1 /* GTK - The GIMP Toolkit
2 * Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
4 * GtkBindingSet: Keybinding manager for GObjects.
5 * Copyright (C) 1998 Tim Janik
7 * This library is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; either
10 * version 2 of the License, or (at your option) any later version.
12 * This library is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
17 * You should have received a copy of the GNU Lesser General Public
18 * License along with this library; if not, write to the
19 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
20 * Boston, MA 02111-1307, USA.
24 * Modified by the GTK+ Team and others 1997-2000. See the AUTHORS
25 * file for a list of people on the GTK+ Team. See the ChangeLog
26 * files for a list of changes. These files are distributed with
27 * GTK+ at ftp://ftp.gtk.org/pub/gtk/.
34 #include "gtkbindingsprivate.h"
35 #include "gtkkeyhash.h"
36 #include "gtkwidget.h"
43 * @Short_description: Key bindings for individual widgets
44 * @See_also: Keyboard Accelerators, Mnemonics, #GtkCssProvider
46 * #GtkBindingSet provides a mechanism for configuring GTK+ key bindings
47 * through CSS files. This eases key binding adjustments for application
48 * developers as well as users and provides GTK+ users or administrators
49 * with high key binding configurability which requires no application
50 * or toolkit side changes.
52 * <refsect2 id="gtk-bindings-install">
53 * <title>Installing a key binding</title>
55 * A CSS file binding consists of a 'binding-set' definition and a match
56 * statement to apply the binding set to specific widget types. Details
57 * on the matching mechanism are described under
58 * <link linkend="gtkcssprovider-selectors">Selectors</link>
59 * in the #GtkCssProvider documentation. Inside the binding set definition,
60 * key combinations are bound to one or more specific signal emissions on
61 * the target widget. Key combinations are strings consisting of an optional
62 * #GdkModifierType name and <link linkend="gdk-Keyboard-Handling">key names</link>
63 * such as those defined in <filename><gdk/gdkkeysyms.h></filename>
64 * or returned from gdk_keyval_name(), they have to be parsable by
65 * gtk_accelerator_parse(). Specifications of signal emissions consist
66 * of a string identifying the signal name, and a list of signal specific
67 * arguments in parenthesis.
70 * For example for binding Control and the left or right cursor keys
71 * of a #GtkEntry widget to the #GtkEntry::move-cursor signal (so movement
72 * occurs in 3-character steps), the following binding can be used:
73 * <informalexample><programlisting>
74 * @binding-set MoveCursor3
76 * bind "<Control>Right" { "move-cursor" (visual-positions, 3, 0) };
77 * bind "<Control>Left" { "move-cursor" (visual-positions, -3, 0) };
81 * gtk-key-bindings: MoveCursor3
83 * </programlisting></informalexample>
86 * <refsect2 id="gtk-bindings-unbind">
87 * <title>Unbinding existing key bindings</title>
89 * GTK+ already defines a number of useful bindings for the widgets
90 * it provides. Because custom bindings set up in CSS files take
91 * precedence over the default bindings shipped with GTK+, overriding
92 * existing bindings as demonstrated in
93 * <link linkend="gtk-bindings-install">Installing a key binding</link>
94 * works as expected. The same mechanism can not be used to "unbind"
95 * existing bindings, however.
96 * <informalexample><programlisting>
97 * @binding-set MoveCursor3
99 * bind "<Control>Right" { };
100 * bind "<Control>Left" { };
104 * gtk-key-bindings: MoveCursor3
106 * </programlisting></informalexample>
107 * The above example will not have the desired effect of causing
108 * "<Control>Right" and "<Control>Left" key presses to
109 * be ignored by GTK+. Instead, it just causes any existing bindings
110 * from the bindings set "MoveCursor3" to be deleted, so when
111 * "<Control>Right" or "<Control>Left" are pressed, no
112 * binding for these keys is found in binding set "MoveCursor3".
113 * GTK+ will thus continue to search for matching key bindings, and will
114 * eventually lookup and find the default GTK+ bindings for entries which
115 * implement word movement. To keep GTK+ from activating its default
116 * bindings, the "unbind" keyword can be used like this:
117 * <informalexample><programlisting>
118 * @binding-set MoveCursor3
120 * unbind "<Control>Right";
121 * unbind "<Control>Left";
125 * gtk-key-bindings: MoveCursor3
127 * </programlisting></informalexample>
128 * Now, GTK+ will find a match when looking up "<Control>Right"
129 * and "<Control>Left" key presses before it resorts to its default
130 * bindings, and the match instructs it to abort ("unbind") the search,
131 * so the key presses are not consumed by this widget. As usual, further
132 * processing of the key presses, e.g. by an entry's parent widget, is
138 /* --- defines --- */
139 #define BINDING_MOD_MASK() (gtk_accelerator_get_default_mod_mask () | GDK_RELEASE_MASK)
142 #define GTK_TYPE_IDENTIFIER (gtk_identifier_get_type ())
143 GType gtk_identifier_get_type (void) G_GNUC_CONST;
146 /* --- structures --- */
155 GTK_BINDING_TOKEN_BIND,
156 GTK_BINDING_TOKEN_UNBIND
159 /* --- variables --- */
160 static GHashTable *binding_entry_hash_table = NULL;
161 static GSList *binding_key_hashes = NULL;
162 static GSList *binding_set_list = NULL;
163 static const gchar key_class_binding_set[] = "gtk-class-binding-set";
164 static GQuark key_id_class_binding_set = 0;
167 /* --- functions --- */
169 gtk_identifier_get_type (void)
171 static GType our_type = 0;
175 GTypeInfo tinfo = { 0, };
176 our_type = g_type_register_static (G_TYPE_STRING, I_("GtkIdentifier"), &tinfo, 0);
183 pattern_spec_free (PatternSpec *pspec)
186 g_pattern_spec_free (pspec->pspec);
190 static GtkBindingSignal*
191 binding_signal_new (const gchar *signal_name,
194 GtkBindingSignal *signal;
196 signal = (GtkBindingSignal *) g_slice_alloc0 (sizeof (GtkBindingSignal) + n_args * sizeof (GtkBindingArg));
198 signal->signal_name = (gchar *)g_intern_string (signal_name);
199 signal->n_args = n_args;
200 signal->args = (GtkBindingArg *)(signal + 1);
206 binding_signal_free (GtkBindingSignal *sig)
210 for (i = 0; i < sig->n_args; i++)
212 if (G_TYPE_FUNDAMENTAL (sig->args[i].arg_type) == G_TYPE_STRING)
213 g_free (sig->args[i].d.string_data);
215 g_slice_free1 (sizeof (GtkBindingSignal) + sig->n_args * sizeof (GtkBindingArg), sig);
219 binding_entry_hash (gconstpointer key)
221 register const GtkBindingEntry *e = key;
231 binding_entries_compare (gconstpointer a,
234 register const GtkBindingEntry *ea = a;
235 register const GtkBindingEntry *eb = b;
237 return (ea->keyval == eb->keyval && ea->modifiers == eb->modifiers);
241 binding_key_hash_insert_entry (GtkKeyHash *key_hash,
242 GtkBindingEntry *entry)
244 guint keyval = entry->keyval;
246 /* We store lowercased accelerators. To deal with this, if <Shift>
247 * was specified, uppercase.
249 if (entry->modifiers & GDK_SHIFT_MASK)
251 if (keyval == GDK_KEY_Tab)
252 keyval = GDK_KEY_ISO_Left_Tab;
254 keyval = gdk_keyval_to_upper (keyval);
257 _gtk_key_hash_add_entry (key_hash, keyval, entry->modifiers & ~GDK_RELEASE_MASK, entry);
261 binding_key_hash_destroy (gpointer data)
263 GtkKeyHash *key_hash = data;
265 binding_key_hashes = g_slist_remove (binding_key_hashes, key_hash);
266 _gtk_key_hash_free (key_hash);
270 insert_entries_into_key_hash (gpointer key,
274 GtkKeyHash *key_hash = data;
275 GtkBindingEntry *entry = value;
277 for (; entry; entry = entry->hash_next)
278 binding_key_hash_insert_entry (key_hash, entry);
282 binding_key_hash_for_keymap (GdkKeymap *keymap)
284 static GQuark key_hash_quark = 0;
285 GtkKeyHash *key_hash;
288 key_hash_quark = g_quark_from_static_string ("gtk-binding-key-hash");
290 key_hash = g_object_get_qdata (G_OBJECT (keymap), key_hash_quark);
294 key_hash = _gtk_key_hash_new (keymap, NULL);
295 g_object_set_qdata_full (G_OBJECT (keymap), key_hash_quark, key_hash, binding_key_hash_destroy);
297 if (binding_entry_hash_table)
298 g_hash_table_foreach (binding_entry_hash_table,
299 insert_entries_into_key_hash,
302 binding_key_hashes = g_slist_prepend (binding_key_hashes, key_hash);
309 static GtkBindingEntry*
310 binding_entry_new (GtkBindingSet *binding_set,
312 GdkModifierType modifiers)
315 GtkBindingEntry *entry;
317 if (!binding_entry_hash_table)
318 binding_entry_hash_table = g_hash_table_new (binding_entry_hash, binding_entries_compare);
320 entry = g_new (GtkBindingEntry, 1);
321 entry->keyval = keyval;
322 entry->modifiers = modifiers;
323 entry->binding_set = binding_set,
324 entry->destroyed = FALSE;
325 entry->in_emission = FALSE;
326 entry->marks_unbound = FALSE;
327 entry->signals = NULL;
329 entry->set_next = binding_set->entries;
330 binding_set->entries = entry;
332 entry->hash_next = g_hash_table_lookup (binding_entry_hash_table, entry);
333 if (entry->hash_next)
334 g_hash_table_remove (binding_entry_hash_table, entry->hash_next);
335 g_hash_table_insert (binding_entry_hash_table, entry, entry);
337 for (tmp_list = binding_key_hashes; tmp_list; tmp_list = tmp_list->next)
339 GtkKeyHash *key_hash = tmp_list->data;
340 binding_key_hash_insert_entry (key_hash, entry);
347 binding_entry_free (GtkBindingEntry *entry)
349 GtkBindingSignal *sig;
351 g_assert (entry->set_next == NULL &&
352 entry->hash_next == NULL &&
353 entry->in_emission == FALSE &&
354 entry->destroyed == TRUE);
356 entry->destroyed = FALSE;
358 sig = entry->signals;
361 GtkBindingSignal *prev;
365 binding_signal_free (prev);
371 binding_entry_destroy (GtkBindingEntry *entry)
373 GtkBindingEntry *o_entry;
374 register GtkBindingEntry *tmp;
375 GtkBindingEntry *begin;
376 register GtkBindingEntry *last;
379 /* unlink from binding set
382 tmp = entry->binding_set->entries;
388 last->set_next = entry->set_next;
390 entry->binding_set->entries = entry->set_next;
394 tmp = last->set_next;
396 entry->set_next = NULL;
398 o_entry = g_hash_table_lookup (binding_entry_hash_table, entry);
407 last->hash_next = entry->hash_next;
409 begin = entry->hash_next;
413 tmp = last->hash_next;
415 entry->hash_next = NULL;
418 g_hash_table_remove (binding_entry_hash_table, entry);
419 else if (begin != o_entry)
421 g_hash_table_remove (binding_entry_hash_table, entry);
422 g_hash_table_insert (binding_entry_hash_table, begin, begin);
425 for (tmp_list = binding_key_hashes; tmp_list; tmp_list = tmp_list->next)
427 GtkKeyHash *key_hash = tmp_list->data;
428 _gtk_key_hash_remove_entry (key_hash, entry);
431 entry->destroyed = TRUE;
433 if (!entry->in_emission)
434 binding_entry_free (entry);
437 static GtkBindingEntry*
438 binding_ht_lookup_entry (GtkBindingSet *set,
440 GdkModifierType modifiers)
442 GtkBindingEntry lookup_entry = { 0 };
443 GtkBindingEntry *entry;
445 if (!binding_entry_hash_table)
448 lookup_entry.keyval = keyval;
449 lookup_entry.modifiers = modifiers;
451 entry = g_hash_table_lookup (binding_entry_hash_table, &lookup_entry);
452 for (; entry; entry = entry->hash_next)
453 if (entry->binding_set == set)
460 binding_compose_params (GObject *object,
470 params = g_new0 (GValue, query->n_params + 1);
473 /* The instance we emit on is the first object in the array
475 g_value_init (params, G_TYPE_OBJECT);
476 g_value_set_object (params, G_OBJECT (object));
479 types = query->param_types;
481 for (i = 1; i < query->n_params + 1 && valid; i++)
483 GValue tmp_value = { 0, };
485 g_value_init (params, *types);
487 switch (G_TYPE_FUNDAMENTAL (args->arg_type))
490 g_value_init (&tmp_value, G_TYPE_DOUBLE);
491 g_value_set_double (&tmp_value, args->d.double_data);
494 g_value_init (&tmp_value, G_TYPE_LONG);
495 g_value_set_long (&tmp_value, args->d.long_data);
498 /* gtk_rc_parse_flags/enum() has fancier parsing for this; we can't call
499 * that since we don't have a GParamSpec, so just do something simple
501 if (G_TYPE_FUNDAMENTAL (*types) == G_TYPE_ENUM)
503 GEnumClass *class = G_ENUM_CLASS (g_type_class_ref (*types));
507 if (args->arg_type == GTK_TYPE_IDENTIFIER)
509 GEnumValue *enum_value = NULL;
510 enum_value = g_enum_get_value_by_name (class, args->d.string_data);
512 enum_value = g_enum_get_value_by_nick (class, args->d.string_data);
515 g_value_init (&tmp_value, *types);
516 g_value_set_enum (&tmp_value, enum_value->value);
521 g_type_class_unref (class);
523 /* This is just a hack for compatibility with GTK+-1.2 where a string
524 * could be used for a single flag value / without the support for multiple
525 * values in gtk_rc_parse_flags(), this isn't very useful.
527 else if (G_TYPE_FUNDAMENTAL (*types) == G_TYPE_FLAGS)
529 GFlagsClass *class = G_FLAGS_CLASS (g_type_class_ref (*types));
533 if (args->arg_type == GTK_TYPE_IDENTIFIER)
535 GFlagsValue *flags_value = NULL;
536 flags_value = g_flags_get_value_by_name (class, args->d.string_data);
538 flags_value = g_flags_get_value_by_nick (class, args->d.string_data);
541 g_value_init (&tmp_value, *types);
542 g_value_set_flags (&tmp_value, flags_value->value);
547 g_type_class_unref (class);
551 g_value_init (&tmp_value, G_TYPE_STRING);
552 g_value_set_static_string (&tmp_value, args->d.string_data);
562 if (!g_value_transform (&tmp_value, params))
565 g_value_unset (&tmp_value);
577 for (j = 0; j < i; j++)
578 g_value_unset (&(*params_p)[j]);
588 gtk_binding_entry_activate (GtkBindingEntry *entry,
591 GtkBindingSignal *sig;
592 gboolean old_emission;
593 gboolean handled = FALSE;
596 old_emission = entry->in_emission;
597 entry->in_emission = TRUE;
599 g_object_ref (object);
601 for (sig = entry->signals; sig; sig = sig->next)
605 GValue *params = NULL;
606 GValue return_val = { 0, };
607 gchar *accelerator = NULL;
609 signal_id = g_signal_lookup (sig->signal_name, G_OBJECT_TYPE (object));
612 accelerator = gtk_accelerator_name (entry->keyval, entry->modifiers);
613 g_warning ("gtk_binding_entry_activate(): binding \"%s::%s\": "
614 "could not find signal \"%s\" in the `%s' class ancestry",
615 entry->binding_set->set_name,
618 g_type_name (G_OBJECT_TYPE (object)));
619 g_free (accelerator);
623 g_signal_query (signal_id, &query);
624 if (query.n_params != sig->n_args ||
625 (query.return_type != G_TYPE_NONE && query.return_type != G_TYPE_BOOLEAN) ||
626 !binding_compose_params (object, sig->args, &query, ¶ms))
628 accelerator = gtk_accelerator_name (entry->keyval, entry->modifiers);
629 g_warning ("gtk_binding_entry_activate(): binding \"%s::%s\": "
630 "signature mismatch for signal \"%s\" in the `%s' class ancestry",
631 entry->binding_set->set_name,
634 g_type_name (G_OBJECT_TYPE (object)));
636 else if (!(query.signal_flags & G_SIGNAL_ACTION))
638 accelerator = gtk_accelerator_name (entry->keyval, entry->modifiers);
639 g_warning ("gtk_binding_entry_activate(): binding \"%s::%s\": "
640 "signal \"%s\" in the `%s' class ancestry cannot be used for action emissions",
641 entry->binding_set->set_name,
644 g_type_name (G_OBJECT_TYPE (object)));
646 g_free (accelerator);
650 if (query.return_type == G_TYPE_BOOLEAN)
651 g_value_init (&return_val, G_TYPE_BOOLEAN);
653 g_signal_emitv (params, signal_id, 0, &return_val);
655 if (query.return_type == G_TYPE_BOOLEAN)
657 if (g_value_get_boolean (&return_val))
659 g_value_unset (&return_val);
664 for (i = 0; i < query.n_params + 1; i++)
665 g_value_unset (¶ms[i]);
668 if (entry->destroyed)
672 g_object_unref (object);
674 entry->in_emission = old_emission;
675 if (entry->destroyed && !entry->in_emission)
676 binding_entry_free (entry);
682 * gtk_binding_set_new: (skip)
683 * @set_name: unique name of this binding set
685 * GTK+ maintains a global list of binding sets. Each binding set has
686 * a unique name which needs to be specified upon creation.
688 * Return value: (transfer full): new binding set
691 gtk_binding_set_new (const gchar *set_name)
693 GtkBindingSet *binding_set;
695 g_return_val_if_fail (set_name != NULL, NULL);
697 binding_set = g_new (GtkBindingSet, 1);
698 binding_set->set_name = (gchar *) g_intern_string (set_name);
699 binding_set->widget_path_pspecs = NULL;
700 binding_set->widget_class_pspecs = NULL;
701 binding_set->class_branch_pspecs = NULL;
702 binding_set->entries = NULL;
703 binding_set->current = NULL;
704 binding_set->parsed = FALSE;
706 binding_set_list = g_slist_prepend (binding_set_list, binding_set);
712 * gtk_binding_set_by_class: (skip)
713 * @object_class: a valid #GObject class
715 * This function returns the binding set named after the type name of
716 * the passed in class structure. New binding sets are created on
717 * demand by this function.
719 * Return value: (transfer full): the binding set corresponding to
723 gtk_binding_set_by_class (gpointer object_class)
725 GObjectClass *class = object_class;
726 GtkBindingSet* binding_set;
728 g_return_val_if_fail (G_IS_OBJECT_CLASS (class), NULL);
730 if (!key_id_class_binding_set)
731 key_id_class_binding_set = g_quark_from_static_string (key_class_binding_set);
733 binding_set = g_dataset_id_get_data (class, key_id_class_binding_set);
738 binding_set = gtk_binding_set_new (g_type_name (G_OBJECT_CLASS_TYPE (class)));
739 g_dataset_id_set_data (class, key_id_class_binding_set, binding_set);
744 static GtkBindingSet*
745 gtk_binding_set_find_interned (const gchar *set_name)
749 for (slist = binding_set_list; slist; slist = slist->next)
751 GtkBindingSet *binding_set;
753 binding_set = slist->data;
754 if (binding_set->set_name == set_name)
762 * gtk_binding_set_find:
763 * @set_name: unique binding set name
765 * Find a binding set by its globally unique name.
767 * The @set_name can either be a name used for gtk_binding_set_new()
768 * or the type name of a class used in gtk_binding_set_by_class().
770 * Return value: (transfer none): %NULL or the specified binding set
773 gtk_binding_set_find (const gchar *set_name)
775 g_return_val_if_fail (set_name != NULL, NULL);
777 return gtk_binding_set_find_interned (g_intern_string (set_name));
781 * gtk_binding_set_activate:
782 * @binding_set: a #GtkBindingSet set to activate
783 * @keyval: key value of the binding
784 * @modifiers: key modifier of the binding
785 * @object: object to activate when binding found
787 * Find a key binding matching @keyval and @modifiers within
788 * @binding_set and activate the binding on @object.
790 * Return value: %TRUE if a binding was found and activated
793 gtk_binding_set_activate (GtkBindingSet *binding_set,
795 GdkModifierType modifiers,
798 GtkBindingEntry *entry;
800 g_return_val_if_fail (binding_set != NULL, FALSE);
801 g_return_val_if_fail (G_IS_OBJECT (object), FALSE);
803 keyval = gdk_keyval_to_lower (keyval);
804 modifiers = modifiers & BINDING_MOD_MASK ();
806 entry = binding_ht_lookup_entry (binding_set, keyval, modifiers);
808 return gtk_binding_entry_activate (entry, object);
814 gtk_binding_entry_clear_internal (GtkBindingSet *binding_set,
816 GdkModifierType modifiers)
818 GtkBindingEntry *entry;
820 keyval = gdk_keyval_to_lower (keyval);
821 modifiers = modifiers & BINDING_MOD_MASK ();
823 entry = binding_ht_lookup_entry (binding_set, keyval, modifiers);
825 binding_entry_destroy (entry);
827 entry = binding_entry_new (binding_set, keyval, modifiers);
831 * gtk_binding_entry_skip:
832 * @binding_set: a #GtkBindingSet to skip an entry of
833 * @keyval: key value of binding to skip
834 * @modifiers: key modifier of binding to skip
836 * Install a binding on @binding_set which causes key lookups
837 * to be aborted, to prevent bindings from lower priority sets
843 gtk_binding_entry_skip (GtkBindingSet *binding_set,
845 GdkModifierType modifiers)
847 GtkBindingEntry *entry;
849 g_return_if_fail (binding_set != NULL);
851 keyval = gdk_keyval_to_lower (keyval);
852 modifiers = modifiers & BINDING_MOD_MASK ();
854 entry = binding_ht_lookup_entry (binding_set, keyval, modifiers);
856 binding_entry_destroy (entry);
858 entry = binding_entry_new (binding_set, keyval, modifiers);
859 entry->marks_unbound = TRUE;
863 * gtk_binding_entry_remove:
864 * @binding_set: a #GtkBindingSet to remove an entry of
865 * @keyval: key value of binding to remove
866 * @modifiers: key modifier of binding to remove
868 * Remove a binding previously installed via
869 * gtk_binding_entry_add_signal() on @binding_set.
872 gtk_binding_entry_remove (GtkBindingSet *binding_set,
874 GdkModifierType modifiers)
876 GtkBindingEntry *entry;
878 g_return_if_fail (binding_set != NULL);
880 keyval = gdk_keyval_to_lower (keyval);
881 modifiers = modifiers & BINDING_MOD_MASK ();
883 entry = binding_ht_lookup_entry (binding_set, keyval, modifiers);
885 binding_entry_destroy (entry);
889 * gtk_binding_entry_add_signall:
890 * @binding_set: a #GtkBindingSet to add a signal to
892 * @modifiers: key modifier
893 * @signal_name: signal name to be bound
894 * @binding_args: (transfer none) (element-type GtkBindingArg):
895 * list of #GtkBindingArg signal arguments
897 * Override or install a new key binding for @keyval with @modifiers on
901 gtk_binding_entry_add_signall (GtkBindingSet *binding_set,
903 GdkModifierType modifiers,
904 const gchar *signal_name,
905 GSList *binding_args)
907 _gtk_binding_entry_add_signall (binding_set,
909 signal_name, binding_args);
913 _gtk_binding_entry_add_signall (GtkBindingSet *binding_set,
915 GdkModifierType modifiers,
916 const gchar *signal_name,
917 GSList *binding_args)
919 GtkBindingEntry *entry;
920 GtkBindingSignal *signal, **signal_p;
925 g_return_if_fail (binding_set != NULL);
926 g_return_if_fail (signal_name != NULL);
928 keyval = gdk_keyval_to_lower (keyval);
929 modifiers = modifiers & BINDING_MOD_MASK ();
931 signal = binding_signal_new (signal_name, g_slist_length (binding_args));
934 for (slist = binding_args; slist; slist = slist->next)
936 GtkBindingArg *tmp_arg;
938 tmp_arg = slist->data;
941 g_warning ("gtk_binding_entry_add_signall(): arg[%u] is `NULL'", n);
942 binding_signal_free (signal);
945 switch (G_TYPE_FUNDAMENTAL (tmp_arg->arg_type))
948 arg->arg_type = G_TYPE_LONG;
949 arg->d.long_data = tmp_arg->d.long_data;
952 arg->arg_type = G_TYPE_DOUBLE;
953 arg->d.double_data = tmp_arg->d.double_data;
956 if (tmp_arg->arg_type != GTK_TYPE_IDENTIFIER)
957 arg->arg_type = G_TYPE_STRING;
959 arg->arg_type = GTK_TYPE_IDENTIFIER;
960 arg->d.string_data = g_strdup (tmp_arg->d.string_data);
961 if (!arg->d.string_data)
963 g_warning ("gtk_binding_entry_add_signall(): value of `string' arg[%u] is `NULL'", n);
964 binding_signal_free (signal);
969 g_warning ("gtk_binding_entry_add_signall(): unsupported type `%s' for arg[%u]",
970 g_type_name (arg->arg_type), n);
971 binding_signal_free (signal);
978 entry = binding_ht_lookup_entry (binding_set, keyval, modifiers);
981 gtk_binding_entry_clear_internal (binding_set, keyval, modifiers);
982 entry = binding_ht_lookup_entry (binding_set, keyval, modifiers);
984 signal_p = &entry->signals;
986 signal_p = &(*signal_p)->next;
991 * gtk_binding_entry_add_signal:
992 * @binding_set: a #GtkBindingSet to install an entry for
993 * @keyval: key value of binding to install
994 * @modifiers: key modifier of binding to install
995 * @signal_name: signal to execute upon activation
996 * @n_args: number of arguments to @signal_name
997 * @Varargs: arguments to @signal_name
999 * Override or install a new key binding for @keyval with @modifiers on
1000 * @binding_set. When the binding is activated, @signal_name will be
1001 * emitted on the target widget, with @n_args @Varargs used as
1005 gtk_binding_entry_add_signal (GtkBindingSet *binding_set,
1007 GdkModifierType modifiers,
1008 const gchar *signal_name,
1012 GSList *slist, *free_slist;
1016 g_return_if_fail (binding_set != NULL);
1017 g_return_if_fail (signal_name != NULL);
1019 va_start (args, n_args);
1021 for (i = 0; i < n_args; i++)
1025 arg = g_slice_new0 (GtkBindingArg);
1026 slist = g_slist_prepend (slist, arg);
1028 arg->arg_type = va_arg (args, GType);
1029 switch (G_TYPE_FUNDAMENTAL (arg->arg_type))
1035 case G_TYPE_BOOLEAN:
1038 arg->arg_type = G_TYPE_LONG;
1039 arg->d.long_data = va_arg (args, gint);
1043 arg->arg_type = G_TYPE_LONG;
1044 arg->d.long_data = va_arg (args, glong);
1048 arg->arg_type = G_TYPE_DOUBLE;
1049 arg->d.double_data = va_arg (args, gdouble);
1052 if (arg->arg_type != GTK_TYPE_IDENTIFIER)
1053 arg->arg_type = G_TYPE_STRING;
1054 arg->d.string_data = va_arg (args, gchar*);
1055 if (!arg->d.string_data)
1057 g_warning ("gtk_binding_entry_add_signal(): type `%s' arg[%u] is `NULL'",
1058 g_type_name (arg->arg_type),
1064 g_warning ("gtk_binding_entry_add_signal(): unsupported type `%s' for arg[%u]",
1065 g_type_name (arg->arg_type), i);
1072 if (i == n_args || i == 0)
1074 slist = g_slist_reverse (slist);
1075 _gtk_binding_entry_add_signall (binding_set, keyval, modifiers, signal_name, slist);
1081 g_slice_free (GtkBindingArg, slist->data);
1082 slist = slist->next;
1084 g_slist_free (free_slist);
1088 gtk_binding_parse_signal (GScanner *scanner,
1089 GtkBindingSet *binding_set,
1091 GdkModifierType modifiers)
1094 guint expected_token = 0;
1100 gboolean seen_comma;
1102 g_return_val_if_fail (scanner != NULL, G_TOKEN_ERROR);
1104 g_scanner_get_next_token (scanner);
1106 if (scanner->token != G_TOKEN_STRING)
1107 return G_TOKEN_STRING;
1109 g_scanner_peek_next_token (scanner);
1111 if (scanner->next_token != '(')
1113 g_scanner_get_next_token (scanner);
1117 signal = g_strdup (scanner->value.v_string);
1118 g_scanner_get_next_token (scanner);
1125 scanner->config->scan_symbols = FALSE;
1132 expected_token = G_TOKEN_INT;
1134 expected_token = ')';
1136 g_scanner_get_next_token (scanner);
1138 switch ((guint) scanner->token)
1144 arg = g_new (GtkBindingArg, 1);
1145 arg->arg_type = G_TYPE_DOUBLE;
1146 arg->d.double_data = scanner->value.v_float;
1150 arg->d.double_data = - arg->d.double_data;
1153 args = g_slist_prepend (args, arg);
1163 arg = g_new (GtkBindingArg, 1);
1164 arg->arg_type = G_TYPE_LONG;
1165 arg->d.long_data = scanner->value.v_int;
1169 arg->d.long_data = - arg->d.long_data;
1172 args = g_slist_prepend (args, arg);
1177 case G_TOKEN_STRING:
1178 if (need_arg && !negate)
1181 arg = g_new (GtkBindingArg, 1);
1182 arg->arg_type = G_TYPE_STRING;
1183 arg->d.string_data = g_strdup (scanner->value.v_string);
1184 args = g_slist_prepend (args, arg);
1190 case G_TOKEN_IDENTIFIER:
1191 if (need_arg && !negate)
1194 arg = g_new (GtkBindingArg, 1);
1195 arg->arg_type = GTK_TYPE_IDENTIFIER;
1196 arg->d.string_data = g_strdup (scanner->value.v_identifier);
1197 args = g_slist_prepend (args, arg);
1208 expected_token = G_TOKEN_INT;
1224 if (!(need_arg && seen_comma) && !negate)
1226 args = g_slist_reverse (args);
1227 _gtk_binding_entry_add_signall (binding_set,
1232 expected_token = G_TOKEN_NONE;
1244 scanner->config->scan_symbols = TRUE;
1246 for (slist = args; slist; slist = slist->next)
1252 if (G_TYPE_FUNDAMENTAL (arg->arg_type) == G_TYPE_STRING)
1253 g_free (arg->d.string_data);
1257 g_slist_free (args);
1260 return expected_token;
1264 gtk_binding_parse_bind (GScanner *scanner,
1265 GtkBindingSet *binding_set)
1268 GdkModifierType modifiers = 0;
1269 gboolean unbind = FALSE;
1271 g_return_val_if_fail (scanner != NULL, G_TOKEN_ERROR);
1273 g_scanner_get_next_token (scanner);
1275 if (scanner->token != G_TOKEN_SYMBOL)
1276 return G_TOKEN_SYMBOL;
1278 if (scanner->value.v_symbol != GUINT_TO_POINTER (GTK_BINDING_TOKEN_BIND) &&
1279 scanner->value.v_symbol != GUINT_TO_POINTER (GTK_BINDING_TOKEN_UNBIND))
1280 return G_TOKEN_SYMBOL;
1282 unbind = (scanner->value.v_symbol == GUINT_TO_POINTER (GTK_BINDING_TOKEN_UNBIND));
1283 g_scanner_get_next_token (scanner);
1285 if (scanner->token != (guint) G_TOKEN_STRING)
1286 return G_TOKEN_STRING;
1288 gtk_accelerator_parse (scanner->value.v_string, &keyval, &modifiers);
1289 modifiers &= BINDING_MOD_MASK ();
1292 return G_TOKEN_STRING;
1296 gtk_binding_entry_skip (binding_set, keyval, modifiers);
1297 return G_TOKEN_NONE;
1300 g_scanner_get_next_token (scanner);
1302 if (scanner->token != '{')
1305 gtk_binding_entry_clear_internal (binding_set, keyval, modifiers);
1306 g_scanner_peek_next_token (scanner);
1308 while (scanner->next_token != '}')
1310 guint expected_token;
1312 switch (scanner->next_token)
1314 case G_TOKEN_STRING:
1315 expected_token = gtk_binding_parse_signal (scanner,
1319 if (expected_token != G_TOKEN_NONE)
1320 return expected_token;
1323 g_scanner_get_next_token (scanner);
1327 g_scanner_peek_next_token (scanner);
1330 g_scanner_get_next_token (scanner);
1332 return G_TOKEN_NONE;
1336 create_signal_scanner (void)
1340 scanner = g_scanner_new (NULL);
1341 scanner->config->cset_identifier_nth = G_CSET_a_2_z G_CSET_A_2_Z G_CSET_DIGITS "-_";
1343 g_scanner_scope_add_symbol (scanner, 0, "bind", GUINT_TO_POINTER (GTK_BINDING_TOKEN_BIND));
1344 g_scanner_scope_add_symbol (scanner, 0, "unbind", GUINT_TO_POINTER (GTK_BINDING_TOKEN_UNBIND));
1346 g_scanner_set_scope (scanner, 0);
1352 * gtk_binding_entry_add_signal_from_string:
1353 * @binding_set: a #GtkBindingSet
1354 * @signal_desc: a signal description
1356 * Parses a signal description from @signal_desc and incorporates
1357 * it into @binding_set.
1359 * Signal descriptions may either bind a key combination to
1360 * one or more signals:
1361 * <informalexample><programlisting>
1363 * "signalname" (param, ...)
1366 * </programlisting></informalexample>
1368 * Or they may also unbind a key combination:
1369 * <informalexample><programlisting>
1371 * </programlisting></informalexample>
1373 * Key combinations must be in a format that can be parsed by
1374 * gtk_accelerator_parse().
1376 * Returns: %G_TOKEN_NONE if the signal was successfully parsed and added,
1377 * the expected token otherwise
1382 gtk_binding_entry_add_signal_from_string (GtkBindingSet *binding_set,
1383 const gchar *signal_desc)
1385 static GScanner *scanner = NULL;
1388 g_return_val_if_fail (binding_set != NULL, G_TOKEN_NONE);
1389 g_return_val_if_fail (signal_desc != NULL, G_TOKEN_NONE);
1391 if (G_UNLIKELY (!scanner))
1392 scanner = create_signal_scanner ();
1394 g_scanner_input_text (scanner, signal_desc,
1395 (guint) strlen (signal_desc));
1397 ret = gtk_binding_parse_bind (scanner, binding_set);
1399 /* Reset for next use */
1400 g_scanner_set_scope (scanner, 0);
1406 * gtk_binding_set_add_path:
1407 * @binding_set: a #GtkBindingSet to add a path to
1408 * @path_type: path type the pattern applies to
1409 * @path_pattern: the actual match pattern
1410 * @priority: binding priority
1412 * This function was used internally by the GtkRC parsing mechanism
1413 * to assign match patterns to #GtkBindingSet structures.
1415 * In GTK+ 3, these match patterns are unused.
1420 gtk_binding_set_add_path (GtkBindingSet *binding_set,
1421 GtkPathType path_type,
1422 const gchar *path_pattern,
1423 GtkPathPriorityType priority)
1426 GSList **slist_p, *slist;
1427 static guint seq_id = 0;
1429 g_return_if_fail (binding_set != NULL);
1430 g_return_if_fail (path_pattern != NULL);
1431 g_return_if_fail (priority <= GTK_PATH_PRIO_MASK);
1433 priority &= GTK_PATH_PRIO_MASK;
1437 case GTK_PATH_WIDGET:
1438 slist_p = &binding_set->widget_path_pspecs;
1440 case GTK_PATH_WIDGET_CLASS:
1441 slist_p = &binding_set->widget_class_pspecs;
1443 case GTK_PATH_CLASS:
1444 slist_p = &binding_set->class_branch_pspecs;
1447 g_assert_not_reached ();
1452 pspec = g_new (PatternSpec, 1);
1453 pspec->type = path_type;
1454 if (path_type == GTK_PATH_WIDGET_CLASS)
1455 pspec->pspec = NULL;
1457 pspec->pspec = g_pattern_spec_new (path_pattern);
1459 pspec->seq_id = priority << 28;
1460 pspec->user_data = binding_set;
1465 PatternSpec *tmp_pspec;
1467 tmp_pspec = slist->data;
1468 slist = slist->next;
1470 if (g_pattern_spec_equal (tmp_pspec->pspec, pspec->pspec))
1472 GtkPathPriorityType lprio = tmp_pspec->seq_id >> 28;
1474 pattern_spec_free (pspec);
1476 if (lprio < priority)
1478 tmp_pspec->seq_id &= 0x0fffffff;
1479 tmp_pspec->seq_id |= priority << 28;
1486 pspec->seq_id |= seq_id++ & 0x0fffffff;
1487 *slist_p = g_slist_prepend (*slist_p, pspec);
1492 find_entry_with_binding (GtkBindingEntry *entry,
1493 GtkBindingSet *binding_set)
1495 return (entry->binding_set == binding_set) ? 0 : 1;
1499 binding_activate (GtkBindingSet *binding_set,
1502 gboolean is_release,
1505 GtkBindingEntry *entry;
1508 elem = g_slist_find_custom (entries, binding_set,
1509 (GCompareFunc) find_entry_with_binding);
1516 if (is_release != ((entry->modifiers & GDK_RELEASE_MASK) != 0))
1519 if (entry->marks_unbound)
1525 if (gtk_binding_entry_activate (entry, object))
1532 gtk_bindings_activate_list (GObject *object,
1534 gboolean is_release)
1536 GtkStyleContext *context;
1537 GtkBindingSet *binding_set;
1538 GtkStateFlags state;
1539 gboolean handled = FALSE;
1540 gboolean unbound = FALSE;
1546 context = gtk_widget_get_style_context (GTK_WIDGET (object));
1547 state = gtk_widget_get_state_flags (GTK_WIDGET (object));
1549 gtk_style_context_get (context, state,
1550 "gtk-key-bindings", &array,
1556 for (i = 0; i < array->len; i++)
1558 binding_set = g_ptr_array_index (array, i);
1559 handled = binding_activate (binding_set, entries,
1566 g_ptr_array_unref (array);
1576 class_type = G_TYPE_FROM_INSTANCE (object);
1578 while (class_type && !handled)
1580 binding_set = gtk_binding_set_find_interned (g_type_name (class_type));
1581 class_type = g_type_parent (class_type);
1586 handled = binding_activate (binding_set, entries,
1599 * gtk_bindings_activate:
1600 * @object: object to activate when binding found
1601 * @keyval: key value of the binding
1602 * @modifiers: key modifier of the binding
1604 * Find a key binding matching @keyval and @modifiers and activate the
1605 * binding on @object.
1607 * Return value: %TRUE if a binding was found and activated
1610 gtk_bindings_activate (GObject *object,
1612 GdkModifierType modifiers)
1614 GSList *entries = NULL;
1615 GdkDisplay *display;
1616 GtkKeyHash *key_hash;
1617 gboolean handled = FALSE;
1618 gboolean is_release;
1620 if (!GTK_IS_WIDGET (object))
1623 is_release = (modifiers & GDK_RELEASE_MASK) != 0;
1624 modifiers = modifiers & BINDING_MOD_MASK () & ~GDK_RELEASE_MASK;
1626 display = gtk_widget_get_display (GTK_WIDGET (object));
1627 key_hash = binding_key_hash_for_keymap (gdk_keymap_get_for_display (display));
1629 entries = _gtk_key_hash_lookup_keyval (key_hash, keyval, modifiers);
1631 handled = gtk_bindings_activate_list (object, entries, is_release);
1633 g_slist_free (entries);
1639 * gtk_bindings_activate_event:
1640 * @object: a #GObject (generally must be a widget)
1641 * @event: a #GdkEventKey
1643 * Looks up key bindings for @object to find one matching
1644 * @event, and if one was found, activate it.
1646 * Return value: %TRUE if a matching key binding was found
1651 gtk_bindings_activate_event (GObject *object,
1654 GSList *entries = NULL;
1655 GdkDisplay *display;
1656 GtkKeyHash *key_hash;
1657 gboolean handled = FALSE;
1659 if (!GTK_IS_WIDGET (object))
1662 display = gtk_widget_get_display (GTK_WIDGET (object));
1663 key_hash = binding_key_hash_for_keymap (gdk_keymap_get_for_display (display));
1665 entries = _gtk_key_hash_lookup (key_hash,
1666 event->hardware_keycode,
1668 BINDING_MOD_MASK () & ~GDK_RELEASE_MASK,
1671 handled = gtk_bindings_activate_list (object, entries,
1672 event->type == GDK_KEY_RELEASE);
1674 g_slist_free (entries);