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128 lines
3.9 KiB
C++
128 lines
3.9 KiB
C++
/* -*- mode: C++ ; c-file-style: "stroustrup" -*- *****************************
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* Qwt Widget Library
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* Copyright (C) 1997 Josef Wilgen
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* Copyright (C) 2002 Uwe Rathmann
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the Qwt License, Version 1.0
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*****************************************************************************/
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#ifndef QWT_PLOT_MULTI_BAR_CHART_H
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#define QWT_PLOT_MULTI_BAR_CHART_H
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#include "qwt_global.h"
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#include "qwt_plot_abstract_barchart.h"
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#include "qwt_series_data.h"
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class QwtColumnRect;
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class QwtColumnSymbol;
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/*!
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\brief QwtPlotMultiBarChart displays a series of a samples that consist
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each of a set of values.
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Each value is displayed as a bar, the bars of each set can be organized
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side by side or accumulated.
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Each bar of a set is rendered by a QwtColumnSymbol, that is set by setSymbol().
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The bars of different sets use the same symbols. Exceptions are possible
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by overloading specialSymbol() or overloading drawBar().
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Depending on its orientation() the bars are displayed horizontally
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or vertically. The bars cover the interval between the baseline()
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and the value.
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In opposite to most other plot items, QwtPlotMultiBarChart returns more
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than one entry for the legend - one for each symbol.
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\sa QwtPlotBarChart, QwtPlotHistogram
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QwtPlotSeriesItem::orientation(), QwtPlotAbstractBarChart::baseline()
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*/
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class QWT_EXPORT QwtPlotMultiBarChart:
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public QwtPlotAbstractBarChart, public QwtSeriesStore<QwtSetSample>
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{
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public:
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/*!
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\brief Chart styles.
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The default setting is QwtPlotMultiBarChart::Grouped.
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\sa setStyle(), style()
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*/
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enum ChartStyle
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{
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//! The bars of a set are displayed side by side
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Grouped,
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/*!
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The bars are displayed on top of each other accumulating
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to a single bar. All values of a set need to have the same
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sign.
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*/
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Stacked
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};
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explicit QwtPlotMultiBarChart( const QString &title = QString() );
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explicit QwtPlotMultiBarChart( const QwtText &title );
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virtual ~QwtPlotMultiBarChart();
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virtual int rtti() const;
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void setBarTitles( const QList<QwtText> & );
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QList<QwtText> barTitles() const;
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void setSamples( const QVector<QwtSetSample> & );
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void setSamples( const QVector< QVector<double> > & );
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void setSamples( QwtSeriesData<QwtSetSample> * );
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void setStyle( ChartStyle style );
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ChartStyle style() const;
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void setSymbol( int valueIndex, QwtColumnSymbol * );
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const QwtColumnSymbol *symbol( int valueIndex ) const;
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void resetSymbolMap();
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virtual void drawSeries( QPainter *painter,
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const QwtScaleMap &xMap, const QwtScaleMap &yMap,
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const QRectF &canvasRect, int from, int to ) const;
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virtual QRectF boundingRect() const;
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virtual QList<QwtLegendData> legendData() const;
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virtual QwtGraphic legendIcon( int index, const QSizeF & ) const;
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protected:
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QwtColumnSymbol *symbol( int valueIndex );
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virtual QwtColumnSymbol *specialSymbol(
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int sampleIndex, int valueIndex ) const;
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virtual void drawSample( QPainter *painter,
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const QwtScaleMap &xMap, const QwtScaleMap &yMap,
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const QRectF &canvasRect, const QwtInterval &boundingInterval,
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int index, const QwtSetSample& sample ) const;
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virtual void drawBar( QPainter *, int sampleIndex,
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int valueIndex, const QwtColumnRect & ) const;
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void drawStackedBars( QPainter *painter,
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const QwtScaleMap &xMap, const QwtScaleMap &yMap,
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const QRectF &canvasRect, int index,
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double sampleWidth, const QwtSetSample& sample ) const;
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void drawGroupedBars( QPainter *painter,
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const QwtScaleMap &xMap, const QwtScaleMap &yMap,
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const QRectF &canvasRect, int index,
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double sampleWidth, const QwtSetSample& sample ) const;
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private:
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void init();
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class PrivateData;
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PrivateData *d_data;
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};
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#endif
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