| <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> |