vxe-table/styles/base/checked.scss

// 单选框和复选框
%RadioAndCheckboxSpan {
  position: relative;
  user-select: none;
  cursor: pointer;
}
%RadioAndCheckboxIcon {
  display: none;
  position: absolute;
  height: 1em;
  width: 1em;
}

%XERadio {
  @extend %RadioAndCheckboxSpan;
  .vxe-radio--icon {
    @extend %RadioAndCheckboxIcon;
    font-size: $vxe-radio-font-size-default;
    &:before {
      content: "";
      position: absolute;
      height: 1em;
      width: 1em;
      top: 0;
      left: 0;
      border: $vxe-radio-border-width solid $vxe-input-border-color;
      background-color: $vxe-radio-icon-background-color;
      border-radius: 50%;
    }
  }
  .vxe-radio--unchecked-icon {
    display: inline-block;
  }
  .vxe-radio--checked-icon {
    &:after {
      content: "";
      position: absolute;
      height: 0.25em;
      width: 0.25em;
      top: 0.4em;
      left: 0.4em;
      border-radius: 50%;
      background-color: $vxe-radio-checked-icon-background-color;
    }
  }
  &.is--checked {
    color: $vxe-primary-color;
    .vxe-radio--unchecked-icon {
      display: none;
    }
    .vxe-radio--checked-icon {
      display: inline-block;
      &:before {
        border-color: $vxe-primary-color;
        background-color: $vxe-primary-color;
      }
    }
  }
  &:not(.is--disabled) {
    &:hover {
      .vxe-radio--icon {
        &:before {
          border-color: $vxe-primary-color;
        }
      }
    }
  }
  &.is--disabled {
    cursor: not-allowed;
    color: $vxe-disabled-color;
    .vxe-radio--icon {
      &:before {
        border-color: $vxe-input-disabled-color;
        background-color: $vxe-input-disabled-background-color;
      }
      &:after {
        background-color: $vxe-primary-disabled-color;
      }
    }
  }
}

%XECheckbox {
  @extend %RadioAndCheckboxSpan;
  .vxe-checkbox--icon {
    @extend %RadioAndCheckboxIcon;
    font-size: $vxe-checkbox-font-size-default;
    &:before {
      content: "";
      position: absolute;
      height: 1em;
      width: 1em;
      top: 0;
      left: 0;
      background-color: $vxe-checkbox-icon-background-color;
      border-radius: $vxe-checkbox-border-radius;
      border: $vxe-checkbox-border-width solid $vxe-input-border-color;
    }
  }
  .vxe-checkbox--unchecked-icon {
    display: inline-block;
  }
  .vxe-checkbox--checked-icon {
    &:after {
      content: "";
      position: absolute;
      height: $vxe-checkbox-checked-height;
      width: $vxe-checkbox-checked-width;
      top: 50%;
      left: 50%;
      border: $vxe-checkbox-border-width solid $vxe-checkbox-checked-icon-border-color;
      border-left: 0;
      border-top: 0;
      transform: translate(-50%, -50%) rotate(45deg);
    }
  }
  .vxe-checkbox--indeterminate-icon {
    &:after {
      content: "";
      position: absolute;
      top: 50%;
      left: 50%;
      height: $vxe-checkbox-indeterminate-height;
      width: $vxe-checkbox-indeterminate-width;
      background-color: $vxe-checkbox-indeterminate-icon-background-color;
      transform: translate(-50%, -50%);
    }
  }
  &.is--checked,
  &.is--indeterminate {
    color: $vxe-primary-color;
    .vxe-checkbox--unchecked-icon {
      display: none;
    }
    .vxe-checkbox--icon {
      &:before {
        border-color: $vxe-primary-color;
        background-color: $vxe-primary-color;
      }
    }
  }
  &.is--checked {
    .vxe-checkbox--checked-icon {
      display: inline-block;
    }
  }
  &.is--indeterminate {
    .vxe-checkbox--indeterminate-icon {
      display: inline-block;
    }
  }
  &:not(.is--disabled) {
    &:hover {
      .vxe-checkbox--icon {
        &:before {
          border-color: $vxe-primary-color;
        }
      }
    }
  }
  &.is--disabled {
    cursor: not-allowed;
    color: $vxe-disabled-color;
    .vxe-checkbox--icon {
      &:before {
        border-color: $vxe-input-disabled-color;
        background-color: $vxe-input-disabled-background-color;
      }
      &:after {
        border-color: $vxe-primary-disabled-color;
      }
    }
  }
}