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QwtDialSimpleNeedle(3) Qwt User's Guide QwtDialSimpleNeedle(3)

NAME

QwtDialSimpleNeedle -

SYNOPSIS

#include <qwt_dial_needle.h>

Inherits QwtDialNeedle.

Public Types


enum Style { Arrow, Ray }

Public Member Functions


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

Additional Inherited Members

Detailed Description

A needle for dial widgets.

The following colors are used:

  • QColorGroup::Mid
    Pointer
  • QColorGroup::base
    Knob

See also:

QwtDial, QwtCompass

Constructor & Destructor Documentation

QwtDialSimpleNeedle::QwtDialSimpleNeedle (Stylestyle, boolhasKnob = true, const QColor &mid = Qt::gray, const QColor &base = Qt::darkGray)

Constructor

Parameters:

style Style
hasKnob With/Without knob
mid Middle color
base Base color

Member Function Documentation

void QwtDialSimpleNeedle::draw (QPainter *painter, const QPoint &center, 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 QwtDialSimpleNeedle::drawArrowNeedle (QPainter *painter, const QPalette &palette, QPalette::ColorGroupcolorGroup, const QPoint &center, intlength, intwidth, doubledirection, boolhasKnob) [static]

Draw a needle looking like an arrow

Parameters:

painter Painter
palette Palette
colorGroup Color group
center center of the needle
length Length of the needle
width Width of the needle
direction Current Direction
hasKnob With/Without knob

void QwtDialSimpleNeedle::drawRayNeedle (QPainter *painter, const QPalette &palette, QPalette::ColorGroupcolorGroup, const QPoint &center, intlength, intwidth, doubledirection, boolhasKnob) [static]

Draw a needle looking like a ray

Parameters:

painter Painter
palette Palette
colorGroup Color group
center center of the needle
length Length of the needle
width Width of the needle
direction Current Direction
hasKnob With/Without knob

void QwtDialSimpleNeedle::setWidth (intwidth)

Set the width of the needle

Parameters:

width Width

See also:

width()

int QwtDialSimpleNeedle::width () const

Returns:

the width of the needle

See also:

setWidth()

Author

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Tue Nov 20 2012 Version 5.2.3