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penpot/frontend/src/app/main/data/workspace/interactions.cljs
2023-05-17 16:05:29 +02:00

362 lines
12 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) KALEIDOS INC
(ns app.main.data.workspace.interactions
(:require
[app.common.data :as d]
[app.common.data.macros :as dm]
[app.common.geom.point :as gpt]
[app.common.pages :as cp]
[app.common.pages.changes-builder :as pcb]
[app.common.pages.helpers :as cph]
[app.common.types.page :as ctp]
[app.common.types.shape-tree :as ctst]
[app.common.types.shape.interactions :as ctsi]
[app.common.uuid :as uuid]
[app.main.data.workspace.changes :as dch]
[app.main.data.workspace.state-helpers :as wsh]
[app.main.data.workspace.undo :as dwu]
[app.main.streams :as ms]
[beicon.core :as rx]
[potok.core :as ptk]))
;; --- Flows
(defn add-flow
[starting-frame]
(ptk/reify ::add-flow
ptk/WatchEvent
(watch [it state _]
(let [page (wsh/lookup-page state)
flows (get-in page [:options :flows] [])
unames (into #{} (map :name flows))
name (cp/generate-unique-name unames "Flow 1")
new-flow {:id (uuid/next)
:name name
:starting-frame starting-frame}]
(rx/of (dch/commit-changes
(-> (pcb/empty-changes it)
(pcb/with-page page)
(pcb/update-page-option :flows ctp/add-flow new-flow))))))))
(defn add-flow-selected-frame
[]
(ptk/reify ::add-flow-selected-frame
ptk/WatchEvent
(watch [_ state _]
(let [selected (wsh/lookup-selected state)]
(rx/of (add-flow (first selected)))))))
(defn remove-flow
[flow-id]
(dm/assert! (uuid? flow-id))
(ptk/reify ::remove-flow
ptk/WatchEvent
(watch [it state _]
(let [page (wsh/lookup-page state)]
(rx/of (dch/commit-changes
(-> (pcb/empty-changes it)
(pcb/with-page page)
(pcb/update-page-option :flows ctp/remove-flow flow-id))))))))
(defn rename-flow
[flow-id name]
(dm/assert! (uuid? flow-id))
(dm/assert! (string? name))
(ptk/reify ::rename-flow
ptk/WatchEvent
(watch [it state _]
(let [page (wsh/lookup-page state) ]
(rx/of (dch/commit-changes
(-> (pcb/empty-changes it)
(pcb/with-page page)
(pcb/update-page-option :flows ctp/update-flow flow-id
#(ctp/rename-flow % name)))))))))
(defn start-rename-flow
[id]
(dm/assert! (uuid? id))
(ptk/reify ::start-rename-flow
ptk/UpdateEvent
(update [_ state]
(assoc-in state [:workspace-local :flow-for-rename] id))))
(defn end-rename-flow
[]
(ptk/reify ::end-rename-flow
ptk/UpdateEvent
(update [_ state]
(update state :workspace-local dissoc :flow-for-rename))))
;; --- Interactions
(defn- connected-frame?
"Check if some frame is origin or destination of any navigate interaction
in the page"
[objects frame-id]
(let [children (cph/get-children-with-self objects frame-id)]
(or (some ctsi/flow-origin? (map :interactions children))
(some #(ctsi/flow-to? % frame-id) (map :interactions (vals objects))))))
(defn add-new-interaction
([shape] (add-new-interaction shape nil))
([shape destination]
(ptk/reify ::add-new-interaction
ptk/WatchEvent
(watch [_ state _]
(let [page-id (:current-page-id state)
objects (wsh/lookup-page-objects state page-id)
frame (cph/get-root-frame objects (:id shape))
flows (get-in state [:workspace-data
:pages-index
page-id
:options
:flows] [])
flow (ctp/get-frame-flow flows (:id frame))]
(rx/concat
(rx/of (dch/update-shapes [(:id shape)]
(fn [shape]
(let [new-interaction (-> ctsi/default-interaction
(ctsi/set-destination destination)
(assoc :position-relative-to (:id shape)))]
(update shape :interactions
ctsi/add-interaction new-interaction)))))
(when (and (not (connected-frame? objects (:id frame)))
(nil? flow))
(rx/of (add-flow (:id frame))))))))))
(defn remove-interaction
[shape index]
(ptk/reify ::remove-interaction
ptk/WatchEvent
(watch [_ _ _]
(rx/of (dch/update-shapes [(:id shape)]
(fn [shape]
(update shape :interactions
ctsi/remove-interaction index)))))))
(defn update-interaction
[shape index update-fn]
(ptk/reify ::update-interaction
ptk/WatchEvent
(watch [_ _ _]
(rx/of (dch/update-shapes [(:id shape)]
(fn [shape]
(update shape :interactions
ctsi/update-interaction index update-fn)))))))
(defn remove-all-interactions-nav-to
"Remove all interactions that navigate to the given frame."
[frame-id]
(ptk/reify ::remove-all-interactions-nav-to
ptk/WatchEvent
(watch [_ state _]
(let [page-id (:current-page-id state)
objects (wsh/lookup-page-objects state page-id)
remove-interactions-shape
(fn [shape]
(let [interactions (:interactions shape)
new-interactions (ctsi/remove-interactions #(ctsi/navs-to? % frame-id)
interactions)]
(when (not= (count interactions) (count new-interactions))
(dch/update-shapes [(:id shape)]
(fn [shape]
(assoc shape :interactions new-interactions))))))]
(rx/from (->> (vals objects)
(map remove-interactions-shape)
(d/vec-without-nils)))))))
(declare move-edit-interaction)
(declare finish-edit-interaction)
(defn start-edit-interaction
[index]
(ptk/reify ::start-edit-interaction
ptk/UpdateEvent
(update [_ state]
(assoc-in state [:workspace-local :editing-interaction-index] index))
ptk/WatchEvent
(watch [_ state stream]
(let [initial-pos @ms/mouse-position
selected (wsh/lookup-selected state)
stopper (rx/filter ms/mouse-up? stream)]
(when (= 1 (count selected))
(rx/concat
(->> ms/mouse-position
(rx/take-until stopper)
(rx/map #(move-edit-interaction initial-pos %)))
(rx/of (finish-edit-interaction index initial-pos))))))))
(defn- get-target-frame
[state position]
(let [objects (wsh/lookup-page-objects state)
from-id (-> state wsh/lookup-selected first)
from-shape (wsh/lookup-shape state from-id)
from-frame-id (if (cph/frame-shape? from-shape)
from-id (:frame-id from-shape))
target-frame (ctst/frame-by-position objects position)]
(when (and (not= (:id target-frame) uuid/zero)
(not= (:id target-frame) from-frame-id))
target-frame)))
(defn move-edit-interaction
[_initial-pos position]
(ptk/reify ::move-edit-interaction
ptk/UpdateEvent
(update [_ state]
(let [end-frame (get-target-frame state position)]
(-> state
(assoc-in [:workspace-local :draw-interaction-to] position)
(assoc-in [:workspace-local :draw-interaction-to-frame] end-frame))))))
(defn finish-edit-interaction
[index initial-pos]
(ptk/reify ::finish-edit-interaction
ptk/UpdateEvent
(update [_ state]
(-> state
(assoc-in [:workspace-local :editing-interaction-index] nil)
(assoc-in [:workspace-local :draw-interaction-to] nil)
(assoc-in [:workspace-local :draw-interaction-to-frame] nil)))
ptk/WatchEvent
(watch [_ state _]
(let [position @ms/mouse-position
target-frame (get-target-frame state position)
shape-id (-> state wsh/lookup-selected first)
shape (wsh/lookup-shape state shape-id)
change-interaction
(fn [interaction]
(cond-> interaction
(not (ctsi/has-destination interaction))
(ctsi/set-action-type :navigate)
:always
(ctsi/set-destination (:id target-frame))))
undo-id (js/Symbol)]
(rx/of
(dwu/start-undo-transaction undo-id)
(when (:hide-in-viewer target-frame)
; If the target frame is hidden, we need to unhide it so
; users can navigate to it.
(dch/update-shapes [(:id target-frame)]
#(dissoc % :hide-in-viewer)))
(cond
(or (nil? shape)
;; Didn't changed the position for the interaction
(= position initial-pos)
;; New interaction but invalid target
(and (nil? index) (nil? target-frame)))
nil
;; Dropped interaction in an invalid target. We remove it
(and (some? index) (nil? target-frame))
(remove-interaction shape index)
(nil? index)
(add-new-interaction shape (:id target-frame))
:else
(update-interaction shape index change-interaction))
(dwu/commit-undo-transaction undo-id))))))
;; --- Overlays
(declare move-overlay-pos)
(declare finish-move-overlay-pos)
(defn start-move-overlay-pos
[index]
(ptk/reify ::start-move-overlay-pos
ptk/UpdateEvent
(update [_ state]
(-> state
(assoc-in [:workspace-local :move-overlay-to] nil)
(assoc-in [:workspace-local :move-overlay-index] index)))
ptk/WatchEvent
(watch [_ state stream]
(let [initial-pos @ms/mouse-position
selected (wsh/lookup-selected state)
stopper (rx/filter ms/mouse-up? stream)]
(when (= 1 (count selected))
(let [page-id (:current-page-id state)
objects (wsh/lookup-page-objects state page-id)
shape (->> state
wsh/lookup-selected
first
(get objects))
overlay-pos (-> shape
(get-in [:interactions index])
:overlay-position)
orig-frame (cph/get-frame objects shape)
frame-pos (gpt/point (:x orig-frame) (:y orig-frame))
offset (-> initial-pos
(gpt/subtract overlay-pos)
(gpt/subtract frame-pos))]
(rx/concat
(->> ms/mouse-position
(rx/take-until stopper)
(rx/map #(move-overlay-pos % frame-pos offset)))
(rx/of (finish-move-overlay-pos index frame-pos offset)))))))))
(defn move-overlay-pos
[pos frame-pos offset]
(ptk/reify ::move-overlay-pos
ptk/UpdateEvent
(update [_ state]
(let [pos (-> pos
(gpt/subtract frame-pos)
(gpt/subtract offset))]
(assoc-in state [:workspace-local :move-overlay-to] pos)))))
(defn finish-move-overlay-pos
[index frame-pos offset]
(ptk/reify ::finish-move-overlay-pos
ptk/UpdateEvent
(update [_ state]
(-> state
(d/dissoc-in [:workspace-local :move-overlay-to])
(d/dissoc-in [:workspace-local :move-overlay-index])))
ptk/WatchEvent
(watch [_ state _]
(let [pos @ms/mouse-position
overlay-pos (-> pos
(gpt/subtract frame-pos)
(gpt/subtract offset))
page-id (:current-page-id state)
objects (wsh/lookup-page-objects state page-id)
shape (->> state
wsh/lookup-selected
first
(get objects))
interactions (:interactions shape)
new-interactions
(update interactions index
#(ctsi/set-overlay-position % overlay-pos))]
(rx/of (dch/update-shapes [(:id shape)] #(merge % {:interactions new-interactions})))))))