ant-design/components/button/style/index.less

@import '../../style/themes/index';
@import '../../style/mixins/index';
@import './mixin';

@btn-prefix-cls: ~'@{ant-prefix}-btn';

// for compatible
@btn-ghost-color: @text-color;
@btn-ghost-bg: transparent;
@btn-ghost-border: @border-color-base;

// Button styles
// -----------------------------
.@{btn-prefix-cls} {
  // Fixing https://github.com/ant-design/ant-design/issues/12978
  // Fixing https://github.com/ant-design/ant-design/issues/20058
  // Fixing https://github.com/ant-design/ant-design/issues/19972
  // Fixing https://github.com/ant-design/ant-design/issues/18107
  // Fixing https://github.com/ant-design/ant-design/issues/13214
  // It is a render problem of chrome, which is only happened in the codesandbox demo
  // 0.001px solution works and I don't why
  line-height: @btn-line-height;
  .btn();
  .btn-default();

  // Fix loading button animation
  // https://github.com/ant-design/ant-design/issues/24323
  > span {
    display: inline-block;
  }

  &-primary {
    .btn-primary();

    .@{btn-prefix-cls}-group &:not(:first-child):not(:last-child) {
      border-right-color: @btn-group-border;
      border-left-color: @btn-group-border;

      &:disabled {
        border-color: @btn-default-border;
      }
    }

    .@{btn-prefix-cls}-group &:first-child {
      &:not(:last-child) {
        border-right-color: @btn-group-border;

        &[disabled] {
          border-right-color: @btn-default-border;
        }
      }
    }

    .@{btn-prefix-cls}-group &:last-child:not(:first-child),
    .@{btn-prefix-cls}-group & + & {
      border-left-color: @btn-group-border;

      &[disabled] {
        border-left-color: @btn-default-border;
      }
    }
  }

  &-ghost {
    .btn-ghost();
  }

  &-dashed {
    .btn-dashed();
  }

  // type="danger" will deprecated
  // use danger instead
  &-danger {
    .btn-danger();
  }

  &-link {
    .btn-link();
  }

  &-text {
    .btn-text();
  }

  &-dangerous {
    .btn-danger-default();
  }

  &-dangerous&-primary {
    .btn-danger();
  }

  &-dangerous&-link {
    .btn-danger-link();
  }

  &-dangerous&-text {
    .btn-danger-text();
  }

  &-icon-only {
    .btn-square(@btn-prefix-cls);
    vertical-align: -3px;

    > .@{iconfont-css-prefix} {
      display: flex;
      justify-content: center;
    }
  }

  &-round {
    .btn-round(@btn-prefix-cls);
    &.@{btn-prefix-cls}-icon-only {
      width: auto;
    }
  }

  &-circle {
    .btn-circle(@btn-prefix-cls);
  }

  &::before {
    position: absolute;
    top: -@btn-border-width;
    right: -@btn-border-width;
    bottom: -@btn-border-width;
    left: -@btn-border-width;
    z-index: 1;
    display: none;
    background: @component-background;
    border-radius: inherit;
    opacity: 0.35;
    transition: opacity 0.2s;
    content: '';
    pointer-events: none;
  }

  .@{iconfont-css-prefix} {
    transition: margin-left 0.3s @ease-in-out;

    // Follow icon blur under windows. Change the render.
    // https://github.com/ant-design/ant-design/issues/13924
    &.@{iconfont-css-prefix}-plus,
    &.@{iconfont-css-prefix}-minus {
      > svg {
        shape-rendering: optimizeSpeed;
      }
    }
  }

  &&-loading {
    position: relative;
    &:not([disabled]) {
      pointer-events: none;
    }

    &::before {
      display: block;
    }
  }

  & > &-loading-icon {
    transition: all 0.3s @ease-in-out;

    .@{iconfont-css-prefix} {
      padding-right: @padding-xs;
      animation: none;
      // for smooth button padding transition
      svg {
        animation: loadingCircle 1s infinite linear;
      }
    }

    &:only-child {
      .@{iconfont-css-prefix} {
        padding-right: 0;
      }
    }
  }

  &-group {
    .btn-group(@btn-prefix-cls);
  }

  // http://stackoverflow.com/a/21281554/3040605
  &:focus > span,
  &:active > span {
    position: relative;
  }

  // To ensure that a space will be placed between character and `Icon`.
  > .@{iconfont-css-prefix} + span,
  > span + .@{iconfont-css-prefix} {
    margin-left: @margin-xs;
  }

  &&-background-ghost {
    color: @btn-default-ghost-color;
    border-color: @btn-default-ghost-border;
    &,
    &:hover,
    &:active,
    &:focus {
      background: @btn-default-ghost-bg;
    }
  }

  &-background-ghost&-primary {
    .button-variant-ghost(@btn-primary-bg, @btn-primary-bg, @primary-color-hover, @primary-color-active);
  }

  &-background-ghost&-danger {
    .button-variant-ghost(@btn-danger-border, @btn-danger-border, @error-color-hover, @error-color-active);
  }

  &-background-ghost&-dangerous {
    .button-variant-ghost(@btn-danger-border, @btn-danger-border, @error-color-hover, @error-color-active);
  }

  &-background-ghost&-dangerous&-link {
    .button-variant-ghost(@btn-danger-border, transparent, @error-color-hover, @error-color-active);
  }

  &-two-chinese-chars::first-letter {
    letter-spacing: 0.34em;
  }

  &-two-chinese-chars > *:not(.@{iconfont-css-prefix}) {
    margin-right: -0.34em;
    letter-spacing: 0.34em;
  }

  &-block {
    width: 100%;
  }

  // https://github.com/ant-design/ant-design/issues/12681
  // same method as Select
  &:empty {
    display: inline-block;
    width: 0;
    visibility: hidden;
    content: '\a0';
  }
}

a.@{btn-prefix-cls} {
  // Fixing https://github.com/ant-design/ant-design/issues/12978
  // https://github.com/ant-design/ant-design/issues/29978
  // It is a render problem of chrome, which is only happened in the codesandbox demo
  // 0.1px for padding-top solution works and I don't why
  padding-top: 0.01px !important;
  line-height: @btn-height-base - 2px;

  &-lg {
    line-height: @btn-height-lg - 2px;
  }
  &-sm {
    line-height: @btn-height-sm - 2px;
  }
}

@import './rtl';