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penpot/frontend/src/app/main/ui/viewer.cljs
2021-02-15 12:49:54 +01:00

281 lines
9.1 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/.
;;
;; This Source Code Form is "Incompatible With Secondary Licenses", as
;; defined by the Mozilla Public License, v. 2.0.
;;
;; Copyright (c) 2020 UXBOX Labs SL
(ns app.main.ui.viewer
(:require
[app.common.data :as d]
[app.common.exceptions :as ex]
[app.common.geom.matrix :as gmt]
[app.common.geom.point :as gpt]
[app.common.geom.shapes :as geom]
[app.common.pages :as cp]
[app.main.data.comments :as dcm]
[app.main.data.viewer :as dv]
[app.main.data.viewer.shortcuts :as sc]
[app.main.refs :as refs]
[app.main.store :as st]
[app.main.ui.comments :as cmt]
[app.main.ui.components.fullscreen :as fs]
[app.main.ui.hooks :as hooks]
[app.main.ui.icons :as i]
[app.main.ui.viewer.header :refer [header]]
[app.main.ui.viewer.shapes :as shapes :refer [frame-svg]]
[app.main.ui.viewer.thumbnails :refer [thumbnails-panel]]
[app.util.dom :as dom]
[app.util.i18n :as i18n :refer [t tr]]
[app.util.keyboard :as kbd]
[goog.events :as events]
[okulary.core :as l]
[rumext.alpha :as mf]))
(defn- frame-contains?
[{:keys [x y width height]} {px :x py :y}]
(let [x2 (+ x width)
y2 (+ y height)]
(and (<= x px x2)
(<= y py y2))))
(def threads-ref
(l/derived :comment-threads st/state))
(def comments-local-ref
(l/derived :comments-local st/state))
(mf/defc comments-layer
[{:keys [width height zoom frame data] :as props}]
(let [profile (mf/deref refs/profile)
modifier1 (-> (gpt/point (:x frame) (:y frame))
(gpt/negate)
(gmt/translate-matrix))
modifier2 (-> (gpt/point (:x frame) (:y frame))
(gmt/translate-matrix))
threads-map (->> (mf/deref threads-ref)
(d/mapm #(update %2 :position gpt/transform modifier1)))
cstate (mf/deref refs/comments-local)
mframe (geom/transform-shape frame)
threads (->> (vals threads-map)
(dcm/apply-filters cstate profile)
(filter (fn [{:keys [seqn position]}]
(frame-contains? mframe position))))
on-bubble-click
(mf/use-callback
(mf/deps cstate)
(fn [thread]
(if (= (:open cstate) (:id thread))
(st/emit! (dcm/close-thread))
(st/emit! (dcm/open-thread thread)))))
on-click
(mf/use-callback
(mf/deps cstate data frame)
(fn [event]
(dom/stop-propagation event)
(if (some? (:open cstate))
(st/emit! (dcm/close-thread))
(let [event (.-nativeEvent ^js event)
position (-> (dom/get-offset-position event)
(gpt/transform modifier2))
params {:position position
:page-id (get-in data [:page :id])
:file-id (get-in data [:file :id])}]
(st/emit! (dcm/create-draft params))))))
on-draft-cancel
(mf/use-callback
(mf/deps cstate)
(st/emitf (dcm/close-thread)))
on-draft-submit
(mf/use-callback
(mf/deps frame)
(fn [draft]
(let [params (update draft :position gpt/transform modifier2)]
(st/emit! (dcm/create-thread params)
(dcm/close-thread)))))]
[:div.comments-section {:on-click on-click}
[:div.viewer-comments-container
[:div.threads
(for [item threads]
[:& cmt/thread-bubble {:thread item
:zoom zoom
:on-click on-bubble-click
:open? (= (:id item) (:open cstate))
:key (:seqn item)}])
(when-let [id (:open cstate)]
(when-let [thread (get threads-map id)]
[:& cmt/thread-comments {:thread thread
:users (:users data)
:zoom zoom}]))
(when-let [draft (:draft cstate)]
[:& cmt/draft-thread {:draft (update draft :position gpt/transform modifier1)
:on-cancel on-draft-cancel
:on-submit on-draft-submit
:zoom zoom}])]]]))
(mf/defc viewport
{::mf/wrap [mf/memo]}
[{:keys [state data index section] :or {zoom 1} :as props}]
(let [zoom (:zoom state)
objects (:objects data)
frame (get-in data [:frames index])
frame-id (:id frame)
modifier (-> (gpt/point (:x frame) (:y frame))
(gpt/negate)
(gmt/translate-matrix))
update-fn #(assoc-in %1 [%2 :modifiers :displacement] modifier)
objects (->> (d/concat [frame-id] (cp/get-children frame-id objects))
(reduce update-fn objects))
interactions? (:interactions-show? state)
wrapper (mf/use-memo (mf/deps objects) #(shapes/frame-container-factory objects interactions?))
;; Retrieve frame again with correct modifier
frame (get objects frame-id)
width (* (:width frame) zoom)
height (* (:height frame) zoom)
vbox (str "0 0 " (:width frame 0) " " (:height frame 0))]
[:div.viewport-container
{:style {:width width
:height height
:state state
:position "relative"}}
(when (= section :comments)
[:& comments-layer {:width width
:height height
:frame frame
:data data
:zoom zoom}])
[:svg {:view-box vbox
:width width
:height height
:version "1.1"
:xmlnsXlink "http://www.w3.org/1999/xlink"
:xmlns "http://www.w3.org/2000/svg"}
[:& wrapper {:shape frame
:show-interactions? interactions?
:view-box vbox}]]]))
(mf/defc main-panel
[{:keys [data state index section]}]
(let [locale (mf/deref i18n/locale)
frames (:frames data)
frame (get frames index)]
[:section.viewer-preview
(cond
(empty? frames)
[:section.empty-state
[:span (t locale "viewer.empty-state")]]
(nil? frame)
[:section.empty-state
[:span (t locale "viewer.frame-not-found")]]
(some? state)
[:& viewport
{:data data
:section section
:index index
:state state
}])]))
(mf/defc viewer-content
[{:keys [data state index section] :as props}]
(let [on-click
(fn [event]
(dom/stop-propagation event)
(st/emit! (dcm/close-thread))
(let [mode (get state :interactions-mode)]
(when (= mode :show-on-click)
(st/emit! dv/flash-interactions))))
on-mouse-wheel
(fn [event]
(when (or (kbd/ctrl? event) (kbd/meta? event))
(dom/prevent-default event)
(let [event (.getBrowserEvent ^js event)
delta (+ (.-deltaY ^js event) (.-deltaX ^js event))]
(if (pos? delta)
(st/emit! dv/decrease-zoom)
(st/emit! dv/increase-zoom)))))
on-key-down
(fn [event]
(when (kbd/esc? event)
(st/emit! (dcm/close-thread))))
on-mount
(fn []
;; bind with passive=false to allow the event to be cancelled
;; https://stackoverflow.com/a/57582286/3219895
(let [key1 (events/listen goog/global "wheel" on-mouse-wheel #js {"passive" false})
key2 (events/listen js/window "keydown" on-key-down)
key3 (events/listen js/window "click" on-click)]
(fn []
(events/unlistenByKey key1)
(events/unlistenByKey key2)
(events/unlistenByKey key3))))]
(mf/use-effect on-mount)
(hooks/use-shortcuts sc/shortcuts)
[:& fs/fullscreen-wrapper {}
[:div.viewer-layout
[:& header
{:data data
:state state
:section section
:index index}]
[:div.viewer-content {:on-click on-click}
(when (:show-thumbnails state)
[:& thumbnails-panel {:screen :viewer
:index index
:data data}])
[:& main-panel {:data data
:section section
:state state
:index index}]]]]))
;; --- Component: Viewer Page
(mf/defc viewer-page
[{:keys [file-id page-id index token section] :as props}]
(mf/use-effect
(mf/deps file-id page-id token)
(st/emitf (dv/initialize props)))
(let [data (mf/deref refs/viewer-data)
state (mf/deref refs/viewer-local)]
(when (and data state)
[:& viewer-content
{:index index
:section section
:state state
:data data}])))