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KDChartLineDiagram.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 KDCHARTLINEDIAGRAM_H
00031 #define KDCHARTLINEDIAGRAM_H
00032 
00033 #include "KDChartAbstractCartesianDiagram.h"
00034 #include "KDChartLineAttributes.h"
00035 
00036 class QPainter;
00037 class QPolygonF;
00038 
00039 namespace KDChart {
00040 
00041     class ThreeDLineAttributes;
00042 
00043 class KDCHART_EXPORT LineDiagram : public AbstractCartesianDiagram
00044 {
00045     Q_OBJECT
00046 
00047     Q_DISABLE_COPY( LineDiagram )
00048 //    KDCHART_DECLARE_PRIVATE_DERIVED_PARENT( LineDiagram, CartesianCoordinatePlane * )
00049     KDCHART_DECLARE_DERIVED_DIAGRAM( LineDiagram, CartesianCoordinatePlane )
00050 
00051 public:
00052     LineDiagram( QWidget* parent = 0, CartesianCoordinatePlane* plane = 0 );
00053     virtual ~LineDiagram();
00054 
00055     virtual LineDiagram * clone() const;
00056 
00060     bool compare( const LineDiagram* other )const;
00061 
00062     enum LineType {
00063         Normal =  0,
00064         Stacked = 1,
00065         Percent = 2
00066     };
00067 
00068 
00069     void setType( const LineType type );
00070     LineType type() const;
00071 
00072     void setLineAttributes( const LineAttributes & a );
00073     void setLineAttributes( int column, const LineAttributes & a );
00074     void setLineAttributes( const QModelIndex & index, const LineAttributes & a );
00075     void resetLineAttributes( int column );
00076     void resetLineAttributes( const QModelIndex & index );
00077     LineAttributes lineAttributes() const;
00078     LineAttributes lineAttributes( int column ) const;
00079     LineAttributes lineAttributes( const QModelIndex & index ) const;
00080 
00081     void setThreeDLineAttributes( const ThreeDLineAttributes & a );
00082     void setThreeDLineAttributes( int column, const ThreeDLineAttributes & a );
00083     void setThreeDLineAttributes( const QModelIndex & index,
00084                                   const ThreeDLineAttributes & a );
00085 
00086     //FIXME(khz): big TODO(khz): add a lot of reset...Attributes() methods to all
00087     // appropriate places, for 2.1 (that is: after we have release 2.0.2)  :-)
00088 
00089     ThreeDLineAttributes threeDLineAttributes() const;
00090     ThreeDLineAttributes threeDLineAttributes( int column ) const;
00091     ThreeDLineAttributes threeDLineAttributes( const QModelIndex & index ) const;
00092 
00093     // implement AbstractCartesianDiagram
00094     /* reimpl */
00095     const int numberOfAbscissaSegments () const;
00096     /* reimpl */
00097     const int numberOfOrdinateSegments () const;
00098 
00099 protected:
00100     void paint ( PaintContext* paintContext );
00101 
00102 public:
00103     void resize ( const QSizeF& area );
00104 
00105 protected:
00106     double valueForCellTesting( int row, int column,
00107                                 bool& bOK,
00108                                 bool showHiddenCellsAsInvalid = false ) const;
00109     LineAttributes::MissingValuesPolicy getCellValues(
00110         int row, int column,
00111         bool shiftCountedXValuesByHalfSection,
00112         double& valueX, double& valueY ) const;
00113 
00114     virtual double threeDItemDepth( const QModelIndex & index ) const;
00115     virtual double threeDItemDepth( int column ) const;
00117     virtual const QPair<QPointF, QPointF> calculateDataBoundaries() const;
00118     void paintEvent ( QPaintEvent* );
00119     void resizeEvent ( QResizeEvent* );
00120 
00121 private:
00122     void paintPolyline( PaintContext* ctx,
00123                         const QBrush& brush, const QPen& pen,
00124                         const QPolygonF& points ) const;
00125     const QPointF project( QPointF point, QPointF maxLimits, double z, const QModelIndex& index ) const;
00126     void paintThreeDLines( PaintContext* painter,const QModelIndex& index,
00127                            const QPointF& from, const QPointF& to, const double depth );
00128     void paintAreas( PaintContext* painter, const QModelIndex& index,
00129                      const QPolygonF& area, const uint transparency );
00130     void paintAreas( PaintContext* ctx, const QModelIndex& index,
00131                      const QList<QPolygonF>& areas, const uint transparency );
00132 }; // End of class KDChartLineDiagram
00133 
00134 }
00135 
00136 #endif // KDCHARTLINEDIAGRAM_H

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