subsystems/win32/win32k/objects/palette.c

   1 /*
   2  * COPYRIGHT:         See COPYING in the top level directory
   3  * PROJECT:           ReactOS kernel
   4  * PURPOSE:           GDI Palette Functions
   5  * FILE:              subsys/win32k/eng/palette.c
   6  * PROGRAMERS:        Jason Filby
   7  *                    Timo Kreuzer
   8  */
   9
  10 #include <win32k.h>
  11
  12 #define NDEBUG
  13 #include <debug.h>
  14
  15 static UINT SystemPaletteUse = SYSPAL_NOSTATIC;  /* the program need save the pallete and restore it */
  16
  17 PALETTE gpalRGB, gpalBGR, gpalMono, gpalRGB555, gpalRGB565, *gppalDefault;
  18 PPALETTE appalSurfaceDefault[11];
  19
  20 const PALETTEENTRY g_sysPalTemplate[NB_RESERVED_COLORS] =
  21 {
  22   // first 10 entries in the system palette
  23   // red  green blue  flags
  24   { 0x00, 0x00, 0x00, PC_SYS_USED },
  25   { 0x80, 0x00, 0x00, PC_SYS_USED },
  26   { 0x00, 0x80, 0x00, PC_SYS_USED },
  27   { 0x80, 0x80, 0x00, PC_SYS_USED },
  28   { 0x00, 0x00, 0x80, PC_SYS_USED },
  29   { 0x80, 0x00, 0x80, PC_SYS_USED },
  30   { 0x00, 0x80, 0x80, PC_SYS_USED },
  31   { 0xc0, 0xc0, 0xc0, PC_SYS_USED },
  32   { 0xc0, 0xdc, 0xc0, PC_SYS_USED },
  33   { 0xa6, 0xca, 0xf0, PC_SYS_USED },
  34
  35   // ... c_min/2 dynamic colorcells
  36   // ... gap (for sparse palettes)
  37   // ... c_min/2 dynamic colorcells
  38
  39   { 0xff, 0xfb, 0xf0, PC_SYS_USED },
  40   { 0xa0, 0xa0, 0xa4, PC_SYS_USED },
  41   { 0x80, 0x80, 0x80, PC_SYS_USED },
  42   { 0xff, 0x00, 0x00, PC_SYS_USED },
  43   { 0x00, 0xff, 0x00, PC_SYS_USED },
  44   { 0xff, 0xff, 0x00, PC_SYS_USED },
  45   { 0x00, 0x00, 0xff, PC_SYS_USED },
  46   { 0xff, 0x00, 0xff, PC_SYS_USED },
  47   { 0x00, 0xff, 0xff, PC_SYS_USED },
  48   { 0xff, 0xff, 0xff, PC_SYS_USED }     // last 10
  49 };
  50
  51 unsigned short GetNumberOfBits(unsigned int dwMask)
  52 {
  53    unsigned short wBits;
  54    for (wBits = 0; dwMask; dwMask = dwMask & (dwMask - 1))
  55       wBits++;
  56    return wBits;
  57 }
  58
  59 // Create the system palette
  60 INIT_FUNCTION
  61 NTSTATUS
  62 NTAPI
  63 InitPaletteImpl()
  64 {
  65     int i;
  66     HPALETTE hpalette;
  67     PLOGPALETTE palPtr;
  68
  69     // create default palette (20 system colors)
  70     palPtr = ExAllocatePoolWithTag(PagedPool,
  71                                    sizeof(LOGPALETTE) +
  72                                        (NB_RESERVED_COLORS * sizeof(PALETTEENTRY)),
  73                                    TAG_PALETTE);
  74     if (!palPtr) return STATUS_NO_MEMORY;
  75
  76     palPtr->palVersion = 0x300;
  77     palPtr->palNumEntries = NB_RESERVED_COLORS;
  78     for (i=0; i<NB_RESERVED_COLORS; i++)
  79     {
  80         palPtr->palPalEntry[i].peRed = g_sysPalTemplate[i].peRed;
  81         palPtr->palPalEntry[i].peGreen = g_sysPalTemplate[i].peGreen;
  82         palPtr->palPalEntry[i].peBlue = g_sysPalTemplate[i].peBlue;
  83         palPtr->palPalEntry[i].peFlags = 0;
  84     }
  85
  86     hpalette = NtGdiCreatePaletteInternal(palPtr,NB_RESERVED_COLORS);
  87     ExFreePoolWithTag(palPtr, TAG_PALETTE);
  88
  89     /*  palette_size = visual->map_entries; */
  90
  91     gpalRGB.flFlags = PAL_RGB;
  92     gpalRGB.RedMask = RGB(0xFF, 0x00, 0x00);
  93     gpalRGB.GreenMask = RGB(0x00, 0xFF, 0x00);
  94     gpalRGB.BlueMask = RGB(0x00, 0x00, 0xFF);
  95     gpalRGB.BaseObject.ulShareCount = 1;
  96     gpalRGB.BaseObject.BaseFlags = 0 ;
  97
  98     gpalBGR.flFlags = PAL_BGR;
  99     gpalBGR.RedMask = RGB(0x00, 0x00, 0xFF);
 100     gpalBGR.GreenMask = RGB(0x00, 0xFF, 0x00);
 101     gpalBGR.BlueMask = RGB(0xFF, 0x00, 0x00);
 102     gpalBGR.BaseObject.ulShareCount = 1;
 103     gpalBGR.BaseObject.BaseFlags = 0 ;
 104
 105     gpalRGB555.flFlags = PAL_RGB16_555 | PAL_BITFIELDS;
 106     gpalRGB555.RedMask = 0x7C00;
 107     gpalRGB555.GreenMask = 0x3E0;
 108     gpalRGB555.BlueMask = 0x1F;
 109     gpalRGB555.BaseObject.ulShareCount = 1;
 110     gpalRGB555.BaseObject.BaseFlags = 0 ;
 111
 112     gpalRGB565.flFlags = PAL_RGB16_565 | PAL_BITFIELDS;
 113     gpalRGB565.RedMask = 0xF800;
 114     gpalRGB565.GreenMask = 0x7E0;
 115     gpalRGB565.BlueMask = 0x1F;
 116     gpalRGB565.BaseObject.ulShareCount = 1;
 117     gpalRGB565.BaseObject.BaseFlags = 0 ;
 118
 119     memset(&gpalMono, 0, sizeof(PALETTE));
 120     gpalMono.flFlags = PAL_MONOCHROME;
 121     gpalMono.BaseObject.ulShareCount = 1;
 122     gpalMono.BaseObject.BaseFlags = 0 ;
 123
 124     /* Initialize default surface palettes */
 125     gppalDefault = PALETTE_ShareLockPalette(hpalette);
 126     appalSurfaceDefault[BMF_1BPP] = &gpalMono;
 127     appalSurfaceDefault[BMF_4BPP] = gppalDefault;
 128     appalSurfaceDefault[BMF_8BPP] = gppalDefault;
 129     appalSurfaceDefault[BMF_16BPP] = &gpalRGB565;
 130     appalSurfaceDefault[BMF_24BPP] = &gpalBGR;
 131     appalSurfaceDefault[BMF_32BPP] = &gpalBGR;
 132     appalSurfaceDefault[BMF_4RLE] = gppalDefault;
 133     appalSurfaceDefault[BMF_8RLE] = gppalDefault;
 134     appalSurfaceDefault[BMF_JPEG] = &gpalRGB;
 135     appalSurfaceDefault[BMF_PNG] = &gpalRGB;
 136
 137     return STATUS_SUCCESS;
 138 }
 139
 140 VOID FASTCALL PALETTE_ValidateFlags(PALETTEENTRY* lpPalE, INT size)
 141 {
 142     int i = 0;
 143     for (; i<size ; i++)
 144         lpPalE[i].peFlags = PC_SYS_USED | (lpPalE[i].peFlags & 0x07);
 145 }
 146
 147 HPALETTE
 148 FASTCALL
 149 PALETTE_AllocPalette(ULONG Mode,
 150                      ULONG NumColors,
 151                      ULONG *Colors,
 152                      ULONG Red,
 153                      ULONG Green,
 154                      ULONG Blue)
 155 {
 156     HPALETTE NewPalette;
 157     PPALETTE PalGDI;
 158
 159     PalGDI = (PPALETTE)GDIOBJ_AllocObjWithHandle(GDI_OBJECT_TYPE_PALETTE);
 160     if (!PalGDI)
 161     {
 162         return NULL;
 163     }
 164
 165     NewPalette = PalGDI->BaseObject.hHmgr;
 166
 167     PalGDI->Self = NewPalette;
 168     PalGDI->flFlags = Mode;
 169
 170     if (NULL != Colors)
 171     {
 172         PalGDI->IndexedColors = ExAllocatePoolWithTag(PagedPool,
 173                                                       sizeof(PALETTEENTRY) * NumColors,
 174                                                       TAG_PALETTE);
 175         if (NULL == PalGDI->IndexedColors)
 176         {
 177             PALETTE_UnlockPalette(PalGDI);
 178             PALETTE_FreePaletteByHandle(NewPalette);
 179             return NULL;
 180         }
 181         RtlCopyMemory(PalGDI->IndexedColors, Colors, sizeof(PALETTEENTRY) * NumColors);
 182     }
 183
 184     if (Mode & PAL_INDEXED)
 185     {
 186         PalGDI->NumColors = NumColors;
 187     }
 188     else if (Mode & PAL_BITFIELDS)
 189     {
 190         PalGDI->RedMask = Red;
 191         PalGDI->GreenMask = Green;
 192         PalGDI->BlueMask = Blue;
 193
 194         if (Red == 0x7c00 && Green == 0x3E0 && Blue == 0x1F)
 195             PalGDI->flFlags |= PAL_RGB16_555;
 196         else if (Red == 0xF800 && Green == 0x7E0 && Blue == 0x1F)
 197             PalGDI->flFlags |= PAL_RGB16_565;
 198         else if (Red == 0xFF0000 && Green == 0xFF00 && Blue == 0xFF)
 199             PalGDI->flFlags |= PAL_BGR;
 200         else if (Red == 0xFF && Green == 0xFF00 && Blue == 0xFF0000)
 201             PalGDI->flFlags |= PAL_RGB;
 202     }
 203
 204     PALETTE_UnlockPalette(PalGDI);
 205
 206     return NewPalette;
 207 }
 208
 209 HPALETTE
 210 FASTCALL
 211 PALETTE_AllocPaletteIndexedRGB(ULONG NumColors,
 212                                CONST RGBQUAD *Colors)
 213 {
 214     HPALETTE NewPalette;
 215     PPALETTE PalGDI;
 216     UINT i;
 217
 218     PalGDI = (PPALETTE)GDIOBJ_AllocObjWithHandle(GDI_OBJECT_TYPE_PALETTE);
 219     if (!PalGDI)
 220     {
 221         return NULL;
 222     }
 223
 224     NewPalette = PalGDI->BaseObject.hHmgr;
 225
 226     PalGDI->Self = NewPalette;
 227     PalGDI->flFlags = PAL_INDEXED;
 228
 229     PalGDI->IndexedColors = ExAllocatePoolWithTag(PagedPool,
 230                                                   sizeof(PALETTEENTRY) * NumColors,
 231                                                   TAG_PALETTE);
 232     if (NULL == PalGDI->IndexedColors)
 233     {
 234         PALETTE_UnlockPalette(PalGDI);
 235         PALETTE_FreePaletteByHandle(NewPalette);
 236         return NULL;
 237     }
 238
 239     for (i = 0; i < NumColors; i++)
 240     {
 241         PalGDI->IndexedColors[i].peRed = Colors[i].rgbRed;
 242         PalGDI->IndexedColors[i].peGreen = Colors[i].rgbGreen;
 243         PalGDI->IndexedColors[i].peBlue = Colors[i].rgbBlue;
 244         PalGDI->IndexedColors[i].peFlags = 0;
 245     }
 246
 247     PalGDI->NumColors = NumColors;
 248
 249     PALETTE_UnlockPalette(PalGDI);
 250
 251     return NewPalette;
 252 }
 253
 254 BOOL INTERNAL_CALL
 255 PALETTE_Cleanup(PVOID ObjectBody)
 256 {
 257     PPALETTE pPal = (PPALETTE)ObjectBody;
 258     if (NULL != pPal->IndexedColors)
 259     {
 260         ExFreePoolWithTag(pPal->IndexedColors, TAG_PALETTE);
 261     }
 262
 263     return TRUE;
 264 }
 265
 266 INT FASTCALL
 267 PALETTE_GetObject(PPALETTE ppal, INT cbCount, LPLOGBRUSH lpBuffer)
 268 {
 269     if (!lpBuffer)
 270     {
 271         return sizeof(WORD);
 272     }
 273
 274     if ((UINT)cbCount < sizeof(WORD)) return 0;
 275     *((WORD*)lpBuffer) = (WORD)ppal->NumColors;
 276     return sizeof(WORD);
 277 }
 278
 279 ULONG
 280 NTAPI
 281 PALETTE_ulGetNearestPaletteIndex(PALETTE* ppal, ULONG iColor)
 282 {
 283     ULONG ulDiff, ulColorDiff, ulMinimalDiff = 0xFFFFFF;
 284     ULONG i, ulBestIndex = 0;
 285     PALETTEENTRY peColor = *(PPALETTEENTRY)&iColor;
 286
 287     /* Loop all palette entries, break on exact match */
 288     for (i = 0; i < ppal->NumColors && ulMinimalDiff != 0; i++)
 289     {
 290         /* Calculate distance in the color cube */
 291         ulDiff = peColor.peRed - ppal->IndexedColors[i].peRed;
 292         ulColorDiff = ulDiff * ulDiff;
 293         ulDiff = peColor.peGreen - ppal->IndexedColors[i].peGreen;
 294         ulColorDiff += ulDiff * ulDiff;
 295         ulDiff = peColor.peBlue - ppal->IndexedColors[i].peBlue;
 296         ulColorDiff += ulDiff * ulDiff;
 297
 298         /* Check for a better match */
 299         if (ulColorDiff < ulMinimalDiff)
 300         {
 301             ulBestIndex = i;
 302             ulMinimalDiff = ulColorDiff;
 303         }
 304     }
 305
 306     return ulBestIndex;
 307 }
 308
 309 ULONG
 310 NTAPI
 311 PALETTE_ulGetNearestBitFieldsIndex(PALETTE* ppal, ULONG ulColor)
 312 {
 313     ULONG ulNewColor;
 314
 315     // FIXME: HACK, should be stored already
 316     ppal->ulRedShift = CalculateShift(RGB(0xff,0,0), ppal->RedMask);
 317     ppal->ulGreenShift = CalculateShift(RGB(0,0xff,0), ppal->GreenMask);
 318     ppal->ulBlueShift = CalculateShift(RGB(0,0,0xff), ppal->BlueMask);
 319
 320     ulNewColor = _rotl(ulColor, ppal->ulRedShift) & ppal->RedMask;
 321     ulNewColor |= _rotl(ulColor, ppal->ulGreenShift) & ppal->GreenMask;
 322     ulNewColor |= _rotl(ulColor, ppal->ulBlueShift) & ppal->BlueMask;
 323
 324    return ulNewColor;
 325 }
 326
 327 ULONG
 328 NTAPI
 329 PALETTE_ulGetNearestIndex(PALETTE* ppal, ULONG ulColor)
 330 {
 331     if (ppal->flFlags & PAL_INDEXED) // use fl & PALINDEXED
 332         return PALETTE_ulGetNearestPaletteIndex(ppal, ulColor);
 333     else
 334         return PALETTE_ulGetNearestBitFieldsIndex(ppal, ulColor);
 335 }
 336
 337 VOID
 338 NTAPI
 339 PALETTE_vGetBitMasks(PPALETTE ppal, PULONG pulColors)
 340 {
 341     ASSERT(pulColors);
 342
 343     if (ppal->flFlags & PAL_INDEXED || ppal->flFlags & PAL_RGB)
 344     {
 345         pulColors[0] = RGB(0xFF, 0x00, 0x00);
 346         pulColors[1] = RGB(0x00, 0xFF, 0x00);
 347         pulColors[2] = RGB(0x00, 0x00, 0xFF);
 348     }
 349     else if (ppal->flFlags & PAL_BGR)
 350     {
 351         pulColors[0] = RGB(0x00, 0x00, 0xFF);
 352         pulColors[1] = RGB(0x00, 0xFF, 0x00);
 353         pulColors[2] = RGB(0xFF, 0x00, 0x00);
 354     }
 355     else if (ppal->flFlags & PAL_BITFIELDS)
 356     {
 357         pulColors[0] = ppal->RedMask;
 358         pulColors[1] = ppal->GreenMask;
 359         pulColors[2] = ppal->BlueMask;
 360     }
 361 }
 362
 363 VOID
 364 FASTCALL
 365 ColorCorrection(PPALETTE PalGDI, PPALETTEENTRY PaletteEntry, ULONG Colors)
 366 {
 367     PPDEVOBJ ppdev = (PPDEVOBJ)PalGDI->hPDev;
 368
 369     if (!ppdev) return;
 370
 371     if (ppdev->flFlags & PDEV_GAMMARAMP_TABLE)
 372     {
 373         INT i;
 374         PGAMMARAMP GammaRamp = (PGAMMARAMP)ppdev->pvGammaRamp;
 375         for ( i = 0; i < Colors; i++)
 376         {
 377             PaletteEntry[i].peRed   += GammaRamp->Red[i];
 378             PaletteEntry[i].peGreen += GammaRamp->Green[i];
 379             PaletteEntry[i].peBlue  += GammaRamp->Blue[i];
 380         }
 381     }
 382     return;
 383 }
 384
 385 /** Display Driver Interface **************************************************/
 386
 387 /*
 388  * @implemented
 389  */
 390 HPALETTE
 391 APIENTRY
 392 EngCreatePalette(
 393     ULONG Mode,
 394     ULONG NumColors,
 395     ULONG *Colors,
 396     ULONG Red,
 397     ULONG Green,
 398     ULONG Blue)
 399 {
 400     HPALETTE Palette;
 401
 402         Palette = PALETTE_AllocPalette(Mode, NumColors, Colors, Red, Green, Blue);
 403     if (Palette != NULL)
 404     {
 405         GDIOBJ_SetOwnership(Palette, NULL);
 406     }
 407
 408     return Palette;
 409 }
 410
 411 /*
 412  * @implemented
 413  */
 414 BOOL
 415 APIENTRY
 416 EngDeletePalette(IN HPALETTE Palette)
 417 {
 418     GDIOBJ_SetOwnership(Palette, PsGetCurrentProcess());
 419
 420     return PALETTE_FreePaletteByHandle(Palette);
 421 }
 422
 423 /*
 424  * @implemented
 425  */
 426 ULONG
 427 APIENTRY
 428 PALOBJ_cGetColors(PALOBJ *PalObj, ULONG Start, ULONG Colors, ULONG *PaletteEntry)
 429 {
 430     PALETTE *PalGDI;
 431
 432     PalGDI = (PALETTE*)PalObj;
 433    /* PalGDI = (PALETTE*)AccessInternalObjectFromUserObject(PalObj); */
 434
 435     if (Start >= PalGDI->NumColors)
 436         return 0;
 437
 438     Colors = min(Colors, PalGDI->NumColors - Start);
 439
 440     /* NOTE: PaletteEntry ULONGs are in the same order as PALETTEENTRY. */
 441     RtlCopyMemory(PaletteEntry, PalGDI->IndexedColors + Start, sizeof(ULONG) * Colors);
 442
 443     if (PalGDI->flFlags & PAL_GAMMACORRECTION)
 444         ColorCorrection(PalGDI, (PPALETTEENTRY)PaletteEntry, Colors);
 445
 446     return Colors;
 447 }
 448
 449
 450 /** Systemcall Interface ******************************************************/
 451
 452 /*
 453  * @implemented
 454  */
 455 HPALETTE APIENTRY
 456 NtGdiCreatePaletteInternal ( IN LPLOGPALETTE pLogPal, IN UINT cEntries )
 457 {
 458     PPALETTE PalGDI;
 459     HPALETTE NewPalette;
 460
 461     pLogPal->palNumEntries = cEntries;
 462     NewPalette = PALETTE_AllocPalette( PAL_INDEXED,
 463                                        cEntries,
 464                                        (PULONG)pLogPal->palPalEntry,
 465                                        0, 0, 0);
 466
 467     if (NewPalette == NULL)
 468     {
 469         return NULL;
 470     }
 471
 472     PalGDI = (PPALETTE) PALETTE_ShareLockPalette(NewPalette);
 473     if (PalGDI != NULL)
 474     {
 475         PALETTE_ValidateFlags(PalGDI->IndexedColors, PalGDI->NumColors);
 476         PALETTE_ShareUnlockPalette(PalGDI);
 477     }
 478     else
 479     {
 480         /* FIXME - Handle PalGDI == NULL!!!! */
 481         DPRINT1("PalGDI is NULL\n");
 482     }
 483   return NewPalette;
 484 }
 485
 486 HPALETTE APIENTRY NtGdiCreateHalftonePalette(HDC  hDC)
 487 {
 488     int i, r, g, b;
 489     struct {
 490         WORD Version;
 491         WORD NumberOfEntries;
 492         PALETTEENTRY aEntries[256];
 493         } Palette;
 494
 495     Palette.Version = 0x300;
 496     Palette.NumberOfEntries = 256;
 497     if (IntGetSystemPaletteEntries(hDC, 0, 256, Palette.aEntries) == 0)
 498     {
 499         /* from wine, more that 256 color math */
 500         Palette.NumberOfEntries = 20;
 501         for (i = 0; i < Palette.NumberOfEntries; i++)
 502         {
 503             Palette.aEntries[i].peRed=0xff;
 504             Palette.aEntries[i].peGreen=0xff;
 505             Palette.aEntries[i].peBlue=0xff;
 506             Palette.aEntries[i].peFlags=0x00;
 507         }
 508
 509         Palette.aEntries[0].peRed=0x00;
 510         Palette.aEntries[0].peBlue=0x00;
 511         Palette.aEntries[0].peGreen=0x00;
 512
 513         /* the first 6 */
 514         for (i=1; i <= 6; i++)
 515         {
 516             Palette.aEntries[i].peRed=(i%2)?0x80:0;
 517             Palette.aEntries[i].peGreen=(i==2)?0x80:(i==3)?0x80:(i==6)?0x80:0;
 518             Palette.aEntries[i].peBlue=(i>3)?0x80:0;
 519         }
 520
 521         for (i=7;  i <= 12; i++)
 522         {
 523             switch(i)
 524             {
 525                 case 7:
 526                     Palette.aEntries[i].peRed=0xc0;
 527                     Palette.aEntries[i].peBlue=0xc0;
 528                     Palette.aEntries[i].peGreen=0xc0;
 529                     break;
 530                 case 8:
 531                     Palette.aEntries[i].peRed=0xc0;
 532                     Palette.aEntries[i].peGreen=0xdc;
 533                     Palette.aEntries[i].peBlue=0xc0;
 534                     break;
 535                 case 9:
 536                     Palette.aEntries[i].peRed=0xa6;
 537                     Palette.aEntries[i].peGreen=0xca;
 538                     Palette.aEntries[i].peBlue=0xf0;
 539                     break;
 540                 case 10:
 541                     Palette.aEntries[i].peRed=0xff;
 542                     Palette.aEntries[i].peGreen=0xfb;
 543                     Palette.aEntries[i].peBlue=0xf0;
 544                     break;
 545                 case 11:
 546                     Palette.aEntries[i].peRed=0xa0;
 547                     Palette.aEntries[i].peGreen=0xa0;
 548                     Palette.aEntries[i].peBlue=0xa4;
 549                     break;
 550             case 12:
 551                 Palette.aEntries[i].peRed=0x80;
 552                 Palette.aEntries[i].peGreen=0x80;
 553                 Palette.aEntries[i].peBlue=0x80;
 554             }
 555         }
 556
 557         for (i=13; i <= 18; i++)
 558         {
 559             Palette.aEntries[i].peRed=(i%2)?0xff:0;
 560             Palette.aEntries[i].peGreen=(i==14)?0xff:(i==15)?0xff:(i==18)?0xff:0;
 561             Palette.aEntries[i].peBlue=(i>15)?0xff:0x00;
 562         }
 563     }
 564     else
 565     {
 566         /* 256 color table */
 567         for (r = 0; r < 6; r++)
 568             for (g = 0; g < 6; g++)
 569                 for (b = 0; b < 6; b++)
 570                 {
 571                     i = r + g*6 + b*36 + 10;
 572                     Palette.aEntries[i].peRed = r * 51;
 573                     Palette.aEntries[i].peGreen = g * 51;
 574                     Palette.aEntries[i].peBlue = b * 51;
 575                 }
 576
 577         for (i = 216; i < 246; i++)
 578         {
 579             int v = (i - 216) << 3;
 580             Palette.aEntries[i].peRed = v;
 581             Palette.aEntries[i].peGreen = v;
 582             Palette.aEntries[i].peBlue = v;
 583         }
 584     }
 585
 586    return NtGdiCreatePaletteInternal((LOGPALETTE *)&Palette, Palette.NumberOfEntries);
 587 }
 588
 589 BOOL
 590 APIENTRY
 591 NtGdiResizePalette(
 592     HPALETTE hpal,
 593     UINT Entries)
 594 {
 595 /*  PALOBJ *palPtr = (PALOBJ*)AccessUserObject(hPal);
 596   UINT cPrevEnt, prevVer;
 597   INT prevsize, size = sizeof(LOGPALETTE) + (cEntries - 1) * sizeof(PALETTEENTRY);
 598   XLATEOBJ *XlateObj = NULL;
 599
 600   if(!palPtr) return FALSE;
 601   cPrevEnt = palPtr->logpalette->palNumEntries;
 602   prevVer = palPtr->logpalette->palVersion;
 603   prevsize = sizeof(LOGPALETTE) + (cPrevEnt - 1) * sizeof(PALETTEENTRY) + sizeof(int*) + sizeof(GDIOBJHDR);
 604   size += sizeof(int*) + sizeof(GDIOBJHDR);
 605   XlateObj = palPtr->logicalToSystem;
 606
 607   if (!(palPtr = GDI_ReallocObject(size, hPal, palPtr))) return FALSE;
 608
 609   if(XlateObj)
 610   {
 611     XLATEOBJ *NewXlateObj = (int*) HeapReAlloc(GetProcessHeap(), 0, XlateObj, cEntries * sizeof(int));
 612     if(NewXlateObj == NULL)
 613     {
 614       ERR("Can not resize logicalToSystem -- out of memory!");
 615       GDI_ReleaseObj( hPal );
 616       return FALSE;
 617     }
 618     palPtr->logicalToSystem = NewXlateObj;
 619   }
 620
 621   if(cEntries > cPrevEnt)
 622   {
 623     if(XlateObj) memset(palPtr->logicalToSystem + cPrevEnt, 0, (cEntries - cPrevEnt)*sizeof(int));
 624     memset( (BYTE*)palPtr + prevsize, 0, size - prevsize );
 625     PALETTE_ValidateFlags((PALETTEENTRY*)((BYTE*)palPtr + prevsize), cEntries - cPrevEnt );
 626   }
 627   palPtr->logpalette->palNumEntries = cEntries;
 628   palPtr->logpalette->palVersion = prevVer;
 629 //    GDI_ReleaseObj( hPal );
 630   return TRUE; */
 631
 632   UNIMPLEMENTED;
 633   return FALSE;
 634 }
 635
 636 BOOL
 637 APIENTRY
 638 NtGdiGetColorAdjustment(
 639     HDC hdc,
 640     LPCOLORADJUSTMENT pca)
 641 {
 642     UNIMPLEMENTED;
 643     return FALSE;
 644 }
 645
 646 BOOL
 647 APIENTRY
 648 NtGdiSetColorAdjustment(
 649     HDC hdc,
 650     LPCOLORADJUSTMENT pca)
 651 {
 652     UNIMPLEMENTED;
 653     return FALSE;
 654 }
 655
 656 COLORREF APIENTRY NtGdiGetNearestColor(HDC hDC, COLORREF Color)
 657 {
 658    COLORREF nearest = CLR_INVALID;
 659    PDC dc;
 660    PPALETTE palGDI;
 661    LONG RBits, GBits, BBits;
 662
 663    dc = DC_LockDc(hDC);
 664    if (NULL != dc)
 665    {
 666       HPALETTE hpal = dc->dclevel.hpal;
 667       palGDI = PALETTE_ShareLockPalette(hpal);
 668       if (!palGDI)
 669       {
 670          DC_UnlockDc(dc);
 671          return nearest;
 672       }
 673
 674       if (palGDI->flFlags & PAL_INDEXED)
 675       {
 676          ULONG index;
 677          index = PALETTE_ulGetNearestPaletteIndex(palGDI, Color);
 678          nearest = PALETTE_ulGetRGBColorFromIndex(palGDI, index);
 679       }
 680       else if (palGDI->flFlags & PAL_RGB || palGDI->flFlags & PAL_BGR)
 681       {
 682          nearest = Color;
 683       }
 684       else if (palGDI->flFlags & PAL_BITFIELDS)
 685       {
 686          RBits = 8 - GetNumberOfBits(palGDI->RedMask);
 687          GBits = 8 - GetNumberOfBits(palGDI->GreenMask);
 688          BBits = 8 - GetNumberOfBits(palGDI->BlueMask);
 689          nearest = RGB(
 690             (GetRValue(Color) >> RBits) << RBits,
 691             (GetGValue(Color) >> GBits) << GBits,
 692             (GetBValue(Color) >> BBits) << BBits);
 693       }
 694       PALETTE_ShareUnlockPalette(palGDI);
 695       DC_UnlockDc(dc);
 696    }
 697
 698    return nearest;
 699 }
 700
 701 UINT
 702 APIENTRY
 703 NtGdiGetNearestPaletteIndex(
 704     HPALETTE hpal,
 705     COLORREF crColor)
 706 {
 707     PPALETTE ppal = PALETTE_ShareLockPalette(hpal);
 708     UINT index  = 0;
 709
 710     if (ppal)
 711     {
 712         if (ppal->flFlags & PAL_INDEXED)
 713         {
 714             /* Return closest match for the given RGB color */
 715             index = PALETTE_ulGetNearestPaletteIndex(ppal, crColor);
 716         }
 717         // else SetLastError ?
 718         PALETTE_ShareUnlockPalette(ppal);
 719     }
 720
 721     return index;
 722 }
 723
 724 UINT
 725 FASTCALL
 726 IntGdiRealizePalette(HDC hDC)
 727 {
 728     UINT i, realize = 0;
 729     PDC pdc;
 730     PALETTE *ppalSurf, *ppalDC;
 731
 732     pdc = DC_LockDc(hDC);
 733     if(!pdc)
 734     {
 735         EngSetLastError(ERROR_INVALID_HANDLE);
 736         return 0;
 737     }
 738
 739     ppalSurf = pdc->dclevel.pSurface->ppal;
 740     ppalDC = pdc->dclevel.ppal;
 741
 742     if(!(ppalSurf->flFlags & PAL_INDEXED))
 743     {
 744         // FIXME : set error?
 745         goto cleanup;
 746     }
 747
 748     ASSERT(ppalDC->flFlags & PAL_INDEXED);
 749
 750     // FIXME : should we resize ppalSurf if it's too small?
 751     realize = (ppalDC->NumColors < ppalSurf->NumColors) ? ppalDC->NumColors : ppalSurf->NumColors;
 752
 753     for(i=0; i<realize; i++)
 754     {
 755         InterlockedExchange((LONG*)&ppalSurf->IndexedColors[i], *(LONG*)&ppalDC->IndexedColors[i]);
 756     }
 757
 758 cleanup:
 759     DC_UnlockDc(pdc);
 760     return realize;
 761 }
 762
 763 UINT APIENTRY
 764 IntAnimatePalette(HPALETTE hPal,
 765                   UINT StartIndex,
 766                   UINT NumEntries,
 767                   CONST PPALETTEENTRY PaletteColors)
 768 {
 769     UINT ret = 0;
 770
 771     if( hPal != NtGdiGetStockObject(DEFAULT_PALETTE) )
 772     {
 773         PPALETTE palPtr;
 774         UINT pal_entries;
 775         HDC hDC;
 776         PDC dc;
 777         PWND Wnd;
 778         const PALETTEENTRY *pptr = PaletteColors;
 779
 780         palPtr = PALETTE_ShareLockPalette(hPal);
 781         if (!palPtr) return FALSE;
 782
 783         pal_entries = palPtr->NumColors;
 784         if (StartIndex >= pal_entries)
 785         {
 786             PALETTE_ShareUnlockPalette(palPtr);
 787             return FALSE;
 788         }
 789         if (StartIndex+NumEntries > pal_entries) NumEntries = pal_entries - StartIndex;
 790
 791         for (NumEntries += StartIndex; StartIndex < NumEntries; StartIndex++, pptr++)
 792         {
 793             /* According to MSDN, only animate PC_RESERVED colours */
 794             if (palPtr->IndexedColors[StartIndex].peFlags & PC_RESERVED)
 795             {
 796                 memcpy( &palPtr->IndexedColors[StartIndex], pptr,
 797                         sizeof(PALETTEENTRY) );
 798                 ret++;
 799                 PALETTE_ValidateFlags(&palPtr->IndexedColors[StartIndex], 1);
 800             }
 801         }
 802
 803         PALETTE_ShareUnlockPalette(palPtr);
 804
 805         /* Immediately apply the new palette if current window uses it */
 806         Wnd = UserGetDesktopWindow();
 807         hDC =  UserGetWindowDC(Wnd);
 808         dc = DC_LockDc(hDC);
 809         if (NULL != dc)
 810         {
 811             if (dc->dclevel.hpal == hPal)
 812             {
 813                 DC_UnlockDc(dc);
 814                 IntGdiRealizePalette(hDC);
 815             }
 816             else
 817                 DC_UnlockDc(dc);
 818         }
 819         UserReleaseDC(Wnd,hDC, FALSE);
 820     }
 821     return ret;
 822 }
 823
 824 UINT APIENTRY
 825 IntGetPaletteEntries(
 826     HPALETTE hpal,
 827     UINT StartIndex,
 828     UINT  Entries,
 829     LPPALETTEENTRY  pe)
 830 {
 831     PPALETTE palGDI;
 832     UINT numEntries;
 833
 834     palGDI = (PPALETTE) PALETTE_ShareLockPalette(hpal);
 835     if (NULL == palGDI)
 836     {
 837         return 0;
 838     }
 839
 840     numEntries = palGDI->NumColors;
 841     if (NULL != pe)
 842     {
 843         if (numEntries < StartIndex + Entries)
 844         {
 845             Entries = numEntries - StartIndex;
 846         }
 847         if (numEntries <= StartIndex)
 848         {
 849             PALETTE_ShareUnlockPalette(palGDI);
 850             return 0;
 851         }
 852         memcpy(pe, palGDI->IndexedColors + StartIndex, Entries * sizeof(PALETTEENTRY));
 853     }
 854     else
 855     {
 856         Entries = numEntries;
 857     }
 858
 859     PALETTE_ShareUnlockPalette(palGDI);
 860     return Entries;
 861 }
 862
 863 UINT APIENTRY
 864 IntGetSystemPaletteEntries(HDC  hDC,
 865                            UINT  StartIndex,
 866                            UINT  Entries,
 867                            LPPALETTEENTRY  pe)
 868 {
 869     PPALETTE palGDI = NULL;
 870     PDC dc = NULL;
 871     UINT EntriesSize = 0;
 872     UINT Ret = 0;
 873
 874     if (Entries == 0)
 875     {
 876         EngSetLastError(ERROR_INVALID_PARAMETER);
 877         return 0;
 878     }
 879
 880     if (pe != NULL)
 881     {
 882         EntriesSize = Entries * sizeof(pe[0]);
 883         if (Entries != EntriesSize / sizeof(pe[0]))
 884         {
 885             /* Integer overflow! */
 886             EngSetLastError(ERROR_INVALID_PARAMETER);
 887             return 0;
 888         }
 889     }
 890
 891     if (!(dc = DC_LockDc(hDC)))
 892     {
 893         EngSetLastError(ERROR_INVALID_HANDLE);
 894         return 0;
 895     }
 896
 897     palGDI = PALETTE_ShareLockPalette(dc->dclevel.hpal);
 898     if (palGDI != NULL)
 899     {
 900         if (pe != NULL)
 901         {
 902             if (StartIndex >= palGDI->NumColors)
 903                 Entries = 0;
 904             else if (Entries > palGDI->NumColors - StartIndex)
 905                 Entries = palGDI->NumColors - StartIndex;
 906
 907             memcpy(pe,
 908                    palGDI->IndexedColors + StartIndex,
 909                    Entries * sizeof(pe[0]));
 910
 911             Ret = Entries;
 912         }
 913         else
 914         {
 915             Ret = dc->ppdev->gdiinfo.ulNumPalReg;
 916         }
 917     }
 918
 919     if (palGDI != NULL)
 920         PALETTE_ShareUnlockPalette(palGDI);
 921
 922     if (dc != NULL)
 923         DC_UnlockDc(dc);
 924
 925     return Ret;
 926 }
 927
 928 UINT
 929 APIENTRY
 930 IntSetPaletteEntries(
 931     HPALETTE  hpal,
 932     UINT  Start,
 933     UINT  Entries,
 934     CONST LPPALETTEENTRY pe)
 935 {
 936     PPALETTE palGDI;
 937     WORD numEntries;
 938
 939     if ((UINT)hpal & GDI_HANDLE_STOCK_MASK)
 940     {
 941         return 0;
 942     }
 943
 944     palGDI = PALETTE_ShareLockPalette(hpal);
 945     if (!palGDI) return 0;
 946
 947     numEntries = palGDI->NumColors;
 948     if (Start >= numEntries)
 949     {
 950         PALETTE_ShareUnlockPalette(palGDI);
 951         return 0;
 952     }
 953     if (numEntries < Start + Entries)
 954     {
 955         Entries = numEntries - Start;
 956     }
 957     memcpy(palGDI->IndexedColors + Start, pe, Entries * sizeof(PALETTEENTRY));
 958     PALETTE_ShareUnlockPalette(palGDI);
 959
 960     return Entries;
 961 }
 962
 963 W32KAPI
 964 LONG
 965 APIENTRY
 966 NtGdiDoPalette(
 967     IN HGDIOBJ hObj,
 968     IN WORD iStart,
 969     IN WORD cEntries,
 970     IN LPVOID pUnsafeEntries,
 971     IN DWORD iFunc,
 972     IN BOOL bInbound)
 973 {
 974         LONG ret;
 975         LPVOID pEntries = NULL;
 976
 977         /* FIXME: Handle bInbound correctly */
 978
 979         if (bInbound &&
 980             (pUnsafeEntries == NULL || cEntries == 0))
 981         {
 982                 return 0;
 983         }
 984
 985         if (pUnsafeEntries)
 986         {
 987                 pEntries = ExAllocatePoolWithTag(PagedPool, cEntries * sizeof(PALETTEENTRY), TAG_PALETTE);
 988                 if (!pEntries)
 989                         return 0;
 990                 if (bInbound)
 991                 {
 992                         _SEH2_TRY
 993                         {
 994                                 ProbeForRead(pUnsafeEntries, cEntries * sizeof(PALETTEENTRY), 1);
 995                                 memcpy(pEntries, pUnsafeEntries, cEntries * sizeof(PALETTEENTRY));
 996                         }
 997                         _SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
 998                         {
 999                                 ExFreePoolWithTag(pEntries, TAG_PALETTE);
1000                                 _SEH2_YIELD(return 0);
1001                         }
1002                         _SEH2_END
1003                 }
1004         }
1005
1006         ret = 0;
1007         switch(iFunc)
1008         {
1009                 case GdiPalAnimate:
1010                         if (pEntries)
1011                                 ret = IntAnimatePalette((HPALETTE)hObj, iStart, cEntries, (CONST PPALETTEENTRY)pEntries);
1012                         break;
1013
1014                 case GdiPalSetEntries:
1015                         if (pEntries)
1016                                 ret = IntSetPaletteEntries((HPALETTE)hObj, iStart, cEntries, (CONST LPPALETTEENTRY)pEntries);
1017                         break;
1018
1019                 case GdiPalGetEntries:
1020                         ret = IntGetPaletteEntries((HPALETTE)hObj, iStart, cEntries, (LPPALETTEENTRY)pEntries);
1021                         break;
1022
1023                 case GdiPalGetSystemEntries:
1024                         ret = IntGetSystemPaletteEntries((HDC)hObj, iStart, cEntries, (LPPALETTEENTRY)pEntries);
1025                         break;
1026
1027                 case GdiPalSetColorTable:
1028                         if (pEntries)
1029                                 ret = IntSetDIBColorTable((HDC)hObj, iStart, cEntries, (RGBQUAD*)pEntries);
1030                         break;
1031
1032                 case GdiPalGetColorTable:
1033                         if (pEntries)
1034                                 ret = IntGetDIBColorTable((HDC)hObj, iStart, cEntries, (RGBQUAD*)pEntries);
1035                         break;
1036         }
1037
1038         if (pEntries)
1039         {
1040                 if (!bInbound)
1041                 {
1042                         _SEH2_TRY
1043                         {
1044                                 ProbeForWrite(pUnsafeEntries, cEntries * sizeof(PALETTEENTRY), 1);
1045                                 memcpy(pUnsafeEntries, pEntries, cEntries * sizeof(PALETTEENTRY));
1046                         }
1047                         _SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
1048                         {
1049                                 ret = 0;
1050                         }
1051                         _SEH2_END
1052                 }
1053                 ExFreePoolWithTag(pEntries, TAG_PALETTE);
1054         }
1055
1056         return ret;
1057 }
1058
1059 UINT APIENTRY
1060 NtGdiSetSystemPaletteUse(HDC hDC, UINT Usage)
1061 {
1062     UINT old = SystemPaletteUse;
1063
1064     /* Device doesn't support colour palettes */
1065     if (!(NtGdiGetDeviceCaps(hDC, RASTERCAPS) & RC_PALETTE)) {
1066         return SYSPAL_ERROR;
1067     }
1068
1069     switch (Usage)
1070         {
1071                 case SYSPAL_NOSTATIC:
1072         case SYSPAL_NOSTATIC256:
1073         case SYSPAL_STATIC:
1074                                 SystemPaletteUse = Usage;
1075                                 break;
1076
1077         default:
1078                                 old=SYSPAL_ERROR;
1079                                 break;
1080         }
1081
1082  return old;
1083 }
1084
1085 UINT
1086 APIENTRY
1087 NtGdiGetSystemPaletteUse(HDC hDC)
1088 {
1089     return SystemPaletteUse;
1090 }
1091
1092 BOOL
1093 APIENTRY
1094 NtGdiUpdateColors(HDC hDC)
1095 {
1096    PWND Wnd;
1097    BOOL calledFromUser, ret;
1098    USER_REFERENCE_ENTRY Ref;
1099
1100    calledFromUser = UserIsEntered();
1101
1102    if (!calledFromUser){
1103       UserEnterExclusive();
1104    }
1105
1106    Wnd = UserGetWindowObject(IntWindowFromDC(hDC));
1107    if (Wnd == NULL)
1108    {
1109       EngSetLastError(ERROR_INVALID_WINDOW_HANDLE);
1110
1111       if (!calledFromUser){
1112          UserLeave();
1113       }
1114
1115       return FALSE;
1116    }
1117
1118    UserRefObjectCo(Wnd, &Ref);
1119    ret = co_UserRedrawWindow(Wnd, NULL, 0, RDW_INVALIDATE);
1120    UserDerefObjectCo(Wnd);
1121
1122    if (!calledFromUser){
1123       UserLeave();
1124    }
1125
1126    return ret;
1127 }
1128
1129 BOOL
1130 APIENTRY
1131 NtGdiUnrealizeObject(HGDIOBJ hgdiobj)
1132 {
1133    BOOL Ret = FALSE;
1134    PPALETTE palGDI;
1135
1136    if ( !hgdiobj ||
1137         ((UINT)hgdiobj & GDI_HANDLE_STOCK_MASK) ||
1138         !GDI_HANDLE_IS_TYPE(hgdiobj, GDI_OBJECT_TYPE_PALETTE) )
1139       return Ret;
1140
1141    palGDI = PALETTE_ShareLockPalette(hgdiobj);
1142    if (!palGDI) return FALSE;
1143
1144    // FIXME!!
1145    // Need to do something!!!
1146    // Zero out Current and Old Translated pointers?
1147    //
1148    Ret = TRUE;
1149    PALETTE_ShareUnlockPalette(palGDI);
1150    return Ret;
1151 }
1152
1153
1154 /* EOF */