mirror of https://github.com/GNOME/gimp.git
265 lines
6.9 KiB
C
265 lines
6.9 KiB
C
/* The GIMP -- an image manipulation program
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* Copyright (C) 1995-1997 Spencer Kimball and Peter Mattis
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*
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* Utitility functions for GimpConfig.
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* Copyright (C) 2001 Sven Neumann <sven@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 2 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, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*/
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#include "config.h"
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#include <string.h>
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#include <glib-object.h>
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#include "libgimpbase/gimpenv.h"
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#include "gimpconfig-utils.h"
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/**
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* gimp_config_diff:
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* @a: a #GObject
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* @b: another #GObject of the same type as @a
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* @flags: a mask of GParamFlags
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*
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* Compares all properties of @a and @b that have all @flags set. If
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* @flags is 0, all properties are compared.
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*
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* Return value: a GList of differing GParamSpecs.
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**/
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GList *
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gimp_config_diff (GObject *a,
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GObject *b,
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GParamFlags flags)
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{
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GParamSpec **param_specs;
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guint n_param_specs;
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gint i;
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GList *list = NULL;
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g_return_val_if_fail (G_IS_OBJECT (a), FALSE);
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g_return_val_if_fail (G_IS_OBJECT (b), FALSE);
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g_return_val_if_fail (G_TYPE_FROM_INSTANCE (a) == G_TYPE_FROM_INSTANCE (b),
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FALSE);
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param_specs = g_object_class_list_properties (G_OBJECT_GET_CLASS (a),
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&n_param_specs);
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for (i = 0; i < n_param_specs; i++)
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{
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if (! flags || ((param_specs[i]->flags & flags) == flags))
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{
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GValue a_value = { 0, };
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GValue b_value = { 0, };
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g_value_init (&a_value, param_specs[i]->value_type);
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g_value_init (&b_value, param_specs[i]->value_type);
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g_object_get_property (a, param_specs[i]->name, &a_value);
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g_object_get_property (b, param_specs[i]->name, &b_value);
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if (g_param_values_cmp (param_specs[i], &a_value, &b_value))
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list = g_list_prepend (list, param_specs[i]);
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g_value_unset (&a_value);
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g_value_unset (&b_value);
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}
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}
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g_free (param_specs);
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return g_list_reverse (list);
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}
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static void
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gimp_config_connect_notify (GObject *src,
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GParamSpec *param_spec,
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GObject *dest)
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{
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GValue value = { 0, };
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g_value_init (&value, param_spec->value_type);
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g_object_get_property (src, param_spec->name, &value);
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g_object_set_property (dest, param_spec->name, &value);
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g_value_unset (&value);
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}
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/**
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* gimp_config_connect:
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* @src: a #GObject
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* @dest: another #GObject of the same type as @src
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*
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* Connects @dest with @src so that all property changes of @src are
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* applied to @dest using a "notify" handler.
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**/
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void
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gimp_config_connect (GObject *src,
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GObject *dest)
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{
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g_return_if_fail (G_IS_OBJECT (src));
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g_return_if_fail (G_IS_OBJECT (dest));
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g_return_if_fail (G_TYPE_FROM_INSTANCE (src) == G_TYPE_FROM_INSTANCE (dest));
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g_signal_connect_object (src, "notify",
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G_CALLBACK (gimp_config_connect_notify),
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dest, 0);
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}
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/**
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* gimp_config_disconnect:
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* @src: a #GObject
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* @dest: another #GObject of the same type as @src
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*
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* Removes a connection between @dest and @src that was previously set
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* up using gimp_config_connect().
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**/
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void
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gimp_config_disconnect (GObject *src,
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GObject *dest)
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{
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g_return_if_fail (G_IS_OBJECT (src));
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g_return_if_fail (G_IS_OBJECT (dest));
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g_signal_handlers_disconnect_by_func (src,
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G_CALLBACK (gimp_config_connect_notify),
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dest);
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}
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/**
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* gimp_config_copy_properties:
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* @src: a #GObject
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* @dest: another #GObject of the same type as @src
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*
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* Retrieves all read and writeable property settings from @src and
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* applies the values to @dest.
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**/
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void
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gimp_config_copy_properties (GObject *src,
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GObject *dest)
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{
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GObjectClass *klass;
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GParamSpec **property_specs;
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guint n_property_specs;
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guint i;
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g_return_if_fail (G_IS_OBJECT (src));
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g_return_if_fail (G_IS_OBJECT (dest));
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g_return_if_fail (G_TYPE_FROM_INSTANCE (src) == G_TYPE_FROM_INSTANCE (dest));
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klass = G_OBJECT_GET_CLASS (src);
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property_specs = g_object_class_list_properties (klass, &n_property_specs);
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if (!property_specs)
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return;
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for (i = 0; i < n_property_specs; i++)
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{
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GParamSpec *prop_spec;
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prop_spec = property_specs[i];
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if (prop_spec->flags & G_PARAM_READABLE &&
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prop_spec->flags & G_PARAM_WRITABLE)
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{
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GValue value = { 0, };
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g_value_init (&value, prop_spec->value_type);
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g_object_get_property (src, prop_spec->name, &value);
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g_object_set_property (dest, prop_spec->name, &value);
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g_value_unset (&value);
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}
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}
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g_free (property_specs);
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}
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/**
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* gimp_config_reset_properties:
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* @object: a #GObject
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*
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* Resets all writable properties of @object to the default values as
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* defined in their #GParamSpec.
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**/
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void
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gimp_config_reset_properties (GObject *object)
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{
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GObjectClass *klass;
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GParamSpec **property_specs;
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guint n_property_specs;
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guint i;
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g_return_if_fail (G_IS_OBJECT (object));
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klass = G_OBJECT_GET_CLASS (object);
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property_specs = g_object_class_list_properties (klass, &n_property_specs);
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if (!property_specs)
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return;
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for (i = 0; i < n_property_specs; i++)
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{
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GParamSpec *prop_spec;
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prop_spec = property_specs[i];
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if ((prop_spec->flags & G_PARAM_WRITABLE) &&
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! G_IS_PARAM_SPEC_OBJECT (prop_spec))
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{
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GValue value = { 0, };
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g_value_init (&value, prop_spec->value_type);
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g_param_value_set_default (prop_spec, &value);
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g_object_set_property (object, prop_spec->name, &value);
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g_value_unset (&value);
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}
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}
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g_free (property_specs);
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}
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/*
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* GimpConfig path utilities
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*/
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gchar *
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gimp_config_build_data_path (const gchar *name)
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{
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return g_strconcat ("${gimp_dir}", G_DIR_SEPARATOR_S, name,
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G_SEARCHPATH_SEPARATOR_S,
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"${gimp_data_dir}", G_DIR_SEPARATOR_S, name,
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NULL);
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}
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gchar *
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gimp_config_build_plug_in_path (const gchar *name)
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{
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return g_strconcat ("${gimp_dir}", G_DIR_SEPARATOR_S, name,
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G_SEARCHPATH_SEPARATOR_S,
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"${gimp_plug_in_dir}", G_DIR_SEPARATOR_S, name,
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NULL);
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}
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