解决图层选中状态消失问题

src/component/Canvas/CanvasEditor/components/LayersPanel/LayersPanel.vue

@@ -589,11 +589,11 @@ function handleLayerClick(layer, event) {
         layerManager?.setAllActiveGroupLayerCanvasObject?.(layer);
         setActiveLayer(layer.children[0].id, { parentId: layer.id });
       } else {
+        // 选中画布中的图层对象
+        layerManager?.selectLayerObjects(layer.id);
         // 否则直接设置当前图层为活动图层
         setActiveLayer(layer.id);
         layerManager?.updateLayersObjectsInteractivity();
-        // 选中画布中的图层对象
-        layerManager?.selectLayerObjects(layer.id);
       }
     }
     lastSelectedIndex.value = sortableRootLayers.value.findIndex((l) => l.id === layer.id);

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

@@ -822,8 +822,8 @@ export class CanvasManager {
 
     try {
       // 如果当前有选中对象，先清除选中状态 否则导出有问题
-      this.canvas.discardActiveObject(); // 清除选中状态
-      this.canvas.renderAll(); // 重新渲染画布
+      // this.canvas.discardActiveObject(); // 清除选中状态
+      // this.canvas.renderAll(); // 重新渲染画布
       // 自动设置红绿图模式相关参数
       const enhancedOptions = {
         ...options,

src/component/HomePage/Generate.vue

@@ -1416,6 +1416,7 @@ export default defineComponent({
             display: block;
             max-height: 100%;
             max-width: 100%;
+			object-fit: contain;
           }
 
           .delete_file_block {

src/component/home/design/collection/SketchboardUpload.vue

@@ -692,6 +692,7 @@ export default defineComponent({
                     display: block;
                     max-height: 100%;
                     max-width: 100%;
+					object-fit: contain;
                 }
 				&:hover .delete_like_file_block{
 						// display: block;