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gimp/app/gegl/gimp-gegl-utils.c

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/* GIMP - The GNU Image Manipulation Program
* Copyright (C) 1995 Spencer Kimball and Peter Mattis
*
* gimp-gegl-utils.h
* Copyright (C) 2007 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 <https://www.gnu.org/licenses/>.
*/
#include "config.h"
#include <string.h>
#include <gegl.h>
#include <gegl-plugin.h>
#include "gimp-gegl-types.h"
#include "core/gimpprogress.h"
#include "gimp-gegl-loops.h"
#include "gimp-gegl-utils.h"
GType
gimp_gegl_get_op_enum_type (const gchar *operation,
const gchar *property)
{
GeglNode *node;
GObject *op;
GParamSpec *pspec;
g_return_val_if_fail (operation != NULL, G_TYPE_NONE);
g_return_val_if_fail (property != NULL, G_TYPE_NONE);
node = g_object_new (GEGL_TYPE_NODE,
"operation", operation,
NULL);
g_object_get (node, "gegl-operation", &op, NULL);
g_object_unref (node);
g_return_val_if_fail (op != NULL, G_TYPE_NONE);
pspec = g_object_class_find_property (G_OBJECT_GET_CLASS (op), property);
g_return_val_if_fail (G_IS_PARAM_SPEC_ENUM (pspec), G_TYPE_NONE);
g_object_unref (op);
return G_TYPE_FROM_CLASS (G_PARAM_SPEC_ENUM (pspec)->enum_class);
}
GeglColor *
gimp_gegl_color_new (const GimpRGB *rgb)
{
GeglColor *color;
g_return_val_if_fail (rgb != NULL, NULL);
color = gegl_color_new (NULL);
gegl_color_set_pixel (color, babl_format ("R'G'B'A double"), rgb);
return color;
}
static void
gimp_gegl_progress_callback (GObject *object,
gdouble value,
GimpProgress *progress)
{
if (value == 0.0)
{
const gchar *text = g_object_get_data (object, "gimp-progress-text");
if (gimp_progress_is_active (progress))
gimp_progress_set_text (progress, "%s", text);
else
gimp_progress_start (progress, FALSE, "%s", text);
}
else
{
gimp_progress_set_value (progress, value);
if (value == 1.0)
gimp_progress_end (progress);
}
}
void
gimp_gegl_progress_connect (GeglNode *node,
GimpProgress *progress,
const gchar *text)
{
g_return_if_fail (GEGL_IS_NODE (node));
g_return_if_fail (GIMP_IS_PROGRESS (progress));
g_return_if_fail (text != NULL);
g_signal_connect (node, "progress",
G_CALLBACK (gimp_gegl_progress_callback),
progress);
g_object_set_data_full (G_OBJECT (node),
"gimp-progress-text", g_strdup (text),
(GDestroyNotify) g_free);
}
gboolean
gimp_gegl_node_is_source_operation (GeglNode *node)
{
GeglOperation *operation;
g_return_val_if_fail (GEGL_IS_NODE (node), FALSE);
operation = gegl_node_get_gegl_operation (node);
if (! operation)
return FALSE;
return GEGL_IS_OPERATION_SOURCE (operation);
}
gboolean
gimp_gegl_node_is_point_operation (GeglNode *node)
{
GeglOperation *operation;
g_return_val_if_fail (GEGL_IS_NODE (node), FALSE);
operation = gegl_node_get_gegl_operation (node);
if (! operation)
return FALSE;
return GEGL_IS_OPERATION_POINT_RENDER (operation) ||
GEGL_IS_OPERATION_POINT_FILTER (operation) ||
GEGL_IS_OPERATION_POINT_COMPOSER (operation) ||
GEGL_IS_OPERATION_POINT_COMPOSER3 (operation);
}
gboolean
gimp_gegl_node_is_area_filter_operation (GeglNode *node)
{
GeglOperation *operation;
g_return_val_if_fail (GEGL_IS_NODE (node), FALSE);
operation = gegl_node_get_gegl_operation (node);
if (! operation)
return FALSE;
return GEGL_IS_OPERATION_AREA_FILTER (operation) ||
/* be conservative and return TRUE for meta ops, since they may
* involve an area op
*/
GEGL_IS_OPERATION_META (operation);
}
const gchar *
gimp_gegl_node_get_key (GeglNode *node,
const gchar *key)
{
const gchar *operation_name;
g_return_val_if_fail (GEGL_IS_NODE (node), NULL);
operation_name = gegl_node_get_operation (node);
if (operation_name)
return gegl_operation_get_key (operation_name, key);
else
return NULL;
}
gboolean
gimp_gegl_node_has_key (GeglNode *node,
const gchar *key)
{
return gimp_gegl_node_get_key (node, key) != NULL;
}
const Babl *
gimp_gegl_node_get_format (GeglNode *node,
const gchar *pad_name)
{
GeglOperation *op;
const Babl *format = NULL;
g_return_val_if_fail (GEGL_IS_NODE (node), NULL);
g_return_val_if_fail (pad_name != NULL, NULL);
g_object_get (node, "gegl-operation", &op, NULL);
if (op)
{
format = gegl_operation_get_format (op, pad_name);
g_object_unref (op);
}
if (! format)
format = babl_format ("RGBA float");
return format;
}
void
gimp_gegl_node_set_underlying_operation (GeglNode *node,
GeglNode *operation)
{
g_return_if_fail (GEGL_IS_NODE (node));
g_return_if_fail (operation == NULL || GEGL_IS_NODE (operation));
g_object_set_data (G_OBJECT (node),
"gimp-gegl-node-underlying-operation", operation);
}
GeglNode *
gimp_gegl_node_get_underlying_operation (GeglNode *node)
{
GeglNode *operation;
g_return_val_if_fail (GEGL_IS_NODE (node), NULL);
operation = g_object_get_data (G_OBJECT (node),
"gimp-gegl-node-underlying-operation");
if (operation)
return gimp_gegl_node_get_underlying_operation (operation);
else
return node;
}
gboolean
gimp_gegl_param_spec_has_key (GParamSpec *pspec,
const gchar *key,
const gchar *value)
{
const gchar *v = gegl_param_spec_get_property_key (pspec, key);
if (v && ! strcmp (v, value))
return TRUE;
return FALSE;
}
GeglBuffer *
gimp_gegl_buffer_dup (GeglBuffer *buffer)
{
GeglBuffer *new_buffer;
const GeglRectangle *extent;
const GeglRectangle *abyss;
GeglRectangle rect;
gint shift_x;
gint shift_y;
gint tile_width;
gint tile_height;
g_return_val_if_fail (GEGL_IS_BUFFER (buffer), NULL);
extent = gegl_buffer_get_extent (buffer);
abyss = gegl_buffer_get_abyss (buffer);
g_object_get (buffer,
"shift-x", &shift_x,
"shift-y", &shift_y,
"tile-width", &tile_width,
"tile-height", &tile_height,
NULL);
new_buffer = g_object_new (GEGL_TYPE_BUFFER,
"format", gegl_buffer_get_format (buffer),
"x", extent->x,
"y", extent->y,
"width", extent->width,
"height", extent->height,
"abyss-x", abyss->x,
"abyss-y", abyss->y,
"abyss-width", abyss->width,
"abyss-height", abyss->height,
"shift-x", shift_x,
"shift-y", shift_y,
"tile-width", tile_width,
"tile-height", tile_height,
NULL);
gegl_rectangle_align_to_buffer (&rect, extent, buffer,
GEGL_RECTANGLE_ALIGNMENT_SUPERSET);
gimp_gegl_buffer_copy (buffer, &rect, GEGL_ABYSS_NONE,
new_buffer, &rect);
return new_buffer;
}
gboolean
gimp_gegl_buffer_set_extent (GeglBuffer *buffer,
const GeglRectangle *extent)
{
GeglRectangle aligned_old_extent;
GeglRectangle aligned_extent;
GeglRectangle old_extent_rem;
GeglRectangle diff_rects[4];
gint n_diff_rects;
gint i;
g_return_val_if_fail (GEGL_IS_BUFFER (buffer), FALSE);
g_return_val_if_fail (extent != NULL, FALSE);
gegl_rectangle_align_to_buffer (&aligned_old_extent,
gegl_buffer_get_extent (buffer), buffer,
GEGL_RECTANGLE_ALIGNMENT_SUPERSET);
gegl_rectangle_align_to_buffer (&aligned_extent,
extent, buffer,
GEGL_RECTANGLE_ALIGNMENT_SUPERSET);
n_diff_rects = gegl_rectangle_subtract (diff_rects,
&aligned_old_extent,
&aligned_extent);
for (i = 0; i < n_diff_rects; i++)
gegl_buffer_clear (buffer, &diff_rects[i]);
if (gegl_rectangle_intersect (&old_extent_rem,
gegl_buffer_get_extent (buffer),
&aligned_extent))
{
n_diff_rects = gegl_rectangle_subtract (diff_rects,
&old_extent_rem,
extent);
for (i = 0; i < n_diff_rects; i++)
gegl_buffer_clear (buffer, &diff_rects[i]);
}
return gegl_buffer_set_extent (buffer, extent);
}
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