uk.ac.essex.ia.graph.jgraph
Class IAMarqueeHandler

java.lang.Object
  com.jgraph.graph.BasicMarqueeHandler
      uk.ac.essex.ia.graph.jgraph.IAMarqueeHandler

public class IAMarqueeHandler
extends com.jgraph.graph.BasicMarqueeHandler

The margue handler manages most of the events that are fired by the graph.
Date: 11-Jul-2002
Adapted from code by A. Gaudenz see JGrpah

See Also:

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Field Summary

protected java.awt.Point	current
protected com.jgraph.graph.PortView	firstPort
protected com.jgraph.graph.PortView	port
protected java.awt.Point	start

Fields inherited from class com.jgraph.graph.BasicMarqueeHandler

currentPoint, lastVisibleRect, marqueeBounds, previousCursor, startPoint

Constructor Summary

IAMarqueeHandler(IAJGraph graph)

Method Summary

com.jgraph.graph.PortView	getSourcePortAt(java.awt.Point point)
protected com.jgraph.graph.PortView	getTargetPortAt(java.awt.Point point) Find a Cell at point and Return its first Port as a PortView
boolean	isForceMarqueeEvent(java.awt.event.MouseEvent e) Override to Gain Control (for PopupMenu and ConnectMode)
void	mouseDragged(java.awt.event.MouseEvent e) Find Port under Mouse and Repaint Connector
void	mouseMoved(java.awt.event.MouseEvent e) Show Special Cursor if Over Port
void	mousePressed(java.awt.event.MouseEvent e) Display PopupMenu or Remember Start Location and First Port
void	mouseReleased(java.awt.event.MouseEvent e) Connect the First Port and the Current Port in the Graph or Repaint
protected void	paintConnector(java.awt.Color fg, java.awt.Color bg, java.awt.Graphics g) Use Xor-Mode on Graphics to Paint Connector
protected void	paintPort(java.awt.Graphics g) Use the Preview Flag to Draw a Highlighted Port

Methods inherited from class com.jgraph.graph.BasicMarqueeHandler

overlay, paint

Methods inherited from class java.lang.Object

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

Field Detail

start

protected java.awt.Point start

current

protected java.awt.Point current

port

protected com.jgraph.graph.PortView port

firstPort

protected com.jgraph.graph.PortView firstPort

Constructor Detail

IAMarqueeHandler

public IAMarqueeHandler(IAJGraph graph)

Method Detail

isForceMarqueeEvent

public boolean isForceMarqueeEvent(java.awt.event.MouseEvent e)

Override to Gain Control (for PopupMenu and ConnectMode)

Overrides:

isForceMarqueeEvent in class com.jgraph.graph.BasicMarqueeHandler

Parameters:

e -

Returns:

mousePressed

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

Display PopupMenu or Remember Start Location and First Port

Overrides:

mousePressed in class com.jgraph.graph.BasicMarqueeHandler

Parameters:

e -

mouseDragged

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

Find Port under Mouse and Repaint Connector

Overrides:

mouseDragged in class com.jgraph.graph.BasicMarqueeHandler

Parameters:

e -

getSourcePortAt

public com.jgraph.graph.PortView getSourcePortAt(java.awt.Point point)

getTargetPortAt

protected com.jgraph.graph.PortView getTargetPortAt(java.awt.Point point)

Find a Cell at point and Return its first Port as a PortView

Parameters:

point -

Returns:

mouseReleased

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

Connect the First Port and the Current Port in the Graph or Repaint

Overrides:

mouseReleased in class com.jgraph.graph.BasicMarqueeHandler

Parameters:

e -

mouseMoved

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

Show Special Cursor if Over Port

Overrides:

mouseMoved in class com.jgraph.graph.BasicMarqueeHandler

Parameters:

e -

paintConnector

protected void paintConnector(java.awt.Color fg,
                              java.awt.Color bg,
                              java.awt.Graphics g)

Use Xor-Mode on Graphics to Paint Connector

Parameters:

fg -

bg -

g -

paintPort

protected void paintPort(java.awt.Graphics g)

Use the Preview Flag to Draw a Highlighted Port

Parameters:

g -