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/* Copyright 2019 Aaron Sowry for Cendio AB
* Copyright 2020 Pierre Ossman for Cendio AB
*
* This is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This software is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this software; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,
* USA.
*/
#ifndef __GESTUREHANDLER_H__
#define __GESTUREHANDLER_H__
#include <set>
#include <map>
#include <rfb/Timer.h>
#include "GestureEvent.h"
class GestureHandler : public rfb::Timer::Callback {
public:
GestureHandler();
virtual ~GestureHandler();
void handleTouchBegin(int id, double x, double y);
void handleTouchUpdate(int id, double x, double y);
void handleTouchEnd(int id);
protected:
virtual void handleGestureEvent(const GestureEvent& event) = 0;
private:
bool hasDetectedGesture();
void handleTimeout(rfb::Timer* t) override;
void longpressTimeout();
void twoTouchTimeout();
void pushEvent(GestureEventType t);
static GestureEventGesture stateToGesture(unsigned char state);
void getPosition(double *firstX, double *firstY,
double *lastX, double *lastY);
void getAverageMovement(double *h, double *v);
void getAverageDistance(double *firstX, double *firstY,
double *lastX, double *lastY);
private:
struct GHTouch {
struct timeval started;
bool active;
double firstX;
double firstY;
double lastX;
double lastY;
int angle;
};
unsigned char state;
std::map<int, GHTouch> tracked;
std::set<int> ignored;
bool waitingRelease;
struct timeval releaseStart;
rfb::Timer longpressTimer;
rfb::Timer twoTouchTimer;
};
#endif // __GESTUREHANDLER_H__
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