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Merge pull request #5225 from penpot/azazeln28-panning-performance-improvement

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✨ Improve panning code
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Andrey Antukh 2024-10-29 19:43:54 +01:00 • committed by GitHub
commit acf273e4e3
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1 changed files with 5 additions and 7 deletions
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12
frontend/src/app/main/data/workspace/viewport.cljs
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@ -10,7 +10,6 @@
[app.common.data.macros :as dm]
[app.common.files.helpers :as cfh]
[app.common.geom.align :as gal]
[app.common.geom.point :as gpt]
[app.common.geom.rect :as gpr]
[app.common.geom.shapes :as gsh]
[app.common.math :as mth]
@ -150,19 +149,18 @@
ptk/WatchEvent
(watch [_ state stream]
(let [stopper (->> stream (rx/filter (ptk/type? ::finish-panning)))
zoom (-> (get-in state [:workspace-local :zoom]) gpt/point)]
zoom (get-in state [:workspace-local :zoom])]
(when-not (get-in state [:workspace-local :panning])
(rx/concat
(rx/of #(-> % (assoc-in [:workspace-local :panning] true)))
(->> stream
(rx/filter mse/pointer-event?)
(rx/filter #(= :delta (:source %)))
(rx/map :pt)
(rx/take-until stopper)
(rx/map (fn [delta]
(let [delta (gpt/divide delta zoom)]
(update-viewport-position {:x #(- % (:x delta))
:y #(- % (:y delta))})))))))))))
(rx/map (fn [event]
(let [delta (dm/get-prop event :pt)]
(update-viewport-position {:x #(- % (/ (:x delta) zoom))
:y #(- % (/ (:y delta) zoom))})))))))))))
(defn finish-panning []
(ptk/reify ::finish-panning