khanat-code-old/code/nel/include/nel/misc/input_device.h
2014-09-05 11:07:25 +02:00

84 lines
2.8 KiB
C++

// NeL - MMORPG Framework <http://dev.ryzom.com/projects/nel/>
// Copyright (C) 2010 Winch Gate Property Limited
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as
// published by the Free Software Foundation, either version 3 of the
// License, or (at your option) any later version.
//
// This program 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 Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with this program. If not, see <http://www.gnu.org/licenses/>.
#ifndef NL_INPUT_DEVICE_H
#define NL_INPUT_DEVICE_H
#include "types_nl.h"
namespace NLMISC
{
class CEventServer;
class CInputDeviceServer;
struct IInputDeviceEvent;
/**
* Base class that wrap to a device
* \author Nicolas Vizerie
* \author Nevrax France
* \date 2002
*/
struct IInputDevice
{
/** Set the buffer size for this device (the number of samples it can retains).
* This return true if the size could be set
*/
virtual bool setBufferSize(uint size) = 0;
/// Get the buffer size for this device
virtual uint getBufferSize() const = 0;
///\name Device server specifics. You usually don't want to call these
//@{
/** For device server usage :
* Called at the beginning of each events retrieval.
* If a device doesn't support buffered datas, the state changes can be directly send to the event server.
* The default does nothing.
*/
virtual void begin(CEventServer * /* server */) {}
/** For device server usage :
* Poll all events from that device, and notify them to the given device server, so that they can be sorted between devices.
* This retrieves messages, but do not process them.
*/
virtual void poll(CInputDeviceServer *dev) = 0;
/** For device server usage :
* Process an event (eventually update this device state), and translate the message to a IEventServerMessage
*/
virtual void submit(IInputDeviceEvent *deviceEvent, CEventServer *server) = 0;
/** For device server usage :
* Says that the next message is for another device, or that it is the last message that will be received.
* This allow to pack several messages in one (for example, to sum up mouse moves until a click occurs)
* The default does nothing.
* The next message can be used to get a time stamp for example. It may be NULL is no next message is available
*/
virtual void transitionOccured(CEventServer * /* server */, const IInputDeviceEvent * /* nextMessage */) {}
//@}
// dtor
virtual ~IInputDevice() {}
};
} // NLMISC
#endif // NL_INPUT_DEVICE_H
/* End of input_device.h */