QVCandlestickModelMapper 类

QVCandlestickModelMapper 类是用于烛台系列的垂直模型映射器。 更多...

头：	#include <QVCandlestickModelMapper>
Since:	Qt 5.8
实例化：	VCandlestickModelMapper
继承：	QCandlestickModelMapper

该类在 Qt 5.8 引入。

• 所有成员列表，包括继承成员

特性

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

lowRow : int openRow : int timestampRow : int

公共函数

	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

重实现公共函数

virtual Qt::Orientation

orientation () const override

信号

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

详细描述

模型映射器允许使用的数据模型派生自 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.

另请参阅 QCandlestickSeries , QCandlestickSet ，和 QHCandlestickModelMapper .

特性文档编制

closeRow : int

This property holds the row of the model that contains the close values of the candlestick items in the series.

默认值为 -1 (无效映射)。

访问函数：

int	closeRow () const
void	setCloseRow (int closeRow )

通知程序信号：

void	closeRowChanged ()

firstSetColumn : int

This property holds the column of the model that is used as the data source for the first item.

默认值为 -1 (无效映射)。

访问函数：

int	firstSetColumn () const
void	setFirstSetColumn (int firstSetColumn )

通知程序信号：

void	firstSetColumnChanged ()

highRow : int

This property holds the row of the model that contains the high values of the candlestick items in the series.

默认值为 -1 (无效映射)。

访问函数：

int	highRow () const
void	setHighRow (int highRow )

通知程序信号：

void	highRowChanged ()

lastSetColumn : int

This property holds the column of the model that is used as the data source for the last item.

默认值为 -1 (无效映射)。

访问函数：

int	lastSetColumn () const
void	setLastSetColumn (int lastSetColumn )

通知程序信号：

void	lastSetColumnChanged ()

lowRow : int

This property holds the row of the model that contains the low values of the candlestick items in the series.

默认值为 -1 (无效映射)。

访问函数：

int	lowRow () const
void	setLowRow (int lowRow )

通知程序信号：

void	lowRowChanged ()

openRow : int

This property holds the row of the model that contains the open values of the candlestick items in the series.

默认值为 -1 (无效映射)。

访问函数：

int	openRow () const
void	setOpenRow (int openRow )

通知程序信号：

void	openRowChanged ()

timestampRow : int

This property holds the row of the model that contains the timestamp values of the candlestick items in the series.

默认值为 -1 (无效映射)。

访问函数：

int	timestampRow () const
void	setTimestampRow (int timestampRow )

通知程序信号：

void	timestampRowChanged ()

成员函数文档编制

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.

注意： 通知程序信号对于特性 closeRow .

另请参阅 closeRow .

[signal] void QVCandlestickModelMapper:: firstSetColumnChanged ()

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

注意： 通知程序信号对于特性 firstSetColumn .

另请参阅 firstSetColumn .

[signal] void QVCandlestickModelMapper:: highRowChanged ()

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

注意： 通知程序信号对于特性 highRow .

另请参阅 highRow .

[signal] void QVCandlestickModelMapper:: lastSetColumnChanged ()

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

注意： 通知程序信号对于特性 lastSetColumn .

另请参阅 lastSetColumn .

[signal] void QVCandlestickModelMapper:: lowRowChanged ()

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

注意： 通知程序信号对于特性 lowRow .

另请参阅 lowRow .

[signal] void QVCandlestickModelMapper:: openRowChanged ()

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

注意： 通知程序信号对于特性 openRow .

另请参阅 openRow .

[signal] void QVCandlestickModelMapper:: timestampRowChanged ()

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

注意： 通知程序信号对于特性 timestampRow .

另请参阅 timestampRow .

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

重实现： QCandlestickModelMapper::orientation () const.

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

内容

• 特性

• 公共函数

• 重实现公共函数

• 信号

• 详细描述