dlls/gdi32/enhmfdrv/objects.c

   1 /*
   2  * Enhanced MetaFile objects
   3  *
   4  * Copyright 1999 Huw D M Davies
   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 <stdlib.h>
  22 #include <stdio.h>
  23 #include <string.h>
  24
  25 #include "enhmfdrv/enhmetafiledrv.h"
  26 #include "gdi_private.h"
  27 #include "wine/debug.h"
  28
  29 WINE_DEFAULT_DEBUG_CHANNEL(enhmetafile);
  30
  31
  32 /******************************************************************
  33  *         EMFDRV_AddHandle
  34  */
  35 static UINT EMFDRV_AddHandle( PHYSDEV dev, HGDIOBJ obj )
  36 {
  37     EMFDRV_PDEVICE *physDev = (EMFDRV_PDEVICE *)dev;
  38     UINT index;
  39
  40     for(index = 0; index < physDev->handles_size; index++)
  41         if(physDev->handles[index] == 0) break;
  42     if(index == physDev->handles_size) {
  43         physDev->handles_size += HANDLE_LIST_INC;
  44         physDev->handles = HeapReAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY,
  45                                        physDev->handles,
  46                                        physDev->handles_size * sizeof(physDev->handles[0]));
  47     }
  48     physDev->handles[index] = obj;
  49
  50     physDev->cur_handles++;
  51     if(physDev->cur_handles > physDev->emh->nHandles)
  52         physDev->emh->nHandles++;
  53
  54     return index + 1; /* index 0 is reserved for the hmf, so we increment everything by 1 */
  55 }
  56
  57 /******************************************************************
  58  *         EMFDRV_FindObject
  59  */
  60 static UINT EMFDRV_FindObject( PHYSDEV dev, HGDIOBJ obj )
  61 {
  62     EMFDRV_PDEVICE *physDev = (EMFDRV_PDEVICE*) dev;
  63     UINT index;
  64
  65     for(index = 0; index < physDev->handles_size; index++)
  66         if(physDev->handles[index] == obj) break;
  67
  68     if(index == physDev->handles_size) return 0;
  69
  70     return index + 1;
  71 }
  72
  73
  74 /******************************************************************
  75  *         EMFDRV_DeleteObject
  76  */
  77 BOOL EMFDRV_DeleteObject( PHYSDEV dev, HGDIOBJ obj )
  78 {
  79     EMRDELETEOBJECT emr;
  80     EMFDRV_PDEVICE *physDev = (EMFDRV_PDEVICE*) dev;
  81     UINT index;
  82     BOOL ret = TRUE;
  83
  84     if(!(index = EMFDRV_FindObject(dev, obj))) return 0;
  85
  86     emr.emr.iType = EMR_DELETEOBJECT;
  87     emr.emr.nSize = sizeof(emr);
  88     emr.ihObject = index;
  89
  90     if(!EMFDRV_WriteRecord( dev, &emr.emr ))
  91         ret = FALSE;
  92
  93     physDev->handles[index - 1] = 0;
  94     physDev->cur_handles--;
  95     return ret;
  96 }
  97
  98
  99 /***********************************************************************
 100  *           EMFDRV_SelectBitmap
 101  */
 102 HBITMAP EMFDRV_SelectBitmap( PHYSDEV dev, HBITMAP hbitmap )
 103 {
 104     return 0;
 105 }
 106
 107
 108 /***********************************************************************
 109  *           EMFDRV_CreateBrushIndirect
 110  */
 111 DWORD EMFDRV_CreateBrushIndirect( PHYSDEV dev, HBRUSH hBrush )
 112 {
 113     DWORD index = 0;
 114     LOGBRUSH logbrush;
 115
 116     if (!GetObjectA( hBrush, sizeof(logbrush), &logbrush )) return 0;
 117
 118     switch (logbrush.lbStyle) {
 119     case BS_SOLID:
 120     case BS_HATCHED:
 121     case BS_NULL:
 122       {
 123         EMRCREATEBRUSHINDIRECT emr;
 124         emr.emr.iType = EMR_CREATEBRUSHINDIRECT;
 125         emr.emr.nSize = sizeof(emr);
 126         emr.ihBrush = index = EMFDRV_AddHandle( dev, hBrush );
 127         emr.lb.lbStyle = logbrush.lbStyle;
 128         emr.lb.lbColor = logbrush.lbColor;
 129         emr.lb.lbHatch = logbrush.lbHatch;
 130
 131         if(!EMFDRV_WriteRecord( dev, &emr.emr ))
 132             index = 0;
 133       }
 134       break;
 135     case BS_DIBPATTERN:
 136       {
 137         EMRCREATEDIBPATTERNBRUSHPT *emr;
 138         DWORD bmSize, biSize, size;
 139         BITMAPINFO *info = GlobalLock( (HGLOBAL)logbrush.lbHatch );
 140
 141         if (info->bmiHeader.biCompression)
 142             bmSize = info->bmiHeader.biSizeImage;
 143         else
 144             bmSize = get_dib_image_size( info );
 145         biSize = bitmap_info_size(info, LOWORD(logbrush.lbColor));
 146         size = sizeof(EMRCREATEDIBPATTERNBRUSHPT) + biSize + bmSize;
 147         emr = HeapAlloc( GetProcessHeap(), 0, size );
 148         if(!emr) break;
 149         emr->emr.iType = EMR_CREATEDIBPATTERNBRUSHPT;
 150         emr->emr.nSize = size;
 151         emr->ihBrush = index = EMFDRV_AddHandle( dev, hBrush );
 152         emr->iUsage = LOWORD(logbrush.lbColor);
 153         emr->offBmi = sizeof(EMRCREATEDIBPATTERNBRUSHPT);
 154         emr->cbBmi = biSize;
 155         emr->offBits = sizeof(EMRCREATEDIBPATTERNBRUSHPT) + biSize;
 156         emr->cbBits = bmSize;
 157         memcpy((char *)emr + sizeof(EMRCREATEDIBPATTERNBRUSHPT), info,
 158                biSize + bmSize );
 159
 160         if(!EMFDRV_WriteRecord( dev, &emr->emr ))
 161             index = 0;
 162         HeapFree( GetProcessHeap(), 0, emr );
 163         GlobalUnlock( (HGLOBAL)logbrush.lbHatch );
 164       }
 165       break;
 166
 167     case BS_PATTERN:
 168       {
 169         EMRCREATEDIBPATTERNBRUSHPT *emr;
 170         char buffer[FIELD_OFFSET( BITMAPINFO, bmiColors[256] )];
 171         BITMAPINFO *dst_info, *src_info = (BITMAPINFO *)buffer;
 172         struct gdi_image_bits bits;
 173         DWORD size;
 174
 175         if (!get_bitmap_image( (HANDLE)logbrush.lbHatch, src_info, &bits )) break;
 176         if (src_info->bmiHeader.biBitCount != 1)
 177         {
 178             FIXME("Trying to create a color pattern brush\n");
 179             if (bits.free) bits.free( &bits );
 180             break;
 181         }
 182
 183         /* FIXME: There is an extra DWORD written by native before the BMI.
 184          *        Not sure what its meant to contain.
 185          */
 186         size = sizeof(EMRCREATEDIBPATTERNBRUSHPT) + sizeof(DWORD) +
 187             sizeof(BITMAPINFOHEADER) + src_info->bmiHeader.biSizeImage;
 188
 189         emr = HeapAlloc( GetProcessHeap(), 0, size );
 190         if(!emr)
 191         {
 192             if (bits.free) bits.free( &bits );
 193             break;
 194         }
 195
 196         dst_info = (BITMAPINFO *)((LPBYTE)(emr + 1) + sizeof(DWORD));
 197         dst_info->bmiHeader = src_info->bmiHeader;
 198         memcpy( &dst_info->bmiHeader + 1, bits.ptr, dst_info->bmiHeader.biSizeImage );
 199         if (bits.free) bits.free( &bits );
 200
 201         emr->emr.iType = EMR_CREATEMONOBRUSH;
 202         emr->emr.nSize = size;
 203         emr->ihBrush = index = EMFDRV_AddHandle( dev, hBrush );
 204         /* Presumably to reduce the size of the written EMF, MS supports an
 205          * undocumented iUsage value of 2, indicating a mono bitmap without the
 206          * 8 byte 2 entry black/white palette. Stupidly, they could have saved
 207          * over 20 bytes more by also ignoring the BITMAPINFO fields that are
 208          * irrelevant/constant for monochrome bitmaps.
 209          * FIXME: It may be that the DIB functions themselves accept this value.
 210          */
 211         emr->iUsage = DIB_PAL_MONO;
 212         emr->offBmi = (LPBYTE)dst_info - (LPBYTE)emr;
 213         emr->cbBmi = sizeof( BITMAPINFOHEADER );
 214         emr->offBits = emr->offBmi + emr->cbBmi;
 215         emr->cbBits = dst_info->bmiHeader.biSizeImage;
 216
 217         if(!EMFDRV_WriteRecord( dev, &emr->emr ))
 218             index = 0;
 219         HeapFree( GetProcessHeap(), 0, emr );
 220       }
 221       break;
 222
 223     default:
 224         FIXME("Unknown style %x\n", logbrush.lbStyle);
 225         break;
 226     }
 227     return index;
 228 }
 229
 230
 231 /***********************************************************************
 232  *           EMFDRV_SelectBrush
 233  */
 234 HBRUSH EMFDRV_SelectBrush(PHYSDEV dev, HBRUSH hBrush )
 235 {
 236     EMFDRV_PDEVICE *physDev = (EMFDRV_PDEVICE*)dev;
 237     EMRSELECTOBJECT emr;
 238     DWORD index;
 239     int i;
 240
 241     if (physDev->restoring) return hBrush;  /* don't output SelectObject records during RestoreDC */
 242
 243     /* If the object is a stock brush object, do not need to create it.
 244      * See definitions in  wingdi.h for range of stock brushes.
 245      * We do however have to handle setting the higher order bit to
 246      * designate that this is a stock object.
 247      */
 248     for (i = WHITE_BRUSH; i <= DC_BRUSH; i++)
 249     {
 250         if (hBrush == GetStockObject(i))
 251         {
 252             index = i | 0x80000000;
 253             goto found;
 254         }
 255     }
 256     if((index = EMFDRV_FindObject(dev, hBrush)) != 0)
 257         goto found;
 258
 259     if (!(index = EMFDRV_CreateBrushIndirect(dev, hBrush ))) return 0;
 260     GDI_hdc_using_object(hBrush, dev->hdc);
 261
 262  found:
 263     emr.emr.iType = EMR_SELECTOBJECT;
 264     emr.emr.nSize = sizeof(emr);
 265     emr.ihObject = index;
 266     return EMFDRV_WriteRecord( dev, &emr.emr ) ? hBrush : 0;
 267 }
 268
 269
 270 /******************************************************************
 271  *         EMFDRV_CreateFontIndirect
 272  */
 273 static BOOL EMFDRV_CreateFontIndirect(PHYSDEV dev, HFONT hFont )
 274 {
 275     DWORD index = 0;
 276     EMREXTCREATEFONTINDIRECTW emr;
 277     int i;
 278
 279     if (!GetObjectW( hFont, sizeof(emr.elfw.elfLogFont), &emr.elfw.elfLogFont )) return 0;
 280
 281     emr.emr.iType = EMR_EXTCREATEFONTINDIRECTW;
 282     emr.emr.nSize = (sizeof(emr) + 3) / 4 * 4;
 283     emr.ihFont = index = EMFDRV_AddHandle( dev, hFont );
 284     emr.elfw.elfFullName[0] = '\0';
 285     emr.elfw.elfStyle[0]    = '\0';
 286     emr.elfw.elfVersion     = 0;
 287     emr.elfw.elfStyleSize   = 0;
 288     emr.elfw.elfMatch       = 0;
 289     emr.elfw.elfReserved    = 0;
 290     for(i = 0; i < ELF_VENDOR_SIZE; i++)
 291         emr.elfw.elfVendorId[i] = 0;
 292     emr.elfw.elfCulture                 = PAN_CULTURE_LATIN;
 293     emr.elfw.elfPanose.bFamilyType      = PAN_NO_FIT;
 294     emr.elfw.elfPanose.bSerifStyle      = PAN_NO_FIT;
 295     emr.elfw.elfPanose.bWeight          = PAN_NO_FIT;
 296     emr.elfw.elfPanose.bProportion      = PAN_NO_FIT;
 297     emr.elfw.elfPanose.bContrast        = PAN_NO_FIT;
 298     emr.elfw.elfPanose.bStrokeVariation = PAN_NO_FIT;
 299     emr.elfw.elfPanose.bArmStyle        = PAN_NO_FIT;
 300     emr.elfw.elfPanose.bLetterform      = PAN_NO_FIT;
 301     emr.elfw.elfPanose.bMidline         = PAN_NO_FIT;
 302     emr.elfw.elfPanose.bXHeight         = PAN_NO_FIT;
 303
 304     if(!EMFDRV_WriteRecord( dev, &emr.emr ))
 305         index = 0;
 306     return index;
 307 }
 308
 309
 310 /***********************************************************************
 311  *           EMFDRV_SelectFont
 312  */
 313 HFONT EMFDRV_SelectFont( PHYSDEV dev, HFONT hFont, HANDLE gdiFont )
 314 {
 315     EMFDRV_PDEVICE *physDev = (EMFDRV_PDEVICE*)dev;
 316     EMRSELECTOBJECT emr;
 317     DWORD index;
 318     int i;
 319
 320     if (physDev->restoring) return 0;  /* don't output SelectObject records during RestoreDC */
 321
 322     /* If the object is a stock font object, do not need to create it.
 323      * See definitions in  wingdi.h for range of stock fonts.
 324      * We do however have to handle setting the higher order bit to
 325      * designate that this is a stock object.
 326      */
 327
 328     for (i = OEM_FIXED_FONT; i <= DEFAULT_GUI_FONT; i++)
 329     {
 330         if (i != DEFAULT_PALETTE && hFont == GetStockObject(i))
 331         {
 332             index = i | 0x80000000;
 333             goto found;
 334         }
 335     }
 336
 337     if((index = EMFDRV_FindObject(dev, hFont)) != 0)
 338         goto found;
 339
 340     if (!(index = EMFDRV_CreateFontIndirect(dev, hFont ))) return HGDI_ERROR;
 341     GDI_hdc_using_object(hFont, dev->hdc);
 342
 343  found:
 344     emr.emr.iType = EMR_SELECTOBJECT;
 345     emr.emr.nSize = sizeof(emr);
 346     emr.ihObject = index;
 347     if(!EMFDRV_WriteRecord( dev, &emr.emr ))
 348         return HGDI_ERROR;
 349     return 0;
 350 }
 351
 352
 353
 354 /******************************************************************
 355  *         EMFDRV_CreatePenIndirect
 356  */
 357 static DWORD EMFDRV_CreatePenIndirect(PHYSDEV dev, HPEN hPen)
 358 {
 359     EMRCREATEPEN emr;
 360     DWORD index = 0;
 361
 362     if (!GetObjectW( hPen, sizeof(emr.lopn), &emr.lopn ))
 363     {
 364         /* must be an extended pen */
 365         EXTLOGPEN *elp;
 366         INT size = GetObjectW( hPen, 0, NULL );
 367
 368         if (!size) return 0;
 369
 370         elp = HeapAlloc( GetProcessHeap(), 0, size );
 371
 372         GetObjectW( hPen, size, elp );
 373         /* FIXME: add support for user style pens */
 374         emr.lopn.lopnStyle = elp->elpPenStyle;
 375         emr.lopn.lopnWidth.x = elp->elpWidth;
 376         emr.lopn.lopnWidth.y = 0;
 377         emr.lopn.lopnColor = elp->elpColor;
 378
 379         HeapFree( GetProcessHeap(), 0, elp );
 380     }
 381
 382     emr.emr.iType = EMR_CREATEPEN;
 383     emr.emr.nSize = sizeof(emr);
 384     emr.ihPen = index = EMFDRV_AddHandle( dev, hPen );
 385
 386     if(!EMFDRV_WriteRecord( dev, &emr.emr ))
 387         index = 0;
 388     return index;
 389 }
 390
 391 /******************************************************************
 392  *         EMFDRV_SelectPen
 393  */
 394 HPEN EMFDRV_SelectPen(PHYSDEV dev, HPEN hPen )
 395 {
 396     EMFDRV_PDEVICE *physDev = (EMFDRV_PDEVICE*)dev;
 397     EMRSELECTOBJECT emr;
 398     DWORD index;
 399     int i;
 400
 401     if (physDev->restoring) return hPen;  /* don't output SelectObject records during RestoreDC */
 402
 403     /* If the object is a stock pen object, do not need to create it.
 404      * See definitions in  wingdi.h for range of stock pens.
 405      * We do however have to handle setting the higher order bit to
 406      * designate that this is a stock object.
 407      */
 408
 409     for (i = WHITE_PEN; i <= DC_PEN; i++)
 410     {
 411         if (hPen == GetStockObject(i))
 412         {
 413             index = i | 0x80000000;
 414             goto found;
 415         }
 416     }
 417     if((index = EMFDRV_FindObject(dev, hPen)) != 0)
 418         goto found;
 419
 420     if (!(index = EMFDRV_CreatePenIndirect(dev, hPen))) return 0;
 421     GDI_hdc_using_object(hPen, dev->hdc);
 422
 423  found:
 424     emr.emr.iType = EMR_SELECTOBJECT;
 425     emr.emr.nSize = sizeof(emr);
 426     emr.ihObject = index;
 427     return EMFDRV_WriteRecord( dev, &emr.emr ) ? hPen : 0;
 428 }
 429
 430
 431 /******************************************************************
 432  *         EMFDRV_CreatePalette
 433  */
 434 static DWORD EMFDRV_CreatePalette(PHYSDEV dev, HPALETTE hPal)
 435 {
 436     WORD i;
 437     struct {
 438         EMRCREATEPALETTE hdr;
 439         PALETTEENTRY entry[255];
 440     } pal;
 441
 442     memset( &pal, 0, sizeof(pal) );
 443
 444     if (!GetObjectW( hPal, sizeof(pal.hdr.lgpl) + sizeof(pal.entry), &pal.hdr.lgpl ))
 445         return 0;
 446
 447     for (i = 0; i < pal.hdr.lgpl.palNumEntries; i++)
 448         pal.hdr.lgpl.palPalEntry[i].peFlags = 0;
 449
 450     pal.hdr.emr.iType = EMR_CREATEPALETTE;
 451     pal.hdr.emr.nSize = sizeof(pal.hdr) + pal.hdr.lgpl.palNumEntries * sizeof(PALETTEENTRY);
 452     pal.hdr.ihPal = EMFDRV_AddHandle( dev, hPal );
 453
 454     if (!EMFDRV_WriteRecord( dev, &pal.hdr.emr ))
 455         pal.hdr.ihPal = 0;
 456     return pal.hdr.ihPal;
 457 }
 458
 459 /******************************************************************
 460  *         EMFDRV_SelectPalette
 461  */
 462 HPALETTE EMFDRV_SelectPalette( PHYSDEV dev, HPALETTE hPal, BOOL force )
 463 {
 464     EMFDRV_PDEVICE *physDev = (EMFDRV_PDEVICE*)dev;
 465     EMRSELECTPALETTE emr;
 466     DWORD index;
 467
 468     if (physDev->restoring) return hPal;  /* don't output SelectObject records during RestoreDC */
 469
 470     if (hPal == GetStockObject( DEFAULT_PALETTE ))
 471     {
 472         index = DEFAULT_PALETTE | 0x80000000;
 473         goto found;
 474     }
 475
 476     if ((index = EMFDRV_FindObject( dev, hPal )) != 0)
 477         goto found;
 478
 479     if (!(index = EMFDRV_CreatePalette( dev, hPal ))) return 0;
 480     GDI_hdc_using_object( hPal, dev->hdc );
 481
 482 found:
 483     emr.emr.iType = EMR_SELECTPALETTE;
 484     emr.emr.nSize = sizeof(emr);
 485     emr.ihPal = index;
 486     return EMFDRV_WriteRecord( dev, &emr.emr ) ? hPal : 0;
 487 }
 488
 489 /******************************************************************
 490  *         EMFDRV_SetDCBrushColor
 491  */
 492 COLORREF EMFDRV_SetDCBrushColor( PHYSDEV dev, COLORREF color )
 493 {
 494     EMFDRV_PDEVICE *physDev = (EMFDRV_PDEVICE*)dev;
 495     EMRSELECTOBJECT emr;
 496     DWORD index;
 497
 498     if (GetCurrentObject( dev->hdc, OBJ_BRUSH ) != GetStockObject( DC_BRUSH )) return color;
 499
 500     if (physDev->dc_brush) DeleteObject( physDev->dc_brush );
 501     if (!(physDev->dc_brush = CreateSolidBrush( color ))) return CLR_INVALID;
 502     if (!(index = EMFDRV_CreateBrushIndirect(dev, physDev->dc_brush ))) return CLR_INVALID;
 503     GDI_hdc_using_object( physDev->dc_brush, dev->hdc );
 504     emr.emr.iType = EMR_SELECTOBJECT;
 505     emr.emr.nSize = sizeof(emr);
 506     emr.ihObject = index;
 507     return EMFDRV_WriteRecord( dev, &emr.emr ) ? color : CLR_INVALID;
 508 }
 509
 510 /******************************************************************
 511  *         EMFDRV_SetDCPenColor
 512  */
 513 COLORREF EMFDRV_SetDCPenColor( PHYSDEV dev, COLORREF color )
 514 {
 515     EMFDRV_PDEVICE *physDev = (EMFDRV_PDEVICE*)dev;
 516     EMRSELECTOBJECT emr;
 517     DWORD index;
 518     LOGPEN logpen = { PS_SOLID, { 0, 0 }, color };
 519
 520     if (GetCurrentObject( dev->hdc, OBJ_PEN ) != GetStockObject( DC_PEN )) return color;
 521
 522     if (physDev->dc_pen) DeleteObject( physDev->dc_pen );
 523     if (!(physDev->dc_pen = CreatePenIndirect( &logpen ))) return CLR_INVALID;
 524     if (!(index = EMFDRV_CreatePenIndirect(dev, physDev->dc_pen))) return CLR_INVALID;
 525     GDI_hdc_using_object( physDev->dc_pen, dev->hdc );
 526     emr.emr.iType = EMR_SELECTOBJECT;
 527     emr.emr.nSize = sizeof(emr);
 528     emr.ihObject = index;
 529     return EMFDRV_WriteRecord( dev, &emr.emr ) ? color : CLR_INVALID;
 530 }
 531
 532 /******************************************************************
 533  *         EMFDRV_GdiComment
 534  */
 535 BOOL EMFDRV_GdiComment(PHYSDEV dev, UINT bytes, CONST BYTE *buffer)
 536 {
 537     EMRGDICOMMENT *emr;
 538     UINT total, rounded_size;
 539     BOOL ret;
 540
 541     rounded_size = (bytes+3) & ~3;
 542     total = offsetof(EMRGDICOMMENT,Data) + rounded_size;
 543
 544     emr = HeapAlloc(GetProcessHeap(), 0, total);
 545     emr->emr.iType = EMR_GDICOMMENT;
 546     emr->emr.nSize = total;
 547     emr->cbData = bytes;
 548     memset(&emr->Data[bytes], 0, rounded_size - bytes);
 549     memcpy(&emr->Data[0], buffer, bytes);
 550
 551     ret = EMFDRV_WriteRecord( dev, &emr->emr );
 552
 553     HeapFree(GetProcessHeap(), 0, emr);
 554
 555     return ret;
 556 }