contrib/include/wx/fl/antiflickpl.h

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        No names yet.
   3 // Purpose:     Contrib. demo
   4 // Author:      Aleksandras Gluchovas (@Lithuania)
   5 // Modified by:
   6 // Created:     23/10/98
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) Aleksandras Gluchovas
   9 // Licence:     wxWindows license
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 #ifndef __ANTIFLICKPL_G__
  13 #define __ANTIFLICKPL_G__
  14
  15 #ifdef __GNUG__
  16     #pragma interface "antiflickpl.h"
  17 #endif
  18
  19 #include "wx/fl/controlbar.h"
  20
  21 class cbAntiflickerPlugin : public cbPluginBase
  22 {
  23         DECLARE_DYNAMIC_CLASS( cbAntiflickerPlugin )
  24 protected:
  25         // double-buffers are shared "resource" among all instances of
  26         // antiflicker plugin within the application
  27         //
  28         // TODO:: locking should be implemented, for multithreaded GUIs
  29
  30         static wxBitmap*   mpVertBuf;
  31         static wxBitmap*   mpHorizBuf;
  32         static wxMemoryDC* mpVertBufDc;
  33         static wxMemoryDC* mpHorizBufDc;
  34
  35         static int mRefCount;
  36
  37         wxDC*  mpLRUBufDc; // last-reacently-used buffer
  38         wxRect mLRUArea;   // last-reacently-used area
  39
  40 protected:
  41         // returns NULL, if sutable buffer is not present
  42         wxDC* FindSuitableBuffer( const wxRect& forArea );
  43         wxDC* AllocNewBuffer( const wxRect& forArea );
  44         wxDC& GetWindowDC();
  45
  46         wxDC& GetClientDC();
  47 public:
  48
  49         cbAntiflickerPlugin(void);
  50
  51         cbAntiflickerPlugin( wxFrameLayout* pPanel, int paneMask = wxALL_PANES );
  52
  53         virtual ~cbAntiflickerPlugin();
  54
  55         // handlers for plugin events
  56
  57         void OnStartDrawInArea ( cbStartDrawInAreaEvent& event );
  58         void OnFinishDrawInArea( cbFinishDrawInAreaEvent& event );
  59
  60         DECLARE_EVENT_TABLE()
  61 };
  62
  63 #endif /* __ANTIFLICKPL_G__ */
  64