Qt Documentation

Contents

QHXYModelMapper Class

Horizontal model mapper for QXYSeries. More...

Header: #include <QHXYModelMapper>
Instantiated By: HXYModelMapper
Inherits: QXYModelMapper

Properties

  • 1 property inherited from QObject

Public Functions

QHXYModelMapper(QObject *parent = Q_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()

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

Horizontal model mapper for QXYSeries.

Model mappers allow you to use QAbstractItemModel derived models as a data source for a chart series. Horizontal 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

columnCount : int

This property defines the number of columns of the model that are mapped as the data for series.

Minimal and default value is: -1 (count 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 defines which column of the model contains the data for the first point of the series.

Minimal and default value is: 0

Access functions:

int firstColumn() const
void setFirstColumn(int firstColumn)

Notifier signal:

void firstColumnChanged()

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()

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()

xRow : int

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

Default value is: -1 (invalid mapping)

Access functions:

int xRow() const
void setXRow(int xRow)

Notifier signal:

void xRowChanged()

yRow : int

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

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 = Q_NULLPTR)

Constructs a mapper object which is a child of parent.

[signal] void QHXYModelMapper::columnCountChanged()

Emitted when the columnCount has changed.

Note: Notifier signal for property columnCount.

[signal] void QHXYModelMapper::firstColumnChanged()

Emitted when the firstColumn has changed.

Note: Notifier signal for property firstColumn.

[signal] void QHXYModelMapper::modelReplaced()

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

Note: Notifier signal for property model.

[signal] void QHXYModelMapper::seriesReplaced()

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

Note: Notifier signal for property series.

[signal] void QHXYModelMapper::xRowChanged()

Emitted when the xRow has changed.

Note: Notifier signal for property xRow.

[signal] void QHXYModelMapper::yRowChanged()

Emitted when the yRow has changed.

Note: Notifier signal for property yRow.

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