内容

• 特性
• 公共函数
• 重实现公共函数
• 信号
• 详细描述

QHCandlestickModelMapper 类

QHCandlestickModelMapper 类是用于烛台系列的水平模型映射器。 更多...

头：	#include <QHCandlestickModelMapper>
Since:	Qt 5.8
实例化：	HCandlestickModelMapper
继承：	QCandlestickModelMapper

• 所有成员列表，包括继承成员

特性

closeColumn : int firstSetRow : int highColumn : int lastSetRow : int

lowColumn : int openColumn : int timestampColumn : int

公共函数

	QHCandlestickModelMapper (QObject * parent = nullptr)
int	closeColumn () const
int	firstSetRow () const
int	highColumn () const
int	lastSetRow () const
int	lowColumn () const
int	openColumn () const
void	setCloseColumn (int closeColumn )
void	setFirstSetRow (int firstSetRow )
void	setHighColumn (int highColumn )
void	setLastSetRow (int lastSetRow )
void	setLowColumn (int lowColumn )
void	setOpenColumn (int openColumn )
void	setTimestampColumn (int timestampColumn )
int	timestampColumn () const

重实现公共函数

virtual Qt::Orientation

orientation () const override

信号

void	closeColumnChanged ()
void	firstSetRowChanged ()
void	highColumnChanged ()
void	lastSetRowChanged ()
void	lowColumnChanged ()
void	openColumnChanged ()
void	timestampColumnChanged ()

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 horizontal model mapper is used to create a connection between a data model and QCandlestickSeries , so that each row in the data model defines a candlestick item and each column 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 QVCandlestickModelMapper .

特性文档编制

closeColumn : int

This property holds the column 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	closeColumn () const
void	setCloseColumn (int closeColumn )

通知程序信号：

void	closeColumnChanged ()

firstSetRow : int

This property holds the row 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	firstSetRow () const
void	setFirstSetRow (int firstSetRow )

通知程序信号：

void	firstSetRowChanged ()

highColumn : int

This property holds the column 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	highColumn () const
void	setHighColumn (int highColumn )

通知程序信号：

void	highColumnChanged ()

lastSetRow : int

This property holds the row 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	lastSetRow () const
void	setLastSetRow (int lastSetRow )

通知程序信号：

void	lastSetRowChanged ()

lowColumn : int

This property holds the column 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	lowColumn () const
void	setLowColumn (int lowColumn )

通知程序信号：

void	lowColumnChanged ()

openColumn : int

This property holds the column 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	openColumn () const
void	setOpenColumn (int openColumn )

通知程序信号：

void	openColumnChanged ()

timestampColumn : int

This property holds the column 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	timestampColumn () const
void	setTimestampColumn (int timestampColumn )

通知程序信号：

void	timestampColumnChanged ()

成员函数文档编制

QHCandlestickModelMapper:: QHCandlestickModelMapper ( QObject * parent = nullptr)

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

[signal] void QHCandlestickModelMapper:: closeColumnChanged ()

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

注意： 通知程序信号对于特性 closeColumn .

另请参阅 closeColumn .

[signal] void QHCandlestickModelMapper:: firstSetRowChanged ()

Emitted when the row 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 firstSetRow .

另请参阅 firstSetRow .

[signal] void QHCandlestickModelMapper:: highColumnChanged ()

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

注意： 通知程序信号对于特性 highColumn .

另请参阅 highColumn .

[signal] void QHCandlestickModelMapper:: lastSetRowChanged ()

Emitted when the row 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 lastSetRow .

另请参阅 lastSetRow .

[signal] void QHCandlestickModelMapper:: lowColumnChanged ()

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

注意： 通知程序信号对于特性 lowColumn .

另请参阅 lowColumn .

[signal] void QHCandlestickModelMapper:: openColumnChanged ()

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

注意： 通知程序信号对于特性 openColumn .

另请参阅 openColumn .

[signal] void QHCandlestickModelMapper:: timestampColumnChanged ()

Emitted when the column of the model that contains timestamp values is changed

注意： 通知程序信号对于特性 timestampColumn .

另请参阅 timestampColumn .

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

重实现： QCandlestickModelMapper::orientation () const.

返回 Qt::Horizontal 。这意味着从行读取项值。