guangchao.xu | 070005a | 2020-12-07 09:56:40 +0800 | [diff] [blame^] | 1 | <template> |
| 2 | <view class="u-mask" hover-stop-propagation :style="[maskStyle, zoomStyle]" @tap="click" @touchmove.stop.prevent="() => {}" :class="{ |
| 3 | 'u-mask-zoom': zoom, |
| 4 | 'u-mask-show': show |
| 5 | }"> |
| 6 | <slot /> |
| 7 | </view> |
| 8 | </template> |
| 9 | |
| 10 | <script> |
| 11 | /** |
| 12 | * mask 遮罩 |
| 13 | * @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 |
| 14 | * @tutorial https://www.uviewui.com/components/mask.html |
| 15 | * @property {Boolean} show 是否显示遮罩(默认false) |
| 16 | * @property {String Number} z-index z-index 层级(默认1070) |
| 17 | * @property {Object} custom-style 自定义样式对象,见上方说明 |
| 18 | * @property {String Number} duration 动画时长,单位毫秒(默认300) |
| 19 | * @property {Boolean} zoom 是否使用scale对这招进行缩放(默认true) |
| 20 | * @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) |
| 21 | * @event {Function} click mask-click-able为true时,点击遮罩发送此事件 |
| 22 | * @example <u-mask :show="show" @click="show = false"></u-mask> |
| 23 | */ |
| 24 | export default { |
| 25 | name: "u-mask", |
| 26 | props: { |
| 27 | // 是否显示遮罩 |
| 28 | show: { |
| 29 | type: Boolean, |
| 30 | default: false |
| 31 | }, |
| 32 | // 层级z-index |
| 33 | zIndex: { |
| 34 | type: [Number, String], |
| 35 | default: '' |
| 36 | }, |
| 37 | // 用户自定义样式 |
| 38 | customStyle: { |
| 39 | type: Object, |
| 40 | default () { |
| 41 | return {} |
| 42 | } |
| 43 | }, |
| 44 | // 遮罩的动画样式, 是否使用使用zoom进行scale进行缩放 |
| 45 | zoom: { |
| 46 | type: Boolean, |
| 47 | default: true |
| 48 | }, |
| 49 | // 遮罩的过渡时间,单位为ms |
| 50 | duration: { |
| 51 | type: [Number, String], |
| 52 | default: 300 |
| 53 | }, |
| 54 | // 是否可以通过点击遮罩进行关闭 |
| 55 | maskClickAble: { |
| 56 | type: Boolean, |
| 57 | default: true |
| 58 | } |
| 59 | }, |
| 60 | data() { |
| 61 | return { |
| 62 | zoomStyle: { |
| 63 | transform: '' |
| 64 | }, |
| 65 | scale: 'scale(1.2, 1.2)' |
| 66 | } |
| 67 | }, |
| 68 | watch: { |
| 69 | show(n) { |
| 70 | if(n && this.zoom) { |
| 71 | // 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 |
| 72 | this.zoomStyle.transform = 'scale(1, 1)'; |
| 73 | } else if(!n && this.zoom) { |
| 74 | // 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 |
| 75 | this.zoomStyle.transform = this.scale; |
| 76 | } |
| 77 | } |
| 78 | }, |
| 79 | computed: { |
| 80 | maskStyle() { |
| 81 | let style = {}; |
| 82 | style.backgroundColor = "rgba(0, 0, 0, 0.6)"; |
| 83 | if(this.show) style.zIndex = this.zIndex ? this.zIndex : this.$u.zIndex.mask; |
| 84 | else style.zIndex = -1; |
| 85 | style.transition = `all ${this.duration / 1000}s ease-in-out`; |
| 86 | // 判断用户传递的对象是否为空,不为空就进行合并 |
| 87 | if (Object.keys(this.customStyle).length) style = { |
| 88 | ...style, |
| 89 | ...this.customStyle |
| 90 | }; |
| 91 | return style; |
| 92 | } |
| 93 | }, |
| 94 | methods: { |
| 95 | click() { |
| 96 | if (!this.maskClickAble) return; |
| 97 | this.$emit('click'); |
| 98 | } |
| 99 | } |
| 100 | } |
| 101 | </script> |
| 102 | |
| 103 | <style lang="scss" scoped> |
| 104 | @import "../../libs/css/style.components.scss"; |
| 105 | |
| 106 | .u-mask { |
| 107 | position: fixed; |
| 108 | top: 0; |
| 109 | left: 0; |
| 110 | right: 0; |
| 111 | bottom: 0; |
| 112 | opacity: 0; |
| 113 | transition: transform 0.3s; |
| 114 | } |
| 115 | |
| 116 | .u-mask-show { |
| 117 | opacity: 1; |
| 118 | } |
| 119 | |
| 120 | .u-mask-zoom { |
| 121 | transform: scale(1.2, 1.2); |
| 122 | } |
| 123 | </style> |