Loading ImageView with in-memory bitmap

Question

I am new to JavaFX, and I have search all over the internet but I cannot find the answer.
My Java code is creating an in-memory bitmap image and I would like to display it in JavaFX ImageView class (without saving it to a file). ImageView can load an image from a URL, but how do I do that from a member variable in a Java class?
As an alternative, I tried to subclass SwingComponent (instead of using ImageView) and have the java.awt.Image member variable in this class. I can bind to this member variable, but now I am stuck, since I cannot get JavaFX to invoke my paintComponent repaint routine. If I could then I can use graphics drawImage in this routine.
Also, Timeline, while it is cool, does not apply to my solution since the image is generated at various times based on system events.
Which is the best approach?
Any help would be appreciated.
- Tosh

Answer 1

Thank you for your answer. I also found it difficult to convert the int[] of the image to BufferedImage. I did manage to cobble together some code that does this, although, I think it is inefficient. Anyway, I am glad that I have some working code now. As an aid to others I am placing my routine to convert int array to BufferedImage. If anyone has a more efficient way, please add to this trail.
BufferedImage bimg = null;
public BufferedImage intArraytoImage(int[] buf, int w, int h) {
int[] BM = new int[]{0xff0000, 0xff00, 0xff}; // I don't have alpha channel... {0xff0000, 0xff00, 0xff, 0xff000000};
SinglePixelPackedSampleModel sm = new SinglePixelPackedSampleModel(DataBuffer.TYPE_INT, w, h, BM);
DataBufferInt db = new DataBufferInt(buf, w * h, 0);
Point p = new Point(0, 0);
WritableRaster raster = null;
try {
raster = Raster.createWritableRaster(sm, db, p);
ColorSpace cs = ColorSpace.getInstance(ColorSpace.CS_GRAY);
int[] nBits = {24};
ColorModel cm = new ComponentColorModel(cs, nBits, false, true, Transparency.OPAQUE, DataBuffer.TYPE_BYTE);
bimg = new BufferedImage(w, h, 1); // 1 = TYPE_INT_RGB
bimg.setData(raster);
} catch (Exception e) {
System.out.println("exception in creating BufferedImage");
     e.printStackTrace();
return bimg;
- Tosh
fixed typo