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Diffstat (limited to 'dom/canvas/test/imagebitmap_structuredclone_utils.js')
| -rw-r--r-- | dom/canvas/test/imagebitmap_structuredclone_utils.js | 200 |
1 files changed, 200 insertions, 0 deletions
diff --git a/dom/canvas/test/imagebitmap_structuredclone_utils.js b/dom/canvas/test/imagebitmap_structuredclone_utils.js new file mode 100644 index 0000000000..c337fd53ab --- /dev/null +++ b/dom/canvas/test/imagebitmap_structuredclone_utils.js @@ -0,0 +1,200 @@ +var gImage1; +var gImage2; +var gImageBitmap1; +var gImageBitmap2; + +// Bug 1239752. +var gImageData; +var gImageBitmap3; + +function comparePixelColor( + testImgageData, + groundTruthImageData, + x, + y, + tolerance, + info +) { + ok( + testImgageData.width == groundTruthImageData.width && + testImgageData.height == groundTruthImageData.height, + "testImgageData and groundTruthImageData should have the same dimension." + ); + + var index = (groundTruthImageData.width * y + x) * 4; + var r = groundTruthImageData.data[index + 0]; + var g = groundTruthImageData.data[index + 1]; + var b = groundTruthImageData.data[index + 2]; + var a = groundTruthImageData.data[index + 3]; + var newR = testImgageData.data[index + 0]; + var newG = testImgageData.data[index + 1]; + var newB = testImgageData.data[index + 2]; + var newA = testImgageData.data[index + 3]; + var isTheSame = + Math.abs(r - newR) <= tolerance && + Math.abs(g - newG) <= tolerance && + Math.abs(b - newB) <= tolerance && + Math.abs(a - newA) <= tolerance; + ok( + isTheSame, + "[" + + info + + "] " + + "newImageData(" + + newR + + "," + + newG + + "," + + newB + + "," + + newA + + ") should equal to imageData(" + + r + + "," + + g + + "," + + b + + "," + + a + + ")." + ); +} + +function compareImageBitmapWithImageElement(imageBitmap, imageElement) { + var canvas1 = document.createElement("canvas"); + var canvas2 = document.createElement("canvas"); + + canvas1.width = imageElement.naturalWidth; + canvas1.height = imageElement.naturalHeight; + canvas2.width = imageElement.naturalWidth; + canvas2.height = imageElement.naturalHeight; + + var ctx1 = canvas1.getContext("2d"); + var ctx2 = canvas2.getContext("2d"); + + ctx1.drawImage(imageElement, 0, 0); + ctx2.drawImage(imageBitmap, 0, 0); + + document.body.appendChild(canvas1); + document.body.appendChild(canvas2); + + var imageData1 = ctx1.getImageData(0, 0, canvas1.width, canvas1.height); + var imageData2 = ctx2.getImageData(0, 0, canvas2.width, canvas2.height); + + // Create an array of pixels that is going to be tested. + var pixels = []; + var xGap = imageElement.naturalWidth / 4; + var yGap = imageElement.naturalHeight / 4; + for (var y = 0; y < imageElement.naturalHeight; y += yGap) { + for (var x = 0; x < imageElement.naturalWidth; x += xGap) { + pixels.push({ x, y }); + } + } + + // Also, put the button-right pixel into pixels. + pixels.push({ + x: imageElement.naturalWidth - 1, + y: imageElement.naturalHeight - 1, + }); + + // Do the test. + for (var pixel of pixels) { + comparePixelColor(imageData2, imageData1, pixel.x, pixel.y, 0); + } +} + +function compareImageBitmapWithImageData(imageBitmap, imageData, info) { + var canvas1 = document.createElement("canvas"); + + canvas1.width = imageBitmap.width; + canvas1.height = imageBitmap.height; + + var ctx1 = canvas1.getContext("2d"); + + ctx1.drawImage(imageBitmap, 0, 0); + + document.body.appendChild(canvas1); + + var imageData1 = ctx1.getImageData(0, 0, canvas1.width, canvas1.height); + + // Create an array of pixels that is going to be tested. + var pixels = []; + var xGap = imageBitmap.width / 4; + var yGap = imageBitmap.height / 4; + for (var y = 0; y < imageBitmap.height; y += yGap) { + for (var x = 0; x < imageBitmap.width; x += xGap) { + pixels.push({ x, y }); + } + } + + // Also, put the button-right pixel into pixels. + pixels.push({ x: imageBitmap.width - 1, y: imageBitmap.height - 1 }); + + // Do the test. + for (var pixel of pixels) { + comparePixelColor(imageData1, imageData, pixel.x, pixel.y, 5, info); + } +} + +function prepareImageBitmaps() { + gImage1 = document.createElement("img"); + gImage2 = document.createElement("img"); + gImage1.src = "image_rgrg-256x256.png"; + gImage2.src = "image_yellow.png"; + + var p1 = new Promise(function (resolve, reject) { + gImage1.onload = function () { + var promise = createImageBitmap(gImage1); + promise.then(function (bitmap) { + gImageBitmap1 = bitmap; + resolve(true); + }); + }; + }); + + var p2 = new Promise(function (resolve, reject) { + gImage2.onload = function () { + var promise = createImageBitmap(gImage2); + promise.then(function (bitmap) { + gImageBitmap2 = bitmap; + resolve(true); + }); + }; + }); + + var p3 = new Promise(function (resolve, reject) { + // Create an ImageData with random colors. + var width = 5; + var height = 10; + var data = [ + 43, 143, 24, 148, 235, 165, 179, 91, 74, 228, 75, 195, 141, 109, 74, 65, + 25, 177, 3, 201, 128, 105, 12, 199, 196, 93, 241, 131, 250, 121, 232, 189, + 175, 131, 216, 190, 145, 123, 167, 70, 18, 196, 210, 162, 225, 1, 90, 188, + 223, 216, 182, 233, 118, 50, 168, 56, 51, 206, 198, 199, 153, 29, 70, 130, + 180, 135, 135, 51, 148, 46, 44, 144, 80, 171, 142, 95, 25, 178, 102, 110, + 0, 28, 128, 91, 31, 222, 42, 170, 85, 8, 218, 146, 65, 30, 198, 238, 121, + 57, 124, 88, 246, 40, 141, 146, 174, 195, 255, 149, 30, 153, 92, 116, 18, + 241, 6, 111, 39, 162, 85, 143, 237, 159, 201, 244, 93, 68, 14, 246, 143, + 143, 83, 221, 187, 215, 243, 154, 24, 125, 221, 53, 80, 153, 151, 219, + 202, 241, 250, 191, 153, 129, 181, 57, 94, 18, 136, 231, 41, 252, 168, + 207, 213, 103, 118, 172, 53, 213, 184, 204, 25, 29, 249, 199, 101, 55, 49, + 167, 25, 23, 173, 78, 19, 234, 205, 155, 250, 175, 44, 201, 215, 92, 25, + 59, 25, 29, 249, 199, 153, 129, 181, 57, + ]; + + gImageData = new ImageData(new Uint8ClampedArray(data), width, height); + + // Create an ImageBitmap from the above ImageData. + createImageBitmap(gImageData).then( + bitmap => { + gImageBitmap3 = bitmap; + resolve(true); + }, + () => { + reject(); + } + ); + }); + + return Promise.all([p1, p2, p3]); +} |