qwt_plot_barchart.h

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/* -*- mode: C++ ; c-file-style: "stroustrup" -*- *****************************
 * 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 *d_data;
};

#endif