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<h1>qwt_drange.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_DBLRANGE_H</span>
00011 <span class="preprocessor"></span><span class="preprocessor">#define QWT_DBLRANGE_H</span>
00012 <span class="preprocessor"></span>
00013 <span class="preprocessor">#include "qwt_global.h"</span>
00014
<a name="l00031"></a><a class="code" href="class_qwt_dbl_range.html">00031</a> <span class="keyword">class </span>QWT_EXPORT QwtDblRange
00032 {
00033 <span class="keyword">public</span>:
00034 QwtDblRange();
00035 <span class="keyword">virtual</span> ~QwtDblRange();
00036
00037 <span class="keywordtype">void</span> setRange(<span class="keywordtype">double</span> vmin, <span class="keywordtype">double</span> vmax, <span class="keywordtype">double</span> vstep = 0.0,
00038 <span class="keywordtype">int</span> pagesize = 1);
00039
00040 <span class="keywordtype">void</span> setValid(<span class="keywordtype">bool</span>);
00041 <span class="keywordtype">bool</span> isValid() <span class="keyword">const</span>;
00042
00043 <span class="keyword">virtual</span> <span class="keywordtype">void</span> setValue(<span class="keywordtype">double</span>);
00044 <span class="keywordtype">double</span> value() <span class="keyword">const</span>;
00045
00046 <span class="keywordtype">void</span> setPeriodic(<span class="keywordtype">bool</span> tf);
00047 <span class="keywordtype">bool</span> periodic() <span class="keyword">const</span>;
00048
00049 <span class="keywordtype">void</span> setStep(<span class="keywordtype">double</span>);
00050 <span class="keywordtype">double</span> step() <span class="keyword">const</span>;
00051
00052 <span class="keywordtype">double</span> maxValue() <span class="keyword">const</span>;
00053 <span class="keywordtype">double</span> minValue() <span class="keyword">const</span>;
00054
00055 <span class="keywordtype">int</span> pageSize() <span class="keyword">const</span>;
00056
00057 <span class="keyword">virtual</span> <span class="keywordtype">void</span> incValue(<span class="keywordtype">int</span>);
00058 <span class="keyword">virtual</span> <span class="keywordtype">void</span> incPages(<span class="keywordtype">int</span>);
00059 <span class="keyword">virtual</span> <span class="keywordtype">void</span> fitValue(<span class="keywordtype">double</span>);
00060
00061 <span class="keyword">protected</span>:
00062
00063 <span class="keywordtype">double</span> exactValue() <span class="keyword">const</span>;
00064 <span class="keywordtype">double</span> exactPrevValue() <span class="keyword">const</span>;
00065 <span class="keywordtype">double</span> prevValue() <span class="keyword">const</span>;
00066
00067 <span class="keyword">virtual</span> <span class="keywordtype">void</span> valueChange();
00068 <span class="keyword">virtual</span> <span class="keywordtype">void</span> stepChange();
00069 <span class="keyword">virtual</span> <span class="keywordtype">void</span> rangeChange();
00070
00071 <span class="keyword">private</span>:
00072 <span class="keywordtype">void</span> setNewValue(<span class="keywordtype">double</span> x,<span class="keywordtype">int</span> align = 0);
00073
00074 <span class="keywordtype">double</span> d_minValue;
00075 <span class="keywordtype">double</span> d_maxValue;
00076 <span class="keywordtype">double</span> d_step;
00077 <span class="keywordtype">int</span> d_pageSize;
00078
00079 <span class="keywordtype">bool</span> d_isValid;
00080 <span class="keywordtype">double</span> d_value;
00081 <span class="keywordtype">double</span> d_exactValue;
00082 <span class="keywordtype">double</span> d_exactPrevValue;
00083 <span class="keywordtype">double</span> d_prevValue;
00084
00085 <span class="keywordtype">bool</span> d_periodic;
00086 };
00087
00088 <span class="preprocessor">#endif</span>
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