blob: 9146a3704bae56c4a298c271436b734ff299aa6a [file] [log] [blame]
<!DOCTYPE html>
<html>
<title>createImageBitmap + drawImage test</title>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="/common/canvas-tests.js"></script>
<script src="/common/media.js"></script>
<script src="/common/namespaces.js"></script>
<script src="common.sub.js"></script>
<link rel="stylesheet" href="/common/canvas-tests.css">
<body>
<script>
function testCanvasDisplayingPattern(canvas, width, height)
{
var tolerance = 10; // for creating ImageBitmap from a video, the tolerance needs to be high
const check = (x, y, r, g, b, a) =>
_assertPixelApprox(canvas, x,y, r,g,b,a, `${x},${y}`, `${r},${g},${b},${a}`, tolerance);
check(1 * width / 4, 1 * height / 4, 255,0,0,255);
check(3 * width / 4, 1 * height / 4, 0,255,0,255);
check(1 * width / 4, 3 * height / 4, 0,0,255,255);
check(3 * width / 4, 3 * height / 4, 0,0,0,255);
}
function testDrawImageBitmap(source, args = [], { resizeWidth = 20, resizeHeight = 20 } = {})
{
var canvas = document.createElement("canvas");
canvas.width = resizeWidth;
canvas.height = resizeHeight;
var ctx = canvas.getContext("2d");
return createImageBitmap(source, ...args).then(imageBitmap => {
assert_equals(imageBitmap.width, resizeWidth);
assert_equals(imageBitmap.height, resizeHeight);
ctx.drawImage(imageBitmap, 0, 0);
testCanvasDisplayingPattern(canvas, resizeWidth, resizeHeight);
});
}
for (let { name, factory } of imageSourceTypes) {
promise_test(function() {
return factory().then(function(img) {
return testDrawImageBitmap(img);
});
}, `createImageBitmap from ${name}, and drawImage on the created ImageBitmap`);
promise_test(function() {
return factory().then(function(img) {
const options = { resizeWidth: 10, resizeHeight: 10 };
return testDrawImageBitmap(img, [options], options);
});
}, `createImageBitmap from ${name} scaled down, and drawImage on the created ImageBitmap`);
promise_test(function() {
return factory().then(function(img) {
const options = { resizeWidth: 40, resizeHeight: 40 };
return testDrawImageBitmap(img, [options], options);
});
}, `createImageBitmap from ${name} scaled up, and drawImage on the created ImageBitmap`);
promise_test(function() {
return factory().then(function(img) {
const options = { resizeWidth: 10, resizeHeight: 40 };
return testDrawImageBitmap(img, [options], options);
});
}, `createImageBitmap from ${name} resized, and drawImage on the created ImageBitmap`);
promise_test(function() {
return factory().then(function(img) {
return testDrawImageBitmap(img, [20, 20, -20, -20]);
});
}, `createImageBitmap from ${name} with negative sw/sh, and drawImage on the created ImageBitmap`);
}
</script>
</body>
</html>