text_layout.h

// text_layout.h                     -*-c++-*-
//
//   Copyright (C) 2004-2005, 2007 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 dispatch_mouse(short id, int x, int y, int z, mmask_t bstate);
 
      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