QwtCompassMagnetNeedle - Man Page
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
virtual void draw (QPainter *, const QPoint &, int length, double direction, QPalette::ColorGroup=QPalette::Active) const
const QPalette & palette () const
QwtCompassMagnetNeedle (Style=TriangleStyle, const QColor &light=Qt::white, const QColor &dark=Qt::red)
virtual void setPalette (const QPalette &)
Static Public Member Functions
static void drawThinNeedle (QPainter *, const QPalette &, QPalette::ColorGroup, const QPoint &, int length, double direction)
static void drawTriangleNeedle (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)
static void drawPointer (QPainter *painter, const QBrush &brush, int colorOffset, const QPoint ¢er, 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 (Stylestyle = TriangleStyle, const QColor &light = Qt::white, const QColor &dark = Qt::red)
Constructor.
Member Function Documentation
void QwtCompassMagnetNeedle::draw (QPainter *painter, const QPoint ¢er, 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 QwtCompassMagnetNeedle::drawPointer (QPainter *painter, const QBrush &brush, intcolorOffset, const QPoint ¢er, intlength, intwidth, doubledirection) [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::ColorGroupcolorGroup, const QPoint ¢er, intlength, doubledirection) [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::ColorGroupcolorGroup, const QPoint ¢er, intlength, doubledirection) [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
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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