blob: 1af054ed637283f7acff355b52a407213d0fbdbf [file] [log] [blame]
<!DOCTYPE html>
<title>Canvas test: 2d.gradient.interpolate.alpha</title>
<meta name="author" content="Philip Taylor">
<script src="../common/canvas-tests.js"></script>
<link rel="stylesheet" href="../common/canvas-tests.css">
<body class="show_output">
<h1><a href="index.2d.html">2d</a>.<a href="index.2d.gradient.html">gradient</a>.<a href="index.2d.gradient.interpolate.html">interpolate</a>.alpha</h1>
<p class="desc"></p>
<div class="refs">Spec references:
<ul>
<li><a href="../annotated-spec/canvas.html#testrefs.2d.gradient.interpolate.linear">2d.gradient.interpolate.linear</a>
</ul>
</div>
<p class="output">Actual output:</p>
<canvas id="c" class="output" width="100" height="50"><p class="fallback">FAIL (fallback content)</p></canvas>
<p class="output expectedtext">Expected output:<p><img src="resources/2d.gradient.interpolate.alpha.png" class="output expected" id="expected" alt="">
<ul id="d"></ul>
<script>
_addTest(function(canvas, ctx) {
ctx.fillStyle = '#ff0';
ctx.fillRect(0, 0, 100, 50);
var g = ctx.createLinearGradient(0, 0, 100, 0);
g.addColorStop(0, 'rgba(0,0,255, 0)');
g.addColorStop(1, 'rgba(0,0,255, 1)');
ctx.fillStyle = g;
ctx.fillRect(0, 0, 100, 50);
_assertPixelApprox(canvas, 25,25, 191,191,63,255, "25,25", "191,191,63,255", 3);
_assertPixelApprox(canvas, 50,25, 127,127,127,255, "50,25", "127,127,127,255", 3);
_assertPixelApprox(canvas, 75,25, 63,63,191,255, "75,25", "63,63,191,255", 3);
});
</script>