Qwt User's Guide
5.2.3
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#include <qwt_dial_needle.h>
Public Member Functions | |
QwtDialNeedle () | |
virtual | ~QwtDialNeedle () |
virtual void | draw (QPainter *painter, const QPoint ¢er, int length, double direction, QPalette::ColorGroup cg=QPalette::Active) const =0 |
const QPalette & | palette () const |
virtual void | setPalette (const QPalette &) |
Static Protected Member Functions | |
static void | drawKnob (QPainter *, const QPoint &pos, int width, const QBrush &, bool sunken) |
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.
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pure virtual |
Draw the needle
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 QwtCompassWindArrow, QwtCompassMagnetNeedle, and QwtDialSimpleNeedle.
const QPalette & QwtDialNeedle::palette | ( | ) | const |
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virtual |
Sets the palette for the needle.
palette | New Palette |