/*
    Copyright (C) 2011-2013 Paul Davis
    Author: Carl Hetherington <cth@carlh.net>

    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation; either version 2 of the License, or
    (at your option) any later version.

    This program 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 General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with this program; if not, write to the Free Software
    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/

#ifndef __ardour_canvas_text_h__
#define __ardour_canvas_text_h__

#include <pangomm/fontdescription.h>
#include <pangomm/layout.h>

#include "canvas/visibility.h"
#include "canvas/item.h"

namespace ArdourCanvas {

class LIBCANVAS_API Text : public Item
{
public:
	Text (Canvas*);
	Text (Item*);
       ~Text();

	void render (Rect const &, Cairo::RefPtr<Cairo::Context>) const;
	void compute_bounding_box () const;

        ArdourCanvas::Color color () const { return _color; }
	void set_color (ArdourCanvas::Color);

	void set (std::string const &);
	void set_font_description (Pango::FontDescription);
	void set_alignment (Pango::Alignment);

        void clamp_width (double);

        double width() const;
        double height() const;

        void set_size_chars (int nchars);
        void dump (std::ostream&) const;

	std::string text() const { return _text; }
	double text_width() const;

private:
	std::string             _text;
        ArdourCanvas::Color     _color;
	Pango::FontDescription* _font_description;
	Pango::Alignment        _alignment;
        mutable Cairo::RefPtr<Cairo::ImageSurface> _image;
        mutable Duple          _origin;
        mutable double         _width;
        mutable double         _height;
        mutable bool           _need_redraw;
        mutable double         _width_correction;
        double                 _clamped_width;

        void _redraw () const;
};

}

#endif /* __ardour_canvas_text_h__ */