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133 lines
3.9 KiB
C++
133 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_INTERVAL_CURVE_H
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#define QWT_PLOT_INTERVAL_CURVE_H
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#include "qwt_global.h"
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#include "qwt_plot_seriesitem.h"
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#include "qwt_series_data.h"
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class QwtIntervalSymbol;
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/*!
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\brief QwtPlotIntervalCurve represents a series of samples, where each value
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is associated with an interval ( \f$[y1,y2] = f(x)\f$ ).
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The representation depends on the style() and an optional symbol()
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that is displayed for each interval. QwtPlotIntervalCurve might be used
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to display error bars or the area between 2 curves.
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*/
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class QWT_EXPORT QwtPlotIntervalCurve:
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public QwtPlotSeriesItem, public QwtSeriesStore<QwtIntervalSample>
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{
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public:
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/*!
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\brief Curve styles.
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The default setting is QwtPlotIntervalCurve::Tube.
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\sa setStyle(), style()
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*/
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enum CurveStyle
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{
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/*!
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Don't draw a curve. Note: This doesn't affect the symbols.
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*/
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NoCurve,
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/*!
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Build 2 curves from the upper and lower limits of the intervals
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and draw them with the pen(). The area between the curves is
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filled with the brush().
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*/
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Tube,
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/*!
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Styles >= QwtPlotIntervalCurve::UserCurve are reserved for derived
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classes that overload drawSeries() with
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additional application specific curve types.
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*/
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UserCurve = 100
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};
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/*!
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Attributes to modify the drawing algorithm.
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\sa setPaintAttribute(), testPaintAttribute()
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*/
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enum PaintAttribute
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{
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/*!
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Clip polygons before painting them. In situations, where points
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are far outside the visible area (f.e when zooming deep) this
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might be a substantial improvement for the painting performance.
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*/
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ClipPolygons = 0x01,
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//! Check if a symbol is on the plot canvas before painting it.
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ClipSymbol = 0x02
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};
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//! Paint attributes
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typedef QFlags<PaintAttribute> PaintAttributes;
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explicit QwtPlotIntervalCurve( const QString &title = QString() );
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explicit QwtPlotIntervalCurve( const QwtText &title );
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virtual ~QwtPlotIntervalCurve();
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virtual int rtti() const;
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void setPaintAttribute( PaintAttribute, bool on = true );
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bool testPaintAttribute( PaintAttribute ) const;
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void setSamples( const QVector<QwtIntervalSample> & );
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void setSamples( QwtSeriesData<QwtIntervalSample> * );
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void setPen( const QColor &, qreal width = 0.0, Qt::PenStyle = Qt::SolidLine );
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void setPen( const QPen & );
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const QPen &pen() const;
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void setBrush( const QBrush & );
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const QBrush &brush() const;
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void setStyle( CurveStyle style );
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CurveStyle style() const;
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void setSymbol( const QwtIntervalSymbol * );
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const QwtIntervalSymbol *symbol() const;
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virtual void drawSeries( QPainter *,
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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 QwtGraphic legendIcon( int index, const QSizeF & ) const;
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protected:
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void init();
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virtual void drawTube( QPainter *,
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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 void drawSymbols( QPainter *, const QwtIntervalSymbol &,
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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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private:
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class PrivateData;
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PrivateData *d_data;
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};
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Q_DECLARE_OPERATORS_FOR_FLAGS( QwtPlotIntervalCurve::PaintAttributes )
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#endif
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