| <!DOCTYPE html> |
| <title>Canvas test: 2d.drawImage.negativeSourceHeightAndWidth</title> |
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| <h1><a href="index.2d.html">2d</a>.<a href="index.2d.drawImage.html">drawImage</a>.negativeSourceHeightAndWidth</h1> |
| <p class="desc">Negative source width/height represents the correct rectangle</p> |
| <div class="refs">References: |
| <ul> |
| <li><a href="spec.html#testrefs.2d.drawImage.direction">2d.drawImage.direction</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="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.drawImage(document.getElementById('green.png'), 100, 50, -100, -50, 0, 0, 100, 50); |
| |
| _assertPixelApprox(canvas, 1,1, 0,255,0,255, "1,1", "0,255,0,255", 2); |
| _assertPixelApprox(canvas, 1,48, 0,255,0,255, "1,48", "0,255,0,255", 2); |
| _assertPixelApprox(canvas, 98,1, 0,255,0,255, "98,1", "0,255,0,255", 2); |
| _assertPixelApprox(canvas, 98,48, 0,255,0,255, "98,48", "0,255,0,255", 2); |
| _assertPixelApprox(canvas, 48,1, 0,255,0,255, "48,1", "0,255,0,255", 2); |
| _assertPixelApprox(canvas, 48,48, 0,255,0,255, "48,48", "0,255,0,255", 2); |
| _assertPixelApprox(canvas, 51,1, 0,255,0,255, "51,1", "0,255,0,255", 2); |
| _assertPixelApprox(canvas, 51,48, 0,255,0,255, "51,48", "0,255,0,255", 2); |
| _assertPixelApprox(canvas, 25,25, 0,255,0,255, "25,25", "0,255,0,255", 2); |
| _assertPixelApprox(canvas, 75,25, 0,255,0,255, "75,25", "0,255,0,255", 2); |
| |
| |
| }); |
| </script> |
| <img src="../images/green.png" id="green.png" class="resource"> |
| |
