qwt__compass_8cpp-source.html
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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"><html><head><meta http-equiv="Content-Type" content="text/html;charset=iso-8859-1"><title>Qwt User's Guide: qwt_compass.cpp Source File</title><link href="doxygen.css" rel="stylesheet" type="text/css"><link href="tabs.css" rel="stylesheet" type="text/css"></head><body><!-- Generated by Doxygen 1.4.6 --><div class="tabs"> <ul> <li><a href="index.html"><span>Main Page</span></a></li> <li><a href="classes.html"><span>Classes</span></a></li> <li id="current"><a href="files.html"><span>Files</span></a></li> <li><a href="pages.html"><span>Related Pages</span></a></li> </ul></div><h1>qwt_compass.cpp</h1><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="comment">/* -*- mode: C++ ; c-file-style: "stroustrup" -*- *****************************</span><a name="l00002"></a>00002 <span class="comment"> * Qwt Widget Library</span><a name="l00003"></a>00003 <span class="comment"> * Copyright (C) 1997 Josef Wilgen</span><a name="l00004"></a>00004 <span class="comment"> * Copyright (C) 2002 Uwe Rathmann</span><a name="l00005"></a>00005 <span class="comment"> *</span><a name="l00006"></a>00006 <span class="comment"> * This library is free software; you can redistribute it and/or</span><a name="l00007"></a>00007 <span class="comment"> * modify it under the terms of the Qwt License, Version 1.0</span><a name="l00008"></a>00008 <span class="comment"> *****************************************************************************/</span><a name="l00009"></a>00009 <a name="l00010"></a>00010 <span class="comment">// vim: expandtab</span><a name="l00011"></a>00011 <a name="l00012"></a>00012 <span class="preprocessor">#include <math.h></span><a name="l00013"></a>00013 <span class="preprocessor">#include <qpainter.h></span><a name="l00014"></a>00014 <span class="preprocessor">#include <qpixmap.h></span><a name="l00015"></a>00015 <span class="preprocessor">#include <qevent.h></span><a name="l00016"></a>00016 <span class="preprocessor">#include "qwt_math.h"</span><a name="l00017"></a>00017 <span class="preprocessor">#include "qwt_scale_draw.h"</span><a name="l00018"></a>00018 <span class="preprocessor">#include "qwt_paint_buffer.h"</span><a name="l00019"></a>00019 <span class="preprocessor">#include "qwt_painter.h"</span><a name="l00020"></a>00020 <span class="preprocessor">#include "qwt_dial_needle.h"</span><a name="l00021"></a>00021 <span class="preprocessor">#include "qwt_compass_rose.h"</span><a name="l00022"></a>00022 <span class="preprocessor">#include "qwt_compass.h"</span><a name="l00023"></a>00023 <a name="l00024"></a>00024 <span class="keyword">class </span>QwtCompass::PrivateData<a name="l00025"></a>00025 {<a name="l00026"></a>00026 <span class="keyword">public</span>:<a name="l00027"></a>00027 PrivateData():<a name="l00028"></a>00028 <a class="code" href="class_qwt_compass.html#7405a44d947e16f53b11dea4544d7683">rose</a>(NULL)<a name="l00029"></a>00029 {<a name="l00030"></a>00030 }<a name="l00031"></a>00031 <a name="l00032"></a>00032 ~PrivateData()<a name="l00033"></a>00033 {<a name="l00034"></a>00034 <span class="keyword">delete</span> <a class="code" href="class_qwt_compass.html#7405a44d947e16f53b11dea4544d7683">rose</a>;<a name="l00035"></a>00035 }<a name="l00036"></a>00036 <a name="l00037"></a>00037 <a class="code" href="class_qwt_compass_rose.html">QwtCompassRose</a> *<a class="code" href="class_qwt_compass.html#7405a44d947e16f53b11dea4544d7683">rose</a>;<a name="l00038"></a>00038 QMap<double, QString> <a class="code" href="class_qwt_compass.html#ccc25cd9b9b23769711b7f04f9a4c464">labelMap</a>;<a name="l00039"></a>00039 };<a name="l00040"></a>00040 <a name="l00050"></a><a class="code" href="class_qwt_compass.html#05357e2950a3dc534e68e3c21f6c6b94">00050</a> <a class="code" href="class_qwt_compass.html#05357e2950a3dc534e68e3c21f6c6b94">QwtCompass::QwtCompass</a>(QWidget* parent):<a name="l00051"></a>00051 <a class="code" href="class_qwt_dial.html">QwtDial</a>(parent)<a name="l00052"></a>00052 {<a name="l00053"></a>00053 initCompass();<a name="l00054"></a>00054 }<a name="l00055"></a>00055 <a name="l00056"></a>00056 <span class="preprocessor">#if QT_VERSION < 0x040000</span><a name="l00057"></a>00057 <span class="preprocessor"></span><a name="l00068"></a>00068 <a class="code" href="class_qwt_compass.html#05357e2950a3dc534e68e3c21f6c6b94">QwtCompass::QwtCompass</a>(QWidget* parent, <span class="keyword">const</span> <span class="keywordtype">char</span> *name):<a name="l00069"></a>00069 <a class="code" href="class_qwt_dial.html">QwtDial</a>(parent, name)<a name="l00070"></a>00070 {<a name="l00071"></a>00071 initCompass();<a name="l00072"></a>00072 }<a name="l00073"></a>00073 <a name="l00074"></a>00074 <span class="preprocessor">#endif</span><a name="l00075"></a>00075 <span class="preprocessor"></span><a name="l00077"></a><a class="code" href="class_qwt_compass.html#f6cc3b946f3761f7ce53d3a2ec000817">00077</a> <a class="code" href="class_qwt_compass.html#f6cc3b946f3761f7ce53d3a2ec000817">QwtCompass::~QwtCompass</a>() <a name="l00078"></a>00078 {<a name="l00079"></a>00079 <span class="keyword">delete</span> d_data;<a name="l00080"></a>00080 }<a name="l00081"></a>00081 <a name="l00082"></a>00082 <span class="keywordtype">void</span> QwtCompass::initCompass()<a name="l00083"></a>00083 {<a name="l00084"></a>00084 d_data = <span class="keyword">new</span> PrivateData;<a name="l00085"></a>00085 <a name="l00086"></a>00086 <a class="code" href="class_qwt_dial.html#b16e6f6559e1e897ef5c1218931bda1a">setScaleOptions</a>(ScaleLabel); <span class="comment">// Only labels, no backbone, no ticks</span><a name="l00087"></a>00087 <a name="l00088"></a>00088 <a class="code" href="class_qwt_dial.html#3f64c6fbac747f735e57c2073e93bc50">setOrigin</a>(270.0);<a name="l00089"></a>00089 <a class="code" href="class_qwt_dial.html#8d2cfa17acf266fd0273f0f477895499">setWrapping</a>(<span class="keyword">true</span>);<a name="l00090"></a>00090 <a name="l00091"></a>00091 <a name="l00092"></a>00092 d_data->labelMap.insert(0.0, QString::fromLatin1(<span class="stringliteral">"N"</span>));<a name="l00093"></a>00093 d_data->labelMap.insert(45.0, QString::fromLatin1(<span class="stringliteral">"NE"</span>));<a name="l00094"></a>00094 d_data->labelMap.insert(90.0, QString::fromLatin1(<span class="stringliteral">"E"</span>));<a name="l00095"></a>00095 d_data->labelMap.insert(135.0, QString::fromLatin1(<span class="stringliteral">"SE"</span>));<a name="l00096"></a>00096 d_data->labelMap.insert(180.0, QString::fromLatin1(<span class="stringliteral">"S"</span>));<a name="l00097"></a>00097 d_data->labelMap.insert(225.0, QString::fromLatin1(<span class="stringliteral">"SW"</span>));<a name="l00098"></a>00098 d_data->labelMap.insert(270.0, QString::fromLatin1(<span class="stringliteral">"W"</span>));<a name="l00099"></a>00099 d_data->labelMap.insert(315.0, QString::fromLatin1(<span class="stringliteral">"NW"</span>));<a name="l00100"></a>00100 <a name="l00101"></a>00101 <span class="preprocessor">#if 0</span><a name="l00102"></a>00102 <span class="preprocessor"></span> d_data->labelMap.insert(22.5, QString::fromLatin1(<span class="stringliteral">"NNE"</span>));<a name="l00103"></a>00103 d_data->labelMap.insert(67.5, QString::fromLatin1(<span class="stringliteral">"NEE"</span>));<a name="l00104"></a>00104 d_data->labelMap.insert(112.5, QString::fromLatin1(<span class="stringliteral">"SEE"</span>));<a name="l00105"></a>00105 d_data->labelMap.insert(157.5, QString::fromLatin1(<span class="stringliteral">"SSE"</span>));<a name="l00106"></a>00106 d_data->labelMap.insert(202.5, QString::fromLatin1(<span class="stringliteral">"SSW"</span>));<a name="l00107"></a>00107 d_data->labelMap.insert(247.5, QString::fromLatin1(<span class="stringliteral">"SWW"</span>));<a name="l00108"></a>00108 d_data->labelMap.insert(292.5, QString::fromLatin1(<span class="stringliteral">"NWW"</span>));<a name="l00109"></a>00109 d_data->labelMap.insert(337.5, QString::fromLatin1(<span class="stringliteral">"NNW"</span>));<a name="l00110"></a>00110 <span class="preprocessor">#endif</span><a name="l00111"></a>00111 <span class="preprocessor"></span>}<a name="l00112"></a>00112 <a name="l00114"></a><a class="code" href="class_qwt_compass.html#375701893fa3c0aeadaf23dd316fe69f">00114</a> <span class="keywordtype">void</span> <a class="code" href="class_qwt_compass.html#375701893fa3c0aeadaf23dd316fe69f">QwtCompass::drawScaleContents</a>(QPainter *painter, <a name="l00115"></a>00115 <span class="keyword">const</span> QPoint &center, <span class="keywordtype">int</span> radius)<span class="keyword"> const</span><a name="l00116"></a>00116 <span class="keyword"></span>{<a name="l00117"></a>00117 QPalette::ColorGroup cg;<a name="l00118"></a>00118 <span class="keywordflow">if</span> ( isEnabled() )<a name="l00119"></a>00119 cg = hasFocus() ? QPalette::Active : QPalette::Inactive;<a name="l00120"></a>00120 <span class="keywordflow">else</span><a name="l00121"></a>00121 cg = QPalette::Disabled;<a name="l00122"></a>00122 <a name="l00123"></a>00123 <span class="keywordtype">double</span> north = <a class="code" href="class_qwt_dial.html#5d7a8b9094bcc3fb82b31c3ac9ad706d">origin</a>();<a name="l00124"></a>00124 <span class="keywordflow">if</span> ( <a class="code" href="class_qwt_abstract_slider.html#87c750f098cb5f70306a7908339cb88e">isValid</a>() )<a name="l00125"></a>00125 {<a name="l00126"></a>00126 <span class="keywordflow">if</span> ( <a class="code" href="class_qwt_dial.html#fd95a47735c0cfe963dfacd1a6a36a6f">mode</a>() == RotateScale )<a name="l00127"></a>00127 north -= <a class="code" href="class_qwt_double_range.html#7777cf257c812579c4891512f1b6cad0">value</a>(); <a name="l00128"></a>00128 }<a name="l00129"></a>00129 <a name="l00130"></a>00130 <span class="keyword">const</span> <span class="keywordtype">int</span> margin = 4;<a name="l00131"></a>00131 <a class="code" href="class_qwt_compass.html#f97ae99ae987472ee89deff90c1bf6d4">drawRose</a>(painter, center, radius - margin, 360.0 - north, cg);⌨️ 快捷键说明
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