本文整理汇总了Java中com.google.gwt.canvas.dom.client.CanvasPixelArray类的典型用法代码示例。如果您正苦于以下问题：Java CanvasPixelArray类的具体用法？Java CanvasPixelArray怎么用？Java CanvasPixelArray使用的例子？那么恭喜您, 这里精选的类代码示例或许可以为您提供帮助。
CanvasPixelArray类属于com.google.gwt.canvas.dom.client包，在下文中一共展示了CanvasPixelArray类的5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.CanvasPixelArray; //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;
}
示例2: createImageCanvas
import com.google.gwt.canvas.dom.client.CanvasPixelArray; //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;
}
示例3: createImageCanvas
import com.google.gwt.canvas.dom.client.CanvasPixelArray; //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;
}
示例4: setRgb
import com.google.gwt.canvas.dom.client.CanvasPixelArray; //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);
}
示例5: before
import com.google.gwt.canvas.dom.client.CanvasPixelArray; //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);
}