124 lines
		
	
	
		
			3.1 KiB
		
	
	
	
		
			Vue
		
	
	
	
		
		
			
		
	
	
			124 lines
		
	
	
		
			3.1 KiB
		
	
	
	
		
			Vue
		
	
	
	
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								<template>
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									<view class="u-mask" hover-stop-propagation :style="[maskStyle, zoomStyle]" @tap="click" @touchmove.stop.prevent="() => {}" :class="{
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										'u-mask-zoom': zoom,
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										'u-mask-show': show
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									}">
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										<slot />
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									</view>
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								</template>
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								<script>
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									/**
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									 * mask 遮罩
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									 * @description 创建一个遮罩层,用于强调特定的页面元素,并阻止用户对遮罩下层的内容进行操作,一般用于弹窗场景
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									 * @tutorial https://www.uviewui.com/components/mask.html
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									 * @property {Boolean} show 是否显示遮罩(默认false)
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									 * @property {String Number} z-index z-index 层级(默认1070)
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									 * @property {Object} custom-style 自定义样式对象,见上方说明
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									 * @property {String Number} duration 动画时长,单位毫秒(默认300)
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									 * @property {Boolean} zoom 是否使用scale对遮罩进行缩放(默认true)
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									 * @property {Boolean} mask-click-able 遮罩是否可点击,为false时点击不会发送click事件(默认true)
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									 * @event {Function} click mask-click-able为true时,点击遮罩发送此事件
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									 * @example <u-mask :show="show" @click="show = false"></u-mask>
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									 */
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									export default {
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										name: "u-mask",
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										props: {
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											// 是否显示遮罩
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											show: {
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												type: Boolean,
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												default: false
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											},
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											// 层级z-index
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											zIndex: {
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												type: [Number, String],
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												default: ''
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											},
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											// 用户自定义样式
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											customStyle: {
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												type: Object,
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												default () {
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													return {}
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												}
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											},
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											// 遮罩的动画样式, 是否使用使用zoom进行scale进行缩放
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											zoom: {
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												type: Boolean,
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												default: true
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											},
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											// 遮罩的过渡时间,单位为ms
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											duration: {
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												type: [Number, String],
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												default: 300
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											},
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											// 是否可以通过点击遮罩进行关闭
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											maskClickAble: {
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												type: Boolean,
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												default: true
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											}
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										},
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										data() {
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											return {
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												zoomStyle: {
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													transform: ''
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												},
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												scale: 'scale(1.2, 1.2)'
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											}
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										},
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										watch: {
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											show(n) {
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												if(n && this.zoom) {
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													// 当展示遮罩的时候,设置scale为1,达到缩小(原来为1.2)的效果
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													this.zoomStyle.transform = 'scale(1, 1)';
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												} else if(!n && this.zoom) {
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													// 当隐藏遮罩的时候,设置scale为1.2,达到放大(因为显示遮罩时已重置为1)的效果
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													this.zoomStyle.transform = this.scale;
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												}
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											}
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										},
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										computed: {
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											maskStyle() {
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												let style = {};
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												style.backgroundColor = "rgba(0, 0, 0, 0.6)";
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												if(this.show) style.zIndex = this.zIndex ? this.zIndex : this.$u.zIndex.mask;
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												else style.zIndex = -1;
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												style.transition = `all ${this.duration / 1000}s ease-in-out`;
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												// 判断用户传递的对象是否为空,不为空就进行合并
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												if (Object.keys(this.customStyle).length) style = { 
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													...style,
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													...this.customStyle
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												};
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												return style;
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											}
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										},
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										methods: {
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											click() {
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												if (!this.maskClickAble) return;
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												this.$emit('click');
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											}
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										}
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									}
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								</script>
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								<style lang="scss" scoped>
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									@import "../../libs/css/style.components.scss";
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									.u-mask {
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										position: fixed;
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										top: 0;
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										left: 0;
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										right: 0;
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										bottom: 0;
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										opacity: 0;
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										transition: transform 0.3s;
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									}
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									.u-mask-show {
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										opacity: 1;
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									}
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									.u-mask-zoom {
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										transform: scale(1.2, 1.2);
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									}
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								</style>
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