SYNOPSIS

#include <qwt_dial_needle.h>

Inherits QwtDialNeedle.

Public Types

enum Style { Style1, Style2 }

Public Member Functions

virtual void draw (QPainter *, const QPoint &, int length, double direction, QPalette::ColorGroup=QPalette::Active) const

const QPalette & palette () const

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

virtual void setPalette (const QPalette &)

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)

Static Protected Member Functions

static void drawKnob (QPainter *, const QPoint &pos, int width, const QBrush &, bool sunken)

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

Member Enumeration Documentation

enum QwtCompassWindArrow::Style

Style of the arrow.

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 QwtDialNeedle::drawKnob (QPainter *painter, const QPoint &pos, intwidth, const QBrush &brush, boolsunken) [static, protected, inherited]

Draw the knob.

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

const QPalette & QwtDialNeedle::palette () const [inherited]Returns:

the palette of the needle.

void QwtDialNeedle::setPalette (const QPalette &palette) [virtual, inherited]Sets the palette for the needle.

Parameters:

palette New Palette

Author

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