SDL_Touch *
SDL_GetTouch(SDL_TouchID id)
{
int index = SDL_GetTouchIndex(id);
if (index < 0 || index >= SDL_num_touch) {
SDL_SetError("Unknown touch device");
return NULL;
}
return SDL_touchDevices[index];
}
void
SDL_DelTouch(SDL_TouchID id)
{
int i;
int index = SDL_GetTouchIndex(id);
SDL_Touch *touch = SDL_GetTouch(id);
if (!touch) {
return;
}
for (i = 0; i < touch->max_fingers; ++i) {
SDL_free(touch->fingers[i]);
}
SDL_free(touch->fingers);
SDL_free(touch);
SDL_num_touch--;
SDL_touchDevices[index] = SDL_touchDevices[SDL_num_touch];
}
int
SDL_AddTouch(SDL_TouchID touchID, const char *name)
{
SDL_Touch **touchDevices;
int index;
index = SDL_GetTouchIndex(touchID);
if (index >= 0) {
return index;
}
/* Add the touch to the list of touch */
touchDevices = (SDL_Touch **) SDL_realloc(SDL_touchDevices,
(SDL_num_touch + 1) * sizeof(*touchDevices));
if (!touchDevices) {
return SDL_OutOfMemory();
}
SDL_touchDevices = touchDevices;
index = SDL_num_touch;
SDL_touchDevices[index] = (SDL_Touch *) SDL_malloc(sizeof(*SDL_touchDevices[index]));
if (!SDL_touchDevices[index]) {
return SDL_OutOfMemory();
}
/* Added touch to list */
++SDL_num_touch;
/* we're setting the touch properties */
SDL_touchDevices[index]->id = touchID;
SDL_touchDevices[index]->num_fingers = 0;
SDL_touchDevices[index]->max_fingers = 0;
SDL_touchDevices[index]->fingers = NULL;
/* Record this touch device for gestures */
/* We could do this on the fly in the gesture code if we wanted */
SDL_GestureAddTouch(touchID);
return index;
}
void
X11_PumpEvents(_THIS)
{
SDL_VideoData *data = (SDL_VideoData *) _this->driverdata;
/* Update activity every 30 seconds to prevent screensaver */
if (_this->suspend_screensaver) {
Uint32 now = SDL_GetTicks();
if (!data->screensaver_activity ||
(int) (now - data->screensaver_activity) >= 30000) {
XResetScreenSaver(data->display);
data->screensaver_activity = now;
}
}
/* Keep processing pending events */
while (X11_Pending(data->display)) {
X11_DispatchEvent(_this);
}
#ifdef SDL_INPUT_LINUXEV
/* Process Touch events - TODO When X gets touch support, use that instead*/
int i = 0,rd;
char name[256];
struct input_event ev[64];
int size = sizeof (struct input_event);
for(i = 0;i < SDL_GetNumTouch();++i) {
SDL_Touch* touch = SDL_GetTouchIndex(i);
if(!touch) printf("Touch %i/%i DNE\n",i,SDL_GetNumTouch());
EventTouchData* data;
data = (EventTouchData*)(touch->driverdata);
if(data == NULL) {
printf("No driver data\n");
continue;
}
if(data->eventStream <= 0)
printf("Error: Couldn't open stream\n");
rd = read(data->eventStream, ev, size * 64);
//printf("Got %i/%i bytes\n",rd,size);
if(rd >= size) {
for (i = 0; i < rd / sizeof(struct input_event); i++) {
switch (ev[i].type) {
case EV_ABS:
//printf("Got position x: %i!\n",data->x);
switch (ev[i].code) {
case ABS_X:
data->x = ev[i].value;
break;
case ABS_Y:
data->y = ev[i].value;
break;
case ABS_PRESSURE:
data->pressure = ev[i].value;
if(data->pressure < 0) data->pressure = 0;
break;
case ABS_MISC:
if(ev[i].value == 0)
data->up = SDL_TRUE;
break;
}
break;
case EV_MSC:
if(ev[i].code == MSC_SERIAL)
data->finger = ev[i].value;
break;
case EV_SYN:
//printf("Id: %i\n",touch->id);
if(data->up) {
SDL_SendFingerDown(touch->id,data->finger,
SDL_FALSE,data->x,data->y,
data->pressure);
}
else if(data->x >= 0 || data->y >= 0)
SDL_SendTouchMotion(touch->id,data->finger,
SDL_FALSE,data->x,data->y,
data->pressure);
//printf("Synched: %i tx: %i, ty: %i\n",
// data->finger,data->x,data->y);
data->x = -1;
data->y = -1;
data->pressure = -1;
data->finger = 0;
data->up = SDL_FALSE;
break;
}
}
}
}
#endif
}
void
X11_PumpEvents(_THIS)
{
SDL_VideoData *data = (SDL_VideoData *) _this->driverdata;
/* Update activity every 30 seconds to prevent screensaver */
if (_this->suspend_screensaver) {
Uint32 now = SDL_GetTicks();
if (!data->screensaver_activity ||
(int) (now - data->screensaver_activity) >= 30000) {
XResetScreenSaver(data->display);
#if SDL_USE_LIBDBUS
SDL_dbus_screensaver_tickle(_this);
#endif
data->screensaver_activity = now;
}
}
/* Keep processing pending events */
while (X11_Pending(data->display)) {
X11_DispatchEvent(_this);
}
/* FIXME: Only need to do this when there are pending focus changes */
X11_HandleFocusChanges(_this);
/*Dont process evtouch events if XInput2 multitouch is supported*/
if(X11_Xinput2IsMultitouchSupported()) {
return;
}
#ifdef SDL_INPUT_LINUXEV
/* Process Touch events*/
int i = 0,rd;
struct input_event ev[64];
int size = sizeof (struct input_event);
/* !!! FIXME: clean the tabstops out of here. */
for(i = 0;i < SDL_GetNumTouch();++i) {
SDL_Touch* touch = SDL_GetTouchIndex(i);
if(!touch) printf("Touch %i/%i DNE\n",i,SDL_GetNumTouch());
EventTouchData* data;
data = (EventTouchData*)(touch->driverdata);
if(data == NULL) {
printf("No driver data\n");
continue;
}
if(data->eventStream <= 0)
printf("Error: Couldn't open stream\n");
rd = read(data->eventStream, ev, size * 64);
if(rd >= size) {
for (i = 0; i < rd / sizeof(struct input_event); i++) {
switch (ev[i].type) {
case EV_ABS:
switch (ev[i].code) {
case ABS_X:
data->x = ev[i].value;
break;
case ABS_Y:
data->y = ev[i].value;
break;
case ABS_PRESSURE:
data->pressure = ev[i].value;
if(data->pressure < 0) data->pressure = 0;
break;
case ABS_MISC:
if(ev[i].value == 0)
data->up = SDL_TRUE;
break;
}
break;
case EV_MSC:
if(ev[i].code == MSC_SERIAL)
data->finger = ev[i].value;
break;
case EV_KEY:
if(ev[i].code == BTN_TOUCH)
if(ev[i].value == 0)
data->up = SDL_TRUE;
break;
case EV_SYN:
if(!data->down) {
data->down = SDL_TRUE;
SDL_SendFingerDown(touch->id,data->finger,
data->down, data->x, data->y,
data->pressure);
}
else if(!data->up)
SDL_SendTouchMotion(touch->id,data->finger,
SDL_FALSE, data->x,data->y,
data->pressure);
else
{
data->down = SDL_FALSE;
SDL_SendFingerDown(touch->id,data->finger,
data->down, data->x,data->y,
data->pressure);
data->x = -1;
data->y = -1;
data->pressure = -1;
data->finger = 0;
data->up = SDL_FALSE;
}
break;
}
}
}
}
#endif
}
