内容

• 公共类型
• 特性
• 公共函数
• 信号
• 详细描述

QLegendMarker Class

The QLegendMarker class is an abstract object that can be used to access markers within a legend. 更多...

头：	#include <QLegendMarker>
继承：	QObject
继承者：	QAreaLegendMarker , QBarLegendMarker , QBoxPlotLegendMarker , QCandlestickLegendMarker , QPieLegendMarker ，和 QXYLegendMarker

• 所有成员列表，包括继承成员

公共类型

enum	LegendMarkerType { LegendMarkerTypeArea, LegendMarkerTypeBar, LegendMarkerTypePie, LegendMarkerTypeXY, LegendMarkerTypeBoxPlot, LegendMarkerTypeCandlestick }

特性

brush : QBrush font : QFont label : QString labelBrush : QBrush

pen : QPen shape : QLegend::MarkerShape visible : bool

• 1 特性继承自 QObject

公共函数

virtual	~QLegendMarker ()
QBrush	brush () const
QFont	font () const
bool	isVisible () const
QString	label () const
QBrush	labelBrush () const
QPen	pen () const
virtual QAbstractSeries *	series () = 0
void	setBrush (const QBrush & brush )
void	setFont (const QFont & font )
void	setLabel (const QString & label )
void	setLabelBrush (const QBrush & brush )
void	setPen (const QPen & pen )
void	setShape (QLegend::MarkerShape shape )
void	setVisible (bool visible )
QLegend::MarkerShape	shape () const
virtual LegendMarkerType	type () = 0

• 32 公共函数继承自 QObject

信号

void	brushChanged ()
void	clicked ()
void	fontChanged ()
void	hovered (bool status )
void	labelBrushChanged ()
void	labelChanged ()
void	penChanged ()
void	shapeChanged ()
void	visibleChanged ()

• 2 信号继承自 QObject

额外继承成员

• 1 公共槽继承自 QObject
• 11 静态公共成员继承自 QObject
• 9 保护函数继承自 QObject

详细描述

The QLegendMarker class is an abstract object that can be used to access markers within a legend.

A legend marker consists of an icon and a label. The icon color corresponds to the color used to draw a series and the label displays the name of the series (or the label of the slice for a pie series or bar set for a bar series). A legend marker is always related to one series, slice, or bar set.

另请参阅 QLegend .

成员类型文档编制

enum QLegendMarker:: LegendMarkerType

The type of the legend marker object.

常量	值	描述
QLegendMarker::LegendMarkerTypeArea	0	A legend marker for an area series.
QLegendMarker::LegendMarkerTypeBar	1	A legend marker for a bar set.
QLegendMarker::LegendMarkerTypePie	2	A legend marker for a pie slice.
QLegendMarker::LegendMarkerTypeXY	3	A legend marker for a line, spline, or scatter series.
QLegendMarker::LegendMarkerTypeBoxPlot	4	A legend marker for a box plot series.
QLegendMarker::LegendMarkerTypeCandlestick	5	A legend marker for a candlestick series.

该枚举在 Qt 5.8 引入或被修改。

特性文档编制

brush : QBrush

This property holds the brush used to fill the icon.

访问函数：

QBrush	brush () const
void	setBrush (const QBrush & brush )

通知程序信号：

void	brushChanged ()

font : QFont

This property holds the font of the label.

访问函数：

QFont	font () const
void	setFont (const QFont & font )

通知程序信号：

void	fontChanged ()

label : QString

This property holds the text shown in the legend for a legend marker.

访问函数：

QString	label () const
void	setLabel (const QString & label )

通知程序信号：

void	labelChanged ()

labelBrush : QBrush

This property holds the brush of the label.

访问函数：

QBrush	labelBrush () const
void	setLabelBrush (const QBrush & brush )

通知程序信号：

void	labelBrushChanged ()

pen : QPen

This property holds the pen used to draw the outline of the icon.

访问函数：

QPen	pen () const
void	setPen (const QPen & pen )

通知程序信号：

void	penChanged ()

shape : QLegend::MarkerShape

The shape of the legend marker. Defaults to QLegend::MarkerShapeDefault , which indicates the shape is determined by QLegend::markerShape 特性。

访问函数：

QLegend::MarkerShape	shape () const
void	setShape (QLegend::MarkerShape shape )

通知程序信号：

void	shapeChanged ()

visible : bool

This property holds the visibility of the legend marker.

The visibility affects both the legend marker label and the icon.

访问函数：

bool	isVisible () const
void	setVisible (bool visible )

通知程序信号：

void	visibleChanged ()

成员函数文档编制

[虚拟] QLegendMarker:: ~QLegendMarker ()

Removes the legend marker.

QBrush QLegendMarker:: brush () const

Returns the brush used to fill the icon.

注意： Getter 函数对于特性 brush .

另请参阅 setBrush ().

[signal] void QLegendMarker:: brushChanged ()

This signal is emitted when the brush of the legend marker has changed.

注意： 通知程序信号对于特性 brush .

[signal] void QLegendMarker:: clicked ()

This signal is emitted when the legend marker is clicked.

QFont QLegendMarker:: font () const

Retuns the font of the label.

注意： Getter 函数对于特性 font .

另请参阅 setFont ().

[signal] void QLegendMarker:: fontChanged ()

This signal is emitted when the (label) font of the legend marker has changed.

注意： 通知程序信号对于特性 font .

[signal] void QLegendMarker:: hovered ( bool status )

This signal is emitted when a mouse is hovered over the legend marker. When the mouse moves over the marker, status turns true , and when the mouse moves away again, it turns false .

bool QLegendMarker:: isVisible () const

Returns the visibility of the marker.

注意： Getter 函数对于特性 visible .

QString QLegendMarker:: label () const

Returns the label of the marker.

注意： Getter 函数对于特性 label .

另请参阅 setLabel ().

QBrush QLegendMarker:: labelBrush () const

Returns the brush that is used to draw the label.

注意： Getter 函数对于特性 labelBrush .

另请参阅 setLabelBrush ().

[signal] void QLegendMarker:: labelBrushChanged ()

This signal is emitted when the label brush of the legend marker has changed.

注意： 通知程序信号对于特性 labelBrush .

[signal] void QLegendMarker:: labelChanged ()

This signal is emitted when the label of the legend marker has changed.

注意： 通知程序信号对于特性 label .

QPen QLegendMarker:: pen () const

Returns the pen used to draw the outline of the icon.

注意： Getter 函数对于特性 pen .

另请参阅 setPen ().

[signal] void QLegendMarker:: penChanged ()

This signal is emitted when the pen of the legend marker has changed.

注意： 通知程序信号对于特性 pen .

[pure virtual] QAbstractSeries *QLegendMarker:: series ()

Returns a pointer to the series that is related to this legend marker. A legend marker is always related to a series.

void QLegendMarker:: setBrush (const QBrush & brush )

Sets the brush used to fill the icon to brush .

注意： Changing the color of the series also changes the color of the icon.

注意： Setter 函数对于特性 brush .

另请参阅 brush ().

void QLegendMarker:: setFont (const QFont & font )

Sets the font of the label to font .

注意： Setter 函数对于特性 font .

另请参阅 font ().

void QLegendMarker:: setLabel (const QString & label )

Sets the label of the marker to label .

注意： Changing the name of a series also changes the label of its marker.

注意： Setter 函数对于特性 label .

另请参阅 label ().

void QLegendMarker:: setLabelBrush (const QBrush & brush )

Sets the the brush used to draw to label to brush .

注意： Setter 函数对于特性 labelBrush .

另请参阅 labelBrush ().

void QLegendMarker:: setPen (const QPen & pen )

设置 pen used to draw the outline of the icon to pen .

注意： Setter 函数对于特性 pen .

另请参阅 pen ().

void QLegendMarker:: setVisible ( bool visible )

Sets the marker's visibility to visible .

注意： Setter 函数对于特性 visible .

另请参阅 isVisible ().

[pure virtual] LegendMarkerType QLegendMarker:: type ()

Returns the type of the legend marker for the related series, pie slice, or bar set.

另请参阅 LegendMarkerType .

[signal] void QLegendMarker:: visibleChanged ()

This signal is emitted when the visibility of the legend marker has changed.

注意： 通知程序信号对于特性 visible .