174 lines
4.7 KiB
HTML
174 lines
4.7 KiB
HTML
<!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 image shadow. A square with a cut-out top-right corner should be displayed with solid shadow (top) and blur shadow (bottom).");
|
|
|
|
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 shouldNotBe(a, b)
|
|
{
|
|
var evalA;
|
|
try {
|
|
evalA = eval(a);
|
|
} catch(e) {
|
|
evalA = e;
|
|
}
|
|
|
|
if (evalA != b)
|
|
print("PASS " + a + " should not be " + b + " and it's not.", "green")
|
|
else
|
|
print("FAIL " + a + " should not be " + b + " but it is.", "red");
|
|
}
|
|
|
|
// Create auxiliary canvas to draw to and create an image from.
|
|
// This is done instead of simply loading an image from the file system
|
|
// because that would throw a SECURITY_ERR DOM Exception.
|
|
var aCanvas = document.createElement('canvas');
|
|
aCanvas.setAttribute('width', '200');
|
|
aCanvas.setAttribute('height', '200');
|
|
var aCtx = aCanvas.getContext('2d');
|
|
|
|
// Draw a circle on the same canvas.
|
|
aCtx.beginPath();
|
|
aCtx.fillStyle = 'green';
|
|
aCtx.arc(100, 100, 150, 0, -Math.PI/2, false);
|
|
aCtx.fill();
|
|
|
|
// Create the image object to be drawn on the master canvas.
|
|
var img = new Image();
|
|
img.onload = drawImageToCanvasAndCheckPixels;
|
|
img.src = aCanvas.toDataURL(); // set a data URI of the base64 enconded image as the source
|
|
|
|
// Create master canvas.
|
|
var canvas = document.createElement('canvas');
|
|
document.body.appendChild(canvas);
|
|
canvas.setAttribute('width', '600');
|
|
canvas.setAttribute('height', '600');
|
|
var ctx = canvas.getContext('2d');
|
|
|
|
function drawImageToCanvasAndCheckPixels() {
|
|
ctx.shadowOffsetX = 250;
|
|
ctx.shadowColor = 'rgba(240, 50, 50, 1.0)';
|
|
ctx.drawImage(img, 50, 50);
|
|
|
|
ctx.shadowOffsetX = 250;
|
|
ctx.shadowBlur = 6;
|
|
ctx.shadowColor = 'rgba(50, 50, 200, 0.9)';
|
|
ctx.shadowColor = 'rgba(0, 0, 255, 1.0)';
|
|
ctx.drawImage(img, 50, 300);
|
|
|
|
checkPixels();
|
|
}
|
|
|
|
function checkPixels() {
|
|
var imageData, data;
|
|
|
|
// Verify solid shadow.
|
|
imageData = ctx.getImageData(260, 300, 1, 1);
|
|
d = imageData.data;
|
|
shouldBe('d[0]', '0');
|
|
shouldBe('d[1]', '0');
|
|
shouldBe('d[2]', '0');
|
|
shouldBe('d[3]', '0');
|
|
|
|
imageData = ctx.getImageData(350, 100, 1, 1);
|
|
d = imageData.data;
|
|
shouldBe('d[0]', '240');
|
|
shouldBe('d[1]', '50');
|
|
shouldBe('d[2]', '50');
|
|
shouldBe('d[3]', '255');
|
|
|
|
imageData = ctx.getImageData(400, 200, 1, 1);
|
|
d = imageData.data;
|
|
shouldBe('d[0]', '240');
|
|
shouldBe('d[1]', '50');
|
|
shouldBe('d[2]', '50');
|
|
shouldBe('d[3]', '255');
|
|
|
|
imageData = ctx.getImageData(490, 65, 1, 1);
|
|
d = imageData.data;
|
|
shouldBe('d[0]', '0');
|
|
shouldBe('d[1]', '0');
|
|
shouldBe('d[2]', '0');
|
|
shouldBe('d[3]', '0');
|
|
|
|
imageData = ctx.getImageData(485, 65, 1, 1);
|
|
d = imageData.data;
|
|
shouldBe('d[0]', '0');
|
|
shouldBe('d[1]', '0');
|
|
shouldBe('d[2]', '0');
|
|
shouldBe('d[3]', '0');
|
|
|
|
// Verify blurry shadow.
|
|
imageData = ctx.getImageData(260, 400, 1, 1);
|
|
d = imageData.data;
|
|
shouldBe('d[0]', '0');
|
|
shouldBe('d[1]', '0');
|
|
shouldBe('d[2]', '0');
|
|
shouldBe('d[3]', '0');
|
|
|
|
imageData = ctx.getImageData(350, 300, 1, 1);
|
|
d = imageData.data;
|
|
shouldBe('d[0]', '0');
|
|
shouldBe('d[1]', '0');
|
|
shouldBe('d[2]', '255');
|
|
shouldNotBe('d[3]', '255');
|
|
|
|
imageData = ctx.getImageData(300, 400, 1, 1);
|
|
d = imageData.data;
|
|
shouldBe('d[0]', '0');
|
|
shouldBe('d[1]', '0');
|
|
shouldBe('d[2]', '255');
|
|
shouldNotBe('d[3]', '255');
|
|
|
|
imageData = ctx.getImageData(300, 500, 1, 1);
|
|
d = imageData.data;
|
|
shouldBe('d[0]', '0');
|
|
shouldBe('d[1]', '0');
|
|
shouldBe('d[2]', '255');
|
|
shouldNotBe('d[3]', '255');
|
|
|
|
imageData = ctx.getImageData(400, 500, 1, 1);
|
|
d = imageData.data;
|
|
shouldBe('d[0]', '0');
|
|
shouldBe('d[1]', '0');
|
|
shouldBe('d[2]', '255');
|
|
shouldNotBe('d[3]', '255');
|
|
|
|
imageData = ctx.getImageData(400, 400, 1, 1);
|
|
d = imageData.data;
|
|
shouldBe('d[0]', '0');
|
|
shouldBe('d[1]', '0');
|
|
shouldBe('d[2]', '255');
|
|
|
|
imageData = ctx.getImageData(490, 315, 1, 1);
|
|
d = imageData.data;
|
|
shouldBe('d[0]', '0');
|
|
shouldBe('d[1]', '0');
|
|
shouldBe('d[2]', '0');
|
|
shouldBe('d[3]', '0');
|
|
|
|
imageData = ctx.getImageData(485, 320, 1, 1);
|
|
d = imageData.data;
|
|
shouldBe('d[0]', '0');
|
|
shouldBe('d[1]', '0');
|
|
shouldBe('d[2]', '0');
|
|
shouldBe('d[3]', '0');
|
|
}
|
|
</script>
|
|
<script src="../../resources/js-test-post.js"></script>
|
|
</body>
|
|
</html>
|