Qwt User's Guide: QwtDialNeedle Class Reference

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QwtDialNeedle Class Reference

Base class for needles that can be used in a QwtDial. More...

#include <qwt_dial_needle.h>

Inheritance diagram for QwtDialNeedle:
[legend]

List of all members.

Public Member Functions

 QwtDialNeedle ()
virtual ~QwtDialNeedle ()
virtual void draw (QPainter *painter, const QPoint &center, int length, double direction, QPalette::ColorGroup cg=QPalette::Active) const =0
virtual void setPalette (const QPalette &)
const QPalette & palette () const

Static Protected Member Functions

static void drawKnob (QPainter *, const QPoint &pos, int width, const QBrush &, bool sunken)

Detailed Description

Base class for needles that can be used in a QwtDial.

QwtDialNeedle is a pointer that indicates a value by pointing to a specific direction.

Qwt is missing a set of good looking needles. Contributions are very welcome.

See also:
QwtDial, QwtCompass

Constructor & Destructor Documentation

QwtDialNeedle::QwtDialNeedle (  ) 

Constructor.

QwtDialNeedle::~QwtDialNeedle (  )  [virtual]

Destructor.

Member Function Documentation

virtual void QwtDialNeedle::draw ( QPainter *  painter,
const QPoint &  center,
int  length,
double  direction,
QPalette::ColorGroup  cg = QPalette::Active 
) const [pure 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
cg Color group, used for painting

Implemented in QwtDialSimpleNeedle, QwtCompassMagnetNeedle, and QwtCompassWindArrow.

void QwtDialNeedle::drawKnob ( QPainter *  painter,
const QPoint &  pos,
int  width,
const QBrush &  brush,
bool  sunken 
) [static, protected]

Draw the knob.

const QPalette & QwtDialNeedle::palette (  )  const
Returns:
the palette of the needle.
void QwtDialNeedle::setPalette ( const QPalette &  palette  )  [virtual]

Sets the palette for the needle.

Parameters:
palette New Palette
Generated on Wed Sep 2 18:37:24 2009 for Qwt User's Guide by  doxygen 1.6.1
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