/* GTK - The GIMP Toolkit * Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Library 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 * Library General Public License for more details. * * You should have received a copy of the GNU Library 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. */ #include #include "gtkcontainer.h" #include "gtkprivate.h" #include "gtksignal.h" #include "gtkmain.h" #include enum { ADD, REMOVE, CHECK_RESIZE, FOCUS, SET_FOCUS_CHILD, LAST_SIGNAL }; enum { ARG_0, ARG_BORDER_WIDTH, ARG_RESIZE_MODE, ARG_CHILD }; typedef struct _GtkChildArgInfo GtkChildArgInfo; struct _GtkChildArgInfo { gchar *name; GtkType type; GtkType class_type; guint arg_flags; guint arg_id; guint seq_id; }; static void gtk_container_base_class_init (GtkContainerClass *klass); static void gtk_container_class_init (GtkContainerClass *klass); static void gtk_container_init (GtkContainer *container); static void gtk_container_destroy (GtkObject *object); static void gtk_container_get_arg (GtkObject *object, GtkArg *arg, guint arg_id); static void gtk_container_set_arg (GtkObject *object, GtkArg *arg, guint arg_id); static void gtk_container_add_unimplemented (GtkContainer *container, GtkWidget *widget); static void gtk_container_remove_unimplemented (GtkContainer *container, GtkWidget *widget); static void gtk_container_real_check_resize (GtkContainer *container); static gint gtk_container_real_focus (GtkContainer *container, GtkDirectionType direction); static void gtk_container_real_set_focus_child (GtkContainer *container, GtkWidget *widget); static gint gtk_container_focus_tab (GtkContainer *container, GList *children, GtkDirectionType direction); static gint gtk_container_focus_up_down (GtkContainer *container, GList *children, GtkDirectionType direction); static gint gtk_container_focus_left_right (GtkContainer *container, GList *children, GtkDirectionType direction); static gint gtk_container_focus_move (GtkContainer *container, GList *children, GtkDirectionType direction); static void gtk_container_children_callback (GtkWidget *widget, gpointer client_data); static void gtk_container_show_all (GtkWidget *widget); static void gtk_container_hide_all (GtkWidget *widget); static guint container_signals[LAST_SIGNAL] = { 0 }; static GHashTable *container_child_arg_info_ht = NULL; static GtkWidgetClass *parent_class = NULL; static const gchar *vadjustment_key = "gtk-vadjustment"; static guint vadjustment_key_id = 0; static const gchar *hadjustment_key = "gtk-hadjustment"; static guint hadjustment_key_id = 0; static GSList *container_resize_queue = NULL; GtkType gtk_container_get_type (void) { static GtkType container_type = 0; if (!container_type) { GtkTypeInfo container_info = { "GtkContainer", sizeof (GtkContainer), sizeof (GtkContainerClass), (GtkClassInitFunc) gtk_container_class_init, (GtkObjectInitFunc) gtk_container_init, /* reserved_1 */ NULL, /* reserved_2 */ NULL, (GtkClassInitFunc) gtk_container_base_class_init, }; container_type = gtk_type_unique (gtk_widget_get_type (), &container_info); } return container_type; } static void gtk_container_base_class_init (GtkContainerClass *class) { /* reset instance specifc class fields that don't get inherited */ class->n_child_args = 0; class->set_child_arg = NULL; class->get_child_arg = NULL; } static void gtk_container_class_init (GtkContainerClass *class) { GtkObjectClass *object_class; GtkWidgetClass *widget_class; object_class = (GtkObjectClass*) class; widget_class = (GtkWidgetClass*) class; parent_class = gtk_type_class (gtk_widget_get_type ()); container_child_arg_info_ht = g_hash_table_new (gtk_arg_info_hash, gtk_arg_info_equal); vadjustment_key_id = g_quark_from_static_string (vadjustment_key); hadjustment_key_id = g_quark_from_static_string (hadjustment_key); gtk_object_add_arg_type ("GtkContainer::border_width", GTK_TYPE_ULONG, GTK_ARG_READWRITE, ARG_BORDER_WIDTH); gtk_object_add_arg_type ("GtkContainer::resize_mode", GTK_TYPE_RESIZE_MODE, GTK_ARG_READWRITE, ARG_RESIZE_MODE); gtk_object_add_arg_type ("GtkContainer::child", GTK_TYPE_WIDGET, GTK_ARG_WRITABLE, ARG_CHILD); container_signals[ADD] = gtk_signal_new ("add", GTK_RUN_FIRST, object_class->type, GTK_SIGNAL_OFFSET (GtkContainerClass, add), gtk_marshal_NONE__POINTER, GTK_TYPE_NONE, 1, GTK_TYPE_WIDGET); container_signals[REMOVE] = gtk_signal_new ("remove", GTK_RUN_FIRST, object_class->type, GTK_SIGNAL_OFFSET (GtkContainerClass, remove), gtk_marshal_NONE__POINTER, GTK_TYPE_NONE, 1, GTK_TYPE_WIDGET); container_signals[CHECK_RESIZE] = gtk_signal_new ("check_resize", GTK_RUN_LAST, object_class->type, GTK_SIGNAL_OFFSET (GtkContainerClass, check_resize), gtk_marshal_NONE__NONE, GTK_TYPE_NONE, 0); container_signals[FOCUS] = gtk_signal_new ("focus", GTK_RUN_LAST, object_class->type, GTK_SIGNAL_OFFSET (GtkContainerClass, focus), gtk_marshal_ENUM__ENUM, GTK_TYPE_DIRECTION_TYPE, 1, GTK_TYPE_DIRECTION_TYPE); container_signals[SET_FOCUS_CHILD] = gtk_signal_new ("set-focus-child", GTK_RUN_FIRST, object_class->type, GTK_SIGNAL_OFFSET (GtkContainerClass, set_focus_child), gtk_marshal_NONE__POINTER, GTK_TYPE_NONE, 1, GTK_TYPE_WIDGET); gtk_object_class_add_signals (object_class, container_signals, LAST_SIGNAL); object_class->get_arg = gtk_container_get_arg; object_class->set_arg = gtk_container_set_arg; object_class->destroy = gtk_container_destroy; widget_class->show_all = gtk_container_show_all; widget_class->hide_all = gtk_container_hide_all; class->add = gtk_container_add_unimplemented; class->remove = gtk_container_remove_unimplemented; class->check_resize = gtk_container_real_check_resize; class->forall = NULL; class->focus = gtk_container_real_focus; class->set_focus_child = gtk_container_real_set_focus_child; class->child_type = NULL; } GtkType gtk_container_child_type (GtkContainer *container) { GtkType slot; GtkContainerClass *class; g_return_val_if_fail (container != NULL, 0); g_return_val_if_fail (GTK_IS_CONTAINER (container), 0); class = GTK_CONTAINER_CLASS (GTK_OBJECT (container)->klass); if (class->child_type) slot = class->child_type (container); else slot = GTK_TYPE_NONE; return slot; } /**************************************************** * GtkContainer child argument mechanism * ****************************************************/ void gtk_container_add_with_args (GtkContainer *container, GtkWidget *widget, const gchar *first_arg_name, ...) { g_return_if_fail (container != NULL); g_return_if_fail (GTK_IS_CONTAINER (container)); g_return_if_fail (widget != NULL); g_return_if_fail (GTK_IS_WIDGET (widget)); g_return_if_fail (widget->parent == NULL); gtk_widget_ref (GTK_WIDGET (container)); gtk_widget_ref (widget); gtk_signal_emit (GTK_OBJECT (container), container_signals[ADD], widget); if (widget->parent) { va_list var_args; GSList *arg_list = NULL; GSList *info_list = NULL; gchar *error; va_start (var_args, first_arg_name); error = gtk_container_child_args_collect (GTK_OBJECT_TYPE (container), &arg_list, &info_list, first_arg_name, var_args); va_end (var_args); if (error) { g_warning ("gtk_container_add_with_args(): %s", error); g_free (error); } else { GSList *slist_arg; GSList *slist_info; slist_arg = arg_list; slist_info = info_list; while (slist_arg) { gtk_container_arg_set (container, widget, slist_arg->data, slist_info->data); slist_arg = slist_arg->next; slist_info = slist_info->next; } gtk_args_collect_cleanup (arg_list, info_list); } } gtk_widget_unref (widget); gtk_widget_unref (GTK_WIDGET (container)); } void gtk_container_addv (GtkContainer *container, GtkWidget *widget, guint n_args, GtkArg *args) { g_return_if_fail (container != NULL); g_return_if_fail (GTK_IS_CONTAINER (container)); g_return_if_fail (widget != NULL); g_return_if_fail (GTK_IS_WIDGET (widget)); g_return_if_fail (widget->parent == NULL); gtk_widget_ref (GTK_WIDGET (container)); gtk_widget_ref (widget); gtk_signal_emit (GTK_OBJECT (container), container_signals[ADD], widget); if (widget->parent) { GtkArg *max_args; for (max_args = args + n_args; args < max_args; args++) gtk_container_arg_set (container, widget, args, NULL); } gtk_widget_unref (widget); gtk_widget_unref (GTK_WIDGET (container)); } void gtk_container_child_setv (GtkContainer *container, GtkWidget *child, guint n_args, GtkArg *args) { GtkArg *max_args; g_return_if_fail (container != NULL); g_return_if_fail (GTK_IS_CONTAINER (container)); g_return_if_fail (child != NULL); g_return_if_fail (GTK_IS_WIDGET (child)); g_return_if_fail (child->parent != NULL); if (n_args) g_return_if_fail (args != NULL); for (max_args = args + n_args; args < max_args; args++) gtk_container_arg_set (container, child, args, NULL); } void gtk_container_child_getv (GtkContainer *container, GtkWidget *child, guint n_args, GtkArg *args) { GtkArg *max_args; g_return_if_fail (container != NULL); g_return_if_fail (GTK_IS_CONTAINER (container)); g_return_if_fail (child != NULL); g_return_if_fail (GTK_IS_WIDGET (child)); g_return_if_fail (child->parent != NULL); if (n_args) g_return_if_fail (args != NULL); for (max_args = args + n_args; args < max_args; args++) gtk_container_arg_get (container, child, args, NULL); } void gtk_container_child_set (GtkContainer *container, GtkWidget *child, const gchar *first_arg_name, ...) { va_list var_args; GSList *arg_list = NULL; GSList *info_list = NULL; gchar *error; g_return_if_fail (container != NULL); g_return_if_fail (GTK_IS_CONTAINER (container)); g_return_if_fail (child != NULL); g_return_if_fail (GTK_IS_WIDGET (child)); g_return_if_fail (child->parent != NULL); va_start (var_args, first_arg_name); error = gtk_container_child_args_collect (GTK_OBJECT_TYPE (container), &arg_list, &info_list, first_arg_name, var_args); va_end (var_args); if (error) { g_warning ("gtk_container_child_set(): %s", error); g_free (error); } else { GSList *slist_arg; GSList *slist_info; slist_arg = arg_list; slist_info = info_list; while (slist_arg) { gtk_container_arg_set (container, child, slist_arg->data, slist_info->data); slist_arg = slist_arg->next; slist_info = slist_info->next; } gtk_args_collect_cleanup (arg_list, info_list); } } void gtk_container_arg_set (GtkContainer *container, GtkWidget *child, GtkArg *arg, GtkArgInfo *info) { GtkContainerClass *class; g_return_if_fail (container != NULL); g_return_if_fail (GTK_IS_CONTAINER (container)); g_return_if_fail (child != NULL); g_return_if_fail (GTK_IS_WIDGET (child)); g_return_if_fail (arg != NULL); if (!info) { gchar *error; error = gtk_arg_get_info (GTK_OBJECT_TYPE (container), container_child_arg_info_ht, arg->name, &info); if (error) { g_warning ("gtk_container_arg_set(): %s", error); g_free (error); return; } } g_return_if_fail (info->arg_flags & GTK_ARG_CHILD_ARG); if (! (info->arg_flags & GTK_ARG_WRITABLE)) { g_warning ("gtk_container_arg_set(): argument \"%s\" is not writable", info->full_name); return; } if (info->type != arg->type) { g_warning ("gtk_container_arg_set(): argument \"%s\" has invalid type `%s'", info->full_name, gtk_type_name (arg->type)); return; } class = gtk_type_class (info->class_type); g_assert (class->set_child_arg != NULL); class->set_child_arg (container, child, arg, info->arg_id); } void gtk_container_arg_get (GtkContainer *container, GtkWidget *child, GtkArg *arg, GtkArgInfo *info) { GtkContainerClass *class; g_return_if_fail (container != NULL); g_return_if_fail (GTK_IS_CONTAINER (container)); g_return_if_fail (child != NULL); g_return_if_fail (GTK_IS_WIDGET (child)); g_return_if_fail (arg != NULL); if (!info) { gchar *error; error = gtk_arg_get_info (GTK_OBJECT_TYPE (container), container_child_arg_info_ht, arg->name, &info); if (error) { g_warning ("gtk_container_arg_get(): %s", error); g_free (error); arg->type = GTK_TYPE_INVALID; return; } } g_return_if_fail (info->arg_flags & GTK_ARG_CHILD_ARG); if (! (info->arg_flags & GTK_ARG_READABLE)) { g_warning ("gtk_container_arg_get(): argument \"%s\" is not readable", info->full_name); arg->type = GTK_TYPE_INVALID; return; } class = gtk_type_class (info->class_type); g_assert (class->get_child_arg != NULL); arg->type = info->type; class->get_child_arg (container, child, arg, info->arg_id); } void gtk_container_add_child_arg_type (const gchar *arg_name, GtkType arg_type, guint arg_flags, guint arg_id) { g_return_if_fail (arg_name != NULL); g_return_if_fail (arg_type > GTK_TYPE_NONE); g_return_if_fail (arg_id > 0); g_return_if_fail ((arg_flags & GTK_ARG_READWRITE) == GTK_ARG_READWRITE); /* g_return_if_fail ((arg_flags & GTK_ARG_CHILD_ARG) != 0); */ arg_flags |= GTK_ARG_CHILD_ARG; arg_flags &= GTK_ARG_MASK; gtk_arg_type_new_static (GTK_TYPE_CONTAINER, arg_name, GTK_STRUCT_OFFSET (GtkContainerClass, n_child_args), container_child_arg_info_ht, arg_type, arg_flags, arg_id); } gchar* gtk_container_child_args_collect (GtkType object_type, GSList **arg_list_p, GSList **info_list_p, const gchar *first_arg_name, va_list var_args) { return gtk_args_collect (object_type, container_child_arg_info_ht, arg_list_p, info_list_p, first_arg_name, var_args); } gchar* gtk_container_child_arg_get_info (GtkType object_type, const gchar *arg_name, GtkArgInfo **info_p) { return gtk_arg_get_info (object_type, container_child_arg_info_ht, arg_name, info_p); } GtkArg* gtk_container_query_child_args (GtkType class_type, guint32 **arg_flags, guint *n_args) { g_return_val_if_fail (n_args != NULL, NULL); *n_args = 0; g_return_val_if_fail (gtk_type_is_a (class_type, GTK_TYPE_CONTAINER), NULL); return gtk_args_query (class_type, container_child_arg_info_ht, arg_flags, n_args); } static void gtk_container_add_unimplemented (GtkContainer *container, GtkWidget *widget) { g_warning ("GtkContainerClass::add not implemented for `%s'", gtk_type_name (GTK_OBJECT_TYPE (container))); } static void gtk_container_remove_unimplemented (GtkContainer *container, GtkWidget *widget) { g_warning ("GtkContainerClass::remove not implemented for `%s'", gtk_type_name (GTK_OBJECT_TYPE (container))); } static void gtk_container_init (GtkContainer *container) { container->focus_child = NULL; container->border_width = 0; container->need_resize = FALSE; container->resize_mode = GTK_RESIZE_PARENT; container->resize_widgets = NULL; } static void gtk_container_destroy (GtkObject *object) { GtkContainer *container; g_return_if_fail (object != NULL); g_return_if_fail (GTK_IS_CONTAINER (object)); container = GTK_CONTAINER (object); if (GTK_CONTAINER_RESIZE_PENDING (container)) { container_resize_queue = g_slist_remove (container_resize_queue, container); GTK_PRIVATE_UNSET_FLAG (container, GTK_RESIZE_PENDING); } gtk_container_clear_resize_widgets (container); gtk_container_foreach (container, (GtkCallback) gtk_widget_destroy, NULL); if (GTK_OBJECT_CLASS (parent_class)->destroy) (* GTK_OBJECT_CLASS (parent_class)->destroy) (object); } static void gtk_container_set_arg (GtkObject *object, GtkArg *arg, guint arg_id) { GtkContainer *container; container = GTK_CONTAINER (object); switch (arg_id) { case ARG_BORDER_WIDTH: gtk_container_border_width (container, GTK_VALUE_ULONG (*arg)); break; case ARG_RESIZE_MODE: gtk_container_set_resize_mode (container, GTK_VALUE_ENUM (*arg)); break; case ARG_CHILD: gtk_container_add (container, GTK_WIDGET (GTK_VALUE_OBJECT (*arg))); break; default: break; } } static void gtk_container_get_arg (GtkObject *object, GtkArg *arg, guint arg_id) { GtkContainer *container; container = GTK_CONTAINER (object); switch (arg_id) { case ARG_BORDER_WIDTH: GTK_VALUE_ULONG (*arg) = container->border_width; break; case ARG_RESIZE_MODE: GTK_VALUE_ENUM (*arg) = container->resize_mode; break; default: arg->type = GTK_TYPE_INVALID; break; } } void gtk_container_border_width (GtkContainer *container, guint border_width) { g_return_if_fail (container != NULL); g_return_if_fail (GTK_IS_CONTAINER (container)); if (container->border_width != border_width) { container->border_width = border_width; if (GTK_WIDGET_REALIZED (container)) gtk_widget_queue_resize (GTK_WIDGET (container)); } } void gtk_container_add (GtkContainer *container, GtkWidget *widget) { g_return_if_fail (container != NULL); g_return_if_fail (GTK_IS_CONTAINER (container)); g_return_if_fail (widget != NULL); g_return_if_fail (GTK_IS_WIDGET (widget)); g_return_if_fail (widget->parent == NULL); gtk_signal_emit (GTK_OBJECT (container), container_signals[ADD], widget); } void gtk_container_remove (GtkContainer *container, GtkWidget *widget) { g_return_if_fail (container != NULL); g_return_if_fail (GTK_IS_CONTAINER (container)); g_return_if_fail (widget != NULL); g_return_if_fail (GTK_IS_WIDGET (widget)); g_return_if_fail (widget->parent == GTK_WIDGET (container)); gtk_signal_emit (GTK_OBJECT (container), container_signals[REMOVE], widget); } void gtk_container_disable_resize (GtkContainer *container) { g_warning ("gtk_container_disable_resize does nothing!"); } void gtk_container_enable_resize (GtkContainer *container) { g_warning ("gtk_container_enable_resize does nothing!"); } void gtk_container_block_resize (GtkContainer *container) { g_return_if_fail (container != NULL); g_return_if_fail (GTK_IS_CONTAINER (container)); } void gtk_container_unblock_resize (GtkContainer *container) { g_return_if_fail (container != NULL); g_return_if_fail (GTK_IS_CONTAINER (container)); } void gtk_container_clear_resize_widgets (GtkContainer *container) { GSList *node; g_return_if_fail (container != NULL); g_return_if_fail (GTK_IS_CONTAINER (container)); node = container->resize_widgets; if (node) gtk_signal_disconnect_by_func (GTK_OBJECT (container), GTK_SIGNAL_FUNC (gtk_container_clear_resize_widgets), NULL); while (node) { GtkWidget *widget = node->data; GTK_PRIVATE_UNSET_FLAG (widget, GTK_RESIZE_NEEDED); node = node->next; } g_slist_free (container->resize_widgets); container->resize_widgets = NULL; } void gtk_container_set_resize_mode (GtkContainer *container, GtkResizeMode resize_mode) { g_return_if_fail (container != NULL); g_return_if_fail (GTK_IS_CONTAINER (container)); g_return_if_fail (resize_mode <= GTK_RESIZE_IMMEDIATE); if (GTK_WIDGET_TOPLEVEL (container) && resize_mode == GTK_RESIZE_PARENT) resize_mode = GTK_RESIZE_QUEUE; if (container->resize_mode != resize_mode) { container->resize_mode = resize_mode; if (resize_mode == GTK_RESIZE_IMMEDIATE) gtk_container_check_resize (container); else { gtk_container_clear_resize_widgets (container); gtk_widget_queue_resize (GTK_WIDGET (container)); } } } gint gtk_container_need_resize (GtkContainer *container) { gtk_container_check_resize (container); return FALSE; } static GtkContainer* gtk_container_get_resize_container (GtkContainer *container) { GtkWidget *widget; widget = GTK_WIDGET (container); while (widget->parent) { widget = widget->parent; if (GTK_IS_RESIZE_CONTAINER (widget) && !GTK_WIDGET_RESIZE_NEEDED (widget)) break; } return GTK_IS_RESIZE_CONTAINER (widget) ? (GtkContainer*) widget : NULL; } static gboolean gtk_container_idle_sizer (gpointer data) { /* we may be invoked with a container_resize_queue of NULL, because * queue_resize could have been adding an extra idle function while * the queue still got processed. we better just ignore such case * than trying to explicitely work around them with some extra flags, * sine it doesn't cause any actual harm. */ while (container_resize_queue) { GSList *slist; GtkWidget *widget; slist = container_resize_queue; container_resize_queue = slist->next; widget = slist->data; g_slist_free_1 (slist); GTK_PRIVATE_UNSET_FLAG (widget, GTK_RESIZE_PENDING); gtk_container_check_resize (GTK_CONTAINER (widget)); } return FALSE; } void gtk_container_queue_resize (GtkContainer *container) { GtkContainer *resize_container; g_return_if_fail (container != NULL); g_return_if_fail (GTK_IS_CONTAINER (container)); if (GTK_OBJECT_DESTROYED (container) || GTK_WIDGET_RESIZE_NEEDED (container)) return; if (GTK_IS_RESIZE_CONTAINER (container)) gtk_container_clear_resize_widgets (container); resize_container = gtk_container_get_resize_container (container); if (resize_container) { if (GTK_WIDGET_VISIBLE (resize_container)) { switch (resize_container->resize_mode) { case GTK_RESIZE_QUEUE: if (!GTK_CONTAINER_RESIZE_PENDING (resize_container)) { GTK_PRIVATE_SET_FLAG (resize_container, GTK_RESIZE_PENDING); if (container_resize_queue == NULL) gtk_idle_add_priority (GTK_PRIORITY_INTERNAL - 1, gtk_container_idle_sizer, NULL); container_resize_queue = g_slist_prepend (container_resize_queue, resize_container); } GTK_PRIVATE_SET_FLAG (container, GTK_RESIZE_NEEDED); if (!resize_container->resize_widgets) gtk_signal_connect (GTK_OBJECT (resize_container), "size_allocate", GTK_SIGNAL_FUNC (gtk_container_clear_resize_widgets), NULL); resize_container->resize_widgets = g_slist_prepend (resize_container->resize_widgets, container); break; case GTK_RESIZE_IMMEDIATE: GTK_PRIVATE_SET_FLAG (container, GTK_RESIZE_NEEDED); if (!resize_container->resize_widgets) gtk_signal_connect (GTK_OBJECT (resize_container), "size_allocate", GTK_SIGNAL_FUNC (gtk_container_clear_resize_widgets), NULL); resize_container->resize_widgets = g_slist_prepend (resize_container->resize_widgets, container); gtk_container_check_resize (resize_container); break; case GTK_RESIZE_PARENT: /* Ignore */ break; } } else { /* We need to let hidden toplevels know that something * changed while they where hidden. For other resize containers, * they will get resized when they are shown. */ if (GTK_WIDGET_TOPLEVEL (resize_container)) gtk_container_check_resize (resize_container); } } } void gtk_container_check_resize (GtkContainer *container) { g_return_if_fail (container != NULL); g_return_if_fail (GTK_IS_CONTAINER (container)); gtk_signal_emit (GTK_OBJECT (container), container_signals[CHECK_RESIZE]); } static void gtk_container_real_check_resize (GtkContainer *container) { GtkWidget *widget; g_return_if_fail (container != NULL); g_return_if_fail (GTK_IS_CONTAINER (container)); widget = GTK_WIDGET (container); gtk_widget_size_request (widget, &widget->requisition); if (widget->requisition.width > widget->allocation.width || widget->requisition.height > widget->allocation.height) { if (GTK_IS_RESIZE_CONTAINER (container)) { gtk_widget_size_allocate (GTK_WIDGET (container), >K_WIDGET (container)->allocation); gtk_widget_queue_draw (GTK_WIDGET (container)); } else gtk_widget_queue_resize (widget); } else { gtk_container_resize_children (container); } } /* The container hasn't changed size but one of its children * queued a resize request. Which means that the allocation * is not sufficient for the requisition of some child. * We've already performed a size request at this point, * so we simply need to run through the list of resize * widgets and reallocate their sizes appropriately. We * make the optimization of not performing reallocation * for a widget who also has a parent in the resize widgets * list. GTK_RESIZE_NEEDED is used for flagging those * parents inside this function. */ void gtk_container_resize_children (GtkContainer *container) { GtkWidget *widget; GtkWidget *resize_container; GSList *resize_widgets; GSList *resize_containers; GSList *node; /* resizing invariants: * toplevels have *always* resize_mode != GTK_RESIZE_PARENT set. * containers with resize_mode==GTK_RESIZE_PARENT have to have resize_widgets * set to NULL. * containers that are flagged RESIZE_NEEDED must have resize_widgets set to * NULL, or are toplevels (thus have ->parent set to NULL). * widgets that are in some container->resize_widgets list must be flagged with * RESIZE_NEEDED. * widgets that have RESIZE_NEEDED set must be referenced in some * GTK_IS_RESIZE_CONTAINER (container)->resize_widgets list. * containers that have an idle sizer pending must be flagged with * RESIZE_PENDING. */ g_return_if_fail (container != NULL); g_return_if_fail (GTK_IS_CONTAINER (container)); /* we first check out if we actually need to perform a resize, * which is not the case if we got another container queued for * a resize in our anchestry. also we can skip the whole * resize_widgets checks if we are a toplevel and NEED_RESIZE. * this code implies that our allocation is sufficient for our * requisition, since otherwise we would NEED_RESIZE. */ resize_container = GTK_WIDGET (container); while (resize_container) { if (GTK_WIDGET_RESIZE_NEEDED (resize_container)) break; resize_container = resize_container->parent; } if (resize_container) { /* queue_resize and size_allocate both clear our * resize_widgets list. */ if (resize_container->parent) gtk_container_queue_resize (container); else { gtk_widget_size_allocate (GTK_WIDGET (container), >K_WIDGET (container)->allocation); gtk_widget_queue_draw (GTK_WIDGET (container)); } return; } resize_container = GTK_WIDGET (container); /* we now walk the anchestry for all resize widgets as long * as they are our children and as long as their allocation * is insufficient, since we don't need to reallocate below that. */ resize_widgets = container->resize_widgets; if (resize_widgets) gtk_signal_disconnect_by_func (GTK_OBJECT (container), GTK_SIGNAL_FUNC (gtk_container_clear_resize_widgets), NULL); container->resize_widgets = NULL; for (node = resize_widgets; node; node = node->next) { widget = node->data; GTK_PRIVATE_UNSET_FLAG (widget, GTK_RESIZE_NEEDED); while (widget->parent != resize_container && ((widget->allocation.width < widget->requisition.width) || (widget->allocation.height < widget->requisition.height))) widget = widget->parent; GTK_PRIVATE_SET_FLAG (widget, GTK_RESIZE_NEEDED); node->data = widget; } /* for the newly setup resize_widgets list, we now walk each widget's * anchestry to sort those widgets out that have RESIZE_NEEDED parents. * we can safely stop the walk if we are the parent, since we checked * our own anchestry already. */ resize_containers = NULL; for (node = resize_widgets; node; node = node->next) { GtkWidget *parent; widget = node->data; if (!GTK_WIDGET_RESIZE_NEEDED (widget)) continue; parent = widget->parent; while (parent != resize_container) { if (GTK_WIDGET_RESIZE_NEEDED (parent)) { GTK_PRIVATE_UNSET_FLAG (widget, GTK_RESIZE_NEEDED); widget = parent; } parent = parent->parent; } if (!g_slist_find (resize_containers, widget)) { resize_containers = g_slist_prepend (resize_containers, widget); gtk_widget_ref (widget); } } g_slist_free (resize_widgets); for (node = resize_containers; node; node = node->next) { widget = node->data; GTK_PRIVATE_UNSET_FLAG (widget, GTK_RESIZE_NEEDED); gtk_widget_size_allocate (widget, &widget->allocation); gtk_widget_queue_draw (widget); gtk_widget_unref (widget); } g_slist_free (resize_containers); } void gtk_container_forall (GtkContainer *container, GtkCallback callback, gpointer callback_data) { GtkContainerClass *class; g_return_if_fail (container != NULL); g_return_if_fail (GTK_IS_CONTAINER (container)); g_return_if_fail (callback != NULL); class = GTK_CONTAINER_CLASS (GTK_OBJECT (container)->klass); if (class->forall) class->forall (container, TRUE, callback, callback_data); } void gtk_container_foreach (GtkContainer *container, GtkCallback callback, gpointer callback_data) { GtkContainerClass *class; g_return_if_fail (container != NULL); g_return_if_fail (GTK_IS_CONTAINER (container)); g_return_if_fail (callback != NULL); class = GTK_CONTAINER_CLASS (GTK_OBJECT (container)->klass); if (class->forall) class->forall (container, FALSE, callback, callback_data); } typedef struct _GtkForeachData GtkForeachData; struct _GtkForeachData { GtkObject *container; GtkCallbackMarshal callback; gpointer callback_data; }; static void gtk_container_foreach_unmarshal (GtkWidget *child, gpointer data) { GtkForeachData *fdata = (GtkForeachData*) data; GtkArg args[2]; /* first argument */ args[0].name = NULL; args[0].type = GTK_OBJECT(child)->klass->type; GTK_VALUE_OBJECT(args[0]) = GTK_OBJECT (child); /* location for return value */ args[1].name = NULL; args[1].type = GTK_TYPE_NONE; fdata->callback (fdata->container, fdata->callback_data, 1, args); } void gtk_container_foreach_interp (GtkContainer *container, GtkCallbackMarshal marshal, gpointer callback_data, GtkDestroyNotify notify) { gtk_container_foreach_full (container, NULL, marshal, callback_data, notify); } void gtk_container_foreach_full (GtkContainer *container, GtkCallback callback, GtkCallbackMarshal marshal, gpointer callback_data, GtkDestroyNotify notify) { g_return_if_fail (container != NULL); g_return_if_fail (GTK_IS_CONTAINER (container)); if (marshal) { GtkForeachData fdata; fdata.container = GTK_OBJECT (container); fdata.callback = marshal; fdata.callback_data = callback_data; gtk_container_foreach (container, gtk_container_foreach_unmarshal, &fdata); } else { g_return_if_fail (callback != NULL); gtk_container_foreach (container, callback, &callback_data); } if (notify) notify (callback_data); } gint gtk_container_focus (GtkContainer *container, GtkDirectionType direction) { gint return_val; g_return_val_if_fail (container != NULL, FALSE); g_return_val_if_fail (GTK_IS_CONTAINER (container), FALSE); gtk_signal_emit (GTK_OBJECT (container), container_signals[FOCUS], direction, &return_val); return return_val; } void gtk_container_set_focus_child (GtkContainer *container, GtkWidget *widget) { g_return_if_fail (container != NULL); g_return_if_fail (GTK_IS_CONTAINER (container)); if (widget) g_return_if_fail (GTK_IS_WIDGET (container)); gtk_signal_emit (GTK_OBJECT (container), container_signals[SET_FOCUS_CHILD], widget); } GList* gtk_container_children (GtkContainer *container) { GList *children; children = NULL; gtk_container_foreach (container, gtk_container_children_callback, &children); return g_list_reverse (children); } void gtk_container_register_toplevel (GtkContainer *container) { gtk_widget_ref (GTK_WIDGET (container)); gtk_object_sink (GTK_OBJECT (container)); } void gtk_container_unregister_toplevel (GtkContainer *container) { gtk_widget_unref (GTK_WIDGET (container)); } void gtk_container_real_set_focus_child (GtkContainer *container, GtkWidget *child) { g_return_if_fail (container != NULL); g_return_if_fail (GTK_IS_CONTAINER (container)); if (child) g_return_if_fail (GTK_IS_WIDGET (child)); if (child != container->focus_child) { if (container->focus_child) gtk_widget_unref (container->focus_child); container->focus_child = child; if (container->focus_child) gtk_widget_ref (container->focus_child); } /* check for h/v adjustments */ if (container->focus_child) { GtkAdjustment *adjustment; adjustment = gtk_object_get_data_by_id (GTK_OBJECT (container), vadjustment_key_id); if (adjustment) gtk_adjustment_clamp_page (adjustment, container->focus_child->allocation.y, (container->focus_child->allocation.y + container->focus_child->allocation.height)); adjustment = gtk_object_get_data_by_id (GTK_OBJECT (container), hadjustment_key_id); if (adjustment) gtk_adjustment_clamp_page (adjustment, container->focus_child->allocation.x, (container->focus_child->allocation.x + container->focus_child->allocation.width)); } } static gint gtk_container_real_focus (GtkContainer *container, GtkDirectionType direction) { GList *children; GList *tmp_list; GList *tmp_list2; gint return_val; g_return_val_if_fail (container != NULL, FALSE); g_return_val_if_fail (GTK_IS_CONTAINER (container), FALSE); /* Fail if the container is inappropriate for focus movement */ if (!GTK_WIDGET_DRAWABLE (container) || !GTK_WIDGET_SENSITIVE (container)) return FALSE; return_val = FALSE; if (GTK_WIDGET_CAN_FOCUS (container)) { gtk_widget_grab_focus (GTK_WIDGET (container)); return_val = TRUE; } else { /* Get a list of the containers children */ children = NULL; gtk_container_forall (container, gtk_container_children_callback, &children); children = g_list_reverse (children); /* children = gtk_container_children (container); */ if (children) { /* Remove any children which are inappropriate for focus movement */ tmp_list = children; while (tmp_list) { if (GTK_WIDGET_SENSITIVE (tmp_list->data) && GTK_WIDGET_DRAWABLE (tmp_list->data) && (GTK_IS_CONTAINER (tmp_list->data) || GTK_WIDGET_CAN_FOCUS (tmp_list->data))) tmp_list = tmp_list->next; else { tmp_list2 = tmp_list; tmp_list = tmp_list->next; children = g_list_remove_link (children, tmp_list2); g_list_free_1 (tmp_list2); } } switch (direction) { case GTK_DIR_TAB_FORWARD: case GTK_DIR_TAB_BACKWARD: return_val = gtk_container_focus_tab (container, children, direction); break; case GTK_DIR_UP: case GTK_DIR_DOWN: return_val = gtk_container_focus_up_down (container, children, direction); break; case GTK_DIR_LEFT: case GTK_DIR_RIGHT: return_val = gtk_container_focus_left_right (container, children, direction); break; } g_list_free (children); } } return return_val; } static gint gtk_container_focus_tab (GtkContainer *container, GList *children, GtkDirectionType direction) { GtkWidget *child; GtkWidget *child2; GList *tmp_list; guint length; guint i, j; length = g_list_length (children); /* sort the children in the y direction */ for (i = 1; i < length; i++) { j = i; tmp_list = g_list_nth (children, j); child = tmp_list->data; while (j > 0) { child2 = tmp_list->prev->data; if (child->allocation.y < child2->allocation.y) { tmp_list->data = tmp_list->prev->data; tmp_list = tmp_list->prev; j--; } else break; } tmp_list->data = child; } /* sort the children in the x direction while * maintaining the y direction sort. */ for (i = 1; i < length; i++) { j = i; tmp_list = g_list_nth (children, j); child = tmp_list->data; while (j > 0) { child2 = tmp_list->prev->data; if ((child->allocation.x < child2->allocation.x) && (child->allocation.y == child2->allocation.y)) { tmp_list->data = tmp_list->prev->data; tmp_list = tmp_list->prev; j--; } else break; } tmp_list->data = child; } /* if we are going backwards then reverse the order * of the children. */ if (direction == GTK_DIR_TAB_BACKWARD) children = g_list_reverse (children); return gtk_container_focus_move (container, children, direction); } static gint gtk_container_focus_up_down (GtkContainer *container, GList *children, GtkDirectionType direction) { GtkWidget *child; GtkWidget *child2; GList *tmp_list; gint dist1, dist2; gint focus_x; gint focus_width; guint length; guint i, j; /* return failure if there isn't a focus child */ if (container->focus_child) { focus_width = container->focus_child->allocation.width / 2; focus_x = container->focus_child->allocation.x + focus_width; } else { focus_width = GTK_WIDGET (container)->allocation.width; if (GTK_WIDGET_NO_WINDOW (container)) focus_x = GTK_WIDGET (container)->allocation.x; else focus_x = 0; } length = g_list_length (children); /* sort the children in the y direction */ for (i = 1; i < length; i++) { j = i; tmp_list = g_list_nth (children, j); child = tmp_list->data; while (j > 0) { child2 = tmp_list->prev->data; if (child->allocation.y < child2->allocation.y) { tmp_list->data = tmp_list->prev->data; tmp_list = tmp_list->prev; j--; } else break; } tmp_list->data = child; } /* sort the children in distance in the x direction * in distance from the current focus child while maintaining the * sort in the y direction */ for (i = 1; i < length; i++) { j = i; tmp_list = g_list_nth (children, j); child = tmp_list->data; dist1 = (child->allocation.x + child->allocation.width / 2) - focus_x; while (j > 0) { child2 = tmp_list->prev->data; dist2 = (child2->allocation.x + child2->allocation.width / 2) - focus_x; if ((dist1 < dist2) && (child->allocation.y >= child2->allocation.y)) { tmp_list->data = tmp_list->prev->data; tmp_list = tmp_list->prev; j--; } else break; } tmp_list->data = child; } /* go and invalidate any widget which is too * far from the focus widget. */ if (!container->focus_child && (direction == GTK_DIR_UP)) focus_x += focus_width; tmp_list = children; while (tmp_list) { child = tmp_list->data; dist1 = (child->allocation.x + child->allocation.width / 2) - focus_x; if (((direction == GTK_DIR_DOWN) && (dist1 < 0)) || ((direction == GTK_DIR_UP) && (dist1 > 0))) tmp_list->data = NULL; tmp_list = tmp_list->next; } if (direction == GTK_DIR_UP) children = g_list_reverse (children); return gtk_container_focus_move (container, children, direction); } static gint gtk_container_focus_left_right (GtkContainer *container, GList *children, GtkDirectionType direction) { GtkWidget *child; GtkWidget *child2; GList *tmp_list; gint dist1, dist2; gint focus_y; gint focus_height; guint length; guint i, j; /* return failure if there isn't a focus child */ if (container->focus_child) { focus_height = container->focus_child->allocation.height / 2; focus_y = container->focus_child->allocation.y + focus_height; } else { focus_height = GTK_WIDGET (container)->allocation.height; if (GTK_WIDGET_NO_WINDOW (container)) focus_y = GTK_WIDGET (container)->allocation.y; else focus_y = 0; } length = g_list_length (children); /* sort the children in the x direction */ for (i = 1; i < length; i++) { j = i; tmp_list = g_list_nth (children, j); child = tmp_list->data; while (j > 0) { child2 = tmp_list->prev->data; if (child->allocation.x < child2->allocation.x) { tmp_list->data = tmp_list->prev->data; tmp_list = tmp_list->prev; j--; } else break; } tmp_list->data = child; } /* sort the children in distance in the y direction * in distance from the current focus child while maintaining the * sort in the x direction */ for (i = 1; i < length; i++) { j = i; tmp_list = g_list_nth (children, j); child = tmp_list->data; dist1 = (child->allocation.y + child->allocation.height / 2) - focus_y; while (j > 0) { child2 = tmp_list->prev->data; dist2 = (child2->allocation.y + child2->allocation.height / 2) - focus_y; if ((dist1 < dist2) && (child->allocation.x >= child2->allocation.x)) { tmp_list->data = tmp_list->prev->data; tmp_list = tmp_list->prev; j--; } else break; } tmp_list->data = child; } /* go and invalidate any widget which is too * far from the focus widget. */ if (!container->focus_child && (direction == GTK_DIR_LEFT)) focus_y += focus_height; tmp_list = children; while (tmp_list) { child = tmp_list->data; dist1 = (child->allocation.y + child->allocation.height / 2) - focus_y; if (((direction == GTK_DIR_RIGHT) && (dist1 < 0)) || ((direction == GTK_DIR_LEFT) && (dist1 > 0))) tmp_list->data = NULL; tmp_list = tmp_list->next; } if (direction == GTK_DIR_LEFT) children = g_list_reverse (children); return gtk_container_focus_move (container, children, direction); } static gint gtk_container_focus_move (GtkContainer *container, GList *children, GtkDirectionType direction) { GtkWidget *focus_child; GtkWidget *child; focus_child = container->focus_child; gtk_container_set_focus_child (container, NULL); while (children) { child = children->data; children = children->next; if (!child) continue; if (focus_child) { if (focus_child == child) { focus_child = NULL; if (GTK_WIDGET_DRAWABLE (child) && GTK_IS_CONTAINER (child) && !GTK_WIDGET_HAS_FOCUS (child)) if (gtk_container_focus (GTK_CONTAINER (child), direction)) return TRUE; } } else if (GTK_WIDGET_DRAWABLE (child)) { if (GTK_IS_CONTAINER (child)) { if (gtk_container_focus (GTK_CONTAINER (child), direction)) return TRUE; } else if (GTK_WIDGET_CAN_FOCUS (child)) { gtk_widget_grab_focus (child); return TRUE; } } } return FALSE; } static void gtk_container_children_callback (GtkWidget *widget, gpointer client_data) { GList **children; children = (GList**) client_data; *children = g_list_prepend (*children, widget); } void gtk_container_set_focus_vadjustment (GtkContainer *container, GtkAdjustment *adjustment) { g_return_if_fail (container != NULL); g_return_if_fail (GTK_IS_CONTAINER (container)); if (adjustment) g_return_if_fail (GTK_IS_ADJUSTMENT (adjustment)); if (adjustment) gtk_object_ref (GTK_OBJECT(adjustment)); gtk_object_set_data_by_id_full (GTK_OBJECT (container), vadjustment_key_id, adjustment, (GtkDestroyNotify) gtk_object_unref); } void gtk_container_set_focus_hadjustment (GtkContainer *container, GtkAdjustment *adjustment) { g_return_if_fail (container != NULL); g_return_if_fail (GTK_IS_CONTAINER (container)); if (adjustment) g_return_if_fail (GTK_IS_ADJUSTMENT (adjustment)); if (adjustment) gtk_object_ref (GTK_OBJECT (adjustment)); gtk_object_set_data_by_id_full (GTK_OBJECT (container), hadjustment_key_id, adjustment, (GtkDestroyNotify) gtk_object_unref); } static void gtk_container_show_all (GtkWidget *widget) { g_return_if_fail (widget != NULL); g_return_if_fail (GTK_IS_CONTAINER (widget)); gtk_container_foreach (GTK_CONTAINER (widget), (GtkCallback) gtk_widget_show_all, NULL); gtk_widget_show (widget); } static void gtk_container_hide_all (GtkWidget *widget) { g_return_if_fail (widget != NULL); g_return_if_fail (GTK_IS_CONTAINER (widget)); gtk_widget_hide (widget); gtk_container_foreach (GTK_CONTAINER (widget), (GtkCallback) gtk_widget_hide_all, NULL); }