prefuse.controls

Class WheelZoomControl

java.lang.Object

prefuse.controls.ControlAdapter

prefuse.controls.AbstractZoomControl

prefuse.controls.WheelZoomControl

All Implemented Interfaces:

java.awt.event.KeyListener, java.awt.event.MouseListener, java.awt.event.MouseMotionListener, java.awt.event.MouseWheelListener, java.util.EventListener, Control

public class WheelZoomControl
extends AbstractZoomControl

Zooms the display using the mouse scroll wheel, changing the scale of the viewable region.

Field Summary

Fields inherited from class prefuse.controls.AbstractZoomControl

DEFAULT_MAX_SCALE, DEFAULT_MIN_SCALE, m_maxScale, m_minScale, m_zoomOverItem, MAX_ZOOM, MIN_ZOOM, NO_ZOOM, ZOOM

Fields inherited from interface prefuse.controls.Control

LEFT_MOUSE_BUTTON, MIDDLE_MOUSE_BUTTON, RIGHT_MOUSE_BUTTON

Constructor Summary

Constructors

Constructor and Description
WheelZoomControl() Creates a new WheelZoomControl with the default zoom direction and zooming on the center of the display.
WheelZoomControl(boolean inverted, boolean atPointer) Creates a new WheelZoomControl.

Method Summary

Modifier and Type	Method and Description
void	itemWheelMoved(VisualItem item, java.awt.event.MouseWheelEvent e) Invoked when the mouse wheel is rotated while the mouse is over a VisualItem.
void	mouseWheelMoved(java.awt.event.MouseWheelEvent e) Invoked when the mouse wheel is rotated while the mouse is over the Display (but NOT a VisualItem).

Methods inherited from class prefuse.controls.AbstractZoomControl

getMaxScale, getMinScale, isZoomOverItem, setMaxScale, setMinScale, setZoomOverItem, zoom

Methods inherited from class prefuse.controls.ControlAdapter

isEnabled, itemClicked, itemDragged, itemEntered, itemExited, itemKeyPressed, itemKeyReleased, itemKeyTyped, itemMoved, itemPressed, itemReleased, keyPressed, keyReleased, keyTyped, mouseClicked, mouseDragged, mouseEntered, mouseExited, mouseMoved, mousePressed, mouseReleased, setEnabled

Methods inherited from class java.lang.Object

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

Constructor Detail

WheelZoomControl

public WheelZoomControl(boolean inverted,
                        boolean atPointer)

Creates a new WheelZoomControl. If inverted is true, scrolling the mouse wheel toward you will make the graph appear smaller. If atPointer is true, zooming will be centered on the mouse pointer instead of the center of the display.

Parameters:

inverted - true if the scroll direction should be inverted

atPointer - true if zooming should be centered on the mouse pointer

WheelZoomControl

public WheelZoomControl()

Creates a new WheelZoomControl with the default zoom direction and zooming on the center of the display.

Method Detail

itemWheelMoved

public void itemWheelMoved(VisualItem item,
                           java.awt.event.MouseWheelEvent e)

Description copied from interface: Control

Invoked when the mouse wheel is rotated while the mouse is over a VisualItem.

Specified by:

itemWheelMoved in interface Control

Overrides:

itemWheelMoved in class ControlAdapter

See Also:

Control.itemWheelMoved(prefuse.visual.VisualItem, java.awt.event.MouseWheelEvent)

mouseWheelMoved

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

Description copied from interface: Control

Invoked when the mouse wheel is rotated while the mouse is over the Display (but NOT a VisualItem).

Specified by:

mouseWheelMoved in interface java.awt.event.MouseWheelListener

Specified by:

mouseWheelMoved in interface Control

Overrides:

mouseWheelMoved in class ControlAdapter

See Also:

MouseWheelListener.mouseWheelMoved(java.awt.event.MouseWheelEvent)