qwtdialneedle.3

linux下qt的第三方的一个类

.TH "QwtDialNeedle" 3 "16 Nov 2004" "Version 4.2.0" "Qwt User's Guide" \" -*- nroff -*-
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.SH NAME
QwtDialNeedle \- 
.SH SYNOPSIS
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.PP
Inherited by \fBQwtCompassMagnetNeedle\fP, \fBQwtCompassWindArrow\fP, and \fBQwtDialSimpleNeedle\fP.
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.SH "Detailed Description"
.PP 
Base class for needles that can be used in a \fBQwtDial\fP. 

QwtDialNeedle is a pointer that indicates a value by pointing to a specific direction.
.PP
Qwt is missing a set of good looking needles. Contributions are very welcome.
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\fBSee also:\fP
.RS 4
\fBQwtDial\fP, \fBQwtCompass\fP 
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Definition at line 31 of file qwt_dial_needle.h.
.SS "Public Member Functions"

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.RI "\fBQwtDialNeedle\fP ()"
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.RI "virtual \fB~QwtDialNeedle\fP ()"
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.RI "virtual void \fBdraw\fP (QPainter *painter, const QPoint &center, int length, double direction, QPalette::ColorGroup cg=QPalette::Active) const =0"
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.RI "virtual void \fBsetPalette\fP (const QPalette &)"
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.RI "const QPalette & \fBpalette\fP () const"
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.SS "Protected Member Functions"

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.RI "const QColorGroup & \fBcolorGroup\fP (QPalette::ColorGroup) const"
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.SS "Static Protected Member Functions"

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.RI "void \fBdrawKnob\fP (QPainter *, const QPoint &pos, int width, const QBrush &, bool sunken)"
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.SH "Constructor & Destructor Documentation"
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.SS "QwtDialNeedle::QwtDialNeedle ()"
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Constructor. 
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Definition at line 18 of file qwt_dial_needle.cpp.
.SS "QwtDialNeedle::~\fBQwtDialNeedle\fP ()\fC [virtual]\fP"
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Destructor. 
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Definition at line 24 of file qwt_dial_needle.cpp.
.SH "Member Function Documentation"
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.SS "const QColorGroup & QwtDialNeedle::colorGroup (QPalette::ColorGroup cg) const\fC [protected]\fP"
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\fBParameters:\fP
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\fIcg\fP Identifier of the color group 
.RE
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\fBReturns:\fP
.RS 4
The color group of the palette. 
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Definition at line 85 of file qwt_dial_needle.cpp.
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Referenced by QwtCompassWindArrow::draw(), QwtCompassMagnetNeedle::draw(), and QwtDialSimpleNeedle::draw().
.SS "virtual void QwtDialNeedle::draw (QPainter * painter, const QPoint & center, int length, double direction, QPalette::ColorGroup cg = \fCQPalette::Active\fP) const\fC [pure virtual]\fP"
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Draw the needle
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\fBParameters:\fP
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\fIpainter\fP Painter 
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\fIcenter\fP Center of the dial, start position for the needle 
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\fIlength\fP Length of the needle 
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\fIdirection\fP Direction of the needle, in degrees counter clockwise 
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\fIcg\fP Color group, used for painting 
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Implemented in \fBQwtDialSimpleNeedle\fP, \fBQwtCompassMagnetNeedle\fP, and \fBQwtCompassWindArrow\fP.
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Referenced by QwtAnalogClock::drawHand(), and QwtDial::drawNeedle().
.SS "void QwtDialNeedle::drawKnob (QPainter *, const QPoint & pos, int width, const QBrush &, bool sunken)\fC [static, protected]\fP"
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Draw the knob. 
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Definition at line 47 of file qwt_dial_needle.cpp.
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Referenced by QwtDialSimpleNeedle::drawArrowNeedle(), QwtDialSimpleNeedle::drawRayNeedle(), and QwtCompassMagnetNeedle::drawThinNeedle().
.SS "const QPalette & QwtDialNeedle::palette () const"
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\fBReturns:\fP
.RS 4
the palette of the needle. 
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Definition at line 41 of file qwt_dial_needle.cpp.
.SS "void QwtDialNeedle::setPalette (const QPalette & palette)\fC [virtual]\fP"
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Sets the palette for the needle.
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\fBParameters:\fP
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\fIpalette\fP New Palette 
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Definition at line 33 of file qwt_dial_needle.cpp.
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Referenced by QwtCompassMagnetNeedle::QwtCompassMagnetNeedle(), QwtCompassWindArrow::QwtCompassWindArrow(), and QwtDialSimpleNeedle::QwtDialSimpleNeedle().

.SH "Author"
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