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wine/objects/palette.c
Dave Hawkes 314b9fdd63 Fix for GetNearestColor so it returns the true color rather than the 
system palette if the device does not support a palette.
2002-02-05 19:44:07 +00:00

933 lines
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/*
* GDI palette objects
*
* Copyright 1993,1994 Alexandre Julliard
* Copyright 1996 Alex Korobka
*
* PALETTEOBJ is documented in the Dr. Dobbs Journal May 1993.
* Information in the "Undocumented Windows" is incorrect.
*/
#include <stdlib.h>
#include <string.h>
#include "winbase.h"
#include "windef.h"
#include "wingdi.h"
#include "wine/winuser16.h"
#include "gdi.h"
#include "color.h"
#include "palette.h"
#include "debugtools.h"
#include "winerror.h"
DEFAULT_DEBUG_CHANNEL(palette);
PALETTE_DRIVER *PALETTE_Driver = NULL;
/* Pointers to USER implementation of SelectPalette/RealizePalette */
/* they will be patched by USER on startup */
FARPROC pfnSelectPalette = NULL;
FARPROC pfnRealizePalette = NULL;
static UINT SystemPaletteUse = SYSPAL_STATIC; /* currently not considered */
static HPALETTE16 hPrimaryPalette = 0; /* used for WM_PALETTECHANGED */
static HPALETTE16 hLastRealizedPalette = 0; /* UnrealizeObject() needs it */
/***********************************************************************
* PALETTE_Init
*
* Create the system palette.
*/
HPALETTE16 PALETTE_Init(void)
{
int i;
HPALETTE16 hpalette;
LOGPALETTE * palPtr;
PALETTEOBJ* palObj;
const PALETTEENTRY* __sysPalTemplate = COLOR_GetSystemPaletteTemplate();
/* create default palette (20 system colors) */
palPtr = HeapAlloc( GetProcessHeap(), 0,
sizeof(LOGPALETTE) + (NB_RESERVED_COLORS-1)*sizeof(PALETTEENTRY));
if (!palPtr) return FALSE;
palPtr->palVersion = 0x300;
palPtr->palNumEntries = NB_RESERVED_COLORS;
for( i = 0; i < NB_RESERVED_COLORS; i ++ )
{
palPtr->palPalEntry[i].peRed = __sysPalTemplate[i].peRed;
palPtr->palPalEntry[i].peGreen = __sysPalTemplate[i].peGreen;
palPtr->palPalEntry[i].peBlue = __sysPalTemplate[i].peBlue;
palPtr->palPalEntry[i].peFlags = 0;
}
hpalette = CreatePalette16( palPtr );
HeapFree( GetProcessHeap(), 0, palPtr );
palObj = (PALETTEOBJ*) GDI_GetObjPtr( hpalette, PALETTE_MAGIC );
if (palObj)
{
if (!(palObj->mapping = HeapAlloc( GetProcessHeap(), 0, sizeof(int) * 20 )))
ERR("Can not create palette mapping -- out of memory!\n");
GDI_ReleaseObj( hpalette );
}
return hpalette;
}
/***********************************************************************
* PALETTE_ValidateFlags
*/
void PALETTE_ValidateFlags(PALETTEENTRY* lpPalE, int size)
{
int i = 0;
for( ; i<size ; i++ )
lpPalE[i].peFlags = PC_SYS_USED | (lpPalE[i].peFlags & 0x07);
}
/***********************************************************************
* CreatePalette (GDI.360)
*/
HPALETTE16 WINAPI CreatePalette16( const LOGPALETTE* palette )
{
return CreatePalette( palette );
}
/***********************************************************************
* CreatePalette [GDI32.@] Creates a logical color palette
*
* RETURNS
* Success: Handle to logical palette
* Failure: NULL
*/
HPALETTE WINAPI CreatePalette(
const LOGPALETTE* palette) /* [in] Pointer to logical color palette */
{
PALETTEOBJ * palettePtr;
HPALETTE hpalette;
int size;
if (!palette) return 0;
TRACE("entries=%i\n", palette->palNumEntries);
size = sizeof(LOGPALETTE) + (palette->palNumEntries - 1) * sizeof(PALETTEENTRY);
if (!(palettePtr = GDI_AllocObject( size + sizeof(int*) +sizeof(GDIOBJHDR),
PALETTE_MAGIC, &hpalette ))) return 0;
memcpy( &palettePtr->logpalette, palette, size );
PALETTE_ValidateFlags(palettePtr->logpalette.palPalEntry,
palettePtr->logpalette.palNumEntries);
palettePtr->mapping = NULL;
GDI_ReleaseObj( hpalette );
TRACE(" returning %04x\n", hpalette);
return hpalette;
}
/***********************************************************************
* CreateHalftonePalette [GDI.529] Creates a halftone palette
*
* RETURNS
* Success: Handle to logical halftone palette
* Failure: 0
*/
HPALETTE16 WINAPI CreateHalftonePalette16(
HDC16 hdc) /* [in] Handle to device context */
{
return CreateHalftonePalette(hdc);
}
/***********************************************************************
* CreateHalftonePalette [GDI32.@] Creates a halftone palette
*
* RETURNS
* Success: Handle to logical halftone palette
* Failure: 0
*
* FIXME: This simply creates the halftone palette dirived from runing
* tests on an windows NT machine. this is assuming a color depth
* of greater that 256 color. On a 256 color device the halftone
* palette will be differnt and this funtion will be incorrect
*/
HPALETTE WINAPI CreateHalftonePalette(
HDC hdc) /* [in] Handle to device context */
{
int i;
struct {
WORD Version;
WORD NumberOfEntries;
PALETTEENTRY aEntries[256];
} Palette;
Palette.Version = 0x300;
Palette.NumberOfEntries = 256;
GetSystemPaletteEntries(hdc, 0, 256, Palette.aEntries);
Palette.NumberOfEntries = 20;
for (i = 0; i < Palette.NumberOfEntries; i++)
{
Palette.aEntries[i].peRed=0xff;
Palette.aEntries[i].peGreen=0xff;
Palette.aEntries[i].peBlue=0xff;
Palette.aEntries[i].peFlags=0x00;
}
Palette.aEntries[0].peRed=0x00;
Palette.aEntries[0].peBlue=0x00;
Palette.aEntries[0].peGreen=0x00;
/* the first 6 */
for (i=1; i <= 6; i++)
{
Palette.aEntries[i].peRed=(i%2)?0x80:0;
Palette.aEntries[i].peGreen=(i==2)?0x80:(i==3)?0x80:(i==6)?0x80:0;
Palette.aEntries[i].peBlue=(i>3)?0x80:0;
}
for (i=7; i <= 12; i++)
{
switch(i)
{
case 7:
Palette.aEntries[i].peRed=0xc0;
Palette.aEntries[i].peBlue=0xc0;
Palette.aEntries[i].peGreen=0xc0;
break;
case 8:
Palette.aEntries[i].peRed=0xc0;
Palette.aEntries[i].peGreen=0xdc;
Palette.aEntries[i].peBlue=0xc0;
break;
case 9:
Palette.aEntries[i].peRed=0xa6;
Palette.aEntries[i].peGreen=0xca;
Palette.aEntries[i].peBlue=0xf0;
break;
case 10:
Palette.aEntries[i].peRed=0xff;
Palette.aEntries[i].peGreen=0xfb;
Palette.aEntries[i].peBlue=0xf0;
break;
case 11:
Palette.aEntries[i].peRed=0xa0;
Palette.aEntries[i].peGreen=0xa0;
Palette.aEntries[i].peBlue=0xa4;
break;
case 12:
Palette.aEntries[i].peRed=0x80;
Palette.aEntries[i].peGreen=0x80;
Palette.aEntries[i].peBlue=0x80;
}
}
for (i=13; i <= 18; i++)
{
Palette.aEntries[i].peRed=(i%2)?0xff:0;
Palette.aEntries[i].peGreen=(i==14)?0xff:(i==15)?0xff:(i==18)?0xff:0;
Palette.aEntries[i].peBlue=(i>15)?0xff:0x00;
}
return CreatePalette((LOGPALETTE *)&Palette);
}
/***********************************************************************
* GetPaletteEntries (GDI.363)
*/
UINT16 WINAPI GetPaletteEntries16( HPALETTE16 hpalette, UINT16 start,
UINT16 count, LPPALETTEENTRY entries )
{
return GetPaletteEntries( hpalette, start, count, entries );
}
/***********************************************************************
* GetPaletteEntries [GDI32.@] Retrieves palette entries
*
* RETURNS
* Success: Number of entries from logical palette
* Failure: 0
*/
UINT WINAPI GetPaletteEntries(
HPALETTE hpalette, /* [in] Handle of logical palette */
UINT start, /* [in] First entry to receive */
UINT count, /* [in] Number of entries to receive */
LPPALETTEENTRY entries) /* [out] Address of array receiving entries */
{
PALETTEOBJ * palPtr;
UINT numEntries;
TRACE("hpal = %04x, count=%i\n", hpalette, count );
palPtr = (PALETTEOBJ *) GDI_GetObjPtr( hpalette, PALETTE_MAGIC );
if (!palPtr) return 0;
/* NOTE: not documented but test show this to be the case */
if (count == 0)
{
int rc = palPtr->logpalette.palNumEntries;
GDI_ReleaseObj( hpalette );
return rc;
}
numEntries = palPtr->logpalette.palNumEntries;
if (start+count > numEntries) count = numEntries - start;
if (entries)
{
if (start >= numEntries)
{
GDI_ReleaseObj( hpalette );
return 0;
}
memcpy( entries, &palPtr->logpalette.palPalEntry[start],
count * sizeof(PALETTEENTRY) );
for( numEntries = 0; numEntries < count ; numEntries++ )
if (entries[numEntries].peFlags & 0xF0)
entries[numEntries].peFlags = 0;
}
GDI_ReleaseObj( hpalette );
return count;
}
/***********************************************************************
* SetPaletteEntries (GDI.364)
*/
UINT16 WINAPI SetPaletteEntries16( HPALETTE16 hpalette, UINT16 start,
UINT16 count, LPPALETTEENTRY entries )
{
return SetPaletteEntries( hpalette, start, count, entries );
}
/***********************************************************************
* SetPaletteEntries [GDI32.@] Sets color values for range in palette
*
* RETURNS
* Success: Number of entries that were set
* Failure: 0
*/
UINT WINAPI SetPaletteEntries(
HPALETTE hpalette, /* [in] Handle of logical palette */
UINT start, /* [in] Index of first entry to set */
UINT count, /* [in] Number of entries to set */
LPPALETTEENTRY entries) /* [in] Address of array of structures */
{
PALETTEOBJ * palPtr;
UINT numEntries;
TRACE("hpal=%04x,start=%i,count=%i\n",hpalette,start,count );
palPtr = (PALETTEOBJ *) GDI_GetObjPtr( hpalette, PALETTE_MAGIC );
if (!palPtr) return 0;
numEntries = palPtr->logpalette.palNumEntries;
if (start >= numEntries)
{
GDI_ReleaseObj( hpalette );
return 0;
}
if (start+count > numEntries) count = numEntries - start;
memcpy( &palPtr->logpalette.palPalEntry[start], entries,
count * sizeof(PALETTEENTRY) );
PALETTE_ValidateFlags(palPtr->logpalette.palPalEntry,
palPtr->logpalette.palNumEntries);
HeapFree( GetProcessHeap(), 0, palPtr->mapping );
palPtr->mapping = NULL;
GDI_ReleaseObj( hpalette );
return count;
}
/***********************************************************************
* ResizePalette (GDI.368)
*/
BOOL16 WINAPI ResizePalette16( HPALETTE16 hPal, UINT16 cEntries )
{
return ResizePalette( hPal, cEntries );
}
/***********************************************************************
* ResizePalette [GDI32.@] Resizes logical palette
*
* RETURNS
* Success: TRUE
* Failure: FALSE
*/
BOOL WINAPI ResizePalette(
HPALETTE hPal, /* [in] Handle of logical palette */
UINT cEntries) /* [in] Number of entries in logical palette */
{
PALETTEOBJ * palPtr = (PALETTEOBJ *) GDI_GetObjPtr( hPal, PALETTE_MAGIC );
UINT cPrevEnt, prevVer;
int prevsize, size = sizeof(LOGPALETTE) + (cEntries - 1) * sizeof(PALETTEENTRY);
int* mapping = NULL;
TRACE("hpal = %04x, prev = %i, new = %i\n",
hPal, palPtr ? palPtr->logpalette.palNumEntries : -1,
cEntries );
if( !palPtr ) return FALSE;
cPrevEnt = palPtr->logpalette.palNumEntries;
prevVer = palPtr->logpalette.palVersion;
prevsize = sizeof(LOGPALETTE) + (cPrevEnt - 1) * sizeof(PALETTEENTRY) +
sizeof(int*) + sizeof(GDIOBJHDR);
size += sizeof(int*) + sizeof(GDIOBJHDR);
mapping = palPtr->mapping;
if (!(palPtr = GDI_ReallocObject( size, hPal, palPtr ))) return FALSE;
if( mapping )
{
int *newMap = (int*) HeapReAlloc(GetProcessHeap(), 0,
mapping, cEntries * sizeof(int) );
if(newMap == NULL)
{
ERR("Can not resize mapping -- out of memory!\n");
GDI_ReleaseObj( hPal );
return FALSE;
}
palPtr->mapping = newMap;
}
if( cEntries > cPrevEnt )
{
if( mapping )
memset(palPtr->mapping + cPrevEnt, 0, (cEntries - cPrevEnt)*sizeof(int));
memset( (BYTE*)palPtr + prevsize, 0, size - prevsize );
PALETTE_ValidateFlags((PALETTEENTRY*)((BYTE*)palPtr + prevsize),
cEntries - cPrevEnt );
}
palPtr->logpalette.palNumEntries = cEntries;
palPtr->logpalette.palVersion = prevVer;
GDI_ReleaseObj( hPal );
return TRUE;
}
/***********************************************************************
* AnimatePalette (GDI.367)
*/
void WINAPI AnimatePalette16( HPALETTE16 hPal, UINT16 StartIndex,
UINT16 NumEntries, const PALETTEENTRY* PaletteColors)
{
AnimatePalette( hPal, StartIndex, NumEntries, PaletteColors );
}
/***********************************************************************
* AnimatePalette [GDI32.@] Replaces entries in logical palette
*
* RETURNS
* Success: TRUE
* Failure: FALSE
*
* FIXME
* Should use existing mapping when animating a primary palette
*/
BOOL WINAPI AnimatePalette(
HPALETTE hPal, /* [in] Handle to logical palette */
UINT StartIndex, /* [in] First entry in palette */
UINT NumEntries, /* [in] Count of entries in palette */
const PALETTEENTRY* PaletteColors) /* [in] Pointer to first replacement */
{
TRACE("%04x (%i - %i)\n", hPal, StartIndex,StartIndex+NumEntries);
if( hPal != GetStockObject(DEFAULT_PALETTE) )
{
PALETTEOBJ* palPtr = (PALETTEOBJ *)GDI_GetObjPtr(hPal, PALETTE_MAGIC);
if (!palPtr) return FALSE;
if( (StartIndex + NumEntries) <= palPtr->logpalette.palNumEntries )
{
UINT u;
for( u = 0; u < NumEntries; u++ )
palPtr->logpalette.palPalEntry[u + StartIndex] = PaletteColors[u];
PALETTE_Driver->
pSetMapping(palPtr, StartIndex, NumEntries,
hPal != hPrimaryPalette );
GDI_ReleaseObj( hPal );
return TRUE;
}
GDI_ReleaseObj( hPal );
}
return FALSE;
}
/***********************************************************************
* SetSystemPaletteUse (GDI.373)
*/
UINT16 WINAPI SetSystemPaletteUse16( HDC16 hdc, UINT16 use )
{
return SetSystemPaletteUse( hdc, use );
}
/***********************************************************************
* SetSystemPaletteUse [GDI32.@]
*
* RETURNS
* Success: Previous system palette
* Failure: SYSPAL_ERROR
*/
UINT WINAPI SetSystemPaletteUse(
HDC hdc, /* [in] Handle of device context */
UINT use) /* [in] Palette-usage flag */
{
UINT old = SystemPaletteUse;
FIXME("(%04x,%04x): stub\n", hdc, use );
SystemPaletteUse = use;
return old;
}
/***********************************************************************
* GetSystemPaletteUse (GDI.374)
*/
UINT16 WINAPI GetSystemPaletteUse16( HDC16 hdc )
{
return SystemPaletteUse;
}
/***********************************************************************
* GetSystemPaletteUse [GDI32.@] Gets state of system palette
*
* RETURNS
* Current state of system palette
*/
UINT WINAPI GetSystemPaletteUse(
HDC hdc) /* [in] Handle of device context */
{
return SystemPaletteUse;
}
/***********************************************************************
* GetSystemPaletteEntries (GDI.375)
*/
UINT16 WINAPI GetSystemPaletteEntries16( HDC16 hdc, UINT16 start, UINT16 count,
LPPALETTEENTRY entries )
{
return GetSystemPaletteEntries( hdc, start, count, entries );
}
/***********************************************************************
* GetSystemPaletteEntries [GDI32.@] Gets range of palette entries
*
* RETURNS
* Success: Number of entries retrieved from palette
* Failure: 0
*/
UINT WINAPI GetSystemPaletteEntries(
HDC hdc, /* [in] Handle of device context */
UINT start, /* [in] Index of first entry to be retrieved */
UINT count, /* [in] Number of entries to be retrieved */
LPPALETTEENTRY entries) /* [out] Array receiving system-palette entries */
{
UINT i;
INT sizePalette = GetDeviceCaps( hdc, SIZEPALETTE );
TRACE("hdc=%04x,start=%i,count=%i\n", hdc,start,count);
if (!entries) return sizePalette;
if (start >= sizePalette) return 0;
if (start+count >= sizePalette) count = sizePalette - start;
for (i = 0; i < count; i++)
{
*(COLORREF*)(entries + i) = COLOR_GetSystemPaletteEntry( start + i );
TRACE("\tidx(%02x) -> RGB(%08lx)\n",
start + i, *(COLORREF*)(entries + i) );
}
return count;
}
/***********************************************************************
* GetNearestPaletteIndex (GDI.370)
*/
UINT16 WINAPI GetNearestPaletteIndex16( HPALETTE16 hpalette, COLORREF color )
{
return GetNearestPaletteIndex( hpalette, color );
}
/***********************************************************************
* GetNearestPaletteIndex [GDI32.@] Gets palette index for color
*
* NOTES
* Should index be initialized to CLR_INVALID instead of 0?
*
* RETURNS
* Success: Index of entry in logical palette
* Failure: CLR_INVALID
*/
UINT WINAPI GetNearestPaletteIndex(
HPALETTE hpalette, /* [in] Handle of logical color palette */
COLORREF color) /* [in] Color to be matched */
{
PALETTEOBJ* palObj = (PALETTEOBJ*)GDI_GetObjPtr( hpalette, PALETTE_MAGIC );
UINT index = 0;
if( palObj )
{
index = COLOR_PaletteLookupPixel(palObj->logpalette.palPalEntry,
palObj->logpalette.palNumEntries,
NULL, color, FALSE );
GDI_ReleaseObj( hpalette );
}
TRACE("(%04x,%06lx): returning %d\n", hpalette, color, index );
return index;
}
/***********************************************************************
* GetNearestColor (GDI.154)
*/
COLORREF WINAPI GetNearestColor16( HDC16 hdc, COLORREF color )
{
return GetNearestColor( hdc, color );
}
/***********************************************************************
* GetNearestColor [GDI32.@] Gets a system color to match
*
* RETURNS
* Success: Color from system palette that corresponds to given color
* Failure: CLR_INVALID
*/
COLORREF WINAPI GetNearestColor(
HDC hdc, /* [in] Handle of device context */
COLORREF color) /* [in] Color to be matched */
{
COLORREF nearest = CLR_INVALID;
DC *dc;
PALETTEOBJ *palObj;
if(!(GetDeviceCaps(hdc, RASTERCAPS) & RC_PALETTE)) {
return color;
}
if ( (dc = DC_GetDCPtr( hdc )) )
{
HPALETTE hpal = (dc->hPalette)? dc->hPalette : GetStockObject( DEFAULT_PALETTE );
palObj = GDI_GetObjPtr( hpal, PALETTE_MAGIC );
if (!palObj) {
GDI_ReleaseObj( hdc );
return nearest;
}
nearest = COLOR_LookupNearestColor( palObj->logpalette.palPalEntry,
palObj->logpalette.palNumEntries, color );
GDI_ReleaseObj( hpal );
GDI_ReleaseObj( hdc );
}
TRACE("(%06lx): returning %06lx\n", color, nearest );
return nearest;
}
/***********************************************************************
* PALETTE_GetObject
*/
int PALETTE_GetObject( PALETTEOBJ * palette, int count, LPSTR buffer )
{
if (count > sizeof(WORD)) count = sizeof(WORD);
memcpy( buffer, &palette->logpalette.palNumEntries, count );
return count;
}
/***********************************************************************
* PALETTE_UnrealizeObject
*/
BOOL PALETTE_UnrealizeObject( HPALETTE16 hpalette, PALETTEOBJ *palette )
{
if (palette->mapping)
{
HeapFree( GetProcessHeap(), 0, palette->mapping );
palette->mapping = NULL;
}
if (hLastRealizedPalette == hpalette) hLastRealizedPalette = 0;
return TRUE;
}
/***********************************************************************
* PALETTE_DeleteObject
*/
BOOL PALETTE_DeleteObject( HPALETTE16 hpalette, PALETTEOBJ *palette )
{
HeapFree( GetProcessHeap(), 0, palette->mapping );
if (hLastRealizedPalette == hpalette) hLastRealizedPalette = 0;
return GDI_FreeObject( hpalette, palette );
}
/***********************************************************************
* GDISelectPalette (GDI.361)
*/
HPALETTE16 WINAPI GDISelectPalette16( HDC16 hdc, HPALETTE16 hpal, WORD wBkg)
{
HPALETTE16 prev;
DC *dc;
TRACE("%04x %04x\n", hdc, hpal );
if (GetObjectType(hpal) != OBJ_PAL)
{
WARN("invalid selected palette %04x\n",hpal);
return 0;
}
if (!(dc = DC_GetDCPtr( hdc ))) return 0;
prev = dc->hPalette;
dc->hPalette = hpal;
GDI_ReleaseObj( hdc );
if (!wBkg) hPrimaryPalette = hpal;
return prev;
}
/***********************************************************************
* GDIRealizePalette (GDI.362)
*/
UINT16 WINAPI GDIRealizePalette16( HDC16 hdc )
{
PALETTEOBJ* palPtr;
int realized = 0;
DC* dc = DC_GetDCPtr( hdc );
if (!dc) return 0;
TRACE("%04x...\n", hdc );
if(dc->hPalette != hLastRealizedPalette )
{
if( dc->hPalette == GetStockObject( DEFAULT_PALETTE )) {
realized = RealizeDefaultPalette16( hdc );
GDI_ReleaseObj( hdc );
return (UINT16)realized;
}
palPtr = (PALETTEOBJ *) GDI_GetObjPtr( dc->hPalette, PALETTE_MAGIC );
if (!palPtr) {
GDI_ReleaseObj( hdc );
FIXME("invalid selected palette %04x\n",dc->hPalette);
return 0;
}
realized = PALETTE_Driver->
pSetMapping(palPtr,0,palPtr->logpalette.palNumEntries,
(dc->hPalette != hPrimaryPalette) ||
(dc->hPalette == GetStockObject( DEFAULT_PALETTE )));
hLastRealizedPalette = dc->hPalette;
GDI_ReleaseObj( dc->hPalette );
}
else TRACE(" skipping (hLastRealizedPalette = %04x)\n",
hLastRealizedPalette);
GDI_ReleaseObj( hdc );
TRACE(" realized %i colors.\n", realized );
return (UINT16)realized;
}
/***********************************************************************
* RealizeDefaultPalette (GDI.365)
*/
UINT16 WINAPI RealizeDefaultPalette16( HDC16 hdc )
{
UINT16 ret = 0;
DC *dc;
PALETTEOBJ* palPtr;
TRACE("%04x\n", hdc );
if (!(dc = DC_GetDCPtr( hdc ))) return 0;
if (!(dc->flags & DC_MEMORY))
{
palPtr = (PALETTEOBJ*)GDI_GetObjPtr( GetStockObject(DEFAULT_PALETTE), PALETTE_MAGIC );
if (palPtr)
{
/* lookup is needed to account for SetSystemPaletteUse() stuff */
ret = PALETTE_Driver->pUpdateMapping(palPtr);
GDI_ReleaseObj( GetStockObject(DEFAULT_PALETTE) );
}
}
GDI_ReleaseObj( hdc );
return ret;
}
/***********************************************************************
* IsDCCurrentPalette (GDI.412)
*/
BOOL16 WINAPI IsDCCurrentPalette16(HDC16 hDC)
{
DC *dc = DC_GetDCPtr( hDC );
if (dc)
{
BOOL bRet = dc->hPalette == hPrimaryPalette;
GDI_ReleaseObj( hDC );
return bRet;
}
return FALSE;
}
/***********************************************************************
* SelectPalette [GDI32.@] Selects logical palette into DC
*
* RETURNS
* Success: Previous logical palette
* Failure: NULL
*/
HPALETTE WINAPI SelectPalette(
HDC hDC, /* [in] Handle of device context */
HPALETTE hPal, /* [in] Handle of logical color palette */
BOOL bForceBackground) /* [in] Foreground/background mode */
{
return pfnSelectPalette( hDC, hPal, bForceBackground );
}
/***********************************************************************
* RealizePalette [GDI32.@] Maps palette entries to system palette
*
* RETURNS
* Success: Number of entries in logical palette
* Failure: GDI_ERROR
*/
UINT WINAPI RealizePalette(
HDC hDC) /* [in] Handle of device context */
{
return pfnRealizePalette( hDC );
}
typedef HWND (WINAPI *WindowFromDC_funcptr)( HDC );
typedef BOOL (WINAPI *RedrawWindow_funcptr)( HWND, const RECT *, HRGN, UINT );
/**********************************************************************
* UpdateColors [GDI32.@] Remaps current colors to logical palette
*
* RETURNS
* Success: TRUE
* Failure: FALSE
*/
BOOL WINAPI UpdateColors(
HDC hDC) /* [in] Handle of device context */
{
HMODULE mod;
int size = GetDeviceCaps( hDC, SIZEPALETTE );
if (!size) return 0;
mod = GetModuleHandleA("user32.dll");
if (mod)
{
WindowFromDC_funcptr pWindowFromDC = (WindowFromDC_funcptr)GetProcAddress(mod,"WindowFromDC");
if (pWindowFromDC)
{
HWND hWnd = pWindowFromDC( hDC );
/* Docs say that we have to remap current drawable pixel by pixel
* but it would take forever given the speed of XGet/PutPixel.
*/
if (hWnd && size)
{
RedrawWindow_funcptr pRedrawWindow = GetProcAddress( mod, "RedrawWindow" );
if (pRedrawWindow) pRedrawWindow( hWnd, NULL, 0, RDW_INVALIDATE );
}
}
}
return 0x666;
}
/**********************************************************************
* UpdateColors (GDI.366)
*/
INT16 WINAPI UpdateColors16( HDC16 hDC )
{
UpdateColors( hDC );
return TRUE;
}
/*********************************************************************
* SetMagicColors (GDI.606)
*/
VOID WINAPI SetMagicColors16(HDC16 hDC, COLORREF color, UINT16 index)
{
FIXME("(hDC %04x, color %04x, index %04x): stub\n", hDC, (int)color, index);
}
/**********************************************************************
* GetICMProfileA [GDI32.@]
*
* Returns the filename of the specified device context's color
* management profile, even if color management is not enabled
* for that DC.
*
* RETURNS
* TRUE if name copied succesfully OR lpszFilename is NULL
* FALSE if the buffer length pointed to by lpcbName is too small
*
* NOTE
* The buffer length pointed to by lpcbName is ALWAYS updated to
* the length required regardless of other actions this function
* may take.
*
* FIXME
* How does Windows assign these? Some registry key?
*/
#define WINEICM "winefake.icm" /* easy-to-identify fake filename */
/*********************************************************************/
BOOL WINAPI GetICMProfileA(HDC hDC, LPDWORD lpcbName, LPSTR lpszFilename)
{
DWORD callerLen;
FIXME("(%04x, %p, %p): partial stub\n", hDC, lpcbName, lpszFilename);
callerLen = *lpcbName;
/* all 3 behaviors require the required buffer size to be set */
*lpcbName = strlen(WINEICM);
/* behavior 1: if lpszFilename is NULL, return size of string and no error */
if ((DWORD)lpszFilename == (DWORD)0x00000000)
return TRUE;
/* behavior 2: if buffer size too small, return size of string and error */
if (callerLen < strlen(WINEICM))
{
SetLastError(ERROR_INSUFFICIENT_BUFFER);
return FALSE;
}
/* behavior 3: if buffer size OK and pointer not NULL, copy and return size */
strcpy(lpszFilename, WINEICM);
return TRUE;
}
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