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/*
* Copyright 2012 Canonical Ltd.
*
* This program is free software: you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License, as
* published by the Free Software Foundation; either version 2.1 or 3.0
* of the License.
*
* This program 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 applicable version of the GNU Lesser General Public
* License for more details.
*
* You should have received a copy of both the GNU Lesser General Public
* License along with this program. If not, see <http://www.gnu.org/licenses/>
*
* Authored by: Daniel d'Andrada <daniel.dandrada@canonical.com>
*
*/
#ifndef GEISADAPTER_H
#define GEISADAPTER_H
#include "Nux/Features.h"
#ifdef NUX_GESTURES_SUPPORT
#include <sigc++/sigc++.h>
#include <geis/geis.h>
#include <glib.h>
#include <map>
#include <memory>
#include "NuxGraphics/GestureEvent.h"
namespace nux
{
/*!
This class translates events from geis into native nux::GestureEvents
*/
class GeisAdapter : public sigc::trackable
{
public:
GeisAdapter();
~GeisAdapter();
void CreateGSource(GMainContext *context);
/*
Returns whether initialization is complete.
See also: signal init_complete()
*/
bool IsInitComplete() const {return is_init_complete_;}
/*
Initialization has finished. Subscriptions
can now be filtered and activated.
*/
sigc::signal<void> init_complete;
//! Emitted when a new GestureEvent is ready to be processed
sigc::signal<void, GestureEvent &> event_ready;
Geis GetGeisInstance() const {return geis_;}
void ProcessGeisEvents();
//! Processes the next pending Geis event, which may yield a GestureEvent
/*!
Returns true if GestureEvent was filled and false otherwise.
*/
bool ProcessNextEvent(GestureEvent *event);
private:
class Device {
public:
int id;
bool direct_touch;
};
void ProcessEventDeviceAvailable(GeisEvent event);
void ProcessEventDeviceUnavailable(GeisEvent event);
void ProcessEventClassAvailable(GeisEvent event);
void FillNuxEvent(GestureEvent &nux_event,
GeisEvent event,
EventType nux_event_type);
void FillNuxEventGestureAttributes(GestureEvent &nux_event, GeisFrame frame);
void FillNuxEventTouches(GestureEvent &nux_event, GeisTouchSet touch_set);
void SplitUpdateIntoBeginAndEnd(GestureEvent &nux_event);
Geis geis_;
GeisGestureClass class_drag_;
GeisGestureClass class_pinch_;
GeisGestureClass class_rotate_;
GeisGestureClass class_tap_;
GeisGestureClass class_touch_;
bool is_init_complete_;
/* maps a device id to its corresponding device */
std::map<int, Device> devices_;
/* Sometimes a single GeisEvent can yield two GestureEvents. When that
happens, that second GestureEvent will be temporarily held here until
it's consumed. */
std::unique_ptr<GestureEvent> pending_next_event_;
friend class GeisAdapterTest;
};
} // namespace nux
#endif // NUX_GESTURES_SUPPORT
#endif // GEISADAPTER_H
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