// Assert that discarding isn't enabled, which might make this test go orange.
ok(!getImagePref(DISCARD_ENABLED_PREF), "discarding should NOT be enabled here");
// We want to make sure d-o-d is enabled, since that's what we're testing var oldDODPref = getImagePref(DECODEONDRAW_ENABLED_PREF);
setImagePref(DECODEONDRAW_ENABLED_PREF, true);
// We're relying on very particular behavior for certain images - clear the
// image cache.
clearImageCache();
// In order to work around the effects introduced in bug 512435, we only load
// the image after window onload fires
function windowLoadHandler()
{
// Set the source and an onload handler var image = document.getElementById("testimage");
image.src = "schrep.png";
image.onload = imageLoadHandler;
}
function imageLoadHandler()
{
// The image is hidden, so it should not be decoded
ok(!isFrameDecoded("testimage"), "image should not be decoded");
// Make the image visible var image = document.getElementById("testimage");
image.style.display = "inline";
// Wait for the image to decode
setTimeout(function() {
tryToFinish();
}, 500);
}
function tryToFinish()
{
// If it hasn't happened yet, wait longer. If it never happens, this test
// will timeout after 300 seconds...
if (!isFrameDecoded("testimage")) {
setTimeout(function() {
tryToFinish();
}, 500);
return;
}
// By definition, the image is decoded here. Give ourselves a pat on the back.
ok(isFrameDecoded("testimage"), "image should be decoded");
// Restore the decode-on-draw pref
setImagePref(DECODEONDRAW_ENABLED_PREF, oldDODPref);
// All done
SimpleTest.finish();
}
// Set our onload handler, making sure we have focus
window.onload = SimpleTest.waitForFocus(windowLoadHandler);
</script>
</pre>
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