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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_axis.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_axis.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 "qwt_plot.h"</span><a name="l00011"></a>00011 <span class="preprocessor">#include "qwt_math.h"</span><a name="l00012"></a>00012 <span class="preprocessor">#include "qwt_scale_widget.h"</span><a name="l00013"></a>00013 <span class="preprocessor">#include "qwt_scale_div.h"</span><a name="l00014"></a>00014 <span class="preprocessor">#include "qwt_scale_engine.h"</span><a name="l00015"></a>00015 <a name="l00016"></a>00016 <span class="keyword">class </span>QwtPlot::AxisData<a name="l00017"></a>00017 {<a name="l00018"></a>00018 <span class="keyword">public</span>:<a name="l00019"></a>00019 <span class="keywordtype">bool</span> isEnabled;<a name="l00020"></a>00020 <span class="keywordtype">bool</span> doAutoScale;<a name="l00021"></a>00021 <a name="l00022"></a>00022 <span class="keywordtype">double</span> minValue;<a name="l00023"></a>00023 <span class="keywordtype">double</span> maxValue;<a name="l00024"></a>00024 <span class="keywordtype">double</span> stepSize;<a name="l00025"></a>00025 <a name="l00026"></a>00026 <span class="keywordtype">int</span> maxMajor;<a name="l00027"></a>00027 <span class="keywordtype">int</span> maxMinor;<a name="l00028"></a>00028 <a name="l00029"></a>00029 <a class="code" href="class_qwt_scale_div.html">QwtScaleDiv</a> scaleDiv;<a name="l00030"></a>00030 <a class="code" href="class_qwt_scale_engine.html">QwtScaleEngine</a> *scaleEngine;<a name="l00031"></a>00031 <a class="code" href="class_qwt_scale_widget.html">QwtScaleWidget</a> *scaleWidget;<a name="l00032"></a>00032 };<a name="l00033"></a>00033 <a name="l00035"></a>00035 <span class="keywordtype">void</span> QwtPlot::initAxesData()<a name="l00036"></a>00036 {<a name="l00037"></a>00037 <span class="keywordtype">int</span> axisId;<a name="l00038"></a>00038 <a name="l00039"></a>00039 <span class="keywordflow">for</span>( axisId = 0; axisId < axisCnt; axisId++)<a name="l00040"></a>00040 d_axisData[axisId] = <span class="keyword">new</span> AxisData;<a name="l00041"></a>00041 <a name="l00042"></a>00042 d_axisData[yLeft]->scaleWidget = <a name="l00043"></a>00043 <span class="keyword">new</span> <a class="code" href="class_qwt_scale_widget.html">QwtScaleWidget</a>(QwtScaleDraw::LeftScale, <span class="keyword">this</span>);<a name="l00044"></a>00044 d_axisData[yRight]->scaleWidget = <a name="l00045"></a>00045 <span class="keyword">new</span> <a class="code" href="class_qwt_scale_widget.html">QwtScaleWidget</a>(QwtScaleDraw::RightScale, <span class="keyword">this</span>);<a name="l00046"></a>00046 d_axisData[xTop]->scaleWidget = <a name="l00047"></a>00047 <span class="keyword">new</span> <a class="code" href="class_qwt_scale_widget.html">QwtScaleWidget</a>(QwtScaleDraw::TopScale, <span class="keyword">this</span>);<a name="l00048"></a>00048 d_axisData[xBottom]->scaleWidget = <a name="l00049"></a>00049 <span class="keyword">new</span> <a class="code" href="class_qwt_scale_widget.html">QwtScaleWidget</a>(QwtScaleDraw::BottomScale, <span class="keyword">this</span>);<a name="l00050"></a>00050 <a name="l00051"></a>00051 <a name="l00052"></a>00052 QFont fscl(fontInfo().family(), 10);<a name="l00053"></a>00053 QFont fttl(fontInfo().family(), 12, QFont::Bold);<a name="l00054"></a>00054 <a name="l00055"></a>00055 <span class="keywordflow">for</span>(axisId = 0; axisId < axisCnt; axisId++)<a name="l00056"></a>00056 {<a name="l00057"></a>00057 AxisData &d = *d_axisData[axisId];<a name="l00058"></a>00058 <a name="l00059"></a>00059 d.scaleWidget->setFont(fscl);<a name="l00060"></a>00060 d.scaleWidget->setMargin(2);<a name="l00061"></a>00061 <a name="l00062"></a>00062 <a class="code" href="class_qwt_text.html">QwtText</a> text;<a name="l00063"></a>00063 text.<a class="code" href="class_qwt_text.html#d071f3c4fae4512a1cc71554d95eb69a">setFont</a>(fttl);<a name="l00064"></a>00064 d.scaleWidget->setTitle(text);<a name="l00065"></a>00065 <a name="l00066"></a>00066 d.doAutoScale = <span class="keyword">true</span>;<a name="l00067"></a>00067 <a name="l00068"></a>00068 d.minValue = 0.0;<a name="l00069"></a>00069 d.maxValue = 1000.0;<a name="l00070"></a>00070 d.stepSize = 0.0;<a name="l00071"></a>00071 <a name="l00072"></a>00072 d.maxMinor = 5;<a name="l00073"></a>00073 d.maxMajor = 8;<a name="l00074"></a>00074 <a name="l00075"></a>00075 d.scaleEngine = <span class="keyword">new</span> <a class="code" href="class_qwt_linear_scale_engine.html">QwtLinearScaleEngine</a>;<a name="l00076"></a>00076 <a name="l00077"></a>00077 d.scaleDiv.invalidate();<a name="l00078"></a>00078 }<a name="l00079"></a>00079 <a name="l00080"></a>00080 d_axisData[yLeft]->isEnabled = <span class="keyword">true</span>;<a name="l00081"></a>00081 d_axisData[yRight]->isEnabled = <span class="keyword">false</span>;<a name="l00082"></a>00082 d_axisData[xBottom]->isEnabled = <span class="keyword">true</span>;<a name="l00083"></a>00083 d_axisData[xTop]->isEnabled = <span class="keyword">false</span>;<a name="l00084"></a>00084 }<a name="l00085"></a>00085 <a name="l00086"></a>00086 <span class="keywordtype">void</span> QwtPlot::deleteAxesData()<a name="l00087"></a>00087 {<a name="l00088"></a>00088 <span class="keywordflow">for</span>( <span class="keywordtype">int</span> axisId = 0; axisId < axisCnt; axisId++)<a name="l00089"></a>00089 {<a name="l00090"></a>00090 <span class="keyword">delete</span> d_axisData[axisId]->scaleEngine;<a name="l00091"></a>00091 <span class="keyword">delete</span> d_axisData[axisId];<a name="l00092"></a>00092 d_axisData[axisId] = NULL;<a name="l00093"></a>00093 }<a name="l00094"></a>00094 }<a name="l00095"></a>00095 <a name="l00100"></a><a class="code" href="class_qwt_plot.html#6b495d9b17962be6e098026441a1f7b8">00100</a> <span class="keyword">const</span> <a class="code" href="class_qwt_scale_widget.html">QwtScaleWidget</a> *<a class="code" href="class_qwt_plot.html#6b495d9b17962be6e098026441a1f7b8">QwtPlot::axisWidget</a>(<span class="keywordtype">int</span> axisId)<span class="keyword"> const</span><a name="l00101"></a>00101 <span class="keyword"></span>{<a name="l00102"></a>00102 <span class="keywordflow">if</span> (<a class="code" href="class_qwt_plot.html#c02c033b024a4ecbefcf1b0e93c91205">axisValid</a>(axisId))<a name="l00103"></a>00103 <span class="keywordflow">return</span> d_axisData[axisId]->scaleWidget;<a name="l00104"></a>00104 <a name="l00105"></a>00105 <span class="keywordflow">return</span> NULL;<a name="l00106"></a>00106 }<a name="l00107"></a>00107 <a name="l00112"></a><a class="code" href="class_qwt_plot.html#e3386e1d38f70864c4c019c0eb6a3d9d">00112</a> <a class="code" href="class_qwt_scale_widget.html">QwtScaleWidget</a> *<a class="code" href="class_qwt_plot.html#6b495d9b17962be6e098026441a1f7b8">QwtPlot::axisWidget</a>(<span class="keywordtype">int</span> axisId)<a name="l00113"></a>00113 {<a name="l00114"></a>00114 <span class="keywordflow">if</span> (<a class="code" href="class_qwt_plot.html#c02c033b024a4ecbefcf1b0e93c91205">axisValid</a>(axisId))<a name="l00115"></a>00115 <span class="keywordflow">return</span> d_axisData[axisId]->scaleWidget;<a name="l00116"></a>00116 <a name="l00117"></a>00117 <span class="keywordflow">return</span> NULL;<a name="l00118"></a>00118 }<a name="l00119"></a>00119 <a name="l00120"></a><a class="code" href="class_qwt_plot.html#bf09452377b53e584a5086354a134d78">00120</a> <span class="keywordtype">void</span> <a class="code" href="class_qwt_plot.html#bf09452377b53e584a5086354a134d78">QwtPlot::setAxisScaleEngine</a>(<span class="keywordtype">int</span> axisId, <a class="code" href="class_qwt_scale_engine.html">QwtScaleEngine</a> *scaleEngine)<a name="l00121"></a>00121 {<a name="l00122"></a>00122 <span class="keywordflow">if</span> (<a class="code" href="class_qwt_plot.html#c02c033b024a4ecbefcf1b0e93c91205">axisValid</a>(axisId) && scaleEngine != NULL )<a name="l00123"></a>00123 {<a name="l00124"></a>00124 AxisData &d = *d_axisData[axisId];<a name="l00125"></a>00125 <a name="l00126"></a>00126 <span class="keyword">delete</span> d.scaleEngine;<a name="l00127"></a>00127 d.scaleEngine = scaleEngine;<a name="l00128"></a>00128 <a name="l00129"></a>00129 d.scaleDiv.invalidate();<a name="l00130"></a>00130 <a name="l00131"></a>00131 <a class="code" href="class_qwt_plot.html#ea78ab565d05b69b8730a4af2a11f07e">autoRefresh</a>();<a name="l00132"></a>00132 }<a name="l00133"></a>00133 }<a name="l00134"></a>00134 <a name="l00135"></a><a class="code" href="class_qwt_plot.html#619b65bb95090ab5a528e33a5014ae4f">00135</a> <a class="code" href="class_qwt_scale_engine.html">QwtScaleEngine</a> *<a class="code" href="class_qwt_plot.html#619b65bb95090ab5a528e33a5014ae4f">QwtPlot::axisScaleEngine</a>(<span class="keywordtype">int</span> axisId)<a name="l00136"></a>00136 {<a name="l00137"></a>00137 <span class="keywordflow">if</span> (<a class="code" href="class_qwt_plot.html#c02c033b024a4ecbefcf1b0e93c91205">axisValid</a>(axisId))<a name="l00138"></a>00138 <span class="keywordflow">return</span> d_axisData[axisId]->scaleEngine;<a name="l00139"></a>00139 <span class="keywordflow">else</span><a name="l00140"></a>00140 <span class="keywordflow">return</span> NULL;<a name="l00141"></a>00141 }<a name="l00142"></a>00142 <a name="l00143"></a><a class="code" href="class_qwt_plot.html#3e29973bcd6c879056ad655de8f667d8">00143</a> <span class="keyword">const</span> <a class="code" href="class_qwt_scale_engine.html">QwtScaleEngine</a> *<a class="code" href="class_qwt_plot.html#619b65bb95090ab5a528e33a5014ae4f">QwtPlot::axisScaleEngine</a>(<span class="keywordtype">int</span> axisId)<span class="keyword"> const</span><a name="l00144"></a>00144 <span class="keyword"></span>{<a name="l00145"></a>00145 <span class="keywordflow">if</span> (<a class="code" href="class_qwt_plot.html#c02c033b024a4ecbefcf1b0e93c91205">axisValid</a>(axisId))<a name="l00146"></a>00146 <span class="keywordflow">return</span> d_axisData[axisId]->scaleEngine;<a name="l00147"></a>00147 <span class="keywordflow">else</span><a name="l00148"></a>00148 <span class="keywordflow">return</span> NULL;⌨️ 快捷键说明
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