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206 lines
8.0 KiB
HTML
206 lines
8.0 KiB
HTML
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<!DOCTYPE html>
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<html>
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<head>
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<title>Canvas test: toDataURL parameters (Bug 564388)</title>
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<script src="/tests/SimpleTest/SimpleTest.js"></script>
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<link rel="stylesheet" href="/tests/SimpleTest/test.css">
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</head>
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<body>
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<p>
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For image types that do not support an alpha channel, the image must be
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composited onto a solid black background using the source-over operator,
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and the resulting image must be the one used to create the data: URL.
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</p>
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<p> See:
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<a href="http://www.whatwg.org/specs/web-apps/current-work/multipage/the-canvas-element.html#dom-canvas-todataurl">
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http://www.whatwg.org/specs/web-apps/current-work/multipage/the-canvas-element.html#dom-canvas-todataurl
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</a>
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</p>
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<p>Mozilla
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<a href="https://bugzilla.mozilla.org/show_bug.cgi?id=650720">Bug 650720</a>
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</p>
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<p class="output">Output:</p>
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<!--
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Author's note:
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To add more cases to this test:
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- To add a row (another color value)
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* Add a row to the table below, using the canvas id format
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(c<row>-<col>)
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* Update runTests to include the new row in the loop
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- To add a column (another image format)
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* Add a column to the table below, using the canvas id format above
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* Update runTests to call do_canvas, passing your column number,
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the image format, and any options to pass to the toDataUrl function
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Vaguely derived from Philip Taylor's toDataURL.jpeg.alpha test:
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http://philip.html5.org/tests/canvas/suite/tests/toDataURL.jpeg.alpha.html
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-->
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<table>
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<tr>
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<th>Type:</th>
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<th>image/png</th>
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<th>image/jpeg</th>
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<th>image/bmp<br />(24 bpp)</th>
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<th>image/bmp<br />(32 bpp)</th>
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</tr>
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<tr>
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<td id="c1">rgba(128, 255, 128, 0.5)</td>
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<td><canvas id="c1-1" class="output" width="100" height="50">
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<p class="fallback">FAIL (fallback content)</p></canvas></td>
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<td><canvas id="c1-2" class="output" width="100" height="50">
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<p class="fallback">FAIL (fallback content)</p></canvas></td>
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<td><canvas id="c1-3" class="output" width="100" height="50">
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<p class="fallback">FAIL (fallback content)</p></canvas></td>
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<td><canvas id="c1-4" class="output" width="100" height="50">
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<p class="fallback">FAIL (fallback content)</p></canvas></td>
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</tr>
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<tr>
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<td id="c2">rgba(255, 128, 128, 0.75)</td>
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<td><canvas id="c2-1" class="output" width="100" height="50">
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<p class="fallback">FAIL (fallback content)</p></canvas></td>
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<td><canvas id="c2-2" class="output" width="100" height="50">
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<p class="fallback">FAIL (fallback content)</p></canvas></td>
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<td><canvas id="c2-3" class="output" width="100" height="50">
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<p class="fallback">FAIL (fallback content)</p></canvas></td>
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<td><canvas id="c2-4" class="output" width="100" height="50">
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<p class="fallback">FAIL (fallback content)</p></canvas></td>
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</tr>
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<tr>
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<td id="c3">rgba(128, 128, 255, 0.25)</td>
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<td><canvas id="c3-1" class="output" width="100" height="50">
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<p class="fallback">FAIL (fallback content)</p></canvas></td>
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<td><canvas id="c3-2" class="output" width="100" height="50">
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<p class="fallback">FAIL (fallback content)</p></canvas></td>
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<td><canvas id="c3-3" class="output" width="100" height="50">
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<p class="fallback">FAIL (fallback content)</p></canvas></td>
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<td><canvas id="c3-4" class="output" width="100" height="50">
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<p class="fallback">FAIL (fallback content)</p></canvas></td>
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</tr>
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<tr>
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<td id="c4">rgba(255, 255, 255, 1.0)</td>
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<td><canvas id="c4-1" class="output" width="100" height="50">
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<p class="fallback">FAIL (fallback content)</p></canvas></td>
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<td><canvas id="c4-2" class="output" width="100" height="50">
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<p class="fallback">FAIL (fallback content)</p></canvas></td>
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<td><canvas id="c4-3" class="output" width="100" height="50">
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<p class="fallback">FAIL (fallback content)</p></canvas></td>
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<td><canvas id="c4-4" class="output" width="100" height="50">
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<p class="fallback">FAIL (fallback content)</p></canvas></td>
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</tr>
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<tr>
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<td id="c5">rgba(255, 255, 255, 0)</td>
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<td><canvas id="c5-1" class="output" width="100" height="50">
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<p class="fallback">FAIL (fallback content)</p></canvas></td>
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<td><canvas id="c5-2" class="output" width="100" height="50">
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<p class="fallback">FAIL (fallback content)</p></canvas></td>
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<td><canvas id="c5-3" class="output" width="100" height="50">
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<p class="fallback">FAIL (fallback content)</p></canvas></td>
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<td><canvas id="c5-4" class="output" width="100" height="50">
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<p class="fallback">FAIL (fallback content)</p></canvas></td>
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</tr>
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<tr>
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<td id="c6">rgba(0, 0, 0, 1.0)</td>
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<td><canvas id="c6-1" class="output" width="100" height="50">
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<p class="fallback">FAIL (fallback content)</p></canvas></td>
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<td><canvas id="c6-2" class="output" width="100" height="50">
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<p class="fallback">FAIL (fallback content)</p></canvas></td>
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<td><canvas id="c6-3" class="output" width="100" height="50">
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<p class="fallback">FAIL (fallback content)</p></canvas></td>
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<td><canvas id="c6-4" class="output" width="100" height="50">
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<p class="fallback">FAIL (fallback content)</p></canvas></td>
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</tr>
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<tr>
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<td id="c7">rgba(0, 0, 0, 0)</td>
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<td><canvas id="c7-1" class="output" width="100" height="50">
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<p class="fallback">FAIL (fallback content)</p></canvas></td>
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<td><canvas id="c7-2" class="output" width="100" height="50">
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<p class="fallback">FAIL (fallback content)</p></canvas></td>
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<td><canvas id="c7-3" class="output" width="100" height="50">
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<p class="fallback">FAIL (fallback content)</p></canvas></td>
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<td><canvas id="c7-4" class="output" width="100" height="50">
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<p class="fallback">FAIL (fallback content)</p></canvas></td>
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</tr>
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</table>
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<script>
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var finishedTests = [];
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function isPixel(ctx, x,y, r,g,b,a, d)
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{
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var pos = x + "," + y;
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var colour = r + "," + g + "," + b + "," + a;
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var pixel = ctx.getImageData(x, y, 1, 1);
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var pr = pixel.data[0],
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pg = pixel.data[1],
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pb = pixel.data[2],
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pa = pixel.data[3];
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ok(r-d <= pr && pr <= r+d &&
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g-d <= pg && pg <= g+d &&
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b-d <= pb && pb <= b+d &&
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a-d <= pa && pa <= a+d,
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"pixel "+pos+" of "+ctx.canvas.id+" is "+pr+","+pg+","+pb+","+pa+
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"; expected "+colour+" +/- "+d);
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}
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function do_canvas(row, col, type, options)
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{
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finishedTests[row + '_' + col] = false;
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var canvas = document.getElementById('c' + row + '-' + col);
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var ctx = canvas.getContext('2d');
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ctx.fillStyle = document.getElementById('c' + row).textContent;
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ctx.fillRect(0, 0, 100, 50);
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var data = canvas.toDataURL(type, options);
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ctx.fillStyle = '#000';
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ctx.fillRect(0, 0, 100, 50);
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var img = new Image();
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var color = document.getElementById('c' + row).textContent;
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color = color.substr(5, color.length - 6); // strip off the 'argb()'
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var colors = color.replace(' ', '', 'g').split(',');
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var r = colors[0]*colors[3],
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g = colors[1]*colors[3],
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b = colors[2]*colors[3];
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img.onload = function ()
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{
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ctx.drawImage(img, 0, 0);
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isPixel(ctx, 50,25, r,g,b,255, 8);
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finishedTests[row + '_' + col] = true;
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};
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img.src = data;
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}
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function checkFinished()
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{
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for (var t in finishedTests) {
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if (!finishedTests[t]) {
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setTimeout(checkFinished, 500);
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return;
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}
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}
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SimpleTest.finish();
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}
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function runTests()
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{
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for (var row = 1; row <= 7; row++) {
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do_canvas(row, 1, 'image/png');
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do_canvas(row, 2, 'image/jpeg');
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do_canvas(row, 3, 'image/bmp');
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do_canvas(row, 4, 'image/bmp', '-moz-parse-options:bpp=32');
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}
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setTimeout(checkFinished, 500);
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}
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SimpleTest.waitForExplicitFinish();
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addLoadEvent(runTests);
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</script>
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</html>
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