244 lines
7.3 KiB
C++
244 lines
7.3 KiB
C++
/*
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* Copyright (c) 2002-2004 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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/**
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* $Id$
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*
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* Linux keyboard handling.
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*
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* @author elias_naur <elias_naur@users.sourceforge.net>
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* @version $Revision$
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*/
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#include <X11/X.h>
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#include <X11/Xlib.h>
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#include <X11/Xutil.h>
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#include <string.h>
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#include <assert.h>
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#include "Window.h"
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#include "common_tools.h"
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#include "org_lwjgl_input_Keyboard.h"
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#define KEYBOARD_BUFFER_SIZE 50
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#define KEYBOARD_SIZE 256
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#define KEY_EVENT_BACKLOG 40
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static unsigned char key_buf[KEYBOARD_SIZE];
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static unsigned char key_map[KEYBOARD_SIZE];
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static event_queue_t event_queue;
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static bool keyboard_grabbed;
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static bool buffer_enabled;
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static bool translation_enabled;
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static bool created = false;
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static void grabKeyboard(void) {
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if (!keyboard_grabbed) {
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int result = XGrabKeyboard(getDisplay(), getCurrentWindow(), False, GrabModeAsync, GrabModeAsync, CurrentTime);
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if (result == GrabSuccess)
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keyboard_grabbed = true;
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}
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}
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static void ungrabKeyboard(void) {
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if (keyboard_grabbed) {
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keyboard_grabbed = false;
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XUngrabKeyboard(getDisplay(), CurrentTime);
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}
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}
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void updateKeyboardGrab(void) {
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if (!created)
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return;
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if (isFullscreen() || shouldGrab()) {
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grabKeyboard();
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} else {
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ungrabKeyboard();
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}
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}
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/*
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* Class: org_lwjgl_input_Keyboard
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* Method: nCreate
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* Signature: ()Z
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*/
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JNIEXPORT void JNICALL Java_org_lwjgl_input_Keyboard_nCreate
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(JNIEnv * env, jclass clazz)
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{
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Display *disp = incDisplay(env);
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if (disp == NULL)
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return;
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for (int i = 0; i < KEYBOARD_SIZE; i++)
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key_map[i] = i;
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key_map[0x6b] = 0xdb; // Left doze key
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key_map[0x6c] = 0xdc; // Right doze key
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key_map[0x6d] = 0xdd; // Apps key
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key_map[0x5a] = 0xc8; // Up arrow
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key_map[0x5c] = 0xcb; // Left arrow
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key_map[0x5e] = 0xcd; // Right arrow
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key_map[0x60] = 0xd0; // Down arrow
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key_map[0x59] = 0xc7; // Home
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key_map[0x62] = 0xd2; // Insert
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key_map[0x63] = 0xd3; // Delete
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key_map[0x5f] = 0xcf; // End
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key_map[0x5b] = 0xc9; // Page up
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key_map[0x61] = 0xd1; // Page down
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key_map[0x67] = 0xb7; // SysRQ
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key_map[0x66] = 0xc5; // Pause
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key_map[0x64] = 0x9c; // Numpad enter
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key_map[0x65] = 0x9d; // Right control
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key_map[0x68] = 0xb5; // Numpad divide
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memset(key_buf, 0, KEYBOARD_SIZE*sizeof(unsigned char));
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created = true;
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keyboard_grabbed = false;
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translation_enabled = false;
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buffer_enabled = false;
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initEventQueue(&event_queue);
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updateKeyboardGrab();
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}
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/*
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* Class: org_lwjgl_input_Keyboard
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* Method: nDestroy
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* Signature: ()V
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*/
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JNIEXPORT void JNICALL Java_org_lwjgl_input_Keyboard_nDestroy
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(JNIEnv * env, jclass clazz)
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{
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ungrabKeyboard();
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created = false;
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decDisplay();
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}
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static unsigned char getKeycode(XKeyEvent *event) {
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unsigned char keycode = (unsigned char)((event->keycode - 8) & 0xff);
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keycode = key_map[keycode];
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return keycode;
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}
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static int translateEvent(XKeyEvent *event) {
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static char temp_translation_buffer[KEYBOARD_BUFFER_SIZE];
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static XComposeStatus status;
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int num_chars, i;
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if (event->type == KeyRelease) {
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putEventElement(&event_queue, 0);
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putEventElement(&event_queue, 0);
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return 0;
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}
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num_chars = XLookupString(event, temp_translation_buffer, KEYBOARD_BUFFER_SIZE, NULL, &status);
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if (num_chars > 0) {
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num_chars--;
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/* Assume little endian byte order */
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putEventElement(&event_queue, temp_translation_buffer[0]);
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putEventElement(&event_queue, 0);
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for (i = 0; i < num_chars; i++) {
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putEventElement(&event_queue, 0);
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putEventElement(&event_queue, 0);
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putEventElement(&event_queue, temp_translation_buffer[i + 1]);
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putEventElement(&event_queue, 0);
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}
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} else {
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putEventElement(&event_queue, 0);
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putEventElement(&event_queue, 0);
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}
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return num_chars;
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}
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static unsigned char eventState(XKeyEvent *event) {
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if (event->type == KeyPress) {
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return 1;
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} else if (event->type == KeyRelease) {
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return 0;
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} else
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assert(0);
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}
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static void bufferEvent(XKeyEvent *key_event) {
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unsigned char keycode = getKeycode(key_event);
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unsigned char state = eventState(key_event);
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//printf("Reading a key %d %d count %d\n", (int)keycode, (int)state, num_events);
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putEventElement(&event_queue, keycode);
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putEventElement(&event_queue, state);
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if (translation_enabled)
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translateEvent(key_event);
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}
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void handleKeyEvent(XKeyEvent *event) {
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unsigned char keycode = getKeycode(event);
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unsigned char state = eventState(event);
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key_buf[keycode] = state;
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if (key_buf[org_lwjgl_input_Keyboard_KEY_LMENU] == 1 ||
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key_buf[org_lwjgl_input_Keyboard_KEY_RMENU] == 1) {
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if (key_buf[org_lwjgl_input_Keyboard_KEY_TAB] == 1) {
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if (releaseInput()) {
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key_buf[org_lwjgl_input_Keyboard_KEY_RMENU] = 0;
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key_buf[org_lwjgl_input_Keyboard_KEY_LMENU] = 0;
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key_buf[org_lwjgl_input_Keyboard_KEY_TAB] = 0;
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return;
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}
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}
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}
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if (buffer_enabled)
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bufferEvent(event);
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}
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JNIEXPORT void JNICALL Java_org_lwjgl_input_Keyboard_nPoll(JNIEnv * env, jclass clazz, jobject buffer) {
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unsigned char *new_keyboard_buffer = (unsigned char *)env->GetDirectBufferAddress(buffer);
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memcpy(new_keyboard_buffer, key_buf, KEYBOARD_SIZE*sizeof(unsigned char));
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}
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JNIEXPORT int JNICALL Java_org_lwjgl_input_Keyboard_nRead(JNIEnv * env, jclass clazz, jobject buffer, jint buffer_position) {
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int event_size;
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if (translation_enabled)
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event_size = 4;
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else
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event_size = 2;
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unsigned char* buffer_ptr = (unsigned char *)env->GetDirectBufferAddress(buffer);
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int buffer_size = env->GetDirectBufferCapacity(buffer) - buffer_position;
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return copyEvents(&event_queue, buffer_ptr + buffer_position, buffer_size, event_size);
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}
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JNIEXPORT void JNICALL Java_org_lwjgl_input_Keyboard_nEnableTranslation(JNIEnv *env, jclass clazz) {
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translation_enabled = true;
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}
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JNIEXPORT void JNICALL Java_org_lwjgl_input_Keyboard_nEnableBuffer(JNIEnv * env, jclass clazz) {
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buffer_enabled = true;
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}
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JNIEXPORT jint JNICALL Java_org_lwjgl_input_Keyboard_nisStateKeySet(JNIEnv *env, jclass clazz, jint key) {
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return org_lwjgl_input_Keyboard_STATE_UNKNOWN;
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}
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