Added poll() logic so behavior looks like DX
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@ -47,12 +47,23 @@
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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 5
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unsigned char readBuffer[KEYBOARD_BUFFER_SIZE * 2];
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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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unsigned char key_map[KEYBOARD_SIZE];
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typedef struct {
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unsigned char keycode;
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unsigned char state;
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} input_event;
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input_event saved_key_events[KEY_EVENT_BACKLOG];
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int list_start = 0;
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int list_end = 0;
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bool keyboard_grabbed;
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extern Display *disp;
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@ -159,31 +170,27 @@ JNIEXPORT void JNICALL Java_org_lwjgl_input_Keyboard_nDestroy
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ungrabKeyboard();
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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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int state;
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updateKeyboardGrab();
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while (XCheckMaskEvent(disp, KeyPressMask | KeyReleaseMask, &event)) {
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count++;
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unsigned char keycode = (unsigned char)((event.xkey.keycode - 8) & 0xff);
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keycode = key_map[keycode];
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if (event.type == KeyPress) {
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state = 1;
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} else if (event.type == KeyRelease) {
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state = 0;
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} else
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assert(0);
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key_buf[keycode] = state;
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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++] = state;
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if (buf_count >= KEYBOARD_BUFFER_SIZE * 2)
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break;
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}
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}
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return count;
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input_event *nextEventElement(void) {
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if (list_start == list_end)
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return NULL;
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input_event *result = &(saved_key_events[list_start]);
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list_start = (list_start + 1)%KEY_EVENT_BACKLOG;
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return result;
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}
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void putEventElement(unsigned char keycode, unsigned char state) {
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int next_index = (list_end + 1)%KEY_EVENT_BACKLOG;
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if (next_index == list_start)
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return;
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saved_key_events[list_end].keycode = keycode;
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saved_key_events[list_end].state = state;
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list_end = next_index;
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}
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unsigned char getKeycode(XEvent *event) {
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unsigned char keycode = (unsigned char)((event->xkey.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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/*
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@ -194,7 +201,22 @@ int checkKeyEvents(unsigned char *result_buf) {
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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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XEvent event;
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int state;
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updateKeyboardGrab();
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while (XCheckMaskEvent(disp, KeyPressMask | KeyReleaseMask, &event)) {
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unsigned char keycode = getKeycode(&event);
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if (event.type == KeyPress) {
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state = 1;
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} else if (event.type == KeyRelease) {
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state = 0;
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} else
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assert(0);
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key_buf[keycode] = state;
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putEventElement(keycode, state);
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}
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memcpy((unsigned char*)buf, key_buf, KEYBOARD_SIZE*sizeof(unsigned char));
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}
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@ -206,7 +228,40 @@ JNIEXPORT void JNICALL Java_org_lwjgl_input_Keyboard_nPoll
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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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XEvent event;
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int count = 0;
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int buf_count = 0;
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int state;
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input_event *input_ev;
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unsigned char *result_buf = (unsigned char *)keys;
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updateKeyboardGrab();
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while ((input_ev = nextEventElement()) != NULL) {
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count++;
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// printf("Reading a key %d %d count %d\n", (int)input_ev->keycode, (int)input_ev->state, count);
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result_buf[buf_count++] = input_ev->keycode;
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result_buf[buf_count++] = input_ev->state;
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if (buf_count >= KEYBOARD_BUFFER_SIZE * 2)
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return count;
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}
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while (XCheckMaskEvent(disp, KeyPressMask | KeyReleaseMask, &event)) {
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count++;
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unsigned char keycode = getKeycode(&event);
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if (event.type == KeyPress) {
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state = 1;
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} else if (event.type == KeyRelease) {
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state = 0;
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} else
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assert(0);
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key_buf[keycode] = state;
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result_buf[buf_count++] = keycode;
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result_buf[buf_count++] = state;
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if (buf_count >= KEYBOARD_BUFFER_SIZE * 2)
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return count;
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}
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return count;
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}
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/*
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