Qwt User's Guide: QwtCompassMagnetNeedle Class Reference

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QwtCompassMagnetNeedle Class Reference

A magnet needle for compass widgets. More...

#include <qwt_dial_needle.h>

Inheritance diagram for QwtCompassMagnetNeedle:
[legend]

List of all members.

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
Generated on Wed Sep 2 18:37:23 2009 for Qwt User's Guide by  doxygen 1.6.1
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