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gimp/libgimp/gimpprocedure.c

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/* GIMP - The GNU Image Manipulation Program
* Copyright (C) 1995 Spencer Kimball and Peter Mattis
*
* gimpprocedure.c
* Copyright (C) 2019 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 <stdarg.h>
#include <sys/types.h>
#include "gimp.h"
#include "libgimpbase/gimpprotocol.h"
#include "libgimpbase/gimpwire.h"
#include "gimpgpparams.h"
#include "gimppdb-private.h"
#include "gimpplugin-private.h"
#include "gimpplugin_pdb.h"
#include "gimpprocedure-private.h"
#include "libgimp-intl.h"
enum
{
PROP_0,
PROP_PLUG_IN,
PROP_NAME,
PROP_PROCEDURE_TYPE,
N_PROPS
};
struct _GimpProcedurePrivate
{
GimpPlugIn *plug_in;
gchar *name;
GimpPDBProcType proc_type;
gchar *image_types;
gchar *menu_label;
GList *menu_paths;
GimpIconType icon_type;
gpointer icon_data;
gchar *blurb;
gchar *help;
gchar *help_id;
gchar *authors;
gchar *copyright;
gchar *date;
gint32 n_args;
GParamSpec **args;
gint32 n_values;
GParamSpec **values;
GimpRunFunc run_func;
gpointer run_data;
GDestroyNotify run_data_destroy;
gboolean installed;
GHashTable *displays;
GHashTable *images;
GHashTable *items;
};
static void gimp_procedure_constructed (GObject *object);
static void gimp_procedure_finalize (GObject *object);
static void gimp_procedure_set_property (GObject *object,
guint property_id,
const GValue *value,
GParamSpec *pspec);
static void gimp_procedure_get_property (GObject *object,
guint property_id,
GValue *value,
GParamSpec *pspec);
static void gimp_procedure_real_install (GimpProcedure *procedure);
static void gimp_procedure_real_uninstall (GimpProcedure *procedure);
static GimpValueArray *
gimp_procedure_real_run (GimpProcedure *procedure,
const GimpValueArray *args);
static gboolean gimp_procedure_validate_args (GimpProcedure *procedure,
GParamSpec **param_specs,
gint n_param_specs,
GimpValueArray *args,
gboolean return_vals,
GError **error);
static void gimp_procedure_set_icon (GimpProcedure *procedure,
GimpIconType icon_type,
gconstpointer icon_data);
G_DEFINE_TYPE_WITH_PRIVATE (GimpProcedure, gimp_procedure, G_TYPE_OBJECT)
#define parent_class gimp_procedure_parent_class
static GParamSpec *props[N_PROPS] = { NULL, };
static void
gimp_procedure_class_init (GimpProcedureClass *klass)
{
GObjectClass *object_class = G_OBJECT_CLASS (klass);
object_class->constructed = gimp_procedure_constructed;
object_class->finalize = gimp_procedure_finalize;
object_class->set_property = gimp_procedure_set_property;
object_class->get_property = gimp_procedure_get_property;
klass->install = gimp_procedure_real_install;
klass->uninstall = gimp_procedure_real_uninstall;
klass->run = gimp_procedure_real_run;
props[PROP_PLUG_IN] =
g_param_spec_object ("plug-in",
"Plug-In",
"The GimpPlugIn of this plug-in process",
GIMP_TYPE_PLUG_IN,
GIMP_PARAM_READWRITE |
G_PARAM_CONSTRUCT_ONLY);
props[PROP_NAME] =
g_param_spec_string ("name",
"Name",
"The procedure's name",
NULL,
GIMP_PARAM_READWRITE |
G_PARAM_CONSTRUCT_ONLY);
props[PROP_PROCEDURE_TYPE] =
g_param_spec_enum ("procedure-type",
"Procedure type",
"The procedure's type",
GIMP_TYPE_PDB_PROC_TYPE,
GIMP_PDB_PROC_TYPE_PLUGIN,
GIMP_PARAM_READWRITE |
G_PARAM_CONSTRUCT_ONLY);
g_object_class_install_properties (object_class, N_PROPS, props);
}
static void
gimp_procedure_init (GimpProcedure *procedure)
{
procedure->priv = gimp_procedure_get_instance_private (procedure);
}
static void
gimp_procedure_constructed (GObject *object)
{
GimpProcedure *procedure = GIMP_PROCEDURE (object);
G_OBJECT_CLASS (parent_class)->constructed (object);
g_assert (GIMP_IS_PLUG_IN (procedure->priv->plug_in));
g_assert (procedure->priv->name != NULL);
}
static void
gimp_procedure_finalize (GObject *object)
{
GimpProcedure *procedure = GIMP_PROCEDURE (object);
gint i;
if (procedure->priv->run_data_destroy)
procedure->priv->run_data_destroy (procedure->priv->run_data);
g_clear_object (&procedure->priv->plug_in);
g_clear_pointer (&procedure->priv->name, g_free);
g_clear_pointer (&procedure->priv->image_types, g_free);
g_clear_pointer (&procedure->priv->menu_label, g_free);
g_clear_pointer (&procedure->priv->blurb, g_free);
g_clear_pointer (&procedure->priv->help, g_free);
g_clear_pointer (&procedure->priv->help_id, g_free);
g_clear_pointer (&procedure->priv->authors, g_free);
g_clear_pointer (&procedure->priv->copyright, g_free);
g_clear_pointer (&procedure->priv->date, g_free);
g_list_free_full (procedure->priv->menu_paths, g_free);
procedure->priv->menu_paths = NULL;
gimp_procedure_set_icon (procedure, GIMP_ICON_TYPE_ICON_NAME, NULL);
if (procedure->priv->args)
{
for (i = 0; i < procedure->priv->n_args; i++)
g_param_spec_unref (procedure->priv->args[i]);
g_clear_pointer (&procedure->priv->args, g_free);
}
if (procedure->priv->values)
{
for (i = 0; i < procedure->priv->n_values; i++)
g_param_spec_unref (procedure->priv->values[i]);
g_clear_pointer (&procedure->priv->values, g_free);
}
_gimp_procedure_destroy_proxies (procedure);
G_OBJECT_CLASS (parent_class)->finalize (object);
}
static void
gimp_procedure_set_property (GObject *object,
guint property_id,
const GValue *value,
GParamSpec *pspec)
{
GimpProcedure *procedure = GIMP_PROCEDURE (object);
switch (property_id)
{
case PROP_PLUG_IN:
g_set_object (&procedure->priv->plug_in, g_value_get_object (value));
break;
case PROP_NAME:
g_free (procedure->priv->name);
procedure->priv->name = g_value_dup_string (value);
break;
case PROP_PROCEDURE_TYPE:
procedure->priv->proc_type = g_value_get_enum (value);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
break;
}
}
static void
gimp_procedure_get_property (GObject *object,
guint property_id,
GValue *value,
GParamSpec *pspec)
{
GimpProcedure *procedure = GIMP_PROCEDURE (object);
switch (property_id)
{
case PROP_PLUG_IN:
g_value_set_object (value, procedure->priv->plug_in);
break;
case PROP_NAME:
g_value_set_string (value, procedure->priv->name);
break;
case PROP_PROCEDURE_TYPE:
g_value_set_enum (value, procedure->priv->proc_type);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
break;
}
}
static void
gimp_procedure_real_install (GimpProcedure *procedure)
{
GParamSpec **args;
GParamSpec **return_vals;
gint n_args = 0;
gint n_return_vals = 0;
GList *list;
GimpPlugIn *plug_in;
GPProcInstall proc_install;
GimpIconType icon_type;
guint8 *icon_data = NULL;
gsize icon_data_length = 0;
gint i;
g_return_if_fail (procedure->priv->installed == FALSE);
args = gimp_procedure_get_arguments (procedure, &n_args);
return_vals = gimp_procedure_get_return_values (procedure, &n_return_vals);
proc_install.name = (gchar *) gimp_procedure_get_name (procedure);
proc_install.blurb = (gchar *) gimp_procedure_get_blurb (procedure);
proc_install.help = (gchar *) gimp_procedure_get_help (procedure);
proc_install.help_id = (gchar *) gimp_procedure_get_help_id (procedure);
proc_install.authors = (gchar *) gimp_procedure_get_authors (procedure);
proc_install.copyright = (gchar *) gimp_procedure_get_copyright (procedure);
proc_install.date = (gchar *) gimp_procedure_get_date (procedure);
proc_install.menu_label = (gchar *) gimp_procedure_get_menu_label (procedure);
proc_install.image_types = (gchar *) gimp_procedure_get_image_types (procedure);
proc_install.type = gimp_procedure_get_proc_type (procedure);
proc_install.nparams = n_args;
proc_install.nreturn_vals = n_return_vals;
proc_install.params = g_new0 (GPParamDef, n_args);
proc_install.return_vals = g_new0 (GPParamDef, n_return_vals);
for (i = 0; i < n_args; i++)
{
_gimp_param_spec_to_gp_param_def (args[i],
&proc_install.params[i]);
}
for (i = 0; i < n_return_vals; i++)
{
_gimp_param_spec_to_gp_param_def (return_vals[i],
&proc_install.return_vals[i]);
}
plug_in = gimp_procedure_get_plug_in (procedure);
if (! gp_proc_install_write (_gimp_plug_in_get_write_channel (plug_in),
&proc_install, plug_in))
gimp_quit ();
icon_type = gimp_procedure_get_icon_type (procedure);
switch (icon_type)
{
case GIMP_ICON_TYPE_ICON_NAME:
{
icon_data = (guint8 *) gimp_procedure_get_icon_name (procedure);
if (icon_data)
icon_data_length = strlen ((gchar *) icon_data) + 1;
}
break;
case GIMP_ICON_TYPE_PIXBUF:
{
GdkPixbuf *pixbuf = gimp_procedure_get_icon_pixbuf (procedure);
if (pixbuf)
gdk_pixbuf_save_to_buffer (pixbuf,
(gchar **) &icon_data, &icon_data_length,
"png", NULL, NULL);
}
break;
case GIMP_ICON_TYPE_IMAGE_FILE:
{
GFile *file = gimp_procedure_get_icon_file (procedure);
if (file)
{
icon_data = (guchar *) g_file_get_uri (file);
icon_data_length = strlen ((gchar *) icon_data) + 1;
}
}
break;
}
if (icon_data)
_gimp_plugin_icon_register (gimp_procedure_get_name (procedure),
icon_type, icon_data_length, icon_data);
switch (icon_type)
{
case GIMP_ICON_TYPE_ICON_NAME:
break;
case GIMP_ICON_TYPE_PIXBUF:
case GIMP_ICON_TYPE_IMAGE_FILE:
g_free (icon_data);
break;
}
g_free (proc_install.params);
g_free (proc_install.return_vals);
for (list = gimp_procedure_get_menu_paths (procedure);
list;
list = g_list_next (list))
{
_gimp_plugin_menu_register (gimp_procedure_get_name (procedure),
list->data);
}
procedure->priv->installed = TRUE;
}
static void
gimp_procedure_real_uninstall (GimpProcedure *procedure)
{
GimpPlugIn *plug_in;
GPProcUninstall proc_uninstall;
g_return_if_fail (procedure->priv->installed == TRUE);
proc_uninstall.name = (gchar *) gimp_procedure_get_name (procedure);
plug_in = gimp_procedure_get_plug_in (procedure);
if (! gp_proc_uninstall_write (_gimp_plug_in_get_write_channel (plug_in),
&proc_uninstall, plug_in))
gimp_quit ();
procedure->priv->installed = FALSE;
}
static GimpValueArray *
gimp_procedure_real_run (GimpProcedure *procedure,
const GimpValueArray *args)
{
return procedure->priv->run_func (procedure, args,
procedure->priv->run_data);
}
/* public functions */
/**
* gimp_procedure_new:
* @plug_in: a #GimpPlugIn.
* @name: the new procedure's name.
* @proc_type: the new procedure's #GimpPDBProcType.
* @run_func: the run function for the new procedure.
* @run_data: user data passed to @run_func.
* @run_data_destroy: (nullable): free function for @run_data, or %NULL.
*
* Creates a new procedure named @name which will call @run_func when
* invoked.
*
* The @name parameter is mandatory and should be unique, or it will
* overwrite an already existing procedure (overwrite procedures only
* if you know what you're doing).
*
* @proc_type should be %GIMP_PDB_PROC_TYPE_PLUGIN for "normal" plug-ins.
*
* Using %GIMP_PDB_PROC_TYPE_EXTENSION means that the plug-in will add
* temporary procedures. Therefore, the GIMP core will wait until the
* %GIMP_PDB_PROC_TYPE_EXTENSION procedure has called
* gimp_procedure_extension_ready(), which means that the procedure
* has done its initialization, installed its temporary procedures and
* is ready to run.
*
* <emphasis>Not calling gimp_procedure_extension_ready() from a
* %GIMP_PDB_PROC_TYPE_EXTENSION procedure will cause the GIMP core to
* lock up.</emphasis>
*
* Additionally, a %GIMP_PDB_PROC_TYPE_EXTENSION procedure with no
* arguments added is an "automatic" extension that will be
* automatically started on each GIMP startup.
*
* %GIMP_PDB_PROC_TYPE_TEMPORARY must be used for temporary procedures
* that are created during a plug-ins lifetime. They must be added to
* the #GimpPlugIn using gimp_plug_in_add_temp_procedure().
*
* @run_func is called via gimp_procedure_run().
*
* For %GIMP_PDB_PROC_TYPE_PLUGIN and %GIMP_PDB_PROC_TYPE_EXTENSION
* procedures the call of @run_func is basically the lifetime of the
* plug-in.
*
* Returns: a new #GimpProcedure.
*
* Since: 3.0
**/
GimpProcedure *
gimp_procedure_new (GimpPlugIn *plug_in,
const gchar *name,
GimpPDBProcType proc_type,
GimpRunFunc run_func,
gpointer run_data,
GDestroyNotify run_data_destroy)
{
GimpProcedure *procedure;
g_return_val_if_fail (GIMP_IS_PLUG_IN (plug_in), NULL);
g_return_val_if_fail (gimp_is_canonical_identifier (name), NULL);
g_return_val_if_fail (proc_type != GIMP_PDB_PROC_TYPE_INTERNAL, NULL);
g_return_val_if_fail (run_func != NULL, NULL);
procedure = g_object_new (GIMP_TYPE_PROCEDURE,
"plug-in", plug_in,
"name", name,
"procedure-type", proc_type,
NULL);
procedure->priv->run_func = run_func;
procedure->priv->run_data = run_data;
procedure->priv->run_data_destroy = run_data_destroy;
return procedure;
}
/**
* gimp_procedure_get_plug_in:
* @procedure: A #GimpProcedure.
*
* Returns: (transfer none): The #GimpPlugIn given in gimp_procedure_new().
*
* Since: 3.0
**/
GimpPlugIn *
gimp_procedure_get_plug_in (GimpProcedure *procedure)
{
g_return_val_if_fail (GIMP_IS_PROCEDURE (procedure), NULL);
return procedure->priv->plug_in;
}
/**
* gimp_procedure_get_name:
* @procedure: A #GimpProcedure.
*
* Returns: The procedure's name given in gimp_procedure_new().
*
* Since: 3.0
**/
const gchar *
gimp_procedure_get_name (GimpProcedure *procedure)
{
g_return_val_if_fail (GIMP_IS_PROCEDURE (procedure), NULL);
return procedure->priv->name;
}
/**
* gimp_procedure_get_proc_type:
* @procedure: A #GimpProcedure.
*
* Returns: The procedure's type given in gimp_procedure_new().
*
* Since: 3.0
**/
GimpPDBProcType
gimp_procedure_get_proc_type (GimpProcedure *procedure)
{
g_return_val_if_fail (GIMP_IS_PROCEDURE (procedure),
GIMP_PDB_PROC_TYPE_PLUGIN);
return procedure->priv->proc_type;
}
/**
* gimp_procedure_set_image_types:
* @procedure: A #GimpProcedure.
* @image_types: The image types this procedure can operate on.
*
* This is a comma separated list of image types, or actually drawable
* types, that this procedure can deal with. Wildcards are possible
* here, so you could say "RGB*" instead of "RGB, RGBA" or "*" for all
* image types.
*
* Supported types are "RGB", "GRAY", "INDEXED" and their variants
* with alpha.
*
* Since: 3.0
**/
void
gimp_procedure_set_image_types (GimpProcedure *procedure,
const gchar *image_types)
{
g_return_if_fail (GIMP_IS_PROCEDURE (procedure));
g_free (procedure->priv->image_types);
procedure->priv->image_types = g_strdup (image_types);
}
/**
* gimp_procedure_get_image_types:
* @procedure: A #GimpProcedure.
*
* This function retrieves the list of image types the procedure can
* operate on. See gimp_procedure_set_image_types().
*
* Returns: The image types.
*
* Since: 3.0
**/
const gchar *
gimp_procedure_get_image_types (GimpProcedure *procedure)
{
g_return_val_if_fail (GIMP_IS_PROCEDURE (procedure), NULL);
return procedure->priv->image_types;
}
/**
* gimp_procedure_set_menu_label:
* @procedure: A #GimpProcedure.
* @menu_label: The @procedure's menu label.
*
* Sets the label to use for the @procedure's menu entry, The
* location(s) where to register in the menu hierarchy is chosen using
* gimp_procedure_add_menu_path().
*
* For translations of menu labels to work properly, @menu_label
* should only be marked for translation but passed to this function
* untranslated, for example using N_("Label"). GIMP will look up the
* translation in the textdomain registered for the plug-in.
*
* Since: 3.0
**/
void
gimp_procedure_set_menu_label (GimpProcedure *procedure,
const gchar *menu_label)
{
g_return_if_fail (GIMP_IS_PROCEDURE (procedure));
g_clear_pointer (&procedure->priv->menu_label, g_free);
procedure->priv->menu_label = g_strdup (menu_label);
}
/**
* gimp_procedure_get_menu_label:
* @procedure: A #GimpProcedure.
*
* Returns: The procedure's menu label given in
* gimp_procedure_set_menu_label().
*
* Since: 3.0
**/
const gchar *
gimp_procedure_get_menu_label (GimpProcedure *procedure)
{
g_return_val_if_fail (GIMP_IS_PROCEDURE (procedure), NULL);
return procedure->priv->menu_label;
}
/**
* gimp_procedure_add_menu_path:
* @procedure: A #GimpProcedure.
* @menu_path: The @procedure's additional menu path.
*
* Adds a menu path to the procedure. Only procedures which have a menu
* label can add a menu path.
*
* Menu paths are untranslated paths to menus and submenus with the
* syntax:
*
* &lt;Prefix&gt;/Path/To/Submenu
*
* for instance:
*
* &lt;Image&gt;/Layer/Transform
*
* See also: gimp_plug_in_add_menu_branch().
*
* Since: 3.0
**/
void
gimp_procedure_add_menu_path (GimpProcedure *procedure,
const gchar *menu_path)
{
g_return_if_fail (GIMP_IS_PROCEDURE (procedure));
g_return_if_fail (menu_path != NULL);
g_return_if_fail (procedure->priv->menu_label != NULL);
procedure->priv->menu_paths = g_list_append (procedure->priv->menu_paths,
g_strdup (menu_path));
if (procedure->priv->installed)
_gimp_plugin_menu_register (gimp_procedure_get_name (procedure),
menu_path);
}
/**
* gimp_procedure_get_menu_paths:
* @procedure: A #GimpProcedure.
*
* Returns: (transfer none) (element-type gchar*): the @procedure's
* menu paths as added with gimp_procedure_add_menu_path().
*
* Since: 3.0
**/
GList *
gimp_procedure_get_menu_paths (GimpProcedure *procedure)
{
g_return_val_if_fail (GIMP_IS_PROCEDURE (procedure), NULL);
return procedure->priv->menu_paths;
}
/**
* gimp_procedure_set_icon_name:
* @procedure: a #GimpProcedure.
* @icon_name: (nullable): an icon name.
*
* Sets the icon for @procedure to the icon referenced by @icon_name.
*
* Since: 3.0
*/
void
gimp_procedure_set_icon_name (GimpProcedure *procedure,
const gchar *icon_name)
{
g_return_if_fail (GIMP_IS_PROCEDURE (procedure));
gimp_procedure_set_icon (procedure,
GIMP_ICON_TYPE_ICON_NAME,
icon_name);
}
/**
* gimp_procedure_set_icon_pixbuf:
* @procedure: a #GimpProcedure.
* @pixbuf: (nullable): a #GdkPixbuf.
*
* Sets the icon for @procedure to @pixbuf.
*
* Since: 3.0
*/
void
gimp_procedure_set_icon_pixbuf (GimpProcedure *procedure,
GdkPixbuf *pixbuf)
{
g_return_if_fail (GIMP_IS_PROCEDURE (procedure));
g_return_if_fail (pixbuf == NULL || GDK_IS_PIXBUF (pixbuf));
gimp_procedure_set_icon (procedure,
GIMP_ICON_TYPE_PIXBUF,
pixbuf);
}
/**
* gimp_procedure_set_icon_file:
* @procedure: a #GimpProcedure.
* @file: (nullable): a #GFile pointing to an image file.
*
* Sets the icon for @procedure to the contents of an image file.
*
* Since: 3.0
*/
void
gimp_procedure_set_icon_file (GimpProcedure *procedure,
GFile *file)
{
g_return_if_fail (GIMP_IS_PROCEDURE (procedure));
g_return_if_fail (file == NULL || G_IS_FILE (file));
gimp_procedure_set_icon (procedure,
GIMP_ICON_TYPE_IMAGE_FILE,
file);
}
/**
* gimp_procedure_get_icon_type:
* @procedure: a #GimpProcedure.
*
* Gets the type of data set as @procedure's icon. Depending on the
* result, you can call the relevant specific function, such as
* gimp_procedure_get_icon_name().
*
* Returns: the #GimpIconType of @procedure's icon.
*
* Since: 3.0
*/
GimpIconType
gimp_procedure_get_icon_type (GimpProcedure *procedure)
{
g_return_val_if_fail (GIMP_IS_PROCEDURE (procedure), -1);
return procedure->priv->icon_type;
}
/**
* gimp_procedure_get_icon_name:
* @procedure: a #GimpProcedure.
*
* Gets the name of the icon if one was set for @procedure.
*
* Returns: (nullable): the icon name or %NULL if no icon name was set.
*
* Since: 3.0
*/
const gchar *
gimp_procedure_get_icon_name (GimpProcedure *procedure)
{
g_return_val_if_fail (GIMP_IS_PROCEDURE (procedure), NULL);
if (procedure->priv->icon_type == GIMP_ICON_TYPE_ICON_NAME)
return (const gchar *) procedure->priv->icon_data;
return NULL;
}
/**
* gimp_procedure_get_icon_file:
* @procedure: a #GimpProcedure.
*
* Gets the file of the icon if one was set for @procedure.
*
* Returns: (nullable) (transfer none): the icon #GFile or %NULL if no
* file was set.
*
* Since: 3.0
*/
GFile *
gimp_procedure_get_icon_file (GimpProcedure *procedure)
{
g_return_val_if_fail (GIMP_IS_PROCEDURE (procedure), NULL);
if (procedure->priv->icon_type == GIMP_ICON_TYPE_IMAGE_FILE)
return (GFile *) procedure->priv->icon_data;
return NULL;
}
/**
* gimp_procedure_get_icon_pixbuf:
* @procedure: a #GimpProcedure.
*
* Gets the #GdkPixbuf of the icon if an icon was set this way for
* @procedure.
*
* Returns: (nullable) (transfer none): the icon pixbuf or %NULL if no
* icon name was set.
*
* Since: 3.0
*/
GdkPixbuf *
gimp_procedure_get_icon_pixbuf (GimpProcedure *procedure)
{
g_return_val_if_fail (GIMP_IS_PROCEDURE (procedure), NULL);
if (procedure->priv->icon_type == GIMP_ICON_TYPE_PIXBUF)
return (GdkPixbuf *) procedure->priv->icon_data;
return NULL;
}
/**
* gimp_procedure_set_documentation:
* @procedure: A #GimpProcedure.
* @blurb: The @procedure's blurb.
* @help: The @procedure's help text.
* @help_id: The @procedure's help ID.
*
* @blurb is used as the @procedure's tooltip when represented in the UI,
* for example as a menu entry.
*
* For translations of tooltips to work properly, @blurb should only
* be marked for translation but passed to this function untranslated,
* for example using N_("Blurb"). GIMP will look up the translation in
* the textdomain registered for the plug-in.
*
* @help is a free-form text that's meant as documentation for
* developers of scripts and plug-ins.
*
* Sets various documentation strings on @procedure.
*
* Since: 3.0
**/
void
gimp_procedure_set_documentation (GimpProcedure *procedure,
const gchar *blurb,
const gchar *help,
const gchar *help_id)
{
g_return_if_fail (GIMP_IS_PROCEDURE (procedure));
g_clear_pointer (&procedure->priv->blurb, g_free);
g_clear_pointer (&procedure->priv->help, g_free);
g_clear_pointer (&procedure->priv->help_id, g_free);
procedure->priv->blurb = g_strdup (blurb);
procedure->priv->help = g_strdup (help);
procedure->priv->help_id = g_strdup (help_id);
}
/**
* gimp_procedure_get_blurb:
* @procedure: A #GimpProcedure.
*
* Returns: The procedure's blurb given in
* gimp_procedure_set_documentation().
*
* Since: 3.0
**/
const gchar *
gimp_procedure_get_blurb (GimpProcedure *procedure)
{
g_return_val_if_fail (GIMP_IS_PROCEDURE (procedure), NULL);
return procedure->priv->blurb;
}
/**
* gimp_procedure_get_help:
* @procedure: A #GimpProcedure.
*
* Returns: The procedure's help text given in
* gimp_procedure_set_documentation().
*
* Since: 3.0
**/
const gchar *
gimp_procedure_get_help (GimpProcedure *procedure)
{
g_return_val_if_fail (GIMP_IS_PROCEDURE (procedure), NULL);
return procedure->priv->help;
}
/**
* gimp_procedure_get_help_id:
* @procedure: A #GimpProcedure.
*
* Returns: The procedure's help ID given in
* gimp_procedure_set_documentation().
*
* Since: 3.0
**/
const gchar *
gimp_procedure_get_help_id (GimpProcedure *procedure)
{
g_return_val_if_fail (GIMP_IS_PROCEDURE (procedure), NULL);
return procedure->priv->help_id;
}
/**
* gimp_procedure_set_attribution:
* @procedure: A #GimpProcedure.
* @authors: The @procedure's author(s).
* @copyright: The @procedure's copyright.
* @date: The @procedure's date (written or published).
*
* Sets various attribution strings on @procedure.
*
* Since: 3.0
**/
void
gimp_procedure_set_attribution (GimpProcedure *procedure,
const gchar *authors,
const gchar *copyright,
const gchar *date)
{
g_return_if_fail (GIMP_IS_PROCEDURE (procedure));
g_free (procedure->priv->authors);
g_free (procedure->priv->copyright);
g_free (procedure->priv->date);
procedure->priv->authors = g_strdup (authors);
procedure->priv->copyright = g_strdup (copyright);
procedure->priv->date = g_strdup (date);
}
/**
* gimp_procedure_get_authors:
* @procedure: A #GimpProcedure.
*
* Returns: The procedure's authors given in
* gimp_procedure_set_attribution().
*
* Since: 3.0
**/
const gchar *
gimp_procedure_get_authors (GimpProcedure *procedure)
{
g_return_val_if_fail (GIMP_IS_PROCEDURE (procedure), NULL);
return procedure->priv->authors;
}
/**
* gimp_procedure_get_copyright:
* @procedure: A #GimpProcedure.
*
* Returns: The procedure's copyright given in
* gimp_procedure_set_attribution().
*
* Since: 3.0
**/
const gchar *
gimp_procedure_get_copyright (GimpProcedure *procedure)
{
g_return_val_if_fail (GIMP_IS_PROCEDURE (procedure), NULL);
return procedure->priv->copyright;
}
/**
* gimp_procedure_get_date:
* @procedure: A #GimpProcedure.
*
* Returns: The procedure's date given in
* gimp_procedure_set_attribution().
*
* Since: 3.0
**/
const gchar *
gimp_procedure_get_date (GimpProcedure *procedure)
{
g_return_val_if_fail (GIMP_IS_PROCEDURE (procedure), NULL);
return procedure->priv->date;
}
/**
* gimp_procedure_add_argument:
* @procedure: the #GimpProcedure.
* @pspec: (transfer full): the argument specification.
*
* Add a new argument to @procedure according to @pspec specifications.
* The arguments will be ordered according to the call order to
* gimp_procedure_add_argument() and
* gimp_procedure_add_argument_from_property().
*
* Since: 3.0
**/
void
gimp_procedure_add_argument (GimpProcedure *procedure,
GParamSpec *pspec)
{
g_return_if_fail (GIMP_IS_PROCEDURE (procedure));
g_return_if_fail (G_IS_PARAM_SPEC (pspec));
procedure->priv->args = g_renew (GParamSpec *, procedure->priv->args,
procedure->priv->n_args + 1);
procedure->priv->args[procedure->priv->n_args] = pspec;
g_param_spec_ref_sink (pspec);
procedure->priv->n_args++;
}
/**
* gimp_procedure_add_argument_from_property:
* @procedure: the #GimpProcedure.
* @config: a #GObject.
* @prop_name: property name in @config.
*
* Add a new argument to @procedure according to the specifications of
* the property @prop_name registered on @config.
*
* The arguments will be ordered according to the call order to
* gimp_procedure_add_argument() and
* gimp_procedure_add_argument_from_property().
*/
void
gimp_procedure_add_argument_from_property (GimpProcedure *procedure,
GObject *config,
const gchar *prop_name)
{
GParamSpec *pspec;
g_return_if_fail (GIMP_IS_PROCEDURE (procedure));
g_return_if_fail (G_IS_OBJECT (config));
g_return_if_fail (prop_name != NULL);
pspec = g_object_class_find_property (G_OBJECT_GET_CLASS (config), prop_name);
g_return_if_fail (pspec != NULL);
gimp_procedure_add_argument (procedure, pspec);
}
/**
* gimp_procedure_add_return_value:
* @procedure: the #GimpProcedure.
* @pspec: (transfer full): the return value specification.
*
* Add a new return value to @procedure according to @pspec
* specifications.
*
* The returned values will be ordered according to the call order to
* gimp_procedure_add_return_value() and
* gimp_procedure_add_return_value_from_property().
*
* Since: 3.0
**/
void
gimp_procedure_add_return_value (GimpProcedure *procedure,
GParamSpec *pspec)
{
g_return_if_fail (GIMP_IS_PROCEDURE (procedure));
g_return_if_fail (G_IS_PARAM_SPEC (pspec));
procedure->priv->values = g_renew (GParamSpec *, procedure->priv->values,
procedure->priv->n_values + 1);
procedure->priv->values[procedure->priv->n_values] = pspec;
g_param_spec_ref_sink (pspec);
procedure->priv->n_values++;
}
/**
* gimp_procedure_add_return_value_from_property:
* @procedure: the #GimpProcedure.
* @config: a #GObject.
* @prop_name: property name in @config.
*
* Add a new return value to @procedure according to the specifications of
* the property @prop_name registered on @config.
*
* The returned values will be ordered according to the call order to
* gimp_procedure_add_return_value() and
* gimp_procedure_add_return_value_from_property().
*/
void
gimp_procedure_add_return_value_from_property (GimpProcedure *procedure,
GObject *config,
const gchar *prop_name)
{
GParamSpec *pspec;
g_return_if_fail (GIMP_IS_PROCEDURE (procedure));
g_return_if_fail (G_IS_OBJECT (config));
g_return_if_fail (prop_name != NULL);
pspec = g_object_class_find_property (G_OBJECT_GET_CLASS (config), prop_name);
g_return_if_fail (pspec != NULL);
gimp_procedure_add_return_value (procedure, pspec);
}
/**
* gimp_procedure_get_arguments:
* @procedure: A #GimpProcedure.
* @n_arguments: (out): Returns the number of arguments.
*
* Returns: (transfer none) (array length=n_arguments): An array
* of @GParamSpec in the order added with
* gimp_procedure_add_argument().
*
* Since: 3.0
**/
GParamSpec **
gimp_procedure_get_arguments (GimpProcedure *procedure,
gint *n_arguments)
{
g_return_val_if_fail (GIMP_IS_PROCEDURE (procedure), NULL);
g_return_val_if_fail (n_arguments != NULL, NULL);
*n_arguments = procedure->priv->n_args;
return procedure->priv->args;
}
/**
* gimp_procedure_get_return_values:
* @procedure: A #GimpProcedure.
* @n_return_values: (out): Returns the number of return values.
*
* Returns: (transfer none) (array length=n_return_values): An array
* of @GParamSpec in the order added with
* gimp_procedure_add_return_value().
*
* Since: 3.0
**/
GParamSpec **
gimp_procedure_get_return_values (GimpProcedure *procedure,
gint *n_return_values)
{
g_return_val_if_fail (GIMP_IS_PROCEDURE (procedure), NULL);
g_return_val_if_fail (n_return_values != NULL, NULL);
*n_return_values = procedure->priv->n_values;
return procedure->priv->values;
}
GimpValueArray *
gimp_procedure_new_arguments (GimpProcedure *procedure)
{
GimpValueArray *args;
GValue value = G_VALUE_INIT;
gint i;
g_return_val_if_fail (GIMP_IS_PROCEDURE (procedure), NULL);
args = gimp_value_array_new (procedure->priv->n_args);
for (i = 0; i < procedure->priv->n_args; i++)
{
GParamSpec *pspec = procedure->priv->args[i];
g_value_init (&value, G_PARAM_SPEC_VALUE_TYPE (pspec));
g_param_value_set_default (pspec, &value);
gimp_value_array_append (args, &value);
g_value_unset (&value);
}
return args;
}
/**
* gimp_procedure_new_return_values:
* @procedure: the #GimpProcedure.
* @status: the success status of the procedure run.
* @error: (in) (nullable) (transfer full):
* an optional #GError. This parameter should be set if
* @status is either #GIMP_PDB_EXECUTION_ERROR or
* #GIMP_PDB_CALLING_ERROR.
*
* Format the expected return values from procedures, using the return
* values set with gimp_procedure_add_return_value().
*
* Returns: the expected #GimpValueArray as could be returned by a
* #GimpRunFunc.
*
* Since: 3.0
**/
GimpValueArray *
gimp_procedure_new_return_values (GimpProcedure *procedure,
GimpPDBStatusType status,
GError *error)
{
GimpValueArray *args;
GValue value = G_VALUE_INIT;
gint i;
g_return_val_if_fail (status != GIMP_PDB_PASS_THROUGH, NULL);
switch (status)
{
case GIMP_PDB_SUCCESS:
case GIMP_PDB_CANCEL:
g_return_val_if_fail (GIMP_IS_PROCEDURE (procedure), NULL);
args = gimp_value_array_new (procedure->priv->n_values + 1);
g_value_init (&value, GIMP_TYPE_PDB_STATUS_TYPE);
g_value_set_enum (&value, status);
gimp_value_array_append (args, &value);
g_value_unset (&value);
for (i = 0; i < procedure->priv->n_values; i++)
{
GParamSpec *pspec = procedure->priv->values[i];
g_value_init (&value, G_PARAM_SPEC_VALUE_TYPE (pspec));
g_param_value_set_default (pspec, &value);
gimp_value_array_append (args, &value);
g_value_unset (&value);
}
break;
case GIMP_PDB_EXECUTION_ERROR:
case GIMP_PDB_CALLING_ERROR:
args = gimp_value_array_new ((error && error->message) ? 2 : 1);
g_value_init (&value, GIMP_TYPE_PDB_STATUS_TYPE);
g_value_set_enum (&value, status);
gimp_value_array_append (args, &value);
g_value_unset (&value);
if (error && error->message)
{
g_value_init (&value, G_TYPE_STRING);
g_value_set_string (&value, error->message);
gimp_value_array_append (args, &value);
g_value_unset (&value);
}
break;
default:
g_return_val_if_reached (NULL);
}
g_clear_error (&error);
return args;
}
/**
* gimp_procedure_run:
* @procedure: a @GimpProcedure.
* @args: the @procedure's arguments.
*
* Runs the procedure, calling the run_func given in gimp_procedure_new().
*
* Returns: (transfer full): The @procedure's return values.
*
* Since: 3.0
**/
GimpValueArray *
gimp_procedure_run (GimpProcedure *procedure,
GimpValueArray *args)
{
GimpValueArray *return_vals;
GError *error = NULL;
gint i;
g_return_val_if_fail (GIMP_IS_PROCEDURE (procedure), NULL);
g_return_val_if_fail (args != NULL, NULL);
if (! gimp_procedure_validate_args (procedure,
procedure->priv->args,
procedure->priv->n_args,
args, FALSE, &error))
{
return_vals = gimp_procedure_new_return_values (procedure,
GIMP_PDB_CALLING_ERROR,
error);
g_clear_error (&error);
return return_vals;
}
/* add missing args with default values */
if (gimp_value_array_length (args) < procedure->priv->n_args)
{
GimpValueArray *complete = gimp_value_array_new (0);
for (i = 0; i < procedure->priv->n_args; i++)
{
GParamSpec *pspec = procedure->priv->args[i];
GValue value = G_VALUE_INIT;
g_value_init (&value, G_PARAM_SPEC_VALUE_TYPE (pspec));
if (i < gimp_value_array_length (args))
{
GValue *orig = gimp_value_array_index (args, i);
g_value_copy (orig, &value);
}
else
{
g_param_value_set_default (pspec, &value);
}
gimp_value_array_append (complete, &value);
g_value_unset (&value);
}
/* call the procedure */
return_vals = GIMP_PROCEDURE_GET_CLASS (procedure)->run (procedure,
complete);
gimp_value_array_unref (complete);
}
else
{
/* call the procedure */
return_vals = GIMP_PROCEDURE_GET_CLASS (procedure)->run (procedure,
args);
}
if (! return_vals)
{
g_warning ("%s: no return values, shouldn't happen", G_STRFUNC);
error = g_error_new (0, 0,
_("Procedure '%s' returned no return values"),
gimp_procedure_get_name (procedure));
return_vals = gimp_procedure_new_return_values (procedure,
GIMP_PDB_EXECUTION_ERROR,
error);
g_clear_error (&error);
}
return return_vals;
}
/**
* gimp_procedure_extension_ready:
* @procedure: A #GimpProcedure
*
* Notify the main GIMP application that the extension has been
* properly initialized and is ready to run.
*
* This function <emphasis>must</emphasis> be called from every
* procedure's #GimpRunFunc that was created as
* #GIMP_PDB_PROC_TYPE_EXTENSION.
*
* Subsequently, extensions can process temporary procedure run
* requests using either gimp_plug_in_extension_enable() or
* gimp_plug_in_extension_process().
*
* See also: gimp_procedure_new().
*
* Since: 3.0
**/
void
gimp_procedure_extension_ready (GimpProcedure *procedure)
{
GimpPlugIn *plug_in;
g_return_if_fail (GIMP_IS_PROCEDURE (procedure));
g_return_if_fail (procedure->priv->proc_type == GIMP_PDB_PROC_TYPE_EXTENSION);
plug_in = gimp_procedure_get_plug_in (procedure);
if (! gp_extension_ack_write (_gimp_plug_in_get_write_channel (plug_in),
plug_in))
gimp_quit ();
}
/* private functions */
static gboolean
gimp_procedure_validate_args (GimpProcedure *procedure,
GParamSpec **param_specs,
gint n_param_specs,
GimpValueArray *args,
gboolean return_vals,
GError **error)
{
gint i;
for (i = 0; i < MIN (gimp_value_array_length (args), n_param_specs); i++)
{
GValue *arg = gimp_value_array_index (args, i);
GParamSpec *pspec = param_specs[i];
GType arg_type = G_VALUE_TYPE (arg);
GType spec_type = G_PARAM_SPEC_VALUE_TYPE (pspec);
if (arg_type != spec_type)
{
if (return_vals)
{
g_set_error (error,
GIMP_PDB_ERROR, GIMP_PDB_ERROR_INVALID_RETURN_VALUE,
_("Procedure '%s' returned a wrong value type "
"for return value '%s' (#%d). "
"Expected %s, got %s."),
gimp_procedure_get_name (procedure),
g_param_spec_get_name (pspec),
i + 1, g_type_name (spec_type),
g_type_name (arg_type));
}
else
{
g_set_error (error,
GIMP_PDB_ERROR, GIMP_PDB_ERROR_INVALID_ARGUMENT,
_("Procedure '%s' has been called with a "
"wrong value type for argument '%s' (#%d). "
"Expected %s, got %s."),
gimp_procedure_get_name (procedure),
g_param_spec_get_name (pspec),
i + 1, g_type_name (spec_type),
g_type_name (arg_type));
}
return FALSE;
}
else if (! (pspec->flags & GIMP_PARAM_NO_VALIDATE))
{
GValue string_value = G_VALUE_INIT;
g_value_init (&string_value, G_TYPE_STRING);
if (g_value_type_transformable (arg_type, G_TYPE_STRING))
g_value_transform (arg, &string_value);
else
g_value_set_static_string (&string_value,
"<not transformable to string>");
if (g_param_value_validate (pspec, arg))
{
const gchar *value = g_value_get_string (&string_value);
if (value == NULL)
value = "(null)";
if (return_vals)
{
g_set_error (error,
GIMP_PDB_ERROR,
GIMP_PDB_ERROR_INVALID_RETURN_VALUE,
_("Procedure '%s' returned "
"'%s' as return value '%s' "
"(#%d, type %s). "
"This value is out of range."),
gimp_procedure_get_name (procedure),
value,
g_param_spec_get_name (pspec),
i + 1, g_type_name (spec_type));
}
else
{
g_set_error (error,
GIMP_PDB_ERROR,
GIMP_PDB_ERROR_INVALID_ARGUMENT,
_("Procedure '%s' has been called with "
"value '%s' for argument '%s' "
"(#%d, type %s). "
"This value is out of range."),
gimp_procedure_get_name (procedure),
value,
g_param_spec_get_name (pspec),
i + 1, g_type_name (spec_type));
}
g_value_unset (&string_value);
return FALSE;
}
/* UTT-8 validate all strings */
if (G_PARAM_SPEC_TYPE (pspec) == G_TYPE_PARAM_STRING ||
G_PARAM_SPEC_TYPE (pspec) == GIMP_TYPE_PARAM_STRING_ARRAY)
{
gboolean valid = TRUE;
if (G_PARAM_SPEC_TYPE (pspec) == G_TYPE_PARAM_STRING)
{
const gchar *string = g_value_get_string (arg);
if (string)
valid = g_utf8_validate (string, -1, NULL);
}
else
{
const GimpArray *array = g_value_get_boxed (arg);
if (array)
{
const gchar **strings = (const gchar **) array->data;
gint i;
for (i = 0; i < array->length && valid; i++)
if (strings[i])
valid = g_utf8_validate (strings[i], -1, NULL);
}
}
if (! valid)
{
if (return_vals)
{
g_set_error (error,
GIMP_PDB_ERROR,
GIMP_PDB_ERROR_INVALID_RETURN_VALUE,
_("Procedure '%s' returned an "
"invalid UTF-8 string for argument '%s'."),
gimp_procedure_get_name (procedure),
g_param_spec_get_name (pspec));
}
else
{
g_set_error (error,
GIMP_PDB_ERROR,
GIMP_PDB_ERROR_INVALID_ARGUMENT,
_("Procedure '%s' has been called with an "
"invalid UTF-8 string for argument '%s'."),
gimp_procedure_get_name (procedure),
g_param_spec_get_name (pspec));
}
g_value_unset (&string_value);
return FALSE;
}
}
g_value_unset (&string_value);
}
}
return TRUE;
}
static void
gimp_procedure_set_icon (GimpProcedure *procedure,
GimpIconType icon_type,
gconstpointer icon_data)
{
g_return_if_fail (GIMP_IS_PROCEDURE (procedure));
if (icon_data == procedure->priv->icon_data)
return;
switch (procedure->priv->icon_type)
{
case GIMP_ICON_TYPE_ICON_NAME:
g_clear_pointer (&procedure->priv->icon_data, g_free);
break;
case GIMP_ICON_TYPE_PIXBUF:
case GIMP_ICON_TYPE_IMAGE_FILE:
g_clear_object (&procedure->priv->icon_data);
break;
}
procedure->priv->icon_type = icon_type;
switch (icon_type)
{
case GIMP_ICON_TYPE_ICON_NAME:
procedure->priv->icon_data = g_strdup (icon_data);
break;
case GIMP_ICON_TYPE_PIXBUF:
case GIMP_ICON_TYPE_IMAGE_FILE:
g_set_object (&procedure->priv->icon_data, (GObject *) icon_data);
break;
default:
g_return_if_reached ();
}
}
/* internal functions */
GimpDisplay *
_gimp_procedure_get_display (GimpProcedure *procedure,
gint32 display_id)
{
GimpDisplay *display = NULL;
g_return_val_if_fail (GIMP_IS_PROCEDURE (procedure), NULL);
g_return_val_if_fail (gimp_display_id_is_valid (display_id), NULL);
if (G_UNLIKELY (! procedure->priv->displays))
procedure->priv->displays =
g_hash_table_new_full (g_direct_hash,
g_direct_equal,
NULL,
(GDestroyNotify) g_object_unref);
display = g_hash_table_lookup (procedure->priv->displays,
GINT_TO_POINTER (display_id));
if (! display)
{
display = _gimp_plug_in_get_display (procedure->priv->plug_in,
display_id);
if (display)
g_hash_table_insert (procedure->priv->displays,
GINT_TO_POINTER (display_id),
g_object_ref (display));
}
return display;
}
GimpImage *
_gimp_procedure_get_image (GimpProcedure *procedure,
gint32 image_id)
{
GimpImage *image = NULL;
g_return_val_if_fail (GIMP_IS_PROCEDURE (procedure), NULL);
g_return_val_if_fail (gimp_image_id_is_valid (image_id), NULL);
if (G_UNLIKELY (! procedure->priv->images))
procedure->priv->images =
g_hash_table_new_full (g_direct_hash,
g_direct_equal,
NULL,
(GDestroyNotify) g_object_unref);
image = g_hash_table_lookup (procedure->priv->images,
GINT_TO_POINTER (image_id));
if (! image)
{
image = _gimp_plug_in_get_image (procedure->priv->plug_in,
image_id);
if (image)
g_hash_table_insert (procedure->priv->images,
GINT_TO_POINTER (image_id),
g_object_ref (image));
}
return image;
}
GimpItem *
_gimp_procedure_get_item (GimpProcedure *procedure,
gint32 item_id)
{
GimpItem *item = NULL;
g_return_val_if_fail (GIMP_IS_PROCEDURE (procedure), NULL);
g_return_val_if_fail (gimp_item_id_is_valid (item_id), NULL);
if (G_UNLIKELY (! procedure->priv->items))
procedure->priv->items =
g_hash_table_new_full (g_direct_hash,
g_direct_equal,
NULL,
(GDestroyNotify) g_object_unref);
item = g_hash_table_lookup (procedure->priv->items,
GINT_TO_POINTER (item_id));
if (! item)
{
item = _gimp_plug_in_get_item (procedure->priv->plug_in,
item_id);
if (item)
g_hash_table_insert (procedure->priv->items,
GINT_TO_POINTER (item_id),
g_object_ref (item));
}
return item;
}
void
_gimp_procedure_destroy_proxies (GimpProcedure *procedure)
{
g_return_if_fail (GIMP_IS_PROCEDURE (procedure));
g_clear_pointer (&procedure->priv->displays, g_hash_table_unref);
g_clear_pointer (&procedure->priv->images, g_hash_table_unref);
g_clear_pointer (&procedure->priv->items, g_hash_table_unref);
}
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