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/*****************************************************************************
*
* grail - Multitouch Gesture Recognition Library
*
* Copyright (C) 2011-2012 Canonical Ltd.
*
* This library is free software: you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License version 3
* as published by the Free Software Foundation.
*
* This library is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranties of
* MERCHANTABILITY, SATISFACTORY QUALITY, or FITNESS FOR A PARTICULAR
* PURPOSE. See the GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this library. If not, see <http://www.gnu.org/licenses/>.
*
****************************************************************************/
#ifndef GRAIL_RECOGNIZER_H_
#define GRAIL_RECOGNIZER_H_
#include <list>
#include <map>
#include <memory>
#include <set>
#include <oif/frame.h>
#include "oif/grail.h"
#include "forward.h"
#include "subscription.h"
#define INSERT_TOUCH(touch, map) \
{ \
(map)[(touch)->id()] = (touch); \
LOG(Dbg) << "touch " << (touch)->id() << " has been added to " #map "\n"; \
}
#define ERASE_TOUCH(touch_id, map) \
{ \
LOG(Dbg) << "touch " << touch_id << " has been erased from " #map "\n"; \
(map).erase(touch_id); \
}
/* OBS: it avoids the "expensive" ToString() call when debug output is not
wanted. */
#define CLEAR_TOUCHES(map) \
{ \
if (oif::grail::Logger::instance().level() <= oif::grail::Logger::Dbg) \
if ((map).size() > 0) \
LOG(Dbg) << "touch(es) " << (map).ToString() \
<< " have been erased from " #map "\n"; \
(map).clear(); \
}
namespace oif {
namespace grail {
class Recognizer {
public:
Recognizer(UGHandle* handle, const UFDevice device, UFWindowId window);
virtual ~Recognizer();
virtual bool atomic() const = 0;
virtual void ProcessFrameEvent(const UFEvent event) = 0;
unsigned int num_subscriptions() const {return num_subscriptions_;}
UGStatus ActivateSubscription(UGSubscription* subscription);
void DeactivateSubscription(UGSubscription* subscription);
virtual void UpdateTime(uint64_t time);
void RejectOverdueGesturesAndTouches(uint64_t time);
virtual uint64_t NextTimeout();
UGStatus AcceptGesture(unsigned int id);
UGStatus RejectGesture(unsigned int id);
UGHandle* handle() const { return handle_; }
UFDevice device() const { return device_; }
UFWindowId window_id() const { return window_id_; }
float device_x_res() const { return device_x_res_; }
float device_y_res() const { return device_y_res_; }
bool device_direct() const { return device_direct_; }
Recognizer(const Recognizer&) = delete;
Recognizer& operator=(const Recognizer&) = delete;
protected:
static const uint64_t COMPOSITION_TIME; /* in milliseconds */
UGHandle* const handle_;
const UFDevice device_;
const UFWindowId window_id_;
float device_x_res_; /* Units of pixel/mm */
float device_y_res_;
bool device_direct_;
bool atomic_;
std::set<UGSubscription*> subscriptions_[5];
std::set<SharedGesture> unaccepted_gestures_;
std::set<SharedGesture> accepted_gestures_;
TouchMap free_touches_;
unsigned int num_subscriptions_;
void CheckConstructionFinished(uint64_t time);
void AcceptGesture(SharedGesture gesture);
void RejectGesture(SharedGesture gesture);
void ProcessEvent(const UFEvent& event);
};
} // namespace grail
} // namespace oif
#endif // GRAIL_RECOGNIZER_H_
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