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1349 lines (1267 loc) · 71.3 KB
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<!doctype html>
<html lang="ko">
<head>
<meta charset="utf-8">
<script>
// GitHub 페이지(옛 주소)로 온 방문자만 새 주소로 보낸다. 책갈피 사이트 사본도 이 파일을 쓰므로 조건을 빼면 무한 이동.
if (location.hostname.endsWith('github.io')) location.replace('https://chaekgalpi.co.kr/apps/spreadsplit/' + location.search + location.hash);
</script>
<link rel="canonical" href="https://chaekgalpi.co.kr/apps/spreadsplit/">
<meta name="viewport" content="width=device-width, initial-scale=1">
<title>펼침면 나누기</title>
<meta name="description" content="두 쪽이 한 장에 담긴 스캔 PDF를 왼쪽·오른쪽 쪽으로 나누는 브라우저 도구. Split two-page scanned PDF spreads in your browser.">
<link rel="icon" href="data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 32 32'%3E%3Crect x='3' y='7' width='12' height='18' rx='2' fill='%231d1d1b'/%3E%3Crect x='17' y='7' width='12' height='18' rx='2' fill='%231d1d1b'/%3E%3Crect x='15.25' y='3' width='1.5' height='26' rx='.75' fill='%23e5484d'/%3E%3C/svg%3E">
<link rel="stylesheet" href="https://cdn.jsdelivr.net/gh/orioncactus/[email protected]/dist/web/variable/pretendardvariable-dynamic-subset.min.css">
<style>
:root {
--bg: #f5f4f0;
--surface: #ffffff;
--surface-2: #efede7;
--ink: #1d1d1b;
--ink-2: #4a4944;
--muted: #8a8880;
--line: #e4e1d9;
--line-strong: #d2cec3;
--primary: #1d1d1b;
--primary-ink: #ffffff;
--accent: #e5484d;
--accent-soft: rgba(229, 72, 77, .16);
--cut: rgba(29, 29, 27, .55);
--ok: #2b8a57;
--shadow: 0 1px 2px rgba(30, 28, 20, .05), 0 6px 20px rgba(30, 28, 20, .06);
--radius: 14px;
color-scheme: light;
}
@media (prefers-color-scheme: dark) {
:root:not([data-theme="light"]) {
--bg: #131312; --surface: #1c1c1a; --surface-2: #252522; --ink: #ededea; --ink-2: #c4c2ba;
--muted: #8f8d86; --line: #2f2e2b; --line-strong: #403f3a; --primary: #ededea; --primary-ink: #151514;
--accent: #ff6369; --accent-soft: rgba(255, 99, 105, .2); --cut: rgba(0, 0, 0, .6); --ok: #4cc38a;
--shadow: 0 1px 2px rgba(0, 0, 0, .3), 0 6px 20px rgba(0, 0, 0, .25);
color-scheme: dark;
}
}
:root[data-theme="dark"] {
--bg: #131312; --surface: #1c1c1a; --surface-2: #252522; --ink: #ededea; --ink-2: #c4c2ba;
--muted: #8f8d86; --line: #2f2e2b; --line-strong: #403f3a; --primary: #ededea; --primary-ink: #151514;
--accent: #ff6369; --accent-soft: rgba(255, 99, 105, .2); --cut: rgba(0, 0, 0, .6); --ok: #4cc38a;
--shadow: 0 1px 2px rgba(0, 0, 0, .3), 0 6px 20px rgba(0, 0, 0, .25);
color-scheme: dark;
}
* { box-sizing: border-box; }
html, body { margin: 0; }
body {
background: var(--bg);
color: var(--ink);
font: 15px/1.55 "Pretendard Variable", Pretendard, -apple-system, "Segoe UI", "Malgun Gothic", sans-serif;
-webkit-font-smoothing: antialiased;
min-height: 100vh;
}
html[lang="ja"] body { font-family: "Pretendard Variable", Pretendard, -apple-system, "Segoe UI", "Hiragino Sans", "Yu Gothic UI", Meiryo, sans-serif; }
html[lang="zh"] body { font-family: "Pretendard Variable", Pretendard, -apple-system, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif; }
button, input, select { font: inherit; color: inherit; }
button { cursor: pointer; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
[hidden] { display: none !important; }
/* ── top bar ── */
.topbar {
position: sticky; top: 0; z-index: 20;
display: flex; align-items: center; gap: 10px;
padding: 14px 24px;
background: color-mix(in srgb, var(--bg) 88%, transparent);
backdrop-filter: blur(10px);
border-bottom: 1px solid var(--line);
}
.brand { display: flex; align-items: center; gap: 10px; font-weight: 700; letter-spacing: -.01em; white-space: nowrap; }
.brand svg { width: 26px; height: 26px; flex: none; }
.brand small { font-weight: 500; color: var(--muted); margin-left: 2px; }
.topbar .spacer { flex: 1; }
.link-btn {
display: inline-flex; align-items: center; gap: 6px;
padding: 7px 12px; border-radius: 9px; border: 1px solid var(--line);
background: var(--surface); color: var(--ink-2); text-decoration: none; font-size: 14px; white-space: nowrap;
}
.link-btn:hover { border-color: var(--line-strong); color: var(--ink); }
.lang {
appearance: none; -webkit-appearance: none;
padding: 7px 30px 7px 12px; border-radius: 9px; border: 1px solid var(--line);
background: var(--surface) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%238a8880' stroke-width='2.5' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='m6 9 6 6 6-6'/%3E%3C/svg%3E") no-repeat right 10px center;
color: var(--ink-2); font-size: 14px; cursor: pointer;
}
.lang:hover { border-color: var(--line-strong); color: var(--ink); }
/* ── empty state ── */
.empty { max-width: 760px; margin: 0 auto; padding: 72px 20px 48px; text-align: center; }
.empty h1 { font-size: clamp(28px, 4.2vw, 40px); line-height: 1.25; letter-spacing: -.025em; margin: 0 0 12px; }
.empty .lead { color: var(--ink-2); margin: 0 0 36px; font-size: 16px; }
.drop {
position: relative; display: grid; place-items: center; gap: 14px;
padding: 56px 24px; border-radius: 22px;
border: 1.5px dashed var(--line-strong); background: var(--surface);
transition: border-color .15s, background .15s, transform .15s;
cursor: pointer;
}
.drop:hover { border-color: var(--ink-2); }
.drop.over { border-color: var(--accent); background: color-mix(in srgb, var(--accent) 5%, var(--surface)); transform: scale(1.005); }
.drop-art { width: 132px; height: 84px; }
.drop strong { font-size: 18px; }
.drop span { color: var(--muted); font-size: 14px; }
.btn {
display: inline-flex; align-items: center; justify-content: center; gap: 8px;
padding: 9px 16px; border-radius: 10px; border: 1px solid var(--line-strong);
background: var(--surface); font-weight: 600; font-size: 14px; white-space: nowrap;
transition: background .12s, border-color .12s, opacity .12s;
}
.btn:hover { border-color: var(--ink-2); }
.btn:disabled { opacity: .45; cursor: default; }
.btn.primary { background: var(--primary); color: var(--primary-ink); border-color: var(--primary); }
.btn.primary:hover { opacity: .9; }
.btn.big { width: 100%; padding: 13px 16px; font-size: 15px; border-radius: 12px; }
.btn.ghost { border-color: transparent; background: transparent; color: var(--ink-2); padding: 7px 10px; }
.btn.ghost:hover { background: var(--surface-2); }
.features { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; margin-top: 28px; text-align: left; }
.feature { padding: 16px; border-radius: 14px; background: var(--surface); border: 1px solid var(--line); }
.feature b { display: block; font-size: 14px; margin-bottom: 2px; }
.feature p { margin: 0; color: var(--muted); font-size: 13px; line-height: 1.5; }
.loading { margin-top: 20px; color: var(--ink-2); font-size: 14px; }
.loading .bar { height: 4px; margin: 10px auto 0; max-width: 320px; }
/* ── workspace ── */
.workspace { display: grid; grid-template-columns: 300px 1fr; gap: 24px; padding: 24px; align-items: start; }
.panel {
position: sticky; top: 80px;
background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius);
box-shadow: var(--shadow); padding: 6px 18px 18px;
max-height: calc(100vh - 104px); overflow: auto;
}
.group { padding: 14px 0; border-bottom: 1px solid var(--line); }
.group:last-of-type { border-bottom: 0; }
.label { display: flex; justify-content: space-between; align-items: baseline; font-size: 13px; font-weight: 600; color: var(--ink-2); margin-bottom: 9px; }
.label output { font-variant-numeric: tabular-nums; color: var(--ink); font-weight: 700; }
.hint { color: var(--muted); font-size: 12.5px; line-height: 1.5; margin: 8px 0 0; }
.file-name { font-weight: 700; word-break: break-all; line-height: 1.35; }
.file-meta { color: var(--muted); font-size: 13px; margin-top: 2px; }
.file-row { display: flex; gap: 10px; align-items: flex-start; justify-content: space-between; }
.seg { display: flex; padding: 3px; background: var(--surface-2); border-radius: 10px; gap: 2px; }
.seg button {
flex: 1; border: 0; background: transparent; padding: 7px 8px; border-radius: 8px;
font-size: 13px; font-weight: 600; color: var(--muted); white-space: nowrap;
}
.seg button[aria-pressed="true"] { background: var(--surface); color: var(--ink); box-shadow: 0 1px 2px rgba(0,0,0,.08), 0 0 0 1px var(--line); }
.seg button:hover:not([aria-pressed="true"]) { color: var(--ink); }
.row { display: flex; gap: 6px; margin-top: 10px; }
.row .btn { flex: 1; padding: 7px 10px; font-size: 13px; }
input[type=range] { -webkit-appearance: none; appearance: none; width: 100%; height: 22px; background: transparent; }
input[type=range]::-webkit-slider-runnable-track { height: 4px; border-radius: 4px; background: var(--line-strong); }
input[type=range]::-moz-range-track { height: 4px; border-radius: 4px; background: var(--line-strong); }
input[type=range]::-webkit-slider-thumb { -webkit-appearance: none; width: 18px; height: 18px; margin-top: -7px; border-radius: 50%; background: var(--surface); border: 2px solid var(--ink); box-shadow: 0 1px 3px rgba(0,0,0,.15); }
input[type=range]::-moz-range-thumb { width: 14px; height: 14px; border-radius: 50%; background: var(--surface); border: 2px solid var(--ink); }
.summary { display: flex; align-items: center; justify-content: space-between; margin: 16px 0 12px; font-size: 14px; color: var(--ink-2); }
.summary b { color: var(--ink); font-variant-numeric: tabular-nums; }
.summary .arrow { color: var(--muted); }
.bar { height: 4px; border-radius: 4px; background: var(--surface-2); overflow: hidden; margin-top: 10px; }
.bar i { display: block; height: 100%; width: 0; background: var(--accent); transition: width .15s; }
.done {
margin-top: 12px; padding: 12px; border-radius: 12px; font-size: 13.5px;
background: color-mix(in srgb, var(--ok) 10%, var(--surface)); border: 1px solid color-mix(in srgb, var(--ok) 30%, transparent);
}
.done b { color: var(--ok); }
.done a { color: var(--ink); font-weight: 600; }
/* ── page grid ── */
.grid-head { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin: 2px 0 14px; }
.grid-head h2 { margin: 0; font-size: 17px; letter-spacing: -.01em; }
.legend { display: flex; gap: 14px; color: var(--muted); font-size: 12.5px; flex-wrap: wrap; }
.legend span { display: inline-flex; align-items: center; gap: 6px; }
.legend i { width: 14px; height: 2px; background: var(--accent); display: inline-block; }
.legend i.band { height: 10px; width: 10px; border-radius: 2px; background: var(--accent-soft); }
.grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(250px, 1fr)); gap: 16px; }
.card {
background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius);
overflow: hidden; transition: border-color .15s, box-shadow .15s;
}
.card:hover { border-color: var(--line-strong); box-shadow: var(--shadow); }
.stage {
container-type: size; aspect-ratio: 4 / 3;
display: grid; place-items: center; padding: 0;
background: var(--surface-2);
}
.thumb {
--ar: 1.4;
position: relative; aspect-ratio: var(--ar);
width: min(calc(100cqw - 24px), calc((100cqh - 24px) * var(--ar)));
background: #fff; box-shadow: 0 1px 3px rgba(0,0,0,.14);
user-select: none; touch-action: none;
}
.thumb canvas { position: absolute; inset: 0; width: 100%; height: 100%; display: block; opacity: 0; transition: opacity .2s; }
.thumb.ready canvas { opacity: 1; }
.thumb::before {
content: ""; position: absolute; inset: 0;
background: linear-gradient(100deg, transparent 30%, rgba(0,0,0,.04) 50%, transparent 70%) #f3f2ee;
background-size: 300% 100%; animation: shimmer 1.4s infinite linear;
}
.thumb.ready::before { display: none; }
@keyframes shimmer { from { background-position: 100% 0; } to { background-position: -200% 0; } }
.band, .cut, .tag, .skip-mark { position: absolute; }
.band { top: 0; bottom: 0; pointer-events: none; }
.band.overlap { background: var(--accent-soft); }
.band.gap { background: repeating-linear-gradient(135deg, var(--cut) 0 3px, transparent 3px 7px); }
.cut { top: -6px; bottom: -6px; width: 22px; margin-left: -11px; cursor: ew-resize; z-index: 2; }
.cut::before { content: ""; position: absolute; left: 10px; top: 6px; bottom: 6px; width: 2px; background: var(--accent); box-shadow: 0 0 0 1px rgba(255,255,255,.55); }
.cut::after {
content: ""; position: absolute; left: 4px; top: 50%; width: 14px; height: 26px; margin-top: -13px;
border-radius: 7px; background: var(--accent); box-shadow: 0 1px 4px rgba(0,0,0,.3);
opacity: 0; transition: opacity .12s;
}
.thumb:hover .cut::after, .thumb.dragging .cut::after, .cut:focus-visible::after { opacity: 1; }
.cut:focus-visible { outline: none; }
.tag {
top: 8px; transform: translateX(-50%);
min-width: 26px; padding: 1px 7px; border-radius: 99px; text-align: center;
background: rgba(29,29,27,.82); color: #fff; font-size: 11.5px; font-weight: 700; font-variant-numeric: tabular-nums;
pointer-events: none; z-index: 1;
}
.skip-mark { inset: 0; display: grid; place-items: center; background: rgba(245,244,240,.72); color: #4a4944; font-weight: 700; font-size: 13px; }
.card.mode-skip .thumb canvas { filter: grayscale(1); }
.card-foot { display: flex; align-items: center; gap: 8px; padding: 10px 10px 10px 14px; border-top: 1px solid var(--line); }
.pno { font-size: 13px; font-weight: 700; font-variant-numeric: tabular-nums; min-width: 34px; }
.pno em { display: block; font-style: normal; font-weight: 500; color: var(--accent); font-size: 11px; line-height: 1.2; }
.card-foot .seg { flex: 1; padding: 2px; }
.card-foot .seg button { padding: 5px 4px; font-size: 12px; }
.icon-btn {
width: 32px; height: 32px; display: grid; place-items: center; flex: none;
border: 1px solid var(--line); background: var(--surface); border-radius: 9px; color: var(--ink-2);
}
.icon-btn:hover { border-color: var(--line-strong); color: var(--ink); }
.icon-btn svg { width: 16px; height: 16px; }
/* ── viewer ── */
dialog.viewer {
width: min(1280px, calc(100vw - 32px)); height: calc(100vh - 32px); max-height: none; max-width: none;
padding: 0; border: 1px solid var(--line); border-radius: 18px; background: var(--surface); color: var(--ink);
box-shadow: 0 30px 80px rgba(0,0,0,.35);
}
dialog.viewer[open] { display: grid; grid-template-rows: auto 1fr auto; }
dialog.viewer::backdrop { background: rgba(15,15,14,.55); backdrop-filter: blur(3px); }
.v-head, .v-foot { display: flex; align-items: center; gap: 12px; padding: 12px 16px; }
.v-head { border-bottom: 1px solid var(--line); }
.v-foot { border-top: 1px solid var(--line); justify-content: space-between; font-size: 13.5px; color: var(--ink-2); }
.v-head .title { font-weight: 700; }
.v-head .seg { width: 260px; }
.v-head .spacer { flex: 1; }
.v-stage { container-type: size; display: grid; place-items: center; background: var(--surface-2); min-height: 0; }
.v-stage .thumb { width: min(calc(100cqw - 48px), calc((100cqh - 48px) * var(--ar))); }
.v-stage .tag { font-size: 13px; padding: 2px 10px; top: 12px; }
.v-info { font-variant-numeric: tabular-nums; display: flex; align-items: center; gap: 8px; flex-wrap: wrap; justify-content: center; }
.kbd { font: 600 11.5px/1 ui-monospace, Consolas, monospace; padding: 3px 6px; border-radius: 5px; border: 1px solid var(--line-strong); background: var(--surface-2); color: var(--ink-2); }
.pill { font-size: 12px; font-weight: 600; padding: 2px 8px; border-radius: 99px; background: var(--accent-soft); color: var(--accent); }
/* ── toast ── */
.toast {
position: fixed; left: 50%; bottom: 24px; transform: translate(-50%, 20px); opacity: 0; z-index: 50;
padding: 11px 16px; border-radius: 12px; background: var(--primary); color: var(--primary-ink);
font-size: 14px; font-weight: 500; box-shadow: 0 10px 30px rgba(0,0,0,.25); pointer-events: none;
transition: opacity .2s, transform .2s; max-width: calc(100vw - 32px);
}
.toast.show { opacity: 1; transform: translate(-50%, 0); }
.drag-veil {
position: fixed; inset: 0; z-index: 40; display: grid; place-items: center; pointer-events: none;
background: color-mix(in srgb, var(--bg) 80%, transparent); border: 3px dashed var(--accent);
font-size: 20px; font-weight: 700;
}
@media (max-width: 880px) {
.workspace { grid-template-columns: 1fr; padding: 16px; }
.panel { position: static; max-height: none; }
.topbar { padding: 12px 16px; gap: 8px; }
.features { grid-template-columns: 1fr; }
.grid { grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); }
.v-head .seg { width: auto; }
.brand small { display: none; }
.link-btn span { display: none; }
.link-btn { padding: 7px 9px; }
}
</style>
</head>
<body>
<noscript><p style="margin:0;padding:10px 16px;background:#fff4d6;text-align:center">펼침면 나누기는 <a href="https://chaekgalpi.co.kr/apps/spreadsplit/">https://chaekgalpi.co.kr/apps/spreadsplit/</a> 에서 씁니다(자바스크립트 필요). Spread Split now lives at the address above.</p></noscript>
<header class="topbar">
<div class="brand">
<svg viewBox="0 0 32 32" aria-hidden="true"><rect x="3" y="7" width="12" height="18" rx="2" fill="currentColor"/><rect x="17" y="7" width="12" height="18" rx="2" fill="currentColor"/><rect x="15.25" y="3" width="1.5" height="26" rx=".75" fill="var(--accent)"/></svg>
<span data-i18n="brand">펼침면 나누기</span> <small data-i18n="brandSub">Spread Split</small>
</div>
<div class="spacer"></div>
<select class="lang" id="lang" aria-label="Language">
<option value="ko">한국어</option>
<option value="en">English</option>
<option value="zh">中文</option>
<option value="ja">日本語</option>
</select>
<a class="link-btn" id="guideLink" href="guide.html" target="_blank" rel="noopener">
<svg width="15" height="15" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" aria-hidden="true"><circle cx="12" cy="12" r="9.5"/><path d="M9.3 9.2a2.8 2.8 0 0 1 5.4 1c0 1.9-2.7 2.6-2.7 2.6M12 16.8h.01"/></svg>
<span data-i18n="guide">사용 설명</span>
</a>
</header>
<main>
<!-- empty -->
<section id="empty" class="empty">
<h1 data-i18n="h1">펼쳐서 스캔한 PDF를<br>한 쪽씩 나눕니다</h1>
<p class="lead" data-i18n="lead">한 장에 두 쪽이 담긴 스캔본을 왼쪽·오른쪽으로 잘라 새 PDF로 만들어요.</p>
<label class="drop" id="drop" tabindex="0">
<svg class="drop-art" viewBox="0 0 132 84" fill="none" aria-hidden="true">
<rect x="6" y="10" width="56" height="68" rx="4" fill="var(--surface-2)" stroke="var(--line-strong)"/>
<rect x="70" y="10" width="56" height="68" rx="4" fill="var(--surface-2)" stroke="var(--line-strong)"/>
<g stroke="var(--line-strong)" stroke-width="3" stroke-linecap="round">
<path d="M16 26h36M16 36h36M16 46h28M16 56h34"/><path d="M80 26h36M80 36h30M80 46h36M80 56h24"/>
</g>
<path d="M66 2v80" stroke="var(--accent)" stroke-width="2" stroke-dasharray="4 4"/>
</svg>
<strong data-i18n="dropMain">PDF 파일을 여기에 끌어다 놓으세요</strong>
<span data-i18n="dropSub">또는 눌러서 파일 고르기</span>
<input id="file" type="file" accept="application/pdf,.pdf" hidden>
</label>
<div id="loading" class="loading" hidden>
<div id="loadingText"></div>
<div class="bar"><i id="loadingBar"></i></div>
</div>
<div class="features">
<div class="feature"><b data-i18n="f1t"></b><p data-i18n="f1p"></p></div>
<div class="feature"><b data-i18n="f2t"></b><p data-i18n="f2p"></p></div>
<div class="feature"><b data-i18n="f3t"></b><p data-i18n="f3p"></p></div>
</div>
</section>
<!-- workspace -->
<section id="workspace" class="workspace" hidden>
<aside class="panel" id="panel">
<div class="group">
<div class="file-row">
<div>
<div class="file-name" id="fName"></div>
<div class="file-meta" id="fMeta"></div>
</div>
<button class="btn ghost" id="btnOther" data-i18n="change" data-i18n-title="changeTitle"></button>
</div>
</div>
<div class="group">
<div class="label" data-i18n="dir"></div>
<div class="seg" id="dirSeg">
<button data-dir="ltr" aria-pressed="true" data-i18n="ltr"></button>
<button data-dir="rtl" aria-pressed="false" data-i18n="rtl"></button>
</div>
<p class="hint" data-i18n="dirHint"></p>
</div>
<div class="group">
<div class="label"><span data-i18n="pos"></span><output id="posOut">50.0%</output></div>
<input type="range" id="pos" min="30" max="70" step="0.1" value="50" data-i18n-aria="pos">
<div class="row">
<button class="btn" id="btnAuto" data-i18n="auto"></button>
<button class="btn" id="btnClear" disabled data-i18n="clear"></button>
</div>
<p class="hint" data-i18n="posHint"></p>
</div>
<div class="group">
<div class="label"><span data-i18n="overlap"></span><output id="ovOut">0.0%</output></div>
<input type="range" id="overlap" min="-4" max="4" step="0.1" value="0" data-i18n-aria="overlap">
<p class="hint" data-i18n="overlapHint"></p>
</div>
<div class="group">
<div class="label" data-i18n="bulk"></div>
<div class="seg" id="bulkSeg">
<button data-bulk="auto" aria-pressed="false" data-i18n="bulkAuto"></button>
<button data-bulk="split" aria-pressed="false" data-i18n="bulkAll"></button>
<button data-bulk="whole" aria-pressed="false" data-i18n="bulkNone"></button>
</div>
<p class="hint" data-i18n="bulkHint"></p>
</div>
<div class="summary">
<span><span data-i18n="sumSrc"></span> <b id="sumIn">0</b><span data-i18n="pagesUnit"></span></span>
<span class="arrow">→</span>
<span><span data-i18n="sumOut"></span> <b id="sumOut">0</b><span data-i18n="pagesUnit"></span></span>
</div>
<button class="btn primary big" id="btnBuild">
<svg width="16" height="16" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2.2" stroke-linecap="round" stroke-linejoin="round" aria-hidden="true"><path d="M12 4v11m0 0 4.5-4.5M12 15l-4.5-4.5M5 20h14"/></svg>
<span id="btnBuildLabel" data-i18n="build"></span>
</button>
<div class="bar" id="buildBarWrap" hidden><i id="buildBar"></i></div>
<div class="done" id="done" hidden></div>
</aside>
<div>
<div class="grid-head">
<h2 data-i18n="preview"></h2>
<div class="legend">
<span><i></i><span data-i18n="legendLine"></span></span>
<span><i class="band"></i><span data-i18n="legendBand"></span></span>
<span data-i18n="legendDbl"></span>
</div>
</div>
<div class="grid" id="grid"></div>
</div>
</section>
</main>
<dialog class="viewer" id="viewer" data-i18n-aria="zoomTitle">
<div class="v-head">
<span class="title" id="vTitle"></span>
<div class="spacer"></div>
<div class="seg" id="vSeg">
<button data-mode="split" data-i18n="modeSplit"></button>
<button data-mode="whole" data-i18n="modeWhole"></button>
<button data-mode="skip" data-i18n="modeSkip"></button>
</div>
<button class="icon-btn" id="vClose" data-i18n-aria="close"><svg viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2.2" stroke-linecap="round"><path d="M6 6l12 12M18 6 6 18"/></svg></button>
</div>
<div class="v-stage"><div class="thumb" id="vThumb"><canvas></canvas></div></div>
<div class="v-foot">
<button class="btn" id="vPrev" data-i18n="prev"></button>
<div class="v-info" id="vInfo"></div>
<button class="btn" id="vNext" data-i18n="next"></button>
</div>
</dialog>
<div class="toast" id="toast" role="status"></div>
<div class="drag-veil" id="veil" hidden data-i18n="veil"></div>
<script src="https://cdnjs.cloudflare.com/ajax/libs/pdf.js/3.11.174/pdf.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/pdf-lib/1.17.1/pdf-lib.min.js"></script>
<script>
(() => {
'use strict';
/* ───────── i18n ───────── */
const I18N = {
ko: {
brand: '펼침면 나누기', brandSub: 'Spread Split', guide: '사용 설명', docTitle: '펼침면 나누기',
h1: '펼쳐서 스캔한 PDF를<br>한 쪽씩 나눕니다',
lead: '한 장에 두 쪽이 담긴 스캔본을 왼쪽·오른쪽으로 잘라 새 PDF로 만들어요.',
dropMain: 'PDF 파일을 여기에 끌어다 놓으세요', dropSub: '또는 눌러서 파일 고르기',
loadingOpen: '파일 여는 중…', loadingPages: '쪽 정보 읽는 중… {i} / {n}',
f1t: '화질 그대로', f1p: '이미지를 다시 압축하지 않고 보이는 영역만 잘라서 원본 화질과 OCR 글자를 유지해요.',
f2t: '파일은 내 컴퓨터에만', f2p: '모든 처리는 브라우저 안에서 끝나요. 서버로 올라가지 않아요.',
f3t: '쪽마다 조정', f3p: '분할선을 끌어서 옮기거나 자동 맞춤으로 제본선을 찾을 수 있어요.',
change: '바꾸기', changeTitle: '다른 파일 열기',
dir: '읽기 방향', ltr: '왼쪽 → 오른쪽', rtl: '오른쪽 → 왼쪽', dirHint: '세로쓰기 책이나 일본 만화는 오른쪽 쪽이 먼저예요.',
pos: '분할선 위치', auto: '자동 맞춤', autoBusy: '찾는 중 {done}/{total} · 멈추기', clear: '개별 조정 지우기', clearN: '개별 조정 지우기 ({n})',
posHint: '미리보기의 빨간 선을 끌면 그 쪽만 따로 옮겨져요.',
overlap: '가운데 겹침', overlapHint: '<b>+</b> 쪽마다 제본선 부분을 조금 더 넣고, <b>−</b> 가운데 그림자를 잘라내요.',
bulk: '나눌 쪽 한꺼번에 고르기', bulkAuto: '가로 쪽만', bulkAll: '모두', bulkNone: '나누지 않음',
bulkHint: '보통은 <b>가로 쪽만</b>이 맞아요. 세로로 긴 표지는 그대로 둬요.',
sumSrc: '원본', sumOut: '결과', pagesUnit: '쪽', build: 'PDF 만들기',
preview: '미리보기', legendLine: '분할선', legendBand: '겹치는 부분', legendDbl: '선 더블클릭 = 되돌리기',
modeSplit: '나누기', modeWhole: '통째로', modeSkip: '빼기', pageN: '{n}쪽', zoomN: '{n}쪽 크게 보기', zoomTitle: '크게 보기', close: '닫기',
prev: '← 이전 쪽', next: '다음 쪽 →', skipMark: '결과에서 빠짐', cutLabel: '분할선',
vTitle: '{i}쪽 / {n}쪽', vLine: '분할선 {p}', vCustom: '이 쪽만 조정됨', vReset: '되돌리기',
vHint: '· 선을 끌거나 <span class="kbd">Tab</span> 후 <span class="kbd">←</span><span class="kbd">→</span>',
vWhole: '이 쪽은 나누지 않고 그대로 넣어요', vSkip: '이 쪽은 결과에 넣지 않아요',
meta: '{n}쪽 · {size} · 펼침면 {s}쪽',
tBusy: 'PDF를 만드는 중이에요. 끝난 뒤에 다시 시도해 주세요.', tPdfOnly: 'PDF 파일만 열 수 있어요.',
tNoPages: '쪽이 하나도 없는 PDF예요.', tEncrypted: '보안 설정(암호)이 걸린 PDF는 나눌 수 없어요. 암호를 해제한 사본으로 다시 열어 주세요.',
tPassword: '암호가 걸린 PDF는 열 수 없어요. 암호를 푼 뒤 다시 열어 주세요.', tReadFail: 'PDF를 읽지 못했어요. 파일이 손상되지 않았는지 확인해 주세요.',
tLibFail: '필요한 라이브러리를 불러오지 못했어요. 인터넷 연결을 확인한 뒤 새로고침해 주세요.',
tCleared: '모든 쪽이 기본 분할선을 따라가요.', tNoSplit: '나누기로 표시된 쪽이 없어요.',
tFound: '{n}쪽의 제본선을 찾았어요. 미리보기에서 확인해 주세요.', tNotFound: '제본선을 뚜렷하게 찾지 못했어요. 직접 조정해 주세요.',
tBuildErr: 'PDF를 만들다가 문제가 생겼어요: {msg}',
progRead: '원본 읽는 중…', progCopy: '쪽 복사하는 중…', progSplit: '쪽 나누는 중… {i}/{n}', progSave: '저장하는 중…', progDone: '완성!',
done: '완성했어요. ', doneInfo: '{n}쪽 · {size} ', again: '다시 받기', view: '열어 보기',
veil: '여기에 놓으면 이 파일로 바꿔요', producer: '펼침면 나누기 (pdf-lib)',
},
en: {
brand: 'Spread Split', brandSub: 'two-page scan splitter', guide: 'Guide', docTitle: 'Spread Split',
h1: 'Split scanned book spreads<br>into single pages',
lead: 'Turn a PDF scanned two pages per sheet into a new PDF with one page per sheet.',
dropMain: 'Drop a PDF file here', dropSub: 'or click to choose a file',
loadingOpen: 'Opening file…', loadingPages: 'Reading pages… {i} / {n}',
f1t: 'Original quality', f1p: 'Images are never re-encoded. Only the visible area is trimmed, so quality and OCR text stay intact.',
f2t: 'Files stay on your computer', f2p: 'Everything runs inside the browser. Nothing is uploaded to a server.',
f3t: 'Adjust per page', f3p: 'Drag the split line on any page, or let auto-fit find the gutter for you.',
change: 'Change', changeTitle: 'Open another file',
dir: 'Reading order', ltr: 'Left → right', rtl: 'Right → left', dirHint: 'Vertical-text books and manga read the right page first.',
pos: 'Split position', auto: 'Auto-fit', autoBusy: 'Finding {done}/{total} · Stop', clear: 'Reset per-page lines', clearN: 'Reset per-page lines ({n})',
posHint: 'Drag the red line in a preview to move that page only.',
overlap: 'Center overlap', overlapHint: '<b>+</b> includes a little of the gutter on both pages; <b>−</b> trims the gutter shadow away.',
bulk: 'Choose pages to split', bulkAuto: 'Landscape only', bulkAll: 'All', bulkNone: 'None',
bulkHint: '<b>Landscape only</b> is usually right: portrait covers are kept whole.',
sumSrc: 'Source', sumOut: 'Result', pagesUnit: ' pages', build: 'Create PDF',
preview: 'Preview', legendLine: 'split line', legendBand: 'overlap', legendDbl: 'double-click line = reset',
modeSplit: 'Split', modeWhole: 'Whole', modeSkip: 'Skip', pageN: 'p. {n}', zoomN: 'Enlarge page {n}', zoomTitle: 'Enlarge', close: 'Close',
prev: '← Previous', next: 'Next →', skipMark: 'Skipped', cutLabel: 'Split line',
vTitle: 'Page {i} of {n}', vLine: 'Split at {p}', vCustom: 'Adjusted on this page', vReset: 'Reset',
vHint: '· drag the line, or press <span class="kbd">Tab</span> then <span class="kbd">←</span><span class="kbd">→</span>',
vWhole: 'This page is kept whole', vSkip: 'This page is left out of the result',
meta: '{n} pages · {size} · {s} spreads',
tBusy: 'Still creating the PDF. Please try again when it finishes.', tPdfOnly: 'Only PDF files can be opened.',
tNoPages: 'This PDF has no pages.', tEncrypted: 'This PDF is protected (encrypted) and cannot be split. Please remove the password first.',
tPassword: 'Password-protected PDFs cannot be opened. Please remove the password first.', tReadFail: 'Could not read the PDF. Please check that the file is not damaged.',
tLibFail: 'Could not load the required libraries. Check your internet connection and reload.',
tCleared: 'All pages now follow the global split line.', tNoSplit: 'No page is marked to be split.',
tFound: 'Found the gutter on {n} pages. Please check the previews.', tNotFound: 'Could not find a clear gutter. Please adjust manually.',
tBuildErr: 'Something went wrong while creating the PDF: {msg}',
progRead: 'Reading source…', progCopy: 'Copying pages…', progSplit: 'Splitting pages… {i}/{n}', progSave: 'Saving…', progDone: 'Done!',
done: 'Done. ', doneInfo: '{n} pages · {size} ', again: 'Download again', view: 'Open',
veil: 'Drop to replace the current file', producer: 'Spread Split (pdf-lib)',
},
zh: {
brand: '跨页拆分', brandSub: 'Spread Split', guide: '使用说明', docTitle: '跨页拆分',
h1: '把摊开扫描的 PDF<br>拆成单页',
lead: '将一张含两页的扫描件按左右页裁开，生成新的 PDF。',
dropMain: '把 PDF 文件拖到这里', dropSub: '或点击选择文件',
loadingOpen: '正在打开文件…', loadingPages: '正在读取页面信息… {i} / {n}',
f1t: '画质不变', f1p: '不重新压缩图片，只裁剪可见区域，保留原始画质和 OCR 文字。',
f2t: '文件只在本机处理', f2p: '所有处理都在浏览器内完成，不会上传到服务器。',
f3t: '逐页调整', f3p: '可拖动分割线，或用自动对齐找到装订线。',
change: '更换', changeTitle: '打开其他文件',
dir: '阅读方向', ltr: '左 → 右', rtl: '右 → 左', dirHint: '竖排书籍和日本漫画先读右页。',
pos: '分割线位置', auto: '自动对齐', autoBusy: '查找中 {done}/{total} · 停止', clear: '清除逐页调整', clearN: '清除逐页调整 ({n})',
posHint: '拖动预览中的红线，只移动该页的分割线。',
overlap: '中间重叠', overlapHint: '<b>+</b> 让两页都多含一点装订线部分；<b>−</b> 裁掉中间的阴影。',
bulk: '批量选择要拆分的页', bulkAuto: '仅横向页', bulkAll: '全部', bulkNone: '不拆分',
bulkHint: '通常选 <b>仅横向页</b> 即可，竖向的封面保持原样。',
sumSrc: '原文件', sumOut: '结果', pagesUnit: ' 页', build: '生成 PDF',
preview: '预览', legendLine: '分割线', legendBand: '重叠部分', legendDbl: '双击分割线 = 还原',
modeSplit: '拆分', modeWhole: '整页', modeSkip: '排除', pageN: '第 {n} 页', zoomN: '放大第 {n} 页', zoomTitle: '放大查看', close: '关闭',
prev: '← 上一页', next: '下一页 →', skipMark: '不计入结果', cutLabel: '分割线',
vTitle: '第 {i} 页 / 共 {n} 页', vLine: '分割线 {p}', vCustom: '仅此页已调整', vReset: '还原',
vHint: '· 拖动分割线，或按 <span class="kbd">Tab</span> 后用 <span class="kbd">←</span><span class="kbd">→</span>',
vWhole: '此页不拆分，整页保留', vSkip: '此页不计入结果',
meta: '{n} 页 · {size} · 跨页 {s} 页',
tBusy: '正在生成 PDF，请稍后再试。', tPdfOnly: '只能打开 PDF 文件。',
tNoPages: '这个 PDF 没有任何页面。', tEncrypted: '带有安全设置（加密）的 PDF 无法拆分，请先解除密码后再打开。',
tPassword: '无法打开带密码的 PDF，请先解除密码。', tReadFail: '无法读取 PDF，请确认文件没有损坏。',
tLibFail: '无法加载所需的库，请检查网络连接后刷新页面。',
tCleared: '所有页面已恢复为默认分割线。', tNoSplit: '没有标记为拆分的页面。',
tFound: '已在 {n} 页找到装订线，请在预览中确认。', tNotFound: '未能明确找到装订线，请手动调整。',
tBuildErr: '生成 PDF 时出错：{msg}',
progRead: '正在读取原文件…', progCopy: '正在复制页面…', progSplit: '正在拆分页面… {i}/{n}', progSave: '正在保存…', progDone: '完成！',
done: '已完成。', doneInfo: '{n} 页 · {size} ', again: '再次下载', view: '打开查看',
veil: '放开即可替换当前文件', producer: 'Spread Split (pdf-lib)',
},
ja: {
brand: '見開き分割', brandSub: 'Spread Split', guide: '使い方', docTitle: '見開き分割',
h1: '見開きスキャンの PDF を<br>1 ページずつに分けます',
lead: '1 枚に 2 ページ写ったスキャンを左右に切り分け、新しい PDF を作ります。',
dropMain: 'PDF ファイルをここにドロップ', dropSub: 'またはクリックして選択',
loadingOpen: 'ファイルを開いています…', loadingPages: 'ページ情報を読み込み中… {i} / {n}',
f1t: '画質そのまま', f1p: '画像を再圧縮せず表示範囲だけを切り取るので、元の画質と OCR テキストが保たれます。',
f2t: 'ファイルは PC の中だけ', f2p: 'すべての処理はブラウザ内で完結し、サーバーには送られません。',
f3t: 'ページごとに調整', f3p: '分割線をドラッグで動かしたり、自動調整でのどを見つけたりできます。',
change: '変更', changeTitle: '別のファイルを開く',
dir: '読む順序', ltr: '左 → 右', rtl: '右 → 左', dirHint: '縦書きの本やマンガは右ページが先です。',
pos: '分割線の位置', auto: '自動調整', autoBusy: '検出中 {done}/{total} · 停止', clear: 'ページ別の調整を消す', clearN: 'ページ別の調整を消す ({n})',
posHint: 'プレビューの赤い線をドラッグすると、そのページだけ動きます。',
overlap: '中央の重なり', overlapHint: '<b>+</b> のど付近を両ページに少し含め、<b>−</b> 中央の影を切り落とします。',
bulk: '分割するページをまとめて選ぶ', bulkAuto: '横長のみ', bulkAll: 'すべて', bulkNone: '分割しない',
bulkHint: 'ふつうは <b>横長のみ</b> で合っています。縦長の表紙はそのままです。',
sumSrc: '元', sumOut: '結果', pagesUnit: ' ページ', build: 'PDF を作成',
preview: 'プレビュー', legendLine: '分割線', legendBand: '重なり', legendDbl: '線をダブルクリック = 戻す',
modeSplit: '分割', modeWhole: 'そのまま', modeSkip: '除外', pageN: '{n} ページ', zoomN: '{n} ページを拡大', zoomTitle: '拡大表示', close: '閉じる',
prev: '← 前のページ', next: '次のページ →', skipMark: '結果に含めない', cutLabel: '分割線',
vTitle: '{i} / {n} ページ', vLine: '分割線 {p}', vCustom: 'このページのみ調整済み', vReset: '戻す',
vHint: '· 線をドラッグ、または <span class="kbd">Tab</span> のあと <span class="kbd">←</span><span class="kbd">→</span>',
vWhole: 'このページは分割せずそのまま入れます', vSkip: 'このページは結果に含めません',
meta: '{n} ページ · {size} · 見開き {s} ページ',
tBusy: 'PDF を作成中です。終わってからもう一度お試しください。', tPdfOnly: 'PDF ファイルのみ開けます。',
tNoPages: 'ページが 1 つもない PDF です。', tEncrypted: 'セキュリティ（暗号化）が設定された PDF は分割できません。パスワードを解除したコピーで開いてください。',
tPassword: 'パスワード付きの PDF は開けません。解除してから開いてください。', tReadFail: 'PDF を読めませんでした。ファイルが壊れていないか確認してください。',
tLibFail: '必要なライブラリを読み込めませんでした。インターネット接続を確認して再読み込みしてください。',
tCleared: 'すべてのページが共通の分割線に従います。', tNoSplit: '分割に設定されたページがありません。',
tFound: '{n} ページでのどを見つけました。プレビューで確認してください。', tNotFound: 'のどをはっきり見つけられませんでした。手動で調整してください。',
tBuildErr: 'PDF の作成中に問題が起きました: {msg}',
progRead: '元ファイルを読み込み中…', progCopy: 'ページをコピー中…', progSplit: 'ページを分割中… {i}/{n}', progSave: '保存中…', progDone: '完成！',
done: '完成しました。', doneInfo: '{n} ページ · {size} ', again: 'もう一度保存', view: '開く',
veil: 'ここにドロップするとこのファイルに切り替わります', producer: 'Spread Split (pdf-lib)',
},
};
const LANG_KEY = 'spreadSplit.lang';
let LANG = 'ko';
// 저장소가 막힌 환경(사생활 보호 모드, 일부 file:// 등)에서도 동작하도록 감싼다
const store = {
get: k => { try { return localStorage.getItem(k); } catch { return null; } },
set: (k, v) => { try { localStorage.setItem(k, v); } catch {} },
};
const t = (key, vars) => {
let s = (I18N[LANG] && I18N[LANG][key]) ?? I18N.ko[key] ?? key;
if (vars) for (const k in vars) s = s.replaceAll('{' + k + '}', vars[k]);
return s;
};
function detectLang() {
const saved = store.get(LANG_KEY);
if (I18N[saved]) return saved;
for (const l of navigator.languages || [navigator.language || 'en']) {
const p = l.toLowerCase().slice(0, 2);
if (I18N[p]) return p;
}
return 'en';
}
function applyLang(lang) {
LANG = I18N[lang] ? lang : 'en';
document.documentElement.lang = LANG;
document.title = t('docTitle');
document.querySelectorAll('[data-i18n]').forEach(el => { el.innerHTML = t(el.dataset.i18n); });
document.querySelectorAll('[data-i18n-title]').forEach(el => { el.title = t(el.dataset.i18nTitle); });
document.querySelectorAll('[data-i18n-aria]').forEach(el => { el.setAttribute('aria-label', t(el.dataset.i18nAria)); });
document.getElementById('lang').value = LANG;
document.getElementById('guideLink').href = 'guide.html#' + LANG;
}
const $ = (s, r = document) => r.querySelector(s);
const clamp = (v, a, b) => Math.min(b, Math.max(a, v));
const fmtPct = f => (f * 100).toFixed(1) + '%';
const fmtSize = b => b < 1024 * 1024 ? (b / 1024).toFixed(0) + 'KB' : (b / 1024 / 1024).toFixed(1) + 'MB';
const LANDSCAPE = 1.1; // 가로/세로 비율이 이보다 크면 펼침면으로 봄
const POS_MIN = 0.1, POS_MAX = 0.9;
applyLang(detectLang());
document.getElementById('lang').addEventListener('change', e => {
store.set(LANG_KEY, e.target.value);
applyLang(e.target.value);
refresh({ keepDone: true }); // 언어만 바뀐 것이므로 만들어 둔 결과 링크는 그대로 둔다
});
if (!window.pdfjsLib || !window.PDFLib) {
alert(t('tLibFail'));
return;
}
pdfjsLib.GlobalWorkerOptions.workerSrc = 'https://cdnjs.cloudflare.com/ajax/libs/pdf.js/3.11.174/pdf.worker.min.js';
const S = {
name: '', size: 0, bytes: null, doc: null,
pages: [], // { w, h, mode: 'split'|'whole'|'skip', pos: number|null }
pos: 0.5, overlap: 0, dir: 'ltr',
gen: 0, busy: false, detecting: false, outUrl: null,
};
const el = {
empty: $('#empty'), workspace: $('#workspace'), drop: $('#drop'), file: $('#file'),
loading: $('#loading'), loadingText: $('#loadingText'), loadingBar: $('#loadingBar'),
grid: $('#grid'), fName: $('#fName'), fMeta: $('#fMeta'),
pos: $('#pos'), posOut: $('#posOut'), overlap: $('#overlap'), ovOut: $('#ovOut'),
btnAuto: $('#btnAuto'), btnClear: $('#btnClear'), btnBuild: $('#btnBuild'), btnBuildLabel: $('#btnBuildLabel'), btnOther: $('#btnOther'),
sumIn: $('#sumIn'), sumOut: $('#sumOut'), buildBarWrap: $('#buildBarWrap'), buildBar: $('#buildBar'), done: $('#done'),
viewer: $('#viewer'), vThumb: $('#vThumb'), vTitle: $('#vTitle'), vInfo: $('#vInfo'), vSeg: $('#vSeg'),
toast: $('#toast'), veil: $('#veil'),
};
/* ───────── helpers ───────── */
let toastTimer;
function toast(msg, ms = 2600) {
el.toast.textContent = msg;
el.toast.classList.add('show');
clearTimeout(toastTimer);
toastTimer = setTimeout(() => el.toast.classList.remove('show'), ms);
}
const effPos = p => p.pos ?? S.pos;
const halves = (s, g) => ({ left: [0, clamp(s + g, 0, 1)], right: [clamp(s - g, 0, 1), 1] });
/* ───────── open file ───────── */
async function openFile(file) {
if (!file) return;
if (S.busy) { toast(t('tBusy')); return; }
if (!/\.pdf$/i.test(file.name) && file.type !== 'application/pdf') { toast(t('tPdfOnly')); return; }
const gen = ++S.gen;
S.detecting = false;
el.loading.hidden = false;
el.loadingText.textContent = t('loadingOpen');
el.loadingBar.style.width = '0%';
try {
const bytes = new Uint8Array(await file.arrayBuffer());
const doc = await pdfjsLib.getDocument({ data: bytes.slice() }).promise;
if (doc.numPages === 0) {
doc.destroy();
toast(t('tNoPages'));
return;
}
// 권한 암호만 걸린 PDF는 열리긴 하지만 내용 스트림이 암호화되어 있어 그대로 복사하면 깨진 파일이 나온다
const info = (await doc.getMetadata().catch(() => ({}))).info || {};
if (info.EncryptFilterName) {
doc.destroy();
toast(t('tEncrypted'), 5000);
return;
}
const pages = [];
for (let i = 1; i <= doc.numPages; i++) {
const pg = await doc.getPage(i);
const vp = pg.getViewport({ scale: 1 });
pages.push({ w: vp.width, h: vp.height, mode: vp.width / vp.height > LANDSCAPE ? 'split' : 'whole', pos: null });
if (i % 20 === 0) {
el.loadingText.textContent = t('loadingPages', { i, n: doc.numPages });
el.loadingBar.style.width = (i / doc.numPages * 100) + '%';
}
}
if (gen !== S.gen) { doc.destroy(); return; }
if (S.doc) S.doc.destroy();
Object.assign(S, { name: file.name, size: file.size, bytes, doc, pages });
showWorkspace();
} catch (err) {
console.error(err);
toast(err && err.name === 'PasswordException' ? t('tPassword') : t('tReadFail'), 4000);
} finally {
if (gen === S.gen) el.loading.hidden = true;
}
}
function showWorkspace() {
el.empty.hidden = true;
el.workspace.hidden = false;
el.fName.textContent = S.name;
el.done.hidden = true;
if (S.outUrl) { URL.revokeObjectURL(S.outUrl); S.outUrl = null; }
buildGrid();
refresh();
window.scrollTo({ top: 0 });
}
/* ───────── overlay (shared by cards & viewer) ───────── */
function ensureOverlay(thumb) {
if (thumb._ov) return thumb._ov;
const band = document.createElement('div'); band.className = 'band';
const cut = document.createElement('div'); cut.className = 'cut'; cut.tabIndex = 0;
cut.setAttribute('role', 'slider');
const tagA = document.createElement('div'); tagA.className = 'tag';
const tagB = document.createElement('div'); tagB.className = 'tag';
const skip = document.createElement('div'); skip.className = 'skip-mark';
thumb.append(band, cut, tagA, tagB, skip);
return (thumb._ov = { band, cut, tagA, tagB, skip });
}
function paintOverlay(thumb, p, nums) {
const ov = ensureOverlay(thumb);
thumb.style.setProperty('--ar', p.w / p.h);
const split = p.mode === 'split';
const s = effPos(p), g = S.overlap;
ov.cut.hidden = ov.band.hidden = !split;
ov.cut.setAttribute('aria-label', t('cutLabel'));
ov.skip.hidden = p.mode !== 'skip';
ov.skip.textContent = t('skipMark');
ov.tagA.hidden = p.mode === 'skip';
ov.tagB.hidden = !split;
if (split) {
ov.cut.style.left = (s * 100) + '%';
ov.cut.setAttribute('aria-valuenow', (s * 100).toFixed(1));
const a = Math.min(s - g, s + g), b = Math.max(s - g, s + g);
ov.band.style.left = (a * 100) + '%';
ov.band.style.width = ((b - a) * 100) + '%';
ov.band.className = 'band ' + (g > 0 ? 'overlap' : 'gap');
const first = nums[0], second = nums[1];
const [lNum, rNum] = S.dir === 'ltr' ? [first, second] : [second, first];
ov.tagA.textContent = lNum; ov.tagA.style.left = (s / 2 * 100) + '%';
ov.tagB.textContent = rNum; ov.tagB.style.left = ((1 + s) / 2 * 100) + '%';
} else if (p.mode === 'whole') {
ov.tagA.textContent = nums[0]; ov.tagA.style.left = '50%';
}
}
function bindCut(thumb, getIndex) {
const { cut } = ensureOverlay(thumb);
cut.addEventListener('pointerdown', e => {
if (e.button !== 0) return;
e.preventDefault();
cut.setPointerCapture(e.pointerId);
thumb.classList.add('dragging');
const move = ev => {
const r = thumb.getBoundingClientRect();
const f = clamp((ev.clientX - r.left) / r.width, POS_MIN, POS_MAX);
setPagePos(getIndex(), Math.round(f * 1000) / 1000);
};
const up = () => {
thumb.classList.remove('dragging');
cut.removeEventListener('pointermove', move);
cut.removeEventListener('pointerup', up);
cut.removeEventListener('pointercancel', up);
};
cut.addEventListener('pointermove', move);
cut.addEventListener('pointerup', up);
cut.addEventListener('pointercancel', up);
});
cut.addEventListener('dblclick', () => setPagePos(getIndex(), null));
cut.addEventListener('keydown', e => {
if (e.key !== 'ArrowLeft' && e.key !== 'ArrowRight') return;
e.preventDefault(); e.stopPropagation();
const p = S.pages[getIndex()];
const step = (e.shiftKey ? 0.01 : 0.002) * (e.key === 'ArrowLeft' ? -1 : 1);
setPagePos(getIndex(), Math.round(clamp(effPos(p) + step, POS_MIN, POS_MAX) * 1000) / 1000);
});
}
function setPagePos(i, v) {
S.pages[i].pos = v;
refresh();
}
function setPageMode(i, mode) {
S.pages[i].mode = mode;
refresh();
}
/* ───────── grid ───────── */
const ICON_ZOOM = '<svg viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2.2" stroke-linecap="round"><circle cx="10.5" cy="10.5" r="6.5"/><path d="m20 20-4.8-4.8"/></svg>';
let io, queue = [], active = 0;
function buildGrid() {
if (io) io.disconnect();
queue = [];
el.grid.textContent = '';
const frag = document.createDocumentFragment();
S.pages.forEach((p, i) => {
const card = document.createElement('div');
card.className = 'card';
card.dataset.i = i;
card.innerHTML = `
<div class="stage"><div class="thumb"><canvas></canvas></div></div>
<div class="card-foot">
<div class="pno"><span></span><em></em></div>
<div class="seg">
<button data-mode="split"></button>
<button data-mode="whole"></button>
<button data-mode="skip"></button>
</div>
<button class="icon-btn" data-zoom>${ICON_ZOOM}</button>
</div>`;
const thumb = card.querySelector('.thumb');
card._thumb = thumb;
card._pno = card.querySelector('.pno span');
card._badge = card.querySelector('.pno em');
card._segBtns = card.querySelectorAll('.seg button');
card._zoom = card.querySelector('[data-zoom]');
bindCut(thumb, () => i);
thumb.addEventListener('dblclick', e => { if (!e.target.closest('.cut')) openViewer(i); });
frag.appendChild(card);
});
el.grid.appendChild(frag);
io = new IntersectionObserver(entries => {
for (const e of entries) {
if (!e.isIntersecting) continue;
io.unobserve(e.target);
queue.push(+e.target.dataset.i);
}
pump();
}, { rootMargin: '900px 0px' });
el.grid.querySelectorAll('.card').forEach(c => io.observe(c));
}
el.grid.addEventListener('click', e => {
const card = e.target.closest('.card');
if (!card) return;
const i = +card.dataset.i;
const modeBtn = e.target.closest('.seg button');
if (modeBtn) setPageMode(i, modeBtn.dataset.mode);
else if (e.target.closest('[data-zoom]')) openViewer(i);
});
function pump() {
const gen = S.gen;
while (active < 3 && queue.length) {
const i = queue.shift();
active++;
renderInto(el.grid.children[i]._thumb, i, 2, 900, gen)
.catch(err => console.warn('thumb', i, err))
.finally(() => { active--; pump(); });
}
}
async function renderInto(thumb, i, dprCap, maxW, gen) {
const page = await S.doc.getPage(i + 1);
if (gen !== S.gen) return;
const canvas = thumb.querySelector('canvas');
const cssW = thumb.clientWidth || 300;
const targetW = Math.min(maxW, Math.round(cssW * Math.min(devicePixelRatio || 1, dprCap)));
const base = page.getViewport({ scale: 1 });
const vp = page.getViewport({ scale: targetW / base.width });
const tmp = document.createElement('canvas');
tmp.width = Math.round(vp.width); tmp.height = Math.round(vp.height);
await page.render({ canvasContext: tmp.getContext('2d'), viewport: vp }).promise;
if (gen !== S.gen) return;
canvas.width = tmp.width; canvas.height = tmp.height;
canvas.getContext('2d').drawImage(tmp, 0, 0);
thumb.classList.add('ready');
}
/* ───────── refresh UI ───────── */
function numbering() {
let n = 1;
return S.pages.map(p => {
if (p.mode === 'split') { n += 2; return [n - 2, n - 1]; }
if (p.mode === 'whole') { n += 1; return [n - 1]; }
return [];
});
}
const MODE_KEYS = { split: 'modeSplit', whole: 'modeWhole', skip: 'modeSkip' };
function refresh({ keepDone = false } = {}) {
if (el.workspace.hidden) return;
const nums = numbering();
const total = nums.reduce((a, x) => a + x.length, 0);
let overrides = 0;
S.pages.forEach((p, i) => {
const card = el.grid.children[i];
if (!card) return;
card.className = 'card mode-' + p.mode;
paintOverlay(card._thumb, p, nums[i]);
card._pno.textContent = t('pageN', { n: i + 1 });
card._zoom.setAttribute('aria-label', t('zoomN', { n: i + 1 }));
card._zoom.title = t('zoomTitle');
card._segBtns.forEach(b => { b.setAttribute('aria-pressed', b.dataset.mode === p.mode); b.textContent = t(MODE_KEYS[b.dataset.mode]); });
const custom = p.mode === 'split' && p.pos != null;
card._badge.textContent = custom ? fmtPct(p.pos) : '';
if (p.pos != null) overrides++;
});
const nSplit = S.pages.filter(p => p.mode === 'split').length;
el.fMeta.textContent = t('meta', { n: S.pages.length, size: fmtSize(S.size), s: nSplit });
el.sumIn.textContent = S.pages.length;
el.sumOut.textContent = total;
el.btnClear.disabled = overrides === 0;
el.btnClear.textContent = overrides ? t('clearN', { n: overrides }) : t('clear');
if (!S.detecting) el.btnAuto.textContent = t('auto');
el.posOut.textContent = fmtPct(S.pos);
el.ovOut.textContent = (S.overlap > 0 ? '+' : S.overlap < 0 ? '−' : '') + Math.abs(S.overlap * 100).toFixed(1) + '%';
el.btnBuild.disabled = total === 0 || S.busy;
// 한꺼번에 고르기 — 현재 상태와 일치하는 버튼 표시
const modes = S.pages.map(p => p.mode);
const autoModes = S.pages.map(p => p.w / p.h > LANDSCAPE ? 'split' : 'whole');
const match = {
auto: modes.every((m, i) => m === autoModes[i]),
split: modes.every(m => m === 'split'),
whole: modes.every(m => m === 'whole'),
};
let pressed = match.auto ? 'auto' : match.split ? 'split' : match.whole ? 'whole' : '';
document.querySelectorAll('#bulkSeg button').forEach(b => b.setAttribute('aria-pressed', b.dataset.bulk === pressed));
document.querySelectorAll('#dirSeg button').forEach(b => b.setAttribute('aria-pressed', b.dataset.dir === S.dir));
if (el.viewer.open) paintViewer();
if (!keepDone) el.done.hidden = true;
}
/* ───────── panel controls ───────── */
el.pos.addEventListener('input', () => { S.pos = +el.pos.value / 100; refresh(); });
el.overlap.addEventListener('input', () => { S.overlap = +el.overlap.value / 100; refresh(); });
$('#dirSeg').addEventListener('click', e => {
const b = e.target.closest('button'); if (!b) return;
S.dir = b.dataset.dir; refresh();
});
$('#bulkSeg').addEventListener('click', e => {
const b = e.target.closest('button'); if (!b) return;
S.pages.forEach(p => {
p.mode = b.dataset.bulk === 'auto' ? (p.w / p.h > LANDSCAPE ? 'split' : 'whole') : b.dataset.bulk;
});
refresh();
});
el.btnClear.addEventListener('click', () => { S.pages.forEach(p => p.pos = null); refresh(); toast(t('tCleared')); });
el.btnOther.addEventListener('click', () => el.file.click());
/* ───────── auto detect gutter ───────── */
el.btnAuto.addEventListener('click', async () => {
if (S.detecting) { S.detecting = false; return; }
const targets = S.pages.map((p, i) => i).filter(i => S.pages[i].mode === 'split');
if (!targets.length) { toast(t('tNoSplit')); return; }
S.detecting = true;
const gen = S.gen;
let found = 0, done = 0;
for (const i of targets) {
if (!S.detecting || gen !== S.gen) break;
el.btnAuto.textContent = t('autoBusy', { done, total: targets.length });
try {
const f = await detectGutter(i);
if (gen !== S.gen) break;
if (f != null) { S.pages[i].pos = Math.round(f * 1000) / 1000; found++; }
} catch (err) { console.warn('detect', i, err); }
done++;
if (done % 4 === 0) refresh();
}
S.detecting = false;
el.btnAuto.textContent = t('auto');
if (gen !== S.gen) return;
refresh();
toast(found ? t('tFound', { n: found }) : t('tNotFound'), 3600);
});
async function detectGutter(i) {
const page = await S.doc.getPage(i + 1);
const base = page.getViewport({ scale: 1 });
const vp = page.getViewport({ scale: 600 / base.width });
const c = document.createElement('canvas');