<!DOCTYPE html>
<script src="../resources/text-based-repaint.js"></script>
<script>
function repaintTest() {
document.getElementById('fixed').style.height = '200px';
}
onload = function() {
// Scroll before repaint test to test correct scroll offset of invalidation rect
// for fixed-position element when it needs repaint.
window.scrollTo(0, 400);
runRepaintAndPixelTest();
};
</script>
<style>
#indicator {
position: absolute;
height: 220px;
width: 120px;
top: 400px;
left: 0;
background-color: red;
}
#absolute {
position: absolute;
top: 2000px;
width: 1px;
height: 1px;
background-color: red;
backface-visibility: hidden;
z-index: 1000;
}
#fixed {
position: fixed;
top: 0;
left: 0;
width: 100px;
height: 100px;
border: 10px solid blue;
background-color: green;
}
</style>
Tests paint invalidation of fixed element under a composited absolute element on resize after scrolled.
Passes if there is a 100x200 green rectangle with blue border and no red.
<div id="indicator"></div>
<div id="absolute">
<div id="fixed">
</div>
</div>