| <!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> |
| |
