QwtArrowButton类 参考

Arrow Button 更多...

#include <qwt_arrow_button.h>

类 QwtArrowButton 继承关系图:

类
class	PrivateData

Public 成员函数
	QwtArrowButton (int num, Qt::ArrowType, QWidget *parent=nullptr)
	Constructor
Qt::ArrowType	arrowType () const
	Get the direction of the arrows
int	num () const
	Get the number of arrows
virtual QSize	sizeHint () const override
	Get a size hint for the button
virtual QSize	minimumSizeHint () const override
	Get a minimum size hint for the button

Protected 成员函数
virtual void	paintEvent (QPaintEvent *) override
	Paint event handler
virtual void	keyPressEvent (QKeyEvent *) override
	autoRepeat for the space keys
virtual void	drawButtonLabel (QPainter *)
	Draw the button label
virtual void	drawArrow (QPainter *, const QRect &, Qt::ArrowType) const
	Draw an arrow int a bounding rectangle
virtual QRect	labelRect () const
virtual QSize	arrowSize (Qt::ArrowType, const QSize &boundingSize) const
	Calculate the size for a arrow that fits into a rectangle of a given size

详细描述

Arrow Button

A push button with one or more filled triangles on its front. An Arrow button can have 1 to 3 arrows in a row, pointing up, down, left or right.

构造及析构函数说明

QwtArrowButton()

QwtArrowButton::QwtArrowButton ( int  num, Qt::ArrowType  arrowType, QWidget *  parent = nullptr  )

explicit

Constructor

参数

[in]	num	Number of arrows (1-3)
[in]	arrowType	Direction of arrows (see Qt::ArrowType)
[in]	parent	Parent widget

Destructor

成员函数说明

arrowSize()

QSize QwtArrowButton::arrowSize ( Qt::ArrowType  arrowType, const QSize &  boundingSize  ) const

protectedvirtual

Calculate the size for a arrow that fits into a rectangle of a given size

参数

arrowType	Arrow type
boundingSize	Bounding size

返回

Size of the arrow

arrowType()

Qt::ArrowType QwtArrowButton::arrowType

(

)

const

Get the direction of the arrows

返回

Arrow direction

drawArrow()

void QwtArrowButton::drawArrow ( QPainter *  painter, const QRect &  r, Qt::ArrowType  arrowType  ) const

protectedvirtual

Draw an arrow int a bounding rectangle

参数

painter	Painter
r	Rectangle where to paint the arrow
arrowType	Arrow type

drawButtonLabel()

void QwtArrowButton::drawButtonLabel ( QPainter *  painter )

protectedvirtual

Draw the button label

参数

painter

Painter

参见

The Qt Manual for QPushButton

labelRect()

QRect QwtArrowButton::labelRect ( ) const

protectedvirtual

返回

the bounding rectangle for the label

minimumSizeHint()

QSize QwtArrowButton::minimumSizeHint ( ) const

overridevirtual

Get a minimum size hint for the button

返回

Minimum size hint

num()

int QwtArrowButton::num

(

)

const

Get the number of arrows

返回

Number of arrows

paintEvent()

void QwtArrowButton::paintEvent ( QPaintEvent *  event )

overrideprotectedvirtual

Paint event handler

参数

event

Paint event

sizeHint()

QSize QwtArrowButton::sizeHint ( ) const

overridevirtual

Get a size hint for the button

返回

Size hint

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该类的文档由以下文件生成:

• /home/runner/work/QWT/QWT/src/plot/qwt_arrow_button.h
• /home/runner/work/QWT/QWT/src/plot/qwt_arrow_button.cpp