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gtk2/gtk/gtkaccelgroup.c
Owen Taylor a036c6e59f Make gtkmarshal.list/gtkmarshal.h only for compatibility with GTK+-1.2; 
Sat Nov 17 18:26:45 2001  Owen Taylor  <otaylor@redhat.com>

	* gtk/Makefile.am gtk/gtkmarshal.list gtk/gtkmarshalers.list
	gtk/*.c gtk/gtksignal.h: Make gtkmarshal.list/gtkmarshal.h
	only for compatibility with GTK+-1.2; and deprecate it;
	put all marshalers we actually use into gtkmarshalers.list
	and use the _gtk_marshal_ prefix for these marshalers.
2001-11-17 23:28:51 +00:00

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/* 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 "gtkaccelgroup.h"
#include "gtkaccelmap.h"
#include "gdk/gdkkeysyms.h"
#include "gtkmarshalers.h"
#include "gtksignal.h"
#include <ctype.h>
#include <string.h>
#include <stdlib.h>
/* --- prototypes --- */
static void gtk_accel_group_class_init (GtkAccelGroupClass *class);
static void gtk_accel_group_init (GtkAccelGroup *accel_group);
static void gtk_accel_group_finalize (GObject *object);
/* --- variables --- */
static GObjectClass *parent_class = NULL;
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);
/* --- functions --- */
/**
* gtk_accel_map_change_entry
* @returns: the type ID for accelerator groups
*/
GType
gtk_accel_group_get_type (void)
{
static GType object_type = 0;
if (!object_type)
{
static const GTypeInfo object_info = {
sizeof (GtkAccelGroupClass),
(GBaseInitFunc) NULL,
(GBaseFinalizeFunc) NULL,
(GClassInitFunc) gtk_accel_group_class_init,
NULL, /* clas_finalize */
NULL, /* class_data */
sizeof (GtkAccelGroup),
0, /* n_preallocs */
(GInstanceInitFunc) gtk_accel_group_init,
};
object_type = g_type_register_static (G_TYPE_OBJECT,
"GtkAccelGroup",
&object_info, 0);
}
return object_type;
}
static gboolean
accel_activate_accumulator (GSignalInvocationHint *ihint,
GValue *return_accu,
const GValue *handler_return,
gpointer data)
{
gboolean continue_emission;
gboolean handler_val;
/* handler returns whether the accelerator was handled */
handler_val = g_value_get_boolean (handler_return);
/* record that as result for this emission */
g_value_set_boolean (return_accu, handler_val);
/* don't continue if accelerator was handled */
continue_emission = !handler_val;
return continue_emission;
}
static void
gtk_accel_group_class_init (GtkAccelGroupClass *class)
{
GObjectClass *object_class = G_OBJECT_CLASS (class);
parent_class = g_type_class_peek_parent (class);
quark_acceleratable_groups = g_quark_from_static_string ("gtk-acceleratable-accel-groups");
object_class->finalize = gtk_accel_group_finalize;
class->accel_changed = NULL;
signal_accel_activate = g_signal_new ("accel_activate",
G_OBJECT_CLASS_TYPE (class),
G_SIGNAL_DETAILED,
0,
accel_activate_accumulator, NULL,
_gtk_marshal_BOOLEAN__OBJECT_UINT_UINT,
G_TYPE_BOOLEAN, 3, G_TYPE_OBJECT, G_TYPE_UINT, G_TYPE_UINT);
signal_accel_changed = g_signal_new ("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_UINT_BOXED,
G_TYPE_NONE, 3, G_TYPE_UINT, G_TYPE_UINT, G_TYPE_CLOSURE);
}
static void
gtk_accel_group_finalize (GObject *object)
{
GtkAccelGroup *accel_group = GTK_ACCEL_GROUP (object);
g_free (accel_group->priv_accels);
G_OBJECT_CLASS (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);
}
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);
}
GSList*
gtk_accel_groups_from_acceleratable (GObject *object)
{
g_return_val_if_fail (G_IS_OBJECT (object), NULL);
return g_object_get_qdata (object, quark_acceleratable_groups);
}
GtkAccelKey*
gtk_accel_group_find (GtkAccelGroup *accel_group,
gboolean (*find_func) (GtkAccelKey *key,
GClosure *closure,
gpointer data),
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
*
* 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
*
* This function 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_tag_func (gpointer data,
GClosure *closure)
{
/* GtkAccelGroup *accel_group = data; */
}
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;
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;
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);
/* tag closure for backwards lookup */
g_closure_add_invalidate_notifier (closure, accel_group, accel_tag_func);
}
static GtkAccelGroupEntry*
quick_accel_find (GtkAccelGroup *accel_group,
guint accel_key,
GdkModifierType accel_mods,
guint *count_p)
{
GtkAccelGroupEntry *entry;
GtkAccelGroupEntry key;
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 (*count_p = 0; 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;
}
static GSList*
quick_accel_remove (GtkAccelGroup *accel_group,
guint accel_key,
GdkModifierType accel_mods)
{
guint i, n;
GtkAccelGroupEntry *entry = quick_accel_find (accel_group, accel_key, accel_mods, &n);
guint pos = entry - accel_group->priv_accels;
GSList *clist = NULL;
if (!entry)
return NULL;
for (i = 0; i < n; i++)
{
g_closure_remove_invalidate_notifier (entry[i].closure, accel_group, accel_tag_func);
clist = g_slist_prepend (clist, entry[i].closure);
}
accel_group->n_accels -= n;
g_memmove (entry, entry + n,
(accel_group->n_accels - pos) * sizeof (accel_group->priv_accels[0]));
return clist;
}
/**
* gtk_accel_group_connect
* @accel_group: the ccelerator 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
* @accel_path_quark: accelerator path quark from GtkAccelMapNotify
*
* Install 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.
* If this connection is made in response to an accelerator path change (see
* gtk_accel_map_change_entry()) from a #GtkAccelMapNotify notifier,
* @accel_path_quark must be passed on from the notifier into this function,
* it should be 0 otherwise.
*/
void
gtk_accel_group_connect (GtkAccelGroup *accel_group,
guint accel_key,
GdkModifierType accel_mods,
GtkAccelFlags accel_flags,
GClosure *closure,
GQuark accel_path_quark)
{
gchar *accel_name;
GQuark accel_quark;
g_return_if_fail (GTK_IS_ACCEL_GROUP (accel_group));
g_return_if_fail (closure != NULL);
g_return_if_fail (accel_key > 0);
accel_name = gtk_accelerator_name (accel_key, accel_mods);
accel_quark = g_quark_from_string (accel_name);
g_free (accel_name);
quick_accel_add (accel_group, accel_key, accel_mods, accel_flags, closure, accel_path_quark);
/* 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 gboolean
accel_group_disconnect_closure (GtkAccelGroup *accel_group,
guint accel_key,
GdkModifierType accel_mods,
GClosure *closure)
{
gchar *accel_name;
GQuark accel_quark;
GSList *clist , *slist;
gboolean removed_some = FALSE;
accel_name = gtk_accelerator_name (accel_key, accel_mods);
accel_quark = g_quark_from_string (accel_name);
g_free (accel_name);
clist = quick_accel_remove (accel_group, accel_key, accel_mods);
if (!clist)
return FALSE;
g_object_ref (accel_group);
for (slist = clist; slist; slist = slist->next)
if (!closure || slist->data == (gpointer) closure)
{
g_signal_handlers_disconnect_matched (accel_group, G_SIGNAL_MATCH_CLOSURE | G_SIGNAL_MATCH_ID,
signal_accel_activate, 0,
slist->data, NULL, NULL);
/* and notify */
g_signal_emit (accel_group, signal_accel_changed, accel_quark, accel_key, accel_mods, slist->data);
/* remove quick_accel_add() ref_count */
g_closure_unref (slist->data);
removed_some = TRUE;
}
g_slist_free (clist);
g_object_unref (accel_group);
return removed_some;
}
/**
* gtk_accel_group_disconnect
* @accel_group: the ccelerator 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
*
* Remove an accelerator previously installed through
* gtk_accel_group_connect().
*/
gboolean
gtk_accel_group_disconnect (GtkAccelGroup *accel_group,
guint accel_key,
GdkModifierType accel_mods)
{
g_return_val_if_fail (GTK_IS_ACCEL_GROUP (accel_group), FALSE);
return accel_group_disconnect_closure (accel_group, accel_key, accel_mods, NULL);
}
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, accel_key, accel_mods, &n);
if (n_entries)
*n_entries = entries ? n : 0;
return entries;
}
static gboolean
find_accel_closure (GtkAccelKey *key,
GClosure *closure,
gpointer data)
{
return data == (gpointer) closure;
}
gboolean
gtk_accel_groups_disconnect_closure (GClosure *closure)
{
GtkAccelGroup *group;
g_return_val_if_fail (closure != NULL, FALSE);
group = gtk_accel_group_from_accel_closure (closure);
if (group)
{
GtkAccelKey *key = gtk_accel_group_find (group, find_accel_closure, closure);
/* sigh, not finding the key can unexpectedly happen if someone disposes
* accel groups. that's highly recommended to _not_ do though.
*/
if (key)
{
accel_group_disconnect_closure (group, key->accel_key, key->accel_mods, closure);
return TRUE;
}
}
return FALSE;
}
GtkAccelGroup*
gtk_accel_group_from_accel_closure (GClosure *closure)
{
guint i;
g_return_val_if_fail (closure != NULL, NULL);
/* a few remarks on wat we do here. in general, we need a way to back-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
* store a NOP notifier on the closure itself 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_tag_func)
return closure->notifiers[i].data;
return NULL;
}
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);
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:
* @acceleratable: usually a #GtkWindow
* @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 @acceleratable that matches @accel_key and @accel_mods, and
* activates that accelerator.
* If an accelerator was activated and handled this keypress, %TRUE
* is returned.
*/
gboolean
gtk_accel_groups_activate (GObject *acceleratable,
guint accel_key,
GdkModifierType accel_mods)
{
g_return_val_if_fail (G_IS_OBJECT (acceleratable), 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);
accel_quark = g_quark_from_string (accel_name);
g_free (accel_name);
for (slist = gtk_accel_groups_from_acceleratable (acceleratable); slist; slist = slist->next)
if (_gtk_accel_group_activate (slist->data, accel_quark, acceleratable, 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 by default (see gtk_accelerator_set_default_mod_mask()) you
* cannot use the NumLock key as an accelerator modifier.
*/
gboolean
gtk_accelerator_valid (guint keyval,
GdkModifierType modifiers)
{
static const guint invalid_accelerator_vals[] = {
GDK_BackSpace, GDK_Delete, GDK_KP_Delete,
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_Mode_switch, GDK_Num_Lock, GDK_Multi_key,
GDK_Scroll_Lock, GDK_Sys_Req,
GDK_Up, GDK_Down, GDK_Left, GDK_Right, GDK_Tab, GDK_ISO_Left_Tab,
GDK_KP_Up, GDK_KP_Down, GDK_KP_Left, GDK_KP_Right, 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
};
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;
}
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] == '>'));
}
/**
* 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 "<Control>a" or "<Shift><Alt>F1" or
* "<Release>z" (the last one is for key release).
* The parser is fairly liberal and allows lower or upper case,
* and also abbreviations such as "<Ctl>" and "<Ctrl>".
*
* 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
{
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
* @returns: a newly allocated accelerator name
*
* 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 "<Control>q".
*
* The caller of this function must free the returned string.
*/
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>";
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);
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;
}
strcpy (accelerator + l, keyval_name);
return accelerator;
}
/**
* 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, that is, Control, Shift, and Alt.
* Other modifiers will by default be ignored by #GtkAccelGroup.
*
* 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;
}
/**
* 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;
}
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