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