203 lines
4.6 KiB
HTML
203 lines
4.6 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("Ensure that canvas shadowBlur is not affected by transformations.");
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function print(message, color)
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{
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var paragraph = document.createElement("div");
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paragraph.appendChild(document.createTextNode(message));
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paragraph.style.fontFamily = "monospace";
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if (color)
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paragraph.style.color = color;
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document.getElementById("console").appendChild(paragraph);
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}
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function shouldBeAround(a, b)
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{
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var evalA;
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try {
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evalA = eval(a);
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} catch(e) {
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evalA = e;
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}
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if (Math.abs(evalA - b) < 10)
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print("PASS " + a + " is around " + b , "green")
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else
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print("FAIL " + a + " is not around " + b + " (actual: " + evalA + ")", "red");
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}
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var canvas = document.createElement('canvas');
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document.body.appendChild(canvas);
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canvas.setAttribute('width', '600');
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canvas.setAttribute('height', '600');
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var ctx = canvas.getContext('2d');
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ctx.shadowBlur = 25;
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ctx.shadowOffsetX = 100;
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ctx.shadowOffsetY = 100;
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ctx.fillStyle = 'rgba(0, 0, 255, 1)';
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// top left
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ctx.shadowColor = 'rgba(255, 0, 0, 1.0)';
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ctx.scale(4, 4);
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ctx.rotate(Math.PI/2);
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ctx.translate(25, -50);
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ctx.fillRect(0, 0, 25, 25);
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// bottom left
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ctx.shadowColor = 'rgba(255, 0, 0, 0.5)';
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ctx.setTransform(1, 0, 0, 1, 0, 0);
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ctx.scale(0.5, 0.5);
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ctx.fillRect(200, 600, 200, 200);
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// top right
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ctx.shadowColor = 'rgba(255, 0, 0, 1.0)';
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ctx.scale(2, 2);
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ctx.fillRect(300, 100, 100, 100);
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// bottom right
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ctx.shadowColor = 'rgba(255, 0, 0, 0.5)';
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ctx.fillRect(300, 300, 100, 100);
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var d;
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// top left
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d = ctx.getImageData(250, 250, 1, 1).data;
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shouldBe('d[0]', '255');
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shouldBe('d[1]', '0');
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shouldBe('d[2]', '0');
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shouldBeAround('d[3]', '255');
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d = ctx.getImageData(250, 174, 1, 1).data;
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shouldBe('d[0]', '0');
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shouldBe('d[1]', '0');
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shouldBe('d[2]', '0');
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shouldBe('d[3]', '0');
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d = ctx.getImageData(250, 325, 1, 1).data;
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shouldBe('d[0]', '0');
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shouldBe('d[1]', '0');
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shouldBe('d[2]', '0');
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shouldBe('d[3]', '0');
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d = ctx.getImageData(174, 250, 1, 1).data;
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shouldBe('d[0]', '0');
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shouldBe('d[1]', '0');
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shouldBe('d[2]', '0');
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shouldBe('d[3]', '0');
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d = ctx.getImageData(325, 250, 1, 1).data;
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shouldBe('d[0]', '0');
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shouldBe('d[1]', '0');
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shouldBe('d[2]', '0');
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shouldBe('d[3]', '0');
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// bottom left
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d = ctx.getImageData(250, 450, 1, 1).data;
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shouldBe('d[0]', '255');
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shouldBe('d[1]', '0');
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shouldBe('d[2]', '0');
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shouldBeAround('d[3]', '126');
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d = ctx.getImageData(250, 375, 1, 1).data;
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shouldBe('d[0]', '0');
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shouldBe('d[1]', '0');
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shouldBe('d[2]', '0');
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shouldBe('d[3]', '0');
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d = ctx.getImageData(250, 525, 1, 1).data;
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shouldBe('d[0]', '0');
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shouldBe('d[1]', '0');
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shouldBe('d[2]', '0');
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shouldBe('d[3]', '0');
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d = ctx.getImageData(175, 450, 1, 1).data;
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shouldBe('d[0]', '0');
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shouldBe('d[1]', '0');
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shouldBe('d[2]', '0');
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shouldBe('d[3]', '0');
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d = ctx.getImageData(325, 450, 1, 1).data;
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shouldBe('d[0]', '0');
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shouldBe('d[1]', '0');
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shouldBe('d[2]', '0');
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shouldBe('d[3]', '0');
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d = ctx.getImageData(250, 250, 1, 1).data;
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shouldBe('d[0]', '255');
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shouldBe('d[1]', '0');
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shouldBe('d[2]', '0');
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shouldBeAround('d[3]', '255');
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// top right
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d = ctx.getImageData(450, 250, 1, 1).data;
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shouldBe('d[0]', '255');
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shouldBe('d[1]', '0');
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shouldBe('d[2]', '0');
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shouldBeAround('d[3]', '255');
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d = ctx.getImageData(450, 174, 1, 1).data;
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shouldBe('d[0]', '0');
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shouldBe('d[1]', '0');
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shouldBe('d[2]', '0');
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shouldBe('d[3]', '0');
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d = ctx.getImageData(450, 325, 1, 1).data;
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shouldBe('d[0]', '0');
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shouldBe('d[1]', '0');
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shouldBe('d[2]', '0');
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shouldBe('d[3]', '0');
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d = ctx.getImageData(374, 250, 1, 1).data;
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shouldBe('d[0]', '0');
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shouldBe('d[1]', '0');
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shouldBe('d[2]', '0');
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shouldBe('d[3]', '0');
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d = ctx.getImageData(525, 250, 1, 1).data;
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shouldBe('d[0]', '0');
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shouldBe('d[1]', '0');
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shouldBe('d[2]', '0');
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shouldBe('d[3]', '0');
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// top right
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d = ctx.getImageData(450, 450, 1, 1).data;
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shouldBe('d[0]', '255');
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shouldBe('d[1]', '0');
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shouldBe('d[2]', '0');
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shouldBeAround('d[3]', '126');
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d = ctx.getImageData(450, 375, 1, 1).data;
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shouldBe('d[0]', '0');
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shouldBe('d[1]', '0');
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shouldBe('d[2]', '0');
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shouldBe('d[3]', '0');
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d = ctx.getImageData(450, 525, 1, 1).data;
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shouldBe('d[0]', '0');
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shouldBe('d[1]', '0');
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shouldBe('d[2]', '0');
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shouldBe('d[3]', '0');
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d = ctx.getImageData(375, 450, 1, 1).data;
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shouldBe('d[0]', '0');
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shouldBe('d[1]', '0');
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shouldBe('d[2]', '0');
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shouldBe('d[3]', '0');
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d = ctx.getImageData(525, 450, 1, 1).data;
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shouldBe('d[0]', '0');
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shouldBe('d[1]', '0');
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shouldBe('d[2]', '0');
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shouldBe('d[3]', '0');
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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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