qwt__counter_8cpp-source.html
来自「QWT5.01用于Qt开发的二维图形库程序」· HTML 代码 · 共 532 行 · 第 1/3 页
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<a name="l00191"></a>00191 <span class="keywordflow">return</span>;<a name="l00192"></a>00192 <a name="l00193"></a>00193 d_data->editable = editable;<a name="l00194"></a>00194 d_data->valueEdit->setReadOnly(!editable);<a name="l00195"></a>00195 }<a name="l00196"></a>00196 <a name="l00198"></a><a class="code" href="class_qwt_counter.html#8817a2b253273d694b02a81feb76ef64">00198</a> <span class="keywordtype">bool</span> <a class="code" href="class_qwt_counter.html#8817a2b253273d694b02a81feb76ef64">QwtCounter::editable</a>()<span class="keyword"> const </span><a name="l00199"></a>00199 <span class="keyword"></span>{ <a name="l00200"></a>00200 <span class="keywordflow">return</span> d_data->editable;<a name="l00201"></a>00201 }<a name="l00202"></a>00202 <a name="l00206"></a><a class="code" href="class_qwt_counter.html#d855f1cec9068fd73cce5e2e29fb5771">00206</a> <span class="keywordtype">bool</span> <a class="code" href="class_qwt_counter.html#d855f1cec9068fd73cce5e2e29fb5771">QwtCounter::event</a> ( QEvent * e ) <a name="l00207"></a>00207 {<a name="l00208"></a>00208 <span class="preprocessor">#if QT_VERSION >= 0x040000</span><a name="l00209"></a>00209 <span class="preprocessor"></span> <span class="keywordflow">if</span> ( e->type() == QEvent::PolishRequest )<a name="l00210"></a>00210 <a class="code" href="class_qwt_counter.html#19824b7542778b23372fb77fac75beb8">polish</a>();<a name="l00211"></a>00211 <span class="preprocessor">#endif</span><a name="l00212"></a>00212 <span class="preprocessor"></span> <span class="keywordflow">return</span> QWidget::event(e);<a name="l00213"></a>00213 }<a name="l00214"></a>00214 <a name="l00236"></a><a class="code" href="class_qwt_counter.html#afdc19bff96fcafc4b8ed8e3bf7bf07b">00236</a> <span class="keywordtype">void</span> <a class="code" href="class_qwt_counter.html#afdc19bff96fcafc4b8ed8e3bf7bf07b">QwtCounter::keyPressEvent</a> (QKeyEvent *e)<a name="l00237"></a>00237 {<a name="l00238"></a>00238 <span class="keywordtype">bool</span> accepted = <span class="keyword">true</span>;<a name="l00239"></a>00239 <a name="l00240"></a>00240 <span class="keywordflow">switch</span> ( e->key() )<a name="l00241"></a>00241 {<a name="l00242"></a>00242 <span class="keywordflow">case</span> Qt::Key_Home:<a name="l00243"></a>00243 #<span class="keywordflow">if</span> QT_VERSION >= 0x040000<a name="l00244"></a>00244 <span class="keywordflow">if</span> ( e->modifiers() & Qt::ControlModifier )<a name="l00245"></a>00245 #<span class="keywordflow">else</span><a name="l00246"></a>00246 <span class="keywordflow">if</span> ( e->state() & Qt::ControlButton )<a name="l00247"></a>00247 #endif<a name="l00248"></a>00248 <a class="code" href="class_qwt_counter.html#429a2e986aa46c1231643df5d4c78970">setValue</a>(<a class="code" href="class_qwt_double_range.html#8b8650a6f8a96144d3af21207ee71637">minValue</a>());<a name="l00249"></a>00249 <span class="keywordflow">else</span><a name="l00250"></a>00250 accepted = <span class="keyword">false</span>;<a name="l00251"></a>00251 <span class="keywordflow">break</span>;<a name="l00252"></a>00252 <span class="keywordflow">case</span> Qt::Key_End:<a name="l00253"></a>00253 <span class="preprocessor">#if QT_VERSION >= 0x040000</span><a name="l00254"></a>00254 <span class="preprocessor"></span> <span class="keywordflow">if</span> ( e->modifiers() & Qt::ControlModifier )<a name="l00255"></a>00255 #<span class="keywordflow">else</span><a name="l00256"></a>00256 <span class="keywordflow">if</span> ( e->state() & Qt::ControlButton )<a name="l00257"></a>00257 #endif<a name="l00258"></a>00258 <a class="code" href="class_qwt_counter.html#429a2e986aa46c1231643df5d4c78970">setValue</a>(<a class="code" href="class_qwt_double_range.html#215275a1a8b4218a424ee8444c7fe409">maxValue</a>());<a name="l00259"></a>00259 <span class="keywordflow">else</span><a name="l00260"></a>00260 accepted = <span class="keyword">false</span>;<a name="l00261"></a>00261 <span class="keywordflow">break</span>;<a name="l00262"></a>00262 <span class="keywordflow">case</span> Qt::Key_Up:<a name="l00263"></a>00263 <a class="code" href="class_qwt_double_range.html#299c35c72e9b69f5a0e3dcd2b7da775b">incValue</a>(d_data->increment[0]);<a name="l00264"></a>00264 <span class="keywordflow">break</span>;<a name="l00265"></a>00265 <span class="keywordflow">case</span> Qt::Key_Down:<a name="l00266"></a>00266 <a class="code" href="class_qwt_double_range.html#299c35c72e9b69f5a0e3dcd2b7da775b">incValue</a>(-d_data->increment[0]);<a name="l00267"></a>00267 <span class="keywordflow">break</span>;<a name="l00268"></a>00268 <span class="keywordflow">case</span> Qt::Key_PageUp:<a name="l00269"></a>00269 <span class="keywordflow">case</span> Qt::Key_PageDown:<a name="l00270"></a>00270 {<a name="l00271"></a>00271 <span class="keywordtype">int</span> increment = d_data->increment[0];<a name="l00272"></a>00272 <span class="keywordflow">if</span> ( d_data->nButtons >= 2 )<a name="l00273"></a>00273 increment = d_data->increment[1];<a name="l00274"></a>00274 <span class="keywordflow">if</span> ( d_data->nButtons >= 3 )<a name="l00275"></a>00275 {<a name="l00276"></a>00276 <span class="preprocessor">#if QT_VERSION >= 0x040000</span><a name="l00277"></a>00277 <span class="preprocessor"></span> <span class="keywordflow">if</span> ( e->modifiers() & Qt::ShiftModifier )<a name="l00278"></a>00278 #<span class="keywordflow">else</span><a name="l00279"></a>00279 <span class="keywordflow">if</span> ( e->state() & Qt::ShiftButton )<a name="l00280"></a>00280 #endif<a name="l00281"></a>00281 increment = d_data->increment[2];<a name="l00282"></a>00282 }<a name="l00283"></a>00283 <span class="keywordflow">if</span> ( e->key() == Qt::Key_PageDown )<a name="l00284"></a>00284 increment = -increment;<a name="l00285"></a>00285 <a class="code" href="class_qwt_double_range.html#299c35c72e9b69f5a0e3dcd2b7da775b">incValue</a>(increment);<a name="l00286"></a>00286 <span class="keywordflow">break</span>;<a name="l00287"></a>00287 }<a name="l00288"></a>00288 <span class="keywordflow">default</span>:<a name="l00289"></a>00289 accepted = <span class="keyword">false</span>;<a name="l00290"></a>00290 }<a name="l00291"></a>00291 <a name="l00292"></a>00292 <span class="keywordflow">if</span> ( accepted )<a name="l00293"></a>00293 {<a name="l00294"></a>00294 e->accept();<a name="l00295"></a>00295 <span class="keywordflow">return</span>;<a name="l00296"></a>00296 }<a name="l00297"></a>00297 <a name="l00298"></a>00298 QWidget::keyPressEvent (e);<a name="l00299"></a>00299 }<a name="l00300"></a>00300 <a name="l00301"></a><a class="code" href="class_qwt_counter.html#cdada1ba1d5873b9c8b3f75d63b4685a">00301</a> <span class="keywordtype">void</span> <a class="code" href="class_qwt_counter.html#cdada1ba1d5873b9c8b3f75d63b4685a">QwtCounter::wheelEvent</a>(QWheelEvent *e)<a name="l00302"></a>00302 {<a name="l00303"></a>00303 e->accept();<a name="l00304"></a>00304 <a name="l00305"></a>00305 <span class="keywordflow">if</span> ( d_data->nButtons <= 0 )<a name="l00306"></a>00306 <span class="keywordflow">return</span>;<a name="l00307"></a>00307 <a name="l00308"></a>00308 <span class="keywordtype">int</span> increment = d_data->increment[0];<a name="l00309"></a>00309 <span class="keywordflow">if</span> ( d_data->nButtons >= 2 )<a name="l00310"></a>00310 {<a name="l00311"></a>00311 <span class="preprocessor">#if QT_VERSION >= 0x040000</span><a name="l00312"></a>00312 <span class="preprocessor"></span> <span class="keywordflow">if</span> ( e->modifiers() & Qt::ControlModifier )<a name="l00313"></a>00313 #<span class="keywordflow">else</span><a name="l00314"></a>00314 <span class="keywordflow">if</span> ( e->state() & Qt::ControlButton )<a name="l00315"></a>00315 #endif<a name="l00316"></a>00316 increment = d_data->increment[1];<a name="l00317"></a>00317 }<a name="l00318"></a>00318 <span class="keywordflow">if</span> ( d_data->nButtons >= 3 )<a name="l00319"></a>00319 {<a name="l00320"></a>00320 <span class="preprocessor">#if QT_VERSION >= 0x040000</span><a name="l00321"></a>00321 <span class="preprocessor"></span> <span class="keywordflow">if</span> ( e->modifiers() & Qt::ShiftModifier )<a name="l00322"></a>00322 #<span class="keywordflow">else</span><a name="l00323"></a>00323 <span class="keywordflow">if</span> ( e->state() & Qt::ShiftButton )<a name="l00324"></a>00324 #endif<a name="l00325"></a>00325 increment = d_data->increment[2];<a name="l00326"></a>00326 }<a name="l00327"></a>00327 <a name="l00328"></a>00328 <span class="keywordflow">for</span> ( <span class="keywordtype">int</span> i = 0; i < d_data->nButtons; i++ )<a name="l00329"></a>00329 {<a name="l00330"></a>00330 <span class="keywordflow">if</span> ( d_data->buttonDown[i]->geometry().contains(e->pos()) ||<a name="l00331"></a>00331 d_data->buttonUp[i]->geometry().contains(e->pos()) )<a name="l00332"></a>00332 {<a name="l00333"></a>00333 increment = d_data->increment[i];<a name="l00334"></a>00334 }<a name="l00335"></a>00335 }<a name="l00336"></a>00336 <a name="l00337"></a>00337 <span class="keyword">const</span> <span class="keywordtype">int</span> wheel_delta = 120;<a name="l00338"></a>00338 <a name="l00339"></a>00339 <span class="keywordtype">int</span> delta = e->delta();<a name="l00340"></a>00340 <span class="keywordflow">if</span> ( delta >= 2 * wheel_delta )<a name="l00341"></a>00341 delta /= 2; <span class="comment">// Never saw an abs(delta) < 240</span><a name="l00342"></a>00342 <a name="l00343"></a>00343 incValue(delta / wheel_delta * increment);<a name="l00344"></a>00344 }<a name="l00345"></a>00345 <a name="l00355"></a><a class="code" href="class_qwt_counter.html#6aa68e7fc717fb0e2e48a978301c96eb">00355</a> <span class="keywordtype">void</span> <a class="code" href="class_qwt_counter.html#6aa68e7fc717fb0e2e48a978301c96eb">QwtCounter::setIncSteps</a>(<a class="code" href="class_qwt_counter.html#027cfd91946ca9a19a1d606411e0f374">QwtCounter::Button</a> btn, <span class="keywordtype">int</span> nSteps)<a name="l00356"></a>00356 {<a name="l00357"></a>00357 <span class="keywordflow">if</span> (( btn >= 0) && (btn < ButtonCnt))<a name="l00358"></a>00358 d_data->increment[btn] = nSteps;<a name="l00359"></a>00359 }<a name="l00360"></a>00360 <a name="l00367"></a><a class="code" href="class_qwt_counter.html#9c81b37e547358cc588311d941649de1">00367</a> <span class="keywordtype">int</span> <a class="code" href="class_qwt_counter.html#9c81b37e547358cc588311d941649de1">QwtCounter::incSteps</a>(<a class="code" href="class_qwt_counter.html#027cfd91946ca9a19a1d606411e0f374">QwtCounter::Button</a> btn)<span class="keyword"> const</span><a name="l00368"></a>00368 <span class="keyword"></span>{<a name="l00369"></a>00369 <span class="keywordflow">if</span> (( btn >= 0) && (btn < ButtonCnt))<a name="l00370"></a>00370 <span class="keywordflow">return</span> d_data->increment[btn];<a name="l00371"></a>00371 <a name="l00372"></a>00372 <span class="keywordflow">return</span> 0;<a name="l00373"></a>00373 }<a name="l00374"></a>00374 <a name="l00382"></a><a class="code" href="class_qwt_counter.html#429a2e986aa46c1231643df5d4c78970">00382</a> <span class="keywordtype">void</span> <a class="code" href="class_qwt_counter.html#429a2e986aa46c1231643df5d4c78970">QwtCounter::setValue</a>(<span class="keywordtype">double</span> v)<a name="l00383"></a>00383 {<a name="l00384"></a>00384 <a class="code" href="class_qwt_double_range.html#f6a3aa74c970a2bef29f0c1af99720e8">QwtDoubleRange::setValue</a>(v);<a name="l00385"></a>00385 <a name="l00386"></a>00386 showNum(<a class="code" href="class_qwt_counter.html#121194fadd8cea929c1ac9509f27fe58">value</a>());<a name="l00387"></a>00387 updateButtons();<a name="l00388"></a>00388 }<a name="l00389"></a>00389 <a name="l00393"></a>00393 <span class="keywordtype">void</span> QwtCounter::valueChange()<a name="l00394"></a>00394 {<a name="l00395"></a>00395 <span class="keywordflow">if</span> ( <a class="code" href="class_qwt_double_range.html#fc4921deb3f68a64cc08b0654a040bc6">isValid</a>() )<a name="l00396"></a>00396 showNum(<a class="code" href="class_qwt_counter.html#121194fadd8cea929c1ac9509f27fe58">value</a>());<a name="l00397"></a>00397 <span class="keywordflow">else</span><a name="l00398"></a>00398 d_data->valueEdit->setText(QString::null);<a name="l00399"></a>00399 <a name="l00400"></a>00400 updateButtons();<a name="l00401"></a>00401 <a name="l00402"></a>00402 <span class="keywordflow">if</span> ( <a class="code" href="class_qwt_double_range.html#fc4921deb3f68a64cc08b0654a040bc6">isValid</a>() )<a name="l00403"></a>00403 emit <a class="code" href="class_qwt_counter.html#dd02928c348417fbfadd7095d058f331">valueChanged</a>(<a class="code" href="class_qwt_counter.html#121194fadd8cea929c1ac9509f27fe58">value</a>());<a name="l00404"></a>00404 }<a name="l00405"></a>00405 <a name="l00414"></a>00414 <span class="keywordtype">void</span> QwtCounter::updateButtons()<a name="l00415"></a>00415 {<a name="l00416"></a>00416 <span class="keywordflow">if</span> ( <a class="code" href="class_qwt_double_range.html#fc4921deb3f68a64cc08b0654a040bc6">isValid</a>() )<a name="l00417"></a>00417 {<a name="l00418"></a>00418 <span class="comment">// 1. save enabled state of the smallest down- and up-button</span><a name="l00419"></a>00419 <span class="comment">// 2. change enabled state on under- or over-flow</span><a name="l00420"></a>00420 <a name="l00421"></a>00421 <span class="keywordflow">for</span> ( <span class="keywordtype">int</span> i = 0; i < ButtonCnt; i++ )<a name="l00422"></a>00422 {<a name="l00423"></a>00423 d_data->buttonDown[i]->setEnabled(value() > <a class="code" href="class_qwt_double_range.html#8b8650a6f8a96144d3af21207ee71637">minValue</a>());<a name="l00424"></a>00424 d_data->buttonUp[i]->setEnabled(<a class="code" href="class_qwt_counter.html#121194fadd8cea929c1ac9509f27fe58">value</a>() < <a class="code" href="class_qwt_double_range.html#215275a1a8b4218a424ee8444c7fe409">maxValue</a>());<a name="l00425"></a>00425 }<a name="l00426"></a>00426 }⌨️ 快捷键说明
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