mirror of
https://github.com/servo/servo
synced 2026-05-10 17:12:23 +02:00
160 lines
6.1 KiB
HTML
160 lines
6.1 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>
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function checkNoCrop(imageBitmap)
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{
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var canvas = document.createElement("canvas");
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canvas.width = 50;
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canvas.height = 50;
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var ctx = canvas.getContext("2d");
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ctx.clearRect(0, 0, canvas.width, canvas.height);
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ctx.drawImage(imageBitmap, 0, 0);
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var d = ctx.getImageData(0, 0, 1, 1).data;
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assert_array_equals(d, [255, 0, 0, 255], "This pixel should be red.");
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d = ctx.getImageData(39, 0, 1, 1).data;
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assert_array_equals(d, [0, 255, 0, 255], "This pixel should be green.");
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d = ctx.getImageData(0, 39, 1, 1).data;
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assert_array_equals(d, [0, 0, 255, 255], "This pixel should be blue.");
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d = ctx.getImageData(39, 39, 1, 1).data;
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assert_array_equals(d, [0, 0, 0, 255], "This pixel should be black.");
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d = ctx.getImageData(41, 41, 1, 1).data;
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assert_array_equals(d, [0, 0, 0, 0], "This pixel should be transparent black.");
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}
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function checkCrop(imageBitmap)
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{
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var canvas = document.createElement("canvas");
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canvas.width = 50;
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canvas.height = 50;
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var ctx = canvas.getContext("2d");
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ctx.clearRect(0, 0, canvas.width, canvas.height);
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ctx.drawImage(imageBitmap, 0, 0);
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var d = ctx.getImageData(0, 0, 1, 1).data;
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assert_array_equals(d, [255, 0, 0, 255], "This pixel should be red.");
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d = ctx.getImageData(19, 0, 1, 1).data;
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assert_array_equals(d, [0, 255, 0, 255], "This pixel should be green.");
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d = ctx.getImageData(0, 19, 1, 1).data;
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assert_array_equals(d, [0, 0, 255, 255], "This pixel should be blue.");
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d = ctx.getImageData(19, 19, 1, 1).data;
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assert_array_equals(d, [0, 0, 0, 255], "This pixel should be black.");
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d = ctx.getImageData(21, 21, 1, 1).data;
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assert_array_equals(d, [0, 0, 0, 0], "This pixel should be transparent black.");
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}
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function compareBitmaps(bitmap1, bitmap2)
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{
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var canvas1 = document.createElement("canvas");
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var canvas2 = document.createElement("canvas");
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canvas1.width = 50;
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canvas1.height = 50;
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canvas2.width = 50;
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canvas2.height = 50;
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var ctx1 = canvas1.getContext("2d");
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var ctx2 = canvas2.getContext("2d");
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ctx1.clearRect(0, 0, canvas1.width, canvas1.height);
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ctx2.clearRect(0, 0, canvas2.width, canvas2.height);
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ctx1.drawImage(bitmap1, 0, 0);
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ctx2.drawImage(bitmap2, 0, 0);
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var data1 = ctx1.getImageData(0, 0, 50, 50).data;
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var data2 = ctx2.getImageData(0, 0, 50, 50).data;
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var dataMatched = true;
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for (var i = 0; i < data1.length; i++) {
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if (data1[i] != data2[i]) {
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dataMatched = false;
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break;
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}
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}
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assert_false(dataMatched);
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}
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function testImageBitmap(source)
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{
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return Promise.all([
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createImageBitmap(source, {resizeWidth: 40, resizeHeight: 40, resizeQuality: "high"}),
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createImageBitmap(source, {resizeWidth: 40, resizeHeight: 40, resizeQuality: "medium"}),
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createImageBitmap(source, {resizeWidth: 40, resizeHeight: 40, resizeQuality: "low"}),
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createImageBitmap(source, {resizeWidth: 40, resizeHeight: 40, resizeQuality: "pixelated"}),
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createImageBitmap(source, 5, 5, 10, 10, {resizeWidth: 20, resizeHeight: 20, resizeQuality: "high"}),
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createImageBitmap(source, 5, 5, 10, 10, {resizeWidth: 20, resizeHeight: 20, resizeQuality: "medium"}),
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createImageBitmap(source, 5, 5, 10, 10, {resizeWidth: 20, resizeHeight: 20, resizeQuality: "low"}),
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createImageBitmap(source, 5, 5, 10, 10, {resizeWidth: 20, resizeHeight: 20, resizeQuality: "pixelated"}),
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]).then(([noCropHigh, noCropMedium, noCropLow, noCropPixelated, cropHigh, cropMedium, cropLow, cropPixelated]) => {
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checkNoCrop(noCropHigh);
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checkNoCrop(noCropMedium);
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checkNoCrop(noCropLow);
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checkNoCrop(noCropPixelated);
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checkCrop(cropHigh);
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checkCrop(cropMedium);
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checkCrop(cropLow);
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checkCrop(cropPixelated);
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// Brute-force comparison among all bitmaps is too expensive
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compareBitmaps(noCropHigh, noCropMedium);
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compareBitmaps(noCropLow, noCropPixelated);
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compareBitmaps(cropHigh, cropMedium);
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compareBitmaps(cropLow, cropPixelated);
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});
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}
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function initializeTestCanvas()
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{
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var testCanvas = document.createElement("canvas");
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testCanvas.width = 20;
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testCanvas.height = 20;
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var testCtx = testCanvas.getContext("2d");
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testCtx.fillStyle = "rgb(255, 0, 0)";
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testCtx.fillRect(0, 0, 10, 10);
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testCtx.fillStyle = "rgb(0, 255, 0)";
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testCtx.fillRect(10, 0, 10, 10);
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testCtx.fillStyle = "rgb(0, 0, 255)";
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testCtx.fillRect(0, 10, 10, 10);
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testCtx.fillStyle = "rgb(0, 0, 0)";
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testCtx.fillRect(10, 10, 10, 10);
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return testCanvas;
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}
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// Blob
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promise_test(function() {
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return new Promise((resolve, reject) => {
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var xhr = new XMLHttpRequest();
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xhr.open("GET", '/images/pattern.png');
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xhr.responseType = 'blob';
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xhr.send();
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xhr.onload = function() {
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resolve(xhr.response);
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};
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}).then(testImageBitmap);
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}, 'createImageBitmap from a Blob with resize option.');
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// HTMLCanvasElement
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promise_test(function() {
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var testCanvas = initializeTestCanvas();
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return testImageBitmap(testCanvas);
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}, 'createImageBitmap from a HTMLCanvasElement with resize option.');
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// HTMLImageElement
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promise_test(function() {
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return new Promise((resolve, reject) => {
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var image = new Image();
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image.onload = function() {
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resolve(image);
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}
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image.src = '/images/pattern.png'
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}).then(testImageBitmap);
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}, 'createImageBitmap from a HTMLImageElement with resize option.');
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// ImageBitmap
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promise_test(function() {
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var testCanvas = initializeTestCanvas();
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return createImageBitmap(testCanvas).then(testImageBitmap);
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}, 'createImageBitmap from an ImageBitmap with resize option.');
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// ImageData
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promise_test(function() {
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var canvas = initializeTestCanvas();
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var ctx = canvas.getContext("2d");
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var data = ctx.getImageData(0, 0, 20, 20);
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return testImageBitmap(data);
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}, 'createImageBitmap from an ImageData with resize option.');
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</script>
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