@material/fab/_fab.scss

// Copyright 2016 Google Inc.
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.

// stylelint-disable selector-class-pattern --
// Selector '.mdc-*' should only be used in this project.

@use '@material/animation/functions' as animation-functions;
@use '@material/elevation/elevation-theme';
@use '@material/elevation/elevation';
@use '@material/feature-targeting/feature-targeting';
@use '@material/focus-ring/focus-ring';
@use '@material/dom/mixins' as dom-mixins;
@use '@material/ripple/ripple';
@use '@material/ripple/ripple-theme';
@use '@material/shape/mixins' as shape-mixins;
@use '@material/shape/functions' as shape-functions;
@use '@material/theme/css';
@use '@material/theme/custom-properties';
@use '@material/theme/replace';
@use '@material/theme/state';
@use '@material/theme/theme-color';
@use '@material/theme/theme';
@use '@material/touch-target/mixins' as touch-target-mixins;
@use '@material/typography/typography';
@use './fab-custom-properties';
@use './extended-fab-theme';
@use './fab-theme';
@use 'sass:math';
@use 'sass:list';

@mixin core-styles($query: feature-targeting.all()) {
  @include without-ripple($query);
  @include ripple($query);
}

@mixin static-styles($query: feature-targeting.all()) {
  // postcss-bem-linter: define fab

  @include touch-target-mixins.wrapper($query); // COPYBARA_COMMENT_THIS_LINE
  // prettier-ignore
  @include elevation.overlay-common($query); // COPYBARA_COMMENT_THIS_LINE

  .mdc-fab {
    @include base_($query: $query);
  }

  .mdc-fab--mini {
    @include mini_($query: $query);
  }

  .mdc-fab--extended {
    @include extended_($query: $query);
  }

  .mdc-fab--touch {
    @include touch-target-mixins.margin(
      $component-height: fab-theme.$mini-height,
      $component-width: fab-theme.$mini-height,
      $query: $query
    );

    .mdc-fab__touch {
      @include touch-target-mixins.touch-target(
        $set-width: true,
        $query: $query
      );
    }
  }

  .mdc-fab::before {
    @include dom-mixins.transparent-border($query: $query);
  }

  .mdc-fab__label {
    @include label_($query: $query);
  }

  .mdc-fab__icon {
    @include icon_($query: $query);
  }

  // Increase specificity for FAB icon styles that need to override styles defined for .material-icons
  // (which is loaded separately so the order of CSS definitions is not guaranteed)
  .mdc-fab .mdc-fab__icon {
    @include icon-overrides_($query: $query);
  }

  .mdc-fab--exited {
    @include exited_($query: $query);
  }
  // postcss-bem-linter: end
}

@mixin without-ripple($query: feature-targeting.all()) {
  @include static-styles($query: $query);

  .mdc-fab {
    @include fab-theme.container-color(secondary, $query: $query);
    @include fab-theme.icon-size(24px, $query: $query);
    @include fab-theme.ink-color(on-secondary, $query: $query);
    @include fab-theme.shape-radius(fab-theme.$shape-radius, $query: $query);
    @include elevation-theme.elevation(6, $query: $query);
  }
}

@mixin ripple($query: feature-targeting.all()) {
  $feat-structure: feature-targeting.create-target($query, structure);

  @include ripple.common($query); // COPYBARA_COMMENT_THIS_LINE

  .mdc-fab {
    @include ripple.surface(
      $query: $query,
      $ripple-target: fab-theme.$ripple-target
    );
    @include ripple.radius-bounded(
      $query: $query,
      $ripple-target: fab-theme.$ripple-target
    );
    // Set `$opacity-map` to null to apply default opacity-map.
    @include fab-theme.ripple-color(
      on-secondary,
      $opacity-map: null,
      $query: $query
    );

    #{fab-theme.$ripple-target} {
      @include ripple.target-common($query: $query);

      @include feature-targeting.targets($feat-structure) {
        overflow: hidden;
      }
    }
    @include ripple-theme.behind-content(
      fab-theme.$ripple-target,
      $query: $query
    );
  }
}

$icon-enter-delay_: 90ms;
$icon-enter-duration_: 180ms;

@mixin base_($query: feature-targeting.all()) {
  @include elevation-theme.overlay-surface-position($query: $query);
  @include elevation-theme.overlay-dimensions(100%, $query: $query);

  $feat-animation: feature-targeting.create-target($query, animation);
  $feat-structure: feature-targeting.create-target($query, structure);

  @include feature-targeting.targets($feat-structure) {
    display: inline-flex;
    position: relative;
    align-items: center;
    justify-content: center;
    box-sizing: border-box;
    width: fab-theme.$height;
    height: fab-theme.$height;
    padding: 0;
    border: none;
    fill: currentColor;
    text-decoration: none;
    cursor: pointer;
    user-select: none;
    -moz-appearance: none;
    -webkit-appearance: none;
    // Even though `visible` is the default, IE 11 computes the property as
    // `hidden` in some cases, unless it's explicitly defined here.
    overflow: visible;
  }

  @include feature-targeting.targets($feat-animation) {
    transition: box-shadow elevation-theme.$transition-duration
        elevation-theme.$transition-timing-function,
      opacity 15ms linear 30ms,
      animation-functions.enter(
        transform,
        $icon-enter-duration_ + $icon-enter-delay_
      );
  }

  &::-moz-focus-inner {
    @include feature-targeting.targets($feat-structure) {
      padding: 0;
      border: 0;
    }
  }

  &:hover {
    @include elevation-theme.elevation(8, $query: $query);
  }

  @include ripple-theme.focus() {
    @include elevation-theme.elevation(8, $query: $query);
  }

  .mdc-fab__focus-ring {
    @include feature-targeting.targets($feat-structure) {
      position: absolute;
    }
  }

  @include ripple-theme.focus() {
    .mdc-fab__focus-ring {
      @include focus-ring.focus-ring($query: $query);
    }
  }

  // Increase active state specificity due to ripple-theme.focus().
  &:active,
  &:focus:active {
    @include elevation-theme.elevation(12, $query: $query);
  }

  &:active,
  &:focus {
    // TODO(acdvorak): Should this be paired with states and/or ripple? We don't want to disable outline
    // (an accessibility/usability feature) unless we're confident that there is also a visual indication that the
    // element has focus. If the client has customized the DOM in some unexpected way, and is certain that another
    // element will receive focus instead, they can always override this property manually in their CSS.
    @include feature-targeting.targets($feat-structure) {
      outline: none;
    }
  }

  &:hover {
    @include feature-targeting.targets($feat-structure) {
      cursor: pointer;
    }
  }

  // This allows for using SVGs within them to align properly in all browsers.
  // Can remove once: https://bugzilla.mozilla.org/show_bug.cgi?id=1294515 is resolved.

  // stylelint-disable selector-max-type
  // postcss-bem-linter: ignore
  > svg {
    @include feature-targeting.targets($feat-structure) {
      width: 100%;
    }
  }
  // stylelint-enable selector-max-type
}

@mixin mini_($query: feature-targeting.all()) {
  $feat-structure: feature-targeting.create-target($query, structure);

  @include feature-targeting.targets($feat-structure) {
    width: fab-theme.$mini-height;
    height: fab-theme.$mini-height;
  }
}

@mixin extended_($query: feature-targeting.all()) {
  @include typography.typography(button, $query: $query);
  @include extended-fab-theme.extended-shape-radius(
    fab-theme.$shape-radius,
    $query: $query
  );
  $extended-icon-padding: custom-properties.create(
    fab-custom-properties.$extended-icon-padding,
    extended-fab-theme.$extended-icon-padding
  );
  $extended-label-padding: custom-properties.create(
    fab-custom-properties.$extended-label-padding,
    extended-fab-theme.$extended-label-padding
  );
  @include extended-fab-theme.extended-padding(
    extended-fab-theme.$extended-icon-padding,
    extended-fab-theme.$extended-label-padding,
    $query: $query
  );

  $feat-structure: feature-targeting.create-target($query, structure);

  @include feature-targeting.targets($feat-structure) {
    width: auto;
    max-width: 100%;
    height: extended-fab-theme.$extended-height;
    // This allows the text within the extended fab to be centered for varying font sizes.
    /* @alternate */
    line-height: normal;
  }
}

@mixin icon_($query: feature-targeting.all()) {
  $feat-animation: feature-targeting.create-target($query, animation);
  $feat-structure: feature-targeting.create-target($query, structure);

  @include feature-targeting.targets($feat-animation) {
    transition: animation-functions.enter(
      transform,
      $icon-enter-duration_,
      $icon-enter-delay_
    );
  }

  @include feature-targeting.targets($feat-structure) {
    fill: currentColor;
    will-change: transform;
  }
}

@mixin label_($query: feature-targeting.all()) {
  $feat-structure: feature-targeting.create-target($query, structure);

  @include feature-targeting.targets($feat-structure) {
    justify-content: flex-start;
    text-overflow: ellipsis;
    white-space: nowrap;
    overflow-x: hidden;
    overflow-y: visible;
  }
}

@mixin icon-overrides_($query: feature-targeting.all()) {
  $feat-structure: feature-targeting.create-target($query, structure);

  @include feature-targeting.targets($feat-structure) {
    display: inline-flex;
    align-items: center;
    justify-content: center;
  }
}

@mixin exited_($query: feature-targeting.all()) {
  $feat-animation: feature-targeting.create-target($query, animation);
  $feat-structure: feature-targeting.create-target($query, structure);

  @include feature-targeting.targets($feat-structure) {
    transform: scale(0);
    opacity: 0;
  }

  @include feature-targeting.targets($feat-animation) {
    transition: opacity 15ms linear 150ms,
      animation-functions.exit-permanent(transform, 180ms);
  }

  .mdc-fab__icon {
    @include feature-targeting.targets($feat-structure) {
      transform: scale(0);
    }

    @include feature-targeting.targets($feat-animation) {
      transition: animation-functions.exit-permanent(transform, 135ms);
    }
  }
}