260 lines
8.0 KiB
C
260 lines
8.0 KiB
C
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/* PIKA - Photo and Image Kooker Application
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* a rebranding of The GNU Image Manipulation Program (created with heckimp)
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* A derived work which may be trivial. However, any changes may be (C)2023 by Aldercone Studio
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*
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* Original copyright, applying to most contents (license remains unchanged):
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* Copyright (C) 1995 Spencer Kimball and Peter Mattis
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*
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* pika-gegl-nodes.h
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* Copyright (C) 2012 Michael Natterer <mitch@gimp.org>
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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 "config.h"
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#include <gegl.h>
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#include "pika-gegl-types.h"
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#include "operations/layer-modes/pika-layer-modes.h"
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#include "pika-gegl-nodes.h"
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#include "pika-gegl-utils.h"
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GeglNode *
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pika_gegl_create_flatten_node (const PikaRGB *background,
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const Babl *space,
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PikaLayerColorSpace composite_space)
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{
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GeglNode *node;
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GeglNode *input;
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GeglNode *output;
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GeglNode *color;
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GeglNode *mode;
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GeglColor *c;
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g_return_val_if_fail (background != NULL, NULL);
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g_return_val_if_fail (composite_space == PIKA_LAYER_COLOR_SPACE_RGB_LINEAR ||
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composite_space == PIKA_LAYER_COLOR_SPACE_RGB_PERCEPTUAL,
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NULL);
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node = gegl_node_new ();
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input = gegl_node_get_input_proxy (node, "input");
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output = gegl_node_get_output_proxy (node, "output");
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c = pika_gegl_color_new (background, space);
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color = gegl_node_new_child (node,
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"operation", "gegl:color",
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"value", c,
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"format", pika_layer_mode_get_format (
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PIKA_LAYER_MODE_NORMAL,
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PIKA_LAYER_COLOR_SPACE_AUTO,
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composite_space,
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PIKA_LAYER_COMPOSITE_AUTO,
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NULL),
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NULL);
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g_object_unref (c);
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pika_gegl_node_set_underlying_operation (node, color);
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mode = gegl_node_new_child (node,
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"operation", "pika:normal",
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NULL);
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pika_gegl_mode_node_set_mode (mode,
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PIKA_LAYER_MODE_NORMAL,
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PIKA_LAYER_COLOR_SPACE_AUTO,
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composite_space,
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PIKA_LAYER_COMPOSITE_AUTO);
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gegl_node_connect (input, "output",
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mode, "aux");
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gegl_node_link_many (color, mode, output, NULL);
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return node;
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}
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GeglNode *
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pika_gegl_create_apply_opacity_node (GeglBuffer *mask,
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gint mask_offset_x,
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gint mask_offset_y,
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gdouble opacity)
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{
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GeglNode *node;
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GeglNode *input;
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GeglNode *output;
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GeglNode *opacity_node;
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GeglNode *mask_source;
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g_return_val_if_fail (GEGL_IS_BUFFER (mask), NULL);
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node = gegl_node_new ();
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input = gegl_node_get_input_proxy (node, "input");
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output = gegl_node_get_output_proxy (node, "output");
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opacity_node = gegl_node_new_child (node,
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"operation", "gegl:opacity",
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"value", opacity,
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NULL);
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pika_gegl_node_set_underlying_operation (node, opacity_node);
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mask_source = pika_gegl_add_buffer_source (node, mask,
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mask_offset_x,
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mask_offset_y);
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gegl_node_link_many (input, opacity_node, output, NULL);
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gegl_node_connect (mask_source, "output",
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opacity_node, "aux");
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return node;
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}
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GeglNode *
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pika_gegl_create_transform_node (const PikaMatrix3 *matrix)
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{
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GeglNode *node;
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g_return_val_if_fail (matrix != NULL, NULL);
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node = gegl_node_new_child (NULL,
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"operation", "gegl:transform",
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NULL);
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pika_gegl_node_set_matrix (node, matrix);
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return node;
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}
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GeglNode *
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pika_gegl_add_buffer_source (GeglNode *parent,
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GeglBuffer *buffer,
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gint offset_x,
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gint offset_y)
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{
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GeglNode *buffer_source;
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g_return_val_if_fail (GEGL_IS_NODE (parent), NULL);
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g_return_val_if_fail (GEGL_IS_BUFFER (buffer), NULL);
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buffer_source = gegl_node_new_child (parent,
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"operation", "gegl:buffer-source",
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"buffer", buffer,
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NULL);
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if (offset_x != 0 || offset_y != 0)
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{
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GeglNode *translate =
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gegl_node_new_child (parent,
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"operation", "gegl:translate",
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"x", (gdouble) offset_x,
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"y", (gdouble) offset_y,
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NULL);
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gegl_node_link (buffer_source, translate);
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buffer_source = translate;
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}
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return buffer_source;
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}
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void
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pika_gegl_mode_node_set_mode (GeglNode *node,
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PikaLayerMode mode,
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PikaLayerColorSpace blend_space,
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PikaLayerColorSpace composite_space,
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PikaLayerCompositeMode composite_mode)
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{
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gdouble opacity;
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g_return_if_fail (GEGL_IS_NODE (node));
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if (blend_space == PIKA_LAYER_COLOR_SPACE_AUTO)
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blend_space = pika_layer_mode_get_blend_space (mode);
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if (composite_space == PIKA_LAYER_COLOR_SPACE_AUTO)
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composite_space = pika_layer_mode_get_composite_space (mode);
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if (composite_mode == PIKA_LAYER_COMPOSITE_AUTO)
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composite_mode = pika_layer_mode_get_composite_mode (mode);
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gegl_node_get (node,
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"opacity", &opacity,
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NULL);
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/* setting the operation creates a new instance, so we have to set
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* all its properties
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*/
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gegl_node_set (node,
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"operation", pika_layer_mode_get_operation_name (mode),
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"layer-mode", mode,
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"opacity", opacity,
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"blend-space", blend_space,
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"composite-space", composite_space,
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"composite-mode", composite_mode,
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NULL);
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}
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void
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pika_gegl_mode_node_set_opacity (GeglNode *node,
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gdouble opacity)
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{
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g_return_if_fail (GEGL_IS_NODE (node));
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gegl_node_set (node,
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"opacity", opacity,
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NULL);
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}
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void
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pika_gegl_node_set_matrix (GeglNode *node,
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const PikaMatrix3 *matrix)
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{
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gchar *matrix_string;
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g_return_if_fail (GEGL_IS_NODE (node));
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g_return_if_fail (matrix != NULL);
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matrix_string = gegl_matrix3_to_string ((GeglMatrix3 *) matrix);
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gegl_node_set (node,
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"transform", matrix_string,
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NULL);
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g_free (matrix_string);
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}
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void
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pika_gegl_node_set_color (GeglNode *node,
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const PikaRGB *color,
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const Babl *space)
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{
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GeglColor *gegl_color;
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g_return_if_fail (GEGL_IS_NODE (node));
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g_return_if_fail (color != NULL);
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gegl_color = pika_gegl_color_new (color, space);
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gegl_node_set (node,
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"value", gegl_color,
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NULL);
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g_object_unref (gegl_color);
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}
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