gecko-dev/layout/reftests/image-element/canvas-outside-document-inv...

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<!--
Any copyright is dedicated to the Public Domain.
http://creativecommons.org/licenses/publicdomain/
Test that painting in an out-of-document canvas causes a repaint.
-->
<!DOCTYPE html>
<html class="reftest-wait">
<body style="background: -moz-element(#e) darkred">
<script>
var canvas = document.createElement("canvas");
canvas.width = canvas.height = 1;
var ctx = canvas.getContext('2d');
ctx.fillStyle = "red";
ctx.fillRect(0, 0, 1, 1);
window.addEventListener("MozReftestInvalidate", function () {
setTimeout(function () {
ctx.fillStyle = "white";
ctx.fillRect(0, 0, 1, 1);
document.documentElement.className = "";
}, 0);
});
document.mozSetImageElement("e", canvas);
</script>
</body>
</html>