Package org.jungrapht.visualization.control

Class RotatingGraphMousePlugin

java.lang.Object

org.jungrapht.visualization.control.AbstractGraphMousePlugin

org.jungrapht.visualization.control.RotatingGraphMousePlugin

All Implemented Interfaces:

MouseListener, MouseMotionListener, EventListener, GraphMousePlugin

Direct Known Subclasses:

SatelliteRotatingGraphMousePlugin

public class RotatingGraphMousePlugin
extends AbstractGraphMousePlugin
implements MouseListener, MouseMotionListener

RotatingGraphMouse provides the abiity to rotate the graph using the mouse. By default, it is activated by mouse button one drag with the shift key pressed. The modifiers can be overridden so that a different mouse/key combination activates the rotation

Author:

Tom Nelson

Nested Class Summary

Nested classes/interfaces inherited from class org.jungrapht.visualization.control.AbstractGraphMousePlugin

AbstractGraphMousePlugin.Selecting

Field Summary

Fields

Modifier and Type	Field	Description
protected int	rotatingMask

Fields inherited from class org.jungrapht.visualization.control.AbstractGraphMousePlugin

cursor, down, modifiers

Constructor Summary

Constructors

Constructor	Description
RotatingGraphMousePlugin()	create an instance with default modifier values
RotatingGraphMousePlugin(int rotatingMask)	create an instance with passed zoom in/out values

Method Summary

Modifier and Type	Method	Description
protected double	angleBetween(Point2D v1, Point2D v2)	Returns the angle between two vectors from the origin to points v1 and v2.
void	mouseClicked(MouseEvent e)
void	mouseDragged(MouseEvent e)	check the modifiers.
void	mouseEntered(MouseEvent e)
void	mouseExited(MouseEvent e)
void	mouseMoved(MouseEvent e)
void	mousePressed(MouseEvent e)	save the 'down' point and check the modifiers.
void	mouseReleased(MouseEvent e)	unset the down point and change the cursor back to the default

Methods inherited from class org.jungrapht.visualization.control.AbstractGraphMousePlugin

checkModifiers, getCursor, getModifiersEx, setCursor, setModifiers

Methods inherited from class java.lang.Object

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

Field Detail

rotatingMask

protected int rotatingMask

Constructor Detail

RotatingGraphMousePlugin

public RotatingGraphMousePlugin()

create an instance with default modifier values

RotatingGraphMousePlugin

public RotatingGraphMousePlugin(int rotatingMask)

create an instance with passed zoom in/out values

Parameters:

rotatingMask - the event modifiers to trigger rotation

Method Detail

mousePressed

public void mousePressed(MouseEvent e)

save the 'down' point and check the modifiers. If the modifiers are accepted, set the cursor to the 'hand' cursor

Specified by:

mousePressed in interface MouseListener

Parameters:

e - the event

mouseReleased

public void mouseReleased(MouseEvent e)

unset the down point and change the cursor back to the default

Specified by:

mouseReleased in interface MouseListener

mouseDragged

public void mouseDragged(MouseEvent e)

check the modifiers. If accepted, use the mouse drag motion to rotate the graph

Specified by:

mouseDragged in interface MouseMotionListener

angleBetween

protected double angleBetween(Point2D v1,
                              Point2D v2)

Returns the angle between two vectors from the origin to points v1 and v2.

Parameters:

v1 - the first point

v2 - the second point

Returns:

the angle between two vectors from the origin through points v1 and v2

mouseClicked

public void mouseClicked(MouseEvent e)

Specified by:

mouseClicked in interface MouseListener

mouseEntered

public void mouseEntered(MouseEvent e)

Specified by:

mouseEntered in interface MouseListener

mouseExited

public void mouseExited(MouseEvent e)

Specified by:

mouseExited in interface MouseListener

mouseMoved

public void mouseMoved(MouseEvent e)

Specified by:

mouseMoved in interface MouseMotionListener