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ImageView.h

///////////////////////////////////////////////////////////////////////////
//
// Copyright (c) 2004, 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
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// 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
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///////////////////////////////////////////////////////////////////////////


#ifndef INCLUDED_IMAGE_VIEW_H
#define INCLUDED_IMAGE_VIEW_H

//----------------------------------------------------------------------------
//
//    class ImageView -- draws an Imf::Rgba image in an OpenGl window
//
//----------------------------------------------------------------------------

#include <FL/Fl_Gl_Window.H>
#include <ImfRgba.h>
#include <ImfArray.h>


class ImageView: public Fl_Gl_Window
{
  public:

    ImageView (int x, int y,
             int w, int h,            // display window width and height
             const char label[],
             const Imf::Rgba pixels[/* w*h */],
             int dw, int dh,        // data window width and height
             int dx, int dy,        // data window offset
             float exposure,
             float defog,
             float kneeLow,
             float kneeHigh);

    virtual void        setExposure (float exposure);
    virtual void  setDefog (float defog);
    virtual void  setKneeLow (float low);
    virtual void  setKneeHigh (float high);
    
    virtual void  draw();

 protected:

    virtual void        updateScreenPixels ();
    void          computeFogColor ();

    float         _exposure;
    float         _defog;
    float         _kneeLow;
    float         _kneeHigh;
    const Imf::Rgba *   _rawPixels;
    float         _fogR;
    float         _fogG;
    float         _fogB;
    int                 _dw;
    int                 _dh;
    int                 _dx;
    int                 _dy;

 private:

    Imf::Array<unsigned char> _screenPixels;
};


#endif

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