2026-03-11 10:47:49 +08:00
|
|
|
|
<template>
|
|
|
|
|
|
<div class="drag-resize-container" ref="containerRef">
|
|
|
|
|
|
<!-- 可拖拽调整的元素 -->
|
|
|
|
|
|
<div
|
|
|
|
|
|
class="draggable-element"
|
|
|
|
|
|
ref="elementRef"
|
|
|
|
|
|
:style="{
|
|
|
|
|
|
left: `${position.x}px`,
|
|
|
|
|
|
top: `${position.y}px`,
|
|
|
|
|
|
width: `${size.width}px`,
|
|
|
|
|
|
height: `${size.height}px`
|
|
|
|
|
|
}"
|
|
|
|
|
|
@mousedown="startDrag"
|
|
|
|
|
|
>
|
|
|
|
|
|
<!-- 元素内容区 -->
|
|
|
|
|
|
<div class="element-content">
|
|
|
|
|
|
<slot>可拖拽调整的元素</slot>
|
|
|
|
|
|
</div>
|
|
|
|
|
|
<!-- 右下角调整大小的控制点 -->
|
|
|
|
|
|
<div class="resize-handle" @mousedown="startResize"></div>
|
|
|
|
|
|
</div>
|
|
|
|
|
|
</div>
|
|
|
|
|
|
</template>
|
|
|
|
|
|
|
|
|
|
|
|
<script>
|
|
|
|
|
|
export default {
|
|
|
|
|
|
name: 'DragResizeBox',
|
|
|
|
|
|
props: {
|
|
|
|
|
|
// 初始位置
|
|
|
|
|
|
initPosition: {
|
|
|
|
|
|
type: Object,
|
|
|
|
|
|
default: () => ({ x: 100, y: 100 })
|
|
|
|
|
|
},
|
|
|
|
|
|
// 初始尺寸
|
|
|
|
|
|
initSize: {
|
|
|
|
|
|
type: Object,
|
|
|
|
|
|
default: () => ({ width: 200, height: 150 })
|
|
|
|
|
|
},
|
|
|
|
|
|
// 移除容器尺寸限制(保留prop但默认值改为屏幕尺寸)
|
|
|
|
|
|
containerSize: {
|
|
|
|
|
|
type: Object,
|
|
|
|
|
|
default: () => ({
|
|
|
|
|
|
width: window.innerWidth,
|
|
|
|
|
|
height: window.innerHeight
|
|
|
|
|
|
})
|
|
|
|
|
|
},
|
|
|
|
|
|
// 元素最小尺寸
|
|
|
|
|
|
minSize: {
|
|
|
|
|
|
type: Object,
|
|
|
|
|
|
default: () => ({ width: 100, height: 80 })
|
2026-03-12 10:41:19 +08:00
|
|
|
|
},
|
|
|
|
|
|
// 用于localStorage存储的唯一标识
|
|
|
|
|
|
storageKey: {
|
|
|
|
|
|
type: String,
|
|
|
|
|
|
default: ''
|
2026-03-11 10:47:49 +08:00
|
|
|
|
}
|
|
|
|
|
|
},
|
|
|
|
|
|
data() {
|
|
|
|
|
|
return {
|
|
|
|
|
|
// 当前位置
|
|
|
|
|
|
position: { x: 0, y: 0 },
|
|
|
|
|
|
// 当前尺寸
|
|
|
|
|
|
size: { width: 0, height: 0 },
|
|
|
|
|
|
// 拖拽状态
|
|
|
|
|
|
isDragging: false,
|
|
|
|
|
|
// 调整大小状态
|
|
|
|
|
|
isResizing: false,
|
|
|
|
|
|
// 鼠标初始位置
|
|
|
|
|
|
startMouse: { x: 0, y: 0 },
|
|
|
|
|
|
// 元素初始状态
|
|
|
|
|
|
startState: { x: 0, y: 0, width: 0, height: 0 }
|
|
|
|
|
|
};
|
|
|
|
|
|
},
|
|
|
|
|
|
mounted() {
|
2026-03-12 10:41:19 +08:00
|
|
|
|
// 初始化位置和尺寸(优先从localStorage读取)
|
|
|
|
|
|
this.initFromStorage();
|
2026-03-11 10:47:49 +08:00
|
|
|
|
// 监听全局鼠标移动和松开事件
|
|
|
|
|
|
document.addEventListener('mousemove', this.handleMouseMove);
|
|
|
|
|
|
document.addEventListener('mouseup', this.handleMouseUp);
|
|
|
|
|
|
// 监听窗口大小变化,更新屏幕尺寸
|
|
|
|
|
|
window.addEventListener('resize', this.updateScreenSize);
|
|
|
|
|
|
},
|
|
|
|
|
|
beforeDestroy() {
|
|
|
|
|
|
// 移除全局事件监听,防止内存泄漏
|
|
|
|
|
|
document.removeEventListener('mousemove', this.handleMouseMove);
|
|
|
|
|
|
document.removeEventListener('mouseup', this.handleMouseUp);
|
|
|
|
|
|
window.removeEventListener('resize', this.updateScreenSize);
|
|
|
|
|
|
},
|
|
|
|
|
|
methods: {
|
2026-03-12 10:41:19 +08:00
|
|
|
|
/**
|
|
|
|
|
|
* 从localStorage初始化位置和尺寸
|
|
|
|
|
|
* 有key时优先读取存储值,无则使用props传入的初始值
|
|
|
|
|
|
*/
|
|
|
|
|
|
initFromStorage() {
|
|
|
|
|
|
if (this.storageKey) {
|
|
|
|
|
|
try {
|
|
|
|
|
|
const storageKey = `dnd-ps-${this.storageKey}`;
|
|
|
|
|
|
const storedData = localStorage.getItem(storageKey);
|
|
|
|
|
|
|
|
|
|
|
|
if (storedData) {
|
|
|
|
|
|
const { position, size } = JSON.parse(storedData);
|
|
|
|
|
|
// 验证存储的数据是否合法,防止异常值
|
|
|
|
|
|
const isValidPosition = position && typeof position.x === 'number' && typeof position.y === 'number';
|
|
|
|
|
|
const isValidSize = size && typeof size.width === 'number' && typeof size.height === 'number';
|
|
|
|
|
|
|
|
|
|
|
|
if (isValidPosition && isValidSize) {
|
|
|
|
|
|
// 使用存储的位置和尺寸(确保不小于最小尺寸)
|
|
|
|
|
|
this.position = {
|
|
|
|
|
|
x: Math.max(0, position.x),
|
|
|
|
|
|
y: Math.max(0, position.y)
|
|
|
|
|
|
};
|
|
|
|
|
|
this.size = {
|
|
|
|
|
|
width: Math.max(this.minSize.width, size.width),
|
|
|
|
|
|
height: Math.max(this.minSize.height, size.height)
|
|
|
|
|
|
};
|
|
|
|
|
|
return;
|
|
|
|
|
|
}
|
|
|
|
|
|
}
|
|
|
|
|
|
} catch (error) {
|
|
|
|
|
|
console.warn('读取拖拽元素存储数据失败,使用默认值:', error);
|
|
|
|
|
|
}
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
// 无存储数据或存储异常时,使用props初始值
|
|
|
|
|
|
this.position = { ...this.initPosition };
|
|
|
|
|
|
this.size = { ...this.initSize };
|
|
|
|
|
|
},
|
|
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
|
* 将当前位置和尺寸保存到localStorage
|
|
|
|
|
|
*/
|
|
|
|
|
|
saveToStorage() {
|
|
|
|
|
|
if (this.storageKey) {
|
|
|
|
|
|
try {
|
|
|
|
|
|
const storageKey = `dnd-ps-${this.storageKey}`;
|
|
|
|
|
|
const saveData = {
|
|
|
|
|
|
position: { ...this.position },
|
|
|
|
|
|
size: { ...this.size },
|
|
|
|
|
|
updateTime: new Date().getTime()
|
|
|
|
|
|
};
|
|
|
|
|
|
console.log('saveData', saveData);
|
|
|
|
|
|
localStorage.setItem(storageKey, JSON.stringify(saveData));
|
|
|
|
|
|
// 触发存储成功事件
|
|
|
|
|
|
this.$emit('save-success', saveData);
|
|
|
|
|
|
} catch (error) {
|
|
|
|
|
|
console.error('保存拖拽元素数据失败:', error);
|
|
|
|
|
|
this.$emit('save-fail', error);
|
|
|
|
|
|
}
|
|
|
|
|
|
}
|
|
|
|
|
|
},
|
|
|
|
|
|
|
2026-03-11 10:47:49 +08:00
|
|
|
|
/**
|
|
|
|
|
|
* 更新屏幕尺寸(窗口大小变化时)
|
|
|
|
|
|
*/
|
|
|
|
|
|
updateScreenSize() {
|
|
|
|
|
|
this.containerSize = {
|
|
|
|
|
|
width: window.innerWidth,
|
|
|
|
|
|
height: window.innerHeight
|
|
|
|
|
|
};
|
|
|
|
|
|
},
|
|
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
|
* 开始拖拽(移动位置)
|
|
|
|
|
|
*/
|
|
|
|
|
|
startDrag(e) {
|
|
|
|
|
|
// 阻止事件冒泡,避免和调整大小冲突
|
|
|
|
|
|
if (e.target.classList.contains('resize-handle')) return;
|
|
|
|
|
|
|
|
|
|
|
|
this.isDragging = true;
|
|
|
|
|
|
// 记录鼠标初始位置
|
|
|
|
|
|
this.startMouse = { x: e.clientX, y: e.clientY };
|
|
|
|
|
|
// 记录元素初始位置
|
|
|
|
|
|
this.startState = {
|
|
|
|
|
|
x: this.position.x,
|
|
|
|
|
|
y: this.position.y,
|
|
|
|
|
|
width: this.size.width,
|
|
|
|
|
|
height: this.size.height
|
|
|
|
|
|
};
|
|
|
|
|
|
// 更改鼠标样式
|
|
|
|
|
|
document.body.style.cursor = 'move';
|
|
|
|
|
|
},
|
|
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
|
* 开始调整大小
|
|
|
|
|
|
*/
|
|
|
|
|
|
startResize(e) {
|
|
|
|
|
|
e.stopPropagation(); // 阻止事件冒泡
|
|
|
|
|
|
this.isResizing = true;
|
|
|
|
|
|
// 记录鼠标初始位置
|
|
|
|
|
|
this.startMouse = { x: e.clientX, y: e.clientY };
|
|
|
|
|
|
// 记录元素初始尺寸
|
|
|
|
|
|
this.startState = {
|
|
|
|
|
|
x: this.position.x,
|
|
|
|
|
|
y: this.position.y,
|
|
|
|
|
|
width: this.size.width,
|
|
|
|
|
|
height: this.size.height
|
|
|
|
|
|
};
|
|
|
|
|
|
// 更改鼠标样式
|
|
|
|
|
|
document.body.style.cursor = 'se-resize';
|
|
|
|
|
|
},
|
|
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
|
* 处理鼠标移动
|
|
|
|
|
|
*/
|
|
|
|
|
|
handleMouseMove(e) {
|
|
|
|
|
|
if (this.isDragging) {
|
|
|
|
|
|
// 计算鼠标移动的偏移量
|
|
|
|
|
|
const dx = e.clientX - this.startMouse.x;
|
|
|
|
|
|
const dy = e.clientY - this.startMouse.y;
|
|
|
|
|
|
|
|
|
|
|
|
// 核心修改:移除容器边界限制,仅限制不超出屏幕左侧/顶部(右侧/底部可任意移动)
|
|
|
|
|
|
this.position.x = Math.max(0, this.startState.x + dx);
|
|
|
|
|
|
this.position.y = Math.max(0, this.startState.y + dy);
|
|
|
|
|
|
|
|
|
|
|
|
// 触发位置变化事件
|
|
|
|
|
|
this.$emit('position-change', { ...this.position });
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
if (this.isResizing) {
|
|
|
|
|
|
// 计算鼠标移动的偏移量
|
|
|
|
|
|
const dx = e.clientX - this.startMouse.x;
|
|
|
|
|
|
const dy = e.clientY - this.startMouse.y;
|
|
|
|
|
|
|
|
|
|
|
|
// 调整大小仅限制最小尺寸,不限制屏幕边界
|
|
|
|
|
|
this.size.width = Math.max(this.minSize.width, this.startState.width + dx);
|
|
|
|
|
|
this.size.height = Math.max(this.minSize.height, this.startState.height + dy);
|
|
|
|
|
|
|
|
|
|
|
|
// 触发尺寸变化事件
|
|
|
|
|
|
this.$emit('size-change', { ...this.size });
|
|
|
|
|
|
}
|
|
|
|
|
|
},
|
|
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
|
* 处理鼠标松开
|
|
|
|
|
|
*/
|
|
|
|
|
|
handleMouseUp() {
|
|
|
|
|
|
// 重置状态
|
|
|
|
|
|
this.isDragging = false;
|
|
|
|
|
|
this.isResizing = false;
|
|
|
|
|
|
// 恢复鼠标样式
|
|
|
|
|
|
document.body.style.cursor = 'default';
|
|
|
|
|
|
|
2026-03-12 10:41:19 +08:00
|
|
|
|
// 保存当前状态到localStorage(有key时)
|
|
|
|
|
|
this.saveToStorage();
|
|
|
|
|
|
|
2026-03-11 10:47:49 +08:00
|
|
|
|
// 触发结束事件
|
|
|
|
|
|
this.$emit('drag-end', { position: { ...this.position }, size: { ...this.size } });
|
|
|
|
|
|
}
|
|
|
|
|
|
}
|
|
|
|
|
|
};
|
|
|
|
|
|
</script>
|
|
|
|
|
|
|
|
|
|
|
|
<style scoped>
|
|
|
|
|
|
/* 容器样式:改为全屏且无视觉样式 */
|
|
|
|
|
|
.drag-resize-container {
|
|
|
|
|
|
position: fixed; /* 固定定位覆盖整个屏幕 */
|
|
|
|
|
|
top: 0;
|
|
|
|
|
|
left: 0;
|
|
|
|
|
|
width: 100vw;
|
|
|
|
|
|
height: 100vh;
|
|
|
|
|
|
pointer-events: none; /* 容器不拦截鼠标事件,不影响页面其他元素 */
|
|
|
|
|
|
box-sizing: border-box;
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
/* 可拖拽元素样式:fixed定位确保基于屏幕移动 */
|
|
|
|
|
|
.draggable-element {
|
|
|
|
|
|
position: fixed;
|
|
|
|
|
|
border-radius: 4px;
|
|
|
|
|
|
box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
|
|
|
|
|
|
user-select: none; /* 禁止文本选中 */
|
|
|
|
|
|
box-sizing: border-box;
|
|
|
|
|
|
overflow: hidden;
|
|
|
|
|
|
pointer-events: auto; /* 元素本身响应鼠标事件 */
|
|
|
|
|
|
z-index: 9999; /* 确保元素在最上层 */
|
2026-03-12 10:41:19 +08:00
|
|
|
|
background-color: #ffffff; /* 添加背景色,提升可视性 */
|
2026-03-11 10:47:49 +08:00
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
/* 元素内容区 */
|
|
|
|
|
|
.element-content {
|
|
|
|
|
|
height: calc(100% - 20px);
|
|
|
|
|
|
padding: 10px;
|
|
|
|
|
|
cursor: move;
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
/* 调整大小控制点 */
|
|
|
|
|
|
.resize-handle {
|
|
|
|
|
|
position: absolute;
|
|
|
|
|
|
right: 0;
|
|
|
|
|
|
bottom: 0;
|
|
|
|
|
|
width: 20px;
|
|
|
|
|
|
height: 20px;
|
|
|
|
|
|
background-color: #1e88e5;
|
|
|
|
|
|
cursor: se-resize;
|
|
|
|
|
|
border-top-left-radius: 4px;
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
/* 控制点hover效果 */
|
|
|
|
|
|
.resize-handle:hover {
|
|
|
|
|
|
background-color: #1976d2;
|
|
|
|
|
|
}
|
|
|
|
|
|
</style>
|