u-overlay.vue 1.9 KB

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  1. <template>
  2. <u-transition
  3. :show="show"
  4. custom-class="u-overlay"
  5. :duration="duration"
  6. :custom-style="overlayStyle"
  7. @click="clickHandler"
  8. >
  9. <slot />
  10. </u-transition>
  11. </template>
  12. <script>
  13. import props from './props.js';
  14. /**
  15. * overlay 遮罩
  16. * @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
  17. * @tutorial https://www.uviewui.com/components/overlay.html
  18. * @property {Boolean} show 是否显示遮罩(默认 false )
  19. * @property {String | Number} zIndex zIndex 层级(默认 10070 )
  20. * @property {String | Number} duration 动画时长,单位毫秒(默认 300 )
  21. * @property {String | Number} opacity 不透明度值,当做rgba的第四个参数 (默认 0.5 )
  22. * @property {Object} customStyle 定义需要用到的外部样式
  23. * @event {Function} click 点击遮罩发送事件
  24. * @example <u-overlay :show="show" @click="show = false"></u-overlay>
  25. */
  26. export default {
  27. name: "u-overlay",
  28. mixins: [uni.$u.mpMixin, uni.$u.mixin,props],
  29. computed: {
  30. overlayStyle() {
  31. const style = {
  32. position: 'fixed',
  33. top: 0,
  34. left: 0,
  35. right: 0,
  36. zIndex: this.zIndex,
  37. bottom: 0,
  38. 'background-color': `rgba(0, 0, 0, ${this.opacity})`
  39. }
  40. return uni.$u.deepMerge(style, uni.$u.addStyle(this.customStyle))
  41. }
  42. },
  43. methods: {
  44. clickHandler() {
  45. this.$emit('click')
  46. }
  47. }
  48. }
  49. </script>
  50. <style lang="scss" scoped>
  51. @import "../../libs/css/components.scss";
  52. $u-overlay-top:0 !default;
  53. $u-overlay-left:0 !default;
  54. $u-overlay-width:100% !default;
  55. $u-overlay-height:100% !default;
  56. $u-overlay-background-color:rgba(0, 0, 0, .7) !default;
  57. .u-overlay {
  58. position: fixed;
  59. top:$u-overlay-top;
  60. left:$u-overlay-left;
  61. width: $u-overlay-width;
  62. height:$u-overlay-height;
  63. background-color:$u-overlay-background-color;
  64. }
  65. </style>