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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_symbol.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_symbol.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 <qpainter.h></span><a name="l00011"></a>00011 <span class="preprocessor">#include <qapplication.h></span><a name="l00012"></a>00012 <span class="preprocessor">#include "qwt_painter.h"</span><a name="l00013"></a>00013 <span class="preprocessor">#include "qwt_polygon.h"</span><a name="l00014"></a>00014 <span class="preprocessor">#include "qwt_symbol.h"</span><a name="l00015"></a>00015 <a name="l00022"></a><a class="code" href="class_qwt_symbol.html#f57237cb9c77fe480c0512abc2afde2e">00022</a> <a class="code" href="class_qwt_symbol.html#f57237cb9c77fe480c0512abc2afde2e">QwtSymbol::QwtSymbol</a>(): <a name="l00023"></a>00023 d_brush(Qt::gray), <a name="l00024"></a>00024 d_pen(Qt::black), <a name="l00025"></a>00025 d_size(0,0),<a name="l00026"></a>00026 d_style(<a class="code" href="class_qwt_symbol.html">QwtSymbol</a>::NoSymbol)<a name="l00027"></a>00027 {<a name="l00028"></a>00028 }<a name="l00029"></a>00029 <a name="l00037"></a><a class="code" href="class_qwt_symbol.html#8f1c507aa09dca81dcd564ef341c1a46">00037</a> <a class="code" href="class_qwt_symbol.html#f57237cb9c77fe480c0512abc2afde2e">QwtSymbol::QwtSymbol</a>(<a class="code" href="class_qwt_symbol.html#62f457952470c2076962e83ef2c24d2f">QwtSymbol::Style</a> style, <span class="keyword">const</span> QBrush &brush, <a name="l00038"></a>00038 <span class="keyword">const</span> QPen &pen, <span class="keyword">const</span> QSize &size): <a name="l00039"></a>00039 d_brush(brush), <a name="l00040"></a>00040 d_pen(pen), <a name="l00041"></a>00041 d_size(size),<a name="l00042"></a>00042 d_style(style)<a name="l00043"></a>00043 {<a name="l00044"></a>00044 }<a name="l00045"></a>00045 <a name="l00047"></a><a class="code" href="class_qwt_symbol.html#5a30269273545d5ed25f7116a421eda2">00047</a> <a class="code" href="class_qwt_symbol.html#5a30269273545d5ed25f7116a421eda2">QwtSymbol::~QwtSymbol</a>()<a name="l00048"></a>00048 {<a name="l00049"></a>00049 }<a name="l00050"></a>00050 <a name="l00060"></a><a class="code" href="class_qwt_symbol.html#041c86efd8763564b07332c1bdb4efb7">00060</a> <span class="keywordtype">void</span> <a class="code" href="class_qwt_symbol.html#348247dfc2bf79de957b7eb84a32a720">QwtSymbol::setSize</a>(<span class="keywordtype">int</span> w, <span class="keywordtype">int</span> h)<a name="l00061"></a>00061 {<a name="l00062"></a>00062 <span class="keywordflow">if</span> ((w >= 0) && (h < 0)) <a name="l00063"></a>00063 h = w;<a name="l00064"></a>00064 d_size = QSize(w,h);<a name="l00065"></a>00065 }<a name="l00066"></a>00066 <a name="l00068"></a><a class="code" href="class_qwt_symbol.html#348247dfc2bf79de957b7eb84a32a720">00068</a> <span class="keywordtype">void</span> <a class="code" href="class_qwt_symbol.html#348247dfc2bf79de957b7eb84a32a720">QwtSymbol::setSize</a>(<span class="keyword">const</span> QSize &s)<a name="l00069"></a>00069 {<a name="l00070"></a>00070 <span class="keywordflow">if</span> (s.isValid()) <a name="l00071"></a>00071 d_size = s;<a name="l00072"></a>00072 }<a name="l00073"></a>00073 <a name="l00080"></a><a class="code" href="class_qwt_symbol.html#e6aa7281d518bdd4adae8a37bbb5e09a">00080</a> <span class="keywordtype">void</span> <a class="code" href="class_qwt_symbol.html#e6aa7281d518bdd4adae8a37bbb5e09a">QwtSymbol::setBrush</a>(<span class="keyword">const</span> QBrush &br)<a name="l00081"></a>00081 {<a name="l00082"></a>00082 d_brush = br;<a name="l00083"></a>00083 }<a name="l00084"></a>00084 <a name="l00092"></a><a class="code" href="class_qwt_symbol.html#2da17316935164c5f0682ce7e6c55827">00092</a> <span class="keywordtype">void</span> <a class="code" href="class_qwt_symbol.html#2da17316935164c5f0682ce7e6c55827">QwtSymbol::setPen</a>(<span class="keyword">const</span> QPen &pn)<a name="l00093"></a>00093 {<a name="l00094"></a>00094 d_pen = pn;<a name="l00095"></a>00095 }<a name="l00096"></a>00096 <a name="l00100"></a><a class="code" href="class_qwt_symbol.html#bae9c8376a66fcae5324a7994e6965e2">00100</a> <span class="keywordtype">void</span> <a class="code" href="class_qwt_symbol.html#5a88bcd704acadbda4ae9dea82b22c57">QwtSymbol::draw</a>(QPainter *painter, <span class="keywordtype">int</span> x, <span class="keywordtype">int</span> y)<span class="keyword"> const</span><a name="l00101"></a>00101 <span class="keyword"></span>{<a name="l00102"></a>00102 <a class="code" href="class_qwt_symbol.html#5a88bcd704acadbda4ae9dea82b22c57">draw</a>(painter, QPoint(x, y));<a name="l00103"></a>00103 }<a name="l00104"></a>00104 <a name="l00105"></a>00105 <a name="l00116"></a><a class="code" href="class_qwt_symbol.html#9b5aee0c909b2d06dae309d08a3b110f">00116</a> <span class="keywordtype">void</span> <a class="code" href="class_qwt_symbol.html#5a88bcd704acadbda4ae9dea82b22c57">QwtSymbol::draw</a>(QPainter *painter, <span class="keyword">const</span> QRect& r)<span class="keyword"> const</span><a name="l00117"></a>00117 <span class="keyword"></span>{<a name="l00118"></a>00118 <span class="keywordflow">switch</span>(d_style)<a name="l00119"></a>00119 {<a name="l00120"></a>00120 <span class="keywordflow">case</span> QwtSymbol::Ellipse:<a name="l00121"></a>00121 <a class="code" href="class_qwt_painter.html#d04cda859203b745e662d1e2f74adc59">QwtPainter::drawEllipse</a>(painter, r);<a name="l00122"></a>00122 <span class="keywordflow">break</span>;<a name="l00123"></a>00123 <span class="keywordflow">case</span> QwtSymbol::Rect:<a name="l00124"></a>00124 <a class="code" href="class_qwt_painter.html#9d606b6a681b9e1d0e0823c8a169ac7e">QwtPainter::drawRect</a>(painter, r);<a name="l00125"></a>00125 <span class="keywordflow">break</span>;<a name="l00126"></a>00126 <span class="keywordflow">case</span> QwtSymbol::Diamond:<a name="l00127"></a>00127 {<a name="l00128"></a>00128 <span class="keyword">const</span> <span class="keywordtype">int</span> w2 = r.width() / 2;<a name="l00129"></a>00129 <span class="keyword">const</span> <span class="keywordtype">int</span> h2 = r.height() / 2;<a name="l00130"></a>00130 <a name="l00131"></a>00131 QwtPolygon pa(4);<a name="l00132"></a>00132 pa.setPoint(0, r.x() + w2, r.y());<a name="l00133"></a>00133 pa.setPoint(1, r.right(), r.y() + h2);<a name="l00134"></a>00134 pa.setPoint(2, r.x() + w2, r.bottom());<a name="l00135"></a>00135 pa.setPoint(3, r.x(), r.y() + h2);<a name="l00136"></a>00136 <a class="code" href="class_qwt_painter.html#ea6a68bdfab18525b39f18413fc41950">QwtPainter::drawPolygon</a>(painter, pa);<a name="l00137"></a>00137 <span class="keywordflow">break</span>;<a name="l00138"></a>00138 }⌨️ 快捷键说明
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