KDChartBarDiagram.h

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00001 /* -*- Mode: C++ -*-
00002    KDChart - a multi-platform charting engine
00003    */
00004 
00005 /****************************************************************************
00006  ** Copyright (C) 2005-2007 Klaralvdalens 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 KDCHARTBARDIAGRAM_H
00031 #define KDCHARTBARDIAGRAM_H
00032 
00033 #include "KDChartAbstractCartesianDiagram.h"
00034 #include "KDChartBarAttributes.h"
00035 //#include "KDChartThreeDBarAttributes.h"
00036 
00037 class QPainter;
00038 
00039 namespace KDChart {
00040 
00041     class ThreeDBarAttributes;
00042 
00048 class KDCHART_EXPORT BarDiagram : public AbstractCartesianDiagram
00049 {
00050     Q_OBJECT
00051 
00052     Q_DISABLE_COPY( BarDiagram )
00053 
00054     KDCHART_DECLARE_DERIVED_DIAGRAM( BarDiagram, CartesianCoordinatePlane )
00055 
00056 public:
00057     class BarDiagramType;
00058     friend class BarDiagramType;
00059 
00060     explicit BarDiagram(
00061         QWidget* parent = 0, CartesianCoordinatePlane* plane = 0 );
00062     virtual ~BarDiagram();
00063 
00064     virtual BarDiagram * clone() const;
00068     bool compare( const BarDiagram* other )const;
00069 
00070     enum BarType { Normal,
00071                    Stacked,
00072                    Percent,
00073                    Rows };
00074 
00075     void setType( const BarType type );
00076     BarType type() const;
00077 
00078     void setBarAttributes( const BarAttributes & a );
00079     void setBarAttributes( int column, const BarAttributes & a );
00080     void setBarAttributes( const QModelIndex & index, const BarAttributes & a );
00081 
00082     BarAttributes barAttributes() const;
00083     BarAttributes barAttributes( int column ) const;
00084     BarAttributes barAttributes( const QModelIndex & index ) const;
00085 
00086     void setThreeDBarAttributes( const ThreeDBarAttributes & a );
00087     void setThreeDBarAttributes( int column, const ThreeDBarAttributes & a );
00088     void setThreeDBarAttributes( const QModelIndex & index,
00089                                   const ThreeDBarAttributes & a );
00090     ThreeDBarAttributes threeDBarAttributes() const;
00091     ThreeDBarAttributes threeDBarAttributes( int column ) const;
00092     ThreeDBarAttributes threeDBarAttributes( const QModelIndex & index ) const;
00093 
00094     // implement AbstractCartesianDiagram
00096     const int numberOfAbscissaSegments () const;
00098     const int numberOfOrdinateSegments () const;
00099 
00100 protected:
00101     void paint ( PaintContext* paintContext );
00102 
00103 public:
00104     void resize ( const QSizeF& area );
00105 
00106 #if 0
00107     // FIXME merge with 3DAttributes?
00108     void setThreeDimensionalBars( bool threeDBars );
00109     bool threeDimensionalBars() const;
00110 
00111     void setThreeDimensionalBarsShadowColors( bool shadow );
00112     bool threeDimensionalBarsShadowColors() const;
00113 
00114     void setThreeDimensionalBarAngle( uint angle );
00115     uint threeDimensionalBarAngle() const;
00116 
00117     void setThreeDimensionalBarDepth( double depth );
00118     double threeDimensionalBarDepth() const;
00119 
00120 #endif
00121 
00122 
00123 protected:
00124     virtual double threeDItemDepth( const QModelIndex & index ) const;
00125     virtual double threeDItemDepth( int column ) const;
00127     const QPair<QPointF, QPointF> calculateDataBoundaries() const;
00128     void paintEvent ( QPaintEvent* );
00129     void resizeEvent ( QResizeEvent* );
00130 private:
00131 
00132     /*
00133     void paintBars( PaintContext* ctx, const QModelIndex& index, const QRectF& bar, double& maxDepth );
00134     */
00135     void calculateValueAndGapWidths( int rowCount, int colCount,
00136                                      double groupWidth,
00137                                      double& barWidth,
00138                                      double& spaceBetweenBars,
00139                                      double& spaceBetweenGroups );
00140 }; // End of class BarDiagram
00141 
00142 }
00143 
00144 #endif // KDCHARTBARDIAGRAM_H

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