Qt Documentation

Contents

QVBarModelMapper Class

Vertical model mapper for bar series. More...

Header: #include <QVBarModelMapper>
Instantiated By: VBarModelMapper
Inherits: QBarModelMapper

Properties

  • 1 property inherited from QObject

Public Functions

QVBarModelMapper(QObject *parent = Q_NULLPTR)
int firstBarSetColumn() const
int firstRow() const
int lastBarSetColumn() const
QAbstractItemModel *model() const
int rowCount() const
QAbstractBarSeries *series() const
void setFirstBarSetColumn(int firstBarSetColumn)
void setFirstRow(int firstRow)
void setLastBarSetColumn(int lastBarSetColumn)
void setModel(QAbstractItemModel *model)
void setRowCount(int rowCount)
void setSeries(QAbstractBarSeries *series)
  • 31 public functions inherited from QObject

Signals

void firstBarSetColumnChanged()
void firstRowChanged()
void lastBarSetColumnChanged()
void modelReplaced()
void rowCountChanged()
void seriesReplaced()

Additional Inherited Members

  • 1 public slot inherited from QObject
  • 11 static public members inherited from QObject
  • 14 protected functions inherited from QBarModelMapper
  • 9 protected functions inherited from QObject

Detailed Description

Vertical model mapper for bar series.

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 QAbstractBarSeries and QAbstractItemModel derived model object. Model mapper maintains equal size of all the BarSets. Adding/removing value from the BarSet causes the the same change in the rest of the BarSets added to the same series.

Note: Used model has to support adding/removing rows/columns and modifying the data of the cells.

Property Documentation

firstBarSetColumn : int

This property defines which column of the model is used as the data source for the first bar set.

Default value is: -1 (invalid mapping)

Access functions:

int firstBarSetColumn() const
void setFirstBarSetColumn(int firstBarSetColumn)

Notifier signal:

void firstBarSetColumnChanged()

firstRow : int

This property defines which row of the model contains the first values of the QBarSets in the series.

Minimal and default value is: 0

Access functions:

int firstRow() const
void setFirstRow(int firstRow)

Notifier signal:

void firstRowChanged()

lastBarSetColumn : int

This property defines which column of the model is used as the data source for the last bar set.

Default value is: -1 (invalid mapping)

Access functions:

int lastBarSetColumn() const
void setLastBarSetColumn(int lastBarSetColumn)

Notifier signal:

void lastBarSetColumnChanged()

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 QAbstractBarSeries.

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 : QAbstractBarSeries *

This property defines the QBarSeries 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:

QAbstractBarSeries *series() const
void setSeries(QAbstractBarSeries *series)

Notifier signal:

void seriesReplaced()

Member Function Documentation

QVBarModelMapper::QVBarModelMapper(QObject *parent = Q_NULLPTR)

Constructs a mapper object which is a child of parent.

[signal] void QVBarModelMapper::firstBarSetColumnChanged()

Emitted when the firstBarSetColumn has changed.

Note: Notifier signal for property firstBarSetColumn.

[signal] void QVBarModelMapper::firstRowChanged()

Emitted when the firstRow has changed.

Note: Notifier signal for property firstRow.

[signal] void QVBarModelMapper::lastBarSetColumnChanged()

Emitted when the lastBarSetColumn has changed.

Note: Notifier signal for property lastBarSetColumn.

[signal] void QVBarModelMapper::modelReplaced()

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

Note: Notifier signal for property model.

[signal] void QVBarModelMapper::rowCountChanged()

Emitted when the rowCount has changed.

Note: Notifier signal for property rowCount.

[signal] void QVBarModelMapper::seriesReplaced()

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

Note: Notifier signal for property series.

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