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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_plot_spectrogram.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_plot_spectrogram.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="preprocessor">#include <qimage.h></span><a name="l00011"></a>00011 <span class="preprocessor">#include <qpen.h></span><a name="l00012"></a>00012 <span class="preprocessor">#include <qpainter.h></span><a name="l00013"></a>00013 <span class="preprocessor">#include "qwt_painter.h"</span><a name="l00014"></a>00014 <span class="preprocessor">#include "qwt_double_interval.h"</span><a name="l00015"></a>00015 <span class="preprocessor">#include "qwt_scale_map.h"</span><a name="l00016"></a>00016 <span class="preprocessor">#include "qwt_color_map.h"</span><a name="l00017"></a>00017 <span class="preprocessor">#include "qwt_plot_spectrogram.h"</span><a name="l00018"></a>00018 <a name="l00019"></a>00019 <span class="preprocessor">#if QT_VERSION < 0x040000</span><a name="l00020"></a>00020 <span class="preprocessor"></span><span class="keyword">typedef</span> QValueVector<QRgb> QwtColorTable;<a name="l00021"></a>00021 <span class="preprocessor">#else</span><a name="l00022"></a>00022 <span class="preprocessor"></span><span class="keyword">typedef</span> QVector<QRgb> QwtColorTable;<a name="l00023"></a>00023 <span class="preprocessor">#endif</span><a name="l00024"></a>00024 <span class="preprocessor"></span><a name="l00025"></a>00025 <span class="keyword">class </span>QwtPlotSpectrogramImage: <span class="keyword">public</span> QImage<a name="l00026"></a>00026 {<a name="l00027"></a>00027 <span class="comment">// This class hides some Qt3/Qt4 API differences</span><a name="l00028"></a>00028 <span class="keyword">public</span>:<a name="l00029"></a>00029 QwtPlotSpectrogramImage(<span class="keyword">const</span> QSize &size, <a class="code" href="class_qwt_color_map.html#9e5570790910fa3894887bca7dc5a670">QwtColorMap::Format</a> format):<a name="l00030"></a>00030 #if QT_VERSION < 0x040000<a name="l00031"></a>00031 QImage(size, format == <a class="code" href="class_qwt_color_map.html">QwtColorMap</a>::RGB ? 32 : 8)<a name="l00032"></a>00032 #else<a name="l00033"></a>00033 QImage(size, format == <a class="code" href="class_qwt_color_map.html">QwtColorMap</a>::RGB<a name="l00034"></a>00034 ? QImage::Format_ARGB32 : QImage::Format_Indexed8 )<a name="l00035"></a>00035 #endif<a name="l00036"></a>00036 {<a name="l00037"></a>00037 }<a name="l00038"></a>00038 <a name="l00039"></a>00039 QwtPlotSpectrogramImage(<span class="keyword">const</span> QImage &other):<a name="l00040"></a>00040 QImage(other)<a name="l00041"></a>00041 {<a name="l00042"></a>00042 }<a name="l00043"></a>00043 <a name="l00044"></a>00044 <span class="keywordtype">void</span> initColorTable(<span class="keyword">const</span> QImage& other)<a name="l00045"></a>00045 {<a name="l00046"></a>00046 <span class="preprocessor">#if QT_VERSION < 0x040000</span><a name="l00047"></a>00047 <span class="preprocessor"></span> <span class="keyword">const</span> <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> numColors = other.numColors();<a name="l00048"></a>00048 <a name="l00049"></a>00049 setNumColors(numColors);<a name="l00050"></a>00050 <span class="keywordflow">for</span> ( <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> i = 0; i < numColors; i++ )<a name="l00051"></a>00051 setColor(i, other.color(i));<a name="l00052"></a>00052 <span class="preprocessor">#else</span><a name="l00053"></a>00053 <span class="preprocessor"></span> setColorTable(other.colorTable());<a name="l00054"></a>00054 <span class="preprocessor">#endif</span><a name="l00055"></a>00055 <span class="preprocessor"></span> }<a name="l00056"></a>00056 <a name="l00057"></a>00057 <span class="preprocessor">#if QT_VERSION < 0x040000</span><a name="l00058"></a>00058 <span class="preprocessor"></span><a name="l00059"></a>00059 <span class="keywordtype">void</span> setColorTable(<span class="keyword">const</span> QwtColorTable &colorTable)<a name="l00060"></a>00060 {<a name="l00061"></a>00061 setNumColors(colorTable.size());<a name="l00062"></a>00062 <span class="keywordflow">for</span> ( <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> i = 0; i < colorTable.size(); i++ )<a name="l00063"></a>00063 setColor(i, colorTable[i]);<a name="l00064"></a>00064 }<a name="l00065"></a>00065 <a name="l00066"></a>00066 QwtColorTable colorTable()<span class="keyword"> const</span><a name="l00067"></a>00067 <span class="keyword"> </span>{<a name="l00068"></a>00068 QwtColorTable table(numColors());<a name="l00069"></a>00069 <span class="keywordflow">for</span> ( <span class="keywordtype">int</span> i = 0; i < numColors(); i++ )<a name="l00070"></a>00070 table[i] = color(i);<a name="l00071"></a>00071 <a name="l00072"></a>00072 <span class="keywordflow">return</span> table;<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="l00076"></a>00076 <a name="l00077"></a>00077 <span class="keyword">class </span>QwtPlotSpectrogram::PrivateData<a name="l00078"></a>00078 {<a name="l00079"></a>00079 <span class="keyword">public</span>:<a name="l00080"></a>00080 <span class="keyword">class </span>DummyData: <span class="keyword">public</span> <a class="code" href="class_qwt_raster_data.html">QwtRasterData</a><a name="l00081"></a>00081 {<a name="l00082"></a>00082 <span class="keyword">public</span>:<a name="l00083"></a>00083 <span class="keyword">virtual</span> <a class="code" href="class_qwt_raster_data.html">QwtRasterData</a> *copy()<span class="keyword"> const</span><a name="l00084"></a>00084 <span class="keyword"> </span>{<a name="l00085"></a>00085 <span class="keywordflow">return</span> <span class="keyword">new</span> DummyData();<a name="l00086"></a>00086 }<a name="l00087"></a>00087 <a name="l00088"></a>00088 <span class="keyword">virtual</span> <span class="keywordtype">double</span> value(<span class="keywordtype">double</span>, <span class="keywordtype">double</span>)<span class="keyword"> const</span><a name="l00089"></a>00089 <span class="keyword"> </span>{<a name="l00090"></a>00090 <span class="keywordflow">return</span> 0.0;<a name="l00091"></a>00091 }<a name="l00092"></a>00092 <a name="l00093"></a>00093 <span class="keyword">virtual</span> <a class="code" href="class_qwt_double_interval.html">QwtDoubleInterval</a> range()<span class="keyword"> const</span><a name="l00094"></a>00094 <span class="keyword"> </span>{<a name="l00095"></a>00095 <span class="keywordflow">return</span> <a class="code" href="class_qwt_double_interval.html">QwtDoubleInterval</a>(0.0, 1.0);<a name="l00096"></a>00096 }<a name="l00097"></a>00097 };<a name="l00098"></a>00098 <a name="l00099"></a>00099 PrivateData()<a name="l00100"></a>00100 {<a name="l00101"></a>00101 <a class="code" href="class_qwt_plot_spectrogram.html#459af4973da43510b27d57494770fb14">data</a> = <span class="keyword">new</span> DummyData();<a name="l00102"></a>00102 <a class="code" href="class_qwt_plot_spectrogram.html#ad8de9bc57b7e3e7366a67d55ad8e012">colorMap</a> = <span class="keyword">new</span> <a class="code" href="class_qwt_linear_color_map.html">QwtLinearColorMap</a>();<a name="l00103"></a>00103 displayMode = ImageMode;<a name="l00104"></a>00104 <a name="l00105"></a>00105 conrecAttributes = QwtRasterData::IgnoreAllVerticesOnLevel;<a name="l00106"></a>00106 conrecAttributes |= QwtRasterData::IgnoreOutOfRange;<a name="l00107"></a>00107 }<a name="l00108"></a>00108 ~PrivateData()<a name="l00109"></a>00109 {<a name="l00110"></a>00110 <span class="keyword">delete</span> <a class="code" href="class_qwt_plot_spectrogram.html#459af4973da43510b27d57494770fb14">data</a>;<a name="l00111"></a>00111 <span class="keyword">delete</span> <a class="code" href="class_qwt_plot_spectrogram.html#ad8de9bc57b7e3e7366a67d55ad8e012">colorMap</a>;<a name="l00112"></a>00112 }<a name="l00113"></a>00113 <a name="l00114"></a>00114 <a class="code" href="class_qwt_raster_data.html">QwtRasterData</a> *<a class="code" href="class_qwt_plot_spectrogram.html#459af4973da43510b27d57494770fb14">data</a>;<a name="l00115"></a>00115 <a class="code" href="class_qwt_color_map.html">QwtColorMap</a> *<a class="code" href="class_qwt_plot_spectrogram.html#ad8de9bc57b7e3e7366a67d55ad8e012">colorMap</a>;<a name="l00116"></a>00116 <span class="keywordtype">int</span> displayMode;<a name="l00117"></a>00117 <a name="l00118"></a>00118 QwtValueList <a class="code" href="class_qwt_plot_spectrogram.html#235c93eb3ca7e6d4a669330c39fdb0f1">contourLevels</a>;<a name="l00119"></a>00119 QPen <a class="code" href="class_qwt_plot_spectrogram.html#0b5964a44f4c0ed0139681c6873ada73">defaultContourPen</a>;<a name="l00120"></a>00120 <span class="keywordtype">int</span> conrecAttributes;<a name="l00121"></a>00121 };<a name="l00122"></a>00122 <a name="l00134"></a><a class="code" href="class_qwt_plot_spectrogram.html#e90c0431be329ecbefc7ed9ac77f5ed6">00134</a> <a class="code" href="class_qwt_plot_spectrogram.html#e90c0431be329ecbefc7ed9ac77f5ed6">QwtPlotSpectrogram::QwtPlotSpectrogram</a>(<span class="keyword">const</span> QString &<a class="code" href="class_qwt_plot_item.html#3859d011b670b5f89e45d1ccef9206f7">title</a>):<a name="l00135"></a>00135 <a class="code" href="class_qwt_plot_raster_item.html">QwtPlotRasterItem</a>(title)<a name="l00136"></a>00136 {<a name="l00137"></a>00137 d_data = <span class="keyword">new</span> PrivateData();<a name="l00138"></a>00138 <a name="l00139"></a>00139 <a class="code" href="class_qwt_plot_item.html#5a335be8ff488809a2cf7f4b734ad1b6">setItemAttribute</a>(QwtPlotItem::AutoScale, <span class="keyword">true</span>);<a name="l00140"></a>00140 <a class="code" href="class_qwt_plot_item.html#5a335be8ff488809a2cf7f4b734ad1b6">setItemAttribute</a>(QwtPlotItem::Legend, <span class="keyword">false</span>);<a name="l00141"></a>00141 <a name="l00142"></a>00142 <a class="code" href="class_qwt_plot_item.html#57d90e4146133b59d589c71b3a643e82">setZ</a>(8.0);<a name="l00143"></a>00143 }<a name="l00144"></a>00144 <a name="l00146"></a><a class="code" href="class_qwt_plot_spectrogram.html#e76415d290cf4a512d07a17260b7a84a">00146</a> <a class="code" href="class_qwt_plot_spectrogram.html#e76415d290cf4a512d07a17260b7a84a">QwtPlotSpectrogram::~QwtPlotSpectrogram</a>()<a name="l00147"></a>00147 {<a name="l00148"></a>00148 <span class="keyword">delete</span> d_data;<a name="l00149"></a>00149 }<a name="l00150"></a>00150 <a name="l00152"></a><a class="code" href="class_qwt_plot_spectrogram.html#01197466f530633759337bbb7b8f7504">00152</a> <span class="keywordtype">int</span> <a class="code" href="class_qwt_plot_spectrogram.html#01197466f530633759337bbb7b8f7504">QwtPlotSpectrogram::rtti</a>()<span class="keyword"> const</span><a name="l00153"></a>00153 <span class="keyword"></span>{<a name="l00154"></a>00154 <span class="keywordflow">return</span> QwtPlotItem::Rtti_PlotSpectrogram;<a name="l00155"></a>00155 }<a name="l00156"></a>00156 <a name="l00167"></a><a class="code" href="class_qwt_plot_spectrogram.html#482a82bcf1b9f2a9a75f527063b394a2">00167</a> <span class="keywordtype">void</span> <a class="code" href="class_qwt_plot_spectrogram.html#482a82bcf1b9f2a9a75f527063b394a2">QwtPlotSpectrogram::setDisplayMode</a>(<a class="code" href="class_qwt_plot_spectrogram.html#7f4904fe68b442d0f93040ea1fa1d062">DisplayMode</a> mode, <span class="keywordtype">bool</span> on)<a name="l00168"></a>00168 {<a name="l00169"></a>00169 <span class="keywordflow">if</span> ( on != <span class="keywordtype">bool</span>(mode & d_data->displayMode) )⌨️ 快捷键说明
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