edu.umd.cs.piccolox.event
Class PNavigationEventHandler

java.lang.Object
  edu.umd.cs.piccolo.event.PBasicInputEventHandler
      edu.umd.cs.piccolox.event.PNavigationEventHandler

All Implemented Interfaces:

PInputEventListener, java.util.EventListener

public class PNavigationEventHandler
extends PBasicInputEventHandler

PNavigationEventHandler implements simple focus based navigation. Uses mouse button one or the arrow keys to set a new focus. Animates the canvas view to keep the focus node on the screen and at 100 percent scale with minimal view movement.

Version:

1.0

Author:

Jesse Grosjean

Field Summary

static int	EAST
static int	IN
static int	NORTH
static int	OUT
static int	SOUTH
static int	WEST

Constructor Summary

PNavigationEventHandler()

Method Summary

protected PActivity	animateCameraViewTransformTo(PCamera aCamera, java.awt.geom.AffineTransform aTransform, int duration)
PActivity	directCameraViewToFocus(PCamera aCamera, PNode aFocusNode, int duration)
protected void	fillViewWhiteSpace(PCamera aCamera)
PNode	getNeighborInDirection(int aDirection)
java.util.List	getNeighbors()
void	keyPressed(PInputEvent e)
void	mousePressed(PInputEvent aEvent)
void	moveFocusDown(PInputEvent e)
void	moveFocusIn(PInputEvent e)
void	moveFocusLeft(PInputEvent e)
void	moveFocusOut(PInputEvent e)
void	moveFocusRight(PInputEvent e)
void	moveFocusToMouseOver(PInputEvent e)
void	moveFocusUp(PInputEvent e)
boolean	nodeIsNeighborInDirection(PNode aNode, int aDirection)
void	sortNodesByDistanceFromPoint(java.util.List aNodesList, java.awt.geom.Point2D aPoint)

Methods inherited from class edu.umd.cs.piccolo.event.PBasicInputEventHandler

acceptsEvent, getEventFilter, keyboardFocusGained, keyboardFocusLost, keyReleased, keyTyped, mouseClicked, mouseDragged, mouseEntered, mouseExited, mouseMoved, mouseReleased, mouseWheelRotated, mouseWheelRotatedByBlock, paramString, processEvent, setEventFilter, toString

Methods inherited from class java.lang.Object

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

Field Detail

NORTH

public static final int NORTH

See Also:

Constant Field Values

SOUTH

public static final int SOUTH

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Constant Field Values

EAST

public static final int EAST

See Also:

Constant Field Values

WEST

public static final int WEST

See Also:

Constant Field Values

IN

public static final int IN

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Constant Field Values

OUT

public static final int OUT

See Also:

Constant Field Values

Constructor Detail

PNavigationEventHandler

public PNavigationEventHandler()

Method Detail

keyPressed

public void keyPressed(PInputEvent e)

Overrides:

keyPressed in class PBasicInputEventHandler

mousePressed

public void mousePressed(PInputEvent aEvent)

Overrides:

mousePressed in class PBasicInputEventHandler

moveFocusDown

public void moveFocusDown(PInputEvent e)

moveFocusIn

public void moveFocusIn(PInputEvent e)

moveFocusLeft

public void moveFocusLeft(PInputEvent e)

moveFocusOut

public void moveFocusOut(PInputEvent e)

moveFocusRight

public void moveFocusRight(PInputEvent e)

moveFocusUp

public void moveFocusUp(PInputEvent e)

moveFocusToMouseOver

public void moveFocusToMouseOver(PInputEvent e)

getNeighborInDirection

public PNode getNeighborInDirection(int aDirection)

getNeighbors

public java.util.List getNeighbors()

nodeIsNeighborInDirection

public boolean nodeIsNeighborInDirection(PNode aNode,
                                         int aDirection)

sortNodesByDistanceFromPoint

public void sortNodesByDistanceFromPoint(java.util.List aNodesList,
                                         java.awt.geom.Point2D aPoint)

animateCameraViewTransformTo

protected PActivity animateCameraViewTransformTo(PCamera aCamera,
                                                 java.awt.geom.AffineTransform aTransform,
                                                 int duration)

directCameraViewToFocus

public PActivity directCameraViewToFocus(PCamera aCamera,
                                         PNode aFocusNode,
                                         int duration)

fillViewWhiteSpace

protected void fillViewWhiteSpace(PCamera aCamera)