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

NAME

QwtCompassWindArrow -

SYNOPSIS

#include <qwt_dial_needle.h>

Inherits QwtDialNeedle.

Public Types


enum Style { Style1, Style2 }

Public Member Functions


QwtCompassWindArrow (Style, const QColor &light=Qt::white, const QColor &dark=Qt::gray)
virtual void draw (QPainter *, const QPoint &, int length, double direction, QPalette::ColorGroup=QPalette::Active) const

Static Public Member Functions


static void drawStyle1Needle (QPainter *, const QPalette &, QPalette::ColorGroup, const QPoint &, int length, double direction)
static void drawStyle2Needle (QPainter *, const QPalette &, QPalette::ColorGroup, const QPoint &, int length, double direction)

Additional Inherited Members

Detailed Description

An indicator for the wind direction.

QwtCompassWindArrow shows the direction where the wind comes from.

  • QColorGroup::Light
    Used for Style1, or the light half of Style2
  • QColorGroup::Dark
    Used for the dark half of Style2

See also:

QwtDial, QwtCompass

Constructor & Destructor Documentation

QwtCompassWindArrow::QwtCompassWindArrow (Stylestyle, const QColor &light = Qt::white, const QColor &dark = Qt::gray)

Constructor

Parameters:

style Arrow style
light Light color
dark Dark color

Member Function Documentation

void QwtCompassWindArrow::draw (QPainter *painter, const QPoint &center, intlength, doubledirection, QPalette::ColorGroupcolorGroup = QPalette::Active) const [virtual]

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

Implements QwtDialNeedle.

void QwtCompassWindArrow::drawStyle1Needle (QPainter *painter, const QPalette &palette, QPalette::ColorGroupcolorGroup, const QPoint &center, intlength, doubledirection) [static]

Draw a compass needle

Parameters:

painter Painter
palette Palette
colorGroup colorGroup
center Center of the dial, start position for the needle
length Length of the needle
direction Direction of the needle, in degrees counter clockwise

void QwtCompassWindArrow::drawStyle2Needle (QPainter *painter, const QPalette &palette, QPalette::ColorGroupcolorGroup, const QPoint &center, intlength, doubledirection) [static]

Draw a compass needle

Parameters:

painter Painter
palette Palette
colorGroup colorGroup
center Center of the dial, start position for the needle
length Length of the needle
direction Direction of the needle, in degrees counter clockwise

Author

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Tue Nov 20 2012 Version 5.2.3