dlls/gdi/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., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  19  */
  20
  21 #include <stdlib.h>
  22 #include <stdio.h>
  23 #include <string.h>
  24
  25 #include "gdi.h"
  26 #include "enhmfdrv/enhmetafiledrv.h"
  27 #include "gdi_private.h"
  28 #include "wine/debug.h"
  29
  30 WINE_DEFAULT_DEBUG_CHANNEL(enhmetafile);
  31
  32
  33 /******************************************************************
  34  *         EMFDRV_AddHandle
  35  */
  36 static UINT EMFDRV_AddHandle( PHYSDEV dev, HGDIOBJ obj )
  37 {
  38     EMFDRV_PDEVICE *physDev = (EMFDRV_PDEVICE *)dev;
  39     UINT index;
  40
  41     for(index = 0; index < physDev->handles_size; index++)
  42         if(physDev->handles[index] == 0) break;
  43     if(index == physDev->handles_size) {
  44         physDev->handles_size += HANDLE_LIST_INC;
  45         physDev->handles = HeapReAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY,
  46                                        physDev->handles,
  47                                        physDev->handles_size * sizeof(physDev->handles[0]));
  48     }
  49     physDev->handles[index] = obj;
  50
  51     physDev->cur_handles++;
  52     if(physDev->cur_handles > physDev->emh->nHandles)
  53         physDev->emh->nHandles++;
  54
  55     return index + 1; /* index 0 is reserved for the hmf, so we increment everything by 1 */
  56 }
  57
  58 /******************************************************************
  59  *         EMFDRV_FindObject
  60  */
  61 static UINT EMFDRV_FindObject( PHYSDEV dev, HGDIOBJ obj )
  62 {
  63     EMFDRV_PDEVICE *physDev = (EMFDRV_PDEVICE*) dev;
  64     UINT index;
  65
  66     for(index = 0; index < physDev->handles_size; index++)
  67         if(physDev->handles[index] == obj) break;
  68
  69     if(index == physDev->handles_size) return 0;
  70
  71     return index + 1;
  72 }
  73
  74
  75 /******************************************************************
  76  *         EMFDRV_DeleteObject
  77  */
  78 BOOL EMFDRV_DeleteObject( PHYSDEV dev, HGDIOBJ obj )
  79 {
  80     EMRDELETEOBJECT emr;
  81     EMFDRV_PDEVICE *physDev = (EMFDRV_PDEVICE*) dev;
  82     UINT index;
  83     BOOL ret = TRUE;
  84
  85     if(!(index = EMFDRV_FindObject(dev, obj))) return 0;
  86
  87     emr.emr.iType = EMR_DELETEOBJECT;
  88     emr.emr.nSize = sizeof(emr);
  89     emr.ihObject = index;
  90
  91     if(!EMFDRV_WriteRecord( dev, &emr.emr ))
  92         ret = FALSE;
  93
  94     physDev->handles[index - 1] = 0;
  95     physDev->cur_handles--;
  96     return ret;
  97 }
  98
  99
 100 /***********************************************************************
 101  *           EMFDRV_SelectBitmap
 102  */
 103 HBITMAP EMFDRV_SelectBitmap( PHYSDEV dev, HBITMAP hbitmap )
 104 {
 105     return 0;
 106 }
 107
 108
 109 /* Internal helper for EMFDRV_CreateBrushIndirect():
 110  * Change the padding of a bitmap from 16 (BMP) to 32 (DIB) bits.
 111  */
 112 static inline void EMFDRV_PadTo32(LPBYTE lpRows, int height, int width)
 113 {
 114     int bytes16 = 2 * ((width + 15) / 16);
 115     int bytes32 = 4 * ((width + 31) / 32);
 116     LPBYTE lpSrc, lpDst;
 117     int i;
 118
 119     if (!height)
 120         return;
 121
 122     height = abs(height) - 1;
 123     lpSrc = lpRows + height * bytes16;
 124     lpDst = lpRows + height * bytes32;
 125
 126     /* Note that we work backwards so we can re-pad in place */
 127     while (height >= 0)
 128     {
 129         for (i = bytes32; i > bytes16; i--)
 130             lpDst[i - 1] = 0; /* Zero the padding bytes */
 131         for (; i > 0; i--)
 132             lpDst[i - 1] = lpSrc[i - 1]; /* Move image bytes into alignment */
 133         lpSrc -= bytes16;
 134         lpDst -= bytes32;
 135         height--;
 136     }
 137 }
 138
 139 /***********************************************************************
 140  *           EMFDRV_CreateBrushIndirect
 141  */
 142 DWORD EMFDRV_CreateBrushIndirect( PHYSDEV dev, HBRUSH hBrush )
 143 {
 144     DWORD index = 0;
 145     LOGBRUSH logbrush;
 146
 147     if (!GetObjectA( hBrush, sizeof(logbrush), &logbrush )) return 0;
 148
 149     switch (logbrush.lbStyle) {
 150     case BS_SOLID:
 151     case BS_HATCHED:
 152     case BS_NULL:
 153       {
 154         EMRCREATEBRUSHINDIRECT emr;
 155         emr.emr.iType = EMR_CREATEBRUSHINDIRECT;
 156         emr.emr.nSize = sizeof(emr);
 157         emr.ihBrush = index = EMFDRV_AddHandle( dev, hBrush );
 158         emr.lb = logbrush;
 159
 160         if(!EMFDRV_WriteRecord( dev, &emr.emr ))
 161             index = 0;
 162       }
 163       break;
 164     case BS_DIBPATTERN:
 165       {
 166         EMRCREATEDIBPATTERNBRUSHPT *emr;
 167         DWORD bmSize, biSize, size;
 168         BITMAPINFO *info = GlobalLock16(logbrush.lbHatch);
 169
 170         if (info->bmiHeader.biCompression)
 171             bmSize = info->bmiHeader.biSizeImage;
 172         else
 173             bmSize = DIB_GetDIBImageBytes(info->bmiHeader.biWidth,
 174                                           info->bmiHeader.biHeight,
 175                                           info->bmiHeader.biBitCount);
 176         biSize = DIB_BitmapInfoSize(info, LOWORD(logbrush.lbColor));
 177         size = sizeof(EMRCREATEDIBPATTERNBRUSHPT) + biSize + bmSize;
 178         emr = HeapAlloc( GetProcessHeap(), 0, size );
 179         if(!emr) break;
 180         emr->emr.iType = EMR_CREATEDIBPATTERNBRUSHPT;
 181         emr->emr.nSize = size;
 182         emr->ihBrush = index = EMFDRV_AddHandle( dev, hBrush );
 183         emr->iUsage = LOWORD(logbrush.lbColor);
 184         emr->offBmi = sizeof(EMRCREATEDIBPATTERNBRUSHPT);
 185         emr->cbBmi = biSize;
 186         emr->offBits = sizeof(EMRCREATEDIBPATTERNBRUSHPT) + biSize;
 187         emr->cbBits = bmSize;
 188         memcpy((char *)emr + sizeof(EMRCREATEDIBPATTERNBRUSHPT), info,
 189                biSize + bmSize );
 190
 191         if(!EMFDRV_WriteRecord( dev, &emr->emr ))
 192             index = 0;
 193         HeapFree( GetProcessHeap(), 0, emr );
 194         GlobalUnlock16(logbrush.lbHatch);
 195       }
 196       break;
 197
 198     case BS_PATTERN:
 199       {
 200         EMRCREATEDIBPATTERNBRUSHPT *emr;
 201         BITMAPINFOHEADER *info;
 202         BITMAP bm;
 203         DWORD bmSize, biSize, size;
 204
 205         GetObjectA((HANDLE)logbrush.lbHatch, sizeof(bm), &bm);
 206
 207         if (bm.bmBitsPixel != 1 || bm.bmPlanes != 1)
 208         {
 209             FIXME("Trying to create a color pattern brush\n");
 210             break;
 211         }
 212
 213         /* BMP will be aligned to 32 bits, not 16 */
 214         bmSize = DIB_GetDIBImageBytes(bm.bmWidth, bm.bmHeight, bm.bmBitsPixel);
 215
 216         biSize = sizeof(BITMAPINFOHEADER);
 217         /* FIXME: There is an extra DWORD written by native before the BMI.
 218          *        Not sure what its meant to contain.
 219          */
 220         size = sizeof(EMRCREATEDIBPATTERNBRUSHPT) + biSize + bmSize + sizeof(DWORD);
 221
 222         emr = HeapAlloc( GetProcessHeap(), 0, size );
 223         if(!emr)
 224           break;
 225
 226         info = (BITMAPINFOHEADER *)((LPBYTE)emr +
 227                 sizeof(EMRCREATEDIBPATTERNBRUSHPT) + sizeof(DWORD));
 228         info->biSize = sizeof(BITMAPINFOHEADER);
 229         info->biWidth = bm.bmWidth;
 230         info->biHeight = bm.bmHeight;
 231         info->biPlanes = bm.bmPlanes;
 232         info->biBitCount = bm.bmBitsPixel;
 233         info->biSizeImage = bmSize;
 234         GetBitmapBits((HANDLE)logbrush.lbHatch,
 235                       bm.bmHeight * BITMAP_GetWidthBytes(bm.bmWidth, bm.bmBitsPixel),
 236                       (LPBYTE)info + sizeof(BITMAPINFOHEADER));
 237
 238         /* Change the padding to be DIB compatible if needed */
 239         if (bm.bmWidth & 31)
 240             EMFDRV_PadTo32((LPBYTE)info + sizeof(BITMAPINFOHEADER), bm.bmWidth, bm.bmHeight);
 241
 242         emr->emr.iType = EMR_CREATEMONOBRUSH;
 243         emr->emr.nSize = size;
 244         emr->ihBrush = index = EMFDRV_AddHandle( dev, hBrush );
 245         /* Presumably to reduce the size of the written EMF, MS supports an
 246          * undocumented iUsage value of 2, indicating a mono bitmap without the
 247          * 8 byte 2 entry black/white palette. Stupidly, they could have saved
 248          * over 20 bytes more by also ignoring the BITMAPINFO fields that are
 249          * irrelevant/constant for monochrome bitmaps.
 250          * FIXME: It may be that the DIB functions themselves accept this value.
 251          */
 252         emr->iUsage = DIB_PAL_MONO;
 253         emr->offBmi = (LPBYTE)info - (LPBYTE)emr;
 254         emr->cbBmi = biSize;
 255         emr->offBits = emr->offBmi + biSize;
 256         emr->cbBits = bmSize;
 257
 258         if(!EMFDRV_WriteRecord( dev, &emr->emr ))
 259             index = 0;
 260         HeapFree( GetProcessHeap(), 0, emr );
 261       }
 262       break;
 263
 264     default:
 265         FIXME("Unknown style %x\n", logbrush.lbStyle);
 266         break;
 267     }
 268     return index;
 269 }
 270
 271
 272 /***********************************************************************
 273  *           EMFDRV_SelectBrush
 274  */
 275 HBRUSH EMFDRV_SelectBrush(PHYSDEV dev, HBRUSH hBrush )
 276 {
 277     EMFDRV_PDEVICE *physDev = (EMFDRV_PDEVICE*)dev;
 278     EMRSELECTOBJECT emr;
 279     DWORD index;
 280     int i;
 281
 282     /* If the object is a stock brush object, do not need to create it.
 283      * See definitions in  wingdi.h for range of stock brushes.
 284      * We do however have to handle setting the higher order bit to
 285      * designate that this is a stock object.
 286      */
 287     for (i = WHITE_BRUSH; i <= NULL_BRUSH; i++)
 288     {
 289         if (hBrush == GetStockObject(i))
 290         {
 291             index = i | 0x80000000;
 292             goto found;
 293         }
 294     }
 295     if((index = EMFDRV_FindObject(dev, hBrush)) != 0)
 296         goto found;
 297
 298     if (!(index = EMFDRV_CreateBrushIndirect(dev, hBrush ))) return 0;
 299     GDI_hdc_using_object(hBrush, physDev->hdc);
 300
 301  found:
 302     emr.emr.iType = EMR_SELECTOBJECT;
 303     emr.emr.nSize = sizeof(emr);
 304     emr.ihObject = index;
 305     return EMFDRV_WriteRecord( dev, &emr.emr ) ? hBrush : 0;
 306 }
 307
 308
 309 /******************************************************************
 310  *         EMFDRV_CreateFontIndirect
 311  */
 312 static BOOL EMFDRV_CreateFontIndirect(PHYSDEV dev, HFONT hFont )
 313 {
 314     DWORD index = 0;
 315     EMREXTCREATEFONTINDIRECTW emr;
 316     int i;
 317
 318     if (!GetObjectW( hFont, sizeof(emr.elfw.elfLogFont), &emr.elfw.elfLogFont )) return 0;
 319
 320     emr.emr.iType = EMR_EXTCREATEFONTINDIRECTW;
 321     emr.emr.nSize = (sizeof(emr) + 3) / 4 * 4;
 322     emr.ihFont = index = EMFDRV_AddHandle( dev, hFont );
 323     emr.elfw.elfFullName[0] = '\0';
 324     emr.elfw.elfStyle[0]    = '\0';
 325     emr.elfw.elfVersion     = 0;
 326     emr.elfw.elfStyleSize   = 0;
 327     emr.elfw.elfMatch       = 0;
 328     emr.elfw.elfReserved    = 0;
 329     for(i = 0; i < ELF_VENDOR_SIZE; i++)
 330         emr.elfw.elfVendorId[i] = 0;
 331     emr.elfw.elfCulture                 = PAN_CULTURE_LATIN;
 332     emr.elfw.elfPanose.bFamilyType      = PAN_NO_FIT;
 333     emr.elfw.elfPanose.bSerifStyle      = PAN_NO_FIT;
 334     emr.elfw.elfPanose.bWeight          = PAN_NO_FIT;
 335     emr.elfw.elfPanose.bProportion      = PAN_NO_FIT;
 336     emr.elfw.elfPanose.bContrast        = PAN_NO_FIT;
 337     emr.elfw.elfPanose.bStrokeVariation = PAN_NO_FIT;
 338     emr.elfw.elfPanose.bArmStyle        = PAN_NO_FIT;
 339     emr.elfw.elfPanose.bLetterform      = PAN_NO_FIT;
 340     emr.elfw.elfPanose.bMidline         = PAN_NO_FIT;
 341     emr.elfw.elfPanose.bXHeight         = PAN_NO_FIT;
 342
 343     if(!EMFDRV_WriteRecord( dev, &emr.emr ))
 344         index = 0;
 345     return index;
 346 }
 347
 348
 349 /***********************************************************************
 350  *           EMFDRV_SelectFont
 351  */
 352 HFONT EMFDRV_SelectFont( PHYSDEV dev, HFONT hFont, HANDLE gdiFont )
 353 {
 354     EMFDRV_PDEVICE *physDev = (EMFDRV_PDEVICE*)dev;
 355     EMRSELECTOBJECT emr;
 356     DWORD index;
 357     int i;
 358
 359     /* If the object is a stock font object, do not need to create it.
 360      * See definitions in  wingdi.h for range of stock fonts.
 361      * We do however have to handle setting the higher order bit to
 362      * designate that this is a stock object.
 363      */
 364
 365     for (i = OEM_FIXED_FONT; i <= DEFAULT_GUI_FONT; i++)
 366     {
 367         if (i != DEFAULT_PALETTE && hFont == GetStockObject(i))
 368         {
 369             index = i | 0x80000000;
 370             goto found;
 371         }
 372     }
 373
 374     if((index = EMFDRV_FindObject(dev, hFont)) != 0)
 375         goto found;
 376
 377     if (!(index = EMFDRV_CreateFontIndirect(dev, hFont ))) return HGDI_ERROR;
 378     GDI_hdc_using_object(hFont, physDev->hdc);
 379
 380  found:
 381     emr.emr.iType = EMR_SELECTOBJECT;
 382     emr.emr.nSize = sizeof(emr);
 383     emr.ihObject = index;
 384     if(!EMFDRV_WriteRecord( dev, &emr.emr ))
 385         return HGDI_ERROR;
 386     return 0;
 387 }
 388
 389
 390
 391 /******************************************************************
 392  *         EMFDRV_CreatePenIndirect
 393  */
 394 static HPEN EMFDRV_CreatePenIndirect(PHYSDEV dev, HPEN hPen )
 395 {
 396     EMRCREATEPEN emr;
 397     DWORD index = 0;
 398
 399     if (!GetObjectA( hPen, sizeof(emr.lopn), &emr.lopn )) return 0;
 400
 401     emr.emr.iType = EMR_CREATEPEN;
 402     emr.emr.nSize = sizeof(emr);
 403     emr.ihPen = index = EMFDRV_AddHandle( dev, hPen );
 404
 405     if(!EMFDRV_WriteRecord( dev, &emr.emr ))
 406         index = 0;
 407     return (HPEN)index;
 408 }
 409
 410 /******************************************************************
 411  *         EMFDRV_SelectPen
 412  */
 413 HPEN EMFDRV_SelectPen(PHYSDEV dev, HPEN hPen )
 414 {
 415     EMFDRV_PDEVICE *physDev = (EMFDRV_PDEVICE*)dev;
 416     EMRSELECTOBJECT emr;
 417     DWORD index;
 418     int i;
 419
 420     /* If the object is a stock pen object, do not need to create it.
 421      * See definitions in  wingdi.h for range of stock pens.
 422      * We do however have to handle setting the higher order bit to
 423      * designate that this is a stock object.
 424      */
 425
 426     for (i = WHITE_PEN; i <= NULL_PEN; i++)
 427     {
 428         if (hPen == GetStockObject(i))
 429         {
 430             index = i | 0x80000000;
 431             goto found;
 432         }
 433     }
 434     if((index = EMFDRV_FindObject(dev, hPen)) != 0)
 435         goto found;
 436
 437     if (!(index = (DWORD)EMFDRV_CreatePenIndirect(dev, hPen ))) return 0;
 438     GDI_hdc_using_object(hPen, physDev->hdc);
 439
 440  found:
 441     emr.emr.iType = EMR_SELECTOBJECT;
 442     emr.emr.nSize = sizeof(emr);
 443     emr.ihObject = index;
 444     return EMFDRV_WriteRecord( dev, &emr.emr ) ? hPen : 0;
 445 }
 446
 447
 448 /******************************************************************
 449  *         EMFDRV_GdiComment
 450  */
 451 BOOL EMFDRV_GdiComment(PHYSDEV dev, UINT bytes, CONST BYTE *buffer)
 452 {
 453     EMRGDICOMMENT *emr;
 454     UINT total, rounded_size;
 455     BOOL ret;
 456
 457     rounded_size = (bytes+3) & ~3;
 458     total = offsetof(EMRGDICOMMENT,Data) + rounded_size;
 459
 460     emr = HeapAlloc(GetProcessHeap(), 0, total);
 461     emr->emr.iType = EMR_GDICOMMENT;
 462     emr->emr.nSize = total;
 463     emr->cbData = bytes;
 464     memset(&emr->Data[bytes], 0, rounded_size - bytes);
 465     memcpy(&emr->Data[0], buffer, bytes);
 466
 467     ret = EMFDRV_WriteRecord( dev, &emr->emr );
 468
 469     HeapFree(GetProcessHeap(), 0, emr);
 470
 471     return ret;
 472 }