# 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