// vi:ft=cpp
/*
 * \brief   Titlebar interface
 * \date    2005-10-24
 * \author  Norman Feske <norman.feske@genode-labs.com>
 */

/*
 * Copyright (C) 2005-2009
 * Genode Labs, Feske & Helmuth Systementwicklung GbR
 *
 * This file is part of the Genode OS framework, which is distributed
 * under the terms of the GNU General Public License version 2.
 */

#pragma once

#include <l4/mag-gfx/geometry>
#include <l4/mag-gfx/canvas>

#include <l4/scout-gfx/icon>
#include <l4/scout-gfx/fonts>
#include <l4/scout-gfx/widget>
#include <l4/scout-gfx/factory>
#include <l4/scout-gfx/style>

#include <cstring>

namespace Scout_gfx {

/***************
 ** Title bar **
 ***************/
class Titlebar : public Parent_widget
{
private:
  Icon *_fg;
  const char *_txt;
  Mag_gfx::Area _txt_sz;
  int _txt_len;
  Mag_gfx::Font const *_font;

public:

  Area preferred_size() const { return _txt_sz + Area(32, 10); }
  Area min_size() const { return _txt_sz + Area(32, 10); }
  Area max_size() const { return Area(Area::Max_w, _txt_sz.h() + 10); }

  Orientations expanding() const { return Horizontal; }
  bool empty() const { return false; }

  void set_geometry(Rect const &r)
  {

    _pos = r.p1(); _size = r.area().min(max_size());
    if (_fg)
      _fg->set_geometry(Rect(Point(0,0), _size));
  }

  Rect geometry() const { return Rect(_pos, _size); }

  void text(const char *txt)
  {
    _txt     = txt ? txt : "Scout";
    _txt_sz  = Area(_font->str_w(_txt), _font->str_h(_txt));
    _txt_len = strlen(_txt);
  }

  /**
   * Constructor
   */
  explicit Titlebar(Factory *f, Mag_gfx::Font const *font)
  : _fg(f->create_icon()), _font(font)
  {
    _fg->alpha(255);
    _fg->findable(0);
    text(0);

    append(_fg);
  }

  /**
   * Define foreground of titlebar
   */
  void rgba(unsigned char *rgba)
  { _fg->rgba(rgba, Area(32, 32), 0, 0); };

  /**
   * Element interface
   */

  void draw(Mag_gfx::Canvas *c, Mag_gfx::Point const &p)
  {
    using Mag_gfx::Point;

    const int b = 180, a = 200;
    c->draw_box(Rect(_size) + p, Color(b, b, b, a));

    Point _txt_pos = p + Point(8, 0).max(Rect(_size).center(_txt_sz)) - Point(0, 1);
    c->draw_string(_txt_pos, _font, Color(0,0,0,200), _txt);
    Parent_widget::draw(c, p);
  }
};

}