24 lines
690 B
HTML
24 lines
690 B
HTML
<!DOCTYPE html>
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<body>
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<div id="image"></div>
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<script>
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const img = document.createElement('IMG');
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img.src = 'circles.png';
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var observer = new PerformanceObserver(function(list, obj) {
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var paintEntries = list.getEntries();
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for (let i = 0; i < paintEntries.length; i++) {
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// postMessage doesn't allow sending the entry object over directly
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var dataToSend = {
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"entryType": paintEntries[i]["entryType"],
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"name": paintEntries[i]["name"]
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};
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parent.postMessage(dataToSend, '*');
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}
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});
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observer.observe({"type": "paint"});
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document.getElementById('image').appendChild(img);
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</script>
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</body>
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</html>
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