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Preload profile pictures while scrolling
Changelog-Added: Preload profile pictures while scrolling
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@ -132,6 +132,9 @@ struct ImageCarousel: View {
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.imageFill(for: geo.size, max: maxHeight, fill: fillHeight) { fill in
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state.previews.cache_image_meta(evid: evid, image_fill: fill)
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// blur hash can be discarded when we have the url
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// NOTE: this is the wrong place for this... we need to remove
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// it when the image is loaded in memory. This may happen
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// earlier than this (by the preloader, etc)
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DispatchQueue.main.asyncAfter(deadline: .now() + 1.0) {
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state.events.lookup_img_metadata(url: url)?.state = .not_needed
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}
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@ -337,11 +337,32 @@ func get_preload_plan(cache: EventData, ev: NostrEvent, our_keypair: Keypair, se
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return PreloadPlan(data: cache, event: ev, load_artifacts: load_artifacts, load_translations: load_translations, load_preview: load_preview)
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}
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func preload_image(url: URL) {
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if ImageCache.default.isCached(forKey: url.absoluteString) {
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print("Preloaded image \(url.absoluteString) found in cache")
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// looks like we already have it cached. no download needed
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return
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}
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print("Preloading image \(url.absoluteString)")
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KingfisherManager.shared.retrieveImage(with: ImageResource(downloadURL: url)) { val in
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print("Preloaded image \(url.absoluteString)")
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}
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}
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func preload_event(plan: PreloadPlan, profiles: Profiles, our_keypair: Keypair, settings: UserSettingsStore) async {
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var artifacts: NoteArtifacts? = plan.data.artifacts.artifacts
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print("Preloading event \(plan.event.content)")
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// preload pfp
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if let profile = profiles.lookup(id: plan.event.pubkey),
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let picture = profile.picture,
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let url = URL(string: picture) {
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preload_image(url: url)
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}
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if artifacts == nil && plan.load_artifacts {
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let arts = render_note_content(ev: plan.event, profiles: profiles, privkey: our_keypair.privkey)
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artifacts = arts
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@ -352,10 +373,7 @@ func preload_event(plan: PreloadPlan, profiles: Profiles, our_keypair: Keypair,
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}
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for url in arts.images {
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print("Preloading image \(url.absoluteString)")
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KingfisherManager.shared.retrieveImage(with: ImageResource(downloadURL: url)) { val in
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print("Finished preloading image \(url.absoluteString)")
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}
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preload_image(url: url)
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}
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}
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