87 lines
2.5 KiB
C
87 lines
2.5 KiB
C
/* compute-svg-viewbox.c
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* Copyright (C) 2016 Jehan
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <https://www.gnu.org/licenses/>.
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*/
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#include <librsvg/rsvg.h>
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#include <stdio.h>
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#include <stdlib.h>
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int main (int argc, char **argv)
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{
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RsvgHandle *handle;
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RsvgRectangle viewport = { 0.0, 0.0, 16.0, 16.0 };
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RsvgRectangle out_ink_rect;
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RsvgRectangle out_logical_rect;
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gchar *endptr;
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gchar *path;
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gchar *id;
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gint prev_x;
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gint prev_y;
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if (argc != 5)
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{
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fprintf (stderr, "Usage: compute-svg-viewbox path object_id x y\n");
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return 1;
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}
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prev_x = strtol (argv[3], &endptr, 10);
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if (endptr == argv[3])
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{
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fprintf (stderr, "Error: the third parameter must be an integer\n");
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return 1;
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}
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prev_y = strtol (argv[4], &endptr, 10);
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if (endptr == argv[4])
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{
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fprintf (stderr, "Error: the fourth parameter must be an integer\n");
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return 1;
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}
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path = argv[1];
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handle = rsvg_handle_new_from_file (path, NULL);
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if (! handle)
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{
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fprintf (stderr, "Error: wrong path \"%s\".\n", path);
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return 1;
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}
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id = g_strdup_printf ("#%s", argv[2]);
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if (! rsvg_handle_has_sub (handle, id))
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{
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fprintf (stderr, "Error: the id \"%s\" does not exist.\n", id);
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g_object_unref (handle);
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g_free (id);
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return 1;
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}
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rsvg_handle_get_geometry_for_layer (handle, id, &viewport, &out_ink_rect, &out_logical_rect, NULL);
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if (out_ink_rect.width != out_ink_rect.height)
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{
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/* Right now, we are constraining all objects into square objects. */
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fprintf (stderr, "WARNING: object \"%s\" has unexpected size %fx%f [pos: (%f, %f)].\n",
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id, out_ink_rect.width, out_ink_rect.height,
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out_ink_rect.x, out_ink_rect.y);
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}
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printf ("viewBox=\"%f %f %f %f\"",
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out_ink_rect.x + prev_x, out_ink_rect.y + prev_y,
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out_ink_rect.width, out_ink_rect.height);
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g_object_unref (handle);
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g_free (id);
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return 0;
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}
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