com.touchgraph.graphlayout.interaction
Class HVScroll

java.lang.Object
  com.touchgraph.graphlayout.interaction.HVScroll

All Implemented Interfaces:

java.util.EventListener, GraphListener

public class HVScroll

extends java.lang.Object

implements GraphListener

HVScroll: Allows for scrolling horizontaly+vertically. This can be done in all sorts of ways, for instance by using the scrollbars, or by dragging.

This code is more complex then it would seem it should be, because scrolling has to be independent of the screen being warped by lenses. HVScroll needs to use the tgLensSet object because the offset is recorded in real coordinates, while the user interacts with the drawn coordinates.

Version:

1.21 $Id: HVScroll.java,v 1.1.1.1 2004/02/06 08:44:07 keesj Exp $

Author:

Alexander Shapiro

Field Summary

boolean

scrolling

Constructor Summary

HVScroll(TGPanel tgp, TGLensSet tgls)
Constructor with a TGPanel tgp and TGLensSet tgls.

Method Summary

TGPoint2D	getBottomRightDraw()
TGPoint2D	getDrawCenter()
javax.swing.JScrollBar	getHorizontalSB()
com.touchgraph.graphlayout.interaction.HVScroll.HVDragUI	getHVDragUI()
TGAbstractClickUI	getHVScrollToCenterUI()
com.touchgraph.graphlayout.interaction.HVScroll.HVLens	getLens()
java.awt.Point	getOffset()
TGPoint2D	getTopLeftDraw()
javax.swing.JScrollBar	getVerticalSB()
void	graphMoved()
void	graphReset()
void	scrollAtoB(TGPoint2D drawFrom, TGPoint2D drawTo)
void	scrollToCenter(Node n)
void	setOffset(java.awt.Point p)
void	slowScrollToCenter(Node n)

Methods inherited from class java.lang.Object

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

Field Detail

scrolling

public boolean scrolling

Constructor Detail

HVScroll

public HVScroll(TGPanel tgp,
                TGLensSet tgls)

Constructor with a TGPanel tgp and TGLensSet tgls.

Method Detail

getHorizontalSB

public javax.swing.JScrollBar getHorizontalSB()

getVerticalSB

public javax.swing.JScrollBar getVerticalSB()

getHVDragUI

public com.touchgraph.graphlayout.interaction.HVScroll.HVDragUI getHVDragUI()

getLens

public com.touchgraph.graphlayout.interaction.HVScroll.HVLens getLens()

getHVScrollToCenterUI

public TGAbstractClickUI getHVScrollToCenterUI()

getTopLeftDraw

public TGPoint2D getTopLeftDraw()

getBottomRightDraw

public TGPoint2D getBottomRightDraw()

getDrawCenter

public TGPoint2D getDrawCenter()

graphMoved

public void graphMoved()

Specified by:

graphMoved in interface GraphListener

graphReset

public void graphReset()

Specified by:

graphReset in interface GraphListener

setOffset

public void setOffset(java.awt.Point p)

getOffset

public java.awt.Point getOffset()

scrollAtoB

public void scrollAtoB(TGPoint2D drawFrom,
                       TGPoint2D drawTo)

scrollToCenter

public void scrollToCenter(Node n)

slowScrollToCenter

public void slowScrollToCenter(Node n)