@material/image-list/_mixins.scss

// Copyright 2018 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.

@use 'sass:math';
@use '@material/feature-targeting/feature-targeting';
@use '@material/shape/mixins' as shape-mixins;
@use '@material/shape/functions' as shape-functions;
@use '@material/theme/theme';
@use '@material/typography/typography';
@use './variables';

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

  // postcss-bem-linter: define image-list
  .mdc-image-list {
    @include feature-targeting.targets($feat-structure) {
      display: flex;
      flex-wrap: wrap;
      // Margin and padding are set to override default user agent styles for lists, and also to center the Image List
      margin: 0 auto;
      padding: 0;
    }
  }

  .mdc-image-list__item,
  .mdc-image-list__image-aspect-container {
    @include feature-targeting.targets($feat-structure) {
      // Supports absolute positioning of protected supporting content for item, and image for image-aspect-container
      position: relative;
      box-sizing: border-box;
    }
  }

  .mdc-image-list__item {
    @include feature-targeting.targets($feat-structure) {
      list-style-type: none;
    }
  }

  .mdc-image-list__image {
    @include feature-targeting.targets($feat-structure) {
      width: 100%;
    }
  }

  // Descendant selector allows image-aspect-container to be optional in DOM structure
  .mdc-image-list__image-aspect-container .mdc-image-list__image {
    @include feature-targeting.targets($feat-structure) {
      position: absolute;
      top: 0;
      right: 0;
      bottom: 0;
      left: 0;
      height: 100%;
      // Background styles to support div instead of img
      background-repeat: no-repeat;
      background-position: center;
      background-size: cover;
    }
  }

  @include aspect(1, $query: $query);
  @include shape-radius(variables.$shape-radius, $query: $query);

  .mdc-image-list__supporting {
    @include feature-targeting.targets($feat-color) {
      @include theme.property(color, text-primary-on-background);
    }

    @include feature-targeting.targets($feat-structure) {
      display: flex;
      align-items: center;
      justify-content: space-between;
      box-sizing: border-box;
      padding: 8px 0;
      line-height: variables.$icon-size;
    }
  }

  .mdc-image-list__label {
    @include typography.typography(subtitle1, $query: $query);
    @include typography.overflow-ellipsis($query: $query);
  }

  // Modifier for labels/icons with text protection, overlaying images.

  .mdc-image-list--with-text-protection .mdc-image-list__supporting {
    @include feature-targeting.targets($feat-structure) {
      position: absolute;
      bottom: 0;
      width: 100%;
      height: variables.$text-protection-height;
      padding: 0 variables.$text-protection-horizontal-padding;
    }

    @include feature-targeting.targets($feat-color) {
      background: variables.$text-protection-background-color;
      color: #fff;
    }
  }

  // Masonry Image List, using CSS columns (i.e. renders down then across)

  .mdc-image-list--masonry {
    @include feature-targeting.targets($feat-structure) {
      display: block; // Override flex
    }

    .mdc-image-list__item {
      @include feature-targeting.targets($feat-structure) {
        break-inside: avoid-column;
      }
    }

    .mdc-image-list__image {
      @include feature-targeting.targets($feat-structure) {
        display: block;
        height: auto;
      }
    }
  }
  // postcss-bem-linter: end
}

@mixin aspect($width-height-ratio, $query: feature-targeting.all()) {
  $feat-structure: feature-targeting.create-target($query, structure);

  .mdc-image-list__image-aspect-container {
    @include feature-targeting.targets($feat-structure) {
      padding-bottom: calc(100% / #{$width-height-ratio});
    }
  }
}

@mixin shape-radius(
  $radius,
  $rtl-reflexive: false,
  $query: feature-targeting.all()
) {
  .mdc-image-list__image {
    @include shape-mixins.radius($radius, $rtl-reflexive, $query: $query);
  }

  $selector: if(
    &,
    '&.mdc-image-list--with-text-protection',
    '.mdc-image-list--with-text-protection'
  );

  #{$selector} .mdc-image-list__supporting {
    $masked-radius: shape-functions.mask-radius($radius, 0 0 1 1);

    @include shape-mixins.radius(
      $masked-radius,
      $rtl-reflexive,
      $query: $query
    );
  }
}

// Standard Image List

@mixin standard-columns(
  $column-count,
  $gutter-size: variables.$standard-gutter-size,
  $query: feature-targeting.all()
) {
  $feat-structure: feature-targeting.create-target($query, structure);

  // This uses margin rather than padding to facilitate properly positioning the supporting content element when
  // --with-text-protection is used.
  .mdc-image-list__item {
    @include feature-targeting.targets($feat-structure) {
      // Subtract extra fraction from each item's width to ensure correct wrapping in IE/Edge which round differently
      width: calc(
        100% / #{$column-count} - #{$gutter-size + math.div(1, $column-count)}
      );
      margin: math.div($gutter-size, 2);
    }
  }
}

// Masonry Image List

@mixin masonry-columns(
  $column-count,
  $gutter-size: variables.$masonry-gutter-size,
  $query: feature-targeting.all()
) {
  $feat-structure: feature-targeting.create-target($query, structure);

  @include feature-targeting.targets($feat-structure) {
    column-count: $column-count;
    column-gap: $gutter-size;
  }

  .mdc-image-list__item {
    @include feature-targeting.targets($feat-structure) {
      margin-bottom: $gutter-size;
    }
  }
}