qt-everywhere-src-5.14.1/qtbase/examples/widgets/graphicsview/dragdroprobot/robot.cpp - orbit - Git at Google

 /****************************************************************************
 **
 ** Copyright (C) 2016 The Qt Company Ltd.
 ** Contact: https://www.qt.io/licensing/
 **
 ** This file is part of the examples 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 "robot.h"

 #include <QGraphicsSceneDragDropEvent>
 #include <QMimeData>
 #include <QPainter>
 #include <QParallelAnimationGroup>
 #include <QPropertyAnimation>

 //! [0]
 RobotPart::RobotPart(QGraphicsItem *parent)
     : QGraphicsObject(parent), color(Qt::lightGray)
 {
     setAcceptDrops(true);
 }
 //! [0]

 //! [1]
 void RobotPart::dragEnterEvent(QGraphicsSceneDragDropEvent *event)
 {
     if (event->mimeData()->hasColor()) {
         event->setAccepted(true);
         dragOver = true;
         update();
     } else {
         event->setAccepted(false);
     }
 }
 //! [1]

 //! [2]
 void RobotPart::dragLeaveEvent(QGraphicsSceneDragDropEvent *event)
 {
     Q_UNUSED(event);
     dragOver = false;
     update();
 }
 //! [2]

 //! [3]
 void RobotPart::dropEvent(QGraphicsSceneDragDropEvent *event)
 {
     dragOver = false;
     if (event->mimeData()->hasColor())
         color = qvariant_cast<QColor>(event->mimeData()->colorData());
     update();
 }
 //! [3]

 //! [4]
 RobotHead::RobotHead(QGraphicsItem *parent)
     : RobotPart(parent)
 {
 }
 //! [4]

 //! [5]
 QRectF RobotHead::boundingRect() const
 {
     return QRectF(-15, -50, 30, 50);
 }
 //! [5]

 //! [6]
 void RobotHead::paint(QPainter *painter,
            const QStyleOptionGraphicsItem *option, QWidget *widget)
 {
     Q_UNUSED(option);
     Q_UNUSED(widget);
     if (pixmap.isNull()) {
         painter->setBrush(dragOver ? color.lighter(130) : color);
         painter->drawRoundedRect(-10, -30, 20, 30, 25, 25, Qt::RelativeSize);
         painter->setBrush(Qt::white);
         painter->drawEllipse(-7, -3 - 20, 7, 7);
         painter->drawEllipse(0, -3 - 20, 7, 7);
         painter->setBrush(Qt::black);
         painter->drawEllipse(-5, -1 - 20, 2, 2);
         painter->drawEllipse(2, -1 - 20, 2, 2);
         painter->setPen(QPen(Qt::black, 2));
         painter->setBrush(Qt::NoBrush);
         painter->drawArc(-6, -2 - 20, 12, 15, 190 * 16, 160 * 16);
     } else {
         painter->scale(.2272, .2824);
         painter->drawPixmap(QPointF(-15 * 4.4, -50 * 3.54), pixmap);
     }
 }
 //! [6]

 //! [7]
 void RobotHead::dragEnterEvent(QGraphicsSceneDragDropEvent *event)
 {
     if (event->mimeData()->hasImage()) {
         event->setAccepted(true);
         dragOver = true;
         update();
     } else {
         RobotPart::dragEnterEvent(event);
     }
 }
 //! [7]

 //! [8]
 void RobotHead::dropEvent(QGraphicsSceneDragDropEvent *event)
 {
     if (event->mimeData()->hasImage()) {
         dragOver = false;
         pixmap = qvariant_cast<QPixmap>(event->mimeData()->imageData());
         update();
     } else {
         RobotPart::dropEvent(event);
     }
 }
 //! [8]

 QRectF RobotTorso::boundingRect() const
 {
     return QRectF(-30, -20, 60, 60);
 }

 void RobotTorso::paint(QPainter *painter,
            const QStyleOptionGraphicsItem *option, QWidget *widget)
 {
     Q_UNUSED(option);
     Q_UNUSED(widget);

     painter->setBrush(dragOver ? color.lighter(130) : color);
     painter->drawRoundedRect(-20, -20, 40, 60, 25, 25, Qt::RelativeSize);
     painter->drawEllipse(-25, -20, 20, 20);
     painter->drawEllipse(5, -20, 20, 20);
     painter->drawEllipse(-20, 22, 20, 20);
     painter->drawEllipse(0, 22, 20, 20);
 }

 RobotLimb::RobotLimb(QGraphicsItem *parent)
     : RobotPart(parent)
 {
 }

 QRectF RobotLimb::boundingRect() const
 {
     return QRectF(-5, -5, 40, 10);
 }

 void RobotLimb::paint(QPainter *painter,
            const QStyleOptionGraphicsItem *option, QWidget *widget)
 {
     Q_UNUSED(option);
     Q_UNUSED(widget);

     painter->setBrush(dragOver ? color.lighter(130) : color);
     painter->drawRoundedRect(boundingRect(), 50, 50, Qt::RelativeSize);
     painter->drawEllipse(-5, -5, 10, 10);
 }

 //! [10]
 Robot::Robot(QGraphicsItem *parent)
     : RobotPart(parent)
 {
     setFlag(ItemHasNoContents);

     QGraphicsObject *torsoItem = new RobotTorso(this);
     QGraphicsObject *headItem = new RobotHead(torsoItem);
     QGraphicsObject *upperLeftArmItem = new RobotLimb(torsoItem);
     QGraphicsObject *lowerLeftArmItem = new RobotLimb(upperLeftArmItem);
     QGraphicsObject *upperRightArmItem = new RobotLimb(torsoItem);
     QGraphicsObject *lowerRightArmItem = new RobotLimb(upperRightArmItem);
     QGraphicsObject *upperRightLegItem = new RobotLimb(torsoItem);
     QGraphicsObject *lowerRightLegItem = new RobotLimb(upperRightLegItem);
     QGraphicsObject *upperLeftLegItem = new RobotLimb(torsoItem);
     QGraphicsObject *lowerLeftLegItem = new RobotLimb(upperLeftLegItem);
 //! [10]

 //! [11]
     headItem->setPos(0, -18);
     upperLeftArmItem->setPos(-15, -10);
     lowerLeftArmItem->setPos(30, 0);
     upperRightArmItem->setPos(15, -10);
     lowerRightArmItem->setPos(30, 0);
     upperRightLegItem->setPos(10, 32);
     lowerRightLegItem->setPos(30, 0);
     upperLeftLegItem->setPos(-10, 32);
     lowerLeftLegItem->setPos(30, 0);
 //! [11]

 //! [12]
     QParallelAnimationGroup *animation = new QParallelAnimationGroup(this);

     QPropertyAnimation *headAnimation = new QPropertyAnimation(headItem, "rotation");
     headAnimation->setStartValue(20);
     headAnimation->setEndValue(-20);
     QPropertyAnimation *headScaleAnimation = new QPropertyAnimation(headItem, "scale");
     headScaleAnimation->setEndValue(1.1);
     animation->addAnimation(headAnimation);
     animation->addAnimation(headScaleAnimation);
 //! [12]

     QPropertyAnimation *upperLeftArmAnimation = new QPropertyAnimation(upperLeftArmItem, "rotation");
     upperLeftArmAnimation->setStartValue(190);
     upperLeftArmAnimation->setEndValue(180);
     animation->addAnimation(upperLeftArmAnimation);

     QPropertyAnimation *lowerLeftArmAnimation = new QPropertyAnimation(lowerLeftArmItem, "rotation");
     lowerLeftArmAnimation->setStartValue(50);
     lowerLeftArmAnimation->setEndValue(10);
     animation->addAnimation(lowerLeftArmAnimation);

     QPropertyAnimation *upperRightArmAnimation = new QPropertyAnimation(upperRightArmItem, "rotation");
     upperRightArmAnimation->setStartValue(300);
     upperRightArmAnimation->setEndValue(310);
     animation->addAnimation(upperRightArmAnimation);

     QPropertyAnimation *lowerRightArmAnimation = new QPropertyAnimation(lowerRightArmItem, "rotation");
     lowerRightArmAnimation->setStartValue(0);
     lowerRightArmAnimation->setEndValue(-70);
     animation->addAnimation(lowerRightArmAnimation);

     QPropertyAnimation *upperLeftLegAnimation = new QPropertyAnimation(upperLeftLegItem, "rotation");
     upperLeftLegAnimation->setStartValue(150);
     upperLeftLegAnimation->setEndValue(80);
     animation->addAnimation(upperLeftLegAnimation);

     QPropertyAnimation *lowerLeftLegAnimation = new QPropertyAnimation(lowerLeftLegItem, "rotation");
     lowerLeftLegAnimation->setStartValue(70);
     lowerLeftLegAnimation->setEndValue(10);
     animation->addAnimation(lowerLeftLegAnimation);

     QPropertyAnimation *upperRightLegAnimation = new QPropertyAnimation(upperRightLegItem, "rotation");
     upperRightLegAnimation->setStartValue(40);
     upperRightLegAnimation->setEndValue(120);
     animation->addAnimation(upperRightLegAnimation);

     QPropertyAnimation *lowerRightLegAnimation = new QPropertyAnimation(lowerRightLegItem, "rotation");
     lowerRightLegAnimation->setStartValue(10);
     lowerRightLegAnimation->setEndValue(50);
     animation->addAnimation(lowerRightLegAnimation);

     QPropertyAnimation *torsoAnimation = new QPropertyAnimation(torsoItem, "rotation");
     torsoAnimation->setStartValue(5);
     torsoAnimation->setEndValue(-20);
     animation->addAnimation(torsoAnimation);

 //! [13]
     for (int i = 0; i < animation->animationCount(); ++i) {
         QPropertyAnimation *anim = qobject_cast<QPropertyAnimation *>(animation->animationAt(i));
         anim->setEasingCurve(QEasingCurve::SineCurve);
         anim->setDuration(2000);
     }

     animation->setLoopCount(-1);
     animation->start();
 //! [13]
 }

 //! [9]
 QRectF Robot::boundingRect() const
 {
     return QRectF();
 }

 void Robot::paint(QPainter *painter,
                   const QStyleOptionGraphicsItem *option, QWidget *widget)
 {
     Q_UNUSED(painter);
     Q_UNUSED(option);
     Q_UNUSED(widget);
 }
 //! [9]
	/****************************************************************************
	**
	** Copyright (C) 2016 The Qt Company Ltd.
	** Contact: https://www.qt.io/licensing/
	**
	** This file is part of the examples 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 "robot.h"

	#include <QGraphicsSceneDragDropEvent>
	#include <QMimeData>
	#include <QPainter>
	#include <QParallelAnimationGroup>
	#include <QPropertyAnimation>

	//! [0]
	RobotPart::RobotPart(QGraphicsItem *parent)
	: QGraphicsObject(parent), color(Qt::lightGray)
	{
	setAcceptDrops(true);
	}
	//! [0]

	//! [1]
	void RobotPart::dragEnterEvent(QGraphicsSceneDragDropEvent *event)
	{
	if (event->mimeData()->hasColor()) {
	event->setAccepted(true);
	dragOver = true;
	update();
	} else {
	event->setAccepted(false);
	}
	}
	//! [1]

	//! [2]
	void RobotPart::dragLeaveEvent(QGraphicsSceneDragDropEvent *event)
	{
	Q_UNUSED(event);
	dragOver = false;
	update();
	}
	//! [2]

	//! [3]
	void RobotPart::dropEvent(QGraphicsSceneDragDropEvent *event)
	{
	dragOver = false;
	if (event->mimeData()->hasColor())
	color = qvariant_cast<QColor>(event->mimeData()->colorData());
	update();
	}
	//! [3]

	//! [4]
	RobotHead::RobotHead(QGraphicsItem *parent)
	: RobotPart(parent)
	{
	}
	//! [4]

	//! [5]
	QRectF RobotHead::boundingRect() const
	{
	return QRectF(-15, -50, 30, 50);
	}
	//! [5]

	//! [6]
	void RobotHead::paint(QPainter *painter,
	const QStyleOptionGraphicsItem option, QWidget widget)
	{
	Q_UNUSED(option);
	Q_UNUSED(widget);
	if (pixmap.isNull()) {
	painter->setBrush(dragOver ? color.lighter(130) : color);
	painter->drawRoundedRect(-10, -30, 20, 30, 25, 25, Qt::RelativeSize);
	painter->setBrush(Qt::white);
	painter->drawEllipse(-7, -3 - 20, 7, 7);
	painter->drawEllipse(0, -3 - 20, 7, 7);
	painter->setBrush(Qt::black);
	painter->drawEllipse(-5, -1 - 20, 2, 2);
	painter->drawEllipse(2, -1 - 20, 2, 2);
	painter->setPen(QPen(Qt::black, 2));
	painter->setBrush(Qt::NoBrush);
	painter->drawArc(-6, -2 - 20, 12, 15, 190 * 16, 160 * 16);
	} else {
	painter->scale(.2272, .2824);
	painter->drawPixmap(QPointF(-15 * 4.4, -50 * 3.54), pixmap);
	}
	}
	//! [6]

	//! [7]
	void RobotHead::dragEnterEvent(QGraphicsSceneDragDropEvent *event)
	{
	if (event->mimeData()->hasImage()) {
	event->setAccepted(true);
	dragOver = true;
	update();
	} else {
	RobotPart::dragEnterEvent(event);
	}
	}
	//! [7]

	//! [8]
	void RobotHead::dropEvent(QGraphicsSceneDragDropEvent *event)
	{
	if (event->mimeData()->hasImage()) {
	dragOver = false;
	pixmap = qvariant_cast<QPixmap>(event->mimeData()->imageData());
	update();
	} else {
	RobotPart::dropEvent(event);
	}
	}
	//! [8]

	QRectF RobotTorso::boundingRect() const
	{
	return QRectF(-30, -20, 60, 60);
	}

	void RobotTorso::paint(QPainter *painter,
	const QStyleOptionGraphicsItem option, QWidget widget)
	{
	Q_UNUSED(option);
	Q_UNUSED(widget);

	painter->setBrush(dragOver ? color.lighter(130) : color);
	painter->drawRoundedRect(-20, -20, 40, 60, 25, 25, Qt::RelativeSize);
	painter->drawEllipse(-25, -20, 20, 20);
	painter->drawEllipse(5, -20, 20, 20);
	painter->drawEllipse(-20, 22, 20, 20);
	painter->drawEllipse(0, 22, 20, 20);
	}

	RobotLimb::RobotLimb(QGraphicsItem *parent)
	: RobotPart(parent)
	{
	}

	QRectF RobotLimb::boundingRect() const
	{
	return QRectF(-5, -5, 40, 10);
	}

	void RobotLimb::paint(QPainter *painter,
	const QStyleOptionGraphicsItem option, QWidget widget)
	{
	Q_UNUSED(option);
	Q_UNUSED(widget);

	painter->setBrush(dragOver ? color.lighter(130) : color);
	painter->drawRoundedRect(boundingRect(), 50, 50, Qt::RelativeSize);
	painter->drawEllipse(-5, -5, 10, 10);
	}

	//! [10]
	Robot::Robot(QGraphicsItem *parent)
	: RobotPart(parent)
	{
	setFlag(ItemHasNoContents);

	QGraphicsObject *torsoItem = new RobotTorso(this);
	QGraphicsObject *headItem = new RobotHead(torsoItem);
	QGraphicsObject *upperLeftArmItem = new RobotLimb(torsoItem);
	QGraphicsObject *lowerLeftArmItem = new RobotLimb(upperLeftArmItem);
	QGraphicsObject *upperRightArmItem = new RobotLimb(torsoItem);
	QGraphicsObject *lowerRightArmItem = new RobotLimb(upperRightArmItem);
	QGraphicsObject *upperRightLegItem = new RobotLimb(torsoItem);
	QGraphicsObject *lowerRightLegItem = new RobotLimb(upperRightLegItem);
	QGraphicsObject *upperLeftLegItem = new RobotLimb(torsoItem);
	QGraphicsObject *lowerLeftLegItem = new RobotLimb(upperLeftLegItem);
	//! [10]

	//! [11]
	headItem->setPos(0, -18);
	upperLeftArmItem->setPos(-15, -10);
	lowerLeftArmItem->setPos(30, 0);
	upperRightArmItem->setPos(15, -10);
	lowerRightArmItem->setPos(30, 0);
	upperRightLegItem->setPos(10, 32);
	lowerRightLegItem->setPos(30, 0);
	upperLeftLegItem->setPos(-10, 32);
	lowerLeftLegItem->setPos(30, 0);
	//! [11]

	//! [12]
	QParallelAnimationGroup *animation = new QParallelAnimationGroup(this);

	QPropertyAnimation *headAnimation = new QPropertyAnimation(headItem, "rotation");
	headAnimation->setStartValue(20);
	headAnimation->setEndValue(-20);
	QPropertyAnimation *headScaleAnimation = new QPropertyAnimation(headItem, "scale");
	headScaleAnimation->setEndValue(1.1);
	animation->addAnimation(headAnimation);
	animation->addAnimation(headScaleAnimation);
	//! [12]

	QPropertyAnimation *upperLeftArmAnimation = new QPropertyAnimation(upperLeftArmItem, "rotation");
	upperLeftArmAnimation->setStartValue(190);
	upperLeftArmAnimation->setEndValue(180);
	animation->addAnimation(upperLeftArmAnimation);

	QPropertyAnimation *lowerLeftArmAnimation = new QPropertyAnimation(lowerLeftArmItem, "rotation");
	lowerLeftArmAnimation->setStartValue(50);
	lowerLeftArmAnimation->setEndValue(10);
	animation->addAnimation(lowerLeftArmAnimation);

	QPropertyAnimation *upperRightArmAnimation = new QPropertyAnimation(upperRightArmItem, "rotation");
	upperRightArmAnimation->setStartValue(300);
	upperRightArmAnimation->setEndValue(310);
	animation->addAnimation(upperRightArmAnimation);

	QPropertyAnimation *lowerRightArmAnimation = new QPropertyAnimation(lowerRightArmItem, "rotation");
	lowerRightArmAnimation->setStartValue(0);
	lowerRightArmAnimation->setEndValue(-70);
	animation->addAnimation(lowerRightArmAnimation);

	QPropertyAnimation *upperLeftLegAnimation = new QPropertyAnimation(upperLeftLegItem, "rotation");
	upperLeftLegAnimation->setStartValue(150);
	upperLeftLegAnimation->setEndValue(80);
	animation->addAnimation(upperLeftLegAnimation);

	QPropertyAnimation *lowerLeftLegAnimation = new QPropertyAnimation(lowerLeftLegItem, "rotation");
	lowerLeftLegAnimation->setStartValue(70);
	lowerLeftLegAnimation->setEndValue(10);
	animation->addAnimation(lowerLeftLegAnimation);

	QPropertyAnimation *upperRightLegAnimation = new QPropertyAnimation(upperRightLegItem, "rotation");
	upperRightLegAnimation->setStartValue(40);
	upperRightLegAnimation->setEndValue(120);
	animation->addAnimation(upperRightLegAnimation);

	QPropertyAnimation *lowerRightLegAnimation = new QPropertyAnimation(lowerRightLegItem, "rotation");
	lowerRightLegAnimation->setStartValue(10);
	lowerRightLegAnimation->setEndValue(50);
	animation->addAnimation(lowerRightLegAnimation);

	QPropertyAnimation *torsoAnimation = new QPropertyAnimation(torsoItem, "rotation");
	torsoAnimation->setStartValue(5);
	torsoAnimation->setEndValue(-20);
	animation->addAnimation(torsoAnimation);

	//! [13]
	for (int i = 0; i < animation->animationCount(); ++i) {
	QPropertyAnimation anim = qobject_cast<QPropertyAnimation >(animation->animationAt(i));
	anim->setEasingCurve(QEasingCurve::SineCurve);
	anim->setDuration(2000);
	}

	animation->setLoopCount(-1);
	animation->start();
	//! [13]
	}

	//! [9]
	QRectF Robot::boundingRect() const
	{
	return QRectF();
	}

	void Robot::paint(QPainter *painter,
	const QStyleOptionGraphicsItem option, QWidget widget)
	{
	Q_UNUSED(painter);
	Q_UNUSED(option);
	Q_UNUSED(widget);
	}
	//! [9]