edu.uci.ics.jung.visualization

Class SimpleGraphMouse

java.lang.Object

java.awt.event.MouseAdapter

edu.uci.ics.jung.visualization.SimpleGraphMouse

All Implemented Interfaces:

VisualizationViewer.GraphMouse, java.awt.event.MouseListener, java.awt.event.MouseMotionListener, java.awt.event.MouseWheelListener, java.util.EventListener

public class SimpleGraphMouse
extends java.awt.event.MouseAdapter
implements VisualizationViewer.GraphMouse

SimpleGraphMouse is the original GraphMouse class that was nested in VisualizationViewer and installed as a listener for mouse events and mouse motion events. Users can restore previous capability by creating an instance of this class and using VisualizationViewer.setGraphMouse() to re-install it. Changes in this code from the nested version are mainly those necessary to move it outside the VisualizationViewer class, and to properly handle the transform values of the VisualizationViewer (the zoom and pan)

Field Summary

Fields

Modifier and Type	Field and Description
protected float	offsetx how far the mouse point x is from the vertex center x
protected float	offsety how far the mouse point y is from the vertex center y
protected Vertex	vertexToDrag the vertex to drag with a mouseDragged operation
protected VisualizationViewer	vv the VisualizationViewer who's mouse events call these methods.

Constructor Summary

Constructors

Constructor and Description
SimpleGraphMouse(VisualizationViewer vv) create an instance for the passed VisualizationViewer

Method Summary

Methods

Modifier and Type	Method and Description
void	mouseDragged(java.awt.event.MouseEvent e) if a Vertex was picked in the mousePressed method, use the layout class to force that Vertex to move, following the motion of the mouse.
void	mouseMoved(java.awt.event.MouseEvent e) no-op here
void	mousePressed(java.awt.event.MouseEvent e) Uses the layout class to attempt to pick a vertex in the graph.
void	mouseReleased(java.awt.event.MouseEvent e) clean up after the pick of a Vertex or Edge
void	mouseWheelMoved(java.awt.event.MouseWheelEvent e) no-op here

Methods inherited from class java.awt.event.MouseAdapter

mouseClicked, mouseEntered, mouseExited

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.awt.event.MouseListener

mouseClicked, mouseEntered, mouseExited

Field Detail

vv

protected VisualizationViewer vv

the VisualizationViewer who's mouse events call these methods.

offsetx

protected float offsetx

how far the mouse point x is from the vertex center x

offsety

protected float offsety

how far the mouse point y is from the vertex center y

vertexToDrag

protected Vertex vertexToDrag

the vertex to drag with a mouseDragged operation

Constructor Detail

SimpleGraphMouse

public SimpleGraphMouse(VisualizationViewer vv)

create an instance for the passed VisualizationViewer

Parameters:

vv -

Method Detail

mousePressed

public void mousePressed(java.awt.event.MouseEvent e)

Uses the layout class to attempt to pick a vertex in the graph.

Specified by:

mousePressed in interface java.awt.event.MouseListener

Overrides:

mousePressed in class java.awt.event.MouseAdapter

mouseReleased

public void mouseReleased(java.awt.event.MouseEvent e)

clean up after the pick of a Vertex or Edge

Specified by:

mouseReleased in interface java.awt.event.MouseListener

Overrides:

mouseReleased in class java.awt.event.MouseAdapter

mouseDragged

public void mouseDragged(java.awt.event.MouseEvent e)

if a Vertex was picked in the mousePressed method, use the layout class to force that Vertex to move, following the motion of the mouse.

Specified by:

mouseDragged in interface java.awt.event.MouseMotionListener

Overrides:

mouseDragged in class java.awt.event.MouseAdapter

mouseMoved

public void mouseMoved(java.awt.event.MouseEvent e)

no-op here

Specified by:

mouseMoved in interface java.awt.event.MouseMotionListener

Overrides:

mouseMoved in class java.awt.event.MouseAdapter

mouseWheelMoved

public void mouseWheelMoved(java.awt.event.MouseWheelEvent e)

no-op here

Specified by:

mouseWheelMoved in interface java.awt.event.MouseWheelListener

Overrides:

mouseWheelMoved in class java.awt.event.MouseAdapter