PIKApp/tools/colorsvg2png.c

89 lines
2.3 KiB
C

/* colorsvg2png.c
* Copyright (C) 2018 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 <glib/gprintf.h>
#include <librsvg/rsvg.h>
int
main (int argc, char **argv)
{
GError *error = NULL;
RsvgHandle *handle;
cairo_surface_t *surface;
cairo_t *cr;
RsvgRectangle target_rect;
gchar *input;
gchar *output;
gint dim;
gint retval = 0;
if (argc != 4)
{
g_fprintf (stderr, "Usage: colorsvg2png svg-image png-output size\n");
return 1;
}
input = argv[1];
output = argv[2];
dim = (gint) g_ascii_strtoull (argv[3], NULL, 10);
if (dim < 1)
{
g_fprintf (stderr, "Usage: invalid dimension %d\n", dim);
return 1;
}
handle = rsvg_handle_new_from_file (input, &error);
if (! handle)
{
g_fprintf (stderr,
"Error: failed to load '%s' as SVG: %s\n",
input, error->message);
g_error_free (error);
return 1;
}
surface = cairo_image_surface_create (CAIRO_FORMAT_ARGB32, dim, dim);
cr = cairo_create (surface);
target_rect.x = target_rect.y = 0;
target_rect.width = target_rect.height = dim;
if (! rsvg_handle_render_document (handle, cr, &target_rect, NULL))
{
g_fprintf (stderr,
"Error: failed to render '%s'\n",
input);
retval = 1;
}
if (retval == 0 &&
cairo_surface_write_to_png (surface, output) != CAIRO_STATUS_SUCCESS)
{
g_fprintf (stderr,
"Error: failed to write '%s'\n",
output);
retval = 1;
}
cairo_surface_destroy (surface);
cairo_destroy (cr);
g_object_unref (handle);
return retval;
}