课堂展示：画布选中物品，移除优化

src/renderer/src/components/whiteboard/whiteboard.vue

@@ -1,12 +1,6 @@
 <template>
   <div class="whiteboart-container" :style="{ height: height + 'px' }">
-    <div class="canvasBox" ref="box" 
-      @mousedown="handleMouseDown"
-      @mousemove="handleMouseMove"
-      @mouseup="handleMouseUp"
-      @mouseleave="handleMouseLeave" 
-    
-    ></div>
+    <div class="canvasBox" ref="box"  @mouseleave="handleMouseLeave" ></div>
 
     <div class="footerLeft" @click.stop
       :style="type == 'design' ? ['top: 10px', 'justify-content: space-between'] : ['bottom: 10px', 'justify-content: center']">
@@ -358,10 +352,6 @@ const currentType = ref('selection')
 
 // dom节点
 const box = ref(null)
-const  startX= ref(0)
-const  startY= ref(0) 
-const  endX= ref(0) 
-const  endY= ref(0) 
 
 // 应用实例
 let app = null
@@ -518,10 +508,6 @@ const backToCenter = () => {
   app.scrollToCenter()
 }
 
-const cancelActiveElement = () =>{
-  app.cancelActiveElement()
-}
-
 
 // 显示全部
 const showFit = () => {
@@ -755,7 +741,7 @@ const init = () => {
   })
   // 监听元素激活事件
   app.on('activeElementChange', element => {
-    console.log('点击元素 监听 activeElementChange-----------', element)
+    console.log('点击元素 监听 activeElementChange-----------')
     if (activeElement.value) {
       activeElement.value.off('elementRotateChange', onElementRotateChange)
     }
@@ -805,7 +791,6 @@ const init = () => {
   })
 }
 
-const isDragging = ref(false);
 /**
  * 课堂展示-鼠标离开白板监听事件：该事件是避免，选中状态，在其他地方点击、后退、删除等事件，会删除白板内选中的元素
  */
@@ -813,27 +798,8 @@ const handleMouseLeave = () => {
   console.log('离开白板')
   // 清除激活项--点击事件的激活项
   app.cancelActiveElement()
-
-  // this.isDragging = false;
-  //     this.drawRectangle();
+  // TODO 缺失点击拖动范围的取消激活项……
 };
-const handleMouseDown = (event) =>{
-  // this.isDragging = true;
-  // this.startX = event.clientX;
-  // this.startY = event.clientY;
-}
-const  handleMouseMove =(event)=> {
-  // if (this.isDragging) {
-  //   this.endX = event.clientX;
-  //   this.endY = event.clientY;
-  //   this.drawRectangle();
-  // }
-}
-const handleMouseUp = () =>{
-  // this.isDragging = false;
-  // this.drawRectangle();
-}
-
 
 // 暴露方法
 defineExpose({
@@ -844,7 +810,6 @@ defineExpose({
   getCanvasBase64,
   setCanvasData,
   getCanvasBlob,
-  cancelActiveElement
 })
 </script>
 

src/renderer/src/views/classTask/newClassTaskAssign/index.vue

@@ -814,6 +814,7 @@ const editWork = async (cform) =>{
   let res = await updateClasswork(cform);
   if (res.code == 200) {
     ElMessage.success('更新成功');
+    taskList.value = []
     // 清空左侧 选中的布置列表 并刷新列表
     if(isShow.value){
       currentRow.value.id = 1;