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Diffstat (limited to 'testing/web-platform/tests/html/canvas/element/manual/imagebitmap/canvas-createImageBitmap-resize.html')
-rw-r--r-- | testing/web-platform/tests/html/canvas/element/manual/imagebitmap/canvas-createImageBitmap-resize.html | 170 |
1 files changed, 170 insertions, 0 deletions
diff --git a/testing/web-platform/tests/html/canvas/element/manual/imagebitmap/canvas-createImageBitmap-resize.html b/testing/web-platform/tests/html/canvas/element/manual/imagebitmap/canvas-createImageBitmap-resize.html new file mode 100644 index 0000000000..782c7e130c --- /dev/null +++ b/testing/web-platform/tests/html/canvas/element/manual/imagebitmap/canvas-createImageBitmap-resize.html @@ -0,0 +1,170 @@ +<!DOCTYPE HTML> +<script src="/resources/testharness.js"></script> +<script src="/resources/testharnessreport.js"></script> +<script> +function checkNoCrop(imageBitmap) +{ + var canvas = document.createElement("canvas"); + canvas.width = 50; + canvas.height = 50; + var ctx = canvas.getContext("2d"); + ctx.clearRect(0, 0, canvas.width, canvas.height); + ctx.drawImage(imageBitmap, 0, 0); + var d = ctx.getImageData(0, 0, 1, 1).data; + assert_array_equals(d, [255, 0, 0, 255], "This pixel should be red."); + d = ctx.getImageData(39, 0, 1, 1).data; + assert_array_equals(d, [0, 255, 0, 255], "This pixel should be green."); + d = ctx.getImageData(0, 39, 1, 1).data; + assert_array_equals(d, [0, 0, 255, 255], "This pixel should be blue."); + d = ctx.getImageData(39, 39, 1, 1).data; + assert_array_equals(d, [0, 0, 0, 255], "This pixel should be black."); + d = ctx.getImageData(41, 41, 1, 1).data; + assert_array_equals(d, [0, 0, 0, 0], "This pixel should be transparent black."); +} + +function checkCrop(imageBitmap) +{ + var canvas = document.createElement("canvas"); + canvas.width = 50; + canvas.height = 50; + var ctx = canvas.getContext("2d"); + ctx.clearRect(0, 0, canvas.width, canvas.height); + ctx.drawImage(imageBitmap, 0, 0); + var d = ctx.getImageData(0, 0, 1, 1).data; + assert_array_equals(d, [255, 0, 0, 255], "This pixel should be red."); + d = ctx.getImageData(19, 0, 1, 1).data; + assert_array_equals(d, [0, 255, 0, 255], "This pixel should be green."); + d = ctx.getImageData(0, 19, 1, 1).data; + assert_array_equals(d, [0, 0, 255, 255], "This pixel should be blue."); + d = ctx.getImageData(19, 19, 1, 1).data; + assert_array_equals(d, [0, 0, 0, 255], "This pixel should be black."); + d = ctx.getImageData(21, 21, 1, 1).data; + assert_array_equals(d, [0, 0, 0, 0], "This pixel should be transparent black."); +} + +function compareBitmaps(bitmap1, bitmap2) +{ + var canvas1 = document.createElement("canvas"); + var canvas2 = document.createElement("canvas"); + canvas1.width = 50; + canvas1.height = 50; + canvas2.width = 50; + canvas2.height = 50; + var ctx1 = canvas1.getContext("2d"); + var ctx2 = canvas2.getContext("2d"); + ctx1.clearRect(0, 0, canvas1.width, canvas1.height); + ctx2.clearRect(0, 0, canvas2.width, canvas2.height); + ctx1.drawImage(bitmap1, 0, 0); + ctx2.drawImage(bitmap2, 0, 0); + var data1 = ctx1.getImageData(0, 0, 50, 50).data; + var data2 = ctx2.getImageData(0, 0, 50, 50).data; + var dataMatched = true; + for (var i = 0; i < data1.length; i++) { + if (data1[i] != data2[i]) { + dataMatched = false; + break; + } + } + assert_false(dataMatched); +} + +function testImageBitmap(source) +{ + return Promise.all([ + createImageBitmap(source, {resizeWidth: 40, resizeHeight: 40, resizeQuality: "high"}), + createImageBitmap(source, {resizeWidth: 40, resizeHeight: 40, resizeQuality: "medium"}), + createImageBitmap(source, {resizeWidth: 40, resizeHeight: 40, resizeQuality: "low"}), + createImageBitmap(source, {resizeWidth: 40, resizeHeight: 40, resizeQuality: "pixelated"}), + createImageBitmap(source, 5, 5, 10, 10, {resizeWidth: 20, resizeHeight: 20, resizeQuality: "high"}), + createImageBitmap(source, 5, 5, 10, 10, {resizeWidth: 20, resizeHeight: 20, resizeQuality: "medium"}), + createImageBitmap(source, 5, 5, 10, 10, {resizeWidth: 20, resizeHeight: 20, resizeQuality: "low"}), + createImageBitmap(source, 5, 5, 10, 10, {resizeWidth: 20, resizeHeight: 20, resizeQuality: "pixelated"}), + ]).then(([noCropHigh, noCropMedium, noCropLow, noCropPixelated, cropHigh, cropMedium, cropLow, cropPixelated]) => { + checkNoCrop(noCropHigh); + checkNoCrop(noCropMedium); + checkNoCrop(noCropLow); + checkNoCrop(noCropPixelated); + checkCrop(cropHigh); + checkCrop(cropMedium); + checkCrop(cropLow); + checkCrop(cropPixelated); + // Brute-force comparison among all bitmaps is too expensive + compareBitmaps(noCropHigh, noCropMedium); + compareBitmaps(noCropLow, noCropPixelated); + compareBitmaps(cropHigh, cropMedium); + compareBitmaps(cropLow, cropPixelated); + }); +} + +function initializeTestCanvas() +{ + var testCanvas = document.createElement("canvas"); + testCanvas.width = 20; + testCanvas.height = 20; + var testCtx = testCanvas.getContext("2d"); + testCtx.fillStyle = "rgb(255, 0, 0)"; + testCtx.fillRect(0, 0, 10, 10); + testCtx.fillStyle = "rgb(0, 255, 0)"; + testCtx.fillRect(10, 0, 10, 10); + testCtx.fillStyle = "rgb(0, 0, 255)"; + testCtx.fillRect(0, 10, 10, 10); + testCtx.fillStyle = "rgb(0, 0, 0)"; + testCtx.fillRect(10, 10, 10, 10); + return testCanvas; +} + +// Blob +promise_test(function() { + return new Promise((resolve, reject) => { + var xhr = new XMLHttpRequest(); + xhr.open("GET", '/images/pattern.png'); + xhr.responseType = 'blob'; + xhr.send(); + xhr.onload = function() { + resolve(xhr.response); + }; + }).then(testImageBitmap); +}, 'createImageBitmap from a Blob with resize option.'); + +// HTMLCanvasElement +promise_test(function() { + var testCanvas = initializeTestCanvas(); + return testImageBitmap(testCanvas); +}, 'createImageBitmap from a HTMLCanvasElement with resize option.'); + +// HTMLImageElement +promise_test(function() { + return new Promise((resolve, reject) => { + var image = new Image(); + image.onload = function() { + resolve(image); + } + image.src = '/images/pattern.png' + }).then(testImageBitmap); +}, 'createImageBitmap from a HTMLImageElement with resize option.'); + +// HTMLImageElement of svg with no specified size +promise_test(function() { + return new Promise((resolve, reject) => { + var image = new Image(); + image.onload = function() { + resolve(image); + } + image.src = '/images/pattern-nosize.svg' + }).then(testImageBitmap); +}, 'createImageBitmap from a HTMLImageElement of svg with no specified size with resize option.'); + +// ImageBitmap +promise_test(function() { + var testCanvas = initializeTestCanvas(); + return createImageBitmap(testCanvas).then(testImageBitmap); +}, 'createImageBitmap from an ImageBitmap with resize option.'); + +// ImageData +promise_test(function() { + var canvas = initializeTestCanvas(); + var ctx = canvas.getContext("2d"); + var data = ctx.getImageData(0, 0, 20, 20); + return testImageBitmap(data); +}, 'createImageBitmap from an ImageData with resize option.'); +</script> |