First commit of Direct3D extension.

src/java/org/lwjgl/d3d/WindowsKeyboard.java

@@ -0,0 +1,178 @@
+/*
+ * Copyright (c) 2002-2004 LWJGL Project
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *
+ * * Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ *
+ * * Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the distribution.
+ *
+ * * Neither the name of 'LWJGL' nor the names of
+ *   its contributors may be used to endorse or promote products derived
+ *   from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+ * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+ * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+package org.lwjgl.d3d;
+
+/**
+ * This is the Windows implementation of the Keyboard.
+ * @author elias_naur
+ */
+
+import java.nio.ByteBuffer;
+import java.nio.IntBuffer;
+import java.nio.CharBuffer;
+
+import org.lwjgl.LWJGLException;
+import org.lwjgl.LWJGLUtil;
+import org.lwjgl.BufferUtils;
+import org.lwjgl.input.Keyboard;
+
+final class WindowsKeyboard {
+	private final static int MAPVK_VK_TO_VSC = 0;
+
+	private final static int BUFFER_SIZE = 50;
+
+	private final long hwnd;
+	private final ByteBuffer keyboard_state;
+	private final byte[] key_down_buffer = new byte[Keyboard.KEYBOARD_SIZE];
+	private final EventQueue event_queue = new EventQueue(Keyboard.EVENT_SIZE);
+	private final ByteBuffer tmp_event = ByteBuffer.allocate(Keyboard.EVENT_SIZE);
+
+	private boolean grabbed;
+
+	private boolean has_retained_event; // Indicates if we're waiting for a WM_CHAR
+	private int retained_key_code;
+	private byte retained_state;
+	private int retained_char;
+	private long retained_millis;
+	private boolean retained_repeat;
+
+	public WindowsKeyboard(long hwnd) throws LWJGLException {
+		this.hwnd = hwnd;
+		keyboard_state = BufferUtils.createByteBuffer(256);
+	}
+	private static native boolean isWindowsNT();
+
+	public void destroy() {
+	}
+	
+	public void grab(boolean grab) {
+		if(grab) {
+			if (!grabbed) {
+				grabbed = true;
+			}
+		} else {
+			if (grabbed) {
+				grabbed = false;
+			}	
+		}
+	}
+
+	public void poll(ByteBuffer keyDownBuffer) {
+		int old_position = keyDownBuffer.position();
+		keyDownBuffer.put(key_down_buffer);
+		keyDownBuffer.position(old_position);
+	}
+	
+	private static native int MapVirtualKey(int uCode, int uMapType);
+	private static native int ToUnicode(int wVirtKey, int wScanCode, ByteBuffer lpKeyState, CharBuffer pwszBuff, int cchBuff, int flags);
+	private static native int ToAscii(int wVirtKey, int wScanCode, ByteBuffer lpKeyState, ByteBuffer lpChar, int flags);
+	private static native int GetKeyboardState(ByteBuffer lpKeyState);
+	private static native int GetKeyState(int virt_key);
+
+	private void putEvent(int keycode, byte state, int ch, long millis, boolean repeat) {
+		tmp_event.clear();
+		tmp_event.putInt(keycode).put(state).putInt(ch).putLong(millis*1000000).put(repeat ? (byte)1 : (byte)0);
+		tmp_event.flip();
+		event_queue.putEvent(tmp_event);
+	}
+
+	private boolean checkShiftKey(int virt_key, byte state) {
+		int key_state = (GetKeyState(virt_key) >>> 15) & 0x1; 
+		int lwjgl_code = WindowsKeycodes.mapVirtualKeyToLWJGLCode(virt_key);
+		return (key_down_buffer[lwjgl_code] == 1 - state) && (key_state == state);
+	}
+
+	private int translateShift(int scan_code, byte state) {
+		if (checkShiftKey(WindowsKeycodes.VK_LSHIFT, state)) {
+			return WindowsKeycodes.VK_LSHIFT;
+		} else if (checkShiftKey(WindowsKeycodes.VK_RSHIFT, state)) {
+			return WindowsKeycodes.VK_RSHIFT;
+		} else {
+			if (scan_code== 0x2A)
+				return WindowsKeycodes.VK_LSHIFT;
+			else {
+				if (scan_code == 0x36)
+					return WindowsKeycodes.VK_RSHIFT;
+				else
+					return WindowsKeycodes.VK_LSHIFT;
+			}
+		}
+	}
+
+	private int translateExtended(int virt_key, int scan_code, byte state, boolean extended) {
+		switch (virt_key) {
+			case WindowsKeycodes.VK_SHIFT:
+				return translateShift(scan_code, state);
+			case WindowsKeycodes.VK_CONTROL:
+				return extended ? WindowsKeycodes.VK_RCONTROL : WindowsKeycodes.VK_LCONTROL;
+			case WindowsKeycodes.VK_MENU:
+				return extended ? WindowsKeycodes.VK_RMENU : WindowsKeycodes.VK_LMENU;
+			default:
+				return virt_key;
+		}
+	}
+
+	private void flushRetained() {
+		if (has_retained_event) {
+			has_retained_event = false;
+			putEvent(retained_key_code, retained_state, retained_char, retained_millis, retained_repeat);
+		}
+	}
+
+	public void handleKey(int virt_key, int scan_code, boolean extended, byte event_state, long millis, boolean repeat) {
+		virt_key = translateExtended(virt_key, scan_code, event_state, extended);
+		flushRetained();
+		has_retained_event = true;
+		int keycode = WindowsKeycodes.mapVirtualKeyToLWJGLCode(virt_key);
+		if (keycode < key_down_buffer.length)
+			key_down_buffer[keycode] = event_state;
+		retained_key_code = keycode;
+		retained_state = event_state;
+		retained_millis = millis;
+		retained_char = 0;
+		retained_repeat = repeat;
+	}
+
+	public void handleChar(int event_char, long millis, boolean repeat) {
+		if (has_retained_event && retained_char != 0)
+			flushRetained();
+		if (!has_retained_event) {
+			putEvent(0, (byte)0, event_char, millis, repeat);
+		} else
+			retained_char = event_char;
+	}
+
+	public void read(ByteBuffer buffer) {
+		flushRetained();
+		event_queue.copyEvents(buffer);
+	}
+}