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Diffstat (limited to 'examples/widgets/statemachine/trafficlight/main.cpp')
| -rw-r--r-- | examples/widgets/statemachine/trafficlight/main.cpp | 200 |
1 files changed, 0 insertions, 200 deletions
diff --git a/examples/widgets/statemachine/trafficlight/main.cpp b/examples/widgets/statemachine/trafficlight/main.cpp deleted file mode 100644 index dd8bddcb37..0000000000 --- a/examples/widgets/statemachine/trafficlight/main.cpp +++ /dev/null @@ -1,200 +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 <QApplication> -#include <QFinalState> -#include <QPainter> -#include <QStateMachine> -#include <QTimer> -#include <QVBoxLayout> -#include <QWidget> - -//! [0] -class LightWidget : public QWidget -{ - Q_OBJECT - Q_PROPERTY(bool on READ isOn WRITE setOn) -public: - LightWidget(const QColor &color, QWidget *parent = nullptr) - : QWidget(parent), m_color(color), m_on(false) {} - - bool isOn() const - { return m_on; } - void setOn(bool on) - { - if (on == m_on) - return; - m_on = on; - update(); - } - -public slots: - void turnOff() { setOn(false); } - void turnOn() { setOn(true); } - -protected: - void paintEvent(QPaintEvent *) override - { - if (!m_on) - return; - QPainter painter(this); - painter.setRenderHint(QPainter::Antialiasing); - painter.setBrush(m_color); - painter.drawEllipse(0, 0, width(), height()); - } - -private: - QColor m_color; - bool m_on; -}; -//! [0] - -//! [1] -class TrafficLightWidget : public QWidget -{ -public: - TrafficLightWidget(QWidget *parent = nullptr) - : QWidget(parent) - { - QVBoxLayout *vbox = new QVBoxLayout(this); - m_red = new LightWidget(Qt::red); - vbox->addWidget(m_red); - m_yellow = new LightWidget(Qt::yellow); - vbox->addWidget(m_yellow); - m_green = new LightWidget(Qt::green); - vbox->addWidget(m_green); - QPalette pal = palette(); - pal.setColor(QPalette::Window, Qt::black); - setPalette(pal); - setAutoFillBackground(true); - } - - LightWidget *redLight() const - { return m_red; } - LightWidget *yellowLight() const - { return m_yellow; } - LightWidget *greenLight() const - { return m_green; } - -private: - LightWidget *m_red; - LightWidget *m_yellow; - LightWidget *m_green; -}; -//! [1] - -//! [2] -QState *createLightState(LightWidget *light, int duration, QState *parent = nullptr) -{ - QState *lightState = new QState(parent); - QTimer *timer = new QTimer(lightState); - timer->setInterval(duration); - timer->setSingleShot(true); - QState *timing = new QState(lightState); - QObject::connect(timing, &QAbstractState::entered, light, &LightWidget::turnOn); - QObject::connect(timing, &QAbstractState::entered, timer, QOverload<>::of(&QTimer::start)); - QObject::connect(timing, &QAbstractState::exited, light, &LightWidget::turnOff); - QFinalState *done = new QFinalState(lightState); - timing->addTransition(timer, &QTimer::timeout, done); - lightState->setInitialState(timing); - return lightState; -} -//! [2] - -//! [3] -class TrafficLight : public QWidget -{ -public: - TrafficLight(QWidget *parent = nullptr) - : QWidget(parent) - { - QVBoxLayout *vbox = new QVBoxLayout(this); - TrafficLightWidget *widget = new TrafficLightWidget; - vbox->addWidget(widget); - vbox->setContentsMargins(QMargins()); - - QStateMachine *machine = new QStateMachine(this); - QState *redGoingYellow = createLightState(widget->redLight(), 3000); - redGoingYellow->setObjectName("redGoingYellow"); - QState *yellowGoingGreen = createLightState(widget->yellowLight(), 1000); - yellowGoingGreen->setObjectName("yellowGoingGreen"); - redGoingYellow->addTransition(redGoingYellow, &QState::finished, yellowGoingGreen); - QState *greenGoingYellow = createLightState(widget->greenLight(), 3000); - greenGoingYellow->setObjectName("greenGoingYellow"); - yellowGoingGreen->addTransition(yellowGoingGreen, &QState::finished, greenGoingYellow); - QState *yellowGoingRed = createLightState(widget->yellowLight(), 1000); - yellowGoingRed->setObjectName("yellowGoingRed"); - greenGoingYellow->addTransition(greenGoingYellow, &QState::finished, yellowGoingRed); - yellowGoingRed->addTransition(yellowGoingRed, &QState::finished, redGoingYellow); - - machine->addState(redGoingYellow); - machine->addState(yellowGoingGreen); - machine->addState(greenGoingYellow); - machine->addState(yellowGoingRed); - machine->setInitialState(redGoingYellow); - machine->start(); - } -}; -//! [3] - -//! [4] -int main(int argc, char **argv) -{ - QApplication app(argc, argv); - - TrafficLight widget; - widget.resize(110, 300); - widget.show(); - - return app.exec(); -} -//! [4] - -#include "main.moc" |