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/****************************************************************************
**
** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
** Contact: Qt Software Information (qt-info@nokia.com)
**
** This file is part of the QtGui module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** No Commercial Usage
** This file contains pre-release code and may not be distributed.
** You may use this file in accordance with the terms and conditions
** contained in the either Technology Preview License Agreement or the
** Beta Release License Agreement.
**
** 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, Nokia gives you certain
** additional rights. These rights are described in the Nokia Qt LGPL
** Exception version 1.0, 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.
**
** If you are unsure which license is appropriate for your use, please
** contact the sales department at qt-sales@nokia.com.
** $QT_END_LICENSE$
**
****************************************************************************/
#include "qkbd_qws.h"
#ifndef QT_NO_QWS_KEYBOARD
#include "qwindowsystem_qws.h"
#include "qscreen_qws.h"
#include "qtimer.h"
#include <stdlib.h>
QT_BEGIN_NAMESPACE
class QWSKbPrivate : public QObject
{
Q_OBJECT
public:
QWSKbPrivate(QWSKeyboardHandler *h) {
handler = h;
arTimer = new QTimer(this);
arTimer->setSingleShot(true);
connect(arTimer, SIGNAL(timeout()), SLOT(autoRepeat()));
repeatdelay = 400;
repeatperiod = 80;
}
void beginAutoRepeat(int uni, int code, Qt::KeyboardModifiers mod) {
unicode = uni;
keycode = code;
modifier = mod;
arTimer->start(repeatdelay);
}
void endAutoRepeat() {
arTimer->stop();
}
private slots:
void autoRepeat() {
handler->processKeyEvent(unicode, keycode, modifier, false, true);
handler->processKeyEvent(unicode, keycode, modifier, true, true);
arTimer->start(repeatperiod);
}
private:
QWSKeyboardHandler *handler;
int unicode;
int keycode;
Qt::KeyboardModifiers modifier;
int repeatdelay;
int repeatperiod;
QTimer *arTimer;
};
/*!
\class QWSKeyboardHandler
\ingroup qws
\brief The QWSKeyboardHandler class is a base class for keyboard
drivers in Qt for Embedded Linux.
Note that this class is only available in \l{Qt for Embedded Linux}.
\l{Qt for Embedded Linux} provides ready-made drivers for several keyboard
protocols, see the \l{Qt for Embedded Linux Character Input}{character
input} documentation for details. Custom keyboard drivers can be
implemented by subclassing the QWSKeyboardHandler class and
creating a keyboard driver plugin (derived from
QKbdDriverPlugin). The default implementation of the
QKbdDriverFactory class will automatically detect the plugin, and
load the driver into the server application at run-time using Qt's
\l{How to Create Qt Plugins}{plugin system}.
The keyboard driver receives keyboard events from the system
device and encapsulates each event with an instance of the
QWSEvent class which it then passes to the server application (the
server is responsible for propagating the event to the appropriate
client). To receive keyboard events, a QWSKeyboardHandler object
will usually create a QSocketNotifier object for the given
device. The QSocketNotifier class provides support for monitoring
activity on a file descriptor. When the socket notifier receives
data, it will call the keyboard driver's processKeyEvent()
function to send the event to the \l{Qt for Embedded Linux} server
application for relaying to clients.
QWSKeyboardHandler also provides functions to control
auto-repetion of key sequences, beginAutoRepeat() and
endAutoRepeat(), and the transformDirKey() function enabling
transformation of arrow keys according to the display orientation.
\sa QKbdDriverPlugin, QKbdDriverFactory, {Qt for Embedded Linux Character Input}
*/
/*!
Constructs a keyboard driver.
Call the QWSServer::setKeyboardHandler() function to make the
newly created keyboard driver, the primary driver. Note that the
primary driver is controlled by the system, i.e., the system will
delete it upon exit.
*/
QWSKeyboardHandler::QWSKeyboardHandler()
{
d = new QWSKbPrivate(this);
}
/*!
Destroys this keyboard driver.
Do not call this function if this driver is the primary keyboard
handler, i.e., if QWSServer::setKeyboardHandler() function has
been called passing this driver as argument. The primary keyboard
driver is deleted by the system.
*/
QWSKeyboardHandler::~QWSKeyboardHandler()
{
delete d;
}
/*!
Sends a key event to the \l{Qt for Embedded Linux} server application.
The key event is identified by its \a unicode value and the \a
keycode, \a modifiers, \a isPress and \a autoRepeat parameters.
The \a keycode parameter is the Qt keycode value as defined by the
Qt::Key enum. The \a modifiers is an OR combination of
Qt::KeyboardModifier values, indicating whether \gui
Shift/Alt/Ctrl keys are pressed. The \a isPress parameter is true
if the event is a key press event and \a autoRepeat is true if the
event is caused by an auto-repeat mechanism and not an actual key
press.
\sa beginAutoRepeat(), endAutoRepeat(), transformDirKey()
*/
void QWSKeyboardHandler::processKeyEvent(int unicode, int keycode, Qt::KeyboardModifiers modifiers,
bool isPress, bool autoRepeat)
{
qwsServer->processKeyEvent(unicode, keycode, modifiers, isPress, autoRepeat);
}
/*!
\fn int QWSKeyboardHandler::transformDirKey(int keycode)
Transforms the arrow key specified by the given \a keycode, to the
orientation of the display and returns the transformed keycode.
The \a keycode is a Qt::Key value. The values identifying arrow
keys are:
\list
\o Qt::Key_Left
\o Qt::Key_Up
\o Qt::Key_Right
\o Qt::Key_Down
\endlist
\sa processKeyEvent()
*/
int QWSKeyboardHandler::transformDirKey(int key)
{
static int dir_keyrot = -1;
if (dir_keyrot < 0) {
// get the rotation
switch (qgetenv("QWS_CURSOR_ROTATION").toInt()) {
case 90: dir_keyrot = 1; break;
case 180: dir_keyrot = 2; break;
case 270: dir_keyrot = 3; break;
default: dir_keyrot = 0; break;
}
}
int xf = qt_screen->transformOrientation() + dir_keyrot;
return (key-Qt::Key_Left+xf)%4+Qt::Key_Left;
}
/*!
\fn void QWSKeyboardHandler::beginAutoRepeat(int unicode, int keycode, Qt::KeyboardModifiers modifier)
Begins auto-repeating the specified key press; after a short delay
the key press is sent periodically until the endAutoRepeat()
function is called.
The key press is specified by its \a unicode, \a keycode and \a
modifier state.
\sa endAutoRepeat(), processKeyEvent()
*/
void QWSKeyboardHandler::beginAutoRepeat(int uni, int code, Qt::KeyboardModifiers mod)
{
d->beginAutoRepeat(uni, code, mod);
}
/*!
Stops auto-repeating a key press.
\sa beginAutoRepeat(), processKeyEvent()
*/
void QWSKeyboardHandler::endAutoRepeat()
{
d->endAutoRepeat();
}
QT_END_NAMESPACE
#include "qkbd_qws.moc"
#endif // QT_NO_QWS_KEYBOARD
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