164 lines
4.8 KiB
C
164 lines
4.8 KiB
C
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/*
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* Copyright (c) 2002 Light Weight Java Game Library 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 'Light Weight Java Game Library' 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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* Win32 keyboard handling.
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*
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* @author cix_foo <cix_foo@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 <string.h>
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#include <assert.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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short readBuffer[KEYBOARD_BUFFER_SIZE];
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jfieldID fid_readBuffer;
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jfieldID fid_readBufferAddress;
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unsigned char key_buf[KEYBOARD_SIZE];
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extern Display *disp;
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extern Window win;
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/*
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* Class: org_lwjgl_input_Keyboard
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* Method: initIDs
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* Signature: ()V
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*/
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JNIEXPORT void JNICALL Java_org_lwjgl_input_Keyboard_initIDs
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(JNIEnv * env, jclass clazz)
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{
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// Get a global class instance, just to be sure
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static jobject globalClassLock = NULL;
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if (globalClassLock == NULL) {
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globalClassLock = (*env)->NewGlobalRef(env, clazz);
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}
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fid_readBuffer = (*env)->GetStaticFieldID(env, clazz, "readBuffer", "Ljava/nio/ByteBuffer;");
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fid_readBufferAddress = (*env)->GetStaticFieldID(env, clazz, "readBufferAddress", "I");
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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 jboolean JNICALL Java_org_lwjgl_input_Keyboard_nCreate
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(JNIEnv * env, jclass clazz)
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{
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int result = XGrabKeyboard(disp, win, False, GrabModeAsync, GrabModeAsync, CurrentTime);
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if (result != GrabSuccess) {
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#ifdef _DEBUG
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printf("Could not grab keyboard\n");
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#endif
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return JNI_FALSE;
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}
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memset(key_buf, 0, KEYBOARD_SIZE*sizeof(unsigned char));
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return JNI_TRUE;
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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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XUngrabKeyboard(disp, CurrentTime);
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}
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int checkKeyEvents(unsigned char *result_buf) {
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XEvent event;
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int count = 0;
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int buf_count = 0;
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while (XCheckMaskEvent(disp, KeyPressMask | KeyReleaseMask, &event)) {
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unsigned char keycode = (unsigned char)((event.xkey.keycode - 8) & 0xff);
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if (result_buf != NULL) {
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result_buf[buf_count++] = keycode;
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result_buf[buf_count++] = 1;
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}
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count++;
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if (event.type == KeyPress) {
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key_buf[keycode] = 1;
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} else if (event.type == KeyRelease) {
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key_buf[keycode] = 0;
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} else
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assert(0);
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}
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return count;
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}
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/*
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* Class: org_lwjgl_input_Keyboard
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* Method: nPoll
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* Signature: (I)V
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*/
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JNIEXPORT void JNICALL Java_org_lwjgl_input_Keyboard_nPoll
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(JNIEnv * env, jclass clazz, jint buf)
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{
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checkKeyEvents(NULL);
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memcpy((unsigned char*)buf, key_buf, KEYBOARD_SIZE*sizeof(unsigned char));
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}
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/*
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* Class: org_lwjgl_input_Keyboard
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* Method: nRead
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* Signature: (I)V
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*/
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JNIEXPORT jint JNICALL Java_org_lwjgl_input_Keyboard_nRead
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(JNIEnv * env, jclass clazz, jint keys)
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{
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return checkKeyEvents((unsigned char *)keys);
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}
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/*
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* Class: org_lwjgl_input_Keyboard
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* Method: nEnableBuffer
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* Signature: ()I
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*/
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JNIEXPORT jint JNICALL Java_org_lwjgl_input_Keyboard_nEnableBuffer
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(JNIEnv * env, jclass clazz)
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{
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jobject newBuffer = (*env)->NewDirectByteBuffer(env, &readBuffer, KEYBOARD_BUFFER_SIZE);
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(*env)->SetStaticObjectField(env, clazz, fid_readBuffer, newBuffer);
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(*env)->SetStaticIntField(env, clazz, fid_readBufferAddress, (jint) (&readBuffer));
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return KEYBOARD_BUFFER_SIZE;
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}
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