Transforms.h

/* -*- mode: c++ -*- */
/*
 * \@copyright This File is part of the Board library which is
 * licensed under the terms of the GNU Lesser General Public Licence.
 * See the LICENCE file for further details.
 */
#ifndef _BOARD_TRANSFORMS_H_
#define _BOARD_TRANSFORMS_H_

#include <limits>
#include <vector>
#include <cmath>

namespace LibBoard {

struct Rect;
struct Shape;
struct ShapeList;

struct Transform {
public:
  inline Transform();
  virtual ~Transform() { };
  virtual double mapX( double x ) const;
  virtual double mapY( double y ) const = 0;
  virtual void apply( double & x, double & y ) const;
  virtual double scale( double x ) const;
  virtual double rounded( double x ) const;
  virtual void setBoundingBox( const Rect & rect,
             const double pageWidth,
             const double pageHeight,
             const double margin ) = 0;

  static inline double round( const double & x );

protected:
  double _scale;
  double _deltaX;
  double _deltaY;
  double _height;
};

struct TransformEPS : public Transform {
public:
  double mapY( double y ) const;
  void setBoundingBox( const Rect & rect,
           const double pageWidth,
           const double pageHeight,
           const double margin );
};

struct TransformFIG : public Transform {
public:
  inline TransformFIG();
  double rounded( double x ) const;
  double mapY( double y ) const;
  int mapWidth( double width ) const; 
  void setBoundingBox( const Rect & rect,
           const double pageWidth,
           const double pageHeight,
           const double margin );
  void setDepthRange( const ShapeList & shapes );
  int mapDepth( int depth ) const;
private:
  int _maxDepth;
  int _minDepth;
};

struct TransformSVG : public Transform {
public:
  double rounded( double x ) const;
  double mapY( double y ) const;
  double mapWidth( double width ) const; 
  void setBoundingBox( const Rect & rect,
           const double pageWidth,
           const double pageHeight,
           const double margin );
};

#ifdef WITH_CAIRO

struct TransformCairo : public Transform {
public:
  double rounded( double x ) const;
  double mapY( double y ) const;
  double mapWidth( double width ) const; 
  void setBoundingBox( const Rect & rect,
           const double pageWidth,
           const double pageHeight,
           const double margin );
};
#endif

struct TransformTikZ : public TransformSVG {
};

#include "Transforms.ih"

} // namespace LibBoard

#endif /* _TRANSFORMS_H_ */