test_2d.composite.canvas.soft-light.html

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<!DOCTYPE HTML>

<title>Canvas test: 2d.composite.canvas.xor</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');

var canvas2 = document.createElement('canvas');

canvas2.width = canvas.width;

canvas2.height = canvas.height;

var ctx2 = canvas2.getContext('2d');

ctx2.drawImage(document.getElementById('yellow75.png'), 0, 0);

ctx.fillStyle = 'rgba(0, 255, 255, 0.5)';

ctx.fillRect(0, 0, 100, 50);

ctx.globalCompositeOperation = 'xor';

ctx.drawImage(canvas2, 0, 0);

isPixel(ctx, 50,25, 191,255,63,127, "50,25", "191,255,63,127", 5);

SimpleTest.finish();

});

</script>

<img src="image_yellow75.png" id="yellow75.png" class="resource">