/* This file is an image processing operation for GEGL
*
* GEGL 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 3 of the License, or (at your option) any later version.
*
* GEGL 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 GEGL; if not, see <http://www.gnu.org/licenses/>.
*
* Copyright 2006, 2010 Øyvind Kolås <pippin@gimp.org>
*/
#include "config.h"
#include <glib/gi18n-lib.h>
#ifdef GEGL_CHANT_PROPERTIES
gegl_chant_double (opacity, _("Opacity"), -2.0, 2.0, 0.5, _("Opacity"))
gegl_chant_double_ui (x, _("X"), -G_MAXDOUBLE, G_MAXDOUBLE, 20.0, -20.0, 20.0, 1.0,
_("Horizontal shadow offset"))
gegl_chant_double_ui (y, _("Y"), -G_MAXDOUBLE, G_MAXDOUBLE, 20.0, -20.0, 20.0, 1.0,
_("Vertical shadow offset"))
gegl_chant_double_ui (radius, _("Radius"), 0.0, G_MAXDOUBLE, 10.0, 0.0, 300.0, 1.5,
_("Blur radius"))
#else
#define GEGL_CHANT_TYPE_META
#define GEGL_CHANT_C_FILE "dropshadow.c"
#include "gegl-chant.h"
/* in attach we hook into graph adding the needed nodes */
static void attach (GeglOperation *operation)
{
GeglNode *gegl = operation->node;
GeglNode *input, *output, *over, *translate, *opacity, *blur, *darken, *black;
GeglColor *black_color = gegl_color_new ("rgb(0.0,0.0,0.0)");
input = gegl_node_get_input_proxy (gegl, "input");
output = gegl_node_get_output_proxy (gegl, "output");
over = gegl_node_new_child (gegl, "operation", "gegl:over", NULL);
translate = gegl_node_new_child (gegl, "operation", "gegl:translate", NULL);
opacity = gegl_node_new_child (gegl, "operation", "gegl:opacity", NULL);
blur = gegl_node_new_child (gegl, "operation", "gegl:gaussian-blur", NULL);
darken = gegl_node_new_child (gegl, "operation", "gegl:src-in", NULL);
black = gegl_node_new_child (gegl, "operation", "gegl:color",
"value", black_color,
NULL);
g_object_unref (black_color);
gegl_node_link_many (input, darken, blur, opacity, translate, over, output, NULL);
gegl_node_connect_from (over, "aux", input, "output");
gegl_node_connect_from (darken, "aux", black, "output");
gegl_operation_meta_redirect (operation, "opacity", opacity, "value");
gegl_operation_meta_redirect (operation, "radius", blur, "std-dev-x");
gegl_operation_meta_redirect (operation, "radius", blur, "std-dev-y");
gegl_operation_meta_redirect (operation, "x", translate, "x");
gegl_operation_meta_redirect (operation, "y", translate, "y");
}
static void
gegl_chant_class_init (GeglChantClass *klass)
{
GeglOperationClass *operation_class;
operation_class = GEGL_OPERATION_CLASS (klass);
operation_class->attach = attach;
gegl_operation_class_set_keys (operation_class,
"name" , "gegl:dropshadow",
"categories" , "meta:effects",
"description",
_("Creates a dropshadow effect on the input buffer"),
NULL);
}
#endif