AuroraMiddleware/gtk2
1
0
Fork 0
forked from AuroraMiddleware/gtk
Code Issues Pull Requests Projects Releases Wiki Activity
778be3e8e9
gtk2/gtk/gtkaccelgroup.c
Matthias Clasen b8edde55e2 Add some docs 
svn path=/trunk/; revision=20381
2008-06-13 17:40:17 +00:00

1324 lines
38 KiB
C
Raw Blame History

/* GTK - The GIMP Toolkit
* Copyright (C) 1998, 2001 Tim Janik
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
/*
* Modified by the GTK+ Team and others 1997-2000. See the AUTHORS
* file for a list of people on the GTK+ Team. See the ChangeLog
* files for a list of changes. These files are distributed with
* GTK+ at ftp://ftp.gtk.org/pub/gtk/.
*/
#include <config.h>
#include <string.h>
#include <stdlib.h>
#include "gtkaccelgroup.h"
#include "gtkaccellabel.h" /* For _gtk_accel_label_class_get_accelerator_label */
#include "gtkaccelmap.h"
#include "gtkintl.h"
#include "gtkmain.h" /* For _gtk_boolean_handled_accumulator */
#include "gdk/gdkkeysyms.h"
#include "gtkmarshalers.h"
#include "gtkalias.h"
/* --- prototypes --- */
static void gtk_accel_group_finalize (GObject *object);
static void accel_closure_invalidate (gpointer data,
GClosure *closure);
/* --- variables --- */
static guint signal_accel_activate = 0;
static guint signal_accel_changed = 0;
static guint quark_acceleratable_groups = 0;
static guint default_accel_mod_mask = (GDK_SHIFT_MASK |
GDK_CONTROL_MASK |
GDK_MOD1_MASK |
GDK_SUPER_MASK |
GDK_HYPER_MASK |
GDK_META_MASK);
G_DEFINE_TYPE (GtkAccelGroup, gtk_accel_group, G_TYPE_OBJECT)
/* --- functions --- */
static void
gtk_accel_group_class_init (GtkAccelGroupClass *class)
{
GObjectClass *object_class = G_OBJECT_CLASS (class);
quark_acceleratable_groups = g_quark_from_static_string ("gtk-acceleratable-accel-groups");
object_class->finalize = gtk_accel_group_finalize;
class->accel_changed = NULL;
/**
* GtkAccelGroup::accel-activate:
* @accel_group: the #GtkAccelGroup which received the signal
* @acceleratable: the object on which the accelerator was activated
* @keyval: the accelerator keyval
* @modifier: the modifier combination of the accelerator
*
* The accel-activate signal is an implementation detail of
* #GtkAccelGroup and not meant to be used by applications.
*
* Returns: %TRUE if the accelerator was activated
*/
signal_accel_activate =
g_signal_new (I_("accel_activate"),
G_OBJECT_CLASS_TYPE (class),
G_SIGNAL_DETAILED,
0,
_gtk_boolean_handled_accumulator, NULL,
_gtk_marshal_BOOLEAN__OBJECT_UINT_FLAGS,
G_TYPE_BOOLEAN, 3,
G_TYPE_OBJECT,
G_TYPE_UINT,
GDK_TYPE_MODIFIER_TYPE);
/**
* GtkAccelGroup::accel-changed:
* @accel_group: the #GtkAccelGroup which received the signal
* @keyval: the accelerator keyval
* @modifier: the modifier combination of the accelerator
* @accel_closure: the #GClosure of the accelerator
*
* The accel-changed signal is emitted when a #GtkAccelGroupEntry
* is added to or removed from the accel group.
*
* Widgets like #GtkAccelLabel which display an associated
* accelerator should connect to this signal, and rebuild
* their visual representation if the @accel_closure is theirs.
*/
signal_accel_changed =
g_signal_new (I_("accel_changed"),
G_OBJECT_CLASS_TYPE (class),
G_SIGNAL_RUN_FIRST | G_SIGNAL_DETAILED,
G_STRUCT_OFFSET (GtkAccelGroupClass, accel_changed),
NULL, NULL,
_gtk_marshal_VOID__UINT_FLAGS_BOXED,
G_TYPE_NONE, 3,
G_TYPE_UINT,
GDK_TYPE_MODIFIER_TYPE,
G_TYPE_CLOSURE);
}
static void
gtk_accel_group_finalize (GObject *object)
{
GtkAccelGroup *accel_group = GTK_ACCEL_GROUP (object);
guint i;
for (i = 0; i < accel_group->n_accels; i++)
{
GtkAccelGroupEntry *entry = &accel_group->priv_accels[i];
if (entry->accel_path_quark)
{
const gchar *accel_path = g_quark_to_string (entry->accel_path_quark);
_gtk_accel_map_remove_group (accel_path, accel_group);
}
g_closure_remove_invalidate_notifier (entry->closure, accel_group, accel_closure_invalidate);
}
g_free (accel_group->priv_accels);
G_OBJECT_CLASS (gtk_accel_group_parent_class)->finalize (object);
}
static void
gtk_accel_group_init (GtkAccelGroup *accel_group)
{
accel_group->lock_count = 0;
accel_group->modifier_mask = gtk_accelerator_get_default_mod_mask ();
accel_group->acceleratables = NULL;
accel_group->n_accels = 0;
accel_group->priv_accels = NULL;
}
/**
* gtk_accel_group_new:
* @returns: a new #GtkAccelGroup object
*
* Creates a new #GtkAccelGroup.
*/
GtkAccelGroup*
gtk_accel_group_new (void)
{
return g_object_new (GTK_TYPE_ACCEL_GROUP, NULL);
}
static void
accel_group_weak_ref_detach (GSList *free_list,
GObject *stale_object)
{
GSList *slist;
for (slist = free_list; slist; slist = slist->next)
{
GtkAccelGroup *accel_group;
accel_group = slist->data;
accel_group->acceleratables = g_slist_remove (accel_group->acceleratables, stale_object);
g_object_unref (accel_group);
}
g_slist_free (free_list);
g_object_set_qdata (stale_object, quark_acceleratable_groups, NULL);
}
void
_gtk_accel_group_attach (GtkAccelGroup *accel_group,
GObject *object)
{
GSList *slist;
g_return_if_fail (GTK_IS_ACCEL_GROUP (accel_group));
g_return_if_fail (G_IS_OBJECT (object));
g_return_if_fail (g_slist_find (accel_group->acceleratables, object) == NULL);
g_object_ref (accel_group);
accel_group->acceleratables = g_slist_prepend (accel_group->acceleratables, object);
slist = g_object_get_qdata (object, quark_acceleratable_groups);
if (slist)
g_object_weak_unref (object,
(GWeakNotify) accel_group_weak_ref_detach,
slist);
slist = g_slist_prepend (slist, accel_group);
g_object_set_qdata (object, quark_acceleratable_groups, slist);
g_object_weak_ref (object,
(GWeakNotify) accel_group_weak_ref_detach,
slist);
}
void
_gtk_accel_group_detach (GtkAccelGroup *accel_group,
GObject *object)
{
GSList *slist;
g_return_if_fail (GTK_IS_ACCEL_GROUP (accel_group));
g_return_if_fail (G_IS_OBJECT (object));
g_return_if_fail (g_slist_find (accel_group->acceleratables, object) != NULL);
accel_group->acceleratables = g_slist_remove (accel_group->acceleratables, object);
slist = g_object_get_qdata (object, quark_acceleratable_groups);
g_object_weak_unref (object,
(GWeakNotify) accel_group_weak_ref_detach,
slist);
slist = g_slist_remove (slist, accel_group);
g_object_set_qdata (object, quark_acceleratable_groups, slist);
if (slist)
g_object_weak_ref (object,
(GWeakNotify) accel_group_weak_ref_detach,
slist);
g_object_unref (accel_group);
}
/**
* gtk_accel_groups_from_object:
* @object: a #GObject, usually a #GtkWindow
* @returns: a list of all accel groups which are attached to @object
*
* Gets a list of all accel groups which are attached to @object.
*/
GSList*
gtk_accel_groups_from_object (GObject *object)
{
g_return_val_if_fail (G_IS_OBJECT (object), NULL);
return g_object_get_qdata (object, quark_acceleratable_groups);
}
/**
* gtk_accel_group_find:
* @accel_group: a #GtkAccelGroup
* @find_func: a function to filter the entries of @accel_group with
* @data: data to pass to @find_func
* @returns: the key of the first entry passing @find_func. The key is
* owned by GTK+ and must not be freed.
*
* Finds the first entry in an accelerator group for which
* @find_func returns %TRUE and returns its #GtkAccelKey.
*
*/
GtkAccelKey*
gtk_accel_group_find (GtkAccelGroup *accel_group,
GtkAccelGroupFindFunc find_func,
gpointer data)
{
GtkAccelKey *key = NULL;
guint i;
g_return_val_if_fail (GTK_IS_ACCEL_GROUP (accel_group), NULL);
g_return_val_if_fail (find_func != NULL, NULL);
g_object_ref (accel_group);
for (i = 0; i < accel_group->n_accels; i++)
if (find_func (&accel_group->priv_accels[i].key,
accel_group->priv_accels[i].closure,
data))
{
key = &accel_group->priv_accels[i].key;
break;
}
g_object_unref (accel_group);
return key;
}
/**
* gtk_accel_group_lock:
* @accel_group: a #GtkAccelGroup
*
* Locks the given accelerator group.
*
* Locking an acelerator group prevents the accelerators contained
* within it to be changed during runtime. Refer to
* gtk_accel_map_change_entry() about runtime accelerator changes.
*
* If called more than once, @accel_group remains locked until
* gtk_accel_group_unlock() has been called an equivalent number
* of times.
*/
void
gtk_accel_group_lock (GtkAccelGroup *accel_group)
{
g_return_if_fail (GTK_IS_ACCEL_GROUP (accel_group));
accel_group->lock_count += 1;
}
/**
* gtk_accel_group_unlock:
* @accel_group: a #GtkAccelGroup
*
* Undoes the last call to gtk_accel_group_lock() on this @accel_group.
*/
void
gtk_accel_group_unlock (GtkAccelGroup *accel_group)
{
g_return_if_fail (GTK_IS_ACCEL_GROUP (accel_group));
g_return_if_fail (accel_group->lock_count > 0);
accel_group->lock_count -= 1;
}
static void
accel_closure_invalidate (gpointer data,
GClosure *closure)
{
GtkAccelGroup *accel_group = GTK_ACCEL_GROUP (data);
gtk_accel_group_disconnect (accel_group, closure);
}
static int
bsearch_compare_accels (const void *d1,
const void *d2)
{
const GtkAccelGroupEntry *entry1 = d1;
const GtkAccelGroupEntry *entry2 = d2;
if (entry1->key.accel_key == entry2->key.accel_key)
return entry1->key.accel_mods < entry2->key.accel_mods ? -1 : entry1->key.accel_mods > entry2->key.accel_mods;
else
return entry1->key.accel_key < entry2->key.accel_key ? -1 : 1;
}
static void
quick_accel_add (GtkAccelGroup *accel_group,
guint accel_key,
GdkModifierType accel_mods,
GtkAccelFlags accel_flags,
GClosure *closure,
GQuark path_quark)
{
guint pos, i = accel_group->n_accels++;
GtkAccelGroupEntry key;
/* find position */
key.key.accel_key = accel_key;
key.key.accel_mods = accel_mods;
for (pos = 0; pos < i; pos++)
if (bsearch_compare_accels (&key, accel_group->priv_accels + pos) < 0)
break;
/* insert at position, ref closure */
accel_group->priv_accels = g_renew (GtkAccelGroupEntry, accel_group->priv_accels, accel_group->n_accels);
g_memmove (accel_group->priv_accels + pos + 1, accel_group->priv_accels + pos,
(i - pos) * sizeof (accel_group->priv_accels[0]));
accel_group->priv_accels[pos].key.accel_key = accel_key;
accel_group->priv_accels[pos].key.accel_mods = accel_mods;
accel_group->priv_accels[pos].key.accel_flags = accel_flags;
accel_group->priv_accels[pos].closure = g_closure_ref (closure);
accel_group->priv_accels[pos].accel_path_quark = path_quark;
g_closure_sink (closure);
/* handle closure invalidation and reverse lookups */
g_closure_add_invalidate_notifier (closure, accel_group, accel_closure_invalidate);
/* get accel path notification */
if (path_quark)
_gtk_accel_map_add_group (g_quark_to_string (path_quark), accel_group);
/* connect and notify changed */
if (accel_key)
{
gchar *accel_name = gtk_accelerator_name (accel_key, accel_mods);
GQuark accel_quark = g_quark_from_string (accel_name);
g_free (accel_name);
/* setup handler */
g_signal_connect_closure_by_id (accel_group, signal_accel_activate, accel_quark, closure, FALSE);
/* and notify */
g_signal_emit (accel_group, signal_accel_changed, accel_quark, accel_key, accel_mods, closure);
}
}
static void
quick_accel_remove (GtkAccelGroup *accel_group,
guint pos)
{
GQuark accel_quark = 0;
GtkAccelGroupEntry *entry = accel_group->priv_accels + pos;
guint accel_key = entry->key.accel_key;
GdkModifierType accel_mods = entry->key.accel_mods;
GClosure *closure = entry->closure;
/* quark for notification */
if (accel_key)
{
gchar *accel_name = gtk_accelerator_name (accel_key, accel_mods);
accel_quark = g_quark_from_string (accel_name);
g_free (accel_name);
}
/* clean up closure invalidate notification and disconnect */
g_closure_remove_invalidate_notifier (entry->closure, accel_group, accel_closure_invalidate);
if (accel_quark)
g_signal_handlers_disconnect_matched (accel_group,
G_SIGNAL_MATCH_ID | G_SIGNAL_MATCH_DETAIL | G_SIGNAL_MATCH_CLOSURE,
signal_accel_activate, accel_quark,
closure, NULL, NULL);
/* clean up accel path notification */
if (entry->accel_path_quark)
_gtk_accel_map_remove_group (g_quark_to_string (entry->accel_path_quark), accel_group);
/* physically remove */
accel_group->n_accels -= 1;
g_memmove (entry, entry + 1,
(accel_group->n_accels - pos) * sizeof (accel_group->priv_accels[0]));
/* and notify */
if (accel_quark)
g_signal_emit (accel_group, signal_accel_changed, accel_quark, accel_key, accel_mods, closure);
/* remove quick_accel_add() refcount */
g_closure_unref (closure);
}
static GtkAccelGroupEntry*
quick_accel_find (GtkAccelGroup *accel_group,
guint accel_key,
GdkModifierType accel_mods,
guint *count_p)
{
GtkAccelGroupEntry *entry;
GtkAccelGroupEntry key;
*count_p = 0;
if (!accel_group->n_accels)
return NULL;
key.key.accel_key = accel_key;
key.key.accel_mods = accel_mods;
entry = bsearch (&key, accel_group->priv_accels, accel_group->n_accels,
sizeof (accel_group->priv_accels[0]), bsearch_compare_accels);
if (!entry)
return NULL;
/* step back to the first member */
for (; entry > accel_group->priv_accels; entry--)
if (entry[-1].key.accel_key != accel_key ||
entry[-1].key.accel_mods != accel_mods)
break;
/* count equal members */
for (; entry + *count_p < accel_group->priv_accels + accel_group->n_accels; (*count_p)++)
if (entry[*count_p].key.accel_key != accel_key ||
entry[*count_p].key.accel_mods != accel_mods)
break;
return entry;
}
/**
* gtk_accel_group_connect:
* @accel_group: the accelerator group to install an accelerator in
* @accel_key: key value of the accelerator
* @accel_mods: modifier combination of the accelerator
* @accel_flags: a flag mask to configure this accelerator
* @closure: closure to be executed upon accelerator activation
*
* Installs an accelerator in this group. When @accel_group is being activated
* in response to a call to gtk_accel_groups_activate(), @closure will be
* invoked if the @accel_key and @accel_mods from gtk_accel_groups_activate()
* match those of this connection.
*
* The signature used for the @closure is that of #GtkAccelGroupActivate.
*
* Note that, due to implementation details, a single closure can only be
* connected to one accelerator group.
*/
void
gtk_accel_group_connect (GtkAccelGroup *accel_group,
guint accel_key,
GdkModifierType accel_mods,
GtkAccelFlags accel_flags,
GClosure *closure)
{
g_return_if_fail (GTK_IS_ACCEL_GROUP (accel_group));
g_return_if_fail (closure != NULL);
g_return_if_fail (accel_key > 0);
g_return_if_fail (gtk_accel_group_from_accel_closure (closure) == NULL);
g_object_ref (accel_group);
if (!closure->is_invalid)
quick_accel_add (accel_group,
gdk_keyval_to_lower (accel_key),
accel_mods, accel_flags, closure, 0);
g_object_unref (accel_group);
}
/**
* gtk_accel_group_connect_by_path:
* @accel_group: the accelerator group to install an accelerator in
* @accel_path: path used for determining key and modifiers.
* @closure: closure to be executed upon accelerator activation
*
* Installs an accelerator in this group, using an accelerator path to look
* up the appropriate key and modifiers (see gtk_accel_map_add_entry()).
* When @accel_group is being activated in response to a call to
* gtk_accel_groups_activate(), @closure will be invoked if the @accel_key and
* @accel_mods from gtk_accel_groups_activate() match the key and modifiers
* for the path.
*
* The signature used for the @closure is that of #GtkAccelGroupActivate.
*
* Note that @accel_path string will be stored in a #GQuark. Therefore, if you
* pass a static string, you can save some memory by interning it first with
* g_intern_static_string().
*/
void
gtk_accel_group_connect_by_path (GtkAccelGroup *accel_group,
const gchar *accel_path,
GClosure *closure)
{
guint accel_key = 0;
GdkModifierType accel_mods = 0;
GtkAccelKey key;
g_return_if_fail (GTK_IS_ACCEL_GROUP (accel_group));
g_return_if_fail (closure != NULL);
g_return_if_fail (_gtk_accel_path_is_valid (accel_path));
if (closure->is_invalid)
return;
g_object_ref (accel_group);
if (gtk_accel_map_lookup_entry (accel_path, &key))
{
accel_key = gdk_keyval_to_lower (key.accel_key);
accel_mods = key.accel_mods;
}
quick_accel_add (accel_group, accel_key, accel_mods, GTK_ACCEL_VISIBLE, closure,
g_quark_from_string (accel_path));
g_object_unref (accel_group);
}
/**
* gtk_accel_group_disconnect:
* @accel_group: the accelerator group to remove an accelerator from
* @closure: the closure to remove from this accelerator group
* @returns: %TRUE if the closure was found and got disconnected
*
* Removes an accelerator previously installed through
* gtk_accel_group_connect().
*/
gboolean
gtk_accel_group_disconnect (GtkAccelGroup *accel_group,
GClosure *closure)
{
guint i;
g_return_val_if_fail (GTK_IS_ACCEL_GROUP (accel_group), FALSE);
for (i = 0; i < accel_group->n_accels; i++)
if (accel_group->priv_accels[i].closure == closure)
{
g_object_ref (accel_group);
quick_accel_remove (accel_group, i);
g_object_unref (accel_group);
return TRUE;
}
return FALSE;
}
/**
* gtk_accel_group_disconnect_key:
* @accel_group: the accelerator group to install an accelerator in
* @accel_key: key value of the accelerator
* @accel_mods: modifier combination of the accelerator
* @returns: %TRUE if there was an accelerator which could be
* removed, %FALSE otherwise
*
* Removes an accelerator previously installed through
* gtk_accel_group_connect().
*/
gboolean
gtk_accel_group_disconnect_key (GtkAccelGroup *accel_group,
guint accel_key,
GdkModifierType accel_mods)
{
GtkAccelGroupEntry *entries;
GSList *slist, *clist = NULL;
gboolean removed_one = FALSE;
guint n;
g_return_val_if_fail (GTK_IS_ACCEL_GROUP (accel_group), FALSE);
g_object_ref (accel_group);
accel_key = gdk_keyval_to_lower (accel_key);
entries = quick_accel_find (accel_group, accel_key, accel_mods, &n);
while (n--)
{
GClosure *closure = g_closure_ref (entries[n].closure);
clist = g_slist_prepend (clist, closure);
}
for (slist = clist; slist; slist = slist->next)
{
GClosure *closure = slist->data;
removed_one |= gtk_accel_group_disconnect (accel_group, closure);
g_closure_unref (closure);
}
g_slist_free (clist);
g_object_unref (accel_group);
return removed_one;
}
void
_gtk_accel_group_reconnect (GtkAccelGroup *accel_group,
GQuark accel_path_quark)
{
GSList *slist, *clist = NULL;
guint i;
g_return_if_fail (GTK_IS_ACCEL_GROUP (accel_group));
g_object_ref (accel_group);
for (i = 0; i < accel_group->n_accels; i++)
if (accel_group->priv_accels[i].accel_path_quark == accel_path_quark)
{
GClosure *closure = g_closure_ref (accel_group->priv_accels[i].closure);
clist = g_slist_prepend (clist, closure);
}
for (slist = clist; slist; slist = slist->next)
{
GClosure *closure = slist->data;
gtk_accel_group_disconnect (accel_group, closure);
gtk_accel_group_connect_by_path (accel_group, g_quark_to_string (accel_path_quark), closure);
g_closure_unref (closure);
}
g_slist_free (clist);
g_object_unref (accel_group);
}
/**
* gtk_accel_group_query:
* @accel_group: the accelerator group to query
* @accel_key: key value of the accelerator
* @accel_mods: modifier combination of the accelerator
* @n_entries: location to return the number of entries found, or %NULL
* @returns: an array of @n_entries #GtkAccelGroupEntry elements, or %NULL. The array is owned by GTK+ and must not be freed.
*
* Queries an accelerator group for all entries matching @accel_key and
* @accel_mods.
*/
GtkAccelGroupEntry*
gtk_accel_group_query (GtkAccelGroup *accel_group,
guint accel_key,
GdkModifierType accel_mods,
guint *n_entries)
{
GtkAccelGroupEntry *entries;
guint n;
g_return_val_if_fail (GTK_IS_ACCEL_GROUP (accel_group), NULL);
entries = quick_accel_find (accel_group, gdk_keyval_to_lower (accel_key), accel_mods, &n);
if (n_entries)
*n_entries = entries ? n : 0;
return entries;
}
/**
* gtk_accel_group_from_accel_closure:
* @closure: a #GClosure
* @returns: the #GtkAccelGroup to which @closure is connected, or %NULL.
*
* Finds the #GtkAccelGroup to which @closure is connected;
* see gtk_accel_group_connect().
*/
GtkAccelGroup*
gtk_accel_group_from_accel_closure (GClosure *closure)
{
guint i;
g_return_val_if_fail (closure != NULL, NULL);
/* a few remarks on what we do here. in general, we need a way to reverse lookup
* accel_groups from closures that are being used in accel groups. this could
* be done e.g via a hashtable. it is however cheaper (memory wise) to just
* use the invalidation notifier on the closure itself (which we need to install
* anyway), that contains the accel group as data which, besides needing to peek
* a bit at closure internals, works just as good.
*/
for (i = 0; i < G_CLOSURE_N_NOTIFIERS (closure); i++)
if (closure->notifiers[i].notify == accel_closure_invalidate)
return closure->notifiers[i].data;
return NULL;
}
/**
* gtk_accel_group_activate:
* @accel_group: a #GtkAccelGroup
* @accel_quark: the quark for the accelerator name
* @acceleratable: the #GObject, usually a #GtkWindow, on which
* to activate the accelerator.
* @accel_key: accelerator keyval from a key event
* @accel_mods: keyboard state mask from a key event
* @returns: %TRUE if the accelerator was handled, %FALSE otherwise
*
* Finds the first accelerator in @accel_group
* that matches @accel_key and @accel_mods, and
* activates it.
*
* Returns: %TRUE if an accelerator was activated and handled this keypress
*/
gboolean
gtk_accel_group_activate (GtkAccelGroup *accel_group,
GQuark accel_quark,
GObject *acceleratable,
guint accel_key,
GdkModifierType accel_mods)
{
gboolean was_handled;
g_return_val_if_fail (GTK_IS_ACCEL_GROUP (accel_group), FALSE);
g_return_val_if_fail (G_IS_OBJECT (acceleratable), FALSE);
was_handled = FALSE;
g_signal_emit (accel_group, signal_accel_activate, accel_quark,
acceleratable, accel_key, accel_mods, &was_handled);
return was_handled;
}
/**
* gtk_accel_groups_activate:
* @object: the #GObject, usually a #GtkWindow, on which
* to activate the accelerator.
* @accel_key: accelerator keyval from a key event
* @accel_mods: keyboard state mask from a key event
* @returns: %TRUE if the accelerator was handled, %FALSE otherwise
*
* Finds the first accelerator in any #GtkAccelGroup attached
* to @object that matches @accel_key and @accel_mods, and
* activates that accelerator.
*
* Returns: %TRUE if an accelerator was activated and handled this keypress
*/
gboolean
gtk_accel_groups_activate (GObject *object,
guint accel_key,
GdkModifierType accel_mods)
{
g_return_val_if_fail (G_IS_OBJECT (object), FALSE);
if (gtk_accelerator_valid (accel_key, accel_mods))
{
gchar *accel_name;
GQuark accel_quark;
GSList *slist;
accel_name = gtk_accelerator_name (accel_key, (accel_mods & gtk_accelerator_get_default_mod_mask ()));
accel_quark = g_quark_from_string (accel_name);
g_free (accel_name);
for (slist = gtk_accel_groups_from_object (object); slist; slist = slist->next)
if (gtk_accel_group_activate (slist->data, accel_quark, object, accel_key, accel_mods))
return TRUE;
}
return FALSE;
}
/**
* gtk_accelerator_valid:
* @keyval: a GDK keyval
* @modifiers: modifier mask
* @returns: %TRUE if the accelerator is valid
*
* Determines whether a given keyval and modifier mask constitute
* a valid keyboard accelerator. For example, the #GDK_a keyval
* plus #GDK_CONTROL_MASK is valid - this is a "Ctrl+a" accelerator.
* But, you can't, for instance, use the #GDK_Control_L keyval
* as an accelerator.
*/
gboolean
gtk_accelerator_valid (guint keyval,
GdkModifierType modifiers)
{
static const guint invalid_accelerator_vals[] = {
GDK_Shift_L, GDK_Shift_R, GDK_Shift_Lock, GDK_Caps_Lock, GDK_ISO_Lock,
GDK_Control_L, GDK_Control_R, GDK_Meta_L, GDK_Meta_R,
GDK_Alt_L, GDK_Alt_R, GDK_Super_L, GDK_Super_R, GDK_Hyper_L, GDK_Hyper_R,
GDK_ISO_Level3_Shift, GDK_ISO_Next_Group, GDK_ISO_Prev_Group,
GDK_ISO_First_Group, GDK_ISO_Last_Group,
GDK_Mode_switch, GDK_Num_Lock, GDK_Multi_key,
GDK_Scroll_Lock, GDK_Sys_Req,
GDK_Tab, GDK_ISO_Left_Tab, GDK_KP_Tab,
GDK_First_Virtual_Screen, GDK_Prev_Virtual_Screen,
GDK_Next_Virtual_Screen, GDK_Last_Virtual_Screen,
GDK_Terminate_Server, GDK_AudibleBell_Enable,
0
};
static const guint invalid_unmodified_vals[] = {
GDK_Up, GDK_Down, GDK_Left, GDK_Right,
GDK_KP_Up, GDK_KP_Down, GDK_KP_Left, GDK_KP_Right,
0
};
const guint *ac_val;
modifiers &= GDK_MODIFIER_MASK;
if (keyval <= 0xFF)
return keyval >= 0x20;
ac_val = invalid_accelerator_vals;
while (*ac_val)
{
if (keyval == *ac_val++)
return FALSE;
}
if (!modifiers)
{
ac_val = invalid_unmodified_vals;
while (*ac_val)
{
if (keyval == *ac_val++)
return FALSE;
}
}
return TRUE;
}
static inline gboolean
is_alt (const gchar *string)
{
return ((string[0] == '<') &&
(string[1] == 'a' || string[1] == 'A') &&
(string[2] == 'l' || string[2] == 'L') &&
(string[3] == 't' || string[3] == 'T') &&
(string[4] == '>'));
}
static inline gboolean
is_ctl (const gchar *string)
{
return ((string[0] == '<') &&
(string[1] == 'c' || string[1] == 'C') &&
(string[2] == 't' || string[2] == 'T') &&
(string[3] == 'l' || string[3] == 'L') &&
(string[4] == '>'));
}
static inline gboolean
is_modx (const gchar *string)
{
return ((string[0] == '<') &&
(string[1] == 'm' || string[1] == 'M') &&
(string[2] == 'o' || string[2] == 'O') &&
(string[3] == 'd' || string[3] == 'D') &&
(string[4] >= '1' && string[4] <= '5') &&
(string[5] == '>'));
}
static inline gboolean
is_ctrl (const gchar *string)
{
return ((string[0] == '<') &&
(string[1] == 'c' || string[1] == 'C') &&
(string[2] == 't' || string[2] == 'T') &&
(string[3] == 'r' || string[3] == 'R') &&
(string[4] == 'l' || string[4] == 'L') &&
(string[5] == '>'));
}
static inline gboolean
is_shft (const gchar *string)
{
return ((string[0] == '<') &&
(string[1] == 's' || string[1] == 'S') &&
(string[2] == 'h' || string[2] == 'H') &&
(string[3] == 'f' || string[3] == 'F') &&
(string[4] == 't' || string[4] == 'T') &&
(string[5] == '>'));
}
static inline gboolean
is_shift (const gchar *string)
{
return ((string[0] == '<') &&
(string[1] == 's' || string[1] == 'S') &&
(string[2] == 'h' || string[2] == 'H') &&
(string[3] == 'i' || string[3] == 'I') &&
(string[4] == 'f' || string[4] == 'F') &&
(string[5] == 't' || string[5] == 'T') &&
(string[6] == '>'));
}
static inline gboolean
is_control (const gchar *string)
{
return ((string[0] == '<') &&
(string[1] == 'c' || string[1] == 'C') &&
(string[2] == 'o' || string[2] == 'O') &&
(string[3] == 'n' || string[3] == 'N') &&
(string[4] == 't' || string[4] == 'T') &&
(string[5] == 'r' || string[5] == 'R') &&
(string[6] == 'o' || string[6] == 'O') &&
(string[7] == 'l' || string[7] == 'L') &&
(string[8] == '>'));
}
static inline gboolean
is_release (const gchar *string)
{
return ((string[0] == '<') &&
(string[1] == 'r' || string[1] == 'R') &&
(string[2] == 'e' || string[2] == 'E') &&
(string[3] == 'l' || string[3] == 'L') &&
(string[4] == 'e' || string[4] == 'E') &&
(string[5] == 'a' || string[5] == 'A') &&
(string[6] == 's' || string[6] == 'S') &&
(string[7] == 'e' || string[7] == 'E') &&
(string[8] == '>'));
}
static inline gboolean
is_meta (const gchar *string)
{
return ((string[0] == '<') &&
(string[1] == 'm' || string[1] == 'M') &&
(string[2] == 'e' || string[2] == 'E') &&
(string[3] == 't' || string[3] == 'T') &&
(string[4] == 'a' || string[4] == 'A') &&
(string[5] == '>'));
}
static inline gboolean
is_super (const gchar *string)
{
return ((string[0] == '<') &&
(string[1] == 's' || string[1] == 'S') &&
(string[2] == 'u' || string[2] == 'U') &&
(string[3] == 'p' || string[3] == 'P') &&
(string[4] == 'e' || string[4] == 'E') &&
(string[5] == 'r' || string[5] == 'R') &&
(string[6] == '>'));
}
static inline gboolean
is_hyper (const gchar *string)
{
return ((string[0] == '<') &&
(string[1] == 'h' || string[1] == 'H') &&
(string[2] == 'y' || string[2] == 'Y') &&
(string[3] == 'p' || string[3] == 'P') &&
(string[4] == 'e' || string[4] == 'E') &&
(string[5] == 'r' || string[5] == 'R') &&
(string[6] == '>'));
}
/**
* gtk_accelerator_parse:
* @accelerator: string representing an accelerator
* @accelerator_key: return location for accelerator keyval
* @accelerator_mods: return location for accelerator modifier mask
*
* Parses a string representing an accelerator. The
* format looks like "&lt;Control&gt;a" or "&lt;Shift&gt;&lt;Alt&gt;F1" or
* "&lt;Release&gt;z" (the last one is for key release).
* The parser is fairly liberal and allows lower or upper case,
* and also abbreviations such as "&lt;Ctl&gt;" and "&lt;Ctrl&gt;".
*
* If the parse fails, @accelerator_key and @accelerator_mods will
* be set to 0 (zero).
*/
void
gtk_accelerator_parse (const gchar *accelerator,
guint *accelerator_key,
GdkModifierType *accelerator_mods)
{
guint keyval;
GdkModifierType mods;
gint len;
if (accelerator_key)
*accelerator_key = 0;
if (accelerator_mods)
*accelerator_mods = 0;
g_return_if_fail (accelerator != NULL);
keyval = 0;
mods = 0;
len = strlen (accelerator);
while (len)
{
if (*accelerator == '<')
{
if (len >= 9 && is_release (accelerator))
{
accelerator += 9;
len -= 9;
mods |= GDK_RELEASE_MASK;
}
else if (len >= 9 && is_control (accelerator))
{
accelerator += 9;
len -= 9;
mods |= GDK_CONTROL_MASK;
}
else if (len >= 7 && is_shift (accelerator))
{
accelerator += 7;
len -= 7;
mods |= GDK_SHIFT_MASK;
}
else if (len >= 6 && is_shft (accelerator))
{
accelerator += 6;
len -= 6;
mods |= GDK_SHIFT_MASK;
}
else if (len >= 6 && is_ctrl (accelerator))
{
accelerator += 6;
len -= 6;
mods |= GDK_CONTROL_MASK;
}
else if (len >= 6 && is_modx (accelerator))
{
static const guint mod_vals[] = {
GDK_MOD1_MASK, GDK_MOD2_MASK, GDK_MOD3_MASK,
GDK_MOD4_MASK, GDK_MOD5_MASK
};
len -= 6;
accelerator += 4;
mods |= mod_vals[*accelerator - '1'];
accelerator += 2;
}
else if (len >= 5 && is_ctl (accelerator))
{
accelerator += 5;
len -= 5;
mods |= GDK_CONTROL_MASK;
}
else if (len >= 5 && is_alt (accelerator))
{
accelerator += 5;
len -= 5;
mods |= GDK_MOD1_MASK;
}
else if (len >= 6 && is_meta (accelerator))
{
accelerator += 6;
len -= 6;
mods |= GDK_META_MASK;
}
else if (len >= 7 && is_hyper (accelerator))
{
accelerator += 7;
len -= 7;
mods |= GDK_HYPER_MASK;
}
else if (len >= 7 && is_super (accelerator))
{
accelerator += 7;
len -= 7;
mods |= GDK_SUPER_MASK;
}
else
{
gchar last_ch;
last_ch = *accelerator;
while (last_ch && last_ch != '>')
{
last_ch = *accelerator;
accelerator += 1;
len -= 1;
}
}
}
else
{
keyval = gdk_keyval_from_name (accelerator);
accelerator += len;
len -= len;
}
}
if (accelerator_key)
*accelerator_key = gdk_keyval_to_lower (keyval);
if (accelerator_mods)
*accelerator_mods = mods;
}
/**
* gtk_accelerator_name:
* @accelerator_key: accelerator keyval
* @accelerator_mods: accelerator modifier mask
*
* Converts an accelerator keyval and modifier mask
* into a string parseable by gtk_accelerator_parse().
* For example, if you pass in #GDK_q and #GDK_CONTROL_MASK,
* this function returns "&lt;Control&gt;q".
*
* If you need to display accelerators in the user interface,
* see gtk_accelerator_get_label().
*
* Returns: a newly-allocated accelerator name
*/
gchar*
gtk_accelerator_name (guint accelerator_key,
GdkModifierType accelerator_mods)
{
static const gchar text_release[] = "<Release>";
static const gchar text_shift[] = "<Shift>";
static const gchar text_control[] = "<Control>";
static const gchar text_mod1[] = "<Alt>";
static const gchar text_mod2[] = "<Mod2>";
static const gchar text_mod3[] = "<Mod3>";
static const gchar text_mod4[] = "<Mod4>";
static const gchar text_mod5[] = "<Mod5>";
static const gchar text_meta[] = "<Meta>";
static const gchar text_super[] = "<Super>";
static const gchar text_hyper[] = "<Hyper>";
guint l;
gchar *keyval_name;
gchar *accelerator;
accelerator_mods &= GDK_MODIFIER_MASK;
keyval_name = gdk_keyval_name (gdk_keyval_to_lower (accelerator_key));
if (!keyval_name)
keyval_name = "";
l = 0;
if (accelerator_mods & GDK_RELEASE_MASK)
l += sizeof (text_release) - 1;
if (accelerator_mods & GDK_SHIFT_MASK)
l += sizeof (text_shift) - 1;
if (accelerator_mods & GDK_CONTROL_MASK)
l += sizeof (text_control) - 1;
if (accelerator_mods & GDK_MOD1_MASK)
l += sizeof (text_mod1) - 1;
if (accelerator_mods & GDK_MOD2_MASK)
l += sizeof (text_mod2) - 1;
if (accelerator_mods & GDK_MOD3_MASK)
l += sizeof (text_mod3) - 1;
if (accelerator_mods & GDK_MOD4_MASK)
l += sizeof (text_mod4) - 1;
if (accelerator_mods & GDK_MOD5_MASK)
l += sizeof (text_mod5) - 1;
l += strlen (keyval_name);
if (accelerator_mods & GDK_META_MASK)
l += sizeof (text_meta) - 1;
if (accelerator_mods & GDK_HYPER_MASK)
l += sizeof (text_hyper) - 1;
if (accelerator_mods & GDK_SUPER_MASK)
l += sizeof (text_super) - 1;
accelerator = g_new (gchar, l + 1);
l = 0;
accelerator[l] = 0;
if (accelerator_mods & GDK_RELEASE_MASK)
{
strcpy (accelerator + l, text_release);
l += sizeof (text_release) - 1;
}
if (accelerator_mods & GDK_SHIFT_MASK)
{
strcpy (accelerator + l, text_shift);
l += sizeof (text_shift) - 1;
}
if (accelerator_mods & GDK_CONTROL_MASK)
{
strcpy (accelerator + l, text_control);
l += sizeof (text_control) - 1;
}
if (accelerator_mods & GDK_MOD1_MASK)
{
strcpy (accelerator + l, text_mod1);
l += sizeof (text_mod1) - 1;
}
if (accelerator_mods & GDK_MOD2_MASK)
{
strcpy (accelerator + l, text_mod2);
l += sizeof (text_mod2) - 1;
}
if (accelerator_mods & GDK_MOD3_MASK)
{
strcpy (accelerator + l, text_mod3);
l += sizeof (text_mod3) - 1;
}
if (accelerator_mods & GDK_MOD4_MASK)
{
strcpy (accelerator + l, text_mod4);
l += sizeof (text_mod4) - 1;
}
if (accelerator_mods & GDK_MOD5_MASK)
{
strcpy (accelerator + l, text_mod5);
l += sizeof (text_mod5) - 1;
}
if (accelerator_mods & GDK_META_MASK)
{
strcpy (accelerator + l, text_meta);
l += sizeof (text_meta) - 1;
}
if (accelerator_mods & GDK_HYPER_MASK)
{
strcpy (accelerator + l, text_hyper);
l += sizeof (text_hyper) - 1;
}
if (accelerator_mods & GDK_SUPER_MASK)
{
strcpy (accelerator + l, text_super);
l += sizeof (text_super) - 1;
}
strcpy (accelerator + l, keyval_name);
return accelerator;
}
/**
* gtk_accelerator_get_label:
* @accelerator_key: accelerator keyval
* @accelerator_mods: accelerator modifier mask
*
* Converts an accelerator keyval and modifier mask into a string
* which can be used to represent the accelerator to the user.
*
* Returns: a newly-allocated string representing the accelerator.
*
* Since: 2.6
*/
gchar*
gtk_accelerator_get_label (guint accelerator_key,
GdkModifierType accelerator_mods)
{
GtkAccelLabelClass *klass;
gchar *label;
klass = g_type_class_ref (GTK_TYPE_ACCEL_LABEL);
label = _gtk_accel_label_class_get_accelerator_label (klass,
accelerator_key,
accelerator_mods);
g_type_class_unref (klass); /* klass is kept alive since gtk uses static types */
return label;
}
/**
* gtk_accelerator_set_default_mod_mask:
* @default_mod_mask: accelerator modifier mask
*
* Sets the modifiers that will be considered significant for keyboard
* accelerators. The default mod mask is #GDK_CONTROL_MASK |
* #GDK_SHIFT_MASK | #GDK_MOD1_MASK | #GDK_SUPER_MASK |
* #GDK_HYPER_MASK | #GDK_META_MASK, that is, Control, Shift, Alt,
* Super, Hyper and Meta. Other modifiers will by default be ignored
* by #GtkAccelGroup.
* You must include at least the three modifiers Control, Shift
* and Alt in any value you pass to this function.
*
* The default mod mask should be changed on application startup,
* before using any accelerator groups.
*/
void
gtk_accelerator_set_default_mod_mask (GdkModifierType default_mod_mask)
{
default_accel_mod_mask = (default_mod_mask & GDK_MODIFIER_MASK) |
(GDK_CONTROL_MASK | GDK_SHIFT_MASK | GDK_MOD1_MASK);
}
/**
* gtk_accelerator_get_default_mod_mask:
* @returns: the default accelerator modifier mask
*
* Gets the value set by gtk_accelerator_set_default_mod_mask().
*/
guint
gtk_accelerator_get_default_mod_mask (void)
{
return default_accel_mod_mask;
}
#define __GTK_ACCEL_GROUP_C__
#include "gtkaliasdef.c"
Reference in New Issue View Git Blame Copy Permalink