com.touchgraph.graphlayout.interaction
Class DragNodeUI

java.lang.Object
  com.touchgraph.graphlayout.interaction.TGUserInterface
      com.touchgraph.graphlayout.interaction.TGSelfDeactivatingUI
          com.touchgraph.graphlayout.interaction.TGAbstractDragUI
              com.touchgraph.graphlayout.interaction.DragNodeUI

Direct Known Subclasses:

MultiDragNodeUI

public class DragNodeUI
extends TGAbstractDragUI

DragNodeUI contains code for dragging nodes.

Parts of this code build upon Sun's Graph Layout example. http://java.sun.com/applets/jdk/1.1/demo/GraphLayout/Graph.java

Version:

1.21 $Id: DragNodeUI.java,v 3.1 2005/04/03 01:55:20 altheim Exp $

Author:

Alexander Shapiro

Field Summary

Point

dragOffs Stores the distance between the cursor and the center of the node when dragging occurs so that the cursor remains at the same position on the node otherwise, the cursor jumps to the center of the node.

Fields inherited from class com.touchgraph.graphlayout.interaction.TGAbstractDragUI

mouseWasDragged, tgPanel

Constructor Summary

DragNodeUI(TGPanel tgp)
Constructor with TGPanel tgp.

Method Summary

void	mouseDragged(MouseEvent e)
void	mousePressed(MouseEvent e)
void	mouseReleased(MouseEvent e)
void	preActivate()
void	preDeactivate()

Methods inherited from class com.touchgraph.graphlayout.interaction.TGAbstractDragUI

activate, activate, deactivate

Methods inherited from class com.touchgraph.graphlayout.interaction.TGSelfDeactivatingUI

setSelfDeactivate

Methods inherited from class com.touchgraph.graphlayout.interaction.TGUserInterface

activate, isActive

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

dragOffs

public Point dragOffs

Stores the distance between the cursor and the center of the node when dragging occurs so that the cursor remains at the same position on the node otherwise, the cursor jumps to the center of the node.

Constructor Detail

DragNodeUI

public DragNodeUI(TGPanel tgp)

Constructor with TGPanel tgp.

Method Detail

preActivate

public void preActivate()

Specified by:

preActivate in class TGAbstractDragUI

preDeactivate

public void preDeactivate()

Specified by:

preDeactivate in class TGAbstractDragUI

mousePressed

public void mousePressed(MouseEvent e)

Specified by:

mousePressed in class TGAbstractDragUI

mouseReleased

public void mouseReleased(MouseEvent e)

Specified by:

mouseReleased in class TGAbstractDragUI

mouseDragged

public void mouseDragged(MouseEvent e)

Specified by:

mouseDragged in class TGAbstractDragUI