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Contents

QVPieModelMapper Class

Vertical model mapper for pie series. More...

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

Properties

  • 1 property inherited from QObject

Public Functions

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
  • 31 public functions inherited from QObject

Signals

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

Additional Inherited Members

  • 1 public slot inherited from QObject
  • 11 static public members inherited from QObject
  • 14 protected functions inherited from QPieModelMapper
  • 9 protected functions inherited from QObject

Detailed Description

Vertical model mapper for pie series.

Model mappers allow you to use QAbstractItemModel derived models as a data source for a chart series. Vertical model mapper is used to create a connection between QPieSeries and QAbstractItemModel derived model object that keeps the consecutive pie slices data in columns. It is possible to use both QAbstractItemModel and QPieSeries model API. QVPieModelMapper makes sure that Pie and the model are kept in sync.

Note: Used model has to support adding/removing rows/columns and modifying the data of the cells.

Property Documentation

firstRow : int

This property defines which row of the model contains the first slice value.

Minimal and default value is: 0

Access functions:

int firstRow() const
void setFirstRow(int firstRow)

Notifier signal:

void firstRowChanged()

labelsColumn : int

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

Default value is: -1 (invalid mapping)

Access functions:

int labelsColumn() const
void setLabelsColumn(int labelsColumn)

Notifier signal:

void labelsColumnChanged()

model : QAbstractItemModel *

This property defines the model that is used by the mapper.

Access functions:

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

Notifier signal:

void modelReplaced()

rowCount : int

This property defines the number of rows of the model that are mapped as the data for QPieSeries.

Minimal and default value is: -1 (count limited by the number of rows in the model)

Access functions:

int rowCount() const
void setRowCount(int rowCount)

Notifier signal:

void rowCountChanged()

series : QPieSeries *

This property defines the QPieSeries object that is used by the mapper. All the data in the series is discarded when it is set to the mapper. When new series is specified the old series is disconnected (it preserves its data).

Access functions:

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

Notifier signal:

void seriesReplaced()

valuesColumn : int

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

Default value is: -1 (invalid mapping)

Access functions:

int valuesColumn() const
void setValuesColumn(int valuesColumn)

Notifier signal:

void valuesColumnChanged()

Member Function Documentation

QVPieModelMapper::QVPieModelMapper(QObject *parent = Q_NULLPTR)

Constructs a mapper object which is a child of parent.

[signal] void QVPieModelMapper::firstRowChanged()

Emitted when the firstRow has changed.

Note: Notifier signal for property firstRow.

int QVPieModelMapper::labelsColumn() const

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

Note: Getter function for property labelsColumn.

See also setLabelsColumn().

[signal] void QVPieModelMapper::labelsColumnChanged()

Emitted when the labelsColumn has changed.

Note: Notifier signal for property labelsColumn.

[signal] void QVPieModelMapper::modelReplaced()

Emitted when the model to which mapper is connected to has changed.

Note: Notifier signal for property model.

[signal] void QVPieModelMapper::rowCountChanged()

Emitted when the rowCount has changed.

Note: Notifier signal for property rowCount.

[signal] void QVPieModelMapper::seriesReplaced()

Emitted when the series to which mapper is connected to has changed.

Note: Notifier signal for property series.

void QVPieModelMapper::setLabelsColumn(int labelsColumn)

Sets the model column that is kept in sync with the pie's slices labels. Parameter labelsColumn specifies the row of the model.

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. Parameter valuesColumn specifies the row of the model.

Note: Setter function for property valuesColumn.

See also valuesColumn().

int QVPieModelMapper::valuesColumn() const

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

Note: Getter function for property valuesColumn.

See also setValuesColumn().

[signal] void QVPieModelMapper::valuesColumnChanged()

Emitted when the valuesColumn has changed.

Note: Notifier signal for property valuesColumn.

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