feat(ebiz): 优化FAB组件拖拽功能

- 修复当移动浮窗之后，点击其他地方浮窗会出现点击位置的问题
- 完善拖拽相关数据字段注释
- 新增窗口大小更新方法
- 重构拖拽开始、进行和结束逻辑
- 添加触摸事件支持和边界限制
- 实现点击与拖拽事件的正确分离

src/views/ebiz/saleFlowProImprove/components/fab.vue

@@ -30,18 +30,20 @@ export default {
 
   data() {
     return {
-      isDragging: false,
-      hasDragged: false, // 新增：标记是否发生了拖拽
-      startX: 0,
-      startY: 0,
-      posX: 0,
-      posY: 0,
-      windowWidth: 0,
-      windowHeight: 0,
-      fabWidth: 0,
-      fabHeight: 0,
-      initialX: 0,
-      initialY: 0
+      isDragging: false, // 是否正在拖动
+      hasDragged: false, // 是否发生了拖拽
+      startX: 0, // 触摸点相对于元素左上角的X偏移
+      startY: 0, // 触摸点相对于元素左上角的Y偏移
+      posX: 0, // 元素当前位置X
+      posY: 0, // 元素当前位置Y
+      initialTouchX: 0, // 初始触摸点X
+      initialTouchY: 0, // 初始触摸点Y
+      windowWidth: 0, // 视口宽度
+      windowHeight: 0, // 视口高度
+      fabWidth: 0, // FAB宽度
+      fabHeight: 0, // FAB高度
+      initialX: 0, // 初始位置X
+      initialY: 0 // 初始位置Y
     }
   },
 
@@ -79,6 +81,9 @@ export default {
   },
 
   methods: {
+    /**
+     * 更新窗口大小
+     */
     updateWindowSize() {
       this.windowWidth = window.innerWidth
       this.windowHeight = window.innerHeight
@@ -90,89 +95,128 @@ export default {
       }
     },
 
+    /**
+     * 开始拖动
+     * @param event {TouchEvent}
+     */
     startDrag(event) {
       if (!this.draggable) return
 
+      // 阻止默认行为（如页面滚动）和事件冒泡
+      event.preventDefault()
+      event.stopPropagation()
+
+      const touch = event.touches[0]
+
+      // 记录初始触摸位置
+      this.initialTouchX = touch.clientX
+      this.initialTouchY = touch.clientY
+
+      // 记录元素当前位置和触摸点的偏移
+      this.startX = touch.clientX - this.posX
+      this.startY = touch.clientY - this.posY
+
+      // 设置拖动状态
       this.isDragging = true
       this.hasDragged = false
 
-      const clientX = event.touches ? event.touches[0].clientX : event.clientX
-      const clientY = event.touches ? event.touches[0].clientY : event.clientY
-
-      this.startX = clientX - this.posX
-      this.startY = clientY - this.posY
-
+      // 禁用文本选择
       document.body.style.userSelect = 'none'
-
-      const options = { passive: false }
-      document.addEventListener('mousemove', this.onDrag, options)
-      document.addEventListener('touchmove', this.onDrag, options)
-      document.addEventListener('mouseup', this.stopDrag, options)
-      document.addEventListener('touchend', this.stopDrag, options)
+      document.body.style.webkitUserSelect = 'none'
     },
 
+    /**
+     * 拖动中
+     * @param event { TouchEvent }
+     */
     onDrag(event) {
       if (!this.isDragging) return
 
-      this.hasDragged = true
+      // 阻止默认行为（如页面滚动）
+      event.preventDefault()
+      event.stopPropagation()
 
-      const clientX = event.touches ? event.touches[0].clientX : event.clientX
-      const clientY = event.touches ? event.touches[0].clientY : event.clientY
+      // 获取当前触摸点
+      const touch = event.touches[0]
 
-      let newX = clientX - this.startX
-      let newY = clientY - this.startY
+      // 计算新位置（相对于初始触摸点的偏移）
+      let newX = touch.clientX - this.startX
+      let newY = touch.clientY - this.startY
 
+      // 应用边界限制
       if (this.boundary) {
-        newX = Math.max(0, Math.min(newX, this.windowWidth - this.fabWidth))
-        newY = Math.max(0, Math.min(newY, this.windowHeight - this.fabHeight))
+        const maxX = this.windowWidth - this.fabWidth
+        const maxY = this.windowHeight - this.fabHeight
+
+        // 确保不会移出视口
+        newX = Math.max(0, Math.min(newX, maxX))
+        newY = Math.max(0, Math.min(newY, maxY))
       }
 
+      // 使用transform实现平滑移动
       this.posX = newX
       this.posY = newY
+
+      // 标记为已拖动，防止点击事件触发
+      if (Math.abs(touch.clientX - this.initialTouchX) > 5 || Math.abs(touch.clientY - this.initialTouchY) > 5) {
+        this.hasDragged = true
+      }
     },
 
+    /**
+     * 拖动结束
+     * @param event { TouchEvent }
+     */
     stopDrag(event) {
       if (!this.isDragging) return
 
       this.isDragging = false
       document.body.style.userSelect = ''
+      this.removeEventListeners()
 
-      // 如果是拖拽结束，阻止后续的点击事件
-      if (this.hasDragged) {
-        // 延迟重置标志位，确保不会触发点击事件
-        setTimeout(() => {
-          this.hasDragged = false
-        }, 100)
+      // 阻止事件冒泡，避免触发父元素的点击事件
+      if (event) {
+        event.stopPropagation()
+        event.preventDefault()
       }
 
-      this.removeEventListeners()
       this.$emit('drag-end', { x: this.posX, y: this.posY })
     },
 
+    /**
+     * 点击事件
+     * @param event { TouchEvent }
+     */
     handleClick(event) {
       // 如果是拖拽操作，不触发点击事件
-      if (this.isDragging || this.hasDragged) {
+      if (this.hasDragged) {
         event.stopPropagation()
+        event.preventDefault()
         this.hasDragged = false
-        return
+        return false
       }
       this.$emit('click', event)
+      return true
     },
 
+    /**
+     * 移除事件监听器
+     */
     removeEventListeners() {
-      const options = { passive: false }
-      document.removeEventListener('mousemove', this.onDrag, options)
-      document.removeEventListener('touchmove', this.onDrag, options)
-      document.removeEventListener('mouseup', this.stopDrag, options)
-      document.removeEventListener('touchend', this.stopDrag, options)
+      // 恢复用户选择
+      document.body.style.userSelect = ''
+      document.body.style.webkitUserSelect = ''
+
+      // 重置拖动状态
+      this.isDragging = false
     }
   }
 }
 </script>
 
 <template>
-  <div ref="fab" :style="fabStyle" class="fab-container" @mousedown="startDrag" @touchstart="startDrag">
-    <div class="fab-content" @click="handleClick" @touchend="handleClick">
+  <div ref="fab" :style="fabStyle" class="fab-container" @touchend="handleClick" @touchmove="onDrag" @touchstart="startDrag">
+    <div class="fab-content">
       <slot>
         <div class="fab-default">
           <i v-if="icon" :class="icon"></i>
@@ -188,9 +232,10 @@ $base: #e9332e;
 
 .fab-container {
   position: fixed;
-  cursor: move;
   user-select: none;
+  -webkit-user-select: none;
   touch-action: none;
+  -webkit-tap-highlight-color: transparent;
 }
 
 .fab-content {