Mega Code Archive
Canvas example snippet
<![CDATA[
/******************************************************************************
* Copyright (c) 1998, 2004 Jackwind Li Guojie
* All right reserved.
*
* Created on Jan 24, 2004 3:03:14 PM by JACK
* $Id$
*
* visit: http://www.asprise.com/swt
*****************************************************************************/
/*
* Canvas example snippet: implement tab traversal (behave like a tab group)
*
* 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.GC;
import org.eclipse.swt.graphics.Image;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Shell;
public class CanvasExample {
public static void main(String[] args) {
Display display = new Display();
Image small = new Image(display, 16, 16);
GC gc = new GC(small);
gc.setBackground(display.getSystemColor(SWT.COLOR_RED));
gc.fillArc(0, 0, 16, 16, 45, 270);
gc.dispose();
Image large = new Image(display, 32, 32);
gc = new GC(large);
gc.setBackground(display.getSystemColor(SWT.COLOR_BLUE));
gc.fillArc(0, 0, 32, 32, 45, 270);
gc.dispose();
/* Provide different resolutions for icons to get
* high quality rendering wherever the OS needs
* large icons. For example, the ALT+TAB window
* on certain systems uses a larger icon.
*/
Shell shell = new Shell(display);
shell.setText("Small and Large icons");
shell.setImages(new Image[] {small, large});
/* No large icon: the OS will scale up the
* small icon when it needs a large one.
*/
Shell shell2 = new Shell(display);
shell2.setText("Small icon");
shell2.setImage(small);
shell.open();
shell2.open();
while (!shell.isDisposed()) {
if (!display.readAndDispatch())
display.sleep();
}
display.dispose();
}
}
]]>