qwt_plot_tradingcurve.h
/* -*- 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_TRADING_CURVE_H
#define QWT_PLOT_TRADING_CURVE_H
#include "qwt_global.h"
#include "qwt_plot_seriesitem.h"
#include "qwt_series_data.h"
class QWT_EXPORT QwtPlotTradingCurve:
public QwtPlotSeriesItem, public QwtSeriesStore<QwtOHLCSample>
{
public:
enum SymbolStyle
{
NoSymbol = -1,
Bar,
CandleStick,
UserSymbol = 100
};
enum Direction
{
Increasing,
Decreasing
};
enum PaintAttribute
{
ClipSymbols = 0x01
};
typedef QFlags<PaintAttribute> PaintAttributes;
explicit QwtPlotTradingCurve( const QString &title = QString() );
explicit QwtPlotTradingCurve( const QwtText &title );
virtual ~QwtPlotTradingCurve();
virtual int rtti() const;
void setPaintAttribute( PaintAttribute, bool on = true );
bool testPaintAttribute( PaintAttribute ) const;
void setSamples( const QVector<QwtOHLCSample> & );
void setSamples( QwtSeriesData<QwtOHLCSample> * );
void setSymbolStyle( SymbolStyle style );
SymbolStyle symbolStyle() const;
void setSymbolPen( const QColor &,
qreal width = 0.0, Qt::PenStyle = Qt::SolidLine );
void setSymbolPen( const QPen & );
QPen symbolPen() const;
void setSymbolBrush( Direction, const QBrush & );
QBrush symbolBrush( Direction ) const;
void setSymbolExtent( double );
double symbolExtent() const;
void setMinSymbolWidth( double );
double minSymbolWidth() const;
void setMaxSymbolWidth( double );
double maxSymbolWidth() const;
virtual void drawSeries( QPainter *painter,
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 drawSymbols( QPainter *,
const QwtScaleMap &xMap, const QwtScaleMap &yMap,
const QRectF &canvasRect, int from, int to ) const;
virtual void drawUserSymbol( QPainter *,
SymbolStyle, const QwtOHLCSample &,
Qt::Orientation, bool inverted, double symbolWidth ) const;
void drawBar( QPainter *painter, const QwtOHLCSample &,
Qt::Orientation, bool inverted, double width ) const;
void drawCandleStick( QPainter *, const QwtOHLCSample &,
Qt::Orientation, double width ) const;
virtual double scaledSymbolWidth(
const QwtScaleMap &xMap, const QwtScaleMap &yMap,
const QRectF &canvasRect ) const;
private:
class PrivateData;
PrivateData *d_data;
};
Q_DECLARE_OPERATORS_FOR_FLAGS( QwtPlotTradingCurve::PaintAttributes )
#endif
QwtOHLCSample
Open-High-Low-Close sample used in financial charts.
Definition: qwt_samples.h:147
QwtPlotSeriesItem::boundingRect
virtual QRectF boundingRect() const
Definition: qwt_plot_seriesitem.cpp:95
QwtPlotSeriesItem
Base class for plot items representing a series of samples.
Definition: qwt_plot_seriesitem.h:24
QwtPlotTradingCurve::SymbolStyle
SymbolStyle
Symbol styles.
Definition: qwt_plot_tradingcurve.h:49
QwtSeriesStore
Class storing a QwtSeriesData object.
Definition: qwt_series_store.h:66
QwtPlotItem::rtti
virtual int rtti() const
Definition: qwt_plot_item.cpp:120
QwtSeriesData< QwtOHLCSample >
QwtText
A class representing a text.
Definition: qwt_text.h:52
QwtPlotSeriesItem::drawSeries
virtual void drawSeries(QPainter *painter, const QwtScaleMap &xMap, const QwtScaleMap &yMap, const QRectF &canvasRect, int from, int to) const =0
QwtPlotTradingCurve::Direction
Direction
Direction of a price movement.
Definition: qwt_plot_tradingcurve.h:83
QwtPlotTradingCurve::PaintAttribute
PaintAttribute
Definition: qwt_plot_tradingcurve.h:96
QwtPlotTradingCurve::PaintAttributes
QFlags< PaintAttribute > PaintAttributes
Paint attributes.
Definition: qwt_plot_tradingcurve.h:102
QwtGraphic
A paint device for scalable graphics.
Definition: qwt_graphic.h:75
QwtPlotTradingCurve::Bar
@ Bar
Definition: qwt_plot_tradingcurve.h:59
QwtPlotTradingCurve::Increasing
@ Increasing
The closing price is higher than the opening price.
Definition: qwt_plot_tradingcurve.h:85
QwtScaleMap
A scale map.
Definition: qwt_scale_map.h:31
QwtPlotItem::legendIcon
virtual QwtGraphic legendIcon(int index, const QSizeF &) const
Definition: qwt_plot_item.cpp:371
QwtPlotTradingCurve
QwtPlotTradingCurve illustrates movements in the price of a financial instrument over time.
Definition: qwt_plot_tradingcurve.h:40
QwtPlotTradingCurve::CandleStick
@ CandleStick
Definition: qwt_plot_tradingcurve.h:67