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QwtDialNeedle

NAME

QwtDialNeedle -

SYNOPSIS

Inherited by QwtCompassMagnetNeedle, QwtCompassWindArrow, and QwtDialSimpleNeedle.

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

Definition at line 31 of file qwt_dial_needle.h.

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)

Constructor & Destructor Documentation

QwtDialNeedle::QwtDialNeedle ()

Constructor.

Definition at line 25 of file qwt_dial_needle.cpp.

QwtDialNeedle::~QwtDialNeedle () [virtual]

Destructor.

Definition at line 31 of file qwt_dial_needle.cpp.

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.

Referenced by QwtAnalogClock::drawHand().

void QwtDialNeedle::setPalette (const QPalette & palette) [virtual]

Sets the palette for the needle.

Parameters:

palette New Palette

Definition at line 40 of file qwt_dial_needle.cpp.

Referenced by QwtCompassMagnetNeedle::QwtCompassMagnetNeedle(), QwtCompassWindArrow::QwtCompassWindArrow(), and QwtDialSimpleNeedle::QwtDialSimpleNeedle().

const QPalette & QwtDialNeedle::palette () const

Returns:

the palette of the needle.

Definition at line 48 of file qwt_dial_needle.cpp.

Referenced by QwtCompassWindArrow::draw(), QwtCompassMagnetNeedle::draw(), QwtDialSimpleNeedle::draw(), QwtCompassMagnetNeedle::QwtCompassMagnetNeedle(), QwtCompassWindArrow::QwtCompassWindArrow(), and QwtDialSimpleNeedle::QwtDialSimpleNeedle().

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

Draw the knob.

Definition at line 54 of file qwt_dial_needle.cpp.

Referenced by QwtDialSimpleNeedle::drawArrowNeedle(), QwtDialSimpleNeedle::drawRayNeedle(), and QwtCompassMagnetNeedle::drawThinNeedle().

Author

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