QwtCompassMagnetNeedle Class Reference

#include <qwt_dial_needle.h>

Inherits QwtDialNeedle.

List of all members.

Public Types
enum	Style {   TriangleStyle,   ThinStyle }
Public Member Functions
virtual void	draw (QPainter *painter, const QPointF &center, double length, double direction, QPalette::ColorGroup=QPalette::Active) const
const QPalette &	palette () const
	QwtCompassMagnetNeedle (Style=TriangleStyle, const QColor &light=Qt::white, const QColor &dark=Qt::red)
virtual void	setPalette (const QPalette &)
Protected Member Functions
virtual void	drawKnob (QPainter *, double width, const QBrush &, bool sunken) const
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:

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

See also:

QwtDial, QwtCompass

---

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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Constructor & Destructor Documentation

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

Constructor.

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Member Function Documentation

void QwtDialNeedle::draw	(	QPainter *	painter,
		const QPointF &	center,
		double	length,
		double	direction,
		QPalette::ColorGroup	colorGroup = QPalette::Active
	)		const [virtual, inherited]

Draw the needle

Parameters:

painter	Painter
center	Center of the dial, start position for the needle
length	Length of the needle
direction	Direction of the needle, in degrees counter clockwise
colorGroup	Color group, used for painting

void QwtDialNeedle::drawKnob	(	QPainter *	painter,
		double	width,
		const QBrush &	brush,
		bool	sunken
	)		const [protected, virtual, inherited]

Draw the knob.

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.

const QPalette & QwtDialNeedle::palette

(

)

const [inherited]

Returns:

the palette of the needle.

void QwtDialNeedle::setPalette

(

const QPalette &

palette

)

[virtual, inherited]

Sets the palette for the needle.

Parameters:

palette

New Palette