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<h1>qwt_knob.h</h1><pre class="fragment"><div>00001 <span class="comment">/* -*- mode: C++ ; c-file-style: "stroustrup" -*- *****************************</span>
00002 <span class="comment"> * Qwt Widget Library</span>
00003 <span class="comment"> * Copyright (C) 1997 Josef Wilgen</span>
00004 <span class="comment"> * Copyright (C) 2002 Uwe Rathmann</span>
00005 <span class="comment"> *</span>
00006 <span class="comment"> * This library is free software; you can redistribute it and/or</span>
00007 <span class="comment"> * modify it under the terms of the Qwt License, Version 1.0</span>
00008 <span class="comment"> *****************************************************************************/</span>
00009
00010 <span class="preprocessor">#ifndef QWT_KNOB_H</span>
00011 <span class="preprocessor"></span><span class="preprocessor">#define QWT_KNOB_H</span>
00012 <span class="preprocessor"></span>
00013 <span class="preprocessor">#include "qwt_global.h"</span>
00014 <span class="preprocessor">#include "qwt_sldbase.h"</span>
00015 <span class="preprocessor">#include "qwt_sclif.h"</span>
00016
<a name="l00032"></a><a class="code" href="class_qwt_knob.html">00032</a> <span class="keyword">class </span>QWT_EXPORT QwtKnob : <span class="keyword">public</span> <a class="code" href="class_qwt_slider_base.html">QwtSliderBase</a>, <span class="keyword">public</span> <a class="code" href="class_qwt_scale_if.html">QwtScaleIf</a>
00033 {
00034 Q_OBJECT
00035 Q_ENUMS (Symbol)
00036 Q_PROPERTY( <span class="keywordtype">int</span> knobWidth READ knobWidth WRITE setKnobWidth )
00037 Q_PROPERTY( <span class="keywordtype">int</span> borderWidth READ borderWidth WRITE setBorderWidth )
00038 Q_PROPERTY( <span class="keywordtype">double</span> totalAngle READ totalAngle WRITE setTotalAngle )
00039 Q_PROPERTY( Symbol symbol READ symbol WRITE setSymbol )
00040
00041 <span class="keyword">public</span>:
<a name="l00047"></a><a class="code" href="class_qwt_knob.html#w2">00047</a> <span class="keyword">enum</span> Symbol { Line, Dot };
00048
00049 QwtKnob(QWidget* parent = 0, <span class="keyword">const</span> <span class="keywordtype">char</span> *name = 0);
00050 <span class="keyword">virtual</span> ~QwtKnob();
00051
00052 <span class="keywordtype">void</span> setKnobWidth(<span class="keywordtype">int</span> w);
00053 <span class="keywordtype">void</span> setTotalAngle (<span class="keywordtype">double</span> angle);
00054 <span class="keywordtype">void</span> setBorderWidth(<span class="keywordtype">int</span> bw);
00055
<a name="l00057"></a><a class="code" href="class_qwt_knob.html#a5">00057</a> <span class="keywordtype">int</span> knobWidth()<span class="keyword"> const </span>{<span class="keywordflow">return</span> d_knobWidth;};
<a name="l00059"></a><a class="code" href="class_qwt_knob.html#a6">00059</a> <span class="keywordtype">double</span> totalAngle()<span class="keyword"> const </span>{<span class="keywordflow">return</span> d_totalAngle;};
<a name="l00061"></a><a class="code" href="class_qwt_knob.html#a7">00061</a> <span class="keywordtype">int</span> borderWidth()<span class="keyword"> const </span>{<span class="keywordflow">return</span> d_borderWidth;};
00062
00063 <span class="keywordtype">void</span> setSymbol(Symbol);
00064 Symbol symbol() const;
00065
00066 virtual QSize sizeHint() const;
00067 virtual QSize minimumSizeHint() const;
00068
00069 protected:
00070 virtual <span class="keywordtype">void</span> paintEvent(QPaintEvent *e);
00071 virtual <span class="keywordtype">void</span> resizeEvent(QResizeEvent *e);
00072
00073 <span class="keywordtype">void</span> draw(QPainter *p, const QRect& ur);
00074 <span class="keywordtype">void</span> drawKnob(QPainter *p, const QRect &r);
00075 <span class="keywordtype">void</span> drawMarker(QPainter *p, <span class="keywordtype">double</span> arc, const QColor &c);
00076
00077 private:
00078 <span class="keywordtype">void</span> layoutKnob( <span class="keywordtype">bool</span> update = TRUE );
00079 <span class="keywordtype">double</span> getValue(const QPoint &p);
00080 <span class="keywordtype">void</span> getScrollMode( const QPoint &p, <span class="keywordtype">int</span> &scrollMode, <span class="keywordtype">int</span> &direction );
00081 <span class="keywordtype">void</span> recalcAngle();
00082
00083 virtual <span class="keywordtype">void</span> valueChange();
00084 virtual <span class="keywordtype">void</span> rangeChange();
00085 virtual <span class="keywordtype">void</span> scaleChange();
00086 virtual <span class="keywordtype">void</span> fontChange(const QFont &oldFont);
00087
00088 <span class="keywordtype">int</span> d_borderWidth;
00089 <span class="keywordtype">int</span> d_borderDist;
00090 <span class="keywordtype">int</span> d_hasScale;
00091 <span class="keywordtype">int</span> d_scaleDist;
00092 <span class="keywordtype">int</span> d_maxScaleTicks;
00093 <span class="keywordtype">int</span> d_knobWidth;
00094 <span class="keywordtype">int</span> d_dotWidth;
00095
00096 Symbol d_symbol;
00097 <span class="keywordtype">double</span> d_angle;
00098 <span class="keywordtype">double</span> d_oldAngle;
00099 <span class="keywordtype">double</span> d_totalAngle;
00100 <span class="keywordtype">double</span> d_nTurns;
00101
00102 QRect d_kRect;
00103 };
00104
00105 #endif
00106
00107 <span class="comment">// Local Variables:</span>
00108 <span class="comment">// mode: C++</span>
00109 <span class="comment">// c-file-style: "stroustrup"</span>
00110 <span class="comment">// indent-tabs-mode: nil</span>
00111 <span class="comment">// End:</span>
</div></pre><hr size="1"><address style="align: right;"><small>Generated on Tue Nov 16 21:12:20 2004 for Qwt User's Guide by
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