QVPieModelMapper Class

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

Header:	#include <QVPieModelMapper>
Instantiated By:	VPieModelMapper
Inherits:	QPieModelMapper

• List of all members, including inherited members

Properties

firstRow : int labelsColumn : int model : QAbstractItemModel*

rowCount : int series : QtCharts::QPieSeries* valuesColumn : int

Public Functions

	QVPieModelMapper(QObject *parent = 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

Signals

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

Detailed Description

Model mappers enable using a data model derived from the 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.

Member Function Documentation

QVPieModelMapper::QVPieModelMapper(QObject *parent = nullptr)

Constructs a mapper object that is a child of parent.

[signal] void QVPieModelMapper::firstRowChanged()

This signal is emitted when the first row changes.

Note: Notifier signal for property firstRow.

[signal] void QVPieModelMapper::labelsColumnChanged()

This signal is emitted when the labels column changes.

Note: Notifier signal for property labelsColumn.

[signal] void QVPieModelMapper::modelReplaced()

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

Note: Notifier signal for property model.

[signal] void QVPieModelMapper::rowCountChanged()

This signal is emitted when the number of rows changes.

Note: Notifier signal for property rowCount.

[signal] void QVPieModelMapper::seriesReplaced()

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

Note: Notifier signal for property series.

[signal] void QVPieModelMapper::valuesColumnChanged()

This signal is emitted when the values column changes.

Note: Notifier signal for property valuesColumn.

int QVPieModelMapper::labelsColumn() const

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

Note: Getter function for property labelsColumn.

See also setLabelsColumn().

void QVPieModelMapper::setLabelsColumn(int labelsColumn)

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

Note: Setter function for property labelsColumn.

See also labelsColumn().

void QVPieModelMapper::setValuesColumn(int valuesColumn)

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

Note: Setter function for property valuesColumn.

See also valuesColumn().

int QVPieModelMapper::valuesColumn() const

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

Note: Getter function for property valuesColumn.

See also setValuesColumn().