132 lines
3.2 KiB
Groff
132 lines
3.2 KiB
Groff
.TH "QwtDialNeedle" 3 "Sun Jul 18 2021" "Version 6.2.0" "Qwt User's Guide" \" -*- nroff -*-
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.ad l
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.nh
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.SH NAME
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QwtDialNeedle \- Base class for needles that can be used in a \fBQwtDial\fP\&.
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.SH SYNOPSIS
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.br
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.PP
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.PP
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\fC#include <qwt_dial_needle\&.h>\fP
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.PP
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Inherited by \fBQwtCompassMagnetNeedle\fP, \fBQwtCompassWindArrow\fP, and \fBQwtDialSimpleNeedle\fP\&.
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.SS "Public Member Functions"
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.in +1c
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.ti -1c
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.RI "\fBQwtDialNeedle\fP ()"
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.br
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.RI "Constructor\&. "
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.ti -1c
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.RI "virtual \fB~QwtDialNeedle\fP ()"
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.br
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.RI "Destructor\&. "
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.ti -1c
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.RI "virtual void \fBsetPalette\fP (const QPalette &)"
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.br
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.ti -1c
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.RI "const QPalette & \fBpalette\fP () const"
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.br
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.ti -1c
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.RI "virtual void \fBdraw\fP (QPainter *, const QPointF ¢er, double length, double direction, QPalette::ColorGroup=QPalette::Active) const"
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.br
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.in -1c
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.SS "Protected Member Functions"
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.in +1c
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.RI "virtual void \fBdrawNeedle\fP (QPainter *painter, double length, QPalette::ColorGroup colorGroup) const =0"
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.br
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.RI "Draw the needle\&. "
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.ti -1c
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.RI "virtual void \fBdrawKnob\fP (QPainter *, double width, const QBrush &, bool sunken) const"
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.br
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.RI "Draw the knob\&. "
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.in -1c
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.SH "Detailed Description"
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.PP
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Base class for needles that can be used in a \fBQwtDial\fP\&.
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\fBQwtDialNeedle\fP is a pointer that indicates a value by pointing to a specific direction\&.
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.PP
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\fBSee also\fP
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.RS 4
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\fBQwtDial\fP, \fBQwtCompass\fP
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.RE
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.PP
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.PP
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Definition at line 27 of file qwt_dial_needle\&.h\&.
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.SH "Member Function Documentation"
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.PP
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.SS "void QwtDialNeedle::draw (QPainter * painter, const QPointF & center, double length, double direction, QPalette::ColorGroup colorGroup = \fCQPalette::Active\fP) const\fC [virtual]\fP"
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Draw the needle
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.PP
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\fBParameters\fP
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.RS 4
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\fIpainter\fP Painter
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.br
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\fIcenter\fP Center of the dial, start position for the needle
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.br
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\fIlength\fP Length of the needle
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.br
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\fIdirection\fP Direction of the needle, in degrees counter clockwise
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.br
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\fIcolorGroup\fP Color group, used for painting
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.RE
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.PP
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.PP
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Definition at line 219 of file qwt_dial_needle\&.cpp\&.
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.SS "virtual void QwtDialNeedle::drawNeedle (QPainter * painter, double length, QPalette::ColorGroup colorGroup) const\fC [protected]\fP, \fC [pure virtual]\fP"
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.PP
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Draw the needle\&. The origin of the needle is at position (0\&.0, 0\&.0 ) pointing in direction 0\&.0 ( = east )\&.
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.PP
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The painter is already initialized with translation and rotation\&.
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.PP
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\fBParameters\fP
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.RS 4
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\fIpainter\fP Painter
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.br
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\fIlength\fP Length of the needle
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.br
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\fIcolorGroup\fP Color group, used for painting
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.RE
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.PP
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\fBSee also\fP
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.RS 4
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\fBsetPalette()\fP, \fBpalette()\fP
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.RE
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.PP
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.PP
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Implemented in \fBQwtCompassWindArrow\fP, \fBQwtCompassMagnetNeedle\fP, and \fBQwtDialSimpleNeedle\fP\&.
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.SS "const QPalette & QwtDialNeedle::palette () const"
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.PP
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\fBReturns\fP
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.RS 4
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the palette of the needle\&.
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.RE
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.PP
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.PP
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Definition at line 205 of file qwt_dial_needle\&.cpp\&.
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.SS "void QwtDialNeedle::setPalette (const QPalette & palette)\fC [virtual]\fP"
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Sets the palette for the needle\&.
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.PP
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\fBParameters\fP
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.RS 4
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\fIpalette\fP New Palette
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.RE
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.PP
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.PP
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Definition at line 197 of file qwt_dial_needle\&.cpp\&.
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.SH "Author"
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.PP
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Generated automatically by Doxygen for Qwt User's Guide from the source code\&.
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