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🤖 Add interactive zooming, panning, and reset zoom button to benchmark dashboard #1

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🤖 Add interactive zooming, panning, and reset zoom button to benchmark dashboard #1

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3886ebd
🤖 Add interactive zooming, panning, and reset zoom button to benchmar…
sffc Aug 13, 2026
080f3be
🤖 docs: add animated screencast GIF for dashboard zoom & pan
sffc Aug 13, 2026
7047219
🤖 cleanup: remove gif asset from repo branch (hosted via release asset)
sffc Aug 13, 2026
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49 changes: 46 additions & 3 deletions src/default_index_html.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -105,6 +105,7 @@ export const DEFAULT_INDEX_HTML = String.raw`<!DOCTYPE html>
</footer>

<script src="https://cdn.jsdelivr.net/npm/chart.js@2.9.2/dist/Chart.min.js"></script>
<script src="https://cdn.jsdelivr.net/npm/chartjs-plugin-zoom@0.7.7/dist/chartjs-plugin-zoom.min.js"></script>
<script src="data.js"></script>
<script id="main-script">
'use strict';
Expand Down Expand Up @@ -165,9 +166,24 @@ export const DEFAULT_INDEX_HTML = String.raw`<!DOCTYPE html>
function renderAllChars(dataSets) {

function renderGraph(parent, name, dataset) {
const container = document.createElement('div');
container.style.display = 'flex';
container.style.flexDirection = 'column';
container.style.alignItems = 'center';
container.style.marginBottom = '16px';
parent.appendChild(container);

const resetBtn = document.createElement('button');
resetBtn.textContent = 'Reset Zoom';
resetBtn.style.alignSelf = 'flex-end';
resetBtn.style.marginBottom = '4px';
resetBtn.style.padding = '2px 8px';
resetBtn.style.fontSize = '0.75rem';
container.appendChild(resetBtn);

const canvas = document.createElement('canvas');
canvas.className = 'benchmark-chart';
parent.appendChild(canvas);
container.appendChild(canvas);

const color = toolColors[dataset.length > 0 ? dataset[0].tool : '_'];
const data = {
Expand Down Expand Up @@ -203,6 +219,18 @@ export const DEFAULT_INDEX_HTML = String.raw`<!DOCTYPE html>
}
],
},
plugins: {
zoom: {
pan: {
enabled: true,
mode: 'x',
},
zoom: {
enabled: true,
mode: 'x',
},
},
},
tooltips: {
callbacks: {
afterTitle: items => {
Expand All @@ -217,6 +245,15 @@ export const DEFAULT_INDEX_HTML = String.raw`<!DOCTYPE html>
if (range) {
label += ' (' + range + ')';
}
if (item.index > 0) {
const prev = dataset[item.index - 1].bench.value;
const curr = dataset[item.index].bench.value;
if (prev > 0) {
const diff = ((curr - prev) / prev) * 100;
const sign = diff > 0 ? '+' : '';
label += ' (' + sign + diff.toFixed(2) + '%)';
}
}
return label;
},
afterLabel: item => {
Expand All @@ -236,11 +273,17 @@ export const DEFAULT_INDEX_HTML = String.raw`<!DOCTYPE html>
},
};

new Chart(canvas, {
const chart = new Chart(canvas, {
type: 'line',
data,
options,
});

resetBtn.onclick = () => {
if (chart && typeof chart.resetZoom === 'function') {
chart.resetZoom();
}
};
}

function renderBenchSet(name, benchSet, main) {
Expand All @@ -258,7 +301,7 @@ export const DEFAULT_INDEX_HTML = String.raw`<!DOCTYPE html>
setElem.appendChild(graphsElem);

for (const [benchName, benches] of benchSet.entries()) {
renderGraph(graphsElem, benchName, benches)
renderGraph(graphsElem, benchName, benches);
}
}

Expand Down