feat: improve asset-viewer next/prev perf and standardize preloading behavior (#24422)

Co-authored-by: Alex <alex.tran1502@gmail.com>
2026-05-23 08:02:29 -04:00 · 2026-01-07 15:17:12 -05:00
parent 81f269e2a9
commit 78229baeab
24 changed files with 529 additions and 433 deletions
@@ -0,0 +1,38 @@
+import { getAssetUrl } from '$lib/utils';
+import { cancelImageUrl, preloadImageUrl } from '$lib/utils/sw-messaging';
+import { AssetTypeEnum, type AssetResponseDto } from '@immich/sdk';
+
+class PreloadManager {
+  preload(asset: AssetResponseDto | undefined) {
+    if (globalThis.isSecureContext) {
+      preloadImageUrl(getAssetUrl({ asset }));
+      return;
+    }
+    if (!asset || asset.type !== AssetTypeEnum.Image) {
+      return;
+    }
+    const img = new Image();
+    const url = getAssetUrl({ asset });
+    if (!url) {
+      return;
+    }
+    img.src = url;
+  }
+
+  cancel(asset: AssetResponseDto | undefined) {
+    if (!globalThis.isSecureContext || !asset) {
+      return;
+    }
+    const url = getAssetUrl({ asset });
+    cancelImageUrl(url);
+  }
+
+  cancelPreloadUrl(url: string | undefined) {
+    if (!globalThis.isSecureContext) {
+      return;
+    }
+    cancelImageUrl(url);
+  }
+}
+
+export const preloadManager = new PreloadManager();