內容

• 特性
• 公共函數
• 信號
• 詳細描述

QVPieModelMapper 類

The QVPieModelMapper is a vertical model mapper for pie series. 更多...

頭：	#include <QVPieModelMapper>
實例化：	VPieModelMapper
繼承：	QPieModelMapper

• 所有成員列錶，包括繼承成員

特性

firstRow : int labelsColumn : int model : QAbstractItemModel *

rowCount : int series : QPieSeries * valuesColumn : int

• 1 特性繼承自 QObject

公共函數

	QVPieModelMapper (QObject * parent = Q_NULLPTR)
int	firstRow () const
int	labelsColumn () const
QAbstractItemModel *	model () const
int	rowCount () const
QPieSeries *	series () const
void	setFirstRow (int firstRow )
void	setLabelsColumn (int labelsColumn )
void	setModel (QAbstractItemModel * model )
void	setRowCount (int rowCount )
void	setSeries (QPieSeries * series )
void	setValuesColumn (int valuesColumn )
int	valuesColumn () const

• 32 公共函數繼承自 QObject

信號

void	firstRowChanged ()
void	labelsColumnChanged ()
void	modelReplaced ()
void	rowCountChanged ()
void	seriesReplaced ()
void	valuesColumnChanged ()

• 2 信號繼承自 QObject

額外繼承成員

• 1 公共槽繼承自 QObject
• 11 靜態公共成員繼承自 QObject
• 14 保護函數繼承自 QPieModelMapper
• 9 保護函數繼承自 QObject

詳細描述

The QVPieModelMapper is a vertical model mapper for pie series.

模型映射器允許使用的數據模型派生自 QAbstractItemModel class as a data source for a chart. A vertical model mapper is used to create a connection between a data model and QPieSeries , so that each row in the data model defines a pie slice and each column 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.

特性文檔編製

firstRow : int

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

最小且默認值為 0。

訪問函數：

int	firstRow () const
void	setFirstRow (int firstRow )

通知程序信號：

void	firstRowChanged ()

labelsColumn : int

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

默認值為 -1 (無效映射)。

訪問函數：

int	labelsColumn () const
void	setLabelsColumn (int labelsColumn )

通知程序信號：

void	labelsColumnChanged ()

model : QAbstractItemModel *

此特性保持映射器使用的模型。

訪問函數：

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

通知程序信號：

void	modelReplaced ()

rowCount : int

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

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

訪問函數：

int	rowCount () const
void	setRowCount (int rowCount )

通知程序信號：

void	rowCountChanged ()

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).

訪問函數：

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

通知程序信號：

void	seriesReplaced ()

valuesColumn : int

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

默認值為 -1 (無效映射)。

訪問函數：

int	valuesColumn () const
void	setValuesColumn (int valuesColumn )

通知程序信號：

void	valuesColumnChanged ()

成員函數文檔編製

QVPieModelMapper:: QVPieModelMapper ( QObject * parent = Q_NULLPTR)

構造映射器對象為子級化 parent .

[signal] void QVPieModelMapper:: firstRowChanged ()

This signal is emitted when the first row changes.

注意： 通知程序信號對於特性 firstRow .

int QVPieModelMapper:: labelsColumn () const

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

注意： getter 函數對於特性 labelsColumn .

另請參閱 setLabelsColumn ().

[signal] void QVPieModelMapper:: labelsColumnChanged ()

This signal is emitted when the labels column changes.

注意： 通知程序信號對於特性 labelsColumn .

[signal] void QVPieModelMapper:: modelReplaced ()

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

注意： 通知程序信號對於特性 model .

[signal] void QVPieModelMapper:: rowCountChanged ()

This signal is emitted when the number of rows changes.

注意： 通知程序信號對於特性 rowCount .

[signal] void QVPieModelMapper:: seriesReplaced ()

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

注意： 通知程序信號對於特性 series .

void QVPieModelMapper:: setLabelsColumn ( int labelsColumn )

Sets the model column that is kept in sync with the pies slices' labels to labelsColumn .

注意： setter 函數對於特性 labelsColumn .

另請參閱 labelsColumn ().

void QVPieModelMapper:: setValuesColumn ( int valuesColumn )

Sets the model column that is kept in sync with the pie slices' values to valuesColumn .

注意： setter 函數對於特性 valuesColumn .

另請參閱 valuesColumn ().

int QVPieModelMapper:: valuesColumn () const

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

注意： getter 函數對於特性 valuesColumn .

另請參閱 setValuesColumn ().

[signal] void QVPieModelMapper:: valuesColumnChanged ()

This signal is emitted when the values column changes.

注意： 通知程序信號對於特性 valuesColumn .