mirror of
https://github.com/penpot/penpot.git
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118 lines
4.4 KiB
Clojure
118 lines
4.4 KiB
Clojure
;; This Source Code Form is subject to the terms of the Mozilla Public
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;; License, v. 2.0. If a copy of the MPL was not distributed with this
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;; file, You can obtain one at http://mozilla.org/MPL/2.0/.
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;;
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;; Copyright (c) KALEIDOS INC
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(ns app.main.data.workspace.drawing.box
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(:require
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[app.common.geom.point :as gpt]
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[app.common.geom.shapes :as gsh]
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[app.common.math :as mth]
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[app.common.pages.helpers :as cph]
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[app.common.types.modifiers :as ctm]
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[app.common.types.shape :as cts]
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[app.common.types.shape-tree :as ctst]
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[app.common.uuid :as uuid]
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[app.main.data.workspace.drawing.common :as common]
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[app.main.data.workspace.state-helpers :as wsh]
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[app.main.snap :as snap]
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[app.main.streams :as ms]
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[beicon.core :as rx]
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[potok.core :as ptk]))
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(defn adjust-ratio
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[point initial]
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(let [v (gpt/to-vec point initial)
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dx (mth/abs (:x v))
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dy (mth/abs (:y v))
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sx (mth/sign (:x v))
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sy (mth/sign (:y v))]
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(cond-> point
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(> dx dy)
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(assoc :y (- (:y point) (* sy (- dx dy))))
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(> dy dx)
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(assoc :x (- (:x point) (* sx (- dy dx)))))))
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(defn resize-shape [{:keys [x y width height] :as shape} initial point lock?]
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(if (and (some? x) (some? y) (some? width) (some? height))
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(let [draw-rect (gsh/make-rect initial (cond-> point lock? (adjust-ratio initial)))
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shape-rect (gsh/make-rect x y width height)
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scalev (gpt/point (/ (:width draw-rect) (:width shape-rect))
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(/ (:height draw-rect) (:height shape-rect)))
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movev (gpt/to-vec (gpt/point shape-rect) (gpt/point draw-rect))]
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(-> shape
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(assoc :click-draw? false)
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(gsh/transform-shape (-> (ctm/empty)
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(ctm/resize scalev (gpt/point x y))
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(ctm/move movev)))))
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shape))
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(defn update-drawing [state initial point lock?]
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(update-in state [:workspace-drawing :object] resize-shape initial point lock?))
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(defn move-drawing
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[{:keys [x y]}]
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(fn [state]
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(update-in state [:workspace-drawing :object] gsh/absolute-move (gpt/point x y))))
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(defn handle-drawing-box []
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(ptk/reify ::handle-drawing-box
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ptk/WatchEvent
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(watch [_ state stream]
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(let [stoper? #(or (ms/mouse-up? %) (= % :interrupt))
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stoper (rx/filter stoper? stream)
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layout (get state :workspace-layout)
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snap-pixel? (contains? layout :snap-pixel-grid)
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initial (cond-> @ms/mouse-position snap-pixel? gpt/round)
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page-id (:current-page-id state)
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objects (wsh/lookup-page-objects state page-id)
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focus (:workspace-focus-selected state)
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zoom (get-in state [:workspace-local :zoom] 1)
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fid (ctst/top-nested-frame objects initial)
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shape (get-in state [:workspace-drawing :object])
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shape (-> shape
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(cts/setup-shape {:x (:x initial)
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:y (:y initial)
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:width 0.01
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:height 0.01})
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(cond-> (and (cph/frame-shape? shape)
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(not= fid uuid/zero))
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(assoc :fills [] :hide-in-viewer true))
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(assoc :frame-id fid)
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(assoc :initialized? true)
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(assoc :click-draw? true))]
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(rx/concat
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;; Add shape to drawing state
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(rx/of #(assoc-in state [:workspace-drawing :object] shape))
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;; Initial SNAP
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(->>
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(rx/concat
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(->> (snap/closest-snap-point page-id [shape] objects layout zoom focus initial)
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(rx/map move-drawing))
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(->> ms/mouse-position
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(rx/filter #(> (gpt/distance % initial) (/ 2 zoom)))
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(rx/with-latest vector ms/mouse-position-shift)
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(rx/switch-map
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(fn [[point :as current]]
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(->> (snap/closest-snap-point page-id [shape] objects layout zoom focus point)
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(rx/map #(conj current %)))))
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(rx/map
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(fn [[_ shift? point]]
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#(update-drawing % initial (cond-> point snap-pixel? gpt/round) shift?)))))
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(rx/take-until stoper))
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(->> (rx/of (common/handle-finish-drawing))
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(rx/delay 100)))))))
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