/* gtkcombo - combo widget for gtk+ * Copyright 1997 Paolo Molaro * * 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/. */ /* Do NOT, I repeat, NOT, copy any of the code in this file. * The code here relies on all sorts of internal details of GTK+ */ #include #include "gtkarrow.h" #include "gtklabel.h" #include "gtklist.h" #include "gtkentry.h" #include "gtkeventbox.h" #include "gtkbutton.h" #include "gtklistitem.h" #include "gtkscrolledwindow.h" #include "gtkmain.h" #include "gtkwindow.h" #include "gdk/gdkkeysyms.h" #include "gtkcombo.h" #include "gtkframe.h" #include "gtkintl.h" const gchar *gtk_combo_string_key = "gtk-combo-string-value"; #define COMBO_LIST_MAX_HEIGHT (400) #define EMPTY_LIST_HEIGHT (15) enum { PROP_0, PROP_ENABLE_ARROW_KEYS, PROP_ENABLE_ARROWS_ALWAYS, PROP_CASE_SENSITIVE, PROP_ALLOW_EMPTY, PROP_VALUE_IN_LIST }; static void gtk_combo_class_init (GtkComboClass *klass); static void gtk_combo_init (GtkCombo *combo); static void gtk_combo_realize (GtkWidget *widget); static void gtk_combo_unrealize (GtkWidget *widget); static void gtk_combo_destroy (GtkObject *combo); static GtkListItem *gtk_combo_find (GtkCombo *combo); static gchar * gtk_combo_func (GtkListItem *li); static gint gtk_combo_focus_idle (GtkCombo *combo); static gint gtk_combo_entry_focus_out (GtkEntry *entry, GdkEventFocus *event, GtkCombo *combo); static void gtk_combo_get_pos (GtkCombo *combo, gint *x, gint *y, gint *height, gint *width); static void gtk_combo_popup_list (GtkCombo *combo); static void gtk_combo_popdown_list (GtkCombo *combo); static void gtk_combo_activate (GtkWidget *widget, GtkCombo *combo); static gboolean gtk_combo_popup_button_press (GtkWidget *button, GdkEventButton *event, GtkCombo *combo); static gboolean gtk_combo_popup_button_leave (GtkWidget *button, GdkEventCrossing *event, GtkCombo *combo); static void gtk_combo_update_entry (GtkCombo *combo); static void gtk_combo_update_list (GtkEntry *entry, GtkCombo *combo); static gint gtk_combo_button_press (GtkWidget *widget, GdkEvent *event, GtkCombo *combo); static void gtk_combo_button_event_after (GtkWidget *widget, GdkEvent *event, GtkCombo *combo); static gint gtk_combo_list_enter (GtkWidget *widget, GdkEventCrossing *event, GtkCombo *combo); static gint gtk_combo_list_key_press (GtkWidget *widget, GdkEventKey *event, GtkCombo *combo); static gint gtk_combo_entry_key_press (GtkEntry *widget, GdkEventKey *event, GtkCombo *combo); static gint gtk_combo_window_key_press (GtkWidget *window, GdkEventKey *event, GtkCombo *combo); static void gtk_combo_size_allocate (GtkWidget *widget, GtkAllocation *allocation); static void gtk_combo_set_property (GObject *object, guint prop_id, const GValue *value, GParamSpec *pspec); static void gtk_combo_get_property (GObject *object, guint prop_id, GValue *value, GParamSpec *pspec); static GtkHBoxClass *parent_class = NULL; static void gtk_combo_class_init (GtkComboClass * klass) { GObjectClass *gobject_class; GtkObjectClass *oclass; GtkWidgetClass *widget_class; gobject_class = (GObjectClass *) klass; oclass = (GtkObjectClass *) klass; widget_class = (GtkWidgetClass *) klass; parent_class = g_type_class_peek_parent (klass); gobject_class->set_property = gtk_combo_set_property; gobject_class->get_property = gtk_combo_get_property; g_object_class_install_property (gobject_class, PROP_ENABLE_ARROW_KEYS, g_param_spec_boolean ("enable_arrow_keys", _("Enable arrow keys"), _("Whether the arrow keys move through the list of items"), TRUE, G_PARAM_READABLE | G_PARAM_WRITABLE)); g_object_class_install_property (gobject_class, PROP_ENABLE_ARROWS_ALWAYS, g_param_spec_boolean ("enable_arrows_always", _("Always enable arrows"), _("Obsolete property, ignored"), TRUE, G_PARAM_READABLE | G_PARAM_WRITABLE)); g_object_class_install_property (gobject_class, PROP_CASE_SENSITIVE, g_param_spec_boolean ("case_sensitive", _("Case sensitive"), _("Whether list item matching is case sensitive"), FALSE, G_PARAM_READABLE | G_PARAM_WRITABLE)); g_object_class_install_property (gobject_class, PROP_ALLOW_EMPTY, g_param_spec_boolean ("allow_empty", _("Allow empty"), _("Whether an empty value may be entered in this field"), TRUE, G_PARAM_READABLE | G_PARAM_WRITABLE)); g_object_class_install_property (gobject_class, PROP_VALUE_IN_LIST, g_param_spec_boolean ("value_in_list", _("Value in list"), _("Whether entered values must already be present in the list"), FALSE, G_PARAM_READABLE | G_PARAM_WRITABLE)); oclass->destroy = gtk_combo_destroy; widget_class->size_allocate = gtk_combo_size_allocate; widget_class->realize = gtk_combo_realize; widget_class->unrealize = gtk_combo_unrealize; } static void gtk_combo_destroy (GtkObject *object) { GtkCombo *combo = GTK_COMBO (object); if (combo->popwin) { gtk_widget_destroy (combo->popwin); g_object_unref (combo->popwin); combo->popwin = NULL; } GTK_OBJECT_CLASS (parent_class)->destroy (object); } static int gtk_combo_entry_key_press (GtkEntry * entry, GdkEventKey * event, GtkCombo * combo) { GList *li; guint state = event->state & gtk_accelerator_get_default_mod_mask (); /* completion */ if ((event->keyval == GDK_Tab || event->keyval == GDK_KP_Tab) && state == GDK_MOD1_MASK) { GtkEditable *editable = GTK_EDITABLE (entry); GCompletion * cmpl; gchar* prefix; gchar* nprefix = NULL; gint pos; if ( !GTK_LIST (combo->list)->children ) return FALSE; cmpl = g_completion_new ((GCompletionFunc)gtk_combo_func); g_completion_add_items (cmpl, GTK_LIST (combo->list)->children); pos = gtk_editable_get_position (editable); prefix = gtk_editable_get_chars (editable, 0, pos); g_completion_complete (cmpl, prefix, &nprefix); if (nprefix && strlen (nprefix) > strlen (prefix)) { gtk_editable_insert_text (editable, nprefix + pos, strlen (nprefix) - strlen (prefix), &pos); gtk_editable_set_position (editable, pos); } if (nprefix) g_free (nprefix); g_free (prefix); g_completion_free (cmpl); return TRUE; } if ((event->keyval == GDK_Down || event->keyval == GDK_KP_Down) && state == GDK_MOD1_MASK) { gtk_combo_activate (NULL, combo); return TRUE; } if (!combo->use_arrows || !GTK_LIST (combo->list)->children) return FALSE; gtk_combo_update_list (GTK_ENTRY (combo->entry), combo); li = g_list_find (GTK_LIST (combo->list)->children, gtk_combo_find (combo)); if (((event->keyval == GDK_Up || event->keyval == GDK_KP_Up) && state == 0) || ((event->keyval == 'p' || event->keyval == 'P') && state == GDK_MOD1_MASK)) { if (!li) li = g_list_last (GTK_LIST (combo->list)->children); else li = li->prev; if (li) { gtk_list_select_child (GTK_LIST (combo->list), GTK_WIDGET (li->data)); gtk_combo_update_entry (combo); } return TRUE; } if (((event->keyval == GDK_Down || event->keyval == GDK_KP_Down) && state == 0) || ((event->keyval == 'n' || event->keyval == 'N') && state == GDK_MOD1_MASK)) { if (!li) li = GTK_LIST (combo->list)->children; else if (li) li = li->next; if (li) { gtk_list_select_child (GTK_LIST (combo->list), GTK_WIDGET (li->data)); gtk_combo_update_entry (combo); } return TRUE; } return FALSE; } static int gtk_combo_window_key_press (GtkWidget *window, GdkEventKey *event, GtkCombo *combo) { guint state = event->state & gtk_accelerator_get_default_mod_mask (); if ((event->keyval == GDK_Return || event->keyval == GDK_KP_Enter) && state == 0) { gtk_combo_popdown_list (combo); gtk_combo_update_entry (combo); return TRUE; } else if ((event->keyval == GDK_Up || event->keyval == GDK_KP_Up) && state == GDK_MOD1_MASK) { gtk_combo_popdown_list (combo); return TRUE; } else if ((event->keyval == GDK_space || event->keyval == GDK_KP_Space) && state == 0) { gtk_combo_update_entry (combo); } return FALSE; } static GtkListItem * gtk_combo_find (GtkCombo * combo) { const gchar *text; GtkListItem *found = NULL; gchar *ltext; gchar *compare_text; GList *clist; text = gtk_entry_get_text (GTK_ENTRY (combo->entry)); if (combo->case_sensitive) compare_text = (gchar *)text; else compare_text = g_utf8_casefold (text, -1); for (clist = GTK_LIST (combo->list)->children; !found && clist; clist = clist->next) { ltext = gtk_combo_func (GTK_LIST_ITEM (clist->data)); if (!ltext) continue; if (!combo->case_sensitive) ltext = g_utf8_casefold (ltext, -1); if (strcmp (ltext, compare_text) == 0) found = clist->data; if (!combo->case_sensitive) g_free (ltext); } if (!combo->case_sensitive) g_free (compare_text); return found; } static gchar * gtk_combo_func (GtkListItem * li) { GtkWidget *label; gchar *ltext = NULL; ltext = g_object_get_data (G_OBJECT (li), gtk_combo_string_key); if (!ltext) { label = GTK_BIN (li)->child; if (!label || !GTK_IS_LABEL (label)) return NULL; ltext = (gchar *) gtk_label_get_text (GTK_LABEL (label)); } return ltext; } static gint gtk_combo_focus_idle (GtkCombo * combo) { if (combo) { GDK_THREADS_ENTER (); gtk_widget_grab_focus (combo->entry); GDK_THREADS_LEAVE (); } return FALSE; } static gint gtk_combo_entry_focus_out (GtkEntry * entry, GdkEventFocus * event, GtkCombo * combo) { if (combo->value_in_list && !gtk_combo_find (combo)) { GSource *focus_idle; /* gdk_beep(); *//* this can be annoying */ if (combo->ok_if_empty && !strcmp (gtk_entry_get_text (entry), "")) return FALSE; #ifdef TEST printf ("INVALID ENTRY: `%s'\n", gtk_entry_get_text (entry)); #endif gtk_grab_add (GTK_WIDGET (combo)); /* this is needed because if we call gtk_widget_grab_focus() it isn't guaranteed it's the *last* call before the main-loop, so the focus can be lost anyway... the signal_stop_emission doesn't seem to work either... */ focus_idle = g_idle_source_new (); g_source_set_closure (focus_idle, g_cclosure_new_object (G_CALLBACK (gtk_combo_focus_idle), G_OBJECT (combo))); g_source_attach (focus_idle, NULL); /*g_signal_stop_emission_by_name (entry, "focus_out_event"); */ return TRUE; } return FALSE; } static void gtk_combo_get_pos (GtkCombo * combo, gint * x, gint * y, gint * height, gint * width) { GtkBin *popwin; GtkWidget *widget; GtkScrolledWindow *popup; gint real_height; GtkRequisition list_requisition; gboolean show_hscroll = FALSE; gboolean show_vscroll = FALSE; gint avail_height; gint min_height; gint alloc_width; gint work_height; gint old_height; gint old_width; gint scrollbar_spacing; widget = GTK_WIDGET (combo); popup = GTK_SCROLLED_WINDOW (combo->popup); popwin = GTK_BIN (combo->popwin); scrollbar_spacing = _gtk_scrolled_window_get_scrollbar_spacing (popup); gdk_window_get_origin (combo->entry->window, x, y); real_height = MIN (combo->entry->requisition.height, combo->entry->allocation.height); *y += real_height; avail_height = gdk_screen_get_height (gtk_widget_get_screen (widget)) - *y; gtk_widget_size_request (combo->list, &list_requisition); min_height = MIN (list_requisition.height, popup->vscrollbar->requisition.height); if (!GTK_LIST (combo->list)->children) list_requisition.height += EMPTY_LIST_HEIGHT; alloc_width = (widget->allocation.width - 2 * popwin->child->style->xthickness - 2 * GTK_CONTAINER (popwin->child)->border_width - 2 * GTK_CONTAINER (combo->popup)->border_width - 2 * GTK_CONTAINER (GTK_BIN (popup)->child)->border_width - 2 * GTK_BIN (popup)->child->style->xthickness); work_height = (2 * popwin->child->style->ythickness + 2 * GTK_CONTAINER (popwin->child)->border_width + 2 * GTK_CONTAINER (combo->popup)->border_width + 2 * GTK_CONTAINER (GTK_BIN (popup)->child)->border_width + 2 * GTK_BIN (popup)->child->style->ythickness); do { old_width = alloc_width; old_height = work_height; if (!show_hscroll && alloc_width < list_requisition.width) { GtkRequisition requisition; gtk_widget_size_request (popup->hscrollbar, &requisition); work_height += (requisition.height + scrollbar_spacing); show_hscroll = TRUE; } if (!show_vscroll && work_height + list_requisition.height > avail_height) { GtkRequisition requisition; if (work_height + min_height > avail_height && *y - real_height > avail_height) { *y -= (work_height + list_requisition.height + real_height); break; } gtk_widget_size_request (popup->hscrollbar, &requisition); alloc_width -= (requisition.width + scrollbar_spacing); show_vscroll = TRUE; } } while (old_width != alloc_width || old_height != work_height); *width = widget->allocation.width; if (show_vscroll) *height = avail_height; else *height = work_height + list_requisition.height; if (*x < 0) *x = 0; } static void gtk_combo_popup_list (GtkCombo * combo) { GtkList *list; gint height, width, x, y; gint old_width, old_height; old_width = combo->popwin->allocation.width; old_height = combo->popwin->allocation.height; gtk_combo_get_pos (combo, &x, &y, &height, &width); /* workaround for gtk_scrolled_window_size_allocate bug */ if (old_width != width || old_height != height) { gtk_widget_hide (GTK_SCROLLED_WINDOW (combo->popup)->hscrollbar); gtk_widget_hide (GTK_SCROLLED_WINDOW (combo->popup)->vscrollbar); } gtk_combo_update_list (GTK_ENTRY (combo->entry), combo); /* We need to make sure some child of combo->popwin * is focused to disable GtkWindow's automatic * "focus-the-first-item" code. If there is no selected * child, we focus the list itself with some hackery. */ list = GTK_LIST (combo->list); if (list->selection) { gtk_widget_grab_focus (list->selection->data); } else { GTK_WIDGET_SET_FLAGS (list, GTK_CAN_FOCUS); gtk_widget_grab_focus (combo->list); GTK_LIST (combo->list)->last_focus_child = NULL; GTK_WIDGET_UNSET_FLAGS (list, GTK_CAN_FOCUS); } gtk_window_move (GTK_WINDOW (combo->popwin), x, y); gtk_widget_set_size_request (combo->popwin, width, height); gtk_widget_show (combo->popwin); gtk_widget_grab_focus (combo->popwin); } static void gtk_combo_popdown_list (GtkCombo *combo) { combo->current_button = 0; if (GTK_BUTTON (combo->button)->in_button) { GTK_BUTTON (combo->button)->in_button = FALSE; gtk_button_released (GTK_BUTTON (combo->button)); } if (GTK_WIDGET_HAS_GRAB (combo->popwin)) { gtk_grab_remove (combo->popwin); gdk_display_pointer_ungrab (gtk_widget_get_display (GTK_WIDGET (combo)), gtk_get_current_event_time ()); gdk_display_keyboard_ungrab (gtk_widget_get_display (GTK_WIDGET (combo)), gtk_get_current_event_time ()); } gtk_widget_hide (combo->popwin); } static gboolean popup_grab_on_window (GdkWindow *window, guint32 activate_time) { if ((gdk_pointer_grab (window, TRUE, GDK_BUTTON_PRESS_MASK | GDK_BUTTON_RELEASE_MASK | GDK_POINTER_MOTION_MASK, NULL, NULL, activate_time) == 0)) { if (gdk_keyboard_grab (window, TRUE, activate_time) == 0) return TRUE; else { gdk_display_pointer_ungrab (gdk_drawable_get_display (window), activate_time); return FALSE; } } return FALSE; } static void gtk_combo_activate (GtkWidget *widget, GtkCombo *combo) { if (!combo->button->window || !popup_grab_on_window (combo->button->window, gtk_get_current_event_time ())) return; gtk_combo_popup_list (combo); /* This must succeed since we already have the grab */ popup_grab_on_window (combo->popwin->window, gtk_get_current_event_time ()); if (!GTK_WIDGET_HAS_FOCUS (combo->entry)) gtk_widget_grab_focus (combo->entry); gtk_grab_add (combo->popwin); } static gboolean gtk_combo_popup_button_press (GtkWidget *button, GdkEventButton *event, GtkCombo *combo) { if (!GTK_WIDGET_HAS_FOCUS (combo->entry)) gtk_widget_grab_focus (combo->entry); if (event->button != 1) return FALSE; if (!popup_grab_on_window (combo->button->window, gtk_get_current_event_time ())) return FALSE; combo->current_button = event->button; gtk_combo_popup_list (combo); /* This must succeed since we already have the grab */ popup_grab_on_window (combo->popwin->window, gtk_get_current_event_time ()); gtk_button_pressed (GTK_BUTTON (button)); gtk_grab_add (combo->popwin); return TRUE; } static gboolean gtk_combo_popup_button_leave (GtkWidget *button, GdkEventCrossing *event, GtkCombo *combo) { /* The idea here is that we want to keep the button down if the * popup is popped up. */ return combo->current_button != 0; } static void gtk_combo_update_entry (GtkCombo * combo) { GtkList *list = GTK_LIST (combo->list); char *text; if (list->selection) { text = gtk_combo_func (GTK_LIST_ITEM (list->selection->data)); if (!text) text = ""; gtk_entry_set_text (GTK_ENTRY (combo->entry), text); } } static void gtk_combo_update_list (GtkEntry * entry, GtkCombo * combo) { GtkList *list = GTK_LIST (combo->list); GList *slist = list->selection; GtkListItem *li; gtk_grab_remove (GTK_WIDGET (combo)); g_signal_handler_block (entry, combo->entry_change_id); if (slist && slist->data) gtk_list_unselect_child (list, GTK_WIDGET (slist->data)); li = gtk_combo_find (combo); if (li) gtk_list_select_child (list, GTK_WIDGET (li)); g_signal_handler_unblock (entry, combo->entry_change_id); } static gint gtk_combo_button_press (GtkWidget * widget, GdkEvent * event, GtkCombo * combo) { GtkWidget *child; child = gtk_get_event_widget (event); /* We don't ask for button press events on the grab widget, so * if an event is reported directly to the grab widget, it must * be on a window outside the application (and thus we remove * the popup window). Otherwise, we check if the widget is a child * of the grab widget, and only remove the popup window if it * is not. */ if (child != widget) { while (child) { if (child == widget) return FALSE; child = child->parent; } } gtk_combo_popdown_list (combo); return TRUE; } static gboolean is_within (GtkWidget *widget, GtkWidget *ancestor) { return widget == ancestor || gtk_widget_is_ancestor (widget, ancestor); } static void gtk_combo_button_event_after (GtkWidget *widget, GdkEvent *event, GtkCombo *combo) { GtkWidget *child; if (event->type != GDK_BUTTON_RELEASE) return; child = gtk_get_event_widget ((GdkEvent*) event); if ((combo->current_button != 0) && (event->button.button == 1)) { /* This was the initial button press */ combo->current_button = 0; /* Check to see if we released inside the button */ if (child && is_within (child, combo->button)) { gtk_grab_add (combo->popwin); gdk_pointer_grab (combo->popwin->window, TRUE, GDK_BUTTON_PRESS_MASK | GDK_BUTTON_RELEASE_MASK | GDK_POINTER_MOTION_MASK, NULL, NULL, GDK_CURRENT_TIME); return; } } if (is_within (child, combo->list)) gtk_combo_update_entry (combo); gtk_combo_popdown_list (combo); } static void find_child_foreach (GtkWidget *widget, gpointer data) { GdkEventButton *event = data; if (!event->window) { if (event->x >= widget->allocation.x && event->x < widget->allocation.x + widget->allocation.width && event->y >= widget->allocation.y && event->y < widget->allocation.y + widget->allocation.height) event->window = g_object_ref (widget->window); } } static void find_child_window (GtkContainer *container, GdkEventButton *event) { gtk_container_foreach (container, find_child_foreach, event); } static gint gtk_combo_list_enter (GtkWidget *widget, GdkEventCrossing *event, GtkCombo *combo) { GtkWidget *event_widget; event_widget = gtk_get_event_widget ((GdkEvent*) event); if ((event_widget == combo->list) && (combo->current_button != 0) && (!GTK_WIDGET_HAS_GRAB (combo->list))) { GdkEvent *tmp_event = gdk_event_new (GDK_BUTTON_PRESS); gint x, y; GdkModifierType mask; gtk_grab_remove (combo->popwin); /* Transfer the grab over to the list by synthesizing * a button press event */ gdk_window_get_pointer (combo->list->window, &x, &y, &mask); tmp_event->button.send_event = TRUE; tmp_event->button.time = GDK_CURRENT_TIME; /* bad */ tmp_event->button.x = x; tmp_event->button.y = y; /* We leave all the XInput fields unfilled here, in the expectation * that GtkList doesn't care. */ tmp_event->button.button = combo->current_button; tmp_event->button.state = mask; find_child_window (GTK_CONTAINER (combo->list), &tmp_event->button); if (!tmp_event->button.window) { GtkWidget *child; if (GTK_LIST (combo->list)->children) child = GTK_LIST (combo->list)->children->data; else child = combo->list; tmp_event->button.window = g_object_ref (child->window); } gtk_widget_event (combo->list, tmp_event); gdk_event_free (tmp_event); } return FALSE; } static int gtk_combo_list_key_press (GtkWidget * widget, GdkEventKey * event, GtkCombo * combo) { guint state = event->state & gtk_accelerator_get_default_mod_mask (); if (event->keyval == GDK_Escape && state == 0) { if (GTK_WIDGET_HAS_GRAB (combo->list)) gtk_list_end_drag_selection (GTK_LIST (combo->list)); gtk_combo_popdown_list (combo); return TRUE; } return FALSE; } static void combo_event_box_realize (GtkWidget *widget) { GdkCursor *cursor = gdk_cursor_new_for_display (gtk_widget_get_display (widget), GDK_TOP_LEFT_ARROW); gdk_window_set_cursor (widget->window, cursor); gdk_cursor_unref (cursor); } static void gtk_combo_init (GtkCombo * combo) { GtkWidget *arrow; GtkWidget *frame; GtkWidget *event_box; combo->case_sensitive = FALSE; combo->value_in_list = FALSE; combo->ok_if_empty = TRUE; combo->use_arrows = TRUE; combo->use_arrows_always = FALSE; combo->entry = gtk_entry_new (); combo->button = gtk_button_new (); combo->current_button = 0; arrow = gtk_arrow_new (GTK_ARROW_DOWN, GTK_SHADOW_OUT); gtk_widget_show (arrow); gtk_container_add (GTK_CONTAINER (combo->button), arrow); gtk_box_pack_start (GTK_BOX (combo), combo->entry, TRUE, TRUE, 0); gtk_box_pack_end (GTK_BOX (combo), combo->button, FALSE, FALSE, 0); GTK_WIDGET_UNSET_FLAGS (combo->button, GTK_CAN_FOCUS); gtk_widget_show (combo->entry); gtk_widget_show (combo->button); combo->entry_change_id = g_signal_connect (combo->entry, "changed", G_CALLBACK (gtk_combo_update_list), combo); g_signal_connect (combo->entry, "key_press_event", G_CALLBACK (gtk_combo_entry_key_press), combo); g_signal_connect_after (combo->entry, "focus_out_event", G_CALLBACK (gtk_combo_entry_focus_out), combo); combo->activate_id = g_signal_connect (combo->entry, "activate", G_CALLBACK (gtk_combo_activate), combo); g_signal_connect (combo->button, "button_press_event", G_CALLBACK (gtk_combo_popup_button_press), combo); g_signal_connect (combo->button, "leave_notify_event", G_CALLBACK (gtk_combo_popup_button_leave), combo); combo->popwin = gtk_window_new (GTK_WINDOW_POPUP); g_object_ref (combo->popwin); gtk_window_set_resizable (GTK_WINDOW (combo->popwin), FALSE); g_signal_connect (combo->popwin, "key_press_event", G_CALLBACK (gtk_combo_window_key_press), combo); gtk_widget_set_events (combo->popwin, GDK_KEY_PRESS_MASK); event_box = gtk_event_box_new (); gtk_container_add (GTK_CONTAINER (combo->popwin), event_box); g_signal_connect (event_box, "realize", G_CALLBACK (combo_event_box_realize), NULL); gtk_widget_show (event_box); frame = gtk_frame_new (NULL); gtk_container_add (GTK_CONTAINER (event_box), frame); gtk_frame_set_shadow_type (GTK_FRAME (frame), GTK_SHADOW_OUT); gtk_widget_show (frame); combo->popup = gtk_scrolled_window_new (NULL, NULL); gtk_scrolled_window_set_policy (GTK_SCROLLED_WINDOW (combo->popup), GTK_POLICY_AUTOMATIC, GTK_POLICY_AUTOMATIC); GTK_WIDGET_UNSET_FLAGS (GTK_SCROLLED_WINDOW (combo->popup)->hscrollbar, GTK_CAN_FOCUS); GTK_WIDGET_UNSET_FLAGS (GTK_SCROLLED_WINDOW (combo->popup)->vscrollbar, GTK_CAN_FOCUS); gtk_container_add (GTK_CONTAINER (frame), combo->popup); gtk_widget_show (combo->popup); combo->list = gtk_list_new (); /* We'll use enter notify events to figure out when to transfer * the grab to the list */ gtk_widget_set_events (combo->list, GDK_ENTER_NOTIFY_MASK); gtk_list_set_selection_mode (GTK_LIST(combo->list), GTK_SELECTION_BROWSE); gtk_scrolled_window_add_with_viewport (GTK_SCROLLED_WINDOW (combo->popup), combo->list); gtk_container_set_focus_vadjustment (GTK_CONTAINER (combo->list), gtk_scrolled_window_get_vadjustment (GTK_SCROLLED_WINDOW (combo->popup))); gtk_container_set_focus_hadjustment (GTK_CONTAINER (combo->list), gtk_scrolled_window_get_hadjustment (GTK_SCROLLED_WINDOW (combo->popup))); gtk_widget_show (combo->list); g_signal_connect (combo->popwin, "key_press_event", G_CALLBACK (gtk_combo_list_key_press), combo); g_signal_connect (combo->popwin, "button_press_event", G_CALLBACK (gtk_combo_button_press), combo); g_signal_connect (combo->popwin, "event_after", G_CALLBACK (gtk_combo_button_event_after), combo); g_signal_connect (combo->list, "event_after", G_CALLBACK (gtk_combo_button_event_after), combo); g_signal_connect (combo->list, "enter_notify_event", G_CALLBACK (gtk_combo_list_enter), combo); } static void gtk_combo_realize (GtkWidget *widget) { GtkCombo *combo = GTK_COMBO (widget); gtk_window_set_screen (GTK_WINDOW (combo->popwin), gtk_widget_get_screen (widget)); GTK_WIDGET_CLASS( parent_class )->realize (widget); } static void gtk_combo_unrealize (GtkWidget *widget) { GtkCombo *combo = GTK_COMBO (widget); gtk_combo_popdown_list (combo); gtk_widget_unrealize (combo->popwin); GTK_WIDGET_CLASS (parent_class)->unrealize (widget); } GType gtk_combo_get_type (void) { static GType combo_type = 0; if (!combo_type) { static const GTypeInfo combo_info = { sizeof (GtkComboClass), NULL, /* base_init */ NULL, /* base_finalize */ (GClassInitFunc) gtk_combo_class_init, NULL, /* class_finalize */ NULL, /* class_data */ sizeof (GtkCombo), 0, /* n_preallocs */ (GInstanceInitFunc) gtk_combo_init, }; combo_type = g_type_register_static (GTK_TYPE_HBOX, "GtkCombo", &combo_info, 0); } return combo_type; } GtkWidget* gtk_combo_new (void) { return g_object_new (GTK_TYPE_COMBO, NULL); } void gtk_combo_set_value_in_list (GtkCombo * combo, gboolean val, gboolean ok_if_empty) { g_return_if_fail (GTK_IS_COMBO (combo)); val = val != FALSE; ok_if_empty = ok_if_empty != FALSE; g_object_freeze_notify (G_OBJECT (combo)); if (combo->value_in_list != val) { combo->value_in_list = val; g_object_notify (G_OBJECT (combo), "value_in_list"); } if (combo->ok_if_empty != ok_if_empty) { combo->ok_if_empty = ok_if_empty; g_object_notify (G_OBJECT (combo), "allow_empty"); } g_object_thaw_notify (G_OBJECT (combo)); } void gtk_combo_set_case_sensitive (GtkCombo * combo, gboolean val) { g_return_if_fail (GTK_IS_COMBO (combo)); val = val != FALSE; if (combo->case_sensitive != val) { combo->case_sensitive = val; g_object_notify (G_OBJECT (combo), "case_sensitive"); } } void gtk_combo_set_use_arrows (GtkCombo * combo, gboolean val) { g_return_if_fail (GTK_IS_COMBO (combo)); val = val != FALSE; if (combo->use_arrows != val) { combo->use_arrows = val; g_object_notify (G_OBJECT (combo), "enable_arrow_keys"); } } void gtk_combo_set_use_arrows_always (GtkCombo * combo, gboolean val) { g_return_if_fail (GTK_IS_COMBO (combo)); val = val != FALSE; if (combo->use_arrows_always != val) { g_object_freeze_notify (G_OBJECT (combo)); combo->use_arrows_always = val; g_object_notify (G_OBJECT (combo), "enable_arrows_always"); if (combo->use_arrows != TRUE) { combo->use_arrows = TRUE; g_object_notify (G_OBJECT (combo), "enable_arrow_keys"); } g_object_thaw_notify (G_OBJECT (combo)); } } void gtk_combo_set_popdown_strings (GtkCombo * combo, GList * strings) { GList *list; GtkWidget *li; g_return_if_fail (GTK_IS_COMBO (combo)); g_return_if_fail (strings != NULL); gtk_combo_popdown_list (combo); gtk_list_clear_items (GTK_LIST (combo->list), 0, -1); list = strings; while (list) { li = gtk_list_item_new_with_label ((gchar *) list->data); gtk_widget_show (li); gtk_container_add (GTK_CONTAINER (combo->list), li); list = list->next; } } void gtk_combo_set_item_string (GtkCombo * combo, GtkItem * item, const gchar * item_value) { g_return_if_fail (GTK_IS_COMBO (combo)); g_return_if_fail (item != NULL); g_object_set_data_full (G_OBJECT (item), gtk_combo_string_key, g_strdup (item_value), g_free); } static void gtk_combo_size_allocate (GtkWidget *widget, GtkAllocation *allocation) { GtkCombo *combo; g_return_if_fail (GTK_IS_COMBO (widget)); g_return_if_fail (allocation != NULL); GTK_WIDGET_CLASS (parent_class)->size_allocate (widget, allocation); combo = GTK_COMBO (widget); if (combo->entry->allocation.height > combo->entry->requisition.height) { GtkAllocation button_allocation; button_allocation = combo->button->allocation; button_allocation.height = combo->entry->requisition.height; button_allocation.y = combo->entry->allocation.y + (combo->entry->allocation.height - combo->entry->requisition.height) / 2; gtk_widget_size_allocate (combo->button, &button_allocation); } } void gtk_combo_disable_activate (GtkCombo* combo) { g_return_if_fail (GTK_IS_COMBO (combo)); if ( combo->activate_id ) { g_signal_handler_disconnect (combo->entry, combo->activate_id); combo->activate_id = 0; } } static void gtk_combo_set_property (GObject *object, guint prop_id, const GValue *value, GParamSpec *pspec) { GtkCombo *combo = GTK_COMBO (object); switch (prop_id) { case PROP_ENABLE_ARROW_KEYS: gtk_combo_set_use_arrows (combo, g_value_get_boolean (value)); break; case PROP_ENABLE_ARROWS_ALWAYS: gtk_combo_set_use_arrows_always (combo, g_value_get_boolean (value)); break; case PROP_CASE_SENSITIVE: gtk_combo_set_case_sensitive (combo, g_value_get_boolean (value)); break; case PROP_ALLOW_EMPTY: combo->ok_if_empty = g_value_get_boolean (value); break; case PROP_VALUE_IN_LIST: combo->value_in_list = g_value_get_boolean (value); break; default: G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); break; } } static void gtk_combo_get_property (GObject *object, guint prop_id, GValue *value, GParamSpec *pspec) { GtkCombo *combo = GTK_COMBO (object); switch (prop_id) { case PROP_ENABLE_ARROW_KEYS: g_value_set_boolean (value, combo->use_arrows); break; case PROP_ENABLE_ARROWS_ALWAYS: g_value_set_boolean (value, combo->use_arrows_always); break; case PROP_CASE_SENSITIVE: g_value_set_boolean (value, combo->case_sensitive); break; case PROP_ALLOW_EMPTY: g_value_set_boolean (value, combo->ok_if_empty); break; case PROP_VALUE_IN_LIST: g_value_set_boolean (value, combo->value_in_list); break; default: G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); break; } }