admin/public/plugins/element-plus/theme-chalk/src/upload.scss

@use 'mixins/mixins' as *;
@use 'mixins/utils' as *;
@use 'common/var' as *;

@mixin upload-success($color: null) {
  right: -15px;
  top: -6px;
  width: 40px;
  height: 24px;
  background: getCssVar('color-success');
  text-align: center;
  transform: rotate(45deg);

  i {
    font-size: 12px;
    margin-top: 11px;
    transform: rotate(-45deg);
    color: $color;
  }
}

@include b(upload) {
  @include set-component-css-var('upload', $upload);
}

@include b(upload) {
  @include utils-inline-flex-center;

  cursor: pointer;
  outline: none;

  @include when(disabled) {
    cursor: not-allowed;
    &:focus {
      border-color: getCssVar('border-color', 'darker');
      color: inherit;
      .#{$namespace}-upload-dragger {
        border-color: getCssVar('border-color', 'darker');
      }
    }
    .#{$namespace}-upload-dragger {
      cursor: not-allowed;
      background-color: getCssVar('disabled-bg-color');

      .#{bem('upload', 'text')} {
        color: getCssVar('text-color-placeholder');

        em {
          color: getCssVar('disabled-text-color');
        }
      }

      &:hover {
        border-color: getCssVar('border-color', 'darker');
      }
    }
  }

  @include e(input) {
    display: none;
  }

  @include e(tip) {
    font-size: 12px;
    color: getCssVar('text-color', 'regular');
    margin-top: 7px;
  }

  iframe {
    position: absolute;
    z-index: -1;
    top: 0;
    left: 0;
    opacity: 0;
    filter: alpha(opacity=0);
  }

  /* Picture Card for Wall */
  @include m(picture-card) {
    @include set-css-var-value(('upload', 'picture-card', 'size'), 148px);

    background-color: getCssVar('fill-color', 'lighter');
    border: 1px dashed getCssVar('border-color', 'darker');
    border-radius: 6px;
    box-sizing: border-box;
    width: getCssVar('upload', 'picture-card', 'size');
    height: getCssVar('upload', 'picture-card', 'size');
    cursor: pointer;
    vertical-align: top;

    @include utils-inline-flex-center;

    > i {
      font-size: 28px;
      color: getCssVar('text-color', 'secondary');
    }

    &:hover {
      border-color: getCssVar('color-primary');
      color: getCssVar('color-primary');
    }
  }

  @include when(drag) {
    display: block;
  }

  &:focus {
    border-color: getCssVar('color-primary');
    color: getCssVar('color-primary');

    .#{$namespace}-upload-dragger {
      border-color: getCssVar('color-primary');
    }
  }
}

@include b(upload-dragger) {
  padding: getCssVar('upload-dragger-padding-horizontal')
    getCssVar('upload-dragger-padding-vertical');
  background-color: getCssVar('fill-color', 'blank');
  border: 1px dashed getCssVar('border-color');
  border-radius: 6px;
  box-sizing: border-box;
  text-align: center;
  cursor: pointer;
  position: relative;
  overflow: hidden;

  .#{bem('icon', '', 'upload')} {
    font-size: 67px;
    color: getCssVar('text-color', 'placeholder');
    margin-bottom: 16px;
    line-height: 50px;
  }

  + .#{bem('upload', 'tip')} {
    text-align: center;
  }

  ~ .#{bem('upload', 'files')} {
    border-top: getCssVar('border');
    margin-top: 7px;
    padding-top: 5px;
  }

  .#{bem('upload', 'text')} {
    color: getCssVar('text-color', 'regular');
    font-size: 14px;
    text-align: center;

    em {
      color: getCssVar('color-primary');
      font-style: normal;
    }
  }

  &:hover {
    border-color: getCssVar('color-primary');
  }

  @include when(dragover) {
    padding: calc(#{getCssVar('upload-dragger-padding-horizontal')} - 1px)
      calc(#{getCssVar('upload-dragger-padding-vertical')} - 1px);
    background-color: getCssVar('color', 'primary', 'light-9');
    border: 2px dashed getCssVar('color-primary');
  }
}

@include b(upload-list) {
  margin: 10px 0 0;
  padding: 0;
  list-style: none;
  position: relative;

  @include e(item) {
    transition: all 0.5s cubic-bezier(0.55, 0, 0.1, 1);
    font-size: 14px;
    color: getCssVar('text-color', 'regular');
    margin-bottom: 5px;
    position: relative;
    box-sizing: border-box;
    border-radius: 4px;
    width: 100%;

    .#{bem('progress')} {
      position: absolute;
      top: 20px;
      width: 100%;
    }

    .#{bem('progress', 'text')} {
      position: absolute;
      right: 0;
      top: -13px;
    }

    .#{bem('progress-bar')} {
      margin-right: 0;
      padding-right: 0;
    }

    & .#{bem('icon', '', 'upload-success')} {
      color: getCssVar('color-success');
    }

    .#{bem('icon', '', 'close')} {
      display: none;
      position: absolute;
      right: 5px;
      top: 50%;
      cursor: pointer;
      opacity: 0.75;
      color: getCssVar('text-color', 'regular');
      transition: opacity getCssVar('transition-duration');
      transform: translateY(-50%);

      &:hover {
        opacity: 1;
        color: getCssVar('color-primary');
      }
    }

    & .#{bem('icon', '', 'close-tip')} {
      display: none;
      position: absolute;
      top: 1px;
      right: 5px;
      font-size: 12px;
      cursor: pointer;
      opacity: 1;
      color: getCssVar('color-primary');
      font-style: normal;
    }

    &:hover {
      background-color: getCssVar('fill-color', 'light');

      .#{bem('icon', '', 'close')} {
        display: inline-flex;
      }

      .#{bem('progress', 'text')} {
        display: none;
      }
    }

    .#{bem('upload-list', 'item-info')} {
      display: inline-flex;
      justify-content: center;
      flex-direction: column;
      width: calc(100% - 30px);
      margin-left: 4px;
    }

    @include when(success) {
      .#{bem('upload-list', 'item-status-label')} {
        display: inline-flex;
      }

      .#{bem('upload-list', 'item-name')}:hover,
      .#{bem('upload-list', 'item-name')}:focus {
        color: getCssVar('color-primary');
        cursor: pointer;
      }

      &:focus:not(:hover) {
        /* 键盘focus */
        .#{bem('icon', '', 'close-tip')} {
          display: inline-block;
        }
      }

      &:not(.focusing):focus,
      &:active {
        /* click时 */
        outline-width: 0;

        .#{bem('icon', '', 'close-tip')} {
          display: none;
        }
      }

      &:hover,
      &:focus {
        .#{bem('upload-list', 'item-status-label')} {
          display: none;
          opacity: 0;
        }
      }
    }
  }

  @include e(item-name) {
    color: getCssVar('text-color', 'regular');
    display: inline-flex;
    text-align: center;
    align-items: center;

    padding: 0 4px;

    transition: color getCssVar('transition-duration');
    font-size: getCssVar('font-size', 'base');

    .#{$namespace}-icon {
      margin-right: 6px;
      color: getCssVar('text-color', 'secondary');
    }
  }

  @include e(item-file-name) {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
  }

  @include e(item-status-label) {
    position: absolute;
    right: 5px;
    top: 0;
    line-height: inherit;
    display: none;

    height: 100%;
    justify-content: center;
    align-items: center;

    transition: opacity getCssVar('transition-duration');
  }

  @include e(item-delete) {
    position: absolute;
    right: 10px;
    top: 0;
    font-size: 12px;
    color: getCssVar('text-color', 'regular');
    display: none;

    &:hover {
      color: getCssVar('color-primary');
    }
  }

  // upload-list
  @include m(picture-card) {
    @include set-css-var-value(('upload-list', 'picture-card', 'size'), 148px);

    display: inline-flex;
    flex-wrap: wrap;
    margin: 0;

    .#{bem('upload-list', 'item')} {
      overflow: hidden;
      background-color: getCssVar('fill-color', 'blank');
      border: 1px solid getCssVar('border-color');
      border-radius: 6px;
      box-sizing: border-box;
      width: getCssVar('upload-list', 'picture-card', 'size');
      height: getCssVar('upload-list', 'picture-card', 'size');
      margin: 0 8px 8px 0;
      padding: 0;

      display: inline-flex;

      .#{bem('icon', '' ,'check')},
      .#{bem('icon', '' ,'circle-check')} {
        color: $color-white;
      }

      .#{bem('icon', '', 'close')} {
        display: none;
      }

      &:hover {
        .#{bem('upload-list', 'item-status-label')} {
          opacity: 0;
          // for fade out
          display: block;
        }

        .#{$namespace}-progress__text {
          display: block;
        }
      }
    }

    .#{bem('upload-list', 'item')} {
      .#{bem('upload-list', 'item-name')} {
        display: none;
      }
    }

    .#{bem('upload-list', 'item-thumbnail')} {
      width: 100%;
      height: 100%;
      object-fit: contain;
    }

    .#{bem('upload-list', 'item-status-label')} {
      @include upload-success();
    }

    .#{bem('upload-list', 'item-actions')} {
      position: absolute;
      width: 100%;
      height: 100%;
      left: 0;
      top: 0;
      cursor: default;

      display: inline-flex;
      justify-content: center;
      align-items: center;

      color: #fff;
      opacity: 0;
      font-size: 20px;
      background-color: getCssVar('overlay-color', 'lighter');
      transition: opacity getCssVar('transition-duration');

      span {
        display: none;
        cursor: pointer;
      }

      span + span {
        margin-left: 16px;
      }

      .#{bem('upload-list', 'item-delete')} {
        position: static;
        font-size: inherit;
        color: inherit;
      }

      &:hover {
        opacity: 1;

        span {
          display: inline-flex;
        }
      }
    }

    .#{bem('progress')} {
      top: 50%;
      left: 50%;
      transform: translate(-50%, -50%);
      bottom: auto;
      width: 126px;

      .#{$namespace}-progress__text {
        top: 50%;
      }
    }
  }

  @include m(picture) {
    .#{bem('upload-list', 'item')} {
      overflow: hidden;
      z-index: 0;
      background-color: getCssVar('fill-color', 'blank');
      border: 1px solid getCssVar('border-color');
      border-radius: 6px;
      box-sizing: border-box;
      margin-top: 10px;
      padding: 10px;
      display: flex;
      align-items: center;

      .#{bem('icon', '' ,'check')},
      .#{bem('icon', '' ,'circle-check')} {
        color: $color-white;
      }

      &:hover {
        .#{bem('upload-list', 'item-status-label')} {
          opacity: 0;
          display: inline-flex;
        }

        .#{bem('progress', 'text')} {
          display: block;
        }
      }

      &.is-success {
        .#{bem('upload-list', 'item-name')} {
          i {
            display: none;
          }
        }
      }

      & .#{bem('icon', '' ,'close')} {
        top: 5px;
        transform: translateY(0);
      }
    }

    .#{bem('upload-list', 'item-thumbnail')} {
      $item-thumbnail-size: 70px;

      display: inline-flex;
      justify-content: center;
      align-items: center;

      width: $item-thumbnail-size;
      height: $item-thumbnail-size;
      object-fit: contain;

      position: relative;
      z-index: 1;
      background-color: getCssVar('color-white');
    }

    .#{bem('upload-list', 'item-status-label')} {
      position: absolute;
      right: -17px;
      top: -7px;
      width: 46px;
      height: 26px;
      background: getCssVar('color-success');
      text-align: center;
      transform: rotate(45deg);

      i {
        font-size: 12px;
        margin-top: 12px;
        transform: rotate(-45deg);
      }
    }

    .#{$namespace}-progress {
      position: relative;
      top: -7px;
    }
  }
}

@include b(upload-cover) {
  position: absolute;
  left: 0;
  top: 0;
  width: 100%;
  height: 100%;
  overflow: hidden;
  z-index: 10;
  cursor: default;
  @include utils-vertical-center;

  img {
    display: block;
    width: 100%;
    height: 100%;
  }

  @include e(label) {
    @include upload-success(#fff);
  }

  @include e(progress) {
    display: inline-block;
    vertical-align: middle;
    position: static;
    width: 243px;

    + .#{bem('upload', 'inner')} {
      opacity: 0;
    }
  }

  @include e(content) {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
  }

  @include e(interact) {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: getCssVar('overlay-color', 'light');
    text-align: center;

    .btn {
      display: inline-block;
      color: $color-white;
      font-size: 14px;
      cursor: pointer;
      vertical-align: middle;
      transition: getCssVar('transition-md-fade');
      margin-top: 60px;

      i {
        margin-top: 0;
      }

      span {
        opacity: 0;
        transition: opacity 0.15s linear;
      }

      &:not(:first-child) {
        margin-left: 35px;
      }

      &:hover {
        transform: translateY(-13px);

        span {
          opacity: 1;
        }
      }

      i {
        color: $color-white;
        display: block;
        font-size: 24px;
        line-height: inherit;
        margin: 0 auto 5px;
      }
    }
  }

  @include e(title) {
    position: absolute;
    bottom: 0;
    left: 0;
    background-color: $color-white;
    height: 36px;
    width: 100%;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    font-weight: normal;
    text-align: left;
    padding: 0 10px;
    margin: 0;
    line-height: 36px;
    font-size: 14px;
    color: getCssVar('text-color', 'primary');
  }

  + .#{bem('upload', 'inner')} {
    opacity: 0;
    position: relative;
    z-index: 1;
  }
}