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<!DOCTYPE html>
<title>Canvas test: 2d.imageData.put.dirty.rect2</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.imageData.html">imageData</a>.<a href="index.2d.imageData.put.html">put</a>.<a href="index.2d.imageData.put.dirty.html">dirty</a>.rect2</h1>
<p class="desc">putImageData() only modifies areas inside the dirty rectangle, using x and y</p>
<div class="refs">Spec references:
<ul>
<li><a href="../annotated-spec/canvas.html#testrefs.2d.imageData.put.normal">2d.imageData.put.normal</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/green-100x50.png" class="output expected" id="expected" alt="">
<ul id="d"></ul>
<script>
_addTest(function(canvas, ctx) {
ctx.fillStyle = '#f00';
ctx.fillRect(0, 0, 100, 50)
ctx.fillStyle = '#0f0';
ctx.fillRect(60, 30, 20, 20)
var imgdata = ctx.getImageData(0, 0, 100, 50);
ctx.fillStyle = '#0f0';
ctx.fillRect(0, 0, 100, 50)
ctx.fillStyle = '#f00';
ctx.fillRect(40, 20, 20, 20)
ctx.putImageData(imgdata, -20, -10, 60, 30, 20, 20);
_assertPixelApprox(canvas, 50,25, 0,255,0,255, "50,25", "0,255,0,255", 2);
_assertPixelApprox(canvas, 35,25, 0,255,0,255, "35,25", "0,255,0,255", 2);
_assertPixelApprox(canvas, 65,25, 0,255,0,255, "65,25", "0,255,0,255", 2);
_assertPixelApprox(canvas, 50,15, 0,255,0,255, "50,15", "0,255,0,255", 2);
_assertPixelApprox(canvas, 50,45, 0,255,0,255, "50,45", "0,255,0,255", 2);
});
</script>