Use event timestamp to detect key repeat events in KeyboardEventQueue

src/java/org/lwjgl/opengl/KeyboardEventQueue.java

@@ -53,6 +53,13 @@ final class KeyboardEventQueue extends EventQueue implements KeyListener {
 
 	private final Component component;
 
+	private boolean has_deferred_event;
+	private long deferred_nanos;
+	private int deferred_key_code;
+	private int deferred_key_location;
+	private byte deferred_key_state;
+	private int deferred_character;
+
 	static {
 		KEY_MAP[KeyEvent.VK_0] = Keyboard.KEY_0;
 		KEY_MAP[KeyEvent.VK_1] = Keyboard.KEY_1;
@@ -265,14 +272,50 @@ final class KeyboardEventQueue extends EventQueue implements KeyListener {
 	}
 
 	public synchronized void poll(ByteBuffer key_down_buffer) {
+		flushDeferredEvent();
 		int old_position = key_down_buffer.position();
 		key_down_buffer.put(key_states);
 		key_down_buffer.position(old_position);
 	}
 
-	private synchronized void handleKey(int key_code_mapped, byte state, int character, long nanos) {
-		if ( character == KeyEvent.CHAR_UNDEFINED )
+	public synchronized void copyEvents(ByteBuffer dest) {
+		flushDeferredEvent();
+		super.copyEvents(dest);
+	}
+
+	private synchronized void handleKey(int key_code, int key_location, byte state, int character, long nanos) {
+		if (character == KeyEvent.CHAR_UNDEFINED)
 			character = Keyboard.CHAR_NONE;
+		if (state == 1) {
+			if (has_deferred_event) {
+				if ((nanos == deferred_nanos && deferred_key_code == key_code &&
+						deferred_key_location == key_location)) {
+					has_deferred_event = false;
+					return; // Ignore repeated key down, key up event pair
+				}
+				flushDeferredEvent();
+			}
+			putKeyEvent(key_code, key_location, state, character, nanos);
+		} else {
+			flushDeferredEvent();
+			has_deferred_event = true;
+			deferred_nanos = nanos;
+			deferred_key_code = key_code;
+			deferred_key_location = key_location;
+			deferred_key_state = state;
+			deferred_character = character;
+		}
+	}
+
+	private void flushDeferredEvent() {
+		if (has_deferred_event) {
+			putKeyEvent(deferred_key_code, deferred_key_location, deferred_key_state, deferred_character, deferred_nanos);
+			has_deferred_event = false;
+		}
+	}
+
+	private void putKeyEvent(int key_code, int key_location, byte state, int character, long nanos) {
+		int key_code_mapped = getMappedKeyCode(key_code, key_location);
 		/* Ignore repeating presses */
 		if ( key_states[key_code_mapped] == state )
 			return;
@@ -306,11 +349,11 @@ final class KeyboardEventQueue extends EventQueue implements KeyListener {
 	}
 
 	public void keyPressed(KeyEvent e) {
-		handleKey(getMappedKeyCode(e.getKeyCode(), e.getKeyLocation()), (byte)1, e.getKeyChar(), e.getWhen()*1000000);
+		handleKey(e.getKeyCode(), e.getKeyLocation(), (byte)1, e.getKeyChar(), e.getWhen()*1000000);
 	}
 
 	public void keyReleased(KeyEvent e) {
-		handleKey(getMappedKeyCode(e.getKeyCode(), e.getKeyLocation()), (byte)0, Keyboard.CHAR_NONE, e.getWhen()*1000000);
+		handleKey(e.getKeyCode(), e.getKeyLocation(), (byte)0, Keyboard.CHAR_NONE, e.getWhen()*1000000);
 	}
 
 	public void keyTyped(KeyEvent e) {

src/java/org/lwjgl/opengl/LinuxAWTInput.java

@@ -92,7 +92,6 @@ final class LinuxAWTInput extends AbstractAWTInput {
 		if (input_grabbed) {
 //			LinuxDisplay.nUngrabKeyboard(display);
 			LinuxDisplay.nUngrabPointer(display);
-			LinuxDisplay.nSetRepeatMode(display, LinuxDisplay.AutoRepeatModeDefault);
 			input_grabbed = false;
 		}
 	}
@@ -100,7 +99,6 @@ final class LinuxAWTInput extends AbstractAWTInput {
 	private void grabInput(long window) {
 		if (!input_grabbed) {
 //			int res1 = LinuxDisplay.nGrabKeyboard(display, window);
-			LinuxDisplay.nSetRepeatMode(display, LinuxDisplay.AutoRepeatModeOff);
 			int res2 = LinuxDisplay.nGrabPointer(display, window, blank_cursor);
 			if (/*res1 == LinuxDisplay.GrabSuccess && */res2 == LinuxDisplay.GrabSuccess)
 				input_grabbed = true;

src/java/org/lwjgl/opengl/LinuxDisplay.java

@@ -789,7 +789,6 @@ final class LinuxDisplay implements DisplayImplementation {
 			}
 		}
 	}
-	static native void nSetRepeatMode(long display, int mode);
 
 	public void grabMouse(boolean new_grab) {
 		lockAWT();

src/native/linux/org_lwjgl_opengl_Display.c

@@ -469,13 +469,6 @@ JNIEXPORT jlong JNICALL Java_org_lwjgl_opengl_LinuxDisplay_nGetInputFocus(JNIEnv
 	return win;
 }
 
-JNIEXPORT void JNICALL Java_org_lwjgl_opengl_LinuxDisplay_nSetRepeatMode(JNIEnv *env, jclass unused, jlong display_ptr, jint mode) {
-	Display *disp = (Display *)(intptr_t)display_ptr;
-	XKeyboardControl repeat_mode;
-	repeat_mode.auto_repeat_mode = mode;
-	XChangeKeyboardControl(disp, KBAutoRepeatMode, &repeat_mode);
-}
-
 JNIEXPORT void JNICALL Java_org_lwjgl_opengl_LinuxDisplay_nIconifyWindow(JNIEnv *env, jclass unused, jlong display_ptr, jlong window_ptr, jint screen) {
 	Display *disp = (Display *)(intptr_t)display_ptr;
 	Window win = (Window)window_ptr;