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Diffstat (limited to 'testing/web-platform/tests/html/canvas/offscreen/manual/the-offscreen-canvas/offscreencanvas.transfer.to.imagebitmap.html')
-rw-r--r-- | testing/web-platform/tests/html/canvas/offscreen/manual/the-offscreen-canvas/offscreencanvas.transfer.to.imagebitmap.html | 112 |
1 files changed, 112 insertions, 0 deletions
diff --git a/testing/web-platform/tests/html/canvas/offscreen/manual/the-offscreen-canvas/offscreencanvas.transfer.to.imagebitmap.html b/testing/web-platform/tests/html/canvas/offscreen/manual/the-offscreen-canvas/offscreencanvas.transfer.to.imagebitmap.html new file mode 100644 index 0000000000..6e1adf9591 --- /dev/null +++ b/testing/web-platform/tests/html/canvas/offscreen/manual/the-offscreen-canvas/offscreencanvas.transfer.to.imagebitmap.html @@ -0,0 +1,112 @@ +<!DOCTYPE html> +<script src="/resources/testharness.js"></script> +<script src="/resources/testharnessreport.js"></script> +<script src="/html/canvas/resources/canvas-tests.js"></script> +<link rel="help" href="https://html.spec.whatwg.org/#dom-offscreencanvas-transfertoimagebitmap"> + +<script id="myWorker" type="text/worker"> + +self.onmessage = function(e) { +}; + +</script> + +<script> +function makeWorker(script) +{ + var blob = new Blob([script]); + return new Worker(URL.createObjectURL(blob)); +} + +test(function() { + function testSize(contextType) { + var offscreenCanvas = new OffscreenCanvas(100, 50); + var ctx = offscreenCanvas.getContext(contextType); + var image = offscreenCanvas.transferToImageBitmap(); + assert_equals(image.width, 100); + assert_equals(image.height, 50); + } + + testSize('2d'); + testSize('webgl'); +}, "Test that transferToImageBitmap returns an ImageBitmap with correct width and height"); + +test(function() { + function testImageBitmapClr(shouldCallTwice, alphaVal) { + var offscreenCanvas = new OffscreenCanvas(100, 50); + var ctx = offscreenCanvas.getContext('2d', {alpha: alphaVal}); + ctx.fillStyle = "#0f0"; + ctx.fillRect(0, 0, 100, 50); + var image = offscreenCanvas.transferToImageBitmap(); + + if (shouldCallTwice) + image = offscreenCanvas.transferToImageBitmap(); + + var drawCanvas = document.createElement('canvas'); + drawCanvas.width = 100; + drawCanvas.height = 50; + var dCtx = drawCanvas.getContext('2d'); + dCtx.drawImage(image, 0, 0); + + if (shouldCallTwice) { + if (alphaVal) + _assertPixel(drawCanvas, 50,25, 0,0,0,0); + else + _assertPixel(drawCanvas, 50,25, 0,0,0,255); + } else { + _assertPixel(drawCanvas, 50,25, 0,255,0,255); + } + } + + testImageBitmapClr(false, true); + testImageBitmapClr(true, true); + testImageBitmapClr(true, false); +}, "Test that transferToImageBitmap returns an ImageBitmap with correct color"); + +test(function() { + var offscreenCanvas = new OffscreenCanvas(100, 50); + var ctx = offscreenCanvas.getContext('2d'); + ctx.lineWidth = 10; + var image = offscreenCanvas.transferToImageBitmap(); + assert_equals(ctx.lineWidth, 10); +}, "Test that transferToImageBitmap won't change context's property"); + +test(function() { + var offscreenCanvas = new OffscreenCanvas(100, 50); + var ctx = offscreenCanvas.getContext('2d'); + ctx.rect(0, 0, 25, 50); + ctx.clip(); + ctx.translate(20, 20); + + ctx.fillStyle = '#0f0'; + var image1 = offscreenCanvas.transferToImageBitmap(); + // trasnform should be preserved + ctx.fillRect(0, 0, 10, 10); + var image2 = offscreenCanvas.transferToImageBitmap(); + + var drawCanvas = document.createElement('canvas'); + drawCanvas.width = 100; + drawCanvas.height = 50; + var dCtx = drawCanvas.getContext('2d'); + dCtx.drawImage(image2, 0, 0); + // Verify that transform was carried over. + _assertPixel(drawCanvas, 23,25, 0,255,0,255); + // Verify that clip was carried over. + _assertPixel(drawCanvas, 27,25, 0,0,0,0); +}, "Test that transferToImageBitmap preserves transform"); + +async_test(function(t) { + var worker = makeWorker(document.getElementById("myWorker").textContent); + var offscreenCanvas = new OffscreenCanvas(10, 10); + worker.postMessage(offscreenCanvas, [offscreenCanvas]); + assert_throws_dom("InvalidStateError", function() { offscreenCanvas.transferToImageBitmap(); }); + t.done(); +}, "Test that call transferToImageBitmap on a detached OffscreenCanvas throws an exception"); + +test(function() { + var offscreenCanvas = new OffscreenCanvas(10, 10); + assert_throws_dom("InvalidStateError", function() { offscreenCanvas.transferToImageBitmap(); }); +}, "Test that transferToImageBitmap without a context throws an exception"); + +</script> + |