2020-05-05 11:18:20 +02:00

264 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) 2015-2020 Juan de la Cruz <delacruzgarciajuan@gmail.com>
;; Copyright (c) 2015-2020 Andrey Antukh <niwi@niwi.nz>
(ns uxbox.main.ui.workspace.selection
"Selection handlers component."
(:require
[beicon.core :as rx]
[lentes.core :as l]
[cuerdas.core :as str]
[potok.core :as ptk]
[rumext.alpha :as mf]
[uxbox.main.data.workspace :as dw]
[uxbox.util.geom.shapes :as geom]
[uxbox.main.refs :as refs]
[uxbox.main.store :as st]
[uxbox.main.streams :as ms]
[uxbox.util.dom :as dom]
[uxbox.util.object :as obj]
[uxbox.util.geom.point :as gpt]
[uxbox.util.geom.matrix :as gmt]
[uxbox.util.debug :refer [debug?]]))
;; --- Controls (Component)
(def ^:private handler-size-threshold
"The size in pixels that shape width or height
should reach in order to increase the handler
control pointer radius from 4 to 6."
60)
(mf/defc control-item
{::mf/wrap-props false}
[props]
(let [class (obj/get props "class")
on-click (obj/get props "on-click")
r (obj/get props "r")
cx (obj/get props "cx")
cy (obj/get props "cy")]
[:circle
{:class-name class
:on-mouse-down on-click
:r r
:style {:fillOpacity "1"
:strokeWidth "1px"
:vectorEffect "non-scaling-stroke"}
:fill "#ffffff"
:stroke "#1FDEA7"
:cx cx
:cy cy}]))
(def ^:private rotate-cursor-svg "url(\"data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='20px' height='20px' transform='rotate(%s)' viewBox='0 0 132.292 132.006'%3E%3Cpath d='M85.225 3.48c.034 4.989-.093 9.852-.533 14.78-29.218 5.971-54.975 27.9-63.682 56.683-1.51 2.923-1.431 7.632-3.617 9.546-5.825.472-11.544.5-17.393.45 11.047 15.332 20.241 32.328 32.296 46.725 5.632 1.855 7.155-5.529 10.066-8.533 8.12-12.425 17.252-24.318 24.269-37.482-6.25-.86-12.564-.88-18.857-1.057 5.068-17.605 19.763-31.81 37.091-37.122.181 6.402.206 12.825 1.065 19.184 15.838-9.05 30.899-19.617 45.601-30.257 2.985-4.77-3.574-7.681-6.592-9.791C111.753 17.676 98.475 8.889 85.23.046l-.005 3.435z'/%3E%3Cpath fill='%23fff' d='M92.478 23.995s-1.143.906-6.714 1.923c-29.356 5.924-54.352 30.23-59.717 59.973-.605 3.728-1.09 5.49-1.09 5.49l-11.483-.002s7.84 10.845 10.438 15.486c3.333 4.988 6.674 9.971 10.076 14.912a2266.92 2266.92 0 0019.723-29.326c-5.175-.16-10.35-.343-15.522-.572 3.584-27.315 26.742-50.186 53.91-54.096.306 5.297.472 10.628.631 15.91a2206.462 2206.462 0 0029.333-19.726c-9.75-6.7-19.63-13.524-29.483-20.12z'/%3E%3C/svg%3E\") 10 10, auto")
(defn rotation-cursor
[angle]
(str "url(\"data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='20px' height='20px' transform='rotate(" angle ")' viewBox='0 0 132.292 132.006'%3E%3Cpath d='M85.225 3.48c.034 4.989-.093 9.852-.533 14.78-29.218 5.971-54.975 27.9-63.682 56.683-1.51 2.923-1.431 7.632-3.617 9.546-5.825.472-11.544.5-17.393.45 11.047 15.332 20.241 32.328 32.296 46.725 5.632 1.855 7.155-5.529 10.066-8.533 8.12-12.425 17.252-24.318 24.269-37.482-6.25-.86-12.564-.88-18.857-1.057 5.068-17.605 19.763-31.81 37.091-37.122.181 6.402.206 12.825 1.065 19.184 15.838-9.05 30.899-19.617 45.601-30.257 2.985-4.77-3.574-7.681-6.592-9.791C111.753 17.676 98.475 8.889 85.23.046l-.005 3.435z'/%3E%3Cpath fill='%23fff' d='M92.478 23.995s-1.143.906-6.714 1.923c-29.356 5.924-54.352 30.23-59.717 59.973-.605 3.728-1.09 5.49-1.09 5.49l-11.483-.002s7.84 10.845 10.438 15.486c3.333 4.988 6.674 9.971 10.076 14.912a2266.92 2266.92 0 0019.723-29.326c-5.175-.16-10.35-.343-15.522-.572 3.584-27.315 26.742-50.186 53.91-54.096.306 5.297.472 10.628.631 15.91a2206.462 2206.462 0 0029.333-19.726c-9.75-6.7-19.63-13.524-29.483-20.12z'/%3E%3C/svg%3E\") 10 10, auto"))
(def rotation-handler-positions
#{:top-left :top-right :bottom-left :bottom-right})
(mf/defc rotation-handler
{::mf/wrap-props false}
[props]
(let [cx (obj/get props "cx")
cy (obj/get props "cy")
position (obj/get props "position")
on-mouse-down (obj/get props "on-mouse-down")
rotation (obj/get props "rotation")
zoom (obj/get props "zoom")]
(when (contains? rotation-handler-positions position)
(let [size (/ 20 zoom)
rotation (or rotation 0)
x (- cx (if (#{:top-left :bottom-left} position) size 0))
y (- cy (if (#{:top-left :top-right} position) size 0))
angle (case position
:top-left 0
:top-right 90
:bottom-right 180
:bottom-left 270)]
[:rect {:style {:cursor (rotation-cursor (+ rotation angle))}
:x x
:y y
:width size
:height size
:fill (if (debug? :rotation-handler) "red" "transparent")
:transform (gmt/rotate-matrix rotation (gpt/point cx cy))
:on-mouse-down (or on-mouse-down (fn []))}]))))
(mf/defc controls
{::mf/wrap-props false}
[props]
(let [shape (obj/get props "shape")
zoom (obj/get props "zoom")
on-resize (obj/get props "on-resize")
on-rotate (obj/get props "on-rotate")
current-transform (mf/deref refs/current-transform)
{:keys [x y width height rotation] :as shape} (geom/shape->rect-shape shape)
radius (if (> (max width height) handler-size-threshold) 4.0 4.0)
transform (geom/transform-matrix shape)
resize-handlers {:top [(+ x (/ width 2 )) y]
:right [(+ x width) (+ y (/ height 2))]
:bottom [(+ x (/ width 2)) (+ y height)]
:left [x (+ y (/ height 2))]
:top-left [x y]
:top-right [(+ x width) y]
:bottom-left [x (+ y height)]
:bottom-right [(+ x width) (+ y height)]}]
[:g.controls
(when (not (#{:move :rotate :resize} current-transform))
[:rect.main {:transform transform
:x (- x 1) :y (- y 1)
:width (+ width 2)
:height (+ height 2)
:style {:stroke "#1FDEA7"
:stroke-width "1"
:fill "transparent"}}])
(when (not (#{:move :rotate} current-transform))
(for [[position [cx cy]] resize-handlers]
(let [tp (gpt/transform (gpt/point cx cy) transform)]
[:* {:key (name position)}
[:& rotation-handler {:cx (:x tp)
:cy (:y tp)
:position position
:rotation (:rotation shape)
:zoom zoom
:on-mouse-down on-rotate}]
[:& control-item {:class (name position)
:on-click #(on-resize position %)
:r (/ radius zoom)
:cx (:x tp)
:cy (:y tp)}]])))]))
;; --- Selection Handlers (Component)
(mf/defc path-edition-selection-handlers
[{:keys [shape modifiers zoom] :as props}]
(letfn [(on-mouse-down [event index]
(dom/stop-propagation event)
;; TODO: this need code ux refactor
(let [stoper (get-edition-stream-stoper)
stream (->> (ms/mouse-position-deltas @ms/mouse-position)
(rx/take-until stoper))]
;; (when @refs/selected-alignment
;; (st/emit! (dw/initial-path-point-align (:id shape) index)))
(rx/subscribe stream #(on-handler-move % index))))
(get-edition-stream-stoper []
(let [stoper? #(and (ms/mouse-event? %) (= (:type %) :up))]
(rx/merge
(rx/filter stoper? st/stream)
(->> st/stream
(rx/filter #(= % :interrupt))
(rx/take 1)))))
(on-handler-move [delta index]
(st/emit! (dw/update-path (:id shape) index delta)))]
(let [transform (geom/transform-matrix shape)
displacement (:displacement modifiers)
segments (cond->> (:segments shape)
displacement (map #(gpt/transform % displacement)))]
[:g.controls
(for [[index {:keys [x y]}] (map-indexed vector segments)]
(let [{:keys [x y]} (gpt/transform (gpt/point x y) transform)]
[:circle {:cx x :cy y
:r (/ 6.0 zoom)
:key index
:on-mouse-down #(on-mouse-down % index)
:fill "#ffffff"
:stroke "#1FDEA7"
:style {:cursor "pointer"}}]))])))
;; TODO: add specs for clarity
(mf/defc text-edition-selection-handlers
[{:keys [shape zoom] :as props}]
(let [{:keys [x y width height]} shape]
[:g.controls
[:rect.main {:x x :y y
:transform (geom/transform-matrix shape)
:width width
:height height
:style {:stroke "#1FDEA7"
:stroke-width "0.5"
:stroke-opacity "1"
:fill "transparent"}}]]))
(mf/defc multiple-selection-handlers
[{:keys [shapes selected zoom] :as props}]
(let [shape (geom/selection-rect shapes)
shape-center (geom/center shape)
on-resize #(do (dom/stop-propagation %2)
(st/emit! (dw/start-resize %1 selected shape)))
on-rotate #(do (dom/stop-propagation %)
(st/emit! (dw/start-rotate shapes)))]
[:*
[:& controls {:shape shape
:zoom zoom
:on-resize on-resize
:on-rotate on-rotate}]
(when (debug? :selection-center)
[:circle {:cx (:x shape-center) :cy (:y shape-center) :r 5 :fill "yellow"}])]))
(mf/defc single-selection-handlers
[{:keys [shape zoom] :as props}]
(let [shape-id (:id shape)
shape (geom/transform-shape shape)
shape' (if (debug? :simple-selection) (geom/selection-rect [shape]) shape)
on-resize
#(do (dom/stop-propagation %2)
(st/emit! (dw/start-resize %1 #{shape-id} shape')))
on-rotate
#(do (dom/stop-propagation %)
(st/emit! (dw/start-rotate [shape])))]
[:*
[:& controls {:shape shape'
:zoom zoom
:on-rotate on-rotate
:on-resize on-resize}]]))
(mf/defc selection-handlers
[{:keys [selected edition zoom] :as props}]
(let [;; We need remove posible nil values because on shape
;; deletion many shape will reamin selected and deleted
;; in the same time for small instant of time
shapes (->> (mf/deref (refs/objects-by-id selected))
(remove nil?))
num (count shapes)
{:keys [id type] :as shape} (first shapes)]
(cond
(zero? num)
nil
(> num 1)
[:& multiple-selection-handlers {:shapes shapes
:selected selected
:zoom zoom}]
(and (= type :text)
(= edition (:id shape)))
[:& text-edition-selection-handlers {:shape shape
:zoom zoom}]
(and (or (= type :path)
(= type :curve))
(= edition (:id shape)))
[:& path-edition-selection-handlers {:shape shape
:zoom zoom}]
:else
[:& single-selection-handlers {:shape shape
:zoom zoom}])))