carbon-components-svelte/css/_menu-button.scss at master · carbon-design-system/carbon-components-svelte · GitHub

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@import "carbon-components/scss/globals/scss/vars";
@import "carbon-components/scss/globals/scss/helper-mixins";
@import "carbon-components/scss/globals/scss/vendor/@carbon/elements/scss/import-once/import-once";

/// MenuButton trigger (v10 has no `.bx--menu-button` styles to vendor).
/// Rotates the trigger's chevron icon while the menu is open.
/// @access private
/// @group components
@mixin menu-button {
  .#{$prefix}--menu-button__trigger .#{$prefix}--btn__icon {
    transition: transform $duration--fast-01 motion(standard, productive);
  }

  .#{$prefix}--menu-button__trigger--open .#{$prefix}--btn__icon {
    transform: rotate(180deg);
  }

  // Extra-small (Carbon React size="xs", 24px). Neither Button's "small"
  // class (32px) nor any other Button size lands on 24px, so shrink further
  // on top of the "small" size already passed to the trigger.
  .#{$prefix}--menu-button__trigger--xs {
    min-height: to-rem(24px);
    padding-top: 0;
    padding-bottom: 0;
  }

  /// Icon-only MenuButton uses Menu (box-shadow) with an overflow-style
  /// trigger. OverflowMenu hides the seam with a ::after bridge on the
  /// options list; Menu has no equivalent, so the menu shadow paints onto
  /// the open trigger. Mirror that bridge for the attached icon-only case.
  /// Widths match the overflow-menu trigger sizes (sm/md/xl + our xs).
  .#{$prefix}--menu[data-carbon-menu-button-icon-only] {
    &::after {
      position: absolute;
      display: block;
      background-color: $layer;
      content: "";
    }

    &[data-floating-menu-direction="bottom"]::after {
      top: to-rem(-3px);
      left: 0;
      width: to-rem(32px);
      height: to-rem(3px);
    }

    &[data-floating-menu-direction="top"]::after {
      bottom: to-rem(-3px);
      left: 0;
      width: to-rem(32px);
      height: to-rem(3px);
    }

    &.#{$prefix}--menu--xs[data-floating-menu-direction="bottom"]::after,
    &.#{$prefix}--menu--xs[data-floating-menu-direction="top"]::after {
      width: to-rem(24px);
    }

    &.#{$prefix}--menu--md[data-floating-menu-direction="bottom"]::after,
    &.#{$prefix}--menu--md[data-floating-menu-direction="top"]::after {
      width: to-rem(40px);
    }

    &.#{$prefix}--menu--lg[data-floating-menu-direction="bottom"]::after,
    &.#{$prefix}--menu--lg[data-floating-menu-direction="top"]::after {
      width: to-rem(48px);
    }

    &[data-carbon-align="end"][data-floating-menu-direction="bottom"]::after,
    &[data-carbon-align="end"][data-floating-menu-direction="top"]::after {
      right: 0;
      left: auto;
    }

    &[data-carbon-align="center"][data-floating-menu-direction="bottom"]::after,
    &[data-carbon-align="center"][data-floating-menu-direction="top"]::after {
      left: 50%;
      transform: translateX(-50%);
    }
  }
}

@include exports("menu-button") {
  @include menu-button;
}