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Sweden-Number/objects/palette.c

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/*
* GDI palette objects
*
* Copyright 1993,1994 Alexandre Julliard
* Copyright 1996 Alex Korobka
*
*/
#include <stdlib.h>
#include <string.h>
#include <X11/Xlib.h>
#include "color.h"
#include "palette.h"
#include "stddebug.h"
/* #define DEBUG_PALETTE */
#include "debug.h"
extern int COLOR_LookupSystemPixel(COLORREF); /* lookup pixel among static entries
* of the system palette */
extern COLORREF COLOR_GetSystemPaletteEntry(BYTE);
static WORD SystemPaletteUse = SYSPAL_STATIC; /* currently not considered */
static HPALETTE16 hPrimaryPalette = 0; /* used for WM_PALETTECHANGED */
static HPALETTE16 hLastRealizedPalette = 0; /* UnrealizeObject() needs it */
/***********************************************************************
* 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 CreatePalette( const LOGPALETTE* palette )
{
PALETTEOBJ * palettePtr;
HPALETTE16 hpalette;
int size = sizeof(LOGPALETTE) + (palette->palNumEntries - 1) * sizeof(PALETTEENTRY);
dprintf_palette(stddeb,"CreatePalette: ");
dprintf_palette(stddeb,"%i entries, ", palette->palNumEntries);
hpalette = GDI_AllocObject( size + sizeof(int*) +sizeof(GDIOBJHDR) , PALETTE_MAGIC );
if (!hpalette) return 0;
palettePtr = (PALETTEOBJ *) GDI_HEAP_LIN_ADDR( hpalette );
memcpy( &palettePtr->logpalette, palette, size );
PALETTE_ValidateFlags(palettePtr->logpalette.palPalEntry,
palettePtr->logpalette.palNumEntries);
palettePtr->mapping = NULL;
dprintf_palette(stddeb,"returning %04x\n", hpalette);
return hpalette;
}
/***********************************************************************
* GetPaletteEntries (GDI.363)
*/
WORD GetPaletteEntries( HPALETTE16 hpalette, WORD start, WORD count,
LPPALETTEENTRY entries )
{
PALETTEOBJ * palPtr;
int numEntries;
dprintf_palette(stddeb,"GetPaletteEntries: hpal = %04x, %i entries\n", hpalette, count);
palPtr = (PALETTEOBJ *) GDI_GetObjPtr( hpalette, PALETTE_MAGIC );
if (!palPtr) return 0;
numEntries = palPtr->logpalette.palNumEntries;
if (start >= numEntries) return 0;
if (start+count > numEntries) count = numEntries - start;
memcpy( entries, &palPtr->logpalette.palPalEntry[start],
count * sizeof(PALETTEENTRY) );
for( numEntries = 0; numEntries < count ; numEntries++ )
if( entries[numEntries].peFlags & 0xF0 ) entries[numEntries].peFlags = 0;
return count;
}
/***********************************************************************
* SetPaletteEntries (GDI.364)
*/
WORD SetPaletteEntries( HPALETTE16 hpalette, WORD start, WORD count,
LPPALETTEENTRY entries )
{
PALETTEOBJ * palPtr;
int numEntries;
dprintf_palette(stddeb,"SetPaletteEntries: hpal = %04x, %i entries\n", hpalette, count);
palPtr = (PALETTEOBJ *) GDI_GetObjPtr( hpalette, PALETTE_MAGIC );
if (!palPtr) return 0;
numEntries = palPtr->logpalette.palNumEntries;
if (start >= numEntries) 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);
free(palPtr->mapping);
palPtr->mapping = NULL;
return count;
}
/***********************************************************************
* ResizePalette (GDI.368)
*/
BOOL ResizePalette(HPALETTE16 hPal, UINT cEntries)
{
/* should simply realloc memory and zero out
* added entries, if any */
fprintf(stdnimp,"ResizePalette: empty stub! \n");
return FALSE;
}
/***********************************************************************
* AnimatePalette (GDI.367)
*/
BOOL AnimatePalette(HPALETTE16 hPal, UINT StartIndex, UINT NumEntries,
LPPALETTEENTRY PaletteColors)
{
fprintf(stdnimp,"AnimatePalette: empty stub! \n");
return TRUE;
}
/***********************************************************************
* SetSystemPaletteUse (GDI.373)
*/
WORD SetSystemPaletteUse( HDC hdc, WORD use)
{
WORD old=SystemPaletteUse;
fprintf(stdnimp,"SetSystemPaletteUse(%04x,%04x) // empty stub !!!\n", hdc, use);
SystemPaletteUse=use;
return old;
}
/***********************************************************************
* GetSystemPaletteUse (GDI.374)
*/
WORD GetSystemPaletteUse( HDC hdc )
{
fprintf(stdnimp,"GetSystemPaletteUse(%04x) // empty stub !!!\n", hdc);
return SystemPaletteUse;
}
/***********************************************************************
* GetSystemPaletteEntries (GDI.375)
*/
WORD GetSystemPaletteEntries( HDC hdc, WORD start, WORD count,
LPPALETTEENTRY entries )
{
WORD i;
DC *dc;
dprintf_palette(stddeb,"GetSystemPaletteEntries: hdc = %04x, cound = %i", hdc, count );
if (!(dc = (DC *) GDI_GetObjPtr( hdc, DC_MAGIC ))) return 0;
if (start >= dc->w.devCaps->sizePalette) return 0;
if (start+count >= dc->w.devCaps->sizePalette)
count = dc->w.devCaps->sizePalette - start;
for (i = 0; i < count; i++)
{
*(COLORREF*)(entries + i) = COLOR_GetSystemPaletteEntry((BYTE)(start + i));
dprintf_palette(stddeb,"\tidx(%02x) -> RGB(%08lx)\n", (unsigned char)(start + i),
*(COLORREF*)(entries + i) );
}
return count;
}
/***********************************************************************
* GetNearestPaletteIndex (GDI.370)
*/
WORD GetNearestPaletteIndex( HPALETTE16 hpalette, COLORREF color )
{
PALETTEOBJ* palObj = (PALETTEOBJ*) GDI_GetObjPtr( hpalette, PALETTE_MAGIC );
WORD index = 0;
if( palObj )
index = COLOR_PaletteLookupPixel( palObj->logpalette.palPalEntry,
palObj->logpalette.palNumEntries, NULL,
color, FALSE );
dprintf_palette(stddeb,"GetNearestPaletteIndex(%04x,%06lx): returning %d\n",
hpalette, color, index );
return index;
}
/***********************************************************************
* GetNearestColor (GDI.154)
*/
COLORREF GetNearestColor( HDC hdc, COLORREF color )
{
COLORREF nearest = 0xFADECAFE;
DC *dc;
PALETTEOBJ *palObj;
if ( (dc = (DC *) GDI_GetObjPtr( hdc, DC_MAGIC )) )
{
palObj = (PALETTEOBJ*)
GDI_GetObjPtr( (dc->w.hPalette)? dc->w.hPalette
: STOCK_DEFAULT_PALETTE, PALETTE_MAGIC );
nearest = COLOR_LookupNearestColor( palObj->logpalette.palPalEntry,
palObj->logpalette.palNumEntries, color );
}
dprintf_palette(stddeb,"GetNearestColor(%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)
{
free( palette->mapping );
palette->mapping = NULL;
}
if (hLastRealizedPalette == hpalette) hLastRealizedPalette = 0;
return TRUE;
}
/***********************************************************************
* PALETTE_DeleteObject
*/
BOOL PALETTE_DeleteObject( HPALETTE16 hpalette, PALETTEOBJ *palette )
{
free( palette->mapping );
return GDI_FreeObject( hpalette );
}
/***********************************************************************
* GDISelectPalette (GDI.361)
*/
HPALETTE16 GDISelectPalette( HDC hdc, HPALETTE16 hpal, WORD wBkg)
{
HPALETTE16 prev;
DC *dc;
dprintf_palette(stddeb, "GDISelectPalette: %04x %04x\n", hdc, hpal );
dc = (DC *) GDI_GetObjPtr( hdc, DC_MAGIC );
if (!dc)
{
dc = (DC *)GDI_GetObjPtr(hdc, METAFILE_DC_MAGIC);
if (!dc) return 0;
}
prev = dc->w.hPalette;
dc->w.hPalette = hpal;
if (!wBkg) hPrimaryPalette = hpal;
return prev;
}
/***********************************************************************
* GDIRealizePalette (GDI.362)
*
*/
UINT GDIRealizePalette( HDC hdc )
{
PALETTEOBJ* palPtr;
int realized = 0;
DC* dc = (DC *) GDI_GetObjPtr( hdc, DC_MAGIC );
if (!dc)
{
dc = (DC *)GDI_GetObjPtr(hdc, METAFILE_DC_MAGIC);
if (!dc) return 0;
}
dprintf_palette(stddeb, "GDIRealizePalette: %04x...", hdc );
if( dc && dc->w.hPalette != hLastRealizedPalette )
{
if( dc->w.hPalette == STOCK_DEFAULT_PALETTE )
return RealizeDefaultPalette( hdc );
palPtr = (PALETTEOBJ *) GDI_GetObjPtr( dc->w.hPalette, PALETTE_MAGIC );
realized = COLOR_SetMapping(palPtr, dc->w.hPalette != hPrimaryPalette
|| dc->w.hPalette == STOCK_DEFAULT_PALETTE );
hLastRealizedPalette = dc->w.hPalette;
}
else dprintf_palette(stddeb, " skipping ");
dprintf_palette(stdnimp, " realized %i colors\n", realized );
return (UINT)realized;
}
/***********************************************************************
* RealizeDefaultPalette (GDI.365)
*/
WORD RealizeDefaultPalette( HDC hdc )
{
DC *dc;
PALETTEOBJ* palPtr;
int i, index, realized = 0;
dprintf_palette(stddeb,"RealizeDefaultPalette: %04x\n", hdc );
dc = (DC *) GDI_GetObjPtr( hdc, DC_MAGIC );
if (!dc)
{
dc = (DC *)GDI_GetObjPtr(hdc, METAFILE_DC_MAGIC);
if (!dc) return 0;
}
if ( dc->w.flags & DC_MEMORY ) return 0;
hPrimaryPalette = STOCK_DEFAULT_PALETTE;
hLastRealizedPalette = STOCK_DEFAULT_PALETTE;
palPtr = (PALETTEOBJ*)GDI_GetObjPtr(STOCK_DEFAULT_PALETTE, PALETTE_MAGIC );
/* lookup is needed to account for SetSystemPaletteUse() stuff */
for( i = 0; i < 20; i++ )
{
index = COLOR_LookupSystemPixel(*(COLORREF*)(palPtr->logpalette.palPalEntry + i));
/* mapping is allocated in COLOR_InitPalette() */
if( index != palPtr->mapping[i] ) { palPtr->mapping[i]=index; realized++; }
}
return realized;
}
/***********************************************************************
* IsDCCurrentPalette (GDI.412)
*/
BOOL IsDCCurrentPalette(HDC hDC)
{
DC* dc = (DC *)GDI_GetObjPtr( hDC, DC_MAGIC );
return (dc)?(dc->w.hPalette == hPrimaryPalette):FALSE;
}
/***********************************************************************
* SelectPalette (USER.282)
*/
HPALETTE16 SelectPalette( HDC hDC, HPALETTE16 hPal, BOOL bForceBackground )
{
WORD wBkgPalette = 1;
PALETTEOBJ* lpt = (PALETTEOBJ*) GDI_GetObjPtr( hPal, PALETTE_MAGIC );
dprintf_palette(stddeb,"SelectPalette: dc %04x pal %04x, force=%i ",
hDC, hPal, bForceBackground);
if( !lpt ) return 0;
dprintf_palette(stddeb," entries = %d\n",
lpt->logpalette.palNumEntries);
if( hPal != STOCK_DEFAULT_PALETTE )
{
HWND hWnd = WindowFromDC( hDC );
HWND hActive = GetActiveWindow();
/* set primary palette if it's related to current active */
if((!hWnd || (hActive == hWnd || IsChild(hActive,hWnd))) &&
!bForceBackground )
wBkgPalette = 0;
}
return GDISelectPalette( hDC, hPal, wBkgPalette);
}
/***********************************************************************
* RealizePalette (USER.283) (GDI32.280)
*/
UINT16 RealizePalette( HDC32 hDC )
{
UINT16 realized = GDIRealizePalette( hDC );
/* do not send anything if no colors were changed */
if( IsDCCurrentPalette( hDC ) && realized &&
!(COLOR_GetSystemPaletteFlags() & COLOR_VIRTUAL) )
{
/* Send palette change notification */
HWND hWnd;
if( (hWnd = WindowFromDC( hDC )) )
SendMessage16( HWND_BROADCAST, WM_PALETTECHANGED, hWnd, 0L);
}
return realized;
}
/**********************************************************************
* UpdateColors (GDI.366)
*
*/
int UpdateColors( HDC hDC )
{
HWND hWnd = WindowFromDC( 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 && !(COLOR_GetSystemPaletteFlags() & COLOR_VIRTUAL) )
InvalidateRect16( hWnd, NULL, FALSE );
return 0x666;
}
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