QHPieModelMapper#
The QHPieModelMapper is a horizontal model mapper for pie series. More…
Synopsis#
Functions#
def
columnCount()def
firstColumn()def
labelsRow()def
setColumnCount(columnCount)def
setFirstColumn(firstColumn)def
setLabelsRow(labelsRow)def
setValuesRow(valuesRow)def
valuesRow()
Signals#
def
columnCountChanged()def
firstColumnChanged()def
labelsRowChanged()def
modelReplaced()def
seriesReplaced()def
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.
- class PySide6.QtCharts.QHPieModelMapper([parent=None])#
- Parameters
parent –
PySide6.QtCore.QObject
Constructs a mapper object that is a child of parent.
- PySide6.QtCharts.QHPieModelMapper.columnCount()#
- Return type
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).
- PySide6.QtCharts.QHPieModelMapper.columnCountChanged()#
This signal is emitted when the number of columns changes.
- PySide6.QtCharts.QHPieModelMapper.firstColumn()#
- Return type
int
This property holds The column of the model that contains the first slice value..
The minimum and default value is 0.
- PySide6.QtCharts.QHPieModelMapper.firstColumnChanged()#
This signal is emitted when the first column changes.
- PySide6.QtCharts.QHPieModelMapper.labelsRow()#
- Return type
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).
- PySide6.QtCharts.QHPieModelMapper.labelsRowChanged()#
This signal is emitted when the labels row changes.
- PySide6.QtCharts.QHPieModelMapper.modelReplaced()#
This signal is emitted when the model that the mapper is connected to changes.
- PySide6.QtCharts.QHPieModelMapper.seriesReplaced()#
This signal is emitted when the series that the mapper is connected to changes.
- PySide6.QtCharts.QHPieModelMapper.setColumnCount(columnCount)#
- Parameters
columnCount – 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).
- PySide6.QtCharts.QHPieModelMapper.setFirstColumn(firstColumn)#
- Parameters
firstColumn – int
This property holds The column of the model that contains the first slice value..
The minimum and default value is 0.
- PySide6.QtCharts.QHPieModelMapper.setLabelsRow(labelsRow)#
- Parameters
labelsRow – 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).
- PySide6.QtCharts.QHPieModelMapper.setValuesRow(valuesRow)#
- Parameters
valuesRow – 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).
- PySide6.QtCharts.QHPieModelMapper.valuesRow()#
- Return type
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).
- PySide6.QtCharts.QHPieModelMapper.valuesRowChanged()#
This signal is emitted when the values row changes.