diff options
Diffstat (limited to 'testing/web-platform/tests/html/canvas/element/manual/drawing-images-to-the-canvas/drawimage_canvas.html')
-rw-r--r-- | testing/web-platform/tests/html/canvas/element/manual/drawing-images-to-the-canvas/drawimage_canvas.html | 203 |
1 files changed, 203 insertions, 0 deletions
diff --git a/testing/web-platform/tests/html/canvas/element/manual/drawing-images-to-the-canvas/drawimage_canvas.html b/testing/web-platform/tests/html/canvas/element/manual/drawing-images-to-the-canvas/drawimage_canvas.html new file mode 100644 index 0000000000..36bd085136 --- /dev/null +++ b/testing/web-platform/tests/html/canvas/element/manual/drawing-images-to-the-canvas/drawimage_canvas.html @@ -0,0 +1,203 @@ +<script src="/resources/testharness.js"></script> +<script src="/resources/testharnessreport.js"></script> +<canvas id="dest" height="100" width="100"></canvas> + +<script> +var sourceCanvasWidth = sourceCanvasHeight = 50; +var destCanvasWidth = destCanvasHeight = 100; +var blueRect = {x: 0, y: 0, w: 50, h: 50}; +var blackRect = {x: 5, y: 5, w: 40, h: 40}; +var redPixel = [255, 0, 0, 255]; +var bluePixel = [0, 0, 255, 255]; +var blackPixel = [0, 0, 0, 255]; +var transparentBlackPixel = [0, 0, 0, 0]; + +var destCanvas = document.getElementById('dest'); +var destCtx = destCanvas.getContext('2d'); +destCtx.imageSmoothingEnabled = false; + +function checkPixel(location, expected) { + var actual = destCtx.getImageData(location[0], location[1], 1, 1).data; + assert_array_equals(actual, expected); +} + +function PreparePixelTests(blueCheck, blackCheck, redCheck, testDescription) { + var pixelTests = []; + for (var i = 0; i < blueCheck.length; i++) { + var message = testDescription + 'Pixel ' + blueCheck[i][0] + ',' + blueCheck[i][1] + ' should be blue.'; + pixelTests.push([message, blueCheck[i], bluePixel]); + } + for (var i = 0; i < blackCheck.length; i++) { + var message = testDescription + 'Pixel ' + blackCheck[i][0] + ',' + blackCheck[i][1] + ' should be black.'; + pixelTests.push([message, blackCheck[i], blackPixel]); + } + for (var i = 0; i < redCheck.length; i++) { + var message = testDescription + 'Pixel ' + redCheck[i][0] + ',' + redCheck[i][1] + ' should be red.'; + pixelTests.push([message, redCheck[i], redPixel]); + } + pixelTests.push([testDescription + 'Pixel outside canvas should be transparent black.\n', [100, 100], transparentBlackPixel]); + return pixelTests; +} + +function drawCanvasOnCanvasUsingDrawImage(sourceRect, destRect, blueCheck, blackCheck, redCheck, testDescription) { + destCtx.fillStyle = 'red'; + destCtx.fillRect(0, 0, destCanvasWidth, destCanvasHeight); + + var sourceCanvas = document.createElement('canvas'); + sourceCanvas.width = sourceCanvasWidth; + sourceCanvas.height = sourceCanvasHeight; + var sourceCtx = sourceCanvas.getContext('2d'); + sourceCtx.fillStyle = 'blue'; + sourceCtx.fillRect(blueRect.x, blueRect.y, blueRect.w, blueRect.h); + sourceCtx.fillStyle = 'black'; + sourceCtx.fillRect(blackRect.x, blackRect.y, blackRect.w, blackRect.h); + if (typeof sourceRect.x !== 'undefined') + destCtx.drawImage(sourceCanvas, sourceRect.x, sourceRect.y, sourceRect.w, sourceRect.h, + destRect.x, destRect.y, destRect.w, destRect.h); + else if (typeof destRect.w !== 'undefined') + destCtx.drawImage(sourceCanvas, destRect.x, destRect.y, destRect.w, destRect.h); + else + destCtx.drawImage(sourceCanvas, destRect.x, destRect.y); + var pixelTests = PreparePixelTests(blueCheck, blackCheck, redCheck, testDescription); + generate_tests(checkPixel, pixelTests); +} + +var testDescription; +var sourceRect = {}, destRect = {}; +var blueCheck, blackCheck, redCheck; + +// 2 arguments, the dest origin is 0,0 +// The source canvas will be copied to the 0,0 position of the destination canvas +testDescription = 'Test scenario 1: dx = 0, dy = 0 --- '; +destRect = {x: 0, y: 0}; +blueCheck = [[0,0], [0,49], [49,0], [49,49]]; +blackCheck = [[5,5], [5,44], [44,5], [44,44]]; +redCheck = [[50,0], [0,50], [50,50], [99,99]]; +drawCanvasOnCanvasUsingDrawImage(sourceRect, destRect, blueCheck, blackCheck, redCheck, testDescription); + +// 2 arguments, the dest origin is not 0,0 +// The source canvas will copied to the 25, 25 position of the destination canvas +testDescription = 'Test scenario 2: dx = 25, dy = 25 --- '; +destRect = {x: 25, y: 25}; +blueCheck = [[25,25], [25,74], [74,25], [74,74]]; +blackCheck = [[30,30], [30,69], [69,30], [69,69]]; +redCheck = [[24,24], [24,75], [75,24], [75,75]]; +drawCanvasOnCanvasUsingDrawImage(sourceRect, destRect, blueCheck, blackCheck, redCheck, testDescription); + +// 4 arguments, the source origin is not 0,0, the dest size is provided +// The source canvas will copied to the 50, 50 position of the destination canvas and +// on an area of 50x50 pixels +testDescription = 'Test scenario 3: dx = 50, dy = 50, dw = 50, dh = 50 --- '; +destRect = {x: 50, y: 50, w: 50, h: 50}; +blueCheck = [[50,50], [50,99], [99,50], [99,99]]; +blackCheck = [[55,55], [55,94], [94,55], [94,94]]; +redCheck = [[0,0], [49,49], [49,99], [99,49]]; +drawCanvasOnCanvasUsingDrawImage(sourceRect, destRect, blueCheck, blackCheck, redCheck, testDescription); + +// 4 arguments, the dest origin is not 0,0 and the dest size is provided but +// does not match the size of the source. The image will be distorted +// The source canvas will copied to the 50,50 position of the destination canvas +// and it will be shrunk to a and area of 20x20 +testDescription = 'Test scenario 4: dx = 50, dy = 50, dw = 20, dh = 20 --- '; +destRect = {x: 50, y: 50, w: 20, h: 20}; +blueCheck = [[50,50], [50,69], [69,50], [69,69]]; +blackCheck = [[52,52], [52,67], [67,52], [67,67]]; +redCheck = [[49,49], [49,70], [70,49], [70,70]]; +drawCanvasOnCanvasUsingDrawImage(sourceRect, destRect, blueCheck, blackCheck, redCheck, testDescription); + +// The source canvas will copied to the 50,50 position of the destination canvas +// over an area of 50x25 pixels +// The copied image will be distorted along the x axis +testDescription = 'Test scenario 5: dx = 50, dy = 50, dw = 50, dh = 20 --- '; +destRect = {x: 50, y: 50, w: 50, h: 20}; +blueCheck = [[50,50], [50,69], [99,50], [99,69]]; +blackCheck = [[55,52], [55,67], [94,52], [94,67]]; +redCheck = [[49,49], [49, 69], [99,49], [99,70]]; +drawCanvasOnCanvasUsingDrawImage(sourceRect, destRect, blueCheck, blackCheck, redCheck, testDescription); + +// 8 arguments, both destination and source origins are 0, 0 +// An area of 25x25 pixels of the source image will be copied to +// an area of 25x25 pixels of the destination canvas +// destCtx.drawImage(sourceCanvas, 0, 0, 25, 25, 0, 0, 25, 25); +testDescription = 'Test scenario 6: sx = 0, sy = 0, sw = 25, sh = 25, dx = 0, dy = 0, dw = 25, dh = 25 --- '; +sourceRect = {x: 0, y: 0, w: 25, h: 25}; +destRect = {x: 0, y: 0, w: 25, h: 25}; +blueCheck = [[0,0], [4,4], [0,24], [24,0]]; +blackCheck = [[5,5], [5,24], [24,5], [24,24]]; +redCheck = [[25,25], [25, 99], [99,25], [99,99]]; +drawCanvasOnCanvasUsingDrawImage(sourceRect, destRect, blueCheck, blackCheck, redCheck, testDescription); + +// 8 arguments the destination origin is not 0,0 +// An area of 25x25 pixels of the source image will be copied to +// an area of 25x25 pixels of the destination canvas in the position 25,25 +testDescription = 'Test scenario 7: sx = 0, sy = 0, sw = 25, sh = 25, dx = 25, dy = 25, dw = 25, dh = 25 --- '; +sourceRect = {x: 0, y: 0, w: 25, h: 25}; +destRect = {x: 25, y: 25, w: 25, h: 25}; +blueCheck = [[25,25], [25,49], [49,25], [29,29]]; +blackCheck = [[30,30], [30,49], [49,30], [49,49]]; +redCheck = [[24,24], [24, 50], [50,24], [50,50]]; +drawCanvasOnCanvasUsingDrawImage(sourceRect, destRect, blueCheck, blackCheck, redCheck, testDescription); + +// The source rectangle overflows the source image +// The source area is clipped to fit the source image +// and the destination are is clipped in the same proportion +testDescription = 'Test scenario 8: sx = 25, sy = 25, sw = 50, sh = 50, dx = 0, dy = 0, dw = 50, dh = 50 --- '; +sourceRect = {x: 25, y: 25, w: 50, h: 50}; +destRect = {x: 0, y: 0, w: 50, h: 50}; +blueCheck = [[0,20], [20,0], [20,20], [24,24]]; +blackCheck = [[0,0], [0,19], [19,0], [19,19]]; +redCheck = [[0,25], [25, 0], [25,25], [99,99]]; +drawCanvasOnCanvasUsingDrawImage(sourceRect, destRect, blueCheck, blackCheck, redCheck, testDescription); + +// The destination rectangle has negative width and height. When the source +// rectangle is outside the source image, the source rectangle must be clipped +// to the source image and the destination rectangle must be clipped in the same +// proportion. +testDescription = 'Test scenario 9: sx = 0, sy = 0, sw = 50, sh = 50, dx = 100, dy = 100, dw = -50, dh = -50 --- '; +sourceRect = {x: 0, y: 0, w: 50, h: 50}; +destRect = {x: 100, y: 100, w: -50, h: -50}; +blueCheck = [[50,50], [50,99], [99,50], [99,99]]; +blackCheck = [[55,55], [55,94], [94,55], [94,94]]; +redCheck = [[0,0], [49,49], [0,99], [99,0]]; +drawCanvasOnCanvasUsingDrawImage(sourceRect, destRect, blueCheck, blackCheck, redCheck, testDescription); + +// The destination rectangle is larger than the destination canvas +// When the destination rectangle is outside the destination image (the scratch bitmap), +// the pixels that land outside the scratch bitmap are discarded, +// as if the destination was an infinite canvas whose rendering was +// clipped to the dimensions of the scratch bitmap. +testDescription = 'Test scenario 10: sx = 0, sy = 0, sw = 50, sh = 50, dx = 0, dy = 0, dw = 200, dh = 200 --- '; +sourceRect = {x: 0, y: 0, w: 50, h: 50}; +destRect = {x: 0, y: 0, w: 200, h: 200}; +blueCheck = [[0,0], [0,99], [99,0], [19,19]]; +blackCheck = [[20,20], [20,99], [99,20], [99,99]]; +redCheck = []; +drawCanvasOnCanvasUsingDrawImage(sourceRect, destRect, blueCheck, blackCheck, redCheck, testDescription); + +// The source rectangle is larger than the source canvas +// The source area is clipped to fit the source image +// and the destination are is clipped in the same proportion +testDescription = 'Test scenario 11: sx = 0, sy = 0, sw = 100, sh = 100, dx = 0, dy = 0, dw = 50, dh = 50 --- '; +sourceRect = {x: 0, y: 0, w: 100, h: 100}; +destRect = {x: 0, y: 0, w: 50, h: 50}; +blueCheck = [[0,0], [1,1], [23,23], [24,24]]; +blackCheck = [[3,3], [3,21], [21,3], [21,21]]; +redCheck = [[0,25], [25, 0], [25,25], [99,99]]; +drawCanvasOnCanvasUsingDrawImage(sourceRect, destRect, blueCheck, blackCheck, redCheck, testDescription); + +// Negative coordinates of the source rectangle. +// The source area is clipped to fit the source image and the destination area +// is clipped in the same proportion. In this specific test: +// - source is clipped by 20 from top and left. +// - destination will get proportionally clipped by 50 from top and left as we +// are scaling the source image 2.5 times. +// - the rect will be drawn from 70,70 to 100,100. +testDescription = 'Test scenario 12: sx = -20, sy = -20, sw = 50, sh = 50, dx = 20, dy = 20, dw = 125, dh = 125 --- '; +sourceRect = {x: -20, y: -20, w: 50, h: 50}; +destRect = {x: 20, y: 20, w: 125, h: 125}; +blueCheck = [[70,70], [70,99], [99,70], [82,82]]; +blackCheck = [[84,84], [84,99], [99,84], [99,99]]; +redCheck = [[0,69], [69, 0], [69,69]]; +drawCanvasOnCanvasUsingDrawImage(sourceRect, destRect, blueCheck, blackCheck, redCheck, testDescription); + +</script>
\ No newline at end of file |