QVBoxPlotModelMapper 类

QVBoxPlotModelMapper 是用于框形图系列的垂直模型映射器。 更多...

头：	#include <QVBoxPlotModelMapper>
实例化：	VBoxPlotModelMapper
继承：	QObject

• 所有成员列表，包括继承成员

特性

firstBoxSetColumn : int firstRow : int lastBoxSetColumn : int

model : QAbstractItemModel* rowCount : int series : QtCharts::QBoxPlotSeries*

公共函数

	QVBoxPlotModelMapper (QObject * parent = nullptr)
int	firstBoxSetColumn () const
int	firstRow () const
int	lastBoxSetColumn () const
QAbstractItemModel *	model () const
int	rowCount () const
QBoxPlotSeries *	series () const
void	setFirstBoxSetColumn (int firstBoxSetColumn )
void	setFirstRow (int firstRow )
void	setLastBoxSetColumn (int lastBoxSetColumn )
void	setModel (QAbstractItemModel * model )
void	setRowCount (int rowCount )
void	setSeries (QBoxPlotSeries * series )

信号

void	firstBoxSetColumnChanged ()
void	firstRowChanged ()
void	lastBoxSetColumnChanged ()
void	modelReplaced ()
void	rowCountChanged ()
void	seriesReplaced ()

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 a QBoxPlotSeries object, so that each column in the data model defines a box-and-whiskers item and each row maps to the range and three median values of the box-and-whiskers item.

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

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

另请参阅 QHBoxPlotModelMapper .

特性文档编制

firstBoxSetColumn : int

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

默认值为 -1 (无效映射)。

访问函数：

int	firstBoxSetColumn () const
void	setFirstBoxSetColumn (int firstBoxSetColumn )

通知程序信号：

void	firstBoxSetColumnChanged ()

firstRow : int

This property holds the row of the model that contains the first values of the box-and-whiskers items in the box plot series.

最小且默认值为 0。

访问函数：

int	firstRow () const
void	setFirstRow (int firstRow )

通知程序信号：

void	firstRowChanged ()

lastBoxSetColumn : int

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

默认值为 -1 (无效映射)。

访问函数：

int	lastBoxSetColumn () const
void	setLastBoxSetColumn (int lastBoxSetColumn )

通知程序信号：

void	lastBoxSetColumnChanged ()

model : QAbstractItemModel *

此特性保持映射器使用的模型。

访问函数：

QAbstractItemModel *	model () const
void	setModel (QAbstractItemModel * model )

通知程序信号：

void	modelReplaced ()

rowCount : int

This property holds the number of rows of the model that are mapped as the data for the box plot series.

The minimum and default value is -1 (number limited to the number of columns in the model).

访问函数：

int	rowCount () const
void	setRowCount (int rowCount )

通知程序信号：

void	rowCountChanged ()

series : QtCharts::QBoxPlotSeries *

This property holds the box plot series that is used by the mapper.

All the data in the series is discarded when it is set to the mapper. When a new series is specified, the old series is disconnected (but it preserves its data).

访问函数：

QBoxPlotSeries *	series () const
void	setSeries (QBoxPlotSeries * series )

通知程序信号：

void	seriesReplaced ()

成员函数文档编制

QVBoxPlotModelMapper:: QVBoxPlotModelMapper ( QObject * parent = nullptr)

构造映射器对象为子级化 parent .

[signal] void QVBoxPlotModelMapper:: firstBoxSetColumnChanged ()

This signal is emitted when the first box-and-whiskers item column changes.

注意： 通知程序信号对于特性 firstBoxSetColumn .

[signal] void QVBoxPlotModelMapper:: firstRowChanged ()

This signal is emitted when the first row changes.

注意： 通知程序信号对于特性 firstRow .

[signal] void QVBoxPlotModelMapper:: lastBoxSetColumnChanged ()

This signal is emitted when the last box-and-whiskers item column changes.

注意： 通知程序信号对于特性 lastBoxSetColumn .

[signal] void QVBoxPlotModelMapper:: modelReplaced ()

This signal is emitted when the model that the mapper is connected to changes.

注意： 通知程序信号对于特性 model .

[signal] void QVBoxPlotModelMapper:: rowCountChanged ()

This signal is emitted when the number of rows changes.

注意： 通知程序信号对于特性 rowCount .

[signal] void QVBoxPlotModelMapper:: seriesReplaced ()

This signal is emitted when the series that the mapper is connected to changes.

注意： 通知程序信号对于特性 series .

内容

• 特性

• 公共函数

• 信号

• 详细描述