Application: gvSIG desktop

/* $Id: lti_watermarkFilter.h 3539 2006-01-09 12:23:20Z nacho $ */

/* //////////////////////////////////////////////////////////////////////////

//                                                                         //

// This code is Copyright (c) 2004 LizardTech, Inc, 1008 Western Avenue,   //

// Suite 200, Seattle, WA 98104.  Unauthorized use or distribution         //

// prohibited.  Access to and use of this code is permitted only under     //

// license from LizardTech, Inc.  Portions of the code are protected by    //

// US and foreign patents and other filings. All Rights Reserved.          //

//                                                                         //

////////////////////////////////////////////////////////////////////////// */

/* PUBLIC */

#ifndef LTI_WATERMARKFILTER_H

#define LTI_WATERMARKFILTER_H

// lt_lib_mrsid_core

#include "lti_imageFilter.h"

LT_BEGIN_NAMESPACE(LizardTech)

#if defined(LT_COMPILER_MS)

   #pragma warning(push,4)

#endif

class LTIEmbeddedImage;

/**

 * insert a watermark image onto an image

 *

 * Inserts a watermark image onto the current image stage.

 */

class LTIWatermarkFilter : public LTIImageFilter

{

public:

   /**

    * constructor

    *

    * Creates an image stage with the \a watermarkImage overlaid over the \a

    * sourceImage at the position specified.

    *

    * The \a edgePadding argument is used to specify the distance (in pixels)

    * between the watermark and the edge of the base image specified by the \a

    * position argument.  (This argument is ignored if LTI_POSITION_CENTER is

    * used.)

    *

    * @param  sourceImage     the base image

    * @param  watermarkImage  the watermark to be overlaid

    * @param  position        where to insert the watermark

    * @param  edgePadding     distance (in pixels) between the watermark and

    *                         the base image

    * @param  takeOwnershipWM  set to true to have the filter delete the \a watermarkImage

    * @param  takeOwnership   set to true to have the filter delete the \a sourceImage

    */

   LTIWatermarkFilter(LTIImageStage* sourceImage,

                      LTIImageStage* watermarkImage,

                      LTIPosition position,

                      lt_uint32 edgePadding,

                      bool takeOwnershipWM,

                      bool takeOwnership);

   /**

    * destructor

    */

   virtual ~LTIWatermarkFilter();

   virtual LT_STATUS initialize();

protected:

   LT_STATUS decodeBegin(const LTIScene& scene);

   LT_STATUS decodeEnd();

   LT_STATUS decodeStrip(LTISceneBuffer& stripBuffer, const LTIScene& stripScene);

private:

   typedef LTIImageFilter Super;

   LT_STATUS checkImpedance() const;

   LTIImageStage* m_rawWatermark;

   LTIEmbeddedImage* m_embeddedWatermark;

   lt_uint32 m_edgePadding;

   LTIPosition m_position;

   bool m_takeOwnershipWM;

   // nope

   LTIWatermarkFilter(const LTIWatermarkFilter&);

   LTIWatermarkFilter& operator=(const LTIWatermarkFilter&);

};

LT_END_NAMESPACE(LizardTech)

#if defined(LT_COMPILER_MS)

        #pragma warning(pop)

#endif

#endif // LTI_WATERMARKFILTER_H