prj/tech/libsrc/dispdev/wdispgdi.h

   1 ///////////////////////////////////////////////////////////////////////////////
   2 // $Source: x:/prj/tech/libsrc/dispdev/RCS/wdispgdi.h $
   3 // $Author: TOML $
   4 // $Date: 1996/11/21 10:36:59 $
   5 // $Revision: 1.7 $
   6 //
   7 // The Provider and Mode Operations for GDI.  These are really two inseperable
   8 // halves of the same object.
   9 //
  10
  11 #ifndef __WDISPGDI_H
  12 #define __WDISPGDI_H
  13
  14 class cGDIModeOps;
  15
  16 ///////////////////////////////////////////////////////////////////////////////
  17 //
  18 // CLASS: cGDIProvider
  19 //
  20 // Implements GDI based version of modeless display device operations
  21 //
  22
  23 class cGDIProvider : public cWinDisplayProvider
  24 {
  25 public:
  26     cGDIProvider(cWinDisplayDevice * pOwner);
  27     virtual ~cGDIProvider();
  28
  29 private:
  30
  31     ///////////////////////////////////
  32     //
  33     // Hooks from cWinDisplayProvider
  34     //
  35     virtual void DoGetInfo(sGrDeviceInfo *, sGrModeInfo *);
  36     virtual BOOL DoOpen(sGrModeCap *, int flags);
  37     virtual BOOL DoClose();
  38     virtual cWinDisplayModeOperations * DoSetMode(const sGrModeInfo &, int flags, sGrModeCap * pReturnModeInfo);
  39
  40     void AdjustWindow(BOOL fToMode = FALSE);
  41
  42     ///////////////
  43
  44     virtual BOOL DoProcessMessage(UINT msg, WPARAM wParam, LPARAM lParam, long * pRetVal);
  45
  46     friend class cGDIModeOps;
  47
  48     ///////////////
  49
  50     void PickPalette(BOOL fActive = TRUE);
  51     void ClearSystemPalette();
  52     void SetSystemPaletteEntries(BOOL);
  53
  54     ///////////////////////////////////
  55
  56     cGDIModeOps * const m_pGDIModeOps;
  57
  58     int m_fUsingStaticColors;
  59     int m_fStrictPalette;
  60
  61     ///////////////////////////////////
  62
  63     // Palette used to help Windows show reasonable 16-bit with 8-bit screen driver
  64     HPALETTE m_h16to8RemapPalette;
  65 };
  66
  67 ///////////////////////////////////////////////////////////////////////////////
  68 //
  69 // CLASS: cGDIModeOps
  70 //
  71 // Implements GDI based version of mode-based display device operations
  72 //
  73
  74 class cGDIModeOps : public cWinDisplayModeOperations
  75 {
  76 private:
  77     cGDIModeOps(cWinDisplayDevice * pDisplayDevice, cGDIProvider * pOwner)
  78       : cWinDisplayModeOperations(pDisplayDevice),
  79         m_pOwner(pOwner),
  80         m_hOffscreenDC(0),
  81         m_hOffscreenBitmap(0),
  82         m_hOldBitmap(0),
  83         m_hStrict8BitPalette(0),
  84         m_hMappable8BitPalette(0),
  85         m_hCurrentPalette(0)
  86     {
  87     }
  88
  89     virtual ~cGDIModeOps();
  90
  91     BOOL StartMode(const sGrModeInfo &, int flags, sGrModeCap * pReturnModeInfo);
  92
  93     //
  94     // Implementations of operations
  95     //
  96     virtual BOOL DoSetPalette(LOGPALETTE & palette, unsigned uStart, unsigned n);
  97     virtual BOOL DoLock(sGrModeCap *);
  98     virtual BOOL DoUnlock();
  99     virtual void DoFlush();
 100     virtual void DoFlushRect(int x0, int y0, int x1, int y1);
 101
 102     void UpdateDisplay();
 103
 104     BITMAPINFOHEADER    m_OffscreenInfo;
 105     HDC                 m_hOffscreenDC;
 106     HBITMAP             m_hOffscreenBitmap;
 107     HBITMAP             m_hOldBitmap;
 108
 109     HPALETTE m_hStrict8BitPalette;
 110     HPALETTE m_hMappable8BitPalette;
 111     HPALETTE m_hCurrentPalette;
 112
 113     cGDIProvider * const m_pOwner;
 114     friend class cGDIProvider;
 115 };
 116
 117 ///////////////////////////////////////////////////////////////////////////////
 118
 119 #endif /* !__WDISPGDI_H */