Function preprocess_finger_down

SourceX/controls/touch.cpp:120–159

}

static void preprocess_finger_down(SDL_Event *event)
{
	// front (0) or back (1) panel
	SDL_TouchID port = event->tfinger.touchId;
	// id (for multitouch)
	SDL_FingerID id = event->tfinger.fingerId;

	int x = mouse_x;
	int y = mouse_y;

	if (direct_touch) {
		x = event->tfinger.x * visible_width + x_borderwidth;
		y = event->tfinger.y * visible_height + y_borderwidth;
		dvl::OutputToLogical(&x, &y);
	}

	// make sure each finger is not reported down multiple times
	for (int i = 0; i < MAX_NUM_FINGERS; i++) {
		if (finger[port][i].id != id) {
			continue;
		}
		finger[port][i].id = NO_TOUCH;
	}

	// we need the timestamps to decide later if the user performed a short tap (click)
	// or a long tap (drag)
	// we also need the last coordinates for each finger to keep track of dragging
	for (int i = 0; i < MAX_NUM_FINGERS; i++) {
		if (finger[port][i].id != NO_TOUCH) {
			continue;
		}
		finger[port][i].id             = id;
		finger[port][i].time_last_down = event->tfinger.timestamp;
		finger[port][i].last_down_x    = event->tfinger.x;
		finger[port][i].last_down_y    = event->tfinger.y;
		finger[port][i].last_x         = x;
		finger[port][i].last_y         = y;
		break;
	}
}

static void preprocess_finger_up(SDL_Event *event)
{