Qwt User's Guide 6.1.3

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QwtArrowButton Class Reference

Arrow Button. More...

`#include <qwt_arrow_button.h>`

Inheritance diagram for QwtArrowButton:
[legend]

## Public Member Functions
| QwtArrowButton (int num, Qt::ArrowType, QWidget *parent=NULL)
virtual | ~QwtArrowButton ()
| Destructor.
Qt::ArrowType | arrowType () const
| The direction of the arrows.
int | num () const
| The number of arrows.
virtual QSize | sizeHint () const
virtual QSize | minimumSizeHint () const
| Return a minimum size hint.

## Protected Member Functions
virtual void | paintEvent (QPaintEvent *event)
virtual void | drawButtonLabel (QPainter *p)
| Draw the button label. More...
virtual void | drawArrow (QPainter *, const QRect &, Qt::ArrowType) const
virtual QRect | labelRect () const
virtual QSize | arrowSize (Qt::ArrowType, const QSize &boundingSize) const
virtual void | keyPressEvent (QKeyEvent *)
| autoRepeat for the space keys

## Detailed Description

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.

## Constructor & Destructor Documentation

QwtArrowButton::QwtArrowButton | ( | int | num,
|  | Qt::ArrowType | arrowType,
|  | QWidget * | parent = `NULL`
| ) |  |
| explicit

Parameters

  num | Number of arrows
  arrowType | see Qt::ArrowType in the Qt docs.
  parent | Parent widget

## Member Function Documentation

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

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

Parameters

  arrowType | Arrow type
  boundingSize | Bounding size

Returns
  Size of the arrow

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

Draw an arrow int a bounding rectangle

Parameters

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

void QwtArrowButton::drawButtonLabel | ( | QPainter * | painter | ) |
| protected virtual

Draw the button label.

Parameters

  painter | Painter

See also
  The Qt Manual for QPushButton

QRect QwtArrowButton::labelRect | ( |  | ) | const
| protected virtual

Returns
  the bounding rectangle for the label

void QwtArrowButton::paintEvent | ( | QPaintEvent * | event | ) |
| protected virtual

Paint event handler

Parameters

  event | Paint event

QSize QwtArrowButton::sizeHint | ( |  | ) | const
| virtual

Returns
  a size hint