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