lib/image/threshold.h

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//
// canola - canon canola 1614p emulator
// Copyright (C) 2011 Peter Miller
//
// This program is free software; you can redistribute it and/or modify
// it under the terms of the GNU General Public License, version 3, as
// published by the Free Software Foundation.
//
// 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/>.
//

#ifndef LIB_IMAGE_THRESHOLD_H
#define LIB_IMAGE_THRESHOLD_H

#include <lib/image.h>

class image_threshold:
    public image
{
public:
    typedef boost::shared_ptr<image_threshold> pointer;

    virtual ~image_threshold();

    static pointer create(const image::pointer &deeper, double level);

protected:
    // See base class for documentation.
    const char *type_name(void) const;

    // See base class for documentation.
    void get_pixel(int, int, icon_pixel&) const;

    // See base class for documentation.
    void set_pixel(int, int, const icon_pixel &);

    // See base class for documentation.
    unsigned int get_width(void) const;

    // See base class for documentation.
    unsigned int get_height(void) const;

    // See base class for documentation.
    void save_to_file(const std::string &) const;

private:
    image_threshold(const image::pointer &deeper, double level);

    image::pointer deeper;

    double level;

    image_threshold();

    image_threshold(const image_threshold &rhs);

    image_threshold &operator=(const image_threshold &rhs);
};

#endif // LIB_IMAGE_THRESHOLD_H