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<template> <view class="u-mask" hover-stop-propagation :style="[maskStyle, zoomStyle]" @tap="click" @touchmove.stop.prevent="() => {}" :class="{ 'u-mask-zoom': zoom, 'u-mask-show': show }"> <slot /> </view> </template>
<script> /** * mask 遮罩 * @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 * @tutorial https://www.uviewui.com/components/mask.html
* @property {Boolean} show 是否显示遮罩(默认false) * @property {String Number} z-index z-index 层级(默认1070) * @property {Object} custom-style 自定义样式对象,见上方说明 * @property {String Number} duration 动画时长,单位毫秒(默认300) * @property {Boolean} zoom 是否使用scale对遮罩进行缩放(默认true) * @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) * @event {Function} click mask-click-able为true时,点击遮罩发送此事件 * @example <u-mask :show="show" @click="show = false"></u-mask> */ export default { name: "u-mask", props: { // 是否显示遮罩
show: { type: Boolean, default: false }, // 层级z-index
zIndex: { type: [Number, String], default: '' }, // 用户自定义样式
customStyle: { type: Object, default () { return {} } }, // 遮罩的动画样式, 是否使用使用zoom进行scale进行缩放
zoom: { type: Boolean, default: true }, // 遮罩的过渡时间,单位为ms
duration: { type: [Number, String], default: 300 }, // 是否可以通过点击遮罩进行关闭
maskClickAble: { type: Boolean, default: true } }, data() { return { zoomStyle: { transform: '' }, scale: 'scale(1.2, 1.2)' } }, watch: { show(n) { if(n && this.zoom) { // 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
this.zoomStyle.transform = 'scale(1, 1)'; } else if(!n && this.zoom) { // 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
this.zoomStyle.transform = this.scale; } } }, computed: { maskStyle() { let style = {}; style.backgroundColor = "rgba(0, 0, 0, 0.6)"; if(this.show) style.zIndex = this.zIndex ? this.zIndex : this.$u.zIndex.mask; else style.zIndex = -1; style.transition = `all ${this.duration / 1000}s ease-in-out`; // 判断用户传递的对象是否为空,不为空就进行合并
if (Object.keys(this.customStyle).length) style = { ...style, ...this.customStyle }; return style; } }, methods: { click() { if (!this.maskClickAble) return; this.$emit('click'); } } } </script>
<style lang="scss" scoped> @import "../../libs/css/style.components.scss"; .u-mask { position: fixed; top: 0; left: 0; right: 0; bottom: 0; opacity: 0; transition: transform 0.3s; }
.u-mask-show { opacity: 1; } .u-mask-zoom { transform: scale(1.2, 1.2); } </style>
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