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 BOOL CDECL EMFDRV_StretchBlt( PHYSDEV devDst, struct bitblt_coords *dst,
  69                               PHYSDEV devSrc, struct bitblt_coords *src, DWORD rop )
  70 {
  71     BOOL ret;
  72     PEMRBITBLT pEMR;
  73     UINT emrSize;
  74     UINT bmiSize;
  75     UINT bitsSize;
  76     UINT size;
  77     BITMAP  BM;
  78     WORD nBPP = 0;
  79     LPBITMAPINFOHEADER lpBmiH;
  80     HBITMAP hBitmap = NULL;
  81     DWORD emrType;
  82
  83     if (devSrc->funcs == devDst->funcs) return FALSE;  /* can't use a metafile DC as source */
  84
  85     if (src->log_width == dst->log_width && src->log_height == dst->log_height)
  86     {
  87         emrType = EMR_BITBLT;
  88         emrSize = sizeof(EMRBITBLT);
  89     }
  90     else
  91     {
  92         emrType = EMR_STRETCHBLT;
  93         emrSize = sizeof(EMRSTRETCHBLT);
  94     }
  95
  96     hBitmap = GetCurrentObject(devSrc->hdc, OBJ_BITMAP);
  97
  98     if(sizeof(BITMAP) != GetObjectW(hBitmap, sizeof(BITMAP), &BM))
  99         return FALSE;
 100
 101     nBPP = BM.bmPlanes * BM.bmBitsPixel;
 102     if(nBPP > 8) nBPP = 24; /* FIXME Can't get 16bpp to work for some reason */
 103     bitsSize = DIB_GetDIBWidthBytes(BM.bmWidth, nBPP) * BM.bmHeight;
 104     bmiSize = sizeof(BITMAPINFOHEADER) +
 105         (nBPP <= 8 ? 1 << nBPP : 0) * sizeof(RGBQUAD);
 106
 107    size = emrSize + bmiSize + bitsSize;
 108
 109     pEMR = HeapAlloc(GetProcessHeap(), 0, size);
 110     if (!pEMR) return FALSE;
 111
 112     /* Initialize EMR */
 113     pEMR->emr.iType = emrType;
 114     pEMR->emr.nSize = size;
 115     pEMR->rclBounds.left = dst->log_x;
 116     pEMR->rclBounds.top = dst->log_y;
 117     pEMR->rclBounds.right = dst->log_x + dst->log_width - 1;
 118     pEMR->rclBounds.bottom = dst->log_y + dst->log_height - 1;
 119     pEMR->xDest = dst->log_x;
 120     pEMR->yDest = dst->log_y;
 121     pEMR->cxDest = dst->log_width;
 122     pEMR->cyDest = dst->log_height;
 123     pEMR->dwRop = rop;
 124     pEMR->xSrc = src->log_x;
 125     pEMR->ySrc = src->log_y;
 126     GetWorldTransform(devSrc->hdc, &pEMR->xformSrc);
 127     pEMR->crBkColorSrc = GetBkColor(devSrc->hdc);
 128     pEMR->iUsageSrc = DIB_RGB_COLORS;
 129     pEMR->offBmiSrc = emrSize;
 130     pEMR->offBitsSrc = emrSize + bmiSize;
 131     pEMR->cbBmiSrc = bmiSize;
 132     pEMR->cbBitsSrc = bitsSize;
 133     if (emrType == EMR_STRETCHBLT)
 134     {
 135         PEMRSTRETCHBLT pEMRStretch = (PEMRSTRETCHBLT)pEMR;
 136         pEMRStretch->cxSrc = src->log_width;
 137         pEMRStretch->cySrc = src->log_height;
 138     }
 139
 140     /* Initialize BITMAPINFO structure */
 141     lpBmiH = (LPBITMAPINFOHEADER)((BYTE*)pEMR + pEMR->offBmiSrc);
 142
 143     lpBmiH->biSize = sizeof(BITMAPINFOHEADER);
 144     lpBmiH->biWidth =  BM.bmWidth;
 145     lpBmiH->biHeight = BM.bmHeight;
 146     lpBmiH->biPlanes = BM.bmPlanes;
 147     lpBmiH->biBitCount = nBPP;
 148     /* Assume the bitmap isn't compressed and set the BI_RGB flag. */
 149     lpBmiH->biCompression = BI_RGB;
 150     lpBmiH->biSizeImage = bitsSize;
 151     lpBmiH->biYPelsPerMeter = 0;
 152     lpBmiH->biXPelsPerMeter = 0;
 153     lpBmiH->biClrUsed   = nBPP <= 8 ? 1 << nBPP : 0;
 154     /* Set biClrImportant to 0, indicating that all of the
 155        device colors are important. */
 156     lpBmiH->biClrImportant = 0;
 157
 158     /* Initialize bitmap bits */
 159     if (GetDIBits(devSrc->hdc, hBitmap, 0, (UINT)lpBmiH->biHeight,
 160                   (BYTE*)pEMR + pEMR->offBitsSrc,
 161                   (LPBITMAPINFO)lpBmiH, DIB_RGB_COLORS))
 162     {
 163         ret = EMFDRV_WriteRecord(devDst, (EMR*)pEMR);
 164         if (ret) EMFDRV_UpdateBBox(devDst, &(pEMR->rclBounds));
 165     }
 166     else
 167         ret = FALSE;
 168
 169     HeapFree( GetProcessHeap(), 0, pEMR);
 170     return ret;
 171 }
 172
 173 INT CDECL EMFDRV_StretchDIBits( PHYSDEV dev, INT xDst, INT yDst, INT widthDst,
 174                                       INT heightDst, INT xSrc, INT ySrc,
 175                                       INT widthSrc, INT heightSrc,
 176                                       const void *bits, const BITMAPINFO *info,
 177                                       UINT wUsage, DWORD dwRop )
 178 {
 179     EMRSTRETCHDIBITS *emr;
 180     BOOL ret;
 181     UINT bmi_size=0, bits_size, emr_size;
 182
 183     bits_size = DIB_GetDIBImageBytes(info->bmiHeader.biWidth,
 184                                      info->bmiHeader.biHeight,
 185                                      info->bmiHeader.biBitCount);
 186
 187     /* calculate the size of the colour table */
 188     bmi_size = bitmap_info_size(info, wUsage);
 189
 190     emr_size = sizeof (EMRSTRETCHDIBITS) + bmi_size + bits_size;
 191     emr = HeapAlloc(GetProcessHeap(), 0, emr_size );
 192     if (!emr) return 0;
 193
 194     /* write a bitmap info header (with colours) to the record */
 195     memcpy( &emr[1], info, bmi_size);
 196
 197     /* write bitmap bits to the record */
 198     memcpy ( ( (BYTE *) (&emr[1]) ) + bmi_size, bits, bits_size);
 199
 200     /* fill in the EMR header at the front of our piece of memory */
 201     emr->emr.iType = EMR_STRETCHDIBITS;
 202     emr->emr.nSize = emr_size;
 203
 204     emr->xDest     = xDst;
 205     emr->yDest     = yDst;
 206     emr->cxDest    = widthDst;
 207     emr->cyDest    = heightDst;
 208     emr->dwRop     = dwRop;
 209     emr->xSrc      = xSrc; /* FIXME: only save the piece of the bitmap needed */
 210     emr->ySrc      = ySrc;
 211
 212     emr->iUsageSrc    = wUsage;
 213     emr->offBmiSrc    = sizeof (EMRSTRETCHDIBITS);
 214     emr->cbBmiSrc     = bmi_size;
 215     emr->offBitsSrc   = emr->offBmiSrc + bmi_size;
 216     emr->cbBitsSrc    = bits_size;
 217
 218     emr->cxSrc = widthSrc;
 219     emr->cySrc = heightSrc;
 220
 221     emr->rclBounds.left   = xDst;
 222     emr->rclBounds.top    = yDst;
 223     emr->rclBounds.right  = xDst + widthDst;
 224     emr->rclBounds.bottom = yDst + heightDst;
 225
 226     /* save the record we just created */
 227     ret = EMFDRV_WriteRecord( dev, &emr->emr );
 228     if(ret)
 229         EMFDRV_UpdateBBox( dev, &emr->rclBounds );
 230
 231     HeapFree(GetProcessHeap(), 0, emr);
 232
 233     return ret ? heightSrc : GDI_ERROR;
 234 }
 235
 236 INT CDECL EMFDRV_SetDIBitsToDevice(
 237     PHYSDEV dev, INT xDst, INT yDst, DWORD width, DWORD height,
 238     INT xSrc, INT ySrc, UINT startscan, UINT lines,
 239     LPCVOID bits, const BITMAPINFO *info, UINT wUsage )
 240 {
 241     EMRSETDIBITSTODEVICE* pEMR;
 242     DWORD size, bmiSize, bitsSize;
 243
 244     bmiSize = bitmap_info_size(info, wUsage);
 245     bitsSize = DIB_GetDIBImageBytes( info->bmiHeader.biWidth,
 246                                      info->bmiHeader.biHeight,
 247                                      info->bmiHeader.biBitCount );
 248     size = sizeof(EMRSETDIBITSTODEVICE) + bmiSize + bitsSize;
 249
 250     pEMR = HeapAlloc(GetProcessHeap(), 0, size);
 251     if (!pEMR) return 0;
 252
 253     pEMR->emr.iType = EMR_SETDIBITSTODEVICE;
 254     pEMR->emr.nSize = size;
 255     pEMR->rclBounds.left = xDst;
 256     pEMR->rclBounds.top = yDst;
 257     pEMR->rclBounds.right = xDst + width - 1;
 258     pEMR->rclBounds.bottom = yDst + height - 1;
 259     pEMR->xDest = xDst;
 260     pEMR->yDest = yDst;
 261     pEMR->xSrc = xSrc;
 262     pEMR->ySrc = ySrc;
 263     pEMR->cxSrc = width;
 264     pEMR->cySrc = height;
 265     pEMR->offBmiSrc = sizeof(EMRSETDIBITSTODEVICE);
 266     pEMR->cbBmiSrc = bmiSize;
 267     pEMR->offBitsSrc = sizeof(EMRSETDIBITSTODEVICE) + bmiSize;
 268     pEMR->cbBitsSrc = bitsSize;
 269     pEMR->iUsageSrc = wUsage;
 270     pEMR->iStartScan = startscan;
 271     pEMR->cScans = lines;
 272     memcpy((BYTE*)pEMR + pEMR->offBmiSrc, info, bmiSize);
 273     memcpy((BYTE*)pEMR + pEMR->offBitsSrc, bits, bitsSize);
 274
 275     if (EMFDRV_WriteRecord(dev, (EMR*)pEMR))
 276         EMFDRV_UpdateBBox(dev, &(pEMR->rclBounds));
 277
 278     HeapFree( GetProcessHeap(), 0, pEMR);
 279     return lines;
 280 }