/* Copyright (C) 2007 Michael Goffioul
**
** 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., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301
*/

#include "graphics-renderer.h"

class
lin_scaler : public base_scaler
{
public:
  Matrix scale (const Matrix& m)
    { return m; }
};

class
log_scaler : public base_scaler
{
public:
  Matrix scale (const Matrix& m)
  {
    Matrix retval (m.rows (), m.cols ());
    const double *d1 = m.fortran_vec ();
    double *d2 = retval.fortran_vec ();

    for (int i = 0; i < m.numel (); i++)
      d2[i] = log10 (d1[i]);

    return retval;
  }
};

scaler&
scaler::operator= (const radio_property& p)
{
  if (rep)
    {
      delete (rep);
      rep = 0;
    }

  if (p.current_value () == "log")
    rep = new log_scaler ();
  else
    rep = new lin_scaler ();

  return *this;
}

void
graphics_renderer::draw (const graphics_object& obj)
{
  if (obj.isa ("figure"))
    draw (reinterpret_cast<const figure::properties&> (obj.get_properties ()));
  else if (obj.isa ("axes"))
    draw (reinterpret_cast<const axes::properties&> (obj.get_properties ()));
}

void
graphics_renderer::set_viewport (int w, int h)
{
  width = w;
  height = h;
}

Matrix
graphics_renderer::get_boundingbox (const axes::properties& props) const
{
  Matrix bb (1, 4, 0.0);

  // TODO: use position, units and canvas size to compute actual bounding box
  bb(2) = get_width ();
  bb(3) = get_height ();

  return bb;
}