Changeset 8127 in ntrip for trunk/BNC/qwt/qwt_plot_spectrogram.h

Timestamp:

May 10, 2017, 3:20:54 PM (7 years ago)

Author:

stoecker

Message:

update qwt and qwtpolar, many QT5 fixes (unfinished)

File:

• trunk/BNC/qwt/qwt_plot_spectrogram.h (modified) (4 diffs)

trunk/BNC/qwt/qwt_plot_spectrogram.h

@@ -21 +21 @@
   \brief A plot item, which displays a spectrogram
 
-  A spectrogram displays threedimenional data, where the 3rd dimension
+  A spectrogram displays 3-dimensional data, where the 3rd dimension
   ( the intensity ) is displayed using colors. The colors are calculated
   from the values using a color map.
+
+  On multi-core systems the performance of the image composition
+  can often be improved by dividing the area into tiles - each of them
+  rendered in a different thread ( see QwtPlotItem::setRenderThreadCount() ).
 
   In ContourMode contour lines are painted for the contour levels.
@@ -29 +33 @@
   \image html spectrogram3.png
 
-  \sa QwtRasterData, QwtColorMap
+  \sa QwtRasterData, QwtColorMap, QwtPlotItem::setRenderThreadCount()
 */
 
@@ -55 +59 @@
     virtual ~QwtPlotSpectrogram();
 
-    void setRenderThreadCount( uint numThreads );
-    uint renderThreadCount() const;
-
     void setDisplayMode( DisplayMode, bool on = true );
     bool testDisplayMode( DisplayMode ) const;
@@ -71 +72 @@
     virtual QRectF pixelHint( const QRectF & ) const;
 
+    void setDefaultContourPen( const QColor &, 
+        qreal width = 0.0, Qt::PenStyle = Qt::SolidLine );
     void setDefaultContourPen( const QPen & );
     QPen defaultContourPen() const;