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- <template>
- <view class="u-mask" :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对这招进行缩放(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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