penpot/frontend/src/app/main/ui/render.cljs
2020-12-10 14:41:05 +01:00

112 lines
3.8 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/.
;;
;; This Source Code Form is "Incompatible With Secondary Licenses", as
;; defined by the Mozilla Public License, v. 2.0.
;;
;; Copyright (c) 2020 UXBOX Labs SL
(ns app.main.ui.render
(:require
[cljs.spec.alpha :as s]
[beicon.core :as rx]
[rumext.alpha :as mf]
[app.common.uuid :as uuid]
[app.common.pages :as cp]
[app.common.math :as mth]
[app.common.geom.shapes :as geom]
[app.common.geom.point :as gpt]
[app.common.geom.matrix :as gmt]
[app.main.exports :as exports]
[app.main.repo :as repo]))
(mf/defc object-svg
{::mf/wrap [mf/memo]}
[{:keys [objects object-id zoom] :or {zoom 1} :as props}]
(let [object (get objects object-id)
frame-id (if (= :frame (:type object))
(:id object)
(:frame-id object))
modifier (-> (gpt/point (:x object) (:y object))
(gpt/negate)
(gmt/translate-matrix))
mod-ids (cons frame-id (cp/get-children frame-id objects))
updt-fn #(-> %1
(assoc-in [%2 :modifiers :displacement] modifier)
(update %2 geom/transform-shape))
objects (reduce updt-fn objects mod-ids)
object (get objects object-id)
width (* (get-in object [:selrect :width]) zoom)
height (* (get-in object [:selrect :height]) zoom)
vbox (str (get-in object [:selrect :x]) " "
(get-in object [:selrect :y]) " "
(get-in object [:selrect :width]) " "
(get-in object [:selrect :height]))
frame-wrapper
(mf/use-memo
(mf/deps objects)
#(exports/frame-wrapper-factory objects))
group-wrapper
(mf/use-memo
(mf/deps objects)
#(exports/group-wrapper-factory objects))
shape-wrapper
(mf/use-memo
(mf/deps objects)
#(exports/shape-wrapper-factory objects))
]
[:svg {:id "screenshot"
:view-box vbox
:width width
:height height
:version "1.1"
:xmlnsXlink "http://www.w3.org/1999/xlink"
:xmlns "http://www.w3.org/2000/svg"}
(case (:type object)
:frame [:& frame-wrapper {:shape object :view-box vbox}]
:group [:& group-wrapper {:shape object}]
[:& shape-wrapper {:shape object}])]))
(defn- adapt-root-frame
[objects object-id]
(if (uuid/zero? object-id)
(let [object (get objects object-id)
shapes (cp/select-toplevel-shapes objects {:include-frames? true})
srect (geom/selection-rect shapes)
object (merge object (select-keys srect [:x :y :width :height]))
object (geom/transform-shape object)
object (assoc object :fill-color "#f0f0f0")]
(assoc objects (:id object) object))
objects))
;; NOTE: for now, it is ok download the entire file for render only
;; single page but in a future we need consider to add a specific
;; backend entry point for download only the data of single page.
(mf/defc render-object
[{:keys [file-id page-id object-id] :as props}]
(let [objects (mf/use-state nil)]
(mf/use-effect
#(let [subs (->> (repo/query! :file {:id file-id})
(rx/subs (fn [{:keys [data]}]
(let [objs (get-in data [:pages-index page-id :objects])
objs (adapt-root-frame objs object-id)]
(reset! objects objs)))))]
(fn [] (rx/dispose! subs))))
(when @objects
[:& object-svg {:objects @objects
:object-id object-id
:zoom 1}])))