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123 lines
3.1 KiB
123 lines
3.1 KiB
<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 http://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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