Qwt User's Guide 6.0.0
Public Types | Public Member Functions | Protected Member Functions

QwtCompassMagnetNeedle Class Reference

A magnet needle for compass widgets. More...

#include <qwt_dial_needle.h>

Inheritance diagram for QwtCompassMagnetNeedle:
Inheritance graph
[legend]

List of all members.

Public Types

enum  Style {
  TriangleStyle,
  ThinStyle
}

Public Member Functions

 QwtCompassMagnetNeedle (Style=TriangleStyle, const QColor &light=Qt::white, const QColor &dark=Qt::red)

Protected Member Functions

virtual void drawNeedle (QPainter *, double length, QPalette::ColorGroup) const

Detailed Description

A magnet needle for compass widgets.

A magnet needle points to two opposite directions indicating north and south.

The following colors are used:

See also:
QwtDial, QwtCompass

Member Enumeration Documentation

Style of the needle.

Enumerator:
TriangleStyle 

A needle with a triangular shape.

ThinStyle 

A thin needle.


Constructor & Destructor Documentation

QwtCompassMagnetNeedle::QwtCompassMagnetNeedle ( Style  style = TriangleStyle,
const QColor &  light = Qt::white,
const QColor &  dark = Qt::red 
)

Constructor.


Member Function Documentation

void QwtCompassMagnetNeedle::drawNeedle ( QPainter *  painter,
double  length,
QPalette::ColorGroup  colorGroup 
) const [protected, virtual]

Draw the needle

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

Implements QwtDialNeedle.