|
/*
* GC example snippet: create an icon (in memory)
*
* For a list of all SWT example snippets see
* http://dev.eclipse.org/viewcvs/index.cgi/%7Echeckout%7E/platform-swt-home/dev.html#snippets
*/
import org.eclipse.swt.SWT;
import org.eclipse.swt.graphics.Color;
import org.eclipse.swt.graphics.GC;
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.widgets.Button;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Shell;
public class Snippet70 {
public static void main(String[] args) {
Display display = new Display();
Color red = display.getSystemColor(SWT.COLOR_RED);
Color white = display.getSystemColor(SWT.COLOR_WHITE);
Color black = display.getSystemColor(SWT.COLOR_BLACK);
Image image = new Image(display, 20, 20);
GC gc = new GC(image);
gc.setBackground(red);
gc.fillRectangle(5, 5, 10, 10);
gc.dispose();
ImageData imageData = image.getImageData();
PaletteData palette = new PaletteData(new RGB[] { new RGB(0, 0, 0),
new RGB(0xFF, 0xFF, 0xFF), });
ImageData maskData = new ImageData(20, 20, 1, palette);
Image mask = new Image(display, maskData);
gc = new GC(mask);
gc.setBackground(black);
gc.fillRectangle(0, 0, 20, 20);
gc.setBackground(white);
gc.fillRectangle(5, 5, 10, 10);
gc.dispose();
maskData = mask.getImageData();
Image icon = new Image(display, imageData, maskData);
Shell shell = new Shell(display);
Button button = new Button(shell, SWT.PUSH);
button.setImage(icon);
button.setSize(60, 60);
shell.open();
while (!shell.isDisposed()) {
if (!display.readAndDispatch())
display.sleep();
}
icon.dispose();
image.dispose();
mask.dispose();
display.dispose();
}
}
|
