BOOL CDib::SetPalette( CPalette& palette )
{
if( IsIndexed() )
{
int iColors = 0;
if (!palette.GetObject(sizeof(iColors), &iColors))
{
TRACE("Failed to get num palette colors");
return FALSE;
}
ASSERT(iColors>= 0 && iColors<=256);
// iColors = min(iColors, GetColorTableEntries());
PALETTEENTRY pe[256];
palette.GetPaletteEntries(0, iColors, pe);
RGBQUAD quad[256] = {0};
for (int i = 0; i < iColors; i++)
{
quad[i].rgbRed = pe[i].peRed;
quad[i].rgbGreen = pe[i].peGreen;
quad[i].rgbBlue = pe[i].peBlue;
}
SetColorTable(0, iColors, &(quad[0]));
//update copy of the palette
//GetPalette(m_palette);
}
return TRUE;
}
static int MergePalette( CDC *pDC, LPRGBQUAD pC, int nColors )
{
WORD nOldEntries, nNewEntries;
COLORREF rgb;
int idx, i;
CPalette* pPal = pDC->GetCurrentPalette();
pPal->GetObject( sizeof( nOldEntries ), &nOldEntries );
LPLOGPALETTE lp = (LPLOGPALETTE) new BYTE[ sizeof( LOGPALETTE ) + ( nOldEntries + nColors ) * sizeof ( PALETTEENTRY ) ];
LPPALETTEENTRY pe = lp->palPalEntry;
if( pPal->GetPaletteEntries( 0, nOldEntries, pe ) )
pe += nOldEntries;
for( i = 0, nNewEntries = 0; i < nColors; i++ ) {
rgb = RGB(pC->rgbRed,pC->rgbGreen,pC->rgbBlue);
idx = pPal->GetNearestPaletteIndex( rgb );
pPal->GetPaletteEntries( idx, 1, pe );
if( ( pe->peRed != GetRValue( rgb ) )
|| pe->peGreen != GetGValue( rgb )
|| pe->peBlue != GetBValue( rgb ) )
{
pe->peRed = GetRValue( rgb );
pe->peGreen = GetGValue( rgb );
pe->peBlue = GetBValue( rgb );
pe->peFlags = NULL;
pe++;
nNewEntries++;
}
pC++;
}
if( nNewEntries > 0 ) {
lp->palVersion = PALVERSION;
lp->palNumEntries = nOldEntries + nNewEntries;
CPalette pal, *pOldPal;
pal.CreatePalette( lp );
pOldPal = pDC->SelectPalette( &pal, FALSE );
pDC->RealizePalette();
}
delete lp;
return (int) nNewEntries;
}
