Initial import of statemachine branch from the old kinetic repository

1 files changed, 138 insertions, 0 deletions

diff --git a/examples/dbus/remotecontrolledcar/car/car.cpp b/examples/dbus/remotecontrolledcar/car/car.cpp
new file mode 100644
index 0000000..5f3bef9
--- /dev/null
+++ b/examples/dbus/remotecontrolledcar/car/car.cpp
@@ -0,0 +1,138 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Qt Software Information (qt-info@nokia.com)
+**
+** This file is part of the examples 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 "car.h"
+#include <QtGui/QtGui>
+#include <math.h>
+
+static const double Pi = 3.14159265358979323846264338327950288419717;
+
+QRectF Car::boundingRect() const
+{
+    return QRectF(-35, -81, 70, 115);
+}
+
+Car::Car() : color(Qt::green), wheelsAngle(0), speed(0)
+{
+    startTimer(1000 / 33);
+    setFlag(QGraphicsItem::ItemIsMovable, true);
+    setFlag(QGraphicsItem::ItemIsFocusable, true);
+}
+
+void Car::accelerate()
+{
+    if (speed < 10)
+        ++speed;
+}
+
+void Car::decelerate()
+{
+    if (speed > -10)
+        --speed;
+}
+
+void Car::turnLeft()
+{
+    if (wheelsAngle > -30)
+        wheelsAngle -= 5;
+}
+
+void Car::turnRight()
+{
+    if (wheelsAngle < 30)
+       wheelsAngle += 5;
+}
+
+void Car::paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget)
+{
+    Q_UNUSED(option);
+    Q_UNUSED(widget);
+
+    painter->setBrush(Qt::gray);
+    painter->drawRect(-20, -58, 40, 2); // front axel
+    painter->drawRect(-20, 7, 40, 2); // rear axel
+
+    painter->setBrush(color);
+    painter->drawRect(-25, -79, 50, 10); // front wing
+
+    painter->drawEllipse(-25, -48, 50, 20); // side pods
+    painter->drawRect(-25, -38, 50, 35); // side pods
+    painter->drawRect(-5, 9, 10, 10); // back pod
+
+    painter->drawEllipse(-10, -81, 20, 100); // main body
+
+    painter->drawRect(-17, 19, 34, 15); // rear wing
+
+    painter->setBrush(Qt::black);
+    painter->drawPie(-5, -51, 10, 15, 0, 180 * 16);
+    painter->drawRect(-5, -44, 10, 10); // cocpit
+
+    painter->save();
+    painter->translate(-20, -58);
+    painter->rotate(wheelsAngle);
+    painter->drawRect(-10, -7, 10, 15); // front left
+    painter->restore();
+
+    painter->save();
+    painter->translate(20, -58);
+    painter->rotate(wheelsAngle);
+    painter->drawRect(0, -7, 10, 15); // front left
+    painter->restore();
+
+    painter->drawRect(-30, 0, 12, 17); // rear left
+    painter->drawRect(19, 0, 12, 17);  // rear right
+}
+
+void Car::timerEvent(QTimerEvent *event)
+{
+    Q_UNUSED(event);
+
+    const qreal axelDistance = 54;
+    qreal wheelsAngleRads = (wheelsAngle * Pi) / 180;
+    qreal turnDistance = ::cos(wheelsAngleRads) * axelDistance * 2;
+    qreal turnRateRads = wheelsAngleRads / turnDistance;  // rough estimate
+    qreal turnRate = (turnRateRads * 180) / Pi;
+    qreal rotation = speed * turnRate;
+    
+    rotate(rotation);
+    translate(0, -speed);
+    update();
+}