SDL_Finger *
SDL_GetFinger(SDL_Touch* touch,SDL_FingerID id)
{
int index = SDL_GetFingerIndexId(touch,id);
if(index < 0 || index >= touch->num_fingers)
return NULL;
return touch->fingers[index];
}
int
SDL_DelFinger(SDL_Touch* touch,SDL_FingerID fingerid)
{
int index = SDL_GetFingerIndexId(touch,fingerid);
SDL_Finger* finger = SDL_GetFinger(touch,fingerid);
if (!finger) {
return -1;
}
SDL_free(finger);
touch->num_fingers--;
touch->fingers[index] = touch->fingers[touch->num_fingers];
return 0;
}
int
SDL_AddFinger(SDL_Touch* touch,SDL_Finger *finger)
{
int index;
SDL_Finger **fingers;
//printf("Adding Finger...\n");
if (SDL_GetFingerIndexId(touch,finger->id) != -1) {
SDL_SetError("Finger ID already in use");
}
/* Add the touch to the list of touch */
if(touch->num_fingers >= touch->max_fingers){
//printf("Making room for it!\n");
fingers = (SDL_Finger **) SDL_realloc(touch->fingers,
(touch->num_fingers + 1) * sizeof(SDL_Finger *));
touch->max_fingers = touch->num_fingers+1;
if (!fingers) {
SDL_OutOfMemory();
return -1;
} else {
touch->max_fingers = touch->num_fingers+1;
touch->fingers = fingers;
}
}
index = touch->num_fingers;
//printf("Max_Fingers: %i Index: %i\n",touch->max_fingers,index);
touch->fingers[index] = (SDL_Finger *) SDL_malloc(sizeof(SDL_Finger));
if (!touch->fingers[index]) {
SDL_OutOfMemory();
return -1;
}
*(touch->fingers[index]) = *finger;
touch->num_fingers++;
return index;
}
