Package eu.svjatoslav.sixth.e3d.gui.humaninput

Class WorldNavigationUserInputTracker

java.lang.Object

eu.svjatoslav.sixth.e3d.gui.humaninput.WorldNavigationUserInputTracker

All Implemented Interfaces:

KeyboardInputHandler, ViewRenderListener

public class WorldNavigationUserInputTracker
extends Object
implements KeyboardInputHandler, ViewRenderListener

Constructor Summary

Constructors

Constructor	Description
WorldNavigationUserInputTracker()

Method Summary

Modifier and Type	Method	Description
boolean	beforeRender(ViewPanel viewPanel, int millisecondsSinceLastFrame)	Notifies that it is about time (to keep constant framerate) to render next frame and allows listener to do any related processing that it needs to.
boolean	focusLost(ViewPanel viewPanel)
boolean	focusReceived(ViewPanel viewPanel)
boolean	keyPressed(KeyEvent event, ViewPanel viewContext)
boolean	keyReleased(KeyEvent event, ViewPanel viewContext)

Methods inherited from class java.lang.Object

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

Constructor Details

WorldNavigationUserInputTracker

public WorldNavigationUserInputTracker()

Method Details

beforeRender

public boolean beforeRender(ViewPanel viewPanel,
 int millisecondsSinceLastFrame)

Description copied from interface: ViewRenderListener

Notifies that it is about time (to keep constant framerate) to render next frame and allows listener to do any related processing that it needs to.

Each ViewRenderListener will be notified exactly once before every frame is rendered.

ViewRenderListener can determine if frame repaint is actually needed from its perspective. Frame will be rendered only if at least one listener says yes. This mechanism allows to save computing power and energy by skipping frame rendering when possible.

Specified by:

beforeRender in interface ViewRenderListener

Returns:

true if underlying view shall be re-rendered. If at least one of the view update listeners returns true, view is re-rendered.

focusLost

public boolean focusLost(ViewPanel viewPanel)

Specified by:

focusLost in interface KeyboardInputHandler

Returns:

true if view needs to be re-rendered.

focusReceived

public boolean focusReceived(ViewPanel viewPanel)

Specified by:

focusReceived in interface KeyboardInputHandler

Returns:

true if view needs to be re-rendered.

keyPressed

public boolean keyPressed(KeyEvent event,
 ViewPanel viewContext)

Specified by:

keyPressed in interface KeyboardInputHandler

Returns:

true if view needs to be re-rendered.

keyReleased

public boolean keyReleased(KeyEvent event,
 ViewPanel viewContext)

Specified by:

keyReleased in interface KeyboardInputHandler

Returns:

true if view needs to be re-rendered.