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QwtCompassMagnetNeedle

NAME

QwtCompassMagnetNeedle -

SYNOPSIS

Inherits QwtDialNeedle.

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

Definition at line 125 of file qwt_dial_needle.h.

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)

Member Enumeration Documentation

enum QwtCompassMagnetNeedle::Style

Style of the needle.

Definition at line 129 of file qwt_dial_needle.h.

Constructor & Destructor Documentation

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

Constructor.

Definition at line 265 of file qwt_dial_needle.cpp.

References QwtDialNeedle::palette().

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.

Definition at line 292 of file qwt_dial_needle.cpp.

References drawThinNeedle(), drawTriangleNeedle(), and QwtDialNeedle::palette().

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

Definition at line 419 of file qwt_dial_needle.cpp.

Referenced by drawThinNeedle().

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

Definition at line 383 of file qwt_dial_needle.cpp.

References QwtDialNeedle::drawKnob(), and drawPointer().

Referenced by draw().

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

Definition at line 317 of file qwt_dial_needle.cpp.

Referenced by draw().

Author

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