2007-12-05 18:51:12 -08:00
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<!DOCTYPE HTML>
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<title>Canvas test: toDataURL.primarycolours</title>
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2008-08-10 21:01:14 -07:00
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<!-- Testing: toDataURL handles simple colours correctly -->
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2007-12-05 18:51:12 -08:00
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<script src="/MochiKit/MochiKit.js"></script>
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<script src="/tests/SimpleTest/SimpleTest.js"></script>
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2008-08-10 21:01:14 -07:00
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<link rel="stylesheet" href="/tests/SimpleTest/test.css">
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2007-12-05 18:51:12 -08:00
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<body>
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<canvas id="c" width="100" height="50"><p class="fallback">FAIL (fallback content)</p></canvas>
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<script>
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2008-08-10 21:01:14 -07:00
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function isPixel(ctx, x,y, r,g,b,a, pos, colour, d) {
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2007-12-05 18:51:12 -08:00
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var pixel = ctx.getImageData(x, y, 1, 1);
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var pr = pixel.data[0],
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pg = pixel.data[1],
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pb = pixel.data[2],
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pa = pixel.data[3];
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2008-08-10 21:01:14 -07:00
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ok(r-d <= pr && pr <= r+d &&
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2007-12-05 18:51:12 -08:00
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g-d <= pg && pg <= g+d &&
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b-d <= pb && pb <= b+d &&
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a-d <= pa && pa <= a+d,
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"pixel "+pos+" is "+pr+","+pg+","+pb+","+pa+"; expected "+colour+" +/- "+d);
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}
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function deferTest() {
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_deferred = true;
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}
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function wrapFunction(f) {
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return function () {
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f.apply(null, arguments);
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SimpleTest.finish();
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}
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}
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SimpleTest.waitForExplicitFinish();
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MochiKit.DOM.addLoadEvent(function () {
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var canvas = document.getElementById('c');
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var ctx = canvas.getContext('2d');
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ctx.fillStyle = '#ff0';
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ctx.fillRect(0, 0, 25, 40);
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ctx.fillStyle = '#0ff';
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ctx.fillRect(25, 0, 50, 40);
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ctx.fillStyle = '#00f';
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ctx.fillRect(75, 0, 25, 40);
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ctx.fillStyle = '#fff';
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ctx.fillRect(0, 40, 100, 10);
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2008-08-10 21:01:14 -07:00
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var data = canvas.toDataURL();
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ctx.fillStyle = '#f00';
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ctx.fillRect(0, 0, 100, 50);
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2007-12-05 18:51:12 -08:00
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var img = new Image();
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deferTest();
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img.onload = wrapFunction(function ()
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{
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ctx.drawImage(img, 0, 0);
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netscape.security.PrivilegeManager.enablePrivilege('UniversalBrowserRead');
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isPixel(ctx, 12,20, 255,255,0,255, "12,20", "255,255,0,255", 0);
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isPixel(ctx, 50,20, 0,255,255,255, "50,20", "0,255,255,255", 0);
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isPixel(ctx, 87,20, 0,0,255,255, "87,20", "0,0,255,255", 0);
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isPixel(ctx, 50,45, 255,255,255,255, "50,45", "255,255,255,255", 0);
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});
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2008-08-10 21:01:14 -07:00
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img.src = data;
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2007-12-05 18:51:12 -08:00
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});
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</script>
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