2dcontext/compositing/2d.composite.clip.source-out.html

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<title>Canvas test: 2d.composite.clip.source-out</title>
<meta name="author" content="Philip Taylor">
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<script src="../../../common/canvas-tests.js"></script>
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<h1><a href="index.2d.html">2d</a>.<a href="index.2d.composite.html">composite</a>.<a href="index.2d.composite.clip.html">clip</a>.source-out</h1>
<p class="desc">fill() does not affect pixels outside the clip region.</p>

<div class="refs">Spec references:
<ul>
<li><a href="../annotated-spec/canvas.html#testrefs.2d.composite.source-out">2d.composite.source-out</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="../../../images/green-100x50.png" class="output expected" id="expected" alt="">
<ul id="d"></ul>
<script>
var t = async_test("fill() does not affect pixels outside the clip region.");
_addTest(function(canvas, ctx) {


ctx.fillStyle = '#0f0';
ctx.fillRect(0, 0, 100, 50);
ctx.globalCompositeOperation = 'source-out';
ctx.rect(-20, -20, 10, 10);
ctx.clip();
ctx.fillStyle = '#f00';
ctx.fillRect(0, 0, 50, 50);
_assertPixel(canvas, 25,25, 0,255,0,255, "25,25", "0,255,0,255");
_assertPixel(canvas, 75,25, 0,255,0,255, "75,25", "0,255,0,255");


});
</script>