vant-weapp/packages/stepper/index.less

@import '../common/style/var.less';
@import '../common/style/theme.less';

.van-stepper {
  font-size: 0;

  &__minus,
  &__plus {
    position: relative;
    display: inline-block;
    box-sizing: border-box;
    margin: 1px;
    vertical-align: middle;
    border: 0;
    .theme(background-color, '@stepper-background-color');
    .theme(color, '@stepper-button-icon-color');
    .theme(width, '@stepper-input-height');
    .theme(height, '@stepper-input-height');
    .theme(padding, '@padding-base');

    &::before {
      width: 9px;
      height: 1px;
    }

    &::after {
      width: 1px;
      height: 9px;
    }

    &:empty&::before,
    &:empty&::after {
      position: absolute;
      top: 0;
      right: 0;
      bottom: 0;
      left: 0;
      margin: auto;
      background-color: currentColor;
      content: '';
    }

    &--hover {
      .theme(background-color, '@stepper-active-color');
    }

    &--disabled {
      .theme(color, '@stepper-button-disabled-icon-color');
      .theme(background-color, '@stepper-button-disabled-color');
    }

    &--disabled&--hover {
      .theme(background-color, '@stepper-button-disabled-color');
    }
  }

  &__minus {
    .theme(border-radius, '@stepper-border-radius 0 0 @stepper-border-radius');

    &::after {
      display: none;
    }
  }

  &__plus {
    .theme(border-radius, '0 @stepper-border-radius @stepper-border-radius 0');
  }

  &--round {
    .van-stepper__input {
      background-color: transparent !important;
    }

    .van-stepper__plus,
    .van-stepper__minus {
      border-radius: 100%;

      &:active {
        opacity: @active-opacity;
      }

      &--disabled {
        &,
        &:active {
          opacity: 0.3;
        }
      }
    }

    .van-stepper__plus {
      color: @white;
      background-color: @stepper-button-round-theme-color;
    }

    .van-stepper__minus {
      color: @stepper-button-round-theme-color;
      background-color: @white;
      border: 1px solid @stepper-button-round-theme-color;
    }
  }

  &__input {
    display: inline-block;
    box-sizing: border-box;
    // 覆盖 common style 中 input 的 min-height: 1.4rem;
    // 避免 button-size 对 input 设置的 height 不生效
    min-height: 0;
    margin: 1px;
    padding: 1px;
    font-size: 14px;
    text-align: center;
    vertical-align: middle;
    border: 0;
    border-width: 1px 0;
    border-radius: 0;
    -webkit-appearance: none;
    .theme(font-size, '@stepper-input-font-size');
    .theme(color, '@stepper-input-text-color');
    .theme(background-color, '@stepper-background-color');
    .theme(width, '@stepper-input-width');
    .theme(height, '@stepper-input-height');

    &--disabled {
      .theme(color, '@stepper-input-disabled-text-color');
      .theme(background-color, '@stepper-input-disabled-background-color');
    }
  }
}