ReverseMapper.h

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00001 /* -*- Mode: C++ -*-
00002    KDChart - a multi-platform charting engine
00003    */
00004 
00005 /****************************************************************************
00006  ** Copyright (C) 2005-2007 Klarälvdalens Datakonsult AB.  All rights reserved.
00007  **
00008  ** This file is part of the KD Chart library.
00009  **
00010  ** This file may be distributed and/or modified under the terms of the
00011  ** GNU General Public License version 2 as published by the Free Software
00012  ** Foundation and appearing in the file LICENSE.GPL included in the
00013  ** packaging of this file.
00014  **
00015  ** Licensees holding valid commercial KD Chart licenses may use this file in
00016  ** accordance with the KD Chart Commercial License Agreement provided with
00017  ** the Software.
00018  **
00019  ** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
00020  ** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
00021  **
00022  ** See http://www.kdab.net/kdchart for
00023  **   information about KD Chart Commercial License Agreements.
00024  **
00025  ** Contact info@kdab.net if any conditions of this
00026  ** licensing are not clear to you.
00027  **
00028  **********************************************************************/
00029 
00030 #ifndef REVERSEMAPPER_H
00031 #define REVERSEMAPPER_H
00032 
00033 #include <QModelIndex>
00034 #include <QHash>
00035 
00036 class QRectF;
00037 class QGraphicsScene;
00038 class QPolygonF;
00039 
00040 namespace KDChart {
00041 
00042     class AbstractDiagram;
00043     class ChartGraphicsItem;
00044 
00049     class ReverseMapper
00050     {
00051 
00052     public:
00053         ReverseMapper();
00054         explicit ReverseMapper( AbstractDiagram* diagram );
00055 
00056         ~ReverseMapper();
00057 
00058         void setDiagram( AbstractDiagram* diagram );
00059 
00060         void clear();
00061 
00062         QModelIndexList indexesAt( const QPointF& point ) const;
00063         QModelIndexList indexesIn( const QRect& rect ) const;
00064 
00065         QPolygonF polygon( int row, int column ) const;
00066         QRectF boundingRect( int row, int column ) const;
00067 
00068         void addItem( ChartGraphicsItem* item );
00069 
00070         // convenience methods:
00071         void addPolygon( int row, int column, const QPolygonF& polygon );
00072         void addRect( int row, int column, const QRectF& rect );
00073         void addCircle( int row, int column, const QPointF& location, const QSizeF& diameter );
00074         void addLine( int row, int column, const QPointF& from, const QPointF& to );
00075 
00076     private:
00077         QGraphicsScene* m_scene;
00078         AbstractDiagram* m_diagram;
00079         QHash<QModelIndex, ChartGraphicsItem*> m_itemMap;
00080     };
00081 
00082 }
00083 
00084 #endif

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