当前位置: 首页>>代码示例>>Java>>正文

Java ImageData类代码示例

本文整理汇总了Java中com.google.gwt.canvas.dom.client.ImageData类的典型用法代码示例。如果您正苦于以下问题：Java ImageData类的具体用法？Java ImageData怎么用？Java ImageData使用的例子？那么, 这里精选的类代码示例或许可以为您提供帮助。


ImageData类属于com.google.gwt.canvas.dom.client包，在下文中一共展示了ImageData类的15个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的Java代码示例。

示例1: createCanvas

import com.google.gwt.canvas.dom.client.ImageData; //导入依赖的package包/类
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);
	}
	context.putImageData(data, 0, 0);
	
	return canvas;
	
}
开发者ID:npedotnet，项目名称:npe-image-library，代码行数:25，代码来源:GwtImageReader.java

示例2: createImageCanvas

import com.google.gwt.canvas.dom.client.ImageData; //导入依赖的package包/类
Canvas createImageCanvas(int [] pixels, int width, int height) {

	    Canvas canvas = Canvas.createIfSupported();
	    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++) {
	        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);
	    }
	    context.putImageData(data, 0, 0);

	    return canvas;

	}
开发者ID:npedotnet，项目名称:TGAReader，代码行数:22，代码来源:TexturedCube.java

示例3: createImageCanvas

import com.google.gwt.canvas.dom.client.ImageData; //导入依赖的package包/类
private Canvas createImageCanvas(int [] pixels, int width, int height) {
	
	Canvas canvas = Canvas.createIfSupported();
	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);
	}
	context.putImageData(data, 0, 0);
	
	canvas.getElement().getStyle().setMargin(4, Unit.PX);
	
	return canvas;
	
}
开发者ID:npedotnet，项目名称:TGAReader，代码行数:24，代码来源:ImageCanvasTest.java

示例4: setRgb

import com.google.gwt.canvas.dom.client.ImageData; //导入依赖的package包/类
@Override public void setRgb(int startX, int startY, int width, int height,
                             int[] rgbArray, int offset, int scanSize) {
  Context2d ctx = canvas.getContext2d();
  ImageData imageData = ctx.createImageData(width, height);
  CanvasPixelArray pixelData = imageData.getData();
  int i = 0;
  int dst = offset;
  for (int y = 0; y < height; y++) {
    for (int x = 0; x < width; x ++) {
      int argb = rgbArray[dst + x];
      pixelData.set(i++, (argb >> 16) & 255);
      pixelData.set(i++, (argb >> 8) & 255);
      pixelData.set(i++, (argb) & 255);
      pixelData.set(i++, (argb >> 24) & 255);
    }
    dst += scanSize;
  }
  ctx.putImageData(imageData, startX, startY);
}
开发者ID:playn，项目名称:playn，代码行数:20，代码来源:HtmlImage.java

示例5: doPick

import com.google.gwt.canvas.dom.client.ImageData; //导入依赖的package包/类
private void doPick(int cx, int cy) {
	cx/=currentScale;
	cy/=currentScale;
	
	//LogUtils.log(cx+","+cy);
	ImageData data=canvas.getContext2d().getImageData(cx, cy, 1, 1);
	int r=data.getRedAt(0, 0);
	int g=data.getGreenAt(0, 0);
	int b=data.getBlueAt(0, 0);
	//LogUtils.log(r+","+g+","+b);
	String hex=ColorUtils.toCssColor(r,g,b);
	
	//LogUtils.log(hex);
	colorPicker.setValue(hex);
	
	if(backgroundList.getSelectedIndex()==3){//
		updateBgStyle();
	}
}
开发者ID:akjava，项目名称:gwthtml5apps，代码行数:20，代码来源:TransparentIt.java

示例6: createMaskBySimilarColor

import com.google.gwt.canvas.dom.client.ImageData; //导入依赖的package包/类
/**
 * 
 * @param data
 * @param r
 * @param g
 * @param b
 * @param maxLength
 * @return imageData-width x imageData-height length (if similar value is 1,or 0)
 */
public static Uint8Array createMaskBySimilarColor(ImageData data,int r,int g,int b,int maxLength){
	Uint8Array bytes=Uint8Array.createUint8(data.getWidth()*data.getHeight());
	for(int y=0;y<data.getHeight();y++){
		for(int x=0;x<data.getWidth();x++){
			int imgR=data.getRedAt(x, y);
			int imgG=data.getGreenAt(x, y);
			int imgB=data.getBlueAt(x, y);
			
			double length=ColorUtils.getColorLength(r, g, b, imgR, imgG, imgB);
			if(length<maxLength){
				bytes.set(y*data.getWidth()+x, 1);
			}
		}
	}
	return bytes;
}
开发者ID:akjava，项目名称:gwthtml5apps，代码行数:26，代码来源:TransparentIt.java

示例7: createMaskByColor

import com.google.gwt.canvas.dom.client.ImageData; //导入依赖的package包/类
public static Uint8Array createMaskByColor(ImageData data,int r,int g,int b,boolean setSameColorCase){
	Uint8Array bytes=Uint8Array.createUint8(data.getWidth()*data.getHeight());
	for(int y=0;y<data.getHeight();y++){
		for(int x=0;x<data.getWidth();x++){
			int imgR=data.getRedAt(x, y);
			int imgG=data.getGreenAt(x, y);
			int imgB=data.getBlueAt(x, y);
			if(r==imgR && g==imgG&&b==imgB){
				if(setSameColorCase){
				bytes.set(y*data.getWidth()+x, 1);
				}
			}else{
				if(!setSameColorCase){
				bytes.set(y*data.getWidth()+x, 1);
				}
			}
		}
	}
	return bytes;
}
开发者ID:akjava，项目名称:gwthtml5apps，代码行数:21，代码来源:TransparentIt.java

示例8: doRepreview

import com.google.gwt.canvas.dom.client.ImageData; //导入依赖的package包/类
protected void doRepreview() {
	LogUtils.log("doRepreview1");
	int margin=InpaintEngine.INPAINT_MARGIN;
	if(maskImageElement==null){
		 Window.alert("no mask element");
		 return;
	}
	LogUtils.log("doRepreview1");
	ImageElementUtils.copytoCanvasWithMargin(maskImageElement, sharedCanvas,true,margin,true);
	
	Canvas grayscale=CanvasUtils.convertToGrayScale(sharedCanvas, null);
	CanvasUtils.copyTo(grayscale, sharedCanvas);
	
	
	ImageData maskData=CanvasUtils.getImageData(sharedCanvas);
	
	greyScaleMaskPanel.clear();
	
	addToPanel(greyScaleMaskPanel,maskData);
	
	mainTab.selectTab(1);
	LogUtils.log("doRepreview4");
	//CanvasUtils.copyTo(maskData,sharedCanvas);
	//String dataUrl=sharedCanvas.toDataUrl();
	//listener.createGreyScaleMaks(maskData);
}
开发者ID:akjava，项目名称:gwthtml5apps，代码行数:27，代码来源:Inpaint.java

示例9: sourceInImageData

import com.google.gwt.canvas.dom.client.ImageData; //导入依赖的package包/类
/**
 * draw only not-alpha on maskdata
 * @param imageData
 * @param maskData
 * @return
 */
public static ImageData sourceInImageData(ImageData imageData,ImageData maskData){
	//check & warn
	Canvas imageCanvas=CanvasUtils.copyTo(imageData, null);
	Canvas maskCanvas=CanvasUtils.copyTo(maskData, null);
	
	Canvas canvas=CanvasUtils.copyToSizeOnly(imageCanvas, null);
	canvas.getContext2d().drawImage(maskCanvas.getCanvasElement(), 0, 0);

	canvas.getContext2d().setGlobalCompositeOperation(Composite.SOURCE_IN);
	canvas.getContext2d().drawImage(imageCanvas.getCanvasElement(),0,0);
	
	imageCanvas=null;
	maskCanvas=null;
	
	ImageData data=ImageDataUtils.copyFrom(canvas);
	canvas=null;
	return data;
}
开发者ID:akjava，项目名称:gwthtml5apps，代码行数:25，代码来源:PoissonImage.java

示例10: generateImage

import com.google.gwt.canvas.dom.client.ImageData; //导入依赖的package包/类
protected void generateImage() {
	int clipSX=(canvasWidth-imageWidth)/2;
	int clipSY=(canvasHeight-imageHeight)/2;
	int clipEX=clipSX+imageWidth;
	int clipEY=clipSY+imageHeight;
	
	ImageData data=canvas.getContext2d().getImageData(clipSX, clipSY, clipEX-clipSX, clipEY-clipSY);
	CanvasUtils.createCanvas(drawCanvas, data);
	
	String type=typeBox.getValue();
	String dataUrl=drawCanvas.toDataUrl("image/"+type);
	
	String extension=type.equals("jpeg")?"jpg":type;
	String name=titleBox.getText().isEmpty()?"logo":titleBox.getText();
	
	
	Anchor anchor=HTML5Download.get().generateBase64DownloadLink(dataUrl, "image/"+type, name+"."+extension, textConstants.Download(), true);
	anchor.setStylePrimaryName("bt");
	downloadArea.clear();
	downloadArea.add(anchor);
}
开发者ID:akjava，项目名称:gwthtml5apps，代码行数:22，代码来源:SimpleLogo.java

示例11: jsLoadedCallback

import com.google.gwt.canvas.dom.client.ImageData; //导入依赖的package包/类
private static void jsLoadedCallback(ImageData pixels, int width, int height, int oWidth, int oHeight,
                                     UniCallback<Image> onComplete)
{
    Image image = new Image(width, height, oWidth, oHeight);

    for (int x = 0; x < width; x++)
    {
        for (int y = 0; y < height; y++)
            image.setPixel(x, y, new Color(
                    pixels.getRedAt(x, y) / 255f,
                    pixels.getGreenAt(x, y) / 255f,
                    pixels.getBlueAt(x, y) / 255f,
                    pixels.getAlphaAt(x, y) / 255f
            ));
    }

    onComplete.invoke(image);
}
开发者ID:sriharshachilakapati，项目名称:SilenceEngine，代码行数:19，代码来源:GwtImageReader.java

示例12: measureHeight

import com.google.gwt.canvas.dom.client.ImageData; //导入依赖的package包/类
private static int measureHeight(Font font, String text) {
  Canvas canvas = canvas();
  Context2d ctx = canvas.getContext2d();

  ctx.setFont(getFontString(font));
  ctx.setFillStyle("rgb(255, 0, 0)");

  int width = (int) ctx.measureText(text).getWidth();
  int canvasHeight = font.getSize() * 2;
  canvas.setHeight(canvasHeight + "px");
  canvas.setHeight(font.getSize() * 2 + "px");
  canvas.setWidth(width + "px");

  ctx.fillText(text, 0, font.getSize());
  ImageData data = ctx.getImageData(0, 0, width, canvasHeight);
  int firstY = canvasHeight - 1;
  int lastY = 0;
  for (int x = 0; x < width; x++) {
    for (int y = 0; y < canvasHeight; y++) {
      int red = data.getRedAt(x, y);
      if (red != 0) {
        if (firstY > y) {
          firstY = y;
        }
        if (lastY < y) {
          lastY = y;
        }
      }
    }
  }
  return lastY - firstY;
}
开发者ID:JetBrains，项目名称:jetpad-projectional-open-source，代码行数:33，代码来源:TextMetricsCalculator.java

示例13: setUp

import com.google.gwt.canvas.dom.client.ImageData; //导入依赖的package包/类
@Before
public void setUp() throws Exception {
    userAgentUtil = Mockito.mock(UserAgentUtil.class);
    canvasImageDataProvider = new CanvasImageDataProvider(userAgentUtil);

    Canvas canvas = Mockito.mock(Canvas.class);
    when(canvasStubView.getCanvas()).thenReturn(canvas);

    Context2d context = Mockito.mock(Context2d.class);
    when(canvas.getContext2d()).thenReturn(context);

    ImageData imageData = Mockito.mock(ImageData.class);
    when(context.getImageData(0, 0, 0, 0)).thenReturn(imageData);
}
开发者ID:YoungDigitalPlanet，项目名称:empiria.player，代码行数:15，代码来源:CanvasImageDataProviderJUnitTest.java

示例14: before

import com.google.gwt.canvas.dom.client.ImageData; //导入依赖的package包/类
@Before
public void before() {
    Context2d context2d = mock(Context2d.class);
    imageData = mock(ImageData.class);
    pixelArray = mock(CanvasPixelArray.class);
    doReturn(PIXEL_VALUE).when(pixelArray)
            .get(anyInt());
    doReturn(pixelArray).when(imageData)
            .getData();
    doReturn(imageData).when(context2d)
            .getImageData(anyInt(), anyInt(), anyInt(), anyInt());
    instance = new CanvasImageData(context2d, WIDTH, HEIGHT);
}
开发者ID:YoungDigitalPlanet，项目名称:empiria.player，代码行数:14，代码来源:CanvasImageDataJUnitTest.java

示例15: setUp

import com.google.gwt.canvas.dom.client.ImageData; //导入依赖的package包/类
@Before
public void setUp() throws Exception {
    context = mock(Context2d.class);
    imageData = mock(ImageData.class);

    when(context.getImageData(0, 0, width, height)).thenReturn(imageData);

    imageDataSlower = new CanvasImageDataSlower(context, width, height);
}
开发者ID:YoungDigitalPlanet，项目名称:empiria.player，代码行数:10，代码来源:CanvasImageDataSlowerJUnitTest.java


注：本文中的com.google.gwt.canvas.dom.client.ImageData类示例由纯净天空整理自Github/MSDocs等开源代码及文档管理平台，相关代码片段筛选自各路编程大神贡献的开源项目，源码版权归原作者所有，传播和使用请参考对应项目的License；未经允许，请勿转载。