objects/palette.c

   1 /*
   2  * GDI palette objects
   3  *
   4  * Copyright 1993,1994 Alexandre Julliard
   5  * Copyright 1996 Alex Korobka
   6  *
   7  */
   8
   9 #include <stdlib.h>
  10 #include <string.h>
  11 #include <X11/Xlib.h>
  12
  13 #include "gdi.h"
  14 #include "color.h"
  15 #include "palette.h"
  16 #include "xmalloc.h"
  17 #include "stddebug.h"
  18 /* #define DEBUG_PALETTE */
  19 #include "debug.h"
  20
  21  /* lookup pixel among static entries of the system palette */
  22 extern int COLOR_LookupSystemPixel(COLORREF);
  23
  24 static UINT32 SystemPaletteUse = SYSPAL_STATIC;  /* currently not considered */
  25
  26 static HPALETTE16 hPrimaryPalette = 0; /* used for WM_PALETTECHANGED */
  27 static HPALETTE16 hLastRealizedPalette = 0; /* UnrealizeObject() needs it */
  28
  29
  30 /***********************************************************************
  31  *           PALETTE_ValidateFlags
  32  */
  33 void PALETTE_ValidateFlags(PALETTEENTRY* lpPalE, int size)
  34 {
  35     int i = 0;
  36     for( ; i<size ; i++ )
  37         lpPalE[i].peFlags = PC_SYS_USED | (lpPalE[i].peFlags & 0x07);
  38 }
  39
  40
  41 /***********************************************************************
  42  *           CreatePalette16    (GDI.360)
  43  */
  44 HPALETTE16 CreatePalette16( const LOGPALETTE* palette )
  45 {
  46     return CreatePalette32( palette );
  47 }
  48
  49
  50 /***********************************************************************
  51  *           CreatePalette32    (GDI32.53)
  52  */
  53 HPALETTE32 CreatePalette32( const LOGPALETTE* palette )
  54 {
  55     PALETTEOBJ * palettePtr;
  56     HPALETTE32 hpalette;
  57     int size = sizeof(LOGPALETTE) + (palette->palNumEntries - 1) * sizeof(PALETTEENTRY);
  58
  59     dprintf_palette(stddeb,"CreatePalette: %i entries, ",
  60                     palette->palNumEntries);
  61
  62     hpalette = GDI_AllocObject( size + sizeof(int*) +sizeof(GDIOBJHDR) , PALETTE_MAGIC );
  63     if (!hpalette) return 0;
  64
  65     palettePtr = (PALETTEOBJ *) GDI_HEAP_LIN_ADDR( hpalette );
  66     memcpy( &palettePtr->logpalette, palette, size );
  67     PALETTE_ValidateFlags(palettePtr->logpalette.palPalEntry,
  68                           palettePtr->logpalette.palNumEntries);
  69     palettePtr->mapping = NULL;
  70
  71     dprintf_palette(stddeb,"returning %04x\n", hpalette);
  72     return hpalette;
  73 }
  74
  75
  76 /***********************************************************************
  77  *           GetPaletteEntries16    (GDI.363)
  78  */
  79 UINT16 GetPaletteEntries16( HPALETTE16 hpalette, UINT16 start, UINT16 count,
  80                             LPPALETTEENTRY entries )
  81 {
  82     return GetPaletteEntries32( hpalette, start, count, entries );
  83 }
  84
  85
  86 /***********************************************************************
  87  *           GetPaletteEntries32    (GDI32.209)
  88  */
  89 UINT32 GetPaletteEntries32( HPALETTE32 hpalette, UINT32 start, UINT32 count,
  90                             LPPALETTEENTRY entries )
  91 {
  92     PALETTEOBJ * palPtr;
  93     INT32 numEntries;
  94
  95     dprintf_palette( stddeb,"GetPaletteEntries: hpal = %04x, %i entries\n",
  96                      hpalette, count );
  97
  98     palPtr = (PALETTEOBJ *) GDI_GetObjPtr( hpalette, PALETTE_MAGIC );
  99     if (!palPtr) return 0;
 100
 101     numEntries = palPtr->logpalette.palNumEntries;
 102     if (start >= numEntries) return 0;
 103     if (start+count > numEntries) count = numEntries - start;
 104     memcpy( entries, &palPtr->logpalette.palPalEntry[start],
 105             count * sizeof(PALETTEENTRY) );
 106     for( numEntries = 0; numEntries < count ; numEntries++ )
 107          if (entries[numEntries].peFlags & 0xF0)
 108              entries[numEntries].peFlags = 0;
 109     return count;
 110 }
 111
 112
 113 /***********************************************************************
 114  *           SetPaletteEntries16    (GDI.364)
 115  */
 116 UINT16 SetPaletteEntries16( HPALETTE16 hpalette, UINT16 start, UINT16 count,
 117                             LPPALETTEENTRY entries )
 118 {
 119     return SetPaletteEntries32( hpalette, start, count, entries );
 120 }
 121
 122
 123 /***********************************************************************
 124  *           SetPaletteEntries32    (GDI32.326)
 125  */
 126 UINT32 SetPaletteEntries32( HPALETTE32 hpalette, UINT32 start, UINT32 count,
 127                             LPPALETTEENTRY entries )
 128 {
 129     PALETTEOBJ * palPtr;
 130     INT32 numEntries;
 131
 132     dprintf_palette( stddeb,"SetPaletteEntries: hpal = %04x, %i entries\n",
 133                      hpalette, count );
 134
 135     palPtr = (PALETTEOBJ *) GDI_GetObjPtr( hpalette, PALETTE_MAGIC );
 136     if (!palPtr) return 0;
 137
 138     numEntries = palPtr->logpalette.palNumEntries;
 139     if (start >= numEntries) return 0;
 140     if (start+count > numEntries) count = numEntries - start;
 141     memcpy( &palPtr->logpalette.palPalEntry[start], entries,
 142             count * sizeof(PALETTEENTRY) );
 143     PALETTE_ValidateFlags(palPtr->logpalette.palPalEntry,
 144                           palPtr->logpalette.palNumEntries);
 145     free(palPtr->mapping);
 146     palPtr->mapping = NULL;
 147
 148     return count;
 149 }
 150
 151
 152 /***********************************************************************
 153  *           ResizePalette16   (GDI.368)
 154  */
 155 BOOL16 ResizePalette16( HPALETTE16 hPal, UINT16 cEntries )
 156 {
 157     return ResizePalette32( hPal, cEntries );
 158 }
 159
 160
 161 /***********************************************************************
 162  *           ResizePalette32   (GDI32.289)
 163  */
 164 BOOL32 ResizePalette32( HPALETTE32 hPal, UINT32 cEntries )
 165 {
 166     PALETTEOBJ * palPtr = (PALETTEOBJ *) GDI_GetObjPtr( hPal, PALETTE_MAGIC );
 167     UINT32       cPrevEnt, prevVer;
 168     int          prevsize, size = sizeof(LOGPALETTE) + (cEntries - 1) * sizeof(PALETTEENTRY);
 169     int*         mapping = NULL;
 170
 171     dprintf_palette(stddeb,"ResizePalette: hpal = %04x, prev = %i, new = %i\n",
 172                     hPal, (palPtr)? -1: palPtr->logpalette.palNumEntries, cEntries );
 173     if( !palPtr ) return FALSE;
 174     cPrevEnt = palPtr->logpalette.palNumEntries;
 175     prevVer = palPtr->logpalette.palVersion;
 176     prevsize = sizeof(LOGPALETTE) + (cPrevEnt - 1) * sizeof(PALETTEENTRY) +
 177                                         sizeof(int*) + sizeof(GDIOBJHDR);
 178     size += sizeof(int*) + sizeof(GDIOBJHDR);
 179     mapping = palPtr->mapping;
 180
 181     GDI_HEAP_REALLOC( hPal, size );
 182     palPtr = (PALETTEOBJ *) GDI_GetObjPtr( hPal, PALETTE_MAGIC );
 183     if( !palPtr ) return FALSE;
 184
 185     if( mapping )
 186         palPtr->mapping = (int*) xrealloc( mapping, cEntries * sizeof(int) );
 187     if( cEntries > cPrevEnt )
 188     {
 189         if( mapping )
 190             memset(palPtr->mapping + cPrevEnt, 0, (cEntries - cPrevEnt)*sizeof(int));
 191         memset( (BYTE*)palPtr + prevsize, 0, size - prevsize );
 192         PALETTE_ValidateFlags((PALETTEENTRY*)((BYTE*)palPtr + prevsize),
 193                                                      cEntries - cPrevEnt );
 194     }
 195     palPtr->logpalette.palNumEntries = cEntries;
 196     palPtr->logpalette.palVersion = prevVer;
 197     return TRUE;
 198 }
 199
 200
 201 /***********************************************************************
 202  *           AnimatePalette16   (GDI.367)
 203  */
 204 BOOL16 AnimatePalette16( HPALETTE16 hPal, UINT16 StartIndex, UINT16 NumEntries,
 205                          LPPALETTEENTRY PaletteColors )
 206 {
 207     return AnimatePalette32( hPal, StartIndex, NumEntries, PaletteColors );
 208 }
 209
 210
 211 /***********************************************************************
 212  *           AnimatePalette32   (GDI32.6)
 213  */
 214 BOOL32 AnimatePalette32( HPALETTE32 hPal, UINT32 StartIndex, UINT32 NumEntries,
 215                          LPPALETTEENTRY PaletteColors )
 216 {
 217     fprintf(stdnimp,"AnimatePalette: empty stub! \n");
 218     return TRUE;
 219 }
 220
 221
 222 /***********************************************************************
 223  *           SetSystemPaletteUse16   (GDI.373)
 224  */
 225 UINT16 SetSystemPaletteUse16( HDC16 hdc, UINT16 use )
 226 {
 227     return SetSystemPaletteUse32( hdc, use );
 228 }
 229
 230
 231 /***********************************************************************
 232  *           SetSystemPaletteUse32   (GDI32.335)
 233  */
 234 UINT32 SetSystemPaletteUse32( HDC32 hdc, UINT32 use )
 235 {
 236     UINT32 old = SystemPaletteUse;
 237     fprintf( stdnimp,"SetSystemPaletteUse(%04x,%04x) // empty stub !!!\n",
 238              hdc, use );
 239     SystemPaletteUse = use;
 240     return old;
 241 }
 242
 243
 244 /***********************************************************************
 245  *           GetSystemPaletteUse16   (GDI.374)
 246  */
 247 UINT16 GetSystemPaletteUse16( HDC16 hdc )
 248 {
 249     return SystemPaletteUse;
 250 }
 251
 252
 253 /***********************************************************************
 254  *           GetSystemPaletteUse32   (GDI32.223)
 255  */
 256 UINT32 GetSystemPaletteUse32( HDC32 hdc )
 257 {
 258     return SystemPaletteUse;
 259 }
 260
 261
 262 /***********************************************************************
 263  *           GetSystemPaletteEntries16   (GDI.375)
 264  */
 265 UINT16 GetSystemPaletteEntries16( HDC16 hdc, UINT16 start, UINT16 count,
 266                                   LPPALETTEENTRY entries )
 267 {
 268     return GetSystemPaletteEntries32( hdc, start, count, entries );
 269 }
 270
 271
 272 /***********************************************************************
 273  *           GetSystemPaletteEntries32   (GDI32.222)
 274  */
 275 UINT32 GetSystemPaletteEntries32( HDC32 hdc, UINT32 start, UINT32 count,
 276                                   LPPALETTEENTRY entries )
 277 {
 278     UINT32 i;
 279     DC *dc;
 280
 281     dprintf_palette(stddeb,"GetSystemPaletteEntries: hdc = %04x, cound = %i", hdc, count );
 282
 283     if (!(dc = (DC *) GDI_GetObjPtr( hdc, DC_MAGIC ))) return 0;
 284     if (start >= dc->w.devCaps->sizePalette) return 0;
 285     if (start+count >= dc->w.devCaps->sizePalette)
 286         count = dc->w.devCaps->sizePalette - start;
 287     for (i = 0; i < count; i++)
 288     {
 289         *(COLORREF*)(entries + i) = COLOR_GetSystemPaletteEntry( start + i );
 290
 291         dprintf_palette( stddeb,"\tidx(%02x) -> RGB(%08lx)\n",
 292                          start + i, *(COLORREF*)(entries + i) );
 293     }
 294     return count;
 295 }
 296
 297
 298 /***********************************************************************
 299  *           GetNearestPaletteIndex16   (GDI.370)
 300  */
 301 UINT16 GetNearestPaletteIndex16( HPALETTE16 hpalette, COLORREF color )
 302 {
 303     return GetNearestPaletteIndex32( hpalette, color );
 304 }
 305
 306
 307 /***********************************************************************
 308  *           GetNearestPaletteIndex32   (GDI32.203)
 309  */
 310 UINT32 GetNearestPaletteIndex32( HPALETTE32 hpalette, COLORREF color )
 311 {
 312     PALETTEOBJ* palObj = (PALETTEOBJ*)GDI_GetObjPtr( hpalette, PALETTE_MAGIC );
 313     UINT32 index  = 0;
 314
 315     if( palObj )
 316         index = COLOR_PaletteLookupPixel( palObj->logpalette.palPalEntry,
 317                                           palObj->logpalette.palNumEntries,
 318                                           NULL, color, FALSE );
 319
 320     dprintf_palette(stddeb,"GetNearestPaletteIndex(%04x,%06lx): returning %d\n",
 321                     hpalette, color, index );
 322     return index;
 323 }
 324
 325
 326 /***********************************************************************
 327  *           GetNearestColor16   (GDI.154)
 328  */
 329 COLORREF GetNearestColor16( HDC16 hdc, COLORREF color )
 330 {
 331     return GetNearestColor32( hdc, color );
 332 }
 333
 334
 335 /***********************************************************************
 336  *           GetNearestColor32   (GDI32.202)
 337  */
 338 COLORREF GetNearestColor32( HDC32 hdc, COLORREF color )
 339 {
 340     COLORREF     nearest = 0xFADECAFE;
 341     DC          *dc;
 342     PALETTEOBJ  *palObj;
 343
 344     if ( (dc = (DC *) GDI_GetObjPtr( hdc, DC_MAGIC )) )
 345     {
 346       palObj = (PALETTEOBJ*)
 347                 GDI_GetObjPtr( (dc->w.hPalette)? dc->w.hPalette
 348                                                : STOCK_DEFAULT_PALETTE, PALETTE_MAGIC );
 349
 350       nearest = COLOR_LookupNearestColor( palObj->logpalette.palPalEntry,
 351                                           palObj->logpalette.palNumEntries, color );
 352     }
 353
 354     dprintf_palette(stddeb,"GetNearestColor(%06lx): returning %06lx\n",
 355                     color, nearest );
 356     return nearest;
 357 }
 358
 359
 360 /***********************************************************************
 361  *           PALETTE_GetObject
 362  */
 363 int PALETTE_GetObject( PALETTEOBJ * palette, int count, LPSTR buffer )
 364 {
 365     if (count > sizeof(WORD)) count = sizeof(WORD);
 366     memcpy( buffer, &palette->logpalette.palNumEntries, count );
 367     return count;
 368 }
 369
 370
 371 /***********************************************************************
 372  *           PALETTE_UnrealizeObject
 373  */
 374 BOOL32 PALETTE_UnrealizeObject( HPALETTE16 hpalette, PALETTEOBJ *palette )
 375 {
 376     if (palette->mapping)
 377     {
 378         free( palette->mapping );
 379         palette->mapping = NULL;
 380     }
 381     if (hLastRealizedPalette == hpalette) hLastRealizedPalette = 0;
 382     return TRUE;
 383 }
 384
 385
 386 /***********************************************************************
 387  *           PALETTE_DeleteObject
 388  */
 389 BOOL32 PALETTE_DeleteObject( HPALETTE16 hpalette, PALETTEOBJ *palette )
 390 {
 391     free( palette->mapping );
 392     return GDI_FreeObject( hpalette );
 393 }
 394
 395
 396 /***********************************************************************
 397  *           GDISelectPalette    (GDI.361)
 398  */
 399 HPALETTE16 GDISelectPalette( HDC16 hdc, HPALETTE16 hpal, WORD wBkg)
 400 {
 401     HPALETTE16 prev;
 402     DC *dc;
 403
 404     dprintf_palette(stddeb, "GDISelectPalette: %04x %04x\n", hdc, hpal );
 405
 406     dc = (DC *) GDI_GetObjPtr( hdc, DC_MAGIC );
 407     if (!dc)
 408     {
 409         dc = (DC *)GDI_GetObjPtr(hdc, METAFILE_DC_MAGIC);
 410         if (!dc) return 0;
 411     }
 412     prev = dc->w.hPalette;
 413     dc->w.hPalette = hpal;
 414     if (!wBkg) hPrimaryPalette = hpal;
 415     return prev;
 416 }
 417
 418
 419 /***********************************************************************
 420  *           GDIRealizePalette    (GDI.362)
 421  */
 422 UINT16 GDIRealizePalette( HDC16 hdc )
 423 {
 424     PALETTEOBJ* palPtr;
 425     int realized = 0;
 426     DC*         dc = (DC *) GDI_GetObjPtr( hdc, DC_MAGIC );
 427     if (!dc)
 428     {
 429         dc = (DC *)GDI_GetObjPtr(hdc, METAFILE_DC_MAGIC);
 430         if (!dc) return 0;
 431     }
 432
 433     dprintf_palette(stddeb, "GDIRealizePalette: %04x...", hdc );
 434
 435     if( dc &&  dc->w.hPalette != hLastRealizedPalette )
 436     {
 437         if( dc->w.hPalette == STOCK_DEFAULT_PALETTE )
 438             return RealizeDefaultPalette( hdc );
 439
 440         palPtr = (PALETTEOBJ *) GDI_GetObjPtr( dc->w.hPalette, PALETTE_MAGIC );
 441
 442         realized = COLOR_SetMapping(palPtr, dc->w.hPalette != hPrimaryPalette
 443                                   || dc->w.hPalette == STOCK_DEFAULT_PALETTE );
 444         hLastRealizedPalette = dc->w.hPalette;
 445     }
 446     else dprintf_palette(stddeb, " skipping ");
 447
 448     dprintf_palette(stdnimp, " realized %i colors\n", realized );
 449     return (UINT16)realized;
 450 }
 451
 452
 453 /***********************************************************************
 454  *           RealizeDefaultPalette    (GDI.365)
 455  */
 456 UINT16 RealizeDefaultPalette( HDC16 hdc )
 457 {
 458     DC          *dc;
 459     PALETTEOBJ*  palPtr;
 460     int          i, index, realized = 0;
 461
 462     dprintf_palette(stddeb,"RealizeDefaultPalette: %04x\n", hdc );
 463
 464     dc = (DC *) GDI_GetObjPtr( hdc, DC_MAGIC );
 465     if (!dc)
 466     {
 467         dc = (DC *)GDI_GetObjPtr(hdc, METAFILE_DC_MAGIC);
 468         if (!dc) return 0;
 469     }
 470
 471     if ( dc->w.flags & DC_MEMORY ) return 0;
 472
 473     hPrimaryPalette = STOCK_DEFAULT_PALETTE;
 474     hLastRealizedPalette = STOCK_DEFAULT_PALETTE;
 475
 476     palPtr = (PALETTEOBJ*)GDI_GetObjPtr(STOCK_DEFAULT_PALETTE, PALETTE_MAGIC );
 477
 478     /* lookup is needed to account for SetSystemPaletteUse() stuff */
 479
 480     for( i = 0; i < 20; i++ )
 481        {
 482          index = COLOR_LookupSystemPixel(*(COLORREF*)(palPtr->logpalette.palPalEntry + i));
 483
 484          /* mapping is allocated in COLOR_InitPalette() */
 485
 486          if( index != palPtr->mapping[i] ) { palPtr->mapping[i]=index; realized++; }
 487        }
 488     return realized;
 489 }
 490
 491 /***********************************************************************
 492  *           IsDCCurrentPalette   (GDI.412)
 493  */
 494 BOOL16 IsDCCurrentPalette(HDC16 hDC)
 495 {
 496     DC* dc = (DC *)GDI_GetObjPtr( hDC, DC_MAGIC );
 497     return (dc)?(dc->w.hPalette == hPrimaryPalette):FALSE;
 498 }
 499
 500
 501 /***********************************************************************
 502  *           SelectPalette16    (USER.282)
 503  */
 504 HPALETTE16 SelectPalette16( HDC16 hDC, HPALETTE16 hPal,
 505                             BOOL16 bForceBackground )
 506 {
 507     return SelectPalette32( hDC, hPal, bForceBackground );
 508 }
 509
 510
 511 /***********************************************************************
 512  *           SelectPalette32    (GDI32.300)
 513  */
 514 HPALETTE32 SelectPalette32( HDC32 hDC, HPALETTE32 hPal,
 515                             BOOL32 bForceBackground )
 516 {
 517     WORD        wBkgPalette = 1;
 518     PALETTEOBJ* lpt = (PALETTEOBJ*) GDI_GetObjPtr( hPal, PALETTE_MAGIC );
 519
 520     dprintf_palette(stddeb,"SelectPalette: dc %04x pal %04x, force=%i ",
 521                             hDC, hPal, bForceBackground);
 522     if( !lpt ) return 0;
 523
 524     dprintf_palette(stddeb," entries = %d\n",
 525                             lpt->logpalette.palNumEntries);
 526
 527     if( hPal != STOCK_DEFAULT_PALETTE )
 528     {
 529         HWND32 hWnd = WindowFromDC32( hDC );
 530         HWND32 hActive = GetActiveWindow32();
 531
 532         /* set primary palette if it's related to current active */
 533
 534         if((!hWnd || (hActive == hWnd || IsChild16(hActive,hWnd))) &&
 535             !bForceBackground )
 536             wBkgPalette = 0;
 537     }
 538     return GDISelectPalette( hDC, hPal, wBkgPalette);
 539 }
 540
 541
 542 /***********************************************************************
 543  *           RealizePalette16    (USER.283)
 544  */
 545 UINT16 RealizePalette16( HDC16 hDC )
 546 {
 547     return RealizePalette32( hDC );
 548 }
 549
 550
 551 /***********************************************************************
 552  *           RealizePalette32    (GDI32.280)
 553  */
 554 UINT32 RealizePalette32( HDC32 hDC )
 555 {
 556     UINT32 realized = GDIRealizePalette( hDC );
 557
 558     /* do not send anything if no colors were changed */
 559
 560     if( IsDCCurrentPalette( hDC ) && realized &&
 561         !(COLOR_GetSystemPaletteFlags() & COLOR_VIRTUAL) )
 562     {
 563         /* Send palette change notification */
 564
 565         HWND32 hWnd;
 566         if( (hWnd = WindowFromDC32( hDC )) )
 567             SendMessage16( HWND_BROADCAST, WM_PALETTECHANGED, hWnd, 0L);
 568     }
 569     return realized;
 570 }
 571
 572
 573 /**********************************************************************
 574  *            UpdateColors16   (GDI.366)
 575  */
 576 INT16 UpdateColors16( HDC16 hDC )
 577 {
 578     HWND32 hWnd = WindowFromDC32( hDC );
 579
 580     /* Docs say that we have to remap current drawable pixel by pixel
 581      * but it would take forever given the speed of XGet/PutPixel.
 582      */
 583     if (hWnd && !(COLOR_GetSystemPaletteFlags() & COLOR_VIRTUAL) )
 584         InvalidateRect32( hWnd, NULL, FALSE );
 585     return 0x666;
 586 }
 587
 588
 589 /**********************************************************************
 590  *            UpdateColors32   (GDI32.359)
 591  */
 592 BOOL32 UpdateColors32( HDC32 hDC )
 593 {
 594     UpdateColors16( hDC );
 595     return TRUE;
 596 }