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 "cursoricon.h"
  18 #include "debugtools.h"
  19 #include "wine/winuser16.h"
  20
  21 DEFAULT_DEBUG_CHANNEL(bitmap);
  22
  23 BITMAP_DRIVER *BITMAP_Driver = NULL;
  24
  25
  26 /***********************************************************************
  27  *           BITMAP_GetWidthBytes
  28  *
  29  * Return number of bytes taken by a scanline of 16-bit aligned Windows DDB
  30  * data.
  31  */
  32 INT BITMAP_GetWidthBytes( INT bmWidth, INT bpp )
  33 {
  34     switch(bpp)
  35     {
  36     case 1:
  37         return 2 * ((bmWidth+15) >> 4);
  38
  39     case 24:
  40         bmWidth *= 3; /* fall through */
  41     case 8:
  42         return bmWidth + (bmWidth & 1);
  43
  44     case 32:
  45         return bmWidth * 4;
  46
  47     case 16:
  48     case 15:
  49         return bmWidth * 2;
  50
  51     case 4:
  52         return 2 * ((bmWidth+3) >> 2);
  53
  54     default:
  55         WARN("Unknown depth %d, please report.\n", bpp );
  56     }
  57     return -1;
  58 }
  59
  60 /***********************************************************************
  61  *           CreateUserBitmap16    (GDI.407)
  62  */
  63 HBITMAP16 WINAPI CreateUserBitmap16( INT16 width, INT16 height, UINT16 planes,
  64                                      UINT16 bpp, LPCVOID bits )
  65 {
  66     return CreateBitmap16( width, height, planes, bpp, bits );
  67 }
  68
  69 /***********************************************************************
  70  *           CreateUserDiscardableBitmap16    (GDI.409)
  71  */
  72 HBITMAP16 WINAPI CreateUserDiscardableBitmap16( WORD dummy,
  73                                                 INT16 width, INT16 height )
  74 {
  75     HDC hdc = CreateDCA( "DISPLAY", NULL, NULL, NULL );
  76     HBITMAP16 ret = CreateCompatibleBitmap16( hdc, width, height );
  77     DeleteDC( hdc );
  78     return ret;
  79 }
  80
  81
  82 /***********************************************************************
  83  *           CreateBitmap16    (GDI.48)
  84  */
  85 HBITMAP16 WINAPI CreateBitmap16( INT16 width, INT16 height, UINT16 planes,
  86                                  UINT16 bpp, LPCVOID bits )
  87 {
  88     return CreateBitmap( width, height, planes, bpp, bits );
  89 }
  90
  91
  92 /******************************************************************************
  93  * CreateBitmap [GDI32.25]  Creates a bitmap with the specified info
  94  *
  95  * PARAMS
  96  *    width  [I] bitmap width
  97  *    height [I] bitmap height
  98  *    planes [I] Number of color planes
  99  *    bpp    [I] Number of bits to identify a color
 100  *    bits   [I] Pointer to array containing color data
 101  *
 102  * RETURNS
 103  *    Success: Handle to bitmap
 104  *    Failure: 0
 105  */
 106 HBITMAP WINAPI CreateBitmap( INT width, INT height, UINT planes,
 107                                  UINT bpp, LPCVOID bits )
 108 {
 109     BITMAPOBJ *bmp;
 110     HBITMAP hbitmap;
 111
 112     planes = (BYTE)planes;
 113     bpp    = (BYTE)bpp;
 114
 115
 116       /* Check parameters */
 117     if (!height || !width) return 0;
 118     if (planes != 1) {
 119         FIXME("planes = %d\n", planes);
 120         return 0;
 121     }
 122     if (height < 0) height = -height;
 123     if (width < 0) width = -width;
 124
 125       /* Create the BITMAPOBJ */
 126     hbitmap = GDI_AllocObject( sizeof(BITMAPOBJ), BITMAP_MAGIC );
 127     if (!hbitmap) return 0;
 128
 129     TRACE("%dx%d, %d colors returning %08x\n", width, height,
 130           1 << (planes*bpp), hbitmap);
 131
 132     bmp = (BITMAPOBJ *) GDI_HEAP_LOCK( hbitmap );
 133
 134     bmp->size.cx = 0;
 135     bmp->size.cy = 0;
 136     bmp->bitmap.bmType = 0;
 137     bmp->bitmap.bmWidth = width;
 138     bmp->bitmap.bmHeight = height;
 139     bmp->bitmap.bmPlanes = planes;
 140     bmp->bitmap.bmBitsPixel = bpp;
 141     bmp->bitmap.bmWidthBytes = BITMAP_GetWidthBytes( width, bpp );
 142     bmp->bitmap.bmBits = NULL;
 143
 144     bmp->funcs = NULL;
 145     bmp->physBitmap = NULL;
 146     bmp->dib = NULL;
 147
 148     if (bits) /* Set bitmap bits */
 149         SetBitmapBits( hbitmap, height * bmp->bitmap.bmWidthBytes,
 150                          bits );
 151     GDI_HEAP_UNLOCK( hbitmap );
 152     return hbitmap;
 153 }
 154
 155
 156 /***********************************************************************
 157  *           CreateCompatibleBitmap16    (GDI.51)
 158  */
 159 HBITMAP16 WINAPI CreateCompatibleBitmap16(HDC16 hdc, INT16 width, INT16 height)
 160 {
 161     return CreateCompatibleBitmap( hdc, width, height );
 162 }
 163
 164
 165 /******************************************************************************
 166  * CreateCompatibleBitmap [GDI32.30]  Creates a bitmap compatible with the DC
 167  *
 168  * PARAMS
 169  *    hdc    [I] Handle to device context
 170  *    width  [I] Width of bitmap
 171  *    height [I] Height of bitmap
 172  *
 173  * RETURNS
 174  *    Success: Handle to bitmap
 175  *    Failure: 0
 176  */
 177 HBITMAP WINAPI CreateCompatibleBitmap( HDC hdc, INT width, INT height)
 178 {
 179     HBITMAP hbmpRet = 0;
 180     DC *dc;
 181
 182     TRACE("(%04x,%d,%d) = \n", hdc, width, height );
 183     if (!(dc = DC_GetDCPtr( hdc ))) return 0;
 184     if ((width >= 0x10000) || (height >= 0x10000)) {
 185         FIXME("got bad width %d or height %d, please look for reason\n",
 186               width, height );
 187     } else {
 188         /* MS doc says if width or height is 0, return 1-by-1 pixel, monochrome bitmap */
 189         if (!width || !height)
 190            hbmpRet = CreateBitmap( 1, 1, 1, 1, NULL );
 191         else
 192            hbmpRet = CreateBitmap( width, height, 1, dc->w.bitsPerPixel, NULL );
 193         if(dc->funcs->pCreateBitmap)
 194             dc->funcs->pCreateBitmap( hbmpRet );
 195     }
 196     TRACE("\t\t%04x\n", hbmpRet);
 197     GDI_HEAP_UNLOCK(hdc);
 198     return hbmpRet;
 199 }
 200
 201
 202 /***********************************************************************
 203  *           CreateBitmapIndirect16    (GDI.49)
 204  */
 205 HBITMAP16 WINAPI CreateBitmapIndirect16( const BITMAP16 * bmp )
 206 {
 207     return CreateBitmap16( bmp->bmWidth, bmp->bmHeight, bmp->bmPlanes,
 208                            bmp->bmBitsPixel, PTR_SEG_TO_LIN( bmp->bmBits ) );
 209 }
 210
 211
 212 /******************************************************************************
 213  * CreateBitmapIndirect [GDI32.26]  Creates a bitmap with the specifies info
 214  *
 215  * RETURNS
 216  *    Success: Handle to bitmap
 217  *    Failure: NULL
 218  */
 219 HBITMAP WINAPI CreateBitmapIndirect(
 220     const BITMAP * bmp) /* [in] Pointer to the bitmap data */
 221 {
 222     return CreateBitmap( bmp->bmWidth, bmp->bmHeight, bmp->bmPlanes,
 223                            bmp->bmBitsPixel, bmp->bmBits );
 224 }
 225
 226
 227 /***********************************************************************
 228  *           GetBitmapBits16    (GDI.74)
 229  */
 230 LONG WINAPI GetBitmapBits16( HBITMAP16 hbitmap, LONG count, LPVOID buffer )
 231 {
 232     return GetBitmapBits( hbitmap, count, buffer );
 233 }
 234
 235
 236 /***********************************************************************
 237  * GetBitmapBits [GDI32.143]  Copies bitmap bits of bitmap to buffer
 238  *
 239  * RETURNS
 240  *    Success: Number of bytes copied
 241  *    Failure: 0
 242  */
 243 LONG WINAPI GetBitmapBits(
 244     HBITMAP hbitmap, /* [in]  Handle to bitmap */
 245     LONG count,        /* [in]  Number of bytes to copy */
 246     LPVOID bits)       /* [out] Pointer to buffer to receive bits */
 247 {
 248     BITMAPOBJ *bmp = (BITMAPOBJ *) GDI_GetObjPtr( hbitmap, BITMAP_MAGIC );
 249     LONG height, ret;
 250
 251     if (!bmp) return 0;
 252
 253     /* If the bits vector is null, the function should return the read size */
 254     if(bits == NULL)
 255         return bmp->bitmap.bmWidthBytes * bmp->bitmap.bmHeight;
 256
 257     if (count < 0) {
 258         WARN("(%ld): Negative number of bytes passed???\n", count );
 259         count = -count;
 260     }
 261
 262     /* Only get entire lines */
 263     height = count / bmp->bitmap.bmWidthBytes;
 264     if (height > bmp->bitmap.bmHeight) height = bmp->bitmap.bmHeight;
 265     count = height * bmp->bitmap.bmWidthBytes;
 266     if (count == 0)
 267       {
 268         WARN("Less then one entire line requested\n");
 269         GDI_HEAP_UNLOCK( hbitmap );
 270         return 0;
 271       }
 272
 273
 274     TRACE("(%08x, %ld, %p) %dx%d %d colors fetched height: %ld\n",
 275           hbitmap, count, bits, bmp->bitmap.bmWidth, bmp->bitmap.bmHeight,
 276           1 << bmp->bitmap.bmBitsPixel, height );
 277
 278     if(bmp->funcs) {
 279
 280         TRACE("Calling device specific BitmapBits\n");
 281         if(bmp->funcs->pBitmapBits)
 282             ret = bmp->funcs->pBitmapBits(hbitmap, bits, count, DDB_GET);
 283         else {
 284             ERR("BitmapBits == NULL??\n");
 285             ret = 0;
 286         }
 287
 288     } else {
 289
 290         if(!bmp->bitmap.bmBits) {
 291             WARN("Bitmap is empty\n");
 292             ret = 0;
 293         } else {
 294             memcpy(bits, bmp->bitmap.bmBits, count);
 295             ret = count;
 296         }
 297
 298     }
 299
 300     GDI_HEAP_UNLOCK( hbitmap );
 301     return ret;
 302 }
 303
 304
 305 /***********************************************************************
 306  *           SetBitmapBits16    (GDI.106)
 307  */
 308 LONG WINAPI SetBitmapBits16( HBITMAP16 hbitmap, LONG count, LPCVOID buffer )
 309 {
 310     return SetBitmapBits( hbitmap, count, buffer );
 311 }
 312
 313
 314 /******************************************************************************
 315  * SetBitmapBits [GDI32.303]  Sets bits of color data for a bitmap
 316  *
 317  * RETURNS
 318  *    Success: Number of bytes used in setting the bitmap bits
 319  *    Failure: 0
 320  */
 321 LONG WINAPI SetBitmapBits(
 322     HBITMAP hbitmap, /* [in] Handle to bitmap */
 323     LONG count,        /* [in] Number of bytes in bitmap array */
 324     LPCVOID bits)      /* [in] Address of array with bitmap bits */
 325 {
 326     BITMAPOBJ *bmp = (BITMAPOBJ *) GDI_GetObjPtr( hbitmap, BITMAP_MAGIC );
 327     LONG height, ret;
 328
 329     if ((!bmp) || (!bits))
 330         return 0;
 331
 332     if (count < 0) {
 333         WARN("(%ld): Negative number of bytes passed???\n", count );
 334         count = -count;
 335     }
 336
 337     /* Only get entire lines */
 338     height = count / bmp->bitmap.bmWidthBytes;
 339     if (height > bmp->bitmap.bmHeight) height = bmp->bitmap.bmHeight;
 340     count = height * bmp->bitmap.bmWidthBytes;
 341
 342     TRACE("(%08x, %ld, %p) %dx%d %d colors fetched height: %ld\n",
 343           hbitmap, count, bits, bmp->bitmap.bmWidth, bmp->bitmap.bmHeight,
 344           1 << bmp->bitmap.bmBitsPixel, height );
 345
 346     if(bmp->funcs) {
 347
 348         TRACE("Calling device specific BitmapBits\n");
 349         if(bmp->funcs->pBitmapBits)
 350             ret = bmp->funcs->pBitmapBits(hbitmap, (void *) bits, count, DDB_SET);
 351         else {
 352             ERR("BitmapBits == NULL??\n");
 353             ret = 0;
 354         }
 355
 356     } else {
 357
 358         if(!bmp->bitmap.bmBits) /* Alloc enough for entire bitmap */
 359             bmp->bitmap.bmBits = HeapAlloc( GetProcessHeap(), 0, count );
 360         if(!bmp->bitmap.bmBits) {
 361             WARN("Unable to allocate bit buffer\n");
 362             ret = 0;
 363         } else {
 364             memcpy(bmp->bitmap.bmBits, bits, count);
 365             ret = count;
 366         }
 367     }
 368
 369     GDI_HEAP_UNLOCK( hbitmap );
 370     return ret;
 371 }
 372
 373 /**********************************************************************
 374  *              BITMAP_CopyBitmap
 375  *
 376  */
 377 HBITMAP BITMAP_CopyBitmap(HBITMAP hbitmap)
 378 {
 379     BITMAPOBJ *bmp = (BITMAPOBJ *) GDI_GetObjPtr( hbitmap, BITMAP_MAGIC );
 380     HBITMAP res = 0;
 381     BITMAP bm;
 382
 383     if(!bmp) return 0;
 384
 385     bm = bmp->bitmap;
 386     bm.bmBits = NULL;
 387     res = CreateBitmapIndirect(&bm);
 388
 389     if(res) {
 390         char *buf = HeapAlloc( GetProcessHeap(), 0, bm.bmWidthBytes *
 391                                bm.bmHeight );
 392         GetBitmapBits (hbitmap, bm.bmWidthBytes * bm.bmHeight, buf);
 393         SetBitmapBits (res, bm.bmWidthBytes * bm.bmHeight, buf);
 394         HeapFree( GetProcessHeap(), 0, buf );
 395     }
 396
 397     GDI_HEAP_UNLOCK( hbitmap );
 398     return res;
 399 }
 400
 401 /***********************************************************************
 402  *           BITMAP_DeleteObject
 403  */
 404 BOOL BITMAP_DeleteObject( HBITMAP16 hbitmap, BITMAPOBJ * bmp )
 405 {
 406     if (bmp->funcs && bmp->funcs->pDeleteObject)
 407         bmp->funcs->pDeleteObject( hbitmap );
 408
 409     if( bmp->bitmap.bmBits )
 410         HeapFree( GetProcessHeap(), 0, bmp->bitmap.bmBits );
 411
 412     DIB_DeleteDIBSection( bmp );
 413
 414     return GDI_FreeObject( hbitmap );
 415 }
 416
 417
 418 /***********************************************************************
 419  *           BITMAP_GetObject16
 420  */
 421 INT16 BITMAP_GetObject16( BITMAPOBJ * bmp, INT16 count, LPVOID buffer )
 422 {
 423     if (bmp->dib)
 424     {
 425         if ( count <= sizeof(BITMAP16) )
 426         {
 427             BITMAP *bmp32 = &bmp->dib->dsBm;
 428             BITMAP16 bmp16;
 429             bmp16.bmType       = bmp32->bmType;
 430             bmp16.bmWidth      = bmp32->bmWidth;
 431             bmp16.bmHeight     = bmp32->bmHeight;
 432             bmp16.bmWidthBytes = bmp32->bmWidthBytes;
 433             bmp16.bmPlanes     = bmp32->bmPlanes;
 434             bmp16.bmBitsPixel  = bmp32->bmBitsPixel;
 435             bmp16.bmBits       = (SEGPTR)0;
 436             memcpy( buffer, &bmp16, count );
 437             return count;
 438         }
 439         else
 440         {
 441             FIXME("not implemented for DIBs: count %d\n", count);
 442             return 0;
 443         }
 444     }
 445     else
 446     {
 447         BITMAP16 bmp16;
 448         bmp16.bmType       = bmp->bitmap.bmType;
 449         bmp16.bmWidth      = bmp->bitmap.bmWidth;
 450         bmp16.bmHeight     = bmp->bitmap.bmHeight;
 451         bmp16.bmWidthBytes = bmp->bitmap.bmWidthBytes;
 452         bmp16.bmPlanes     = bmp->bitmap.bmPlanes;
 453         bmp16.bmBitsPixel  = bmp->bitmap.bmBitsPixel;
 454         bmp16.bmBits       = (SEGPTR)0;
 455         if (count > sizeof(bmp16)) count = sizeof(bmp16);
 456         memcpy( buffer, &bmp16, count );
 457         return count;
 458     }
 459 }
 460
 461
 462 /***********************************************************************
 463  *           BITMAP_GetObject
 464  */
 465 INT BITMAP_GetObject( BITMAPOBJ * bmp, INT count, LPVOID buffer )
 466 {
 467     if (bmp->dib)
 468     {
 469         if (count < sizeof(DIBSECTION))
 470         {
 471             if (count > sizeof(BITMAP)) count = sizeof(BITMAP);
 472         }
 473         else
 474         {
 475             if (count > sizeof(DIBSECTION)) count = sizeof(DIBSECTION);
 476         }
 477
 478         memcpy( buffer, bmp->dib, count );
 479         return count;
 480     }
 481     else
 482     {
 483         if (count > sizeof(BITMAP)) count = sizeof(BITMAP);
 484         memcpy( buffer, &bmp->bitmap, count );
 485         return count;
 486     }
 487 }
 488
 489
 490 /***********************************************************************
 491  *           CreateDiscardableBitmap16    (GDI.156)
 492  */
 493 HBITMAP16 WINAPI CreateDiscardableBitmap16( HDC16 hdc, INT16 width,
 494                                             INT16 height )
 495 {
 496     return CreateCompatibleBitmap16( hdc, width, height );
 497 }
 498
 499
 500 /******************************************************************************
 501  * CreateDiscardableBitmap [GDI32.38]  Creates a discardable bitmap
 502  *
 503  * RETURNS
 504  *    Success: Handle to bitmap
 505  *    Failure: NULL
 506  */
 507 HBITMAP WINAPI CreateDiscardableBitmap(
 508     HDC hdc,    /* [in] Handle to device context */
 509     INT width,  /* [in] Bitmap width */
 510     INT height) /* [in] Bitmap height */
 511 {
 512     return CreateCompatibleBitmap( hdc, width, height );
 513 }
 514
 515
 516 /***********************************************************************
 517  *           GetBitmapDimensionEx16    (GDI.468)
 518  *
 519  * NOTES
 520  *    Can this call GetBitmapDimensionEx?
 521  */
 522 BOOL16 WINAPI GetBitmapDimensionEx16( HBITMAP16 hbitmap, LPSIZE16 size )
 523 {
 524     BITMAPOBJ * bmp = (BITMAPOBJ *) GDI_GetObjPtr( hbitmap, BITMAP_MAGIC );
 525     if (!bmp) return FALSE;
 526     CONV_SIZE32TO16( &bmp->size, size );
 527     GDI_HEAP_UNLOCK( hbitmap );
 528     return TRUE;
 529 }
 530
 531
 532 /******************************************************************************
 533  * GetBitmapDimensionEx [GDI32.144]  Retrieves dimensions of a bitmap
 534  *
 535  * RETURNS
 536  *    Success: TRUE
 537  *    Failure: FALSE
 538  */
 539 BOOL WINAPI GetBitmapDimensionEx(
 540     HBITMAP hbitmap, /* [in]  Handle to bitmap */
 541     LPSIZE size)     /* [out] Address of struct receiving dimensions */
 542 {
 543     BITMAPOBJ * bmp = (BITMAPOBJ *) GDI_GetObjPtr( hbitmap, BITMAP_MAGIC );
 544     if (!bmp) return FALSE;
 545     *size = bmp->size;
 546     GDI_HEAP_UNLOCK( hbitmap );
 547     return TRUE;
 548 }
 549
 550
 551 /***********************************************************************
 552  *           GetBitmapDimension    (GDI.162)
 553  */
 554 DWORD WINAPI GetBitmapDimension16( HBITMAP16 hbitmap )
 555 {
 556     SIZE16 size;
 557     if (!GetBitmapDimensionEx16( hbitmap, &size )) return 0;
 558     return MAKELONG( size.cx, size.cy );
 559 }
 560
 561
 562 /***********************************************************************
 563  *           SetBitmapDimensionEx16    (GDI.478)
 564  */
 565 BOOL16 WINAPI SetBitmapDimensionEx16( HBITMAP16 hbitmap, INT16 x, INT16 y,
 566                                       LPSIZE16 prevSize )
 567 {
 568     BITMAPOBJ * bmp = (BITMAPOBJ *) GDI_GetObjPtr( hbitmap, BITMAP_MAGIC );
 569     if (!bmp) return FALSE;
 570     if (prevSize) CONV_SIZE32TO16( &bmp->size, prevSize );
 571     bmp->size.cx = x;
 572     bmp->size.cy = y;
 573     GDI_HEAP_UNLOCK( hbitmap );
 574     return TRUE;
 575 }
 576
 577
 578 /******************************************************************************
 579  * SetBitmapDimensionEx [GDI32.304]  Assignes dimensions to a bitmap
 580  *
 581  * RETURNS
 582  *    Success: TRUE
 583  *    Failure: FALSE
 584  */
 585 BOOL WINAPI SetBitmapDimensionEx(
 586     HBITMAP hbitmap, /* [in]  Handle to bitmap */
 587     INT x,           /* [in]  Bitmap width */
 588     INT y,           /* [in]  Bitmap height */
 589     LPSIZE prevSize) /* [out] Address of structure for orig dims */
 590 {
 591     BITMAPOBJ * bmp = (BITMAPOBJ *) GDI_GetObjPtr( hbitmap, BITMAP_MAGIC );
 592     if (!bmp) return FALSE;
 593     if (prevSize) *prevSize = bmp->size;
 594     bmp->size.cx = x;
 595     bmp->size.cy = y;
 596     GDI_HEAP_UNLOCK( hbitmap );
 597     return TRUE;
 598 }
 599
 600
 601 /***********************************************************************
 602  *           SetBitmapDimension    (GDI.163)
 603  */
 604 DWORD WINAPI SetBitmapDimension16( HBITMAP16 hbitmap, INT16 x, INT16 y )
 605 {
 606     SIZE16 size;
 607     if (!SetBitmapDimensionEx16( hbitmap, x, y, &size )) return 0;
 608     return MAKELONG( size.cx, size.cy );
 609 }
 610