Home · All Classes · All Functions · Overviews

arrow.h Example File
graphicsview/diagramscene/arrow.h

 /****************************************************************************
 **
 ** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
 ** All rights reserved.
 ** Contact: Nokia Corporation ([email protected])
 **
 ** 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 [email protected].
 ** $QT_END_LICENSE$
 **
 ****************************************************************************/

 #ifndef ARROW_H
 #define ARROW_H

 #include <QGraphicsLineItem>

 #include "diagramitem.h"

 class QGraphicsPolygonItem;
 class QGraphicsLineItem;
 class QGraphicsScene;
 class QRectF;
 class QGraphicsSceneMouseEvent;
 class QPainterPath;

 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;
 };

 #endif


Copyright © 2009 Nokia Corporation and/or its subsidiary(-ies) Trademarks
Qt 4.6.0