base-text-renderer.h

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/*

Copyright (C) 2016-2017 John W. Eaton
Copyright (C) 2009-2016 Michael Goffioul

This file is part of Octave.

Octave 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.

Octave 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 Octave; see the file COPYING.  If not, see
<http://www.gnu.org/licenses/>.

*/

#if ! defined (octave_base_text_renderer_h)
#define octave_base_text_renderer_h 1

#include "octave-config.h"

#include <list>
#include <string>

#include "dMatrix.h"
#include "uint8NDArray.h"

#include "text-renderer.h"
#include "txt-eng.h"

namespace octave
{
  class
  base_text_renderer : public text_processor
  {
  public:

    base_text_renderer (void) : text_processor () { }

    virtual ~base_text_renderer (void) { }

    virtual Matrix
    get_extent (text_element *elt, double rotation) = 0;

    virtual Matrix
    get_extent (const std::string& txt, double rotation,
                const caseless_str& interpreter) = 0;

    virtual void
    set_font (const std::string& name, const std::string& weight,
              const std::string& angle, double size) = 0;

    virtual void set_color (const Matrix& c) = 0;

    virtual void
    text_to_pixels (const std::string& txt, uint8NDArray& pxls,
                    Matrix& bbox, int halign, int valign, double rotation,
                    const caseless_str& interpreter,
                    bool handle_rotation) = 0;

    virtual void
    text_to_strlist (const std::string& txt,
                     std::list<text_renderer::string>& lst,
                     Matrix& box, int halign, int valign, double rotation,
                     const caseless_str& interpreter = "tex") = 0;

  private:

    // No copying!

    base_text_renderer (const base_text_renderer&);

    base_text_renderer& operator = (const base_text_renderer&);
  };
}

#endif