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/****************************************************************************
* NxWidgets/nxwm/include/keyboard.hxx
*
* Copyright (C) 2012 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <gnutt@nuttx.org>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* 3. Neither the name NuttX, NxWidgets, nor the names of its contributors
* me be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
****************************************************************************/
#ifndef __INCLUDE_CKEYBOARD_HXX
#define __INCLUDE_CKEYBOARD_HXX
/****************************************************************************
* Included Files
****************************************************************************/
#include <nuttx/nx/nxglib.h>
#include <semaphore.h>
#include <pthread.h>
#include <nuttx/input/touchscreen.h>
#include "cnxserver.hxx"
#include "ccalibration.hxx"
/****************************************************************************
* Pre-processor Definitions
****************************************************************************/
/****************************************************************************
* Implementation Classes
****************************************************************************/
namespace NxWM
{
/**
* The CKeyboard class provides the the calibration window and obtains
* callibration data.
*/
class CKeyboard
{
private:
/**
* The state of the listener thread.
*/
enum EListenerState
{
LISTENER_NOTRUNNING = 0, /**< The listener thread has not yet been started */
LISTENER_STARTED, /**< The listener thread has been started, but is not yet running */
LISTENER_RUNNING, /**< The listener thread is running normally */
LISTENER_STOPREQUESTED, /**< The listener thread has been requested to stop */
LISTENER_TERMINATED, /**< The listener thread terminated normally */
LISTENER_FAILED /**< The listener thread terminated abnormally */
};
/**
* CKeyboard state data
*/
NXWidgets::CNxServer *m_server; /**< The current NX server */
int m_kbdFd; /**< File descriptor of the opened keyboard device */
pthread_t m_thread; /**< The listener thread ID */
volatile enum EListenerState m_state; /**< The state of the listener thread */
sem_t m_waitSem; /**< Used to synchronize with the listener thread */
/**
* The keyboard listener thread. This is the entry point of a thread that
* listeners for and dispatches keyboard events to the NX server.
*
* @param arg. The CKeyboard 'this' pointer cast to a void*.
* @return This function normally does not return but may return NULL on
* error conditions.
*/
static FAR void *listener(FAR void *arg);
public:
/**
* CKeyboard Constructor
*
* @param server. An instance of the NX server. This will be needed for
* injecting mouse data.
*/
CKeyboard(NXWidgets::CNxServer *server);
/**
* CKeyboard Destructor
*/
~CKeyboard(void);
/**
* Start the keyboard listener thread.
*
* @return True if the keyboard listener thread was correctly started.
*/
bool start(void);
};
}
#endif // __INCLUDE_CKEYBOARD_HXX
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