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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_double_rect.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_double_rect.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 <qglobal.h></span><a name="l00011"></a>00011 <a name="l00012"></a>00012 <span class="preprocessor">#if QT_VERSION < 0x040000</span><a name="l00013"></a>00013 <span class="preprocessor"></span><a name="l00014"></a>00014 <span class="preprocessor">#include "qwt_math.h"</span><a name="l00015"></a>00015 <span class="preprocessor">#include "qwt_double_rect.h"</span><a name="l00016"></a>00016 <a name="l00022"></a>00022 QwtDoublePoint::QwtDoublePoint():<a name="l00023"></a>00023 d_x(0.0),<a name="l00024"></a>00024 d_y(0.0)<a name="l00025"></a>00025 {<a name="l00026"></a>00026 }<a name="l00027"></a>00027 <a name="l00029"></a>00029 QwtDoublePoint::QwtDoublePoint(<span class="keywordtype">double</span> x, <span class="keywordtype">double</span> y ):<a name="l00030"></a>00030 d_x(x),<a name="l00031"></a>00031 d_y(y)<a name="l00032"></a>00032 {<a name="l00033"></a>00033 }<a name="l00034"></a>00034 <a name="l00040"></a>00040 QwtDoublePoint::QwtDoublePoint(<span class="keyword">const</span> QPoint &p):<a name="l00041"></a>00041 d_x(double(p.x())),<a name="l00042"></a>00042 d_y(double(p.y()))<a name="l00043"></a>00043 {<a name="l00044"></a>00044 }<a name="l00045"></a>00045 <a name="l00052"></a>00052 <span class="keywordtype">bool</span> QwtDoublePoint::operator==(<span class="keyword">const</span> QwtDoublePoint &other)<span class="keyword"> const</span><a name="l00053"></a>00053 <span class="keyword"></span>{<a name="l00054"></a>00054 <span class="keywordflow">return</span> (d_x == other.d_x) && (d_y == other.d_y);<a name="l00055"></a>00055 }<a name="l00056"></a>00056 <a name="l00058"></a>00058 <span class="keywordtype">bool</span> QwtDoublePoint::operator!=(<span class="keyword">const</span> QwtDoublePoint &other)<span class="keyword"> const</span><a name="l00059"></a>00059 <span class="keyword"></span>{<a name="l00060"></a>00060 <span class="keywordflow">return</span> !operator==(other);<a name="l00061"></a>00061 }<a name="l00062"></a>00062 <a name="l00067"></a>00067 <span class="keyword">const</span> QwtDoublePoint QwtDoublePoint::operator-()<span class="keyword"> const</span><a name="l00068"></a>00068 <span class="keyword"></span>{<a name="l00069"></a>00069 <span class="keywordflow">return</span> QwtDoublePoint(-d_x, -d_y);<a name="l00070"></a>00070 }<a name="l00071"></a>00071 <a name="l00077"></a>00077 <span class="keyword">const</span> QwtDoublePoint QwtDoublePoint::operator+(<a name="l00078"></a>00078 <span class="keyword">const</span> QwtDoublePoint &other)<span class="keyword"> const</span><a name="l00079"></a>00079 <span class="keyword"></span>{<a name="l00080"></a>00080 <span class="keywordflow">return</span> QwtDoublePoint(d_x + other.d_x, d_y + other.d_y);<a name="l00081"></a>00081 }<a name="l00082"></a>00082 <a name="l00088"></a>00088 <span class="keyword">const</span> QwtDoublePoint QwtDoublePoint::operator-(<a name="l00089"></a>00089 <span class="keyword">const</span> QwtDoublePoint &other)<span class="keyword"> const</span><a name="l00090"></a>00090 <span class="keyword"></span>{<a name="l00091"></a>00091 <span class="keywordflow">return</span> QwtDoublePoint(d_x - other.d_x, d_y - other.d_y);<a name="l00092"></a>00092 }<a name="l00093"></a>00093 <a name="l00099"></a>00099 <span class="keyword">const</span> QwtDoublePoint QwtDoublePoint::operator*(<span class="keywordtype">double</span> factor)<span class="keyword"> const</span><a name="l00100"></a>00100 <span class="keyword"></span>{<a name="l00101"></a>00101 <span class="keywordflow">return</span> QwtDoublePoint(d_x * factor, d_y * factor);<a name="l00102"></a>00102 }<a name="l00103"></a>00103 <a name="l00109"></a>00109 <span class="keyword">const</span> QwtDoublePoint QwtDoublePoint::operator/(<span class="keywordtype">double</span> factor)<span class="keyword"> const</span><a name="l00110"></a>00110 <span class="keyword"></span>{<a name="l00111"></a>00111 <span class="keywordflow">return</span> QwtDoublePoint(d_x / factor, d_y / factor);<a name="l00112"></a>00112 }<a name="l00113"></a>00113 <a name="l00119"></a>00119 QwtDoublePoint &QwtDoublePoint::operator+=(<span class="keyword">const</span> QwtDoublePoint &other)<a name="l00120"></a>00120 {<a name="l00121"></a>00121 d_x += other.d_x;<a name="l00122"></a>00122 d_y += other.d_y;<a name="l00123"></a>00123 <span class="keywordflow">return</span> *<span class="keyword">this</span>;<a name="l00124"></a>00124 }<a name="l00125"></a>00125 <a name="l00131"></a>00131 QwtDoublePoint &QwtDoublePoint::operator-=(<span class="keyword">const</span> QwtDoublePoint &other)<a name="l00132"></a>00132 {<a name="l00133"></a>00133 d_x -= other.d_x;<a name="l00134"></a>00134 d_y -= other.d_y;<a name="l00135"></a>00135 <span class="keywordflow">return</span> *<span class="keyword">this</span>;<a name="l00136"></a>00136 }<a name="l00137"></a>00137 <a name="l00143"></a>00143 QwtDoublePoint &QwtDoublePoint::operator*=(<span class="keywordtype">double</span> factor)<a name="l00144"></a>00144 {<a name="l00145"></a>00145 d_x *= factor;<a name="l00146"></a>00146 d_y *= factor;<a name="l00147"></a>00147 <span class="keywordflow">return</span> *<span class="keyword">this</span>;<a name="l00148"></a>00148 }<a name="l00149"></a>00149 <a name="l00155"></a>00155 QwtDoublePoint &QwtDoublePoint::operator/=(<span class="keywordtype">double</span> factor)<a name="l00156"></a>00156 {<a name="l00157"></a>00157 d_x /= factor;<a name="l00158"></a>00158 d_y /= factor;<a name="l00159"></a>00159 <span class="keywordflow">return</span> *<span class="keyword">this</span>;<a name="l00160"></a>00160 }<a name="l00161"></a>00161 <a name="l00163"></a>00163 QwtDoubleSize::QwtDoubleSize():<a name="l00164"></a>00164 d_width(-1.0),<a name="l00165"></a>00165 d_height(-1.0)<a name="l00166"></a>00166 { <a name="l00167"></a>00167 } <a name="l00168"></a>00168 <a name="l00170"></a>00170 QwtDoubleSize::QwtDoubleSize( <span class="keywordtype">double</span> width, <span class="keywordtype">double</span> height ):<a name="l00171"></a>00171 d_width(width),<a name="l00172"></a>00172 d_height(height)<a name="l00173"></a>00173 { <a name="l00174"></a>00174 } <a name="l00175"></a>00175 <a name="l00177"></a>00177 QwtDoubleSize::QwtDoubleSize(<span class="keyword">const</span> QSize &sz):<a name="l00178"></a>00178 d_width(double(sz.width())),<a name="l00179"></a>00179 d_height(double(sz.height()))<a name="l00180"></a>00180 { <a name="l00181"></a>00181 } <a name="l00182"></a>00182 <a name="l00184"></a>00184 <span class="keywordtype">void</span> QwtDoubleSize::transpose()<a name="l00185"></a>00185 { <a name="l00186"></a>00186 <span class="keywordtype">double</span> tmp = d_width;<a name="l00187"></a>00187 d_width = d_height;<a name="l00188"></a>00188 d_height = tmp;<a name="l00189"></a>00189 }<a name="l00190"></a>00190 <a name="l00195"></a>00195 QwtDoubleSize QwtDoubleSize::expandedTo(<a name="l00196"></a>00196 <span class="keyword">const</span> QwtDoubleSize &other)<span class="keyword"> const</span><a name="l00197"></a>00197 <span class="keyword"></span>{ <a name="l00198"></a>00198 <span class="keywordflow">return</span> QwtDoubleSize(<a name="l00199"></a>00199 qwtMax(d_width, other.d_width),<a name="l00200"></a>00200 qwtMax(d_height, other.d_height)<a name="l00201"></a>00201 ); <a name="l00202"></a>00202 } <a name="l00203"></a>00203 <a name="l00207"></a>00207 QwtDoubleSize QwtDoubleSize::boundedTo(<a name="l00208"></a>00208 <span class="keyword">const</span> QwtDoubleSize &other)<span class="keyword"> const</span><a name="l00209"></a>00209 <span class="keyword"></span>{ <a name="l00210"></a>00210 <span class="keywordflow">return</span> QwtDoubleSize(<a name="l00211"></a>00211 qwtMin(d_width, other.d_width),<a name="l00212"></a>00212 qwtMin(d_height, other.d_height)<a name="l00213"></a>00213 ); <a name="l00214"></a>00214 } <a name="l00215"></a>00215 <a name="l00217"></a>00217 <span class="keywordtype">bool</span> QwtDoubleSize::operator==(<span class="keyword">const</span> QwtDoubleSize &other)<span class="keyword"> const</span><a name="l00218"></a>00218 <span class="keyword"></span>{ <a name="l00219"></a>00219 <span class="keywordflow">return</span> d_width == other.d_width && d_height == other.d_height;<a name="l00220"></a>00220 } <a name="l00221"></a>00221 <a name="l00223"></a>00223 <span class="keywordtype">bool</span> QwtDoubleSize::operator!=(<span class="keyword">const</span> QwtDoubleSize &other)<span class="keyword"> const</span><a name="l00224"></a>00224 <span class="keyword"></span>{ <a name="l00225"></a>00225 <span class="keywordflow">return</span> !operator==(other);<a name="l00226"></a>00226 } <a name="l00227"></a>00227 <a name="l00232"></a>00232 <span class="keyword">const</span> QwtDoubleSize QwtDoubleSize::operator+(<a name="l00233"></a>00233 <span class="keyword">const</span> QwtDoubleSize &other)<span class="keyword"> const</span><a name="l00234"></a>00234 <span class="keyword"></span>{ <a name="l00235"></a>00235 <span class="keywordflow">return</span> QwtDoubleSize(d_width + other.d_width,<a name="l00236"></a>00236 d_height + other.d_height); <a name="l00237"></a>00237 } <a name="l00238"></a>00238 <a name="l00243"></a>00243 <span class="keyword">const</span> QwtDoubleSize QwtDoubleSize::operator-(<a name="l00244"></a>00244 <span class="keyword">const</span> QwtDoubleSize &other)<span class="keyword"> const</span><a name="l00245"></a>00245 <span class="keyword"></span>{ <a name="l00246"></a>00246 <span class="keywordflow">return</span> QwtDoubleSize(d_width - other.d_width,<a name="l00247"></a>00247 d_height - other.d_height); <a name="l00248"></a>00248 } <a name="l00249"></a>00249 <a name="l00251"></a>00251 <span class="keyword">const</span> QwtDoubleSize QwtDoubleSize::operator*(<span class="keywordtype">double</span> c)<span class="keyword"> const</span><a name="l00252"></a>00252 <span class="keyword"></span>{ <a name="l00253"></a>00253 <span class="keywordflow">return</span> QwtDoubleSize(d_width * c, d_height * c);<a name="l00254"></a>00254 } <a name="l00255"></a>00255 <a name="l00257"></a>00257 <span class="keyword">const</span> QwtDoubleSize QwtDoubleSize::operator/(<span class="keywordtype">double</span> c)<span class="keyword"> const</span><a name="l00258"></a>00258 <span class="keyword"></span>{ <a name="l00259"></a>00259 <span class="keywordflow">return</span> QwtDoubleSize(d_width / c, d_height / c);<a name="l00260"></a>00260 } <a name="l00261"></a>00261 <a name="l00263"></a>00263 QwtDoubleSize &QwtDoubleSize::operator+=(<span class="keyword">const</span> QwtDoubleSize &other)<a name="l00264"></a>00264 { <a name="l00265"></a>00265 d_width += other.d_width; <a name="l00266"></a>00266 d_height += other.d_height;<a name="l00267"></a>00267 <span class="keywordflow">return</span> *<span class="keyword">this</span>;<a name="l00268"></a>00268 }<a name="l00269"></a>00269 <a name="l00271"></a>00271 QwtDoubleSize &QwtDoubleSize::operator-=(<span class="keyword">const</span> QwtDoubleSize &other)<a name="l00272"></a>00272 { <a name="l00273"></a>00273 d_width -= other.d_width; <a name="l00274"></a>00274 d_height -= other.d_height;<a name="l00275"></a>00275 <span class="keywordflow">return</span> *<span class="keyword">this</span>;<a name="l00276"></a>00276 }<a name="l00277"></a>00277 <a name="l00278"></a>00278 <span class="comment">/* </span><a name="l00279"></a>00279 <span class="comment"> Multiplies this size's width and height by c, </span><a name="l00280"></a>00280 <span class="comment"> and returns a reference to this size.</span><a name="l00281"></a>00281 <span class="comment">*/</span><a name="l00282"></a>00282 QwtDoubleSize &QwtDoubleSize::operator*=(<span class="keywordtype">double</span> c)<a name="l00283"></a>00283 { <a name="l00284"></a>00284 d_width *= c; <a name="l00285"></a>00285 d_height *= c;<a name="l00286"></a>00286 <span class="keywordflow">return</span> *<span class="keyword">this</span>;<a name="l00287"></a>00287 }<a name="l00288"></a>00288 <a name="l00289"></a>00289 <span class="comment">/* </span><a name="l00290"></a>00290 <span class="comment"> Devides this size's width and height by c, </span><a name="l00291"></a>00291 <span class="comment"> and returns a reference to this size.</span><a name="l00292"></a>00292 <span class="comment">*/</span><a name="l00293"></a>00293 QwtDoubleSize &QwtDoubleSize::operator/=(<span class="keywordtype">double</span> c)<a name="l00294"></a>00294 {<a name="l00295"></a>00295 d_width /= c;<a name="l00296"></a>00296 d_height /= c;<a name="l00297"></a>00297 <span class="keywordflow">return</span> *<span class="keyword">this</span>;⌨️ 快捷键说明
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