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 1.14 2003/05/18 17:16:17 ea 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
  30 #include <ddk/winddi.h>
  31 #include <ddk/ntddmou.h>
  32 #include "objects.h"
  33 #include "clip.h"
  34 #include "../dib/dib.h"
  35 #include <include/mouse.h>
  36 #include <include/object.h>
  37 #include <include/eng.h>
  38
  39 BOOL STDCALL
  40 EngCopyBits(SURFOBJ *Dest,
  41             SURFOBJ *Source,
  42             CLIPOBJ *Clip,
  43             XLATEOBJ *ColorTranslation,
  44             RECTL *DestRect,
  45             POINTL *SourcePoint)
  46 {
  47   BOOLEAN   ret;
  48   SURFGDI   *DestGDI, *SourceGDI;
  49   BYTE      clippingType;
  50   RECTL     rclTmp;
  51   POINTL    ptlTmp;
  52   RECT_ENUM RectEnum;
  53   BOOL      EnumMore;
  54
  55   MouseSafetyOnDrawStart(Source, SourceGDI, SourcePoint->x, SourcePoint->y,
  56                          (SourcePoint->x + abs(DestRect->right - DestRect->left)),
  57                          (SourcePoint->y + abs(DestRect->bottom - DestRect->top)));
  58   MouseSafetyOnDrawStart(Dest, DestGDI, DestRect->left, DestRect->top, DestRect->right, DestRect->bottom);
  59
  60   // FIXME: Don't punt to the driver's DrvCopyBits immediately. Instead,
  61   //        mark the copy block function to be DrvCopyBits instead of the
  62   //        GDI's copy bit function so as to remove clipping from the
  63   //        driver's responsibility
  64
  65   // If one of the surfaces isn't managed by the GDI
  66   if((Dest->iType!=STYPE_BITMAP) || (Source->iType!=STYPE_BITMAP))
  67   {
  68     // Destination surface is device managed
  69     if(Dest->iType!=STYPE_BITMAP)
  70     {
  71       DestGDI = (PSURFGDI)AccessInternalObjectFromUserObject(Dest);
  72
  73       if (DestGDI->CopyBits!=NULL)
  74       {
  75         ret = DestGDI->CopyBits(Dest, Source, Clip, ColorTranslation, DestRect, SourcePoint);
  76
  77         MouseSafetyOnDrawEnd(Source, SourceGDI);
  78         MouseSafetyOnDrawEnd(Dest, DestGDI);
  79
  80         return ret;
  81       }
  82     }
  83
  84     // Source surface is device managed
  85     if(Source->iType!=STYPE_BITMAP)
  86     {
  87       SourceGDI = (PSURFGDI)AccessInternalObjectFromUserObject(Source);
  88
  89       if (SourceGDI->CopyBits!=NULL)
  90       {
  91         ret = SourceGDI->CopyBits(Dest, Source, Clip, ColorTranslation, DestRect, SourcePoint);
  92
  93         MouseSafetyOnDrawEnd(Source, SourceGDI);
  94         MouseSafetyOnDrawEnd(Dest, DestGDI);
  95
  96         return ret;
  97       }
  98     }
  99
 100     // If CopyBits wasn't hooked, BitBlt must be
 101     ret = EngBitBlt(Dest, Source,
 102                     NULL, Clip, ColorTranslation, DestRect, SourcePoint,
 103                     NULL, NULL, NULL, 0);
 104
 105     MouseSafetyOnDrawEnd(Source, SourceGDI);
 106     MouseSafetyOnDrawEnd(Dest, DestGDI);
 107
 108     return ret;
 109   }
 110
 111   // Determine clipping type
 112   if (Clip == (CLIPOBJ *) NULL)
 113   {
 114     clippingType = DC_TRIVIAL;
 115   } else {
 116     clippingType = Clip->iDComplexity;
 117   }
 118
 119   // We only handle XO_TABLE translations at the momement
 120   if ((ColorTranslation == NULL) || (ColorTranslation->flXlate & XO_TRIVIAL) ||
 121       (ColorTranslation->flXlate & XO_TABLE))
 122   {
 123     SourceGDI = (PSURFGDI)AccessInternalObjectFromUserObject(Source);
 124     DestGDI   = (PSURFGDI)AccessInternalObjectFromUserObject(Dest);
 125
 126     switch(clippingType)
 127     {
 128       case DC_TRIVIAL:
 129         DestGDI->DIB_BitBlt(Dest, Source, DestGDI, SourceGDI, DestRect, SourcePoint, ColorTranslation);
 130
 131         MouseSafetyOnDrawEnd(Source, SourceGDI);
 132         MouseSafetyOnDrawEnd(Dest, DestGDI);
 133
 134         return(TRUE);
 135
 136       case DC_RECT:
 137         // Clip the blt to the clip rectangle
 138         EngIntersectRect(&rclTmp, DestRect, &Clip->rclBounds);
 139
 140         ptlTmp.x = SourcePoint->x + rclTmp.left - DestRect->left;
 141         ptlTmp.y = SourcePoint->y + rclTmp.top  - DestRect->top;
 142
 143         DestGDI->DIB_BitBlt(Dest, Source, DestGDI, SourceGDI, &rclTmp, &ptlTmp, ColorTranslation);
 144
 145         MouseSafetyOnDrawEnd(Source, SourceGDI);
 146         MouseSafetyOnDrawEnd(Dest, DestGDI);
 147
 148         return(TRUE);
 149
 150       case DC_COMPLEX:
 151
 152         CLIPOBJ_cEnumStart(Clip, FALSE, CT_RECTANGLES, CD_ANY, ENUM_RECT_LIMIT);
 153
 154         do {
 155           EnumMore = CLIPOBJ_bEnum(Clip,(ULONG) sizeof(RectEnum), (PVOID) &RectEnum);
 156
 157           if (RectEnum.c > 0)
 158           {
 159             RECTL* prclEnd = &RectEnum.arcl[RectEnum.c];
 160             RECTL* prcl    = &RectEnum.arcl[0];
 161
 162             do {
 163               EngIntersectRect(prcl, prcl, DestRect);
 164
 165               ptlTmp.x = SourcePoint->x + prcl->left - DestRect->left;
 166               ptlTmp.y = SourcePoint->y + prcl->top - DestRect->top;
 167
 168               if(!DestGDI->DIB_BitBlt(Dest, Source, DestGDI, SourceGDI,
 169                                       prcl, &ptlTmp, ColorTranslation)) return FALSE;
 170
 171               prcl++;
 172
 173               } while (prcl < prclEnd);
 174             }
 175
 176           } while(EnumMore);
 177
 178           MouseSafetyOnDrawEnd(Source, SourceGDI);
 179           MouseSafetyOnDrawEnd(Dest, DestGDI);
 180
 181           return(TRUE);
 182     }
 183   }
 184
 185   MouseSafetyOnDrawEnd(Source, SourceGDI);
 186   MouseSafetyOnDrawEnd(Dest, DestGDI);
 187
 188   return FALSE;
 189 }
 190 /* EOF */