QwtCompassMagnetNeedle(3) Qwt User's Guide QwtCompassMagnetNeedle(3)NAMEQwtCompassMagnetNeedle-
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 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 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 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 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
Author
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code.
Version 5.2.3 Tue Nov 20 2012 QwtCompassMagnetNeedle(3)
