text_layout.h

// text_layout.h                     -*-c++-*-
//
//   Copyright (C) 2004-2005 Daniel Burrows
//
//   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; see the file COPYING.  If not, write to
//   the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
//   Boston, MA 02111-1307, USA.


#ifndef TEXT_LAYOUT_H
#define TEXT_LAYOUT_H

#include "widget.h"
#include <cwidget/fragment_contents.h>

namespace cwidget
{
  class fragment;

  namespace widgets
  {
    class text_layout : public widget
    {
    protected:
      text_layout();
      text_layout(fragment *f);
    public:
      static util::ref_ptr<text_layout> create()
      {
        util::ref_ptr<text_layout> rval(new text_layout);
        rval->decref();
        return rval;
      }

      static util::ref_ptr<text_layout> create(fragment *f)
      {
        util::ref_ptr<text_layout> rval(new text_layout(f));
        rval->decref();
        return rval;
      }

      bool handle_key(const config::key &k);

      void set_fragment(fragment *f);

      void append_fragment(fragment *f);

      int width_request();

      int height_request(int w);

      bool get_cursorvisible();

      point get_cursorloc();

      bool focus_me();

      void paint(const style &st);

      void line_down();

      void line_up();

      void move_to_top();

      void move_to_bottom();

      void page_down();

      void page_up();

      void search_for(const std::wstring &s,
                      bool search_forwards);

      void scroll(bool dir);

      ~text_layout();

      sigc::signal2<void, int, int> location_changed;

      static config::keybindings *bindings;

      static void init_bindings();
    private:
      void set_start(unsigned int new_start);

      void freshen_contents(const style &st);

      void layout_me();

      void do_signal();

      size_t start;

      fragment *f;

      fragment_contents contents;

      bool stale;

      int lastw;

      style lastst;
    };

    typedef util::ref_ptr<text_layout> text_layout_ref;
  }
}

#endif

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