public static BufferedImage convertImageData(ImageData data) {
BufferedImage bimg = null;
int height = data.getHeight(), width = data.getWidth();
Object pixels = data.getData();
if (pixels instanceof int[] && data.getElementWidth() == 1) {
int[] arr = (int[]) pixels;
byte[] barray = new byte[arr.length * 3];
int k = 0;
for (int j = 0; j < arr.length; j++) {
int l = arr[j];
barray[k++] = (byte) (l & 0xFF);
barray[k++] = (byte) ((l >>> 8) & 0xFF);
barray[k++] = (byte) ((l >>> 16) & 0xFF);
}
ColorModel ccm =
new ComponentColorModel(
ICC_ColorSpace.getInstance(ICC_ColorSpace.CS_sRGB),
new int[] {8, 8, 8},
false,
false,
Transparency.OPAQUE,
DataBuffer.TYPE_BYTE);
DataBuffer bbuf = new DataBufferByte(barray, barray.length);
SampleModel bmodel =
new PixelInterleavedSampleModel(
DataBuffer.TYPE_BYTE, width, height, 3, 3 * width, new int[] {2, 1, 0});
WritableRaster raster = Raster.createWritableRaster(bmodel, bbuf, new Point(0, 0));
bimg = new BufferedImage(ccm, raster, false, new Hashtable());
} else if (pixels instanceof byte[]
&& data.getElementWidth() == 1) { // Assume gray scale model?
byte[] arr = (byte[]) pixels;
byte[] barray = new byte[arr.length * 3];
int k = 0;
for (int j = 0; j < arr.length; j++) {
byte l = arr[j];
barray[k++] = l;
barray[k++] = l;
barray[k++] = l;
}
ColorModel ccm =
new ComponentColorModel(
ICC_ColorSpace.getInstance(ICC_ColorSpace.CS_sRGB),
new int[] {8, 8, 8},
false,
false,
Transparency.OPAQUE,
DataBuffer.TYPE_BYTE);
DataBuffer bbuf = new DataBufferByte(barray, barray.length);
SampleModel bmodel =
new PixelInterleavedSampleModel(
DataBuffer.TYPE_BYTE, width, height, 3, 3 * width, new int[] {2, 1, 0});
WritableRaster raster = Raster.createWritableRaster(bmodel, bbuf, new Point(0, 0));
bimg = new BufferedImage(ccm, raster, false, new Hashtable());
} else {
throw new RuntimeException("Unexpected data.");
}
return bimg;
}
/**
* Creates an immutable image from a source mutable image.
*
* <p>This method is useful for placing the contents of mutable images into <code>Choice</code>
* objects. The application can create an off-screen image using the {@link #createImage(int, int)
* createImage(w, h)} method, draw into it using a <code>Graphics</code> object obtained with the
* {@link #getGraphics() getGraphics()} method, and then create an immutable copy of it with this
* method. The immutable copy may then be placed into <code>Choice</code> objects.
*
* @param mutableSource the source mutable image to be copied
* @return the new immutable image
*/
public ImageData createImmutableCopy(ImageData mutableSource) {
ImageData data = new ImageData(mutableSource.getWidth(), mutableSource.getHeight(), false);
// Duplicate mutable image contents
try {
createImmutableImageDataCopy(data, mutableSource);
} catch (OutOfMemoryError e) {
garbageCollectImages(false);
try {
createImmutableImageDataCopy(data, mutableSource);
} catch (OutOfMemoryError e2) {
garbageCollectImages(true);
createImmutableImageDataCopy(data, mutableSource);
}
}
return data;
}
