/* null driver fallback implementation for GetSystemPaletteEntries */
UINT nulldrv_GetSystemPaletteEntries( PHYSDEV dev, UINT start, UINT count, PALETTEENTRY *entries )
{
if (entries && start < 256)
{
UINT i;
const RGBQUAD *default_entries;
if (start + count > 256) count = 256 - start;
default_entries = get_default_color_table( 8 );
for (i = 0; i < count; ++i)
{
if (start + i < 10 || start + i >= 246)
{
entries[i].peRed = default_entries[start + i].rgbRed;
entries[i].peGreen = default_entries[start + i].rgbGreen;
entries[i].peBlue = default_entries[start + i].rgbBlue;
}
else
{
entries[i].peRed = 0;
entries[i].peGreen = 0;
entries[i].peBlue = 0;
}
entries[i].peFlags = 0;
}
}
return 0;
}
/***********************************************************************
* CreateHalftonePalette [GDI32.@]
*
* Creates a halftone palette.
*
* RETURNS
* Success: Handle to logical halftone palette
* Failure: 0
*
* FIXME: This simply creates the halftone palette derived from running
* tests on a windows NT machine. This is assuming a color depth
* of greater that 256 color. On a 256 color device the halftone
* palette will be different and this function will be incorrect
*/
HPALETTE WINAPI CreateHalftonePalette(
HDC hdc) /* [in] Handle to device context */
{
const RGBQUAD *entries = get_default_color_table( 8 );
char buffer[FIELD_OFFSET( LOGPALETTE, palPalEntry[256] )];
LOGPALETTE *pal = (LOGPALETTE *)buffer;
int i;
pal->palVersion = 0x300;
pal->palNumEntries = 256;
for (i = 0; i < 256; i++)
{
pal->palPalEntry[i].peRed = entries[i].rgbRed;
pal->palPalEntry[i].peGreen = entries[i].rgbGreen;
pal->palPalEntry[i].peBlue = entries[i].rgbBlue;
pal->palPalEntry[i].peFlags = 0;
}
return CreatePalette( pal );
}
/***********************************************************************
* PALETTE_Init
*
* Create the system palette.
*/
HPALETTE PALETTE_Init(void)
{
const RGBQUAD *entries = get_default_color_table( 8 );
char buffer[FIELD_OFFSET( LOGPALETTE, palPalEntry[20] )];
LOGPALETTE *palPtr = (LOGPALETTE *)buffer;
int i;
/* create default palette (20 system colors) */
palPtr->palVersion = 0x300;
palPtr->palNumEntries = 20;
for (i = 0; i < 20; i++)
{
palPtr->palPalEntry[i].peRed = entries[i < 10 ? i : 236 + i].rgbRed;
palPtr->palPalEntry[i].peGreen = entries[i < 10 ? i : 236 + i].rgbGreen;
palPtr->palPalEntry[i].peBlue = entries[i < 10 ? i : 236 + i].rgbBlue;
palPtr->palPalEntry[i].peFlags = 0;
}
return CreatePalette( palPtr );
}
static void init_dib_info(dib_info *dib, const BITMAPINFOHEADER *bi, const DWORD *bit_fields,
const RGBQUAD *color_table, void *bits, enum dib_info_flags flags)
{
dib->bit_count = bi->biBitCount;
dib->width = bi->biWidth;
dib->height = bi->biHeight;
dib->compression = bi->biCompression;
dib->stride = get_dib_stride( dib->width, dib->bit_count );
dib->bits.ptr = bits;
dib->bits.is_copy = FALSE;
dib->bits.free = NULL;
dib->bits.param = NULL;
if(dib->height < 0) /* top-down */
{
dib->height = -dib->height;
}
else /* bottom-up */
{
/* bits always points to the top-left corner and the stride is -ve */
dib->bits.ptr = (BYTE*)dib->bits.ptr + (dib->height - 1) * dib->stride;
dib->stride = -dib->stride;
}
dib->funcs = &funcs_null;
switch(dib->bit_count)
{
case 32:
if(bi->biCompression == BI_RGB)
bit_fields = bit_fields_888;
init_bit_fields(dib, bit_fields);
if(dib->red_mask == 0xff0000 && dib->green_mask == 0x00ff00 && dib->blue_mask == 0x0000ff)
dib->funcs = &funcs_8888;
else
dib->funcs = &funcs_32;
break;
case 24:
dib->funcs = &funcs_24;
break;
case 16:
if(bi->biCompression == BI_RGB)
bit_fields = bit_fields_555;
init_bit_fields(dib, bit_fields);
if(dib->red_mask == 0x7c00 && dib->green_mask == 0x03e0 && dib->blue_mask == 0x001f)
dib->funcs = &funcs_555;
else
dib->funcs = &funcs_16;
break;
case 8:
dib->funcs = &funcs_8;
break;
case 4:
dib->funcs = &funcs_4;
break;
case 1:
dib->funcs = &funcs_1;
break;
}
if (color_table && bi->biClrUsed)
{
dib->color_table = color_table;
dib->color_table_size = bi->biClrUsed;
}
else if (flags & default_color_table)
{
dib->color_table = get_default_color_table( dib->bit_count );
dib->color_table_size = dib->color_table ? (1 << dib->bit_count) : 0;
}
else
{
dib->color_table = NULL;
dib->color_table_size = 0;
}
}
