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/* output-svg.h - output in SVG format
Copyright (C) 1999, 2000, 2001 Bernhard Herzog
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public License
as published by the Free Software Foundation; either version 2.1 of
the License, or (at your option) any later version.
This library 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 Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
USA. */
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif /* Def: HAVE_CONFIG_H */
#include "spline.h"
#include "color.h"
#include "output-svg.h"
static void
out_splines (FILE * file, spline_list_array_type shape, int height)
{
unsigned this_list;
spline_list_type list;
color_type last_color = {0,0,0};
for (this_list = 0; this_list < SPLINE_LIST_ARRAY_LENGTH (shape);
this_list++)
{
unsigned this_spline;
spline_type first;
list = SPLINE_LIST_ARRAY_ELT (shape, this_list);
first = SPLINE_LIST_ELT (list, 0);
if (this_list == 0 || !COLOR_EQUAL(list.color, last_color))
{
if (this_list > 0)
{
if (!(shape.centerline || list.open)) fputs("z", file);
fputs("\"/>\n", file);
}
fprintf(file, "<path style=\"%s:#%02x%02x%02x; %s:none;\" d=\"",
(shape.centerline || list.open) ? "stroke" : "fill",
list.color.r, list.color.g, list.color.b,
(shape.centerline || list.open) ? "fill" : "stroke");
}
fprintf(file, "M%g %g",
START_POINT(first).x, height - START_POINT(first).y);
for (this_spline = 0; this_spline < SPLINE_LIST_LENGTH (list);
this_spline++)
{
spline_type s = SPLINE_LIST_ELT (list, this_spline);
if (SPLINE_DEGREE(s) == LINEARTYPE)
{
fprintf(file, "L%g %g",
END_POINT(s).x, height - END_POINT(s).y);
}
else
{
fprintf(file, "C%g %g %g %g %g %g",
CONTROL1(s).x, height - CONTROL1(s).y,
CONTROL2(s).x, height - CONTROL2(s).y,
END_POINT(s).x, height - END_POINT(s).y);
}
last_color = list.color;
}
}
if (!(shape.centerline || list.open)) fputs("z", file);
if (SPLINE_LIST_ARRAY_LENGTH(shape) > 0)
fputs("\"/>\n", file);
}
int output_svg_writer(FILE* file, at_string name,
int llx, int lly, int urx, int ury,
at_output_opts_type * opts,
spline_list_array_type shape,
at_msg_func msg_func,
at_address msg_data)
{
int width = urx - llx;
int height = ury - lly;
fputs("<?xml version=\"1.0\" standalone=\"yes\"?>\n", file);
fprintf(file, "<svg width=\"%d\" height=\"%d\">\n", width, height);
out_splines(file, shape, height);
fputs("</svg>\n", file);
return 0;
}
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