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.
Public Member Functions inherited from QwtDialNeedle
	QwtDialNeedle ()
	Constructor.
virtual	~QwtDialNeedle ()
	Destructor.
virtual void	setPalette (const QPalette &)
const QPalette &	palette () const
virtual void	draw (QPainter *, const QPointF &center, double length, double direction, QPalette::ColorGroup=QPalette::Active) const

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

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

Definition at line 127 of file qwt_dial_needle.h.

Member Enumeration Documentation

Style

enum QwtCompassMagnetNeedle::Style

Style of the needle.

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

Definition at line 131 of file qwt_dial_needle.h.

Constructor & Destructor Documentation

QwtCompassMagnetNeedle()

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

Constructor.

Definition at line 350 of file qwt_dial_needle.cpp.

Member Function Documentation

drawNeedle()

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

overrideprotectedvirtual

Draw the needle

Parameters

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

Implements QwtDialNeedle.

Definition at line 369 of file qwt_dial_needle.cpp.