QHBoxPlotModelMapper 类

QHBoxPlotModelMapper 类是框形图系列的水平模型映射器。 更多...

头: #include <QHBoxPlotModelMapper>
实例化: HBoxPlotModelMapper
继承: QObject

特性

公共函数

QHBoxPlotModelMapper (QObject * parent = nullptr)
int columnCount () const
int firstBoxSetRow () const
int firstColumn () const
int lastBoxSetRow () const
QAbstractItemModel * model () const
QBoxPlotSeries * series () const
void setColumnCount (int rowCount )
void setFirstBoxSetRow (int firstBoxSetRow )
void setFirstColumn (int firstColumn )
void setLastBoxSetRow (int lastBoxSetRow )
void setModel (QAbstractItemModel * model )
void setSeries (QBoxPlotSeries * series )

信号

void columnCountChanged ()
void firstBoxSetRowChanged ()
void firstColumnChanged ()
void lastBoxSetRowChanged ()
void modelReplaced ()
void seriesReplaced ()

详细描述

模型映射器允许使用的数据模型派生自 QAbstractItemModel class as a data source for a chart. A horizontal model mapper is used to create a connection between a data model and QBoxPlotSeries object, so that each row in the data model defines a box-and-whiskers item and each column maps to the range and three median values of the box-and-whiskers item.

Both model and series properties can be used to manipulate the data. The model mapper keeps the series and the data model in sync.

The model mapper ensures that all the box-and-whiskers items in the box plot series have equal sizes. Therefore, adding or removing a value from a box-and-whiskers item causes the same change to be made in all the box-and-whiskers items in the box plot series.

另请参阅 QVBoxPlotModelMapper .

特性文档编制

columnCount : int

This property holds the number of columns of the model that are mapped as the data for the box plot series.

The minimum and default value is -1 (number limited to the number of columns in the model).

访问函数:

int columnCount () const
void setColumnCount (int rowCount )

通知程序信号:

void columnCountChanged ()

firstBoxSetRow : int

This property holds the row of the model that is used as the data source for the first box-and-whiskers item.

默认值为 -1 (无效映射)。

访问函数:

int firstBoxSetRow () const
void setFirstBoxSetRow (int firstBoxSetRow )

通知程序信号:

void firstBoxSetRowChanged ()

firstColumn : int

This property holds the column of the model that contains the first values of the box-and-whiskers items in the box plot series.

最小且默认值为 0。

访问函数:

int firstColumn () const
void setFirstColumn (int firstColumn )

通知程序信号:

void firstColumnChanged ()

lastBoxSetRow : int

This property holds the row of the model that is used as the data source for the last box-and-whiskers item.

默认值为 -1 (无效映射)。

访问函数:

int lastBoxSetRow () const
void setLastBoxSetRow (int lastBoxSetRow )

通知程序信号:

void lastBoxSetRowChanged ()

model : QAbstractItemModel *

此特性保持映射器使用的模型。

访问函数:

QAbstractItemModel * model () const
void setModel (QAbstractItemModel * model )

通知程序信号:

void modelReplaced ()

series : QBoxPlotSeries *

This property holds the box plot 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).

访问函数:

QBoxPlotSeries * series () const
void setSeries (QBoxPlotSeries * series )

通知程序信号:

void seriesReplaced ()

成员函数文档编制

[explicit] QHBoxPlotModelMapper:: QHBoxPlotModelMapper ( QObject * parent = nullptr)

构造映射器对象为子级化 parent .

[signal] void QHBoxPlotModelMapper:: columnCountChanged ()

This signal is emitted when the number of columns changes.

注意: 通知程序信号对于特性 columnCount .

[signal] void QHBoxPlotModelMapper:: firstBoxSetRowChanged ()

This signal is emitted when the first box-and-whiskers item row changes.

注意: 通知程序信号对于特性 firstBoxSetRow .

[signal] void QHBoxPlotModelMapper:: firstColumnChanged ()

This signal is emitted when the first column changes.

注意: 通知程序信号对于特性 firstColumn .

[signal] void QHBoxPlotModelMapper:: lastBoxSetRowChanged ()

This signal is emitted when the last box-and-whiskers item row changes.

注意: 通知程序信号对于特性 lastBoxSetRow .

[signal] void QHBoxPlotModelMapper:: modelReplaced ()

This signal is emitted when the model that the mapper is connected to changes.

注意: 通知程序信号对于特性 model .

[signal] void QHBoxPlotModelMapper:: seriesReplaced ()

This signal is emitted when the series that the mapper is connected to changes.

注意: 通知程序信号对于特性 series .