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/****************************************************************************
**
** Copyright (C) 2012 Digia Plc and/or its subsidiary(-ies).
** Contact: http://www.qt-project.org/legal
**
** This file is part of the QtGui module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and Digia. For licensing terms and
** conditions see http://qt.digia.com/licensing. For further information
** use the contact form at http://qt.digia.com/contact-us.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 2.1 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 2.1 requirements
** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Digia gives you certain additional
** rights. These rights are described in the Digia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3.0 as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL included in the
** packaging of this file. Please review the following information to
** ensure the GNU General Public License version 3.0 requirements will be
** met: http://www.gnu.org/copyleft/gpl.html.
**
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include <stdlib.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <unistd.h>
#include <fcntl.h>
#include <errno.h>
#include <qvfbhdr.h>
#include <qkbdvfb_qws.h>
#ifndef QT_NO_QWS_KEYBOARD
#ifndef QT_NO_QWS_KBD_QVFB
#include <qwindowsystem_qws.h>
#include <qsocketnotifier.h>
#include <qapplication.h>
QT_BEGIN_NAMESPACE
QVFbKeyboardHandler::QVFbKeyboardHandler(const QString &device)
: QObject()
{
terminalName = device;
if (terminalName.isEmpty())
terminalName = QLatin1String("/dev/vkdb");
kbdFD = -1;
kbdIdx = 0;
kbdBufferLen = sizeof(QVFbKeyData) * 5;
kbdBuffer = new unsigned char [kbdBufferLen];
if ((kbdFD = open(terminalName.toLatin1().constData(), O_RDONLY | O_NDELAY)) < 0) {
qWarning("Cannot open %s (%s)", terminalName.toLatin1().constData(),
strerror(errno));
} else {
// Clear pending input
char buf[2];
while (read(kbdFD, buf, 1) > 0) { }
notifier = new QSocketNotifier(kbdFD, QSocketNotifier::Read, this);
connect(notifier, SIGNAL(activated(int)),this, SLOT(readKeyboardData()));
}
}
QVFbKeyboardHandler::~QVFbKeyboardHandler()
{
if (kbdFD >= 0)
close(kbdFD);
delete [] kbdBuffer;
}
void QVFbKeyboardHandler::readKeyboardData()
{
int n;
do {
n = read(kbdFD, kbdBuffer+kbdIdx, kbdBufferLen - kbdIdx);
if (n > 0)
kbdIdx += n;
} while (n > 0);
int idx = 0;
while (kbdIdx - idx >= (int)sizeof(QVFbKeyData)) {
QVFbKeyData *kd = (QVFbKeyData *)(kbdBuffer + idx);
if (kd->unicode == 0 && kd->keycode == 0 && kd->modifiers == 0 && kd->press) {
// magic exit key
qWarning("Instructed to quit by Virtual Keyboard");
qApp->quit();
}
QWSServer::processKeyEvent(kd->unicode ? kd->unicode : 0xffff, kd->keycode, kd->modifiers, kd->press, kd->repeat);
idx += sizeof(QVFbKeyData);
}
int surplus = kbdIdx - idx;
for (int i = 0; i < surplus; i++)
kbdBuffer[i] = kbdBuffer[idx+i];
kbdIdx = surplus;
}
QT_END_NAMESPACE
#endif // QT_NO_QWS_KBD_QVFB
#endif // QT_NO_QWS_KEYBOARD
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