PDC
NTAPI
DC_AllocDcWithHandle()
{
PDC pdc;
pdc = (PDC)GDIOBJ_AllocateObject(GDIObjType_DC_TYPE,
sizeof(DC),
BASEFLAG_LOOKASIDE);
if (!pdc)
{
DPRINT1("Could not allocate a DC.\n");
return NULL;
}
if (!GDIOBJ_hInsertObject(&pdc->BaseObject, GDI_OBJ_HMGR_POWNED))
{
DPRINT1("Could not insert DC into handle table.\n");
GDIOBJ_vFreeObject(&pdc->BaseObject);
return NULL;
}
pdc->pdcattr = &pdc->dcattr;
return pdc;
}
PPALETTE
NTAPI
PALETTE_AllocPalette2(ULONG Mode,
ULONG NumColors,
ULONG *Colors,
ULONG Red,
ULONG Green,
ULONG Blue)
{
PPALETTE PalGDI;
PalGDI = (PPALETTE)GDIOBJ_AllocateObject(GDIObjType_PAL_TYPE,
sizeof(PALETTE),
BASEFLAG_LOOKASIDE);
if (!PalGDI)
{
DPRINT1("Could not allocate a palette.\n");
return NULL;
}
PalGDI->Self = PalGDI->BaseObject.hHmgr;
PalGDI->flFlags = Mode;
if (NULL != Colors)
{
PalGDI->IndexedColors = ExAllocatePoolWithTag(PagedPool,
sizeof(PALETTEENTRY) * NumColors,
TAG_PALETTE);
if (NULL == PalGDI->IndexedColors)
{
GDIOBJ_vDeleteObject(&PalGDI->BaseObject);
return NULL;
}
RtlCopyMemory(PalGDI->IndexedColors, Colors, sizeof(PALETTEENTRY) * NumColors);
}
if (Mode & PAL_INDEXED)
{
PalGDI->NumColors = NumColors;
}
else if (Mode & PAL_BITFIELDS)
{
PalGDI->RedMask = Red;
PalGDI->GreenMask = Green;
PalGDI->BlueMask = Blue;
if (Red == 0x7c00 && Green == 0x3E0 && Blue == 0x1F)
PalGDI->flFlags |= PAL_RGB16_555;
else if (Red == 0xF800 && Green == 0x7E0 && Blue == 0x1F)
PalGDI->flFlags |= PAL_RGB16_565;
else if (Red == 0xFF0000 && Green == 0xFF00 && Blue == 0xFF)
PalGDI->flFlags |= PAL_BGR;
else if (Red == 0xFF && Green == 0xFF00 && Blue == 0xFF0000)
PalGDI->flFlags |= PAL_RGB;
}
return PalGDI;
}
HPALETTE
FASTCALL
PALETTE_AllocPaletteIndexedRGB(ULONG NumColors,
CONST RGBQUAD *Colors)
{
HPALETTE NewPalette;
PPALETTE PalGDI;
UINT i;
PalGDI = (PPALETTE)GDIOBJ_AllocateObject(GDIObjType_PAL_TYPE,
sizeof(PALETTE),
BASEFLAG_LOOKASIDE);
if (!PalGDI)
{
DPRINT1("Could not allocate a palette.\n");
return NULL;
}
if (!GDIOBJ_hInsertObject(&PalGDI->BaseObject, GDI_OBJ_HMGR_POWNED))
{
DPRINT1("Could not insert palette into handle table.\n");
GDIOBJ_vFreeObject(&PalGDI->BaseObject);
return NULL;
}
NewPalette = PalGDI->BaseObject.hHmgr;
PalGDI->Self = NewPalette;
PalGDI->flFlags = PAL_INDEXED;
PalGDI->IndexedColors = ExAllocatePoolWithTag(PagedPool,
sizeof(PALETTEENTRY) * NumColors,
TAG_PALETTE);
if (NULL == PalGDI->IndexedColors)
{
GDIOBJ_vDeleteObject(&PalGDI->BaseObject);
return NULL;
}
for (i = 0; i < NumColors; i++)
{
PalGDI->IndexedColors[i].peRed = Colors[i].rgbRed;
PalGDI->IndexedColors[i].peGreen = Colors[i].rgbGreen;
PalGDI->IndexedColors[i].peBlue = Colors[i].rgbBlue;
PalGDI->IndexedColors[i].peFlags = 0;
}
PalGDI->NumColors = NumColors;
PALETTE_UnlockPalette(PalGDI);
return NewPalette;
}
PPALETTE
NTAPI
PALETTE_AllocPalette(
_In_ ULONG iMode,
_In_ ULONG cColors,
_In_opt_ const PALETTEENTRY* pEntries,
_In_ FLONG flRed,
_In_ FLONG flGreen,
_In_ FLONG flBlue)
{
PPALETTE ppal;
ULONG fl = 0, cjSize = sizeof(PALETTE);
/* Check if the palette has entries */
if (iMode & PAL_INDEXED)
{
/* Check color count */
if ((cColors == 0) || (cColors > 1024)) return NULL;
/* Allocate enough space for the palete entries */
cjSize += cColors * sizeof(PALETTEENTRY);
}
else
{
/* There are no palette entries */
cColors = 0;
/* We can use the lookaside list */
fl |= BASEFLAG_LOOKASIDE;
}
/* Allocate the object (without a handle!) */
ppal = (PPALETTE)GDIOBJ_AllocateObject(GDIObjType_PAL_TYPE, cjSize, fl);
if (!ppal)
{
return NULL;
}
/* Set mode, color count and entry pointer */
ppal->flFlags = iMode;
ppal->NumColors = cColors;
ppal->IndexedColors = ppal->apalColors;
/* Check what kind of palette this is */
if (iMode & PAL_INDEXED)
{
/* Check if we got a color array */
if (pEntries)
{
/* Copy the entries */
RtlCopyMemory(ppal->IndexedColors, pEntries, cColors * sizeof(pEntries[0]));
}
}
else if (iMode & PAL_BITFIELDS)
{
/* Copy the color masks */
ppal->RedMask = flRed;
ppal->GreenMask = flGreen;
ppal->BlueMask = flBlue;
/* Check what masks we have and set optimization flags */
if ((flRed == 0x7c00) && (flGreen == 0x3E0) && (flBlue == 0x1F))
ppal->flFlags |= PAL_RGB16_555;
else if ((flRed == 0xF800) && (flGreen == 0x7E0) && (flBlue == 0x1F))
ppal->flFlags |= PAL_RGB16_565;
else if ((flRed == 0xFF0000) && (flGreen == 0xFF00) && (flBlue == 0xFF))
ppal->flFlags |= PAL_BGR;
else if ((flRed == 0xFF) && (flGreen == 0xFF00) && (flBlue == 0xFF0000))
ppal->flFlags |= PAL_RGB;
}
return ppal;
}
