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Qwt User's Guide 6.0.1
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A magnet needle for compass widgets. More...
#include <qwt_dial_needle.h>

Public Types | |
| enum | Style { TriangleStyle, ThinStyle } |
Public Member Functions | |
| virtual void | draw (QPainter *painter, const QPointF ¢er, double length, double direction, QPalette::ColorGroup=QPalette::Active) const |
| const QPalette & | palette () const |
| QwtCompassMagnetNeedle (Style=TriangleStyle, const QColor &light=Qt::white, const QColor &dark=Qt::red) | |
| virtual void | setPalette (const QPalette &) |
Protected Member Functions | |
| virtual void | drawKnob (QPainter *, double width, const QBrush &, bool sunken) const |
| virtual void | drawNeedle (QPainter *, double length, QPalette::ColorGroup) const |
A magnet needle for compass widgets.
A magnet needle points to two opposite directions indicating north and south.
The following colors are used:
| QwtCompassMagnetNeedle::QwtCompassMagnetNeedle | ( | Style | style = TriangleStyle, |
| const QColor & | light = Qt::white, |
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| const QColor & | dark = Qt::red |
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| ) |
Constructor.
| void QwtDialNeedle::draw | ( | QPainter * | painter, |
| const QPointF & | center, | ||
| double | length, | ||
| double | direction, | ||
| QPalette::ColorGroup | colorGroup = QPalette::Active |
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| ) | const [virtual, inherited] |
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 |
| colorGroup | Color group, used for painting |
| void QwtDialNeedle::drawKnob | ( | QPainter * | painter, |
| double | width, | ||
| const QBrush & | brush, | ||
| bool | sunken | ||
| ) | const [protected, virtual, inherited] |
Draw the knob.
| void QwtCompassMagnetNeedle::drawNeedle | ( | QPainter * | painter, |
| double | length, | ||
| QPalette::ColorGroup | colorGroup | ||
| ) | const [protected, virtual] |
Draw the needle
| painter | Painter |
| length | Length of the needle |
| colorGroup | Color group, used for painting |
Implements QwtDialNeedle.
| const QPalette & QwtDialNeedle::palette | ( | ) | const [inherited] |
| void QwtDialNeedle::setPalette | ( | const QPalette & | palette | ) | [virtual, inherited] |
Sets the palette for the needle.
| palette | New Palette |
1.7.3