1 /* GTK - The GIMP Toolkit
2 * Copyright (C) 2000 Red Hat, Inc.
4 * This library is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU Lesser General Public
6 * License as published by the Free Software Foundation; either
7 * version 2 of the License, or (at your option) any later version.
9 * This library is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * Lesser General Public License for more details.
14 * You should have received a copy of the GNU Lesser General Public
15 * License along with this library; if not, write to the
16 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
17 * Boston, MA 02111-1307, USA.
25 #include "gtkimmulticontext.h"
26 #include "gtkimmodule.h"
28 #include "gtkradiomenuitem.h"
30 #include "gtkprivate.h" /* To get redefinition of GTK_LOCALE_DIR on Win32 */
32 #define NONE_ID "gtk-im-context-none"
34 struct _GtkIMMulticontextPrivate
36 GdkWindow *client_window;
37 GdkRectangle cursor_location;
40 guint use_preedit : 1;
41 guint have_cursor_location : 1;
45 static void gtk_im_multicontext_finalize (GObject *object);
47 static void gtk_im_multicontext_set_slave (GtkIMMulticontext *multicontext,
51 static void gtk_im_multicontext_set_client_window (GtkIMContext *context,
53 static void gtk_im_multicontext_get_preedit_string (GtkIMContext *context,
55 PangoAttrList **attrs,
57 static gboolean gtk_im_multicontext_filter_keypress (GtkIMContext *context,
59 static void gtk_im_multicontext_focus_in (GtkIMContext *context);
60 static void gtk_im_multicontext_focus_out (GtkIMContext *context);
61 static void gtk_im_multicontext_reset (GtkIMContext *context);
62 static void gtk_im_multicontext_set_cursor_location (GtkIMContext *context,
64 static void gtk_im_multicontext_set_use_preedit (GtkIMContext *context,
65 gboolean use_preedit);
66 static gboolean gtk_im_multicontext_get_surrounding (GtkIMContext *context,
69 static void gtk_im_multicontext_set_surrounding (GtkIMContext *context,
74 static void gtk_im_multicontext_preedit_start_cb (GtkIMContext *slave,
75 GtkIMMulticontext *multicontext);
76 static void gtk_im_multicontext_preedit_end_cb (GtkIMContext *slave,
77 GtkIMMulticontext *multicontext);
78 static void gtk_im_multicontext_preedit_changed_cb (GtkIMContext *slave,
79 GtkIMMulticontext *multicontext);
80 static void gtk_im_multicontext_commit_cb (GtkIMContext *slave,
82 GtkIMMulticontext *multicontext);
83 static gboolean gtk_im_multicontext_retrieve_surrounding_cb (GtkIMContext *slave,
84 GtkIMMulticontext *multicontext);
85 static gboolean gtk_im_multicontext_delete_surrounding_cb (GtkIMContext *slave,
88 GtkIMMulticontext *multicontext);
90 static const gchar *global_context_id = NULL;
92 G_DEFINE_TYPE (GtkIMMulticontext, gtk_im_multicontext, GTK_TYPE_IM_CONTEXT)
95 gtk_im_multicontext_class_init (GtkIMMulticontextClass *class)
97 GObjectClass *gobject_class = G_OBJECT_CLASS (class);
98 GtkIMContextClass *im_context_class = GTK_IM_CONTEXT_CLASS (class);
100 im_context_class->set_client_window = gtk_im_multicontext_set_client_window;
101 im_context_class->get_preedit_string = gtk_im_multicontext_get_preedit_string;
102 im_context_class->filter_keypress = gtk_im_multicontext_filter_keypress;
103 im_context_class->focus_in = gtk_im_multicontext_focus_in;
104 im_context_class->focus_out = gtk_im_multicontext_focus_out;
105 im_context_class->reset = gtk_im_multicontext_reset;
106 im_context_class->set_cursor_location = gtk_im_multicontext_set_cursor_location;
107 im_context_class->set_use_preedit = gtk_im_multicontext_set_use_preedit;
108 im_context_class->set_surrounding = gtk_im_multicontext_set_surrounding;
109 im_context_class->get_surrounding = gtk_im_multicontext_get_surrounding;
111 gobject_class->finalize = gtk_im_multicontext_finalize;
113 g_type_class_add_private (gobject_class, sizeof (GtkIMMulticontextPrivate));
117 gtk_im_multicontext_init (GtkIMMulticontext *multicontext)
119 multicontext->slave = NULL;
121 multicontext->priv = G_TYPE_INSTANCE_GET_PRIVATE (multicontext, GTK_TYPE_IM_MULTICONTEXT, GtkIMMulticontextPrivate);
122 multicontext->priv->use_preedit = TRUE;
123 multicontext->priv->have_cursor_location = FALSE;
124 multicontext->priv->focus_in = FALSE;
128 * gtk_im_multicontext_new:
130 * Creates a new #GtkIMMulticontext.
132 * Returns: a new #GtkIMMulticontext.
135 gtk_im_multicontext_new (void)
137 return g_object_new (GTK_TYPE_IM_MULTICONTEXT, NULL);
141 gtk_im_multicontext_finalize (GObject *object)
143 GtkIMMulticontext *multicontext = GTK_IM_MULTICONTEXT (object);
145 gtk_im_multicontext_set_slave (multicontext, NULL, TRUE);
146 g_free (multicontext->context_id);
147 g_free (multicontext->priv->context_id);
149 G_OBJECT_CLASS (gtk_im_multicontext_parent_class)->finalize (object);
153 gtk_im_multicontext_set_slave (GtkIMMulticontext *multicontext,
157 GtkIMMulticontextPrivate *priv = multicontext->priv;
158 gboolean need_preedit_changed = FALSE;
160 if (multicontext->slave)
163 gtk_im_context_reset (multicontext->slave);
165 g_signal_handlers_disconnect_by_func (multicontext->slave,
166 gtk_im_multicontext_preedit_start_cb,
168 g_signal_handlers_disconnect_by_func (multicontext->slave,
169 gtk_im_multicontext_preedit_end_cb,
171 g_signal_handlers_disconnect_by_func (multicontext->slave,
172 gtk_im_multicontext_preedit_changed_cb,
174 g_signal_handlers_disconnect_by_func (multicontext->slave,
175 gtk_im_multicontext_commit_cb,
178 g_object_unref (multicontext->slave);
179 multicontext->slave = NULL;
182 need_preedit_changed = TRUE;
185 multicontext->slave = slave;
187 if (multicontext->slave)
189 g_object_ref (multicontext->slave);
191 g_signal_connect (multicontext->slave, "preedit-start",
192 G_CALLBACK (gtk_im_multicontext_preedit_start_cb),
194 g_signal_connect (multicontext->slave, "preedit-end",
195 G_CALLBACK (gtk_im_multicontext_preedit_end_cb),
197 g_signal_connect (multicontext->slave, "preedit-changed",
198 G_CALLBACK (gtk_im_multicontext_preedit_changed_cb),
200 g_signal_connect (multicontext->slave, "commit",
201 G_CALLBACK (gtk_im_multicontext_commit_cb),
203 g_signal_connect (multicontext->slave, "retrieve-surrounding",
204 G_CALLBACK (gtk_im_multicontext_retrieve_surrounding_cb),
206 g_signal_connect (multicontext->slave, "delete-surrounding",
207 G_CALLBACK (gtk_im_multicontext_delete_surrounding_cb),
210 if (!priv->use_preedit) /* Default is TRUE */
211 gtk_im_context_set_use_preedit (slave, FALSE);
212 if (priv->client_window)
213 gtk_im_context_set_client_window (slave, priv->client_window);
214 if (priv->have_cursor_location)
215 gtk_im_context_set_cursor_location (slave, &priv->cursor_location);
217 gtk_im_context_focus_in (slave);
220 if (need_preedit_changed)
221 g_signal_emit_by_name (multicontext, "preedit-changed");
225 get_effective_context_id (GtkIMMulticontext *multicontext)
227 if (multicontext->priv->context_id)
228 return multicontext->priv->context_id;
230 if (!global_context_id)
231 global_context_id = _gtk_im_module_get_default_context_id (multicontext->priv->client_window);
233 return global_context_id;
236 static GtkIMContext *
237 gtk_im_multicontext_get_slave (GtkIMMulticontext *multicontext)
239 if (!multicontext->slave)
243 g_free (multicontext->context_id);
245 multicontext->context_id = g_strdup (get_effective_context_id (multicontext));
247 if (g_strcmp0 (multicontext->context_id, NONE_ID) == 0)
250 slave = _gtk_im_module_create (multicontext->context_id);
251 gtk_im_multicontext_set_slave (multicontext, slave, FALSE);
252 g_object_unref (slave);
255 return multicontext->slave;
259 im_module_setting_changed (GtkSettings *settings,
262 global_context_id = NULL;
267 gtk_im_multicontext_set_client_window (GtkIMContext *context,
270 GtkIMMulticontext *multicontext = GTK_IM_MULTICONTEXT (context);
272 GtkSettings *settings;
275 multicontext->priv->client_window = window;
279 screen = gdk_drawable_get_screen (GDK_DRAWABLE (window));
280 settings = gtk_settings_get_for_screen (screen);
282 connected = GPOINTER_TO_INT (g_object_get_data (G_OBJECT (settings),
283 "gtk-im-module-connected"));
286 g_signal_connect (settings, "notify::gtk-im-module",
287 G_CALLBACK (im_module_setting_changed), NULL);
288 g_object_set_data (G_OBJECT (settings), "gtk-im-module-connected",
289 GINT_TO_POINTER (TRUE));
291 global_context_id = NULL;
295 if (g_strcmp0 (multicontext->context_id, get_effective_context_id (multicontext)) != 0)
296 gtk_im_multicontext_set_slave (multicontext, NULL, FALSE);
298 if (multicontext->slave)
299 gtk_im_context_set_client_window (multicontext->slave, window);
303 gtk_im_multicontext_get_preedit_string (GtkIMContext *context,
305 PangoAttrList **attrs,
308 GtkIMMulticontext *multicontext = GTK_IM_MULTICONTEXT (context);
309 GtkIMContext *slave = gtk_im_multicontext_get_slave (multicontext);
312 gtk_im_context_get_preedit_string (slave, str, attrs, cursor_pos);
316 *str = g_strdup ("");
318 *attrs = pango_attr_list_new ();
323 gtk_im_multicontext_filter_keypress (GtkIMContext *context,
326 GtkIMMulticontext *multicontext = GTK_IM_MULTICONTEXT (context);
327 GtkIMContext *slave = gtk_im_multicontext_get_slave (multicontext);
330 return gtk_im_context_filter_keypress (slave, event);
331 else if (event->type == GDK_KEY_PRESS &&
332 (event->state & (GDK_MOD1_MASK | GDK_CONTROL_MASK)) == 0)
336 ch = gdk_keyval_to_unicode (event->keyval);
342 len = g_unichar_to_utf8 (ch, buf);
345 g_signal_emit_by_name (multicontext, "commit", buf);
355 gtk_im_multicontext_focus_in (GtkIMContext *context)
357 GtkIMMulticontext *multicontext = GTK_IM_MULTICONTEXT (context);
360 if (g_strcmp0 (multicontext->context_id, get_effective_context_id (multicontext)) != 0)
361 gtk_im_multicontext_set_slave (multicontext, NULL, FALSE);
363 slave = gtk_im_multicontext_get_slave (multicontext);
365 multicontext->priv->focus_in = TRUE;
368 gtk_im_context_focus_in (slave);
372 gtk_im_multicontext_focus_out (GtkIMContext *context)
374 GtkIMMulticontext *multicontext = GTK_IM_MULTICONTEXT (context);
375 GtkIMContext *slave = gtk_im_multicontext_get_slave (multicontext);
377 multicontext->priv->focus_in = FALSE;
380 gtk_im_context_focus_out (slave);
384 gtk_im_multicontext_reset (GtkIMContext *context)
386 GtkIMMulticontext *multicontext = GTK_IM_MULTICONTEXT (context);
387 GtkIMContext *slave = gtk_im_multicontext_get_slave (multicontext);
390 gtk_im_context_reset (slave);
394 gtk_im_multicontext_set_cursor_location (GtkIMContext *context,
397 GtkIMMulticontext *multicontext = GTK_IM_MULTICONTEXT (context);
398 GtkIMContext *slave = gtk_im_multicontext_get_slave (multicontext);
400 multicontext->priv->have_cursor_location = TRUE;
401 multicontext->priv->cursor_location = *area;
404 gtk_im_context_set_cursor_location (slave, area);
408 gtk_im_multicontext_set_use_preedit (GtkIMContext *context,
409 gboolean use_preedit)
411 GtkIMMulticontext *multicontext = GTK_IM_MULTICONTEXT (context);
412 GtkIMContext *slave = gtk_im_multicontext_get_slave (multicontext);
414 use_preedit = use_preedit != FALSE;
416 multicontext->priv->use_preedit = use_preedit;
419 gtk_im_context_set_use_preedit (slave, use_preedit);
423 gtk_im_multicontext_get_surrounding (GtkIMContext *context,
427 GtkIMMulticontext *multicontext = GTK_IM_MULTICONTEXT (context);
428 GtkIMContext *slave = gtk_im_multicontext_get_slave (multicontext);
431 return gtk_im_context_get_surrounding (slave, text, cursor_index);
444 gtk_im_multicontext_set_surrounding (GtkIMContext *context,
449 GtkIMMulticontext *multicontext = GTK_IM_MULTICONTEXT (context);
450 GtkIMContext *slave = gtk_im_multicontext_get_slave (multicontext);
453 gtk_im_context_set_surrounding (slave, text, len, cursor_index);
457 gtk_im_multicontext_preedit_start_cb (GtkIMContext *slave,
458 GtkIMMulticontext *multicontext)
460 g_signal_emit_by_name (multicontext, "preedit-start");
464 gtk_im_multicontext_preedit_end_cb (GtkIMContext *slave,
465 GtkIMMulticontext *multicontext)
467 g_signal_emit_by_name (multicontext, "preedit-end");
471 gtk_im_multicontext_preedit_changed_cb (GtkIMContext *slave,
472 GtkIMMulticontext *multicontext)
474 g_signal_emit_by_name (multicontext, "preedit-changed");
478 gtk_im_multicontext_commit_cb (GtkIMContext *slave,
480 GtkIMMulticontext *multicontext)
482 g_signal_emit_by_name (multicontext, "commit", str);
486 gtk_im_multicontext_retrieve_surrounding_cb (GtkIMContext *slave,
487 GtkIMMulticontext *multicontext)
491 g_signal_emit_by_name (multicontext, "retrieve-surrounding", &result);
497 gtk_im_multicontext_delete_surrounding_cb (GtkIMContext *slave,
500 GtkIMMulticontext *multicontext)
504 g_signal_emit_by_name (multicontext, "delete-surrounding",
505 offset, n_chars, &result);
511 activate_cb (GtkWidget *menuitem,
512 GtkIMMulticontext *context)
514 if (GTK_CHECK_MENU_ITEM (menuitem)->active)
516 const gchar *id = g_object_get_data (G_OBJECT (menuitem), "gtk-context-id");
518 gtk_im_multicontext_set_context_id (context, id);
523 pathnamecmp (const char *a,
527 return strcmp (a, b);
529 /* Ignore case insensitivity, probably not that relevant here. Just
530 * make sure slash and backslash compare equal.
533 if ((G_IS_DIR_SEPARATOR (*a) && G_IS_DIR_SEPARATOR (*b)) ||
543 * gtk_im_multicontext_append_menuitems:
544 * @context: a #GtkIMMulticontext
545 * @menushell: a #GtkMenuShell
547 * Add menuitems for various available input methods to a menu;
548 * the menuitems, when selected, will switch the input method
549 * for the context and the global default input method.
552 gtk_im_multicontext_append_menuitems (GtkIMMulticontext *context,
553 GtkMenuShell *menushell)
555 const GtkIMContextInfo **contexts;
557 GSList *group = NULL;
558 GtkWidget *menuitem, *system_menuitem;
559 const char *system_context_id;
561 system_context_id = _gtk_im_module_get_default_context_id (context->priv->client_window);
562 system_menuitem = menuitem = gtk_radio_menu_item_new_with_label (group, C_("input method menu", "System"));
563 if (!context->priv->context_id)
564 gtk_check_menu_item_set_active (GTK_CHECK_MENU_ITEM (menuitem), TRUE);
565 group = gtk_radio_menu_item_get_group (GTK_RADIO_MENU_ITEM (menuitem));
566 g_object_set_data (G_OBJECT (menuitem), I_("gtk-context-id"), NULL);
567 g_signal_connect (menuitem, "activate", G_CALLBACK (activate_cb), context);
569 gtk_widget_show (menuitem);
570 gtk_menu_shell_append (menushell, menuitem);
572 menuitem = gtk_radio_menu_item_new_with_label (group, C_("input method menu", "None"));
573 if (g_strcmp0 (context->priv->context_id, NONE_ID) == 0)
574 gtk_check_menu_item_set_active (GTK_CHECK_MENU_ITEM (menuitem), TRUE);
575 g_object_set_data (G_OBJECT (menuitem), I_("gtk-context-id"), NONE_ID);
576 g_signal_connect (menuitem, "activate", G_CALLBACK (activate_cb), context);
577 gtk_widget_show (menuitem);
578 gtk_menu_shell_append (menushell, menuitem);
579 group = gtk_radio_menu_item_get_group (GTK_RADIO_MENU_ITEM (menuitem));
581 menuitem = gtk_separator_menu_item_new ();
582 gtk_widget_show (menuitem);
583 gtk_menu_shell_append (menushell, menuitem);
585 _gtk_im_module_list (&contexts, &n_contexts);
587 for (i = 0; i < n_contexts; i++)
589 const gchar *translated_name;
591 if (contexts[i]->domain && contexts[i]->domain[0])
593 if (strcmp (contexts[i]->domain, GETTEXT_PACKAGE) == 0)
595 /* Same translation domain as GTK+ */
596 if (!(contexts[i]->domain_dirname && contexts[i]->domain_dirname[0]) ||
597 pathnamecmp (contexts[i]->domain_dirname, GTK_LOCALEDIR) == 0)
599 /* Empty or NULL, domain directory, or same as
600 * GTK+. Input method may have a name in the GTK+
603 translated_name = _(contexts[i]->context_name);
607 /* Separate domain directory but the same
608 * translation domain as GTK+. We can't call
609 * bindtextdomain() as that would make GTK+ forget
612 g_warning ("Input method %s should not use GTK's translation domain %s",
613 contexts[i]->context_id, GETTEXT_PACKAGE);
614 /* Try translating the name in GTK+'s domain */
615 translated_name = _(contexts[i]->context_name);
618 else if (contexts[i]->domain_dirname && contexts[i]->domain_dirname[0])
619 /* Input method has own translation domain and message catalog */
621 bindtextdomain (contexts[i]->domain,
622 contexts[i]->domain_dirname);
623 #ifdef HAVE_BIND_TEXTDOMAIN_CODESET
624 bind_textdomain_codeset (contexts[i]->domain, "UTF-8");
626 translated_name = g_dgettext (contexts[i]->domain, contexts[i]->context_name);
630 /* Different translation domain, but no domain directory */
631 translated_name = contexts[i]->context_name;
635 /* Empty or NULL domain. We assume that input method does not
636 * want a translated name in this case.
638 translated_name = contexts[i]->context_name;
640 translated_name = contexts[i]->context_name;
642 menuitem = gtk_radio_menu_item_new_with_label (group,
645 if ((context->priv->context_id &&
646 strcmp (contexts[i]->context_id, context->priv->context_id) == 0))
647 gtk_check_menu_item_set_active (GTK_CHECK_MENU_ITEM (menuitem), TRUE);
649 if (strcmp (contexts[i]->context_id, system_context_id) == 0)
654 label = gtk_bin_get_child (GTK_BIN (system_menuitem));
655 text = g_strdup_printf (C_("input method menu", "System (%s)"), translated_name);
656 gtk_label_set_text (GTK_LABEL (label), text);
660 group = gtk_radio_menu_item_get_group (GTK_RADIO_MENU_ITEM (menuitem));
662 g_object_set_data (G_OBJECT (menuitem), I_("gtk-context-id"),
663 (char *)contexts[i]->context_id);
664 g_signal_connect (menuitem, "activate",
665 G_CALLBACK (activate_cb), context);
667 gtk_widget_show (menuitem);
668 gtk_menu_shell_append (menushell, menuitem);
675 * gtk_im_multicontext_get_context_id:
676 * @context: a #GtkIMMulticontext
678 * Gets the id of the currently active slave of the @context.
680 * Returns: the id of the currently active slave
685 gtk_im_multicontext_get_context_id (GtkIMMulticontext *context)
687 return context->context_id;
691 * gtk_im_multicontext_set_context_id:
692 * @context: a #GtkIMMulticontext
693 * @context_id: the id to use
695 * Sets the context id for @context.
697 * This causes the currently active slave of @context to be
698 * replaced by the slave corresponding to the new context id.
703 gtk_im_multicontext_set_context_id (GtkIMMulticontext *context,
704 const char *context_id)
706 gtk_im_context_reset (GTK_IM_CONTEXT (context));
707 g_free (context->priv->context_id);
708 context->priv->context_id = g_strdup (context_id);
709 gtk_im_multicontext_set_slave (context, NULL, FALSE);