QVCandlestickModelMapper Class

The QVCandlestickModelMapper class is a vertical model mapper for a candlestick series. More...

Header:	#include <QVCandlestickModelMapper>
Since:	Qt 5.8
Instantiated By:	VCandlestickModelMapper
Inherits:	QCandlestickModelMapper

• List of all members, including inherited members

Properties

closeRow : int firstSetColumn : int highRow : int lastSetColumn : int

lowRow : int openRow : int timestampRow : int

Public Functions

	QVCandlestickModelMapper(QObject *parent = nullptr)
int	closeRow() const
int	firstSetColumn() const
int	highRow() const
int	lastSetColumn() const
int	lowRow() const
int	openRow() const
void	setCloseRow(int closeRow)
void	setFirstSetColumn(int firstSetColumn)
void	setHighRow(int highRow)
void	setLastSetColumn(int lastSetColumn)
void	setLowRow(int lowRow)
void	setOpenRow(int openRow)
void	setTimestampRow(int timestampRow)
int	timestampRow() const

Reimplemented Public Functions

virtual Qt::Orientation

orientation() const override

Signals

void	closeRowChanged()
void	firstSetColumnChanged()
void	highRowChanged()
void	lastSetColumnChanged()
void	lowRowChanged()
void	openRowChanged()
void	timestampRowChanged()

Detailed Description

Model mappers enable using a data model derived from the QAbstractItemModel class as a data source for a chart. A vertical model mapper is used to create a connection between a data model and QCandlestickSeries, so that each column in the data model defines a candlestick item and each row maps to the open, high, low, close, and timestamp values of the candlestick item.

Both model and candlestick series properties can be used to manipulate the data. The model mapper keeps the candlestick series and the data model in sync.

The model mapper ensures that all the candlestick items in the candlestick series have equal sizes. Therefore, adding or removing a value from a candlestick item causes the same change to be made in all the candlestick items in the candlestick series.

See also QCandlestickSeries, QCandlestickSet, and QHCandlestickModelMapper.

Member Function Documentation

QVCandlestickModelMapper::QVCandlestickModelMapper(QObject *parent = nullptr)

Constructs a vertical model mapper object which is a child of parent.

[signal] void QVCandlestickModelMapper::closeRowChanged()

Emitted when the row of the model that contains close values is changed.

Note: Notifier signal for property closeRow.

See also closeRow.

[signal] void QVCandlestickModelMapper::firstSetColumnChanged()

Emitted when the column of the model that contains the data of the first item is changed.

Note: Notifier signal for property firstSetColumn.

See also firstSetColumn.

[signal] void QVCandlestickModelMapper::highRowChanged()

Emitted when the row of the model that contains high values is changed.

Note: Notifier signal for property highRow.

See also highRow.

[signal] void QVCandlestickModelMapper::lastSetColumnChanged()

Emitted when the column of the model that contains the data of the last item is changed.

Note: Notifier signal for property lastSetColumn.

See also lastSetColumn.

[signal] void QVCandlestickModelMapper::lowRowChanged()

Emitted when the row of the model that contains low values is changed.

Note: Notifier signal for property lowRow.

See also lowRow.

[signal] void QVCandlestickModelMapper::openRowChanged()

Emitted when the row of the model that contains open values is changed.

Note: Notifier signal for property openRow.

See also openRow.

[signal] void QVCandlestickModelMapper::timestampRowChanged()

Emitted when the row of the model that contains timestamp values is changed.

Note: Notifier signal for property timestampRow.

See also timestampRow.

[override virtual] Qt::Orientation QVCandlestickModelMapper::orientation() const

Reimplements: QCandlestickModelMapper::orientation() const.

Returns Qt::Vertical. This means that values of the item are read from columns.