📄 qwt__wheel_8cpp-source.html
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<a name="l00317"></a>00317 <a name="l00325"></a><a class="code" href="class_qwt_wheel.html#cae74c8161fd1df728f26253dd1defa8">00325</a> <span class="keywordtype">void</span> <a class="code" href="class_qwt_wheel.html#cae74c8161fd1df728f26253dd1defa8">QwtWheel::setOrientation</a>(Qt::Orientation o)<a name="l00326"></a>00326 {<a name="l00327"></a>00327 <span class="keywordflow">if</span> ( <a class="code" href="class_qwt_abstract_slider.html#4d2521b9c31ec64b71d8e1771b156d88">orientation</a>() == o )<a name="l00328"></a>00328 <span class="keywordflow">return</span>;<a name="l00329"></a>00329 <a name="l00330"></a>00330 <span class="preprocessor">#if QT_VERSION >= 0x040000</span><a name="l00331"></a>00331 <span class="preprocessor"></span> <span class="keywordflow">if</span> ( !testAttribute(Qt::WA_WState_OwnSizePolicy) )<a name="l00332"></a>00332 <span class="preprocessor">#else</span><a name="l00333"></a>00333 <span class="preprocessor"></span> <span class="keywordflow">if</span> ( !testWState( WState_OwnSizePolicy ) ) <a name="l00334"></a>00334 <span class="preprocessor">#endif</span><a name="l00335"></a>00335 <span class="preprocessor"></span> {<a name="l00336"></a>00336 QSizePolicy sp = sizePolicy();<a name="l00337"></a>00337 sp.transpose();<a name="l00338"></a>00338 setSizePolicy(sp);<a name="l00339"></a>00339 <a name="l00340"></a>00340 <span class="preprocessor">#if QT_VERSION >= 0x040000</span><a name="l00341"></a>00341 <span class="preprocessor"></span> setAttribute(Qt::WA_WState_OwnSizePolicy, <span class="keyword">false</span>);<a name="l00342"></a>00342 <span class="preprocessor">#else</span><a name="l00343"></a>00343 <span class="preprocessor"></span> clearWState( WState_OwnSizePolicy );<a name="l00344"></a>00344 <span class="preprocessor">#endif</span><a name="l00345"></a>00345 <span class="preprocessor"></span> }<a name="l00346"></a>00346 <a name="l00347"></a>00347 <a class="code" href="class_qwt_abstract_slider.html#6b0fdc50bfbb0a8bb40f0dc6bf493b2c">QwtAbstractSlider::setOrientation</a>(o);<a name="l00348"></a>00348 <a class="code" href="class_qwt_wheel.html#03a6adc4f6516143501c8114f164d47c">layoutWheel</a>();<a name="l00349"></a>00349 }<a name="l00350"></a>00350 <a name="l00359"></a><a class="code" href="class_qwt_wheel.html#d90821d39ff243db547a1c9b0b0ef545">00359</a> <span class="keywordtype">void</span> <a class="code" href="class_qwt_wheel.html#d90821d39ff243db547a1c9b0b0ef545">QwtWheel::setViewAngle</a>(<span class="keywordtype">double</span> angle)<a name="l00360"></a>00360 {<a name="l00361"></a>00361 d_data->viewAngle = qwtLim( angle, 10.0, 175.0 );<a name="l00362"></a>00362 update();<a name="l00363"></a>00363 }<a name="l00364"></a>00364 <a name="l00365"></a><a class="code" href="class_qwt_wheel.html#49c04ea6e1ec21268f63d45239bc9333">00365</a> <span class="keywordtype">double</span> <a class="code" href="class_qwt_wheel.html#49c04ea6e1ec21268f63d45239bc9333">QwtWheel::viewAngle</a>()<span class="keyword"> const </span><a name="l00366"></a>00366 <span class="keyword"></span>{<a name="l00367"></a>00367 <span class="keywordflow">return</span> d_data->viewAngle;<a name="l00368"></a>00368 }<a name="l00369"></a>00369 <a name="l00375"></a><a class="code" href="class_qwt_wheel.html#d1feb5d4c2a9b410c4d5d108a5630904">00375</a> <span class="keywordtype">void</span> <a class="code" href="class_qwt_wheel.html#d1feb5d4c2a9b410c4d5d108a5630904">QwtWheel::drawWheel</a>( QPainter *p, <span class="keyword">const</span> QRect &r )<a name="l00376"></a>00376 {<a name="l00377"></a>00377 <span class="comment">//</span><a name="l00378"></a>00378 <span class="comment">// draw background gradient</span><a name="l00379"></a>00379 <span class="comment">//</span><a name="l00380"></a>00380 <a class="code" href="class_qwt_wheel.html#33b95a78f006f36fee8dafea9531afa9">drawWheelBackground</a>( p, r );<a name="l00381"></a>00381 <a name="l00382"></a>00382 <span class="keywordflow">if</span> ( <a class="code" href="class_qwt_double_range.html#215275a1a8b4218a424ee8444c7fe409">maxValue</a>() == <a class="code" href="class_qwt_double_range.html#8b8650a6f8a96144d3af21207ee71637">minValue</a>() || d_data->totalAngle == 0.0 )<a name="l00383"></a>00383 <span class="keywordflow">return</span>;<a name="l00384"></a>00384 <a name="l00385"></a>00385 <span class="preprocessor">#if QT_VERSION < 0x040000</span><a name="l00386"></a>00386 <span class="preprocessor"></span> <span class="keyword">const</span> QColor light = colorGroup().light();<a name="l00387"></a>00387 <span class="keyword">const</span> QColor dark = colorGroup().dark();<a name="l00388"></a>00388 <span class="preprocessor">#else</span><a name="l00389"></a>00389 <span class="preprocessor"></span> <span class="keyword">const</span> QColor light = palette().color(QPalette::Light);<a name="l00390"></a>00390 <span class="keyword">const</span> QColor dark = palette().color(QPalette::Dark);<a name="l00391"></a>00391 <span class="preprocessor">#endif</span><a name="l00392"></a>00392 <span class="preprocessor"></span><a name="l00393"></a>00393 <span class="keyword">const</span> <span class="keywordtype">double</span> sign = (<a class="code" href="class_qwt_double_range.html#8b8650a6f8a96144d3af21207ee71637">minValue</a>() < <a class="code" href="class_qwt_double_range.html#215275a1a8b4218a424ee8444c7fe409">maxValue</a>()) ? 1.0 : -1.0;<a name="l00394"></a>00394 <span class="keywordtype">double</span> cnvFactor = qwtAbs(d_data->totalAngle / (<a class="code" href="class_qwt_double_range.html#215275a1a8b4218a424ee8444c7fe409">maxValue</a>() - <a class="code" href="class_qwt_double_range.html#8b8650a6f8a96144d3af21207ee71637">minValue</a>()));<a name="l00395"></a>00395 <span class="keyword">const</span> <span class="keywordtype">double</span> halfIntv = 0.5 * d_data->viewAngle / cnvFactor;<a name="l00396"></a>00396 <span class="keyword">const</span> <span class="keywordtype">double</span> loValue = <a class="code" href="class_qwt_double_range.html#7777cf257c812579c4891512f1b6cad0">value</a>() - halfIntv;<a name="l00397"></a>00397 <span class="keyword">const</span> <span class="keywordtype">double</span> hiValue = <a class="code" href="class_qwt_double_range.html#7777cf257c812579c4891512f1b6cad0">value</a>() + halfIntv;<a name="l00398"></a>00398 <span class="keyword">const</span> <span class="keywordtype">double</span> tickWidth = 360.0 / double(d_data->tickCnt) / cnvFactor;<a name="l00399"></a>00399 <span class="keyword">const</span> <span class="keywordtype">double</span> sinArc = sin(d_data->viewAngle * M_PI / 360.0);<a name="l00400"></a>00400 cnvFactor *= M_PI / 180.0;<a name="l00401"></a>00401 <a name="l00402"></a>00402 <a name="l00403"></a>00403 <span class="comment">//</span><a name="l00404"></a>00404 <span class="comment">// draw grooves</span><a name="l00405"></a>00405 <span class="comment">//</span><a name="l00406"></a>00406 <span class="keywordflow">if</span> ( <a class="code" href="class_qwt_abstract_slider.html#4d2521b9c31ec64b71d8e1771b156d88">orientation</a>() == Qt::Horizontal )<a name="l00407"></a>00407 {<a name="l00408"></a>00408 <span class="keyword">const</span> <span class="keywordtype">double</span> halfSize = double(r.width()) * 0.5;<a name="l00409"></a>00409 <a name="l00410"></a>00410 <span class="keywordtype">int</span> l1 = r.y() + d_data->intBorder;<a name="l00411"></a>00411 <span class="keywordtype">int</span> l2 = r.y() + r.height() - d_data->intBorder - 1;<a name="l00412"></a>00412 <a name="l00413"></a>00413 <span class="comment">// draw one point over the border if border > 1</span><a name="l00414"></a>00414 <span class="keywordflow">if</span> ( d_data->intBorder > 1 )<a name="l00415"></a>00415 {<a name="l00416"></a>00416 l1 --;<a name="l00417"></a>00417 l2 ++;<a name="l00418"></a>00418 }<a name="l00419"></a>00419 <a name="l00420"></a>00420 <span class="keyword">const</span> <span class="keywordtype">int</span> maxpos = r.x() + r.width() - 2;<a name="l00421"></a>00421 <span class="keyword">const</span> <span class="keywordtype">int</span> minpos = r.x() + 2;<a name="l00422"></a>00422 <a name="l00423"></a>00423 <span class="comment">//</span><a name="l00424"></a>00424 <span class="comment">// draw tick marks</span><a name="l00425"></a>00425 <span class="comment">//</span><a name="l00426"></a>00426 <span class="keywordflow">for</span> ( <span class="keywordtype">double</span> tickValue = ceil(loValue / tickWidth) * tickWidth;<a name="l00427"></a>00427 tickValue < hiValue; tickValue += tickWidth )<a name="l00428"></a>00428 {<a name="l00429"></a>00429 <span class="comment">//</span><a name="l00430"></a>00430 <span class="comment">// calculate position</span><a name="l00431"></a>00431 <span class="comment">//</span><a name="l00432"></a>00432 <span class="keyword">const</span> <span class="keywordtype">int</span> tickPos = r.x() + r.width()<a name="l00433"></a>00433 - int( halfSize<a name="l00434"></a>00434 * (sinArc + sign * sin((tickValue - <a class="code" href="class_qwt_double_range.html#7777cf257c812579c4891512f1b6cad0">value</a>()) * cnvFactor))<a name="l00435"></a>00435 / sinArc);<a name="l00436"></a>00436 <span class="comment">//</span><a name="l00437"></a>00437 <span class="comment">// draw vertical line</span><a name="l00438"></a>00438 <span class="comment">//</span><a name="l00439"></a>00439 <span class="keywordflow">if</span> ( (tickPos <= maxpos) && (tickPos > minpos) )<a name="l00440"></a>00440 {<a name="l00441"></a>00441 p->setPen(dark);<a name="l00442"></a>00442 p->drawLine(tickPos -1 , l1, tickPos - 1, l2 ); <a name="l00443"></a>00443 p->setPen(light);<a name="l00444"></a>00444 p->drawLine(tickPos, l1, tickPos, l2); <a name="l00445"></a>00445 }<a name="l00446"></a>00446 }<a name="l00447"></a>00447 }<a name="l00448"></a>00448 <span class="keywordflow">else</span> <span class="keywordflow">if</span> ( orientation() == Qt::Vertical )<a name="l00449"></a>00449 {<a name="l00450"></a>00450 <span class="keyword">const</span> <span class="keywordtype">double</span> halfSize = double(r.height()) * 0.5;<a name="l00451"></a>00451 <a name="l00452"></a>00452 <span class="keywordtype">int</span> l1 = r.x() + d_data->intBorder;<a name="l00453"></a>00453 <span class="keywordtype">int</span> l2 = r.x() + r.width() - d_data->intBorder - 1;<a name="l00454"></a>00454 <a name="l00455"></a>00455 <span class="keywordflow">if</span> ( d_data->intBorder > 1 )<a name="l00456"></a>00456 {<a name="l00457"></a>00457 l1--;<a name="l00458"></a>00458 l2++;<a name="l00459"></a>00459 }<a name="l00460"></a>00460 <a name="l00461"></a>00461 <span class="keyword">const</span> <span class="keywordtype">int</span> maxpos = r.y() + r.height() - 2;<a name="l00462"></a>00462 <span class="keyword">const</span> <span class="keywordtype">int</span> minpos = r.y() + 2;<a name="l00463"></a>00463 <a name="l00464"></a>00464 <span class="comment">//</span><a name="l00465"></a>00465 <span class="comment">// draw tick marks</span><a name="l00466"></a>00466 <span class="comment">//</span><a name="l00467"></a>00467 <span class="keywordflow">for</span> ( <span class="keywordtype">double</span> tickValue = ceil(loValue / tickWidth) * tickWidth;<a name="l00468"></a>00468 tickValue < hiValue; tickValue += tickWidth )<a name="l00469"></a>00469 {<a name="l00470"></a>00470 <a name="l00471"></a>00471 <span class="comment">//</span><a name="l00472"></a>00472 <span class="comment">// calculate position</span><a name="l00473"></a>00473 <span class="comment">//</span><a name="l00474"></a>00474 <span class="keyword">const</span> <span class="keywordtype">int</span> tickPos = r.y() + int( halfSize *<a name="l00475"></a>00475 (sinArc + sign * sin((tickValue - value()) * cnvFactor))<a name="l00476"></a>00476 / sinArc);<a name="l00477"></a>00477 <a name="l00478"></a>00478 <span class="comment">//</span><a name="l00479"></a>00479 <span class="comment">// draw horizontal line</span><a name="l00480"></a>00480 <span class="comment">//</span><a name="l00481"></a>00481 <span class="keywordflow">if</span> ( (tickPos <= maxpos) && (tickPos > minpos) )<a name="l00482"></a>00482 {<a name="l00483"></a>00483 p->setPen(dark);⌨️ 快捷键说明
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