gtk2/gtk/gtktexttagtable.c
Havoc Pennington a002196773 fix other typo
2001-06-14  Havoc Pennington  <hp@redhat.com>

	* gtk/gtkwindow.c (window_group_cleanup_grabs): fix other typo

	* gtk/gtkwidget.c (gtk_widget_propagate_state): fix typo

	* gtk/gtktextbtree.c: don't leak node data all over the place.

	* demos/gtk-demo/main.c (main): create fontify tags for the right
	buffer

	* gtk/gtktextbuffer.c, gtk/gtktexttagtable.c: enhance docs
	to mention tags in the same table can't have the same name,
	suggested by Skip Montanaro

2001-06-11  Havoc Pennington  <hp@redhat.com>

	* gtk/gtktexttagtable.c (gtk_text_tag_table_add): improve warning
	for trying to add two tags with same name to the tag table

	* demos/gtk-demo/main.c (main): fix colors ;-)
2001-06-14 22:25:23 +00:00

370 lines
9.3 KiB
C

#include "gtktexttagtable.h"
#include "gtksignal.h"
#include <stdlib.h>
enum {
TAG_CHANGED,
TAG_ADDED,
TAG_REMOVED,
LAST_SIGNAL
};
enum {
LAST_ARG
};
static void gtk_text_tag_table_init (GtkTextTagTable *table);
static void gtk_text_tag_table_class_init (GtkTextTagTableClass *klass);
static void gtk_text_tag_table_finalize (GObject *object);
static void gtk_text_tag_table_set_property (GObject *object,
guint prop_id,
const GValue *value,
GParamSpec *pspec);
static void gtk_text_tag_table_get_property (GObject *object,
guint prop_id,
GValue *value,
GParamSpec *pspec);
static GObjectClass *parent_class = NULL;
static guint signals[LAST_SIGNAL] = { 0 };
GType
gtk_text_tag_table_get_type (void)
{
static GType our_type = 0;
if (our_type == 0)
{
static const GTypeInfo our_info =
{
sizeof (GtkTextTagTableClass),
(GBaseInitFunc) NULL,
(GBaseFinalizeFunc) NULL,
(GClassInitFunc) gtk_text_tag_table_class_init,
NULL, /* class_finalize */
NULL, /* class_data */
sizeof (GtkTextTagTable),
0, /* n_preallocs */
(GInstanceInitFunc) gtk_text_tag_table_init
};
our_type = g_type_register_static (G_TYPE_OBJECT,
"GtkTextTagTable",
&our_info,
0);
}
return our_type;
}
static void
gtk_text_tag_table_class_init (GtkTextTagTableClass *klass)
{
GObjectClass *object_class = G_OBJECT_CLASS (klass);
parent_class = g_type_class_peek_parent (klass);
object_class->set_property = gtk_text_tag_table_set_property;
object_class->get_property = gtk_text_tag_table_get_property;
object_class->finalize = gtk_text_tag_table_finalize;
signals[TAG_CHANGED] =
g_signal_newc ("tag_changed",
G_OBJECT_CLASS_TYPE (object_class),
G_SIGNAL_RUN_LAST,
G_STRUCT_OFFSET (GtkTextTagTableClass, tag_changed),
NULL, NULL,
gtk_marshal_VOID__OBJECT_BOOLEAN,
G_TYPE_NONE,
2,
G_TYPE_OBJECT,
G_TYPE_BOOLEAN);
signals[TAG_ADDED] =
g_signal_newc ("tag_added",
GTK_CLASS_TYPE (object_class),
G_SIGNAL_RUN_LAST,
G_STRUCT_OFFSET (GtkTextTagTableClass, tag_added),
NULL, NULL,
gtk_marshal_VOID__OBJECT,
GTK_TYPE_NONE,
1,
G_TYPE_OBJECT);
signals[TAG_REMOVED] =
g_signal_newc ("tag_removed",
GTK_CLASS_TYPE (object_class),
G_SIGNAL_RUN_LAST,
G_STRUCT_OFFSET (GtkTextTagTableClass, tag_removed),
NULL, NULL,
gtk_marshal_VOID__OBJECT,
GTK_TYPE_NONE,
1,
G_TYPE_OBJECT);
}
void
gtk_text_tag_table_init (GtkTextTagTable *table)
{
table->hash = g_hash_table_new (g_str_hash, g_str_equal);
}
/**
* gtk_text_tag_table_new:
*
* Creates a new #GtkTextTagTable. The table contains no tags by
* default.
*
* Return value: a new #GtkTextTagTable
**/
GtkTextTagTable*
gtk_text_tag_table_new (void)
{
GtkTextTagTable *table;
table = GTK_TEXT_TAG_TABLE (g_object_new (gtk_text_tag_table_get_type (), NULL));
return table;
}
static void
foreach_unref (GtkTextTag *tag, gpointer data)
{
/* We don't want to emit the remove signal here; so we just unparent
* and unref the tag.
*/
tag->table = NULL;
g_object_unref (G_OBJECT (tag));
}
static void
gtk_text_tag_table_finalize (GObject *object)
{
GtkTextTagTable *table;
table = GTK_TEXT_TAG_TABLE (object);
gtk_text_tag_table_foreach (table, foreach_unref, NULL);
g_hash_table_destroy (table->hash);
g_slist_free (table->anonymous);
(* G_OBJECT_CLASS (parent_class)->finalize) (object);
}
static void
gtk_text_tag_table_set_property (GObject *object,
guint prop_id,
const GValue *value,
GParamSpec *pspec)
{
GtkTextTagTable *table;
table = GTK_TEXT_TAG_TABLE (object);
switch (prop_id)
{
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
gtk_text_tag_table_get_property (GObject *object,
guint prop_id,
GValue *value,
GParamSpec *pspec)
{
GtkTextTagTable *table;
table = GTK_TEXT_TAG_TABLE (object);
switch (prop_id)
{
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
/**
* gtk_text_tag_table_add:
* @table: a #GtkTextTagTable
* @tag: a #GtkTextTag
*
* Add a tag to the table. The tag is assigned the highest priority
* in the table.
*
* @tag must not be in a tag table already, and may not have
* the same name as an already-added tag.
**/
void
gtk_text_tag_table_add (GtkTextTagTable *table,
GtkTextTag *tag)
{
guint size;
g_return_if_fail (GTK_IS_TEXT_TAG_TABLE (table));
g_return_if_fail (GTK_IS_TEXT_TAG (tag));
g_return_if_fail (tag->table == NULL);
if (tag->name && g_hash_table_lookup (table->hash, tag->name))
{
g_warning ("A tag named '%s' is already in the tag table.",
tag->name);
return;
}
g_object_ref (G_OBJECT (tag));
if (tag->name)
g_hash_table_insert (table->hash, tag->name, tag);
else
{
table->anonymous = g_slist_prepend (table->anonymous, tag);
table->anon_count += 1;
}
tag->table = table;
/* We get the highest tag priority, as the most-recently-added
tag. Note that we do NOT use gtk_text_tag_set_priority,
as it assumes the tag is already in the table. */
size = gtk_text_tag_table_size (table);
g_assert (size > 0);
tag->priority = size - 1;
g_signal_emit (G_OBJECT (table), signals[TAG_ADDED], 0, tag);
}
/**
* gtk_text_tag_table_lookup:
* @table: a #GtkTextTagTable
* @name: name of a tag
*
* Look up a named tag.
*
* Return value: The tag, or %NULL if none by that name is in the table.
**/
GtkTextTag*
gtk_text_tag_table_lookup (GtkTextTagTable *table,
const gchar *name)
{
g_return_val_if_fail (GTK_IS_TEXT_TAG_TABLE (table), NULL);
g_return_val_if_fail (name != NULL, NULL);
return g_hash_table_lookup (table->hash, name);
}
/**
* gtk_text_tag_table_remove:
* @table: a #GtkTextTagTable
* @tag: a #GtkTextTag
*
* Remove a tag from the table. This will remove the table's
* reference to the tag, so be careful - the tag will end
* up destroyed if you don't have a reference to it.
**/
void
gtk_text_tag_table_remove (GtkTextTagTable *table,
GtkTextTag *tag)
{
g_return_if_fail (GTK_IS_TEXT_TAG_TABLE (table));
g_return_if_fail (GTK_IS_TEXT_TAG (tag));
g_return_if_fail (tag->table == table);
/* Set ourselves to the highest priority; this means
when we're removed, there won't be any gaps in the
priorities of the tags in the table. */
gtk_text_tag_set_priority (tag, gtk_text_tag_table_size (table) - 1);
tag->table = NULL;
if (tag->name)
g_hash_table_remove (table->hash, tag->name);
else
{
table->anonymous = g_slist_remove (table->anonymous, tag);
table->anon_count -= 1;
}
g_signal_emit (G_OBJECT (table), signals[TAG_REMOVED], 0, tag);
g_object_unref (G_OBJECT (tag));
}
struct ForeachData
{
GtkTextTagTableForeach func;
gpointer data;
};
static void
hash_foreach (gpointer key, gpointer value, gpointer data)
{
struct ForeachData *fd = data;
g_return_if_fail (GTK_IS_TEXT_TAG (value));
(* fd->func) (value, fd->data);
}
static void
list_foreach (gpointer data, gpointer user_data)
{
struct ForeachData *fd = user_data;
g_return_if_fail (GTK_IS_TEXT_TAG (data));
(* fd->func) (data, fd->data);
}
/**
* gtk_text_tag_table_foreach:
* @table: a #GtkTextTagTable
* @func: a function to call on each tag
* @data: user data
*
* Calls @func on each tag in @table, with user data @data.
*
**/
void
gtk_text_tag_table_foreach (GtkTextTagTable *table,
GtkTextTagTableForeach func,
gpointer data)
{
struct ForeachData d;
g_return_if_fail (GTK_IS_TEXT_TAG_TABLE (table));
g_return_if_fail (func != NULL);
d.func = func;
d.data = data;
g_hash_table_foreach (table->hash, hash_foreach, &d);
g_slist_foreach (table->anonymous, list_foreach, &d);
}
/**
* gtk_text_tag_table_size:
* @table: a #GtkTextTagTable
*
* Returns the size of the table (number of tags)
*
* Return value: number of tags in @table
**/
gint
gtk_text_tag_table_size (GtkTextTagTable *table)
{
g_return_val_if_fail (GTK_IS_TEXT_TAG_TABLE (table), 0);
return g_hash_table_size (table->hash) + table->anon_count;
}