VGImage.hpp

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#pragma ident "$Id: VGImage.hpp 1644 2009-01-27 19:26:14Z ckiesch $"


//============================================================================
//
//  This file is part of GPSTk, the GPS Toolkit.
//
//  The GPSTk 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 2.1 of the License, or
//  any later version.
//
//  The GPSTk 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 GPSTk; if not, write to the Free Software Foundation,
//  Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
//  
//  Copyright 2004, The University of Texas at Austin
//
//============================================================================


#ifndef VDRAW_VGIMAGE_H
#define VDRAW_VGIMAGE_H

#include <string>
#include <stdarg.h>

#include "Canvas.hpp"
#include "VDrawException.hpp"

namespace vdraw
{

  class VGImage : public Canvas
  {
    public:

    static const double PTS_PER_INCH;

    static const double PTS_PER_CM;

    static const double US_LETTER_WIDTH_PTS;
    static const double US_LETTER_HEIGHT_PTS;

    // For the rest of the world... there's ISO 216-series sizes
    static const double A3_WIDTH_PTS;
    static const double A3_HEIGHT_PTS;

    // A4 and US customary letter are of comparable size
    static const double A4_WIDTH_PTS;
    static const double A4_HEIGHT_PTS;

    static const double A5_WIDTH_PTS;
    static const double A5_HEIGHT_PTS;

    enum ORIGIN_LOCATION { 
      LOWER_LEFT, 
      UPPER_LEFT 
    };

    VGImage(double width=US_LETTER_WIDTH_PTS, 
        double height=US_LETTER_HEIGHT_PTS,
        ORIGIN_LOCATION iloc=LOWER_LEFT): 
      Canvas(),
      canvasWidth(width), 
      canvasHeight(height),
      footerHasBeenWritten(false), 
      ll(iloc==LOWER_LEFT)
    { 
      //std::cout << height << " " << canvasHeight << "\n";
    }

    virtual ~VGImage() {}   

    inline double getWidth(void) const 
    {
      return canvasWidth;
    }

    inline double getHeight(void) const
    {
      return canvasHeight;
    }

    bool isLL() { return ll; }

    virtual void view(void) throw (VDrawException)
    { throw VDrawException("No appropriate viewer has been defined.");}

    protected:

    void rectangles(const Bitmap &bitmap);

    enum StyleType {
      NONE,
      CLEAR,
      DEFAULT, 
      SHAPE
    };

    StyleType getCorrectMarker(Marker *m, const Markable& mark);

    StyleType getCorrectStrokeStyle(StrokeStyle *s, const BasicShape& shape);

    StyleType getCorrectFillColor(Color *c, const Fillable& shape);

    StyleType getCorrectTextStyle(TextStyle *s, const Text& text);

    virtual void outputFooter(void) {}

    double canvasWidth;  

    double canvasHeight;

    bool footerHasBeenWritten;

    bool ll; 

    private:


  }; // class VGImage


} // namespace vdraw

#endif //VDRAW_VGIMAGE_H

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