feat: 增加MeModal拖拽功能

src/components/me/modal/index.vue

@@ -1,7 +1,7 @@
 <!--------------------------------
  - @Author: Ronnie Zhang
  - @LastEditor: Ronnie Zhang
- - @LastEditTime: 2023/12/16 18:50:02
+ - @LastEditTime: 2024/01/13 17:41:38
  - @Email: zclzone@outlook.com
  - Copyright © 2023 Ronnie Zhang(大脸怪) | https://isme.top
  --------------------------------->
@@ -9,17 +9,17 @@
 <template>
   <n-modal
     v-model:show="show"
+    class="modal-box"
     :style="{ width: modalOptions.width, ...modalOptions.modalStyle }"
     :preset="undefined"
     size="huge"
     :bordered="false"
+    @after-leave="onAfterLeave"
   >
-    <n-card
-      :title="modalOptions.title"
-      :style="modalOptions.contentStyle"
-      :closable="modalOptions.closable"
-      @close="close()"
-    >
+    <n-card :style="modalOptions.contentStyle" :closable="modalOptions.closable" @close="close()">
+      <template #header>
+        <header class="modal-header">{{ modalOptions.title }}</header>
+      </template>
       <slot></slot>
 
       <!-- 底部按钮 -->
@@ -45,6 +45,7 @@
 </template>
 
 <script setup>
+import { initDrag } from './utils'
 const props = defineProps({
   width: {
     type: String,
@@ -101,12 +102,17 @@ const show = ref(false)
 const modalOptions = ref({})
 
 // 打开模态框
-function open(options = {}) {
+async function open(options = {}) {
   // 将props和options合并赋值给modalOptions
   modalOptions.value = { ...props, ...options }
 
   // 将show的值设置为true
   show.value = true
+  await nextTick()
+  initDrag(
+    Array.prototype.at.call(document.querySelectorAll('.modal-header'), -1),
+    Array.prototype.at.call(document.querySelectorAll('.modal-box'), -1)
+  )
 }
 
 // 定义一个close函数，用于关闭模态框
@@ -149,6 +155,14 @@ async function handleCancel(data) {
   }
 }
 
+async function onAfterLeave() {
+  await nextTick()
+  initDrag(
+    Array.prototype.at.call(document.querySelectorAll('.modal-header'), -1),
+    Array.prototype.at.call(document.querySelectorAll('.modal-box'), -1)
+  )
+}
+
 const okLoading = computed({
   get() {
     return !!modalOptions.value?.okLoading

src/components/me/modal/utils.js

@@ -0,0 +1,94 @@
+/**********************************
+ * @Author: Ronnie Zhang
+ * @LastEditor: Ronnie Zhang
+ * @LastEditTime: 2024/01/13 17:41:26
+ * @Email: zclzone@outlook.com
+ * Copyright © 2023 Ronnie Zhang(大脸怪) | https://isme.top
+ **********************************/
+
+// 获取元素的CSS样式
+function getCss(element, key) {
+  return element.currentStyle
+    ? element.currentStyle[key]
+    : window.getComputedStyle(element, null)[key]
+}
+
+const params = {
+  left: 0,
+  top: 0,
+  currentX: 0,
+  currentY: 0,
+  flag: false,
+}
+
+// 初始化拖拽
+export function initDrag(bar, box) {
+  if (!bar || !box) return
+  const screenWidth = document.body.clientWidth // 页面宽度
+  const screenHeight = document.documentElement.clientHeight // 页面可见区域高度
+
+  const dragDomWidth = box.offsetWidth // 盒子宽度
+  const dragDomHeight = box.offsetHeight // 盒子高度
+
+  const minDomLeft = box.offsetLeft // 盒子相对于父元素的左偏移量
+  const minDomTop = box.offsetTop // 盒子相对于父元素的上偏移量
+
+  const maxDragDomLeft = screenWidth - minDomLeft - dragDomWidth // 盒子在水平方向上可拖拽的最大距离
+  const maxDragDomTop = screenHeight - minDomTop - dragDomHeight // 盒子在垂直方向上可拖拽的最大距离
+
+  if (getCss(box, 'left') !== 'auto') {
+    params.left = getCss(box, 'left')
+  }
+  if (getCss(box, 'top') !== 'auto') {
+    params.top = getCss(box, 'top')
+  }
+
+  // 设置触发拖动元素的鼠标样式为移动图标
+  bar.style.cursor = 'move'
+
+  // 鼠标按下事件处理函数
+  bar.onmousedown = function (e) {
+    params.flag = true // 设置拖拽标志为true
+    e.preventDefault() // 阻止默认事件
+    params.currentX = e.clientX // 鼠标当前位置的X坐标
+    params.currentY = e.clientY // 鼠标当前位置的Y坐标
+  }
+  document.onmouseup = function () {
+    params.flag = false // 设置拖拽标志为false
+    if (getCss(box, 'left') !== 'auto') {
+      params.left = getCss(box, 'left')
+    }
+    if (getCss(box, 'top') !== 'auto') {
+      params.top = getCss(box, 'top')
+    }
+  }
+  document.onmousemove = function (e) {
+    e.preventDefault() // 阻止默认事件
+    // 如果拖拽标志为true
+    if (params.flag) {
+      const nowX = e.clientX // 鼠标当前位置的X坐标
+      const nowY = e.clientY // 鼠标当前位置的Y坐标
+      const disX = nowX - params.currentX // 鼠标移动的X距离
+      const disY = nowY - params.currentY // 鼠标移动的Y距离
+
+      let left = parseInt(params.left) + disX // 盒子元素的新left值
+      let top = parseInt(params.top) + disY // 盒子元素的新top值
+
+      // 拖出屏幕边缘
+      if (-left > minDomLeft) {
+        left = -minDomLeft
+      } else if (left > maxDragDomLeft) {
+        left = maxDragDomLeft
+      }
+
+      if (-top > minDomTop) {
+        top = -minDomTop
+      } else if (top > maxDragDomTop) {
+        top = maxDragDomTop
+      }
+
+      box.style.left = left + 'px'
+      box.style.top = top + 'px'
+    }
+  }
+}

src/views/base/test-modal.vue

@@ -1,7 +1,7 @@
 <!--------------------------------
  - @Author: Ronnie Zhang
  - @LastEditor: Ronnie Zhang
- - @LastEditTime: 2023/12/16 18:51:56
+ - @LastEditTime: 2024/01/13 17:41:47
  - @Email: zclzone@outlook.com
  - Copyright © 2023 Ronnie Zhang(大脸怪) | https://isme.top
  --------------------------------->
@@ -55,7 +55,7 @@ function openModal2() {
   $modal2.value?.open({
     cancelText: '关闭当前',
     okText: '关闭所有弹窗',
-    modalStyle: { width: '320px', padding: '12px', top: '100px' },
+    width: '400px',
     async onOk() {
       okLoading2.value = true
       $message.loading('正在关闭...', { key: 'modal2' })