/*
**  jstest-gtk - A simple joystick test and calibration utility
**  Copyright (C) 2009 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 3 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, see <http://www.gnu.org/licenses/>.
*/

#include "rudder_widget.hpp"

RudderWidget::RudderWidget(int width, int height)
  : pos(0.0)
{
  set_size_request(width, height);
}

bool
RudderWidget::on_expose_event(GdkEventExpose* event)
{
  double p = (pos + 1.0)/2.0;
  if (0)
    {
      get_window()->draw_rectangle(get_style()->get_fg_gc(get_state()),
                                   true,
                                   (get_allocation().get_width() * p) - 4, 0,
                                   9, get_allocation().get_height()-1);
    }

  Glib::RefPtr<Gdk::Window> window = get_window();
  if(window)
    {
      Cairo::RefPtr<Cairo::Context> cr = window->create_cairo_context();
      
      int w  = get_allocation().get_width()-10;
      int h  = get_allocation().get_height()-10;

      cr->translate(5, 5);

      // Outer Rectangle
      cr->set_source_rgb(0.0, 0.0, 0.0);
      cr->set_line_width(1.0);
      cr->rectangle(0, 0, w, h);
      cr->stroke();

      cr->set_source_rgba(0.0, 0.0, 0.0, 0.5);
      cr->move_to(w/2, 0);
      cr->line_to(w/2, h);
      cr->stroke();

      cr->set_line_width(2.0);
      cr->set_source_rgb(0.0, 0.0, 0.0);
      cr->move_to(w * p, 0);
      cr->line_to(w * p, h);
      cr->stroke();
    }

  return true;
}

void
RudderWidget::set_pos(double p)
{
  pos = p;
  queue_draw();
}

/* EOF */
