fix: 优化画布背景层居中逻辑，确保在没有裁剪路径时自动居中

src/component/Canvas/CanvasEditor/managers/CanvasManager.js

@@ -448,6 +448,9 @@ export class CanvasManager {
     // 获取背景对象
     const backgroundObject = visibleObjects.find((obj) => obj.isBackground);
 
+    !this.canvas?.clipPath &&
+      this.centerBackgroundLayer(this.canvas.width, this.canvas.height);
+
     this.canvas?.clipPath?.set?.({
       left: this.width / 2,
       top: this.height / 2,
@@ -1031,11 +1034,11 @@ export class CanvasManager {
 
         // 重置视图变换以确保元素位置正确
         this._resetViewportTransform(1);
-        let canvasClipPath = null;
-        // 克隆当前裁剪路径
-        if (this.canvas?.clipPath) {
-          canvasClipPath = this.canvas?.clipPath;
-        }
+        // let canvasClipPath = null;
+        // // 克隆当前裁剪路径
+        // if (this.canvas?.clipPath) {
+        //   canvasClipPath = this.canvas?.clipPath;
+        // }
 
         // 清除当前画布内容
         // this.canvas.clear();  // 清除画布内容  可以先去掉   这样加载闪动的情况就比较少  如果有问题 可以再打开
@@ -1047,26 +1050,28 @@ export class CanvasManager {
             // 清空重做栈
             this.commandManager?.clear?.();
             this.backgroundColor = parsedJson.backgroundColor || "#ffffff";
-            if (canvasClipPath) {
-              // canvasClipPath.set({
-              //   absolutePositioned: true,
-              // });
-              this.canvas.clipPath = canvasClipPath;
-              // await new Promise((resolve) => {
-              //   debugger;
-              //   fabric.util.enlivenObjects([canvasClipPath], (clipPaths) => {
-              //     if (clipPaths && clipPaths.length > 0) {
-              //       resolve(clipPaths[0]);
-              //     } else {
-              //       resolve(null);
-              //     }
-              //   });
-              // });
-              // debugger;
-            }
+            // if (canvasClipPath) {
+            //   // canvasClipPath.set({
+            //   //   absolutePositioned: true,
+            //   // });
+            //   this.canvas.clipPath = canvasClipPath;
+            //   // await new Promise((resolve) => {
+            //   //   debugger;
+            //   //   fabric.util.enlivenObjects([canvasClipPath], (clipPaths) => {
+            //   //     if (clipPaths && clipPaths.length > 0) {
+            //   //       resolve(clipPaths[0]);
+            //   //     } else {
+            //   //       resolve(null);
+            //   //     }
+            //   //   });
+            //   // });
+            //   // debugger;
+            // }
             try {
               // 重置画布数据
               this.setCanvasSize(this.canvas.width, this.canvas.height);
+              this.centerBackgroundLayer(this.canvas.width, this.canvas.height);
+              debugger;
               // 重新构建对象关系
               // restoreObjectLayerAssociations(this.layers.value, this.canvas.getObjects());
               // 验证图层关联关系  -  稳定后可以注释