Utils.h

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/*  Copyright (C) 2001-2014 National Institute For Space Research (INPE) - Brazil.

    This file is part of the TerraLib - a Framework for building GIS enabled applications.

    TerraLib is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as published by
    the Free Software Foundation, either version 3 of the License,
    or (at your option) any later version.

    TerraLib is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
    GNU Lesser General Public License for more details.

    You should have received a copy of the GNU Lesser General Public License
    along with TerraLib. See COPYING. If not, write to
    TerraLib Team at <terralib-team@terralib.org>.
 */

/*!
  \file Utils.h
   
  \brief 

  \ingroup layout
*/

#ifndef __TERRALIB_LAYOUT_INTERNAL_UTILS_H 
#define __TERRALIB_LAYOUT_INTERNAL_UTILS_H

// TerraLib
#include "../../../geometry/Envelope.h"
#include "../../../geometry/LinearRing.h"
#include "../../../color/RGBAColor.h"
#include "../../../maptools/Canvas.h"
#include "../../../maptools/WorldDeviceTransformer.h"

namespace te
{
  namespace layout
  {
    class Utils
    {
      public:

        Utils();
        virtual ~Utils();
        virtual void drawRectW(te::gm::Envelope box);
        virtual void drawLineW(te::gm::LinearRing* line);
        virtual te::color::RGBAColor** getImageW(te::gm::Envelope boxmm);

        virtual int mm2pixel(double mm);

        virtual te::gm::LinearRing* createSimpleLine(te::gm::Envelope box);

        virtual te::gm::LinearRing* addCoordsInX(te::gm::Envelope box, double gap);

        virtual te::gm::LinearRing* addCoordsInY(te::gm::Envelope box, double gap);

        virtual void configCanvas(te::gm::Envelope box, bool resize = true);

        /* The calculation of the viewport is from the box in mm */
        virtual void configGeoCanvas(te::gm::Envelope boxgeo, te::gm::Envelope boxmm, bool resize = true);

        /* The calculation of the viewport is from the geographical box  */
        virtual void configGeoCanvasFromGeo(te::gm::Envelope boxgeo, te::gm::Envelope boxmm, bool resize = true);
        
        virtual te::gm::Envelope viewportBox(te::gm::Envelope box);

        virtual te::gm::Envelope viewportBoxFromGeo(te::gm::Envelope boxgeo, te::gm::Envelope boxmm);

        virtual void textBoundingBox(double &w, double &h, std::string txt);
        
      protected:

        virtual void changeCanvas(te::gm::Envelope viewport, te::gm::Envelope world, bool resize = true);

        virtual te::gm::Envelope transformToViewport(te::map::WorldDeviceTransformer transf, te::gm::Envelope box);

        virtual te::gm::Envelope viewportBoxFromMM(te::gm::Envelope box);
    };
  }
}

#endif // __TERRALIB_LAYOUT_INTERNAL_LAYOUT_UTILS_H