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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
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<h1>qwt_compass.cpp</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="comment">// vim: expandtab</span>
00011
00012 <span class="preprocessor">#include <math.h></span>
00013 <span class="preprocessor">#include <qpainter.h></span>
00014 <span class="preprocessor">#include <qpixmap.h></span>
00015 <span class="preprocessor">#include <qevent.h></span>
00016 <span class="preprocessor">#include "<a class="code" href="qwt__math_8h.html">qwt_math.h</a>"</span>
00017 <span class="preprocessor">#include "qwt_scldraw.h"</span>
00018 <span class="preprocessor">#include "qwt_paint_buffer.h"</span>
00019 <span class="preprocessor">#include "qwt_painter.h"</span>
00020 <span class="preprocessor">#include "qwt_dial_needle.h"</span>
00021 <span class="preprocessor">#include "qwt_compass_rose.h"</span>
00022 <span class="preprocessor">#include "qwt_compass.h"</span>
00023
<a name="l00034"></a><a class="code" href="class_qwt_compass.html#a0">00034</a> <a class="code" href="class_qwt_compass.html#a0">QwtCompass::QwtCompass</a>(QWidget* parent, <span class="keyword">const</span> <span class="keywordtype">char</span>* name):
00035 <a class="code" href="class_qwt_dial.html">QwtDial</a>(parent, name),
00036 d_rose(0)
00037 {
00038 <a class="code" href="class_qwt_dial.html#a14">setScaleOptions</a>(ScaleLabel); <span class="comment">// Only labels, no backbone, no ticks</span>
00039
00040 <a class="code" href="class_qwt_dial.html#a18">setOrigin</a>(270.0);
00041 <a class="code" href="class_qwt_dial.html#a10">setWrapping</a>(TRUE);
00042
00043
00044 d_labelMap.insert(0.0, QString::fromLatin1(<span class="stringliteral">"N"</span>));
00045 d_labelMap.insert(45.0, QString::fromLatin1(<span class="stringliteral">"NE"</span>));
00046 d_labelMap.insert(90.0, QString::fromLatin1(<span class="stringliteral">"E"</span>));
00047 d_labelMap.insert(135.0, QString::fromLatin1(<span class="stringliteral">"SE"</span>));
00048 d_labelMap.insert(180.0, QString::fromLatin1(<span class="stringliteral">"S"</span>));
00049 d_labelMap.insert(225.0, QString::fromLatin1(<span class="stringliteral">"SW"</span>));
00050 d_labelMap.insert(270.0, QString::fromLatin1(<span class="stringliteral">"W"</span>));
00051 d_labelMap.insert(315.0, QString::fromLatin1(<span class="stringliteral">"NW"</span>));
00052
00053 <span class="preprocessor">#if 0</span>
00054 <span class="preprocessor"></span> d_labelMap.insert(22.5, QString::fromLatin1(<span class="stringliteral">"NNE"</span>));
00055 d_labelMap.insert(67.5, QString::fromLatin1(<span class="stringliteral">"NEE"</span>));
00056 d_labelMap.insert(112.5, QString::fromLatin1(<span class="stringliteral">"SEE"</span>));
00057 d_labelMap.insert(157.5, QString::fromLatin1(<span class="stringliteral">"SSE"</span>));
00058 d_labelMap.insert(202.5, QString::fromLatin1(<span class="stringliteral">"SSW"</span>));
00059 d_labelMap.insert(247.5, QString::fromLatin1(<span class="stringliteral">"SWW"</span>));
00060 d_labelMap.insert(292.5, QString::fromLatin1(<span class="stringliteral">"NWW"</span>));
00061 d_labelMap.insert(337.5, QString::fromLatin1(<span class="stringliteral">"NNW"</span>));
00062 <span class="preprocessor">#endif</span>
00063 <span class="preprocessor"></span>}
00064
<a name="l00066"></a><a class="code" href="class_qwt_compass.html#a1">00066</a> <a class="code" href="class_qwt_compass.html#a1">QwtCompass::~QwtCompass</a>()
00067 {
00068 <span class="keyword">delete</span> d_rose;
00069 }
00070
<a name="l00072"></a><a class="code" href="class_qwt_compass.html#b2">00072</a> <span class="keywordtype">void</span> <a class="code" href="class_qwt_compass.html#b2">QwtCompass::drawScaleContents</a>(QPainter *painter,
00073 <span class="keyword">const</span> QPoint &center, <span class="keywordtype">int</span> radius)<span class="keyword"> const</span>
00074 <span class="keyword"></span>{
00075 QPalette::ColorGroup cg;
00076 <span class="keywordflow">if</span> ( isEnabled() )
00077 cg = hasFocus() ? QPalette::Active : QPalette::Inactive;
00078 <span class="keywordflow">else</span>
00079 cg = QPalette::Disabled;
00080
00081 <span class="keywordtype">double</span> north = <a class="code" href="class_qwt_dial.html#a19">origin</a>();
00082 <span class="keywordflow">if</span> ( <a class="code" href="class_qwt_slider_base.html#a10">isValid</a>() )
00083 {
00084 <span class="keywordflow">if</span> ( <a class="code" href="class_qwt_dial.html#a9">mode</a>() == RotateScale )
00085 north -= <a class="code" href="class_qwt_dbl_range.html#a6">value</a>();
00086 }
00087
00088 <span class="keyword">const</span> <span class="keywordtype">int</span> margin = 4;
00089 <a class="code" href="class_qwt_compass.html#b1">drawRose</a>(painter, center, radius - margin, 360.0 - north, cg);
00090 }
00091
<a name="l00101"></a><a class="code" href="class_qwt_compass.html#b1">00101</a> <span class="keywordtype">void</span> <a class="code" href="class_qwt_compass.html#b1">QwtCompass::drawRose</a>(QPainter *painter, <span class="keyword">const</span> QPoint &center,
00102 <span class="keywordtype">int</span> radius, <span class="keywordtype">double</span> north, QPalette::ColorGroup cg)<span class="keyword"> const</span>
00103 <span class="keyword"></span>{
00104 <span class="keywordflow">if</span> ( d_rose )
00105 d_rose->draw(painter, center, radius, north, cg);
00106 }
00107
<a name="l00115"></a><a class="code" href="class_qwt_compass.html#a2">00115</a> <span class="keywordtype">void</span> <a class="code" href="class_qwt_compass.html#a2">QwtCompass::setRose</a>(QwtCompassRose *rose)
00116 {
00117 <span class="keywordflow">if</span> ( rose != d_rose )
00118 {
00119 <span class="keywordflow">if</span> ( d_rose )
00120 <span class="keyword">delete</span> d_rose;
00121
00122 d_rose = rose;
00123 update();
00124 }
00125 }
00126
<a name="l00131"></a><a class="code" href="class_qwt_compass.html#a3">00131</a> <span class="keyword">const</span> QwtCompassRose *<a class="code" href="class_qwt_compass.html#a3">QwtCompass::rose</a>()<span class="keyword"> const </span>
00132 <span class="keyword"></span>{
00133 <span class="keywordflow">return</span> d_rose;
00134 }
00135
<a name="l00140"></a><a class="code" href="class_qwt_compass.html#a4">00140</a> QwtCompassRose *<a class="code" href="class_qwt_compass.html#a3">QwtCompass::rose</a>()
00141 {
00142 <span class="keywordflow">return</span> d_rose;
00143 }
00144
<a name="l00154"></a><a class="code" href="class_qwt_compass.html#b3">00154</a> <span class="keywordtype">void</span> <a class="code" href="class_qwt_compass.html#b3">QwtCompass::keyPressEvent</a>(QKeyEvent *kev)
00155 {
00156 <span class="keywordflow">if</span> (<a class="code" href="class_qwt_slider_base.html#a9">isReadOnly</a>())
00157 <span class="keywordflow">return</span>;
00158
00159 <span class="preprocessor">#if 0</span>
00160 <span class="preprocessor"></span> <span class="keywordflow">if</span> ( kev->key() == Key_5 )
00161 {
00162 invalidate(); <span class="comment">// signal ???</span>
00163 <span class="keywordflow">return</span>;
00164 }
00165 <span class="preprocessor">#endif</span>
00166 <span class="preprocessor"></span>
00167 <span class="keywordtype">double</span> newValue = <a class="code" href="class_qwt_dbl_range.html#a6">value</a>();
00168
00169 <span class="keywordflow">if</span> ( kev->key() >= Qt::Key_1 && kev->key() <= Qt::Key_9 )
00170 {
00171 <span class="keywordflow">if</span> ( <a class="code" href="class_qwt_dial.html#a9">mode</a>() != RotateNeedle || kev->key() == Qt::Key_5 )
00172 <span class="keywordflow">return</span>;
00173
00174 <span class="keywordflow">switch</span> (kev->key())
00175 {
00176 <span class="keywordflow">case</span> Qt::Key_6:
00177 newValue = 180.0 * 0.0;
00178 <span class="keywordflow">break</span>;
00179 <span class="keywordflow">case</span> Qt::Key_3:
00180 newValue = 180.0 * 0.25;
00181 <span class="keywordflow">break</span>;
00182 <span class="keywordflow">case</span> Qt::Key_2:
00183 newValue = 180.0 * 0.5;
00184 <span class="keywordflow">break</span>;
00185 <span class="keywordflow">case</span> Qt::Key_1:
00186 newValue = 180.0 * 0.75;
00187 <span class="keywordflow">break</span>;
00188 <span class="keywordflow">case</span> Qt::Key_4:
00189 newValue = 180.0 * 1.0;
00190 <span class="keywordflow">break</span>;
00191 <span class="keywordflow">case</span> Qt::Key_7:
00192 newValue = 180.0 * 1.25;
00193 <span class="keywordflow">break</span>;
00194 <span class="keywordflow">case</span> Qt::Key_8:
00195 newValue = 180.0 * 1.5;
00196 <span class="keywordflow">break</span>;
00197 <span class="keywordflow">case</span> Qt::Key_9:
00198 newValue = 180.0 * 1.75;
00199 <span class="keywordflow">break</span>;
00200 }
00201 newValue -= <a class="code" href="class_qwt_dial.html#a19">origin</a>();
00202 <a class="code" href="class_qwt_slider_base.html#i0">setValue</a>(newValue);
00203 }
00204 <span class="keywordflow">else</span>
00205 {
00206 <a class="code" href="class_qwt_dial.html#b2">QwtDial::keyPressEvent</a>(kev);
00207 }
00208 }
00209
<a name="l00214"></a><a class="code" href="class_qwt_compass.html#a5">00214</a> <span class="keyword">const</span> QMap<double, QString> &<a class="code" href="class_qwt_compass.html#a5">QwtCompass::labelMap</a>()<span class="keyword"> const </span>
00215 <span class="keyword"></span>{
00216 <span class="keywordflow">return</span> d_labelMap;
00217 }
00218
<a name="l00223"></a><a class="code" href="class_qwt_compass.html#a6">00223</a> QMap<double, QString> &<a class="code" href="class_qwt_compass.html#a5">QwtCompass::labelMap</a>()
00224 {
00225 <span class="keywordflow">return</span> d_labelMap;
00226 }
00227
<a name="l00240"></a><a class="code" href="class_qwt_compass.html#a7">00240</a> <span class="keywordtype">void</span> <a class="code" href="class_qwt_compass.html#a7">QwtCompass::setLabelMap</a>(<span class="keyword">const</span> QMap<double, QString> &map)
00241 {
00242 d_labelMap = map;
00243 }
00244
<a name="l00255"></a><a class="code" href="class_qwt_compass.html#b0">00255</a> QString <a class="code" href="class_qwt_compass.html#b0">QwtCompass::scaleLabel</a>(<span class="keywordtype">double</span> value)<span class="keyword"> const</span>
00256 <span class="keyword"></span>{
00257 <span class="preprocessor">#if 0</span>
00258 <span class="preprocessor"></span> <span class="comment">// better solution ???</span>
00259 <span class="keywordflow">if</span> ( value == -0 )
00260 value = 0.0;
00261 <span class="preprocessor">#endif</span>
00262 <span class="preprocessor"></span>
00263 <span class="keywordflow">if</span> ( value < 0.0 )
00264 value += 360.0;
00265
00266 <span class="keywordflow">if</span> ( d_labelMap.contains(value) )
00267 <span class="keywordflow">return</span> d_labelMap[value];
00268
00269 <span class="keywordflow">return</span> QString::null;
00270 }
00271
00272 <span class="comment">// Local Variables:</span>
00273 <span class="comment">// mode: C++</span>
00274 <span class="comment">// c-file-style: "stroustrup"</span>
00275 <span class="comment">// indent-tabs-mode: nil</span>
00276 <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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<img src="doxygen.png" alt="doxygen" align="middle" border=0 ></a> 1.3.8 </small></address>
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