reactos/win32ss/gdi/gdi32/wine/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 FALSE;
  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[sizeof(BITMAPINFO) + 255 * sizeof(RGBQUAD)]; // ros!
 140         //char buffer[FIELD_OFFSET( BITMAPINFO, bmiColors[256] )];
 141         BITMAPINFO *info = (BITMAPINFO *)buffer;
 142         DWORD info_size;
 143         void *bits;
 144         UINT usage;
 145
 146         if (!get_brush_bitmap_info( hBrush, info, &bits, &usage )) break;
 147         info_size = get_dib_info_size( info, usage );
 148
 149         emr = HeapAlloc( GetProcessHeap(), 0,
 150                          sizeof(EMRCREATEDIBPATTERNBRUSHPT)+info_size+info->bmiHeader.biSizeImage );
 151         if(!emr) break;
 152
 153         if (logbrush.lbStyle == BS_PATTERN && info->bmiHeader.biBitCount == 1)
 154         {
 155             /* Presumably to reduce the size of the written EMF, MS supports an
 156              * undocumented iUsage value of 2, indicating a mono bitmap without the
 157              * 8 byte 2 entry black/white palette. Stupidly, they could have saved
 158              * over 20 bytes more by also ignoring the BITMAPINFO fields that are
 159              * irrelevant/constant for monochrome bitmaps.
 160              * FIXME: It may be that the DIB functions themselves accept this value.
 161              */
 162             emr->emr.iType = EMR_CREATEMONOBRUSH;
 163             usage = DIB_PAL_MONO;
 164             /* FIXME: There is an extra DWORD written by native before the BMI.
 165              *        Not sure what its meant to contain.
 166              */
 167             emr->offBmi = sizeof( EMRCREATEDIBPATTERNBRUSHPT ) + sizeof(DWORD);
 168             emr->cbBmi = sizeof( BITMAPINFOHEADER );
 169         }
 170         else
 171         {
 172             emr->emr.iType = EMR_CREATEDIBPATTERNBRUSHPT;
 173             emr->offBmi = sizeof( EMRCREATEDIBPATTERNBRUSHPT );
 174             emr->cbBmi = info_size;
 175         }
 176         emr->ihBrush = index = EMFDRV_AddHandle( dev, hBrush );
 177         emr->iUsage = usage;
 178         emr->offBits = emr->offBmi + emr->cbBmi;
 179         emr->cbBits = info->bmiHeader.biSizeImage;
 180         emr->emr.nSize = emr->offBits + emr->cbBits;
 181
 182         memcpy( (BYTE *)emr + emr->offBmi, info, emr->cbBmi );
 183         memcpy( (BYTE *)emr + emr->offBits, bits, emr->cbBits );
 184
 185         if(!EMFDRV_WriteRecord( dev, &emr->emr ))
 186             index = 0;
 187         HeapFree( GetProcessHeap(), 0, emr );
 188       }
 189       break;
 190
 191     default:
 192         FIXME("Unknown style %x\n", logbrush.lbStyle);
 193         break;
 194     }
 195     return index;
 196 }
 197
 198
 199 /***********************************************************************
 200  *           EMFDRV_SelectBrush
 201  */
 202 HBRUSH EMFDRV_SelectBrush( PHYSDEV dev, HBRUSH hBrush, const struct brush_pattern *pattern )
 203 {
 204     EMFDRV_PDEVICE *physDev = (EMFDRV_PDEVICE*)dev;
 205     EMRSELECTOBJECT emr;
 206     DWORD index;
 207     int i;
 208
 209     if (physDev->restoring) return hBrush;  /* don't output SelectObject records during RestoreDC */
 210
 211     /* If the object is a stock brush object, do not need to create it.
 212      * See definitions in  wingdi.h for range of stock brushes.
 213      * We do however have to handle setting the higher order bit to
 214      * designate that this is a stock object.
 215      */
 216     for (i = WHITE_BRUSH; i <= DC_BRUSH; i++)
 217     {
 218         if (hBrush == GetStockObject(i))
 219         {
 220             index = i | 0x80000000;
 221             goto found;
 222         }
 223     }
 224     if((index = EMFDRV_FindObject(dev, hBrush)) != 0)
 225         goto found;
 226
 227     if (!(index = EMFDRV_CreateBrushIndirect(dev, hBrush ))) return 0;
 228     GDI_hdc_using_object(hBrush, dev->hdc);
 229
 230  found:
 231     emr.emr.iType = EMR_SELECTOBJECT;
 232     emr.emr.nSize = sizeof(emr);
 233     emr.ihObject = index;
 234     return EMFDRV_WriteRecord( dev, &emr.emr ) ? hBrush : 0;
 235 }
 236
 237
 238 /******************************************************************
 239  *         EMFDRV_CreateFontIndirect
 240  */
 241 static BOOL EMFDRV_CreateFontIndirect(PHYSDEV dev, HFONT hFont )
 242 {
 243     DWORD index = 0;
 244     EMREXTCREATEFONTINDIRECTW emr;
 245     int i;
 246
 247     if (!GetObjectW( hFont, sizeof(emr.elfw.elfLogFont), &emr.elfw.elfLogFont )) return FALSE;
 248
 249     emr.emr.iType = EMR_EXTCREATEFONTINDIRECTW;
 250     emr.emr.nSize = (sizeof(emr) + 3) / 4 * 4;
 251     emr.ihFont = index = EMFDRV_AddHandle( dev, hFont );
 252     emr.elfw.elfFullName[0] = '\0';
 253     emr.elfw.elfStyle[0]    = '\0';
 254     emr.elfw.elfVersion     = 0;
 255     emr.elfw.elfStyleSize   = 0;
 256     emr.elfw.elfMatch       = 0;
 257     emr.elfw.elfReserved    = 0;
 258     for(i = 0; i < ELF_VENDOR_SIZE; i++)
 259         emr.elfw.elfVendorId[i] = 0;
 260     emr.elfw.elfCulture                 = PAN_CULTURE_LATIN;
 261     emr.elfw.elfPanose.bFamilyType      = PAN_NO_FIT;
 262     emr.elfw.elfPanose.bSerifStyle      = PAN_NO_FIT;
 263     emr.elfw.elfPanose.bWeight          = PAN_NO_FIT;
 264     emr.elfw.elfPanose.bProportion      = PAN_NO_FIT;
 265     emr.elfw.elfPanose.bContrast        = PAN_NO_FIT;
 266     emr.elfw.elfPanose.bStrokeVariation = PAN_NO_FIT;
 267     emr.elfw.elfPanose.bArmStyle        = PAN_NO_FIT;
 268     emr.elfw.elfPanose.bLetterform      = PAN_NO_FIT;
 269     emr.elfw.elfPanose.bMidline         = PAN_NO_FIT;
 270     emr.elfw.elfPanose.bXHeight         = PAN_NO_FIT;
 271
 272     if(!EMFDRV_WriteRecord( dev, &emr.emr ))
 273         index = 0;
 274     return index;
 275 }
 276
 277
 278 /***********************************************************************
 279  *           EMFDRV_SelectFont
 280  */
 281 HFONT EMFDRV_SelectFont( PHYSDEV dev, HFONT hFont, UINT *aa_flags )
 282 {
 283     EMFDRV_PDEVICE *physDev = (EMFDRV_PDEVICE*)dev;
 284     EMRSELECTOBJECT emr;
 285     DWORD index;
 286     int i;
 287
 288     if (physDev->restoring) goto done;  /* don't output SelectObject records during RestoreDC */
 289
 290     /* If the object is a stock font object, do not need to create it.
 291      * See definitions in  wingdi.h for range of stock fonts.
 292      * We do however have to handle setting the higher order bit to
 293      * designate that this is a stock object.
 294      */
 295
 296     for (i = OEM_FIXED_FONT; i <= DEFAULT_GUI_FONT; i++)
 297     {
 298         if (i != DEFAULT_PALETTE && hFont == GetStockObject(i))
 299         {
 300             index = i | 0x80000000;
 301             goto found;
 302         }
 303     }
 304
 305     if((index = EMFDRV_FindObject(dev, hFont)) != 0)
 306         goto found;
 307
 308     if (!(index = EMFDRV_CreateFontIndirect(dev, hFont ))) return 0;
 309     GDI_hdc_using_object(hFont, dev->hdc);
 310
 311  found:
 312     emr.emr.iType = EMR_SELECTOBJECT;
 313     emr.emr.nSize = sizeof(emr);
 314     emr.ihObject = index;
 315     if(!EMFDRV_WriteRecord( dev, &emr.emr ))
 316         return 0;
 317 done:
 318     *aa_flags = GGO_BITMAP;  /* no point in anti-aliasing on metafiles */
 319     dev = GET_NEXT_PHYSDEV( dev, pSelectFont );
 320     dev->funcs->pSelectFont( dev, hFont, aa_flags );
 321     return hFont;
 322 }
 323
 324
 325
 326 /******************************************************************
 327  *         EMFDRV_CreatePenIndirect
 328  */
 329 static DWORD EMFDRV_CreatePenIndirect(PHYSDEV dev, HPEN hPen)
 330 {
 331     EMRCREATEPEN emr;
 332     DWORD index = 0;
 333
 334     if (!GetObjectW( hPen, sizeof(emr.lopn), &emr.lopn ))
 335     {
 336         /* must be an extended pen */
 337         EXTLOGPEN *elp;
 338         INT size = GetObjectW( hPen, 0, NULL );
 339
 340         if (!size) return 0;
 341
 342         elp = HeapAlloc( GetProcessHeap(), 0, size );
 343
 344         GetObjectW( hPen, size, elp );
 345         /* FIXME: add support for user style pens */
 346         emr.lopn.lopnStyle = elp->elpPenStyle;
 347         emr.lopn.lopnWidth.x = elp->elpWidth;
 348         emr.lopn.lopnWidth.y = 0;
 349         emr.lopn.lopnColor = elp->elpColor;
 350
 351         HeapFree( GetProcessHeap(), 0, elp );
 352     }
 353
 354     emr.emr.iType = EMR_CREATEPEN;
 355     emr.emr.nSize = sizeof(emr);
 356     emr.ihPen = index = EMFDRV_AddHandle( dev, hPen );
 357
 358     if(!EMFDRV_WriteRecord( dev, &emr.emr ))
 359         index = 0;
 360     return index;
 361 }
 362
 363 /******************************************************************
 364  *         EMFDRV_SelectPen
 365  */
 366 HPEN EMFDRV_SelectPen(PHYSDEV dev, HPEN hPen, const struct brush_pattern *pattern )
 367 {
 368     EMFDRV_PDEVICE *physDev = (EMFDRV_PDEVICE*)dev;
 369     EMRSELECTOBJECT emr;
 370     DWORD index;
 371     int i;
 372
 373     if (physDev->restoring) return hPen;  /* don't output SelectObject records during RestoreDC */
 374
 375     /* If the object is a stock pen object, do not need to create it.
 376      * See definitions in  wingdi.h for range of stock pens.
 377      * We do however have to handle setting the higher order bit to
 378      * designate that this is a stock object.
 379      */
 380
 381     for (i = WHITE_PEN; i <= DC_PEN; i++)
 382     {
 383         if (hPen == GetStockObject(i))
 384         {
 385             index = i | 0x80000000;
 386             goto found;
 387         }
 388     }
 389     if((index = EMFDRV_FindObject(dev, hPen)) != 0)
 390         goto found;
 391
 392     if (!(index = EMFDRV_CreatePenIndirect(dev, hPen))) return 0;
 393     GDI_hdc_using_object(hPen, dev->hdc);
 394
 395  found:
 396     emr.emr.iType = EMR_SELECTOBJECT;
 397     emr.emr.nSize = sizeof(emr);
 398     emr.ihObject = index;
 399     return EMFDRV_WriteRecord( dev, &emr.emr ) ? hPen : 0;
 400 }
 401
 402
 403 /******************************************************************
 404  *         EMFDRV_CreatePalette
 405  */
 406 static DWORD EMFDRV_CreatePalette(PHYSDEV dev, HPALETTE hPal)
 407 {
 408     WORD i;
 409     struct {
 410         EMRCREATEPALETTE hdr;
 411         PALETTEENTRY entry[255];
 412     } pal;
 413
 414     memset( &pal, 0, sizeof(pal) );
 415
 416     if (!GetObjectW( hPal, sizeof(pal.hdr.lgpl) + sizeof(pal.entry), &pal.hdr.lgpl ))
 417         return 0;
 418
 419     for (i = 0; i < pal.hdr.lgpl.palNumEntries; i++)
 420         pal.hdr.lgpl.palPalEntry[i].peFlags = 0;
 421
 422     pal.hdr.emr.iType = EMR_CREATEPALETTE;
 423     pal.hdr.emr.nSize = sizeof(pal.hdr) + pal.hdr.lgpl.palNumEntries * sizeof(PALETTEENTRY);
 424     pal.hdr.ihPal = EMFDRV_AddHandle( dev, hPal );
 425
 426     if (!EMFDRV_WriteRecord( dev, &pal.hdr.emr ))
 427         pal.hdr.ihPal = 0;
 428     return pal.hdr.ihPal;
 429 }
 430
 431 /******************************************************************
 432  *         EMFDRV_SelectPalette
 433  */
 434 HPALETTE EMFDRV_SelectPalette( PHYSDEV dev, HPALETTE hPal, BOOL force )
 435 {
 436     EMFDRV_PDEVICE *physDev = (EMFDRV_PDEVICE*)dev;
 437     EMRSELECTPALETTE emr;
 438     DWORD index;
 439
 440     if (physDev->restoring) return hPal;  /* don't output SelectObject records during RestoreDC */
 441
 442     if (hPal == GetStockObject( DEFAULT_PALETTE ))
 443     {
 444         index = DEFAULT_PALETTE | 0x80000000;
 445         goto found;
 446     }
 447
 448     if ((index = EMFDRV_FindObject( dev, hPal )) != 0)
 449         goto found;
 450
 451     if (!(index = EMFDRV_CreatePalette( dev, hPal ))) return 0;
 452     GDI_hdc_using_object( hPal, dev->hdc );
 453
 454 found:
 455     emr.emr.iType = EMR_SELECTPALETTE;
 456     emr.emr.nSize = sizeof(emr);
 457     emr.ihPal = index;
 458     return EMFDRV_WriteRecord( dev, &emr.emr ) ? hPal : 0;
 459 }
 460
 461 /******************************************************************
 462  *         EMFDRV_SetDCBrushColor
 463  */
 464 COLORREF EMFDRV_SetDCBrushColor( PHYSDEV dev, COLORREF color )
 465 {
 466     EMFDRV_PDEVICE *physDev = (EMFDRV_PDEVICE*)dev;
 467     EMRSELECTOBJECT emr;
 468     DWORD index;
 469
 470     if (GetCurrentObject( dev->hdc, OBJ_BRUSH ) != GetStockObject( DC_BRUSH )) return color;
 471
 472     if (physDev->dc_brush) DeleteObject( physDev->dc_brush );
 473     if (!(physDev->dc_brush = CreateSolidBrush( color ))) return CLR_INVALID;
 474     if (!(index = EMFDRV_CreateBrushIndirect(dev, physDev->dc_brush ))) return CLR_INVALID;
 475     GDI_hdc_using_object( physDev->dc_brush, dev->hdc );
 476     emr.emr.iType = EMR_SELECTOBJECT;
 477     emr.emr.nSize = sizeof(emr);
 478     emr.ihObject = index;
 479     return EMFDRV_WriteRecord( dev, &emr.emr ) ? color : CLR_INVALID;
 480 }
 481
 482 /******************************************************************
 483  *         EMFDRV_SetDCPenColor
 484  */
 485 COLORREF EMFDRV_SetDCPenColor( PHYSDEV dev, COLORREF color )
 486 {
 487     EMFDRV_PDEVICE *physDev = (EMFDRV_PDEVICE*)dev;
 488     EMRSELECTOBJECT emr;
 489     DWORD index;
 490     LOGPEN logpen = { PS_SOLID, { 0, 0 }, color };
 491
 492     if (GetCurrentObject( dev->hdc, OBJ_PEN ) != GetStockObject( DC_PEN )) return color;
 493
 494     if (physDev->dc_pen) DeleteObject( physDev->dc_pen );
 495     if (!(physDev->dc_pen = CreatePenIndirect( &logpen ))) return CLR_INVALID;
 496     if (!(index = EMFDRV_CreatePenIndirect(dev, physDev->dc_pen))) return CLR_INVALID;
 497     GDI_hdc_using_object( physDev->dc_pen, dev->hdc );
 498     emr.emr.iType = EMR_SELECTOBJECT;
 499     emr.emr.nSize = sizeof(emr);
 500     emr.ihObject = index;
 501     return EMFDRV_WriteRecord( dev, &emr.emr ) ? color : CLR_INVALID;
 502 }
 503
 504 /******************************************************************
 505  *         EMFDRV_GdiComment
 506  */
 507 BOOL EMFDRV_GdiComment(PHYSDEV dev, UINT bytes, const BYTE *buffer)
 508 {
 509     EMRGDICOMMENT *emr;
 510     UINT total, rounded_size;
 511     BOOL ret;
 512
 513     rounded_size = (bytes+3) & ~3;
 514     total = offsetof(EMRGDICOMMENT,Data) + rounded_size;
 515
 516     emr = HeapAlloc(GetProcessHeap(), 0, total);
 517     emr->emr.iType = EMR_GDICOMMENT;
 518     emr->emr.nSize = total;
 519     emr->cbData = bytes;
 520     memset(&emr->Data[bytes], 0, rounded_size - bytes);
 521     memcpy(&emr->Data[0], buffer, bytes);
 522
 523     ret = EMFDRV_WriteRecord( dev, &emr->emr );
 524
 525     HeapFree(GetProcessHeap(), 0, emr);
 526
 527     return ret;
 528 }