uk.ac.starlink.topcat.plot
Class Zoomer

java.lang.Object
  java.awt.event.MouseAdapter
      javax.swing.event.MouseInputAdapter
          uk.ac.starlink.topcat.plot.Zoomer

All Implemented Interfaces:

MouseListener, MouseMotionListener, MouseWheelListener, EventListener, MouseInputListener

public class Zoomer
extends MouseInputAdapter

Mouse listener which can manufacture zoom requests on the basis of mouse gestures. The zones over which mouse gestures are gathered from and over which graphical feedback is given is defined by a list of ZoomRegion objects held by instances of this class.

To use an instance of this class, you must install it as both a MouseListener and a MouseMotionListener on the relevant component.

Since:

28 Mar 2006

Author:

Mark Taylor

Constructor Summary

Zoomer()
Constructor.

Method Summary

List	getRegions() Returns the list of ZoomRegion objects which defines the behaviour of this object.
void	mouseDragged(MouseEvent evt)
void	mouseMoved(MouseEvent evt)
void	mousePressed(MouseEvent evt)
void	mouseReleased(MouseEvent evt)
void	setCursorComponent(Component comp) Sest the component, if any, over which this object should modify the cursor over.
void	setRegions(List regionList) Sets the list of ZoomRegion objects which defines the behaviour of this object.

Methods inherited from class java.awt.event.MouseAdapter

mouseClicked, mouseEntered, mouseExited, mouseWheelMoved

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

Constructor Detail

Zoomer

public Zoomer()

Constructor.

Method Detail

getRegions

public List getRegions()

Returns the list of ZoomRegion objects which defines the behaviour of this object.

Returns:

zoom region list

setRegions

public void setRegions(List regionList)

Sets the list of ZoomRegion objects which defines the behaviour of this object.

Parameters:

regionList - list of zoom regions

setCursorComponent

public void setCursorComponent(Component comp)

Sest the component, if any, over which this object should modify the cursor over. The cursor will be altered to indicate when the mouse is in an active zoom target region.

Parameters:

comp - component over which the cursor can be changed

mousePressed

public void mousePressed(MouseEvent evt)

Specified by:

mousePressed in interface MouseListener

Overrides:

mousePressed in class MouseAdapter

mouseMoved

public void mouseMoved(MouseEvent evt)

Specified by:

mouseMoved in interface MouseMotionListener

Overrides:

mouseMoved in class MouseAdapter

mouseDragged

public void mouseDragged(MouseEvent evt)

Specified by:

mouseDragged in interface MouseMotionListener

Overrides:

mouseDragged in class MouseAdapter

mouseReleased

public void mouseReleased(MouseEvent evt)

Specified by:

mouseReleased in interface MouseListener

Overrides:

mouseReleased in class MouseAdapter