/* This file is an image processing operation for GEGL
*
* GEGL is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 3 of the License, or (at your option) any later version.
*
* GEGL 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with GEGL; if not, see <http://www.gnu.org/licenses/>.
*
* Copyright 2006 Øyvind Kolås <pippin@gimp.org>
*/
#include "config.h"
#include <glib/gi18n-lib.h>
#ifdef GEGL_CHANT_PROPERTIES
gegl_chant_file_path (path, _("File"), "", _("Path of file to load."))
#else
#define GEGL_CHANT_C_FILE "load.c"
#include "gegl-plugin.h"
struct _GeglChant
{
GeglOperationMeta parent_instance;
gpointer properties;
GeglNode *output;
GeglNode *load;
gchar *cached_path;
};
typedef struct
{
GeglOperationMetaClass parent_class;
} GeglChantClass;
#include "gegl-chant.h"
GEGL_DEFINE_DYNAMIC_OPERATION(GEGL_TYPE_OPERATION_META)
#include <stdio.h>
static void attach (GeglOperation *operation)
{
GeglChant *self = GEGL_CHANT (operation);
self->output = gegl_node_get_output_proxy (operation->node, "output");
self->load = gegl_node_new_child (operation->node,
"operation", "gegl:text",
"string", "foo",
NULL);
gegl_node_link (self->load, self->output);
}
static GeglNode *
detect (GeglOperation *operation,
gint x,
gint y)
{
GeglChant *self = GEGL_CHANT (operation);
GeglNode *output = self->output;
GeglRectangle bounds;
bounds = gegl_node_get_bounding_box (output); /* hopefully this is
as correct as original
which was peeking
directly into output->have_rect
*/
if (x >= bounds.x &&
y >= bounds.y &&
x < bounds.x + bounds.width &&
y < bounds.y + bounds.height)
return operation->node;
return NULL;
}
static void
prepare (GeglOperation *operation)
{
GeglChantO *o = GEGL_CHANT_PROPERTIES (operation);
GeglChant *self = GEGL_CHANT (operation);
/* warning: this might trigger regeneration of the graph,
* for now this is evaded by just ignoring additional
* requests to be made into members of the graph
*/
if (o->path[0]==0 && self->cached_path == NULL)
{
gegl_node_set (self->load,
"operation", "gegl:text",
"size", 20.0,
"string", "Eeeeek!",
NULL);
}
else
{
if (o->path[0] &&
(self->cached_path == NULL || strcmp (o->path, self->cached_path)))
{
const gchar *extension = strrchr (o->path, '.');
const gchar *handler = NULL;
if (!g_file_test (o->path, G_FILE_TEST_EXISTS))
{
gchar *name = g_filename_display_name (o->path);
gchar *tmp = g_strdup_printf ("File '%s' does not exist", name);
g_free (name);
g_warning ("load: %s", tmp);
gegl_node_set (self->load,
"operation", "gegl:text",
"size", 12.0,
"string", tmp,
NULL);
g_free (tmp);
}
else
{
if (extension)
handler = gegl_extension_handler_get (extension);
gegl_node_set (self->load,
"operation", handler,
NULL);
gegl_node_set (self->load,
"path", o->path,
NULL);
}
if (self->cached_path)
g_free (self->cached_path);
self->cached_path = g_strdup (o->path);
}
}
}
static void
dispose (GObject *object)
{
GeglChant *self = GEGL_CHANT (object);
if (self->cached_path)
{
g_free (self->cached_path);
self->cached_path = NULL;
}
G_OBJECT_CLASS (gegl_chant_parent_class)->dispose (object);
}
static void
gegl_chant_class_init (GeglChantClass *klass)
{
GObjectClass *object_class = G_OBJECT_CLASS (klass);
GeglOperationClass *operation_class = GEGL_OPERATION_CLASS (klass);
object_class->dispose = dispose;
operation_class->attach = attach;
operation_class->detect = detect;
operation_class->prepare = prepare;
operation_class->no_cache = TRUE;
gegl_operation_class_set_keys (operation_class,
"name" , "gegl:load",
"categories" , "meta:input",
"description",
_("Multipurpose file loader, that uses other native handlers, and "
"fallback conversion using image magick's convert."),
NULL);
}
#endif