1 files changed, 67 insertions, 0 deletions
diff --git a/gr-qtgui/lib/plot_waterfall.h b/gr-qtgui/lib/plot_waterfall.h
new file mode 100644
index 000000000..df2537b57
--- /dev/null
+++ b/gr-qtgui/lib/plot_waterfall.h
@@ -0,0 +1,67 @@
+#ifndef PLOT_WATERFALL_H
+#define PLOT_WATERFALL_H
+
+#include <qglobal.h>
+#include <waterfallGlobalData.h>
+#include <qwt_plot_rasteritem.h>
+
+#if QWT_VERSION >= 0x060000
+#include <qwt_point_3d.h>  // doesn't seem necessary, but is...
+#include <qwt_compat.h>
+#endif
+
+class QwtColorMap;
+
+/*!
+  \brief A plot item, which displays a waterfall spectrogram
+
+  A waterfall displays threedimenional data, where the 3rd dimension
+  ( the intensity ) is displayed using colors. The colors are calculated
+  from the values using a color map.
+
+  \sa QwtRasterData, QwtColorMap
+*/
+
+class PlotWaterfall: public QwtPlotRasterItem
+{
+public:
+    explicit PlotWaterfall(WaterfallData* data,
+			   const QString &title = QString::null);
+    virtual ~PlotWaterfall();
+
+    const WaterfallData* data()const;
+
+    void setColorMap(const QwtColorMap &);
+
+    const QwtColorMap &colorMap() const;
+
+#if QWT_VERSION < 0x060000
+    virtual QwtDoubleRect boundingRect() const;
+    virtual QSize rasterHint(const QwtDoubleRect &) const;
+#endif
+
+    virtual int rtti() const;
+
+    virtual void draw(QPainter *p,
+		      const QwtScaleMap &xMap,
+		      const QwtScaleMap &yMap,
+		      const QRect &rect) const;
+
+protected:
+#if QWT_VERSION < 0x060000
+    QImage renderImage(const QwtScaleMap &xMap,
+		       const QwtScaleMap &yMap,
+		       const QwtDoubleRect &rect) const;
+#else
+    QImage renderImage(const QwtScaleMap &xMap,
+		       const QwtScaleMap &yMap,
+		       const QRectF &rect,
+		       const QSize &size=QSize(0,0)) const;
+#endif
+
+private:
+    class PrivateData;
+    PrivateData *d_data;
+};
+
+#endif