Introduce static skeleton cards

client/components/app/LazyBookshelf.vue

@@ -2,6 +2,10 @@
   <div id="bookshelf" ref="bookshelf" class="w-full overflow-y-auto" :style="{ fontSize: sizeMultiplier + 'rem' }">
     <template v-for="shelf in totalShelves">
       <div :key="shelf" :id="`shelf-${shelf - 1}`" class="w-full px-4e sm:px-8e relative" :class="{ bookshelfRow: !isAlternativeBookshelfView }" :style="{ height: shelfHeight + 'px' }">
+        <!-- Card skeletons -->
+        <template v-for="entityIndex in entitiesInShelf(shelf)">
+          <div :key="entityIndex" class="w-full h-full absolute rounded z-5 top-0 left-0 bg-primary" :style="{ transform: entityTransform(entityIndex), width: cardWidth + 'px', height: coverHeight + 'px' }" />
+        </template>
         <div v-if="!isAlternativeBookshelfView" class="bookshelfDivider w-full absolute bottom-0 left-0 right-0 z-20 h-6e" />
       </div>
     </template>
@@ -65,6 +69,7 @@ export default {
       tempIsScanning: false,
       cardWidth: 0,
       cardHeight: 0,
+      coverHeight: 0,
       resizeObserver: null,
       lastScrollTop: 0,
       lastTimestamp: 0,
@@ -833,6 +838,14 @@ export default {
         .finally(() => {
           this.tempIsScanning = false
         })
+    },
+    entitiesInShelf(shelf) {
+      return shelf == this.totalShelves ? this.totalEntities % this.entitiesPerShelf : this.entitiesPerShelf
+    },
+    entityTransform(entityIndex) {
+      const shelfOffsetY = this.shelfPaddingHeight * this.sizeMultiplier
+      const shelfOffsetX = (entityIndex - 1) * this.totalEntityCardWidth + this.bookshelfMarginLeft
+      return `translate3d(${shelfOffsetX}px, ${shelfOffsetY}px, 0px)`
     }
   },
   async mounted() {

client/components/cards/AuthorCard.vue

@@ -68,6 +68,9 @@ export default {
     cardHeight() {
       return this.height * this.sizeMultiplier
     },
+    coverHeight() {
+      return this.cardHeight
+    },
     userToken() {
       return this.store.getters['user/getToken']
     },

client/components/cards/LazyBookCard.vue

@@ -19,7 +19,7 @@
         </div>
 
         <!-- Cover Image -->
-        <img cy-id="coverImage" v-show="libraryItem" ref="cover" :src="bookCoverSrc" class="relative w-full h-full transition-opacity duration-300" :class="showCoverBg ? 'object-contain' : 'object-fill'" @load="imageLoaded" :style="{ opacity: imageReady ? 1 : 0 }" />
+        <img cy-id="coverImage" v-if="libraryItem" ref="cover" :src="bookCoverSrc" class="relative w-full h-full transition-opacity duration-300" :class="showCoverBg ? 'object-contain' : 'object-fill'" @load="imageLoaded" :style="{ opacity: imageReady ? 1 : 0 }" />
 
         <!-- Placeholder Cover Title & Author -->
         <div cy-id="placeholderTitle" v-if="!hasCover" class="absolute top-0 left-0 right-0 bottom-0 w-full h-full flex items-center justify-center" :style="{ padding: placeholderCoverPadding + 'em' }">

client/mixins/bookshelfCardsHelpers.js

@@ -57,9 +57,10 @@ export default {
         for (let entry of entries) {
           this.cardWidth = entry.borderBoxSize[0].inlineSize
           this.cardHeight = entry.borderBoxSize[0].blockSize
-          this.resizeObserver.disconnect()
-          this.$refs.bookshelf.removeChild(instance.$el)
         }
+        this.coverHeight = instance.coverHeight
+        this.resizeObserver.disconnect()
+        this.$refs.bookshelf.removeChild(instance.$el)
       })
       instance.$el.style.visibility = 'hidden'
       instance.$el.style.position = 'absolute'