public Image fade(Image image, int alpha) {
ImageData imageData = image.getImageData();
byte[] aplhas = new byte[imageData.height * imageData.width];
for (int i = 0; i < aplhas.length; i++) {
aplhas[i] = (byte) alpha;
}
imageData.alphaData = aplhas;
return new Image(Display.getCurrent(), imageData);
}
private static Image takeScreenshot(final Display display, final Shell parent) {
/* Take the screen shot */
GC gc = new GC(parent);
Image image = new Image(display, parent.getClientArea());
gc.copyArea(image, 0, 0);
GC gcImage = new GC(image);
gcImage.setForeground(display.getSystemColor(SWT.COLOR_WHITE));
gcImage.setAdvanced(true);
Region region = parent.getRegion();
data = image.getImageData();
if (region != null) {
int height = image.getBounds().height;
int width = image.getBounds().width;
byte[] alphaData = new byte[height * width];
int currentPosition = 0;
for (int i = 0; i < height; i++) {
for (int j = 0; j < width; j++) {
if (!region.contains(j, i)) {
gcImage.drawPoint(j, i);
alphaData[currentPosition] = 0;
} else {
alphaData[currentPosition] = (byte) 255;
}
currentPosition++;
}
}
data.alphaData = alphaData;
}
image.dispose();
gcImage.dispose();
gc.dispose();
return new Image(display, data);
}
public ImageData image(BufferedImage image) {
if (image.getColorModel() instanceof DirectColorModel) {
DirectColorModel cmodel = (DirectColorModel) image.getColorModel();
PaletteData palette =
new PaletteData(cmodel.getRedMask(), cmodel.getGreenMask(), cmodel.getBlueMask());
ImageData data =
new ImageData(image.getWidth(), image.getHeight(), cmodel.getPixelSize(), palette);
for (int y = 0; y < data.height; y++) {
for (int x = 0; x < data.width; x++) {
int rgb = image.getRGB(x, y);
int pixel = palette.getPixel(new RGB((rgb >> 16) & 0xFF, (rgb >> 8) & 0xFF, rgb & 0xFF));
data.setPixel(x, y, pixel);
if (cmodel.hasAlpha()) data.setAlpha(x, y, (rgb >> 24) & 0xFF);
}
}
return data;
} else if (image.getColorModel() instanceof IndexColorModel) {
IndexColorModel cmodel = (IndexColorModel) image.getColorModel();
int size = cmodel.getMapSize();
byte[] reds = new byte[size];
byte[] greens = new byte[size];
byte[] blues = new byte[size];
cmodel.getReds(reds);
cmodel.getGreens(greens);
cmodel.getBlues(blues);
RGB[] rgbs = new RGB[size];
for (int ii = 0; ii < rgbs.length; ii++) {
rgbs[ii] = new RGB(reds[ii] & 0xFF, greens[ii] & 0xFF, blues[ii] & 0xFF);
}
PaletteData palette = new PaletteData(rgbs);
ImageData data =
new ImageData(image.getWidth(), image.getHeight(), cmodel.getPixelSize(), palette);
data.transparentPixel = cmodel.getTransparentPixel();
WritableRaster raster = image.getRaster();
int[] pixelArray = new int[1];
for (int y = 0; y < data.height; y++) {
for (int x = 0; x < data.width; x++) {
raster.getPixel(x, y, pixelArray);
data.setPixel(x, y, pixelArray[0]);
}
}
return data;
} else if (image.getColorModel() instanceof ComponentColorModel) {
ComponentColorModel cmodel = (ComponentColorModel) image.getColorModel();
PaletteData palette = new PaletteData(0x0000FF, 0x00FF00, 0xFF0000); // BGR
ImageData data = new ImageData(image.getWidth(), image.getHeight(), 24, palette);
if (cmodel.hasAlpha()) data.alphaData = new byte[image.getWidth() * image.getHeight()];
WritableRaster raster = image.getRaster();
int[] pixelArray = new int[4];
for (int y = 0; y < data.height; y++) {
for (int x = 0; x < data.width; x++) {
raster.getPixel(x, y, pixelArray);
data.setPixel(x, y, (pixelArray[2] << 16) | (pixelArray[1] << 8) | (pixelArray[0]));
if (data.alphaData != null) data.alphaData[y * data.width + x] = (byte) pixelArray[3];
}
}
return data;
}
return null;
}
