Qwt User's Guide 5.2.2
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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 *, const QPoint &, int 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 &) |
Static Public Member Functions | |
static void | drawThinNeedle (QPainter *, const QPalette &, QPalette::ColorGroup, const QPoint &, int length, double direction) |
static void | drawTriangleNeedle (QPainter *, const QPalette &, QPalette::ColorGroup, const QPoint &, int length, double direction) |
Static Protected Member Functions | |
static void | drawKnob (QPainter *, const QPoint &pos, int width, const QBrush &, bool sunken) |
static void | drawPointer (QPainter *painter, const QBrush &brush, int colorOffset, const QPoint ¢er, int length, int width, double direction) |
A magnet needle for compass widgets.
A magnet needle points to two opposite directions indicating north and south.
The following colors are used:
Style of the needle.
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 QwtCompassMagnetNeedle::draw | ( | QPainter * | painter, |
const QPoint & | center, | ||
int | length, | ||
double | direction, | ||
QPalette::ColorGroup | colorGroup = QPalette::Active |
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) | const [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 |
colorGroup | Color group, used for painting |
Implements QwtDialNeedle.
void QwtDialNeedle::drawKnob | ( | QPainter * | painter, |
const QPoint & | pos, | ||
int | width, | ||
const QBrush & | brush, | ||
bool | sunken | ||
) | [static, protected, inherited] |
Draw the knob.
void QwtCompassMagnetNeedle::drawPointer | ( | QPainter * | painter, |
const QBrush & | brush, | ||
int | colorOffset, | ||
const QPoint & | center, | ||
int | length, | ||
int | width, | ||
double | direction | ||
) | [static, protected] |
Draw a compass needle
painter | Painter |
brush | Brush |
colorOffset | Color offset |
center | Center, where the needle starts |
length | Length of the needle |
width | Width of the needle |
direction | Direction |
void QwtCompassMagnetNeedle::drawThinNeedle | ( | QPainter * | painter, |
const QPalette & | palette, | ||
QPalette::ColorGroup | colorGroup, | ||
const QPoint & | center, | ||
int | length, | ||
double | direction | ||
) | [static] |
Draw a compass needle
painter | Painter |
palette | Palette |
colorGroup | Color group |
center | Center, where the needle starts |
length | Length of the needle |
direction | Direction |
void QwtCompassMagnetNeedle::drawTriangleNeedle | ( | QPainter * | painter, |
const QPalette & | palette, | ||
QPalette::ColorGroup | colorGroup, | ||
const QPoint & | center, | ||
int | length, | ||
double | direction | ||
) | [static] |
Draw a compass needle
painter | Painter |
palette | Palette |
colorGroup | Color group |
center | Center, where the needle starts |
length | Length of the needle |
direction | Direction |
const QPalette & QwtDialNeedle::palette | ( | ) | const [inherited] |
void QwtDialNeedle::setPalette | ( | const QPalette & | palette | ) | [virtual, inherited] |
Sets the palette for the needle.
palette | New Palette |