95 lines
2.5 KiB
C
95 lines
2.5 KiB
C
|
/*++
|
||
|
|
*
|
||
|
|
* WOW v1.0
|
||
|
|
*
|
||
|
|
* Copyright (c) 1991, Microsoft Corporation
|
||
|
|
*
|
||
|
|
* WGPAL.C
|
||
|
|
* WOW32 16-bit GDI API support
|
||
|
|
*
|
||
|
|
* History:
|
||
|
|
* 07-Mar-1991 Jeff Parsons (jeffpar)
|
||
|
|
* Created.
|
||
|
|
*
|
||
|
|
* 09-Apr-1991 NigelT
|
||
|
|
* Various defines are used here to remove calls to Win32
|
||
|
|
* features which don't work yet.
|
||
|
|
--*/
|
||
|
|
|
||
|
|
|
||
|
|
#include "precomp.h"
|
||
|
|
#pragma hdrstop
|
||
|
|
|
||
|
|
MODNAME(wgpal.c);
|
||
|
|
|
||
|
|
|
||
|
|
ULONG FASTCALL WG32GetSystemPaletteEntries(PVDMFRAME pFrame)
|
||
|
|
{
|
||
|
|
ULONG ul = 0L;
|
||
|
|
PPALETTEENTRY ppal;
|
||
|
|
register PGETSYSTEMPALETTEENTRIES16 parg16;
|
||
|
|
|
||
|
|
GETARGPTR(pFrame, sizeof(GETSYSTEMPALETTEENTRIES16), parg16);
|
||
|
|
|
||
|
|
GETVDMPTR(parg16->f4, parg16->f3 * sizeof(PALETTEENTRY), ppal);
|
||
|
|
|
||
|
|
if( ppal ) {
|
||
|
|
|
||
|
|
ul = GETWORD16(GetSystemPaletteEntries(HDC32(parg16->f1),
|
||
|
|
WORD32(parg16->f2),
|
||
|
|
WORD32(parg16->f3),
|
||
|
|
ppal));
|
||
|
|
|
||
|
|
// if we fail but are on a rgb device, fill in the default 256 entries.
|
||
|
|
// WIN31 just calls Escape(hdc,GETCOLORTABLE) which on NT just calls
|
||
|
|
// GetSysteemPaletteEntries().
|
||
|
|
|
||
|
|
if (!ul && (GetDeviceCaps(HDC32(parg16->f1),BITSPIXEL) > 8))
|
||
|
|
{
|
||
|
|
if (parg16->f4 == 0)
|
||
|
|
{
|
||
|
|
ul = 256;
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
int j;
|
||
|
|
int i = WORD32(parg16->f2);
|
||
|
|
int c = WORD32(parg16->f3);
|
||
|
|
|
||
|
|
if ((c + i) > 256)
|
||
|
|
c = 256 - i;
|
||
|
|
|
||
|
|
if (c > 0)
|
||
|
|
{
|
||
|
|
BYTE abGreenRed[8] = {0x0,0x25,0x48,0x6d,0x92,0xb6,0xdb,0xff};
|
||
|
|
BYTE abBlue[4] = {0x0,0x55,0xaa,0xff};
|
||
|
|
|
||
|
|
// green mask 00000111
|
||
|
|
// red mask 00111000
|
||
|
|
// blue mask 11000000
|
||
|
|
// could certainly do this faster with a table and mem copy
|
||
|
|
// but I don't really care about performance here. Apps
|
||
|
|
// shouldn't be doing this. That is why it is in the wow
|
||
|
|
// layer.
|
||
|
|
|
||
|
|
for (j = 0; j < c; ++j,++i)
|
||
|
|
{
|
||
|
|
ppal[j].peGreen = abGreenRed[i & 0x07];
|
||
|
|
ppal[j].peRed = abGreenRed[(i >> 3) & 0x07];
|
||
|
|
ppal[j].peBlue = abBlue[(i >> 6) & 0x03];
|
||
|
|
ppal[j].peFlags = 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
ul = c;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
FREEVDMPTR(ppal);
|
||
|
|
}
|
||
|
|
|
||
|
|
FREEARGPTR(parg16);
|
||
|
|
|
||
|
|
RETURN(ul);
|
||
|
|
}
|