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

154 lines
3.9 KiB
C

/* 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 <http://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-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);
}
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;
}
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;
}