56 lines
1.7 KiB
HTML
56 lines
1.7 KiB
HTML
<!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML//EN">
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<html>
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<head>
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<script src="../../resources/js-test-pre.js"></script>
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</head>
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<body>
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<script>
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description("Test for chromium's canvas bug where fillText resets the current context https://bugs.webkit.org/show_bug.cgi?id=26436 . You must see green box with message 'This text should be seen', and black box below the green box.")
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function pixelValueAt(context, x, y) {
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var imageData = context.getImageData(x, y, 1, 1);
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return imageData.data;
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}
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function pixelToString(p) {
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return "[" + p[0] + ", " + p[1] + ", " + p[2] + ", " + p[3] + "]"
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}
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function pixelShouldBe(context, x, y, expectedPixelString) {
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var pixel = pixelValueAt(context, x, y);
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var expectedPixel = eval(expectedPixelString);
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var pixelString = "pixel " + x + ", " + y;
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if (areArraysEqual(pixel, expectedPixel)) {
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testPassed(pixelString + " is " + pixelToString(pixel));
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} else {
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testFailed(pixelString + " should be " + pixelToString(expectedPixel) + " was " + pixelToString(pixel));
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}
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}
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var canvas = document.createElement("canvas");
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canvas.height = 100;
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canvas.width = 500;
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canvas.style.height = "100";
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canvas.style.width = "500";
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document.body.appendChild(canvas);
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var ctx = canvas.getContext('2d');
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ctx.fillStyle = 'rgb(0,255,0)';
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ctx.fillRect(0, 0, 500, 100);
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ctx.fillStyle = 'rgb(0,0,0)';
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ctx.fillText("This text should be seen", 20, 20);
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ctx.translate(0, 50);
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ctx.font = "10pt Arial";
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ctx.fillText("This text should NOT be seen", 20, 20);
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// If fillText resets the current context, this rectangle won't hide the text.
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ctx.fillStyle = 'rgb(0,0,0)';
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ctx.fillRect(0, 0, 500, 50);
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pixelShouldBe(ctx, 0, 0, "[0,255,0,255]");
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</script>
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<script src="../../resources/js-test-post.js"></script>
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</body>
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</html>
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