objects/bitmap.c

   1 /*
   2  * GDI bitmap objects
   3  *
   4  * Copyright 1993 Alexandre Julliard
   5  *           1998 Huw D M Davies
   6  */
   7
   8 #include <stdlib.h>
   9 #include <string.h>
  10
  11 #include "wine/winbase16.h"
  12 #include "gdi.h"
  13 #include "dc.h"
  14 #include "bitmap.h"
  15 #include "heap.h"
  16 #include "global.h"
  17 #include "sysmetrics.h"
  18 #include "cursoricon.h"
  19 #include "debug.h"
  20 #include "monitor.h"
  21 #include "wine/winuser16.h"
  22
  23 /***********************************************************************
  24  *           BITMAP_GetPadding
  25  *
  26  * Return number of bytes to pad a scanline of 16-bit aligned Windows DDB data.
  27  */
  28 INT BITMAP_GetPadding( int bmWidth, int bpp )
  29 {
  30     INT pad;
  31
  32     switch (bpp)
  33     {
  34     case 1:
  35         pad = ((bmWidth-1) & 8) ? 0 : 1;
  36         break;
  37
  38     case 8:
  39         pad = (2 - (bmWidth & 1)) & 1;
  40         break;
  41
  42     case 24:
  43         pad = (bmWidth*3) & 1;
  44         break;
  45
  46     case 32:
  47     case 16:
  48     case 15:
  49         pad = 0; /* we have 16bit alignment already */
  50         break;
  51
  52     case 4:
  53         if (!(bmWidth & 3)) pad = 0;
  54         else pad = ((4 - (bmWidth & 3)) + 1) / 2;
  55         break;
  56
  57     default:
  58         WARN(bitmap,"Unknown depth %d, please report.\n", bpp );
  59         return -1;
  60     }
  61     return pad;
  62 }
  63
  64 /***********************************************************************
  65  *           BITMAP_GetWidthBytes
  66  *
  67  * Return number of bytes taken by a scanline of 16-bit aligned Windows DDB
  68  * data.
  69  */
  70 INT BITMAP_GetWidthBytes( INT bmWidth, INT bpp )
  71 {
  72     switch(bpp)
  73     {
  74     case 1:
  75         return 2 * ((bmWidth+15) >> 4);
  76
  77     case 24:
  78         bmWidth *= 3; /* fall through */
  79     case 8:
  80         return bmWidth + (bmWidth & 1);
  81
  82     case 32:
  83         return bmWidth * 4;
  84
  85     case 16:
  86     case 15:
  87         return bmWidth * 2;
  88
  89     case 4:
  90         return 2 * ((bmWidth+3) >> 2);
  91
  92     default:
  93         WARN(bitmap,"Unknown depth %d, please report.\n", bpp );
  94     }
  95     return -1;
  96 }
  97
  98 /***********************************************************************
  99  *           CreateUserBitmap16    (GDI.407)
 100  */
 101 HBITMAP16 WINAPI CreateUserBitmap16( INT16 width, INT16 height, UINT16 planes,
 102                                      UINT16 bpp, LPCVOID bits )
 103 {
 104     return CreateBitmap16( width, height, planes, bpp, bits );
 105 }
 106
 107 /***********************************************************************
 108  *           CreateUserDiscardableBitmap16    (GDI.409)
 109  */
 110 HBITMAP16 WINAPI CreateUserDiscardableBitmap16( WORD dummy,
 111                                                 INT16 width, INT16 height )
 112 {
 113     return CreateUserBitmap16( width, height, 1, MONITOR_GetDepth(&MONITOR_PrimaryMonitor), NULL );
 114 }
 115
 116
 117 /***********************************************************************
 118  *           CreateBitmap16    (GDI.48)
 119  */
 120 HBITMAP16 WINAPI CreateBitmap16( INT16 width, INT16 height, UINT16 planes,
 121                                  UINT16 bpp, LPCVOID bits )
 122 {
 123     return CreateBitmap( width, height, planes, bpp, bits );
 124 }
 125
 126
 127 /******************************************************************************
 128  * CreateBitmap32 [GDI32.25]  Creates a bitmap with the specified info
 129  *
 130  * PARAMS
 131  *    width  [I] bitmap width
 132  *    height [I] bitmap height
 133  *    planes [I] Number of color planes
 134  *    bpp    [I] Number of bits to identify a color
 135  *    bits   [I] Pointer to array containing color data
 136  *
 137  * RETURNS
 138  *    Success: Handle to bitmap
 139  *    Failure: 0
 140  */
 141 HBITMAP WINAPI CreateBitmap( INT width, INT height, UINT planes,
 142                                  UINT bpp, LPCVOID bits )
 143 {
 144     BITMAPOBJ *bmp;
 145     HBITMAP hbitmap;
 146
 147     planes = (BYTE)planes;
 148     bpp    = (BYTE)bpp;
 149
 150
 151       /* Check parameters */
 152     if (!height || !width) return 0;
 153     if (planes != 1) {
 154         FIXME(bitmap, "planes = %d\n", planes);
 155         return 0;
 156     }
 157     if (height < 0) height = -height;
 158     if (width < 0) width = -width;
 159
 160       /* Create the BITMAPOBJ */
 161     hbitmap = GDI_AllocObject( sizeof(BITMAPOBJ), BITMAP_MAGIC );
 162     if (!hbitmap) return 0;
 163
 164     TRACE(bitmap, "%dx%d, %d colors returning %08x\n", width, height,
 165           1 << (planes*bpp), hbitmap);
 166
 167     bmp = (BITMAPOBJ *) GDI_HEAP_LOCK( hbitmap );
 168
 169     bmp->size.cx = 0;
 170     bmp->size.cy = 0;
 171     bmp->bitmap.bmType = 0;
 172     bmp->bitmap.bmWidth = width;
 173     bmp->bitmap.bmHeight = height;
 174     bmp->bitmap.bmPlanes = planes;
 175     bmp->bitmap.bmBitsPixel = bpp;
 176     bmp->bitmap.bmWidthBytes = BITMAP_GetWidthBytes( width, bpp );
 177     bmp->bitmap.bmBits = NULL;
 178
 179     bmp->DDBitmap = NULL;
 180     bmp->dib = NULL;
 181
 182     if (bits) /* Set bitmap bits */
 183         SetBitmapBits( hbitmap, height * bmp->bitmap.bmWidthBytes,
 184                          bits );
 185     GDI_HEAP_UNLOCK( hbitmap );
 186     return hbitmap;
 187 }
 188
 189
 190 /***********************************************************************
 191  *           CreateCompatibleBitmap16    (GDI.51)
 192  */
 193 HBITMAP16 WINAPI CreateCompatibleBitmap16(HDC16 hdc, INT16 width, INT16 height)
 194 {
 195     return CreateCompatibleBitmap( hdc, width, height );
 196 }
 197
 198
 199 /******************************************************************************
 200  * CreateCompatibleBitmap32 [GDI32.30]  Creates a bitmap compatible with the DC
 201  *
 202  * PARAMS
 203  *    hdc    [I] Handle to device context
 204  *    width  [I] Width of bitmap
 205  *    height [I] Height of bitmap
 206  *
 207  * RETURNS
 208  *    Success: Handle to bitmap
 209  *    Failure: 0
 210  */
 211 HBITMAP WINAPI CreateCompatibleBitmap( HDC hdc, INT width, INT height)
 212 {
 213     HBITMAP hbmpRet = 0;
 214     DC *dc;
 215
 216     TRACE(bitmap, "(%04x,%d,%d) = \n", hdc, width, height );
 217     if (!(dc = DC_GetDCPtr( hdc ))) return 0;
 218     if ((width >= 0x10000) || (height >= 0x10000)) {
 219         FIXME(bitmap,"got bad width %d or height %d, please look for reason\n",
 220               width, height );
 221     } else {
 222         hbmpRet = CreateBitmap( width, height, 1, dc->w.bitsPerPixel, NULL );
 223         if(dc->funcs->pCreateBitmap)
 224             dc->funcs->pCreateBitmap( hbmpRet );
 225     }
 226     TRACE(bitmap,"\t\t%04x\n", hbmpRet);
 227     GDI_HEAP_UNLOCK(hdc);
 228     return hbmpRet;
 229 }
 230
 231
 232 /***********************************************************************
 233  *           CreateBitmapIndirect16    (GDI.49)
 234  */
 235 HBITMAP16 WINAPI CreateBitmapIndirect16( const BITMAP16 * bmp )
 236 {
 237     return CreateBitmap16( bmp->bmWidth, bmp->bmHeight, bmp->bmPlanes,
 238                            bmp->bmBitsPixel, PTR_SEG_TO_LIN( bmp->bmBits ) );
 239 }
 240
 241
 242 /******************************************************************************
 243  * CreateBitmapIndirect32 [GDI32.26]  Creates a bitmap with the specifies info
 244  *
 245  * RETURNS
 246  *    Success: Handle to bitmap
 247  *    Failure: NULL
 248  */
 249 HBITMAP WINAPI CreateBitmapIndirect(
 250     const BITMAP * bmp) /* [in] Pointer to the bitmap data */
 251 {
 252     return CreateBitmap( bmp->bmWidth, bmp->bmHeight, bmp->bmPlanes,
 253                            bmp->bmBitsPixel, bmp->bmBits );
 254 }
 255
 256
 257 /***********************************************************************
 258  *           GetBitmapBits16    (GDI.74)
 259  */
 260 LONG WINAPI GetBitmapBits16( HBITMAP16 hbitmap, LONG count, LPVOID buffer )
 261 {
 262     return GetBitmapBits( hbitmap, count, buffer );
 263 }
 264
 265
 266 /***********************************************************************
 267  * GetBitmapBits32 [GDI32.143]  Copies bitmap bits of bitmap to buffer
 268  *
 269  * RETURNS
 270  *    Success: Number of bytes copied
 271  *    Failure: 0
 272  */
 273 LONG WINAPI GetBitmapBits(
 274     HBITMAP hbitmap, /* [in]  Handle to bitmap */
 275     LONG count,        /* [in]  Number of bytes to copy */
 276     LPVOID bits)       /* [out] Pointer to buffer to receive bits */
 277 {
 278     BITMAPOBJ *bmp = (BITMAPOBJ *) GDI_GetObjPtr( hbitmap, BITMAP_MAGIC );
 279     LONG height, ret;
 280
 281     if (!bmp) return 0;
 282
 283     if (count < 0) {
 284         WARN(bitmap, "(%ld): Negative number of bytes passed???\n", count );
 285         count = -count;
 286     }
 287
 288     /* Only get entire lines */
 289     height = count / bmp->bitmap.bmWidthBytes;
 290     if (height > bmp->bitmap.bmHeight) height = bmp->bitmap.bmHeight;
 291     count = height * bmp->bitmap.bmWidthBytes;
 292     if (count == 0)
 293       {
 294         WARN(bitmap, "Less then one entire line requested\n");
 295         GDI_HEAP_UNLOCK( hbitmap );
 296         return 0;
 297       }
 298
 299
 300     TRACE(bitmap, "(%08x, %ld, %p) %dx%d %d colors fetched height: %ld\n",
 301             hbitmap, count, bits, bmp->bitmap.bmWidth, bmp->bitmap.bmHeight,
 302             1 << bmp->bitmap.bmBitsPixel, height );
 303
 304     if(bmp->DDBitmap) {
 305
 306         TRACE(bitmap, "Calling device specific BitmapBits\n");
 307         if(bmp->DDBitmap->funcs->pBitmapBits)
 308             ret = bmp->DDBitmap->funcs->pBitmapBits(hbitmap, bits, count,
 309                                                     DDB_GET);
 310         else {
 311             ERR(bitmap, "BitmapBits == NULL??\n");
 312             ret = 0;
 313         }
 314
 315     } else {
 316
 317         if(!bmp->bitmap.bmBits) {
 318             WARN(bitmap, "Bitmap is empty\n");
 319             ret = 0;
 320         } else {
 321             memcpy(bits, bmp->bitmap.bmBits, count);
 322             ret = count;
 323         }
 324
 325     }
 326
 327     GDI_HEAP_UNLOCK( hbitmap );
 328     return ret;
 329 }
 330
 331
 332 /***********************************************************************
 333  *           SetBitmapBits16    (GDI.106)
 334  */
 335 LONG WINAPI SetBitmapBits16( HBITMAP16 hbitmap, LONG count, LPCVOID buffer )
 336 {
 337     return SetBitmapBits( hbitmap, count, buffer );
 338 }
 339
 340
 341 /******************************************************************************
 342  * SetBitmapBits32 [GDI32.303]  Sets bits of color data for a bitmap
 343  *
 344  * RETURNS
 345  *    Success: Number of bytes used in setting the bitmap bits
 346  *    Failure: 0
 347  */
 348 LONG WINAPI SetBitmapBits(
 349     HBITMAP hbitmap, /* [in] Handle to bitmap */
 350     LONG count,        /* [in] Number of bytes in bitmap array */
 351     LPCVOID bits)      /* [in] Address of array with bitmap bits */
 352 {
 353     BITMAPOBJ *bmp = (BITMAPOBJ *) GDI_GetObjPtr( hbitmap, BITMAP_MAGIC );
 354     LONG height, ret;
 355
 356     if (!bmp) return 0;
 357
 358     if (count < 0) {
 359         WARN(bitmap, "(%ld): Negative number of bytes passed???\n", count );
 360         count = -count;
 361     }
 362
 363     /* Only get entire lines */
 364     height = count / bmp->bitmap.bmWidthBytes;
 365     if (height > bmp->bitmap.bmHeight) height = bmp->bitmap.bmHeight;
 366     count = height * bmp->bitmap.bmWidthBytes;
 367
 368     TRACE(bitmap, "(%08x, %ld, %p) %dx%d %d colors fetched height: %ld\n",
 369             hbitmap, count, bits, bmp->bitmap.bmWidth, bmp->bitmap.bmHeight,
 370             1 << bmp->bitmap.bmBitsPixel, height );
 371
 372     if(bmp->DDBitmap) {
 373
 374         TRACE(bitmap, "Calling device specific BitmapBits\n");
 375         if(bmp->DDBitmap->funcs->pBitmapBits)
 376             ret = bmp->DDBitmap->funcs->pBitmapBits(hbitmap, (void *) bits,
 377                                                     count, DDB_SET);
 378         else {
 379             ERR(bitmap, "BitmapBits == NULL??\n");
 380             ret = 0;
 381         }
 382
 383     } else {
 384
 385         if(!bmp->bitmap.bmBits) /* Alloc enough for entire bitmap */
 386             bmp->bitmap.bmBits = HeapAlloc( GetProcessHeap(), 0, count );
 387         if(!bmp->bitmap.bmBits) {
 388             WARN(bitmap, "Unable to allocate bit buffer\n");
 389             ret = 0;
 390         } else {
 391             memcpy(bmp->bitmap.bmBits, bits, count);
 392             ret = count;
 393         }
 394     }
 395
 396     GDI_HEAP_UNLOCK( hbitmap );
 397     return ret;
 398 }
 399
 400 /***********************************************************************
 401  * LoadImage16 [USER.389]
 402  *
 403  */
 404 HANDLE16 WINAPI LoadImage16( HINSTANCE16 hinst, LPCSTR name, UINT16 type,
 405                              INT16 desiredx, INT16 desiredy, UINT16 loadflags)
 406 {
 407         if (HIWORD(name)) {
 408             TRACE(resource,"(0x%04x,%s,%d,%d,%d,0x%08x)\n",
 409                 hinst,(char *)PTR_SEG_TO_LIN(name),type,desiredx,desiredy,loadflags);
 410         } else {
 411             TRACE(resource,"LoadImage16(0x%04x,%p,%d,%d,%d,0x%08x)\n",
 412                 hinst,name,type,desiredx,desiredy,loadflags);
 413         }
 414         switch (type) {
 415         case IMAGE_BITMAP:
 416                 return LoadBitmap16(hinst,(SEGPTR)name);
 417         case IMAGE_ICON:
 418                 return LoadIcon16(hinst,(SEGPTR)name);
 419         case IMAGE_CURSOR:
 420                 return LoadCursor16(hinst,(SEGPTR)name);
 421         }
 422         return 0;
 423
 424 }
 425
 426 /**********************************************************************
 427  *          LoadImage32A    (USER32.365)
 428  *
 429  * FIXME: implementation lacks some features, see LR_ defines in windows.h
 430  */
 431
 432 HANDLE WINAPI LoadImageA( HINSTANCE hinst, LPCSTR name, UINT type,
 433                               INT desiredx, INT desiredy, UINT loadflags)
 434 {
 435     HANDLE res;
 436     LPWSTR u_name;
 437
 438     if (HIWORD(name)) u_name = HEAP_strdupAtoW(GetProcessHeap(), 0, name);
 439     else u_name=(LPWSTR)name;
 440     res = LoadImageW(hinst, u_name, type, desiredx, desiredy, loadflags);
 441     if (HIWORD(name)) HeapFree(GetProcessHeap(), 0, u_name);
 442     return res;
 443 }
 444
 445
 446 /******************************************************************************
 447  * LoadImage32W [USER32.366]  Loads an icon, cursor, or bitmap
 448  *
 449  * PARAMS
 450  *    hinst     [I] Handle of instance that contains image
 451  *    name      [I] Name of image
 452  *    type      [I] Type of image
 453  *    desiredx  [I] Desired width
 454  *    desiredy  [I] Desired height
 455  *    loadflags [I] Load flags
 456  *
 457  * RETURNS
 458  *    Success: Handle to newly loaded image
 459  *    Failure: NULL
 460  *
 461  * FIXME: Implementation lacks some features, see LR_ defines in windows.h
 462  */
 463 HANDLE WINAPI LoadImageW( HINSTANCE hinst, LPCWSTR name, UINT type,
 464                 INT desiredx, INT desiredy, UINT loadflags )
 465 {
 466     if (HIWORD(name)) {
 467         TRACE(resource,"(0x%04x,%p,%d,%d,%d,0x%08x)\n",
 468               hinst,name,type,desiredx,desiredy,loadflags);
 469     } else {
 470         TRACE(resource,"(0x%04x,%p,%d,%d,%d,0x%08x)\n",
 471               hinst,name,type,desiredx,desiredy,loadflags);
 472     }
 473     if (loadflags & LR_DEFAULTSIZE) {
 474         if (type == IMAGE_ICON) {
 475             if (!desiredx) desiredx = SYSMETRICS_CXICON;
 476             if (!desiredy) desiredy = SYSMETRICS_CYICON;
 477         } else if (type == IMAGE_CURSOR) {
 478             if (!desiredx) desiredx = SYSMETRICS_CXCURSOR;
 479             if (!desiredy) desiredy = SYSMETRICS_CYCURSOR;
 480         }
 481     }
 482     if (loadflags & LR_LOADFROMFILE) loadflags &= ~LR_SHARED;
 483     switch (type) {
 484     case IMAGE_BITMAP:
 485         return BITMAP_LoadBitmapW(hinst, name, loadflags);
 486
 487     case IMAGE_ICON:
 488         {
 489         HDC hdc = GetDC(0);
 490         UINT palEnts = GetSystemPaletteEntries(hdc, 0, 0, NULL);
 491         ReleaseDC(0, hdc);
 492
 493         return CURSORICON_Load(hinst, name, desiredx, desiredy,
 494                                  MIN(16, palEnts), FALSE, loadflags);
 495         }
 496
 497     case IMAGE_CURSOR:
 498         return CURSORICON_Load(hinst, name, desiredx, desiredy,
 499                                  1, TRUE, loadflags);
 500     }
 501     return 0;
 502 }
 503
 504
 505 /**********************************************************************
 506  *              BITMAP_CopyBitmap
 507  *
 508  */
 509 HBITMAP BITMAP_CopyBitmap(HBITMAP hbitmap)
 510 {
 511     BITMAPOBJ *bmp = (BITMAPOBJ *) GDI_GetObjPtr( hbitmap, BITMAP_MAGIC );
 512     HBITMAP res = 0;
 513     BITMAP bm;
 514
 515     if(!bmp) return 0;
 516
 517     bm = bmp->bitmap;
 518     bm.bmBits = NULL;
 519     res = CreateBitmapIndirect(&bm);
 520
 521     if(res) {
 522         char *buf = HeapAlloc( GetProcessHeap(), 0, bm.bmWidthBytes *
 523                                bm.bmHeight );
 524         GetBitmapBits (hbitmap, bm.bmWidthBytes * bm.bmHeight, buf);
 525         SetBitmapBits (res, bm.bmWidthBytes * bm.bmHeight, buf);
 526         HeapFree( GetProcessHeap(), 0, buf );
 527     }
 528
 529     GDI_HEAP_UNLOCK( hbitmap );
 530     return res;
 531 }
 532
 533 /******************************************************************************
 534  * CopyImage16 [USER.390]  Creates new image and copies attributes to it
 535  *
 536  */
 537 HICON16 WINAPI CopyImage16( HANDLE16 hnd, UINT16 type, INT16 desiredx,
 538                              INT16 desiredy, UINT16 flags )
 539 {
 540     return (HICON16)CopyImage((HANDLE)hnd, (UINT)type, (INT)desiredx,
 541                                 (INT)desiredy, (UINT)flags);
 542 }
 543
 544 /******************************************************************************
 545  * CopyImage32 [USER32.61]  Creates new image and copies attributes to it
 546  *
 547  * PARAMS
 548  *    hnd      [I] Handle to image to copy
 549  *    type     [I] Type of image to copy
 550  *    desiredx [I] Desired width of new image
 551  *    desiredy [I] Desired height of new image
 552  *    flags    [I] Copy flags
 553  *
 554  * RETURNS
 555  *    Success: Handle to newly created image
 556  *    Failure: NULL
 557  *
 558  * FIXME: implementation still lacks nearly all features, see LR_*
 559  * defines in windows.h
 560  */
 561 HICON WINAPI CopyImage( HANDLE hnd, UINT type, INT desiredx,
 562                              INT desiredy, UINT flags )
 563 {
 564     switch (type)
 565     {
 566         case IMAGE_BITMAP:
 567                 return BITMAP_CopyBitmap(hnd);
 568         case IMAGE_ICON:
 569                 return CopyIcon(hnd);
 570         case IMAGE_CURSOR:
 571                 return CopyCursor(hnd);
 572     }
 573     return 0;
 574 }
 575
 576 /**********************************************************************
 577  *          LoadBitmap16    (USER.175)
 578  *
 579  * NOTES
 580  *    Can this call LoadBitmap32?
 581  */
 582 HBITMAP16 WINAPI LoadBitmap16( HINSTANCE16 instance, SEGPTR name )
 583 {
 584     HBITMAP hbitmap = 0;
 585     HDC hdc;
 586     HRSRC16 hRsrc;
 587     HGLOBAL16 handle;
 588     BITMAPINFO *info;
 589
 590     if (HIWORD(name))
 591     {
 592         char *str = (char *)PTR_SEG_TO_LIN( name );
 593         TRACE(bitmap, "(%04x,'%s')\n", instance, str );
 594         if (str[0] == '#') name = (SEGPTR)(DWORD)(WORD)atoi( str + 1 );
 595     }
 596     else
 597         TRACE(bitmap, "(%04x,%04x)\n",
 598                         instance, LOWORD(name) );
 599
 600     if (!instance)  /* OEM bitmap */
 601     {
 602         HDC hdc;
 603         DC *dc;
 604
 605         if (HIWORD((int)name)) return 0;
 606         hdc = CreateDCA( "DISPLAY", NULL, NULL, NULL );
 607         dc = DC_GetDCPtr( hdc );
 608         if(dc->funcs->pLoadOEMResource)
 609           hbitmap = dc->funcs->pLoadOEMResource( LOWORD((int)name),
 610                                                  OEM_BITMAP );
 611         GDI_HEAP_UNLOCK( hdc );
 612         DeleteDC( hdc );
 613         return hbitmap;
 614     }
 615
 616     if (!(hRsrc = FindResource16( instance, name, RT_BITMAP16 ))) return 0;
 617     if (!(handle = LoadResource16( instance, hRsrc ))) return 0;
 618
 619     info = (BITMAPINFO *)LockResource16( handle );
 620     if ((hdc = GetDC(0)) != 0)
 621     {
 622         char *bits = (char *)info + DIB_BitmapInfoSize( info, DIB_RGB_COLORS );
 623         hbitmap = CreateDIBitmap( hdc, &info->bmiHeader, CBM_INIT,
 624                                     bits, info, DIB_RGB_COLORS );
 625         ReleaseDC( 0, hdc );
 626     }
 627     FreeResource16( handle );
 628     return hbitmap;
 629 }
 630
 631
 632 /**********************************************************************
 633  *       BITMAP_LoadBitmap32W
 634  */
 635 HBITMAP BITMAP_LoadBitmapW(HINSTANCE instance,LPCWSTR name,
 636                                UINT loadflags)
 637 {
 638     HBITMAP hbitmap = 0;
 639     HDC hdc;
 640     HRSRC hRsrc;
 641     HGLOBAL handle;
 642     char *ptr = NULL;
 643     BITMAPINFO *info, *fix_info=NULL;
 644     HGLOBAL hFix;
 645     int size;
 646
 647     if (!(loadflags & LR_LOADFROMFILE)) {
 648       if (!instance)  /* OEM bitmap */
 649       {
 650           HDC hdc;
 651           DC *dc;
 652
 653           if (HIWORD((int)name)) return 0;
 654           hdc = CreateDCA( "DISPLAY", NULL, NULL, NULL );
 655           dc = DC_GetDCPtr( hdc );
 656           if(dc->funcs->pLoadOEMResource)
 657               hbitmap = dc->funcs->pLoadOEMResource( LOWORD((int)name),
 658                                                      OEM_BITMAP );
 659           GDI_HEAP_UNLOCK( hdc );
 660           DeleteDC( hdc );
 661           return hbitmap;
 662       }
 663
 664       if (!(hRsrc = FindResourceW( instance, name, RT_BITMAPW ))) return 0;
 665       if (!(handle = LoadResource( instance, hRsrc ))) return 0;
 666
 667       if ((info = (BITMAPINFO *)LockResource( handle )) == NULL) return 0;
 668     }
 669     else
 670     {
 671         if (!(ptr = (char *)VIRTUAL_MapFileW( name ))) return 0;
 672         info = (BITMAPINFO *)(ptr + sizeof(BITMAPFILEHEADER));
 673     }
 674     size = DIB_BitmapInfoSize(info, DIB_RGB_COLORS);
 675     if ((hFix = GlobalAlloc(0, size))) fix_info=GlobalLock(hFix);
 676     if (fix_info) {
 677       BYTE pix;
 678
 679       memcpy(fix_info, info, size);
 680       pix = *((LPBYTE)info+DIB_BitmapInfoSize(info, DIB_RGB_COLORS));
 681       DIB_FixColorsToLoadflags(fix_info, loadflags, pix);
 682       if ((hdc = GetDC(0)) != 0) {
 683         if (loadflags & LR_CREATEDIBSECTION)
 684           hbitmap = CreateDIBSection(hdc, fix_info, DIB_RGB_COLORS, NULL, 0, 0);
 685         else {
 686           char *bits = (char *)info + size;;
 687           hbitmap = CreateDIBitmap( hdc, &fix_info->bmiHeader, CBM_INIT,
 688                                       bits, fix_info, DIB_RGB_COLORS );
 689         }
 690         ReleaseDC( 0, hdc );
 691       }
 692       GlobalUnlock(hFix);
 693       GlobalFree(hFix);
 694     }
 695     if (loadflags & LR_LOADFROMFILE) UnmapViewOfFile( ptr );
 696     return hbitmap;
 697 }
 698
 699
 700 /******************************************************************************
 701  * LoadBitmap32W [USER32.358]  Loads bitmap from the executable file
 702  *
 703  * RETURNS
 704  *    Success: Handle to specified bitmap
 705  *    Failure: NULL
 706  */
 707 HBITMAP WINAPI LoadBitmapW(
 708     HINSTANCE instance, /* [in] Handle to application instance */
 709     LPCWSTR name)         /* [in] Address of bitmap resource name */
 710 {
 711     return BITMAP_LoadBitmapW(instance, name, 0);
 712 }
 713
 714
 715 /**********************************************************************
 716  *          LoadBitmap32A   (USER32.357)
 717  */
 718 HBITMAP WINAPI LoadBitmapA( HINSTANCE instance, LPCSTR name )
 719 {
 720     HBITMAP res;
 721     if (!HIWORD(name)) res = LoadBitmapW( instance, (LPWSTR)name );
 722     else
 723     {
 724         LPWSTR uni = HEAP_strdupAtoW( GetProcessHeap(), 0, name );
 725         res = LoadBitmapW( instance, uni );
 726         HeapFree( GetProcessHeap(), 0, uni );
 727     }
 728     return res;
 729 }
 730
 731
 732 /***********************************************************************
 733  *           BITMAP_DeleteObject
 734  */
 735 BOOL BITMAP_DeleteObject( HBITMAP16 hbitmap, BITMAPOBJ * bmp )
 736 {
 737     if( bmp->DDBitmap ) {
 738         if( bmp->DDBitmap->funcs->pDeleteObject )
 739             bmp->DDBitmap->funcs->pDeleteObject( hbitmap );
 740     }
 741
 742     if( bmp->bitmap.bmBits )
 743         HeapFree( GetProcessHeap(), 0, bmp->bitmap.bmBits );
 744
 745     DIB_DeleteDIBSection( bmp );
 746
 747     return GDI_FreeObject( hbitmap );
 748 }
 749
 750
 751 /***********************************************************************
 752  *           BITMAP_GetObject16
 753  */
 754 INT16 BITMAP_GetObject16( BITMAPOBJ * bmp, INT16 count, LPVOID buffer )
 755 {
 756     if (bmp->dib)
 757     {
 758         if ( count <= sizeof(BITMAP16) )
 759         {
 760             BITMAP *bmp32 = &bmp->dib->dibSection.dsBm;
 761             BITMAP16 bmp16;
 762             bmp16.bmType       = bmp32->bmType;
 763             bmp16.bmWidth      = bmp32->bmWidth;
 764             bmp16.bmHeight     = bmp32->bmHeight;
 765             bmp16.bmWidthBytes = bmp32->bmWidthBytes;
 766             bmp16.bmPlanes     = bmp32->bmPlanes;
 767             bmp16.bmBitsPixel  = bmp32->bmBitsPixel;
 768             bmp16.bmBits       = (SEGPTR)0;
 769             memcpy( buffer, &bmp16, count );
 770             return count;
 771         }
 772         else
 773         {
 774             FIXME(bitmap, "not implemented for DIBs: count %d\n", count);
 775             return 0;
 776         }
 777     }
 778     else
 779     {
 780         BITMAP16 bmp16;
 781         bmp16.bmType       = bmp->bitmap.bmType;
 782         bmp16.bmWidth      = bmp->bitmap.bmWidth;
 783         bmp16.bmHeight     = bmp->bitmap.bmHeight;
 784         bmp16.bmWidthBytes = bmp->bitmap.bmWidthBytes;
 785         bmp16.bmPlanes     = bmp->bitmap.bmPlanes;
 786         bmp16.bmBitsPixel  = bmp->bitmap.bmBitsPixel;
 787         bmp16.bmBits       = (SEGPTR)0;
 788         if (count > sizeof(bmp16)) count = sizeof(bmp16);
 789         memcpy( buffer, &bmp16, count );
 790         return count;
 791     }
 792 }
 793
 794
 795 /***********************************************************************
 796  *           BITMAP_GetObject32
 797  */
 798 INT BITMAP_GetObject( BITMAPOBJ * bmp, INT count, LPVOID buffer )
 799 {
 800     if (bmp->dib)
 801     {
 802         if (count < sizeof(DIBSECTION))
 803         {
 804             if (count > sizeof(BITMAP)) count = sizeof(BITMAP);
 805         }
 806         else
 807         {
 808             if (count > sizeof(DIBSECTION)) count = sizeof(DIBSECTION);
 809         }
 810
 811         memcpy( buffer, &bmp->dib->dibSection, count );
 812         return count;
 813     }
 814     else
 815     {
 816         if (count > sizeof(BITMAP)) count = sizeof(BITMAP);
 817         memcpy( buffer, &bmp->bitmap, count );
 818         return count;
 819     }
 820 }
 821
 822
 823 /***********************************************************************
 824  *           CreateDiscardableBitmap16    (GDI.156)
 825  */
 826 HBITMAP16 WINAPI CreateDiscardableBitmap16( HDC16 hdc, INT16 width,
 827                                             INT16 height )
 828 {
 829     return CreateCompatibleBitmap16( hdc, width, height );
 830 }
 831
 832
 833 /******************************************************************************
 834  * CreateDiscardableBitmap32 [GDI32.38]  Creates a discardable bitmap
 835  *
 836  * RETURNS
 837  *    Success: Handle to bitmap
 838  *    Failure: NULL
 839  */
 840 HBITMAP WINAPI CreateDiscardableBitmap(
 841     HDC hdc,    /* [in] Handle to device context */
 842     INT width,  /* [in] Bitmap width */
 843     INT height) /* [in] Bitmap height */
 844 {
 845     return CreateCompatibleBitmap( hdc, width, height );
 846 }
 847
 848
 849 /***********************************************************************
 850  *           GetBitmapDimensionEx16    (GDI.468)
 851  *
 852  * NOTES
 853  *    Can this call GetBitmapDimensionEx32?
 854  */
 855 BOOL16 WINAPI GetBitmapDimensionEx16( HBITMAP16 hbitmap, LPSIZE16 size )
 856 {
 857     BITMAPOBJ * bmp = (BITMAPOBJ *) GDI_GetObjPtr( hbitmap, BITMAP_MAGIC );
 858     if (!bmp) return FALSE;
 859     CONV_SIZE32TO16( &bmp->size, size );
 860     GDI_HEAP_UNLOCK( hbitmap );
 861     return TRUE;
 862 }
 863
 864
 865 /******************************************************************************
 866  * GetBitmapDimensionEx32 [GDI32.144]  Retrieves dimensions of a bitmap
 867  *
 868  * RETURNS
 869  *    Success: TRUE
 870  *    Failure: FALSE
 871  */
 872 BOOL WINAPI GetBitmapDimensionEx(
 873     HBITMAP hbitmap, /* [in]  Handle to bitmap */
 874     LPSIZE size)     /* [out] Address of struct receiving dimensions */
 875 {
 876     BITMAPOBJ * bmp = (BITMAPOBJ *) GDI_GetObjPtr( hbitmap, BITMAP_MAGIC );
 877     if (!bmp) return FALSE;
 878     *size = bmp->size;
 879     GDI_HEAP_UNLOCK( hbitmap );
 880     return TRUE;
 881 }
 882
 883
 884 /***********************************************************************
 885  *           GetBitmapDimension    (GDI.162)
 886  */
 887 DWORD WINAPI GetBitmapDimension16( HBITMAP16 hbitmap )
 888 {
 889     SIZE16 size;
 890     if (!GetBitmapDimensionEx16( hbitmap, &size )) return 0;
 891     return MAKELONG( size.cx, size.cy );
 892 }
 893
 894
 895 /***********************************************************************
 896  *           SetBitmapDimensionEx16    (GDI.478)
 897  */
 898 BOOL16 WINAPI SetBitmapDimensionEx16( HBITMAP16 hbitmap, INT16 x, INT16 y,
 899                                       LPSIZE16 prevSize )
 900 {
 901     BITMAPOBJ * bmp = (BITMAPOBJ *) GDI_GetObjPtr( hbitmap, BITMAP_MAGIC );
 902     if (!bmp) return FALSE;
 903     if (prevSize) CONV_SIZE32TO16( &bmp->size, prevSize );
 904     bmp->size.cx = x;
 905     bmp->size.cy = y;
 906     GDI_HEAP_UNLOCK( hbitmap );
 907     return TRUE;
 908 }
 909
 910
 911 /******************************************************************************
 912  * SetBitmapDimensionEx32 [GDI32.304]  Assignes dimensions to a bitmap
 913  *
 914  * RETURNS
 915  *    Success: TRUE
 916  *    Failure: FALSE
 917  */
 918 BOOL WINAPI SetBitmapDimensionEx(
 919     HBITMAP hbitmap, /* [in]  Handle to bitmap */
 920     INT x,           /* [in]  Bitmap width */
 921     INT y,           /* [in]  Bitmap height */
 922     LPSIZE prevSize) /* [out] Address of structure for orig dims */
 923 {
 924     BITMAPOBJ * bmp = (BITMAPOBJ *) GDI_GetObjPtr( hbitmap, BITMAP_MAGIC );
 925     if (!bmp) return FALSE;
 926     if (prevSize) *prevSize = bmp->size;
 927     bmp->size.cx = x;
 928     bmp->size.cy = y;
 929     GDI_HEAP_UNLOCK( hbitmap );
 930     return TRUE;
 931 }
 932
 933
 934 /***********************************************************************
 935  *           SetBitmapDimension    (GDI.163)
 936  */
 937 DWORD WINAPI SetBitmapDimension16( HBITMAP16 hbitmap, INT16 x, INT16 y )
 938 {
 939     SIZE16 size;
 940     if (!SetBitmapDimensionEx16( hbitmap, x, y, &size )) return 0;
 941     return MAKELONG( size.cx, size.cy );
 942 }
 943