fix: 修复多个已知问题

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

@@ -28,6 +28,7 @@ import {
   simplifyLayers,
   validateLayerAssociations,
 } from "../utils/layerUtils";
+import { imageModeHandler } from "../utils/imageHelper";
 
 export class CanvasManager {
   constructor(canvasElement, options) {
@@ -107,6 +108,23 @@ export class CanvasManager {
           id: fabricImage.id || generateId("brush_img_"),
         });
 
+        if (options.imageMode) {
+          imageModeHandler({
+            imageMode: options.imageMode,
+            newImage: fabricImage,
+            canvasWidth: this.canvasWidth.value,
+            canvasHeight: this.canvasHeight.value,
+          });
+
+          // 默认居中
+          fabricImage.set({
+            originX: "center",
+            originY: "center",
+            left: this.canvas.width / 2,
+            top: this.canvas.height / 2,
+          });
+        }
+
         // 执行高保真合并操作
         await this.eventManager?.mergeLayerObjectsForPerformance?.({
           fabricImage,