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/****************************************************************************
**
** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
** All rights reserved.
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** This file is part of the examples of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** Commercial Usage
** Licensees holding valid Qt Commercial licenses may use this file in
** accordance with the Qt Commercial License Agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and Nokia.
**
** 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 1.1, 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 have questions regarding the use of this file, please contact
** Nokia at qt-info@nokia.com.
** $QT_END_LICENSE$
**
****************************************************************************/
#ifndef ARROW_H
#define ARROW_H
#include <QGraphicsLineItem>
#include "diagramitem.h"
QT_BEGIN_NAMESPACE
class QGraphicsPolygonItem;
class QGraphicsLineItem;
class QGraphicsScene;
class QRectF;
class QGraphicsSceneMouseEvent;
class QPainterPath;
QT_END_NAMESPACE
//! [0]
class Arrow : public QGraphicsLineItem
{
public:
enum { Type = UserType + 4 };
Arrow(DiagramItem *startItem, DiagramItem *endItem,
QGraphicsItem *parent = 0, QGraphicsScene *scene = 0);
int type() const
{ return Type; }
QRectF boundingRect() const;
QPainterPath shape() const;
void setColor(const QColor &color)
{ myColor = color; }
DiagramItem *startItem() const
{ return myStartItem; }
DiagramItem *endItem() const
{ return myEndItem; }
public slots:
void updatePosition();
protected:
void paint(QPainter *painter, const QStyleOptionGraphicsItem *option,
QWidget *widget = 0);
private:
DiagramItem *myStartItem;
DiagramItem *myEndItem;
QColor myColor;
QPolygonF arrowHead;
};
//! [0]
#endif
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