Qwt User's Guide  6.0.2
Public Types | Public Member Functions | Protected Member Functions
QwtCompassWindArrow Class Reference

#include <qwt_dial_needle.h>

Inheritance diagram for QwtCompassWindArrow:
Inheritance graph
[legend]

List of all members.

Public Types

enum  Style {
  Style1,
  Style2
}

Public Member Functions

 QwtCompassWindArrow (Style, const QColor &light=Qt::white, const QColor &dark=Qt::gray)
- Public Member Functions inherited from QwtDialNeedle
 QwtDialNeedle ()
virtual ~QwtDialNeedle ()
virtual void draw (QPainter *painter, const QPointF &center, double length, double direction, QPalette::ColorGroup=QPalette::Active) const
const QPalette & palette () const
virtual void setPalette (const QPalette &)

Protected Member Functions

virtual void drawNeedle (QPainter *, double length, QPalette::ColorGroup) const
- Protected Member Functions inherited from QwtDialNeedle
virtual void drawKnob (QPainter *, double width, const QBrush &, bool sunken) const

Detailed Description

An indicator for the wind direction.

QwtCompassWindArrow shows the direction where the wind comes from.

See also:
QwtDial, QwtCompass

Member Enumeration Documentation

Style of the arrow.

Enumerator:
Style1 

A needle pointing to the center.

Style2 

A needle pointing to the center.


Constructor & Destructor Documentation

QwtCompassWindArrow::QwtCompassWindArrow ( Style  style,
const QColor &  light = Qt::white,
const QColor &  dark = Qt::gray 
)

Constructor

Parameters:
styleArrow style
lightLight color
darkDark color

Member Function Documentation

void QwtCompassWindArrow::drawNeedle ( QPainter *  painter,
double  length,
QPalette::ColorGroup  colorGroup 
) const
protectedvirtual

Draw the needle

Parameters:
painterPainter
lengthLength of the needle
colorGroupColor group, used for painting

Implements QwtDialNeedle.