penpot/src/uxbox/view/ui/viewer/interactions.cljs

273 lines
10 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) 2016 Andrey Antukh <niwi@niwi.nz>
(ns uxbox.view.ui.viewer.interactions
(:require [promesa.core :as p]
[uxbox.util.dom :as dom]
[uxbox.util.rstore :as rs]
[uxbox.main.geom :as geom]
[uxbox.util.geom.matrix :as gmt]
[uxbox.util.geom.point :as gpt]
[uxbox.main.state :as st]
[uxbox.view.data.viewer :as dv]
[vendor.snapsvg])
;; Documentation about available events:
;; https://google.github.io/closure-library/api/goog.events.EventType.html
(:import goog.events.EventType))
(defn- translate-trigger
"Translates the interaction trigger name (keyword) into
approriate dom event name (keyword)."
[trigger]
{:pre [(keyword? trigger)]}
(case trigger
:click EventType.CLICK
:doubleclick EventType.DBLCLICK
:rightclick EventType.CONTEXTMENU
:mousein EventType.MOUSEENTER
:mouseout EventType.MOUSELEAVE
:hover ::hover
(throw (ex-info "not supported at this moment" {:trigger trigger}))))
(defn- translate-ease
"Translates the uxbox ease settings to one
that are compatible with anime.js library."
[ease]
{:pre [(keyword? ease)]}
(case ease
:linear js/mina.linear
:easein js/mina.easin
:easeout js/mina.easout
:easeinout js/mina.easeinout
(throw (ex-info "invalid ease value" {:ease ease}))))
(defn- animate
[& opts]
(js/anime (clj->js (apply hash-map opts))))
(defn- animate*
[dom {:keys [delay duration easing] :as opts}]
(let [props (dissoc opts :delay :duration :easing)
snap (js/Snap. dom)]
(p/schedule delay #(.animate snap (clj->js props) duration easing))))
;; --- Interactions to Animation Compilation
(defn- run-moveby-interaction
[{:keys [element moveby-x moveby-y easing delay duration direction]}]
(let [dom (dom/get-element (str "shape-" element))]
(if (= direction :reverse)
(animate* dom {:transform (str "translate(" (- moveby-x)" " (- moveby-y) ")")
:easing (translate-ease easing)
:delay delay
:duration duration})
(animate* dom {:transform (str "translate(" moveby-x " " moveby-y ")")
:easing (translate-ease easing)
:delay delay
:duration duration}))))
(declare run-hide-interaction)
(defn- run-show-interaction
[{:keys [element easing delay duration
animation direction] :as itx}]
(let [dom (dom/get-element (str "shape-" element))]
(if (= direction :reverse)
(run-hide-interaction (dissoc itx :direction))
(animate* dom {:fillOpacity "1"
:strokeOpacity "1"
:easing (translate-ease easing)
:delay delay
:duration duration}))))
(defn- run-hide-interaction
[{:keys [element easing delay duration
animation direction] :as itx}]
(let [dom (dom/get-element (str "shape-" element))]
(if (= direction :reverse)
(run-show-interaction (dissoc itx :direction))
(animate* dom {:fillOpacity "0"
:strokeOpacity "0"
:easing (translate-ease easing)
:delay delay
:duration duration}))))
(defn- run-opacity-interaction
[{:keys [element opacity easing delay
duration animation direction]}]
(let [shape (get-in @st/state [:shapes-by-id element])
dom (dom/get-element (str "shape-" element))]
(if (= direction :reverse)
(animate* dom {:fillOpacity (:fill-opacity shape "1")
:strokeOpacity (:stroke-opacity shape "1")
:easing (translate-ease easing)
:delay delay
:duration duration})
(animate* dom {:fillOpacity opacity
:strokeOpacity opacity
:easing (translate-ease easing)
:delay delay
:duration duration}))))
;; (defn- run-size-interaction
;; [{:keys [element resize-width resize-height
;; easing delay duration] :as opts}]
;; (let [shape (get-in @st/state [:shapes-by-id element])
;; tf (geom/transformation-matrix
;; (geom/resize shape (gpt/point resize-width resize-height)))]
;; (animate :targets [(str "#shape-" element)]
;; :transform (str tf)
;; :easing (translate-ease easing)
;; :delay delay
;; :duration duration
;; :loop false)))
(defn- run-size-interaction-icon
[{:keys [x1 y1 view-box rotation] :as shape}
{:keys [resize-width resize-height easing
element delay duration direction] :as opts}]
(if (= direction :reverse)
(let [end (geom/transformation-matrix shape)]
(animate :targets [(str "#shape-" element)]
:transform (str end)
:easing (translate-ease easing)
:delay delay
:duration duration
:loop false))
(let [orig-width (nth view-box 2)
orig-height (nth view-box 3)
scale-x (/ resize-width orig-width)
scale-y (/ resize-height orig-height)
center-x (- resize-width (/ resize-width 2))
center-y (- resize-height (/ resize-height 2))
end (-> (gmt/matrix)
(gmt/translate x1 y1)
(gmt/translate center-x center-y)
(gmt/rotate rotation)
(gmt/translate (- center-x) (- center-y))
(gmt/scale scale-x scale-y))
dom (dom/get-element (str "shape-" element))]
(animate* dom {:transform (str end)
:easing (translate-ease easing)
:delay delay
:duration duration}))))
(defn- run-size-interaction-rect
[{:keys [x1 y1 rotation] :as shape}
{:keys [resize-width resize-height easing
element delay duration direction] :as opts}]
(if (= direction :reverse)
(let [end (geom/transformation-matrix shape)]
(animate :targets [(str "#shape-" element)]
:transform (str end)
:easing (translate-ease easing)
:delay delay
:duration duration
:loop false))
(let [dom (dom/get-element (str "shape-" element))]
(animate* dom {:easing (translate-ease easing)
:delay delay
:duration duration
:width resize-width
:height resize-height}))))
(defn- run-size-interaction
[{:keys [element] :as opts}]
(let [shape (get-in @st/state [:shapes-by-id element])]
(case (:type shape)
:icon (run-size-interaction-icon shape opts)
:rect (run-size-interaction-rect shape opts))))
(defn- run-gotourl-interaction
[{:keys [url]}]
(set! (.-href js/location) url))
(defn- run-gotopage-interaction
[{:keys [page]}]
(rs/emit! (dv/select-page page)))
(defn- run-color-interaction
[{:keys [element fill-color stroke-color direction easing delay duration]}]
(let [shape (get-in @st/state [:shapes-by-id element])
dom (dom/get-element (str "shape-" element))]
(if (= direction :reverse)
(animate* dom {:easing (translate-ease easing)
:delay delay
:duration duration
:fill (:fill shape "#000000")
:stroke (:stroke shape "#000000")})
(animate* dom {:easing (translate-ease easing)
:delay delay
:duration duration
:fill fill-color
:stroke stroke-color}))))
(defn- run-rotate-interaction
[{:keys [element rotation direction easing delay duration] :as opts}]
(let [shape (get-in @st/state [:shapes-by-id element])
dom (dom/get-element (str "shape-" element))
mtx1 (geom/transformation-matrix (update shape :rotation + rotation))
mtx2 (geom/transformation-matrix shape)]
(if (= direction :reverse)
(animate* dom {:easing (translate-ease easing)
:delay delay
:duration duration
:transform (str mtx2)})
(animate* dom {:easing (translate-ease easing)
:delay delay
:duration duration
:transform (str mtx1)}))))
(defn- run-interaction
"Given an interaction data structure return
a precompiled animation."
[{:keys [action] :as itx}]
(case action
:moveby (run-moveby-interaction itx)
:show (run-show-interaction itx)
:hide (run-hide-interaction itx)
:size (run-size-interaction itx)
:opacity (run-opacity-interaction itx)
:color (run-color-interaction itx)
:rotate (run-rotate-interaction itx)
:gotourl (run-gotourl-interaction itx)
:gotopage (run-gotopage-interaction itx)
(throw (ex-info "undefined interaction" {:action action}))))
;; --- Main Api
(defn- build-hover-evt
"A special case for hover event."
[itx]
(letfn [(on-mouse-enter [event]
(dom/prevent-default event)
(run-interaction itx))
(on-mouse-leave [event]
(dom/prevent-default event)
(run-interaction (assoc itx :direction :reverse)))]
[[EventType.MOUSEENTER on-mouse-enter]
[EventType.MOUSELEAVE on-mouse-leave]]))
(defn- build-generic-evt
"A reducer function that compiles interaction data structures
into apropriate event handler attributes."
[evt itx]
(letfn [(on-event [event]
(dom/prevent-default event)
(run-interaction itx))]
[[evt on-event]]))
(defn build-events
"Compile a sequence of interactions into a hash-map of event-handlers."
[shape]
(reduce (fn [acc itx]
(let [evt (translate-trigger (:trigger itx))]
(if (= evt ::hover)
(into acc (build-hover-evt itx))
(into acc (build-generic-evt evt itx)))))
[]
(vals (:interactions shape))))