101 lines
2.6 KiB
HTML
101 lines
2.6 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("This tests behaviour of path modification APIs on an empty path.");
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var canvas = document.createElement('canvas');
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canvas.width=300;
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canvas.height=300;
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var ctx = canvas.getContext('2d');
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function getColor(x,y) {
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var imageData = ctx.getImageData(x, y, 1, 1);
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var data = imageData.data;
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return [data[0], data[1], data[2], data[3]];
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}
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// Test no drawing cases
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ctx.fillStyle = 'green';
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ctx.strokeStyle = 'red';
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ctx.lineWidth = 50;
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debug("Test lineTo")
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ctx.beginPath();
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ctx.fillRect(0, 0, 100, 100);
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ctx.lineTo(50, 50);
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ctx.stroke();
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shouldBe("getColor(40,40)", "[0,128,0,255]");
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ctx.clearRect(0, 0, 300, 300);
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// Test when create rectangle path using a rectangle with width = height = 0.
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debug("Test canvas.rect() with width = height = 0.");
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ctx.strokeStyle = 'red';
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ctx.lineWidth = 10;
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ctx.beginPath();
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ctx.rect(0, 0, 0, 0);
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ctx.stroke();
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shouldBe("getColor(1,1)", "[0,0,0,0]");
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ctx.clearRect(0, 0, 300, 300);
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// Test path modifications that result in drawing
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ctx.fillStyle = 'red';
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ctx.strokeStyle = 'green';
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debug("Test lineTo sequence")
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ctx.beginPath();
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ctx.fillRect(0, 0, 100, 100);
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ctx.lineTo(0, 50);
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ctx.lineTo(100, 50);
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ctx.stroke();
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shouldBe("getColor(0,0)", "[255,0,0,255]");
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shouldBe("getColor(50,50)", "[0,128,0,255]");
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ctx.clearRect(0, 0, 300, 300);
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debug("Test quadraticCurveTo")
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ctx.beginPath();
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ctx.fillRect(0, 0, 100, 100);
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ctx.quadraticCurveTo(0, 50, 100, 50);
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ctx.stroke();
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shouldBe("getColor(10,10)", "[255,0,0,255]");
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shouldBe("getColor(50,50)", "[0,128,0,255]");
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ctx.clearRect(0, 0, 300, 300);
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debug("Test quadraticCurveTo endpoint")
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ctx.beginPath();
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ctx.fillRect(0, 0, 100, 100);
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ctx.quadraticCurveTo(0, 50, 100, 50);
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ctx.lineTo(50, 100);
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ctx.stroke();
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shouldBe("getColor(10,10)", "[255,0,0,255]");
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shouldBe("getColor(99,51)", "[0,128,0,255]");
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shouldBe("getColor(50,50)", "[0,128,0,255]");
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ctx.clearRect(0, 0, 300, 300);
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debug("Test bezierCurveTo")
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ctx.beginPath();
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ctx.fillRect(0, 0, 100, 100);
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ctx.bezierCurveTo(0, 50, 50, 50, 100, 50);
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ctx.stroke();
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shouldBe("getColor(10,10)", "[255,0,0,255]");
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shouldBe("getColor(50,50)", "[0,128,0,255]");
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ctx.clearRect(0, 0, 300, 300);
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debug("Test bezierCurveTo endpoint")
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ctx.beginPath();
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ctx.fillRect(0, 0, 100, 100);
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ctx.bezierCurveTo(0, 50, 50, 50, 100, 50);
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ctx.stroke();
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ctx.lineTo(50, 100);
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ctx.stroke();
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shouldBe("getColor(10,10)", "[255,0,0,255]");
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shouldBe("getColor(99,51)", "[0,128,0,255]");
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shouldBe("getColor(50,50)", "[0,128,0,255]");
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ctx.clearRect(0, 0, 300, 300);
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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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