xref: /aoo41x/main/basegfx/inc/basegfx/raster/bzpixelraster.hxx (revision ce9c7ef7)

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 *
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * 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
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
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 * Unless required by applicable law or agreed to in writing,
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#ifndef _BGFX_RASTER_BZPIXELRASTER_HXX
#define _BGFX_RASTER_BZPIXELRASTER_HXX

#include <basegfx/raster/bpixelraster.hxx>
#include <rtl/memory.h>

//////////////////////////////////////////////////////////////////////////////
// predeclarations

//////////////////////////////////////////////////////////////////////////////

namespace basegfx
{
	class BZPixelRaster : public BPixelRaster
	{
	protected:
		// additionally, host a ZBuffer
		sal_uInt16*					mpZBuffer;

	public:
		// reset
		void resetZ()
		{
			reset();
            rtl_zeroMemory(mpZBuffer, sizeof(sal_uInt16) * mnCount);
		}

		// constructor/destructor
		BZPixelRaster(sal_uInt32 nWidth, sal_uInt32 nHeight)
		:	BPixelRaster(nWidth, nHeight),
			mpZBuffer(new sal_uInt16[mnCount])
		{
            rtl_zeroMemory(mpZBuffer, sizeof(sal_uInt16) * mnCount);
		}

		~BZPixelRaster()
		{
			delete [] mpZBuffer;
		}

		// data access read only
		const sal_uInt16& getZ(sal_uInt32 nIndex) const
		{
#ifdef DBG_UTIL
			if(nIndex >= mnCount)
			{
				OSL_ENSURE(false, "getZ: Access out of range (!)");
				return mpZBuffer[0L];
			}
#endif
			return mpZBuffer[nIndex];
		}

		// data access read/write
		sal_uInt16& getZ(sal_uInt32 nIndex)
		{
#ifdef DBG_UTIL
			if(nIndex >= mnCount)
			{
				OSL_ENSURE(false, "getZ: Access out of range (!)");
				return mpZBuffer[0L];
			}
#endif
			return mpZBuffer[nIndex];
		}
	};
} // end of namespace basegfx

#endif /* _BGFX_RASTER_BZPIXELRASTER_HXX */