| describe('Core canvas behavior', () => { |
| let container; |
| |
| beforeEach(async () => { |
| await LoadCanvasKit; |
| container = document.createElement('div'); |
| container.innerHTML = ` |
| <canvas width=600 height=600 id=test></canvas> |
| <canvas width=600 height=600 id=report></canvas>`; |
| document.body.appendChild(container); |
| }); |
| |
| afterEach(() => { |
| document.body.removeChild(container); |
| }); |
| |
| gm('picture_test', (canvas) => { |
| const spr = new CanvasKit.PictureRecorder(); |
| const rcanvas = spr.beginRecording( |
| CanvasKit.LTRBRect(0, 0, CANVAS_WIDTH, CANVAS_HEIGHT)); |
| const paint = new CanvasKit.Paint(); |
| paint.setStrokeWidth(2.0); |
| paint.setAntiAlias(true); |
| paint.setColor(CanvasKit.Color(0, 0, 0, 1.0)); |
| paint.setStyle(CanvasKit.PaintStyle.Stroke); |
| |
| rcanvas.drawRRect(CanvasKit.RRectXY([5, 35, 45, 80], 15, 10), paint); |
| |
| const font = new CanvasKit.Font(null, 20); |
| rcanvas.drawText('this picture has a round rect', 5, 100, paint, font); |
| const pic = spr.finishRecordingAsPicture(); |
| spr.delete(); |
| paint.delete(); |
| |
| canvas.drawPicture(pic); |
| |
| const bytes = pic.serialize(); |
| expect(bytes).toBeTruthy(); |
| |
| pic.delete(); |
| }); |
| |
| const uIntColorToCanvasKitColor = (c) => { |
| return CanvasKit.Color( |
| (c >> 16) & 0xFF, |
| (c >> 8) & 0xFF, |
| (c >> 0) & 0xFF, |
| ((c >> 24) & 0xFF) / 255 |
| ); |
| }; |
| |
| it('can compute tonal colors', () => { |
| const input = { |
| ambient: CanvasKit.BLUE, |
| spot: CanvasKit.RED, |
| }; |
| const out = CanvasKit.computeTonalColors(input); |
| expect(new Float32Array(out.ambient)).toEqual(CanvasKit.BLACK); |
| const expectedSpot = [0.173, 0, 0, 0.969]; |
| expect(out.spot.length).toEqual(4); |
| expect(out.spot[0]).toBeCloseTo(expectedSpot[0], 3); |
| expect(out.spot[1]).toBeCloseTo(expectedSpot[1], 3); |
| expect(out.spot[2]).toBeCloseTo(expectedSpot[2], 3); |
| expect(out.spot[3]).toBeCloseTo(expectedSpot[3], 3); |
| }); |
| |
| it('can compute tonal colors with malloced values', () => { |
| const ambientColor = CanvasKit.Malloc(Float32Array, 4); |
| ambientColor.toTypedArray().set(CanvasKit.BLUE); |
| const spotColor = CanvasKit.Malloc(Float32Array, 4); |
| spotColor.toTypedArray().set(CanvasKit.RED); |
| const input = { |
| ambient: ambientColor, |
| spot: spotColor, |
| }; |
| const out = CanvasKit.computeTonalColors(input); |
| expect(new Float32Array(out.ambient)).toEqual(CanvasKit.BLACK); |
| const expectedSpot = [0.173, 0, 0, 0.969]; |
| expect(out.spot.length).toEqual(4); |
| expect(out.spot[0]).toBeCloseTo(expectedSpot[0], 3); |
| expect(out.spot[1]).toBeCloseTo(expectedSpot[1], 3); |
| expect(out.spot[2]).toBeCloseTo(expectedSpot[2], 3); |
| expect(out.spot[3]).toBeCloseTo(expectedSpot[3], 3); |
| }); |
| |
| // This helper is used for all the MakeImageFromEncoded tests. |
| // TODO(kjlubick): rewrite this and callers to use gm |
| function decodeAndDrawSingleFrameImage(imgName, goldName, done) { |
| const imgPromise = fetch(imgName) |
| .then((response) => response.arrayBuffer()); |
| Promise.all([imgPromise, LoadCanvasKit]).then((values) => { |
| const imgData = values[0]; |
| expect(imgData).toBeTruthy(); |
| catchException(done, () => { |
| let img = CanvasKit.MakeImageFromEncoded(imgData); |
| expect(img).toBeTruthy(); |
| const surface = CanvasKit.MakeCanvasSurface('test'); |
| expect(surface).toBeTruthy('Could not make surface'); |
| if (!surface) { |
| done(); |
| return; |
| } |
| const canvas = surface.getCanvas(); |
| let paint = new CanvasKit.Paint(); |
| canvas.drawImage(img, 0, 0, paint); |
| |
| paint.delete(); |
| img.delete(); |
| |
| reportSurface(surface, goldName, done); |
| })(); |
| }); |
| } |
| |
| it('can decode and draw a png', (done) => { |
| decodeAndDrawSingleFrameImage('/assets/mandrill_512.png', 'drawImage_png', done); |
| }); |
| |
| it('can decode and draw a jpg', (done) => { |
| decodeAndDrawSingleFrameImage('/assets/mandrill_h1v1.jpg', 'drawImage_jpg', done); |
| }); |
| |
| it('can decode and draw a (still) gif', (done) => { |
| decodeAndDrawSingleFrameImage('/assets/flightAnim.gif', 'drawImage_gif', done); |
| }); |
| |
| it('can decode and draw a still webp', (done) => { |
| decodeAndDrawSingleFrameImage('/assets/color_wheel.webp', 'drawImage_webp', done); |
| }); |
| |
| it('can readPixels from an Image', (done) => { |
| const imgPromise = fetch('/assets/mandrill_512.png') |
| .then((response) => response.arrayBuffer()); |
| Promise.all([imgPromise, LoadCanvasKit]).then((values) => { |
| const imgData = values[0]; |
| expect(imgData).toBeTruthy(); |
| catchException(done, () => { |
| let img = CanvasKit.MakeImageFromEncoded(imgData); |
| expect(img).toBeTruthy(); |
| const imageInfo = { |
| alphaType: CanvasKit.AlphaType.Unpremul, |
| colorType: CanvasKit.ColorType.RGBA_8888, |
| colorSpace: CanvasKit.ColorSpace.SRGB, |
| width: img.width(), |
| height: img.height(), |
| }; |
| const rowBytes = 4 * img.width(); |
| |
| const pixels = img.readPixels(0, 0, imageInfo); |
| // We know the image is 512 by 512 pixels in size, each pixel |
| // requires 4 bytes (R, G, B, A). |
| expect(pixels.length).toEqual(512 * 512 * 4); |
| |
| // Make enough space for a 5x5 8888 surface (4 bytes for R, G, B, A) |
| const rdsData = CanvasKit.Malloc(Uint8Array, 512 * 5*512 * 4); |
| const pixels2 = rdsData.toTypedArray(); |
| pixels2[0] = 127; // sentinel value, should be overwritten by readPixels. |
| img.readPixels(0, 0, imageInfo, rdsData, rowBytes); |
| expect(rdsData.toTypedArray()[0]).toEqual(pixels[0]); |
| |
| img.delete(); |
| CanvasKit.Free(rdsData); |
| done(); |
| })(); |
| }); |
| }); |
| |
| gm('drawDrawable_animated_gif', (canvas, fetchedByteBuffers) => { |
| let aImg = CanvasKit.MakeAnimatedImageFromEncoded(fetchedByteBuffers[0]); |
| expect(aImg).toBeTruthy(); |
| expect(aImg.getRepetitionCount()).toEqual(-1); // infinite loop |
| expect(aImg.width()).toEqual(320); |
| expect(aImg.height()).toEqual(240); |
| expect(aImg.getFrameCount()).toEqual(60); |
| |
| const drawCurrentFrame = function(x, y) { |
| let img = aImg.makeImageAtCurrentFrame(); |
| canvas.drawImage(img, x, y, null); |
| img.delete(); |
| } |
| |
| drawCurrentFrame(0, 0); |
| |
| let c = aImg.decodeNextFrame(); |
| expect(c).not.toEqual(-1); |
| drawCurrentFrame(300, 0); |
| for(let i = 0; i < 10; i++) { |
| c = aImg.decodeNextFrame(); |
| expect(c).not.toEqual(-1); |
| } |
| drawCurrentFrame(0, 300); |
| for(let i = 0; i < 10; i++) { |
| c = aImg.decodeNextFrame(); |
| expect(c).not.toEqual(-1); |
| } |
| drawCurrentFrame(300, 300); |
| |
| aImg.delete(); |
| }, '/assets/flightAnim.gif'); |
| |
| gm('exif_orientation', (canvas, fetchedByteBuffers) => { |
| canvas.clear(CanvasKit.WHITE); |
| const paint = new CanvasKit.Paint(); |
| const font = new CanvasKit.Font(null, 14); |
| canvas.drawText('The following heart should be rotated 90 CCW due to exif.', |
| 5, 25, paint, font); |
| |
| // TODO(kjlubick) it would be nice to also to test MakeAnimatedImageFromEncoded but |
| // I could not create a sample animated image that worked. |
| const img = CanvasKit.MakeImageFromEncoded(fetchedByteBuffers[0]); |
| expect(img).toBeTruthy(); |
| canvas.drawImage(img, 5, 35, null); |
| |
| img.delete(); |
| paint.delete(); |
| font.delete(); |
| }, '/assets/exif_rotated_heart.jpg'); |
| |
| gm('1x4_from_scratch', (canvas) => { |
| canvas.clear(CanvasKit.WHITE); |
| const paint = new CanvasKit.Paint(); |
| |
| // This creates and draws an Image that is 1 pixel wide, 4 pixels tall with |
| // the colors listed below. |
| const pixels = Uint8Array.from([ |
| 255, 0, 0, 255, // opaque red |
| 0, 255, 0, 255, // opaque green |
| 0, 0, 255, 255, // opaque blue |
| 255, 0, 255, 100, // transparent purple |
| ]); |
| const img = CanvasKit.MakeImage({ |
| 'width': 1, |
| 'height': 4, |
| 'alphaType': CanvasKit.AlphaType.Unpremul, |
| 'colorType': CanvasKit.ColorType.RGBA_8888, |
| 'colorSpace': CanvasKit.ColorSpace.SRGB |
| }, pixels, 4); |
| canvas.drawImage(img, 1, 1, paint); |
| |
| const info = img.getImageInfo(); |
| expect(info).toEqual({ |
| 'width': 1, |
| 'height': 4, |
| 'alphaType': CanvasKit.AlphaType.Unpremul, |
| 'colorType': CanvasKit.ColorType.RGBA_8888, |
| }); |
| const cs = img.getColorSpace(); |
| expect(CanvasKit.ColorSpace.Equals(cs, CanvasKit.ColorSpace.SRGB)).toBeTruthy(); |
| |
| cs.delete(); |
| img.delete(); |
| paint.delete(); |
| }); |
| |
| gm('draw_atlas_with_builders', (canvas, fetchedByteBuffers) => { |
| const atlas = CanvasKit.MakeImageFromEncoded(fetchedByteBuffers[0]); |
| expect(atlas).toBeTruthy(); |
| canvas.clear(CanvasKit.WHITE); |
| |
| const paint = new CanvasKit.Paint(); |
| paint.setColor(CanvasKit.Color(0, 0, 0, 0.8)); |
| |
| // Allocate space for 4 rectangles. |
| const srcs = CanvasKit.Malloc(Float32Array, 16); |
| srcs.toTypedArray().set([ |
| 0, 0, 256, 256, // LTRB |
| 256, 0, 512, 256, |
| 0, 256, 256, 512, |
| 256, 256, 512, 512 |
| ]); |
| |
| // Allocate space for 4 RSXForms. |
| const dsts = CanvasKit.Malloc(Float32Array, 16); |
| dsts.toTypedArray().set([ |
| 0.5, 0, 20, 20, // scos, ssin, tx, ty |
| 0.5, 0, 300, 20, |
| 0.5, 0, 20, 300, |
| 0.5, 0, 300, 300 |
| ]); |
| |
| // Allocate space for 4 colors. |
| const colors = new CanvasKit.Malloc(Uint32Array, 4); |
| colors.toTypedArray().set([ |
| CanvasKit.ColorAsInt( 85, 170, 10, 128), // light green |
| CanvasKit.ColorAsInt( 51, 51, 191, 128), // light blue |
| CanvasKit.ColorAsInt( 0, 0, 0, 128), |
| CanvasKit.ColorAsInt(256, 256, 256, 128), |
| ]); |
| |
| canvas.drawAtlas(atlas, srcs, dsts, paint, CanvasKit.BlendMode.Modulate, colors); |
| |
| atlas.delete(); |
| CanvasKit.Free(srcs); |
| CanvasKit.Free(dsts); |
| CanvasKit.Free(colors); |
| paint.delete(); |
| }, '/assets/mandrill_512.png'); |
| |
| gm('draw_atlas_with_arrays', (canvas, fetchedByteBuffers) => { |
| const atlas = CanvasKit.MakeImageFromEncoded(fetchedByteBuffers[0]); |
| expect(atlas).toBeTruthy(); |
| canvas.clear(CanvasKit.WHITE); |
| |
| const paint = new CanvasKit.Paint(); |
| paint.setColor(CanvasKit.Color(0, 0, 0, 0.8)); |
| |
| const srcs = [ |
| 0, 0, 8, 8, |
| 8, 0, 16, 8, |
| 0, 8, 8, 16, |
| 8, 8, 16, 16, |
| ]; |
| |
| const dsts = [ |
| 10, 0, 0, 0, |
| 10, 0, 100, 0, |
| 10, 0, 0, 100, |
| 10, 0, 100, 100, |
| ]; |
| |
| const colors = Uint32Array.of( |
| CanvasKit.ColorAsInt( 85, 170, 10, 128), // light green |
| CanvasKit.ColorAsInt( 51, 51, 191, 128), // light blue |
| CanvasKit.ColorAsInt( 0, 0, 0, 128), |
| CanvasKit.ColorAsInt(255, 255, 255, 128), |
| ); |
| |
| // sampling for each of the 4 instances |
| const sampling = [ |
| null, |
| {B: 0, C: 0.5}, |
| {filter: CanvasKit.FilterMode.Nearest, mipmap: CanvasKit.MipmapMode.None}, |
| {filter: CanvasKit.FilterMode.Linear, mipmap: CanvasKit.MipmapMode.Nearest}, |
| ]; |
| |
| // positioning for each of the 4 instances |
| const offset = [ |
| [0, 0], [256, 0], [0, 256], [256, 256] |
| ]; |
| |
| canvas.translate(20, 20); |
| for (let i = 0; i < 4; ++i) { |
| canvas.save(); |
| canvas.translate(offset[i][0], offset[i][1]); |
| canvas.drawAtlas(atlas, srcs, dsts, paint, CanvasKit.BlendMode.SrcOver, colors, |
| sampling[i]); |
| canvas.restore(); |
| } |
| |
| atlas.delete(); |
| paint.delete(); |
| }, '/assets/mandrill_16.png'); |
| |
| gm('draw_patch', (canvas, fetchedByteBuffers) => { |
| const image = CanvasKit.MakeImageFromEncoded(fetchedByteBuffers[0]); |
| expect(image).toBeTruthy(); |
| canvas.clear(CanvasKit.WHITE); |
| |
| const paint = new CanvasKit.Paint(); |
| const shader = image.makeShaderOptions(CanvasKit.TileMode.Clamp, |
| CanvasKit.TileMode.Clamp, |
| CanvasKit.FilterMode.Linear, |
| CanvasKit.MipmapMode.None); |
| const cubics = [0,0, 80,50, 160,50, |
| 240,0, 200,80, 200,160, |
| 240,240, 160,160, 80,240, |
| 0,240, 50,160, 0,80]; |
| const colors = [CanvasKit.RED, CanvasKit.BLUE, CanvasKit.YELLOW, CanvasKit.CYAN]; |
| const texs = [0,0, 16,0, 16,16, 0,16]; |
| |
| const params = [ |
| [ 0, 0, colors, null, null, null], |
| [256, 0, null, texs, shader, null], |
| [ 0, 256, colors, texs, shader, null], |
| [256, 256, colors, texs, shader, CanvasKit.BlendMode.Screen], |
| ]; |
| for (const p of params) { |
| paint.setShader(p[4]); |
| canvas.save(); |
| canvas.translate(p[0], p[1]); |
| canvas.drawPatch(cubics, p[2], p[3], p[5], paint); |
| canvas.restore(); |
| } |
| paint.delete(); |
| }, '/assets/mandrill_16.png'); |
| |
| gm('draw_glyphs', (canvas, fetchedByteBuffers) => { |
| canvas.clear(CanvasKit.WHITE); |
| |
| const paint = new CanvasKit.Paint(); |
| const font = new CanvasKit.Font(null, 24); |
| paint.setAntiAlias(true); |
| |
| const DIM = 16; // row/col count for the grid |
| const GAP = 32; // spacing between each glyph |
| const glyphs = new Uint16Array(256); |
| const positions = new Float32Array(256*2); |
| for (let i = 0; i < 256; ++i) { |
| glyphs[i] = i; |
| positions[2*i+0] = (i%DIM) * GAP; |
| positions[2*i+1] = Math.round(i/DIM) * GAP; |
| } |
| canvas.drawGlyphs(glyphs, positions, 16, 20, font, paint); |
| |
| font.delete(); |
| paint.delete(); |
| }); |
| |
| gm('image_decoding_methods', async (canvas) => { |
| canvas.clear(CanvasKit.WHITE); |
| |
| const IMAGE_FILE_PATHS = [ |
| '/assets/brickwork-texture.jpg', |
| '/assets/mandrill_512.png', |
| '/assets/color_wheel.gif' |
| ]; |
| |
| let row = 1; |
| // Test 4 different methods of decoding an image for each of the three images in |
| // IMAGE_FILE_PATHS. |
| // Resulting Images are drawn to visually show that all methods decode correctly. |
| for (const imageFilePath of IMAGE_FILE_PATHS) { |
| const response = await fetch(imageFilePath); |
| const arrayBuffer = await response.arrayBuffer(); |
| // response.blob() is preferable when you don't need both a Blob *and* an ArrayBuffer. |
| const blob = new Blob([ arrayBuffer ]); |
| |
| // Method 1 - decode TypedArray using wasm codecs: |
| const skImage1 = CanvasKit.MakeImageFromEncoded(arrayBuffer); |
| |
| // Method 2 (slower and does not work in Safari) decode using ImageBitmap: |
| const imageBitmap = await createImageBitmap(blob); |
| // Testing showed that transferring an ImageBitmap to a canvas using the 'bitmaprenderer' |
| // context and passing that canvas to CanvasKit.MakeImageFromCanvasImageSource() is |
| // marginally faster than passing ImageBitmap to |
| // CanvasKit.MakeImageFromCanvasImageSource() directly. |
| const canvasBitmapElement = document.createElement('canvas'); |
| canvasBitmapElement.width = imageBitmap.width; |
| canvasBitmapElement.height = imageBitmap.height; |
| const ctxBitmap = canvasBitmapElement.getContext('bitmaprenderer'); |
| ctxBitmap.transferFromImageBitmap(imageBitmap); |
| const skImage2 = CanvasKit.MakeImageFromCanvasImageSource(canvasBitmapElement); |
| |
| // Method 3 (slowest) decode using HTMLImageElement directly: |
| const image = new Image(); |
| // Testing showed that waiting for a load event is faster than waiting on image.decode() |
| // HTMLImageElement.decode() reference: https://developer.mozilla.org/en-US/docs/Web/API/HTMLImageElement/decode |
| const promise1 = new Promise((resolve) => image.addEventListener('load', resolve)); |
| image.src = imageFilePath; |
| await promise1; |
| const skImage3 = CanvasKit.MakeImageFromCanvasImageSource(image); |
| |
| // Method 4 (roundabout, but works if all you have is a Blob) decode from Blob using |
| // HTMLImageElement: |
| const imageObjectUrl = URL.createObjectURL( blob ); |
| const image2 = new Image(); |
| const promise2 = new Promise((resolve) => image2.addEventListener('load', resolve)); |
| image2.src = imageObjectUrl; |
| await promise2; |
| const skImage4 = CanvasKit.MakeImageFromCanvasImageSource(image2); |
| |
| // Draw decoded images |
| const sourceRect = CanvasKit.XYWHRect(0, 0, 150, 150); |
| canvas.drawImageRect(skImage1, sourceRect, CanvasKit.XYWHRect(0, row * 100, 90, 90), null, false); |
| canvas.drawImageRect(skImage2, sourceRect, CanvasKit.XYWHRect(100, row * 100, 90, 90), null, false); |
| canvas.drawImageRect(skImage3, sourceRect, CanvasKit.XYWHRect(200, row * 100, 90, 90), null, false); |
| canvas.drawImageRect(skImage4, sourceRect, CanvasKit.XYWHRect(300, row * 100, 90, 90), null, false); |
| |
| row++; |
| } |
| // Label images with the method used to decode them |
| const paint = new CanvasKit.Paint(); |
| const textFont = new CanvasKit.Font(null, 7); |
| canvas.drawText('WASM Decoding', 0, 90, paint, textFont); |
| canvas.drawText('ImageBitmap Decoding', 100, 90, paint, textFont); |
| canvas.drawText('HTMLImageEl Decoding', 200, 90, paint, textFont); |
| canvas.drawText('Blob Decoding', 300, 90, paint, textFont); |
| }); |
| |
| gm('sweep_gradient', (canvas) => { |
| const paint = new CanvasKit.Paint(); |
| const shader = CanvasKit.Shader.MakeSweepGradient( |
| 100, 100, // X, Y coordinates |
| [CanvasKit.GREEN, CanvasKit.BLUE], |
| [0.0, 1.0], |
| CanvasKit.TileMode.Clamp, |
| ); |
| expect(shader).toBeTruthy('Could not make shader'); |
| |
| paint.setShader(shader); |
| canvas.drawPaint(paint); |
| |
| paint.delete(); |
| shader.delete(); |
| }); |
| |
| // TODO(kjlubick): There's a lot of shared code between the gradient gms |
| // It would be best to deduplicate that in a nice DAMP way. |
| // Inspired by https://fiddle.skia.org/c/b29ce50a341510784ac7d5281586d076 |
| gm('linear_gradients', (canvas) => { |
| canvas.clear(CanvasKit.WHITE); |
| canvas.scale(2, 2); |
| const strokePaint = new CanvasKit.Paint(); |
| strokePaint.setStyle(CanvasKit.PaintStyle.Stroke); |
| strokePaint.setColor(CanvasKit.BLACK); |
| |
| const paint = new CanvasKit.Paint(); |
| paint.setStyle(CanvasKit.PaintStyle.Fill); |
| const transparentGreen = CanvasKit.Color(0, 255, 255, 0); |
| |
| const lgs = CanvasKit.Shader.MakeLinearGradient( |
| [0, 0], [50, 100], // start and stop points |
| [transparentGreen, CanvasKit.BLUE, CanvasKit.RED], |
| [0, 0.65, 1.0], |
| CanvasKit.TileMode.Mirror |
| ); |
| paint.setShader(lgs); |
| let r = CanvasKit.LTRBRect(0, 0, 100, 100); |
| canvas.drawRect(r, paint); |
| canvas.drawRect(r, strokePaint); |
| |
| const lgsPremul = CanvasKit.Shader.MakeLinearGradient( |
| [100, 0], [150, 100], // start and stop points |
| Uint32Array.of( |
| CanvasKit.ColorAsInt(0, 255, 255, 0), |
| CanvasKit.ColorAsInt(0, 0, 255, 255), |
| CanvasKit.ColorAsInt(255, 0, 0, 255)), |
| [0, 0.65, 1.0], |
| CanvasKit.TileMode.Mirror, |
| null, // no local matrix |
| 1 // interpolate colors in premul |
| ); |
| paint.setShader(lgsPremul); |
| r = CanvasKit.LTRBRect(100, 0, 200, 100); |
| canvas.drawRect(r, paint); |
| canvas.drawRect(r, strokePaint); |
| |
| const lgs45 = CanvasKit.Shader.MakeLinearGradient( |
| [0, 100], [50, 200], // start and stop points |
| Float32Array.of(...transparentGreen, ...CanvasKit.BLUE, ...CanvasKit.RED), |
| [0, 0.65, 1.0], |
| CanvasKit.TileMode.Mirror, |
| CanvasKit.Matrix.rotated(Math.PI/4, 0, 100), |
| ); |
| paint.setShader(lgs45); |
| r = CanvasKit.LTRBRect(0, 100, 100, 200); |
| canvas.drawRect(r, paint); |
| canvas.drawRect(r, strokePaint); |
| |
| // malloc'd color array |
| const colors = CanvasKit.Malloc(Float32Array, 12); |
| const typedColorsArray = colors.toTypedArray(); |
| typedColorsArray.set(transparentGreen, 0); |
| typedColorsArray.set(CanvasKit.BLUE, 4); |
| typedColorsArray.set(CanvasKit.RED, 8); |
| const lgs45Premul = CanvasKit.Shader.MakeLinearGradient( |
| [100, 100], [150, 200], // start and stop points |
| typedColorsArray, |
| [0, 0.65, 1.0], |
| CanvasKit.TileMode.Mirror, |
| CanvasKit.Matrix.rotated(Math.PI/4, 100, 100), |
| 1 // interpolate colors in premul |
| ); |
| CanvasKit.Free(colors); |
| paint.setShader(lgs45Premul); |
| r = CanvasKit.LTRBRect(100, 100, 200, 200); |
| canvas.drawRect(r, paint); |
| canvas.drawRect(r, strokePaint); |
| |
| lgs.delete(); |
| lgs45.delete(); |
| lgsPremul.delete(); |
| lgs45Premul.delete(); |
| strokePaint.delete(); |
| paint.delete(); |
| }); |
| |
| gm('radial_gradients', (canvas) => { |
| canvas.clear(CanvasKit.WHITE); |
| canvas.scale(2, 2); |
| const strokePaint = new CanvasKit.Paint(); |
| strokePaint.setStyle(CanvasKit.PaintStyle.Stroke); |
| strokePaint.setColor(CanvasKit.BLACK); |
| |
| const paint = new CanvasKit.Paint(); |
| paint.setStyle(CanvasKit.PaintStyle.Fill); |
| const transparentGreen = CanvasKit.Color(0, 255, 255, 0); |
| |
| const rgs = CanvasKit.Shader.MakeRadialGradient( |
| [50, 50], 50, // center, radius |
| [transparentGreen, CanvasKit.BLUE, CanvasKit.RED], |
| [0, 0.65, 1.0], |
| CanvasKit.TileMode.Mirror |
| ); |
| paint.setShader(rgs); |
| let r = CanvasKit.LTRBRect(0, 0, 100, 100); |
| canvas.drawRect(r, paint); |
| canvas.drawRect(r, strokePaint); |
| |
| const rgsPremul = CanvasKit.Shader.MakeRadialGradient( |
| [150, 50], 50, // center, radius |
| [transparentGreen, CanvasKit.BLUE, CanvasKit.RED], |
| [0, 0.65, 1.0], |
| CanvasKit.TileMode.Mirror, |
| null, // no local matrix |
| 1 // interpolate colors in premul |
| ); |
| paint.setShader(rgsPremul); |
| r = CanvasKit.LTRBRect(100, 0, 200, 100); |
| canvas.drawRect(r, paint); |
| canvas.drawRect(r, strokePaint); |
| |
| const rgsSkew = CanvasKit.Shader.MakeRadialGradient( |
| [50, 150], 50, // center, radius |
| [transparentGreen, CanvasKit.BLUE, CanvasKit.RED], |
| [0, 0.65, 1.0], |
| CanvasKit.TileMode.Mirror, |
| CanvasKit.Matrix.skewed(0.5, 0, 100, 100), |
| null, // color space |
| ); |
| paint.setShader(rgsSkew); |
| r = CanvasKit.LTRBRect(0, 100, 100, 200); |
| canvas.drawRect(r, paint); |
| canvas.drawRect(r, strokePaint); |
| |
| const rgsSkewPremul = CanvasKit.Shader.MakeRadialGradient( |
| [150, 150], 50, // center, radius |
| [transparentGreen, CanvasKit.BLUE, CanvasKit.RED], |
| [0, 0.65, 1.0], |
| CanvasKit.TileMode.Mirror, |
| CanvasKit.Matrix.skewed(0.5, 0, 100, 100), |
| 1, // interpolate colors in premul |
| null, // color space |
| ); |
| paint.setShader(rgsSkewPremul); |
| r = CanvasKit.LTRBRect(100, 100, 200, 200); |
| canvas.drawRect(r, paint); |
| canvas.drawRect(r, strokePaint); |
| |
| rgs.delete(); |
| rgsPremul.delete(); |
| rgsSkew.delete(); |
| rgsSkewPremul.delete(); |
| strokePaint.delete(); |
| paint.delete(); |
| }); |
| |
| gm('conical_gradients', (canvas) => { |
| canvas.clear(CanvasKit.WHITE); |
| canvas.scale(2, 2); |
| const strokePaint = new CanvasKit.Paint(); |
| strokePaint.setStyle(CanvasKit.PaintStyle.Stroke); |
| strokePaint.setColor(CanvasKit.BLACK); |
| |
| const paint = new CanvasKit.Paint(); |
| paint.setStyle(CanvasKit.PaintStyle.Fill); |
| paint.setAntiAlias(true); |
| const transparentGreen = CanvasKit.Color(0, 255, 255, 0); |
| |
| const cgs = CanvasKit.Shader.MakeTwoPointConicalGradient( |
| [80, 10], 15, // start, radius |
| [10, 110], 60, // end, radius |
| [transparentGreen, CanvasKit.BLUE, CanvasKit.RED], |
| [0, 0.65, 1.0], |
| CanvasKit.TileMode.Mirror, |
| null, // no local matrix |
| ); |
| paint.setShader(cgs); |
| let r = CanvasKit.LTRBRect(0, 0, 100, 100); |
| canvas.drawRect(r, paint); |
| canvas.drawRect(r, strokePaint); |
| |
| const cgsPremul = CanvasKit.Shader.MakeTwoPointConicalGradient( |
| [180, 10], 15, // start, radius |
| [110, 110], 60, // end, radius |
| [transparentGreen, CanvasKit.BLUE, CanvasKit.RED], |
| [0, 0.65, 1.0], |
| CanvasKit.TileMode.Mirror, |
| null, // no local matrix |
| 1, // interpolate colors in premul |
| null, // color space |
| ); |
| paint.setShader(cgsPremul); |
| r = CanvasKit.LTRBRect(100, 0, 200, 100); |
| canvas.drawRect(r, paint); |
| canvas.drawRect(r, strokePaint); |
| |
| const cgs45 = CanvasKit.Shader.MakeTwoPointConicalGradient( |
| [80, 110], 15, // start, radius |
| [10, 210], 60, // end, radius |
| [transparentGreen, CanvasKit.BLUE, CanvasKit.RED], |
| [0, 0.65, 1.0], |
| CanvasKit.TileMode.Mirror, |
| CanvasKit.Matrix.rotated(Math.PI/4, 0, 100), |
| null, // color space |
| ); |
| paint.setShader(cgs45); |
| r = CanvasKit.LTRBRect(0, 100, 100, 200); |
| canvas.drawRect(r, paint); |
| canvas.drawRect(r, strokePaint); |
| |
| const cgs45Premul = CanvasKit.Shader.MakeTwoPointConicalGradient( |
| [180, 110], 15, // start, radius |
| [110, 210], 60, // end, radius |
| [transparentGreen, CanvasKit.BLUE, CanvasKit.RED], |
| [0, 0.65, 1.0], |
| CanvasKit.TileMode.Mirror, |
| CanvasKit.Matrix.rotated(Math.PI/4, 100, 100), |
| 1, // interpolate colors in premul |
| null, // color space |
| ); |
| paint.setShader(cgs45Premul); |
| r = CanvasKit.LTRBRect(100, 100, 200, 200); |
| canvas.drawRect(r, paint); |
| canvas.drawRect(r, strokePaint); |
| |
| cgs.delete(); |
| cgsPremul.delete(); |
| cgs45.delete(); |
| strokePaint.delete(); |
| paint.delete(); |
| }); |
| |
| gm('blur_filters', (canvas) => { |
| const pathUL = starPath(CanvasKit, 100, 100, 80); |
| const pathBR = starPath(CanvasKit, 400, 300, 80); |
| const paint = new CanvasKit.Paint(); |
| const textFont = new CanvasKit.Font(null, 24); |
| |
| canvas.drawText('Above: MaskFilter', 20, 220, paint, textFont); |
| canvas.drawText('Right: ImageFilter', 20, 260, paint, textFont); |
| |
| paint.setColor(CanvasKit.BLUE); |
| |
| const blurMask = CanvasKit.MaskFilter.MakeBlur(CanvasKit.BlurStyle.Normal, 5, true); |
| paint.setMaskFilter(blurMask); |
| canvas.drawPath(pathUL, paint); |
| |
| const blurIF = CanvasKit.ImageFilter.MakeBlur(8, 1, CanvasKit.TileMode.Decal, null); |
| paint.setImageFilter(blurIF); |
| canvas.drawPath(pathBR, paint); |
| |
| pathUL.delete(); |
| pathBR.delete(); |
| paint.delete(); |
| blurMask.delete(); |
| blurIF.delete(); |
| textFont.delete(); |
| }); |
| |
| gm('combined_filters', (canvas, fetchedByteBuffers) => { |
| const img = CanvasKit.MakeImageFromEncoded(fetchedByteBuffers[0]); |
| expect(img).toBeTruthy(); |
| |
| canvas.clear(CanvasKit.WHITE); |
| const paint = new CanvasKit.Paint(); |
| paint.setAntiAlias(true); |
| paint.setColor(CanvasKit.Color(0, 255, 0, 1.0)); |
| const redCF = CanvasKit.ColorFilter.MakeBlend( |
| CanvasKit.Color(255, 0, 0, 0.1), CanvasKit.BlendMode.SrcOver); |
| const redIF = CanvasKit.ImageFilter.MakeColorFilter(redCF, null); |
| const blurIF = CanvasKit.ImageFilter.MakeBlur(8, 0.2, CanvasKit.TileMode.Decal, null); |
| const combined = CanvasKit.ImageFilter.MakeCompose(redIF, blurIF); |
| |
| // rotate 10 degrees centered on 200, 200 |
| const m = CanvasKit.Matrix.rotated(Math.PI/18, 200, 200); |
| const filtering = { filter: CanvasKit.FilterMode.Linear }; |
| const rotated = CanvasKit.ImageFilter.MakeMatrixTransform(m, filtering, combined); |
| paint.setImageFilter(rotated); |
| |
| //canvas.rotate(10, 200, 200); |
| canvas.drawImage(img, 0, 0, paint); |
| canvas.drawRect(CanvasKit.LTRBRect(5, 35, 45, 80), paint); |
| |
| paint.delete(); |
| redIF.delete(); |
| redCF.delete(); |
| blurIF.delete(); |
| combined.delete(); |
| rotated.delete(); |
| img.delete(); |
| }, '/assets/mandrill_512.png'); |
| |
| gm('animated_filters', (canvas, fetchedByteBuffers) => { |
| const img = CanvasKit.MakeAnimatedImageFromEncoded(fetchedByteBuffers[0]); |
| expect(img).toBeTruthy(); |
| img.decodeNextFrame(); |
| img.decodeNextFrame(); |
| canvas.clear(CanvasKit.WHITE); |
| const paint = new CanvasKit.Paint(); |
| paint.setAntiAlias(true); |
| paint.setColor(CanvasKit.Color(0, 255, 0, 1.0)); |
| const redCF = CanvasKit.ColorFilter.MakeBlend( |
| CanvasKit.Color(255, 0, 0, 0.1), CanvasKit.BlendMode.SrcOver); |
| const redIF = CanvasKit.ImageFilter.MakeColorFilter(redCF, null); |
| const blurIF = CanvasKit.ImageFilter.MakeBlur(8, 0.2, CanvasKit.TileMode.Decal, null); |
| const combined = CanvasKit.ImageFilter.MakeCompose(redIF, blurIF); |
| paint.setImageFilter(combined); |
| |
| const frame = img.makeImageAtCurrentFrame(); |
| canvas.drawImage(frame, 100, 50, paint); |
| |
| paint.delete(); |
| redIF.delete(); |
| redCF.delete(); |
| blurIF.delete(); |
| combined.delete(); |
| frame.delete(); |
| img.delete(); |
| }, '/assets/flightAnim.gif'); |
| |
| gm('drawImageVariants', (canvas, fetchedByteBuffers) => { |
| const img = CanvasKit.MakeImageFromEncoded(fetchedByteBuffers[0]); |
| expect(img).toBeTruthy(); |
| |
| canvas.clear(CanvasKit.WHITE); |
| canvas.scale(2, 2); |
| const paint = new CanvasKit.Paint(); |
| const clipTo = (x, y) => { |
| canvas.save(); |
| canvas.clipRect(CanvasKit.XYWHRect(x, y, 128, 128), CanvasKit.ClipOp.Intersect); |
| }; |
| |
| clipTo(0, 0); |
| canvas.drawImage(img, 0, 0, paint); |
| canvas.restore(); |
| |
| clipTo(128, 0); |
| canvas.drawImageCubic(img, 128, 0, 1/3, 1/3, null); |
| canvas.restore(); |
| |
| clipTo(0, 128); |
| canvas.drawImageOptions(img, 0, 128, CanvasKit.FilterMode.Linear, CanvasKit.MipmapMode.None, null); |
| canvas.restore(); |
| |
| const mipImg = img.makeCopyWithDefaultMipmaps(); |
| clipTo(128, 128); |
| canvas.drawImageOptions(mipImg, 128, 128, |
| CanvasKit.FilterMode.Nearest, CanvasKit.MipmapMode.Nearest, null); |
| canvas.restore(); |
| |
| paint.delete(); |
| mipImg.delete(); |
| img.delete(); |
| }, '/assets/mandrill_512.png'); |
| |
| gm('drawImageRectVariants', (canvas, fetchedByteBuffers) => { |
| const img = CanvasKit.MakeImageFromEncoded(fetchedByteBuffers[0]); |
| expect(img).toBeTruthy(); |
| |
| canvas.clear(CanvasKit.WHITE); |
| const paint = new CanvasKit.Paint(); |
| const src = CanvasKit.XYWHRect(100, 100, 128, 128); |
| canvas.drawImageRect(img, src, CanvasKit.XYWHRect(0, 0, 256, 256), paint); |
| canvas.drawImageRectCubic(img, src, CanvasKit.XYWHRect(256, 0, 256, 256), 1/3, 1/3); |
| canvas.drawImageRectOptions(img, src, CanvasKit.XYWHRect(0, 256, 256, 256), |
| CanvasKit.FilterMode.Linear, CanvasKit.MipmapMode.None); |
| const mipImg = img.makeCopyWithDefaultMipmaps(); |
| canvas.drawImageRectOptions(mipImg, src, CanvasKit.XYWHRect(256, 256, 256, 256), |
| CanvasKit.FilterMode.Nearest, CanvasKit.MipmapMode.Nearest); |
| |
| paint.delete(); |
| mipImg.delete(); |
| img.delete(); |
| }, '/assets/mandrill_512.png'); |
| |
| gm('drawImage_skp', (canvas, fetchedByteBuffers) => { |
| const pic = CanvasKit.MakePicture(fetchedByteBuffers[0]); |
| canvas.clear(CanvasKit.TRANSPARENT); |
| canvas.drawPicture(pic); |
| // The asset below can be re-downloaded from |
| // https://fiddle.skia.org/c/cbb8dee39e9f1576cd97c2d504db8eee |
| }, '/assets/red_line.skp'); |
| |
| it('can draw once using drawOnce utility method', (done) => { |
| const surface = CanvasKit.MakeCanvasSurface('test'); |
| expect(surface).toBeTruthy('Could not make surface'); |
| if (!surface) { |
| done(); |
| return; |
| } |
| |
| const drawFrame = (canvas) => { |
| const paint = new CanvasKit.Paint(); |
| paint.setStrokeWidth(1.0); |
| paint.setAntiAlias(true); |
| paint.setColor(CanvasKit.Color(0, 0, 0, 1.0)); |
| paint.setStyle(CanvasKit.PaintStyle.Stroke); |
| const path = new CanvasKit.Path(); |
| path.moveTo(20, 5); |
| path.lineTo(30, 20); |
| path.lineTo(40, 10); |
| canvas.drawPath(path, paint); |
| path.delete(); |
| paint.delete(); |
| // surface hasn't been flushed yet (nor should we call flush |
| // ourselves), so reportSurface would likely be blank if we |
| // were to call it. |
| done(); |
| }; |
| surface.drawOnce(drawFrame); |
| // Reminder: drawOnce is async. In this test, we are just making |
| // sure the drawOnce function is there and doesn't crash, so we can |
| // just call done() when the frame is rendered. |
| }); |
| |
| it('can draw client-supplied dirty rects', (done) => { |
| // dirty rects are only honored by software (CPU) canvases today. |
| const surface = CanvasKit.MakeSWCanvasSurface('test'); |
| expect(surface).toBeTruthy('Could not make surface'); |
| if (!surface) { |
| done(); |
| return; |
| } |
| |
| const drawFrame = (canvas) => { |
| const paint = new CanvasKit.Paint(); |
| paint.setStrokeWidth(1.0); |
| paint.setAntiAlias(true); |
| paint.setColor(CanvasKit.Color(0, 0, 0, 1.0)); |
| paint.setStyle(CanvasKit.PaintStyle.Stroke); |
| const path = new CanvasKit.Path(); |
| path.moveTo(20, 5); |
| path.lineTo(30, 20); |
| path.lineTo(40, 10); |
| canvas.drawPath(path, paint); |
| path.delete(); |
| paint.delete(); |
| done(); |
| }; |
| const dirtyRect = CanvasKit.XYWHRect(10, 10, 15, 15); |
| surface.drawOnce(drawFrame, dirtyRect); |
| // We simply ensure that passing a dirty rect doesn't crash. |
| }); |
| |
| it('can use DecodeCache APIs', () => { |
| const initialLimit = CanvasKit.getDecodeCacheLimitBytes(); |
| expect(initialLimit).toBeGreaterThan(1024 * 1024); |
| |
| const newLimit = 42 * 1024 * 1024; |
| CanvasKit.setDecodeCacheLimitBytes(newLimit); |
| expect(CanvasKit.getDecodeCacheLimitBytes()).toEqual(newLimit); |
| |
| // We cannot make any assumptions about this value, |
| // so we just make sure it doesn't crash. |
| CanvasKit.getDecodeCacheUsedBytes(); |
| }); |
| |
| gm('combined_shaders', (canvas) => { |
| const rShader = CanvasKit.Shader.Color(CanvasKit.Color(255, 0, 0, 1.0)); // deprecated |
| const gShader = CanvasKit.Shader.MakeColor(CanvasKit.Color(0, 255, 0, 0.6)); |
| |
| const rgShader = CanvasKit.Shader.MakeBlend(CanvasKit.BlendMode.SrcOver, rShader, gShader); |
| |
| const p = new CanvasKit.Paint(); |
| p.setShader(rgShader); |
| canvas.drawPaint(p); |
| |
| rShader.delete(); |
| gShader.delete(); |
| rgShader.delete(); |
| p.delete(); |
| }); |
| |
| it('exports consts correctly', () => { |
| expect(CanvasKit.TRANSPARENT).toEqual(Float32Array.of(0, 0, 0, 0)); |
| expect(CanvasKit.RED).toEqual(Float32Array.of(1, 0, 0, 1)); |
| |
| expect(CanvasKit.QUAD_VERB).toEqual(2); |
| expect(CanvasKit.CONIC_VERB).toEqual(3); |
| |
| expect(CanvasKit.SaveLayerInitWithPrevious).toEqual(4); |
| expect(CanvasKit.SaveLayerF16ColorType).toEqual(16); |
| }); |
| |
| it('can set color on a paint and get it as four floats', () => { |
| const paint = new CanvasKit.Paint(); |
| paint.setColor(CanvasKit.Color4f(3.3, 2.2, 1.1, 0.5)); |
| expect(paint.getColor()).toEqual(Float32Array.of(3.3, 2.2, 1.1, 0.5)); |
| |
| paint.setColorComponents(0.5, 0.6, 0.7, 0.8); |
| expect(paint.getColor()).toEqual(Float32Array.of(0.5, 0.6, 0.7, 0.8)); |
| |
| paint.setColorInt(CanvasKit.ColorAsInt(50, 100, 150, 200)); |
| let color = paint.getColor(); |
| expect(color.length).toEqual(4); |
| expect(color[0]).toBeCloseTo(50/255, 5); // Red |
| expect(color[1]).toBeCloseTo(100/255, 5); // Green |
| expect(color[2]).toBeCloseTo(150/255, 5); // Blue |
| expect(color[3]).toBeCloseTo(200/255, 5); // Alpha |
| |
| paint.setColorInt(0xFF000000); |
| expect(paint.getColor()).toEqual(Float32Array.of(0, 0, 0, 1.0)); |
| }); |
| |
| gm('draw shadow', (canvas) => { |
| const lightRadius = 20; |
| const lightPos = [500,500,20]; |
| const zPlaneParams = [0,0,1]; |
| const path = starPath(CanvasKit); |
| const textFont = new CanvasKit.Font(null, 24); |
| const textPaint = new CanvasKit.Paint(); |
| |
| canvas.drawShadow(path, zPlaneParams, lightPos, lightRadius, |
| CanvasKit.BLACK, CanvasKit.MAGENTA, 0); |
| canvas.drawText('Default Flags', 5, 250, textPaint, textFont); |
| |
| let bounds = CanvasKit.getShadowLocalBounds(CanvasKit.Matrix.identity(), |
| path, zPlaneParams, lightPos, lightRadius, 0); |
| expectTypedArraysToEqual(bounds, Float32Array.of(-3.64462, -12.67541, 245.50, 242.59164)); |
| |
| bounds = CanvasKit.getShadowLocalBounds(CanvasKit.M44.identity(), |
| path, zPlaneParams, lightPos, lightRadius, 0); |
| expectTypedArraysToEqual(bounds, Float32Array.of(-3.64462, -12.67541, 245.50, 242.59164)); |
| |
| // Test that the APIs accept Malloc objs and the Malloced typearray |
| const mZPlane = CanvasKit.Malloc(Float32Array, 3); |
| mZPlane.toTypedArray().set(zPlaneParams); |
| const mLight = CanvasKit.Malloc(Float32Array, 3); |
| const lightTA = mLight.toTypedArray(); |
| lightTA.set(lightPos); |
| |
| canvas.translate(250, 250); |
| canvas.drawShadow(path, mZPlane, lightTA, lightRadius, |
| CanvasKit.BLACK, CanvasKit.MAGENTA, |
| CanvasKit.ShadowTransparentOccluder | CanvasKit.ShadowGeometricOnly | CanvasKit.ShadowDirectionalLight); |
| canvas.drawText('All Flags', 5, 250, textPaint, textFont); |
| |
| const outBounds = new Float32Array(4); |
| CanvasKit.getShadowLocalBounds(CanvasKit.Matrix.rotated(Math.PI / 6), |
| path, mZPlane, mLight, lightRadius, |
| CanvasKit.ShadowTransparentOccluder | CanvasKit.ShadowGeometricOnly | CanvasKit.ShadowDirectionalLight, |
| outBounds); |
| expectTypedArraysToEqual(outBounds, Float32Array.of(-31.6630249, -15.24227, 245.5, 252.94101)); |
| |
| CanvasKit.Free(mZPlane); |
| CanvasKit.Free(mLight); |
| |
| path.delete(); |
| textFont.delete(); |
| textPaint.delete(); |
| }); |
| |
| gm('fractal_noise_shader', (canvas) => { |
| const shader = CanvasKit.Shader.MakeFractalNoise(0.1, 0.05, 2, 0, 0, 0); |
| const paint = new CanvasKit.Paint(); |
| paint.setColor(CanvasKit.BLACK); |
| paint.setShader(shader); |
| canvas.drawPaint(paint); |
| paint.delete(); |
| shader.delete(); |
| }); |
| |
| gm('turbulance_shader', (canvas) => { |
| const shader = CanvasKit.Shader.MakeTurbulence(0.1, 0.05, 2, 117, 0, 0); |
| const paint = new CanvasKit.Paint(); |
| paint.setColor(CanvasKit.BLACK); |
| paint.setShader(shader); |
| canvas.drawPaint(paint); |
| paint.delete(); |
| shader.delete(); |
| }); |
| |
| gm('fractal_noise_tiled_shader', (canvas) => { |
| const shader = CanvasKit.Shader.MakeFractalNoise(0.1, 0.05, 2, 0, 80, 80); |
| const paint = new CanvasKit.Paint(); |
| paint.setColor(CanvasKit.BLACK); |
| paint.setShader(shader); |
| canvas.drawPaint(paint); |
| paint.delete(); |
| shader.delete(); |
| }); |
| |
| gm('turbulance_tiled_shader', (canvas) => { |
| const shader = CanvasKit.Shader.MakeTurbulence(0.1, 0.05, 2, 117, 80, 80); |
| const paint = new CanvasKit.Paint(); |
| paint.setColor(CanvasKit.BLACK); |
| paint.setShader(shader); |
| canvas.drawPaint(paint); |
| paint.delete(); |
| shader.delete(); |
| }); |
| |
| describe('ColorSpace Support', () => { |
| it('Can create an SRGB 8888 surface', () => { |
| const colorSpace = CanvasKit.ColorSpace.SRGB; |
| const surface = CanvasKit.MakeCanvasSurface('test', CanvasKit.ColorSpace.SRGB); |
| expect(surface).toBeTruthy('Could not make surface'); |
| let info = surface.imageInfo(); |
| expect(info.alphaType).toEqual(CanvasKit.AlphaType.Unpremul); |
| expect(info.colorType).toEqual(CanvasKit.ColorType.RGBA_8888); |
| expect(CanvasKit.ColorSpace.Equals(info.colorSpace, colorSpace)) |
| .toBeTruthy("Surface not created with correct color space."); |
| |
| const mObj = CanvasKit.Malloc(Uint8Array, CANVAS_WIDTH * CANVAS_HEIGHT * 4); |
| mObj.toTypedArray()[0] = 127; // sentinel value. Should be overwritten by readPixels. |
| const canvas = surface.getCanvas(); |
| canvas.clear(CanvasKit.TRANSPARENT); |
| const pixels = canvas.readPixels(0, 0, { |
| width: CANVAS_WIDTH, |
| height: CANVAS_HEIGHT, |
| colorType: CanvasKit.ColorType.RGBA_8888, |
| alphaType: CanvasKit.AlphaType.Unpremul, |
| colorSpace: colorSpace |
| }, mObj, 4 * CANVAS_WIDTH); |
| expect(pixels).toBeTruthy('Could not read pixels from surface'); |
| expect(pixels[0] !== 127).toBeTruthy(); |
| expect(pixels[0]).toEqual(mObj.toTypedArray()[0]); |
| CanvasKit.Free(mObj); |
| surface.delete(); |
| }); |
| it('Can create a Display P3 surface', () => { |
| const colorSpace = CanvasKit.ColorSpace.DISPLAY_P3; |
| const surface = CanvasKit.MakeCanvasSurface('test', CanvasKit.ColorSpace.DISPLAY_P3); |
| expect(surface).toBeTruthy('Could not make surface'); |
| if (!surface.reportBackendTypeIsGPU()) { |
| console.log('Not expecting color space support in cpu backed suface.'); |
| return; |
| } |
| let info = surface.imageInfo(); |
| expect(info.alphaType).toEqual(CanvasKit.AlphaType.Unpremul); |
| expect(info.colorType).toEqual(CanvasKit.ColorType.RGBA_F16); |
| expect(CanvasKit.ColorSpace.Equals(info.colorSpace, colorSpace)) |
| .toBeTruthy("Surface not created with correct color space."); |
| |
| const pixels = surface.getCanvas().readPixels(0, 0, { |
| width: CANVAS_WIDTH, |
| height: CANVAS_HEIGHT, |
| colorType: CanvasKit.ColorType.RGBA_F16, |
| alphaType: CanvasKit.AlphaType.Unpremul, |
| colorSpace: colorSpace |
| }); |
| expect(pixels).toBeTruthy('Could not read pixels from surface'); |
| }); |
| it('Can create an Adobe RGB surface', () => { |
| const colorSpace = CanvasKit.ColorSpace.ADOBE_RGB; |
| const surface = CanvasKit.MakeCanvasSurface('test', CanvasKit.ColorSpace.ADOBE_RGB); |
| expect(surface).toBeTruthy('Could not make surface'); |
| if (!surface.reportBackendTypeIsGPU()) { |
| console.log('Not expecting color space support in cpu backed surface.'); |
| return; |
| } |
| let info = surface.imageInfo(); |
| expect(info.alphaType).toEqual(CanvasKit.AlphaType.Unpremul); |
| expect(info.colorType).toEqual(CanvasKit.ColorType.RGBA_F16); |
| expect(CanvasKit.ColorSpace.Equals(info.colorSpace, colorSpace)) |
| .toBeTruthy("Surface not created with correct color space."); |
| |
| const pixels = surface.getCanvas().readPixels(0, 0, { |
| width: CANVAS_WIDTH, |
| height: CANVAS_HEIGHT, |
| colorType: CanvasKit.ColorType.RGBA_F16, |
| alphaType: CanvasKit.AlphaType.Unpremul, |
| colorSpace: colorSpace |
| }); |
| expect(pixels).toBeTruthy('Could not read pixels from surface'); |
| }); |
| |
| it('combine draws from several color spaces', () => { |
| const surface = CanvasKit.MakeCanvasSurface('test', CanvasKit.ColorSpace.ADOBE_RGB); |
| expect(surface).toBeTruthy('Could not make surface'); |
| if (!surface.reportBackendTypeIsGPU()) { |
| console.log('Not expecting color space support in cpu backed suface.'); |
| return; |
| } |
| const canvas = surface.getCanvas(); |
| |
| let paint = new CanvasKit.Paint(); |
| paint.setColor(CanvasKit.RED, CanvasKit.ColorSpace.ADOBE_RGB); |
| canvas.drawPaint(paint); |
| paint.setColor(CanvasKit.RED, CanvasKit.ColorSpace.DISPLAY_P3); // 93.7 in adobeRGB |
| canvas.drawRect(CanvasKit.LTRBRect(200, 0, 400, 600), paint); |
| paint.setColor(CanvasKit.RED, CanvasKit.ColorSpace.SRGB); // 85.9 in adobeRGB |
| canvas.drawRect(CanvasKit.LTRBRect(400, 0, 600, 600), paint); |
| |
| // this test paints three bands of red, each the maximum red that a color space supports. |
| // They are each represented by skia by some color in the Adobe RGB space of the surface, |
| // as floats between 0 and 1. |
| |
| // TODO(nifong) readpixels and verify correctness after f32 readpixels bug is fixed |
| }); |
| }); // end describe('ColorSpace Support') |
| |
| describe('DOMMatrix support', () => { |
| gm('sweep_gradient_dommatrix', (canvas) => { |
| const paint = new CanvasKit.Paint(); |
| const shader = CanvasKit.Shader.MakeSweepGradient( |
| 100, 100, // x y coordinates |
| [CanvasKit.GREEN, CanvasKit.BLUE], |
| [0.0, 1.0], |
| CanvasKit.TileMode.Clamp, |
| new DOMMatrix().translate(-10, 100), |
| ); |
| expect(shader).toBeTruthy('Could not make shader'); |
| if (!shader) { |
| return; |
| } |
| |
| paint.setShader(shader); |
| canvas.drawPaint(paint); |
| |
| paint.delete(); |
| shader.delete(); |
| }); |
| |
| const radiansToDegrees = (rad) => { |
| return (rad / Math.PI) * 180; |
| }; |
| |
| // this should draw the same as concat_with4x4_canvas |
| gm('concat_dommatrix', (canvas) => { |
| const path = starPath(CanvasKit, CANVAS_WIDTH/2, CANVAS_HEIGHT/2); |
| const paint = new CanvasKit.Paint(); |
| paint.setAntiAlias(true); |
| canvas.clear(CanvasKit.WHITE); |
| canvas.concat(new DOMMatrix().translate(CANVAS_WIDTH/2, 0, 0)); |
| canvas.concat(new DOMMatrix().rotateAxisAngle(1, 0, 0, radiansToDegrees(Math.PI/3))); |
| canvas.concat(new DOMMatrix().rotateAxisAngle(0, 1, 0, radiansToDegrees(Math.PI/4))); |
| canvas.concat(new DOMMatrix().rotateAxisAngle(0, 0, 1, radiansToDegrees(Math.PI/16))); |
| canvas.concat(new DOMMatrix().translate(-CANVAS_WIDTH/2, 0, 0)); |
| |
| const localMatrix = canvas.getLocalToDevice(); |
| expect4x4MatricesToMatch([ |
| 0.693519, -0.137949, 0.707106, 91.944030, |
| 0.698150, 0.370924, -0.612372, -209.445297, |
| -0.177806, 0.918359, 0.353553, 53.342029, |
| 0 , 0 , 0 , 1 ], localMatrix); |
| |
| // Draw some stripes to help the eye detect the turn |
| const stripeWidth = 10; |
| paint.setColor(CanvasKit.BLACK); |
| for (let i = 0; i < CANVAS_WIDTH; i += 2*stripeWidth) { |
| canvas.drawRect(CanvasKit.LTRBRect(i, 0, i + stripeWidth, CANVAS_HEIGHT), paint); |
| } |
| |
| paint.setColor(CanvasKit.YELLOW); |
| canvas.drawPath(path, paint); |
| paint.delete(); |
| path.delete(); |
| }); |
| }); // end describe('DOMMatrix support') |
| |
| it('can call subarray on a Malloced object', () => { |
| const mThings = CanvasKit.Malloc(Float32Array, 6); |
| mThings.toTypedArray().set([4, 5, 6, 7, 8, 9]); |
| expectTypedArraysToEqual(Float32Array.of(4, 5, 6, 7, 8, 9), mThings.toTypedArray()); |
| expectTypedArraysToEqual(Float32Array.of(4, 5, 6, 7, 8, 9), mThings.subarray(0)); |
| expectTypedArraysToEqual(Float32Array.of(7, 8, 9), mThings.subarray(3)); |
| expectTypedArraysToEqual(Float32Array.of(7), mThings.subarray(3, 4)); |
| expectTypedArraysToEqual(Float32Array.of(7, 8), mThings.subarray(3, 5)); |
| |
| // mutations on the subarray affect the entire array (because they are backed by the |
| // same memory) |
| mThings.subarray(3)[0] = 100.5; |
| expectTypedArraysToEqual(Float32Array.of(4, 5, 6, 100.5, 8, 9), mThings.toTypedArray()); |
| CanvasKit.Free(mThings); |
| }); |
| |
| function expectTypedArraysToEqual(expected, actual) { |
| expect(expected.constructor.name).toEqual(actual.constructor.name); |
| expect(expected.length).toEqual(actual.length); |
| for (let i = 0; i < expected.length; i++) { |
| expect(expected[i]).toBeCloseTo(actual[i], 5, `element ${i}`); |
| } |
| } |
| |
| it('can create a RasterDirectSurface', () => { |
| // Make enough space for a 5x5 8888 surface (4 bytes for R, G, B, A) |
| const rdsData = CanvasKit.Malloc(Uint8Array, 5 * 5 * 4); |
| const surface = CanvasKit.MakeRasterDirectSurface({ |
| 'width': 5, |
| 'height': 5, |
| 'colorType': CanvasKit.ColorType.RGBA_8888, |
| 'alphaType': CanvasKit.AlphaType.Premul, |
| 'colorSpace': CanvasKit.ColorSpace.SRGB, |
| }, rdsData, 5 * 4); |
| |
| surface.getCanvas().clear(CanvasKit.Color(200, 100, 0, 0.8)); |
| const pixels = rdsData.toTypedArray(); |
| // Check that the first pixels colors are right. |
| expect(pixels[0]).toEqual(160); // red (premul, 0.8 * 200) |
| expect(pixels[1]).toEqual(80); // green (premul, 0.8 * 100) |
| expect(pixels[2]).toEqual(0); // blue (premul, not that it matters) |
| expect(pixels[3]).toEqual(204); // alpha (0.8 * 255) |
| surface.delete(); |
| CanvasKit.Free(rdsData); |
| }); |
| |
| gm('makeImageFromTextureSource_TypedArray', (canvas, _, surface) => { |
| if (!CanvasKit.gpu) { |
| return; |
| } |
| // This creates and draws an Image that is 1 pixel wide, 4 pixels tall with |
| // the colors listed below. |
| const pixels = Uint8Array.from([ |
| 255, 0, 0, 255, // opaque red |
| 0, 255, 0, 255, // opaque green |
| 0, 0, 255, 255, // opaque blue |
| 255, 0, 255, 100, // transparent purple |
| ]); |
| const img = surface.makeImageFromTextureSource(pixels, 1, 4); |
| canvas.drawImage(img, 1, 1, null); |
| |
| const info = img.getImageInfo(); |
| expect(info).toEqual({ |
| 'width': 1, |
| 'height': 4, |
| 'alphaType': CanvasKit.AlphaType.Unpremul, |
| 'colorType': CanvasKit.ColorType.RGBA_8888, |
| }); |
| const cs = img.getColorSpace(); |
| expect(CanvasKit.ColorSpace.Equals(cs, CanvasKit.ColorSpace.SRGB)).toBeTruthy(); |
| |
| cs.delete(); |
| img.delete(); |
| }); |
| |
| gm('makeImageFromTextureSource_imgElement', (canvas, _, surface) => { |
| if (!CanvasKit.gpu) { |
| return; |
| } |
| // This makes an offscreen <img> with the provided source. |
| const imageEle = new Image(); |
| imageEle.src = '/assets/mandrill_512.png'; |
| |
| // We need to wait until the image is loaded before the texture can use it. For good |
| // measure, we also wait for it to be decoded. |
| return imageEle.decode().then(() => { |
| const img = surface.makeImageFromTextureSource(imageEle); |
| canvas.drawImage(img, 0, 0, null); |
| |
| const info = img.getImageInfo(); |
| expect(info).toEqual({ |
| 'width': 512, // width and height should be derived from the image. |
| 'height': 512, |
| 'alphaType': CanvasKit.AlphaType.Unpremul, |
| 'colorType': CanvasKit.ColorType.RGBA_8888, |
| }); |
| img.delete(); |
| }); |
| }); |
| }); |
