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penpot/src/uxbox/ui/workspace/base.cljs
2016-06-12 13:26:56 +03:00

128 lines
3.1 KiB
Clojure

;; 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) 2015-2016 Andrey Antukh <niwi@niwi.nz>
;; Copyright (c) 2015-2016 Juan de la Cruz <delacruzgarciajuan@gmail.com>
(ns uxbox.ui.workspace.base
(:require [beicon.core :as rx]
[lentes.core :as l]
[uxbox.rstore :as rs]
[uxbox.state :as st]
[uxbox.state.project :as stpr]
[uxbox.data.workspace :as dw]
[uxbox.data.shapes :as uds]
[uxbox.util.geom.point :as gpt]
[uxbox.util.lens :as ul]
[goog.events :as events])
(:import goog.events.EventType))
;; --- Lenses
(def ^:const workspace-l
(as-> (l/in [:workspace]) $
(l/focus-atom $ st/state)))
(def ^:const project-l
(letfn [(getter [state]
(let [project (get-in state [:workspace :project])]
(get-in state [:projects-by-id project])))]
(as-> (l/getter getter) $
(l/focus-atom $ st/state))))
(def ^:const page-l
(letfn [(getter [state]
(let [page (get-in state [:workspace :page])]
(get-in state [:pages-by-id page])))]
(as-> (ul/getter getter) $
(l/focus-atom $ st/state))))
(def ^:const selected-shapes-l
(as-> (l/in [:selected]) $
(l/focus-atom $ workspace-l)))
(def ^:const toolboxes-l
(as-> (l/in [:toolboxes]) $
(l/focus-atom $ workspace-l)))
(def ^:const flags-l
(as-> (l/in [:flags]) $
(l/focus-atom $ workspace-l)))
(def ^:const shapes-by-id-l
(as-> (l/key :shapes-by-id) $
(l/focus-atom $ st/state)))
(def ^:const zoom-l
(-> (l/in [:workspace :zoom])
(l/focus-atom st/state)))
(def ^:const alignment-l
(letfn [(getter [flags]
(and (contains? flags :grid/indexed)
(contains? flags :grid/alignment)
(contains? flags :grid)))]
(-> (l/getter getter)
(l/focus-atom flags-l))))
;; --- Scroll Stream
(defonce scroll-b (rx/bus))
(defonce scroll-s
(as-> scroll-b $
(rx/sample 10 $)
(rx/merge $ (rx/of (gpt/point)))
(rx/dedupe $)))
(defonce scroll-a
(rx/to-atom scroll-s))
;; --- Mouse Position Stream
(defonce mouse-b (rx/bus))
(defonce mouse-s
(rx/dedupe mouse-b))
(defonce mouse-canvas-s
(->> mouse-s
(rx/map :canvas-coords)
(rx/share)))
(defonce mouse-canvas-a
(rx/to-atom mouse-canvas-s))
(defonce mouse-viewport-s
(->> mouse-s
(rx/map :viewport-coords)
(rx/share)))
(defonce mouse-viewport-a
(rx/to-atom mouse-viewport-s))
(defonce mouse-absolute-s
(->> mouse-s
(rx/map :window-coords)
(rx/share)))
(defonce mouse-ctrl-s
(->> mouse-s
(rx/map :ctrl)
(rx/share)))
(defn- coords-delta
[[old new]]
(gpt/subtract new old))
(defonce mouse-delta-s
(->> mouse-viewport-s
(rx/sample 10)
(rx/map #(gpt/divide % @zoom-l))
(rx/mapcat (fn [point]
(if @alignment-l
(uds/align-point point)
(rx/of point))))
(rx/buffer 2 1)
(rx/map coords-delta)
(rx/share)))