                    :id (clip-id render-id mask)}
         [:polyline {:points (->> mask-bb
-                                 (map #(str (:x %) "," (:y %)))
+                                 (map #(dm/str (:x %) "," (:y %)))
                                  (str/join " "))}]]
 
        ;; When te shape is a text we pass to the shape the info and disable the filter.

frontend/src/app/main/ui/viewer/handoff/render.cljs

@@ -88,8 +88,6 @@
       [props]
       (let [shape (unchecked-get props "shape")
             childs (mapv #(get objects %) (:shapes shape))
-            shape  (gsh/transform-shape shape)
-
             props (-> (obj/create)
                       (obj/merge! props)
                       (obj/merge! #js {:shape shape
@@ -171,8 +169,7 @@
             (mf/use-memo (mf/deps objects)
                          #(svg-raw-container-factory objects))]
         (when (and shape (not (:hidden shape)))
-          (let [shape (-> (gsh/transform-shape shape)
-                          (gsh/translate-to-frame frame))
+          (let [shape (gsh/translate-to-frame shape frame)
                 opts #js {:shape shape
                           :frame frame}]
             (case (:type shape)

frontend/src/app/main/ui/viewer/handoff/selection_feedback.cljs

@@ -57,8 +57,6 @@
 
         shapes          (resolve-shapes objects [hover])
         hover-shape     (or (first shapes) frame)
-        hover-shape     (gsh/translate-to-frame hover-shape size)
-
         selected-shapes (resolve-shapes objects selected)
         selrect         (gsh/selection-rect selected-shapes)]
 

frontend/src/app/main/ui/viewer/interactions.cljs

@@ -8,9 +8,10 @@
   (:require
    [app.common.data :as d]
    [app.common.data.macros :as dm]
-   [app.common.geom.matrix :as gmt]
    [app.common.geom.point :as gpt]
+   [app.common.geom.shapes :as gsh]
    [app.common.pages.helpers :as cph]
+   [app.common.types.modifiers :as ctm]
    [app.common.types.page :as ctp]
    [app.common.uuid :as uuid]
    [app.main.data.comments :as dcm]
@@ -29,14 +30,10 @@
 
 (defn prepare-objects
   [frame size objects]
-  (let [
-        frame-id  (:id frame)
-        modifier  (-> (gpt/point (:x size) (:y size))
-                      (gpt/negate)
-                      (gmt/translate-matrix))
-
-        update-fn #(d/update-when %1 %2 assoc-in [:modifiers :displacement] modifier)]
-
+  (let [frame-id  (:id frame)
+        vector  (-> (gpt/point (:x size) (:y size))
+                    (gpt/negate))
+        update-fn #(d/update-when %1 %2 gsh/transform-shape (ctm/move-modifiers vector))]
     (->> (cph/get-children-ids objects frame-id)
          (into [frame-id])
          (reduce update-fn objects))))

frontend/src/app/main/ui/viewer/shapes.cljs

@@ -350,7 +350,6 @@
             [props]
             (let [shape     (obj/get props "shape")
                   childs    (mapv #(get objects %) (:shapes shape))
-                  shape     (gsh/transform-shape shape)
                   props     (obj/merge! #js {} props
                                         #js {:shape shape
                                              :childs childs
@@ -429,7 +428,8 @@
                   (mf/with-memo [objects]
                     (svg-raw-container-factory objects))]
               (when (and shape (not (:hidden shape)))
-                (let [shape (-> (gsh/transform-shape shape)
+          (let [shape (-> shape
+                          #_(gsh/transform-shape)
                                 (gsh/translate-to-frame frame))
 
                       opts #js {:shape shape

frontend/src/app/main/ui/workspace/context_menu.cljs

@@ -19,6 +19,8 @@
    [app.main.data.workspace.interactions :as dwi]
    [app.main.data.workspace.libraries :as dwl]
    [app.main.data.workspace.selection :as dws]
+   [app.main.data.workspace.shape-layout :as dwsl]
+   [app.main.data.workspace.shapes :as dwsh]
    [app.main.data.workspace.shortcuts :as sc]
    [app.main.features :as features]
    [app.main.refs :as refs]
@@ -212,7 +214,7 @@
 
   (let [multiple? (> (count shapes) 1)
         single?   (= (count shapes) 1)
-        do-create-artboard-from-selection #(st/emit! (dw/create-artboard-from-selection))
+        do-create-artboard-from-selection #(st/emit! (dwsh/create-artboard-from-selection))
 
         has-frame? (->> shapes (d/seek cph/frame-shape?))
         has-group? (->> shapes (d/seek cph/group-shape?))
@@ -364,6 +366,31 @@
 
           [:& menu-entry {:title (tr "workspace.shape.menu.flow-start")
                           :on-click do-add-flow}])))))
+(mf/defc context-menu-flex
+  [{:keys [shapes]}]
+  (let [single?            (= (count shapes) 1)
+        has-frame?         (->> shapes (d/seek cph/frame-shape?))
+        is-frame?          (and single? has-frame?)
+        is-flex-container? (and is-frame? (= :flex (:layout (first shapes))))
+        has-group?         (->> shapes (d/seek cph/group-shape?))
+        is-group?          (and single? has-group?)
+        ids                (->> shapes (map :id))
+        add-flex           #(st/emit! (dwsl/create-layout-from-selection :flex))
+        remove-flex        #(st/emit! (dwsl/remove-layout ids))]
+    (cond
+      (or (not single?) (and is-frame? (not is-flex-container?)) is-group?)
+      [:*
+       [:& menu-separator]
+       [:& menu-entry {:title (tr "workspace.shape.menu.add-flex")
+                       :shortcut (sc/get-tooltip :toogle-layout-flex)
+                       :on-click add-flex}]]
+      
+      is-flex-container?
+      [:*
+       [:& menu-separator]
+       [:& menu-entry {:title (tr "workspace.shape.menu.remove-flex")
+                       :shortcut (sc/get-tooltip :toogle-layout-flex)
+                       :on-click remove-flex}]])))
 
 (mf/defc context-menu-component
   [{:keys [shapes]}]
@@ -517,6 +544,7 @@
        [:> context-menu-path props]
        [:> context-menu-layer-options props]
        [:> context-menu-prototype props]
+       [:> context-menu-flex props]
        [:> context-menu-component props]
        [:> context-menu-delete props]])))
 

frontend/src/app/main/ui/workspace/shapes.cljs

@@ -12,7 +12,9 @@
   others are defined using a generic wrapper implemented in
   common."
   (:require
+   [app.common.data.macros :as dm]
    [app.common.pages.helpers :as cph]
+   [app.common.uuid :as uuid]
    [app.main.ui.context :as ctx]
    [app.main.ui.shapes.circle :as circle]
    [app.main.ui.shapes.image :as image]
@@ -55,33 +57,33 @@
          (mf/deps objects)
          #(cph/objects-by-frame objects))]
 
-    [:& (mf/provider ctx/active-frames) {:value active-frames}
-     ;; Render font faces only for shapes that are part of the root
-     ;; frame but don't belongs to any other frame.
-     (let [xform (comp
-                  (remove cph/frame-shape?)
-                  (mapcat #(cph/get-children-with-self objects (:id %))))]
-       [:& ff/fontfaces-style {:shapes (into [] xform shapes)}])
+    [:g {:id (dm/str "shape-" uuid/zero)}
+     [:& (mf/provider ctx/active-frames) {:value active-frames}
+      ;; Render font faces only for shapes that are part of the root
+      ;; frame but don't belongs to any other frame.
+      (let [xform (comp
+                   (remove cph/frame-shape?)
+                   (mapcat #(cph/get-children-with-self objects (:id %))))]
+        [:& ff/fontfaces-style {:shapes (into [] xform shapes)}])
 
-     (for [shape shapes]
-       (cond
-         (not (cph/frame-shape? shape))
-         [:& shape-wrapper
-          {:shape shape
-           :key (:id shape)}]
+      [:g.frame-children
+       (for [shape shapes]
+         [:g.ws-shape-wrapper {:key (:id shape)}
+          (cond
+            (not (cph/frame-shape? shape))
+            [:& shape-wrapper
+             {:shape shape}]
 
-         (cph/root-frame? shape)
-         [:& root-frame-wrapper
-          {:shape shape
-           :key (:id shape)
-           :objects (get frame-objects (:id shape))
-           :thumbnail? (not (contains? active-frames (:id shape)))}]
+            (cph/root-frame? shape)
+            [:& root-frame-wrapper
+             {:shape shape
+              :objects (get frame-objects (:id shape))
+              :thumbnail? (not (contains? active-frames (:id shape)))}]
 
-         :else
-         [:& nested-frame-wrapper
-          {:shape shape
-           :key (:id shape)
-           :objects (get frame-objects (:id shape))}]))]))
+            :else
+            [:& nested-frame-wrapper
+             {:shape shape
+              :objects (get frame-objects (:id shape))}])])]]]))
 
 (mf/defc shape-wrapper
   {::mf/wrap [#(mf/memo' % (mf/check-props ["shape"]))]
@@ -98,20 +100,21 @@
 
         opts  #js {:shape shape :thumbnail? thumbnail?}]
     (when (and (some? shape) (not (:hidden shape)))
-      (case (:type shape)
-        :path    [:> path/path-wrapper opts]
-        :text    [:> text/text-wrapper opts]
-        :group   [:> group-wrapper opts]
-        :rect    [:> rect-wrapper opts]
-        :image   [:> image-wrapper opts]
-        :circle  [:> circle-wrapper opts]
-        :svg-raw [:> svg-raw-wrapper opts]
-        :bool    [:> bool-wrapper opts]
+      [:g.workspace-shape-wrapper
+       (case (:type shape)
+         :path    [:> path/path-wrapper opts]
+         :text    [:> text/text-wrapper opts]
+         :group   [:> group-wrapper opts]
+         :rect    [:> rect-wrapper opts]
+         :image   [:> image-wrapper opts]
+         :circle  [:> circle-wrapper opts]
+         :svg-raw [:> svg-raw-wrapper opts]
+         :bool    [:> bool-wrapper opts]
 
-        ;; Only used when drawing a new frame.
-        :frame [:> nested-frame-wrapper opts]
+         ;; Only used when drawing a new frame.
+         :frame [:> nested-frame-wrapper opts]
 
-        nil))))
+         nil)])))
 
 (def group-wrapper (group/group-wrapper-factory shape-wrapper))
 (def svg-raw-wrapper (svg-raw/svg-raw-wrapper-factory shape-wrapper))

frontend/src/app/main/ui/workspace/shapes/frame/dynamic_modifiers.cljs

@@ -11,79 +11,28 @@
    [app.common.geom.matrix :as gmt]
    [app.common.geom.point :as gpt]
    [app.common.geom.shapes :as gsh]
+   [app.common.types.modifiers :as ctm]
    [app.main.store :as st]
+   [app.main.ui.hooks :as hooks]
    [app.main.ui.workspace.viewport.utils :as vwu]
    [app.util.dom :as dom]
+   [app.util.globals :as globals]
    [rumext.v2 :as mf]))
 
-(defn- transform-no-resize
-  "If we apply a scale directly to the texts it will show deformed so we need to create this
-  correction matrix to \"undo\" the resize but keep the other transformations."
-  [{:keys [x y width height points transform transform-inverse] :as shape} current-transform modifiers]
+(defn get-shape-node
+  ([id]
+   (get-shape-node js/document id))
 
-  (let [corner-pt (first points)
-        corner-pt (cond-> corner-pt (some? transform-inverse) (gpt/transform transform-inverse))
-
-        resize-x? (some? (:resize-vector modifiers))
-        resize-y? (some? (:resize-vector-2 modifiers))
-
-        flip-x? (neg? (get-in modifiers [:resize-vector :x]))
-        flip-y? (or (neg? (get-in modifiers [:resize-vector :y]))
-                    (neg? (get-in modifiers [:resize-vector-2 :y])))
-
-        result (cond-> (gmt/matrix)
-                 (and (some? transform) (or resize-x? resize-y?))
-                 (gmt/multiply transform)
-
-                 resize-x?
-                 (gmt/scale (gpt/inverse (:resize-vector modifiers)) corner-pt)
-
-                 resize-y?
-                 (gmt/scale (gpt/inverse (:resize-vector-2 modifiers)) corner-pt)
-
-                 flip-x?
-                 (gmt/scale (gpt/point -1 1) corner-pt)
-
-                 flip-y?
-                 (gmt/scale (gpt/point 1 -1) corner-pt)
-
-                 (and (some? transform) (or resize-x? resize-y?))
-                 (gmt/multiply transform-inverse))
-
-        [width height]
-        (if (or resize-x? resize-y?)
-          (let [pc (cond-> (gpt/point x y)
-                     (some? transform)
-                     (gpt/transform transform)
-
-                     (some? current-transform)
-                     (gpt/transform current-transform))
-
-                pw (cond-> (gpt/point (+ x width) y)
-                     (some? transform)
-                     (gpt/transform transform)
-
-                     (some? current-transform)
-                     (gpt/transform current-transform))
-
-                ph (cond-> (gpt/point x (+ y height))
-                     (some? transform)
-                     (gpt/transform transform)
-
-                     (some? current-transform)
-                     (gpt/transform current-transform))]
-            [(gpt/distance pc pw) (gpt/distance pc ph)])
-          [width height])]
-
-    [result width height]))
+  ([base-node id]
+   (if (= (.-id base-node) (dm/str "shape-" id))
+     base-node
+     (dom/query base-node (dm/str "#shape-" id)))))
 
 (defn get-nodes
   "Retrieve the DOM nodes to apply the matrix transformation"
   [base-node {:keys [id type masked-group?] :as shape}]
   (when (some? base-node)
-    (let [shape-node (if (= (.-id base-node) (dm/str "shape-" id))
-                       base-node
-                       (dom/query base-node (dm/str "#shape-" id)))
+    (let [shape-node (get-shape-node base-node id)
 
           frame? (= :frame type)
           group? (= :group type)
@@ -110,8 +59,7 @@
            (dom/query-all shape-defs ".svg-mask-wrapper")))
 
         text?
-        [shape-node
-         (dom/query shape-node ".text-container")]
+        [shape-node]
 
         :else
         [shape-node]))))
@@ -164,7 +112,7 @@
 
 (defn set-transform-att!
   [node att value]
-  
+
   (let [old-att (dom/get-attribute node (dm/str "data-old-" att))
         new-value (if (some? old-att)
                     (dm/str value " " old-att)
@@ -177,37 +125,20 @@
 
 (defn update-transform!
   [base-node shapes transforms modifiers]
-  (doseq [{:keys [id type] :as shape} shapes]
+  (doseq [{:keys [id _type] :as shape} shapes]
     (when-let [nodes (get-nodes base-node shape)]
       (let [transform (get transforms id)
-            modifiers (get-in modifiers [id :modifiers])
-            text? (= type :text)
-            transform-text? (and text? (and (nil? (:resize-vector modifiers)) (nil? (:resize-vector-2 modifiers))))]
+            modifiers (get-in modifiers [id :modifiers])]
 
         (doseq [node nodes]
           (cond
-            ;; Text shapes need special treatment because their resize only change
-            ;; the text area, not the change size/position
-            (dom/class? node "frame-thumbnail")
-            (let [[transform] (transform-no-resize shape transform modifiers)]
-              (set-transform-att! node "transform" transform))
-
             (dom/class? node "frame-children")
             (set-transform-att! node "transform" (gmt/inverse transform))
 
-            (dom/class? node "text-container")
-            (let [modifiers (dissoc modifiers :displacement :rotation)]
-              (when (not (gsh/empty-modifiers? modifiers))
-                (let [mtx (-> shape
-                              (assoc :modifiers modifiers)
-                              (gsh/transform-shape)
-                              (gsh/transform-matrix {:no-flip true}))]
-                  (override-transform-att! node "transform" mtx))))
-
             (dom/class? node "frame-title")
-            (let [shape (-> shape (assoc :modifiers modifiers) gsh/transform-shape)
-                  zoom (get-in @st/state [:workspace-local :zoom] 1)
-                  mtx  (vwu/title-transform shape zoom)]
+            (let [shape (gsh/transform-shape shape modifiers)
+                  zoom  (get-in @st/state [:workspace-local :zoom] 1)
+                  mtx   (vwu/title-transform shape zoom)]
               (override-transform-att! node "transform" mtx))
 
             (or (= (dom/get-tag-name node) "mask")
@@ -221,7 +152,7 @@
             (= (dom/get-tag-name node) "pattern")
             (set-transform-att! node "patternTransform" transform)
 
-            (and (some? transform) (some? node) (or (not text?) transform-text?))
+            (and (some? transform) (some? node))
             (set-transform-att! node "transform" transform)))))))
 
 (defn remove-transform!
@@ -249,6 +180,16 @@
                 (dom/remove-attribute! node "data-old-transform")
                 (dom/remove-attribute! node "transform")))))))))
 
+(defn adapt-text-modifiers
+  [modifiers shape]
+  (let [shape' (gsh/transform-shape shape modifiers)
+        scalev
+        (gpt/point (/ (:width shape) (:width shape'))
+                   (/ (:height shape) (:height shape')))]
+    ;; Reverse the change in size so we can recalculate the layout
+    (-> modifiers
+        (ctm/resize scalev (-> shape' :points first) (:transform shape') (:transform-inverse shape')))))
+
 (defn use-dynamic-modifiers
   [objects node modifiers]
 
@@ -259,41 +200,71 @@
            (when (some? modifiers)
              (d/mapm (fn [id {modifiers :modifiers}]
                        (let [shape (get objects id)
-                             center (gsh/center-shape shape)
-                             modifiers (cond-> modifiers
-                                         ;; For texts we only use the displacement because
-                                         ;; resize needs to recalculate the text layout
-                                         (= :text (:type shape))
-                                         (select-keys [:displacement :rotation]))]
-                         (gsh/modifiers->transform center modifiers)))
+                             adapt-text? (and (= :text (:type shape)) (not (ctm/only-move? modifiers)))
+                             modifiers (cond-> modifiers adapt-text? (adapt-text-modifiers shape))]
+                         (ctm/modifiers->transform modifiers)))
                      modifiers))))
 
+        add-children (mf/use-memo (mf/deps modifiers) #(ctm/added-children-frames modifiers))
+        add-children (hooks/use-equal-memo add-children)
+        add-children-prev (hooks/use-previous add-children)
+
         shapes
         (mf/use-memo
          (mf/deps transforms)
          (fn []
            (->> (keys transforms)
+                (filter #(some? (get transforms %)))
                 (mapv (d/getf objects)))))
 
         prev-shapes (mf/use-var nil)
         prev-modifiers (mf/use-var nil)
         prev-transforms (mf/use-var nil)]
 
+    (mf/use-effect
+     (mf/deps add-children)
+     (fn []
+       (doseq [{:keys [frame shape]} add-children-prev]
+         (let [frame-node (get-shape-node node frame)
+               shape-node (get-shape-node shape)
+               mirror-node (dom/query frame-node (dm/fmt ".mirror-shape[href='#shape-%'" shape))]
+           (when mirror-node (.remove mirror-node))
+           (dom/remove-attribute! (dom/get-parent shape-node) "display")))
+
+       (doseq [{:keys [frame shape]} add-children]
+         (let [frame-node (get-shape-node node frame)
+               shape-node (get-shape-node shape)
+
+               use-node
+               (.createElementNS globals/document "http://www.w3.org/2000/svg" "use")
+
+               contents-node
+               (or (dom/query frame-node ".frame-children") frame-node)]
+
+           (dom/set-attribute! use-node "href" (dm/fmt "#shape-%" shape))
+           (dom/add-class! use-node "mirror-shape")
+           (dom/append-child! contents-node use-node)
+           (dom/set-attribute! (dom/get-parent shape-node) "display" "none")))))
+
     (mf/use-layout-effect
      (mf/deps transforms)
      (fn []
-       (let [is-prev-val? (d/not-empty? @prev-modifiers)
-             is-cur-val? (d/not-empty? modifiers)]
 
-         (when (and (not is-prev-val?) is-cur-val?)
-           (start-transform! node shapes))
+       (let [curr-shapes-set (into #{} (map :id) shapes)
+             prev-shapes-set (into #{} (map :id) @prev-shapes)
 
-         (when is-cur-val?
+             new-shapes      (->> shapes (remove #(contains? prev-shapes-set (:id %))))
+             removed-shapes  (->> @prev-shapes (remove #(contains? curr-shapes-set (:id %))))]
+
+         (when (d/not-empty? new-shapes)
+           (start-transform! node new-shapes))
+
+         (when (d/not-empty? shapes)
            (update-transform! node shapes transforms modifiers))
 
-         (when (and is-prev-val? (not is-cur-val?))
-           (remove-transform! node @prev-shapes))
+         (when (d/not-empty? removed-shapes)
+           (remove-transform! node @prev-shapes)))
 
-         (reset! prev-modifiers modifiers)
-         (reset! prev-transforms transforms)
-         (reset! prev-shapes shapes))))))
+       (reset! prev-modifiers modifiers)
+       (reset! prev-transforms transforms)
+       (reset! prev-shapes shapes)))))

frontend/src/app/main/ui/workspace/shapes/frame/thumbnail_render.cljs

@@ -199,6 +199,8 @@
     (mf/use-effect
      (mf/deps disable?)
      (fn []
+       (when (and disable? (not @disable-ref?))
+         (rx/push! updates-str :update))
        (reset! disable-ref? disable?)))
 
     (mf/use-effect

frontend/src/app/main/ui/workspace/shapes/path/editor.cljs

@@ -6,6 +6,8 @@
 
 (ns app.main.ui.workspace.shapes.path.editor
   (:require
+   [app.common.data :as d]
+   [app.common.data.macros :as dm]
    [app.common.geom.point :as gpt]
    [app.common.geom.shapes.path :as gsp]
    [app.common.path.commands :as upc]
@@ -183,8 +185,9 @@
         matches      (concat (second (:x snap-matches)) (second (:y snap-matches)))]
 
     [:g.snap-paths
-     (for [[from to] matches]
-       [:line {:x1 (:x from)
+     (for [[idx [from to]] (d/enumerate matches)]
+       [:line {:key (dm/str "snap-" idx "-" from "-" to)
+               :x1 (:x from)
                :y1 (:y from)
                :x2 (:x to)
                :y2 (:y to)
@@ -308,7 +311,7 @@
                         :start-path? start-p?
                         :zoom zoom}]])
 
-     (for [position points]
+     (for [[index position] (d/enumerate points)]
        (let [show-handler?
              (fn [[index prefix]]
                (let [handler-position (upc/handler->point content index prefix)]
@@ -322,7 +325,7 @@
              pos-handlers (->> pos-handlers (filter show-handler?))
              curve? (boolean (seq pos-handlers))]
 
-         [:g.path-node
+         [:g.path-node {:key (dm/str index "-" (:x position) "-" (:y position))}
           [:g.point-handlers {:pointer-events (when (= edit-mode :draw) "none")}
            (for [[index prefix] pos-handlers]
              (let [handler-position (upc/handler->point content index prefix)

frontend/src/app/main/ui/workspace/shapes/text.cljs

@@ -58,7 +58,7 @@
                      :height height
                      :style {:fill "none" :stroke "red"}}]
 
-             ;; Text baselineazo
+             ;; Text baseline
              [:line {:x1 (mth/round x)
                      :y1 (mth/round (- (:y data) (:height data)))
                      :x2 (mth/round (+ x width))

frontend/src/app/main/ui/workspace/shapes/text/viewport_texts_html.cljs

@@ -8,11 +8,13 @@
   (:require
    [app.common.data :as d]
    [app.common.data.macros :as dm]
+   [app.common.geom.point :as gpt]
    [app.common.geom.shapes :as gsh]
    [app.common.geom.shapes.text :as gsht]
    [app.common.math :as mth]
    [app.common.pages.helpers :as cph]
    [app.common.text :as txt]
+   [app.common.types.modifiers :as ctm]
    [app.main.data.workspace.texts :as dwt]
    [app.main.fonts :as fonts]
    [app.main.refs :as refs]
@@ -31,22 +33,24 @@
   (-> shape
       (cond-> (some? (meta (:position-data shape)))
         (with-meta (meta (:position-data shape))))
-      (dissoc :position-data :transform :transform-inverse)))
+      (dissoc :position-data)))
 
-(defn strip-modifier
-  [modifier]
-  (if (or (some? (dm/get-in modifier [:modifiers :resize-vector]))
-          (some? (dm/get-in modifier [:modifiers :resize-vector-2])))
-    modifier
-    (d/update-when modifier :modifiers dissoc :displacement :rotation)))
+(defn fix-position [shape modifier]
+  (let [shape' (-> shape
+                   (assoc :grow-type :fixed)
+                   (gsh/transform-shape modifier))
+
+        deltav (gpt/to-vec (gpt/point (:selrect shape'))
+                           (gpt/point (:selrect shape)))]
+    (gsh/transform-shape shape' (ctm/move-modifiers deltav))))
 
 (defn process-shape [modifiers {:keys [id] :as shape}]
-  (let [modifier (-> (get modifiers id) strip-modifier)
-        shape (cond-> shape
-                (not (gsh/empty-modifiers? (:modifiers modifier)))
-                (-> (assoc :grow-type :fixed)
-                    (merge modifier) gsh/transform-shape))]
+  (let [modifier (dm/get-in modifiers [id :modifiers])]
     (-> shape
+        (cond-> (and (some? modifier)
+                     (not (ctm/only-move? modifier)))
+          (fix-position modifier))
+
         (cond-> (nil? (:position-data shape))
           (assoc :migrate true))
         strip-position-data)))
@@ -88,20 +92,26 @@
 
 (defn- update-text-modifier
   [{:keys [grow-type id]} node]
-  (p/let [position-data (tsp/calc-position-data id)
-          props {:position-data position-data}
+  (ts/raf
+   #(p/let [position-data (tsp/calc-position-data id)
+            props {:position-data position-data}
 
-          props
-          (if (contains? #{:auto-height :auto-width} grow-type)
-            (let [{:keys [width height]} (-> (dom/query node ".paragraph-set") (dom/get-client-size))
-                  width (mth/ceil width)
-                  height (mth/ceil height)]
-              (if (and (not (mth/almost-zero? width)) (not (mth/almost-zero? height)))
-                (assoc props :width width :height height)
-                props))
-            props)]
+            props
+            (if (contains? #{:auto-height :auto-width} grow-type)
+              (let [{:keys [width height]} (-> (dom/query node ".paragraph-set") (dom/get-client-size))
+                    width (mth/ceil width)
+                    height (mth/ceil height)]
+                (if (and (not (mth/almost-zero? width)) (not (mth/almost-zero? height)))
+                  (cond-> props
+                    (= grow-type :auto-width)
+                    (assoc :width width)
 
-    (st/emit! (dwt/update-text-modifier id props))))
+                    (or (= grow-type :auto-height) (= grow-type :auto-width))
+                    (assoc :height height))
+                  props))
+              props)]
+
+      (st/emit! (dwt/update-text-modifier id props)))))
 
 (mf/defc text-container
   {::mf/wrap-props false
@@ -136,8 +146,8 @@
         (fn [id]
           (let [new-shape (get text-shapes id)
                 old-shape (get prev-text-shapes id)
-                old-modifiers (-> (get prev-modifiers id) strip-modifier)
-                new-modifiers (-> (get modifiers id) strip-modifier)
+                old-modifiers (get prev-modifiers id)
+                new-modifiers (get modifiers id)
 
                 remote? (some? (-> new-shape meta :session-id)) ]
 
@@ -159,10 +169,9 @@
 
         handle-update-modifier (mf/use-callback update-text-modifier)
         handle-update-shape (mf/use-callback update-text-shape)]
-
     [:*
      (for [{:keys [id] :as shape} changed-texts]
-       [:& text-container {:shape (gsh/transform-shape shape)
+       [:& text-container {:shape shape
                            :on-update (if (some? (get modifiers (:id shape)))
                                         handle-update-modifier
                                         handle-update-shape)

frontend/src/app/main/ui/workspace/sidebar/options.cljs

@@ -37,35 +37,35 @@
 (mf/defc shape-options
   {::mf/wrap [#(mf/throttle % 60)]}
   [{:keys [shape shapes-with-children page-id file-id shared-libs]}]
-  [:*
-   (case (:type shape)
-     :frame   [:& frame/options {:shape shape}]
-     :group   [:& group/options {:shape shape :shape-with-children shapes-with-children :file-id file-id :shared-libs shared-libs}]
-     :text    [:& text/options {:shape shape  :file-id file-id :shared-libs shared-libs}]
-     :rect    [:& rect/options {:shape shape}]
-     :circle  [:& circle/options {:shape shape}]
-     :path    [:& path/options {:shape shape}]
-     :image   [:& image/options {:shape shape}]
-     :svg-raw [:& svg-raw/options {:shape shape}]
-     :bool    [:& bool/options {:shape shape}]
-     nil)
-   [:& exports-menu
-    {:ids [(:id shape)]
-     :values (select-keys shape [:exports])
-     :shape shape
-     :page-id page-id
-     :file-id file-id}]])
+  (let [workspace-modifiers (mf/deref refs/workspace-modifiers)
+        modifiers (get-in workspace-modifiers [(:id shape) :modifiers])
+        shape (gsh/transform-shape shape modifiers)]
+    [:*
+     (case (:type shape)
+       :frame   [:& frame/options {:shape shape}]
+       :group   [:& group/options {:shape shape :shape-with-children shapes-with-children :file-id file-id :shared-libs shared-libs}]
+       :text    [:& text/options {:shape shape  :file-id file-id :shared-libs shared-libs}]
+       :rect    [:& rect/options {:shape shape}]
+       :circle  [:& circle/options {:shape shape}]
+       :path    [:& path/options {:shape shape}]
+       :image   [:& image/options {:shape shape}]
+       :svg-raw [:& svg-raw/options {:shape shape}]
+       :bool    [:& bool/options {:shape shape}]
+       nil)
+     [:& exports-menu
+      {:ids [(:id shape)]
+       :values (select-keys shape [:exports])
+       :shape shape
+       :page-id page-id
+       :file-id file-id}]]))
 
 (mf/defc options-content
   {::mf/wrap [mf/memo]}
   [{:keys [selected section shapes shapes-with-children page-id file-id]}]
   (let [drawing           (mf/deref refs/workspace-drawing)
-        base-objects      (-> (mf/deref refs/workspace-page-objects))
+        objects           (mf/deref refs/workspace-page-objects)
         shared-libs       (mf/deref refs/workspace-libraries)
-        modifiers         (mf/deref refs/workspace-modifiers)
-        objects-modified  (mf/with-memo [base-objects modifiers]
-                            (gsh/merge-modifiers base-objects modifiers))
-        selected-shapes   (into [] (keep (d/getf objects-modified)) selected)]
+        selected-shapes   (into [] (keep (d/getf objects)) selected)]
     [:div.tool-window
      [:div.tool-window-content
       [:& tab-container {:on-change-tab #(st/emit! (udw/set-options-mode %))

frontend/src/app/main/ui/workspace/sidebar/options/menus/constraints.cljs

@@ -30,7 +30,6 @@
         frames (map #(deref (refs/object-by-id (:frame-id %))) old-shapes)
 
         shapes (as-> old-shapes $
-                 (map gsh/transform-shape $)
                  (map gsh/translate-to-frame $ frames))
 
         values (let [{:keys [x y]} (-> shapes first :points gsh/points->selrect)]

frontend/src/app/main/ui/workspace/sidebar/options/menus/layout_container.cljs

@@ -18,12 +18,12 @@
 
 (def layout-container-flex-attrs
   [:layout                 ;; :flex, :grid in the future
-   :layout-flex-dir        ;; :row, :reverse-row, :column, :reverse-column 
+   :layout-flex-dir        ;; :row, :reverse-row, :column, :reverse-column
    :layout-gap-type        ;; :simple, :multiple
    :layout-gap             ;; {:row-gap number , :column-gap number}
-   :layout-align-items     ;; :start :end :center :strech
+   :layout-align-items     ;; :start :end :center :stretch
    :layout-justify-content ;; :start :center :end :space-between :space-around
-   :layout-align-content   ;; :start :center :end :space-between :space-around :strech (by default)
+   :layout-align-content   ;; :start :center :end :space-between :space-around :stretch (by default)
    :layout-wrap-type       ;; :wrap, :no-wrap
    :layout-padding-type    ;; :simple, :multiple
    :layout-padding         ;; {:p1 num :p2 num :p3 num :p4 num} number could be negative
@@ -37,13 +37,13 @@
                      :start    i/align-items-column-start
                      :end      i/align-items-column-end
                      :center   i/align-items-column-center
-                     :strech   i/align-items-column-strech
+                     :stretch  i/align-items-column-strech
                      :baseline i/align-items-column-baseline)
                    (case val
                      :start    i/align-items-row-start
                      :end      i/align-items-row-end
                      :center   i/align-items-row-center
-                     :strech   i/align-items-row-strech
+                     :stretch  i/align-items-row-strech
                      :baseline i/align-items-row-baseline))
     :justify-content (if is-col?
                        (case val
@@ -66,29 +66,29 @@
                         :center        i/align-content-column-center
                         :space-around  i/align-content-column-around
                         :space-between i/align-content-column-between
-                        :strech nil)
-                      
+                        :stretch nil)
+
                       (case val
                         :start         i/align-content-row-start
                         :end           i/align-content-row-end
                         :center        i/align-content-row-center
                         :space-around  i/align-content-row-around
                         :space-between i/align-content-row-between
-                        :strech nil))
+                        :stretch nil))
 
     :align-self  (if is-col?
-                   (case val
-                     :start     i/align-self-column-top
-                     :end   i/align-self-column-bottom
-                     :center   i/align-self-column-center
-                     :strech   i/align-self-column-strech
-                     :baseline i/align-self-column-baseline)
                    (case val
                      :start   i/align-self-row-left
                      :end    i/align-self-row-right
                      :center   i/align-self-row-center
-                     :strech   i/align-self-row-strech
-                     :baseline i/align-self-row-baseline))))
+                     :stretch   i/align-self-row-strech
+                     :baseline i/align-self-row-baseline)
+                   (case val
+                     :start     i/align-self-column-top
+                     :end   i/align-self-column-bottom
+                     :center   i/align-self-column-center
+                     :stretch   i/align-self-column-strech
+                     :baseline i/align-self-column-baseline))))
 
 (mf/defc direction-btn
   [{:keys [dir saved-dir set-direction] :as props}]
@@ -129,7 +129,7 @@
   [{:keys [is-col? align-items set-align] :as props}]
 
   [:div.align-items-style
-   (for [align [:start :center :end :strech]]
+   (for [align [:start :center :end #_:stretch #_:baseline]]
      [:button.align-start.tooltip
       {:class    (dom/classnames :active  (= align-items align)
                                  :tooltip-bottom-left (not= align :start)
@@ -170,7 +170,8 @@
   [{:keys [values on-change-style on-change] :as props}]
 
   (let [padding-type (:layout-padding-type values)
-        rx (if (apply = (vals (:layout-padding values)))
+        rx (if (and (not (= :multiple (:layout-padding values)))
+                    (apply = (vals (:layout-padding values))))
              (:p1 (:layout-padding values))
              "--")]
 
@@ -274,13 +275,14 @@
           (st/emit! (dwsl/remove-layout ids))
           (reset! open? false))
 
-        set-flex            (fn []
-                              (st/emit! (dwsl/remove-layout ids))
-                              (on-add-layout :flex))
-
-        set-grid            (fn []
-                              (st/emit! (dwsl/remove-layout ids))
-                              (on-add-layout :grid))
+        ;; Uncomment when activating the grid options
+        ;; set-flex            (fn []
+        ;;                       (st/emit! (dwsl/remove-layout ids))
+        ;;                       (on-add-layout :flex))
+        ;;
+        ;; set-grid            (fn []
+        ;;                       (st/emit! (dwsl/remove-layout ids))
+        ;;                       (on-add-layout :grid))
 
         ;; Flex-direction
 
@@ -312,7 +314,7 @@
         align-content         (:layout-align-content values)
         set-align-content     (fn [value]
                                 (if (= align-content value)
-                                  (st/emit! (dwsl/update-layout ids {:layout-align-content :strech}))
+                                  (st/emit! (dwsl/update-layout ids {:layout-align-content :stretch}))
                                   (st/emit! (dwsl/update-layout ids {:layout-align-content value}))))
 
         ;; Gap
@@ -365,7 +367,7 @@
        [:span "Layout"]
        (if (:layout values)
          [:div.title-actions
-          [:div.layout-btns
+          #_[:div.layout-btns
            [:button {:on-click set-flex
                      :class (dom/classnames
                              :active (= :flex layout-type))} "Flex"]

frontend/src/app/main/ui/workspace/sidebar/options/menus/layout_item.cljs

@@ -8,7 +8,9 @@
   (:require
    [app.common.data :as d]
    [app.common.data.macros :as dm]
+   [app.common.types.shape.layout :as ctl]
    [app.main.data.workspace.shape-layout :as dwsl]
+   [app.main.refs :as refs]
    [app.main.store :as st]
    [app.main.ui.components.numeric-input :refer [numeric-input]]
    [app.main.ui.icons :as i]
@@ -26,13 +28,13 @@
    :layout-item-min-h       ;; num
    :layout-item-max-w       ;; num
    :layout-item-min-w       ;; num
-   :layout-item-align-self  ;; :start :end :center :strech :baseline
+   :layout-item-align-self  ;; :start :end :center :stretch :baseline
    ])
 
 (mf/defc margin-section
   [{:keys [values change-margin-style on-margin-change] :as props}]
 
-  (let [margin-type (or (:layout-margin-type values) :simple)]
+  (let [margin-type (or (:layout-item-margin-type values) :simple)]
 
     [:div.margin-row
      [:div.margin-icons
@@ -57,7 +59,7 @@
            {:placeholder "--"
             :on-click #(dom/select-target %)
             :on-change (partial on-margin-change :simple)
-            :value (or (-> values :layout-margin :m1) 0)}]]]
+            :value (or (-> values :layout-item-margin :m1) 0)}]]]
 
         (= margin-type :multiple)
         (for [num [:m1 :m2 :m3 :m4]]
@@ -73,95 +75,100 @@
              {:placeholder "--"
               :on-click #(dom/select-target %)
               :on-change (partial on-margin-change num)
-              :value (or (-> values :layout-margin num) 0)}]]]))]]))
+              :value (or (-> values :layout-item-margin num) 0)}]]]))]]))
 
 (mf/defc element-behavior
-  [{:keys [is-layout-container? is-layout-child? layout-h-behavior layout-v-behavior on-change-behavior] :as props}]
+  [{:keys [is-layout-container? is-layout-child? layout-item-h-sizing layout-item-v-sizing on-change-behavior] :as props}]
   (let [fill? is-layout-child?
-        auto?  is-layout-container?]
+        auto? is-layout-container?]
 
     [:div.btn-wrapper
      [:div.layout-behavior.horizontal
       [:button.behavior-btn.tooltip.tooltip-bottom
        {:alt "Fix width"
-        :class  (dom/classnames :activated (= layout-h-behavior :fix))
+        :class  (dom/classnames :active (= layout-item-h-sizing :fix))
         :on-click #(on-change-behavior :h :fix)}
        i/auto-fix-layout]
       (when fill?
         [:button.behavior-btn.tooltip.tooltip-bottom
          {:alt "Width 100%"
-          :class  (dom/classnames :activated (= layout-h-behavior :fill))
+          :class  (dom/classnames :active (= layout-item-h-sizing :fill))
           :on-click #(on-change-behavior :h :fill)}
           i/auto-fill])
       (when auto?
         [:button.behavior-btn.tooltip.tooltip-bottom
          {:alt "Fit content"
-          :class  (dom/classnames :activated (= layout-v-behavior :auto))
+          :class  (dom/classnames :active (= layout-item-h-sizing :auto))
           :on-click #(on-change-behavior :h :auto)}
          i/auto-hug])]
 
      [:div.layout-behavior
       [:button.behavior-btn.tooltip.tooltip-bottom
        {:alt "Fix height"
-        :class  (dom/classnames :activated (= layout-v-behavior :fix))
+        :class  (dom/classnames :active (= layout-item-v-sizing :fix))
         :on-click #(on-change-behavior :v :fix)}
         i/auto-fix-layout]
       (when fill?
         [:button.behavior-btn.tooltip.tooltip-bottom
          {:alt "Height 100%"
-          :class  (dom/classnames :activated (= layout-v-behavior :fill))
+          :class  (dom/classnames :active (= layout-item-v-sizing :fill))
           :on-click #(on-change-behavior :v :fill)}
          i/auto-fill])
       (when auto?
         [:button.behavior-btn.tooltip.tooltip-bottom-left
          {:alt "Fit content"
-          :class  (dom/classnames :activated (= layout-v-behavior :auto))
+          :class  (dom/classnames :active (= layout-item-v-sizing :auto))
           :on-click #(on-change-behavior :v :auto)}
          i/auto-hug])]]))
 
 
 (mf/defc align-self-row
   [{:keys [is-col? align-self set-align-self] :as props}]
-  (let [dir-v [:start :center :end :strech :baseline]]
+  (let [dir-v [:start :center :end #_:stretch #_:baseline]]
     [:div.align-self-style
      (for [align dir-v]
        [:button.align-self.tooltip.tooltip-bottom
         {:class    (dom/classnames :active  (= align-self align)
                                    :tooltip-bottom-left (not= align :start)
                                    :tooltip-bottom (= align :start))
-         :alt      (dm/str "Align self " (d/name align)) ;; TODO añadir lineas de texto a tradus
+         :alt      (dm/str "Align self " (d/name align))
          :on-click #(set-align-self align)
          :key (str "align-self" align)}
         (get-layout-flex-icon :align-self align is-col?)])]))
 
 (mf/defc layout-item-menu
   {::mf/wrap [#(mf/memo' % (mf/check-props ["ids" "values" "type"]))]}
-  [{:keys [ids _type values is-layout-child? is-layout-container?] :as props}]
+  [{:keys [ids values is-layout-child? is-layout-container?] :as props}]
+
   (let [open?             (mf/use-state false)
         toggle-open       (fn [] (swap! open? not))
 
+        selection-parents-ref (mf/use-memo (mf/deps ids) #(refs/parents-by-ids ids))
+        selection-parents     (mf/deref selection-parents-ref)
+
         change-margin-style
         (fn [type]
-          (st/emit! (dwsl/update-layout-child ids {:layout-margin-type type})))
+          (st/emit! (dwsl/update-layout-child ids {:layout-item-margin-type type})))
 
-        align-self         (:layout-align-self values)
+        align-self         (:layout-item-align-self values)
         set-align-self     (fn [value]
-                             (st/emit! (dwsl/update-layout-child ids {:layout-align-self value})))
+                             (if (= align-self value)
+                               (st/emit! (dwsl/update-layout-child ids {:layout-item-align-self nil}))
+                               (st/emit! (dwsl/update-layout-child ids {:layout-item-align-self value}))))
 
-        saved-dir (:layout-flex-dir values)
-        is-col? (or (= :column saved-dir) (= :reverse-column saved-dir))
+        is-col? (every? ctl/col? selection-parents)
 
         on-margin-change
         (fn [type val]
           (if (= type :simple)
-            (st/emit! (dwsl/update-layout-child ids {:layout-margin {:m1 val :m2 val :m3 val :m4 val}}))
-            (st/emit! (dwsl/update-layout-child ids {:layout-margin {type val}}))))
+            (st/emit! (dwsl/update-layout-child ids {:layout-item-margin {:m1 val :m2 val :m3 val :m4 val}}))
+            (st/emit! (dwsl/update-layout-child ids {:layout-item-margin {type val}}))))
 
         on-change-behavior
         (fn [dir value]
           (if (= dir :h)
-            (st/emit! (dwsl/update-layout-child ids {:layout-h-behavior value}))
-            (st/emit! (dwsl/update-layout-child ids {:layout-v-behavior value}))))
+            (st/emit! (dwsl/update-layout-child ids {:layout-item-h-sizing value}))
+            (st/emit! (dwsl/update-layout-child ids {:layout-item-v-sizing value}))))
 
         on-size-change
         (fn [measure value]
@@ -176,14 +183,16 @@
        [:div.row-title "Sizing"]
        [:& element-behavior {:is-layout-child? is-layout-child?
                              :is-layout-container? is-layout-container?
-                             :layout-v-behavior (or (:layout-v-behavior values) :fix)
-                             :layout-h-behavior (or (:layout-h-behavior values) :fix)
+                             :layout-item-v-sizing (or (:layout-item-v-sizing values) :fix)
+                             :layout-item-h-sizing (or (:layout-item-h-sizing values) :fix)
                              :on-change-behavior on-change-behavior}]]
-      
 
-      [:& margin-section {:values values
-                          :change-margin-style change-margin-style
-                          :on-margin-change on-margin-change}]
+
+      (when is-layout-child?
+        [:& margin-section {:values values
+                            :change-margin-style change-margin-style
+                            :on-margin-change on-margin-change}])
+
       [:div.advanced-ops-container
        [:button.advanced-ops.toltip.tooltip-bottom
         {:on-click toggle-open
@@ -193,21 +202,22 @@
 
       (when @open?
         [:div.advanced-ops-body
-         [:div.layout-row
-          [:div.direction-wrap.row-title "Align"]
-          [:div.btn-wrapper
-           [:& align-self-row {:is-col? is-col?
-                               :align-self align-self
-                               :set-align-self set-align-self}]]]
+         (when is-layout-child?
+           [:div.layout-row
+            [:div.direction-wrap.row-title "Align"]
+            [:div.btn-wrapper
+             [:& align-self-row {:is-col? is-col?
+                                 :align-self align-self
+                                 :set-align-self set-align-self}]]])
          [:div.input-wrapper
-          (for  [item [:layout-max-h :layout-min-h :layout-max-w :layout-min-w]]
+          (for  [item [:layout-item-max-h :layout-item-min-h :layout-item-max-w :layout-item-min-w]]
             [:div.tooltip.tooltip-bottom
              {:key   (d/name item)
               :alt   (tr (dm/str "workspace.options.layout-item.title." (d/name item)))
-              :class (dom/classnames "maxH" (= item :layout-max-h)
-                                     "minH" (= item :layout-min-h)
-                                     "maxW" (= item :layout-max-w)
-                                     "minW" (= item :layout-min-w))}
+              :class (dom/classnames "maxH" (= item :layout-item-max-h)
+                                     "minH" (= item :layout-item-min-h)
+                                     "maxW" (= item :layout-item-max-w)
+                                     "minW" (= item :layout-item-min-w))}
              [:div.input-element
               {:alt   (tr (dm/str "workspace.options.layout-item." (d/name item)))}
               [:> numeric-input
@@ -217,6 +227,5 @@
                 :placeholder "--"
                 :on-click #(dom/select-target %)
                 :on-change (partial on-size-change item)
-              ;; :value (get values item)
-                :value 100}]]])]])]]
-              ))
+                :value (get values item)
+                :nillable true}]]])]])]]))

frontend/src/app/main/ui/workspace/sidebar/options/menus/measures.cljs

@@ -8,6 +8,7 @@
   (:require
    [app.common.data :as d]
    [app.common.geom.shapes :as gsh]
+   [app.common.types.shape.layout :as ctl]
    [app.common.types.shape.radius :as ctsr]
    [app.main.constants :refer [size-presets]]
    [app.main.data.workspace :as udw]
@@ -79,11 +80,21 @@
                      [shape])
         frames (map #(deref (refs/object-by-id (:frame-id %))) old-shapes)
 
+        selection-parents-ref (mf/use-memo (mf/deps ids) #(refs/parents-by-ids ids))
+        selection-parents     (mf/deref selection-parents-ref)
+
+        flex-child? (->> selection-parents (some ctl/layout?))
+
+        flex-container? (ctl/layout? shape)
+        flex-auto-width? (ctl/auto-width? shape)
+        flex-fill-width? (ctl/fill-width? shape)
+        flex-auto-height? (ctl/auto-height? shape)
+        flex-fill-height? (ctl/fill-height? shape)
+
         ;; To show interactively the measures while the user is manipulating
         ;; the shape with the mouse, generate a copy of the shapes applying
         ;; the transient transformations.
         shapes (as-> old-shapes $
-                 (map gsh/transform-shape $)
                  (map gsh/translate-to-frame $ frames))
 
         ;; For rotated or stretched shapes, the origin point we show in the menu
@@ -296,6 +307,7 @@
                               :placeholder "--"
                               :on-click select-all
                               :on-change on-width-change
+                              :disabled (and (or flex-child? flex-container?) (or flex-auto-width? flex-fill-width?))
                               :value (:width values)}]]
 
           [:div.input-element.height {:title (tr "workspace.options.height")}
@@ -304,6 +316,7 @@
                               :placeholder "--"
                               :on-click select-all
                               :on-change on-height-change
+                              :disabled (and (or flex-child? flex-container?) (or flex-auto-height? flex-fill-height?))
                               :value (:height values)}]]
 
           [:div.lock-size {:class (dom/classnames
@@ -323,11 +336,13 @@
                               :placeholder "--"
                               :on-click select-all
                               :on-change on-pos-x-change
+                              :disabled flex-child?
                               :value (:x values)}]]
           [:div.input-element.Yaxis {:title (tr "workspace.options.y")}
            [:> numeric-input {:no-validate true
                               :placeholder "--"
                               :on-click select-all
+                              :disabled flex-child?
                               :on-change on-pos-y-change
                               :value (:y values)}]]])
 
@@ -441,5 +456,3 @@
            (tr "workspace.options.show-in-viewer")]])
 
        ]]]))
-
-

frontend/src/app/main/ui/workspace/sidebar/options/rows/stroke_row.cljs

@@ -7,6 +7,7 @@
 (ns app.main.ui.workspace.sidebar.options.rows.stroke-row
   (:require
    [app.common.data :as d]
+   [app.common.data.macros :as dm]
    [app.main.ui.components.dropdown :refer [dropdown]]
    [app.main.ui.components.numeric-input :refer [numeric-input]]
    [app.main.ui.hooks :as h]
@@ -132,9 +133,10 @@
                       :on-close (close-caps-select start-caps-state)}
          [:ul.dropdown.cap-select-dropdown {:style {:top  (:top @start-caps-state)
                                                     :left (:left @start-caps-state)}}
-          (for [[value label separator] (stroke-cap-names)]
+          (for [[idx [value label separator]] (d/enumerate (stroke-cap-names))]
             (let [img (value->img value)]
-              [:li {:class (dom/classnames :separator separator)
+              [:li {:key (dm/str "start-cap-" idx)
+                    :class (dom/classnames :separator separator)
                     :on-click #(on-stroke-cap-start-change index value)}
                (when img [:img {:src (value->img value)}])
                label]))]]
@@ -151,9 +153,10 @@
                       :on-close (close-caps-select end-caps-state)}
          [:ul.dropdown.cap-select-dropdown {:style {:top  (:top @end-caps-state)
                                                     :left (:left @end-caps-state)}}
-          (for [[value label separator] (stroke-cap-names)]
+          (for [[idx [value label separator]] (d/enumerate (stroke-cap-names))]
             (let [img (value->img value)]
-              [:li {:class (dom/classnames :separator separator)
+              [:li {:key (dm/str "end-cap-" idx)
+                    :class (dom/classnames :separator separator)
                     :on-click #(on-stroke-cap-end-change index value)}
                (when img [:img {:src (value->img value)}])
                label]))]]])]))

frontend/src/app/main/ui/workspace/sidebar/options/shapes/bool.cljs

@@ -41,8 +41,10 @@
          :values layout-item-values
          :is-layout-child? true
          :shape shape}])
-     [:& constraints-menu {:ids ids
-                           :values constraint-values}]
+
+     (when (not is-layout-child?)
+       [:& constraints-menu {:ids ids
+                             :values constraint-values}])
      [:& layer-menu {:ids ids
                      :type type
                      :values layer-values}]

frontend/src/app/main/ui/workspace/sidebar/options/shapes/circle.cljs

@@ -43,8 +43,9 @@
                              :is-layout-child? true
                              :is-layout-container? false
                              :shape shape}])
-     [:& constraints-menu {:ids ids
-                           :values constraint-values}]
+     (when (not is-layout-child?)
+       [:& constraints-menu {:ids ids
+                             :values constraint-values}])
      [:& layer-menu {:ids ids
                      :type type
                      :values layer-values}]

frontend/src/app/main/ui/workspace/sidebar/options/shapes/frame.cljs

@@ -6,6 +6,7 @@
 
 (ns app.main.ui.workspace.sidebar.options.shapes.frame
   (:require
+   [app.common.types.shape.layout :as ctl]
    [app.main.features :as features]
    [app.main.refs :as refs]
    [app.main.ui.workspace.sidebar.options.menus.blur :refer [blur-menu]]
@@ -35,26 +36,27 @@
         layout-item-values (select-keys shape layout-item-attrs)
 
         is-layout-child-ref (mf/use-memo (mf/deps ids) #(refs/is-layout-child? ids))
-        is-layout-child? (mf/deref is-layout-child-ref)]
+        is-layout-child? (mf/deref is-layout-child-ref)
+        is-layout-container? (ctl/layout? shape)]
     [:*
      [:& measures-menu {:ids [(:id shape)]
                         :values measure-values
                         :type type
                         :shape shape}]
-     [:& constraints-menu {:ids ids
-                           :values constraint-values}]
-     (when layout-active?
-       [:*
-        [:& layout-container-menu {:type type :ids [(:id shape)] :values layout-container-values}]
+     (when (not is-layout-child?)
+       [:& constraints-menu {:ids ids
+                             :values constraint-values}])
+     (when (or layout-active? is-layout-container?)
+       [:& layout-container-menu {:type type :ids [(:id shape)] :values layout-container-values}])
 
-        (when (or (:layout shape) is-layout-child?)
-          [:& layout-item-menu
-           {:ids ids
-            :type type
-            :values layout-item-values
-            :is-layout-child? is-layout-child?
-            :is-layout-container? (:layout shape)
-            :shape shape}])])
+     (when (and layout-active? (or is-layout-child? is-layout-container?))
+       [:& layout-item-menu
+        {:ids ids
+         :type type
+         :values layout-item-values
+         :is-layout-child? is-layout-child?
+         :is-layout-container? is-layout-container?
+         :shape shape}])
 
      [:& layer-menu {:ids ids
                      :type type

frontend/src/app/main/ui/workspace/sidebar/options/shapes/group.cljs

@@ -62,7 +62,8 @@
          :is-layout-container? false
          :values layout-item-values}])
 
-     [:& constraints-menu {:ids constraint-ids :values constraint-values}]
+     (when (not is-layout-child?)
+       [:& constraints-menu {:ids constraint-ids :values constraint-values}])
      [:& layer-menu {:type type :ids layer-ids :values layer-values}]
 
      (when-not (empty? fill-ids)

frontend/src/app/main/ui/workspace/sidebar/options/shapes/image.cljs

@@ -44,8 +44,9 @@
          :is-layout-child? true
          :shape shape}])
 
-     [:& constraints-menu {:ids ids
-                           :values constraint-values}]
+     (when (not is-layout-child?)
+       [:& constraints-menu {:ids ids
+                             :values constraint-values}])
 
      [:& layer-menu {:ids ids
                      :type type

frontend/src/app/main/ui/workspace/sidebar/options/shapes/multiple.cljs

@@ -34,116 +34,134 @@
 ;;   - text: read it from all the content nodes, and then merging it.
 (def type->read-mode
   {:frame
-   {:measure    :shape
-    :layer      :shape
-    :constraint :shape
-    :fill       :shape
-    :shadow     :children
-    :blur       :children
-    :stroke     :shape
-    :text       :children
-    :exports    :shape}
+   {:measure          :shape
+    :layer            :shape
+    :constraint       :shape
+    :fill             :shape
+    :shadow           :children
+    :blur             :children
+    :stroke           :shape
+    :text             :children
+    :exports          :shape
+    :layout-container :shape
+    :layout-item      :shape}
 
    :group
-   {:measure    :shape
-    :layer      :shape
-    :constraint :shape
-    :fill       :children
-    :shadow     :shape
-    :blur       :shape
-    :stroke     :children
-    :text       :children
-    :exports    :shape}
+   {:measure          :shape
+    :layer            :shape
+    :constraint       :shape
+    :fill             :children
+    :shadow           :shape
+    :blur             :shape
+    :stroke           :children
+    :text             :children
+    :exports          :shape
+    :layout-container :ignore
+    :layout-item      :shape}
 
    :path
-   {:measure    :shape
-    :layer      :shape
-    :constraint :shape
-    :fill       :shape
-    :shadow     :shape
-    :blur       :shape
-    :stroke     :shape
-    :text       :ignore
-    :exports    :shape}
+   {:measure          :shape
+    :layer            :shape
+    :constraint       :shape
+    :fill             :shape
+    :shadow           :shape
+    :blur             :shape
+    :stroke           :shape
+    :text             :ignore
+    :exports          :shape
+    :layout-container :ignore
+    :layout-item      :shape}
 
    :text
-   {:measure    :shape
-    :layer      :shape
-    :constraint :shape
-    :fill       :text
-    :shadow     :shape
-    :blur       :shape
-    :stroke     :shape
-    :text       :text
-    :exports    :shape}
+   {:measure          :shape
+    :layer            :shape
+    :constraint       :shape
+    :fill             :text
+    :shadow           :shape
+    :blur             :shape
+    :stroke           :shape
+    :text             :text
+    :exports          :shape
+    :layout-container :ignore
+    :layout-item      :shape}
 
    :image
-   {:measure    :shape
-    :layer      :shape
-    :constraint :shape
-    :fill       :ignore
-    :shadow     :shape
-    :blur       :shape
-    :stroke     :ignore
-    :text       :ignore
-    :exports    :shape}
+   {:measure          :shape
+    :layer            :shape
+    :constraint       :shape
+    :fill             :ignore
+    :shadow           :shape
+    :blur             :shape
+    :stroke           :ignore
+    :text             :ignore
+    :exports          :shape
+    :layout-container :ignore
+    :layout-item      :shape}
 
    :rect
-   {:measure    :shape
-    :layer      :shape
-    :constraint :shape
-    :fill       :shape
-    :shadow     :shape
-    :blur       :shape
-    :stroke     :shape
-    :text       :ignore
-    :exports    :shape}
+   {:measure          :shape
+    :layer            :shape
+    :constraint       :shape
+    :fill             :shape
+    :shadow           :shape
+    :blur             :shape
+    :stroke           :shape
+    :text             :ignore
+    :exports          :shape
+    :layout-container :ignore
+    :layout-item      :shape}
 
    :circle
-   {:measure    :shape
-    :layer      :shape
-    :constraint :shape
-    :fill       :shape
-    :shadow     :shape
-    :blur       :shape
-    :stroke     :shape
-    :text       :ignore
-    :exports    :shape}
+   {:measure          :shape
+    :layer            :shape
+    :constraint       :shape
+    :fill             :shape
+    :shadow           :shape
+    :blur             :shape
+    :stroke           :shape
+    :text             :ignore
+    :exports          :shape
+    :layout-container :ignore
+    :layout-item      :shape}
 
    :svg-raw
-   {:measure    :shape
-    :layer      :shape
-    :constraint :shape
-    :fill       :shape
-    :shadow     :shape
-    :blur       :shape
-    :stroke     :shape
-    :text       :ignore
-    :exports    :shape}
+   {:measure          :shape
+    :layer            :shape
+    :constraint       :shape
+    :fill             :shape
+    :shadow           :shape
+    :blur             :shape
+    :stroke           :shape
+    :text             :ignore
+    :exports          :shape
+    :layout-container :ignore
+    :layout-item      :shape}
 
    :bool
-   {:measure    :shape
-    :layer      :shape
-    :constraint :shape
-    :fill       :shape
-    :shadow     :shape
-    :blur       :shape
-    :stroke     :shape
-    :text       :ignore
-    :exports    :shape}})
+   {:measure          :shape
+    :layer            :shape
+    :constraint       :shape
+    :fill             :shape
+    :shadow           :shape
+    :blur             :shape
+    :stroke           :shape
+    :text             :ignore
+    :exports          :shape
+    :layout-container :ignore
+    :layout-item      :shape}})
 
 (def group->attrs
-  {:measure     measure-attrs
-   :layer       layer-attrs
-   :constraint  constraint-attrs
-   :fill        fill-attrs
-   :shadow      shadow-attrs
-   :blur        blur-attrs
-   :stroke      stroke-attrs
-   :text        ot/attrs
-   :exports     exports-attrs
-   :layout      layout-container-flex-attrs
-   :layout-item layout-item-attrs})
+  {:measure           measure-attrs
+   :layer             layer-attrs
+   :constraint        constraint-attrs
+   :fill              fill-attrs
+   :shadow            shadow-attrs
+   :blur              blur-attrs
+   :stroke            stroke-attrs
+   :text              ot/attrs
+   :exports           exports-attrs
+   :layout-container  layout-container-flex-attrs
+   :layout-item       layout-item-attrs})
 
 (def shadow-keys [:style :color :offset-x :offset-y :blur :spread])
 
@@ -235,6 +253,10 @@
   [props]
   (let [shapes (unchecked-get props "shapes")
         shapes-with-children (unchecked-get props "shapes-with-children")
+
+        workspace-modifiers (mf/deref refs/workspace-modifiers)
+        shapes (map #(gsh/transform-shape % (get-in workspace-modifiers [(:id %) :modifiers])) shapes)
+
         page-id (unchecked-get props "page-id")
         file-id (unchecked-get props "file-id")
         shared-libs (unchecked-get props "shared-libs")
@@ -254,20 +276,20 @@
         is-layout-child? (mf/deref is-layout-child-ref)
 
         has-text? (contains? all-types :text)
-        
+
         [measure-ids    measure-values]    (get-attrs shapes objects :measure)
 
 
-        [layer-ids       layer-values
-         constraint-ids  constraint-values
-         fill-ids        fill-values
-         shadow-ids      shadow-values
-         blur-ids        blur-values
-         stroke-ids      stroke-values
-         text-ids        text-values
-         exports-ids     exports-values
-         layout-ids      layout-container-values
-         layout-item-ids layout-item-values]
+        [layer-ids            layer-values
+         constraint-ids       constraint-values
+         fill-ids             fill-values
+         shadow-ids           shadow-values
+         blur-ids             blur-values
+         stroke-ids           stroke-values
+         text-ids             text-values
+         exports-ids          exports-values
+         layout-container-ids layout-container-values
+         layout-item-ids      layout-item-values]
         (mf/use-memo
          (mf/deps objects-no-measures)
          (fn []
@@ -282,7 +304,7 @@
              (get-attrs shapes objects-no-measures :stroke)
              (get-attrs shapes objects-no-measures :text)
              (get-attrs shapes objects-no-measures :exports)
-             (get-attrs shapes objects-no-measures :layout)
+             (get-attrs shapes objects-no-measures :layout-container)
              (get-attrs shapes objects-no-measures :layout-item)
              ])))]
 
@@ -291,8 +313,8 @@
        [:& measures-menu {:type type :all-types all-types :ids measure-ids :values measure-values :shape shapes}])
 
      (when (:layout layout-container-values)
-       [:& layout-container-menu {:type type :ids layout-ids :values layout-container-values}])
-     
+       [:& layout-container-menu {:type type :ids layout-container-ids :values layout-container-values}])
+
      (when is-layout-child?
        [:& layout-item-menu
         {:type type
@@ -301,7 +323,7 @@
          :is-layout-container? true
          :values layout-item-values}])
 
-     (when-not (empty? constraint-ids)
+     (when-not (or (empty? constraint-ids) is-layout-child?)
        [:& constraints-menu {:ids constraint-ids :values constraint-values}])
 
      (when-not (empty? layer-ids)

frontend/src/app/main/ui/workspace/sidebar/options/shapes/path.cljs

@@ -43,8 +43,9 @@
                              :is-layout-child? true
                              :is-layout-container? false
                              :shape shape}])
-     [:& constraints-menu {:ids ids
-                           :values constraint-values}]
+     (when (not is-layout-child?)
+       [:& constraints-menu {:ids ids
+                             :values constraint-values}])
      [:& layer-menu {:ids ids
                      :type type
                      :values layer-values}]

frontend/src/app/main/ui/workspace/sidebar/options/shapes/rect.cljs

@@ -44,8 +44,10 @@
          :values layout-item-values
          :is-layout-child? true
          :shape shape}])
-     [:& constraints-menu {:ids ids
-                           :values constraint-values}]
+
+     (when (not is-layout-child?)
+       [:& constraints-menu {:ids ids
+                             :values constraint-values}])
 
      [:& layer-menu {:ids ids
                      :type type

frontend/src/app/main/ui/workspace/sidebar/options/shapes/svg_raw.cljs

@@ -120,8 +120,9 @@
            :is-layout-child? true
            :shape shape}])
 
-       [:& constraints-menu {:ids ids
-                             :values constraint-values}]
+       (when (not is-layout-child?)
+         [:& constraints-menu {:ids ids
+                               :values constraint-values}])
 
        [:& fill-menu {:ids ids
                       :type type

frontend/src/app/main/ui/workspace/sidebar/options/shapes/text.cljs

@@ -78,9 +78,11 @@
          :values layout-item-values
          :is-layout-child? true
          :shape shape}])
-     [:& constraints-menu
-      {:ids ids
-       :values (select-keys shape constraint-attrs)}]
+
+     (when (not is-layout-child?)
+       [:& constraints-menu
+        {:ids ids
+         :values (select-keys shape constraint-attrs)}])
 
      [:& layer-menu {:ids ids
                      :type type

frontend/src/app/main/ui/workspace/viewport.cljs

@@ -23,6 +23,7 @@
    [app.main.ui.workspace.shapes.text.viewport-texts-html :as stvh]
    [app.main.ui.workspace.viewport.actions :as actions]
    [app.main.ui.workspace.viewport.comments :as comments]
+   [app.main.ui.workspace.viewport.debug :as wvd]
    [app.main.ui.workspace.viewport.drawarea :as drawarea]
    [app.main.ui.workspace.viewport.frame-grid :as frame-grid]
    [app.main.ui.workspace.viewport.gradients :as gradients]
@@ -79,8 +80,7 @@
         modifiers         (mf/deref refs/workspace-modifiers)
 
         objects-modified  (mf/with-memo [base-objects modifiers]
-                            (gsh/merge-modifiers base-objects modifiers))
-
+                            (gsh/apply-objects-modifiers base-objects modifiers))
         background        (get options :background clr/canvas)
 
         ;; STATE
@@ -91,6 +91,7 @@
         hover-ids         (mf/use-state nil)
         hover             (mf/use-state nil)
         hover-disabled?   (mf/use-state false)
+        hover-top-frame-id (mf/use-state nil)
         frame-hover       (mf/use-state nil)
         active-frames     (mf/use-state #{})
 
@@ -187,7 +188,7 @@
     (hooks/setup-viewport-size viewport-ref)
     (hooks/setup-cursor cursor alt? mod? space? panning drawing-tool drawing-path? node-editing?)
     (hooks/setup-keyboard alt? mod? space?)
-    (hooks/setup-hover-shapes page-id move-stream base-objects transform selected mod? hover hover-ids @hover-disabled? focus zoom)
+    (hooks/setup-hover-shapes page-id move-stream base-objects transform selected mod? hover hover-ids hover-top-frame-id @hover-disabled? focus zoom)
     (hooks/setup-viewport-modifiers modifiers base-objects)
     (hooks/setup-shortcuts node-editing? drawing-path?)
     (hooks/setup-active-frames base-objects hover-ids selected active-frames zoom transform vbox)
@@ -285,7 +286,7 @@
 
        (when show-frame-outline?
          [:& outline/shape-outlines
-          {:objects base-objects
+          {:objects objects-modified
            :hover #{(->> @hover-ids
                          (filter #(cph/frame-shape? (get base-objects %)))
                          (remove selected)
@@ -336,10 +337,9 @@
        (when show-prototypes?
          [:& widgets/frame-flows
           {:flows (:flows options)
-           :objects base-objects
+           :objects objects-modified
            :selected selected
            :zoom zoom
-           :modifiers modifiers
            :on-frame-enter on-frame-enter
            :on-frame-leave on-frame-leave
            :on-frame-select on-frame-select}])
@@ -348,8 +348,7 @@
          [:& drawarea/draw-area
           {:shape drawing-obj
            :zoom zoom
-           :tool drawing-tool
-           :modifiers modifiers}])
+           :tool drawing-tool}])
 
        (when show-grids?
          [:& frame-grid/frame-grid
@@ -371,9 +370,8 @@
            :zoom zoom
            :page-id page-id
            :selected selected
-           :objects base-objects
-           :focus focus
-           :modifiers modifiers}])
+           :objects objects-modified
+           :focus focus}])
 
        (when show-snap-distance?
          [:& snap-distances/snap-distances
@@ -416,9 +414,21 @@
           {:zoom zoom
            :vbox vbox
            :hover-frame frame-parent
-           :modifiers modifiers
            :disabled-guides? disabled-guides?}])
 
+       ;; DEBUG LAYOUT DROP-ZONES
+       (when (debug? :layout-drop-zones)
+         [:& wvd/debug-drop-zones {:selected-shapes selected-shapes
+                                   :objects objects-modified
+                                   :hover-top-frame-id @hover-top-frame-id
+                                   :zoom zoom}])
+
+       (when (debug? :layout-lines)
+         [:& wvd/debug-layout {:selected-shapes selected-shapes
+                               :objects objects-modified
+                               :hover-top-frame-id @hover-top-frame-id
+                               :zoom zoom}])
+
        (when show-selection-handlers?
          [:g.selection-handlers {:clipPath "url(#clip-handlers)"}
           [:defs

frontend/src/app/main/ui/workspace/viewport/debug.cljs

@@ -0,0 +1,137 @@
+;; This Source Code Form is subject to the terms of the Mozilla Public
+;; License, v. 2.0. If a copy of the MPL was not distributed with this
+;; file, You can obtain one at http://mozilla.org/MPL/2.0/.
+;;
+;; Copyright (c) KALEIDOS INC
+
+(ns app.main.ui.workspace.viewport.debug
+  (:require
+   [app.common.data :as d]
+   [app.common.data.macros :as dm]
+   [app.common.geom.point :as gpt]
+   [app.common.geom.shapes :as gsh]
+   [app.common.geom.shapes.flex-layout :as gsl]
+   [app.common.geom.shapes.points :as gpo]
+   [app.common.pages.helpers :as cph]
+   [app.common.types.shape.layout :as ctl]
+   [cuerdas.core :as str]
+   [rumext.v2 :as mf]))
+
+;; Helper to debug the bounds when set the "hug" content property
+#_(mf/defc debug-layout
+  "Debug component to show the auto-layout drop areas"
+  {::mf/wrap-props false}
+  [props]
+
+  (let [objects            (unchecked-get props "objects")
+        selected-shapes    (unchecked-get props "selected-shapes")
+        hover-top-frame-id (unchecked-get props "hover-top-frame-id")
+
+        selected-frame
+        (when (and (= (count selected-shapes) 1) (= :frame (-> selected-shapes first :type)))
+          (first selected-shapes))
+
+        shape (or selected-frame (get objects hover-top-frame-id))]
+
+    (when (and shape (:layout shape))
+      (let [children (cph/get-immediate-children objects (:id shape))
+            layout-data (gsl/calc-layout-data shape children)
+
+            {pad-top :p1 pad-right :p2 pad-bottom :p3 pad-left :p4} (:layout-padding shape)
+            pad-top (or pad-top 0)
+            pad-right (or pad-right 0)
+            pad-bottom (or pad-bottom 0)
+            pad-left (or pad-left 0)
+
+            layout-bounds (gsl/layout-content-bounds shape children)]
+        [:g.debug-layout {:pointer-events "none"
+                          :transform (gsh/transform-str shape)}
+
+
+         [:rect {:x      (:x layout-bounds)
+                 :y      (:y layout-bounds)
+                 :width  (:width layout-bounds)
+                 :height (:height layout-bounds)
+                 :style  {:stroke "red"
+                          :fill "none"}}]]))))
+
+(mf/defc debug-layout
+  "Debug component to show the auto-layout drop areas"
+  {::mf/wrap-props false}
+  [props]
+
+  (let [objects            (unchecked-get props "objects")
+        zoom               (unchecked-get props "zoom")
+        selected-shapes    (unchecked-get props "selected-shapes")
+        hover-top-frame-id (unchecked-get props "hover-top-frame-id")
+
+        selected-frame
+        (when (and (= (count selected-shapes) 1) (= :frame (-> selected-shapes first :type)))
+          (first selected-shapes))
+
+        shape (or selected-frame (get objects hover-top-frame-id))]
+
+    (when (and shape (ctl/layout? shape))
+      (let [row? (ctl/row? shape)
+            col? (ctl/col? shape)
+
+            children (cph/get-immediate-children objects (:id shape))
+            layout-data (gsl/calc-layout-data shape children)
+
+            layout-bounds (:layout-bounds layout-data)
+            xv   #(gpo/start-hv layout-bounds %)
+            yv   #(gpo/start-vv layout-bounds %)]
+        [:g.debug-layout {:pointer-events "none"}
+         (for [[idx {:keys [start-p line-width line-height layout-gap-row layout-gap-col num-children]}] (d/enumerate (:layout-lines layout-data))]
+           (let [line-width (if row? (+ line-width (* (dec num-children) layout-gap-row)) line-width)
+                 line-height (if col? (+ line-height (* (dec num-children) layout-gap-col)) line-height)
+
+                 points [start-p
+                         (-> start-p (gpt/add (xv line-width)))
+                         (-> start-p (gpt/add (xv line-width)) (gpt/add (yv line-height)))
+                         (-> start-p (gpt/add (yv line-height)))
+                         ]]
+             [:g.layout-line {:key (dm/str "line-" idx)}
+              [:polygon {:points (->> points (map #(dm/fmt "%, %" (:x %) (:y %))) (str/join " "))
+                         :style {:stroke "red" :stroke-width (/ 2 zoom) :stroke-dasharray (dm/str (/ 10 zoom) " " (/ 5 zoom))}}]]))]))))
+
+(mf/defc debug-drop-zones
+  "Debug component to show the auto-layout drop areas"
+  {::mf/wrap-props false}
+  [props]
+
+  (let [objects            (unchecked-get props "objects")
+        zoom               (unchecked-get props "objects")
+        selected-shapes    (unchecked-get props "selected-shapes")
+        hover-top-frame-id (unchecked-get props "hover-top-frame-id")
+
+        selected-frame
+        (when (and (= (count selected-shapes) 1) (= :frame (-> selected-shapes first :type)))
+          (first selected-shapes))
+
+        shape (or selected-frame (get objects hover-top-frame-id))]
+
+    (when (and shape (:layout shape))
+      (let [children (cph/get-immediate-children objects (:id shape))
+            layout-data (gsl/calc-layout-data shape children)
+            drop-areas (gsl/layout-drop-areas shape layout-data children)]
+        [:g.debug-layout {:pointer-events "none"
+                          :transform (gsh/transform-str shape)}
+         (for [[idx drop-area] (d/enumerate drop-areas)]
+           [:g.drop-area {:key (dm/str "drop-area-" idx)}
+            [:rect {:x (:x drop-area)
+                    :y (:y drop-area)
+                    :width (:width drop-area)
+                    :height (:height drop-area)
+                    :style {:fill "blue"
+                            :fill-opacity 0.3
+                            :stroke "red"
+                            :stroke-width (/ zoom 1)
+                            :stroke-dasharray (dm/str (/ 3 zoom) " " (/ 6 zoom))}}]
+            [:text {:x (:x drop-area)
+                    :y (:y drop-area)
+                    :width (:width drop-area)
+                    :height (:height drop-area)
+                    :alignment-baseline "hanging"
+                    :fill "black"}
+             (:index drop-area)]])]))))

frontend/src/app/main/ui/workspace/viewport/drawarea.cljs

@@ -7,7 +7,6 @@
 (ns app.main.ui.workspace.viewport.drawarea
   "Drawing components."
   (:require
-   [app.common.geom.shapes :as gsh]
    [app.common.math :as mth]
    [app.main.ui.shapes.path :refer [path-shape]]
    [app.main.ui.workspace.shapes :as shapes]
@@ -22,7 +21,7 @@
 
   [:g.draw-area
    [:g {:style {:pointer-events "none"}}
-    [:& shapes/shape-wrapper {:shape (gsh/transform-shape shape)}]]
+    [:& shapes/shape-wrapper {:shape shape}]]
 
    (case tool
      :path      [:& path-editor {:shape shape :zoom zoom}]
@@ -31,7 +30,7 @@
 
 (mf/defc generic-draw-area
   [{:keys [shape zoom]}]
-  (let [{:keys [x y width height]} (:selrect (gsh/transform-shape shape))]
+  (let [{:keys [x y width height]} (:selrect shape)]
     (when (and x y
                (not (mth/nan? x))
                (not (mth/nan? y)))

frontend/src/app/main/ui/workspace/viewport/frame_grid.cljs

@@ -7,7 +7,6 @@
 (ns app.main.ui.workspace.viewport.frame-grid
   (:require
    [app.common.data :as d]
-   [app.common.geom.shapes :as gsh]
    [app.common.math :as mth]
    [app.common.types.shape-tree :as ctst]
    [app.common.uuid :as uuid]
@@ -138,4 +137,4 @@
                   (or (empty? focus) (contains? focus (:id frame))))
          [:& grid-display-frame {:key (str "grid-" (:id frame))
                                  :zoom zoom
-                                 :frame (gsh/transform-shape frame)}]))]))
+                                 :frame frame}]))]))

frontend/src/app/main/ui/workspace/viewport/guides.cljs

@@ -278,7 +278,7 @@
                 frame]} (use-guide handle-change-position get-hover-frame zoom guide)
 
         base-frame (or frame hover-frame)
-        frame (gsh/transform-shape (merge base-frame frame-modifier))
+        frame (gsh/transform-shape base-frame frame-modifier)
 
         move-vec (gpt/to-vec (gpt/point (:x base-frame) (:y base-frame))
                              (gpt/point (:x frame) (:y frame)))

frontend/src/app/main/ui/workspace/viewport/hooks.cljs

@@ -11,6 +11,7 @@
    [app.common.pages :as cp]
    [app.common.pages.helpers :as cph]
    [app.common.types.shape-tree :as ctt]
+   [app.common.uuid :as uuid]
    [app.main.data.shortcuts :as dsc]
    [app.main.data.workspace :as dw]
    [app.main.data.workspace.path.shortcuts :as psc]
@@ -104,7 +105,8 @@
             (some #(cph/is-parent? objects % group-id))
             (not))))
 
-(defn setup-hover-shapes [page-id move-stream objects transform selected mod? hover hover-ids hover-disabled? focus zoom]
+(defn setup-hover-shapes
+  [page-id move-stream objects transform selected mod? hover hover-ids hover-top-frame-id hover-disabled? focus zoom]
   (let [;; We use ref so we don't recreate the stream on a change
         zoom-ref (mf/use-ref zoom)
         mod-ref (mf/use-ref @mod?)
@@ -143,9 +145,10 @@
                   (rx/map #(deref last-point-ref)))
 
              (->> move-stream
+                  (rx/tap #(reset! last-point-ref %))
                   ;; When transforming shapes we stop querying the worker
                   (rx/merge-map query-point)
-                  (rx/tap #(reset! last-point-ref %))))))]
+                  ))))]
 
     ;; Refresh the refs on a value change
     (mf/use-effect
@@ -213,7 +216,8 @@
                   (first)
                   (get objects))]
          (reset! hover hover-shape)
-         (reset! hover-ids ids))))))
+         (reset! hover-ids ids)
+         (reset! hover-top-frame-id (ctt/top-nested-frame objects (deref last-point-ref))))))))
 
 (defn setup-viewport-modifiers
   [modifiers objects]
@@ -221,7 +225,7 @@
         (mf/use-memo
          (mf/deps objects)
          #(ctt/get-root-shapes-ids objects))
-        modifiers (select-keys modifiers root-frame-ids)]
+        modifiers (select-keys modifiers (conj root-frame-ids uuid/zero))]
     (sfd/use-dynamic-modifiers objects globals/document modifiers)))
 
 (defn inside-vbox [vbox objects frame-id]

frontend/src/app/main/ui/workspace/viewport/interactions.cljs

@@ -9,7 +9,6 @@
   (:require
    [app.common.data :as d]
    [app.common.data.macros :as dm]
-   [app.common.geom.shapes :as gsh]
    [app.common.pages.helpers :as cph]
    [app.common.types.shape.interactions :as ctsi]
    [app.main.data.workspace :as dw]
@@ -254,13 +253,11 @@
 (mf/defc interactions
   [{:keys [current-transform objects zoom selected hover-disabled?] :as props}]
   (let [active-shapes (into []
-                            (comp (filter #(seq (:interactions %)))
-                                  (map gsh/transform-shape))
+                            (comp (filter #(seq (:interactions %))))
                             (vals objects))
 
         selected-shapes (into []
-                              (comp (map (d/getf objects))
-                                    (map gsh/transform-shape))
+                              (map (d/getf objects))
                               selected)
 
         {:keys [editing-interaction-index

frontend/src/app/main/ui/workspace/viewport/outline.cljs

@@ -72,7 +72,7 @@
                  "var(--color-primary)" "var(--color-component-highlight)")]
     (for [shape shapes]
       [:& outline {:key (str "outline-" (:id shape))
-                   :shape (gsh/transform-shape shape)
+                   :shape shape
                    :zoom zoom
                    :color color}])))
 

frontend/src/app/main/ui/workspace/viewport/selection.cljs

@@ -341,7 +341,6 @@
   (let [shape (mf/use-memo
                (mf/deps shapes)
                #(->> shapes
-                     (map gsh/transform-shape)
                      (gsh/selection-rect)
                      (cts/setup-shape)))
         on-resize
@@ -369,7 +368,6 @@
   (let [shape (mf/use-memo
                (mf/deps shapes)
                #(->> shapes
-                     (map gsh/transform-shape)
                      (gsh/selection-rect)
                      (cts/setup-shape)))]
 
@@ -384,7 +382,6 @@
 (mf/defc single-handlers
   [{:keys [shape zoom color disable-handlers] :as props}]
   (let [shape-id (:id shape)
-        shape (gsh/transform-shape shape)
 
         on-resize
         (fn [current-position _initial-position event]
@@ -408,14 +405,13 @@
 
 (mf/defc single-selection
   [{:keys [shape zoom color disable-handlers on-move-selected on-context-menu] :as props}]
-  (let [shape (gsh/transform-shape shape)]
-    [:& controls-selection
-     {:shape shape
-      :zoom zoom
-      :color color
-      :disable-handlers disable-handlers
-      :on-move-selected on-move-selected
-      :on-context-menu on-context-menu}]))
+  [:& controls-selection
+   {:shape shape
+    :zoom zoom
+    :color color
+    :disable-handlers disable-handlers
+    :on-move-selected on-move-selected
+    :on-context-menu on-context-menu}])
 
 (mf/defc selection-area
   {::mf/wrap [mf/memo]}

frontend/src/app/main/ui/workspace/viewport/snap_distances.cljs

@@ -10,6 +10,7 @@
    [app.common.geom.shapes :as gsh]
    [app.common.math :as mth]
    [app.common.pages.helpers :as cph]
+   [app.common.types.shape.layout :as ctl]
    [app.main.refs :as refs]
    [app.main.ui.formats :as fmt]
    [app.main.worker :as uw]
@@ -272,18 +273,20 @@
         frame-id        (-> selected-shapes first :frame-id)
         frame           (mf/deref (refs/object-by-id frame-id))
         selrect         (gsh/selection-rect selected-shapes)]
-    [:g.distance
-     [:& shape-distance
-      {:selrect selrect
-       :page-id page-id
-       :frame frame
-       :zoom zoom
-       :coord :x
-       :selected selected}]
-     [:& shape-distance
-      {:selrect selrect
-       :page-id page-id
-       :frame frame
-       :zoom zoom
-       :coord :y
-       :selected selected}]]))
+
+    (when-not (ctl/layout? frame)
+      [:g.distance
+       [:& shape-distance
+        {:selrect selrect
+         :page-id page-id
+         :frame frame
+         :zoom zoom
+         :coord :x
+         :selected selected}]
+       [:& shape-distance
+        {:selrect selrect
+         :page-id page-id
+         :frame frame
+         :zoom zoom
+         :coord :y
+         :selected selected}]])))

frontend/src/app/main/ui/workspace/viewport/snap_points.cljs

@@ -10,6 +10,7 @@
    [app.common.geom.shapes :as gsh]
    [app.common.pages.helpers :as cph]
    [app.common.spec :as us]
+   [app.common.types.shape.layout :as ctl]
    [app.main.snap :as snap]
    [app.util.geom.snap-points :as sp]
    [beicon.core :as rx]
@@ -50,20 +51,14 @@
           :opacity line-opacity}])
 
 (defn get-snap
-  [coord {:keys [shapes page-id remove-snap? zoom modifiers]}]
-  (let [shapes-sr
-        (->> shapes
-             ;; Merge modifiers into shapes
-             (map #(merge % (get modifiers (:id %))))
-             ;; Create the bounding rectangle for the shapes
-             (gsh/selection-rect))
+  [coord {:keys [shapes page-id remove-snap? zoom]}]
+  (let [bounds (gsh/selection-rect shapes)
+        frame-id  (snap/snap-frame-id shapes)]
 
-        frame-id (snap/snap-frame-id shapes)]
-
-    (->> (rx/of shapes-sr)
+    (->> (rx/of bounds)
          (rx/flat-map
-          (fn [selrect]
-            (->> (sp/selrect-snap-points selrect)
+          (fn [bounds]
+            (->> (sp/selrect-snap-points bounds)
                  (map #(vector frame-id %)))))
 
          (rx/flat-map
@@ -159,7 +154,7 @@
 
 (mf/defc snap-points
   {::mf/wrap [mf/memo]}
-  [{:keys [layout zoom objects selected page-id drawing modifiers focus] :as props}]
+  [{:keys [layout zoom objects selected page-id drawing focus] :as props}]
   (us/assert set? selected)
   (let [shapes  (into [] (keep (d/getf objects)) selected)
 
@@ -178,10 +173,11 @@
                (and (= type :layout) (= grid :square))
                (= type :guide))))
 
-        shapes    (if drawing [drawing] shapes)]
-    [:& snap-feedback {:shapes shapes
-                       :page-id page-id
-                       :remove-snap? remove-snap?
-                       :zoom zoom
-                       :modifiers modifiers}]))
+        shapes    (if drawing [drawing] shapes)
+        frame-id (snap/snap-frame-id shapes)]
+    (when-not (ctl/layout? objects frame-id)
+      [:& snap-feedback {:shapes shapes
+                         :page-id page-id
+                         :remove-snap? remove-snap?
+                         :zoom zoom}])))
 

frontend/src/app/main/ui/workspace/viewport/utils.cljs

@@ -53,9 +53,7 @@
 (defn text-transform
   [{:keys [x y]} zoom]
   (let [inv-zoom (/ 1 zoom)]
-    (str
-     "scale(" inv-zoom ", " inv-zoom ") "
-     "translate(" (* zoom x) ", " (* zoom y) ")")))
+    (dm/fmt "scale(%, %) translate(%, %)" inv-zoom inv-zoom (* zoom x) (* zoom y))))
 
 (defn title-transform [frame zoom]
   (let [frame-transform (gsh/transform-str frame {:no-flip true})

frontend/src/app/main/ui/workspace/viewport/widgets.cljs

@@ -9,7 +9,6 @@
    [app.common.data :as d]
    [app.common.data.macros :as dm]
    [app.common.geom.point :as gpt]
-   [app.common.geom.shapes :as gsh]
    [app.common.types.shape-tree :as ctt]
    [app.common.uuid :as uuid]
    [app.main.data.workspace :as dw]
@@ -22,6 +21,7 @@
    [app.main.ui.workspace.viewport.path-actions :refer [path-actions]]
    [app.main.ui.workspace.viewport.utils :as vwu]
    [app.util.dom :as dom]
+   [debug :refer [debug?]]
    [rumext.v2 :as mf]))
 
 (mf/defc pixel-grid
@@ -35,8 +35,8 @@
                :pattern-units "userSpaceOnUse"}
      [:path {:d "M 1 0 L 0 0 0 1"
              :style {:fill "none"
-                     :stroke "var(--color-info)"
-                     :stroke-opacity "0.2"
+                     :stroke (if (debug? :pixel-grid) "red" "var(--color-info)")
+                     :stroke-opacity (if (debug? :pixel-grid) 1 "0.2")
                      :stroke-width (str (/ 1 zoom))}}]]]
    [:rect {:x (:x vbox)
            :y (:y vbox)
@@ -182,8 +182,8 @@
                           :on-frame-select on-frame-select}]))]))
 
 (mf/defc frame-flow
-  [{:keys [flow frame modifiers selected? zoom on-frame-enter on-frame-leave on-frame-select]}]
-  (let [{:keys [x y]} (gsh/transform-shape frame)
+  [{:keys [flow frame selected? zoom on-frame-enter on-frame-leave on-frame-select]}]
+  (let [{:keys [x y]} frame
         flow-pos (gpt/point x (- y (/ 35 zoom)))
 
         on-mouse-down
@@ -217,9 +217,7 @@
                      :y -15
                      :width 100000
                      :height 24
-                     :transform (str (when (and selected? modifiers)
-                                       (str (:displacement modifiers) " " ))
-                                     (vwu/text-transform flow-pos zoom))}
+                     :transform (vwu/text-transform flow-pos zoom)}
      [:div.flow-badge {:class (dom/classnames :selected selected?)}
       [:div.content {:on-mouse-down on-mouse-down
                      :on-double-click on-double-click
@@ -234,7 +232,6 @@
   (let [flows     (unchecked-get props "flows")
         objects   (unchecked-get props "objects")
         zoom      (unchecked-get props "zoom")
-        modifiers (unchecked-get props "modifiers")
         selected  (or (unchecked-get props "selected") #{})
 
         on-frame-enter  (unchecked-get props "on-frame-enter")
@@ -248,7 +245,6 @@
                          :frame frame
                          :selected? (contains? selected (:id frame))
                          :zoom zoom
-                         :modifiers modifiers
                          :on-frame-enter on-frame-enter
                          :on-frame-leave on-frame-leave
                          :on-frame-select on-frame-select}]))]))

frontend/src/app/util/geom/snap_points.cljs

@@ -29,10 +29,9 @@
 (defn shape-snap-points
   [{:keys [hidden blocked] :as shape}]
   (when (and (not blocked) (not hidden))
-    (let [shape (gsh/transform-shape shape)]
-      (case (:type shape)
-        :frame (-> shape :points gsh/points->selrect frame-snap-points)
-        (into #{(gsh/center-shape shape)} (:points shape))))))
+    (case (:type shape)
+      :frame (-> shape :points gsh/points->selrect frame-snap-points)
+      (into #{(gsh/center-shape shape)} (:points shape)))))
 
 (defn guide-snap-points
   [guide frame]

frontend/src/app/util/snap_data.cljs

@@ -13,6 +13,7 @@
    [app.common.pages.diff :as diff]
    [app.common.pages.helpers :as cph]
    [app.common.types.shape-tree :as ctst]
+   [app.common.types.shape.layout :as ctl]
    [app.common.uuid :as uuid]
    [app.util.geom.grid :as gg]
    [app.util.geom.snap-points :as snap]
@@ -70,7 +71,7 @@
            (mapv grid->snap)))))
 
 (defn- add-frame
-  [page-data frame]
+  [objects page-data frame]
   (let [frame-id (:id frame)
         parent-id (:parent-id frame)
         frame-data (->> (snap/shape-snap-points frame)
@@ -79,21 +80,24 @@
                                           :pt %)))
         grid-x-data (get-grids-snap-points frame :x)
         grid-y-data (get-grids-snap-points frame :y)]
-    (-> page-data
-        ;; Update root frame information
-        (assoc-in [uuid/zero :objects-data frame-id] frame-data)
-        (update-in [parent-id :x] (make-insert-tree-data frame-data :x))
-        (update-in [parent-id :y] (make-insert-tree-data frame-data :y))
 
-        ;; Update frame information
-        (assoc-in  [frame-id :objects-data frame-id] (d/concat-vec frame-data grid-x-data grid-y-data))
-        (update-in [frame-id :x] #(or % (rt/make-tree)))
-        (update-in [frame-id :y] #(or % (rt/make-tree)))
-        (update-in [frame-id :x] (make-insert-tree-data (d/concat-vec frame-data grid-x-data) :x))
-        (update-in [frame-id :y] (make-insert-tree-data (d/concat-vec frame-data grid-y-data) :y)))))
+    (cond-> page-data
+      (not (ctl/layout-child? objects frame))
+
+      (-> ;; Update root frame information
+       (assoc-in [uuid/zero :objects-data frame-id] frame-data)
+       (update-in [parent-id :x] (make-insert-tree-data frame-data :x))
+       (update-in [parent-id :y] (make-insert-tree-data frame-data :y))
+
+       ;; Update frame information
+       (assoc-in  [frame-id :objects-data frame-id] (d/concat-vec frame-data grid-x-data grid-y-data))
+       (update-in [frame-id :x] #(or % (rt/make-tree)))
+       (update-in [frame-id :y] #(or % (rt/make-tree)))
+       (update-in [frame-id :x] (make-insert-tree-data (d/concat-vec frame-data grid-x-data) :x))
+       (update-in [frame-id :y] (make-insert-tree-data (d/concat-vec frame-data grid-y-data) :y))))))
 
 (defn- add-shape
-  [page-data shape]
+  [objects page-data shape]
   (let [frame-id    (:frame-id shape)
         snap-points (snap/shape-snap-points shape)
         shape-data  (->> snap-points
@@ -101,11 +105,11 @@
                                  :type :shape
                                  :id (:id shape)
                                  :pt %)))]
-    (-> page-data
-        (assoc-in [frame-id :objects-data (:id shape)] shape-data)
-        (update-in [frame-id :x] (make-insert-tree-data shape-data :x))
-        (update-in [frame-id :y] (make-insert-tree-data shape-data :y)))))
-
+    (cond-> page-data
+      (not (ctl/layout-child? objects shape))
+      (-> (assoc-in [frame-id :objects-data (:id shape)] shape-data)
+          (update-in [frame-id :x] (make-insert-tree-data shape-data :x))
+          (update-in [frame-id :y] (make-insert-tree-data shape-data :y))))))
 
 (defn- add-guide
   [objects page-data guide]
@@ -164,22 +168,22 @@
           (update-in [:guides (:axis guide)] (make-delete-tree-data guide-data (:axis guide)))))))
 
 (defn- update-frame
-  [page-data [_ new-frame]]
+  [objects page-data [_ new-frame]]
   (let [frame-id (:id new-frame)
         root-data (get-in page-data [uuid/zero :objects-data frame-id])
         frame-data (get-in page-data [frame-id :objects-data frame-id])]
-    (-> page-data
-        (update-in [uuid/zero :x] (make-delete-tree-data root-data :x))
-        (update-in [uuid/zero :y] (make-delete-tree-data root-data :y))
-        (update-in [frame-id :x]  (make-delete-tree-data frame-data :x))
-        (update-in [frame-id :y]  (make-delete-tree-data frame-data :y))
-        (add-frame new-frame))))
+    (as-> page-data $
+      (update-in $ [uuid/zero :x] (make-delete-tree-data root-data :x))
+      (update-in $ [uuid/zero :y] (make-delete-tree-data root-data :y))
+      (update-in $ [frame-id :x]  (make-delete-tree-data frame-data :x))
+      (update-in $ [frame-id :y]  (make-delete-tree-data frame-data :y))
+      (add-frame objects $ new-frame))))
 
 (defn- update-shape
-  [page-data [old-shape new-shape]]
-  (-> page-data
-      (remove-shape old-shape)
-      (add-shape new-shape)))
+  [objects page-data [old-shape new-shape]]
+  (as-> page-data $
+    (remove-shape $ old-shape)
+    (add-shape objects $ new-shape)))
 
 (defn- update-guide
   [objects page-data [old-guide new-guide]]
@@ -205,8 +209,8 @@
         page-data
         (as-> {} $
           (add-root-frame $)
-          (reduce add-frame $ frames)
-          (reduce add-shape $ shapes)
+          (reduce (partial add-frame objects) $ frames)
+          (reduce (partial add-shape objects) $ shapes)
           (reduce (partial add-guide objects) $ guides))]
     (assoc snap-data (:id page) page-data)))
 
@@ -233,16 +237,16 @@
                     (diff/calculate-page-diff old-page page snap-attrs)]
 
                 (as-> page-data $
-                  (reduce update-shape   $ change-frame-shapes)
+                  (reduce (partial update-shape objects) $ change-frame-shapes)
                   (reduce remove-frame   $ removed-frames)
                   (reduce remove-shape   $ removed-shapes)
-                  (reduce update-frame   $ updated-frames)
-                  (reduce update-shape   $ updated-shapes)
-                  (reduce add-frame      $ new-frames)
-                  (reduce add-shape      $ new-shapes)
-                  (reduce remove-guide   $ removed-guides)
+                  (reduce (partial update-frame objects) $ updated-frames)
+                  (reduce (partial update-shape objects) $ updated-shapes)
+                  (reduce (partial add-frame objects)    $ new-frames)
+                  (reduce (partial add-shape objects)    $ new-shapes)
 
                   ;; Guides functions. Need objects to get its frame data
+                  (reduce remove-guide                     $ removed-guides)
                   (reduce (partial update-guide objects)   $ change-frame-guides)
                   (reduce (partial update-guide objects)   $ updated-guides)
                   (reduce (partial add-guide objects)      $ new-guides)))))

frontend/src/debug.cljs

@@ -67,6 +67,15 @@
 
     ;; Disable frame thumbnails
     :disable-frame-thumbnails
+
+    ;; Enable a widget to show the auto-layout drop-zones
+    :layout-drop-zones
+
+    ;; Display the layout lines
+    :layout-lines
+
+    ;; Makes the pixel grid red so its more visibile
+    :pixel-grid
     })
 
 ;; These events are excluded when we activate the :events flag
@@ -74,7 +83,7 @@
   #{:app.main.data.workspace.notifications/handle-pointer-update
     :app.main.data.workspace.selection/change-hover-state})
 
-(defonce ^:dynamic *debug* (atom #{#_:events #_:text-outline}))
+(defonce ^:dynamic *debug* (atom #{#_:events}))
 
 (defn debug-all! [] (reset! *debug* debug-options))
 (defn debug-none! [] (reset! *debug* #{}))
@@ -294,9 +303,16 @@
         num-nodes (->> (dom/seq-nodes root-node) count)]
     #js {:number num-nodes}))
 
-#_(defn modif->js
+(defn modif->js
   [modif-tree objects]
   (clj->js (into {}
                  (map (fn [[k v]]
                         [(get-in objects [k :name]) v]))
                  modif-tree)))
+
+(defn ^:export dump-modifiers
+  []
+  (let [page-id (get @st/state :current-page-id)
+        objects (get-in @st/state [:workspace-data :pages-index page-id :objects])]
+    (.log js/console (modif->js (:workspace-modifiers @st/state) objects)))
+  nil)

frontend/translations/de.po

@@ -3827,19 +3827,19 @@ msgid "workspace.options.layout-item.advanced-ops"
 msgstr "Erweiterte Optionen"
 
 #: src/app/main/ui/workspace/sidebar/options/menus/layout_item.cljs
-msgid "workspace.options.layout-item.layout-max-h"
+msgid "workspace.options.layout-item.layout-item-max-h"
 msgstr "Max.Höhe"
 
 #: src/app/main/ui/workspace/sidebar/options/menus/layout_item.cljs
-msgid "workspace.options.layout-item.layout-max-w"
+msgid "workspace.options.layout-item.layout-item-max-w"
 msgstr "Max.Breite"
 
 #: src/app/main/ui/workspace/sidebar/options/menus/layout_item.cljs
-msgid "workspace.options.layout-item.layout-min-h"
+msgid "workspace.options.layout-item.layout-item-min-h"
 msgstr "Min.Höhe"
 
 #: src/app/main/ui/workspace/sidebar/options/menus/layout_item.cljs
-msgid "workspace.options.layout-item.layout-min-w"
+msgid "workspace.options.layout-item.layout-item-min-w"
 msgstr "Min.Breite"
 
 #: src/app/main/ui/workspace/sidebar/options/menus/layout_item.cljs
@@ -3847,19 +3847,19 @@ msgid "workspace.options.layout-item.title"
 msgstr "Elementgröße ändern"
 
 #: src/app/main/ui/workspace/sidebar/options/menus/layout_item.cljs
-msgid "workspace.options.layout-item.title.layout-max-h"
+msgid "workspace.options.layout-item.title.layout-item-max-h"
 msgstr "Maximale Höhe"
 
 #: src/app/main/ui/workspace/sidebar/options/menus/layout_item.cljs
-msgid "workspace.options.layout-item.title.layout-max-w"
+msgid "workspace.options.layout-item.title.layout-item-max-w"
 msgstr "Maximale Breite"
 
 #: src/app/main/ui/workspace/sidebar/options/menus/layout_item.cljs
-msgid "workspace.options.layout-item.title.layout-min-h"
+msgid "workspace.options.layout-item.title.layout-item-min-h"
 msgstr "Mindesthöhe"
 
 #: src/app/main/ui/workspace/sidebar/options/menus/layout_item.cljs
-msgid "workspace.options.layout-item.title.layout-min-w"
+msgid "workspace.options.layout-item.title.layout-item-min-w"
 msgstr "Mindestbreite"
 
 #: src/app/main/ui/workspace/sidebar/options/menus/layout.cljs
@@ -4701,4 +4701,4 @@ msgid "workspace.updates.update"
 msgstr "Aktualisieren"
 
 msgid "workspace.viewport.click-to-close-path"
-msgstr "Klicken Sie, um den Pfad zu schließen"
+msgstr "Klicken Sie, um den Pfad zu schließen"

frontend/translations/en.po

@@ -3490,35 +3490,35 @@ msgid "workspace.options.layout-item.advanced-ops"
 msgstr "Advanced options"
 
 #: src/app/main/ui/workspace/sidebar/options/menus/layout_item.cljs
-msgid "workspace.options.layout-item.layout-max-h"
+msgid "workspace.options.layout-item.layout-item-max-h"
 msgstr "Max.Height"
 
 #: src/app/main/ui/workspace/sidebar/options/menus/layout_item.cljs
-msgid "workspace.options.layout-item.layout-max-w"
+msgid "workspace.options.layout-item.layout-item-max-w"
 msgstr "Max.Width"
 
 #: src/app/main/ui/workspace/sidebar/options/menus/layout_item.cljs
-msgid "workspace.options.layout-item.layout-min-h"
+msgid "workspace.options.layout-item.layout-item-min-h"
 msgstr "Min.Height"
 
 #: src/app/main/ui/workspace/sidebar/options/menus/layout_item.cljs
-msgid "workspace.options.layout-item.layout-min-w"
+msgid "workspace.options.layout-item.layout-item-min-w"
 msgstr "Min.Width"
 
 #: src/app/main/ui/workspace/sidebar/options/menus/layout_item.cljs
-msgid "workspace.options.layout-item.title.layout-max-h"
+msgid "workspace.options.layout-item.title.layout-item-max-h"
 msgstr "Maximum height"
 
 #: src/app/main/ui/workspace/sidebar/options/menus/layout_item.cljs
-msgid "workspace.options.layout-item.title.layout-max-w"
+msgid "workspace.options.layout-item.title.layout-item-max-w"
 msgstr "Maximum width"
 
 #: src/app/main/ui/workspace/sidebar/options/menus/layout_item.cljs
-msgid "workspace.options.layout-item.title.layout-min-h"
+msgid "workspace.options.layout-item.title.layout-item-min-h"
 msgstr "Minimum height"
 
 #: src/app/main/ui/workspace/sidebar/options/menus/layout_item.cljs
-msgid "workspace.options.layout-item.title.layout-min-w"
+msgid "workspace.options.layout-item.title.layout-item-min-w"
 msgstr "Minimum width"
 
 #: src/app/main/ui/workspace/sidebar/options/menus/layout.cljs
@@ -4077,6 +4077,14 @@ msgstr "Update main components"
 msgid "workspace.shape.menu.update-main"
 msgstr "Update main component"
 
+#: src/app/main/ui/workspace/context_menu.cljs
+msgid "workspace.shape.menu.add-flex"
+msgstr "Add layout flex"
+
+#: src/app/main/ui/workspace/context_menu.cljs
+msgid "workspace.shape.menu.remove-flex"
+msgstr "Remove layout flex"
+
 msgid "workspace.sidebar.collapse"
 msgstr "Collapse sidebar"