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gimp/app/core/gimpobject.c

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/* The GIMP -- an image manipulation program
* Copyright (C) 1995-1997 Spencer Kimball and Peter Mattis
*
* 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 2 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, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#include "config.h"
#include <string.h>
#include <glib-object.h>
#include "libgimpbase/gimpbase.h"
#include "core-types.h"
#include "gimp-utils.h"
#include "gimpmarshal.h"
#include "gimpobject.h"
enum
{
DISCONNECT,
NAME_CHANGED,
LAST_SIGNAL
};
enum
{
PROP_0,
PROP_NAME
};
static void gimp_object_class_init (GimpObjectClass *klass);
static void gimp_object_init (GimpObject *object);
static void gimp_object_dispose (GObject *object);
static void gimp_object_finalize (GObject *object);
static void gimp_object_set_property (GObject *object,
guint property_id,
const GValue *value,
GParamSpec *pspec);
static void gimp_object_get_property (GObject *object,
guint property_id,
GValue *value,
GParamSpec *pspec);
static gint64 gimp_object_real_get_memsize (GimpObject *object,
gint64 *gui_size);
static void gimp_object_name_normalize (GimpObject *object);
static guint object_signals[LAST_SIGNAL] = { 0 };
static GObjectClass *parent_class = NULL;
GType
gimp_object_get_type (void)
{
static GType object_type = 0;
if (! object_type)
{
static const GTypeInfo object_info =
{
sizeof (GimpObjectClass),
(GBaseInitFunc) NULL,
(GBaseFinalizeFunc) NULL,
(GClassInitFunc) gimp_object_class_init,
NULL, /* class_finalize */
NULL, /* class_data */
sizeof (GimpObject),
0, /* n_preallocs */
(GInstanceInitFunc) gimp_object_init,
};
object_type = g_type_register_static (G_TYPE_OBJECT,
"GimpObject",
&object_info, 0);
}
return object_type;
}
static void
gimp_object_class_init (GimpObjectClass *klass)
{
GObjectClass *object_class;
object_class = G_OBJECT_CLASS (klass);
parent_class = g_type_class_peek_parent (klass);
object_signals[DISCONNECT] =
g_signal_new ("disconnect",
G_TYPE_FROM_CLASS (klass),
G_SIGNAL_RUN_FIRST,
G_STRUCT_OFFSET (GimpObjectClass, disconnect),
NULL, NULL,
gimp_marshal_VOID__VOID,
G_TYPE_NONE, 0);
object_signals[NAME_CHANGED] =
g_signal_new ("name_changed",
G_TYPE_FROM_CLASS (klass),
G_SIGNAL_RUN_FIRST,
G_STRUCT_OFFSET (GimpObjectClass, name_changed),
NULL, NULL,
gimp_marshal_VOID__VOID,
G_TYPE_NONE, 0);
object_class->dispose = gimp_object_dispose;
object_class->finalize = gimp_object_finalize;
object_class->set_property = gimp_object_set_property;
object_class->get_property = gimp_object_get_property;
klass->disconnect = NULL;
klass->name_changed = NULL;
klass->get_memsize = gimp_object_real_get_memsize;
g_object_class_install_property (object_class,
PROP_NAME,
g_param_spec_string ("name",
NULL, NULL,
NULL,
G_PARAM_READWRITE));
}
static void
gimp_object_init (GimpObject *object)
{
object->name = NULL;
object->normalized = NULL;
}
static void
gimp_object_dispose (GObject *object)
{
gboolean disconnected;
disconnected = GPOINTER_TO_INT (g_object_get_data (G_OBJECT (object),
"disconnected"));
if (! disconnected)
{
g_signal_emit (object, object_signals[DISCONNECT], 0);
g_object_set_data (G_OBJECT (object), "disconnected",
GINT_TO_POINTER (TRUE));
}
G_OBJECT_CLASS (parent_class)->dispose (object);
}
static void
gimp_object_finalize (GObject *object)
{
gimp_object_name_free (GIMP_OBJECT (object));
G_OBJECT_CLASS (parent_class)->finalize (object);
}
static void
gimp_object_set_property (GObject *object,
guint property_id,
const GValue *value,
GParamSpec *pspec)
{
GimpObject *gimp_object = GIMP_OBJECT (object);
switch (property_id)
{
case PROP_NAME:
gimp_object_set_name (gimp_object, g_value_get_string (value));
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
break;
}
}
static void
gimp_object_get_property (GObject *object,
guint property_id,
GValue *value,
GParamSpec *pspec)
{
GimpObject *gimp_object = GIMP_OBJECT (object);
switch (property_id)
{
case PROP_NAME:
g_value_set_string (value, gimp_object->name);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
break;
}
}
/**
* gimp_object_set_name:
* @object: a #GimpObject
* @name: the @object's new name
*
* Sets the @object's name. Takes care of freeing the old name and
* emitting the "name_changed" signal if the old and new name differ.
**/
void
gimp_object_set_name (GimpObject *object,
const gchar *name)
{
g_return_if_fail (GIMP_IS_OBJECT (object));
if ((!object->name && !name) ||
(object->name && name && !strcmp (object->name, name)))
return;
gimp_object_name_free (object);
object->name = g_strdup (name);
gimp_object_name_changed (object);
}
/**
* gimp_object_set_name_safe:
* @object: a #GimpObject
* @name: the @object's new name
*
* A safe version of gimp_object_set_name() that takes care of
* handling newlines and overly long names. The actual name set
* may be different to the @name you pass.
**/
void
gimp_object_set_name_safe (GimpObject *object,
const gchar *name)
{
g_return_if_fail (GIMP_IS_OBJECT (object));
if ((!object->name && !name) ||
(object->name && name && !strcmp (object->name, name)))
return;
gimp_object_name_free (object);
object->name = gimp_utf8_strtrim (name, 30);
gimp_object_name_changed (object);
}
/**
* gimp_object_get_name:
* @object: a #GimpObject
*
* This function gives access to the name of a GimpObject. The
* returned name belongs to the object and must not be freed.
*
* Return value: a pointer to the @object's name
**/
const gchar *
gimp_object_get_name (const GimpObject *object)
{
g_return_val_if_fail (GIMP_IS_OBJECT (object), NULL);
return object->name;
}
/**
* gimp_object_name_changed:
* @object: a #GimpObject
*
* Causes the "name_changed" signal to be emitted.
**/
void
gimp_object_name_changed (GimpObject *object)
{
g_return_if_fail (GIMP_IS_OBJECT (object));
g_signal_emit (object, object_signals[NAME_CHANGED], 0);
}
/**
* gimp_object_name_free:
* @object: a #GimpObject
*
* Frees the name of @object and sets the name pointer to %NULL. Also
* takes care of the normalized name that the object might be caching.
*
* In general you should be using gimp_object_set_name() instead. But
* if you ever need to free the object name but don't want the
* "name_changed" signal to be emitted, then use this function. Never
* ever free the object name directly!
**/
void
gimp_object_name_free (GimpObject *object)
{
if (object->normalized)
{
if (object->normalized != object->name)
g_free (object->normalized);
object->normalized = NULL;
}
if (object->name)
{
g_free (object->name);
object->name = NULL;
}
}
/**
* gimp_object_name_collate:
* @object1: a #GimpObject
* @object2: another #GimpObject
*
* Compares two object names for ordering using the linguistically
* correct rules for the current locale. It caches the normalized
* version of the object name to speed up subsequent calls.
*
* Return value: -1 if object1 compares before object2,
* 0 if they compare equal,
* 1 if object1 compares after object2.
**/
gint
gimp_object_name_collate (GimpObject *object1,
GimpObject *object2)
{
if (! object1->normalized)
gimp_object_name_normalize (object1);
if (! object2->normalized)
gimp_object_name_normalize (object2);
return strcmp (object1->normalized, object2->normalized);
}
static void
gimp_object_name_normalize (GimpObject *object)
{
g_return_if_fail (object->normalized == NULL);
if (object->name)
{
gchar *key = g_utf8_collate_key (object->name, -1);
if (strcmp (key, object->name))
{
object->normalized = key;
}
else
{
g_free (key);
object->normalized = object->name;
}
}
}
#define DEBUG_MEMSIZE 1
#ifdef DEBUG_MEMSIZE
gboolean gimp_debug_memsize = FALSE;
#endif
gint64
gimp_object_get_memsize (GimpObject *object,
gint64 *gui_size)
{
gint64 my_size = 0;
gint64 my_gui_size = 0;
g_return_val_if_fail (GIMP_IS_OBJECT (object), 0);
#ifdef DEBUG_MEMSIZE
if (gimp_debug_memsize)
{
static gint indent_level = 0;
static GList *aggregation_tree = NULL;
static gchar indent_buf[256];
gint64 memsize;
gint64 gui_memsize = 0;
gint i;
gint my_indent_level;
gchar *object_size;
indent_level++;
my_indent_level = indent_level;
memsize = GIMP_OBJECT_GET_CLASS (object)->get_memsize (object,
&gui_memsize);
indent_level--;
for (i = 0; i < MIN (my_indent_level * 2, sizeof (indent_buf) - 1); i++)
indent_buf[i] = ' ';
indent_buf[i] = '\0';
object_size = g_strdup_printf ("%s%s \"%s\": "
"%" G_GINT64_FORMAT
"(%" G_GINT64_FORMAT ")\n",
indent_buf,
g_type_name (G_TYPE_FROM_INSTANCE (object)),
object->name,
memsize,
gui_memsize);
aggregation_tree = g_list_prepend (aggregation_tree, object_size);
if (indent_level == 0)
{
g_list_foreach (aggregation_tree, (GFunc) g_print, NULL);
g_list_foreach (aggregation_tree, (GFunc) g_free, NULL);
g_list_free (aggregation_tree);
aggregation_tree = NULL;
}
return memsize;
}
#endif /* DEBUG_MEMSIZE */
my_size = GIMP_OBJECT_GET_CLASS (object)->get_memsize (object,
&my_gui_size);
if (gui_size)
*gui_size = my_gui_size;
return my_size;
}
static gint64
gimp_object_real_get_memsize (GimpObject *object,
gint64 *gui_size)
{
gint64 memsize = 0;
if (object->name)
memsize += strlen (object->name) + 1;
return memsize + gimp_g_object_get_memsize ((GObject *) object);
}
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