penpot/frontend/src/app/render.cljs
2023-06-19 13:08:11 +02:00

281 lines
9.4 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.render
"The main entry point for UI part needed by the exporter."
(:require
[app.common.geom.shapes.bounds :as gsb]
[app.common.logging :as l]
[app.common.math :as mth]
[app.common.spec :as us]
[app.common.types.components-list :as ctkl]
[app.common.uri :as u]
[app.main.data.fonts :as df]
[app.main.features :as feat]
[app.main.render :as render]
[app.main.repo :as repo]
[app.main.store :as st]
[app.util.dom :as dom]
[app.util.globals :as glob]
[beicon.core :as rx]
[clojure.spec.alpha :as s]
[cuerdas.core :as str]
[garden.core :refer [css]]
[rumext.v2 :as mf]))
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;; SETUP
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
(l/setup! {:app :info})
(declare ^:private render-single-object)
(declare ^:private render-components)
(declare ^:private render-objects)
(defn- parse-params
[loc]
(let [href (unchecked-get loc "href")]
(some-> href u/uri :query u/query-string->map)))
(defn init-ui
[]
(when-let [params (parse-params glob/location)]
(when-let [component (case (:route params)
"objects" (render-objects params)
"components" (render-components params)
nil)]
(mf/mount component (dom/get-element "app")))))
(defn ^:export init
[]
(st/emit! (feat/initialize))
(init-ui))
(defn reinit
[]
(mf/unmount (dom/get-element "app"))
(init-ui))
(defn ^:dev/after-load after-load
[]
(reinit))
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;; COMPONENTS
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;; ---- SINGLE OBJECT
(defn use-resource
"A general purpose hook for retrieve or subscribe to remote changes
using the reactive-streams mechanism mechanism.
It receives a function to execute for retrieve the stream that will
be used for creating the subscription. The function should be
stable, so is the responsibility of the user of this hook to
properly memoize it.
TODO: this should be placed in some generic hooks namespace but his
right now is pending of refactor and it will be done later."
[f]
(let [[state ^js update-state!] (mf/useState {:loaded? false})]
(mf/with-effect [f]
(update-state! (fn [prev] (assoc prev :refreshing? true)))
(let [on-value (fn [data]
(update-state! #(-> %
(assoc :refreshing? false)
(assoc :loaded? true)
(merge data))))
subs (rx/subscribe (f) on-value)]
#(rx/dispose! subs)))
state))
(mf/defc object-svg
[{:keys [page-id file-id object-id render-embed?]}]
(let [components-v2 (feat/use-feature :components-v2)
fetch-state (mf/use-fn
(mf/deps file-id page-id object-id components-v2)
(fn []
(let [features (cond-> #{} components-v2 (conj "components/v2"))]
(->> (rx/zip
(repo/cmd! :get-font-variants {:file-id file-id})
(repo/cmd! :get-page {:file-id file-id
:page-id page-id
:object-id object-id
:features features}))
(rx/tap (fn [[fonts]]
(when (seq fonts)
(st/emit! (df/fonts-fetched fonts)))))
(rx/map (comp :objects second))
(rx/map (fn [objects]
(let [objects (render/adapt-objects-for-shape objects object-id)]
{:objects objects
:object (get objects object-id)})))))))
{:keys [objects object]} (use-resource fetch-state)]
;; Set the globa CSS to assign the page size, needed for PDF
;; exportation process.
(mf/with-effect [object]
(when object
(let [{:keys [width height]} (gsb/get-object-bounds [objects] object)]
(dom/set-page-style!
{:size (str/concat
(mth/ceil width) "px "
(mth/ceil height) "px")}))))
(when objects
[:& render/object-svg
{:objects objects
:object-id object-id
:render-embed? render-embed?}])))
(mf/defc objects-svg
[{:keys [page-id file-id object-ids render-embed?]}]
(let [components-v2 (feat/use-feature :components-v2)
fetch-state (mf/use-fn
(mf/deps file-id page-id components-v2)
(fn []
(let [features (cond-> #{} components-v2 (conj "components/v2"))]
(->> (rx/zip
(repo/cmd! :get-font-variants {:file-id file-id})
(repo/cmd! :get-page {:file-id file-id
:page-id page-id
:features features}))
(rx/tap (fn [[fonts]]
(when (seq fonts)
(st/emit! (df/fonts-fetched fonts)))))
(rx/map (comp :objects second))))))
objects (use-resource fetch-state)]
(when objects
(for [object-id object-ids]
(let [objects (render/adapt-objects-for-shape objects object-id)]
[:& render/object-svg
{:objects objects
:key (str object-id)
:object-id object-id
:render-embed? render-embed?}])))))
(s/def ::page-id ::us/uuid)
(s/def ::file-id ::us/uuid)
(s/def ::object-id
(s/or :single ::us/uuid
:multiple (s/coll-of ::us/uuid)))
(s/def ::embed ::us/boolean)
(s/def ::render-objects
(s/keys :req-un [::file-id ::page-id ::object-id]
:opt-un [::render-embed]))
(defn- render-objects
[params]
(let [{:keys [file-id
page-id
render-embed]
:as params}
(us/conform ::render-objects params)
[type object-id] (:object-id params)]
(case type
:single
(mf/html
[:& object-svg
{:file-id file-id
:page-id page-id
:object-id object-id
:render-embed? render-embed}])
:multiple
(mf/html
[:& objects-svg
{:file-id file-id
:page-id page-id
:object-ids (into #{} object-id)
:render-embed? render-embed}]))))
;; ---- COMPONENTS SPRITE
(mf/defc components-sprite-svg
[{:keys [file-id embed] :as props}]
(let [fetch (mf/use-fn
(mf/deps file-id)
(fn [] (repo/cmd! :get-file {:id file-id})))
file (use-resource fetch)
state (mf/use-state nil)]
(when file
[:*
[:style
(css [[:body
{:margin 0
:overflow "hidden"
:width "100vw"
:height "100vh"}]
[:main
{:overflow "auto"
:display "flex"
:justify-content "center"
:align-items "center"
:height "calc(100vh - 200px)"}
[:svg {:width "50%"
:height "50%"}]]
[:.nav
{:display "flex"
:margin 0
:padding "10px"
:flex-direction "column"
:flex-wrap "wrap"
:height "200px"
:list-style "none"
:overflow-x "scroll"
:border-bottom "1px dotted #e6e6e6"}
[:a {:cursor :pointer
:text-overflow "ellipsis"
:white-space "nowrap"
:overflow "hidden"
:text-decoration "underline"}]
[:li {:display "flex"
:width "150px"
:padding "5px"
:border "0px solid black"}]]])]
[:ul.nav
(for [[id data] (ctkl/components (:data file))]
(let [on-click (fn [event]
(dom/prevent-default event)
(swap! state assoc :component-id id))]
[:li {:key (str id)}
[:a {:on-click on-click} (:name data)]]))]
[:main
[:& render/components-sprite-svg
{:data (:data file)
:embed embed}
(when-let [component-id (:component-id @state)]
[:use {:x 0 :y 0 :href (str "#" component-id)}])]]
])))
(s/def ::component-id ::us/uuid)
(s/def ::render-components
(s/keys :req-un [::file-id]
:opt-un [::embed ::component-id]))
(defn render-components
[params]
(let [{:keys [file-id component-id embed]} (us/conform ::render-components params)]
(mf/html
[:& components-sprite-svg
{:file-id file-id
:component-id component-id
:embed embed}])))