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105 lines
3.4 KiB
Clojure
105 lines
3.4 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
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"Drawing interactions."
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(:require
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[app.common.data.macros :as dm]
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[app.common.uuid :as uuid]
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[app.main.data.workspace.common :as dwc]
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[app.main.data.workspace.drawing.box :as box]
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[app.main.data.workspace.drawing.common :as common]
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[app.main.data.workspace.drawing.curve :as curve]
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[app.main.data.workspace.path :as path]
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[beicon.v2.core :as rx]
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[potok.v2.core :as ptk]))
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(declare start-drawing)
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(declare handle-drawing)
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;; --- Select for Drawing
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(defn select-for-drawing
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[tool]
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(ptk/reify ::select-for-drawing
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ptk/UpdateEvent
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(update [_ state]
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(-> state
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(update :workspace-layout (fn [workspace-layout]
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(if (= tool :comments)
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(disj workspace-layout :document-history)
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workspace-layout)))
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(update :workspace-drawing assoc :tool tool)
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;; When changing drawing tool disable "scale text" mode
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;; automatically, to help users that ignore how this
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;; mode works.
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(update :workspace-layout disj :scale-text)))
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ptk/WatchEvent
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(watch [_ _ stream]
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(rx/merge
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(when (= tool :path)
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(rx/of (start-drawing :path)))
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(when (= tool :curve)
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(let [stopper (rx/filter dwc/interrupt? stream)]
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(->> stream
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(rx/filter (ptk/type? ::common/handle-finish-drawing))
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(rx/map (constantly tool))
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(rx/take 1)
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(rx/observe-on :async)
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(rx/map select-for-drawing)
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(rx/take-until stopper))))
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;; NOTE: comments are a special case and they manage they
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;; own interrupt cycle.
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(when (and (not= tool :comments)
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(not= tool :path))
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(let [stopper (rx/filter (ptk/type? ::clear-drawing) stream)]
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(->> stream
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(rx/filter dwc/interrupt?)
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(rx/take 1)
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(rx/map common/clear-drawing)
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(rx/take-until stopper))))))))
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;; NOTE/TODO: when an exception is raised in some point of drawing the
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;; draw lock is not released so the user need to refresh in order to
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;; be able draw again. THIS NEED TO BE REVISITED
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(defn start-drawing
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[type]
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(dm/assert! (keyword? type))
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(let [lock-id (uuid/next)]
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(ptk/reify ::start-drawing
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ptk/UpdateEvent
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(update [_ state]
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(update-in state [:workspace-drawing :lock] #(if (nil? %) lock-id %)))
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ptk/WatchEvent
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(watch [_ state stream]
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(let [lock (dm/get-in state [:workspace-drawing :lock])]
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(when (= lock lock-id)
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(rx/merge
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(rx/of (handle-drawing type))
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(->> stream
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(rx/filter (ptk/type? ::common/handle-finish-drawing))
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(rx/take 1)
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(rx/map #(fn [state] (update state :workspace-drawing dissoc :lock)))))))))))
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(defn handle-drawing
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[type]
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(ptk/reify ::handle-drawing
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ptk/WatchEvent
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(watch [_ _ _]
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(rx/of
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(case type
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:path (path/handle-new-shape)
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:curve (curve/handle-drawing)
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(box/handle-drawing type))))))
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