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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
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<title>Qwt User's Guide: qwt_picker_machine.cpp Source File</title>
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<h1>qwt_picker_machine.cpp</h1><pre class="fragment"><div>00001 <span class="comment">/* -*- mode: C++ ; c-file-style: "stroustrup" -*- *****************************</span>
00002 <span class="comment"> * Qwt Widget Library</span>
00003 <span class="comment"> * Copyright (C) 1997 Josef Wilgen</span>
00004 <span class="comment"> * Copyright (C) 2002 Uwe Rathmann</span>
00005 <span class="comment"> *</span>
00006 <span class="comment"> * This library is free software; you can redistribute it and/or</span>
00007 <span class="comment"> * modify it under the terms of the Qwt License, Version 1.0</span>
00008 <span class="comment"> *****************************************************************************/</span>
00009
00010 <span class="preprocessor">#include <qevent.h></span>
00011 <span class="preprocessor">#include "qwt_event_pattern.h"</span>
00012 <span class="preprocessor">#include "qwt_picker_machine.h"</span>
00013
<a name="l00015"></a><a class="code" href="class_qwt_picker_machine.html#b0">00015</a> <a class="code" href="class_qwt_picker_machine.html#b0">QwtPickerMachine::QwtPickerMachine</a>():
00016 d_state(0)
00017 {
00018 }
00019
<a name="l00021"></a><a class="code" href="class_qwt_picker_machine.html#a0">00021</a> <a class="code" href="class_qwt_picker_machine.html#a0">QwtPickerMachine::~QwtPickerMachine</a>()
00022 {
00023 }
00024
<a name="l00026"></a><a class="code" href="class_qwt_picker_machine.html#b1">00026</a> <span class="keywordtype">int</span> <a class="code" href="class_qwt_picker_machine.html#b1">QwtPickerMachine::state</a>()<span class="keyword"> const</span>
00027 <span class="keyword"></span>{
00028 <span class="keywordflow">return</span> d_state;
00029 }
00030
<a name="l00032"></a><a class="code" href="class_qwt_picker_machine.html#b2">00032</a> <span class="keywordtype">void</span> <a class="code" href="class_qwt_picker_machine.html#b2">QwtPickerMachine::setState</a>(<span class="keywordtype">int</span> state)
00033 {
00034 d_state = state;
00035 }
00036
<a name="l00038"></a><a class="code" href="class_qwt_picker_machine.html#a2">00038</a> <span class="keywordtype">void</span> <a class="code" href="class_qwt_picker_machine.html#a2">QwtPickerMachine::reset</a>()
00039 {
00040 <a class="code" href="class_qwt_picker_machine.html#b2">setState</a>(0);
00041 }
00042
<a name="l00044"></a><a class="code" href="class_qwt_picker_click_point_machine.html#a0">00044</a> QValueList<QwtPickerMachine::Command> <a class="code" href="class_qwt_picker_click_point_machine.html#a0">QwtPickerClickPointMachine::transition</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)
00046 {
00047 QValueList<QwtPickerMachine::Command> cmdList;
00048
00049 <span class="keywordflow">switch</span>(e->type())
00050 {
00051 <span class="keywordflow">case</span> QEvent::MouseButtonPress:
00052 {
00053 <span class="keywordflow">if</span> ( eventPattern.<a class="code" href="class_qwt_event_pattern.html#a12">mouseMatch</a>(
00054 QwtEventPattern::MouseSelect1, (<span class="keyword">const</span> QMouseEvent *)e) )
00055 {
00056 cmdList += Begin;
00057 cmdList += Append;
00058 cmdList += End;
00059 }
00060 <span class="keywordflow">break</span>;
00061 }
00062 <span class="keywordflow">case</span> QEvent::KeyPress:
00063 {
00064 <span class="keywordflow">if</span> ( eventPattern.<a class="code" href="class_qwt_event_pattern.html#a13">keyMatch</a>(
00065 QwtEventPattern::KeySelect1, (<span class="keyword">const</span> QKeyEvent *)e) )
00066 {
00067 cmdList += Begin;
00068 cmdList += Append;
00069 cmdList += End;
00070 }
00071 <span class="keywordflow">break</span>;
00072 }
00073 <span class="keywordflow">default</span>:
00074 <span class="keywordflow">break</span>;
00075 }
00076
00077 <span class="keywordflow">return</span> cmdList;
00078 }
00079
<a name="l00081"></a><a class="code" href="class_qwt_picker_drag_point_machine.html#a0">00081</a> QValueList<QwtPickerMachine::Command> <a class="code" href="class_qwt_picker_drag_point_machine.html#a0">QwtPickerDragPointMachine::transition</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)
00083 {
00084 QValueList<QwtPickerMachine::Command> cmdList;
00085
00086 <span class="keywordflow">switch</span>(e->type())
00087 {
00088 <span class="keywordflow">case</span> QEvent::MouseButtonPress:
00089 {
00090 <span class="keywordflow">if</span> ( eventPattern.<a class="code" href="class_qwt_event_pattern.html#a12">mouseMatch</a>(
00091 QwtEventPattern::MouseSelect1, (<span class="keyword">const</span> QMouseEvent *)e) )
00092 {
00093 <span class="keywordflow">if</span> ( <a class="code" href="class_qwt_picker_machine.html#b1">state</a>() == 0 )
00094 {
00095 cmdList += Begin;
00096 cmdList += Append;
00097 <a class="code" href="class_qwt_picker_machine.html#b2">setState</a>(1);
00098 }
00099 }
00100 <span class="keywordflow">break</span>;
00101 }
00102 <span class="keywordflow">case</span> QEvent::MouseMove:
00103 <span class="keywordflow">case</span> QEvent::Wheel:
00104 {
00105 <span class="keywordflow">if</span> ( <a class="code" href="class_qwt_picker_machine.html#b1">state</a>() != 0 )
00106 cmdList += Move;
00107 <span class="keywordflow">break</span>;
00108 }
00109 <span class="keywordflow">case</span> QEvent::MouseButtonRelease:
00110 {
00111 <span class="keywordflow">if</span> ( <a class="code" href="class_qwt_picker_machine.html#b1">state</a>() != 0 )
00112 {
00113 cmdList += End;
00114 <a class="code" href="class_qwt_picker_machine.html#b2">setState</a>(0);
00115 }
00116 <span class="keywordflow">break</span>;
00117 }
00118 <span class="keywordflow">case</span> QEvent::KeyPress:
00119 {
00120 <span class="keywordflow">if</span> ( eventPattern.<a class="code" href="class_qwt_event_pattern.html#a13">keyMatch</a>(
00121 QwtEventPattern::KeySelect1, (<span class="keyword">const</span> QKeyEvent *)e) )
00122 {
00123 <span class="keywordflow">if</span> ( <a class="code" href="class_qwt_picker_machine.html#b1">state</a>() == 0 )
00124 {
00125 cmdList += Begin;
00126 cmdList += Append;
00127 <a class="code" href="class_qwt_picker_machine.html#b2">setState</a>(1);
00128 }
00129 <span class="keywordflow">else</span>
00130 {
00131 cmdList += End;
00132 <a class="code" href="class_qwt_picker_machine.html#b2">setState</a>(0);
00133 }
00134 }
00135 <span class="keywordflow">break</span>;
00136 }
00137 <span class="keywordflow">default</span>:
00138 <span class="keywordflow">break</span>;
00139 }
00140
00141 <span class="keywordflow">return</span> cmdList;
00142 }
00143
<a name="l00145"></a><a class="code" href="class_qwt_picker_click_rect_machine.html#a0">00145</a> QValueList<QwtPickerMachine::Command> <a class="code" href="class_qwt_picker_click_rect_machine.html#a0">QwtPickerClickRectMachine::transition</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)
00147 {
00148 QValueList<QwtPickerMachine::Command> cmdList;
00149
00150 <span class="keywordflow">switch</span>(e->type())
00151 {
00152 <span class="keywordflow">case</span> QEvent::MouseButtonPress:
00153 {
00154 <span class="keywordflow">if</span> ( eventPattern.<a class="code" href="class_qwt_event_pattern.html#a12">mouseMatch</a>(
00155 QwtEventPattern::MouseSelect1, (<span class="keyword">const</span> QMouseEvent *)e) )
00156 {
00157 <span class="keywordflow">switch</span>(<a class="code" href="class_qwt_picker_machine.html#b1">state</a>())
00158 {
00159 <span class="keywordflow">case</span> 0:
00160 {
00161 cmdList += Begin;
00162 cmdList += Append;
00163 <a class="code" href="class_qwt_picker_machine.html#b2">setState</a>(1);
00164 <span class="keywordflow">break</span>;
00165 }
00166 <span class="keywordflow">case</span> 1:
00167 {
00168 <span class="comment">// Uh, strange we missed the MouseButtonRelease</span>
00169 <span class="keywordflow">break</span>;
00170 }
00171 <span class="keywordflow">default</span>:
00172 {
00173 cmdList += End;
00174 <a class="code" href="class_qwt_picker_machine.html#b2">setState</a>(0);
00175 }
00176 }
00177 }
00178 }
00179 <span class="keywordflow">case</span> QEvent::MouseMove:
00180 <span class="keywordflow">case</span> QEvent::Wheel:
00181 {
00182 <span class="keywordflow">if</span> ( <a class="code" href="class_qwt_picker_machine.html#b1">state</a>() != 0 )
00183 cmdList += Move;
00184 <span class="keywordflow">break</span>;
00185 }
00186 <span class="keywordflow">case</span> QEvent::MouseButtonRelease:
00187 {
00188 <span class="keywordflow">if</span> ( eventPattern.<a class="code" href="class_qwt_event_pattern.html#a12">mouseMatch</a>(
00189 QwtEventPattern::MouseSelect1, (<span class="keyword">const</span> QMouseEvent *)e) )
00190 {
00191 <span class="keywordflow">if</span> ( <a class="code" href="class_qwt_picker_machine.html#b1">state</a>() == 1 )
00192 {
00193 cmdList += Append;
00194 <a class="code" href="class_qwt_picker_machine.html#b2">setState</a>(2);
00195 }
00196 }
00197 <span class="keywordflow">break</span>;
00198 }
00199 <span class="keywordflow">case</span> QEvent::KeyPress:
00200 {
00201 <span class="keywordflow">if</span> ( eventPattern.<a class="code" href="class_qwt_event_pattern.html#a13">keyMatch</a>(
00202 QwtEventPattern::KeySelect1, (<span class="keyword">const</span> QKeyEvent *)e) )
00203 {
00204 <span class="keywordflow">if</span> ( <a class="code" href="class_qwt_picker_machine.html#b1">state</a>() == 0 )
00205 {
00206 cmdList += Begin;
00207 cmdList += Append;
00208 <a class="code" href="class_qwt_picker_machine.html#b2">setState</a>(1);
00209 }
00210 <span class="keywordflow">else</span>
00211 {
00212 <span class="keywordflow">if</span> ( <a class="code" href="class_qwt_picker_machine.html#b1">state</a>() == 1 )
00213 {
00214 cmdList += Append;
00215 <a class="code" href="class_qwt_picker_machine.html#b2">setState</a>(2);
00216 }
00217 <span class="keywordflow">else</span> <span class="keywordflow">if</span> ( <a class="code" href="class_qwt_picker_machine.html#b1">state</a>() == 2 )
00218 {
00219 cmdList += End;
00220 <a class="code" href="class_qwt_picker_machine.html#b2">setState</a>(0);
00221 }
00222 }
00223 }
00224 <span class="keywordflow">break</span>;
00225 }
00226 <span class="keywordflow">default</span>:
00227 <span class="keywordflow">break</span>;
00228 }
00229
00230 <span class="keywordflow">return</span> cmdList;
00231 }
00232
<a name="l00234"></a><a class="code" href="class_qwt_picker_drag_rect_machine.html#a0">00234</a> QValueList<QwtPickerMachine::Command> <a class="code" href="class_qwt_picker_drag_rect_machine.html#a0">QwtPickerDragRectMachine::transition</a>(
00235 <span class="keyword">const</span> <a class="code" href="class_qwt_event_pattern.html">QwtEventPattern</a> &eventPattern, <span class="keyword">const</span> QEvent *e)
00236 {
00237 QValueList<QwtPickerMachine::Command> cmdList;
00238
00239 <span class="keywordflow">switch</span>(e->type())
00240 {
00241 <span class="keywordflow">case</span> QEvent::MouseButtonPress:
00242 {
00243 <span class="keywordflow">if</span> ( eventPattern.<a class="code" href="class_qwt_event_pattern.html#a12">mouseMatch</a>(
00244 QwtEventPattern::MouseSelect1, (<span class="keyword">const</span> QMouseEvent *)e) )
00245 {
00246 <span class="keywordflow">if</span> ( <a class="code" href="class_qwt_picker_machine.html#b1">state</a>() == 0 )
00247 {
00248 cmdList += Begin;
00249 cmdList += Append;
00250 cmdList += Append;
00251 <a class="code" href="class_qwt_picker_machine.html#b2">setState</a>(2);
00252 }
00253 }
00254 <span class="keywordflow">break</span>;
00255 }
00256 <span class="keywordflow">case</span> QEvent::MouseMove:
00257 <span class="keywordflow">case</span> QEvent::Wheel:
00258 {
00259 <span class="keywordflow">if</span> ( <a class="code" href="class_qwt_picker_machine.html#b1">state</a>() != 0 )
00260 cmdList += Move;
00261 <span class="keywordflow">break</span>;
00262 }
00263 <span class="keywordflow">case</span> QEvent::MouseButtonRelease:
00264 {
00265 <span class="keywordflow">if</span> ( <a class="code" href="class_qwt_picker_machine.html#b1">state</a>() == 2 )
00266 {
00267 cmdList += End;
00268 <a class="code" href="class_qwt_picker_machine.html#b2">setState</a>(0);
00269 }
00270 <span class="keywordflow">break</span>;
00271 }
00272 <span class="keywordflow">case</span> QEvent::KeyPress:
00273 {
00274 <span class="keywordflow">if</span> ( eventPattern.<a class="code" href="class_qwt_event_pattern.html#a13">keyMatch</a>(
00275 QwtEventPattern::KeySelect1, (<span class="keyword">const</span> QKeyEvent *)e) )
00276 {
00277 <span class="keywordflow">if</span> ( <a class="code" href="class_qwt_picker_machine.html#b1">state</a>() == 0 )
00278 {
00279 cmdList += Begin;
00280 cmdList += Append;
00281 cmdList += Append;
00282 <a class="code" href="class_qwt_picker_machine.html#b2">setState</a>(2);
00283 }
00284 <span class="keywordflow">else</span>
00285 {
00286 cmdList += End;
00287 <a class="code" href="class_qwt_picker_machine.html#b2">setState</a>(0);
00288 }
00289 }
00290 <span class="keywordflow">break</span>;
00291 }
00292 <span class="keywordflow">default</span>:
00293 <span class="keywordflow">break</span>;
00294 }
00295
00296 <span class="keywordflow">return</span> cmdList;
00297 }
00298
<a name="l00300"></a><a class="code" href="class_qwt_picker_polygon_machine.html#a0">00300</a> QValueList<QwtPickerMachine::Command> <a class="code" href="class_qwt_picker_polygon_machine.html#a0">QwtPickerPolygonMachine::transition</a>(
00301 <span class="keyword">const</span> <a class="code" href="class_qwt_event_pattern.html">QwtEventPattern</a> &eventPattern, <span class="keyword">const</span> QEvent *e)
00302 {
00303 QValueList<QwtPickerMachine::Command> cmdList;
00304
00305 <span class="keywordflow">switch</span>(e->type())
00306 {
00307 <span class="keywordflow">case</span> QEvent::MouseButtonPress:
00308 {
00309 <span class="keywordflow">if</span> ( eventPattern.<a class="code" href="class_qwt_event_pattern.html#a12">mouseMatch</a>(
00310 QwtEventPattern::MouseSelect1, (<span class="keyword">const</span> QMouseEvent *)e) )
00311 {
00312 <span class="keywordflow">if</span> (<a class="code" href="class_qwt_picker_machine.html#b1">state</a>() == 0)
00313 {
00314 cmdList += Begin;
00315 cmdList += Append;
00316 cmdList += Append;
00317 <a class="code" href="class_qwt_picker_machine.html#b2">setState</a>(1);
00318 }
00319 <span class="keywordflow">else</span>
00320 {
00321 cmdList += End;
00322 <a class="code" href="class_qwt_picker_machine.html#b2">setState</a>(0);
00323 }
00324 }
00325 <span class="keywordflow">if</span> ( eventPattern.<a class="code" href="class_qwt_event_pattern.html#a12">mouseMatch</a>(
00326 QwtEventPattern::MouseSelect2, (<span class="keyword">const</span> QMouseEvent *)e) )
00327 {
00328 <span class="keywordflow">if</span> (<a class="code" href="class_qwt_picker_machine.html#b1">state</a>() == 1)
00329 cmdList += Append;
00330 }
00331 <span class="keywordflow">break</span>;
00332 }
00333 <span class="keywordflow">case</span> QEvent::MouseMove:
00334 <span class="keywordflow">case</span> QEvent::Wheel:
00335 {
00336 <span class="keywordflow">if</span> ( <a class="code" href="class_qwt_picker_machine.html#b1">state</a>() != 0 )
00337 cmdList += Move;
00338 <span class="keywordflow">break</span>;
00339 }
00340 <span class="keywordflow">case</span> QEvent::KeyPress:
00341 {
00342 <span class="keywordflow">if</span> ( eventPattern.<a class="code" href="class_qwt_event_pattern.html#a13">keyMatch</a>(
00343 QwtEventPattern::KeySelect1, (<span class="keyword">const</span> QKeyEvent *)e) )
00344 {
00345 <span class="keywordflow">if</span> ( <a class="code" href="class_qwt_picker_machine.html#b1">state</a>() == 0 )
00346 {
00347 cmdList += Begin;
00348 cmdList += Append;
00349 cmdList += Append;
00350 <a class="code" href="class_qwt_picker_machine.html#b2">setState</a>(1);
00351 }
00352 <span class="keywordflow">else</span>
00353 {
00354 cmdList += End;
00355 <a class="code" href="class_qwt_picker_machine.html#b2">setState</a>(0);
00356 }
00357 }
00358 <span class="keywordflow">else</span> <span class="keywordflow">if</span> ( eventPattern.<a class="code" href="class_qwt_event_pattern.html#a13">keyMatch</a>(
00359 QwtEventPattern::KeySelect2, (<span class="keyword">const</span> QKeyEvent *)e) )
00360 {
00361 <span class="keywordflow">if</span> ( <a class="code" href="class_qwt_picker_machine.html#b1">state</a>() == 1 )
00362 cmdList += Append;
00363 }
00364 <span class="keywordflow">break</span>;
00365 }
00366 <span class="keywordflow">default</span>:
00367 <span class="keywordflow">break</span>;
00368 }
00369
00370 <span class="keywordflow">return</span> cmdList;
00371 }
</div></pre><hr size="1"><address style="align: right;"><small>Generated on Tue Nov 16 21:12:20 2004 for Qwt User's Guide by
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