reactos/subsys/win32k/eng/copybits.c

   1 /*
   2  *  ReactOS W32 Subsystem
   3  *  Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003 ReactOS Team
   4  *
   5  *  This program is free software; you can redistribute it and/or modify
   6  *  it under the terms of the GNU General Public License as published by
   7  *  the Free Software Foundation; either version 2 of the License, or
   8  *  (at your option) any later version.
   9  *
  10  *  This program is distributed in the hope that it will be useful,
  11  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  *  GNU General Public License for more details.
  14  *
  15  *  You should have received a copy of the GNU General Public License
  16  *  along with this program; if not, write to the Free Software
  17  *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  18  */
  19 /* $Id: copybits.c,v 1.27 2004/12/14 04:22:00 royce Exp $
  20  *
  21  * COPYRIGHT:        See COPYING in the top level directory
  22  * PROJECT:          ReactOS kernel
  23  * PURPOSE:          GDI EngCopyBits Function
  24  * FILE:             subsys/win32k/eng/copybits.c
  25  * PROGRAMER:        Jason Filby
  26  * REVISION HISTORY:
  27  *        8/18/1999: Created
  28  */
  29 #include <w32k.h>
  30
  31 /*
  32  * @implemented
  33  */
  34 BOOL STDCALL
  35 EngCopyBits(SURFOBJ *Dest,
  36             SURFOBJ *Source,
  37             CLIPOBJ *Clip,
  38             XLATEOBJ *ColorTranslation,
  39             RECTL *DestRect,
  40             POINTL *SourcePoint)
  41 {
  42   BOOLEAN   ret;
  43   BYTE      clippingType;
  44   RECT_ENUM RectEnum;
  45   BOOL      EnumMore;
  46   BLTINFO   BltInfo;
  47
  48   ASSERT(Dest != NULL && Source != NULL && DestRect != NULL && SourcePoint != NULL);
  49
  50   MouseSafetyOnDrawStart(Source, SourcePoint->x, SourcePoint->y,
  51                          (SourcePoint->x + abs(DestRect->right - DestRect->left)),
  52                          (SourcePoint->y + abs(DestRect->bottom - DestRect->top)));
  53   MouseSafetyOnDrawStart(Dest, DestRect->left, DestRect->top, DestRect->right, DestRect->bottom);
  54
  55   // FIXME: Don't punt to the driver's DrvCopyBits immediately. Instead,
  56   //        mark the copy block function to be DrvCopyBits instead of the
  57   //        GDI's copy bit function so as to remove clipping from the
  58   //        driver's responsibility
  59
  60   // If one of the surfaces isn't managed by the GDI
  61   if((Dest->iType!=STYPE_BITMAP) || (Source->iType!=STYPE_BITMAP))
  62   {
  63     // Destination surface is device managed
  64     if(Dest->iType!=STYPE_BITMAP)
  65     {
  66       /* FIXME: Eng* functions shouldn't call Drv* functions. ? */
  67       /* FIXME: Remove typecast. */
  68       if (((BITMAPOBJ*)Dest)->flHooks & HOOK_COPYBITS)
  69       {
  70         ret = GDIDEVFUNCS(Dest).CopyBits(
  71           Dest, Source, Clip, ColorTranslation, DestRect, SourcePoint);
  72
  73         MouseSafetyOnDrawEnd(Dest);
  74         MouseSafetyOnDrawEnd(Source);
  75
  76         return ret;
  77       }
  78     }
  79
  80     // Source surface is device managed
  81     if(Source->iType!=STYPE_BITMAP)
  82     {
  83       /* FIXME: Eng* functions shouldn't call Drv* functions. ? */
  84       /* FIXME: Remove typecast. */
  85       if (((BITMAPOBJ*)Source)->flHooks & HOOK_COPYBITS)
  86       {
  87         ret = GDIDEVFUNCS(Source).CopyBits(
  88           Dest, Source, Clip, ColorTranslation, DestRect, SourcePoint);
  89
  90         MouseSafetyOnDrawEnd(Dest);
  91         MouseSafetyOnDrawEnd(Source);
  92
  93         return ret;
  94       }
  95     }
  96
  97     // If CopyBits wasn't hooked, BitBlt must be
  98     /* FIXME: Remove the typecast! */
  99     ret = IntEngBitBlt((BITMAPOBJ*)Dest, (BITMAPOBJ*)Source,
 100                        NULL, Clip, ColorTranslation, DestRect, SourcePoint,
 101                        NULL, NULL, NULL, 0);
 102
 103     MouseSafetyOnDrawEnd(Dest);
 104     MouseSafetyOnDrawEnd(Source);
 105
 106     return ret;
 107   }
 108
 109   // Determine clipping type
 110   if (Clip == (CLIPOBJ *) NULL)
 111   {
 112     clippingType = DC_TRIVIAL;
 113   } else {
 114     clippingType = Clip->iDComplexity;
 115   }
 116
 117   BltInfo.DestSurface = Dest;
 118   BltInfo.SourceSurface = Source;
 119   BltInfo.PatternSurface = NULL;
 120   BltInfo.XlateSourceToDest = ColorTranslation;
 121   BltInfo.XlatePatternToDest = NULL;
 122   BltInfo.Rop4 = SRCCOPY;
 123
 124   switch(clippingType)
 125     {
 126       case DC_TRIVIAL:
 127         BltInfo.DestRect = *DestRect;
 128         BltInfo.SourcePoint = *SourcePoint;
 129
 130         DibFunctionsForBitmapFormat[Dest->iBitmapFormat].DIB_BitBltSrcCopy(&BltInfo);
 131
 132         MouseSafetyOnDrawEnd(Dest);
 133         MouseSafetyOnDrawEnd(Source);
 134
 135         return(TRUE);
 136
 137       case DC_RECT:
 138         // Clip the blt to the clip rectangle
 139         EngIntersectRect(&BltInfo.DestRect, DestRect, &Clip->rclBounds);
 140
 141         BltInfo.SourcePoint.x = SourcePoint->x + BltInfo.DestRect.left - DestRect->left;
 142         BltInfo.SourcePoint.y = SourcePoint->y + BltInfo.DestRect.top  - DestRect->top;
 143
 144         DibFunctionsForBitmapFormat[Dest->iBitmapFormat].DIB_BitBltSrcCopy(&BltInfo);
 145
 146         MouseSafetyOnDrawEnd(Dest);
 147         MouseSafetyOnDrawEnd(Source);
 148
 149         return(TRUE);
 150
 151       case DC_COMPLEX:
 152
 153         CLIPOBJ_cEnumStart(Clip, FALSE, CT_RECTANGLES, CD_ANY, 0);
 154
 155         do {
 156           EnumMore = CLIPOBJ_bEnum(Clip,(ULONG) sizeof(RectEnum), (PVOID) &RectEnum);
 157
 158           if (RectEnum.c > 0)
 159           {
 160             RECTL* prclEnd = &RectEnum.arcl[RectEnum.c];
 161             RECTL* prcl    = &RectEnum.arcl[0];
 162
 163             do {
 164               EngIntersectRect(&BltInfo.DestRect, prcl, DestRect);
 165
 166               BltInfo.SourcePoint.x = SourcePoint->x + prcl->left - DestRect->left;
 167               BltInfo.SourcePoint.y = SourcePoint->y + prcl->top - DestRect->top;
 168
 169               if(!DibFunctionsForBitmapFormat[Dest->iBitmapFormat].DIB_BitBltSrcCopy(&BltInfo))
 170                 return FALSE;
 171
 172               prcl++;
 173
 174               } while (prcl < prclEnd);
 175             }
 176
 177           } while(EnumMore);
 178
 179           MouseSafetyOnDrawEnd(Dest);
 180           MouseSafetyOnDrawEnd(Source);
 181
 182           return(TRUE);
 183     }
 184
 185   MouseSafetyOnDrawEnd(Dest);
 186   MouseSafetyOnDrawEnd(Source);
 187
 188   return FALSE;
 189 }
 190
 191 /* EOF */