QXYSeries 类

The QXYSeries class is a parent class for all x & y series classes. 更多...

头：	#include <QXYSeries>
CMake:	find_package(Qt6 REQUIRED COMPONENTS Graphs) target_link_libraries(mytarget PRIVATE Qt6::Graphs)
qmake:	QT += graphs
实例化：	XYSeries
继承：	QAbstractSeries
继承者：	QLineSeries and QScatterSeries
状态：	技术预览

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

特性

axisX : QAbstractAxis*
axisY : QAbstractAxis*
color : QColor

markerSize : qreal
pointMarker : QQmlComponent*
selectedColor : QColor

公共函数

void	append (qreal x , qreal y )
void	append (const QPointF & point )
void	append (const QList<QPointF> & points )
const QPointF &	at (int index ) const
QAbstractAxis *	axisX () const
QAbstractAxis *	axisY () const
void	clear ()
virtual QColor	color () const
int	count () const
void	deselectAllPoints ()
void	deselectPoint (int index )
void	deselectPoints (const QList<int> & indexes )
void	insert (int index , const QPointF & point )
bool	isPointSelected (int index )
qreal	markerSize () const
QQmlComponent *	pointMarker () const
QList<QPointF>	points () const
void	remove (qreal x , qreal y )
void	remove (const QPointF & point )
void	remove (int index )
void	removePoints (int index , int count )
void	replace (qreal oldX , qreal oldY , qreal newX , qreal newY )
void	replace (const QPointF & oldPoint , const QPointF & newPoint )
void	replace (int index , qreal newX , qreal newY )
void	replace (int index , const QPointF & newPoint )
void	replace (const QList<QPointF> & points )
void	selectAllPoints ()
void	selectPoint (int index )
void	selectPoints (const QList<int> & indexes )
QColor	selectedColor () const
QList<int>	selectedPoints () const
void	setAxisX (QAbstractAxis * axis )
void	setAxisY (QAbstractAxis * axis )
virtual void	setColor (const QColor & newColor )
void	setMarkerSize (qreal size )
void	setPointMarker (QQmlComponent * newPointMarker )
void	setPointSelected (int index , bool selected )
void	setSelectedColor (const QColor & color )
void	toggleSelection (const QList<int> & indexes )

信号

void	axisXChanged ()
void	axisYChanged ()
void	colorChanged (QColor color )
void	markerSizeChanged (qreal size )
void	pointMarkerChanged ()
void	pointReplaced (int index )
void	selectedColorChanged (const QColor & color )

详细描述

In QXYSeries, data points are defined as a list of QPointF , defining X and Y positions.

另请参阅 QLineSeries and QScatterSeries .

特性文档编制

axisX : QAbstractAxis *

X-axis of the series.

The x-axis used for the series. This should be QValueAxis .

访问函数：

QAbstractAxis *	axisX () const
void	setAxisX (QAbstractAxis * axis )

通知程序信号：

void	axisXChanged ()

axisY : QAbstractAxis *

Y-axis of the series.

The y-axis used for the series. This should be QValueAxis .

访问函数：

QAbstractAxis *	axisY () const
void	setAxisY (QAbstractAxis * axis )

通知程序信号：

void	axisYChanged ()

color : QColor

This property holds the main color of the series. For QLineSeries this means the line color and for QScatterSeries the color of the point.

访问函数：

virtual QColor	color () const
virtual void	setColor (const QColor & newColor )

通知程序信号：

void	colorChanged (QColor color )

markerSize : qreal

This property holds the size of the point marker in pixels when using a default circle as a marker. When using pointMarker , the size is defined by the pointMarker conponent.

访问函数：

qreal	markerSize () const
void	setMarkerSize (qreal size )

通知程序信号：

void	markerSizeChanged (qreal size )

pointMarker : QQmlComponent *

This property holds a custom QML Component used as a marker for data points.

访问函数：

QQmlComponent *	pointMarker () const
void	setPointMarker (QQmlComponent * newPointMarker )

通知程序信号：

void	pointMarkerChanged ()

selectedColor : QColor

This property holds the main color of the selected series. For QLineSeries this means the line color and for QScatterSeries the color of the point.

访问函数：

QColor	selectedColor () const
void	setSelectedColor (const QColor & color )

通知程序信号：

void	selectedColorChanged (const QColor & color )

成员函数文档编制

void QXYSeries:: append ( qreal x , qreal y )

Appends a point with the coordinates x and y 到系列。

void QXYSeries:: append (const QPointF & point )

Appends a point with the coordinates point 到系列。

void QXYSeries:: append (const QList < QPointF > & points )

Appends points with the coordinates points 到系列。

const QPointF &QXYSeries:: at ( int index ) const

Returns the point at the position specified by index . Returns (0, 0) if the index is not valid.

void QXYSeries:: clear ()

从系列删除所有点。

int QXYSeries:: count () const

返回系列中的数据点数。

void QXYSeries:: deselectAllPoints ()

Deselects all points in the series.

注意： Emits QXYSeries::selectedPointsChanged

另请参阅 setPointSelected ().

void QXYSeries:: deselectPoint ( int index )

Deselects point at given index .

注意： Emits QXYSeries::selectedPointsChanged

另请参阅 setPointSelected ().

void QXYSeries:: deselectPoints (const QList < int > & indexes )

Marks multiple points passed in a indexes list as deselected.

注意： Emits QXYSeries::selectedPointsChanged

另请参阅 setPointSelected ().

void QXYSeries:: insert ( int index , const QPointF & point )

Inserts a point with the coordinates point to the position specified by index in the series. If the index is 0 or less than 0, the point is prepended to the list of points. If the index is equal to or greater than than the number of points in the series, the point is appended to the list of points.

bool QXYSeries:: isPointSelected ( int index )

Returns true if point at given index is among selected points and false otherwise.

注意： Selected points are drawn using the selected color if it was specified.

另请参阅 selectedPoints (), setPointSelected ()，和 setSelectedColor ().

`[signal]` void QXYSeries:: pointReplaced ( int index )

This signal is emitted when a point is replaced at the position specified by index .

另请参阅 replace ().

QList < QPointF > QXYSeries:: points () const

Returns the points in the series.

void QXYSeries:: remove ( qreal x , qreal y )

Removes the point with the coordinates x and y from the series. Does nothing if the point does not exist.

void QXYSeries:: remove (const QPointF & point )

Removes the point with the coordinates point from the series. Does nothing if the point does not exist.

void QXYSeries:: remove ( int index )

Removes the point at the position specified by index from the series.

void QXYSeries:: removePoints ( int index , int count )

Removes the number of points specified by count from the series starting at the position specified by index .

void QXYSeries:: replace ( qreal oldX , qreal oldY , qreal newX , qreal newY )

Replaces the point with the coordinates oldX and oldY with the point with the coordinates newX and newY . Does nothing if the old point does not exist.

void QXYSeries:: replace (const QPointF & oldPoint , const QPointF & newPoint )

Replaces the point with the coordinates oldPoint with the point with the coordinates newPoint . Does nothing if the old point does not exist.

void QXYSeries:: replace ( int index , qreal newX , qreal newY )

Replaces the point at the position specified by index with the point that has the coordinates newX and newY .

void QXYSeries:: replace ( int index , const QPointF & newPoint )

Replaces the point at the position specified by index with the point that has the coordinates newPoint .

void QXYSeries:: replace (const QList < QPointF > & points )

Replaces the current points with the points specified by points

注意： This is much faster than replacing data points one by one, or first clearing all data, and then appending the new data. Emits pointReplaced when the points have been replaced.

void QXYSeries:: selectAllPoints ()

Marks all points in the series as selected,

注意： Emits QXYSeries::selectedPointsChanged

另请参阅 setPointSelected ().

void QXYSeries:: selectPoint ( int index )

Marks point at index as selected.

注意： Emits QXYSeries::selectedPointsChanged

另请参阅 setPointSelected ().

void QXYSeries:: selectPoints (const QList < int > & indexes )

Marks multiple points passed in a indexes list as selected.

注意： Emits QXYSeries::selectedPointsChanged

另请参阅 setPointSelected ().

QList < int > QXYSeries:: selectedPoints () const

Returns a list of points indexes marked as selected. Selected points are visible regardless of points visibility.

另请参阅 setPointSelected ().

void QXYSeries:: setPointSelected ( int index , bool selected )

Marks point at given index as either selected or deselected as specified by selected .

注意： Selected points are drawn using the selected color if it was specified. Emits QXYSeries::selectedPointsChanged

另请参阅 isPointSelected (), selectAllPoints ()，和 setSelectedColor ().

void QXYSeries:: toggleSelection (const QList < int > & indexes )

Changes selection state of points at given indexes to the opposite one.

注意： Emits QXYSeries::selectedPointsChanged

另请参阅 setPointSelected ().

QXYSeries 类

特性

公共函数

信号

详细描述

特性文档编制

axisX : QAbstractAxis *

axisY : QAbstractAxis *

color : QColor

markerSize : qreal

pointMarker : QQmlComponent *

selectedColor : QColor

成员函数文档编制

void QXYSeries:: append ( qreal x , qreal y )

void QXYSeries:: append (const QPointF & point )

void QXYSeries:: append (const QList < QPointF > & points )

const QPointF &QXYSeries:: at ( int index ) const

void QXYSeries:: clear ()

int QXYSeries:: count () const

void QXYSeries:: deselectAllPoints ()

void QXYSeries:: deselectPoint ( int index )

void QXYSeries:: deselectPoints (const QList < int > & indexes )

void QXYSeries:: insert ( int index , const QPointF & point )

bool QXYSeries:: isPointSelected ( int index )

[signal] void QXYSeries:: pointReplaced ( int index )

QList < QPointF > QXYSeries:: points () const

void QXYSeries:: remove ( qreal x , qreal y )

void QXYSeries:: remove (const QPointF & point )

void QXYSeries:: remove ( int index )

void QXYSeries:: removePoints ( int index , int count )

void QXYSeries:: replace ( qreal oldX , qreal oldY , qreal newX , qreal newY )

void QXYSeries:: replace (const QPointF & oldPoint , const QPointF & newPoint )

void QXYSeries:: replace ( int index , qreal newX , qreal newY )

void QXYSeries:: replace ( int index , const QPointF & newPoint )

void QXYSeries:: replace (const QList < QPointF > & points )

void QXYSeries:: selectAllPoints ()

void QXYSeries:: selectPoint ( int index )

void QXYSeries:: selectPoints (const QList < int > & indexes )

QList < int > QXYSeries:: selectedPoints () const

void QXYSeries:: setPointSelected ( int index , bool selected )

void QXYSeries:: toggleSelection (const QList < int > & indexes )

内容

`[signal]` void QXYSeries:: pointReplaced ( int index )