win32ss/gdi/ntgdi/palette.h

   1 #pragma once
   2
   3 #ifdef _MSC_VER
   4 #pragma warning(disable:4200) // zero-sized array in struct/union
   5 #endif // _MSC_VER
   6
   7 // Palette mode flags
   8 enum _PALFLAGS
   9 {
  10 #ifndef _WINDDI_ // Defined in ddk/winddi.h
  11     PAL_INDEXED         = 0x00000001, // Indexed palette
  12     PAL_BITFIELDS       = 0x00000002, // Bit fields used for DIB, DIB section
  13     PAL_RGB             = 0x00000004, // Red, green, blue
  14     PAL_BGR             = 0x00000008, // Blue, green, red
  15     PAL_CMYK            = 0x00000010, // Cyan, magenta, yellow, black
  16 #endif
  17     PAL_DC              = 0x00000100,
  18     PAL_FIXED           = 0x00000200, // Can't be changed
  19     PAL_FREE            = 0x00000400,
  20     PAL_MANAGED         = 0x00000800,
  21     PAL_NOSTATIC        = 0x00001000,
  22     PAL_MONOCHROME      = 0x00002000, // Two colors only
  23     PAL_BRUSHHACK       = 0x00004000,
  24     PAL_DIBSECTION      = 0x00008000, // Used for a DIB section
  25     PAL_NOSTATIC256     = 0x00010000,
  26     PAL_HT              = 0x00100000, // Halftone palette
  27     PAL_RGB16_555       = 0x00200000, // 16-bit RGB in 555 format
  28     PAL_RGB16_565       = 0x00400000, // 16-bit RGB in 565 format
  29     PAL_GAMMACORRECTION = 0x00800000, // Correct colors
  30 };
  31
  32 typedef struct _PALETTE
  33 {
  34     /* Header for all gdi objects in the handle table.
  35        Do not (re)move this. */
  36     BASEOBJECT    BaseObject;
  37
  38     PALOBJ PalObj;
  39     XLATEOBJ *logicalToSystem;
  40     FLONG flFlags; // PAL_INDEXED, PAL_BITFIELDS, PAL_RGB, PAL_BGR
  41     ULONG NumColors;
  42     PALETTEENTRY *IndexedColors;
  43     ULONG RedMask;
  44     ULONG GreenMask;
  45     ULONG BlueMask;
  46     ULONG ulRedShift;
  47     ULONG ulGreenShift;
  48     ULONG ulBlueShift;
  49     HDEV  hPDev;
  50     PALETTEENTRY apalColors[0];
  51 } PALETTE, *PPALETTE;
  52
  53 extern PALETTE gpalRGB, gpalBGR, gpalRGB555, gpalRGB565, *gppalMono, *gppalDefault;
  54 extern PPALETTE appalSurfaceDefault[];
  55
  56 #define  PALETTE_UnlockPalette(pPalette) GDIOBJ_vUnlockObject((POBJ)pPalette)
  57 #define  PALETTE_ShareLockPalette(hpal) \
  58   ((PPALETTE)GDIOBJ_ShareLockObj((HGDIOBJ)hpal, GDI_OBJECT_TYPE_PALETTE))
  59 #define  PALETTE_ShareUnlockPalette(ppal)  \
  60   GDIOBJ_vDereferenceObject(&ppal->BaseObject)
  61
  62 INIT_FUNCTION
  63 NTSTATUS
  64 NTAPI
  65 InitPaletteImpl(VOID);
  66
  67 PPALETTE
  68 NTAPI
  69 PALETTE_AllocPalette(
  70     _In_ ULONG iMode,
  71     _In_ ULONG cColors,
  72     _In_opt_ const PALETTEENTRY* pEntries,
  73     _In_ FLONG flRed,
  74     _In_ FLONG flGreen,
  75     _In_ FLONG flBlue);
  76
  77 PPALETTE
  78 NTAPI
  79 PALETTE_AllocPalWithHandle(
  80     _In_ ULONG iMode,
  81     _In_ ULONG cColors,
  82     _In_opt_ const PALETTEENTRY* pEntries,
  83     _In_ FLONG flRed,
  84     _In_ FLONG flGreen,
  85     _In_ FLONG flBlue);
  86
  87 VOID
  88 FASTCALL
  89 PALETTE_ValidateFlags(
  90     PALETTEENTRY* lpPalE,
  91     INT size);
  92
  93 INT
  94 FASTCALL
  95 PALETTE_GetObject(
  96     PPALETTE pGdiObject,
  97     INT cbCount,
  98     LPLOGBRUSH lpBuffer);
  99
 100 ULONG
 101 NTAPI
 102 PALETTE_ulGetNearestPaletteIndex(
 103     PPALETTE ppal,
 104     ULONG iColor);
 105
 106 ULONG
 107 NTAPI
 108 PALETTE_ulGetNearestIndex(
 109     PPALETTE ppal,
 110     ULONG iColor);
 111
 112 ULONG
 113 NTAPI
 114 PALETTE_ulGetNearestBitFieldsIndex(
 115     PPALETTE ppal,
 116     ULONG ulColor);
 117
 118 VOID
 119 NTAPI
 120 PALETTE_vGetBitMasks(
 121     PPALETTE ppal,
 122     PULONG pulColors);
 123
 124 VOID
 125 NTAPI
 126 PALETTE_vCleanup(PVOID ObjectBody);
 127
 128 FORCEINLINE
 129 ULONG
 130 CalculateShift(ULONG ulMask1, ULONG ulMask2)
 131 {
 132     ULONG ulShift1, ulShift2;
 133     BitScanReverse(&ulShift1, ulMask1);
 134     BitScanReverse(&ulShift2, ulMask2);
 135     ulShift2 -= ulShift1;
 136     if ((INT)ulShift2 < 0) ulShift2 += 32;
 137     return ulShift2;
 138 }
 139
 140 FORCEINLINE
 141 ULONG
 142 PALETTE_ulGetRGBColorFromIndex(PPALETTE ppal, ULONG ulIndex)
 143 {
 144     if (ulIndex >= ppal->NumColors) return 0;
 145     return RGB(ppal->IndexedColors[ulIndex].peRed,
 146                ppal->IndexedColors[ulIndex].peGreen,
 147                ppal->IndexedColors[ulIndex].peBlue);
 148 }
 149
 150 FORCEINLINE
 151 VOID
 152 PALETTE_vSetRGBColorForIndex(PPALETTE ppal, ULONG ulIndex, COLORREF crColor)
 153 {
 154     if (ulIndex >= ppal->NumColors) return;
 155     ppal->IndexedColors[ulIndex].peRed = GetRValue(crColor);
 156     ppal->IndexedColors[ulIndex].peGreen = GetGValue(crColor);
 157     ppal->IndexedColors[ulIndex].peBlue = GetBValue(crColor);
 158 }
 159
 160 HPALETTE
 161 NTAPI
 162 GreCreatePaletteInternal(
 163     IN LPLOGPALETTE pLogPal,
 164     IN UINT cEntries);
 165