Viewer PDF.js mode livre avec signets, fix hydratation SSR
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- Viewer PDF.js mode livre : double page côte à côte, navigation prev/next visuelle et clavier
- Panneau signets (outline) avec tout déplier/replier, highlight du spread courant
- Page 1 = couverture seule, puis paires 2-3, 4-5, etc.
- Navigation clavier : flèches, espace, Home/End
- Redimensionnement auto des canvas au resize
- Fix hydratation SSR : bookData.init() sans await dans ChapterHeader et SongBadges
- BookPdfReader : iframe vers /pdfjs/viewer.html au lieu du viewer natif
- Script postinstall pour copier pdf.min.mjs depuis node_modules

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
This commit is contained in:
Yvv
2026-02-28 17:46:38 +01:00
parent 9525ed3953
commit 7ea19e2247
10 changed files with 874 additions and 13 deletions

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<!DOCTYPE html>
<html lang="fr">
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<title>PDF Viewer</title>
<style>
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html, body {
height: 100%;
overflow: hidden;
font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
background: #1a1a1a;
color: #e0e0e0;
}
.viewer-layout {
display: flex;
height: 100%;
}
/* Outline panel */
.outline-panel {
width: 260px;
min-width: 260px;
background: #111;
border-right: 1px solid #2a2a2a;
display: flex;
flex-direction: column;
overflow: hidden;
transition: width 0.25s, min-width 0.25s;
}
.outline-panel.collapsed {
width: 0;
min-width: 0;
border-right: none;
}
.outline-header {
display: flex;
align-items: center;
justify-content: space-between;
padding: 0.6rem 0.75rem;
border-bottom: 1px solid #2a2a2a;
flex-shrink: 0;
}
.outline-title {
font-size: 0.75rem;
font-weight: 600;
color: #888;
text-transform: uppercase;
letter-spacing: 0.05em;
}
.outline-actions { display: flex; gap: 0.25rem; }
.outline-btn {
background: none;
border: 1px solid #2a2a2a;
border-radius: 4px;
color: #777;
cursor: pointer;
padding: 0.2rem 0.4rem;
font-size: 0.65rem;
transition: all 0.15s;
}
.outline-btn:hover { border-color: #555; color: #ccc; }
.outline-tree {
flex: 1;
overflow-y: auto;
padding: 0.4rem;
}
.outline-tree::-webkit-scrollbar { width: 4px; }
.outline-tree::-webkit-scrollbar-thumb { background: #333; border-radius: 2px; }
.outline-node { user-select: none; }
.outline-item {
display: flex;
align-items: flex-start;
gap: 0.2rem;
padding: 0.3rem 0.4rem;
border-radius: 4px;
cursor: pointer;
color: #aaa;
font-size: 0.75rem;
line-height: 1.3;
transition: background 0.1s;
}
.outline-item:hover { background: #1e1e1e; color: #fff; }
.outline-item.active { background: #1a1207; color: #e8a040; }
.outline-item .toggle {
flex-shrink: 0;
width: 14px; height: 14px;
display: flex; align-items: center; justify-content: center;
font-size: 0.6rem; color: #555; cursor: pointer;
transition: transform 0.15s; margin-top: 1px;
}
.outline-item .toggle.open { transform: rotate(90deg); }
.outline-item .toggle.empty { visibility: hidden; }
.outline-item .label { flex: 1; min-width: 0; }
.outline-children { padding-left: 0.85rem; overflow: hidden; }
.outline-children.hidden { display: none; }
.outline-empty {
padding: 1.5rem 1rem;
text-align: center;
color: #444;
font-size: 0.8rem;
}
/* Main area */
.main-area {
flex: 1;
display: flex;
flex-direction: column;
overflow: hidden;
}
/* Book spread */
.book-spread {
flex: 1;
display: flex;
align-items: center;
justify-content: center;
gap: 2px;
padding: 1rem;
background: #2a2a2a;
overflow: hidden;
position: relative;
}
.book-spread canvas {
box-shadow: 0 4px 24px rgba(0,0,0,0.5);
background: white;
display: block;
}
.page-slot {
display: flex;
align-items: center;
justify-content: center;
max-height: 100%;
}
.page-slot.empty {
visibility: hidden;
}
/* Navigation bar */
.nav-bar {
display: flex;
align-items: center;
justify-content: center;
gap: 1rem;
padding: 0.6rem 1rem;
background: #141414;
border-top: 1px solid #2a2a2a;
flex-shrink: 0;
}
.nav-btn {
background: #1e1e1e;
border: 1px solid #333;
border-radius: 6px;
color: #aaa;
cursor: pointer;
padding: 0.4rem 0.8rem;
font-size: 0.85rem;
transition: all 0.15s;
display: flex;
align-items: center;
gap: 0.3rem;
}
.nav-btn:hover:not(:disabled) { background: #2a2a2a; color: #fff; border-color: #555; }
.nav-btn:disabled { opacity: 0.25; cursor: default; }
.nav-info {
font-size: 0.75rem;
color: #777;
font-variant-numeric: tabular-nums;
min-width: 6rem;
text-align: center;
}
.sidebar-btn {
position: absolute;
left: 0; top: 0; bottom: 0;
width: 2rem;
background: transparent;
border: none;
color: #555;
cursor: pointer;
font-size: 1rem;
transition: all 0.15s;
z-index: 5;
}
.sidebar-btn:hover { background: rgba(255,255,255,0.03); color: #aaa; }
.sidebar-btn.hidden { display: none; }
/* Loading */
.loading {
display: flex;
align-items: center;
justify-content: center;
height: 100%;
color: #555;
font-size: 0.9rem;
}
@media (max-width: 768px) {
.outline-panel { width: 200px; min-width: 200px; }
.book-spread { padding: 0.5rem; }
}
@media (max-width: 480px) {
.outline-panel { position: absolute; z-index: 20; height: 100%; }
.outline-panel.collapsed { display: none; }
}
</style>
</head>
<body>
<div class="viewer-layout">
<div class="outline-panel" id="outlinePanel">
<div class="outline-header">
<span class="outline-title">Sommaire</span>
<div class="outline-actions">
<button class="outline-btn" onclick="expandAll()">Déplier</button>
<button class="outline-btn" onclick="collapseAll()">Replier</button>
<button class="outline-btn" onclick="toggleSidebar()">&#10005;</button>
</div>
</div>
<div class="outline-tree" id="outlineTree">
<div class="loading">Chargement…</div>
</div>
</div>
<div class="main-area">
<div class="book-spread" id="bookSpread">
<button class="sidebar-btn hidden" id="sidebarBtn" onclick="toggleSidebar()">&#9776;</button>
<div class="loading" id="loadingMsg">Chargement du PDF…</div>
<div class="page-slot" id="slotLeft"></div>
<div class="page-slot" id="slotRight"></div>
</div>
<div class="nav-bar">
<button class="nav-btn" id="prevBtn" onclick="prevSpread()" disabled>&#9664; Précédent</button>
<span class="nav-info" id="pageInfo"></span>
<button class="nav-btn" id="nextBtn" onclick="nextSpread()" disabled>Suivant &#9654;</button>
</div>
</div>
</div>
<script type="module">
import * as pdfjsLib from '/pdfjs/pdf.min.mjs';
pdfjsLib.GlobalWorkerOptions.workerSrc = '/pdfjs/pdf.worker.min.mjs';
const params = new URLSearchParams(location.search);
const hash = location.hash.slice(1);
const hashParams = new URLSearchParams(hash);
const fileUrl = params.get('file') || '/pdf/une-economie-du-don.pdf';
const targetPage = parseInt(hashParams.get('page') || params.get('page') || '1', 10);
let pdfDoc = null;
let currentSpread = 0; // index into spreads[]
let spreads = []; // [[1], [2,3], [4,5], ...] — page 1 alone (cover), then pairs
let pageCanvasCache = new Map();
let outlinePageMap = []; // [{item, pageNum}] for highlighting
function buildSpreads(numPages) {
spreads = [];
// Page 1 = couverture seule
spreads.push([1]);
// Ensuite par paires : 2-3, 4-5, etc.
for (let i = 2; i <= numPages; i += 2) {
if (i + 1 <= numPages) {
spreads.push([i, i + 1]);
} else {
spreads.push([i]);
}
}
}
function getSpreadForPage(pageNum) {
return spreads.findIndex(s => s.includes(pageNum));
}
async function renderPageCanvas(pageNum) {
if (pageCanvasCache.has(pageNum)) return pageCanvasCache.get(pageNum);
const page = await pdfDoc.getPage(pageNum);
const spread = document.getElementById('bookSpread');
const availH = spread.clientHeight - 32;
const availW = (spread.clientWidth - 40) / 2;
const rawViewport = page.getViewport({ scale: 1 });
const scaleH = availH / rawViewport.height;
const scaleW = availW / rawViewport.width;
const scale = Math.min(scaleH, scaleW, 2.5);
const viewport = page.getViewport({ scale });
const canvas = document.createElement('canvas');
canvas.width = viewport.width;
canvas.height = viewport.height;
canvas.dataset.page = pageNum;
const ctx = canvas.getContext('2d');
await page.render({ canvasContext: ctx, viewport }).promise;
pageCanvasCache.set(pageNum, canvas);
return canvas;
}
async function showSpread(index) {
if (index < 0 || index >= spreads.length) return;
currentSpread = index;
const pages = spreads[index];
const slotLeft = document.getElementById('slotLeft');
const slotRight = document.getElementById('slotRight');
slotLeft.innerHTML = '';
slotRight.innerHTML = '';
slotLeft.className = 'page-slot';
slotRight.className = 'page-slot';
if (pages.length === 1) {
// Single page (cover or last odd page) — centered
const canvas = await renderPageCanvas(pages[0]);
slotLeft.appendChild(canvas);
slotRight.className = 'page-slot empty';
} else {
const [left, right] = await Promise.all([
renderPageCanvas(pages[0]),
renderPageCanvas(pages[1]),
]);
slotLeft.appendChild(left);
slotRight.appendChild(right);
}
updateNav();
highlightOutline();
}
function updateNav() {
const pages = spreads[currentSpread];
const info = document.getElementById('pageInfo');
const prevBtn = document.getElementById('prevBtn');
const nextBtn = document.getElementById('nextBtn');
if (pages.length === 1) {
info.textContent = `Page ${pages[0]} / ${pdfDoc.numPages}`;
} else {
info.textContent = `Pages ${pages[0]}${pages[1]} / ${pdfDoc.numPages}`;
}
prevBtn.disabled = currentSpread <= 0;
nextBtn.disabled = currentSpread >= spreads.length - 1;
}
function prevSpread() { showSpread(currentSpread - 1); }
function nextSpread() { showSpread(currentSpread + 1); }
function goToPage(pageNum) {
const idx = getSpreadForPage(pageNum);
if (idx >= 0) showSpread(idx);
}
// Keyboard navigation
document.addEventListener('keydown', (e) => {
if (e.key === 'ArrowLeft' || e.key === 'ArrowUp') {
e.preventDefault();
prevSpread();
} else if (e.key === 'ArrowRight' || e.key === 'ArrowDown' || e.key === ' ') {
e.preventDefault();
nextSpread();
} else if (e.key === 'Home') {
e.preventDefault();
showSpread(0);
} else if (e.key === 'End') {
e.preventDefault();
showSpread(spreads.length - 1);
}
});
// Resize handling
let resizeTimer;
window.addEventListener('resize', () => {
clearTimeout(resizeTimer);
resizeTimer = setTimeout(() => {
pageCanvasCache.clear();
showSpread(currentSpread);
}, 200);
});
// Outline
async function renderOutline() {
const outlineTree = document.getElementById('outlineTree');
const outline = await pdfDoc.getOutline();
if (!outline || outline.length === 0) {
outlineTree.innerHTML = '<div class="outline-empty">Aucun signet dans ce PDF</div>';
return;
}
outlineTree.innerHTML = '';
outlinePageMap = [];
const tree = await buildOutlineTree(outline);
outlineTree.appendChild(tree);
}
async function buildOutlineTree(items) {
const frag = document.createDocumentFragment();
for (const item of items) {
const node = document.createElement('div');
node.className = 'outline-node';
const row = document.createElement('div');
row.className = 'outline-item';
// Resolve page number for this item
let pageNum = null;
try {
let dest = item.dest;
if (typeof dest === 'string') dest = await pdfDoc.getDestination(dest);
if (dest) {
const ref = dest[0];
pageNum = (await pdfDoc.getPageIndex(ref)) + 1;
}
} catch {}
const toggle = document.createElement('span');
toggle.className = 'toggle' + (item.items && item.items.length > 0 ? ' open' : ' empty');
toggle.textContent = '▶';
if (item.items && item.items.length > 0) {
toggle.addEventListener('click', (e) => {
e.stopPropagation();
const children = node.querySelector('.outline-children');
if (children) {
const isHidden = children.classList.toggle('hidden');
toggle.classList.toggle('open', !isHidden);
}
});
}
row.appendChild(toggle);
const label = document.createElement('span');
label.className = 'label';
label.textContent = item.title;
row.appendChild(label);
if (pageNum !== null) {
const pg = pageNum;
row.addEventListener('click', () => goToPage(pg));
outlinePageMap.push({ row, pageNum: pg });
}
node.appendChild(row);
if (item.items && item.items.length > 0) {
const children = document.createElement('div');
children.className = 'outline-children';
children.appendChild(await buildOutlineTree(item.items));
node.appendChild(children);
}
frag.appendChild(node);
}
return frag;
}
function highlightOutline() {
const pages = spreads[currentSpread];
for (const { row, pageNum } of outlinePageMap) {
row.classList.toggle('active', pages.includes(pageNum));
}
}
// Load
async function init() {
const loadingTask = pdfjsLib.getDocument(fileUrl);
pdfDoc = await loadingTask.promise;
buildSpreads(pdfDoc.numPages);
await renderOutline();
document.getElementById('loadingMsg').remove();
const startSpread = getSpreadForPage(targetPage);
await showSpread(startSpread >= 0 ? startSpread : 0);
}
init().catch(err => {
document.getElementById('loadingMsg').textContent = `Erreur : ${err.message}`;
document.getElementById('loadingMsg').style.color = '#c44';
console.error(err);
});
// Expose globals
window.prevSpread = prevSpread;
window.nextSpread = nextSpread;
window.expandAll = function() {
const tree = document.getElementById('outlineTree');
tree.querySelectorAll('.outline-children.hidden').forEach(el => el.classList.remove('hidden'));
tree.querySelectorAll('.toggle:not(.empty)').forEach(el => el.classList.add('open'));
};
window.collapseAll = function() {
const tree = document.getElementById('outlineTree');
tree.querySelectorAll('.outline-children').forEach(el => el.classList.add('hidden'));
tree.querySelectorAll('.toggle:not(.empty)').forEach(el => el.classList.remove('open'));
};
window.toggleSidebar = function() {
const panel = document.getElementById('outlinePanel');
const btn = document.getElementById('sidebarBtn');
panel.classList.toggle('collapsed');
btn.classList.toggle('hidden', !panel.classList.contains('collapsed'));
// Recalc on sidebar toggle
setTimeout(() => {
pageCanvasCache.clear();
showSpread(currentSpread);
}, 300);
};
</script>
</body>
</html>