QHXYModelMapper Class
The QHXYModelMapper class is a horizontal model mapper for line, spline, and scatter series. More...
| Header: | #include <QHXYModelMapper> |
| Instantiated By: | HXYModelMapper |
| Inherits: | QXYModelMapper |
Properties
|
- 1 property inherited from QObject
Public Functions
| QHXYModelMapper(QObject *parent = nullptr) | |
| int | columnCount() const |
| int | firstColumn() const |
| QAbstractItemModel * | model() const |
| QXYSeries * | series() const |
| void | setColumnCount(int columnCount) |
| void | setFirstColumn(int firstColumn) |
| void | setModel(QAbstractItemModel *model) |
| void | setSeries(QXYSeries *series) |
| void | setXRow(int xRow) |
| void | setYRow(int yRow) |
| int | xRow() const |
| int | yRow() const |
- 31 public functions inherited from QObject
Signals
| void | columnCountChanged() |
| void | firstColumnChanged() |
| void | modelReplaced() |
| void | seriesReplaced() |
| void | xRowChanged() |
| void | yRowChanged() |
- 2 signals inherited from QObject
Static Public Members
| const QMetaObject | staticMetaObject |
- 9 static public members inherited from QObject
Additional Inherited Members
Detailed Description
The QHXYModelMapper class is a horizontal model mapper for line, spline, and scatter series.
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 line, spline, or scatter series and the data model that holds the consecutive data point coordinates on rows.
Both model and series properties can be used to manipulate the data. The model mapper keeps the series and the data model in sync.
See also QVXYModelMapper and QXYSeries.
Property Documentation
columnCount : int
This property holds the number of columns of the model that are mapped as the data for series.
The minimum and default value is -1 (the number is limited by the number of columns in the model).
Access functions:
| int | columnCount() const |
| void | setColumnCount(int columnCount) |
Notifier signal:
| void | columnCountChanged() |
firstColumn : int
This property holds the column of the model that contains the data for the first point of the series.
The minimum and default value is 0.
Access functions:
| int | firstColumn() const |
| void | setFirstColumn(int firstColumn) |
Notifier signal:
| void | firstColumnChanged() |
model : QAbstractItemModel*
This property holds the model that is used by the mapper.
Access functions:
| QAbstractItemModel * | model() const |
| void | setModel(QAbstractItemModel *model) |
Notifier signal:
| void | modelReplaced() |
series : QtCharts::QXYSeries*
This property holds the 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:
| QXYSeries * | series() const |
| void | setSeries(QXYSeries *series) |
Notifier signal:
| void | seriesReplaced() |
xRow : int
This property holds the row of the model that contains the x-coordinates of the data points.
The default value is -1 (invalid mapping).
Access functions:
| int | xRow() const |
| void | setXRow(int xRow) |
Notifier signal:
| void | xRowChanged() |
yRow : int
This property holds the row of the model that contains the y-coordinates of the data points.
The default value is -1 (invalid mapping).
Access functions:
| int | yRow() const |
| void | setYRow(int yRow) |
Notifier signal:
| void | yRowChanged() |
Member Function Documentation
QHXYModelMapper::QHXYModelMapper(QObject *parent = nullptr)
Constructs a mapper object that is a child of parent.
[signal] void QHXYModelMapper::columnCountChanged()
This signal is emitted when the number of columns changes.
Note: Notifier signal for property columnCount.
[signal] void QHXYModelMapper::firstColumnChanged()
This signal is emitted when the first column changes.
Note: Notifier signal for property firstColumn.
[signal] void QHXYModelMapper::modelReplaced()
This signal is emitted when the model that the mapper is connected to changes.
Note: Notifier signal for property model.
[signal] void QHXYModelMapper::seriesReplaced()
This signal is emitted when the series that the mapper is connected to changes.
Note: Notifier signal for property series.
[signal] void QHXYModelMapper::xRowChanged()
This signal is emitted when the row that contains the x-coordinates of data points changes.
Note: Notifier signal for property xRow.
[signal] void QHXYModelMapper::yRowChanged()
This signal is emitted when the row that contains the y-coordinates of data points changes.
Note: Notifier signal for property yRow.
© 2021 The Qt Company Ltd. Documentation contributions included herein are the copyrights of their respective owners. The documentation provided herein is licensed under the terms of the GNU Free Documentation License version 1.3 as published by the Free Software Foundation. Qt and respective logos are trademarks of The Qt Company Ltd. in Finland and/or other countries worldwide. All other trademarks are property of their respective owners.