181 lines
6.0 KiB
Java
181 lines
6.0 KiB
Java
/*
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* Copyright (c) 2002-2008 LWJGL Project
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are
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* met:
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*
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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*
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* * Neither the name of 'LWJGL' nor the names of
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* its contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
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* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
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* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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package org.lwjgl.opengl;
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/**
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* This is the Windows implementation of the Keyboard.
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* @author elias_naur
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*/
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import java.nio.ByteBuffer;
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import java.nio.CharBuffer;
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import org.lwjgl.BufferUtils;
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import org.lwjgl.LWJGLException;
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import org.lwjgl.input.Keyboard;
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final class WindowsKeyboard {
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private static final int MAPVK_VK_TO_VSC = 0;
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private static final int BUFFER_SIZE = 50;
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private final long hwnd;
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private final ByteBuffer keyboard_state;
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private final byte[] key_down_buffer = new byte[Keyboard.KEYBOARD_SIZE];
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private final EventQueue event_queue = new EventQueue(Keyboard.EVENT_SIZE);
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private final ByteBuffer tmp_event = ByteBuffer.allocate(Keyboard.EVENT_SIZE);
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private boolean grabbed;
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private boolean has_retained_event; // Indicates if we're waiting for a WM_CHAR
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private int retained_key_code;
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private byte retained_state;
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private int retained_char;
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private long retained_millis;
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private boolean retained_repeat;
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WindowsKeyboard(long hwnd) throws LWJGLException {
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this.hwnd = hwnd;
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keyboard_state = BufferUtils.createByteBuffer(256);
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}
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private static native boolean isWindowsNT();
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public void destroy() {
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}
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boolean isKeyDown(int lwjgl_keycode) {
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return key_down_buffer[lwjgl_keycode] == 1;
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}
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public void grab(boolean grab) {
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if(grab) {
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if (!grabbed) {
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grabbed = true;
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}
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} else {
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if (grabbed) {
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grabbed = false;
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}
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}
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}
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public void poll(ByteBuffer keyDownBuffer) {
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int old_position = keyDownBuffer.position();
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keyDownBuffer.put(key_down_buffer);
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keyDownBuffer.position(old_position);
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}
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private static native int MapVirtualKey(int uCode, int uMapType);
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private static native int ToUnicode(int wVirtKey, int wScanCode, ByteBuffer lpKeyState, CharBuffer pwszBuff, int cchBuff, int flags);
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private static native int ToAscii(int wVirtKey, int wScanCode, ByteBuffer lpKeyState, ByteBuffer lpChar, int flags);
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private static native int GetKeyboardState(ByteBuffer lpKeyState);
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private static native int GetKeyState(int virt_key);
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private void putEvent(int keycode, byte state, int ch, long millis, boolean repeat) {
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tmp_event.clear();
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tmp_event.putInt(keycode).put(state).putInt(ch).putLong(millis*1000000).put(repeat ? (byte)1 : (byte)0);
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tmp_event.flip();
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event_queue.putEvent(tmp_event);
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}
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private boolean checkShiftKey(int virt_key, byte state) {
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int key_state = (GetKeyState(virt_key) >>> 15) & 0x1;
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int lwjgl_code = WindowsKeycodes.mapVirtualKeyToLWJGLCode(virt_key);
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return (key_down_buffer[lwjgl_code] == 1 - state) && (key_state == state);
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}
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private int translateShift(int scan_code, byte state) {
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if (checkShiftKey(WindowsKeycodes.VK_LSHIFT, state)) {
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return WindowsKeycodes.VK_LSHIFT;
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} else if (checkShiftKey(WindowsKeycodes.VK_RSHIFT, state)) {
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return WindowsKeycodes.VK_RSHIFT;
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} else {
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if (scan_code== 0x2A)
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return WindowsKeycodes.VK_LSHIFT;
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else {
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if (scan_code == 0x36)
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return WindowsKeycodes.VK_RSHIFT;
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else
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return WindowsKeycodes.VK_LSHIFT;
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}
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}
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}
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private int translateExtended(int virt_key, int scan_code, byte state, boolean extended) {
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switch (virt_key) {
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case WindowsKeycodes.VK_SHIFT:
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return translateShift(scan_code, state);
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case WindowsKeycodes.VK_CONTROL:
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return extended ? WindowsKeycodes.VK_RCONTROL : WindowsKeycodes.VK_LCONTROL;
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case WindowsKeycodes.VK_MENU:
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return extended ? WindowsKeycodes.VK_RMENU : WindowsKeycodes.VK_LMENU;
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default:
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return virt_key;
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}
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}
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private void flushRetained() {
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if (has_retained_event) {
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has_retained_event = false;
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putEvent(retained_key_code, retained_state, retained_char, retained_millis, retained_repeat);
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}
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}
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public void handleKey(int virt_key, int scan_code, boolean extended, byte event_state, long millis, boolean repeat) {
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virt_key = translateExtended(virt_key, scan_code, event_state, extended);
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flushRetained();
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has_retained_event = true;
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int keycode = WindowsKeycodes.mapVirtualKeyToLWJGLCode(virt_key);
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if (keycode < key_down_buffer.length)
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key_down_buffer[keycode] = event_state;
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retained_key_code = keycode;
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retained_state = event_state;
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retained_millis = millis;
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retained_char = 0;
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retained_repeat = repeat;
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}
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public void handleChar(int event_char, long millis, boolean repeat) {
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if (has_retained_event && retained_char != 0)
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flushRetained();
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if (!has_retained_event) {
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putEvent(0, (byte)0, event_char, millis, repeat);
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} else
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retained_char = event_char;
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}
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public void read(ByteBuffer buffer) {
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flushRetained();
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event_queue.copyEvents(buffer);
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}
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}
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