QXYModelMapper Class

The QXYModelMapper class is a model mapper for line, spline, and scatter series. 更多...

头：	`#include <QXYModelMapper>`
CMake:	`find_package(Qt6 REQUIRED COMPONENTS Graphs)` `target_link_libraries(mytarget PRIVATE Qt6::Graphs)`
qmake:	`QT += graphs`
在 QML：	XYModelMapper
继承：	QObject

所有成员列表，包括继承成员
QXYModelMapper is part of Qt Graphs C++ Classes for 2D .

特性

count : qsizetype
first : qsizetype
model : QAbstractItemModel*
orientation : Qt::Orientation

series : QXYSeries*
xSection : qsizetype
ySection : qsizetype

公共函数

qsizetype	count () const
qsizetype	first () const
QAbstractItemModel *	model () const
Qt::Orientation	orientation () const
QXYSeries *	series () const
void	setCount (qsizetype count )
void	setFirst (qsizetype first )
void	setModel (QAbstractItemModel * model )
void	setOrientation (Qt::Orientation orientation )
void	setSeries (QXYSeries * series )
void	setXSection (qsizetype xSection )
void	setYSection (qsizetype ySection )
qsizetype	xSection () const
qsizetype	ySection () const

信号

void	countChanged ()
void	firstChanged ()
void	modelChanged ()
void	orientationChanged ()
void	seriesChanged ()
void	xSectionChanged ()
void	ySectionChanged ()

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 graph. A model mapper is used to create a connection between a line, spline, or scatter series. A TableModel is a natural choice for the model.

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

另请参阅 QXYSeries .

特性文档编制

count : qsizetype

This property holds the number of rows 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 rows in the model).

访问函数：

qsizetype	count () const
void	setCount (qsizetype count )

通知程序信号：

void	countChanged ()

另请参阅 QXYModelMapper::orientation .

first : qsizetype

This property holds the row of the model that contains the data for the first point of the series.

最小且默认值为 0。

访问函数：

qsizetype	第一 () const
void	setFirst (qsizetype first )

通知程序信号：

void	firstChanged ()

另请参阅 QXYModelMapper::orientation .

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	modelChanged ()

orientation : Qt::Orientation

Tells the modelmapper how to map data from a model. If Qt::Vertical is used, each of the model's columns defines a bar set, and the model's rows define the categories. When the orientation is set to Qt::Horizontal , each of the model's rows defines a bar set, and the model's columns define categories.

默认值为 Qt::Vertical

访问函数：

Qt::Orientation	orientation () const
void	setOrientation (Qt::Orientation orientation )

通知程序信号：

void	orientationChanged ()

series : 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).

访问函数：

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

通知程序信号：

void	seriesChanged ()

xSection : qsizetype

This property holds the section of the model that contains the x-coordinates of data points.

默认值为 -1 (无效映射)。

访问函数：

qsizetype	xSection () const
void	setXSection (qsizetype xSection )

通知程序信号：

void	xSectionChanged ()

另请参阅 QXYModelMapper::orientation .

ySection : qsizetype

This property holds the section of the model that contains the y-coordinates of data points.

默认值为 -1 (无效映射)。

访问函数：

qsizetype	ySection () const
void	setYSection (qsizetype ySection )

通知程序信号：

void	ySectionChanged ()

另请参阅 QXYModelMapper::orientation .