qwt__plot__picker_8cpp-source.html
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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_picker.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_picker.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="comment">// vim: expandtab</span><a name="l00011"></a>00011 <a name="l00012"></a>00012 <span class="preprocessor">#include "qwt_plot.h"</span><a name="l00013"></a>00013 <span class="preprocessor">#include "qwt_double_rect.h"</span><a name="l00014"></a>00014 <span class="preprocessor">#include "qwt_scale_div.h"</span><a name="l00015"></a>00015 <span class="preprocessor">#include "qwt_painter.h"</span><a name="l00016"></a>00016 <span class="preprocessor">#include "qwt_scale_map.h"</span><a name="l00017"></a>00017 <span class="preprocessor">#include "qwt_plot_picker.h"</span><a name="l00018"></a>00018 <a name="l00032"></a><a class="code" href="class_qwt_plot_picker.html#f07dcf038557fae06afdd7ec6e974c5c">00032</a> <a class="code" href="class_qwt_plot_picker.html#f07dcf038557fae06afdd7ec6e974c5c">QwtPlotPicker::QwtPlotPicker</a>(<a class="code" href="class_qwt_plot_canvas.html">QwtPlotCanvas</a> *canvas):<a name="l00033"></a>00033 <a class="code" href="class_qwt_picker.html">QwtPicker</a>(canvas),<a name="l00034"></a>00034 d_xAxis(-1),<a name="l00035"></a>00035 d_yAxis(-1)<a name="l00036"></a>00036 {<a name="l00037"></a>00037 <span class="keywordflow">if</span> ( !<a class="code" href="class_qwt_plot_picker.html#402820e19bc6a9a33184264345703015">canvas</a> )<a name="l00038"></a>00038 <span class="keywordflow">return</span>;<a name="l00039"></a>00039 <a name="l00040"></a>00040 <span class="comment">// attach axes</span><a name="l00041"></a>00041 <a name="l00042"></a>00042 <span class="keywordtype">int</span> <a class="code" href="class_qwt_plot_picker.html#9cdd6d56e990173a00c6c81edbe8818d">xAxis</a> = QwtPlot::xBottom;<a name="l00043"></a>00043 <a name="l00044"></a>00044 <span class="keyword">const</span> <a class="code" href="class_qwt_plot.html">QwtPlot</a> *<a class="code" href="class_qwt_plot_picker.html#c5906d5fe7543f3db7808da44d8197a9">plot</a> = <a class="code" href="class_qwt_plot_picker.html#c5906d5fe7543f3db7808da44d8197a9">QwtPlotPicker::plot</a>();<a name="l00045"></a>00045 <span class="keywordflow">if</span> ( !<a class="code" href="class_qwt_plot_picker.html#c5906d5fe7543f3db7808da44d8197a9">plot</a>-><a class="code" href="class_qwt_plot.html#ac5107a1ec8836b53f084a5b1bb8cc43">axisEnabled</a>(QwtPlot::xBottom) &&<a name="l00046"></a>00046 <a class="code" href="class_qwt_plot_picker.html#c5906d5fe7543f3db7808da44d8197a9">plot</a>-><a class="code" href="class_qwt_plot.html#ac5107a1ec8836b53f084a5b1bb8cc43">axisEnabled</a>(QwtPlot::xTop) )<a name="l00047"></a>00047 {<a name="l00048"></a>00048 xAxis = QwtPlot::xTop;<a name="l00049"></a>00049 }<a name="l00050"></a>00050 <a name="l00051"></a>00051 <span class="keywordtype">int</span> yAxis = QwtPlot::yLeft;<a name="l00052"></a>00052 <span class="keywordflow">if</span> ( !plot->axisEnabled(QwtPlot::yLeft) &&<a name="l00053"></a>00053 plot->axisEnabled(QwtPlot::yRight) )<a name="l00054"></a>00054 {<a name="l00055"></a>00055 yAxis = QwtPlot::yRight;<a name="l00056"></a>00056 }<a name="l00057"></a>00057 <a name="l00058"></a>00058 setAxis(xAxis, yAxis);<a name="l00059"></a>00059 }<a name="l00060"></a>00060 <a name="l00070"></a><a class="code" href="class_qwt_plot_picker.html#20ca8f322be817d1890232d1b2764e49">00070</a> <a class="code" href="class_qwt_plot_picker.html#f07dcf038557fae06afdd7ec6e974c5c">QwtPlotPicker::QwtPlotPicker</a>(<span class="keywordtype">int</span> xAxis, <span class="keywordtype">int</span> yAxis, <a class="code" href="class_qwt_plot_canvas.html">QwtPlotCanvas</a> *canvas):<a name="l00071"></a>00071 <a class="code" href="class_qwt_picker.html">QwtPicker</a>(canvas),<a name="l00072"></a>00072 d_xAxis(xAxis),<a name="l00073"></a>00073 d_yAxis(yAxis)<a name="l00074"></a>00074 {<a name="l00075"></a>00075 }<a name="l00076"></a>00076 <a name="l00093"></a><a class="code" href="class_qwt_plot_picker.html#d400b88fc2de41c99898d16a5253718e">00093</a> <a class="code" href="class_qwt_plot_picker.html#f07dcf038557fae06afdd7ec6e974c5c">QwtPlotPicker::QwtPlotPicker</a>(<span class="keywordtype">int</span> xAxis, <span class="keywordtype">int</span> yAxis, <span class="keywordtype">int</span> selectionFlags,<a name="l00094"></a>00094 RubberBand rubberBand, DisplayMode trackerMode,<a name="l00095"></a>00095 <a class="code" href="class_qwt_plot_canvas.html">QwtPlotCanvas</a> *canvas):<a name="l00096"></a>00096 <a class="code" href="class_qwt_picker.html">QwtPicker</a>(selectionFlags, rubberBand, trackerMode, canvas),<a name="l00097"></a>00097 d_xAxis(xAxis),<a name="l00098"></a>00098 d_yAxis(yAxis)<a name="l00099"></a>00099 {<a name="l00100"></a>00100 }<a name="l00101"></a>00101 <a name="l00103"></a><a class="code" href="class_qwt_plot_picker.html#402820e19bc6a9a33184264345703015">00103</a> <a class="code" href="class_qwt_plot_canvas.html">QwtPlotCanvas</a> *<a class="code" href="class_qwt_plot_picker.html#402820e19bc6a9a33184264345703015">QwtPlotPicker::canvas</a>()<a name="l00104"></a>00104 {<a name="l00105"></a>00105 QWidget *w = <a class="code" href="class_qwt_picker.html#da0c12257e006f0066d22c3eb83f667e">parentWidget</a>();<a name="l00106"></a>00106 <span class="keywordflow">if</span> ( w && w->inherits(<span class="stringliteral">"QwtPlotCanvas"</span>) )<a name="l00107"></a>00107 <span class="keywordflow">return</span> (<a class="code" href="class_qwt_plot_canvas.html">QwtPlotCanvas</a> *)w;<a name="l00108"></a>00108 <a name="l00109"></a>00109 <span class="keywordflow">return</span> NULL;<a name="l00110"></a>00110 }<a name="l00111"></a>00111 <a name="l00113"></a><a class="code" href="class_qwt_plot_picker.html#6b3a29ebce6d9e4991b78b0c8887b124">00113</a> <span class="keyword">const</span> <a class="code" href="class_qwt_plot_canvas.html">QwtPlotCanvas</a> *<a class="code" href="class_qwt_plot_picker.html#402820e19bc6a9a33184264345703015">QwtPlotPicker::canvas</a>()<span class="keyword"> const</span><a name="l00114"></a>00114 <span class="keyword"></span>{<a name="l00115"></a>00115 <span class="keywordflow">return</span> ((<a class="code" href="class_qwt_plot_picker.html">QwtPlotPicker</a> *)<span class="keyword">this</span>)->canvas();<a name="l00116"></a>00116 }<a name="l00117"></a>00117 <a name="l00119"></a><a class="code" href="class_qwt_plot_picker.html#c5906d5fe7543f3db7808da44d8197a9">00119</a> <a class="code" href="class_qwt_plot.html">QwtPlot</a> *<a class="code" href="class_qwt_plot_picker.html#c5906d5fe7543f3db7808da44d8197a9">QwtPlotPicker::plot</a>()<a name="l00120"></a>00120 {<a name="l00121"></a>00121 QObject *w = <a class="code" href="class_qwt_plot_picker.html#402820e19bc6a9a33184264345703015">canvas</a>();<a name="l00122"></a>00122 <span class="keywordflow">if</span> ( w )<a name="l00123"></a>00123 {<a name="l00124"></a>00124 w = w->parent();<a name="l00125"></a>00125 <span class="keywordflow">if</span> ( w && w->inherits(<span class="stringliteral">"QwtPlot"</span>) )<a name="l00126"></a>00126 <span class="keywordflow">return</span> (<a class="code" href="class_qwt_plot.html">QwtPlot</a> *)w;<a name="l00127"></a>00127 }<a name="l00128"></a>00128 <a name="l00129"></a>00129 <span class="keywordflow">return</span> NULL;<a name="l00130"></a>00130 }<a name="l00131"></a>00131 <a name="l00133"></a><a class="code" href="class_qwt_plot_picker.html#88103b56426ff2a5fb8713ae8ab2d191">00133</a> <span class="keyword">const</span> <a class="code" href="class_qwt_plot.html">QwtPlot</a> *<a class="code" href="class_qwt_plot_picker.html#c5906d5fe7543f3db7808da44d8197a9">QwtPlotPicker::plot</a>()<span class="keyword"> const</span><a name="l00134"></a>00134 <span class="keyword"></span>{<a name="l00135"></a>00135 <span class="keywordflow">return</span> ((<a class="code" href="class_qwt_plot_picker.html">QwtPlotPicker</a> *)<span class="keyword">this</span>)->plot();<a name="l00136"></a>00136 }<a name="l00137"></a>00137 <a name="l00143"></a><a class="code" href="class_qwt_plot_picker.html#4bdeadb4e7a794bab248d1e2a2c76345">00143</a> QwtDoubleRect <a class="code" href="class_qwt_plot_picker.html#4bdeadb4e7a794bab248d1e2a2c76345">QwtPlotPicker::scaleRect</a>()<span class="keyword"> const</span><a name="l00144"></a>00144 <span class="keyword"></span>{<a name="l00145"></a>00145 QwtDoubleRect rect;<a name="l00146"></a>00146 <a name="l00147"></a>00147 <span class="keywordflow">if</span> ( <a class="code" href="class_qwt_plot_picker.html#c5906d5fe7543f3db7808da44d8197a9">plot</a>() )<a name="l00148"></a>00148 {<a name="l00149"></a>00149 <span class="keyword">const</span> <a class="code" href="class_qwt_scale_div.html">QwtScaleDiv</a> *xs = <a class="code" href="class_qwt_plot_picker.html#c5906d5fe7543f3db7808da44d8197a9">plot</a>()-><a class="code" href="class_qwt_plot.html#596fc7e7960324ddc949c36242c5e6d6">axisScaleDiv</a>(<a class="code" href="class_qwt_plot_picker.html#9cdd6d56e990173a00c6c81edbe8818d">xAxis</a>());<a name="l00150"></a>00150 <span class="keyword">const</span> <a class="code" href="class_qwt_scale_div.html">QwtScaleDiv</a> *ys = <a class="code" href="class_qwt_plot_picker.html#c5906d5fe7543f3db7808da44d8197a9">plot</a>()-><a class="code" href="class_qwt_plot.html#596fc7e7960324ddc949c36242c5e6d6">axisScaleDiv</a>(<a class="code" href="class_qwt_plot_picker.html#3068fb734845abfdf5dff00ead18377f">yAxis</a>());<a name="l00151"></a>00151 <a name="l00152"></a>00152 <span class="keywordflow">if</span> ( xs && ys )<a name="l00153"></a>00153 {<a name="l00154"></a>00154 rect = QwtDoubleRect( xs-><a class="code" href="class_qwt_scale_div.html#a3b6edf00144cdc0a59fbc91784faec3">lBound</a>(), ys-><a class="code" href="class_qwt_scale_div.html#a3b6edf00144cdc0a59fbc91784faec3">lBound</a>(), <a name="l00155"></a>00155 xs-><a class="code" href="class_qwt_scale_div.html#be63aa19b346a4683ab19bf59a5bb37c">range</a>(), ys-><a class="code" href="class_qwt_scale_div.html#be63aa19b346a4683ab19bf59a5bb37c">range</a>() );<a name="l00156"></a>00156 rect = rect.normalized();<a name="l00157"></a>00157 }<a name="l00158"></a>00158 }<a name="l00159"></a>00159 <a name="l00160"></a>00160 <span class="keywordflow">return</span> rect;<a name="l00161"></a>00161 }<a name="l00162"></a>00162 <a name="l00169"></a><a class="code" href="class_qwt_plot_picker.html#a901c86543585c7056133a5cb6652e3d">00169</a> <span class="keywordtype">void</span> <a class="code" href="class_qwt_plot_picker.html#a901c86543585c7056133a5cb6652e3d">QwtPlotPicker::setAxis</a>(<span class="keywordtype">int</span> xAxis, <span class="keywordtype">int</span> yAxis)<a name="l00170"></a>00170 {<a name="l00171"></a>00171 <span class="keyword">const</span> <a class="code" href="class_qwt_plot.html">QwtPlot</a> *plt = <a class="code" href="class_qwt_plot_picker.html#c5906d5fe7543f3db7808da44d8197a9">plot</a>();<a name="l00172"></a>00172 <span class="keywordflow">if</span> ( !plt )<a name="l00173"></a>00173 <span class="keywordflow">return</span>;<a name="l00174"></a>00174 <a name="l00175"></a>00175 <span class="keywordflow">if</span> ( xAxis != d_xAxis || yAxis != d_yAxis )<a name="l00176"></a>00176 {<a name="l00177"></a>00177 d_xAxis = xAxis;<a name="l00178"></a>00178 d_yAxis = yAxis;<a name="l00179"></a>00179 }<a name="l00180"></a>00180 }<a name="l00181"></a>00181 <a name="l00183"></a><a class="code" href="class_qwt_plot_picker.html#9cdd6d56e990173a00c6c81edbe8818d">00183</a> <span class="keywordtype">int</span> <a class="code" href="class_qwt_plot_picker.html#9cdd6d56e990173a00c6c81edbe8818d">QwtPlotPicker::xAxis</a>()<span class="keyword"> const</span><a name="l00184"></a>00184 <span class="keyword"></span>{<a name="l00185"></a>00185 <span class="keywordflow">return</span> d_xAxis;<a name="l00186"></a>00186 }<a name="l00187"></a>00187 ⌨️ 快捷键说明
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