fix: drawing background size error #254

src/editor/core/draw/Draw.ts

@@ -1679,7 +1679,7 @@ export class Draw {
     ctx.globalAlpha = !this.zone.isMainActive() ? inactiveAlpha : 1
     this._clearPage(pageNo)
     // 绘制背景
-    this.background.render(ctx)
+    this.background.render(ctx, pageNo)
     // 绘制页边距
     this.margin.render(ctx, pageNo)
     // 渲染元素

src/editor/core/draw/frame/Background.ts

@@ -7,9 +7,9 @@ export class Background {
     this.draw = draw
   }
 
-  public render(ctx: CanvasRenderingContext2D) {
-    const width = this.draw.getOriginalWidth()
-    const height = this.draw.getOriginalHeight()
+  public render(ctx: CanvasRenderingContext2D, pageNo: number) {
+    const width = this.draw.getCanvasWidth(pageNo)
+    const height = this.draw.getCanvasHeight(pageNo)
     ctx.save()
     ctx.fillStyle = '#ffffff'
     ctx.fillRect(0, 0, width, height)