ant-design/style/components/upload.less

@upload-prefix-cls: ant-upload;
@upload-item: ant-upload-list-item;
@pictrue-card-size: 96px;

.@{upload-prefix-cls} {
  font-size: @font-size-base;

  > span {
    display: block;
    width: 100%;
    outline: none;
  }

  input[type="file"] {
    cursor: pointer;
  }

  &&-select {
    display: inline-block;
  }

  &&-select-picture-card {
    border: 1px dashed @border-color-base;
    width: @pictrue-card-size;
    height: @pictrue-card-size;
    padding: 24px 0;
    border-radius: @border-radius-base;
    background-color: #fbfbfb;
    text-align: center;
    cursor: pointer;
    transition: border-color 0.3s ease;
    display: inline-block;
    vertical-align: top;
    margin-right: 8px;
    margin-bottom: 8px;

    &:hover {
      border-color: @primary-color;
    }
  }

  &&-drag {
    border: 1px dashed @border-color-base;
    transition: border-color 0.3s ease;
    cursor: pointer;
    border-radius: @border-radius-base;
    text-align: center;
    width: 100%;
    height: 100%;
    position: relative;

    &.@{upload-prefix-cls}-drag-hover {
      border: 2px dashed tint(@primary-color, 20%);
    }

    > span {
      display: table;
      height: 100%;
    }

    .@{upload-prefix-cls}-drag-container {
      display: table-cell;
      vertical-align: middle;
    }

    &:hover {
      border-color: tint(@primary-color, 20%);
    }

    p.@{upload-prefix-cls}-drag-icon {
      .anticon {
        font-size: 80px;
        margin-top: -5px;
        color: tint(@primary-color, 20%);
      }
      height: 60px;
      margin-bottom: 24px;
    }
    p.@{upload-prefix-cls}-text {
      font-size: 14px;
    }
    p.@{upload-prefix-cls}-hint {
      font-size: 12px;
      color: #999;
    }
    .anticon-plus {
      font-size: 30px;
      transition: all 0.3s ease;
      color: #d9d9d9;
      &:hover {
        color: #999;
      }
    }
    &:hover .anticon-plus {
      color: #999;
    }
  }
}

.@{upload-prefix-cls}-list {
  &-item {
    overflow: hidden;
    margin-top: 8px;
    font-size: 12px;

    &-info {
      height: 22px;
      line-height: 22px;
      padding: 0 4px;
      transition: background-color 0.3s ease;

      .anticon-paper-clip {
        margin-right: 4px;
        font-size: 12px;
        color: #999;
      }
      .anticon-cross {
        .iconfont-size-under-12px(10px);
        transition: all 0.3s ease;
        opacity: 0;
        cursor: pointer;
        float: right;
        color: #999;
        line-height: 22px;
        &:hover {
          color: #666;
        }
      }
    }

    &:hover &-info {
      background-color: tint(@primary-color, 90%);
    }

    &:hover .anticon-cross {
      opacity: 1;
    }

    &-error,
    &-error .anticon-paper-clip {
      color: @error-color;
    }

    &-error .anticon-cross {
      opacity: 1;
    }

    &-progress {
      padding: 0 8px 0 20px;
      margin-top: -2px;
      margin-bottom: 1px;
      font-size: 12px;
      .ant-progress-line-inner {
        vertical-align: middle;
      }
    }
  }

  &-picture,
  &-picture-card {
    .@{upload-item} {
      padding: 8px;
      border-radius: @border-radius-base;
      border: 1px solid @border-color-base;
      height: 66px;
      position: relative;
      &:hover {
        background: transparent;
      }
    }

    .@{upload-item}-info {
      padding: 0;
    }

    .@{upload-item}:hover .@{upload-item}-info {
      background: transparent;
    }

    .@{upload-item}-uploading {
      border-style: dashed;
    }

    .@{upload-item}-thumbnail {
      width: 48px;
      height: 48px;
      position: absolute;
      top: 8px;
      left: 8px;
    }

    .@{upload-item}-thumbnail img {
      width: 48px;
      height: 48px;
      display: block;
    }

    .@{upload-item}-thumbnail.anticon:before {
      line-height: 48px;
      font-size: 24px;
      color: #999;
    }

    .@{upload-item}-name {
      overflow: hidden;
      text-overflow: ellipsis;
      white-space: nowrap;
      margin: 0 0 0 8px;
      line-height: 42px;
      transition: all 0.3s ease;
      padding-left: 48px;
      padding-right: 8px;
      max-width: 100%;
      display: inline-block;
      box-sizing: border-box;
    }

    .@{upload-item}-uploading .@{upload-item}-name {
      line-height: 28px;
    }

    .@{upload-item}-progress {
      padding-left: 56px;
      margin-top: 0;
    }

    .anticon-cross {
      position: absolute;
      right: 8px;
      top: 8px;
      line-height: 1;
    }
  }

  &-picture-card {
    display: inline-block;

    .@{upload-item} {
      display: inline-block;
      width: @pictrue-card-size;
      height: @pictrue-card-size;
      margin: 0 8px 8px 0;
    }

    .@{upload-item}-info {
      height: 100%;
      position: relative;

      &:before {
        content: ' ';
        position: absolute;
        z-index: 1;
        background-color: #808080;
        transition: all 0.3s ease;
        opacity: 0;
        width: 100%;
        height: 100%;
      }

      .anticon-eye-o,
      .anticon-delete {
        position: absolute;
        left: 50%;
        top: 50%;
        z-index: 10;
        -webkit-transition: all 0.3s ease;
        transition: all 0.3s ease;
        cursor: pointer;
        font-size: 16px;
        width: 16px;
        line-height: 1;
        color: #eee;
        opacity: 0;
        margin-top: -8px;
        margin-left: -22px;
        &:hover {
          color: #fff;
        }
      }

      .anticon-delete {
        left: 50%;
        margin-left: 6px;
      }

      &:hover {
        &:before {
          opacity: .8;
        }

        .anticon-eye-o,
        .anticon-delete {
          opacity: 1;
        }
      }
    }

    .@{upload-item}-thumbnail,
    .@{upload-item}-thumbnail img {
      display: block;
      width: 100%;
      height: 100%;
      position: static;
    }

    .@{upload-item}-name {
      display: none;
    }

    .@{upload-item}-uploading {
      &.@{upload-item} {
        background-color: #fbfbfb;
      }

      .@{upload-item}-info {
        &:before,
        .anticon-eye-o,
        .anticon-delete {
          display: none;
        }
      }

      &-text {
        margin-top: 18px;
        color: #999;
      }
    }

    .@{upload-item}-progress {
      padding-left: 0;
    }
  }

  .@{upload-prefix-cls}-success-icon {
    color: @success-color;
    font-weight: bold;
  }

  .@{upload-prefix-cls}-margin-top-enter {
    animation: uploadMarginTopIn .3s @ease-in-out-circ;
  }

  .@{upload-prefix-cls}-margin-top-leave {
    animation: uploadMarginTopOut .3s @ease-in-out-circ;
  }
}

@keyframes uploadMarginTopIn {
  from {
    margin-top: -25px;
    opacity: 0;
  }
}

@keyframes uploadMarginTopOut {
  to {
    margin-top: -25px;
    opacity: 0;
  }
}