QwtCompassMagnetNeedle Class Reference

A magnet needle for compass widgets. More...

#include <qwt_dial_needle.h>

Inheritance diagram for QwtCompassMagnetNeedle:

Public Types
enum	Style { TriangleStyle, ThinStyle }
	Style of the needle. More...
Public Member Functions
	QwtCompassMagnetNeedle (Style=TriangleStyle, const QColor &light=Qt::white, const QColor &dark=Qt::red)
	Constructor.
Protected Member Functions
virtual void	drawNeedle (QPainter *, double length, QPalette::ColorGroup) const

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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:

• QPalette::Light
  Used for pointing south
• QPalette::Dark
  Used for pointing north
• QPalette::Base
  Knob (ThinStyle only)

See also:

QwtDial, QwtCompass

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Member Enumeration Documentation

enum QwtCompassMagnetNeedle::Style

Style of the needle.

Enumerator:

TriangleStyle	A needle with a triangular shape.
ThinStyle	A thin needle.

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Member Function Documentation

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

Draw the needle

Parameters:

painter	Painter
length	Length of the needle
colorGroup	Color group, used for painting

Implements QwtDialNeedle.

List of all members.