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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, 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.

Author

Generated automatically by Doxygen for Qwt User's Guide from the source code.
Wed Jan 2 2019 Version 6.1.4