Interface for iterating over an array of OHLC samples 更多...

类 QwtTradingChartData 继承关系图:

Public 成员函数
	QwtTradingChartData (const QVector< QwtOHLCSample > &=QVector< QwtOHLCSample >())
	Constructor

virtual QRectF	boundingRect () const override
	Calculate the bounding rectangle

Public 成员函数继承自 QwtArraySeriesData< QwtOHLCSample >
	QwtArraySeriesData ()
	Constructor

	QwtArraySeriesData (const QVector< QwtOHLCSample > &samples)
	Constructor

	QwtArraySeriesData (QVector< QwtOHLCSample > &&samples)

void	setSamples (const QVector< QwtOHLCSample > &samples)
	Assign an array of samples

void	setSamples (QVector< QwtOHLCSample > &&samples)

const QVector< QwtOHLCSample >	samples () const

virtual size_t	size () const override

virtual QwtOHLCSample	sample (size_t index) const override

Public 成员函数继承自 QwtSeriesData< T >
	QwtSeriesData ()
	Constructor

virtual	~QwtSeriesData ()
	Destructor

virtual void	setRectOfInterest (const QRectF &rect)
	Set a the "rect of interest"

额外继承的成员函数
Protected 属性继承自 QwtArraySeriesData< QwtOHLCSample >
QVector< QwtOHLCSample >	m_samples
	Vector of samples

Protected 属性继承自 QwtSeriesData< T >
QRectF	cachedBoundingRect
	Can be used to cache a calculated bounding rectangle

详细描述

Interface for iterating over an array of OHLC samples

QwtTradingChartData provides access to QwtOHLCSample samples stored in a QVector. Used for candlestick or OHLC chart financial data.

构造及析构函数说明

QwtTradingChartData::QwtTradingChartData ( const QVector< QwtOHLCSample > & samples = QVector< QwtOHLCSample >() )

Constructor

参数

samples Samples

QRectF QwtTradingChartData::boundingRect ( ) const

overridevirtual

Calculate the bounding rectangle

The bounding rectangle is calculated once by iterating over all points and is stored for all following requests.

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