doc_libdvi2bitmap/html/PNGBitmap_8h_source.html

/* This file is part of dvi2bitmap; see README for copyrights and licence */


#ifndef PNGBITMAP_HEADER_READ

#define PNGBITMAP_HEADER_READ 1


#include "BitmapImage.h"

#ifdef HAVE_CSTD_INCLUDE

#include <cstdio>

#else

#include <stdio.h>

#endif


#include <png.h>


class PNGBitmap : public BitmapImage {

 public:

    PNGBitmap (const int w, const int h, const int bpp=1);

    ~PNGBitmap ();

    void write (const string filename);

    string fileExtension () const { return "png"; }

    static const char *version_string (void) { return PNG_LIBPNG_VER_STRING; };


 private:

    static png_structp png_ptr_;

    static png_infop info_ptr_;

    static png_color* palettes_[];

    static png_byte* trans_[];

    static void png_error_fn (png_structp png_ptr,

                              png_const_charp error_msg);

    static void png_warning_fn (png_structp png_ptr,

                                png_const_charp warning_msg);

};


#endif /* #ifndef PNGBITMAP_HEADER_READ */