请使用 vue和element-ui js mouseevent事件 实现弹窗 的四个角和四条边进行放大缩小，其他属性有 v-dialogDrag， :modal="false"， :close-on-click-modal="false"，弹窗默认显示，请用具体代码实现

好的，我可以为您提供相关的代码示例：

<template>
  <div>
    <el-button type="primary" @click="dialogVisible = true">点击打开弹窗</el-button>
    <el-dialog
      :visible.sync="dialogVisible"
      :modal="false"
      :close-on-click-modal="false"
      v-dialogDrag
      class="resizable-dialog"
    >
      <div class="resize-handle top-left" @mousedown="startResize($event, 'topLeft')"></div>
      <div class="resize-handle top-right" @mousedown="startResize($event, 'topRight')"></div>
      <div class="resize-handle bottom-left" @mousedown="startResize($event, 'bottomLeft')"></div>
      <div class="resize-handle bottom-right" @mousedown="startResize($event, 'bottomRight')"></div>
      <div class="resize-handle top" @mousedown="startResize($event, 'top')"></div>
      <div class="resize-handle right" @mousedown="startResize($event, 'right')"></div>
      <div class="resize-handle bottom" @mousedown="startResize($event, 'bottom')"></div>
      <div class="resize-handle left" @mousedown="startResize($event, 'left')"></div>
      <span slot="title">可调整大小的弹窗</span>
      <p>在这里可以添加弹窗的内容</p>
    </el-dialog>
  </div>
</template>

<script>
export default {
  data() {
    return {
      dialogVisible: false,
      resizing: false,
      resizeType: null,
      startX: null,
      startY: null,
      startWidth: null,
      startHeight: null
    }
  },
  methods: {
    startResize(event, type) {
      this.resizing = true
      this.resizeType = type
      this.startX = event.clientX
      this.startY = event.clientY
      this.startWidth = this.$refs.dialog.$el.offsetWidth
      this.startHeight = this.$refs.dialog.$el.offsetHeight
    },
    endResize() {
      this.resizing = false
      this.resizeType = null
      this.startX = null
      this.startY = null
      this.startWidth = null
      this.startHeight = null
    },
    handleMouseMove(event) {
      if (this.resizing) {
        const deltaX = event.clientX - this.startX
        const deltaY = event.clientY - this.startY
        let newWidth = this.startWidth
        let newHeight = this.startHeight
        let newLeft = this.$refs.dialog.$el.offsetLeft
        let newTop = this.$refs.dialog.$el.offsetTop

        switch (this.resizeType) {
          case 'topLeft':
            newWidth -= deltaX
            newHeight -= deltaY
            newLeft += deltaX
            newTop += deltaY
            break
          case 'topRight':
            newWidth += deltaX
            newHeight -= deltaY
            newTop += deltaY
            break
          case 'bottomLeft':
            newWidth -= deltaX
            newHeight += deltaY
            newLeft += deltaX
            break
          case 'bottomRight':
            newWidth += deltaX
            newHeight += deltaY
            break
          case 'top':
            newHeight -= deltaY
            newTop += deltaY
            break
          case 'right':
            newWidth += deltaX
            break
          case 'bottom':
            newHeight += deltaY
            break
          case 'left':
            newWidth -= deltaX
            newLeft += deltaX
            break
        }

        this.$refs.dialog.$el.style.width = newWidth + 'px'
        this.$refs.dialog.$el.style.height = newHeight + 'px'
        this.$refs.dialog.$el.style.left = newLeft + 'px'
        this.$refs.dialog.$el.style.top = newTop + 'px'
      }
    }
  },
  mounted() {
    document.addEventListener('mouseup', this.endResize)
    document.addEventListener('mousemove', this.handleMouseMove)
  },
  beforeDestroy() {
    document.removeEventListener('mouseup', this.endResize)
    document.removeEventListener('mousemove', this.handleMouseMove)
  }
}
</script>

<style>
.resizable-dialog {
  position: absolute !important;
  top: 50% !important;
  left: 50% !important;
  transform: translate(-50%, -50%) !important;
}

.resize-handle {
  position: absolute;
  width: 10px;
  height: 10px;
  background-color: #999;
}

.resize-handle.top-left {
  top: -5px;
  left: -5px;
  cursor: nwse-resize;
}

.resize-handle.top-right {
  top: -5px;
  right: -5px;
  cursor: nesw-resize;
}

.resize-handle.bottom-left {
  bottom: -5px;
  left: -5px;
  cursor: nesw-resize;
}

.resize-handle.bottom-right {
  bottom: -5px;
  right: -5px;
  cursor: nwse-resize;
}

.resize-handle.top {
  top: -5px;
  left: 50%;
  transform: translateX(-50%);
  cursor: ns-resize;
}

.resize-handle.right {
  top: 50%;
  right: -5px;
  transform: translateY(-50%);
  cursor: ew-resize;
}

.resize-handle.bottom {
  bottom: -5px;
  left: 50%;
  transform: translateX(-50%);
  cursor: ns-resize;
}

.resize-handle.left {
  top: 50%;
  left: -5px;
  transform: translateY(-50%);
  cursor: ew-resize;
}
</style>

在这个示例中，我们使用了 `v-dialogDrag` 指令使弹窗可以被拖拽，同时添加了可以调整大小的功能。具体地，我们在弹窗的四个角和四条边添加了可拖拽的缩放手柄，并在鼠标按下时监听 `mousedown` 事件，记录下当前的位置信息和弹窗的尺寸，然后在鼠标移动时根据手柄的位置和拖拽的距离计算出新的尺寸和位置，并更新弹窗的样式。在松开鼠标时，我们要将缩放状态重置回原始状态。同时，我们使用了 `@mousemove` 和 `@mouseup` 事件在全局范围内监听鼠标移动和松开的事件，以避免在拖拽时鼠标移动出了弹窗的范围。