List of usage examples for com.google.gwt.canvas.dom.client Context2d putImageData
public final native void putImageData(ImageData imagedata, double x, double y) ;
From source file:anagram.client.Lens.java
License:Apache License
public void draw(Context2d back, Context2d front) { front.drawImage(back.getCanvas(), 0, 0); if (!GWT.isScript()) { // in devmode this effect is slow so we disable it here } else {/* w w w . j a v a 2s .com*/ ImageData frontData = front.getImageData((int) (pos.x - radius), (int) (pos.y - radius), 2 * radius, 2 * radius); CanvasPixelArray frontPixels = frontData.getData(); ImageData backData = back.getImageData((int) (pos.x - radius), (int) (pos.y - radius), 2 * radius, 2 * radius); CanvasPixelArray backPixels = backData.getData(); int srcIdx, dstIdx; for (int i = lensArray.length - 1; i >= 0; i--) { dstIdx = 4 * lensArray[i][0]; srcIdx = 4 * lensArray[i][1]; frontPixels.set(dstIdx + 0, backPixels.get(srcIdx + 0)); frontPixels.set(dstIdx + 1, backPixels.get(srcIdx + 1)); frontPixels.set(dstIdx + 2, backPixels.get(srcIdx + 2)); } front.putImageData(frontData, (int) (pos.x - radius), (int) (pos.y - radius)); } front.setStrokeStyle(strokeStyle); front.beginPath(); front.arc(pos.x, pos.y, radius, 0, Math.PI * 2, true); front.closePath(); front.stroke(); }
From source file:com.google.gwt.sample.userwatcher.client.FileUploaderWidget_v2.java
private void drawThumbToScreen(Image image) { int size = 75; int width = image.getWidth(); int height = image.getHeight(); double scaleToRatio = 0.50D; // TODO oops, getting image loading problem. event loading, fix later... ImageData imageDataForThumb = ImageUtils.scaleImage(image, scaleToRatio); // for debugging Canvas canvasTmp = Canvas.createIfSupported(); canvasTmp.setCoordinateSpaceHeight((int) imageDataForThumb.getHeight()); canvasTmp.setCoordinateSpaceWidth((int) imageDataForThumb.getWidth()); Context2d context = canvasTmp.getContext2d(); context.putImageData(imageDataForThumb, 0, 0); pThumb.add(canvasTmp);/*from w ww . j a v a 2 s. c o m*/ canvasTmp.addStyleName("test2"); }
From source file:com.google.gwt.sample.userwatcher.client.ImageUtils.java
/** * for debugging/*from www. j a v a 2 s . co m*/ * * @param imageData */ public static void addImageToScreen(ImageData imageData) { Canvas canvasTmp = Canvas.createIfSupported(); canvasTmp.setCoordinateSpaceHeight((int) imageData.getHeight() + 10); canvasTmp.setCoordinateSpaceWidth((int) imageData.getWidth() + 10); Context2d context = canvasTmp.getContext2d(); context.putImageData(imageData, 0, 0); //flexTable.setWidget(r, c, canvasTmp); RootPanel.get().add(canvasTmp); }
From source file:com.google.gwt.sample.userwatcher.client.ImageUtils.java
public static ImageData cropImage(ImageData imageData, double sx, double sy, double sw, double sh) { Canvas canvasTmp = Canvas.createIfSupported(); canvasTmp.setStyleName("mainCanvas"); Context2d context = canvasTmp.getContext2d(); canvasTmp.setCoordinateSpaceHeight((int) imageData.getHeight() + 10); canvasTmp.setCoordinateSpaceWidth((int) imageData.getWidth() + 10); // draw image to canvas context.putImageData(imageData, 0, 0); // get image data //imageData = context.getImageData(0, 0, imageData.getWidth(), imageData.getHeight()); ImageData newImageData = context.getImageData(sx, sy, sw, sh); return newImageData; }
From source file:com.googlecode.mgwt.image.client.ImageConverter.java
License:Apache License
public void convert(final ImageResource resource, String color, final ImageConverterCallback imageConverterCallback) { if (color == null) { throw new IllegalArgumentException(); }/*from w ww. j av a 2s.c o m*/ if (!color.startsWith("#")) { throw new IllegalArgumentException(); } color = maybeExpandColor(color); final int hexColor = Integer.parseInt(color.substring(1), 16); final int red = hexColor >> 16 & 0xFF; final int green = hexColor >> 8 & 0xFF; final int blue = hexColor & 0xFF; final int height = resource.getHeight(); final int width = resource.getWidth(); loadImage(resource.getSafeUri().asString(), width, height, new LoadImageCallback() { @Override public void onSuccess(ImageElement imageElement) { Canvas canvas = Canvas.createIfSupported(); canvas.getElement().setPropertyInt("height", height); canvas.getElement().setPropertyInt("width", width); Context2d context = canvas.getContext2d(); context.drawImage(imageElement, 0, 0); ImageData imageData = context.getImageData(0, 0, width, height); CanvasPixelArray canvasPixelArray = imageData.getData(); for (int i = 0; i < canvasPixelArray.getLength(); i += 4) { canvasPixelArray.set(i, red); canvasPixelArray.set(i + 1, green); canvasPixelArray.set(i + 2, blue); canvasPixelArray.set(i + 3, canvasPixelArray.get(i + 3)); } context.putImageData(imageData, 0, 0); imageConverterCallback.onSuccess(new ConvertedImageResource(canvas.toDataUrl("image/png"), resource.getWidth(), resource.getHeight())); } }); }
From source file:com.lizardtech.djvu.GBitmap.java
License:Open Source License
@Override public void putData(Context2d target) { target.putImageData(imageData, -border, 0); }
From source file:com.lizardtech.djvu.GPixmap.java
License:Open Source License
@Override public void putData(Context2d target) { target.putImageData(imageData, 0, 0); }
From source file:net.npe.gwt.canvas.CanvasCreator.java
License:MIT License
public static Canvas createImageCanvas(int[] pixels, int width, int height) { Canvas canvas = Canvas.createIfSupported(); if (canvas == null) return null; canvas.setCoordinateSpaceWidth(width); canvas.setCoordinateSpaceHeight(height); Context2d context = canvas.getContext2d(); ImageData data = context.createImageData(width, height); CanvasPixelArray array = data.getData(); for (int i = 0; i < width * height; i++) { // ABGR array.set(4 * i + 0, pixels[i] & 0xFF); array.set(4 * i + 1, (pixels[i] >> 8) & 0xFF); array.set(4 * i + 2, (pixels[i] >> 16) & 0xFF); array.set(4 * i + 3, (pixels[i] >> 24) & 0xFF); }/*from w ww. j av a 2 s .c o m*/ context.putImageData(data, 0, 0); return canvas; }
From source file:net.npe.image.util.gwt.GwtImageReader.java
License:MIT License
public static Canvas createCanvas(int[] pixels, int width, int height) { Canvas canvas = Canvas.createIfSupported(); if (canvas == null) return null; canvas.setCoordinateSpaceWidth(width); canvas.setCoordinateSpaceHeight(height); Context2d context = canvas.getContext2d(); ImageData data = context.createImageData(width, height); CanvasPixelArray array = data.getData(); for (int i = 0; i < width * height; i++) { // ABGR array.set(4 * i + 0, pixels[i] & 0xFF); array.set(4 * i + 1, (pixels[i] >> 8) & 0xFF); array.set(4 * i + 2, (pixels[i] >> 16) & 0xFF); array.set(4 * i + 3, (pixels[i] >> 24) & 0xFF); }//from w w w . j a v a2s . c o m context.putImageData(data, 0, 0); return canvas; }
From source file:org.catrobat.html5player.client.Scene.java
License:Open Source License
/** * * @param imageElement/*from ww w . ja va 2 s .co m*/ * @param brightness * @return Canvas canvas with the adjusted image */ private Canvas adjustImageBrightness(ImageElement imageElement, double brightness) { int width = imageElement.getWidth(); int height = imageElement.getHeight(); Canvas temp = Canvas.createIfSupported(); temp.setCoordinateSpaceWidth(width); temp.setCoordinateSpaceHeight(height); Context2d context = temp.getContext2d(); context.drawImage(imageElement, 0, 0); ImageData imageData = context.getImageData(0, 0, width, height); CanvasPixelArray pixelsData = imageData.getData(); int index = 0; System.out.println(pixelsData.getLength()); int brightnessAdj = (int) (255d * brightness) - 255; if (brightnessAdj != 0) { while (index < pixelsData.getLength()) { if ((index + 1) % 4 != 0) { int r = checkColorRange(pixelsData.get(index) + brightnessAdj); //red channel pixelsData.set(index, r); int g = checkColorRange(pixelsData.get(++index) + brightnessAdj); //green channel pixelsData.set(index, g); int b = checkColorRange(pixelsData.get(++index) + brightnessAdj); //blue channel pixelsData.set(index, b); index++; //alpha channel } index++; } } context.putImageData(imageData, 0, 0); return temp; }