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

//

// Copyright (c) 2014, Industrial Light & Magic, a division of Lucas

// Digital Ltd. LLC

// 

// All rights reserved.

// 

// Redistribution and use in source and binary forms, with or without

// modification, are permitted provided that the following conditions are

// met:

// *       Redistributions of source code must retain the above copyright

// notice, this list of conditions and the following disclaimer.

// *       Redistributions in binary form must reproduce the above

// copyright notice, this list of conditions and the following disclaimer

// in the documentation and/or other materials provided with the

// distribution.

// *       Neither the name of Industrial Light & Magic nor the names of

// its contributors may be used to endorse or promote products derived

// from this software without specific prior written permission. 

// 

// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS

// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT

// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR

// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT

// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,

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

//----------------------------------------------------------------------------

//

//      class ImageLevel

//

//----------------------------------------------------------------------------

#include "ImfImageLevel.h"

#include <Iex.h>

#include <cassert>

using namespace IMATH_NAMESPACE;

using namespace IEX_NAMESPACE;

using namespace std;

OPENEXR_IMF_INTERNAL_NAMESPACE_SOURCE_ENTER

ImageLevel::ImageLevel

    (Image& image,

     int xLevelNumber,

     int yLevelNumber)

:

    _image (image),

    _xLevelNumber (xLevelNumber),

    _yLevelNumber (yLevelNumber),

    _dataWindow (Box2i (V2i (0, 0), V2i (-1, -1)))

{

    // empty

}

ImageLevel::~ImageLevel ()

{

    // empty

}

void			

ImageLevel::resize (const Imath::Box2i& dataWindow)

{

    if (dataWindow.max.x < dataWindow.min.x - 1||

        dataWindow.max.y < dataWindow.min.y - 1)

    {

        THROW (ArgExc,

               "Cannot reset data window for image level to "

               "(" << dataWindow.min.x << ", " << dataWindow.min.y << ") - "

               "(" << dataWindow.max.x << ", " << dataWindow.max.y << "). "

               "The new data window is invalid.");

    }

    _dataWindow = dataWindow;

}

void

ImageLevel::shiftPixels (int dx, int dy)

{

    _dataWindow.min.x += dx;

    _dataWindow.min.y += dy;

    _dataWindow.max.x += dx;

    _dataWindow.max.y += dy;

}

void

ImageLevel::throwChannelExists (const string& name) const

{

    THROW (ArgExc, "Cannot insert a new image channel with "

                   "name \"" << name << "\" into an image level. "

                   "A channel with the same name exists already.");

}

void

ImageLevel::throwBadChannelName (const string& name) const

{

    THROW (ArgExc, "Attempt to access non-existent "

                   "image channel \"" << name << "\".");

}

void

ImageLevel::throwBadChannelNameOrType (const string& name) const

{

    THROW (ArgExc, "Image channel \"" << name << "\" does not exist "

                   "or is not of the expected type.");

}

OPENEXR_IMF_INTERNAL_NAMESPACE_SOURCE_EXIT