1 /* gtkcombo - combo widget for gtk+
2 * Copyright 1997 Paolo Molaro
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.
21 * Modified by the GTK+ Team and others 1997-2000. See the AUTHORS
22 * file for a list of people on the GTK+ Team. See the ChangeLog
23 * files for a list of changes. These files are distributed with
24 * GTK+ at ftp://ftp.gtk.org/pub/gtk/.
27 /* Do NOT, I repeat, NOT, copy any of the code in this file.
28 * The code here relies on all sorts of internal details of GTK+
31 #undef GTK_DISABLE_DEPRECATED
39 #include "gtkeventbox.h"
40 #include "gtkbutton.h"
41 #include "gtklistitem.h"
42 #include "gtkscrolledwindow.h"
44 #include "gtkwindow.h"
45 #include "gdk/gdkkeysyms.h"
50 const gchar *gtk_combo_string_key = "gtk-combo-string-value";
52 #define COMBO_LIST_MAX_HEIGHT (400)
53 #define EMPTY_LIST_HEIGHT (15)
57 PROP_ENABLE_ARROW_KEYS,
58 PROP_ENABLE_ARROWS_ALWAYS,
64 static void gtk_combo_class_init (GtkComboClass *klass);
65 static void gtk_combo_init (GtkCombo *combo);
66 static void gtk_combo_realize (GtkWidget *widget);
67 static void gtk_combo_unrealize (GtkWidget *widget);
68 static void gtk_combo_destroy (GtkObject *combo);
69 static GtkListItem *gtk_combo_find (GtkCombo *combo);
70 static gchar * gtk_combo_func (GtkListItem *li);
71 static gint gtk_combo_focus_idle (GtkCombo *combo);
72 static gint gtk_combo_entry_focus_out (GtkEntry *entry,
75 static void gtk_combo_get_pos (GtkCombo *combo,
80 static void gtk_combo_popup_list (GtkCombo *combo);
81 static void gtk_combo_popdown_list (GtkCombo *combo);
83 static void gtk_combo_activate (GtkWidget *widget,
85 static gboolean gtk_combo_popup_button_press (GtkWidget *button,
86 GdkEventButton *event,
88 static gboolean gtk_combo_popup_button_leave (GtkWidget *button,
89 GdkEventCrossing *event,
91 static void gtk_combo_update_entry (GtkCombo *combo);
92 static void gtk_combo_update_list (GtkEntry *entry,
94 static gint gtk_combo_button_press (GtkWidget *widget,
97 static void gtk_combo_button_event_after (GtkWidget *widget,
100 static gint gtk_combo_list_enter (GtkWidget *widget,
101 GdkEventCrossing *event,
103 static gint gtk_combo_list_key_press (GtkWidget *widget,
106 static gint gtk_combo_entry_key_press (GtkEntry *widget,
109 static gint gtk_combo_window_key_press (GtkWidget *window,
112 static void gtk_combo_size_allocate (GtkWidget *widget,
113 GtkAllocation *allocation);
114 static void gtk_combo_set_property (GObject *object,
118 static void gtk_combo_get_property (GObject *object,
122 static GtkHBoxClass *parent_class = NULL;
125 gtk_combo_class_init (GtkComboClass * klass)
127 GObjectClass *gobject_class;
128 GtkObjectClass *oclass;
129 GtkWidgetClass *widget_class;
131 gobject_class = (GObjectClass *) klass;
132 oclass = (GtkObjectClass *) klass;
133 widget_class = (GtkWidgetClass *) klass;
135 parent_class = g_type_class_peek_parent (klass);
137 gobject_class->set_property = gtk_combo_set_property;
138 gobject_class->get_property = gtk_combo_get_property;
140 g_object_class_install_property (gobject_class,
141 PROP_ENABLE_ARROW_KEYS,
142 g_param_spec_boolean ("enable_arrow_keys",
143 _("Enable arrow keys"),
144 _("Whether the arrow keys move through the list of items"),
146 G_PARAM_READABLE | G_PARAM_WRITABLE));
147 g_object_class_install_property (gobject_class,
148 PROP_ENABLE_ARROWS_ALWAYS,
149 g_param_spec_boolean ("enable_arrows_always",
150 _("Always enable arrows"),
151 _("Obsolete property, ignored"),
153 G_PARAM_READABLE | G_PARAM_WRITABLE));
154 g_object_class_install_property (gobject_class,
156 g_param_spec_boolean ("case_sensitive",
158 _("Whether list item matching is case sensitive"),
160 G_PARAM_READABLE | G_PARAM_WRITABLE));
162 g_object_class_install_property (gobject_class,
164 g_param_spec_boolean ("allow_empty",
166 _("Whether an empty value may be entered in this field"),
168 G_PARAM_READABLE | G_PARAM_WRITABLE));
170 g_object_class_install_property (gobject_class,
172 g_param_spec_boolean ("value_in_list",
174 _("Whether entered values must already be present in the list"),
176 G_PARAM_READABLE | G_PARAM_WRITABLE));
179 oclass->destroy = gtk_combo_destroy;
181 widget_class->size_allocate = gtk_combo_size_allocate;
182 widget_class->realize = gtk_combo_realize;
183 widget_class->unrealize = gtk_combo_unrealize;
187 gtk_combo_destroy (GtkObject *object)
189 GtkCombo *combo = GTK_COMBO (object);
193 gtk_widget_destroy (combo->popwin);
194 g_object_unref (combo->popwin);
195 combo->popwin = NULL;
198 GTK_OBJECT_CLASS (parent_class)->destroy (object);
202 gtk_combo_entry_key_press (GtkEntry * entry, GdkEventKey * event, GtkCombo * combo)
205 guint state = event->state & gtk_accelerator_get_default_mod_mask ();
208 if ((event->keyval == GDK_Tab || event->keyval == GDK_KP_Tab) &&
209 state == GDK_MOD1_MASK)
211 GtkEditable *editable = GTK_EDITABLE (entry);
214 gchar* nprefix = NULL;
217 if ( !GTK_LIST (combo->list)->children )
220 cmpl = g_completion_new ((GCompletionFunc)gtk_combo_func);
221 g_completion_add_items (cmpl, GTK_LIST (combo->list)->children);
223 pos = gtk_editable_get_position (editable);
224 prefix = gtk_editable_get_chars (editable, 0, pos);
226 g_completion_complete (cmpl, prefix, &nprefix);
228 if (nprefix && strlen (nprefix) > strlen (prefix))
230 gtk_editable_insert_text (editable, nprefix + pos,
231 strlen (nprefix) - strlen (prefix), &pos);
232 gtk_editable_set_position (editable, pos);
238 g_completion_free (cmpl);
243 if ((event->keyval == GDK_Down || event->keyval == GDK_KP_Down) &&
244 state == GDK_MOD1_MASK)
246 gtk_combo_activate (NULL, combo);
250 if (!combo->use_arrows || !GTK_LIST (combo->list)->children)
253 gtk_combo_update_list (GTK_ENTRY (combo->entry), combo);
254 li = g_list_find (GTK_LIST (combo->list)->children, gtk_combo_find (combo));
256 if (((event->keyval == GDK_Up || event->keyval == GDK_KP_Up) && state == 0) ||
257 ((event->keyval == 'p' || event->keyval == 'P') && state == GDK_MOD1_MASK))
260 li = g_list_last (GTK_LIST (combo->list)->children);
266 gtk_list_select_child (GTK_LIST (combo->list), GTK_WIDGET (li->data));
267 gtk_combo_update_entry (combo);
272 if (((event->keyval == GDK_Down || event->keyval == GDK_KP_Down) && state == 0) ||
273 ((event->keyval == 'n' || event->keyval == 'N') && state == GDK_MOD1_MASK))
276 li = GTK_LIST (combo->list)->children;
281 gtk_list_select_child (GTK_LIST (combo->list), GTK_WIDGET (li->data));
282 gtk_combo_update_entry (combo);
291 gtk_combo_window_key_press (GtkWidget *window,
295 guint state = event->state & gtk_accelerator_get_default_mod_mask ();
297 if ((event->keyval == GDK_Return || event->keyval == GDK_KP_Enter) &&
300 gtk_combo_popdown_list (combo);
301 gtk_combo_update_entry (combo);
305 else if ((event->keyval == GDK_Up || event->keyval == GDK_KP_Up) &&
306 state == GDK_MOD1_MASK)
308 gtk_combo_popdown_list (combo);
312 else if ((event->keyval == GDK_space || event->keyval == GDK_KP_Space) &&
315 gtk_combo_update_entry (combo);
322 gtk_combo_find (GtkCombo * combo)
325 GtkListItem *found = NULL;
330 text = gtk_entry_get_text (GTK_ENTRY (combo->entry));
331 if (combo->case_sensitive)
332 compare_text = (gchar *)text;
334 compare_text = g_utf8_casefold (text, -1);
336 for (clist = GTK_LIST (combo->list)->children;
340 ltext = gtk_combo_func (GTK_LIST_ITEM (clist->data));
344 if (!combo->case_sensitive)
345 ltext = g_utf8_casefold (ltext, -1);
347 if (strcmp (ltext, compare_text) == 0)
350 if (!combo->case_sensitive)
354 if (!combo->case_sensitive)
355 g_free (compare_text);
361 gtk_combo_func (GtkListItem * li)
366 ltext = g_object_get_data (G_OBJECT (li), gtk_combo_string_key);
369 label = GTK_BIN (li)->child;
370 if (!label || !GTK_IS_LABEL (label))
372 ltext = (gchar *) gtk_label_get_text (GTK_LABEL (label));
378 gtk_combo_focus_idle (GtkCombo * combo)
382 GDK_THREADS_ENTER ();
383 gtk_widget_grab_focus (combo->entry);
384 GDK_THREADS_LEAVE ();
390 gtk_combo_entry_focus_out (GtkEntry * entry, GdkEventFocus * event, GtkCombo * combo)
393 if (combo->value_in_list && !gtk_combo_find (combo))
397 /* gdk_beep(); *//* this can be annoying */
398 if (combo->ok_if_empty && !strcmp (gtk_entry_get_text (entry), ""))
401 printf ("INVALID ENTRY: `%s'\n", gtk_entry_get_text (entry));
403 gtk_grab_add (GTK_WIDGET (combo));
404 /* this is needed because if we call gtk_widget_grab_focus()
405 it isn't guaranteed it's the *last* call before the main-loop,
406 so the focus can be lost anyway...
407 the signal_stop_emission doesn't seem to work either...
409 focus_idle = g_idle_source_new ();
410 g_source_set_closure (focus_idle,
411 g_cclosure_new_object (G_CALLBACK (gtk_combo_focus_idle),
413 g_source_attach (focus_idle, NULL);
415 /*g_signal_stop_emission_by_name (entry, "focus_out_event"); */
422 gtk_combo_get_pos (GtkCombo * combo, gint * x, gint * y, gint * height, gint * width)
426 GtkScrolledWindow *popup;
429 GtkRequisition list_requisition;
430 gboolean show_hscroll = FALSE;
431 gboolean show_vscroll = FALSE;
438 gint scrollbar_spacing;
440 widget = GTK_WIDGET (combo);
441 popup = GTK_SCROLLED_WINDOW (combo->popup);
442 popwin = GTK_BIN (combo->popwin);
444 scrollbar_spacing = _gtk_scrolled_window_get_scrollbar_spacing (popup);
446 gdk_window_get_origin (combo->entry->window, x, y);
447 real_height = MIN (combo->entry->requisition.height,
448 combo->entry->allocation.height);
450 avail_height = gdk_screen_get_height (gtk_widget_get_screen (widget)) - *y;
452 gtk_widget_size_request (combo->list, &list_requisition);
453 min_height = MIN (list_requisition.height,
454 popup->vscrollbar->requisition.height);
455 if (!GTK_LIST (combo->list)->children)
456 list_requisition.height += EMPTY_LIST_HEIGHT;
458 alloc_width = (widget->allocation.width -
459 2 * popwin->child->style->xthickness -
460 2 * GTK_CONTAINER (popwin->child)->border_width -
461 2 * GTK_CONTAINER (combo->popup)->border_width -
462 2 * GTK_CONTAINER (GTK_BIN (popup)->child)->border_width -
463 2 * GTK_BIN (popup)->child->style->xthickness);
465 work_height = (2 * popwin->child->style->ythickness +
466 2 * GTK_CONTAINER (popwin->child)->border_width +
467 2 * GTK_CONTAINER (combo->popup)->border_width +
468 2 * GTK_CONTAINER (GTK_BIN (popup)->child)->border_width +
469 2 * GTK_BIN (popup)->child->style->ythickness);
473 old_width = alloc_width;
474 old_height = work_height;
477 alloc_width < list_requisition.width)
479 GtkRequisition requisition;
481 gtk_widget_size_request (popup->hscrollbar, &requisition);
482 work_height += (requisition.height + scrollbar_spacing);
487 work_height + list_requisition.height > avail_height)
489 GtkRequisition requisition;
491 if (work_height + min_height > avail_height &&
492 *y - real_height > avail_height)
494 *y -= (work_height + list_requisition.height + real_height);
497 gtk_widget_size_request (popup->hscrollbar, &requisition);
498 alloc_width -= (requisition.width + scrollbar_spacing);
501 } while (old_width != alloc_width || old_height != work_height);
503 *width = widget->allocation.width;
505 *height = avail_height;
507 *height = work_height + list_requisition.height;
514 gtk_combo_popup_list (GtkCombo * combo)
517 gint height, width, x, y;
518 gint old_width, old_height;
520 old_width = combo->popwin->allocation.width;
521 old_height = combo->popwin->allocation.height;
523 gtk_combo_get_pos (combo, &x, &y, &height, &width);
525 /* workaround for gtk_scrolled_window_size_allocate bug */
526 if (old_width != width || old_height != height)
528 gtk_widget_hide (GTK_SCROLLED_WINDOW (combo->popup)->hscrollbar);
529 gtk_widget_hide (GTK_SCROLLED_WINDOW (combo->popup)->vscrollbar);
532 gtk_combo_update_list (GTK_ENTRY (combo->entry), combo);
534 /* We need to make sure some child of combo->popwin
535 * is focused to disable GtkWindow's automatic
536 * "focus-the-first-item" code. If there is no selected
537 * child, we focus the list itself with some hackery.
539 list = GTK_LIST (combo->list);
543 gtk_widget_grab_focus (list->selection->data);
547 GTK_WIDGET_SET_FLAGS (list, GTK_CAN_FOCUS);
548 gtk_widget_grab_focus (combo->list);
549 GTK_LIST (combo->list)->last_focus_child = NULL;
550 GTK_WIDGET_UNSET_FLAGS (list, GTK_CAN_FOCUS);
553 gtk_window_move (GTK_WINDOW (combo->popwin), x, y);
554 gtk_widget_set_size_request (combo->popwin, width, height);
555 gtk_widget_show (combo->popwin);
557 gtk_widget_grab_focus (combo->popwin);
561 gtk_combo_popdown_list (GtkCombo *combo)
563 combo->current_button = 0;
565 if (GTK_BUTTON (combo->button)->in_button)
567 GTK_BUTTON (combo->button)->in_button = FALSE;
568 gtk_button_released (GTK_BUTTON (combo->button));
571 if (GTK_WIDGET_HAS_GRAB (combo->popwin))
573 gtk_grab_remove (combo->popwin);
574 gdk_display_pointer_ungrab (gtk_widget_get_display (GTK_WIDGET (combo)),
575 gtk_get_current_event_time ());
576 gdk_display_keyboard_ungrab (gtk_widget_get_display (GTK_WIDGET (combo)),
577 gtk_get_current_event_time ());
580 gtk_widget_hide (combo->popwin);
584 popup_grab_on_window (GdkWindow *window,
585 guint32 activate_time)
587 if ((gdk_pointer_grab (window, TRUE,
588 GDK_BUTTON_PRESS_MASK | GDK_BUTTON_RELEASE_MASK |
589 GDK_POINTER_MOTION_MASK,
590 NULL, NULL, activate_time) == 0))
592 if (gdk_keyboard_grab (window, TRUE,
597 gdk_display_pointer_ungrab (gdk_drawable_get_display (window),
607 gtk_combo_activate (GtkWidget *widget,
610 if (!combo->button->window ||
611 !popup_grab_on_window (combo->button->window,
612 gtk_get_current_event_time ()))
615 gtk_combo_popup_list (combo);
617 /* This must succeed since we already have the grab */
618 popup_grab_on_window (combo->popwin->window,
619 gtk_get_current_event_time ());
621 if (!GTK_WIDGET_HAS_FOCUS (combo->entry))
622 gtk_widget_grab_focus (combo->entry);
624 gtk_grab_add (combo->popwin);
628 gtk_combo_popup_button_press (GtkWidget *button,
629 GdkEventButton *event,
632 if (!GTK_WIDGET_HAS_FOCUS (combo->entry))
633 gtk_widget_grab_focus (combo->entry);
635 if (event->button != 1)
638 if (!popup_grab_on_window (combo->button->window,
639 gtk_get_current_event_time ()))
642 combo->current_button = event->button;
644 gtk_combo_popup_list (combo);
646 /* This must succeed since we already have the grab */
647 popup_grab_on_window (combo->popwin->window,
648 gtk_get_current_event_time ());
650 gtk_button_pressed (GTK_BUTTON (button));
652 gtk_grab_add (combo->popwin);
658 gtk_combo_popup_button_leave (GtkWidget *button,
659 GdkEventCrossing *event,
662 /* The idea here is that we want to keep the button down if the
663 * popup is popped up.
665 return combo->current_button != 0;
669 gtk_combo_update_entry (GtkCombo * combo)
671 GtkList *list = GTK_LIST (combo->list);
674 g_signal_handler_block (list, combo->list_change_id);
677 text = gtk_combo_func (GTK_LIST_ITEM (list->selection->data));
680 gtk_entry_set_text (GTK_ENTRY (combo->entry), text);
682 g_signal_handler_unblock (list, combo->list_change_id);
686 gtk_combo_selection_changed (GtkList *list,
689 if (!GTK_WIDGET_VISIBLE (combo->popwin))
690 gtk_combo_update_entry (combo);
694 gtk_combo_update_list (GtkEntry * entry, GtkCombo * combo)
696 GtkList *list = GTK_LIST (combo->list);
697 GList *slist = list->selection;
700 gtk_grab_remove (GTK_WIDGET (combo));
702 g_signal_handler_block (entry, combo->entry_change_id);
703 if (slist && slist->data)
704 gtk_list_unselect_child (list, GTK_WIDGET (slist->data));
705 li = gtk_combo_find (combo);
707 gtk_list_select_child (list, GTK_WIDGET (li));
708 g_signal_handler_unblock (entry, combo->entry_change_id);
712 gtk_combo_button_press (GtkWidget * widget, GdkEvent * event, GtkCombo * combo)
716 child = gtk_get_event_widget (event);
718 /* We don't ask for button press events on the grab widget, so
719 * if an event is reported directly to the grab widget, it must
720 * be on a window outside the application (and thus we remove
721 * the popup window). Otherwise, we check if the widget is a child
722 * of the grab widget, and only remove the popup window if it
731 child = child->parent;
735 gtk_combo_popdown_list (combo);
741 is_within (GtkWidget *widget,
744 return widget == ancestor || gtk_widget_is_ancestor (widget, ancestor);
748 gtk_combo_button_event_after (GtkWidget *widget,
754 if (event->type != GDK_BUTTON_RELEASE)
757 child = gtk_get_event_widget ((GdkEvent*) event);
759 if ((combo->current_button != 0) && (event->button.button == 1))
761 /* This was the initial button press */
763 combo->current_button = 0;
765 /* Check to see if we released inside the button */
766 if (child && is_within (child, combo->button))
768 gtk_grab_add (combo->popwin);
769 gdk_pointer_grab (combo->popwin->window, TRUE,
770 GDK_BUTTON_PRESS_MASK |
771 GDK_BUTTON_RELEASE_MASK |
772 GDK_POINTER_MOTION_MASK,
773 NULL, NULL, GDK_CURRENT_TIME);
778 if (is_within (child, combo->list))
779 gtk_combo_update_entry (combo);
781 gtk_combo_popdown_list (combo);
786 find_child_foreach (GtkWidget *widget,
789 GdkEventButton *event = data;
793 if (event->x >= widget->allocation.x &&
794 event->x < widget->allocation.x + widget->allocation.width &&
795 event->y >= widget->allocation.y &&
796 event->y < widget->allocation.y + widget->allocation.height)
797 event->window = g_object_ref (widget->window);
802 find_child_window (GtkContainer *container,
803 GdkEventButton *event)
805 gtk_container_foreach (container, find_child_foreach, event);
809 gtk_combo_list_enter (GtkWidget *widget,
810 GdkEventCrossing *event,
813 GtkWidget *event_widget;
815 event_widget = gtk_get_event_widget ((GdkEvent*) event);
817 if ((event_widget == combo->list) &&
818 (combo->current_button != 0) &&
819 (!GTK_WIDGET_HAS_GRAB (combo->list)))
821 GdkEvent *tmp_event = gdk_event_new (GDK_BUTTON_PRESS);
823 GdkModifierType mask;
825 gtk_grab_remove (combo->popwin);
827 /* Transfer the grab over to the list by synthesizing
828 * a button press event
830 gdk_window_get_pointer (combo->list->window, &x, &y, &mask);
832 tmp_event->button.send_event = TRUE;
833 tmp_event->button.time = GDK_CURRENT_TIME; /* bad */
834 tmp_event->button.x = x;
835 tmp_event->button.y = y;
836 /* We leave all the XInput fields unfilled here, in the expectation
837 * that GtkList doesn't care.
839 tmp_event->button.button = combo->current_button;
840 tmp_event->button.state = mask;
842 find_child_window (GTK_CONTAINER (combo->list), &tmp_event->button);
843 if (!tmp_event->button.window)
847 if (GTK_LIST (combo->list)->children)
848 child = GTK_LIST (combo->list)->children->data;
852 tmp_event->button.window = g_object_ref (child->window);
855 gtk_widget_event (combo->list, tmp_event);
856 gdk_event_free (tmp_event);
863 gtk_combo_list_key_press (GtkWidget * widget, GdkEventKey * event, GtkCombo * combo)
865 guint state = event->state & gtk_accelerator_get_default_mod_mask ();
867 if (event->keyval == GDK_Escape && state == 0)
869 if (GTK_WIDGET_HAS_GRAB (combo->list))
870 gtk_list_end_drag_selection (GTK_LIST (combo->list));
872 gtk_combo_popdown_list (combo);
880 combo_event_box_realize (GtkWidget *widget)
882 GdkCursor *cursor = gdk_cursor_new_for_display (gtk_widget_get_display (widget),
884 gdk_window_set_cursor (widget->window, cursor);
885 gdk_cursor_unref (cursor);
889 gtk_combo_init (GtkCombo * combo)
893 GtkWidget *event_box;
895 combo->case_sensitive = FALSE;
896 combo->value_in_list = FALSE;
897 combo->ok_if_empty = TRUE;
898 combo->use_arrows = TRUE;
899 combo->use_arrows_always = FALSE;
900 combo->entry = gtk_entry_new ();
901 combo->button = gtk_button_new ();
902 combo->current_button = 0;
903 arrow = gtk_arrow_new (GTK_ARROW_DOWN, GTK_SHADOW_OUT);
904 gtk_widget_show (arrow);
905 gtk_container_add (GTK_CONTAINER (combo->button), arrow);
906 gtk_box_pack_start (GTK_BOX (combo), combo->entry, TRUE, TRUE, 0);
907 gtk_box_pack_end (GTK_BOX (combo), combo->button, FALSE, FALSE, 0);
908 GTK_WIDGET_UNSET_FLAGS (combo->button, GTK_CAN_FOCUS);
909 gtk_widget_show (combo->entry);
910 gtk_widget_show (combo->button);
911 combo->entry_change_id = g_signal_connect (combo->entry, "changed",
912 G_CALLBACK (gtk_combo_update_list),
914 g_signal_connect (combo->entry, "key_press_event",
915 G_CALLBACK (gtk_combo_entry_key_press), combo);
916 g_signal_connect_after (combo->entry, "focus_out_event",
917 G_CALLBACK (gtk_combo_entry_focus_out), combo);
918 combo->activate_id = g_signal_connect (combo->entry, "activate",
919 G_CALLBACK (gtk_combo_activate),
921 g_signal_connect (combo->button, "button_press_event",
922 G_CALLBACK (gtk_combo_popup_button_press), combo);
923 g_signal_connect (combo->button, "leave_notify_event",
924 G_CALLBACK (gtk_combo_popup_button_leave), combo);
926 combo->popwin = gtk_window_new (GTK_WINDOW_POPUP);
927 g_object_ref (combo->popwin);
928 gtk_window_set_resizable (GTK_WINDOW (combo->popwin), FALSE);
930 g_signal_connect (combo->popwin, "key_press_event",
931 G_CALLBACK (gtk_combo_window_key_press), combo);
933 gtk_widget_set_events (combo->popwin, GDK_KEY_PRESS_MASK);
935 event_box = gtk_event_box_new ();
936 gtk_container_add (GTK_CONTAINER (combo->popwin), event_box);
937 g_signal_connect (event_box, "realize",
938 G_CALLBACK (combo_event_box_realize), NULL);
939 gtk_widget_show (event_box);
942 frame = gtk_frame_new (NULL);
943 gtk_container_add (GTK_CONTAINER (event_box), frame);
944 gtk_frame_set_shadow_type (GTK_FRAME (frame), GTK_SHADOW_OUT);
945 gtk_widget_show (frame);
947 combo->popup = gtk_scrolled_window_new (NULL, NULL);
948 gtk_scrolled_window_set_policy (GTK_SCROLLED_WINDOW (combo->popup),
949 GTK_POLICY_AUTOMATIC, GTK_POLICY_AUTOMATIC);
950 GTK_WIDGET_UNSET_FLAGS (GTK_SCROLLED_WINDOW (combo->popup)->hscrollbar, GTK_CAN_FOCUS);
951 GTK_WIDGET_UNSET_FLAGS (GTK_SCROLLED_WINDOW (combo->popup)->vscrollbar, GTK_CAN_FOCUS);
952 gtk_container_add (GTK_CONTAINER (frame), combo->popup);
953 gtk_widget_show (combo->popup);
955 combo->list = gtk_list_new ();
956 /* We'll use enter notify events to figure out when to transfer
957 * the grab to the list
959 gtk_widget_set_events (combo->list, GDK_ENTER_NOTIFY_MASK);
961 gtk_list_set_selection_mode (GTK_LIST(combo->list), GTK_SELECTION_BROWSE);
962 gtk_scrolled_window_add_with_viewport (GTK_SCROLLED_WINDOW (combo->popup), combo->list);
963 gtk_container_set_focus_vadjustment (GTK_CONTAINER (combo->list),
964 gtk_scrolled_window_get_vadjustment (GTK_SCROLLED_WINDOW (combo->popup)));
965 gtk_container_set_focus_hadjustment (GTK_CONTAINER (combo->list),
966 gtk_scrolled_window_get_hadjustment (GTK_SCROLLED_WINDOW (combo->popup)));
967 gtk_widget_show (combo->list);
969 combo->list_change_id = g_signal_connect (combo->list, "selection_changed",
970 G_CALLBACK (gtk_combo_selection_changed), combo);
972 g_signal_connect (combo->popwin, "key_press_event",
973 G_CALLBACK (gtk_combo_list_key_press), combo);
974 g_signal_connect (combo->popwin, "button_press_event",
975 G_CALLBACK (gtk_combo_button_press), combo);
977 g_signal_connect (combo->popwin, "event_after",
978 G_CALLBACK (gtk_combo_button_event_after), combo);
979 g_signal_connect (combo->list, "event_after",
980 G_CALLBACK (gtk_combo_button_event_after), combo);
982 g_signal_connect (combo->list, "enter_notify_event",
983 G_CALLBACK (gtk_combo_list_enter), combo);
987 gtk_combo_realize (GtkWidget *widget)
989 GtkCombo *combo = GTK_COMBO (widget);
991 gtk_window_set_screen (GTK_WINDOW (combo->popwin),
992 gtk_widget_get_screen (widget));
994 GTK_WIDGET_CLASS( parent_class )->realize (widget);
998 gtk_combo_unrealize (GtkWidget *widget)
1000 GtkCombo *combo = GTK_COMBO (widget);
1002 gtk_combo_popdown_list (combo);
1003 gtk_widget_unrealize (combo->popwin);
1005 GTK_WIDGET_CLASS (parent_class)->unrealize (widget);
1009 gtk_combo_get_type (void)
1011 static GType combo_type = 0;
1015 static const GTypeInfo combo_info =
1017 sizeof (GtkComboClass),
1018 NULL, /* base_init */
1019 NULL, /* base_finalize */
1020 (GClassInitFunc) gtk_combo_class_init,
1021 NULL, /* class_finalize */
1022 NULL, /* class_data */
1024 0, /* n_preallocs */
1025 (GInstanceInitFunc) gtk_combo_init,
1028 combo_type = g_type_register_static (GTK_TYPE_HBOX, "GtkCombo",
1036 gtk_combo_new (void)
1038 return g_object_new (GTK_TYPE_COMBO, NULL);
1042 gtk_combo_set_value_in_list (GtkCombo * combo, gboolean val, gboolean ok_if_empty)
1044 g_return_if_fail (GTK_IS_COMBO (combo));
1046 ok_if_empty = ok_if_empty != FALSE;
1048 g_object_freeze_notify (G_OBJECT (combo));
1049 if (combo->value_in_list != val)
1051 combo->value_in_list = val;
1052 g_object_notify (G_OBJECT (combo), "value_in_list");
1054 if (combo->ok_if_empty != ok_if_empty)
1056 combo->ok_if_empty = ok_if_empty;
1057 g_object_notify (G_OBJECT (combo), "allow_empty");
1059 g_object_thaw_notify (G_OBJECT (combo));
1063 gtk_combo_set_case_sensitive (GtkCombo * combo, gboolean val)
1065 g_return_if_fail (GTK_IS_COMBO (combo));
1068 if (combo->case_sensitive != val)
1070 combo->case_sensitive = val;
1071 g_object_notify (G_OBJECT (combo), "case_sensitive");
1076 gtk_combo_set_use_arrows (GtkCombo * combo, gboolean val)
1078 g_return_if_fail (GTK_IS_COMBO (combo));
1081 if (combo->use_arrows != val)
1083 combo->use_arrows = val;
1084 g_object_notify (G_OBJECT (combo), "enable_arrow_keys");
1089 gtk_combo_set_use_arrows_always (GtkCombo * combo, gboolean val)
1091 g_return_if_fail (GTK_IS_COMBO (combo));
1094 if (combo->use_arrows_always != val)
1096 g_object_freeze_notify (G_OBJECT (combo));
1097 combo->use_arrows_always = val;
1098 g_object_notify (G_OBJECT (combo), "enable_arrows_always");
1100 if (combo->use_arrows != TRUE)
1102 combo->use_arrows = TRUE;
1103 g_object_notify (G_OBJECT (combo), "enable_arrow_keys");
1105 g_object_thaw_notify (G_OBJECT (combo));
1110 gtk_combo_set_popdown_strings (GtkCombo * combo, GList * strings)
1115 g_return_if_fail (GTK_IS_COMBO (combo));
1116 g_return_if_fail (strings != NULL);
1118 gtk_combo_popdown_list (combo);
1120 gtk_list_clear_items (GTK_LIST (combo->list), 0, -1);
1124 li = gtk_list_item_new_with_label ((gchar *) list->data);
1125 gtk_widget_show (li);
1126 gtk_container_add (GTK_CONTAINER (combo->list), li);
1132 gtk_combo_set_item_string (GtkCombo * combo, GtkItem * item, const gchar * item_value)
1134 g_return_if_fail (GTK_IS_COMBO (combo));
1135 g_return_if_fail (item != NULL);
1137 g_object_set_data_full (G_OBJECT (item), gtk_combo_string_key,
1138 g_strdup (item_value), g_free);
1142 gtk_combo_size_allocate (GtkWidget *widget,
1143 GtkAllocation *allocation)
1147 g_return_if_fail (GTK_IS_COMBO (widget));
1148 g_return_if_fail (allocation != NULL);
1150 GTK_WIDGET_CLASS (parent_class)->size_allocate (widget, allocation);
1152 combo = GTK_COMBO (widget);
1154 if (combo->entry->allocation.height > combo->entry->requisition.height)
1156 GtkAllocation button_allocation;
1158 button_allocation = combo->button->allocation;
1159 button_allocation.height = combo->entry->requisition.height;
1160 button_allocation.y = combo->entry->allocation.y +
1161 (combo->entry->allocation.height - combo->entry->requisition.height)
1163 gtk_widget_size_allocate (combo->button, &button_allocation);
1168 gtk_combo_disable_activate (GtkCombo* combo)
1170 g_return_if_fail (GTK_IS_COMBO (combo));
1172 if ( combo->activate_id ) {
1173 g_signal_handler_disconnect (combo->entry, combo->activate_id);
1174 combo->activate_id = 0;
1179 gtk_combo_set_property (GObject *object,
1181 const GValue *value,
1184 GtkCombo *combo = GTK_COMBO (object);
1188 case PROP_ENABLE_ARROW_KEYS:
1189 gtk_combo_set_use_arrows (combo, g_value_get_boolean (value));
1191 case PROP_ENABLE_ARROWS_ALWAYS:
1192 gtk_combo_set_use_arrows_always (combo, g_value_get_boolean (value));
1194 case PROP_CASE_SENSITIVE:
1195 gtk_combo_set_case_sensitive (combo, g_value_get_boolean (value));
1197 case PROP_ALLOW_EMPTY:
1198 combo->ok_if_empty = g_value_get_boolean (value);
1200 case PROP_VALUE_IN_LIST:
1201 combo->value_in_list = g_value_get_boolean (value);
1204 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
1211 gtk_combo_get_property (GObject *object,
1216 GtkCombo *combo = GTK_COMBO (object);
1220 case PROP_ENABLE_ARROW_KEYS:
1221 g_value_set_boolean (value, combo->use_arrows);
1223 case PROP_ENABLE_ARROWS_ALWAYS:
1224 g_value_set_boolean (value, combo->use_arrows_always);
1226 case PROP_CASE_SENSITIVE:
1227 g_value_set_boolean (value, combo->case_sensitive);
1229 case PROP_ALLOW_EMPTY:
1230 g_value_set_boolean (value, combo->ok_if_empty);
1232 case PROP_VALUE_IN_LIST:
1233 g_value_set_boolean (value, combo->value_in_list);
1236 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);