8a769b52bf
A fullscreen auto-advancing slideshow any user can start. Design:
docs/CONCEPT_DIASHOW.md.
- lib/diashow/queue.ts: SlideQueue state machine — liveQueue drains first
(FIFO, seeded by SSE upload-processed), then shuffleQueue (refilled
from allKnown minus a 5-id ring buffer of recently shown). Pure logic,
unit-testable.
- lib/diashow/wakelock.ts: Screen Wake Lock wrapper that re-acquires on
visibility change (the OS drops the lock when the tab hides).
- lib/diashow/transitions/{index,crossfade,kenburns}.ts: registry +
the v1 transitions. Adding a new animation is one file + one entry —
the extensibility target from docs/FEATURES §2.9.
- routes/diashow/+page.svelte: fullscreen page, hides bottom nav,
6 s default dwell (3/6/10 configurable), keyboard shortcuts
(Escape exits, Space toggles pause), tap-to-reveal overlay with
pause / dwell / transition / exit. Respects $dataMode to choose
preview vs. original URL.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
52 lines
1.2 KiB
Svelte
52 lines
1.2 KiB
Svelte
<script lang="ts">
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// Crossfade + slow zoom and pan (the "Ken Burns" effect). Image-only — videos
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// fall back to the crossfade behaviour to avoid double-animation.
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interface Props {
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src: string;
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isVideo: boolean;
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durationMs: number;
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}
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let { src, isVideo, durationMs }: Props = $props();
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// Mild random pan so each slide feels different. Range chosen so the image never
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// pans out of frame given the object-fit: cover.
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const panX = Math.round((Math.random() - 0.5) * 6); // -3% .. +3%
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const panY = Math.round((Math.random() - 0.5) * 6);
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</script>
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<div
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class="absolute inset-0 flex items-center justify-center overflow-hidden bg-black"
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style="animation: kb-fade {durationMs}ms ease-out forwards;"
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>
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{#if isVideo}
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<!-- svelte-ignore a11y_media_has_caption -->
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<video
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{src}
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autoplay
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muted
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playsinline
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class="h-full w-full object-contain"
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></video>
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{:else}
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<img
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{src}
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alt=""
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class="h-full w-full object-cover"
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style="animation: kb-zoom 10s ease-out forwards; transform-origin: {50 + panX}% {50 + panY}%;"
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/>
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{/if}
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</div>
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<style>
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@keyframes kb-fade {
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from { opacity: 0; }
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to { opacity: 1; }
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}
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@keyframes kb-zoom {
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from { transform: scale(1.0); }
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to { transform: scale(1.1); }
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}
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</style>
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