Qwt User's Guide 5.2.2
Public Types | Public Member Functions | Static Public Member Functions | Static Protected Member Functions

QwtDialSimpleNeedle Class Reference

A needle for dial widgets. More...

#include <qwt_dial_needle.h>

Inheritance diagram for QwtDialSimpleNeedle:
Inheritance graph
[legend]

List of all members.

Public Types

enum  Style {
  Arrow,
  Ray
}

Public Member Functions

virtual void draw (QPainter *, const QPoint &, int length, double direction, QPalette::ColorGroup=QPalette::Active) const
const QPalette & palette () const
 QwtDialSimpleNeedle (Style, bool hasKnob=true, const QColor &mid=Qt::gray, const QColor &base=Qt::darkGray)
virtual void setPalette (const QPalette &)
void setWidth (int width)
int width () const

Static Public Member Functions

static void drawArrowNeedle (QPainter *, const QPalette &, QPalette::ColorGroup, const QPoint &, int length, int width, double direction, bool hasKnob)
static void drawRayNeedle (QPainter *, const QPalette &, QPalette::ColorGroup, const QPoint &, int length, int width, double direction, bool hasKnob)

Static Protected Member Functions

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

Detailed Description

A needle for dial widgets.

The following colors are used:

See also:
QwtDial, QwtCompass

Member Enumeration Documentation

Style of the needle.


Constructor & Destructor Documentation

QwtDialSimpleNeedle::QwtDialSimpleNeedle ( Style  style,
bool  hasKnob = true,
const QColor &  mid = Qt::gray,
const QColor &  base = Qt::darkGray 
)

Constructor

Parameters:
styleStyle
hasKnobWith/Without knob
midMiddle color
baseBase color

Member Function Documentation

void QwtDialSimpleNeedle::draw ( QPainter *  painter,
const QPoint &  center,
int  length,
double  direction,
QPalette::ColorGroup  colorGroup = QPalette::Active 
) const [virtual]

Draw the needle

Parameters:
painterPainter
centerCenter of the dial, start position for the needle
lengthLength of the needle
directionDirection of the needle, in degrees counter clockwise
colorGroupColor group, used for painting

Implements QwtDialNeedle.

void QwtDialSimpleNeedle::drawArrowNeedle ( QPainter *  painter,
const QPalette &  palette,
QPalette::ColorGroup  colorGroup,
const QPoint &  center,
int  length,
int  width,
double  direction,
bool  hasKnob 
) [static]

Draw a needle looking like an arrow

Parameters:
painterPainter
palettePalette
colorGroupColor group
centercenter of the needle
lengthLength of the needle
widthWidth of the needle
directionCurrent Direction
hasKnobWith/Without knob
void QwtDialNeedle::drawKnob ( QPainter *  painter,
const QPoint &  pos,
int  width,
const QBrush &  brush,
bool  sunken 
) [static, protected, inherited]

Draw the knob.

void QwtDialSimpleNeedle::drawRayNeedle ( QPainter *  painter,
const QPalette &  palette,
QPalette::ColorGroup  colorGroup,
const QPoint &  center,
int  length,
int  width,
double  direction,
bool  hasKnob 
) [static]

Draw a needle looking like a ray

Parameters:
painterPainter
palettePalette
colorGroupColor group
centercenter of the needle
lengthLength of the needle
widthWidth of the needle
directionCurrent Direction
hasKnobWith/Without knob
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:
paletteNew Palette
void QwtDialSimpleNeedle::setWidth ( int  width)

Set the width of the needle

Parameters:
widthWidth
See also:
width()
int QwtDialSimpleNeedle::width ( ) const
Returns:
the width of the needle
See also:
setWidth()