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qwt_plot_histogram.h
/******************************************************************************
* 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_HISTOGRAM_H
#define QWT_PLOT_HISTOGRAM_H
#include "qwt_global.h"
#include "qwt_plot_seriesitem.h"
class QwtColumnSymbol;
class QwtColumnRect;
class QColor;
class QPolygonF;
#if QT_VERSION < 0x060000
template< typename T > class QVector;
#endif
class QWT_EXPORT QwtPlotHistogram
: public QwtPlotSeriesItem
, public QwtSeriesStore< QwtIntervalSample >
{
public:
enum HistogramStyle
{
Outline,
Columns,
Lines,
UserStyle = 100
};
explicit QwtPlotHistogram( const QString& title = QString() );
explicit QwtPlotHistogram( const QwtText& title );
virtual ~QwtPlotHistogram();
virtual int rtti() const QWT_OVERRIDE;
void setPen( const QColor&,
qreal width = 0.0, Qt::PenStyle = Qt::SolidLine );
void setPen( const QPen& );
const QPen& pen() const;
void setBrush( const QBrush& );
const QBrush& brush() const;
void setSamples( const QVector< QwtIntervalSample >& );
void setSamples( QwtSeriesData< QwtIntervalSample >* );
void setBaseline( double );
double baseline() const;
void setStyle( HistogramStyle style );
HistogramStyle style() const;
void setSymbol( const QwtColumnSymbol* );
const QwtColumnSymbol* symbol() 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 QwtGraphic legendIcon(
int index, const QSizeF& ) const QWT_OVERRIDE;
protected:
virtual QwtColumnRect columnRect( const QwtIntervalSample&,
const QwtScaleMap&, const QwtScaleMap& ) const;
virtual void drawColumn( QPainter*, const QwtColumnRect&,
const QwtIntervalSample& ) const;
void drawColumns( QPainter*,
const QwtScaleMap& xMap, const QwtScaleMap& yMap,
int from, int to ) const;
void drawOutline( QPainter*,
const QwtScaleMap& xMap, const QwtScaleMap& yMap,
int from, int to ) const;
void drawLines( QPainter*,
const QwtScaleMap& xMap, const QwtScaleMap& yMap,
int from, int to ) const;
private:
void init();
void flushPolygon( QPainter*, double baseLine, QPolygonF& ) const;
class PrivateData;
PrivateData* m_data;
};
#endif
QVector
Definition qwt_clipper.h:23
QwtColumnRect
Directed rectangle representing bounding rectangle and orientation of a column.
Definition qwt_column_symbol.h:27
QwtColumnSymbol
A drawing primitive for columns.
Definition qwt_column_symbol.h:75
QwtGraphic
A paint device for scalable graphics.
Definition qwt_graphic.h:76
QwtIntervalSample
A sample of the types (x1-x2, y) or (x, y1-y2)
Definition qwt_samples.h:21
QwtPlotHistogram
QwtPlotHistogram represents a series of samples, where an interval is associated with a value ( ).
Definition qwt_plot_histogram.h:44
QwtPlotHistogram::HistogramStyle
HistogramStyle
Definition qwt_plot_histogram.h:53
QwtPlotHistogram::Lines
@ Lines
Definition qwt_plot_histogram.h:72
QwtPlotHistogram::Columns
@ Columns
Definition qwt_plot_histogram.h:67
QwtPlotHistogram::Outline
@ Outline
Definition qwt_plot_histogram.h:60
QwtPlotItem::rtti
virtual int rtti() const
Definition qwt_plot_item.cpp:136
QwtPlotSeriesItem
Base class for plot items representing a series of samples.
Definition qwt_plot_seriesitem.h:26
QwtScaleMap
A scale map.
Definition qwt_scale_map.h:27
QwtSeriesData
Abstract interface for iterating over samples.
Definition qwt_series_data.h:50
QwtSeriesStore
Class storing a QwtSeriesData object.
Definition qwt_series_store.h:67
QwtText
A class representing a text.
Definition qwt_text.h:52