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% mplibstuff.w
%
% Copyright 2017 LuaTeX team <bugs@@luatex.org>
%
% This file is part of LuaTeX.
%
% LuaTeX is free software; you can redistribute it and/or modify it under
% the terms of the GNU General Public License as published by the Free
% Software Foundation; either version 2 of the License, or (at your
% option) any later version.
%
% LuaTeX 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 Lesser General Public
% License for more details.
%
% You should have received a copy of the GNU General Public License along
% with LuaTeX; if not, see <http://www.gnu.org/licenses/>.
@ PNG and SVG backends are not available in \LuaTeX, because it's complex
to manage the math formulas at run time. In this respect |PostScript| and the highlevel |objects|
are better, and they are the standard way. Another problem is how to emit the warning:
the |normal\_warning| function is not available when \LuaTeX\ is called as LUA only.
@c
#include <stdio.h>
extern void normal_warning(const char *t, const char *p);
extern int lua_only;
#define mplibstuff_message(BACKEND) do { \
if (lua_only) { \
fprintf(stdout,"mplib: " #BACKEND " backend not available.\n"); \
} else { \
normal_warning("mplib", #BACKEND " backend not available."); \
} \
} while (0)
@ @c
void mp_png_backend_initialize (void *mp);
void mp_png_backend_free (void *mp);
int mp_png_gr_ship_out (void *hh, void *options, int standalone);
int mp_png_ship_out (void *hh, const char *options);
@ @c
void mp_svg_backend_initialize (void *mp);
void mp_svg_backend_free (void *mp);
int mp_svg_ship_out (void *hh, int prologues);
int mp_svg_gr_ship_out (void *hh, int qprologues, int standalone);
@ @c
void mp_png_backend_initialize (void *mp) {return; } /*{mplibstuff_message(1png);return;}*/
void mp_png_backend_free (void *mp) {return; } /*{mplibstuff_message(png);return;}*/
int mp_png_gr_ship_out (void *hh, void *options, int standalone) {mplibstuff_message(png);return 1;}
int mp_png_ship_out (void *hh, const char *options) {mplibstuff_message(png);return 1;}
@ @c
void mp_svg_backend_initialize (void *mp) {return;} /*{mplibstuff_message(svg);return;}*/
void mp_svg_backend_free (void *mp) {return;} /*{mplibstuff_message(svg);return;}*/
int mp_svg_ship_out (void *hh, int prologues) {mplibstuff_message(svg);return 1;}
int mp_svg_gr_ship_out (void *hh, int qprologues, int standalone) {mplibstuff_message(svg);return 1;}
@ @c
const char*
cairo_version_string (void);
const char*
pixman_version_string (void);
#define CAIRO_VERSION_STRING "CAIRO NOT AVAILABLE"
const char *COMPILED_CAIRO_VERSION_STRING = CAIRO_VERSION_STRING;
#define PIXMAN_VERSION_STRING "PIXMAN NOT AVAILABLE"
const char *COMPILED_PIXMAN_VERSION_STRING = PIXMAN_VERSION_STRING;
const char*
cairo_version_string (void)
{
return CAIRO_VERSION_STRING;
}
const char*
pixman_version_string (void)
{
return PIXMAN_VERSION_STRING;
}
@ @c
char png_libpng_ver[] = "PNG NOT AVAILABLE";
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