QHPieModelMapper 类

QHPieModelMapper 是用于饼图系列的水平模型映射器。 更多...

头：	#include <QHPieModelMapper>
实例化：	HPieModelMapper
继承：	QPieModelMapper

• 所有成员列表，包括继承成员

特性

columnCount : int firstColumn : int labelsRow : int

model : QAbstractItemModel* series : QPieSeries* valuesRow : int

公共函数

	QHPieModelMapper (QObject * parent = nullptr)
int	columnCount () const
int	firstColumn () const
int	labelsRow () const
QAbstractItemModel *	model () const
QPieSeries *	series () const
void	setColumnCount (int columnCount )
void	setFirstColumn (int firstColumn )
void	setLabelsRow (int labelsRow )
void	setModel (QAbstractItemModel * model )
void	setSeries (QPieSeries * series )
void	setValuesRow (int valuesRow )
int	valuesRow () const

信号

void	columnCountChanged ()
void	firstColumnChanged ()
void	labelsRowChanged ()
void	modelReplaced ()
void	seriesReplaced ()
void	valuesRowChanged ()

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 QPieSeries , so that each column in the data model defines a pie slice and each row maps to the label or the value of the pie slice.

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

特性文档编制

columnCount : int

This property holds the number of columns of the model that are mapped as the data for the pie series.

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

访问函数：

int	columnCount () const
void	setColumnCount (int columnCount )

通知程序信号：

void	columnCountChanged ()

firstColumn : int

This property holds the column of the model that contains the first slice value.

最小且默认值为 0。

访问函数：

int	firstColumn () const
void	setFirstColumn (int firstColumn )

通知程序信号：

void	firstColumnChanged ()

labelsRow : int

This property holds the row of the model that is kept in sync with the labels of the pie's slices.

默认值为 -1 (无效映射)。

访问函数：

int	labelsRow () const
void	setLabelsRow (int labelsRow )

通知程序信号：

void	labelsRowChanged ()

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 ()

series : QPieSeries *

This property holds the pie 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：

QPieSeries *	series () const
void	setSeries (QPieSeries * series )

通知程序信号：

void	seriesReplaced ()

valuesRow : int

This property holds the row of the model that is kept in sync with the values of the pie's slices.

默认值为 -1 (无效映射)。

访问函数：

int	valuesRow () const
void	setValuesRow (int valuesRow )

通知程序信号：

void	valuesRowChanged ()

成员函数文档编制

[explicit] QHPieModelMapper:: QHPieModelMapper ( QObject * parent = nullptr)

构造映射器对象为子级化 parent .

[signal] void QHPieModelMapper:: columnCountChanged ()

This signal is emitted when the number of columns changes.

注意： 通知程序信号对于特性 columnCount .

[signal] void QHPieModelMapper:: firstColumnChanged ()

This signal is emitted when the first column changes.

注意： 通知程序信号对于特性 firstColumn .

int QHPieModelMapper:: labelsRow () const

Returns the row of the model that is kept in sync with the labels of the pie's slices.

注意： Getter function for property labelsRow.

另请参阅 setLabelsRow ().

[signal] void QHPieModelMapper:: labelsRowChanged ()

This signal is emitted when the labels row changes.

注意： 通知程序信号对于特性 labelsRow .

[signal] void QHPieModelMapper:: 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 QHPieModelMapper:: 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 .

void QHPieModelMapper:: setLabelsRow ( int labelsRow )

Sets the model row that is kept in sync with the pie slices' labels to labelsRow .

注意： setter 函数对于特性 labelsRow .

另请参阅 labelsRow ().

void QHPieModelMapper:: setValuesRow ( int valuesRow )

Sets the model row that is kept in sync with the pie slices' values to valuesRow .

注意： setter 函数对于特性 valuesRow .

另请参阅 valuesRow ().

int QHPieModelMapper:: valuesRow () const

Returns the row of the model that is kept in sync with the values of the pie's slices.

注意： getter 函数对于特性 valuesRow。

另请参阅 setValuesRow ().

[signal] void QHPieModelMapper:: valuesRowChanged ()

This signal is emitted when the values row changes.

注意： 通知程序信号对于特性 valuesRow .

内容

• 特性

• 公共函数

• 信号

• 详细描述