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.

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 &)
	Set the palette for the needle.
const QPalette &	palette () const
	Return the palette of the needle.
void	setFlatStyle (bool)
	Set flat style.
bool	flatStyle () const
	Return flat style.
virtual void	draw (QPainter *, const QPointF &center, double length, double direction, QPalette::ColorGroup=QPalette::Active) const
	Draw the needle.

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

Additional Inherited Members
Protected Attributes inherited from QwtDialNeedle
QPalette	m_palette
bool	m_flatStyle

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

Constructor & Destructor Documentation

QwtCompassMagnetNeedle()

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

Constructor.

Parameters

[in]	style	Style
[in]	light	Light color
[in]	dark	Dark color

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.

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The documentation for this class was generated from the following files:

• /home/runner/work/QWT/QWT/src/plot/qwt_dial_needle.h
• /home/runner/work/QWT/QWT/src/plot/qwt_dial_needle.cpp