Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]

Groups > comp.lang.java.gui > #275

Re: Listening to Mouse le

Show all headers | View raw

  To: comp.lang.java.gui
Thank you for your response Andrew.  When I was first thinking about
this problem, I knew that simply using co-ordinates would be
inappropriate because if the application was continually tracking
co-ordiates, it would be rather heavyweight for the problem.  It wasn't
until I read you post that I sat back and realised I could check
co-ordinates once the mouseExited command fired, giving me a sensible
solution.


private class FrameFocusListener extends MouseAdapter {
	private JFrame focus;

	// Take a reference to the component to track
	public FrameFocusListener(JFrame frame) {
		this.focus = frame;
	}

	public void mouseExited(MouseEvent event) {
		if(event.getComponent().equals(focus)) {
			// Get new frame position, in case it's changed
			Rectangle bounds = focus.getBounds();
			// There is a fuzzy area at the edge of the frame, trim inwards
			// to avoid this
			double minX = bounds.getX()+5;
			double minY = bounds.getY()+25; // Also remove the titlebar height
			double maxX = bounds.getWidth()+bounds.getX()-5;
			double maxY = bounds.getHeight()+bounds.getY()-5;

			Point mousePos = event.getComponent().getLocation();
			mousePos.translate(event.getX(), event.getY());
			double mouseX = mousePos.getX();
			double mouseY = mousePos.getY();

			if(mouseX < minX || mouseX > maxX ||
					mouseY < minY || mouseY > maxY) {
				System.out.println("Frame exited");
			}
		}
	}
}

---
 * Synchronet * The Whitehouse BBS --- whitehouse.hulds.com --- check it out free usenet!
--- Synchronet 3.15a-Win32 NewsLink 1.92
Time Warp of the Future BBS - telnet://time.synchro.net:24

Back to comp.lang.java.gui | Previous | Next — Previous in thread | Next in thread | Find similar

Thread

Listening to Mouse leavin "James Appleby" <james.appleby@THRWHITE.remove-dii-this> - 2011-04-27 15:26 +0000
  Re: Listening to Mouse le "Andrew Thompson" <andrew.thompson@THRWHITE.remove-dii-this> - 2011-04-27 15:26 +0000
  Re: Listening to Mouse le "Thomas Kellerer" <thomas.kellerer@THRWHITE.remove-dii-this> - 2011-04-27 15:26 +0000
  Re: Listening to Mouse le "James Appleby" <james.appleby@THRWHITE.remove-dii-this> - 2011-04-27 15:26 +0000
    Re: Listening to Mouse le "Oliver Wong" <oliver.wong@THRWHITE.remove-dii-this> - 2011-04-27 15:26 +0000
      Re: Listening to Mouse le "James Appleby" <james.appleby@THRWHITE.remove-dii-this> - 2011-04-27 15:26 +0000

csiph-web