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 /*
  20  * COPYRIGHT:        See COPYING in the top level directory
  21  * PROJECT:          ReactOS kernel
  22  * PURPOSE:          GDI EngCopyBits Function
  23  * FILE:             subsys/win32k/eng/copybits.c
  24  * PROGRAMER:        Jason Filby
  25  * REVISION HISTORY:
  26  *        8/18/1999: Created
  27  */
  28
  29 #include <w32k.h>
  30
  31 #define NDEBUG
  32 #include <debug.h>
  33
  34 /*
  35  * @implemented
  36  */
  37 BOOL STDCALL
  38 EngCopyBits(SURFOBJ *Dest,
  39             SURFOBJ *Source,
  40             CLIPOBJ *Clip,
  41             XLATEOBJ *ColorTranslation,
  42             RECTL *DestRect,
  43             POINTL *SourcePoint)
  44 {
  45   BOOLEAN   ret;
  46   BYTE      clippingType;
  47   RECT_ENUM RectEnum;
  48   BOOL      EnumMore;
  49   BLTINFO   BltInfo;
  50   BITMAPOBJ *DestObj = NULL;
  51   BITMAPOBJ *SourceObj;
  52
  53   ASSERT(Dest != NULL && Source != NULL && DestRect != NULL && SourcePoint != NULL);
  54
  55   SourceObj = CONTAINING_RECORD(Source, BITMAPOBJ, SurfObj);
  56   BITMAPOBJ_LockBitmapBits(SourceObj);
  57   MouseSafetyOnDrawStart(Source, SourcePoint->x, SourcePoint->y,
  58                          (SourcePoint->x + abs(DestRect->right - DestRect->left)),
  59                          (SourcePoint->y + abs(DestRect->bottom - DestRect->top)));
  60   if (Dest != Source)
  61     {
  62     DestObj = CONTAINING_RECORD(Dest, BITMAPOBJ, SurfObj);
  63     BITMAPOBJ_LockBitmapBits(DestObj);
  64     }
  65   MouseSafetyOnDrawStart(Dest, DestRect->left, DestRect->top, DestRect->right, DestRect->bottom);
  66
  67   // FIXME: Don't punt to the driver's DrvCopyBits immediately. Instead,
  68   //        mark the copy block function to be DrvCopyBits instead of the
  69   //        GDI's copy bit function so as to remove clipping from the
  70   //        driver's responsibility
  71
  72   // If one of the surfaces isn't managed by the GDI
  73   if((Dest->iType!=STYPE_BITMAP) || (Source->iType!=STYPE_BITMAP))
  74   {
  75     // Destination surface is device managed
  76     if(Dest->iType!=STYPE_BITMAP)
  77     {
  78       /* FIXME: Eng* functions shouldn't call Drv* functions. ? */
  79       /* FIXME: Remove typecast. */
  80       if (((BITMAPOBJ*)Dest)->flHooks & HOOK_COPYBITS)
  81       {
  82         ret = GDIDEVFUNCS(Dest).CopyBits(
  83           Dest, Source, Clip, ColorTranslation, DestRect, SourcePoint);
  84
  85         MouseSafetyOnDrawEnd(Dest);
  86         if (Dest != Source)
  87           {
  88           BITMAPOBJ_UnlockBitmapBits(DestObj);
  89           }
  90         MouseSafetyOnDrawEnd(Source);
  91         BITMAPOBJ_UnlockBitmapBits(SourceObj);
  92
  93         return ret;
  94       }
  95     }
  96
  97     // Source surface is device managed
  98     if(Source->iType!=STYPE_BITMAP)
  99     {
 100       /* FIXME: Eng* functions shouldn't call Drv* functions. ? */
 101       /* FIXME: Remove typecast. */
 102       if (((BITMAPOBJ*)Source)->flHooks & HOOK_COPYBITS)
 103       {
 104         ret = GDIDEVFUNCS(Source).CopyBits(
 105           Dest, Source, Clip, ColorTranslation, DestRect, SourcePoint);
 106
 107         MouseSafetyOnDrawEnd(Dest);
 108         if (Dest != Source)
 109           {
 110           BITMAPOBJ_UnlockBitmapBits(DestObj);
 111           }
 112         MouseSafetyOnDrawEnd(Source);
 113         BITMAPOBJ_UnlockBitmapBits(SourceObj);
 114
 115         return ret;
 116       }
 117     }
 118
 119     // If CopyBits wasn't hooked, BitBlt must be
 120     ret = IntEngBitBlt(Dest, Source,
 121                        NULL, Clip, ColorTranslation, DestRect, SourcePoint,
 122                        NULL, NULL, NULL, ROP3_TO_ROP4(SRCCOPY));
 123
 124     MouseSafetyOnDrawEnd(Dest);
 125     if (Dest != Source)
 126       {
 127       BITMAPOBJ_UnlockBitmapBits(DestObj);
 128       }
 129     MouseSafetyOnDrawEnd(Source);
 130     BITMAPOBJ_UnlockBitmapBits(SourceObj);
 131
 132     return ret;
 133   }
 134
 135   // Determine clipping type
 136   if (Clip == (CLIPOBJ *) NULL)
 137   {
 138     clippingType = DC_TRIVIAL;
 139   } else {
 140     clippingType = Clip->iDComplexity;
 141   }
 142
 143   BltInfo.DestSurface = Dest;
 144   BltInfo.SourceSurface = Source;
 145   BltInfo.PatternSurface = NULL;
 146   BltInfo.XlateSourceToDest = ColorTranslation;
 147   BltInfo.XlatePatternToDest = NULL;
 148   BltInfo.Rop4 = SRCCOPY;
 149
 150   switch(clippingType)
 151     {
 152       case DC_TRIVIAL:
 153         BltInfo.DestRect = *DestRect;
 154         BltInfo.SourcePoint = *SourcePoint;
 155
 156         DibFunctionsForBitmapFormat[Dest->iBitmapFormat].DIB_BitBltSrcCopy(&BltInfo);
 157
 158         MouseSafetyOnDrawEnd(Dest);
 159         if (Dest != Source)
 160           {
 161           BITMAPOBJ_UnlockBitmapBits(DestObj);
 162           }
 163         MouseSafetyOnDrawEnd(Source);
 164         BITMAPOBJ_UnlockBitmapBits(SourceObj);
 165
 166         return(TRUE);
 167
 168       case DC_RECT:
 169         // Clip the blt to the clip rectangle
 170         EngIntersectRect(&BltInfo.DestRect, DestRect, &Clip->rclBounds);
 171
 172         BltInfo.SourcePoint.x = SourcePoint->x + BltInfo.DestRect.left - DestRect->left;
 173         BltInfo.SourcePoint.y = SourcePoint->y + BltInfo.DestRect.top  - DestRect->top;
 174
 175         DibFunctionsForBitmapFormat[Dest->iBitmapFormat].DIB_BitBltSrcCopy(&BltInfo);
 176
 177         MouseSafetyOnDrawEnd(Dest);
 178         if (Dest != Source)
 179           {
 180           BITMAPOBJ_UnlockBitmapBits(DestObj);
 181           }
 182         MouseSafetyOnDrawEnd(Source);
 183         BITMAPOBJ_UnlockBitmapBits(SourceObj);
 184
 185         return(TRUE);
 186
 187       case DC_COMPLEX:
 188
 189         CLIPOBJ_cEnumStart(Clip, FALSE, CT_RECTANGLES, CD_ANY, 0);
 190
 191         do {
 192           EnumMore = CLIPOBJ_bEnum(Clip,(ULONG) sizeof(RectEnum), (PVOID) &RectEnum);
 193
 194           if (RectEnum.c > 0)
 195           {
 196             RECTL* prclEnd = &RectEnum.arcl[RectEnum.c];
 197             RECTL* prcl    = &RectEnum.arcl[0];
 198
 199             do {
 200               EngIntersectRect(&BltInfo.DestRect, prcl, DestRect);
 201
 202               BltInfo.SourcePoint.x = SourcePoint->x + prcl->left - DestRect->left;
 203               BltInfo.SourcePoint.y = SourcePoint->y + prcl->top - DestRect->top;
 204
 205               if(!DibFunctionsForBitmapFormat[Dest->iBitmapFormat].DIB_BitBltSrcCopy(&BltInfo))
 206                 return FALSE;
 207
 208               prcl++;
 209
 210               } while (prcl < prclEnd);
 211             }
 212
 213           } while(EnumMore);
 214
 215           MouseSafetyOnDrawEnd(Dest);
 216           if (Dest != Source)
 217             {
 218             BITMAPOBJ_UnlockBitmapBits(DestObj);
 219             }
 220           MouseSafetyOnDrawEnd(Source);
 221           BITMAPOBJ_UnlockBitmapBits(SourceObj);
 222
 223           return(TRUE);
 224     }
 225
 226   MouseSafetyOnDrawEnd(Dest);
 227   if (Dest != Source)
 228     {
 229     BITMAPOBJ_UnlockBitmapBits(DestObj);
 230     }
 231   MouseSafetyOnDrawEnd(Source);
 232   BITMAPOBJ_UnlockBitmapBits(SourceObj);
 233
 234   return FALSE;
 235 }
 236
 237 /* EOF */