QwtCompassMagnetNeedle

Langue: en

Autres versions - même langue

Version: 380939 (fedora - 01/12/10)

Section: 3 (Bibliothèques de fonctions)

Sommaire

NAME

QwtCompassMagnetNeedle -

A magnet needle for compass widgets.

SYNOPSIS


#include <qwt_dial_needle.h>

Inherits QwtDialNeedle.

Public Types


enum Style { TriangleStyle, ThinStyle }

Public Member Functions


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

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

Static Public Member Functions


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

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

Static Protected Member Functions


static void drawPointer (QPainter *painter, const QBrush &brush, int colorOffset, const QPoint &center, int length, int width, double direction)

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:

*
QColorGroup::Light

 Used for pointing south
*
QColorGroup::Dark

 Used for pointing north
*
QColorGroup::Base

 Knob (ThinStyle only)

See also:

QwtDial, QwtCompass

Member Enumeration Documentation

enum QwtCompassMagnetNeedle::Style

Style of the needle.

Constructor & Destructor Documentation

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

Constructor.

Member Function Documentation

void QwtCompassMagnetNeedle::draw (QPainter * painter, const QPoint & center, int length, double direction, QPalette::ColorGroup colorGroup = 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 QwtCompassMagnetNeedle::drawPointer (QPainter * painter, const QBrush & brush, int colorOffset, const QPoint & center, int length, int width, double direction) [static, protected]Draw a compass needle

Parameters:

painter Painter
brush Brush
colorOffset Color offset
center Center, where the needle starts
length Length of the needle
width Width of the needle
direction Direction

void QwtCompassMagnetNeedle::drawThinNeedle (QPainter * painter, const QPalette & palette, QPalette::ColorGroup colorGroup, const QPoint & center, int length, double direction) [static]Draw a compass needle

Parameters:

painter Painter
palette Palette
colorGroup Color group
center Center, where the needle starts
length Length of the needle
direction Direction

void QwtCompassMagnetNeedle::drawTriangleNeedle (QPainter * painter, const QPalette & palette, QPalette::ColorGroup colorGroup, const QPoint & center, int length, double direction) [static]Draw a compass needle

Parameters:

painter Painter
palette Palette
colorGroup Color group
center Center, where the needle starts
length Length of the needle
direction Direction

Author

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