vue实现悬浮窗

Vue 实现悬浮窗的方法

使用固定定位和动态样式

通过CSS的position: fixed属性实现悬浮窗的基本定位，结合Vue的数据绑定动态调整样式。

<template>
  <div class="floating-window" :style="{ top: top + 'px', left: left + 'px' }">
    <div class="header" @mousedown="startDrag">
      悬浮窗标题
    </div>
    <div class="content">
      悬浮窗内容
    </div>
  </div>
</template>

<script>
export default {
  data() {
    return {
      top: 100,
      left: 100,
      isDragging: false,
      startX: 0,
      startY: 0
    };
  },
  methods: {
    startDrag(e) {
      this.isDragging = true;
      this.startX = e.clientX - this.left;
      this.startY = e.clientY - this.top;
      document.addEventListener('mousemove', this.drag);
      document.addEventListener('mouseup', this.stopDrag);
    },
    drag(e) {
      if (this.isDragging) {
        this.left = e.clientX - this.startX;
        this.top = e.clientY - this.startY;
      }
    },
    stopDrag() {
      this.isDragging = false;
      document.removeEventListener('mousemove', this.drag);
      document.removeEventListener('mouseup', this.stopDrag);
    }
  }
};
</script>

<style>
.floating-window {
  position: fixed;
  width: 300px;
  height: 200px;
  background: #fff;
  border: 1px solid #ddd;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
  z-index: 1000;
}
.header {
  padding: 10px;
  background: #f5f5f5;
  cursor: move;
}
.content {
  padding: 10px;
}
</style>

使用Vue过渡动画

为悬浮窗添加显示/隐藏的过渡效果，提升用户体验。

<template>
  <transition name="fade">
    <div class="floating-window" v-if="visible">
      悬浮窗内容
      <button @click="visible = false">关闭</button>
    </div>
  </transition>
</template>

<script>
export default {
  data() {
    return {
      visible: true
    };
  }
};
</script>

<style>
.fade-enter-active, .fade-leave-active {
  transition: opacity 0.3s;
}
.fade-enter, .fade-leave-to {
  opacity: 0;
}
</style>

封装为可复用组件

将悬浮窗封装为独立的Vue组件，方便在项目中多次调用。

<!-- FloatingWindow.vue -->
<template>
  <div class="floating-window" :style="style">
    <slot></slot>
  </div>
</template>

<script>
export default {
  props: {
    width: {
      type: String,
      default: '300px'
    },
    height: {
      type: String,
      default: '200px'
    },
    top: {
      type: String,
      default: '100px'
    },
    left: {
      type: String,
      default: '100px'
    }
  },
  computed: {
    style() {
      return {
        width: this.width,
        height: this.height,
        top: this.top,
        left: this.left
      };
    }
  }
};
</script>

使用第三方库

对于更复杂的需求，可以考虑使用专门处理拖拽和悬浮的第三方库，如vue-draggable。

npm install vue-draggable

<template>
  <draggable v-model="position" @start="drag=true" @end="drag=false">
    <div class="floating-window">
      可拖拽悬浮窗
    </div>
  </draggable>
</template>

<script>
import draggable from 'vuedraggable';

export default {
  components: { draggable },
  data() {
    return {
      position: { x: 100, y: 100 },
      drag: false
    };
  }
};
</script>

响应式调整

根据窗口大小变化自动调整悬浮窗位置，避免超出可视区域。

mounted() {
  window.addEventListener('resize', this.adjustPosition);
},
methods: {
  adjustPosition() {
    const windowWidth = window.innerWidth;
    const windowHeight = window.innerHeight;
    if (this.left > windowWidth - 300) {
      this.left = windowWidth - 300;
    }
    if (this.top > windowHeight - 200) {
      this.top = windowHeight - 200;
    }
  }
},
beforeDestroy() {
  window.removeEventListener('resize', this.adjustPosition);
}