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4.0 KiB
Vue

<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>