Qt Documentation

Contents

QVXYModelMapper Class

Vertical model mapper for QXYSeries. More...

Header: #include <QVXYModelMapper>
Instantiated By: VXYModelMapper
Inherits: QXYModelMapper

Properties

  • 1 property inherited from QObject

Public Functions

QVXYModelMapper(QObject *parent = Q_NULLPTR)
int firstRow() const
QAbstractItemModel *model() const
int rowCount() const
QXYSeries *series() const
void setFirstRow(int firstRow)
void setModel(QAbstractItemModel *model)
void setRowCount(int rowCount)
void setSeries(QXYSeries *series)
void setXColumn(int xColumn)
void setYColumn(int yColumn)
int xColumn() const
int yColumn() const
  • 31 public functions inherited from QObject

Signals

void firstRowChanged()
void modelReplaced()
void rowCountChanged()
void seriesReplaced()
void xColumnChanged()
void yColumnChanged()

Additional Inherited Members

  • 1 public slot inherited from QObject
  • 11 static public members inherited from QObject
  • 6 protected functions inherited from QXYModelMapper
  • 9 protected functions inherited from QObject

Detailed Description

Vertical model mapper for QXYSeries.

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 QXYSeries and QAbstractItemModel derived model object. It is possible to use both QAbstractItemModel and QXYSeries model API. QXYModelMapper makes sure that QXYSeries 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 data for the first point of the series.

Minimal and default value is: 0

Access functions:

int firstRow() const
void setFirstRow(int firstRow)

Notifier signal:

void firstRowChanged()

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 series.

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 : QXYSeries *

This property defines the QXYSeries 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:

QXYSeries *series() const
void setSeries(QXYSeries *series)

Notifier signal:

void seriesReplaced()

xColumn : int

This property defines which column of the model is kept in sync with the x values of QXYSeries.

Default value is: -1 (invalid mapping)

Access functions:

int xColumn() const
void setXColumn(int xColumn)

Notifier signal:

void xColumnChanged()

yColumn : int

This property defines which column of the model is kept in sync with the y values of QXYSeries.

Default value is: -1 (invalid mapping)

Access functions:

int yColumn() const
void setYColumn(int yColumn)

Notifier signal:

void yColumnChanged()

Member Function Documentation

QVXYModelMapper::QVXYModelMapper(QObject *parent = Q_NULLPTR)

Constructs a mapper object which is a child of parent.

[signal] void QVXYModelMapper::firstRowChanged()

Emitted when the firstRow has changed.

Note: Notifier signal for property firstRow.

[signal] void QVXYModelMapper::modelReplaced()

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

Note: Notifier signal for property model.

[signal] void QVXYModelMapper::rowCountChanged()

Emitted when the rowCount has changed.

Note: Notifier signal for property rowCount.

[signal] void QVXYModelMapper::seriesReplaced()

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

Note: Notifier signal for property series.

[signal] void QVXYModelMapper::xColumnChanged()

Emitted when the xColumn has changed.

Note: Notifier signal for property xColumn.

[signal] void QVXYModelMapper::yColumnChanged()

Emitted when the yColumn has changed.

Note: Notifier signal for property yColumn.

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