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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_picker_machine.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_picker_machine.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 <qevent.h></span><a name="l00011"></a>00011 <span class="preprocessor">#include "qwt_event_pattern.h"</span><a name="l00012"></a>00012 <span class="preprocessor">#include "qwt_picker_machine.h"</span><a name="l00013"></a>00013 <a name="l00015"></a><a class="code" href="class_qwt_picker_machine.html#1f0f40e1fd28dd1296ee00720ccf49bb">00015</a> <a class="code" href="class_qwt_picker_machine.html#1f0f40e1fd28dd1296ee00720ccf49bb">QwtPickerMachine::QwtPickerMachine</a>():<a name="l00016"></a>00016 d_state(0)<a name="l00017"></a>00017 {<a name="l00018"></a>00018 }<a name="l00019"></a>00019 <a name="l00021"></a><a class="code" href="class_qwt_picker_machine.html#a1164dfb8ae6ac62fb3b6cb19efcb3e5">00021</a> <a class="code" href="class_qwt_picker_machine.html#a1164dfb8ae6ac62fb3b6cb19efcb3e5">QwtPickerMachine::~QwtPickerMachine</a>()<a name="l00022"></a>00022 {<a name="l00023"></a>00023 }<a name="l00024"></a>00024 <a name="l00026"></a><a class="code" href="class_qwt_picker_machine.html#9060b1036ef5125968fc7030681d73c0">00026</a> <span class="keywordtype">int</span> <a class="code" href="class_qwt_picker_machine.html#9060b1036ef5125968fc7030681d73c0">QwtPickerMachine::state</a>()<span class="keyword"> const</span><a name="l00027"></a>00027 <span class="keyword"></span>{<a name="l00028"></a>00028 <span class="keywordflow">return</span> d_state;<a name="l00029"></a>00029 }<a name="l00030"></a>00030 <a name="l00032"></a><a class="code" href="class_qwt_picker_machine.html#569c426543e4a6aa15c221eb7c4910f0">00032</a> <span class="keywordtype">void</span> <a class="code" href="class_qwt_picker_machine.html#569c426543e4a6aa15c221eb7c4910f0">QwtPickerMachine::setState</a>(<span class="keywordtype">int</span> state)<a name="l00033"></a>00033 {<a name="l00034"></a>00034 d_state = state;<a name="l00035"></a>00035 }<a name="l00036"></a>00036 <a name="l00038"></a><a class="code" href="class_qwt_picker_machine.html#ce6daa55324a8daab3839cf8ba677a93">00038</a> <span class="keywordtype">void</span> <a class="code" href="class_qwt_picker_machine.html#ce6daa55324a8daab3839cf8ba677a93">QwtPickerMachine::reset</a>() <a name="l00039"></a>00039 {<a name="l00040"></a>00040 <a class="code" href="class_qwt_picker_machine.html#569c426543e4a6aa15c221eb7c4910f0">setState</a>(0);<a name="l00041"></a>00041 }<a name="l00042"></a>00042 <a name="l00044"></a><a class="code" href="class_qwt_picker_click_point_machine.html#458108629cdb78958b3c45a9df876088">00044</a> <a class="code" href="class_qwt_picker_machine.html#c173f6053e54747d7154bbc015763a22">QwtPickerMachine::CommandList</a> <a class="code" href="class_qwt_picker_click_point_machine.html#458108629cdb78958b3c45a9df876088">QwtPickerClickPointMachine::transition</a>(<a name="l00045"></a>00045 <span class="keyword">const</span> <a class="code" href="class_qwt_event_pattern.html">QwtEventPattern</a> &eventPattern, <span class="keyword">const</span> QEvent *e)<a name="l00046"></a>00046 { <a name="l00047"></a>00047 <a class="code" href="class_qwt_picker_machine.html#c173f6053e54747d7154bbc015763a22">QwtPickerMachine::CommandList</a> cmdList;<a name="l00048"></a>00048 <a name="l00049"></a>00049 <span class="keywordflow">switch</span>(e->type())<a name="l00050"></a>00050 {<a name="l00051"></a>00051 <span class="keywordflow">case</span> QEvent::MouseButtonPress:<a name="l00052"></a>00052 {<a name="l00053"></a>00053 <span class="keywordflow">if</span> ( eventPattern.<a class="code" href="class_qwt_event_pattern.html#ab4d0d2780ed7b3de54502b05fb9f366">mouseMatch</a>(<a name="l00054"></a>00054 QwtEventPattern::MouseSelect1, (<span class="keyword">const</span> QMouseEvent *)e) )<a name="l00055"></a>00055 {<a name="l00056"></a>00056 cmdList += Begin;<a name="l00057"></a>00057 cmdList += Append;<a name="l00058"></a>00058 cmdList += End;<a name="l00059"></a>00059 }<a name="l00060"></a>00060 <span class="keywordflow">break</span>;<a name="l00061"></a>00061 }<a name="l00062"></a>00062 <span class="keywordflow">case</span> QEvent::KeyPress:<a name="l00063"></a>00063 { <a name="l00064"></a>00064 <span class="keywordflow">if</span> ( eventPattern.keyMatch(<a name="l00065"></a>00065 QwtEventPattern::KeySelect1, (<span class="keyword">const</span> QKeyEvent *)e) )<a name="l00066"></a>00066 {<a name="l00067"></a>00067 cmdList += Begin;<a name="l00068"></a>00068 cmdList += Append;<a name="l00069"></a>00069 cmdList += End;<a name="l00070"></a>00070 } <a name="l00071"></a>00071 <span class="keywordflow">break</span>;<a name="l00072"></a>00072 }<a name="l00073"></a>00073 <span class="keywordflow">default</span>:<a name="l00074"></a>00074 <span class="keywordflow">break</span>;<a name="l00075"></a>00075 }<a name="l00076"></a>00076 <a name="l00077"></a>00077 <span class="keywordflow">return</span> cmdList;<a name="l00078"></a>00078 }<a name="l00079"></a>00079 <a name="l00081"></a><a class="code" href="class_qwt_picker_drag_point_machine.html#f46c1217838359753d325739107d7833">00081</a> <a class="code" href="class_qwt_picker_machine.html#c173f6053e54747d7154bbc015763a22">QwtPickerMachine::CommandList</a> <a class="code" href="class_qwt_picker_drag_point_machine.html#f46c1217838359753d325739107d7833">QwtPickerDragPointMachine::transition</a>(<a name="l00082"></a>00082 <span class="keyword">const</span> <a class="code" href="class_qwt_event_pattern.html">QwtEventPattern</a> &eventPattern, <span class="keyword">const</span> QEvent *e)<a name="l00083"></a>00083 { <a name="l00084"></a>00084 <a class="code" href="class_qwt_picker_machine.html#c173f6053e54747d7154bbc015763a22">QwtPickerMachine::CommandList</a> cmdList;<a name="l00085"></a>00085 <a name="l00086"></a>00086 <span class="keywordflow">switch</span>(e->type())<a name="l00087"></a>00087 {<a name="l00088"></a>00088 <span class="keywordflow">case</span> QEvent::MouseButtonPress:<a name="l00089"></a>00089 {<a name="l00090"></a>00090 <span class="keywordflow">if</span> ( eventPattern.<a class="code" href="class_qwt_event_pattern.html#ab4d0d2780ed7b3de54502b05fb9f366">mouseMatch</a>(<a name="l00091"></a>00091 QwtEventPattern::MouseSelect1, (<span class="keyword">const</span> QMouseEvent *)e) )<a name="l00092"></a>00092 {<a name="l00093"></a>00093 <span class="keywordflow">if</span> ( <a class="code" href="class_qwt_picker_machine.html#9060b1036ef5125968fc7030681d73c0">state</a>() == 0 )<a name="l00094"></a>00094 {<a name="l00095"></a>00095 cmdList += Begin;<a name="l00096"></a>00096 cmdList += Append;<a name="l00097"></a>00097 <a class="code" href="class_qwt_picker_machine.html#569c426543e4a6aa15c221eb7c4910f0">setState</a>(1);<a name="l00098"></a>00098 }<a name="l00099"></a>00099 }<a name="l00100"></a>00100 <span class="keywordflow">break</span>;<a name="l00101"></a>00101 }<a name="l00102"></a>00102 <span class="keywordflow">case</span> QEvent::MouseMove:<a name="l00103"></a>00103 <span class="keywordflow">case</span> QEvent::Wheel:<a name="l00104"></a>00104 {<a name="l00105"></a>00105 <span class="keywordflow">if</span> ( state() != 0 )<a name="l00106"></a>00106 cmdList += Move;<a name="l00107"></a>00107 <span class="keywordflow">break</span>;<a name="l00108"></a>00108 }<a name="l00109"></a>00109 <span class="keywordflow">case</span> QEvent::MouseButtonRelease:<a name="l00110"></a>00110 {<a name="l00111"></a>00111 <span class="keywordflow">if</span> ( state() != 0 )<a name="l00112"></a>00112 {<a name="l00113"></a>00113 cmdList += End;<a name="l00114"></a>00114 setState(0);<a name="l00115"></a>00115 }<a name="l00116"></a>00116 <span class="keywordflow">break</span>;<a name="l00117"></a>00117 }<a name="l00118"></a>00118 <span class="keywordflow">case</span> QEvent::KeyPress:<a name="l00119"></a>00119 {<a name="l00120"></a>00120 <span class="keywordflow">if</span> ( eventPattern.keyMatch(<a name="l00121"></a>00121 QwtEventPattern::KeySelect1, (<span class="keyword">const</span> QKeyEvent *)e) )<a name="l00122"></a>00122 {<a name="l00123"></a>00123 <span class="keywordflow">if</span> ( state() == 0 )<a name="l00124"></a>00124 {<a name="l00125"></a>00125 cmdList += Begin;<a name="l00126"></a>00126 cmdList += Append;<a name="l00127"></a>00127 setState(1);<a name="l00128"></a>00128 }<a name="l00129"></a>00129 <span class="keywordflow">else</span><a name="l00130"></a>00130 {<a name="l00131"></a>00131 cmdList += End;<a name="l00132"></a>00132 setState(0);<a name="l00133"></a>00133 }<a name="l00134"></a>00134 }<a name="l00135"></a>00135 <span class="keywordflow">break</span>;<a name="l00136"></a>00136 }<a name="l00137"></a>00137 <span class="keywordflow">default</span>:<a name="l00138"></a>00138 <span class="keywordflow">break</span>;<a name="l00139"></a>00139 }<a name="l00140"></a>00140 <a name="l00141"></a>00141 <span class="keywordflow">return</span> cmdList;<a name="l00142"></a>00142 }<a name="l00143"></a>00143 <a name="l00145"></a><a class="code" href="class_qwt_picker_click_rect_machine.html#6c495290237b9545ca15ef166c89e9bf">00145</a> <a class="code" href="class_qwt_picker_machine.html#c173f6053e54747d7154bbc015763a22">QwtPickerMachine::CommandList</a> <a class="code" href="class_qwt_picker_click_rect_machine.html#6c495290237b9545ca15ef166c89e9bf">QwtPickerClickRectMachine::transition</a>(<a name="l00146"></a>00146 <span class="keyword">const</span> <a class="code" href="class_qwt_event_pattern.html">QwtEventPattern</a> &eventPattern, <span class="keyword">const</span> QEvent *e)<a name="l00147"></a>00147 { <a name="l00148"></a>00148 <a class="code" href="class_qwt_picker_machine.html#c173f6053e54747d7154bbc015763a22">QwtPickerMachine::CommandList</a> cmdList;<a name="l00149"></a>00149 <a name="l00150"></a>00150 <span class="keywordflow">switch</span>(e->type())<a name="l00151"></a>00151 {<a name="l00152"></a>00152 <span class="keywordflow">case</span> QEvent::MouseButtonPress:<a name="l00153"></a>00153 {<a name="l00154"></a>00154 <span class="keywordflow">if</span> ( eventPattern.<a class="code" href="class_qwt_event_pattern.html#ab4d0d2780ed7b3de54502b05fb9f366">mouseMatch</a>(<a name="l00155"></a>00155 QwtEventPattern::MouseSelect1, (<span class="keyword">const</span> QMouseEvent *)e) )<a name="l00156"></a>00156 {<a name="l00157"></a>00157 <span class="keywordflow">switch</span>(<a class="code" href="class_qwt_picker_machine.html#9060b1036ef5125968fc7030681d73c0">state</a>())<a name="l00158"></a>00158 {<a name="l00159"></a>00159 <span class="keywordflow">case</span> 0:<a name="l00160"></a>00160 { <a name="l00161"></a>00161 cmdList += Begin;<a name="l00162"></a>00162 cmdList += Append;<a name="l00163"></a>00163 <a class="code" href="class_qwt_picker_machine.html#569c426543e4a6aa15c221eb7c4910f0">setState</a>(1);<a name="l00164"></a>00164 <span class="keywordflow">break</span>;<a name="l00165"></a>00165 }<a name="l00166"></a>00166 <span class="keywordflow">case</span> 1:<a name="l00167"></a>00167 {<a name="l00168"></a>00168 <span class="comment">// Uh, strange we missed the MouseButtonRelease</span><a name="l00169"></a>00169 <span class="keywordflow">break</span>; <a name="l00170"></a>00170 }<a name="l00171"></a>00171 <span class="keywordflow">default</span>:<a name="l00172"></a>00172 {<a name="l00173"></a>00173 cmdList += End;<a name="l00174"></a>00174 <a class="code" href="class_qwt_picker_machine.html#569c426543e4a6aa15c221eb7c4910f0">setState</a>(0);<a name="l00175"></a>00175 }<a name="l00176"></a>00176 }<a name="l00177"></a>00177 }<a name="l00178"></a>00178 }<a name="l00179"></a>00179 <span class="keywordflow">case</span> QEvent::MouseMove:<a name="l00180"></a>00180 <span class="keywordflow">case</span> QEvent::Wheel:<a name="l00181"></a>00181 {<a name="l00182"></a>00182 <span class="keywordflow">if</span> ( state() != 0 )<a name="l00183"></a>00183 cmdList += Move;<a name="l00184"></a>00184 <span class="keywordflow">break</span>;<a name="l00185"></a>00185 }⌨️ 快捷键说明
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