<!
DOCTYPE HTML>
<
title>
Canvas test: 2d.composite.solid.lighter</
title>
<
script src=
"/tests/SimpleTest/SimpleTest.js"></
script>
<
link rel=
"stylesheet" href=
"/tests/SimpleTest/test.css">
<
body>
<
canvas id=
"c" width=
"100" height=
"50"><p class=
"fallback">FAIL (fallback content)</p></
canvas>
<
script>
function isPixel(ctx, x,y, r,g,b,a, pos, colour, d) {
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];
ok(r-d <= pr && pr <= r+d &&
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();
addLoadEvent(function () {
var canvas = document.getElementById(
'c');
var ctx =
canvas.getContext(
'2d');
ctx.fillStyle =
'rgba(0, 255, 255, 1.0)';
ctx.fillRect(0, 0, 100, 50);
ctx.globalCompositeOperation =
'exclusion';
ctx.fillStyle =
'rgba(255, 255, 0, 1.0)';
ctx.fillRect(0, 0, 100, 50);
isPixel(ctx, 50,25, 255,0,255,255,
"50,25",
"255,0,255,255", 5);
SimpleTest.finish();
});
</
script>
