dlls/gdi32/enhmfdrv/bitblt.c

   1 /*
   2  * Enhanced MetaFile driver BitBlt functions
   3  *
   4  * Copyright 2002 Huw D M Davies for CodeWeavers
   5  *
   6  * This library is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Lesser General Public
   8  * License as published by the Free Software Foundation; either
   9  * version 2.1 of the License, or (at your option) any later version.
  10  *
  11  * This library is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General Public
  17  * License along with this library; if not, write to the Free Software
  18  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  19  */
  20
  21 #include <stdarg.h>
  22 #include <string.h>
  23
  24 #include "windef.h"
  25 #include "winbase.h"
  26 #include "wingdi.h"
  27 #include "enhmetafiledrv.h"
  28 #include "wine/debug.h"
  29
  30 BOOL CDECL EMFDRV_PatBlt( PHYSDEV dev, INT left, INT top,
  31                           INT width, INT height, DWORD rop )
  32 {
  33     EMRBITBLT emr;
  34     BOOL ret;
  35
  36     emr.emr.iType = EMR_BITBLT;
  37     emr.emr.nSize = sizeof(emr);
  38     emr.rclBounds.left = left;
  39     emr.rclBounds.top = top;
  40     emr.rclBounds.right = left + width - 1;
  41     emr.rclBounds.bottom = top + height - 1;
  42     emr.xDest = left;
  43     emr.yDest = top;
  44     emr.cxDest = width;
  45     emr.cyDest = height;
  46     emr.dwRop = rop;
  47     emr.xSrc = 0;
  48     emr.ySrc = 0;
  49     emr.xformSrc.eM11 = 1.0;
  50     emr.xformSrc.eM12 = 0.0;
  51     emr.xformSrc.eM21 = 0.0;
  52     emr.xformSrc.eM22 = 1.0;
  53     emr.xformSrc.eDx = 0.0;
  54     emr.xformSrc.eDy = 0.0;
  55     emr.crBkColorSrc = 0;
  56     emr.iUsageSrc = 0;
  57     emr.offBmiSrc = 0;
  58     emr.cbBmiSrc = 0;
  59     emr.offBitsSrc = 0;
  60     emr.cbBitsSrc = 0;
  61
  62     ret = EMFDRV_WriteRecord( dev, &emr.emr );
  63     if(ret)
  64         EMFDRV_UpdateBBox( dev, &emr.rclBounds );
  65     return ret;
  66 }
  67
  68 /* Utilitarian function used by EMFDRV_BitBlt and EMFDRV_StretchBlt */
  69
  70 static BOOL EMFDRV_BitBlockTransfer(
  71     PHYSDEV devDst, INT xDst, INT yDst, INT widthDst, INT heightDst,
  72     PHYSDEV devSrc, INT xSrc, INT ySrc, INT widthSrc, INT heightSrc, DWORD rop,
  73     DWORD emrType)
  74 {
  75     BOOL ret;
  76     PEMRBITBLT pEMR;
  77     UINT emrSize;
  78     UINT bmiSize;
  79     UINT bitsSize;
  80     UINT size;
  81     BITMAP  BM;
  82     WORD nBPP = 0;
  83     LPBITMAPINFOHEADER lpBmiH;
  84     EMFDRV_PDEVICE* physDevSrc = (EMFDRV_PDEVICE*)devSrc;
  85     HBITMAP hBitmap = NULL;
  86
  87     if (emrType == EMR_BITBLT)
  88         emrSize = sizeof(EMRBITBLT);
  89     else if (emrType == EMR_STRETCHBLT)
  90         emrSize = sizeof(EMRSTRETCHBLT);
  91     else
  92         return FALSE;
  93
  94     hBitmap = GetCurrentObject(physDevSrc->hdc, OBJ_BITMAP);
  95
  96     if(sizeof(BITMAP) != GetObjectW(hBitmap, sizeof(BITMAP), &BM))
  97         return FALSE;
  98
  99     nBPP = BM.bmPlanes * BM.bmBitsPixel;
 100     if(nBPP > 8) nBPP = 24; /* FIXME Can't get 16bpp to work for some reason */
 101     bitsSize = DIB_GetDIBWidthBytes(BM.bmWidth, nBPP) * BM.bmHeight;
 102     bmiSize = sizeof(BITMAPINFOHEADER) +
 103         (nBPP <= 8 ? 1 << nBPP : 0) * sizeof(RGBQUAD);
 104
 105    size = emrSize + bmiSize + bitsSize;
 106
 107     pEMR = HeapAlloc(GetProcessHeap(), 0, size);
 108     if (!pEMR) return FALSE;
 109
 110     /* Initialize EMR */
 111     pEMR->emr.iType = emrType;
 112     pEMR->emr.nSize = size;
 113     pEMR->rclBounds.left = xDst;
 114     pEMR->rclBounds.top = yDst;
 115     pEMR->rclBounds.right = xDst + widthDst - 1;
 116     pEMR->rclBounds.bottom = yDst + heightDst - 1;
 117     pEMR->xDest = xDst;
 118     pEMR->yDest = yDst;
 119     pEMR->cxDest = widthDst;
 120     pEMR->cyDest = heightDst;
 121     pEMR->dwRop = rop;
 122     pEMR->xSrc = xSrc;
 123     pEMR->ySrc = ySrc;
 124     GetWorldTransform(physDevSrc->hdc, &pEMR->xformSrc);
 125     pEMR->crBkColorSrc = GetBkColor(physDevSrc->hdc);
 126     pEMR->iUsageSrc = DIB_RGB_COLORS;
 127     pEMR->offBmiSrc = emrSize;
 128     pEMR->offBitsSrc = emrSize + bmiSize;
 129     pEMR->cbBmiSrc = bmiSize;
 130     pEMR->cbBitsSrc = bitsSize;
 131     if (emrType == EMR_STRETCHBLT)
 132     {
 133         PEMRSTRETCHBLT pEMRStretch = (PEMRSTRETCHBLT)pEMR;
 134         pEMRStretch->cxSrc = widthSrc;
 135         pEMRStretch->cySrc = heightSrc;
 136     }
 137
 138     /* Initialize BITMAPINFO structure */
 139     lpBmiH = (LPBITMAPINFOHEADER)((BYTE*)pEMR + pEMR->offBmiSrc);
 140
 141     lpBmiH->biSize = sizeof(BITMAPINFOHEADER);
 142     lpBmiH->biWidth =  BM.bmWidth;
 143     lpBmiH->biHeight = BM.bmHeight;
 144     lpBmiH->biPlanes = BM.bmPlanes;
 145     lpBmiH->biBitCount = nBPP;
 146     /* Assume the bitmap isn't compressed and set the BI_RGB flag. */
 147     lpBmiH->biCompression = BI_RGB;
 148     lpBmiH->biSizeImage = bitsSize;
 149     lpBmiH->biYPelsPerMeter = 0;
 150     lpBmiH->biXPelsPerMeter = 0;
 151     lpBmiH->biClrUsed   = nBPP <= 8 ? 1 << nBPP : 0;
 152     /* Set biClrImportant to 0, indicating that all of the
 153        device colors are important. */
 154     lpBmiH->biClrImportant = 0;
 155
 156     /* Initialize bitmap bits */
 157     if (GetDIBits(physDevSrc->hdc, hBitmap, 0, (UINT)lpBmiH->biHeight,
 158                   (BYTE*)pEMR + pEMR->offBitsSrc,
 159                   (LPBITMAPINFO)lpBmiH, DIB_RGB_COLORS))
 160     {
 161         ret = EMFDRV_WriteRecord(devDst, (EMR*)pEMR);
 162         if (ret) EMFDRV_UpdateBBox(devDst, &(pEMR->rclBounds));
 163     }
 164     else
 165         ret = FALSE;
 166
 167     HeapFree( GetProcessHeap(), 0, pEMR);
 168     return ret;
 169 }
 170
 171 BOOL CDECL EMFDRV_BitBlt(
 172     PHYSDEV devDst, INT xDst, INT yDst, INT width, INT height,
 173     PHYSDEV devSrc, INT xSrc, INT ySrc, DWORD rop)
 174 {
 175     return EMFDRV_BitBlockTransfer( devDst, xDst, yDst, width, height,
 176                                     devSrc, xSrc, ySrc, width, height,
 177                                     rop, EMR_BITBLT );
 178 }
 179
 180 BOOL CDECL EMFDRV_StretchBlt(
 181     PHYSDEV devDst, INT xDst, INT yDst, INT widthDst, INT heightDst,
 182     PHYSDEV devSrc, INT xSrc, INT ySrc, INT widthSrc, INT heightSrc, DWORD rop )
 183 {
 184     return EMFDRV_BitBlockTransfer( devDst, xDst, yDst, widthDst, heightDst,
 185                                     devSrc, xSrc, ySrc, widthSrc, heightSrc,
 186                                     rop, EMR_STRETCHBLT );
 187 }
 188
 189 INT CDECL EMFDRV_StretchDIBits( PHYSDEV dev, INT xDst, INT yDst, INT widthDst,
 190                                       INT heightDst, INT xSrc, INT ySrc,
 191                                       INT widthSrc, INT heightSrc,
 192                                       const void *bits, const BITMAPINFO *info,
 193                                       UINT wUsage, DWORD dwRop )
 194 {
 195     EMRSTRETCHDIBITS *emr;
 196     BOOL ret;
 197     UINT bmi_size=0, bits_size, emr_size;
 198
 199     bits_size = DIB_GetDIBImageBytes(info->bmiHeader.biWidth,
 200                                      info->bmiHeader.biHeight,
 201                                      info->bmiHeader.biBitCount);
 202
 203     /* calculate the size of the colour table */
 204     bmi_size = bitmap_info_size(info, wUsage);
 205
 206     emr_size = sizeof (EMRSTRETCHDIBITS) + bmi_size + bits_size;
 207     emr = HeapAlloc(GetProcessHeap(), 0, emr_size );
 208     if (!emr) return 0;
 209
 210     /* write a bitmap info header (with colours) to the record */
 211     memcpy( &emr[1], info, bmi_size);
 212
 213     /* write bitmap bits to the record */
 214     memcpy ( ( (BYTE *) (&emr[1]) ) + bmi_size, bits, bits_size);
 215
 216     /* fill in the EMR header at the front of our piece of memory */
 217     emr->emr.iType = EMR_STRETCHDIBITS;
 218     emr->emr.nSize = emr_size;
 219
 220     emr->xDest     = xDst;
 221     emr->yDest     = yDst;
 222     emr->cxDest    = widthDst;
 223     emr->cyDest    = heightDst;
 224     emr->dwRop     = dwRop;
 225     emr->xSrc      = xSrc; /* FIXME: only save the piece of the bitmap needed */
 226     emr->ySrc      = ySrc;
 227
 228     emr->iUsageSrc    = wUsage;
 229     emr->offBmiSrc    = sizeof (EMRSTRETCHDIBITS);
 230     emr->cbBmiSrc     = bmi_size;
 231     emr->offBitsSrc   = emr->offBmiSrc + bmi_size;
 232     emr->cbBitsSrc    = bits_size;
 233
 234     emr->cxSrc = widthSrc;
 235     emr->cySrc = heightSrc;
 236
 237     emr->rclBounds.left   = xDst;
 238     emr->rclBounds.top    = yDst;
 239     emr->rclBounds.right  = xDst + widthDst;
 240     emr->rclBounds.bottom = yDst + heightDst;
 241
 242     /* save the record we just created */
 243     ret = EMFDRV_WriteRecord( dev, &emr->emr );
 244     if(ret)
 245         EMFDRV_UpdateBBox( dev, &emr->rclBounds );
 246
 247     HeapFree(GetProcessHeap(), 0, emr);
 248
 249     return ret ? heightSrc : GDI_ERROR;
 250 }
 251
 252 INT CDECL EMFDRV_SetDIBitsToDevice(
 253     PHYSDEV dev, INT xDst, INT yDst, DWORD width, DWORD height,
 254     INT xSrc, INT ySrc, UINT startscan, UINT lines,
 255     LPCVOID bits, const BITMAPINFO *info, UINT wUsage )
 256 {
 257     EMRSETDIBITSTODEVICE* pEMR;
 258     DWORD size, bmiSize, bitsSize;
 259
 260     bmiSize = bitmap_info_size(info, wUsage);
 261     bitsSize = DIB_GetDIBImageBytes( info->bmiHeader.biWidth,
 262                                      info->bmiHeader.biHeight,
 263                                      info->bmiHeader.biBitCount );
 264     size = sizeof(EMRSETDIBITSTODEVICE) + bmiSize + bitsSize;
 265
 266     pEMR = HeapAlloc(GetProcessHeap(), 0, size);
 267     if (!pEMR) return 0;
 268
 269     pEMR->emr.iType = EMR_SETDIBITSTODEVICE;
 270     pEMR->emr.nSize = size;
 271     pEMR->rclBounds.left = xDst;
 272     pEMR->rclBounds.top = yDst;
 273     pEMR->rclBounds.right = xDst + width - 1;
 274     pEMR->rclBounds.bottom = yDst + height - 1;
 275     pEMR->xDest = xDst;
 276     pEMR->yDest = yDst;
 277     pEMR->xSrc = xSrc;
 278     pEMR->ySrc = ySrc;
 279     pEMR->cxSrc = width;
 280     pEMR->cySrc = height;
 281     pEMR->offBmiSrc = sizeof(EMRSETDIBITSTODEVICE);
 282     pEMR->cbBmiSrc = bmiSize;
 283     pEMR->offBitsSrc = sizeof(EMRSETDIBITSTODEVICE) + bmiSize;
 284     pEMR->cbBitsSrc = bitsSize;
 285     pEMR->iUsageSrc = wUsage;
 286     pEMR->iStartScan = startscan;
 287     pEMR->cScans = lines;
 288     memcpy((BYTE*)pEMR + pEMR->offBmiSrc, info, bmiSize);
 289     memcpy((BYTE*)pEMR + pEMR->offBitsSrc, bits, bitsSize);
 290
 291     if (EMFDRV_WriteRecord(dev, (EMR*)pEMR))
 292         EMFDRV_UpdateBBox(dev, &(pEMR->rclBounds));
 293
 294     HeapFree( GetProcessHeap(), 0, pEMR);
 295     return lines;
 296 }