Intravision/reactos
1
0
Fork 0
mirror of https://github.com/reactos/reactos.git synced 2024-12-28 10:04:49 +00:00
Code Issues Projects Releases Packages Wiki Activity

- Fixed implementation of NtGdiGetNearestColor.

Browse source 
svn path=/trunk/; revision=9387
This commit is contained in:
Filip Navara 2004-05-14 22:20:46 +00:00
parent 759afa4f19
commit 0c9315b3dc
1 changed files with 44 additions and 18 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

62
reactos/subsys/win32k/objects/color.c
View file

@ -16,7 +16,7 @@
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
/* $Id: color.c,v 1.39 2004/05/10 17:07:20 weiden Exp $ */
/* $Id: color.c,v 1.40 2004/05/14 22:20:46 navaraf Exp $ */
#include <w32k.h>
// FIXME: Use PXLATEOBJ logicalToSystem instead of int *mapping
@ -138,31 +138,57 @@ BOOL STDCALL NtGdiGetColorAdjustment(HDC hDC,
UNIMPLEMENTED;
}
COLORREF STDCALL NtGdiGetNearestColor(HDC hDC,
COLORREF Color)
unsigned short GetNumberOfBits(unsigned int dwMask)
{
COLORREF nearest = CLR_INVALID;
PDC dc;
PPALGDI palGDI;
unsigned short wBits;
for (wBits = 0; dwMask; dwMask = dwMask & (dwMask - 1))
wBits++;
return wBits;
}
dc = DC_LockDc(hDC);
if (NULL != dc)
{
COLORREF STDCALL NtGdiGetNearestColor(HDC hDC, COLORREF Color)
{
COLORREF nearest = CLR_INVALID;
PDC dc;
PPALGDI palGDI;
LONG RBits, GBits, BBits;
dc = DC_LockDc(hDC);
if (NULL != dc)
{
HPALETTE hpal = dc->w.hPalette;
palGDI = (PPALGDI) PALETTE_LockPalette(hpal);
if (!palGDI)
{
DC_UnlockDc(hDC);
return nearest;
}
{
DC_UnlockDc(hDC);
return nearest;
}
nearest = COLOR_LookupNearestColor(palGDI->IndexedColors,
palGDI->NumColors, Color);
switch (palGDI->Mode)
{
case PAL_INDEXED:
nearest = COLOR_LookupNearestColor(palGDI->IndexedColors,
palGDI->NumColors, Color);
break;
case PAL_BGR:
case PAL_RGB:
nearest = Color;
break;
case PAL_BITFIELDS:
RBits = 8 - GetNumberOfBits(palGDI->RedMask);
GBits = 8 - GetNumberOfBits(palGDI->GreenMask);
BBits = 8 - GetNumberOfBits(palGDI->BlueMask);
nearest = RGB(
(GetRValue(Color) >> RBits) << RBits,
(GetGValue(Color) >> GBits) << GBits,
(GetBValue(Color) >> BBits) << BBits);
break;
}
PALETTE_UnlockPalette(hpal);
DC_UnlockDc( hDC );
}
DC_UnlockDc(hDC);
}
return nearest;
return nearest;
}
UINT STDCALL NtGdiGetNearestPaletteIndex(HPALETTE hpal,