// Function adapted from Gens/GS (source/gens/input/input_sdl.c)
gint input_sdl_gdk_keysnoop(GtkWidget *grab, GdkEventKey *event, gpointer user_data)
{
SDL_Event sdlev;
SDLKey sdlkey;
int keystate;
// Only grab keys from the Gens window. (or controller config window)
if (grab != main_window)
{
// Don't push this key onto the SDL event stack.
return FALSE;
}
switch (event->type)
{
case GDK_KEY_PRESS:
sdlev.type = SDL_KEYDOWN;
sdlev.key.state = SDL_PRESSED;
keystate = 1;
break;
case GDK_KEY_RELEASE:
sdlev.type = SDL_KEYUP;
sdlev.key.state = SDL_RELEASED;
keystate = 0;
break;
default:
fprintf(stderr, "Unhandled GDK event type: %d", event->type);
return FALSE;
}
// Convert this keypress from GDK to SDL.
sdlkey = (SDLKey)input_sdl_gdk_to_gens_keyval(event->keyval);
// Create an SDL event from the keypress.
sdlev.key.keysym.sym = sdlkey;
if (sdlkey != 0)
SDL_PushEvent(&sdlev);
// Change the keyboard state based on the keypress.
if(key)
key[sdlkey] = keystate;
// Allow GTK+ to process this key.
return FALSE;
}
/**
* input_sdl_gdk_keysnoop(): Keysnooping callback event for GTK+/GDK.
* @param grab_widget Widget this key was snooped from.
* @param event Event information.
* @param func_data User data.
* @return TRUE to stop processing this event; FALSE to allow GTK+ to process this event.
*/
static gint input_sdl_gdk_keysnoop(GtkWidget *grab, GdkEventKey *event, gpointer user_data)
{
SDL_Event sdlev;
// Only grab keys from the Gens window. (or controller config window)
if (grab != gens_window)
{
// Not the Gens window.
if (grab == cc_window && cc_window_is_configuring)
{
// Configuring controllers.
// Don't allow GTK+ to handle this keypress.
return TRUE;
}
// Don't push this key onto the SDL event stack.
return FALSE;
}
switch (event->type)
{
case GDK_KEY_PRESS:
sdlev.type = SDL_KEYDOWN;
sdlev.key.state = SDL_PRESSED;
break;
case GDK_KEY_RELEASE:
sdlev.type = SDL_KEYUP;
sdlev.key.state = SDL_RELEASED;
break;
default:
LOG_MSG(input, LOG_MSG_LEVEL_ERROR,
"Unhandled GDK event type: %d", event->type);
return FALSE;
}
// Convert this keypress from GDK to SDL.
// TODO: Use GENS key defines instead.
sdlev.key.keysym.sym = (SDLKey)input_sdl_gdk_to_gens_keyval(event->keyval);
if (sdlev.key.keysym.sym != -1)
SDL_PushEvent(&sdlev);
// Allow GTK+ to process this key.
return FALSE;
}
/**
* input_sdl_get_key(): Get a key. (Used for controller configuration.)
* @return Key value.
*/
uint16_t input_sdl_get_key(void)
{
// TODO: Optimize this function.
GdkEvent *event;
// Update the UI.
GensUI_update();
// Save the current SDL joystick state.
input_sdl_joystate_t prev_joystate[INPUT_SDL_MAX_JOYSTICKS];
memcpy(prev_joystate, input_sdl_joystate, sizeof(prev_joystate));
// Poll for keypresses.
while (!input_sdl_update())
{
// Check if any joystick states have changed.
int js;
for (js = 0; js < input_sdl_num_joysticks; js++)
{
int i, num_items;
input_sdl_joystate_t *cur_joy = &input_sdl_joystate[js];
input_sdl_joystate_t *prev_joy = &prev_joystate[js];
// Check buttons.
num_items = SDL_JoystickNumButtons(input_sdl_joys[js]);
if (num_items > INPUT_JOYSTICK_MAX_BUTTONS)
num_items = INPUT_JOYSTICK_MAX_BUTTONS;
for (i = 0; i < num_items; i++)
{
if (!prev_joy->buttons[i] && cur_joy->buttons[i])
{
// Button pressed.
return INPUT_GETKEY_BUTTON(js, i);
}
}
// Check axes.
num_items = SDL_JoystickNumAxes(input_sdl_joys[js]);
if (num_items > INPUT_JOYSTICK_MAX_AXES)
num_items = INPUT_JOYSTICK_MAX_AXES;
for (i = 0; i < num_items; i++)
{
if (prev_joy->axes[i] == INPUT_SDL_JOYSTATE_AXIS_CENTER &&
cur_joy->axes[i] != INPUT_SDL_JOYSTATE_AXIS_CENTER)
{
// Axis moved.
// NOTE: Axis values are different!
// * input_sdl axes: 0 == center; 1 == negative; 2 == positive
// * Key values: 0 == negative, 1 == positive
return INPUT_GETKEY_AXIS(js, i, (cur_joy->axes[i] - 1));
}
}
// Check POV hats. (Needed on Ubuntu 9.04+; maybe 8.10, too.)
num_items = SDL_JoystickNumHats(input_sdl_joys[js]);
if (num_items > INPUT_JOYSTICK_MAX_POVHATS)
num_items = INPUT_JOYSTICK_MAX_POVHATS;
for (i = 0; i < num_items; i++)
{
if (prev_joy->povhats[i] == SDL_HAT_CENTERED &&
cur_joy->povhats[i] != SDL_HAT_CENTERED)
{
// POV hat moved.
int povHatDirection;
if (cur_joy->povhats[i] & SDL_HAT_UP)
povHatDirection = INPUT_JOYSTICK_POVHAT_UP;
else if (cur_joy->povhats[i] & SDL_HAT_RIGHT)
povHatDirection = INPUT_JOYSTICK_POVHAT_RIGHT;
else if (cur_joy->povhats[i] & SDL_HAT_DOWN)
povHatDirection = INPUT_JOYSTICK_POVHAT_DOWN;
else if (cur_joy->povhats[i] & SDL_HAT_LEFT)
povHatDirection = INPUT_JOYSTICK_POVHAT_LEFT;
else
continue;
return INPUT_GETKEY_POVHAT_DIRECTION(js, i, povHatDirection);
}
}
}
// Check if a GDK key press occurred.
event = gdk_event_get();
if (event && event->type == GDK_KEY_PRESS)
return input_sdl_gdk_to_gens_keyval(event->key.keyval);
// Save the current SDL joystick state.
memcpy(prev_joystate, input_sdl_joystate, sizeof(prev_joystate));
// Sleep for 1 ms.
usleep(1000);
// Make sure the "Controller Configuration" window is still configuring.
if (!cc_window_is_configuring)
break;
}
// No key returned.
return 0;
}
