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<title>Qwt User's Guide: qwt_scale_engine.h Source File</title>
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<h1>qwt_scale_engine.h</h1><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="comment">/* -*- mode: C++ ; c-file-style: "stroustrup" -*- *****************************</span>
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<a name="l00002"></a>00002 <span class="comment"> * Qwt Widget Library</span>
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<a name="l00003"></a>00003 <span class="comment"> * Copyright (C) 1997 Josef Wilgen</span>
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<a name="l00004"></a>00004 <span class="comment"> * Copyright (C) 2002 Uwe Rathmann</span>
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<a name="l00005"></a>00005 <span class="comment"> * </span>
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<a name="l00006"></a>00006 <span class="comment"> * This library is free software; you can redistribute it and/or</span>
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<a name="l00007"></a>00007 <span class="comment"> * modify it under the terms of the Qwt License, Version 1.0</span>
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<a name="l00008"></a>00008 <span class="comment"> *****************************************************************************/</span>
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<a name="l00009"></a>00009
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<a name="l00010"></a>00010 <span class="preprocessor">#ifndef QWT_SCALE_ENGINE_H</span>
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<a name="l00011"></a>00011 <span class="preprocessor"></span><span class="preprocessor">#define QWT_SCALE_ENGINE_H</span>
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<a name="l00012"></a>00012 <span class="preprocessor"></span>
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<a name="l00013"></a>00013 <span class="preprocessor">#include "qwt_global.h"</span>
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<a name="l00014"></a>00014 <span class="preprocessor">#include "qwt_scale_div.h"</span>
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<a name="l00015"></a>00015 <span class="preprocessor">#include "qwt_double_interval.h"</span>
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<a name="l00016"></a>00016
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<a name="l00017"></a>00017 <span class="keyword">class </span><a class="code" href="class_qwt_scale_transformation.html">QwtScaleTransformation</a>;
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<a name="l00018"></a>00018
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<a name="l00022"></a><a class="code" href="class_qwt_scale_arithmetic.html">00022</a> <span class="keyword">class </span>QWT_EXPORT <a class="code" href="class_qwt_scale_arithmetic.html">QwtScaleArithmetic</a>
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<a name="l00023"></a>00023 {
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<a name="l00024"></a>00024 <span class="keyword">public</span>:
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<a name="l00025"></a>00025 <span class="keyword">static</span> <span class="keywordtype">int</span> compareEps(
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<a name="l00026"></a>00026 <span class="keywordtype">double</span> value1, <span class="keywordtype">double</span> value2, <span class="keywordtype">double</span> intervalSize);
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<a name="l00027"></a>00027
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<a name="l00028"></a>00028 <span class="keyword">static</span> <span class="keywordtype">double</span> ceilEps(<span class="keywordtype">double</span> value, <span class="keywordtype">double</span> intervalSize);
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<a name="l00029"></a>00029 <span class="keyword">static</span> <span class="keywordtype">double</span> floorEps(<span class="keywordtype">double</span> value, <span class="keywordtype">double</span> intervalSize);
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<a name="l00030"></a>00030
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<a name="l00031"></a>00031 <span class="keyword">static</span> <span class="keywordtype">double</span> divideEps(<span class="keywordtype">double</span> interval, <span class="keywordtype">double</span> steps);
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<a name="l00032"></a>00032
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<a name="l00033"></a>00033 <span class="keyword">static</span> <span class="keywordtype">double</span> ceil125(<span class="keywordtype">double</span> x);
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<a name="l00034"></a>00034 <span class="keyword">static</span> <span class="keywordtype">double</span> floor125(<span class="keywordtype">double</span> x);
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<a name="l00035"></a>00035 };
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<a name="l00036"></a>00036
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<a name="l00050"></a><a class="code" href="class_qwt_scale_engine.html">00050</a> <span class="keyword">class </span>QWT_EXPORT QwtScaleEngine
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<a name="l00051"></a>00051 {
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<a name="l00052"></a>00052 <span class="keyword">public</span>:
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<a name="l00054"></a><a class="code" href="class_qwt_scale_engine.html#7548418e0896d75eec164bfa2ba3ff5f">00054</a> <span class="keyword">enum</span> <a class="code" href="class_qwt_scale_engine.html#7548418e0896d75eec164bfa2ba3ff5f">Attribute</a>
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<a name="l00055"></a>00055 {
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<a name="l00056"></a>00056 NoAttribute = 0,
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<a name="l00057"></a>00057 IncludeReference = 1,
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<a name="l00058"></a>00058 Symmetric = 2,
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<a name="l00059"></a>00059 Floating = 4,
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<a name="l00060"></a>00060 Inverted = 8
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<a name="l00061"></a>00061 };
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<a name="l00062"></a>00062
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<a name="l00063"></a>00063 <span class="keyword">explicit</span> QwtScaleEngine();
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<a name="l00064"></a>00064 <span class="keyword">virtual</span> ~QwtScaleEngine();
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<a name="l00065"></a>00065
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<a name="l00066"></a>00066 <span class="keywordtype">void</span> setAttribute(Attribute, <span class="keywordtype">bool</span> on = <span class="keyword">true</span>);
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<a name="l00067"></a>00067 <span class="keywordtype">bool</span> testAttribute(Attribute) <span class="keyword">const</span>;
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<a name="l00068"></a>00068
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<a name="l00069"></a>00069 <span class="keywordtype">void</span> setAttributes(<span class="keywordtype">int</span>);
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<a name="l00070"></a>00070 <span class="keywordtype">int</span> attributes() <span class="keyword">const</span>;
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<a name="l00071"></a>00071
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<a name="l00072"></a>00072 <span class="keywordtype">void</span> setReference(<span class="keywordtype">double</span> reference);
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<a name="l00073"></a>00073 <span class="keywordtype">double</span> reference() <span class="keyword">const</span>;
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<a name="l00074"></a>00074
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<a name="l00075"></a>00075 <span class="keywordtype">void</span> setMargins(<span class="keywordtype">double</span> m1, <span class="keywordtype">double</span> m2);
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<a name="l00076"></a>00076 <span class="keywordtype">double</span> loMargin() <span class="keyword">const</span>;
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<a name="l00077"></a>00077 <span class="keywordtype">double</span> hiMargin() <span class="keyword">const</span>;
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<a name="l00078"></a>00078
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<a name="l00087"></a>00087 <span class="keyword">virtual</span> <span class="keywordtype">void</span> autoScale(<span class="keywordtype">int</span> maxNumSteps,
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<a name="l00088"></a>00088 <span class="keywordtype">double</span> &x1, <span class="keywordtype">double</span> &x2, <span class="keywordtype">double</span> &stepSize) <span class="keyword">const </span>= 0;
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<a name="l00089"></a>00089
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<a name="l00100"></a>00100 <span class="keyword">virtual</span> <a class="code" href="class_qwt_scale_div.html">QwtScaleDiv</a> divideScale(<span class="keywordtype">double</span> x1, <span class="keywordtype">double</span> x2,
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<a name="l00101"></a>00101 <span class="keywordtype">int</span> maxMajSteps, <span class="keywordtype">int</span> maxMinSteps,
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<a name="l00102"></a>00102 <span class="keywordtype">double</span> stepSize = 0.0) <span class="keyword">const </span>= 0;
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<a name="l00103"></a>00103
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<a name="l00105"></a>00105 <span class="keyword">virtual</span> <a class="code" href="class_qwt_scale_transformation.html">QwtScaleTransformation</a> *transformation() <span class="keyword">const </span>= 0;
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<a name="l00106"></a>00106
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<a name="l00107"></a>00107 <span class="keyword">protected</span>:
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<a name="l00108"></a>00108 <span class="keywordtype">bool</span> contains(<span class="keyword">const</span> <a class="code" href="class_qwt_double_interval.html">QwtDoubleInterval</a> &, <span class="keywordtype">double</span> val) <span class="keyword">const</span>;
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<a name="l00109"></a>00109 QwtValueList strip(<span class="keyword">const</span> QwtValueList&, <span class="keyword">const</span> <a class="code" href="class_qwt_double_interval.html">QwtDoubleInterval</a> &) <span class="keyword">const</span>;
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<a name="l00110"></a>00110 <span class="keywordtype">double</span> divideInterval(<span class="keywordtype">double</span> interval, <span class="keywordtype">int</span> numSteps) <span class="keyword">const</span>;
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<a name="l00111"></a>00111
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<a name="l00112"></a>00112 <a class="code" href="class_qwt_double_interval.html">QwtDoubleInterval</a> buildInterval(<span class="keywordtype">double</span> v) <span class="keyword">const</span>;
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<a name="l00113"></a>00113
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<a name="l00114"></a>00114 <span class="keyword">private</span>:
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<a name="l00115"></a>00115 <span class="keyword">class </span>PrivateData;
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<a name="l00116"></a>00116 PrivateData *d_data;
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<a name="l00117"></a>00117 };
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<a name="l00118"></a>00118
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<a name="l00126"></a><a class="code" href="class_qwt_linear_scale_engine.html">00126</a> <span class="keyword">class </span>QWT_EXPORT QwtLinearScaleEngine: <span class="keyword">public</span> QwtScaleEngine
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<a name="l00127"></a>00127 {
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<a name="l00128"></a>00128 <span class="keyword">public</span>:
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<a name="l00129"></a>00129 <span class="keyword">virtual</span> <span class="keywordtype">void</span> <a class="code" href="class_qwt_scale_engine.html#a27323d6d9d5348bd253a61b45e4785b">autoScale</a>(<span class="keywordtype">int</span> maxSteps,
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<a name="l00130"></a>00130 <span class="keywordtype">double</span> &x1, <span class="keywordtype">double</span> &x2, <span class="keywordtype">double</span> &stepSize) <span class="keyword">const</span>;
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<a name="l00131"></a>00131
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<a name="l00132"></a>00132 <span class="keyword">virtual</span> <a class="code" href="class_qwt_scale_div.html">QwtScaleDiv</a> <a class="code" href="class_qwt_scale_engine.html#833fbdad4cce6e3b6448ee2549dc09e1">divideScale</a>(<span class="keywordtype">double</span> x1, <span class="keywordtype">double</span> x2,
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<a name="l00133"></a>00133 <span class="keywordtype">int</span> numMajorSteps, <span class="keywordtype">int</span> numMinorSteps,
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<a name="l00134"></a>00134 <span class="keywordtype">double</span> stepSize = 0.0) <span class="keyword">const</span>;
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<a name="l00135"></a>00135
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<a name="l00136"></a>00136 <span class="keyword">virtual</span> <a class="code" href="class_qwt_scale_transformation.html">QwtScaleTransformation</a> *<a class="code" href="class_qwt_scale_engine.html#04a93d0dc39a3483957764e7749989fd">transformation</a>() <span class="keyword">const</span>;
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<a name="l00137"></a>00137
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<a name="l00138"></a>00138 <span class="keyword">protected</span>:
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<a name="l00139"></a>00139 <a class="code" href="class_qwt_double_interval.html">QwtDoubleInterval</a> align(<span class="keyword">const</span> <a class="code" href="class_qwt_double_interval.html">QwtDoubleInterval</a>&,
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<a name="l00140"></a>00140 <span class="keywordtype">double</span> stepSize) <span class="keyword">const</span>;
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<a name="l00141"></a>00141
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<a name="l00142"></a>00142 <span class="keyword">private</span>:
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<a name="l00143"></a>00143 <span class="keywordtype">void</span> buildTicks(
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<a name="l00144"></a>00144 <span class="keyword">const</span> <a class="code" href="class_qwt_double_interval.html">QwtDoubleInterval</a> &, <span class="keywordtype">double</span> stepSize, <span class="keywordtype">int</span> maxMinSteps,
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<a name="l00145"></a>00145 QwtValueList ticks[QwtScaleDiv::NTickTypes]) <span class="keyword">const</span>;
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<a name="l00146"></a>00146
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<a name="l00147"></a>00147 <span class="keywordtype">void</span> buildMinorTicks(
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<a name="l00148"></a>00148 <span class="keyword">const</span> QwtValueList& majorTicks,
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<a name="l00149"></a>00149 <span class="keywordtype">int</span> maxMinMark, <span class="keywordtype">double</span> step,
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<a name="l00150"></a>00150 QwtValueList &, QwtValueList &) <span class="keyword">const</span>;
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<a name="l00151"></a>00151
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<a name="l00152"></a>00152 QwtValueList buildMajorTicks(
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<a name="l00153"></a>00153 <span class="keyword">const</span> <a class="code" href="class_qwt_double_interval.html">QwtDoubleInterval</a> &interval, <span class="keywordtype">double</span> stepSize) <span class="keyword">const</span>;
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<a name="l00154"></a>00154 };
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<a name="l00155"></a>00155
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<a name="l00167"></a><a class="code" href="class_qwt_log10_scale_engine.html">00167</a> <span class="keyword">class </span>QWT_EXPORT QwtLog10ScaleEngine: <span class="keyword">public</span> QwtScaleEngine
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<a name="l00168"></a>00168 {
129
<a name="l00169"></a>00169 <span class="keyword">public</span>:
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<a name="l00170"></a>00170 <span class="keyword">virtual</span> <span class="keywordtype">void</span> <a class="code" href="class_qwt_scale_engine.html#a27323d6d9d5348bd253a61b45e4785b">autoScale</a>(<span class="keywordtype">int</span> maxSteps,
131
<a name="l00171"></a>00171 <span class="keywordtype">double</span> &x1, <span class="keywordtype">double</span> &x2, <span class="keywordtype">double</span> &stepSize) <span class="keyword">const</span>;
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<a name="l00172"></a>00172
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<a name="l00173"></a>00173 <span class="keyword">virtual</span> <a class="code" href="class_qwt_scale_div.html">QwtScaleDiv</a> <a class="code" href="class_qwt_scale_engine.html#833fbdad4cce6e3b6448ee2549dc09e1">divideScale</a>(<span class="keywordtype">double</span> x1, <span class="keywordtype">double</span> x2,
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<a name="l00174"></a>00174 <span class="keywordtype">int</span> numMajorSteps, <span class="keywordtype">int</span> numMinorSteps,
135
<a name="l00175"></a>00175 <span class="keywordtype">double</span> stepSize = 0.0) <span class="keyword">const</span>;
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<a name="l00176"></a>00176
137
<a name="l00177"></a>00177 <span class="keyword">virtual</span> <a class="code" href="class_qwt_scale_transformation.html">QwtScaleTransformation</a> *<a class="code" href="class_qwt_scale_engine.html#04a93d0dc39a3483957764e7749989fd">transformation</a>() <span class="keyword">const</span>;
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<a name="l00178"></a>00178
139
<a name="l00179"></a>00179 <span class="keyword">protected</span>:
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<a name="l00180"></a>00180 <a class="code" href="class_qwt_double_interval.html">QwtDoubleInterval</a> log10(<span class="keyword">const</span> <a class="code" href="class_qwt_double_interval.html">QwtDoubleInterval</a>&) <span class="keyword">const</span>;
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<a name="l00181"></a>00181 <a class="code" href="class_qwt_double_interval.html">QwtDoubleInterval</a> pow10(<span class="keyword">const</span> <a class="code" href="class_qwt_double_interval.html">QwtDoubleInterval</a>&) <span class="keyword">const</span>;
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<a name="l00182"></a>00182
143
<a name="l00183"></a>00183 <span class="keyword">private</span>:
144
<a name="l00184"></a>00184 <a class="code" href="class_qwt_double_interval.html">QwtDoubleInterval</a> align(<span class="keyword">const</span> <a class="code" href="class_qwt_double_interval.html">QwtDoubleInterval</a>&,
145
<a name="l00185"></a>00185 <span class="keywordtype">double</span> stepSize) <span class="keyword">const</span>;
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<a name="l00186"></a>00186
147
<a name="l00187"></a>00187 <span class="keywordtype">void</span> buildTicks(
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<a name="l00188"></a>00188 <span class="keyword">const</span> <a class="code" href="class_qwt_double_interval.html">QwtDoubleInterval</a> &, <span class="keywordtype">double</span> stepSize, <span class="keywordtype">int</span> maxMinSteps,
149
<a name="l00189"></a>00189 QwtValueList ticks[QwtScaleDiv::NTickTypes]) <span class="keyword">const</span>;
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<a name="l00190"></a>00190
151
<a name="l00191"></a>00191 QwtValueList buildMinorTicks(
152
<a name="l00192"></a>00192 <span class="keyword">const</span> QwtValueList& majorTicks,
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<a name="l00193"></a>00193 <span class="keywordtype">int</span> maxMinMark, <span class="keywordtype">double</span> step) <span class="keyword">const</span>;
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<a name="l00194"></a>00194
155
<a name="l00195"></a>00195 QwtValueList buildMajorTicks(
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<a name="l00196"></a>00196 <span class="keyword">const</span> <a class="code" href="class_qwt_double_interval.html">QwtDoubleInterval</a> &interval, <span class="keywordtype">double</span> stepSize) <span class="keyword">const</span>;
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<a name="l00197"></a>00197 };
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<a name="l00198"></a>00198
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<a name="l00199"></a>00199 <span class="preprocessor">#endif</span>
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</pre></div><hr size="1"><address style="align: right;"><small>Generated on Mon Jun 11 07:41:39 2007 for Qwt User's Guide by
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<a href="http://www.doxygen.org/index.html">
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<img src="doxygen.png" alt="doxygen" align="middle" border="0"></a> 1.4.6 </small></address>
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qwt-5.0.2/doc/html/qwt__scale__engine_8h-source.html
