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] = get_full_gdi_handle( 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_PATTERN:
 136     case BS_DIBPATTERN:
 137       {
 138         EMRCREATEDIBPATTERNBRUSHPT *emr;
 139         char buffer[FIELD_OFFSET( BITMAPINFO, bmiColors[256] )];
 140         BITMAPINFO *info = (BITMAPINFO *)buffer;
 141         DWORD info_size;
 142         void *bits;
 143         UINT usage;
 144
 145         if (!get_brush_bitmap_info( hBrush, info, &bits, &usage )) break;
 146         info_size = get_dib_info_size( info, usage );
 147
 148         emr = HeapAlloc( GetProcessHeap(), 0,
 149                          sizeof(EMRCREATEDIBPATTERNBRUSHPT)+info_size+info->bmiHeader.biSizeImage );
 150         if(!emr) break;
 151
 152         if (logbrush.lbStyle == BS_PATTERN && info->bmiHeader.biBitCount == 1)
 153         {
 154             /* Presumably to reduce the size of the written EMF, MS supports an
 155              * undocumented iUsage value of 2, indicating a mono bitmap without the
 156              * 8 byte 2 entry black/white palette. Stupidly, they could have saved
 157              * over 20 bytes more by also ignoring the BITMAPINFO fields that are
 158              * irrelevant/constant for monochrome bitmaps.
 159              * FIXME: It may be that the DIB functions themselves accept this value.
 160              */
 161             emr->emr.iType = EMR_CREATEMONOBRUSH;
 162             usage = DIB_PAL_MONO;
 163             /* FIXME: There is an extra DWORD written by native before the BMI.
 164              *        Not sure what its meant to contain.
 165              */
 166             emr->offBmi = sizeof( EMRCREATEDIBPATTERNBRUSHPT ) + sizeof(DWORD);
 167             emr->cbBmi = sizeof( BITMAPINFOHEADER );
 168         }
 169         else
 170         {
 171             emr->emr.iType = EMR_CREATEDIBPATTERNBRUSHPT;
 172             emr->offBmi = sizeof( EMRCREATEDIBPATTERNBRUSHPT );
 173             emr->cbBmi = info_size;
 174         }
 175         emr->ihBrush = index = EMFDRV_AddHandle( dev, hBrush );
 176         emr->iUsage = usage;
 177         emr->offBits = emr->offBmi + emr->cbBmi;
 178         emr->cbBits = info->bmiHeader.biSizeImage;
 179         emr->emr.nSize = emr->offBits + emr->cbBits;
 180
 181         memcpy( (BYTE *)emr + emr->offBmi, info, emr->cbBmi );
 182         memcpy( (BYTE *)emr + emr->offBits, bits, emr->cbBits );
 183
 184         if(!EMFDRV_WriteRecord( dev, &emr->emr ))
 185             index = 0;
 186         HeapFree( GetProcessHeap(), 0, emr );
 187       }
 188       break;
 189
 190     default:
 191         FIXME("Unknown style %x\n", logbrush.lbStyle);
 192         break;
 193     }
 194     return index;
 195 }
 196
 197
 198 /***********************************************************************
 199  *           EMFDRV_SelectBrush
 200  */
 201 HBRUSH EMFDRV_SelectBrush( PHYSDEV dev, HBRUSH hBrush, const struct brush_pattern *pattern )
 202 {
 203     EMFDRV_PDEVICE *physDev = (EMFDRV_PDEVICE*)dev;
 204     EMRSELECTOBJECT emr;
 205     DWORD index;
 206     int i;
 207
 208     if (physDev->restoring) return hBrush;  /* don't output SelectObject records during RestoreDC */
 209
 210     /* If the object is a stock brush object, do not need to create it.
 211      * See definitions in  wingdi.h for range of stock brushes.
 212      * We do however have to handle setting the higher order bit to
 213      * designate that this is a stock object.
 214      */
 215     for (i = WHITE_BRUSH; i <= DC_BRUSH; i++)
 216     {
 217         if (hBrush == GetStockObject(i))
 218         {
 219             index = i | 0x80000000;
 220             goto found;
 221         }
 222     }
 223     if((index = EMFDRV_FindObject(dev, hBrush)) != 0)
 224         goto found;
 225
 226     if (!(index = EMFDRV_CreateBrushIndirect(dev, hBrush ))) return 0;
 227     GDI_hdc_using_object(hBrush, dev->hdc);
 228
 229  found:
 230     emr.emr.iType = EMR_SELECTOBJECT;
 231     emr.emr.nSize = sizeof(emr);
 232     emr.ihObject = index;
 233     return EMFDRV_WriteRecord( dev, &emr.emr ) ? hBrush : 0;
 234 }
 235
 236
 237 /******************************************************************
 238  *         EMFDRV_CreateFontIndirect
 239  */
 240 static BOOL EMFDRV_CreateFontIndirect(PHYSDEV dev, HFONT hFont )
 241 {
 242     DWORD index = 0;
 243     EMREXTCREATEFONTINDIRECTW emr;
 244     int i;
 245
 246     if (!GetObjectW( hFont, sizeof(emr.elfw.elfLogFont), &emr.elfw.elfLogFont )) return 0;
 247
 248     emr.emr.iType = EMR_EXTCREATEFONTINDIRECTW;
 249     emr.emr.nSize = (sizeof(emr) + 3) / 4 * 4;
 250     emr.ihFont = index = EMFDRV_AddHandle( dev, hFont );
 251     emr.elfw.elfFullName[0] = '\0';
 252     emr.elfw.elfStyle[0]    = '\0';
 253     emr.elfw.elfVersion     = 0;
 254     emr.elfw.elfStyleSize   = 0;
 255     emr.elfw.elfMatch       = 0;
 256     emr.elfw.elfReserved    = 0;
 257     for(i = 0; i < ELF_VENDOR_SIZE; i++)
 258         emr.elfw.elfVendorId[i] = 0;
 259     emr.elfw.elfCulture                 = PAN_CULTURE_LATIN;
 260     emr.elfw.elfPanose.bFamilyType      = PAN_NO_FIT;
 261     emr.elfw.elfPanose.bSerifStyle      = PAN_NO_FIT;
 262     emr.elfw.elfPanose.bWeight          = PAN_NO_FIT;
 263     emr.elfw.elfPanose.bProportion      = PAN_NO_FIT;
 264     emr.elfw.elfPanose.bContrast        = PAN_NO_FIT;
 265     emr.elfw.elfPanose.bStrokeVariation = PAN_NO_FIT;
 266     emr.elfw.elfPanose.bArmStyle        = PAN_NO_FIT;
 267     emr.elfw.elfPanose.bLetterform      = PAN_NO_FIT;
 268     emr.elfw.elfPanose.bMidline         = PAN_NO_FIT;
 269     emr.elfw.elfPanose.bXHeight         = PAN_NO_FIT;
 270
 271     if(!EMFDRV_WriteRecord( dev, &emr.emr ))
 272         index = 0;
 273     return index;
 274 }
 275
 276
 277 /***********************************************************************
 278  *           EMFDRV_SelectFont
 279  */
 280 HFONT EMFDRV_SelectFont( PHYSDEV dev, HFONT hFont, UINT *aa_flags )
 281 {
 282     EMFDRV_PDEVICE *physDev = (EMFDRV_PDEVICE*)dev;
 283     EMRSELECTOBJECT emr;
 284     DWORD index;
 285     int i;
 286
 287     if (physDev->restoring) goto done;  /* don't output SelectObject records during RestoreDC */
 288
 289     /* If the object is a stock font object, do not need to create it.
 290      * See definitions in  wingdi.h for range of stock fonts.
 291      * We do however have to handle setting the higher order bit to
 292      * designate that this is a stock object.
 293      */
 294
 295     for (i = OEM_FIXED_FONT; i <= DEFAULT_GUI_FONT; i++)
 296     {
 297         if (i != DEFAULT_PALETTE && hFont == GetStockObject(i))
 298         {
 299             index = i | 0x80000000;
 300             goto found;
 301         }
 302     }
 303
 304     if((index = EMFDRV_FindObject(dev, hFont)) != 0)
 305         goto found;
 306
 307     if (!(index = EMFDRV_CreateFontIndirect(dev, hFont ))) return 0;
 308     GDI_hdc_using_object(hFont, dev->hdc);
 309
 310  found:
 311     emr.emr.iType = EMR_SELECTOBJECT;
 312     emr.emr.nSize = sizeof(emr);
 313     emr.ihObject = index;
 314     if(!EMFDRV_WriteRecord( dev, &emr.emr ))
 315         return 0;
 316 done:
 317     *aa_flags = GGO_BITMAP;  /* no point in anti-aliasing on metafiles */
 318     dev = GET_NEXT_PHYSDEV( dev, pSelectFont );
 319     dev->funcs->pSelectFont( dev, hFont, aa_flags );
 320     return hFont;
 321 }
 322
 323
 324
 325 /******************************************************************
 326  *         EMFDRV_CreatePenIndirect
 327  */
 328 static DWORD EMFDRV_CreatePenIndirect(PHYSDEV dev, HPEN hPen)
 329 {
 330     EMRCREATEPEN emr;
 331     DWORD index = 0;
 332
 333     if (!GetObjectW( hPen, sizeof(emr.lopn), &emr.lopn ))
 334     {
 335         /* must be an extended pen */
 336         EXTLOGPEN *elp;
 337         INT size = GetObjectW( hPen, 0, NULL );
 338
 339         if (!size) return 0;
 340
 341         elp = HeapAlloc( GetProcessHeap(), 0, size );
 342
 343         GetObjectW( hPen, size, elp );
 344         /* FIXME: add support for user style pens */
 345         emr.lopn.lopnStyle = elp->elpPenStyle;
 346         emr.lopn.lopnWidth.x = elp->elpWidth;
 347         emr.lopn.lopnWidth.y = 0;
 348         emr.lopn.lopnColor = elp->elpColor;
 349
 350         HeapFree( GetProcessHeap(), 0, elp );
 351     }
 352
 353     emr.emr.iType = EMR_CREATEPEN;
 354     emr.emr.nSize = sizeof(emr);
 355     emr.ihPen = index = EMFDRV_AddHandle( dev, hPen );
 356
 357     if(!EMFDRV_WriteRecord( dev, &emr.emr ))
 358         index = 0;
 359     return index;
 360 }
 361
 362 /******************************************************************
 363  *         EMFDRV_SelectPen
 364  */
 365 HPEN EMFDRV_SelectPen(PHYSDEV dev, HPEN hPen, const struct brush_pattern *pattern )
 366 {
 367     EMFDRV_PDEVICE *physDev = (EMFDRV_PDEVICE*)dev;
 368     EMRSELECTOBJECT emr;
 369     DWORD index;
 370     int i;
 371
 372     if (physDev->restoring) return hPen;  /* don't output SelectObject records during RestoreDC */
 373
 374     /* If the object is a stock pen object, do not need to create it.
 375      * See definitions in  wingdi.h for range of stock pens.
 376      * We do however have to handle setting the higher order bit to
 377      * designate that this is a stock object.
 378      */
 379
 380     for (i = WHITE_PEN; i <= DC_PEN; i++)
 381     {
 382         if (hPen == GetStockObject(i))
 383         {
 384             index = i | 0x80000000;
 385             goto found;
 386         }
 387     }
 388     if((index = EMFDRV_FindObject(dev, hPen)) != 0)
 389         goto found;
 390
 391     if (!(index = EMFDRV_CreatePenIndirect(dev, hPen))) return 0;
 392     GDI_hdc_using_object(hPen, dev->hdc);
 393
 394  found:
 395     emr.emr.iType = EMR_SELECTOBJECT;
 396     emr.emr.nSize = sizeof(emr);
 397     emr.ihObject = index;
 398     return EMFDRV_WriteRecord( dev, &emr.emr ) ? hPen : 0;
 399 }
 400
 401
 402 /******************************************************************
 403  *         EMFDRV_CreatePalette
 404  */
 405 static DWORD EMFDRV_CreatePalette(PHYSDEV dev, HPALETTE hPal)
 406 {
 407     WORD i;
 408     struct {
 409         EMRCREATEPALETTE hdr;
 410         PALETTEENTRY entry[255];
 411     } pal;
 412
 413     memset( &pal, 0, sizeof(pal) );
 414
 415     if (!GetObjectW( hPal, sizeof(pal.hdr.lgpl) + sizeof(pal.entry), &pal.hdr.lgpl ))
 416         return 0;
 417
 418     for (i = 0; i < pal.hdr.lgpl.palNumEntries; i++)
 419         pal.hdr.lgpl.palPalEntry[i].peFlags = 0;
 420
 421     pal.hdr.emr.iType = EMR_CREATEPALETTE;
 422     pal.hdr.emr.nSize = sizeof(pal.hdr) + pal.hdr.lgpl.palNumEntries * sizeof(PALETTEENTRY);
 423     pal.hdr.ihPal = EMFDRV_AddHandle( dev, hPal );
 424
 425     if (!EMFDRV_WriteRecord( dev, &pal.hdr.emr ))
 426         pal.hdr.ihPal = 0;
 427     return pal.hdr.ihPal;
 428 }
 429
 430 /******************************************************************
 431  *         EMFDRV_SelectPalette
 432  */
 433 HPALETTE EMFDRV_SelectPalette( PHYSDEV dev, HPALETTE hPal, BOOL force )
 434 {
 435     EMFDRV_PDEVICE *physDev = (EMFDRV_PDEVICE*)dev;
 436     EMRSELECTPALETTE emr;
 437     DWORD index;
 438
 439     if (physDev->restoring) return hPal;  /* don't output SelectObject records during RestoreDC */
 440
 441     if (hPal == GetStockObject( DEFAULT_PALETTE ))
 442     {
 443         index = DEFAULT_PALETTE | 0x80000000;
 444         goto found;
 445     }
 446
 447     if ((index = EMFDRV_FindObject( dev, hPal )) != 0)
 448         goto found;
 449
 450     if (!(index = EMFDRV_CreatePalette( dev, hPal ))) return 0;
 451     GDI_hdc_using_object( hPal, dev->hdc );
 452
 453 found:
 454     emr.emr.iType = EMR_SELECTPALETTE;
 455     emr.emr.nSize = sizeof(emr);
 456     emr.ihPal = index;
 457     return EMFDRV_WriteRecord( dev, &emr.emr ) ? hPal : 0;
 458 }
 459
 460 /******************************************************************
 461  *         EMFDRV_SetDCBrushColor
 462  */
 463 COLORREF EMFDRV_SetDCBrushColor( PHYSDEV dev, COLORREF color )
 464 {
 465     EMFDRV_PDEVICE *physDev = (EMFDRV_PDEVICE*)dev;
 466     EMRSELECTOBJECT emr;
 467     DWORD index;
 468
 469     if (GetCurrentObject( dev->hdc, OBJ_BRUSH ) != GetStockObject( DC_BRUSH )) return color;
 470
 471     if (physDev->dc_brush) DeleteObject( physDev->dc_brush );
 472     if (!(physDev->dc_brush = CreateSolidBrush( color ))) return CLR_INVALID;
 473     if (!(index = EMFDRV_CreateBrushIndirect(dev, physDev->dc_brush ))) return CLR_INVALID;
 474     GDI_hdc_using_object( physDev->dc_brush, dev->hdc );
 475     emr.emr.iType = EMR_SELECTOBJECT;
 476     emr.emr.nSize = sizeof(emr);
 477     emr.ihObject = index;
 478     return EMFDRV_WriteRecord( dev, &emr.emr ) ? color : CLR_INVALID;
 479 }
 480
 481 /******************************************************************
 482  *         EMFDRV_SetDCPenColor
 483  */
 484 COLORREF EMFDRV_SetDCPenColor( PHYSDEV dev, COLORREF color )
 485 {
 486     EMFDRV_PDEVICE *physDev = (EMFDRV_PDEVICE*)dev;
 487     EMRSELECTOBJECT emr;
 488     DWORD index;
 489     LOGPEN logpen = { PS_SOLID, { 0, 0 }, color };
 490
 491     if (GetCurrentObject( dev->hdc, OBJ_PEN ) != GetStockObject( DC_PEN )) return color;
 492
 493     if (physDev->dc_pen) DeleteObject( physDev->dc_pen );
 494     if (!(physDev->dc_pen = CreatePenIndirect( &logpen ))) return CLR_INVALID;
 495     if (!(index = EMFDRV_CreatePenIndirect(dev, physDev->dc_pen))) return CLR_INVALID;
 496     GDI_hdc_using_object( physDev->dc_pen, dev->hdc );
 497     emr.emr.iType = EMR_SELECTOBJECT;
 498     emr.emr.nSize = sizeof(emr);
 499     emr.ihObject = index;
 500     return EMFDRV_WriteRecord( dev, &emr.emr ) ? color : CLR_INVALID;
 501 }
 502
 503 /******************************************************************
 504  *         EMFDRV_GdiComment
 505  */
 506 BOOL EMFDRV_GdiComment(PHYSDEV dev, UINT bytes, CONST BYTE *buffer)
 507 {
 508     EMRGDICOMMENT *emr;
 509     UINT total, rounded_size;
 510     BOOL ret;
 511
 512     rounded_size = (bytes+3) & ~3;
 513     total = offsetof(EMRGDICOMMENT,Data) + rounded_size;
 514
 515     emr = HeapAlloc(GetProcessHeap(), 0, total);
 516     emr->emr.iType = EMR_GDICOMMENT;
 517     emr->emr.nSize = total;
 518     emr->cbData = bytes;
 519     memset(&emr->Data[bytes], 0, rounded_size - bytes);
 520     memcpy(&emr->Data[0], buffer, bytes);
 521
 522     ret = EMFDRV_WriteRecord( dev, &emr->emr );
 523
 524     HeapFree(GetProcessHeap(), 0, emr);
 525
 526     return ret;
 527 }