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