naive-ui/styles/Button.scss

@import './mixins/mixins.scss';
@import './themes/vars.scss';

@mixin button-size-mixin($size) {
  @include m($size + "-size") {
    $height: map-get($map: $button-height, $key: $size);
    $font-size: map-get($map: $button-font-size, $key: $size);
    border-radius: $button-border-radius;
    font-size: $font-size;
    @include not-m(text) {
      height: $height;
      line-height: $height;
      padding: map-get($map: $button-padding, $key: $size);
    }
    white-space: nowrap;
    @include m(round) {
      padding: map-get($map: $round-button-padding, $key: $size);
      border-radius: $height / 2;
    }
    @include m(circle) {
      border-radius: $height / 2;
      width: $height;
      padding: 0!important;
    }
    @include e(content) {
      display: inline-block;
      line-height: inherit;
    }
    @include e(icon) {
      display: inline-block;
      position: relative;
      $icon-size: map-get($map: $button-icon-size, $key: $size);
      line-height: $height;
      height: $height;
      width: $icon-size;
      max-width: $icon-size;
      vertical-align: bottom;
      @include b(icon) {
        font-size: $icon-size;
      }
      @include b(spin) {
        height: $icon-size;
        width: $icon-size;
        position: absolute;
        left: 0;
        top: 50%;
        transform: translateY(-50%);
        display: block;
      }
      @include m(slot) {
        width: $icon-size;
        font-size: $icon-size;
        display: inline-flex;
        align-items: center;
        vertical-align: bottom;
        @include b(icon-slot) {
          display: block;
          line-height: $icon-size;
          height: $icon-size;
          width: $icon-size;
          font-size: $icon-size;
        }
      }
    }
    @include m(text) {
      padding: 0;
      font-weight: 700;
      border-radius: 0;
    }
  }
}

@mixin button-type-mixin ($type) {
  @include m($type + "-type") {
    color: map-get($map: $button-color, $key: $type);
    background-color: map-get($map: $button-background-color, $key: $type);
    box-shadow: map-get($map: $button-box-shadow, $key: $type);
    @include m(text) {
      box-shadow: none;
      background-color: transparent;
      color: map-get($--text-button-color, $type);
      @include not-m(disabled) {
        @include m(rippling) {
          &::after {
            display: none;
          }
        }
        @include m(enter-pressed) {
          background-color: transparent;
          color: map-get($--text-button-color, $type + '-active');
        }
        &:not(:active):focus {
          @include not-m(enter-pressed) {
            background-color: transparent;
            color: map-get($--text-button-color, $type + '-focus');
          } 
        }
        @include not-m(enter-pressed) {
          &:hover {
            background-color: transparent;
            color: map-get($--text-button-color, $type + '-hover');
          }
          &:active {
            background-color: transparent;
            color: map-get($--text-button-color, $type + '-active');

          }
        }
      }
    }
    @include m(ghost) {
      background-color: map-get($map: $ghost-button-background-color, $key: $type);
      color: map-get($map: $ghost-button-color, $key: $type);
      box-shadow: map-get($map: $button-box-shadow, $key: $type + '-ghost');
      @include not-m(disabled) {
        @include m(enter-pressed) {
          background-color: map-get($map: $ghost-button-background-color, $key: $type + '-active');
        }
        &:not(:active):focus {
          @include not-m(enter-pressed) {
            background-color: map-get($map: $ghost-button-background-color, $key: $type + '-hover');
          } 
        }
        @include not-m(enter-pressed) {
          &:hover {
            background-color: map-get($map: $ghost-button-background-color, $key: $type + '-hover');
          }
          &:active {
            background-color: map-get($map: $ghost-button-background-color, $key: $type + '-active');
          }
        }
      }
      @include e(icon) {
        @include b(icon) {
          fill: map-get($map: $ghost-button-color, $key: $type) !important;
        }
        circle {
          stroke: map-get($map: $ghost-button-color, $key: $type) !important;
        }
      }
    }
    @if $type == 'default' {
      @include e(icon) {
        @include b(icon) {
          fill: map-get($map: $ghost-button-color, $key: $type) !important;
        }
        circle {
          stroke: map-get($map: $ghost-button-color, $key: $type) !important;
        }
      }
    }
    @include not-m(disabled) {
      @include m(enter-pressed) {
        background-color: map-get($map: $button-background-color, $key: $type + '-active');
      } 
      @include m(rippling) {
        &::after {
          z-index: 1;
          animation-name: #{$theme}-#{$type}-button-ripple--spread, #{$theme}-#{$type}-button-ripple--opacity;
          animation-duration: .6s;
          animation-timing-function: cubic-bezier(0, .4, .5, .9), cubic-bezier(.5, .2, .8, .5);
        }
      }
      &:not(:active):focus {
        @include not-m(enter-pressed) {
          background-color: map-get($map: $button-background-color, $key: $type + '-hover');
        } 
      }
      @include not-m(enter-pressed) {
        &:hover {
          background-color: map-get($map: $button-background-color, $key: $type + '-hover');
        }
        &:active {
          background-color: map-get($map: $button-background-color, $key: $type + '-active');
        }
      }
    }
    @content;
  }
}

@mixin ripple-mixin($type) {
  @keyframes #{$theme}-#{$type}-button-ripple--spread {
    from {
      box-shadow: map-get($map: $button-box-shadow, $key: $type + '-focus-ripple-start');
    }
    to {
      box-shadow: map-get($map: $button-box-shadow, $key: $type + '-focus-ripple-end');
    }
  }
  @keyframes #{$theme}-#{$type}-button-ripple--opacity {
    from {
      opacity: .4;
    }
    to {
      opacity: 0;
    }
  }
}

@include themes-mixin() {
  @include ripple-mixin('default');
  @include ripple-mixin('primary');
  @include ripple-mixin('error');
  @include ripple-mixin('success');
  @include ripple-mixin('warning');
  @include ripple-mixin('info');
  @include b(button) {
    @include once {
      outline: none;
      position: relative;
      border: none;
      font-family: $button-font-family;
      display: inline-block;
      align-items: center;
      justify-content: center;
      user-select: none;
      // font-weight: 700;
      text-align: center;
      transition: background-color .2s $default-cubic-bezier, opacity .15s $default-cubic-bezier, box-shadow .3s $default-cubic-bezier;
      cursor: pointer;
      &::after {
        content: "";
        border-radius: inherit;
        position: absolute;
        left: 0;
        top: 0;
        right: 0;
        bottom: 0;
      }
      @include e(icon) {
        @include fade-in-width-expand-transition();
        transition: color .3s $default-cubic-bezier;
      }
      @include e(content-aligner) {
        display: inline-block;
        line-height: inherit;
        height: 100%;
        font-size: inherit;
        white-space: nowrap;
        visibility: hidden;
        width: 0;
      }
      @include e(content) {
        white-space: nowrap;
        transition: color .3s $default-cubic-bezier;
      }
      @include m(left-icon) {
        @include e(icon) {
          margin-right: 6px;
        }
      }
      @include m(right-icon) {
        @include e(icon) {
          margin-left: 6px;
        }
      }
      @include m(block) {
        display: block;
        width: 100%;
      }
      @include m(loading) {
        cursor: default;
        opacity: 1;
      }
      @include m(disabled) {
        cursor: not-allowed;
        opacity: .4;
      }
      &::-moz-focus-inner {
        border: 0;
      }
      @include button-size-mixin('tiny');
      @include button-size-mixin('small');
      @include button-size-mixin('medium');
      @include button-size-mixin('large');
    }
    @include button-type-mixin('default');
    @include button-type-mixin('primary');
    @include button-type-mixin('info');
    @include button-type-mixin('success');
    @include button-type-mixin('warning');
    @include button-type-mixin('error');
  }
}

@include b(button-group) {
  white-space: nowrap;
  display: inline-block;
  position: relative;
  @include not-m(vertical) {
    @include m(block) {
      display: flex;
      flex-wrap: nowrap;
      @include b(button) {
        flex-grow: 1;
      }
    }
    @include b(button) {
      &:first-child:not(:last-child) {
        margin-right: 0!important;
        border-top-right-radius: 0;
        border-bottom-right-radius: 0;
      }
      &:last-child:not(:first-child) {
        margin-left: 0!important;
        border-top-left-radius: 0;
        border-bottom-left-radius: 0;
      }
      &:not(:first-child):not(:last-child) {
        margin-left: 0!important;
        margin-right: 0!important;
        border-radius: 0!important;
      }
      /**
       * Not an elegant implementation
       */
      &.n-button--default-type + .n-button--default-type {
        margin-left: -1px!important;
      }
    }
  }
  @include m(vertical) {
    display: inline-flex;
    flex-direction: column;
    @include b(button) {
      &:first-child {
        margin-bottom: 0!important;
        margin-left: 0!important;
        margin-right: 0!important;
        border-bottom-left-radius: 0;
        border-bottom-right-radius: 0;
      }
      &:last-child {
        margin-top: 0!important;
        margin-left: 0!important;
        margin-right: 0!important;
        border-top-left-radius: 0;
        border-top-right-radius: 0;
      }
      &:not(:first-child):not(:last-child) {
        margin: 0!important;
        border-radius: 0!important;
      }
    }
  }
}