comparison layer/SpectrogramLayer.h @ 287:cd2492c5fe45

* Add SingleColourLayer to manage colours for layers that have a single
  predominant colour (i.e. most of them).

     virtual VerticalPosition getPreferredFrameCountPosition() const {
 	return PositionTop;
     }
 
     virtual bool isLayerOpaque() const { return true; }
-    virtual bool isLayerColourSignificant() const { return true; }
+
+    virtual ColourSignificance getLayerColourSignificance() const {
+        return ColourHasMeaningfulValue;
+    }
 
     float getYForFrequency(const View *v, float frequency) const;
     float getFrequencyForY(const View *v, int y) const;
 
     virtual int getCompletion(View *v) const;