blob: 55cf517acdae2cb807e9b9969f040a9a19dc2eef [file] [log] [blame]
<!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML//EN">
<html>
<head>
<script src="../../resources/js-test-pre.js"></script>
</head>
<body>
<script>
description("Ensure correct behavior of canvas with fillRect+shadow after scaling. A blue and red checkered pattern should be displayed.");
function print(message, color)
{
var paragraph = document.createElement("div");
paragraph.appendChild(document.createTextNode(message));
paragraph.style.fontFamily = "monospace";
if (color)
paragraph.style.color = color;
document.getElementById("console").appendChild(paragraph);
}
function shouldBeAround(a, b)
{
var evalA;
try {
evalA = eval(a);
} catch(e) {
evalA = e;
}
if (Math.abs(evalA - b) < 20)
print("PASS " + a + " is around " + b , "green")
else
print("FAIL " + a + " is not around " + b + " (actual: " + evalA + ")", "red");
}
var canvas = document.createElement('canvas');
document.body.appendChild(canvas);
canvas.setAttribute('width', '1000');
canvas.setAttribute('height', '1000');
var ctx = canvas.getContext('2d');
ctx.scale(2, 2);
ctx.shadowOffsetX = 100;
ctx.shadowOffsetY = 100;
ctx.fillStyle = 'rgba(0, 0, 255, 1)';
ctx.shadowColor = 'rgba(255, 0, 0, 1.0)';
ctx.fillRect(50, 50, 50, 50);
ctx.shadowColor = 'rgba(255, 0, 0, 0.3)';
ctx.fillRect(50, 150, 50, 50);
ctx.shadowColor = 'rgba(255, 0, 0, 1.0)';
ctx.shadowBlur = 10;
ctx.fillRect(150, 50, 50, 50);
ctx.shadowColor = 'rgba(255, 0, 0, 0.3)';
ctx.fillRect(150, 150, 50, 50);
var d; // imageData.data
// Verify solid shadow.
d = ctx.getImageData(201, 205, 1, 1).data;
shouldBe('d[0]', '255');
shouldBe('d[1]', '0');
shouldBe('d[2]', '0');
shouldBe('d[3]', '255');
d = ctx.getImageData(298, 298, 1, 1).data;
shouldBe('d[0]', '255');
shouldBe('d[1]', '0');
shouldBe('d[2]', '0');
shouldBe('d[3]', '255');
d = ctx.getImageData(201, 298, 1, 1).data;
shouldBe('d[0]', '255');
shouldBe('d[1]', '0');
shouldBe('d[2]', '0');
shouldBe('d[3]', '255');
// Verify solid alpha shadow.
d = ctx.getImageData(201, 405, 1, 1).data;
shouldBe('d[0]', '255');
shouldBe('d[1]', '0');
shouldBe('d[2]', '0');
shouldBeAround('d[3]', '76');
d = ctx.getImageData(298, 405, 1, 1).data;
shouldBe('d[0]', '255');
shouldBe('d[1]', '0');
shouldBe('d[2]', '0');
shouldBeAround('d[3]', '76');
d = ctx.getImageData(205, 498, 1, 1).data;
shouldBe('d[0]', '255');
shouldBe('d[1]', '0');
shouldBe('d[2]', '0');
shouldBeAround('d[3]', '76');
// Verify blurry shadow.
d = ctx.getImageData(398, 205, 1, 1).data;
shouldBe('d[0]', '255');
shouldBe('d[1]', '0');
shouldBe('d[2]', '0');
shouldBeAround('d[3]', '83');
d = ctx.getImageData(501, 205, 1, 1).data;
shouldBe('d[0]', '255');
shouldBe('d[1]', '0');
shouldBe('d[2]', '0');
shouldBeAround('d[3]', '83');
d = ctx.getImageData(500, 300, 1, 1).data;
shouldBe('d[0]', '255');
shouldBe('d[1]', '0');
shouldBe('d[2]', '0');
shouldBeAround('d[3]', '53');
// Verify blurry alpha shadow.
d = ctx.getImageData(398, 405, 1, 1).data;
shouldBe('d[0]', '255');
shouldBe('d[1]', '0');
shouldBe('d[2]', '0');
shouldBeAround('d[3]', '24');
d = ctx.getImageData(405, 501, 1, 1).data;
shouldBe('d[0]', '255');
shouldBe('d[1]', '0');
shouldBe('d[2]', '0');
shouldBeAround('d[3]', '24');
d = ctx.getImageData(405, 501, 1, 1).data;
shouldBe('d[0]', '255');
shouldBe('d[1]', '0');
shouldBe('d[2]', '0');
shouldBeAround('d[3]', '24');
</script>
<script src="../../resources/js-test-post.js"></script>
</body>
</html>