feat:redraw when device pixel ratio change

Hufe921 · Feb 19, 2023 · 4c370ae · 4c370ae
1 parent 189e88c
commit 4c370ae
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Showing 3 changed files with 32 additions and 3 deletions.
diff --git a/.vscode/settings.json b/.vscode/settings.json
@@ -5,8 +5,10 @@
     "colspan",
     "compositionend",
     "compositionstart",
+    "contenteditable",
     "contextmenu",
     "deletable",
+    "dppx",
     "inputarea",
     "linebreak",
     "prismjs",
@@ -17,9 +19,8 @@
     "TEXTLIKE",
     "trlist",
     "vite",
-    "Yahei",
     "vitepress",
-    "contenteditable"
+    "Yahei"
   ],
   "cSpell.ignorePaths": [
     ".github",

diff --git a/src/editor/core/draw/Draw.ts b/src/editor/core/draw/Draw.ts
@@ -463,16 +463,21 @@ export class Draw {
   }
 
   public setPageScale(payload: number) {
+    const dpr = window.devicePixelRatio
     this.options.scale = payload
     const width = this.getWidth()
     const height = this.getHeight()
     this.container.style.width = `${width}px`
-    this.pageList.forEach(p => {
+    this.pageList.forEach((p, i) => {
       p.width = width
       p.height = height
       p.style.width = `${width}px`
       p.style.height = `${height}px`
       p.style.marginBottom = `${this.getPageGap()}px`
+      // 分辨率
+      p.width = width * dpr
+      p.height = height * dpr
+      this.ctxList[i].scale(dpr, dpr)
     })
     this.render({
       isSubmitHistory: false,
@@ -483,6 +488,21 @@ export class Draw {
     }
   }
 
+  public setPageDevicePixel() {
+    const dpr = window.devicePixelRatio
+    const width = this.getWidth()
+    const height = this.getHeight()
+    this.pageList.forEach((p, i) => {
+      p.width = width * dpr
+      p.height = height * dpr
+      this.ctxList[i].scale(dpr, dpr)
+    })
+    this.render({
+      isSubmitHistory: false,
+      isSetCursor: false
+    })
+  }
+
   public setPaperSize(width: number, height: number) {
     this.options.width = width
     this.options.height = height

diff --git a/src/editor/core/event/GlobalEvent.ts b/src/editor/core/event/GlobalEvent.ts
@@ -24,6 +24,7 @@ export class GlobalEvent {
   private hyperlinkParticle: HyperlinkParticle
   private control: Control
   private dateParticle: DateParticle
+  private dprMediaQueryList: MediaQueryList
 
   constructor(draw: Draw, canvasEvent: CanvasEvent) {
     this.draw = draw
@@ -37,6 +38,7 @@ export class GlobalEvent {
     this.hyperlinkParticle = draw.getHyperlinkParticle()
     this.dateParticle = draw.getDateParticle()
     this.control = draw.getControl()
+    this.dprMediaQueryList = window.matchMedia(`(resolution: ${window.devicePixelRatio}dppx)`)
   }
 
   public register() {
@@ -51,6 +53,7 @@ export class GlobalEvent {
     document.addEventListener('mouseup', this.setCanvasEventAbility)
     document.addEventListener('wheel', this.setPageScale, { passive: false })
     document.addEventListener('visibilitychange', this._handleVisibilityChange)
+    this.dprMediaQueryList.addEventListener('change', this._handleDprChange)
   }
 
   public removeEvent() {
@@ -60,6 +63,7 @@ export class GlobalEvent {
     document.removeEventListener('mouseup', this.setCanvasEventAbility)
     document.removeEventListener('wheel', this.setPageScale)
     document.removeEventListener('visibilitychange', this._handleVisibilityChange)
+    this.dprMediaQueryList.removeEventListener('change', this._handleDprChange)
   }
 
   public recoverEffect = (evt: Event) => {
@@ -124,4 +128,8 @@ export class GlobalEvent {
     }
   }
 
+  private _handleDprChange = () => {
+    this.draw.setPageDevicePixel()
+  }
+
 }