comparison widgets/PaneStack.h @ 19:46d8f5add6f0

* Introduce potentially-separate read and write ring buffers, so we can swap
  in a new set when something changes -- thus allowing us to respond quickly
  when something changes during playback, without losing the long buffers

* Some fixes for display & editing

     Pane *getPane(int n); // I own the returned value
     void deletePane(Pane *pane); // Deletes the pane and all its views
     int getPaneCount() const;
 
     void setCurrentPane(Pane *pane);
+    void setCurrentLayer(Pane *pane, Layer *layer);
     Pane *getCurrentPane();
 
 signals:
     void currentPaneChanged(Pane *pane);
     void currentLayerChanged(Pane *pane, Layer *layer);