BackedPanel.h

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//
//  BackedPanel.h
//  Audacity
//
//  Created by Paul Licameli on 5/7/16.
//
//
 
#ifndef __AUDACITY_BACKED_PANEL__
#define __AUDACITY_BACKED_PANEL__
 
#include <wx/dcmemory.h> // member variable
#include "wxPanelWrapper.h" // to inherit
 
 
class AUDACITY_DLL_API BackedPanel /* not final */ : public wxPanelWrapper {
public:
   BackedPanel(wxWindow * parent, wxWindowID id,
               const wxPoint & pos,
               const wxSize & size,
               long style);
 
   ~BackedPanel();
 
   wxDC &GetBackingDC();
   wxDC &GetBackingDCForRepaint();
   void ResizeBacking();
   void RepairBitmap(wxDC &dc, wxCoord x, wxCoord y, wxCoord width, wxCoord height);
   void DisplayBitmap(wxDC &dc);
   void OnSize(wxSizeEvent & event);
 
private:
   std::unique_ptr<wxBitmap> mBacking;
   wxMemoryDC mBackingDC;
   bool mResizeBacking {};
   
   DECLARE_EVENT_TABLE()
};
 
 
#endif