Mega Code Archive
Palettes
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/*******************************************************************************
* All Right Reserved. Copyright (c) 1998, 2004 Jackwind Li Guojie
*
* Created on 2004-4-21 20:12:55 by JACK $Id$
*
******************************************************************************/
import org.eclipse.swt.SWT;
import org.eclipse.swt.events.PaintEvent;
import org.eclipse.swt.events.PaintListener;
import org.eclipse.swt.graphics.Image;
import org.eclipse.swt.graphics.ImageData;
import org.eclipse.swt.graphics.PaletteData;
import org.eclipse.swt.graphics.RGB;
import org.eclipse.swt.layout.FillLayout;
import org.eclipse.swt.widgets.Canvas;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Shell;
public class Palettes {
Display display = new Display();
Shell shell = new Shell(display);
public Palettes() {
shell.setLayout(new FillLayout());
PaletteData paletteData = new PaletteData(0xFF0000, 0x00FF00, 0x0000FF);
ImageData imageData = new ImageData(100, 100, 24, paletteData);
for (int i = 0; i < 100; i++) { // each column.
for (int j = 0; j < 100; j++) { // each row.
if (j < 30 || (i > 35 && i < 65))
imageData.setPixel(i, j, 0xFF);
else
imageData.setPixel(i, j, 0xFFFF00);
}
}
// int pixelValue = imageData.getPixel(50, 50);
// int redComponent = pixelValue & imageData.palette.redMask;
// int greenComponent = pixelValue & imageData.palette.greenMask;
// int blueComponent = pixelValue & imageData.palette.blueMask;
PaletteData paletteData2 =
new PaletteData(new RGB[] { new RGB(0, 0, 255), // blue
new RGB(255, 255, 0) // yellow
});
ImageData imageData2 = new ImageData(100, 100, 1, paletteData2);
for (int i = 0; i < 100; i++) { // each column.
for (int j = 0; j < 100; j++) { // each row.
if (j < 30 || (i > 35 && i < 65))
imageData2.setPixel(i, j, 0);
else
imageData2.setPixel(i, j, 1);
}
}
System.out.println(imageData.palette.getRGB(imageData.getPixel(50, 50)));
final Image image2 = new Image(display, imageData2);
final Image image = new Image(display, imageData);
final Canvas canvas = new Canvas(shell, SWT.NULL);
canvas.setBackground(display.getSystemColor(SWT.COLOR_WHITE));
canvas.addPaintListener(new PaintListener() {
public void paintControl(PaintEvent e) {
e.gc.drawImage(image2, 0, 0);
}
});
shell.pack();
shell.open();
//textUser.forceFocus();
// Set up the event loop.
while (!shell.isDisposed()) {
if (!display.readAndDispatch()) {
// If no more entries in event queue
display.sleep();
}
}
display.dispose();
}
private void init() {
}
public static void main(String[] args) {
new Palettes();
}
}
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