gecko-dev/layout/reftests/bugs/630835-1.html
Robert O'Callahan 6d646878f1 Bug 630835. Make BuildLayer responsible for setting a visible region on the layer, and let FrameLayerBuilder only reduce it. r=tnikkel,a=blocking
This avoids problems with FrameLayerBuilder making the visible region bigger than we expected, invalidating CONTENT_OPAQUE flags set on the layer.
In particular, we had been using TransformBounds to compute the new visible region, and for non-axis-aligned transforms this gives us a visible
region which contains areas not actually painted by the layer contents.
2011-02-23 18:38:09 +13:00

45 lines
1.1 KiB
HTML

<!DOCTYPE HTML>
<html class="reftest-wait">
<head>
<style>
#d {
background: red;
position: absolute;
top: 8px;
left: 8px;
height: 200px;
width: 800px;
transform: rotate(40deg);
-moz-transform: rotate(40deg);
}
#d2 {
background: white;
position: absolute;
top: 6px;
left: 6px;
height: 204px;
width: 804px;
transform: rotate(45deg);
-moz-transform: rotate(45deg);
}
</style>
</head>
<body>
<script>
function doTest() {
// The first rotation here makes the transform active. The second rotation
// sets it back where it belongs.
var d = document.getElementById("d");
d.style.transform = d.style.MozTransform = 'rotate(45deg)';
document.documentElement.removeAttribute('class');
}
window.addEventListener("MozReftestInvalidate", doTest, false);
</script>
<div id="d">test</div>
<!-- d2 covers up d completely so that we don't get a reftest failure due to a difference
between the rendering of an 'active transform' (transformed via layers) vs an inactive
transform (transformed via D2D or cairo) -->
<div id="d2">test</div>
</body>
</html>