feat(feed): improving the image viewer, to be more conventional, and also allowing the viewer to download the image on mobile with `...` control

src/components/ImageViewer.vue

@@ -3,38 +3,84 @@
     <Transition name="fade">
       <div
         v-if="isOpen"
-        class="fixed inset-0 z-50 flex items-center justify-center bg-black/90"
+        class="fixed inset-0 z-50 flex flex-col bg-black/90"
-        @click="close"
       >
+        <!-- Header bar - fixed height to prevent overlap -->
+        <div class="h-16 flex justify-between items-center px-4 bg-black">
           <button
-          class="absolute top-4 right-4 text-white text-2xl p-2 rounded-full hover:bg-white/10"
+            class="text-white text-2xl p-2 rounded-full hover:bg-white/10"
             @click="close"
           >
             <fa icon="xmark" />
           </button>
 
+          <!-- Mobile share button -->
+          <button
+            v-if="isMobile"
+            class="text-white text-xl p-2 rounded-full hover:bg-white/10"
+            @click="handleShare"
+          >
+            <fa icon="ellipsis" />
+          </button>
+        </div>
+
+        <!-- Image container - fill remaining space -->
+        <div class="flex-1 flex items-center justify-center p-2">
+          <div class="w-full h-full flex items-center justify-center">
             <img
               :src="imageUrl"
-          class="max-h-screen max-w-screen-md w-full object-contain p-4"
+              class="max-h-[calc(100vh-5rem)] w-full h-full object-contain"
               @click.stop
               alt="expanded shared content"
             />
           </div>
+        </div>
+      </div>
     </Transition>
   </Teleport>
 </template>
 
 <script lang="ts">
 import { Component, Vue, Prop } from "vue-facing-decorator";
+import { UAParser } from "ua-parser-js";
 
-@Component
+@Component({ emits: ["update:isOpen"] })
 export default class ImageViewer extends Vue {
   @Prop() imageUrl!: string;
+  @Prop() imageData!: Blob | null;
   @Prop() isOpen!: boolean;
 
+  userAgent = new UAParser();
+
+  get isMobile() {
+    const os = this.userAgent.getOS().name;
+    return os === "iOS" || os === "Android";
+  }
+
   close() {
     this.$emit("update:isOpen", false);
   }
+
+  async handleShare() {
+    const os = this.userAgent.getOS().name;
+
+    try {
+      if (os === "iOS" || os === "Android") {
+        if (navigator.share) {
+          // Always share the URL since it's more reliable across platforms
+          await navigator.share({
+            url: this.imageUrl
+          });
+        } else {
+          // Fallback for browsers without share API
+          window.open(this.imageUrl, "_blank");
+        }
+      }
+    } catch (error) {
+      console.warn("Share failed, opening in new tab:", error);
+      window.open(this.imageUrl, "_blank");
+    }
+  }
 }
 </script>
 

src/views/HomeView.vue

@@ -355,6 +355,7 @@
                   :src="record.image"
                   class="w-full aspect-[3/2] object-cover rounded-xl mt-2"
                   alt="shared content"
+                  @load="cacheImageData($event, record.image)"
                 />
               </div>
             </div>
@@ -376,7 +377,11 @@
 
   <ChoiceButtonDialog ref="choiceButtonDialog" />
 
-  <ImageViewer :image-url="selectedImage" v-model:is-open="isImageViewerOpen" />
+  <ImageViewer
+    :image-url="selectedImage"
+    :image-data="selectedImageData"
+    v-model:is-open="isImageViewerOpen"
+  />
 </template>
 
 <script lang="ts">
@@ -501,7 +506,9 @@ export default class HomeView extends Vue {
   showShortcutBvc = false;
   userAgentInfo = new UAParser(); // see https://docs.uaparser.js.org/v2/api/ua-parser-js/get-os.html
   selectedImage = "";
+  selectedImageData: Blob | null = null;
   isImageViewerOpen = false;
+  imageCache: Map<string, Blob | null> = new Map();
 
   async mounted() {
     try {
@@ -984,7 +991,18 @@ export default class HomeView extends Vue {
     });
   }
 
-  openImageViewer(imageUrl: string) {
+  async cacheImageData(event: Event, imageUrl: string) {
+    try {
+      // For images that might fail CORS, just store the URL
+      // The Web Share API will handle sharing the URL appropriately
+      this.imageCache.set(imageUrl, null);
+    } catch (error) {
+      console.warn("Failed to cache image:", error);
+    }
+  }
+
+  async openImageViewer(imageUrl: string) {
+    this.selectedImageData = this.imageCache.get(imageUrl) ?? null;
     this.selectedImage = imageUrl;
     this.isImageViewerOpen = true;
   }