Scroll to navigation

QwtCompassMagnetNeedle(3) Qwt User's Guide QwtCompassMagnetNeedle(3)

NAME

QwtCompassMagnetNeedle -

A magnet needle for compass widgets.

SYNOPSIS

#include <qwt_dial_needle.h>

Inherits QwtDialNeedle.

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.

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:

  • 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.

Member Function Documentation

void QwtCompassMagnetNeedle::drawNeedle (QPainter *painter, doublelength, QPalette::ColorGroupcolorGroup) const [protected], [virtual]

Draw the needle

Parameters:

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

Implements QwtDialNeedle.

Author

Generated automatically by Doxygen for Qwt User's Guide from the source code.
Thu Dec 11 2014 Version 6.1.2