// -*- related-file-name: "../../libefont/t1bounds.cc" -*-
#ifndef EFONT_T1BOUNDS_HH
#define EFONT_T1BOUNDS_HH
#include <efont/t1interp.hh>
#include <lcdf/transform.hh>
namespace Efont {

class CharstringBounds : public CharstringInterp { public:

    CharstringBounds();
    CharstringBounds(const Transform&);
    CharstringBounds(const Transform&, const Vector<double>& weight_vec);
    ~CharstringBounds()				{ }

    const Point& width() const			{ return _width; }
    double x_width() const			{ return _width.x; }
    bool bb_known() const			{ return KNOWN(_lb.x); }
    double bb_left() const			{ return _lb.x; }
    double bb_top() const			{ return _rt.y; }
    double bb_right() const			{ return _rt.x; }
    double bb_bottom() const			{ return _lb.y; }
    const Point& bb_bottom_left() const		{ return _lb; }
    const Point& bb_top_right() const		{ return _rt; }

    void act_width(int, const Point&);
    void act_line(int, const Point&, const Point&);
    void act_curve(int, const Point&, const Point&, const Point&, const Point&);
    inline void mark(const Point&);

    void clear();
    bool char_bounds(const CharstringContext&, bool shift = true);
    void translate(double dx, double dy);
    inline Point transform(const Point &) const;
    bool output(int bb[4], int& width, bool use_cur_width = false) const;

    static bool bounds(const CharstringContext&, int bounds[4], int& width);
    static bool bounds(const Transform&, const CharstringContext&, int bounds[4], int& width);
        
  private:

    Point _lb;
    Point _rt;
    Point _width;
    Transform _xf;
    Transform _nonfont_xf;
    const CharstringProgram* _last_xf_program;

    void set_xf(const CharstringProgram*);
    
    inline void xf_mark(const Point&);
    void xf_mark(const Bezier&);

    inline bool xf_inside(const Point&) const;
    inline bool xf_controls_inside(const Bezier&) const;
    
};

inline void CharstringBounds::xf_mark(const Point& p)
{
    if (!KNOWN(_lb.x))
	_lb = _rt = p;
    if (p.x < _lb.x)
	_lb.x = p.x;
    else if (p.x > _rt.x)
	_rt.x = p.x;
    if (p.y < _lb.y)
	_lb.y = p.y;
    else if (p.y > _rt.y)
	_rt.y = p.y;
}

inline void CharstringBounds::mark(const Point& p)
{
    xf_mark(p * _xf);
}

inline bool CharstringBounds::xf_inside(const Point& p) const
{
    return p.x >= _lb.x && p.x <= _rt.x && p.y >= _lb.y && p.y <= _rt.y;
}

inline bool CharstringBounds::xf_controls_inside(const Bezier& b) const
{
    return xf_inside(b.point(1)) && xf_inside(b.point(2));
}

inline Point CharstringBounds::transform(const Point& p) const
{
    return p * _xf;
}

}
#endif
