//  $Id: input_box.cpp 3144 2007-09-14 16:20:37Z grumbel $
//
//  Pingus - A free Lemmings clone
//  Copyright (C) 2006 Ingo Ruhnke <grumbel@gmx.de>
//
//  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., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.

#include <algorithm>
#include "input_box.hpp"
#include "../display/drawing_context.hpp"
#include "../math/vector2i.hpp"
#include "../fonts.hpp"

namespace GUI {
	
InputBox::InputBox(int width_, Vector2i p, const std::string& default_value,
                   bool locked, const std::string& label_) 
  :	str(default_value),
	pos(p),
	width(width_),
	height(Fonts::pingus_small.get_height()),
	is_locked(locked),
	label(label_)
{
}

void
InputBox::draw(DrawingContext &gc)
{
  // Draw the rectangle and border
  gc.draw_fillrect(pos.x, pos.y, pos.x + width, pos.y + height, 
                   Color(0,0,0));
  gc.draw_rect(pos.x, pos.y, pos.x + width, pos.y + height, Color(255,255,255));	

  // If there is text, draw it:
  if (str != std::string())
    gc.print_left(Fonts::pingus_small, pos.x + 10, pos.y, shrink_string(str));

  if (label != std::string())
    gc.print_right(Fonts::pingus_small, pos.x, pos.y, label);
     
  if (has_focus())
    gc.draw_line(pos.x + Fonts::pingus_small.get_size(shrink_string(str)).width + 12,
                 pos.y, pos.x + Fonts::pingus_small.get_size(shrink_string(str)).width + 12, 
                 pos.y + height,	Color(0,255,255));
}

bool
InputBox::is_at(int x, int y)
{
  return (x > pos.x && x < pos.x + width &&
          y > pos.y && y < pos.y + height);
}

std::string
InputBox::shrink_string(const std::string& s) const
{
  std::string ret_string;
  int w = (int)width / Fonts::pingus_small.get_width('W');
	
  if ((int)s.length() > w - 1)
    ret_string = s.substr(std::max(0, (int)s.length()-w), w - 1);
  else
    ret_string = s;
	
  return ret_string;
}

void
InputBox::on_key_pressed(const unsigned short c)
{
  if (!is_locked)
    {
      // Verify input and escape out bad characters
      if (c == 0x08) 	// backspace
        {
          str = str.substr(0, str.length()-1);
        }
      else if ((c > 0x2c && c < 0x3a)    // - . / 0-9
               || (c > 0x40 && c < 0x5b)        // capital letters
               || (c > 0x60 && c < 0x7b)        // lowercase letters
               || (c == 0x7e || c == 0x5f)      // ~ and _
               ||  c == 0x20)                   // space
        {
          str += (unsigned char)c;
        }
    }
}

} // namespace GUI

/* EOF */