Exemplo n.º 1
0
BOOL CClockST::GetBitmapAndPalette(UINT nIDResource, CBitmap& bitmap, CPalette& pal)
{
	HINSTANCE	hInstResource	= NULL;

	// Find correct resource handle
	hInstResource = AfxFindResourceHandle(MAKEINTRESOURCE(nIDResource), RT_BITMAP/*RT_GROUP_BITMAP*/);

	HBITMAP hBmp = (HBITMAP)::LoadImage( hInstResource, 
		MAKEINTRESOURCE(nIDResource), IMAGE_BITMAP, 0,0, LR_CREATEDIBSECTION);

	if (hBmp == NULL) return FALSE;

	bitmap.Attach(hBmp);

	// Create a logical palette for the bitmap
	DIBSECTION ds;
	BITMAPINFOHEADER &bmInfo = ds.dsBmih;
	bitmap.GetObject(sizeof(ds), &ds);

	int nColors = bmInfo.biClrUsed ? bmInfo.biClrUsed : 1 << bmInfo.biBitCount;

	// Create a halftone palette if colors > 256. 
	CClientDC dc(NULL); // Desktop DC

	if(nColors > 256)
		pal.CreateHalftonePalette(&dc);
	else
	{
		// Create the palette
		RGBQUAD *pRGB = new RGBQUAD[nColors];
		CDC memDC;
		memDC.CreateCompatibleDC(&dc);
		memDC.SelectObject( &bitmap );
		::GetDIBColorTable( memDC, 0, nColors, pRGB );
		UINT nSize = sizeof(LOGPALETTE) + (sizeof(PALETTEENTRY) * nColors);
		LOGPALETTE *pLP = (LOGPALETTE *) new BYTE[nSize];
		pLP->palVersion = 0x300;
		pLP->palNumEntries = nColors;
		for (int i=0; i < nColors; i++)
		{
			pLP->palPalEntry[i].peRed = pRGB[i].rgbRed;
			pLP->palPalEntry[i].peGreen = pRGB[i].rgbGreen;
			pLP->palPalEntry[i].peBlue = pRGB[i].rgbBlue;
			pLP->palPalEntry[i].peFlags = 0;
		}
		pal.CreatePalette( pLP );
		delete[] pLP;
		delete[] pRGB;
	}
	return TRUE;
} // End of GetBitmapAndPalette
Exemplo n.º 2
0
/////////////////////////////////////////////////////////////////////////////
//
// Create the palette.  Use halftone palette for hi-color bitmaps.
//
/////////////////////////////////////////////////////////////////////////////
zBOOL
ZDib::CreatePalette( CPalette& pal )
{
   // Should not already have palette
   ASSERT( pal.m_hObject == 0 );

   zBOOL bRC = FALSE;
   RGBQUAD *colors = new RGBQUAD[ MAXPALCOLORS ];
   UINT nColors = GetColorTable( colors, MAXPALCOLORS );
   if ( nColors > 0 )
   {
      // Allocate memory for logical palette.
      int nLth = sizeof( LOGPALETTE ) + sizeof( PALETTEENTRY ) * nColors;
      LOGPALETTE *pLogPal = (LOGPALETTE *) new char[ nLth ];
      if ( pLogPal == 0 )
         return( 0 );

      // Set version and number of palette entries.
      pLogPal->palVersion = PALVERSION;
      pLogPal->palNumEntries = nColors;

      // Copy color entries.
      for ( UINT k = 0; k < nColors; k++ )
      {
         pLogPal->palPalEntry[ k ].peRed   = colors[ k ].rgbRed;
         pLogPal->palPalEntry[ k ].peGreen = colors[ k ].rgbGreen;
         pLogPal->palPalEntry[ k ].peBlue  = colors[ k ].rgbBlue;
         pLogPal->palPalEntry[ k ].peFlags = 0;
      }

      // Create the palette and destroy LOGPAL.
      bRC = pal.CreatePalette( pLogPal );
      delete [] (zPCHAR) pLogPal;
   }
   else
   {
      CWindowDC dcScreen( 0 );
      bRC = pal.CreateHalftonePalette( &dcScreen );
   }

   delete [] colors;
   return( bRC );
}
//////////////////
// Create the palette. Use halftone palette for hi-color bitmaps.
//
BOOL CDib::CreatePalette(CPalette& pal)
{ 
	// should not already have palette
	ASSERT(pal.m_hObject==NULL);

	BOOL bRet = FALSE;
	RGBQUAD* colors = new RGBQUAD[MAXPALCOLORS];
	UINT nColors = GetColorTable(colors, MAXPALCOLORS);
	if (nColors > 0) {
		// Allocate memory for logical palette 
		int len = sizeof(LOGPALETTE) + sizeof(PALETTEENTRY) * nColors;
		LOGPALETTE* pLogPal = (LOGPALETTE*)new char[len];
		if (!pLogPal)
			return NULL;

		// set version and number of palette entries
		pLogPal->palVersion = PALVERSION;
		pLogPal->palNumEntries = nColors;

		// copy color entries 
		for (UINT i = 0; i < nColors; i++) {
			pLogPal->palPalEntry[i].peRed   = colors[i].rgbRed;
			pLogPal->palPalEntry[i].peGreen = colors[i].rgbGreen;
			pLogPal->palPalEntry[i].peBlue  = colors[i].rgbBlue;
			pLogPal->palPalEntry[i].peFlags = 0;
		}

		// create the palette and destroy LOGPAL
		bRet = pal.CreatePalette(pLogPal);
		delete [] (char*)pLogPal;
	} else {
		CWindowDC dcScreen(NULL);
		bRet = pal.CreateHalftonePalette(&dcScreen);
	}
	delete colors;
	return bRet;
}