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 EMFDRV_PatBlt( PHYSDEV dev, struct bitblt_coords *dst, DWORD rop )
  31 {
  32     EMRBITBLT emr;
  33     BOOL ret;
  34
  35     emr.emr.iType = EMR_BITBLT;
  36     emr.emr.nSize = sizeof(emr);
  37     emr.rclBounds.left = dst->log_x;
  38     emr.rclBounds.top = dst->log_y;
  39     emr.rclBounds.right = dst->log_x + dst->log_width - 1;
  40     emr.rclBounds.bottom = dst->log_y + dst->log_height - 1;
  41     emr.xDest = dst->log_x;
  42     emr.yDest = dst->log_y;
  43     emr.cxDest = dst->log_width;
  44     emr.cyDest = dst->log_height;
  45     emr.dwRop = rop;
  46     emr.xSrc = 0;
  47     emr.ySrc = 0;
  48     emr.xformSrc.eM11 = 1.0;
  49     emr.xformSrc.eM12 = 0.0;
  50     emr.xformSrc.eM21 = 0.0;
  51     emr.xformSrc.eM22 = 1.0;
  52     emr.xformSrc.eDx = 0.0;
  53     emr.xformSrc.eDy = 0.0;
  54     emr.crBkColorSrc = 0;
  55     emr.iUsageSrc = 0;
  56     emr.offBmiSrc = 0;
  57     emr.cbBmiSrc = 0;
  58     emr.offBitsSrc = 0;
  59     emr.cbBitsSrc = 0;
  60
  61     ret = EMFDRV_WriteRecord( dev, &emr.emr );
  62     if(ret)
  63         EMFDRV_UpdateBBox( dev, &emr.rclBounds );
  64     return ret;
  65 }
  66
  67 BOOL EMFDRV_StretchBlt( PHYSDEV devDst, struct bitblt_coords *dst,
  68                         PHYSDEV devSrc, struct bitblt_coords *src, DWORD rop )
  69 {
  70     BOOL ret;
  71     PEMRBITBLT pEMR;
  72     UINT emrSize;
  73     UINT bmiSize;
  74     UINT bitsSize;
  75     UINT size;
  76     BITMAP  BM;
  77     WORD nBPP = 0;
  78     LPBITMAPINFOHEADER lpBmiH;
  79     HBITMAP hBitmap = NULL;
  80     DWORD emrType;
  81
  82     if (devSrc->funcs == devDst->funcs) return FALSE;  /* can't use a metafile DC as source */
  83
  84     if (src->log_width == dst->log_width && src->log_height == dst->log_height)
  85     {
  86         emrType = EMR_BITBLT;
  87         emrSize = sizeof(EMRBITBLT);
  88     }
  89     else
  90     {
  91         emrType = EMR_STRETCHBLT;
  92         emrSize = sizeof(EMRSTRETCHBLT);
  93     }
  94
  95     hBitmap = GetCurrentObject(devSrc->hdc, OBJ_BITMAP);
  96
  97     if(sizeof(BITMAP) != GetObjectW(hBitmap, sizeof(BITMAP), &BM))
  98         return FALSE;
  99
 100     nBPP = BM.bmPlanes * BM.bmBitsPixel;
 101     if(nBPP > 8) nBPP = 24; /* FIXME Can't get 16bpp to work for some reason */
 102     bitsSize = get_dib_stride( BM.bmWidth, nBPP ) * BM.bmHeight;
 103     bmiSize = sizeof(BITMAPINFOHEADER) +
 104         (nBPP <= 8 ? 1 << nBPP : 0) * sizeof(RGBQUAD);
 105
 106    size = emrSize + bmiSize + bitsSize;
 107
 108     pEMR = HeapAlloc(GetProcessHeap(), 0, size);
 109     if (!pEMR) return FALSE;
 110
 111     /* Initialize EMR */
 112     pEMR->emr.iType = emrType;
 113     pEMR->emr.nSize = size;
 114     pEMR->rclBounds.left = dst->log_x;
 115     pEMR->rclBounds.top = dst->log_y;
 116     pEMR->rclBounds.right = dst->log_x + dst->log_width - 1;
 117     pEMR->rclBounds.bottom = dst->log_y + dst->log_height - 1;
 118     pEMR->xDest = dst->log_x;
 119     pEMR->yDest = dst->log_y;
 120     pEMR->cxDest = dst->log_width;
 121     pEMR->cyDest = dst->log_height;
 122     pEMR->dwRop = rop;
 123     pEMR->xSrc = src->log_x;
 124     pEMR->ySrc = src->log_y;
 125     GetWorldTransform(devSrc->hdc, &pEMR->xformSrc);
 126     pEMR->crBkColorSrc = GetBkColor(devSrc->hdc);
 127     pEMR->iUsageSrc = DIB_RGB_COLORS;
 128     pEMR->offBmiSrc = emrSize;
 129     pEMR->offBitsSrc = emrSize + bmiSize;
 130     pEMR->cbBmiSrc = bmiSize;
 131     pEMR->cbBitsSrc = bitsSize;
 132     if (emrType == EMR_STRETCHBLT)
 133     {
 134         PEMRSTRETCHBLT pEMRStretch = (PEMRSTRETCHBLT)pEMR;
 135         pEMRStretch->cxSrc = src->log_width;
 136         pEMRStretch->cySrc = src->log_height;
 137     }
 138
 139     /* Initialize BITMAPINFO structure */
 140     lpBmiH = (LPBITMAPINFOHEADER)((BYTE*)pEMR + pEMR->offBmiSrc);
 141
 142     lpBmiH->biSize = sizeof(BITMAPINFOHEADER);
 143     lpBmiH->biWidth =  BM.bmWidth;
 144     lpBmiH->biHeight = BM.bmHeight;
 145     lpBmiH->biPlanes = BM.bmPlanes;
 146     lpBmiH->biBitCount = nBPP;
 147     /* Assume the bitmap isn't compressed and set the BI_RGB flag. */
 148     lpBmiH->biCompression = BI_RGB;
 149     lpBmiH->biSizeImage = bitsSize;
 150     lpBmiH->biYPelsPerMeter = 0;
 151     lpBmiH->biXPelsPerMeter = 0;
 152     lpBmiH->biClrUsed   = nBPP <= 8 ? 1 << nBPP : 0;
 153     /* Set biClrImportant to 0, indicating that all of the
 154        device colors are important. */
 155     lpBmiH->biClrImportant = 0;
 156
 157     /* Initialize bitmap bits */
 158     if (GetDIBits(devSrc->hdc, hBitmap, 0, (UINT)lpBmiH->biHeight,
 159                   (BYTE*)pEMR + pEMR->offBitsSrc,
 160                   (LPBITMAPINFO)lpBmiH, DIB_RGB_COLORS))
 161     {
 162         ret = EMFDRV_WriteRecord(devDst, (EMR*)pEMR);
 163         if (ret) EMFDRV_UpdateBBox(devDst, &(pEMR->rclBounds));
 164     }
 165     else
 166         ret = FALSE;
 167
 168     HeapFree( GetProcessHeap(), 0, pEMR);
 169     return ret;
 170 }
 171
 172 INT EMFDRV_StretchDIBits( PHYSDEV dev, INT xDst, INT yDst, INT widthDst, INT heightDst,
 173                           INT xSrc, INT ySrc, INT widthSrc, INT heightSrc, const void *bits,
 174                           BITMAPINFO *info, UINT wUsage, DWORD dwRop )
 175 {
 176     EMRSTRETCHDIBITS *emr;
 177     BOOL ret;
 178     UINT bmi_size, emr_size;
 179
 180     /* calculate the size of the colour table */
 181     bmi_size = bitmap_info_size(info, wUsage);
 182
 183     emr_size = sizeof (EMRSTRETCHDIBITS) + bmi_size + info->bmiHeader.biSizeImage;
 184     emr = HeapAlloc(GetProcessHeap(), 0, emr_size );
 185     if (!emr) return 0;
 186
 187     /* write a bitmap info header (with colours) to the record */
 188     memcpy( &emr[1], info, bmi_size);
 189
 190     /* write bitmap bits to the record */
 191     memcpy ( ( (BYTE *) (&emr[1]) ) + bmi_size, bits, info->bmiHeader.biSizeImage);
 192
 193     /* fill in the EMR header at the front of our piece of memory */
 194     emr->emr.iType = EMR_STRETCHDIBITS;
 195     emr->emr.nSize = emr_size;
 196
 197     emr->xDest     = xDst;
 198     emr->yDest     = yDst;
 199     emr->cxDest    = widthDst;
 200     emr->cyDest    = heightDst;
 201     emr->dwRop     = dwRop;
 202     emr->xSrc      = xSrc; /* FIXME: only save the piece of the bitmap needed */
 203     emr->ySrc      = ySrc;
 204
 205     emr->iUsageSrc    = wUsage;
 206     emr->offBmiSrc    = sizeof (EMRSTRETCHDIBITS);
 207     emr->cbBmiSrc     = bmi_size;
 208     emr->offBitsSrc   = emr->offBmiSrc + bmi_size;
 209     emr->cbBitsSrc    = info->bmiHeader.biSizeImage;
 210
 211     emr->cxSrc = widthSrc;
 212     emr->cySrc = heightSrc;
 213
 214     emr->rclBounds.left   = xDst;
 215     emr->rclBounds.top    = yDst;
 216     emr->rclBounds.right  = xDst + widthDst;
 217     emr->rclBounds.bottom = yDst + heightDst;
 218
 219     /* save the record we just created */
 220     ret = EMFDRV_WriteRecord( dev, &emr->emr );
 221     if(ret)
 222         EMFDRV_UpdateBBox( dev, &emr->rclBounds );
 223
 224     HeapFree(GetProcessHeap(), 0, emr);
 225
 226     return ret ? heightSrc : GDI_ERROR;
 227 }
 228
 229 INT EMFDRV_SetDIBitsToDevice( PHYSDEV dev, INT xDst, INT yDst, DWORD width, DWORD height,
 230                               INT xSrc, INT ySrc, UINT startscan, UINT lines,
 231                               LPCVOID bits, BITMAPINFO *info, UINT wUsage )
 232 {
 233     EMRSETDIBITSTODEVICE* pEMR;
 234     DWORD bmiSize = bitmap_info_size(info, wUsage);
 235     DWORD size = sizeof(EMRSETDIBITSTODEVICE) + bmiSize + info->bmiHeader.biSizeImage;
 236
 237     pEMR = HeapAlloc(GetProcessHeap(), 0, size);
 238     if (!pEMR) return 0;
 239
 240     pEMR->emr.iType = EMR_SETDIBITSTODEVICE;
 241     pEMR->emr.nSize = size;
 242     pEMR->rclBounds.left = xDst;
 243     pEMR->rclBounds.top = yDst;
 244     pEMR->rclBounds.right = xDst + width - 1;
 245     pEMR->rclBounds.bottom = yDst + height - 1;
 246     pEMR->xDest = xDst;
 247     pEMR->yDest = yDst;
 248     pEMR->xSrc = xSrc;
 249     pEMR->ySrc = ySrc;
 250     pEMR->cxSrc = width;
 251     pEMR->cySrc = height;
 252     pEMR->offBmiSrc = sizeof(EMRSETDIBITSTODEVICE);
 253     pEMR->cbBmiSrc = bmiSize;
 254     pEMR->offBitsSrc = sizeof(EMRSETDIBITSTODEVICE) + bmiSize;
 255     pEMR->cbBitsSrc = info->bmiHeader.biSizeImage;
 256     pEMR->iUsageSrc = wUsage;
 257     pEMR->iStartScan = startscan;
 258     pEMR->cScans = lines;
 259     memcpy((BYTE*)pEMR + pEMR->offBmiSrc, info, bmiSize);
 260     memcpy((BYTE*)pEMR + pEMR->offBitsSrc, bits, info->bmiHeader.biSizeImage);
 261
 262     if (EMFDRV_WriteRecord(dev, (EMR*)pEMR))
 263         EMFDRV_UpdateBBox(dev, &(pEMR->rclBounds));
 264
 265     HeapFree( GetProcessHeap(), 0, pEMR);
 266     return lines;
 267 }