libraries/libtui/include/Png.h

/*
 * Copyright (c) 2008-2014, Pedigree Developers
 *
 * Please see the CONTRIB file in the root of the source tree for a full
 * list of contributors.
 *
 * Permission to use, copy, modify, and distribute this software for any
 * purpose with or without fee is hereby granted, provided that the above
 * copyright notice and this permission notice appear in all copies.
 *
 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 */

#ifndef TUI_PNG_H
#define TUI_PNG_H

#include "environment.h"
#include <png.h>
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>

class Png
{
  public:
    Png(const char *filename);
    ~Png();

    void render(rgb_t *pFb, size_t x, size_t y, size_t width, size_t height);

    size_t getWidth()
    {
        return m_nWidth;
    }

    size_t getHeight()
    {
        return m_nHeight;
    }

  private:
    Png(const Png &);
    Png &operator=(const Png &);

    uint32_t
    compileColour(uint8_t r, uint8_t g, uint8_t b, Display::PixelFormat pf);

    png_structp m_PngPtr;
    png_infop m_InfoPtr;
    size_t m_nWidth;
    size_t m_nHeight;

    uint8_t **m_pRowPointers;
};

#endif