KDChartPiePainter.h

/*
   KDChart - a multi-platform charting engine
   */
 
/****************************************************************************
 ** Copyright (C) 2001-2003 Klarälvdalens Datakonsult AB.  All rights reserved.
 **
 ** This file is part of the KDChart library.
 **
 ** This file may be distributed and/or modified under the terms of the
 ** GNU General Public License version 2 as published by the Free Software
 ** Foundation and appearing in the file LICENSE.GPL included in the
 ** packaging of this file.
 **
 ** Licensees holding valid commercial KDChart licenses may use this file in
 ** accordance with the KDChart Commercial License Agreement provided with
 ** the Software.
 **
 ** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
 ** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
 **
 ** See http://www.klaralvdalens-datakonsult.se/?page=products for
 **   information about KDChart Commercial License Agreements.
 **
 ** Contact info@klaralvdalens-datakonsult.se if any conditions of this
 ** licensing are not clear to you.
 **
 **********************************************************************/
#ifndef __KDCHARTPIEPAINTER_H__
#define __KDCHARTPIEPAINTER_H__
 
#include <KDChartPainter.h>
#include <KDChartTable.h>
 
class KDChartParams;
 
class KDChartPiePainter : public KDChartPainter
{
    friend class KDChartPainter;
    protected:
    KDChartPiePainter( KDChartParams* params );
    virtual ~KDChartPiePainter();
 
    virtual void paintData( TQPainter* painter, 
            KDChartTableDataBase* data,
            bool paint2nd,
            KDChartDataRegionList* regions = 0 );
    virtual void drawOnePie( TQPainter* painter, 
            KDChartTableDataBase* data,
            uint dataset, uint pie, uint chart,
            uint threeDPieHeight,
            KDChartDataRegionList* regions = 0 );
    virtual void draw3DEffect( TQPainter* painter, const TQRect& drawPosition,
            uint dataset, uint pie, uint chart,
            uint threeDPieHeight,
            bool explode,
            TQRegion* region = 0 );
    void drawStraightEffectSegment( TQPainter* painter, const TQRect& rect,
            uint dataset, uint pie, uint chart,
            int threeDHeight, int angle,
            TQRegion* region = 0 );
    void drawArcEffectSegment( TQPainter* painter, const TQRect& rect,
            uint dataset, uint pie, uint chart,
            int threeDHeight, int startAngle,
            int endAngle,
            TQRegion* region = 0 );
 
    virtual TQString fallbackLegendText( uint dataset ) const;
    virtual uint numLegendFallbackTexts( KDChartTableDataBase* data ) const;
 
    uint findPieAt( int angle );
    uint findLeftPie( uint pie );
    uint findRightPie( uint pie );
 
    TQMemArray < int > _startAngles;
    TQMemArray < int > _angleLens;
 
    TQRect _position;
    int _size;
    int _numValues; // PENDING(kalle) Move to base class
}
;
 
#endif