QHPieModelMapper Class

The QHPieModelMapper is a horizontal model mapper for pie series. More...

Header:	#include <QHPieModelMapper>
Instantiated By:	HPieModelMapper
Inherits:	QPieModelMapper

• List of all members, including inherited members

Properties

columnCount : int firstColumn : int labelsRow : int

model : QAbstractItemModel* series : QtCharts::QPieSeries* valuesRow : int

Public Functions

	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

Signals

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

Detailed Description

Model mappers enable using a data model derived from the 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.

Member Function Documentation

QHPieModelMapper::QHPieModelMapper(QObject *parent = nullptr)

Constructs a mapper object that is a child of parent.

[signal] void QHPieModelMapper::columnCountChanged()

This signal is emitted when the number of columns changes.

Note: Notifier signal for property columnCount.

[signal] void QHPieModelMapper::firstColumnChanged()

This signal is emitted when the first column changes.

Note: Notifier signal for property firstColumn.

[signal] void QHPieModelMapper::labelsRowChanged()

This signal is emitted when the labels row changes.

Note: Notifier signal for property labelsRow.

[signal] void QHPieModelMapper::modelReplaced()

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

Note: Notifier signal for property model.

[signal] void QHPieModelMapper::seriesReplaced()

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

Note: Notifier signal for property series.

[signal] void QHPieModelMapper::valuesRowChanged()

This signal is emitted when the values row changes.

Note: Notifier signal for property valuesRow.

int QHPieModelMapper::labelsRow() const

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

Note: Getter function for property labelsRow.

See also setLabelsRow().

void QHPieModelMapper::setLabelsRow(int labelsRow)

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

Note: Setter function for property labelsRow.

See also labelsRow().

void QHPieModelMapper::setValuesRow(int valuesRow)

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

Note: Setter function for property valuesRow.

See also valuesRow().

int QHPieModelMapper::valuesRow() const

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

Note: Getter function for property valuesRow.

See also setValuesRow().