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gimp/app/gegl/gimp-gegl-nodes.c

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/* GIMP - The GNU Image Manipulation Program
* Copyright (C) 1995 Spencer Kimball and Peter Mattis
*
* gimp-gegl-nodes.h
* Copyright (C) 2012 Michael Natterer <mitch@gimp.org>
*
* 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 <http://www.gnu.org/licenses/>.
*/
#include "config.h"
#include <gegl.h>
#include "gimp-gegl-types.h"
#include "gimp-gegl-nodes.h"
#include "gimp-gegl-utils.h"
GeglNode *
gimp_gegl_create_flatten_node (const GimpRGB *background)
{
GeglNode *node;
GeglNode *input;
GeglNode *output;
GeglNode *color;
GeglNode *over;
GeglColor *c;
g_return_val_if_fail (background != NULL, NULL);
node = gegl_node_new ();
input = gegl_node_get_input_proxy (node, "input");
output = gegl_node_get_output_proxy (node, "output");
c = gimp_gegl_color_new (background);
color = gegl_node_new_child (node,
"operation", "gegl:color",
"value", c,
NULL);
g_object_unref (c);
over = gegl_node_new_child (node,
"operation", "gegl:over",
NULL);
gegl_node_connect_to (input, "output",
over, "aux");
gegl_node_connect_to (color, "output",
over, "input");
gegl_node_connect_to (over, "output",
output, "input");
return node;
}
GeglNode *
gimp_gegl_create_apply_opacity_node (GeglBuffer *mask,
gint mask_offset_x,
gint mask_offset_y,
gdouble opacity)
{
GeglNode *node;
GeglNode *input;
GeglNode *output;
GeglNode *opacity_node;
GeglNode *mask_source;
g_return_val_if_fail (GEGL_IS_BUFFER (mask), NULL);
node = gegl_node_new ();
input = gegl_node_get_input_proxy (node, "input");
output = gegl_node_get_output_proxy (node, "output");
opacity_node = gegl_node_new_child (node,
"operation", "gegl:opacity",
"value", opacity,
NULL);
mask_source = gimp_gegl_add_buffer_source (node, mask,
mask_offset_x,
mask_offset_y);
gegl_node_connect_to (input, "output",
opacity_node, "input");
gegl_node_connect_to (mask_source, "output",
opacity_node, "aux");
gegl_node_connect_to (opacity_node, "output",
output, "input");
return node;
}
GeglNode *
gimp_gegl_create_apply_buffer_node (GeglBuffer *buffer,
gint buffer_offset_x,
gint buffer_offset_y,
gint src_offset_x,
gint src_offset_y,
gint dest_offset_x,
gint dest_offset_y,
GeglBuffer *mask,
gint mask_offset_x,
gint mask_offset_y,
gdouble opacity,
GimpLayerModeEffects mode,
GimpComponentMask affect)
{
GeglNode *node;
GeglNode *input;
GeglNode *output;
GeglNode *buffer_source;
GeglNode *mask_source;
GeglNode *mode_node;
g_return_val_if_fail (GEGL_IS_BUFFER (buffer), NULL);
g_return_val_if_fail (mask == NULL || GEGL_IS_BUFFER (mask), NULL);
node = gegl_node_new ();
input = gegl_node_get_input_proxy (node, "input");
if (src_offset_x != 0 || src_offset_y != 0)
{
GeglNode *translate =
gegl_node_new_child (node,
"operation", "gegl:translate",
"x", (gdouble) src_offset_x,
"y", (gdouble) src_offset_y,
NULL);
gegl_node_connect_to (input, "output",
translate, "input");
input = translate;
}
output = gegl_node_get_output_proxy (node, "output");
if (dest_offset_x != 0 || dest_offset_y != 0)
{
GeglNode *translate =
gegl_node_new_child (node,
"operation", "gegl:translate",
"x", (gdouble) dest_offset_x,
"y", (gdouble) dest_offset_y,
NULL);
gegl_node_connect_to (translate, "output",
output, "input");
output = translate;
}
if (affect == 0)
{
/* nothing to do, pass through */
gegl_node_connect_to (input, "output",
output, "input");
return node;
}
buffer_source = gimp_gegl_add_buffer_source (node, buffer,
buffer_offset_x,
buffer_offset_y);
if (mask)
mask_source = gimp_gegl_add_buffer_source (node, mask,
mask_offset_x,
mask_offset_y);
else
mask_source = NULL;
mode_node = gegl_node_new_child (node,
"operation", "gimp:normal-mode",
NULL);
gimp_gegl_mode_node_set (mode_node, mode, opacity, FALSE);
gegl_node_connect_to (buffer_source, "output",
mode_node, "aux");
if (mask_source)
gegl_node_connect_to (mask_source, "output",
mode_node, "aux2");
gegl_node_connect_to (input, "output",
mode_node, "input");
if (affect == GIMP_COMPONENT_ALL)
{
gegl_node_connect_to (mode_node, "output",
output, "input");
}
else
{
GeglNode *affect_node;
affect_node = gegl_node_new_child (node,
"operation", "gimp:mask-components",
"mask", affect,
NULL);
gegl_node_connect_to (input, "output",
affect_node, "input");
gegl_node_connect_to (mode_node, "output",
affect_node, "aux");
gegl_node_connect_to (affect_node, "output",
output, "input");
}
return node;
}
GeglNode *
gimp_gegl_add_buffer_source (GeglNode *parent,
GeglBuffer *buffer,
gint offset_x,
gint offset_y)
{
GeglNode *buffer_source;
g_return_val_if_fail (GEGL_IS_NODE (parent), NULL);
g_return_val_if_fail (GEGL_IS_BUFFER (buffer), NULL);
buffer_source = gegl_node_new_child (parent,
"operation", "gegl:buffer-source",
"buffer", buffer,
NULL);
if (offset_x != 0 || offset_y != 0)
{
GeglNode *translate =
gegl_node_new_child (parent,
"operation", "gegl:translate",
"x", (gdouble) offset_x,
"y", (gdouble) offset_y,
NULL);
gegl_node_connect_to (buffer_source, "output",
translate, "input");
buffer_source = translate;
}
return buffer_source;
}
void
gimp_gegl_mode_node_set (GeglNode *node,
GimpLayerModeEffects mode,
gdouble opacity,
gboolean premultiplied)
{
const gchar *operation = "gimp:normal-mode";
g_return_if_fail (GEGL_IS_NODE (node));
switch (mode)
{
case GIMP_NORMAL_MODE: operation = "gimp:normal-mode"; break;
case GIMP_DISSOLVE_MODE: operation = "gimp:dissolve-mode"; break;
case GIMP_BEHIND_MODE: operation = "gimp:behind-mode"; break;
case GIMP_MULTIPLY_MODE: operation = "gimp:multiply-mode"; break;
case GIMP_SCREEN_MODE: operation = "gimp:screen-mode"; break;
case GIMP_OVERLAY_MODE: operation = "gimp:overlay-mode"; break;
case GIMP_DIFFERENCE_MODE: operation = "gimp:difference-mode"; break;
case GIMP_ADDITION_MODE: operation = "gimp:addition-mode"; break;
case GIMP_SUBTRACT_MODE: operation = "gimp:subtract-mode"; break;
case GIMP_DARKEN_ONLY_MODE: operation = "gimp:darken-only-mode"; break;
case GIMP_LIGHTEN_ONLY_MODE: operation = "gimp:lighten-only-mode"; break;
case GIMP_HUE_MODE: operation = "gimp:hue-mode"; break;
case GIMP_SATURATION_MODE: operation = "gimp:saturation-mode"; break;
case GIMP_COLOR_MODE: operation = "gimp:color-mode"; break;
case GIMP_VALUE_MODE: operation = "gimp:value-mode"; break;
case GIMP_DIVIDE_MODE: operation = "gimp:divide-mode"; break;
case GIMP_DODGE_MODE: operation = "gimp:dodge-mode"; break;
case GIMP_BURN_MODE: operation = "gimp:burn-mode"; break;
case GIMP_HARDLIGHT_MODE: operation = "gimp:hardlight-mode"; break;
case GIMP_SOFTLIGHT_MODE: operation = "gimp:softlight-mode"; break;
case GIMP_GRAIN_EXTRACT_MODE: operation = "gimp:grain-extract-mode"; break;
case GIMP_GRAIN_MERGE_MODE: operation = "gimp:grain-merge-mode"; break;
case GIMP_COLOR_ERASE_MODE: operation = "gimp:color-erase-mode"; break;
case GIMP_ERASE_MODE: operation = "gimp:erase-mode"; break;
case GIMP_REPLACE_MODE: operation = "gimp:replace-mode"; break;
case GIMP_ANTI_ERASE_MODE: operation = "gimp:anti-erase-mode"; break;
default:
break;
}
gegl_node_set (node,
"operation", operation,
"opacity", opacity,
"premultiplied", premultiplied,
NULL);
}
void
gimp_gegl_node_set_matrix (GeglNode *node,
const GimpMatrix3 *matrix)
{
gchar *matrix_string;
g_return_if_fail (GEGL_IS_NODE (node));
g_return_if_fail (matrix != NULL);
matrix_string = gegl_matrix3_to_string ((GeglMatrix3 *) matrix);
gegl_node_set (node,
"transform", matrix_string,
NULL);
g_free (matrix_string);
}
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