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https://github.com/servo/servo.git
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201 lines
6.5 KiB
HTML
201 lines
6.5 KiB
HTML
<!DOCTYPE html>
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<script src="/resources/testharness.js"></script>
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<script src="/resources/testharnessreport.js"></script>
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<script src="/common/canvas-tests.js"></script>
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<link rel="help" href="https://html.spec.whatwg.org/#dom-offscreencanvas-transfertoimagebitmap">
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<script id="myWorker" type="text/worker">
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function testSize(contextType)
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{
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var offscreenCanvas = new OffscreenCanvas(100, 50);
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var ctx = offscreenCanvas.getContext(contextType);
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var image = offscreenCanvas.transferToImageBitmap();
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if (image.width == 100 && image.height == 50)
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return true;
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return false;
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}
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function testImageBitmapClr(shouldCallTwice, alphaVal) {
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var offscreenCanvas = new OffscreenCanvas(100, 50);
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var ctx = offscreenCanvas.getContext('2d', {alpha: alphaVal});
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ctx.fillStyle = "#0f0";
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ctx.fillRect(0, 0, 100, 50);
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var image = offscreenCanvas.transferToImageBitmap();
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if (shouldCallTwice)
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image = offscreenCanvas.transferToImageBitmap();
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return image;
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}
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function isInvalidStateError(funcStr, offscreenCanvas)
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{
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try {
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eval(funcStr);
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} catch (e) {
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if (e instanceof DOMException && e.name == "InvalidStateError")
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return true;
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return false;
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}
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}
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function testImageBitmapSize()
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{
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return testSize('2d') && testSize('webgl');
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}
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function testLineWidthNotAltered()
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{
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var offscreenCanvas = new OffscreenCanvas(100, 50);
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var ctx = offscreenCanvas.getContext('2d');
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ctx.lineWidth = 10;
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var image = offscreenCanvas.transferToImageBitmap();
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return ctx.lineWidth == 10;
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}
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function testTransformPreserved()
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{
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var offscreenCanvas = new OffscreenCanvas(100, 50);
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var ctx = offscreenCanvas.getContext('2d');
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ctx.rect(0, 0, 25, 50);
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ctx.clip();
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ctx.translate(20, 20);
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ctx.fillStyle = '#0f0';
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var image1 = offscreenCanvas.transferToImageBitmap();
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// trasnform should be preserved
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ctx.fillRect(0, 0, 10, 10);
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var image2 = offscreenCanvas.transferToImageBitmap();
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return image2;
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}
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function testException()
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{
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var offscreenCanvas = new OffscreenCanvas(10, 10);
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return isInvalidStateError("offscreenCanvas.transferToImageBitmap()", offscreenCanvas);
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}
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self.onmessage = function(e) {
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switch (e.data) {
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case 'test1':
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self.postMessage(testImageBitmapSize());
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break;
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case 'test2':
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self.postMessage(testImageBitmapClr(false, true));
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break;
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case 'test3':
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self.postMessage(testImageBitmapClr(true, true));
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break;
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case 'test4':
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self.postMessage(testImageBitmapClr(true, false));
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break;
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case 'test5':
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self.postMessage(testLineWidthNotAltered());
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break;
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case 'test6':
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self.postMessage(testTransformPreserved());
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break;
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case 'test7':
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var offscreenCanvas = new OffscreenCanvas(10, 10);
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self.postMessage({offscreenCanvas: offscreenCanvas}, [offscreenCanvas]);
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self.postMessage(isInvalidStateError("offscreenCanvas.transferToImageBitmap()", offscreenCanvas));
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break;
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case 'test8':
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self.postMessage(testException());
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break;
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}
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};
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</script>
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<script>
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function makeWorker(test) {
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var blob = new Blob([document.getElementById("myWorker").textContent]);
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var worker = new Worker(URL.createObjectURL(blob));
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worker.onerror = test.unreached_func("error");
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return worker;
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}
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function drawImageBitmap(image, x, y)
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{
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var drawCanvas = document.createElement('canvas');
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drawCanvas.width = 100;
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drawCanvas.height = 50;
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var dCtx = drawCanvas.getContext('2d');
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dCtx.drawImage(image, 0, 0);
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return dCtx.getImageData(x, y, 1, 1).data;
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}
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async_test(function(t) {
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var worker = makeWorker();
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worker.addEventListener('message', t.step_func_done(function(msg) {
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assert_true(msg.data);
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}));
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worker.postMessage('test1');
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}, "Test that transferToImageBitmap returns an ImageBitmap with correct width and height in a worker");
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async_test(function(t) {
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var worker = makeWorker(t);
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worker.addEventListener('message', t.step_func_done(function(msg) {
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var clr = drawImageBitmap(msg.data, 50, 25);
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assert_array_equals(clr, [0, 255, 0, 255]);
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}));
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worker.postMessage('test2');
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}, "Test that transferToImageBitmap returns an ImageBitmap with correct color in a worker");
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async_test(function(t) {
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var worker = makeWorker(t);
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worker.addEventListener('message', t.step_func_done(function(msg) {
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var clr = drawImageBitmap(msg.data, 50, 25);
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assert_array_equals(clr, [0, 0, 0, 0]);
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}));
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worker.postMessage('test3');
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}, "Test that call transferToImageBitmap twice returns an ImageBitmap with correct color in a worker");
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async_test(function(t) {
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var worker = makeWorker(t);
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worker.addEventListener('message', t.step_func_done(function(msg) {
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var clr = drawImageBitmap(msg.data, 50, 25);
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assert_array_equals(clr, [0, 0, 0, 255]);
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}));
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worker.postMessage('test4');
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}, "Test that call transferToImageBitmap twice on a alpha-disabled context returns an ImageBitmap with correct color in a worker");
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async_test(function(t) {
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var worker = makeWorker(t);
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worker.addEventListener('message', t.step_func_done(function(msg) {
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assert_true(msg.data);
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}));
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worker.postMessage('test5');
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}, "Test that transferToImageBitmap won't change context's property in a worker");
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async_test(function(t) {
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var worker = makeWorker(t);
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worker.addEventListener('message', t.step_func_done(function(msg) {
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var clr1 = drawImageBitmap(msg.data, 23, 25);
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assert_array_equals(clr1, [0, 255, 0, 255]);
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var clr2 = drawImageBitmap(msg.data, 27, 25);
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assert_array_equals(clr2, [0, 0, 0, 0]);
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}));
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worker.postMessage('test6');
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}, "Test that call transferToImageBitmap preserves transform in a worker");
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async_test(function(t) {
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var worker = makeWorker(t);
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worker.addEventListener('message', t.step_func_done(function(msg) {
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if (msg.data == true || msg.data == false)
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assert_true(msg.data);
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}));
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worker.postMessage('test7');
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}, "Test that call transferToImageBitmap on a detached OffscreenCanvas throws an exception in a worker");
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async_test(function(t) {
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var worker = makeWorker(t);
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worker.addEventListener('message', t.step_func_done(function(msg) {
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assert_true(msg.data);
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}));
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worker.postMessage('test8');
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}, "Test that call transferToImageBitmap without a context throws an exception in a worker");
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</script>
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