lib/image/format.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_FORMAT_H
#define LIB_IMAGE_FORMAT_H

#include <lib/image.h>

class image_format:
    public image
{
public:
    virtual ~image_format();

protected:
    // See base class for documentation.
    void get_pixel(int x, int y, icon_pixel &value) const;

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

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

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

    typedef unsigned char data_t;

    const data_t *get_data() const;

    const data_t *
    get_data(int y)
        const
    {
        return (data + 4 * width * y);
    }

    const data_t *
    get_data(int x, int y)
        const
    {
        return (data + 4 * (width * y + x));
    }

    virtual void save_to_file(const std::string &filename) const;

    image_format(int width, int height, data_t *data);

    image_format(int width, int height);

private:
    unsigned width;
    unsigned height;
    data_t *data;

    image_format();

    image_format(const image_format &);

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

#endif // LIB_IMAGE_FORMAT_H