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/* compute-svg-viewbox.c
* Copyright (C) 2016 Jehan
*
* This program 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 3 of the License, or
* (at your option) any later version.
*
* This program 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <https://www.gnu.org/licenses/>.
*/
#include <librsvg/rsvg.h>
#include <stdio.h>
#include <stdlib.h>
int main (int argc, char **argv)
{
RsvgHandle *handle;
RsvgRectangle viewport = { 0.0, 0.0, 16.0, 16.0 };
RsvgRectangle out_ink_rect;
RsvgRectangle out_logical_rect;
gchar *endptr;
gchar *path;
gchar *id;
gint prev_x;
gint prev_y;
if (argc != 5)
{
fprintf (stderr, "Usage: compute-svg-viewbox path object_id x y\n");
return 1;
}
prev_x = strtol (argv[3], &endptr, 10);
if (endptr == argv[3])
{
fprintf (stderr, "Error: the third parameter must be an integer\n");
return 1;
}
prev_y = strtol (argv[4], &endptr, 10);
if (endptr == argv[4])
{
fprintf (stderr, "Error: the fourth parameter must be an integer\n");
return 1;
}
path = argv[1];
handle = rsvg_handle_new_from_file (path, NULL);
if (! handle)
{
fprintf (stderr, "Error: wrong path \"%s\".\n", path);
return 1;
}
id = g_strdup_printf ("#%s", argv[2]);
if (! rsvg_handle_has_sub (handle, id))
{
fprintf (stderr, "Error: the id \"%s\" does not exist.\n", id);
g_object_unref (handle);
g_free (id);
return 1;
}
rsvg_handle_get_geometry_for_layer (handle, id, &viewport, &out_ink_rect, &out_logical_rect, NULL);
if (out_ink_rect.width != out_ink_rect.height)
{
/* Right now, we are constraining all objects into square objects. */
fprintf (stderr, "WARNING: object \"%s\" has unexpected size %fx%f [pos: (%f, %f)].\n",
id, out_ink_rect.width, out_ink_rect.height,
out_ink_rect.x, out_ink_rect.y);
}
printf ("viewBox=\"%f %f %f %f\"",
out_ink_rect.x + prev_x, out_ink_rect.y + prev_y,
out_ink_rect.width, out_ink_rect.height);
g_object_unref (handle);
g_free (id);
return 0;
}
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