qwt_plot_barchart.h

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/******************************************************************************
 * Qwt Widget Library
 * Copyright (C) 1997   Josef Wilgen
 * Copyright (C) 2002   Uwe Rathmann
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the Qwt License, Version 1.0
 *****************************************************************************/
 
#ifndef QWT_PLOT_BAR_CHART_H
#define QWT_PLOT_BAR_CHART_H
 
#include "qwt_global.h"
#include "qwt_plot_abstract_barchart.h"
 
class QwtColumnRect;
class QwtColumnSymbol;
template< typename T > class QwtSeriesData;
 
class QWT_EXPORT QwtPlotBarChart
    : public QwtPlotAbstractBarChart
    , public QwtSeriesStore< QPointF >
{
  public:
    enum LegendMode
    {
        LegendChartTitle,
 
        LegendBarTitles
    };
 
    explicit QwtPlotBarChart( const QString& title = QString() );
    explicit QwtPlotBarChart( const QwtText& title );
 
    virtual ~QwtPlotBarChart();
 
    virtual int rtti() const QWT_OVERRIDE;
 
    void setSamples( const QVector< QPointF >& );
    void setSamples( const QVector< double >& );
    void setSamples( QwtSeriesData< QPointF >* );
 
    void setSymbol( QwtColumnSymbol* );
    const QwtColumnSymbol* symbol() const;
 
    void setLegendMode( LegendMode );
    LegendMode legendMode() const;
 
    virtual void drawSeries( QPainter*,
        const QwtScaleMap& xMap, const QwtScaleMap& yMap,
        const QRectF& canvasRect, int from, int to ) const QWT_OVERRIDE;
 
    virtual QRectF boundingRect() const QWT_OVERRIDE;
 
    virtual QwtColumnSymbol* specialSymbol(
        int sampleIndex, const QPointF& ) const;
 
    virtual QwtText barTitle( int sampleIndex ) const;
 
  protected:
    virtual void drawSample( QPainter* painter,
        const QwtScaleMap& xMap, const QwtScaleMap& yMap,
        const QRectF& canvasRect, const QwtInterval& boundingInterval,
        int index, const QPointF& sample ) const;
 
    virtual void drawBar( QPainter*,
        int sampleIndex, const QPointF& sample,
        const QwtColumnRect& ) const;
 
    QwtColumnRect columnRect(
        const QwtScaleMap& xMap, const QwtScaleMap& yMap,
        const QRectF& canvasRect, const QwtInterval& boundingInterval,
        const QPointF& sample ) const;
 
    QList< QwtLegendData > legendData() const QWT_OVERRIDE;
    QwtGraphic legendIcon( int index, const QSizeF& ) const QWT_OVERRIDE;
 
  private:
    void init();
 
    class PrivateData;
    PrivateData* m_data;
};
 
#endif