int
SDL_PrivateJoystickBall(SDL_Joystick * joystick, Uint8 ball,
Sint16 xrel, Sint16 yrel)
{
int posted;
/* Make sure we're not getting garbage events */
if (ball >= joystick->nballs) {
return 0;
}
/* We ignore events if we don't have keyboard focus. */
if (SDL_PrivateJoystickShouldIgnoreEvent()) {
return 0;
}
/* Update internal mouse state */
joystick->balls[ball].dx += xrel;
joystick->balls[ball].dy += yrel;
/* Post the event, if desired */
posted = 0;
#if !SDL_EVENTS_DISABLED
if (SDL_GetEventState(SDL_JOYBALLMOTION) == SDL_ENABLE) {
SDL_Event event;
event.jball.type = SDL_JOYBALLMOTION;
event.jball.which = joystick->instance_id;
event.jball.ball = ball;
event.jball.xrel = xrel;
event.jball.yrel = yrel;
posted = SDL_PushEvent(&event) == 1;
}
#endif /* !SDL_EVENTS_DISABLED */
return (posted);
}
int
SDL_PrivateJoystickAxis(SDL_Joystick * joystick, Uint8 axis, Sint16 value)
{
int posted;
/* Make sure we're not getting garbage or duplicate events */
if (axis >= joystick->naxes) {
return 0;
}
if (!joystick->axes[axis].has_initial_value) {
joystick->axes[axis].initial_value = value;
joystick->axes[axis].value = value;
joystick->axes[axis].zero = value;
joystick->axes[axis].has_initial_value = SDL_TRUE;
}
if (value == joystick->axes[axis].value) {
return 0;
}
if (!joystick->axes[axis].sent_initial_value) {
/* Make sure we don't send motion until there's real activity on this axis */
const int MAX_ALLOWED_JITTER = SDL_JOYSTICK_AXIS_MAX / 80; /* ShanWan PS3 controller needed 96 */
if (SDL_abs(value - joystick->axes[axis].value) <= MAX_ALLOWED_JITTER) {
return 0;
}
joystick->axes[axis].sent_initial_value = SDL_TRUE;
joystick->axes[axis].value = value; /* Just so we pass the check above */
SDL_PrivateJoystickAxis(joystick, axis, joystick->axes[axis].initial_value);
}
/* We ignore events if we don't have keyboard focus, except for centering
* events.
*/
if (SDL_PrivateJoystickShouldIgnoreEvent()) {
if ((value > joystick->axes[axis].zero && value >= joystick->axes[axis].value) ||
(value < joystick->axes[axis].zero && value <= joystick->axes[axis].value)) {
return 0;
}
}
/* Update internal joystick state */
joystick->axes[axis].value = value;
/* Post the event, if desired */
posted = 0;
#if !SDL_EVENTS_DISABLED
if (SDL_GetEventState(SDL_JOYAXISMOTION) == SDL_ENABLE) {
SDL_Event event;
event.type = SDL_JOYAXISMOTION;
event.jaxis.which = joystick->instance_id;
event.jaxis.axis = axis;
event.jaxis.value = value;
posted = SDL_PushEvent(&event) == 1;
}
#endif /* !SDL_EVENTS_DISABLED */
return (posted);
}
int
SDL_PrivateJoystickButton(SDL_Joystick * joystick, Uint8 button, Uint8 state)
{
int posted;
#if !SDL_EVENTS_DISABLED
SDL_Event event;
switch (state) {
case SDL_PRESSED:
event.type = SDL_JOYBUTTONDOWN;
break;
case SDL_RELEASED:
event.type = SDL_JOYBUTTONUP;
break;
default:
/* Invalid state -- bail */
return (0);
}
#endif /* !SDL_EVENTS_DISABLED */
/* Make sure we're not getting garbage or duplicate events */
if (button >= joystick->nbuttons) {
return 0;
}
if (state == joystick->buttons[button]) {
return 0;
}
/* We ignore events if we don't have keyboard focus, except for button
* release. */
if (SDL_PrivateJoystickShouldIgnoreEvent()) {
if (state == SDL_PRESSED) {
return 0;
}
}
/* Update internal joystick state */
joystick->buttons[button] = state;
/* Post the event, if desired */
posted = 0;
#if !SDL_EVENTS_DISABLED
if (SDL_GetEventState(event.type) == SDL_ENABLE) {
event.jbutton.which = joystick->instance_id;
event.jbutton.button = button;
event.jbutton.state = state;
posted = SDL_PushEvent(&event) == 1;
}
#endif /* !SDL_EVENTS_DISABLED */
return (posted);
}
int
SDL_PrivateJoystickAxis(SDL_Joystick * joystick, Uint8 axis, Sint16 value)
{
int posted;
/* Make sure we're not getting garbage or duplicate events */
if (axis >= joystick->naxes) {
return 0;
}
if (value == joystick->axes[axis]) {
return 0;
}
/* We ignore events if we don't have keyboard focus, except for centering
* events.
*/
if (SDL_PrivateJoystickShouldIgnoreEvent()) {
if ((value > joystick->axes_zero[axis] && value >= joystick->axes[axis]) ||
(value < joystick->axes_zero[axis] && value <= joystick->axes[axis])) {
return 0;
}
}
/* Update internal joystick state */
joystick->axes[axis] = value;
/* Post the event, if desired */
posted = 0;
#if !SDL_EVENTS_DISABLED
if (SDL_GetEventState(SDL_JOYAXISMOTION) == SDL_ENABLE) {
SDL_Event event;
event.type = SDL_JOYAXISMOTION;
event.jaxis.which = joystick->instance_id;
event.jaxis.axis = axis;
event.jaxis.value = value;
posted = SDL_PushEvent(&event) == 1;
}
#endif /* !SDL_EVENTS_DISABLED */
return (posted);
}
int
SDL_PrivateJoystickHat(SDL_Joystick * joystick, Uint8 hat, Uint8 value)
{
int posted;
/* Make sure we're not getting garbage or duplicate events */
if (hat >= joystick->nhats) {
return 0;
}
if (value == joystick->hats[hat]) {
return 0;
}
/* We ignore events if we don't have keyboard focus, except for centering
* events.
*/
if (SDL_PrivateJoystickShouldIgnoreEvent()) {
if (value != SDL_HAT_CENTERED) {
return 0;
}
}
/* Update internal joystick state */
joystick->hats[hat] = value;
/* Post the event, if desired */
posted = 0;
#if !SDL_EVENTS_DISABLED
if (SDL_GetEventState(SDL_JOYHATMOTION) == SDL_ENABLE) {
SDL_Event event;
event.jhat.type = SDL_JOYHATMOTION;
event.jhat.which = joystick->instance_id;
event.jhat.hat = hat;
event.jhat.value = value;
posted = SDL_PushEvent(&event) == 1;
}
#endif /* !SDL_EVENTS_DISABLED */
return (posted);
}