dlls/gdi/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., 59 Temple Place, Suite 330, Boston, MA  02111-1307  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 "gdi.h"
  28 #include "enhmetafiledrv.h"
  29 #include "wine/debug.h"
  30
  31 WINE_DEFAULT_DEBUG_CHANNEL(enhmetafile);
  32
  33 BOOL EMFDRV_PatBlt( PHYSDEV dev, INT left, INT top,
  34                     INT width, INT height, DWORD rop )
  35 {
  36     EMRBITBLT emr;
  37     BOOL ret;
  38
  39     emr.emr.iType = EMR_BITBLT;
  40     emr.emr.nSize = sizeof(emr);
  41     emr.rclBounds.left = left;
  42     emr.rclBounds.top = top;
  43     emr.rclBounds.right = left + width - 1;
  44     emr.rclBounds.bottom = top + height - 1;
  45     emr.xDest = left;
  46     emr.yDest = top;
  47     emr.cxDest = width;
  48     emr.cyDest = height;
  49     emr.dwRop = rop;
  50     emr.xSrc = 0;
  51     emr.ySrc = 0;
  52     emr.xformSrc.eM11 = 1.0;
  53     emr.xformSrc.eM12 = 0.0;
  54     emr.xformSrc.eM21 = 0.0;
  55     emr.xformSrc.eM22 = 1.0;
  56     emr.xformSrc.eDx = 0.0;
  57     emr.xformSrc.eDy = 0.0;
  58     emr.crBkColorSrc = 0;
  59     emr.iUsageSrc = 0;
  60     emr.offBmiSrc = 0;
  61     emr.cbBmiSrc = 0;
  62     emr.offBitsSrc = 0;
  63     emr.cbBitsSrc = 0;
  64
  65     ret = EMFDRV_WriteRecord( dev, &emr.emr );
  66     if(ret)
  67         EMFDRV_UpdateBBox( dev, &emr.rclBounds );
  68     return ret;
  69 }
  70
  71 /* Utilitarian function used by EMFDRV_BitBlt and EMFDRV_StretchBlt */
  72
  73 static BOOL EMFDRV_BitBlockTransfer(
  74     PHYSDEV devDst, INT xDst, INT yDst, INT widthDst, INT heightDst,
  75     PHYSDEV devSrc, INT xSrc, INT ySrc, INT widthSrc, INT heightSrc, DWORD rop,
  76     DWORD emrType)
  77 {
  78     BOOL ret;
  79     PEMRBITBLT pEMR;
  80     UINT emrSize;
  81     UINT bmiSize;
  82     UINT bitsSize;
  83     UINT size;
  84     BITMAP  BM;
  85     WORD nBPP;
  86     LPBITMAPINFOHEADER lpBmiH;
  87     EMFDRV_PDEVICE* physDevSrc = (EMFDRV_PDEVICE*)devSrc;
  88     HBITMAP hBitmap = GetCurrentObject(physDevSrc->hdc, OBJ_BITMAP);
  89
  90     if (emrType == EMR_BITBLT)
  91         emrSize = sizeof(EMRBITBLT);
  92     else if (emrType == EMR_STRETCHBLT)
  93         emrSize = sizeof(EMRSTRETCHBLT);
  94     else
  95         return FALSE;
  96
  97     GetObjectW(hBitmap, sizeof(BITMAP), &BM);
  98
  99     nBPP = BM.bmPlanes * BM.bmBitsPixel;
 100     if(nBPP > 8) nBPP = 24; /* FIXME Can't get 16bpp to work for some reason */
 101
 102     bitsSize = DIB_GetDIBWidthBytes(BM.bmWidth, nBPP) * BM.bmHeight;
 103     bmiSize = sizeof(BITMAPINFOHEADER) +
 104         (nBPP <= 8 ? 1 << nBPP : 0) * sizeof(RGBQUAD);
 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     pEMR->xformSrc.eM11 = 1.0;  /** FIXME:           */
 125     pEMR->xformSrc.eM12 = 0.0;  /** Setting default  */
 126     pEMR->xformSrc.eM21 = 0.0;  /** value.           */
 127     pEMR->xformSrc.eM22 = 1.0;  /** Where should we  */
 128     pEMR->xformSrc.eDx = 0.0;   /** get that info    */
 129     pEMR->xformSrc.eDy = 0.0;   /** ????             */
 130     pEMR->crBkColorSrc = GetBkColor(physDevSrc->hdc);
 131     pEMR->iUsageSrc = DIB_RGB_COLORS;
 132     pEMR->offBmiSrc = emrSize;
 133     pEMR->cbBmiSrc = bmiSize;
 134     pEMR->offBitsSrc = emrSize + bmiSize;
 135     pEMR->cbBitsSrc = bitsSize;
 136     if (emrType == EMR_STRETCHBLT)
 137     {
 138         PEMRSTRETCHBLT pEMRStretch = (PEMRSTRETCHBLT)pEMR;
 139         pEMRStretch->cxSrc = widthSrc;
 140         pEMRStretch->cySrc = heightSrc;
 141     }
 142
 143     /* Initialize BITMAPINFO structure */
 144     lpBmiH = (LPBITMAPINFOHEADER)((BYTE*)pEMR + pEMR->offBmiSrc);
 145
 146     lpBmiH->biSize = sizeof(BITMAPINFOHEADER);
 147     lpBmiH->biWidth =  BM.bmWidth;
 148     lpBmiH->biHeight = BM.bmHeight;
 149     lpBmiH->biPlanes = BM.bmPlanes;
 150     lpBmiH->biBitCount = nBPP;
 151     /* Assume the bitmap isn't compressed and set the BI_RGB flag. */
 152     lpBmiH->biCompression = BI_RGB;
 153     lpBmiH->biSizeImage = bitsSize;
 154     lpBmiH->biYPelsPerMeter = /* 1 meter  = 39.37 inch */
 155         MulDiv(GetDeviceCaps(physDevSrc->hdc,LOGPIXELSX),3937,100);
 156     lpBmiH->biXPelsPerMeter =
 157         MulDiv(GetDeviceCaps(physDevSrc->hdc,LOGPIXELSY),3937,100);
 158     lpBmiH->biClrUsed   = nBPP <= 8 ? 1 << nBPP : 0;
 159     /* Set biClrImportant to 0, indicating that all of the
 160        device colors are important. */
 161     lpBmiH->biClrImportant = 0;
 162
 163     /* Initiliaze bitmap bits */
 164     if (GetDIBits(physDevSrc->hdc, hBitmap, 0, (UINT)lpBmiH->biHeight,
 165                   (BYTE*)pEMR + pEMR->offBitsSrc,
 166                   (LPBITMAPINFO)lpBmiH, DIB_RGB_COLORS))
 167     {
 168         ret = EMFDRV_WriteRecord(devDst, (EMR*)pEMR);
 169         if (ret) EMFDRV_UpdateBBox(devDst, &(pEMR->rclBounds));
 170     }
 171     else
 172         ret = FALSE;
 173
 174     HeapFree( GetProcessHeap(), 0, pEMR);
 175     return ret;
 176 }
 177
 178 BOOL EMFDRV_BitBlt(
 179     PHYSDEV devDst, INT xDst, INT yDst, INT width, INT height,
 180     PHYSDEV devSrc, INT xSrc, INT ySrc, DWORD rop)
 181 {
 182     return EMFDRV_BitBlockTransfer( devDst, xDst, yDst, width, height,
 183                                     devSrc, xSrc, ySrc, width, height,
 184                                     rop, EMR_BITBLT );
 185 }
 186
 187 BOOL EMFDRV_StretchBlt(
 188     PHYSDEV devDst, INT xDst, INT yDst, INT widthDst, INT heightDst,
 189     PHYSDEV devSrc, INT xSrc, INT ySrc, INT widthSrc, INT heightSrc, DWORD rop )
 190 {
 191     return EMFDRV_BitBlockTransfer( devDst, xDst, yDst, widthDst, heightDst,
 192                                     devSrc, xSrc, ySrc, widthSrc, heightSrc,
 193                                     rop, EMR_STRETCHBLT );
 194 }
 195
 196 INT EMFDRV_StretchDIBits( PHYSDEV dev, INT xDst, INT yDst, INT widthDst,
 197                                       INT heightDst, INT xSrc, INT ySrc,
 198                                       INT widthSrc, INT heightSrc,
 199                                       const void *bits, const BITMAPINFO *info,
 200                                       UINT wUsage, DWORD dwRop )
 201 {
 202     EMRSTRETCHDIBITS *emr;
 203     BOOL ret;
 204     UINT bmi_size=0, bits_size, emr_size;
 205
 206     bits_size = DIB_GetDIBImageBytes(info->bmiHeader.biWidth,
 207                                      info->bmiHeader.biHeight,
 208                                      info->bmiHeader.biBitCount);
 209
 210     /* calculate the size of the colour table */
 211     bmi_size = DIB_BitmapInfoSize(info, wUsage);
 212
 213     emr_size = sizeof (EMRSTRETCHDIBITS) + bmi_size + bits_size;
 214     emr = HeapAlloc(GetProcessHeap(), 0, emr_size );
 215     if (!emr) return 0;
 216
 217     /* write a bitmap info header (with colours) to the record */
 218     memcpy( &emr[1], info, bmi_size);
 219
 220     /* write bitmap bits to the record */
 221     memcpy ( ( (BYTE *) (&emr[1]) ) + bmi_size, bits, bits_size);
 222
 223     /* fill in the EMR header at the front of our piece of memory */
 224     emr->emr.iType = EMR_STRETCHDIBITS;
 225     emr->emr.nSize = emr_size;
 226
 227     emr->xDest     = xDst;
 228     emr->yDest     = yDst;
 229     emr->cxDest    = widthDst;
 230     emr->cyDest    = heightDst;
 231     emr->dwRop     = dwRop;
 232     emr->xSrc      = xSrc; /* FIXME: only save the piece of the bitmap needed */
 233     emr->ySrc      = ySrc;
 234
 235     emr->iUsageSrc    = wUsage;
 236     emr->offBmiSrc    = sizeof (EMRSTRETCHDIBITS);
 237     emr->cbBmiSrc     = bmi_size;
 238     emr->offBitsSrc   = emr->offBmiSrc + bmi_size;
 239     emr->cbBitsSrc    = bits_size;
 240
 241     emr->cxSrc = widthSrc;
 242     emr->cySrc = heightSrc;
 243
 244     emr->rclBounds.left   = xDst;
 245     emr->rclBounds.top    = yDst;
 246     emr->rclBounds.right  = xDst + widthDst;
 247     emr->rclBounds.bottom = yDst + heightDst;
 248
 249     /* save the record we just created */
 250     ret = EMFDRV_WriteRecord( dev, &emr->emr );
 251     if(ret)
 252         EMFDRV_UpdateBBox( dev, &emr->rclBounds );
 253
 254     HeapFree(GetProcessHeap(), 0, emr);
 255
 256     return ret;
 257 }
 258
 259 INT EMFDRV_SetDIBitsToDevice(
 260     PHYSDEV dev, INT xDst, INT yDst, DWORD width, DWORD height,
 261     INT xSrc, INT ySrc, UINT startscan, UINT lines,
 262     LPCVOID bits, const BITMAPINFO *info, UINT wUsage )
 263 {
 264     EMRSETDIBITSTODEVICE* pEMR;
 265     DWORD size, bmiSize, bitsSize;
 266
 267     bmiSize = DIB_BitmapInfoSize(info, wUsage);
 268     bitsSize = DIB_GetDIBImageBytes( info->bmiHeader.biWidth,
 269                                      info->bmiHeader.biHeight,
 270                                      info->bmiHeader.biBitCount );
 271     size = sizeof(EMRSETDIBITSTODEVICE) + bmiSize + bitsSize;
 272
 273     pEMR = HeapAlloc(GetProcessHeap(), 0, size);
 274     if (!pEMR) return 0;
 275
 276     pEMR->emr.iType = EMR_SETDIBITSTODEVICE;
 277     pEMR->emr.nSize = size;
 278     pEMR->rclBounds.left = xDst;
 279     pEMR->rclBounds.top = yDst;
 280     pEMR->rclBounds.right = xDst + width - 1;
 281     pEMR->rclBounds.bottom = yDst + height - 1;
 282     pEMR->xDest = xDst;
 283     pEMR->yDest = yDst;
 284     pEMR->xSrc = xSrc;
 285     pEMR->ySrc = ySrc;
 286     pEMR->cxSrc = width;
 287     pEMR->cySrc = height;
 288     pEMR->offBmiSrc = sizeof(EMRSETDIBITSTODEVICE);
 289     pEMR->cbBmiSrc = bmiSize;
 290     pEMR->offBitsSrc = sizeof(EMRSETDIBITSTODEVICE) + bmiSize;
 291     pEMR->cbBitsSrc = bitsSize;
 292     pEMR->iUsageSrc = wUsage;
 293     pEMR->iStartScan = startscan;
 294     pEMR->cScans = lines;
 295     memcpy((BYTE*)pEMR + pEMR->offBmiSrc, info, bmiSize);
 296     memcpy((BYTE*)pEMR + pEMR->offBitsSrc, bits, bitsSize);
 297
 298     if (EMFDRV_WriteRecord(dev, (EMR*)pEMR))
 299         EMFDRV_UpdateBBox(dev, &(pEMR->rclBounds));
 300
 301     HeapFree( GetProcessHeap(), 0, pEMR);
 302     return lines;
 303 }