utils/framelayout/src/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 #include "controlbar.h"
  16
  17 class cbAntiflickerPlugin : public cbPluginBase
  18 {
  19         DECLARE_DYNAMIC_CLASS( cbAntiflickerPlugin )
  20 protected:
  21         // double-buffers are shared "resource" among all instances of
  22         // antiflicker plugin within the application
  23         //
  24         // TODO:: locking should be implemented, for multithreaded GUIs
  25
  26         static wxBitmap*   mpVertBuf;
  27         static wxBitmap*   mpHorizBuf;
  28         static wxMemoryDC* mpVertBufDc;
  29         static wxMemoryDC* mpHorizBufDc;
  30
  31         static int mRefCount;
  32
  33         wxDC*  mpLRUBufDc; // last-reacently-used buffer
  34         wxRect mLRUArea;   // last-reacently-used area
  35
  36 protected:
  37         // returns NULL, if sutable buffer is not present
  38         wxDC* FindSuitableBuffer( const wxRect& forArea );
  39         wxDC* AllocNewBuffer( const wxRect& forArea );
  40         wxDC& GetWindowDC();
  41
  42         wxDC& GetClientDC();
  43 public:
  44
  45         cbAntiflickerPlugin(void);
  46
  47         cbAntiflickerPlugin( wxFrameLayout* pPanel, int paneMask = wxALL_PANES );
  48
  49         virtual ~cbAntiflickerPlugin();
  50
  51         // handlers for plugin events
  52
  53         void OnStartDrawInArea ( cbStartDrawInAreaEvent& event );
  54         void OnFinishDrawInArea( cbFinishDrawInAreaEvent& event );
  55
  56         DECLARE_EVENT_TABLE()
  57 };
  58
  59 #endif