org.eclipse.eavp.viz.visit

Class VisitMouseManager

java.lang.Object

org.eclipse.eavp.viz.visit.VisitMouseManager

public class VisitMouseManager
extends java.lang.Object

This class is used for managing a daemon thread for processing mouse input. Mouse locations are continuously passed to instances of this class via a MouseMoveListener.mouseMove(org.eclipse.swt.events.MouseEvent) implementation and stored in an AtomicReference. The thread that calls VisItSwtWidget.mouseMove(int, int, boolean, boolean) gets the mouse location from the AtomicReference field. This approach causes the image to rotate according to the location of the mouse whenever AtomicReference#get() is called in the thread.

Author:

Taylor Patterson

Constructor Summary

Constructors

Constructor and Description
VisitMouseManager(gov.lbnl.visit.swt.VisItSwtWidget widget) The constructor

Method Summary

Modifier and Type	Method and Description
void	enqueueMouseLocation(int x, int y) This function collects the necessary state information execute an image rotation operation.
void	start(int x, int y, boolean ctrl, boolean shift) This operation is called to begin executing the mouse movement processing thread.
void	stop() This operation stops the thread execution.

Methods inherited from class java.lang.Object

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

Constructor Detail

VisitMouseManager

public VisitMouseManager(gov.lbnl.visit.swt.VisItSwtWidget widget)

The constructor

Parameters:

widget - The VisItSwtWidget for which this instance will manage the mouse input.

Method Detail

start

public void start(int x,
                  int y,
                  boolean ctrl,
                  boolean shift)

This operation is called to begin executing the mouse movement processing thread.

Parameters:

x - The horizontal location where the click-and-drag began

y - The vertical location where the click-and-drag began

ctrl - The boolean indicator for whether or not the user is pressing the 'Ctrl' button

shift - The boolean indicator for whether or not the user is pressing the 'Shift' button

stop

public void stop()

This operation stops the thread execution.

enqueueMouseLocation

public void enqueueMouseLocation(int x,
                                 int y)

This function collects the necessary state information execute an image rotation operation.

Parameters:

x - The horizontal location of the mouse pointer

y - The vertical location of the mouse pointer