w-ui/packages/picker/src/picker.less

A Vue.js 2.0 UI Toolkit for mobile

@line-color: #D9D9D9;

.top-line(@color, @zindex: 0) {
  content: '';
  position: absolute;
  z-index: @zindex;
  top: 0;
  left: 0;
  width: 100%;
  border-top: 1px solid @color;
  -webkit-transform: scaleY(.5);
  transform: scaleY(.5);
  -webkit-transform-origin: 0 0;
  transform-origin: 0 0;
}

.bottom-line(@color, @zindex: 0) {
  content: '';
  position: absolute;
  z-index: @zindex;
  bottom: 0;
  left: 0;
  width: 100%;
  border-bottom: 1px solid @color;
  -webkit-transform: scaleY(.5);
  transform: scaleY(.5);
  -webkit-transform-origin: 0 0;
  transform-origin: 0 0;
}

// 遮罩层
// -----------------------------------------------------------------------------
.mask(@bgcolor: rgba(0, 0, 0, .4), @z-index: @base-zindex * 1500) {
  background-color: @bgcolor;
  position: fixed;
  z-index: @z-index;
  bottom: 0;
  right: 0;
  left: 0;
  top: 0;
  display: -webkit-box;
  display: -webkit-flex;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-pack: center;
  -webkit-justify-content: center;
  -ms-flex-pack: center;
  justify-content: center;
  -webkit-box-align: center;
  -webkit-align-items: center;
  -ms-flex-align: center;
  align-items: center;
}

@picker-item-height: 38px;

.wui {
  &-picker-mask {
    .mask(rgba(0, 0, 0, .4), 1500 + 2);
  }

  &-picker {
    position: fixed;
    bottom: 0;
    left: 0;
    width: 100%;
    z-index: 1500 + 2;
    background-color: #FFF;
    transform: translate(0, 100%);
    transition: transform .25s;
    touch-action: none;
    &-active {
      transform: translate(0, 0);
    }
  }

  &-picker-input {
    width: 100%;
    height: 0.6rem;
    line-height: 0.6rem;
  }

  &-picker-head {
    display: flex;
    justify-content: space-between;
    position: relative;
    background-color: #FBFBFB;
    &:after {
      .bottom-line(@line-color);
    }
    > a {
      height: 43px;
      padding: 0 30px;
      font-size: 15px;
      display: flex;
      align-items: center;
      color: #555;
    }
    > a:last-child {
      color: dodgerblue;
    }
  }

  &-picker-content {
    position: relative;
    width: 100%;
    height: @picker-item-height * 7;
    overflow: hidden;
    display: flex;
  }

  &-picker-item {
    font-size: 16px;
    height: 100%;
    position: relative;
    flex: 1;
  }

  &-picker-item-content {
    > span {
      width: 100%;
      display: block;
      height: @picker-item-height;
      line-height: @picker-item-height;
      text-align: center;
    }
  }

  &-picker-item-box {
    height: 100%;
  }

  &-picker-shade,
  &-picker-indicator {
    pointer-events: none;
    position: absolute;
    left: 0;
    top: 0;
    height: 100%;
    width: 100%;
  }

  &-picker-shade {
    z-index: 3;
    transform: translateZ(0px);
    background-image: linear-gradient(to bottom, rgba(255, 255, 255, 0.95), rgba(255, 255, 255, 0.6)), linear-gradient(to top, rgba(255, 255, 255, 0.95), rgba(255, 255, 255, 0.6));
    background-position: top, bottom;
    background-size: 100% @picker-item-height * 3;
    background-repeat: no-repeat;
  }

  &-picker-indicator {
    z-index: 4;
    display: flex;
    justify-content: center;
    flex-direction: column;
    > span {
      display: block;
      width: 100%;
      height: @picker-item-height;
      position: relative;
      &:after {
        .top-line(@line-color);
      }
      &:before {
        .bottom-line(@line-color);
      }
    }
  }
}