QTradingView::Series Class Reference

Abstract base class for data series in QTradingView charts. More...

#include <Series.h>

Inheritance diagram for QTradingView::Series:

Public Member Functions
	Series (SeriesType type)
	Constructs a Series of the given type.
virtual	~Series ()=default
	Virtual destructor for Series.
SeriesType	type () const
	Returns the type of the series.
virtual qint64	timestampAt (int index) const =0
	Returns the timestamp for the data point at the given index.
virtual int	dataCount () const =0
	Returns the number of data points in the series.
virtual void	render (QPainter *painter, const ViewPort &viewport, IScale *scale)=0
	Renders the series within the given viewport and scale.
virtual bool	hitTest (const QPointF &point, int &outIndex) const =0
	Performs hit testing to find the nearest data point to the given position.
virtual void	calculateRange (int startIndex, int endIndex, double &outMin, double &outMax) const =0
	Calculates the data range (min/max values) within the given index range.

Protected Attributes
SeriesType	m_type

Detailed Description

Abstract base class for data series in QTradingView charts.

Series provides the interface for chart series (line, bar, candlestick), including type, rendering, and data access.

Constructor & Destructor Documentation

Series()

QTradingView::Series::Series ( SeriesType  type )

inlineexplicit

Constructs a Series of the given type.

Parameters

type	Series type (Line, Bar, CandleStick).

Member Function Documentation

calculateRange()

virtual void QTradingView::Series::calculateRange ( int  startIndex, int  endIndex, double &  outMin, double &  outMax  ) const

pure virtual

Calculates the data range (min/max values) within the given index range.

Parameters

startIndex	Start index of the range.
endIndex	End index of the range.
outMin	Output parameter for the minimum value.
outMax	Output parameter for the maximum value.

Implemented in QTradingView::BarSeries, QTradingView::CandleStickSeries, and QTradingView::LineSeries.

dataCount()

virtual int QTradingView::Series::dataCount ( ) const

pure virtual

Returns the number of data points in the series.

Returns

Data point count.

Implemented in QTradingView::BarSeries, QTradingView::CandleStickSeries, and QTradingView::LineSeries.

hitTest()

virtual bool QTradingView::Series::hitTest ( const QPointF &  point, int &  outIndex  ) const

pure virtual

Performs hit testing to find the nearest data point to the given position.

Parameters

point	Position to test.
outIndex	Output parameter for the nearest data point index.

Returns

True if a data point was hit, false otherwise.

Implemented in QTradingView::BarSeries, QTradingView::CandleStickSeries, and QTradingView::LineSeries.

render()

virtual void QTradingView::Series::render ( QPainter *  painter, const ViewPort &  viewport, IScale *  scale  )

pure virtual

Renders the series within the given viewport and scale.

Parameters

painter	QPainter instance for drawing.
viewport	Viewport defining the area to render.
scale	Scale used for rendering.

Implemented in QTradingView::BarSeries, QTradingView::CandleStickSeries, and QTradingView::LineSeries.

timestampAt()

virtual qint64 QTradingView::Series::timestampAt ( int  index ) const

pure virtual

Returns the timestamp for the data point at the given index.

Parameters

index

Data point index.

Returns

Timestamp in milliseconds.

Implemented in QTradingView::BarSeries, QTradingView::CandleStickSeries, and QTradingView::LineSeries.

type()

SeriesType QTradingView::Series::type

(

)

const

Returns the type of the series.

Returns

SeriesType enum value.

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The documentation for this class was generated from the following file:

• include/QTradingView/series/Series.h