I’ve always been more comfortable assigning listeners to KeyInput and MouseInput than using InputHandlers.
To facilitate that, I rewrote the FengGUIInputHandler (available here, on the wiki: http://www.jmonkeyengine.com/wiki/doku.php?id=fengjmeinputhandler) as a Listener that can be subscribed to KeyInput and MouseInput.
This is almost identical to the InputHandler version, but I just find it more convenient to use this way:
import org.fenggui.Display;
import org.fenggui.event.Key;
import org.fenggui.event.mouse.MouseButton;
import org.lwjgl.input.Keyboard;
import com.jme.input.KeyInputListener;
import com.jme.input.MouseInputListener;
/**
* Listener version of the FengGUIInputHandler.
* Subscribe this to KeyInput and MouseInput.
* @author Joshua Keplinger
*/
public class FengGUIListener implements MouseInputListener, KeyInputListener {
private Display disp;
private boolean keyHandled;
private boolean mouseHandled;
public FengGUIListener(Display disp)
{
this.disp = disp;
}
public boolean wasKeyHandled()
{
return keyHandled;
}
public boolean wasMouseHandled()
{
return mouseHandled;
}
private boolean down;
private int lastButton;
public void onButton(int button, boolean pressed, int x, int y)
{
mouseHandled = false;
down = pressed;
lastButton = button;
if(pressed)
mouseHandled = disp.fireMousePressedEvent(x, y, getMouseButton(button), 1);
else
mouseHandled = disp.fireMouseReleasedEvent(x, y, getMouseButton(button), 1);
}
public void onMove(int xDelta, int yDelta, int newX, int newY)
{
mouseHandled = false;
// If the button is down, the mouse is being dragged
if(down)
mouseHandled = disp.fireMouseDraggedEvent(newX, newY, getMouseButton(lastButton));
else
mouseHandled = disp.fireMouseMovedEvent(newX, newY);
}
public void onWheel(int wheelDelta, int x, int y)
{
mouseHandled = false;
// wheelDelta is positive if the mouse wheel rolls up
if(wheelDelta > 0)
mouseHandled = disp.fireMouseWheel(x, y, true, wheelDelta);
else
mouseHandled = disp.fireMouseWheel(x, y, false, wheelDelta);
}
/**
* Helper method that maps the mouse button to the equivalent
* FengGUI MouseButton enumeration.
* @param button The button pressed or released.
* @return The FengGUI MouseButton enumeration matching the
* button.
*/
private MouseButton getMouseButton(int button)
{
switch(button)
{
case 0:
return MouseButton.LEFT;
case 1:
return MouseButton.RIGHT;
case 2:
return MouseButton.MIDDLE;
default:
return MouseButton.LEFT;
}
}
@Override
public void onKey(char character, int keyCode, boolean pressed) {
keyHandled = false;
Key key = mapKeyEvent();
if(pressed)
{
keyHandled = disp.fireKeyPressedEvent(character, key);
// Bug workaround see note after code
if (key == Key.LETTER || key == Key.DIGIT)
keyHandled = disp.fireKeyTypedEvent(character);
} else
keyHandled = disp.fireKeyReleasedEvent(character, key);
}
/**
* Helper method that maps LWJGL key events to FengGUI.
* @return The Key enumeration of the last key pressed.
*/
private Key mapKeyEvent()
{
Key keyClass;
switch(Keyboard.getEventKey())
{
case Keyboard.KEY_BACK:
keyClass = Key.BACKSPACE;
break;
case Keyboard.KEY_RETURN:
keyClass = Key.ENTER;
break;
case Keyboard.KEY_DELETE:
keyClass = Key.DELETE;
break;
case Keyboard.KEY_UP:
keyClass = Key.UP;
break;
case Keyboard.KEY_RIGHT:
keyClass = Key.RIGHT;
break;
case Keyboard.KEY_LEFT:
keyClass = Key.LEFT;
break;
case Keyboard.KEY_DOWN:
keyClass = Key.DOWN;
break;
case Keyboard.KEY_SCROLL:
keyClass = Key.SHIFT;
break;
case Keyboard.KEY_LMENU:
keyClass = Key.ALT;
break;
case Keyboard.KEY_RMENU:
keyClass = Key.ALT;
break;
case Keyboard.KEY_LCONTROL:
keyClass = Key.CTRL;
break;
case Keyboard.KEY_RSHIFT:
keyClass = Key.SHIFT;
break;
case Keyboard.KEY_LSHIFT:
keyClass = Key.SHIFT;
break;
case Keyboard.KEY_RCONTROL:
keyClass = Key.CTRL;
break;
case Keyboard.KEY_INSERT:
keyClass = Key.INSERT;
break;
case Keyboard.KEY_F12:
keyClass = Key.F12;
break;
case Keyboard.KEY_F11:
keyClass = Key.F11;
break;
case Keyboard.KEY_F10:
keyClass = Key.F10;
break;
case Keyboard.KEY_F9:
keyClass = Key.F9;
break;
case Keyboard.KEY_F8:
keyClass = Key.F8;
break;
case Keyboard.KEY_F7:
keyClass = Key.F7;
break;
case Keyboard.KEY_F6:
keyClass = Key.F6;
break;
case Keyboard.KEY_F5:
keyClass = Key.F5;
break;
case Keyboard.KEY_F4:
keyClass = Key.F4;
break;
case Keyboard.KEY_F3:
keyClass = Key.F3;
break;
case Keyboard.KEY_F2:
keyClass = Key.F2;
break;
case Keyboard.KEY_F1:
keyClass = Key.F1;
break;
default:
if("1234567890".indexOf(Keyboard.getEventCharacter()) != -1) {
keyClass = Key.DIGIT;
} else {
// @todo must not necessarily be a letter!! #
keyClass = Key.LETTER;
}
break;
}
return keyClass;
}
}
