From d1d654ebac2d51e3841675faeb56480e440f622f Mon Sep 17 00:00:00 2001
From: Wolfgang Müller
Date: Tue, 5 Mar 2024 18:08:09 +0100
Subject: Initial commit

---
 frontend/src/lib/gallery/Gallery.svelte     | 42 +++++++++++++
 frontend/src/lib/gallery/GalleryPage.svelte | 93 +++++++++++++++++++++++++++++
 2 files changed, 135 insertions(+)
 create mode 100644 frontend/src/lib/gallery/Gallery.svelte
 create mode 100644 frontend/src/lib/gallery/GalleryPage.svelte

(limited to 'frontend/src/lib/gallery')

diff --git a/frontend/src/lib/gallery/Gallery.svelte b/frontend/src/lib/gallery/Gallery.svelte
new file mode 100644
index 0000000..c3b6386
--- /dev/null
+++ b/frontend/src/lib/gallery/Gallery.svelte
@@ -0,0 +1,42 @@
+<script lang="ts">
+	import type { PageFragment } from '$gql/graphql';
+	import GalleryPage from './GalleryPage.svelte';
+
+	export let pages: PageFragment[];
+</script>
+
+<div class="max-h-full gap-2 overflow-auto p-1 pr-3">
+	{#each pages as page, index}
+		<GalleryPage {page} {index} on:open on:cover />
+	{/each}
+</div>
+
+<style>
+	:root {
+		--gallery-image-size: 100px;
+	}
+
+	@media (min-width: 1280px) {
+		:root {
+			--gallery-image-size: 180px;
+		}
+	}
+
+	@media (min-width: 1600px) {
+		:root {
+			--gallery-image-size: 200px;
+		}
+	}
+
+	@media (min-width: 1920px) {
+		:root {
+			--gallery-image-size: 240px;
+		}
+	}
+
+	div {
+		display: grid;
+		grid-template-columns: repeat(auto-fill, minmax(var(--gallery-image-size), 1fr));
+		grid-auto-rows: fit-content(400px);
+	}
+</style>
diff --git a/frontend/src/lib/gallery/GalleryPage.svelte b/frontend/src/lib/gallery/GalleryPage.svelte
new file mode 100644
index 0000000..449321c
--- /dev/null
+++ b/frontend/src/lib/gallery/GalleryPage.svelte
@@ -0,0 +1,93 @@
+<script lang="ts">
+	import type { PageFragment } from '$gql/graphql';
+	import { getSelectionContext } from '$lib/Selection';
+	import SelectionOverlay from '$lib/selection/SelectionOverlay.svelte';
+	import { src } from '$lib/Utils';
+	import { createEventDispatcher } from 'svelte';
+
+	export let page: PageFragment;
+	export let index: number;
+
+	const selection = getSelectionContext<PageFragment>();
+
+	let span: 'single' | 'double' | 'triple';
+
+	$: page.image.aspectRatio, updateSpan();
+
+	function updateSpan() {
+		const aspectRatio = page.image.aspectRatio;
+
+		if (aspectRatio <= 1) {
+			span = 'single';
+		} else if (aspectRatio > 1 && aspectRatio <= 2) {
+			span = 'double';
+		} else if (aspectRatio > 2) {
+			span = 'triple';
+		}
+	}
+
+	const dispatch = createEventDispatcher<{ open: number; cover: number }>();
+
+	function press(event: MouseEvent | KeyboardEvent) {
+		if (event instanceof KeyboardEvent && event.key !== 'Enter') {
+			return;
+		}
+
+		if ($selection.active) {
+			if (event.ctrlKey) {
+				dispatch('open', index);
+			} else if (selectable) {
+				$selection = $selection.update(index, event.shiftKey);
+			}
+		} else if (event.ctrlKey) {
+			dispatch('cover', page.id);
+		} else {
+			dispatch('open', index);
+		}
+
+		event.preventDefault();
+	}
+
+	$: selectable = $selection.selectable(page);
+	$: dim = $selection.active && !selectable;
+	$: selected = $selection.contains(page.id);
+</script>
+
+<div
+	class:dim
+	role="button"
+	tabindex="0"
+	class="{span} relative overflow-hidden rounded"
+	on:click={press}
+	on:keydown={press}
+>
+	<SelectionOverlay position="top" {selected} />
+	<img
+		class="h-full w-full object-cover object-[center_top] transition-opacity"
+		loading="lazy"
+		alt=""
+		width={page.image.width}
+		height={page.image.height}
+		src={src(page.image)}
+		title={`${page.path} (${page.image.width} x ${page.image.height})`}
+	/>
+</div>
+
+<style>
+	.dim {
+		cursor: not-allowed;
+	}
+
+	.dim > img {
+		opacity: 0.2;
+		filter: grayscale(1);
+	}
+
+	.double {
+		grid-column: span 2;
+	}
+
+	.triple {
+		grid-column: span 3;
+	}
+</style>
-- 
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