合并画布

src/component/Canvas/CanvasEditor/commands/BackgroundCommands.js

@@ -212,6 +212,10 @@ export class BackgroundSizeCommand extends Command {
     this.canvas.setWidth(this.newWidth);
     this.canvas.setHeight(this.newHeight);
 
+    console.log(
+      `调整画布大小：${this.oldWidth}x${this.oldHeight} -> ${this.newWidth}x${this.newHeight}`
+    );
+
     // 如果使用 CanvasManager，通知它画布大小变化
     if (
       this.canvasManager &&