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KDChartBarDiagram.h

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00001 /* -*- Mode: C++ -*-
00002    KDChart - a multi-platform charting engine
00003    */
00004 
00005 /****************************************************************************
00006  ** Copyright (C) 2005-2006 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 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 KDCHART_EXPORT BarDiagram : public AbstractCartesianDiagram
00042 {
00043     Q_OBJECT
00044 
00045     Q_DISABLE_COPY( BarDiagram )
00046     KDCHART_DECLARE_DERIVED_DIAGRAM( BarDiagram, CartesianCoordinatePlane )
00047 
00048 public:
00049     explicit BarDiagram(
00050         QWidget* parent = 0, CartesianCoordinatePlane* plane = 0 );
00051     virtual ~BarDiagram();
00052 
00053     virtual BarDiagram * clone() const;
00054 
00055     enum BarType { Normal,
00056                    Stacked,
00057                    Percent,
00058                    Rows };
00059 
00060     void setType( BarType type );
00061     BarType type() const;
00062 
00063     void setBarAttributes( const BarAttributes & a );
00064     void setBarAttributes( int column, const BarAttributes & a );
00065     void setBarAttributes( const QModelIndex & index,
00066                            const BarAttributes & a );
00067     BarAttributes barAttributes() const;
00068     BarAttributes barAttributes( int column ) const;
00069     BarAttributes barAttributes( const QModelIndex & index ) const;
00070 
00071     void setThreeDBarAttributes( const ThreeDBarAttributes & a );
00072     void setThreeDBarAttributes( int column, const ThreeDBarAttributes & a );
00073     void setThreeDBarAttributes( const QModelIndex & index,
00074                                   const ThreeDBarAttributes & a );
00075     ThreeDBarAttributes threeDBarAttributes() const;
00076     ThreeDBarAttributes threeDBarAttributes( int column ) const;
00077     ThreeDBarAttributes threeDBarAttributes( const QModelIndex & index ) const;
00078 
00079     // implement AbstractCartesianDiagram
00081     const int numberOfAbscissaSegments () const;
00083     const int numberOfOrdinateSegments () const;
00084 
00085 protected:
00086     void paint ( PaintContext* paintContext );
00087 
00088 public:
00089     void resize ( const QSizeF& area );
00090 
00091 #if 0
00092     // FIXME merge with 3DAttributes?
00093     void setThreeDimensionalBars( bool threeDBars );
00094     bool threeDimensionalBars() const;
00095 
00096     void setThreeDimensionalBarsShadowColors( bool shadow );
00097     bool threeDimensionalBarsShadowColors() const;
00098 
00099     void setThreeDimensionalBarAngle( uint angle );
00100     uint threeDimensionalBarAngle() const;
00101 
00102     void setThreeDimensionalBarDepth( double depth );
00103     double threeDimensionalBarDepth() const;
00104 
00105 #endif
00106 
00107 
00108 protected:
00109     virtual double threeDItemDepth( const QModelIndex & index ) const;
00110     virtual double threeDItemDepth( int column ) const;
00112     const QPair<QPointF, QPointF> calculateDataBoundaries() const;
00113     //void paintEvent ( QPaintEvent* );
00114     void resizeEvent ( QResizeEvent* );
00115 private:
00116     void paintBars( PaintContext* ctx, const QModelIndex& index, const QRectF& bar, double& maxDepth );
00117     void calculateValueAndGapWidths( int rowCount, int colCount,
00118                                      double groupWidth,
00119                                      double& barWidth,
00120                                      double& spaceBetweenBars,
00121                                      double& spaceBetweenGroups );
00122 }; // End of class BarDiagram
00123 
00124 }
00125 
00126 #endif // KDCHARTBARDIAGRAM_H

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