In your Overlay's paint method, clear the rectangle first. g2d.clearRect(0, 0, width, height);
Michael Bishop > -----Original Message----- > From: javaNoob [mailto:[EMAIL PROTECTED] > Sent: Sunday, July 06, 2008 1:39 AM > To: batik-users@xmlgraphics.apache.org > Subject: Re: Select an element and draw it on the canvas > without updating the svg > > > help!! how can i drag a shape on an overlay properly? i can > drag a shape but i cannot erase the previously paited shape.. > > here is my code: > > import java.awt.Color; > import java.awt.Graphics; > import java.awt.Graphics2D; > import java.awt.event.InputEvent; > import java.awt.event.MouseEvent; > > import org.apache.batik.swing.gvt.InteractorAdapter; > import org.apache.batik.swing.gvt.JGVTComponent; > import org.apache.batik.swing.gvt.Overlay; > > public class CustomInteractor extends InteractorAdapter { > > protected boolean finished = true; > protected Overlay overlay = new MyOverlay(); > int x = 0; > int y = 0; > > @Override > public boolean startInteraction(InputEvent ie) { > return true; > } > > @Override > public boolean endInteraction() { > return finished; > } > > @Override > public void mousePressed(MouseEvent e) { > x = e.getX(); > y = e.getY(); > JGVTComponent c = (JGVTComponent) e.getSource(); > c.getOverlays().add(overlay); > } > > @Override > public void mouseReleased(MouseEvent e) { > x = e.getX(); > y = e.getY(); > finished = true; > JGVTComponent c = (JGVTComponent) e.getSource(); > c.getOverlays().remove(overlay); > } > > @Override > public void mouseDragged(MouseEvent e) { > x = e.getX(); > y = e.getY(); > JGVTComponent c = (JGVTComponent) e.getSource(); > overlay.paint(c.getGraphics()); > } > > protected class MyOverlay implements Overlay { > > public void paint(Graphics g) { > Graphics2D g2d = (Graphics2D) g; > g2d.setColor(new Color(255, 0, 0, 128)); > g2d.fillRect(x - 5, y - 5, 10, 10); > } > } > } > -- > View this message in context: > http://www.nabble.com/Select-an-element-and-draw-it-on-the-can > vas-without-updating-the-svg-tp18189565p18299068.html > Sent from the Batik - Users mailing list archive at Nabble.com. > > > --------------------------------------------------------------------- > To unsubscribe, e-mail: [EMAIL PROTECTED] > For additional commands, e-mail: > [EMAIL PROTECTED] > > --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
