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app: turn GimpFilteredContainer into a general purpose filter

This commit is contained in:
Michael Natterer 2011-03-22 23:41:42 +01:00
parent 051ef0ebcb
commit f3a99ed8f7
2 changed files with 101 additions and 401 deletions
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474
app/core/gimpfilteredcontainer.c
View File

@ -1,9 +1,9 @@
#if 0
/* GIMP - The GNU Image Manipulation Program
* Copyright (C) 1995-1997 Spencer Kimball and Peter Mattis
*
* gimpfilteredcontainer.c
* Copyright (C) 2008 Aurimas Juška <aurisj@svn.gnome.org>
* 2011 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
@ -25,108 +25,56 @@
#include "core-types.h"
#include "gimp.h"
#include "gimpmarshal.h"
#include "gimptag.h"
#include "gimptagged.h"
#include "gimpfilteredcontainer.h"
enum
{
TAG_COUNT_CHANGED,
LAST_SIGNAL
};
enum
{
PROP_0,
PROP_SRC_CONTAINER
PROP_SRC_CONTAINER,
PROP_FILTER_FUNC,
PROP_FILTER_DATA
};
typedef struct _MatchParams
{
GimpFilteredContainer *filtered_container;
GList *items_to_add;
GList *items_to_remove;
} MatchParams;
static void gimp_filtered_container_constructed (GObject *object);
static void gimp_filtered_container_dispose (GObject *object);
static void gimp_filtered_container_set_property (GObject *object,
guint property_id,
const GValue *value,
GParamSpec *pspec);
static void gimp_filtered_container_get_property (GObject *object,
guint property_id,
GValue *value,
GParamSpec *pspec);
static void gimp_filtered_container_constructed (GObject *object);
static void gimp_filtered_container_dispose (GObject *object);
static void gimp_filtered_container_set_property (GObject *object,
guint property_id,
const GValue *value,
GParamSpec *pspec);
static void gimp_filtered_container_get_property (GObject *object,
guint property_id,
GValue *value,
GParamSpec *pspec);
static gint64 gimp_filtered_container_get_memsize (GimpObject *object,
gint64 *gui_size);
static gboolean gimp_filtered_container_object_matches (GimpFilteredContainer *filtered_container,
GimpObject *object);
static void gimp_filtered_container_filter (GimpFilteredContainer *filtered_container);
static void gimp_filtered_container_src_add (GimpContainer *src_container,
GimpObject *obj,
GimpFilteredContainer *filtered_container);
static void gimp_filtered_container_src_remove (GimpContainer *src_container,
GimpObject *obj,
GimpFilteredContainer *filtered_container);
static void gimp_filtered_container_src_freeze (GimpContainer *src_container,
GimpFilteredContainer *filtered_container);
static void gimp_filtered_container_src_thaw (GimpContainer *src_container,
GimpFilteredContainer *filtered_container);
static void gimp_filtered_container_tag_added (GimpTagged *tagged,
GimpTag *tag,
GimpFilteredContainer *filtered_container);
static void gimp_filtered_container_tag_removed (GimpTagged *tagged,
GimpTag *tag,
GimpFilteredContainer *filtered_container);
static void gimp_filtered_container_tagged_item_added (GimpTagged *tagged,
GimpFilteredContainer *filtered_container);
static void gimp_filtered_container_tagged_item_removed(GimpTagged *tagged,
GimpFilteredContainer *filtered_container);
static void gimp_filtered_container_tag_count_changed (GimpFilteredContainer *filtered_container,
gint tag_count);
static void gimp_filtered_container_filter (GimpFilteredContainer *filtered_container);
static void gimp_filtered_container_src_add (GimpContainer *src_container,
GimpObject *obj,
GimpFilteredContainer *filtered_container);
static void gimp_filtered_container_src_remove (GimpContainer *src_container,
GimpObject *obj,
GimpFilteredContainer *filtered_container);
static void gimp_filtered_container_src_freeze (GimpContainer *src_container,
GimpFilteredContainer *filtered_container);
static void gimp_filtered_container_src_thaw (GimpContainer *src_container,
GimpFilteredContainer *filtered_container);
G_DEFINE_TYPE (GimpFilteredContainer, gimp_filtered_container, GIMP_TYPE_LIST)
#define parent_class gimp_filtered_container_parent_class
static guint gimp_filtered_container_signals[LAST_SIGNAL] = { 0, };
static void
gimp_filtered_container_class_init (GimpFilteredContainerClass *klass)
{
GObjectClass *g_object_class = G_OBJECT_CLASS (klass);
GimpObjectClass *gimp_object_class = GIMP_OBJECT_CLASS (klass);
GObjectClass *g_object_class = G_OBJECT_CLASS (klass);
g_object_class->constructed = gimp_filtered_container_constructed;
g_object_class->dispose = gimp_filtered_container_dispose;
g_object_class->set_property = gimp_filtered_container_set_property;
g_object_class->get_property = gimp_filtered_container_get_property;
gimp_object_class->get_memsize = gimp_filtered_container_get_memsize;
klass->tag_count_changed = gimp_filtered_container_tag_count_changed;
gimp_filtered_container_signals[TAG_COUNT_CHANGED] =
g_signal_new ("tag-count-changed",
GIMP_TYPE_FILTERED_CONTAINER,
G_SIGNAL_RUN_LAST,
G_STRUCT_OFFSET (GimpFilteredContainerClass, tag_count_changed),
NULL, NULL,
gimp_marshal_VOID__INT,
G_TYPE_NONE, 1,
G_TYPE_INT);
g_object_class->constructed = gimp_filtered_container_constructed;
g_object_class->dispose = gimp_filtered_container_dispose;
g_object_class->set_property = gimp_filtered_container_set_property;
g_object_class->get_property = gimp_filtered_container_get_property;
g_object_class_install_property (g_object_class, PROP_SRC_CONTAINER,
g_param_spec_object ("src-container",
@ -134,15 +82,23 @@ gimp_filtered_container_class_init (GimpFilteredContainerClass *klass)
GIMP_TYPE_CONTAINER,
GIMP_PARAM_READWRITE |
G_PARAM_CONSTRUCT_ONLY));
g_object_class_install_property (g_object_class, PROP_FILTER_FUNC,
g_param_spec_pointer ("filter-func",
NULL, NULL,
GIMP_PARAM_READWRITE |
G_PARAM_CONSTRUCT_ONLY));
g_object_class_install_property (g_object_class, PROP_FILTER_DATA,
g_param_spec_pointer ("filter-data",
NULL, NULL,
GIMP_PARAM_READWRITE |
G_PARAM_CONSTRUCT_ONLY));
}
static void
gimp_filtered_container_init (GimpFilteredContainer *filtered_container)
{
filtered_container->src_container = NULL;
filtered_container->filter = NULL;
filtered_container->tag_ref_counts = NULL;
filtered_container->tag_count = 0;
}
static void
@ -153,14 +109,11 @@ gimp_filtered_container_constructed (GObject *object)
if (G_OBJECT_CLASS (parent_class)->constructed)
G_OBJECT_CLASS (parent_class)->constructed (object);
filtered_container->tag_ref_counts =
g_hash_table_new ((GHashFunc) gimp_tag_get_hash,
(GEqualFunc) gimp_tag_equals);
g_assert (GIMP_IS_CONTAINER (filtered_container->src_container));
g_assert (filtered_container->filter_func != NULL);
gimp_container_foreach (filtered_container->src_container,
(GFunc) gimp_filtered_container_tagged_item_added,
filtered_container);
gimp_filtered_container_filter (filtered_container);
if (! gimp_container_frozen (filtered_container->src_container))
gimp_filtered_container_filter (filtered_container);
}
static void
@ -168,12 +121,6 @@ gimp_filtered_container_dispose (GObject *object)
{
GimpFilteredContainer *filtered_container = GIMP_FILTERED_CONTAINER (object);
if (filtered_container->tag_ref_counts)
{
g_hash_table_unref (filtered_container->tag_ref_counts);
filtered_container->tag_ref_counts = NULL;
}
if (filtered_container->src_container)
{
g_signal_handlers_disconnect_by_func (filtered_container->src_container,
@ -223,6 +170,14 @@ gimp_filtered_container_set_property (GObject *object,
filtered_container);
break;
case PROP_FILTER_FUNC:
filtered_container->filter_func = g_value_get_pointer (value);
break;
case PROP_FILTER_DATA:
filtered_container->filter_data = g_value_get_pointer (value);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
break;
@ -243,24 +198,20 @@ gimp_filtered_container_get_property (GObject *object,
g_value_set_object (value, filtered_container->src_container);
break;
case PROP_FILTER_FUNC:
g_value_set_pointer (value, filtered_container->filter_func);
break;
case PROP_FILTER_DATA:
g_value_set_pointer (value, filtered_container->filter_data);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
break;
}
}
static gint64
gimp_filtered_container_get_memsize (GimpObject *object,
gint64 *gui_size)
{
gint64 memsize = 0;
/* FIXME take members into account */
return memsize + GIMP_OBJECT_CLASS (parent_class)->get_memsize (object,
gui_size);
}
/**
* gimp_filtered_container_new:
* @src_container: container to be filtered.
@ -273,164 +224,47 @@ gimp_filtered_container_get_memsize (GimpObject *object,
* Return value: a new #GimpFilteredContainer object.
**/
GimpContainer *
gimp_filtered_container_new (GimpContainer *src_container,
GCompareFunc sort_func)
gimp_filtered_container_new (GimpContainer *src_container,
GimpObjectFilterFunc filter_func,
gpointer filter_data)
{
GimpFilteredContainer *filtered_container;
GType children_type;
GType children_type;
GCompareFunc sort_func;
g_return_val_if_fail (GIMP_IS_CONTAINER (src_container), NULL);
g_return_val_if_fail (GIMP_IS_LIST (src_container), NULL);
g_return_val_if_fail (filter_func != NULL, NULL);
children_type = gimp_container_get_children_type (src_container);
sort_func = GIMP_LIST (src_container)->sort_func;
filtered_container = g_object_new (GIMP_TYPE_FILTERED_CONTAINER,
"sort-func", sort_func,
"children-type", children_type,
"policy", GIMP_CONTAINER_POLICY_WEAK,
"unique-names", FALSE,
"src-container", src_container,
NULL);
return GIMP_CONTAINER (filtered_container);
}
/**
* gimp_filtered_container_set_filter:
* @filtered_container: a #GimpFilteredContainer object.
* @tags: list of #GimpTag objects.
*
* Sets list of tags to be used for filtering. Only objects which have all of
* the tags assigned match filtering criteria.
**/
void
gimp_filtered_container_set_filter (GimpFilteredContainer *filtered_container,
GList *tags)
{
g_return_if_fail (GIMP_IS_FILTERED_CONTAINER (filtered_container));
filtered_container->filter = tags;
gimp_container_freeze (GIMP_CONTAINER (filtered_container));
gimp_filtered_container_filter (filtered_container);
gimp_container_thaw (GIMP_CONTAINER (filtered_container));
}
/**
* gimp_filtered_container_get_filter:
* @filtered_container: a #GimpFilteredContainer object.
*
* Returns current tag filter. Tag filter is a list of GimpTag objects, which
* must be contained by each object matching filter criteria.
*
* Return value: a list of GimpTag objects used as filter. This value should
* not be modified or freed.
**/
const GList *
gimp_filtered_container_get_filter (GimpFilteredContainer *filtered_container)
{
g_return_val_if_fail (GIMP_IS_FILTERED_CONTAINER (filtered_container), NULL);
return filtered_container->filter;
}
static gboolean
gimp_filtered_container_object_matches (GimpFilteredContainer *filtered_container,
GimpObject *object)
{
GList *filter_tag;
GList *object_tag;
filter_tag = filtered_container->filter;
while (filter_tag)
{
if (! filter_tag->data)
{
/* invalid tag - does not match */
return FALSE;
}
object_tag = gimp_tagged_get_tags (GIMP_TAGGED (object));
while (object_tag)
{
if (gimp_tag_equals (GIMP_TAG (object_tag->data),
GIMP_TAG (filter_tag->data)))
{
/* found match for the tag */
break;
}
object_tag = g_list_next (object_tag);
}
if (! object_tag)
{
/* match for the tag was not found.
* since query is of type AND, it whole fails. */
return FALSE;
}
filter_tag = g_list_next (filter_tag);
}
return TRUE;
}
static void
gimp_filtered_container_check_needs_remove (GimpObject *object,
MatchParams *match_params)
{
if (! gimp_filtered_container_object_matches (match_params->filtered_container,
object))
{
match_params->items_to_remove = g_list_prepend (match_params->items_to_remove,
object);
}
}
static void
gimp_filtered_container_check_needs_add (GimpObject *object,
MatchParams *match_params)
{
if (gimp_filtered_container_object_matches (match_params->filtered_container,
object) &&
! gimp_container_have (GIMP_CONTAINER (match_params->filtered_container),
object))
{
match_params->items_to_add = g_list_prepend (match_params->items_to_add,
object);
}
return g_object_new (GIMP_TYPE_FILTERED_CONTAINER,
"sort-func", sort_func,
"children-type", children_type,
"policy", GIMP_CONTAINER_POLICY_WEAK,
"unique-names", FALSE,
"src-container", src_container,
"filter-func", filter_func,
"filter-data", filter_data,
NULL);
}
static void
gimp_filtered_container_filter (GimpFilteredContainer *filtered_container)
{
MatchParams match_params;
GList *list;
GList *list;
match_params.filtered_container = filtered_container;
match_params.items_to_add = NULL;
match_params.items_to_remove = NULL;
gimp_container_foreach (GIMP_CONTAINER (filtered_container),
(GFunc) gimp_filtered_container_check_needs_remove,
&match_params);
gimp_container_foreach (GIMP_CONTAINER (filtered_container->src_container),
(GFunc) gimp_filtered_container_check_needs_add,
&match_params);
for (list = match_params.items_to_remove; list; list = g_list_next (list))
for (list = GIMP_LIST (filtered_container->src_container)->list;
list;
list = g_list_next (list))
{
gimp_container_remove (GIMP_CONTAINER (filtered_container),
GIMP_OBJECT (list->data));
}
GimpObject *child = list->data;
for (list = match_params.items_to_add; list; list = g_list_next (list))
{
gimp_container_add (GIMP_CONTAINER (filtered_container),
GIMP_OBJECT (list->data));
if (filtered_container->filter_func (child,
filtered_container->filter_data))
{
gimp_container_add (GIMP_CONTAINER (filtered_container), child);
}
}
g_list_free (match_params.items_to_add);
g_list_free (match_params.items_to_remove);
}
static void
@ -438,10 +272,8 @@ gimp_filtered_container_src_add (GimpContainer *src_container,
GimpObject *obj,
GimpFilteredContainer *filtered_container)
{
gimp_filtered_container_tagged_item_added (GIMP_TAGGED (obj),
filtered_container);
if (! gimp_container_frozen (src_container))
if (! gimp_container_frozen (src_container) &&
filtered_container->filter_func (obj, filtered_container->filter_data))
{
gimp_container_add (GIMP_CONTAINER (filtered_container), obj);
}
@ -452,11 +284,8 @@ gimp_filtered_container_src_remove (GimpContainer *src_container,
GimpObject *obj,
GimpFilteredContainer *filtered_container)
{
gimp_filtered_container_tagged_item_removed (GIMP_TAGGED (obj),
filtered_container);
if (! gimp_container_frozen (src_container) &&
gimp_container_have (GIMP_CONTAINER (filtered_container), obj))
filtered_container->filter_func (obj, filtered_container->filter_data))
{
gimp_container_remove (GIMP_CONTAINER (filtered_container), obj);
}
@ -477,122 +306,3 @@ gimp_filtered_container_src_thaw (GimpContainer *src_container,
gimp_filtered_container_filter (filtered_container);
gimp_container_thaw (GIMP_CONTAINER (filtered_container));
}
static void
gimp_filtered_container_tagged_item_added (GimpTagged *tagged,
GimpFilteredContainer *filtered_container)
{
GList *list;
for (list = gimp_tagged_get_tags (tagged); list; list = g_list_next (list))
{
gimp_filtered_container_tag_added (tagged,
list->data,
filtered_container);
}
g_signal_connect (tagged, "tag-added",
G_CALLBACK (gimp_filtered_container_tag_added),
filtered_container);
g_signal_connect (tagged, "tag-removed",
G_CALLBACK (gimp_filtered_container_tag_removed),
filtered_container);
}
static void
gimp_filtered_container_tagged_item_removed (GimpTagged *tagged,
GimpFilteredContainer *filtered_container)
{
GList *list;
g_signal_handlers_disconnect_by_func (tagged,
gimp_filtered_container_tag_added,
filtered_container);
g_signal_handlers_disconnect_by_func (tagged,
gimp_filtered_container_tag_removed,
filtered_container);
for (list = gimp_tagged_get_tags (tagged); list; list = g_list_next (list))
{
gimp_filtered_container_tag_removed (tagged,
GIMP_TAG (list->data),
filtered_container);
}
}
static void
gimp_filtered_container_tag_added (GimpTagged *tagged,
GimpTag *tag,
GimpFilteredContainer *filtered_container)
{
gint ref_count;
ref_count = GPOINTER_TO_INT (g_hash_table_lookup (filtered_container->tag_ref_counts,
tag));
ref_count++;
g_hash_table_insert (filtered_container->tag_ref_counts,
tag, GINT_TO_POINTER (ref_count));
if (ref_count == 1)
{
filtered_container->tag_count++;
g_signal_emit (filtered_container,
gimp_filtered_container_signals[TAG_COUNT_CHANGED], 0,
filtered_container->tag_count);
}
}
static void
gimp_filtered_container_tag_removed (GimpTagged *tagged,
GimpTag *tag,
GimpFilteredContainer *filtered_container)
{
gint ref_count;
ref_count = GPOINTER_TO_INT (g_hash_table_lookup (filtered_container->tag_ref_counts,
tag));
ref_count--;
if (ref_count > 0)
{
g_hash_table_insert (filtered_container->tag_ref_counts,
tag, GINT_TO_POINTER (ref_count));
}
else
{
if (g_hash_table_remove (filtered_container->tag_ref_counts, tag))
{
filtered_container->tag_count--;
g_signal_emit (filtered_container,
gimp_filtered_container_signals[TAG_COUNT_CHANGED], 0,
filtered_container->tag_count);
}
}
}
static void
gimp_filtered_container_tag_count_changed (GimpFilteredContainer *container,
gint tag_count)
{
}
/**
* gimp_filtered_container_get_tag_count:
* @container: a #GimpFilteredContainer object.
*
* Get number of distinct tags that are currently assigned to all
* objects in the container. The count is independent of currently
* used filter, it is provided for all available objects (ie. empty
* filter).
*
* Return value: number of distinct tags assigned to all objects in the
* container.
**/
gint
gimp_filtered_container_get_tag_count (GimpFilteredContainer *container)
{
g_return_val_if_fail (GIMP_IS_FILTERED_CONTAINER (container), 0);
return container->tag_count;
}
#endif

28
app/core/gimpfilteredcontainer.h
View File

@ -1,9 +1,9 @@
#if 0
/* GIMP - The GNU Image Manipulation Program
* Copyright (C) 1995-1997 Spencer Kimball and Peter Mattis
*
* gimpfilteredcontainer.h
* Copyright (C) 2008 Aurimas Juška <aurisj@svn.gnome.org>
* 2011 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
@ -38,34 +38,24 @@ typedef struct _GimpFilteredContainerClass GimpFilteredContainerClass;
struct _GimpFilteredContainer
{
GimpList parent_instance;
GimpList parent_instance;
GimpContainer *src_container;
GList *filter;
GHashTable *tag_ref_counts;
gint tag_count;
GimpContainer *src_container;
GimpObjectFilterFunc filter_func;
gpointer filter_data;
};
struct _GimpFilteredContainerClass
{
GimpContainerClass parent_class;
void (* tag_count_changed) (GimpFilteredContainer *container,
gint count);
};
GType gimp_filtered_container_get_type (void) G_GNUC_CONST;
GType gimp_filtered_container_get_type (void) G_GNUC_CONST;
GimpContainer * gimp_filtered_container_new (GimpContainer *src_container,
GCompareFunc sort_func);
void gimp_filtered_container_set_filter (GimpFilteredContainer *filtered_container,
GList *tags);
const GList * gimp_filtered_container_get_filter (GimpFilteredContainer *filtered_container);
gint gimp_filtered_container_get_tag_count (GimpFilteredContainer *container);
GimpContainer * gimp_filtered_container_new (GimpContainer *src_container,
GimpObjectFilterFunc filter_func,
gpointer filter_data);
#endif /* __GIMP_FILTERED_CONTAINER_H__ */
#endif