📄 qwt__plot__spectrogram_8cpp-source.html
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<a name="l00449"></a>00449 QwtPlotSpectrogramImage image(rect.size(), d_data->colorMap->format());<a name="l00450"></a>00450 <a name="l00451"></a>00451 <span class="keyword">const</span> <a class="code" href="class_qwt_double_interval.html">QwtDoubleInterval</a> intensityRange = d_data->data->range();<a name="l00452"></a>00452 <span class="keywordflow">if</span> ( !intensityRange.isValid() )<a name="l00453"></a>00453 <span class="keywordflow">return</span> image;<a name="l00454"></a>00454 <a name="l00455"></a>00455 d_data->data->initRaster(area, rect.size());<a name="l00456"></a>00456 <a name="l00457"></a>00457 <span class="keywordflow">if</span> ( d_data->colorMap->format() == QwtColorMap::RGB )<a name="l00458"></a>00458 {<a name="l00459"></a>00459 <span class="keywordflow">for</span> ( <span class="keywordtype">int</span> y = rect.top(); y <= rect.bottom(); y++ )<a name="l00460"></a>00460 {<a name="l00461"></a>00461 <span class="keyword">const</span> <span class="keywordtype">double</span> ty = yyMap.invTransform(y);<a name="l00462"></a>00462 <a name="l00463"></a>00463 QRgb *line = (QRgb *)image.scanLine(y - rect.top());<a name="l00464"></a>00464 <span class="keywordflow">for</span> ( <span class="keywordtype">int</span> x = rect.left(); x <= rect.right(); x++ )<a name="l00465"></a>00465 {<a name="l00466"></a>00466 <span class="keyword">const</span> <span class="keywordtype">double</span> tx = xxMap.invTransform(x);<a name="l00467"></a>00467 <a name="l00468"></a>00468 *line++ = d_data->colorMap->rgb(intensityRange,<a name="l00469"></a>00469 d_data->data->value(tx, ty));<a name="l00470"></a>00470 }<a name="l00471"></a>00471 }<a name="l00472"></a>00472 }<a name="l00473"></a>00473 <span class="keywordflow">else</span> <span class="keywordflow">if</span> ( d_data->colorMap->format() == QwtColorMap::Indexed )<a name="l00474"></a>00474 {<a name="l00475"></a>00475 image.setColorTable(d_data->colorMap->colorTable(intensityRange));<a name="l00476"></a>00476 <a name="l00477"></a>00477 <span class="keywordflow">for</span> ( <span class="keywordtype">int</span> y = rect.top(); y <= rect.bottom(); y++ )<a name="l00478"></a>00478 {<a name="l00479"></a>00479 <span class="keyword">const</span> <span class="keywordtype">double</span> ty = yyMap.invTransform(y);<a name="l00480"></a>00480 <a name="l00481"></a>00481 <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> *line = image.scanLine(y - rect.top());<a name="l00482"></a>00482 <span class="keywordflow">for</span> ( <span class="keywordtype">int</span> x = rect.left(); x <= rect.right(); x++ )<a name="l00483"></a>00483 {<a name="l00484"></a>00484 <span class="keyword">const</span> <span class="keywordtype">double</span> tx = xxMap.invTransform(x);<a name="l00485"></a>00485 <a name="l00486"></a>00486 *line++ = d_data->colorMap->colorIndex(intensityRange,<a name="l00487"></a>00487 d_data->data->value(tx, ty));<a name="l00488"></a>00488 }<a name="l00489"></a>00489 }<a name="l00490"></a>00490 }<a name="l00491"></a>00491 <a name="l00492"></a>00492 d_data->data->discardRaster();<a name="l00493"></a>00493 <a name="l00494"></a>00494 <span class="comment">// Mirror the image in case of inverted maps</span><a name="l00495"></a>00495 <a name="l00496"></a>00496 <span class="keyword">const</span> <span class="keywordtype">bool</span> hInvert = xxMap.p1() > xxMap.p2();<a name="l00497"></a>00497 <span class="keyword">const</span> <span class="keywordtype">bool</span> vInvert = yyMap.p1() < yyMap.p2();<a name="l00498"></a>00498 <span class="keywordflow">if</span> ( hInvert || vInvert )<a name="l00499"></a>00499 {<a name="l00500"></a>00500 <span class="preprocessor">#ifdef __GNUC__</span><a name="l00501"></a>00501 <span class="preprocessor"></span><span class="preprocessor">#endif</span><a name="l00502"></a>00502 <span class="preprocessor"></span><span class="preprocessor">#if QT_VERSION < 0x040000</span><a name="l00503"></a>00503 <span class="preprocessor"></span> image = image.mirror(hInvert, vInvert);<a name="l00504"></a>00504 <span class="preprocessor">#else</span><a name="l00505"></a>00505 <span class="preprocessor"></span> image = image.mirrored(hInvert, vInvert);<a name="l00506"></a>00506 <span class="preprocessor">#endif</span><a name="l00507"></a>00507 <span class="preprocessor"></span> }<a name="l00508"></a>00508 <a name="l00509"></a>00509 <span class="keywordflow">return</span> image;<a name="l00510"></a>00510 }<a name="l00511"></a>00511 <a name="l00529"></a><a class="code" href="class_qwt_plot_spectrogram.html#41e6db9057d6c69f45f0556693e50502">00529</a> QSize <a class="code" href="class_qwt_plot_spectrogram.html#41e6db9057d6c69f45f0556693e50502">QwtPlotSpectrogram::contourRasterSize</a>(<span class="keyword">const</span> QwtDoubleRect &area,<a name="l00530"></a>00530 <span class="keyword">const</span> QRect &rect)<span class="keyword"> const</span><a name="l00531"></a>00531 <span class="keyword"></span>{<a name="l00532"></a>00532 QSize raster = rect.size() / 2;<a name="l00533"></a>00533 <a name="l00534"></a>00534 <span class="keyword">const</span> QSize <a class="code" href="class_qwt_plot_spectrogram.html#4e59ddce72db5df3d0be3986e74ab1f7">rasterHint</a> = d_data->data->rasterHint(area);<a name="l00535"></a>00535 <span class="keywordflow">if</span> ( rasterHint.isValid() )<a name="l00536"></a>00536 raster = raster.boundedTo(rasterHint);<a name="l00537"></a>00537 <a name="l00538"></a>00538 <span class="keywordflow">return</span> raster;<a name="l00539"></a>00539 }<a name="l00540"></a>00540 <a name="l00549"></a><a class="code" href="class_qwt_plot_spectrogram.html#bb0a5d6617c834016c3034e7a4e1396f">00549</a> <a class="code" href="class_qwt_raster_data.html#dc6679160a229992f0870a2b784985f3">QwtRasterData::ContourLines</a> <a class="code" href="class_qwt_plot_spectrogram.html#bb0a5d6617c834016c3034e7a4e1396f">QwtPlotSpectrogram::renderContourLines</a>(<a name="l00550"></a>00550 <span class="keyword">const</span> QwtDoubleRect &rect, <span class="keyword">const</span> QSize &raster)<span class="keyword"> const</span><a name="l00551"></a>00551 <span class="keyword"></span>{<a name="l00552"></a>00552 <span class="keywordflow">return</span> d_data->data->contourLines(rect, raster,<a name="l00553"></a>00553 d_data->contourLevels, d_data->conrecAttributes );<a name="l00554"></a>00554 }<a name="l00555"></a>00555 <a name="l00566"></a><a class="code" href="class_qwt_plot_spectrogram.html#ebd2c5ee80b3131138d4a55096962912">00566</a> <span class="keywordtype">void</span> <a class="code" href="class_qwt_plot_spectrogram.html#ebd2c5ee80b3131138d4a55096962912">QwtPlotSpectrogram::drawContourLines</a>(QPainter *painter,<a name="l00567"></a>00567 <span class="keyword">const</span> <a class="code" href="class_qwt_scale_map.html">QwtScaleMap</a> &xMap, <span class="keyword">const</span> <a class="code" href="class_qwt_scale_map.html">QwtScaleMap</a> &yMap,<a name="l00568"></a>00568 <span class="keyword">const</span> <a class="code" href="class_qwt_raster_data.html#dc6679160a229992f0870a2b784985f3">QwtRasterData::ContourLines</a> &contourLines)<span class="keyword"> const</span><a name="l00569"></a>00569 <span class="keyword"></span>{<a name="l00570"></a>00570 <span class="keyword">const</span> <a class="code" href="class_qwt_double_interval.html">QwtDoubleInterval</a> intensityRange = d_data->data->range();<a name="l00571"></a>00571 <a name="l00572"></a>00572 <span class="keyword">const</span> <span class="keywordtype">int</span> numLevels = (int)d_data->contourLevels.size();<a name="l00573"></a>00573 <span class="keywordflow">for</span> (<span class="keywordtype">int</span> l = 0; l < numLevels; l++)<a name="l00574"></a>00574 {<a name="l00575"></a>00575 <span class="keyword">const</span> <span class="keywordtype">double</span> level = d_data->contourLevels[l];<a name="l00576"></a>00576 <a name="l00577"></a>00577 QPen pen = <a class="code" href="class_qwt_plot_spectrogram.html#0b5964a44f4c0ed0139681c6873ada73">defaultContourPen</a>();<a name="l00578"></a>00578 <span class="keywordflow">if</span> ( pen.style() == Qt::NoPen )<a name="l00579"></a>00579 pen = <a class="code" href="class_qwt_plot_spectrogram.html#9c5c16fcda0422739c5393e42be5af37">contourPen</a>(level);<a name="l00580"></a>00580 <a name="l00581"></a>00581 <span class="keywordflow">if</span> ( pen.style() == Qt::NoPen )<a name="l00582"></a>00582 <span class="keywordflow">continue</span>;<a name="l00583"></a>00583 <a name="l00584"></a>00584 painter->setPen(pen);<a name="l00585"></a>00585 <a name="l00586"></a>00586 <span class="preprocessor">#if QT_VERSION >= 0x040000</span><a name="l00587"></a>00587 <span class="preprocessor"></span> <span class="keyword">const</span> QPolygonF &lines = contourLines[level];<a name="l00588"></a>00588 <span class="preprocessor">#else</span><a name="l00589"></a>00589 <span class="preprocessor"></span> <span class="keyword">const</span> QwtArray<QwtDoublePoint> &lines = contourLines[level];<a name="l00590"></a>00590 <span class="preprocessor">#endif</span><a name="l00591"></a>00591 <span class="preprocessor"></span> <span class="keywordflow">for</span> ( <span class="keywordtype">int</span> i = 0; i < (int)lines.size(); i += 2 )<a name="l00592"></a>00592 {<a name="l00593"></a>00593 <span class="keyword">const</span> QPoint p1( xMap.<a class="code" href="class_qwt_scale_map.html#1ddda39f41e137560e625a8c66c1d2e1">transform</a>(lines[i].x()),<a name="l00594"></a>00594 yMap.<a class="code" href="class_qwt_scale_map.html#1ddda39f41e137560e625a8c66c1d2e1">transform</a>(lines[i].y()) );<a name="l00595"></a>00595 <span class="keyword">const</span> QPoint p2( xMap.<a class="code" href="class_qwt_scale_map.html#1ddda39f41e137560e625a8c66c1d2e1">transform</a>(lines[i+1].x()),<a name="l00596"></a>00596 yMap.<a class="code" href="class_qwt_scale_map.html#1ddda39f41e137560e625a8c66c1d2e1">transform</a>(lines[i+1].y()) );<a name="l00597"></a>00597 <a name="l00598"></a>00598 <a class="code" href="class_qwt_painter.html#f809f23704df7e05f51222daa296ca80">QwtPainter::drawLine</a>(painter, p1, p2);<a name="l00599"></a>00599 }<a name="l00600"></a>00600 }<a name="l00601"></a>00601 }<a name="l00602"></a>00602 <a name="l00615"></a><a class="code" href="class_qwt_plot_spectrogram.html#b76245f919a08375b1f975d507e2afea">00615</a> <span class="keywordtype">void</span> <a class="code" href="class_qwt_plot_spectrogram.html#b76245f919a08375b1f975d507e2afea">QwtPlotSpectrogram::draw</a>(QPainter *painter,<a name="l00616"></a>00616 <span class="keyword">const</span> <a class="code" href="class_qwt_scale_map.html">QwtScaleMap</a> &xMap, <span class="keyword">const</span> <a class="code" href="class_qwt_scale_map.html">QwtScaleMap</a> &yMap,<a name="l00617"></a>00617 <span class="keyword">const</span> QRect &canvasRect)<span class="keyword"> const</span><a name="l00618"></a>00618 <span class="keyword"></span>{<a name="l00619"></a>00619 <span class="keywordflow">if</span> ( d_data->displayMode & ImageMode )<a name="l00620"></a>00620 <a class="code" href="class_qwt_plot_raster_item.html#81b062af415a8df33262f23768fd71ad">QwtPlotRasterItem::draw</a>(painter, xMap, yMap, canvasRect);<a name="l00621"></a>00621 <a name="l00622"></a>00622 <span class="keywordflow">if</span> ( d_data->displayMode & ContourMode )<a name="l00623"></a>00623 {<a name="l00624"></a>00624 <span class="comment">// Add some pixels at the borders, so that </span><a name="l00625"></a>00625 <span class="keyword">const</span> <span class="keywordtype">int</span> margin = 2;<a name="l00626"></a>00626 QRect rasterRect(canvasRect.x() - margin, canvasRect.y() - margin,<a name="l00627"></a>00627 canvasRect.width() + 2 * margin, canvasRect.height() + 2 * margin);<a name="l00628"></a>00628 <a name="l00629"></a>00629 QwtDoubleRect area = <a class="code" href="class_qwt_plot_item.html#913adffa4cb6914f3248b7157b9bbf33">invTransform</a>(xMap, yMap, rasterRect);<a name="l00630"></a>00630 <a name="l00631"></a>00631 <span class="keyword">const</span> QwtDoubleRect br = <a class="code" href="class_qwt_plot_spectrogram.html#fb7eb7696bacd9235c5aeece2a652659">boundingRect</a>();<a name="l00632"></a>00632 <span class="keywordflow">if</span> ( br.isValid() && br.contains(area) )<a name="l00633"></a>00633 {<a name="l00634"></a>00634 area &= br;<a name="l00635"></a>00635 rasterRect = <a class="code" href="class_qwt_plot_item.html#ce79adb7c901ef5d729dba35265096c2">transform</a>(xMap, yMap, area);<a name="l00636"></a>00636 }<a name="l00637"></a>00637 <a name="l00638"></a>00638 QSize raster = <a class="code" href="class_qwt_plot_spectrogram.html#41e6db9057d6c69f45f0556693e50502">contourRasterSize</a>(area, rasterRect);<a name="l00639"></a>00639 raster = raster.boundedTo(rasterRect.size());<a name="l00640"></a>00640 <span class="keywordflow">if</span> ( raster.isValid() )<a name="l00641"></a>00641 {<a name="l00642"></a>00642 <span class="keyword">const</span> <a class="code" href="class_qwt_raster_data.html#dc6679160a229992f0870a2b784985f3">QwtRasterData::ContourLines</a> lines =<a name="l00643"></a>00643 <a class="code" href="class_qwt_plot_spectrogram.html#bb0a5d6617c834016c3034e7a4e1396f">renderContourLines</a>(area, raster);<a name="l00644"></a>00644 <a name="l00645"></a>00645 <a class="code" href="class_qwt_plot_spectrogram.html#ebd2c5ee80b3131138d4a55096962912">drawContourLines</a>(painter, xMap, yMap, lines);<a name="l00646"></a>00646 }<a name="l00647"></a>00647 }<a name="l00648"></a>00648 }<a name="l00649"></a>00649 </pre></div><hr size="1"><address style="align: right;"><small>Generated on Mon Feb 26 21:22:38 2007 for Qwt User's Guide by <a href="http://www.doxygen.org/index.html"><img src="doxygen.png" alt="doxygen" align="middle" border="0"></a> 1.4.6 </small></address></body></html>⌨️ 快捷键说明
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