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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8" />
<title>M3Grounder Bbox Annotator</title>
<style>
:root{
--accent:#4f7ef8; --bg:#f5f5f7; --border:#dcdce2; --text:#111; --muted:#70707a;
}
*{box-sizing:border-box;}
body{font-family:-apple-system,'Inter',sans-serif;margin:0;background:var(--bg);color:var(--text);display:flex;height:100vh;overflow:hidden;}
/* ── Left: image + canvas ── */
.stage{flex:1;display:flex;flex-direction:column;background:#1a1a1e;overflow:auto;padding:24px;align-items:center;}
.stage-toolbar{width:100%;max-width:1100px;display:flex;gap:10px;align-items:center;margin-bottom:14px;flex-wrap:wrap;}
.stage-toolbar input[type=file]{color:#fff;font-size:13px;}
.stage-toolbar .hint{color:#aaa;font-size:12px;margin-left:auto;}
.canvas-wrap{position:relative;max-width:1100px;width:100%;}
.canvas-wrap img{width:100%;display:block;border-radius:8px;}
.canvas-wrap canvas{position:absolute;top:0;left:0;width:100%;height:100%;cursor:crosshair;border-radius:8px;}
.empty-state{color:#888;font-size:14px;margin-top:80px;text-align:center;}
/* ── Right: panel ── */
.panel{width:380px;background:#fff;border-left:1px solid var(--border);display:flex;flex-direction:column;padding:20px;overflow-y:auto;flex-shrink:0;}
.panel h2{font-size:15px;margin:0 0 4px;}
.panel .sub{font-size:12px;color:var(--muted);margin-bottom:18px;}
.field{margin-bottom:14px;}
.field label{display:block;font-size:11px;font-weight:600;text-transform:uppercase;letter-spacing:.03em;color:var(--muted);margin-bottom:5px;}
.field input,.field select{width:100%;padding:8px 10px;border:1px solid var(--border);border-radius:7px;font-size:13px;font-family:inherit;}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;border:none;border-radius:8px;padding:9px 14px;font-size:13px;font-weight:500;cursor:pointer;transition:opacity .15s;}
.btn-primary{background:var(--accent);color:#fff;}
.btn-ghost{background:#eee;color:#222;}
.btn-danger{background:#fde8e8;color:#c0392b;}
.btn:hover{opacity:.85;}
.btn:disabled{opacity:.35;cursor:not-allowed;}
.btn-row{display:flex;gap:8px;margin-bottom:18px;}
.gran-tabs{display:flex;gap:6px;margin-bottom:16px;}
.gran-tabs button{flex:1;padding:8px 0;border-radius:999px;border:1px solid var(--border);background:#fff;font-size:12px;font-weight:600;cursor:pointer;}
.gran-tabs button.active{background:var(--accent);color:#fff;border-color:var(--accent);}
.span-list{border-top:1px solid var(--border);padding-top:14px;margin-top:4px;}
.span-card{border:1px solid var(--border);border-radius:10px;padding:12px;margin-bottom:10px;}
.span-card-head{display:flex;align-items:center;justify-content:between;gap:8px;margin-bottom:8px;}
.span-color-dot{width:12px;height:12px;border-radius:50%;flex-shrink:0;}
.span-card-head input{flex:1;border:none;font-size:13px;font-weight:600;background:transparent;padding:2px;}
.span-card-head input:focus{outline:1px solid var(--accent);border-radius:4px;}
.span-remove{cursor:pointer;color:#c0392b;font-size:13px;background:none;border:none;flex-shrink:0;}
.bbox-row{display:flex;justify-content:space-between;font-size:11px;color:var(--muted);padding:3px 0;font-family:'SF Mono',monospace;}
.bbox-row .ok{color:#1e8a5e;}
.bbox-row .missing{color:#c0392b;}
.select-span-hint{font-size:11px;color:var(--muted);margin-top:8px;background:#f5f5f7;padding:8px 10px;border-radius:7px;line-height:1.5;}
.active-span-badge{display:flex;align-items:center;gap:6px;font-size:12px;font-weight:600;padding:8px 10px;border-radius:8px;margin-bottom:12px;}
textarea#jsonOut{width:100%;height:220px;font-family:'SF Mono',monospace;font-size:11px;border:1px solid var(--border);border-radius:8px;padding:10px;resize:vertical;margin-top:8px;background:#fafafa;}
.output-section{border-top:1px solid var(--border);margin-top:18px;padding-top:14px;}
</style>
</head>
<body>
<div class="stage">
<div class="stage-toolbar">
<input type="file" id="imgInput" accept="image/*">
<span class="hint" id="imgDims"></span>
</div>
<div class="canvas-wrap" id="canvasWrap" style="display:none;">
<img id="docImg" />
<canvas id="overlay"></canvas>
</div>
<div class="empty-state" id="emptyState">Load a document image to start annotating.</div>
</div>
<div class="panel">
<h2>M3Grounder Bbox Annotator</h2>
<div class="sub">Draw boxes → exports % coordinates matching your EXAMPLES JSON.</div>
<div class="field">
<label>Example ID</label>
<input id="exampleId" placeholder="e.g. finance" value="finance">
</div>
<div class="field">
<label>Question</label>
<input id="exampleQ" placeholder="Question text...">
</div>
<div class="btn-row">
<button class="btn btn-primary" id="addSpanBtn">+ Add Span</button>
</div>
<div id="activeSpanBadge"></div>
<div class="gran-tabs">
<button data-gran="phrase" class="active">Phrase</button>
<button data-gran="line">Line</button>
<button data-gran="block">Block</button>
</div>
<div class="select-span-hint">Click a span below to select it, pick a granularity tab, then drag a box on the image. Re-dragging replaces that box.</div>
<div class="span-list" id="spanList"></div>
<div class="output-section">
<div class="btn-row">
<button class="btn btn-ghost" id="genJsonBtn">Generate JSON</button>
<button class="btn btn-ghost" id="copyJsonBtn">Copy</button>
</div>
<textarea id="jsonOut" placeholder="Click 'Generate JSON' to see output here..." readonly></textarea>
</div>
</div>
<script>
const COLORS = [
{border:'#4f7ef8', label:'blue'},
{border:'#ff6b35', label:'orange'},
{border:'#48c78e', label:'green'},
{border:'#f5a623', label:'gold'},
{border:'#a855f7', label:'purple'},
];
let spans = []; // {id, text, bbox:{phrase,line,block}}
let activeSpanIdx = null;
let activeGran = 'phrase';
let spanCounter = 0;
const imgInput = document.getElementById('imgInput');
const docImg = document.getElementById('docImg');
const overlay = document.getElementById('overlay');
const canvasWrap = document.getElementById('canvasWrap');
const emptyState = document.getElementById('emptyState');
const imgDims = document.getElementById('imgDims');
const ctx = overlay.getContext('2d');
imgInput.addEventListener('change', (e) => {
const file = e.target.files[0];
if (!file) return;
const url = URL.createObjectURL(file);
docImg.src = url;
docImg.onload = () => {
canvasWrap.style.display = 'block';
emptyState.style.display = 'none';
resizeCanvas();
imgDims.textContent = `${docImg.naturalWidth} × ${docImg.naturalHeight}px`;
redraw();
};
});
function resizeCanvas(){
overlay.width = docImg.clientWidth;
overlay.height = docImg.clientHeight;
}
window.addEventListener('resize', () => { resizeCanvas(); redraw(); });
// ── Drag to draw ──
let dragging = false, startX=0, startY=0;
overlay.addEventListener('mousedown', (e) => {
if (activeSpanIdx === null) { alert('Select or add a span first.'); return; }
const rect = overlay.getBoundingClientRect();
startX = e.clientX - rect.left;
startY = e.clientY - rect.top;
dragging = true;
});
overlay.addEventListener('mousemove', (e) => {
if (!dragging) return;
const rect = overlay.getBoundingClientRect();
const curX = e.clientX - rect.left;
const curY = e.clientY - rect.top;
redraw();
ctx.strokeStyle = COLORS[activeSpanIdx % COLORS.length].border;
ctx.lineWidth = 2;
ctx.setLineDash([5,3]);
ctx.strokeRect(Math.min(startX,curX), Math.min(startY,curY), Math.abs(curX-startX), Math.abs(curY-startY));
ctx.setLineDash([]);
});
overlay.addEventListener('mouseup', (e) => {
if (!dragging) return;
dragging = false;
const rect = overlay.getBoundingClientRect();
const curX = e.clientX - rect.left;
const curY = e.clientY - rect.top;
const x = Math.min(startX, curX), y = Math.min(startY, curY);
const w = Math.abs(curX - startX), h = Math.abs(curY - startY);
if (w < 4 || h < 4) { redraw(); return; } // ignore accidental clicks
const pctX = (x / overlay.width) * 100;
const pctY = (y / overlay.height) * 100;
const pctW = (w / overlay.width) * 100;
const pctH = (h / overlay.height) * 100;
spans[activeSpanIdx].bbox[activeGran] = {
x: round2(pctX), y: round2(pctY), w: round2(pctW), h: round2(pctH)
};
renderSpanList();
redraw();
});
function round2(n){ return Math.round(n*100)/100; }
function redraw(){
ctx.clearRect(0,0,overlay.width,overlay.height);
spans.forEach((span, idx) => {
const color = COLORS[idx % COLORS.length].border;
const gran = span.bbox[activeGran];
if (gran) {
const x = (gran.x/100)*overlay.width;
const y = (gran.y/100)*overlay.height;
const w = (gran.w/100)*overlay.width;
const h = (gran.h/100)*overlay.height;
ctx.strokeStyle = color;
ctx.lineWidth = idx === activeSpanIdx ? 3 : 1.5;
ctx.fillStyle = color + '26'; // ~15% alpha hex
ctx.fillRect(x,y,w,h);
ctx.strokeRect(x,y,w,h);
}
});
}
// ── Span management ──
document.getElementById('addSpanBtn').addEventListener('click', () => {
spans.push({
id: spanCounter++,
text: '',
bbox: { phrase: null, line: null, block: null }
});
activeSpanIdx = spans.length - 1;
renderSpanList();
renderBadge();
});
function renderBadge(){
const el = document.getElementById('activeSpanBadge');
if (activeSpanIdx === null) { el.innerHTML = ''; return; }
const c = COLORS[activeSpanIdx % COLORS.length];
el.innerHTML = `<div class="active-span-badge" style="background:${c.border}1a;color:${c.border};">
<span class="span-color-dot" style="background:${c.border};"></span>
Drawing: Span ${activeSpanIdx+1} — ${activeGran}
</div>`;
}
function renderSpanList(){
const list = document.getElementById('spanList');
list.innerHTML = '';
spans.forEach((span, idx) => {
const color = COLORS[idx % COLORS.length].border;
const card = document.createElement('div');
card.className = 'span-card';
card.style.borderColor = idx === activeSpanIdx ? color : '';
card.style.boxShadow = idx === activeSpanIdx ? `0 0 0 1px ${color}` : '';
card.innerHTML = `
<div class="span-card-head">
<span class="span-color-dot" style="background:${color};"></span>
<input type="text" placeholder="span text, e.g. approximately 91%" value="${span.text.replace(/"/g,'"')}" data-idx="${idx}" class="span-text-input">
<button class="span-remove" data-idx="${idx}">✕</button>
</div>
<div class="bbox-row"><span>phrase</span><span class="${span.bbox.phrase?'ok':'missing'}">${span.bbox.phrase ? `x:${span.bbox.phrase.x} y:${span.bbox.phrase.y} w:${span.bbox.phrase.w} h:${span.bbox.phrase.h}` : 'not set'}</span></div>
<div class="bbox-row"><span>line</span><span class="${span.bbox.line?'ok':'missing'}">${span.bbox.line ? `x:${span.bbox.line.x} y:${span.bbox.line.y} w:${span.bbox.line.w} h:${span.bbox.line.h}` : 'not set'}</span></div>
<div class="bbox-row"><span>block</span><span class="${span.bbox.block?'ok':'missing'}">${span.bbox.block ? `x:${span.bbox.block.x} y:${span.bbox.block.y} w:${span.bbox.block.w} h:${span.bbox.block.h}` : 'not set'}</span></div>
`;
card.addEventListener('click', (e) => {
if (e.target.tagName === 'INPUT' || e.target.classList.contains('span-remove')) return;
activeSpanIdx = idx;
renderSpanList();
renderBadge();
redraw();
});
list.appendChild(card);
});
list.querySelectorAll('.span-text-input').forEach(inp => {
inp.addEventListener('input', (e) => {
spans[+e.target.dataset.idx].text = e.target.value;
});
});
list.querySelectorAll('.span-remove').forEach(btn => {
btn.addEventListener('click', (e) => {
const idx = +e.target.dataset.idx;
spans.splice(idx, 1);
if (activeSpanIdx === idx) activeSpanIdx = null;
else if (activeSpanIdx > idx) activeSpanIdx--;
renderSpanList();
renderBadge();
redraw();
});
});
renderBadge();
}
// ── Granularity tabs ──
document.querySelectorAll('.gran-tabs button').forEach(btn => {
btn.addEventListener('click', () => {
document.querySelectorAll('.gran-tabs button').forEach(b => b.classList.remove('active'));
btn.classList.add('active');
activeGran = btn.dataset.gran;
renderBadge();
redraw();
});
});
// ── JSON export ──
document.getElementById('genJsonBtn').addEventListener('click', () => {
const id = document.getElementById('exampleId').value || 'example';
const q = document.getElementById('exampleQ').value || '';
const out = {
id,
label: id.charAt(0).toUpperCase() + id.slice(1),
image: `static/images/qual/originals/${id}_doc.png`,
question: q,
spans: spans.map(s => ({
text: s.text,
bbox: {
phrase: s.bbox.phrase,
line: s.bbox.line,
block: s.bbox.block
}
}))
};
document.getElementById('jsonOut').value = JSON.stringify(out, null, 2);
});
document.getElementById('copyJsonBtn').addEventListener('click', () => {
const ta = document.getElementById('jsonOut');
ta.select();
document.execCommand('copy');
});
</script>
</body>
</html>