v1.1.4
This commit is contained in:
Lyz Coote
290
frontend/src/routes/image/+page.svelte
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290
frontend/src/routes/image/+page.svelte
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<script lang="ts">
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import { onMount } from "svelte";
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import type { PageData } from './$types';
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import {
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RotateCcw,
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RotateCw,
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ZoomIn,
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ZoomOut,
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AlignHorizontalSpaceAround,
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} from "@lucide/svelte";
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import { sidebarOpen } from "$lib/stores/app";
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import { toast } from "svelte-sonner";
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let { data }: { data: PageData } = $props();
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let imageData = $state("");
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let filename = $state("");
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let rotation = $state(0);
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let scale = $state(1);
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let error = $state("");
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let loading = $state(true);
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let translateX = $state(0);
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let translateY = $state(0);
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let imgElement = $state<HTMLImageElement>();
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let containerElement = $state<HTMLDivElement>();
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// Non-reactive state for drag calculations
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let isDragging = false;
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let startX = 0;
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let startY = 0;
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onMount(async () => {
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try {
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const result = data?.data
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if (result) {
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imageData = result.data;
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filename = result.filename;
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// Adjust title
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document.title = filename + " - EMLy Image Viewer";
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sidebarOpen.set(false);
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} else {
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toast.error("No image data provided");
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error = "No image data provided";
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}
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} catch (e) {
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error = "Failed to load image: " + e;
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} finally {
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loading = false;
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}
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});
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function fitToScreen() {
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if (!imgElement || !containerElement) return;
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const padding = 60;
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const cw = containerElement.clientWidth - padding;
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const ch = containerElement.clientHeight - padding;
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const iw = imgElement.naturalWidth;
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const ih = imgElement.naturalHeight;
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if (!iw || !ih || !cw || !ch) return;
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const scaleW = cw / iw;
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const scaleH = ch / ih;
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scale = Math.min(scaleW, scaleH);
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// Ensure we don't end up with an invalid scale
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if (!Number.isFinite(scale) || scale <= 0) scale = 0.1;
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translateX = 0;
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translateY = 0;
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}
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function rotate(deg: number) {
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rotation += deg;
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}
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function zoom(factor: number) {
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scale = Math.max(0.01, scale + factor);
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}
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function reset() {
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rotation = 0;
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fitToScreen();
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}
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function handleWheel(e: WheelEvent) {
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e.preventDefault();
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const delta = -e.deltaY * 0.001;
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scale = Math.max(0.01, Math.min(50, scale + delta));
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}
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function handleMouseDown(e: MouseEvent) {
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if (e.button !== 0) return; // Only left click
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e.preventDefault();
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isDragging = true;
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startX = e.clientX - translateX;
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startY = e.clientY - translateY;
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}
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function handleMouseMove(e: MouseEvent) {
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if (!isDragging) return;
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e.preventDefault();
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translateX = e.clientX - startX;
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translateY = e.clientY - startY;
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}
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function handleMouseUp() {
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isDragging = false;
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}
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</script>
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<div class="page-container">
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<!-- Toolbar -->
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<div class="toolbar">
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<h1 class="title" title={filename}>{filename || "Image Viewer"}</h1>
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<div class="controls">
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<button class="btn" onclick={() => zoom(0.1)} title="Zoom In">
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<ZoomIn size="16" />
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</button>
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<button class="btn" onclick={() => zoom(-0.1)} title="Zoom Out">
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<ZoomOut size="16" />
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</button>
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<div class="separator"></div>
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<button class="btn" onclick={() => rotate(-90)} title="Rotate Left">
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<RotateCcw size="16" />
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</button>
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<button class="btn" onclick={() => rotate(90)} title="Rotate Right">
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<RotateCw size="16" />
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</button>
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<div class="separator"></div>
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<button class="btn" onclick={reset} title="Reset">
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<AlignHorizontalSpaceAround size="16" />
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</button>
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</div>
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</div>
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<!-- Image Area -->
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<!-- svelte-ignore a11y_no_noninteractive_element_interactions -->
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<div
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bind:this={containerElement}
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class="image-area"
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onwheel={handleWheel}
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onmousedown={handleMouseDown}
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onmousemove={handleMouseMove}
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onmouseup={handleMouseUp}
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onmouseleave={handleMouseUp}
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role="region"
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aria-label="Image View"
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>
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{#if loading}
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<div class="loading">Loading...</div>
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{:else if error}
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<div class="error-message">
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{error}
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</div>
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{:else if imageData}
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<div
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class="transform-layer"
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style="transform: translate({translateX}px, {translateY}px) scale({scale}) rotate({rotation}deg);"
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>
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<!-- svelte-ignore a11y_img_redundant_alt -->
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<img
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bind:this={imgElement}
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onload={fitToScreen}
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src={`data:image/png;base64,${imageData}`}
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alt={filename}
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class="viewer-img"
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draggable="false"
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/>
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</div>
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{/if}
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</div>
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</div>
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<style>
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:global(body) {
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margin: 0;
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background: #000;
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}
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.page-container {
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height: 100vh;
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display: flex;
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flex-direction: column;
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overflow: hidden;
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background: #000;
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color: white;
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font-family: system-ui, -apple-system, sans-serif;
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}
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.toolbar {
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height: 50px;
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background: rgba(255, 255, 255, 0.04);
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border-bottom: 1px solid rgba(255, 255, 255, 0.08);
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display: flex;
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align-items: center;
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justify-content: space-between;
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padding: 0 16px;
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flex-shrink: 0;
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z-index: 10;
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}
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.title {
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font-size: 14px;
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font-weight: 500;
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opacity: 0.9;
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white-space: nowrap;
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overflow: hidden;
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text-overflow: ellipsis;
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max-width: 50%;
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}
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.controls {
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display: flex;
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align-items: center;
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gap: 6px;
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}
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.separator {
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width: 1px;
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height: 18px;
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background: rgba(255, 255, 255, 0.15);
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margin: 0 4px;
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}
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.btn {
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display: inline-flex;
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align-items: center;
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justify-content: center;
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width: 32px;
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height: 32px;
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padding: 0;
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border-radius: 8px;
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border: 1px solid rgba(255, 255, 255, 0.12);
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background: rgba(255, 255, 255, 0.06);
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color: rgba(255, 255, 255, 0.85);
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cursor: pointer;
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transition: all 0.2s;
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}
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.btn:hover {
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background: rgba(255, 255, 255, 0.12);
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color: #fff;
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}
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.image-area {
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flex: 1;
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background: rgba(0, 0, 0, 0.5);
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position: relative;
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overflow: hidden;
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display: flex;
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align-items: center;
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justify-content: center;
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cursor: grab;
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}
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.image-area:active {
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cursor: grabbing;
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}
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.transform-layer {
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transition: transform 0.05s linear;
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transform-origin: center center;
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will-change: transform;
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display: flex; /* Ensures content centers */
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}
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.viewer-img {
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max-width: none;
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pointer-events: none;
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box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
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border-radius: 2px;
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}
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.loading {
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color: rgba(255, 255, 255, 0.5);
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font-size: 14px;
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}
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.error-message {
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color: #f87171;
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background: rgba(248, 113, 113, 0.1);
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padding: 12px 16px;
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border-radius: 8px;
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border: 1px solid rgba(248, 113, 113, 0.2);
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font-size: 14px;
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}
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</style>
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