class QVPieModelMapper

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

Synopsis

Properties

• firstRowᅟ - Row of the model that contains the first slice value

• labelsColumnᅟ - Column of the model that is kept in sync with the labels of the pie’s slices

• modelᅟ - That is used by the mapper

• rowCountᅟ - Number of rows of the model that are mapped as the data for a pie series

• seriesᅟ - Pie series that is used by the mapper

• valuesColumnᅟ - Column of the model that is kept in sync with the values of the pie’s slices

Methods

• def __init__()

• def firstRow()

• def labelsColumn()

• def rowCount()

• def setFirstRow()

• def setLabelsColumn()

• def setRowCount()

• def setValuesColumn()

• def valuesColumn()

Signals

• def firstRowChanged()

• def labelsColumnChanged()

• def modelReplaced()

• def rowCountChanged()

• def seriesReplaced()

• def valuesColumnChanged()

Note

This documentation may contain snippets that were automatically translated from C++ to Python. We always welcome contributions to the snippet translation. If you see an issue with the translation, you can also let us know by creating a ticket on https:/bugreports.qt.io/projects/PYSIDE

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.

Note

Properties can be used directly when from __feature__ import true_property is used or via accessor functions otherwise.

property firstRowᅟ: int

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

The minimum and default value is 0.

Access functions:

• firstRow()

• setFirstRow()

• Signal firstRowChanged()

property labelsColumnᅟ: int

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

The default value is -1 (invalid mapping).

Access functions:

• labelsColumn()

• setLabelsColumn()

• Signal labelsColumnChanged()

property modelᅟ: QAbstractItemModel

This property holds The model that is used by the mapper..

Access functions:

• Signal modelReplaced()

property rowCountᅟ: 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).

Access functions:

• rowCount()

• setRowCount()

• Signal rowCountChanged()

property seriesᅟ: 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).

Access functions:

• Signal seriesReplaced()

property valuesColumnᅟ: int

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

The default value is -1 (invalid mapping).

Access functions:

• valuesColumn()

• setValuesColumn()

• Signal valuesColumnChanged()

__init__([parent=None])

Parameters:

parent – QObject

Constructs a mapper object that is a child of parent.

firstRow()

Return type:

int

See also

setFirstRow()

Getter of property firstRowᅟ .

firstRowChanged()

This signal is emitted when the first row changes.

Notification signal of property firstRowᅟ .

labelsColumn()

Return type:

int

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

See also

setLabelsColumn()

Getter of property labelsColumnᅟ .

labelsColumnChanged()

This signal is emitted when the labels column changes.

Notification signal of property labelsColumnᅟ .

modelReplaced()

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

Notification signal of property modelᅟ .

rowCount()

Return type:

int

See also

setRowCount()

Getter of property rowCountᅟ .

rowCountChanged()

This signal is emitted when the number of rows changes.

Notification signal of property rowCountᅟ .

seriesReplaced()

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

Notification signal of property seriesᅟ .

setFirstRow(firstRow)

Parameters:

firstRow – int

See also

firstRow()

Setter of property firstRowᅟ .

setLabelsColumn(labelsColumn)

Parameters:

labelsColumn – int

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

See also

labelsColumn()

Setter of property labelsColumnᅟ .

setRowCount(rowCount)

Parameters:

rowCount – int

See also

rowCount()

Setter of property rowCountᅟ .

setValuesColumn(valuesColumn)

Parameters:

valuesColumn – int

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

See also

valuesColumn()

Setter of property valuesColumnᅟ .

valuesColumn()

Return type:

int

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

See also

setValuesColumn()

Getter of property valuesColumnᅟ .

valuesColumnChanged()

This signal is emitted when the values column changes.

Notification signal of property valuesColumnᅟ .