qt5base-lts/examples/statemachine/pingpong/main.cpp
Jason McDonald 1fdfc2abfe Update copyright year in license headers.
Change-Id: I02f2c620296fcd91d4967d58767ea33fc4e1e7dc
Reviewed-by: Rohan McGovern <rohan.mcgovern@nokia.com>
2012-01-05 06:36:56 +01:00

140 lines
3.8 KiB
C++

/****************************************************************************
**
** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies).
** All rights reserved.
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** This file is part of the QtCore module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:BSD$
** You may use this file under the terms of the BSD license as follows:
**
** "Redistribution and use in source and binary forms, with or without
** modification, are permitted provided that the following conditions are
** met:
** * Redistributions of source code must retain the above copyright
** notice, this list of conditions and the following disclaimer.
** * 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.
** * Neither the name of Nokia Corporation and its Subsidiary(-ies) nor
** the names of its contributors may 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."
** $QT_END_LICENSE$
**
****************************************************************************/
#include <QtCore>
#include <stdio.h>
//! [0]
class PingEvent : public QEvent
{
public:
PingEvent() : QEvent(QEvent::Type(QEvent::User+2))
{}
};
class PongEvent : public QEvent
{
public:
PongEvent() : QEvent(QEvent::Type(QEvent::User+3))
{}
};
//! [0]
//! [1]
class Pinger : public QState
{
public:
Pinger(QState *parent)
: QState(parent) {}
protected:
virtual void onEntry(QEvent *)
{
machine()->postEvent(new PingEvent());
fprintf(stdout, "ping?\n");
}
};
//! [1]
//! [3]
class PongTransition : public QAbstractTransition
{
public:
PongTransition() {}
protected:
virtual bool eventTest(QEvent *e) {
return (e->type() == QEvent::User+3);
}
virtual void onTransition(QEvent *)
{
machine()->postDelayedEvent(new PingEvent(), 500);
fprintf(stdout, "ping?\n");
}
};
//! [3]
//! [2]
class PingTransition : public QAbstractTransition
{
public:
PingTransition() {}
protected:
virtual bool eventTest(QEvent *e) {
return (e->type() == QEvent::User+2);
}
virtual void onTransition(QEvent *)
{
machine()->postDelayedEvent(new PongEvent(), 500);
fprintf(stdout, "pong!\n");
}
};
//! [2]
//! [4]
int main(int argc, char **argv)
{
QCoreApplication app(argc, argv);
QStateMachine machine;
QState *group = new QState(QState::ParallelStates);
group->setObjectName("group");
//! [4]
//! [5]
Pinger *pinger = new Pinger(group);
pinger->setObjectName("pinger");
pinger->addTransition(new PongTransition());
QState *ponger = new QState(group);
ponger->setObjectName("ponger");
ponger->addTransition(new PingTransition());
//! [5]
//! [6]
machine.addState(group);
machine.setInitialState(group);
machine.start();
return app.exec();
}
//! [6]