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Diffstat (limited to 'examples/scxml/trafficlight-common/trafficlight.cpp')
| -rw-r--r-- | examples/scxml/trafficlight-common/trafficlight.cpp | 149 |
1 files changed, 149 insertions, 0 deletions
diff --git a/examples/scxml/trafficlight-common/trafficlight.cpp b/examples/scxml/trafficlight-common/trafficlight.cpp new file mode 100644 index 0000000..7341c96 --- /dev/null +++ b/examples/scxml/trafficlight-common/trafficlight.cpp @@ -0,0 +1,149 @@ +/**************************************************************************** +** +** Copyright (C) 2016 The Qt Company Ltd. +** Contact: https://www.qt.io/licensing/ +** +** This file is part of the QtScxml 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 "trafficlight.h" + +#include <QtWidgets> + +class TrafficLightWidget : public QWidget +{ +public: + TrafficLightWidget(QWidget *parent = 0) + : 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::Background, 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; +}; + +TrafficLight::TrafficLight(QScxmlStateMachine *machine, QWidget *parent) + : QWidget(parent) + , m_machine(machine) +{ + QVBoxLayout *vbox = new QVBoxLayout(this); + TrafficLightWidget *widget = new TrafficLightWidget(); + vbox->addWidget(widget); + vbox->setMargin(0); + + QPushButton *button = new QPushButton; + vbox->addWidget(button); + button->setCheckable(true); + button->setText(QStringLiteral("Pause")); + connect(button, SIGNAL(toggled(bool)), this, SLOT(toggleWorking(bool))); + + Q_ASSERT(machine->init()); + + machine->connectToState(QStringLiteral("red"), + widget->redLight(), SLOT(switchLight(bool))); + machine->connectToState(QStringLiteral("redGoingGreen"), + widget->redLight(), SLOT(switchLight(bool))); + machine->connectToState(QStringLiteral("yellow"), + widget->yellowLight(), SLOT(switchLight(bool))); + machine->connectToState(QStringLiteral("blinking"), + widget->yellowLight(), SLOT(switchLight(bool))); + machine->connectToState(QStringLiteral("green"), + widget->greenLight(), SLOT(switchLight(bool))); +} + +void TrafficLight::toggleWorking(bool pause) +{ + m_machine->submitEvent(pause ? "smash" : "repair"); +} + +LightWidget::LightWidget(const QColor &color, QWidget *parent) + : QWidget(parent) + , m_color(color) + , m_on(false) +{} + +bool LightWidget::isOn() const +{ return m_on; } + +void LightWidget::setOn(bool on) +{ + if (on == m_on) + return; + m_on = on; + update(); +} + +void LightWidget::switchLight(bool onoff) +{ setOn(onoff); } + +void LightWidget::paintEvent(QPaintEvent *) +{ + if (!m_on) + return; + QPainter painter(this); + painter.setRenderHint(QPainter::Antialiasing); + painter.setBrush(m_color); + painter.drawEllipse(0, 0, width(), height()); +} |