зеркало из https://github.com/mozilla/gecko-dev.git
23 строки
814 B
HTML
23 строки
814 B
HTML
<!DOCTYPE html>
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<meta charset=utf-8>
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<script src="imgutils.js"></script>
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<img id="img" src="animated1.gif">
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<script>
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let observer = new ImageDecoderObserverStub();
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observer.decodeComplete = () => {
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parent.postMessage("decodeComplete", "*");
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};
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observer.loadComplete = () => {
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parent.postMessage("loadComplete", "*");
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};
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observer = SpecialPowers.wrapCallbackObject(observer);
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const gObserver = SpecialPowers.Cc["@mozilla.org/image/tools;1"]
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.getService(SpecialPowers.Ci.imgITools)
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.createScriptedObserver(observer);
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const img = document.getElementById("img");
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SpecialPowers.wrap(img).addObserver(gObserver);
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window.addEventListener("unload", () => {
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SpecialPowers.wrap(img).removeObserver(gObserver);
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});
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</script>
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