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 * 
 * Licensed to the Apache Software Foundation (ASF) under one
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 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 * 
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 * 
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#ifndef _SV_PNGREAD_HXX
#define _SV_PNGREAD_HXX

#include <vcl/dllapi.h>
#include <vcl/bitmapex.hxx>
#include <vector>

// -------------
// - PNGReader -
// -------------

namespace vcl
{
	class PNGReaderImpl;

	class VCL_DLLPUBLIC PNGReader
	{
		PNGReaderImpl*			mpImpl;

	public:

		/* the PNG chunks are read within the c'tor, so the stream will
		be positioned at the end of the PNG */
		explicit PNGReader( SvStream& rStm );
		~PNGReader();

        /* an empty preview size hint (=default) will read the whole image
        */
		BitmapEx						Read( const Size& i_rPreviewHint = Size() );

		// retrieve every chunk that resides inside the PNG
		struct ChunkData
		{
			sal_uInt32					nType;
			std::vector< sal_uInt8 >	aData;
		};
		const std::vector< ChunkData >&	GetChunks() const;

		void SetIgnoreGammaChunk( sal_Bool b );
	};
}

#endif // _SV_PNGREAD_HXX