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PNGBitmap.h
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1 /* This file is part of dvi2bitmap; see README for copyrights and licence */
2
3 #ifndef PNGBITMAP_HEADER_READ
4 #define PNGBITMAP_HEADER_READ 1
5
6 #include "BitmapImage.h"
7 #ifdef HAVE_CSTD_INCLUDE
8 #include <cstdio>
9 #else
10 #include <stdio.h>
11 #endif
12
13 #include <png.h>
14
15 class PNGBitmap : public BitmapImage {
16 public:
17 PNGBitmap (const int w, const int h, const int bpp=1);
18 ~PNGBitmap ();
19 void write (const string filename);
20 string fileExtension () const { return "png"; }
21 static const char *version_string (void) { return PNG_LIBPNG_VER_STRING; };
22
23 private:
24 static png_structp png_ptr_;
25 static png_infop info_ptr_;
26 static png_color* palettes_[];
27 static png_byte* trans_[];
28 static void png_error_fn (png_structp png_ptr,
29 png_const_charp error_msg);
30 static void png_warning_fn (png_structp png_ptr,
31 png_const_charp warning_msg);
32 };
33
34
35 #endif /* #ifndef PNGBITMAP_HEADER_READ */