package de.lessvoid.nifty.renderer.lwjgl.input;
import org.lwjgl.input.Keyboard;
import de.lessvoid.nifty.input.keyboard.KeyboardInputEvent;
/**
* KeyboardInputEventCreator.
* @author void
*/
public class LwjglKeyboardInputEventCreator {
/**
* shiftDown.
*/
private boolean shiftDown = false;
/**
* controlDown.
*/
private boolean controlDown = false;
/**
* create KeyboardInputEvent.
* @param key key
* @param character character
* @param keyDown keyDown
* @return event
*/
public KeyboardInputEvent createEvent(final int key, final char character, final boolean keyDown) {
if (isShiftDown(key, keyDown)) {
shiftDown = true;
} else if (isShiftUp(key, keyDown)) {
shiftDown = false;
} else if (isControlDown(key, keyDown)) {
controlDown = true;
} else if (isControlUp(key, keyDown)) {
controlDown = false;
}
// because Nifty uses the same keyboard encoding like lwjgl does, we can directly forward
// the keyboard event to Nifty without the need for conversion
return new KeyboardInputEvent(key, character, keyDown, shiftDown, controlDown);
}
/**
* checks if the shift key is given.
* @param key key
* @return true when shift has been pressed and false otherwise
*/
private boolean isShiftKey(final int key) {
return key == Keyboard.KEY_LSHIFT || key == Keyboard.KEY_RSHIFT;
}
/**
* check if shift is down.
* @param key key to check
* @param keyDown keyDown
* @return true when left or right shift has been pressed
*/
private boolean isShiftDown(final int key, final boolean keyDown) {
return keyDown && isShiftKey(key);
}
/**
* check if shift is up.
* @param key key
* @param keyDown keyDown
* @return true when left or right shift has been released
*/
private boolean isShiftUp(final int key, final boolean keyDown) {
return !keyDown && isShiftKey(key);
}
/**
* check if the given key is the controlKey.
* @param key key
* @return true left or right control key pressed and false otherwise
*/
private boolean isControlKey(final int key) {
return key == Keyboard.KEY_RCONTROL || key == Keyboard.KEY_LCONTROL || key == Keyboard.KEY_LMETA || key == Keyboard.KEY_RMETA;
}
/**
* check if control key is down.
* @param key key
* @param keyDown keyDown
* @return controlDown
*/
private boolean isControlDown(final int key, final boolean keyDown) {
return keyDown && isControlKey(key);
}
/**
* check if control key is up.
* @param key key
* @param keyDown keyDown
* @return controlDown
*/
private boolean isControlUp(final int key, final boolean keyDown) {
return !keyDown && isControlKey(key);
}
}