[news.eclipse.platform.swt] Re: SWT and JAI?

[Yuri Magrisso <yumariso@xxxxxxxxxxx>]

Roland wrote:
> Would a workaround me to hold the data in JAI objects but pass them to
> SWT.Image objects which can then be displayed in an SWT.shell?
You can check http://www.holongate.org
Here is a snippet for converting a AWT image to SWT image:

import java.awt.image.BufferedImage;
import java.awt.image.DataBufferInt;
import java.io.FileInputStream;

import org.eclipse.swt.*;
import org.eclipse.swt.events.*;
import org.eclipse.swt.graphics.*;
import org.eclipse.swt.layout.*;
import org.eclipse.swt.widgets.*;

import com.sun.image.codec.jpeg.JPEGCodec;

/**
 *
 */
public class Awt2Swt {

	public static void main(String[] args) {
		try {
			if ( args.length < 1 ) {
				System.out.println("You must specify image path.");
				return;
			}
			String file = args[0];
			BufferedImage image = JPEGCodec.createJPEGDecoder(
						new FileInputStream(file)).decodeAsBufferedImage();
						
			Rectangle region = new Rectangle(0, 0, image.getWidth(), 
image.getHeight());
			PaletteData palette = new PaletteData(0x00FF0000, 0x0000FF00, 
0x000000FF);
			
			int[] data = ((DataBufferInt) image.getData().getDataBuffer()).getData();
			ImageData imageData = new ImageData(region.width, region.height, 32, 
palette);
			imageData.setPixels(0, 0, data.length, data, 0);
			
			Display display = new Display ();
			final Image swtImage = new Image (display, imageData);
			
			Color color = display.getSystemColor (SWT.COLOR_RED);
				
			color.dispose ();

			Shell shell = new Shell (display);
			shell.setLayout (new FillLayout ());
			shell.setBounds(region);
			Group group = new Group (shell, SWT.NONE);
			group.setLayout (new FillLayout ());
			group.setText ("A Photo");
			//group.setSize(region.width, region.height);
			Canvas canvas = new Canvas (group, SWT.NONE);
			canvas.addPaintListener (new PaintListener () {
				public void paintControl (PaintEvent e) {
					e.gc.drawImage(swtImage, 0, 0);
				}
			});
			
			shell.open ();
			while (!shell.isDisposed ()) {
				if (!display.readAndDispatch ())
					display.sleep ();
			}
			swtImage.dispose ();
			display.dispose ();
			
			
		}
		catch ( Exception e ) {
			System.out.println("Exception: " e.getMessage());
		}
	}
}