<!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 text = "I"; var colorTop = 'rgba(255,0,0,1)'; var colorBottom = 'rgba(0,255,0,1)'; var inset = 10; var grad = ctx.createLinearGradient(inset, inset, inset, inset + 30); // add color stops grad.addColorStop(0, colorTop); grad.addColorStop(1, colorBottom); ctx.fillStyle = grad; ctx.textBaseline = 'top'; ctx.font = '110px sans-serif' ctx.fillText(text, -10, -20); ctx.fillText(text, -8, -20); ctx.fillText(text, -6, -20); ctx.fillText(text, -4, -20); ctx.fillText(text, -2, -20); ctx.fillText(text, 0, -20); ctx.fillText(text, 2, -20); ctx.fillText(text, 4, -20); ctx.fillText(text, 6, -20); isPixel(ctx, 15,0, 255,0,0,255, "15,0", "255,0,0,255", 5); isPixel(ctx, 15,49, 0,255,0,255, "15,49", "0,255,0,255", 5); SimpleTest.finish(); }); </script>