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| author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 09:22:09 +0000 |
|---|---|---|
| committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 09:22:09 +0000 |
| commit | 43a97878ce14b72f0981164f87f2e35e14151312 (patch) | |
| tree | 620249daf56c0258faa40cbdcf9cfba06de2a846 /testing/web-platform/tests/imagebitmap-renderingcontext/transferFromImageBitmap-null-offscreen.html | |
| parent | Initial commit. (diff) | |
| download | firefox-upstream.tar.xz firefox-upstream.zip | |
Adding upstream version 110.0.1.upstream/110.0.1upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'testing/web-platform/tests/imagebitmap-renderingcontext/transferFromImageBitmap-null-offscreen.html')
| -rw-r--r-- | testing/web-platform/tests/imagebitmap-renderingcontext/transferFromImageBitmap-null-offscreen.html | 63 |
1 files changed, 63 insertions, 0 deletions
diff --git a/testing/web-platform/tests/imagebitmap-renderingcontext/transferFromImageBitmap-null-offscreen.html b/testing/web-platform/tests/imagebitmap-renderingcontext/transferFromImageBitmap-null-offscreen.html new file mode 100644 index 0000000000..e05a623a2f --- /dev/null +++ b/testing/web-platform/tests/imagebitmap-renderingcontext/transferFromImageBitmap-null-offscreen.html @@ -0,0 +1,63 @@ +<!DOCTYPE html> +<meta charset="utf-8"> +<title>Canvas's ImageBitmapRenderingContext test</title> +<script src="/resources/testharness.js"></script> +<script src="/resources/testharnessreport.js"></script> +<link rel="help" href="https://html.spec.whatwg.org/multipage/scripting.html#the-imagebitmap-rendering-context"> +<script> +var width = 10; +var height = 10; + +function testCanvas(bitmapCanvas, r, g, b, a) +{ + var myCanvas = document.createElement('canvas'); + myCanvas.width = width; + myCanvas.height = height; + var myCtx = myCanvas.getContext('2d'); + myCtx.drawImage(bitmapCanvas, 0, 0); + var color = myCtx.getImageData(5, 5, 1, 1).data; + assert_array_equals(color, [r, g, b, a]); +} + +promise_test(function() { + function testTransferFromImageBitmapNullability(greenImage, redImage) { + var bitmapCanvas = new OffscreenCanvas(width,height); + var bitmapCtx = bitmapCanvas.getContext('bitmaprenderer'); + bitmapCtx.transferFromImageBitmap(greenImage); + + // Make sure the bitmap renderer canvas is filled correctly. + testCanvas(bitmapCanvas, 0, 255, 0, 255); + + // Test if passing null resets the bitmap renderer canvas. + // Drawing the resetted canvas cannot change the destination canvas. + bitmapCtx.transferFromImageBitmap(null); + testCanvas(bitmapCanvas, 0, 0, 0, 0); + + // Test if we can redraw the bitmap canvas correctly after reset. + bitmapCtx.transferFromImageBitmap(redImage); + testCanvas(bitmapCanvas, 255, 0, 0, 255); + } + + var greenCanvas = document.createElement('canvas'); + greenCanvas.width = width; + greenCanvas.height = height; + var greenCtx = greenCanvas.getContext('2d'); + greenCtx.fillStyle = '#0f0'; + greenCtx.fillRect(0, 0, width, height); + + var redCanvas = document.createElement('canvas'); + redCanvas.width = width; + redCanvas.height = height; + var redCtx = redCanvas.getContext('2d'); + redCtx.fillStyle = '#f00'; + redCtx.fillRect(0, 0, width, height); + + return Promise.all([ + createImageBitmap(greenCanvas), + createImageBitmap(redCanvas), + ]).then(([greenImage, redImage]) => { + testTransferFromImageBitmapNullability(greenImage, redImage); + }); +},'Test that transferFromImageBitmap(null) discards the previously transferred image'); + +</script> |