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path: root/viewer/src/components/LdThumbnail.vue
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<!-- ldgallery - A static generator which turns a collection of tagged
--             pictures into a searchable web gallery.
--
-- Copyright (C) 2019-2020  Guillaume FOUET
--
-- This program is free software: you can redistribute it and/or modify
-- it under the terms of the GNU Affero General Public License as
-- published by the Free Software Foundation, either version 3 of the
-- License, or (at your option) any later version.
--
-- This program is distributed in the hope that it will be useful,
-- but WITHOUT ANY WARRANTY; without even the implied warranty of
-- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-- GNU Affero General Public License for more details.
--
-- You should have received a copy of the GNU Affero General Public License
-- along with this program.  If not, see <https://www.gnu.org/licenses/>.
-->

<template>
  <div :class="{'preload': loading}">
    <v-lazy-image
      v-if="item.thumbnail"
      :src="pictureSrc(item.thumbnail.resource)"
      :style="pictureStyle"
      :title="item.title"
      @intersect="loading=true"
      @load="loading=false"
    />
    <div v-else class="thumbnail-other flex-column flex-center">
      <div>
        <fa-icon :icon="icon" size="4x" />
      </div>
      {{item.title}}
    </div>
  </div>
</template>

<script lang="ts">
import { Component, Vue, Prop } from "vue-property-decorator";
import Navigation from "@/services/navigation";

@Component
export default class LdThumbnail extends Vue {
  @Prop({ required: true }) readonly item!: Gallery.Item;

  loading: boolean = false;

  pictureSrc(resource: string) {
    return this.$galleryStore.resourceRoot + resource;
  }

  get pictureStyle() {
    const resolution = this.item.thumbnail!.resolution;
    return { width: `${resolution.width}px`, height: `${resolution.height}px` };
  }

  get icon() {
    return Navigation.getIcon(this.item);
  }
}
</script>

<style lang="scss">
@import "~@/assets/scss/theme.scss";

.thumbnail-other {
  width: $thumbnail-other-size;
  height: $thumbnail-other-size;
  padding-top: $body-line-height * 1em;
  text-align: center;
  word-break: break-word;
  overflow: hidden;
  > div {
    min-height: $body-line-height * 3em;
  }
}

.preload {
  animation: preloadAnimation 1s infinite ease-in-out alternate;
}
@keyframes preloadAnimation {
  from {
    background-color: $content-bgcolor;
  }
  to {
    background-color: $loader-color;
  }
}
</style>