class QHPieModelMapper

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

Synopsis

Properties

• columnCountᅟ - Number of columns of the model that are mapped as the data for the pie series

• firstColumnᅟ - Column of the model that contains the first slice value

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

• modelᅟ - That is used by the mapper

• seriesᅟ - Pie series that is used by the mapper

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

Methods

• def __init__()

• def columnCount()

• def firstColumn()

• def labelsRow()

• def setColumnCount()

• def setFirstColumn()

• def setLabelsRow()

• def setValuesRow()

• def valuesRow()

Signals

• def columnCountChanged()

• def firstColumnChanged()

• def labelsRowChanged()

• def modelReplaced()

• def seriesReplaced()

• def valuesRowChanged()

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 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.

Note

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

property columnCountᅟ: int

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

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

Access functions:

• columnCount()

• setColumnCount()

• Signal columnCountChanged()

property firstColumnᅟ: int

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

The minimum and default value is 0.

Access functions:

• firstColumn()

• setFirstColumn()

• Signal firstColumnChanged()

property labelsRowᅟ: int

This property holds The row 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:

• labelsRow()

• setLabelsRow()

• Signal labelsRowChanged()

property modelᅟ: QAbstractItemModel

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

Access functions:

• Signal modelReplaced()

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 valuesRowᅟ: int

This property holds The row 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:

• valuesRow()

• setValuesRow()

• Signal valuesRowChanged()

__init__([parent=None])

Parameters:

parent – QObject

Constructs a mapper object that is a child of parent.

columnCount()

Return type:

int

See also

setColumnCount()

Getter of property columnCountᅟ .

columnCountChanged()

This signal is emitted when the number of columns changes.

Notification signal of property columnCountᅟ .

firstColumn()

Return type:

int

See also

setFirstColumn()

Getter of property firstColumnᅟ .

firstColumnChanged()

This signal is emitted when the first column changes.

Notification signal of property firstColumnᅟ .

labelsRow()

Return type:

int

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

See also

setLabelsRow()

Getter of property labelsRowᅟ .

labelsRowChanged()

This signal is emitted when the labels row changes.

Notification signal of property labelsRowᅟ .

modelReplaced()

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

Notification signal of property modelᅟ .

seriesReplaced()

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

Notification signal of property seriesᅟ .

setColumnCount(columnCount)

Parameters:

columnCount – int

See also

columnCount()

Setter of property columnCountᅟ .

setFirstColumn(firstColumn)

Parameters:

firstColumn – int

See also

firstColumn()

Setter of property firstColumnᅟ .

setLabelsRow(labelsRow)

Parameters:

labelsRow – int

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

See also

labelsRow()

Setter of property labelsRowᅟ .

setValuesRow(valuesRow)

Parameters:

valuesRow – int

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

See also

valuesRow()

Setter of property valuesRowᅟ .

valuesRow()

Return type:

int

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

See also

setValuesRow()

Getter of property valuesRowᅟ .

valuesRowChanged()

This signal is emitted when the values row changes.

Notification signal of property valuesRowᅟ .