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Diffstat (limited to 'examples/widgets/statemachine/factorial/main.cpp')
| -rw-r--r-- | examples/widgets/statemachine/factorial/main.cpp | 181 |
1 files changed, 0 insertions, 181 deletions
diff --git a/examples/widgets/statemachine/factorial/main.cpp b/examples/widgets/statemachine/factorial/main.cpp deleted file mode 100644 index e6cbdcae29..0000000000 --- a/examples/widgets/statemachine/factorial/main.cpp +++ /dev/null @@ -1,181 +0,0 @@ -/**************************************************************************** -** -** Copyright (C) 2016 The Qt Company Ltd. -** Contact: https://www.qt.io/licensing/ -** -** This file is part of the QtCore module of the Qt Toolkit. -** -** $QT_BEGIN_LICENSE:BSD$ -** 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 The Qt Company. For licensing terms -** and conditions see https://www.qt.io/terms-conditions. For further -** information use the contact form at https://www.qt.io/contact-us. -** -** BSD License Usage -** Alternatively, 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 The Qt Company Ltd 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> - -//! [0] -class Factorial : public QObject -{ - Q_OBJECT - Q_PROPERTY(int x READ x WRITE setX) - Q_PROPERTY(int fac READ fac WRITE setFac) -public: - using QObject::QObject; - - int x() const - { - return m_x; - } - - void setX(int x) - { - if (x == m_x) - return; - m_x = x; - emit xChanged(x); - } - - int fac() const - { - return m_fac; - } - - void setFac(int fac) - { - m_fac = fac; - } - -Q_SIGNALS: - void xChanged(int value); - -private: - int m_x = -1; - int m_fac = 1; -}; -//! [0] - -//! [1] -class FactorialLoopTransition : public QSignalTransition -{ -public: - FactorialLoopTransition(Factorial *fact) - : QSignalTransition(fact, &Factorial::xChanged), m_fact(fact) - {} - - bool eventTest(QEvent *e) override - { - if (!QSignalTransition::eventTest(e)) - return false; - QStateMachine::SignalEvent *se = static_cast<QStateMachine::SignalEvent*>(e); - return se->arguments().at(0).toInt() > 1; - } - - void onTransition(QEvent *e) override - { - QStateMachine::SignalEvent *se = static_cast<QStateMachine::SignalEvent*>(e); - int x = se->arguments().at(0).toInt(); - int fac = m_fact->property("fac").toInt(); - m_fact->setProperty("fac", x * fac); - m_fact->setProperty("x", x - 1); - } - -private: - Factorial *m_fact; -}; -//! [1] - -//! [2] -class FactorialDoneTransition : public QSignalTransition -{ -public: - FactorialDoneTransition(Factorial *fact) - : QSignalTransition(fact, &Factorial::xChanged), m_fact(fact) - {} - - bool eventTest(QEvent *e) override - { - if (!QSignalTransition::eventTest(e)) - return false; - QStateMachine::SignalEvent *se = static_cast<QStateMachine::SignalEvent*>(e); - return se->arguments().at(0).toInt() <= 1; - } - - void onTransition(QEvent *) override - { - qInfo() << m_fact->property("fac").toInt(); - } - -private: - Factorial *m_fact; -}; -//! [2] - -//! [3] -int main(int argc, char **argv) -{ - QCoreApplication app(argc, argv); - Factorial factorial; - QStateMachine machine; -//! [3] - -//! [4] - QState *compute = new QState(&machine); - compute->assignProperty(&factorial, "fac", 1); - compute->assignProperty(&factorial, "x", 6); - compute->addTransition(new FactorialLoopTransition(&factorial)); -//! [4] - -//! [5] - QFinalState *done = new QFinalState(&machine); - FactorialDoneTransition *doneTransition = new FactorialDoneTransition(&factorial); - doneTransition->setTargetState(done); - compute->addTransition(doneTransition); -//! [5] - -//! [6] - machine.setInitialState(compute); - QObject::connect(&machine, &QStateMachine::finished, &app, QCoreApplication::quit); - machine.start(); - - return app.exec(); -} -//! [6] - -#include "main.moc" |