2007-12-05 18:51:12 -08:00
|
|
|
<!DOCTYPE HTML>
|
|
|
|
|
<title>Canvas test: 2d.composite.image.destination-atop</title>
|
|
|
|
|
<script src="/MochiKit/MochiKit.js"></script>
|
|
|
|
|
<script src="/tests/SimpleTest/SimpleTest.js"></script>
|
2008-08-10 21:01:14 -07:00
|
|
|
<link rel="stylesheet" href="/tests/SimpleTest/test.css">
|
2007-12-05 18:51:12 -08:00
|
|
|
<body>
|
|
|
|
|
<canvas id="c" width="100" height="50"><p class="fallback">FAIL (fallback content)</p></canvas>
|
|
|
|
|
<script>
|
2008-08-10 21:01:14 -07:00
|
|
|
function isPixel(ctx, x,y, r,g,b,a, pos, colour, d) {
|
2007-12-05 18:51:12 -08:00
|
|
|
var pixel = ctx.getImageData(x, y, 1, 1);
|
|
|
|
|
var pr = pixel.data[0],
|
|
|
|
|
pg = pixel.data[1],
|
|
|
|
|
pb = pixel.data[2],
|
|
|
|
|
pa = pixel.data[3];
|
2008-08-10 21:01:14 -07:00
|
|
|
ok(r-d <= pr && pr <= r+d &&
|
2007-12-05 18:51:12 -08:00
|
|
|
g-d <= pg && pg <= g+d &&
|
|
|
|
|
b-d <= pb && pb <= b+d &&
|
|
|
|
|
a-d <= pa && pa <= a+d,
|
|
|
|
|
"pixel "+pos+" is "+pr+","+pg+","+pb+","+pa+"; expected "+colour+" +/- "+d);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
SimpleTest.waitForExplicitFinish();
|
|
|
|
|
MochiKit.DOM.addLoadEvent(function () {
|
|
|
|
|
|
|
|
|
|
var canvas = document.getElementById('c');
|
|
|
|
|
var ctx = canvas.getContext('2d');
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
ctx.fillStyle = 'rgba(0, 255, 255, 0.5)';
|
|
|
|
|
ctx.fillRect(0, 0, 100, 50);
|
|
|
|
|
ctx.globalCompositeOperation = 'destination-atop';
|
|
|
|
|
ctx.drawImage(document.getElementById('yellow75.png'), 0, 0);
|
|
|
|
|
isPixel(ctx, 50,25, 127,255,127,191, "50,25", "127,255,127,191", 5);
|
|
|
|
|
|
2008-08-10 21:01:14 -07:00
|
|
|
SimpleTest.finish();
|
|
|
|
|
|
2007-12-05 18:51:12 -08:00
|
|
|
});
|
|
|
|
|
</script>
|
|
|
|
|
<img src="image_yellow75.png" id="yellow75.png" class="resource">
|
|
|
|
|
|
