dev #4
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@ -0,0 +1,19 @@
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import { App, Directive } from 'vue';
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import copy from './modules/copy';
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import existShow from './modules/existShow';
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import vPrint from './modules/print';
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import waterMarker from './modules/waterMarker';
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const directivesList: { [key: string]: Directive } = { copy, waterMarker, existShow, vPrint };
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/**
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* 挂载自定义事件
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*/
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const directives = {
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install: function (app: App<Element>) {
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Object.keys(directivesList).forEach(key => {
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app.directive(key, directivesList[key]);
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});
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},
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};
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export default directives;
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@ -0,0 +1,51 @@
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import type { DirectiveBinding } from 'vue';
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import { Directive } from 'vue';
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interface ElType extends HTMLElement {
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copyData: string | number; // 定义一个属性,用于存储需要复制的数据
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__handleClick__: any; // 定义一个属性,用于存储事件处理函数
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}
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/**
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* * v-copy
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* 复制某个值至剪贴板
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* 接收参数:string类型/Ref<string>类型/Reactive<string>类型
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*/
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const copy: Directive = {
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mounted(el: ElType, binding: DirectiveBinding) {
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el.copyData = binding.value;
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el.addEventListener('click', handelClick);
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},
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// 指令所在组件VNode 更新时触发
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updated(el: ElType, binding: DirectiveBinding) {
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el.copyData = binding.value; // 更新需要复制的数据
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},
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// 指令与元素绑定时触发
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beforeMount(el: ElType) {
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// 移除点击事件
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el.removeEventListener('click', el.__handleClick__);
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},
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};
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/**
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* * 点击事件
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* @param this 当前作用域
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*/
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function handelClick(this: any) {
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// 创建一个 input 元素
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const input = document.createElement('input');
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// 将需要复制的数据赋值给 input 的 value 属性
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input.value = this.copyData.toLocaleString();
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// 将 input 元素添加到 body 中
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document.body.appendChild(input);
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// 选中 input 元素中的文本
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input.select();
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// 执行复制操作
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document.execCommand('Copy');
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// 将 input 元素从 body 中移除
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document.body.removeChild(input);
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// TODO: 如需自定义请修改提示方式
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alert('复制成功');
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}
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export default copy;
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@ -0,0 +1,66 @@
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import type { Directive } from 'vue';
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interface ELType extends HTMLElement {
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parentNode: any;
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}
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/*
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需求:实现一个拖拽指令,可在父元素区域任意拖拽元素。
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思路:
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1、设置需要拖拽的元素为absolute,其父元素为relative。
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2、鼠标按下(onmousedown)时记录目标元素当前的 left 和 top 值。
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3、鼠标移动(onmousemove)时计算每次移动的横向距离和纵向距离的变化值,并改变元素的 left 和 top 值
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4、鼠标松开(onmouseup)时完成一次拖拽
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使用:在 Dom 上加上 v-draggable 即可
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<div class="dialog-model" v-draggable></div>
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*/
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const draggable: Directive = {
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mounted(el: ELType) {
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// 将光标设置为“move”,将位置设置为“absolute”
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el.style.cursor = 'move';
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el.style.position = 'absolute';
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// 当元素被点击时
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el.onmousedown = function (e) {
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// 计算鼠标点击位置与元素左上角之间的距离
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let disX = e.pageX - el.offsetLeft;
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let disY = e.pageY - el.offsetTop;
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// 当鼠标移动时
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document.onmousemove = function (e) {
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// 计算元素的新位置
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let x = e.pageX - disX;
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let y = e.pageY - disY;
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// 计算元素可以移动到的最大位置
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let maxX = el.parentNode.offsetWidth - el.offsetWidth;
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let maxY = el.parentNode.offsetHeight - el.offsetHeight;
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// 确保元素不会超出其父元素的边界
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if (x < 0) {
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x = 0;
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} else if (x > maxX) {
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x = maxX;
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}
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if (y < 0) {
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y = 0;
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} else if (y > maxY) {
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y = maxY;
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}
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// 设置元素的新位置
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el.style.left = x + 'px';
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el.style.top = y + 'px';
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};
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// 当鼠标释放时
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document.onmouseup = function () {
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// 停止跟踪鼠标移动
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document.onmousemove = document.onmouseup = null;
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};
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};
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},
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};
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export default draggable;
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@ -0,0 +1,15 @@
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import { Directive } from 'vue';
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/**
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* * 当关闭这个页面时提示是否退出,不需要传递参数
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*/
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const existShow: Directive = {
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// 指令与元素绑定时触发
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beforeMount() {
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window.onbeforeunload = function (event) {
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(event || window.event).returnValue = '确定离开此页吗?';
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};
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},
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};
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export default existShow;
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@ -0,0 +1,23 @@
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import type { DirectiveBinding } from 'vue';
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import { Directive } from 'vue';
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interface ElType extends HTMLElement {
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copyData: string | number; // 定义一个属性,用于存储需要复制的数据
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__handleClick__: any; // 定义一个属性,用于存储事件处理函数
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}
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const vPrint: Directive = {
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mounted(el: ElType, binding: DirectiveBinding) {
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el.copyData = binding.value;
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el.addEventListener('click', handelClick);
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},
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beforeMount(el: ElType) {
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el.removeEventListener('click', el.__handleClick__);
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},
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};
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function handelClick(this: any) {
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print();
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}
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export default vPrint;
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@ -0,0 +1,46 @@
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import type { Directive, DirectiveBinding } from 'vue';
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/*
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需求:给整个页面添加背景水印。
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思路:
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1、使用 canvas 特性生成 base64 格式的图片文件,设置其字体大小,颜色等。
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2、将其设置为背景图片,从而实现页面或组件水印效果
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使用:设置水印文案,颜色,字体大小即可
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<div v-waterMarker="{text:'版权所有',textColor:'rgba(180, 180, 180, 0.4)'}"></div>
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*/
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const addWaterMarker: Directive = (str: string, parentNode: any, font: any, textColor: string) => {
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// 创建一个canvas元素
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let can: HTMLCanvasElement = document.createElement('canvas');
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// 将canvas元素添加到父元素中
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parentNode.appendChild(can);
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// 设置canvas元素的宽高
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can.width = 205;
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can.height = 140;
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// 隐藏canvas元素
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can.style.display = 'none';
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// 获取canvas元素的2d上下文
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let cans = can.getContext('2d') as CanvasRenderingContext2D;
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// 旋转canvas元素
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cans.rotate((-20 * Math.PI) / 180);
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// 设置canvas元素的字体和文字颜色
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cans.font = font || '16px Microsoft JhengHei';
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cans.fillStyle = textColor || 'rgba(180, 180, 180, 0.3)';
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// 设置canvas元素的文本对齐方式和基线
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cans.textAlign = 'left';
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cans.textBaseline = 'Middle' as CanvasTextBaseline;
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// 在canvas元素上绘制文本
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cans.fillText(str, can.width / 10, can.height / 2);
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// 将父元素的背景图片设置为canvas元素的dataURL
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parentNode.style.backgroundImage = `url("${can.toDataURL('image/png')}")`;
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};
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const waterMarker: Directive = {
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mounted(el: DirectiveBinding, binding: DirectiveBinding) {
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// 调用addWaterMarker函数,给元素添加水印
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addWaterMarker(binding.value.text, el, binding.value.font, binding.value.textColor);
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},
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};
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export default waterMarker;
|
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@ -1,3 +1,4 @@
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import directives from '@/directives';
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import { createPinia } from 'pinia';
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import { createApp } from 'vue';
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import App from './App.vue';
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@ -8,5 +9,5 @@ import router from './router';
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const pinia = createPinia();
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const app = createApp(App);
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app.use(router).use(pinia)
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app.use(router).use(pinia).use(directives);
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app.mount('#app');
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|
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@ -1,4 +1,24 @@
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<template>sdasd</template>
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<template>
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<textarea type="text" v-model="myData.inputValue" />
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<button v-copy="myData.copyValue" @click="handelClik">点击复制</button>
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<button v-vPrint>点击打印</button>
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</template>
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<script setup lang="ts"></script>
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<style scoped lang="scss"></style>
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<script setup lang="ts">
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import { reactive } from 'vue';
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const myData = reactive({
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inputValue: '我是被复制的内容 🍒🍇🍊,2023-4-21 14:02:59',
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copyValue: '',
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});
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const handelClik = () => {
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myData.copyValue = myData.inputValue;
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};
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</script>
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<style scoped lang="scss">
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textarea {
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width: 500px;
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height: 300px;
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outline: 1px solid #f4dde5;
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}
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</style>
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|
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@ -1,6 +1,15 @@
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<template>
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<h1>bunny/default页面</h1>
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<RouterView />
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<div v-waterMarker="{ text: 'Bunny Admin', textColor: 'rgba(180, 180, 180, 0.6)' }" v-existShow>
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<h1 @click="handelClik">bunny/default页面</h1>
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<My />
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<RouterView />
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</div>
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</template>
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<script setup lang="ts"></script>
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<script setup lang="ts">
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import My from '@/views/bunny/default/My.vue';
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const handelClik = () => {
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print();
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};
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</script>
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||||
|
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