forked from AuroraMiddleware/gtk
34e1d6d70b
* gtk/gtkcontainer.c (_gtk_container_queue_resize): Acknowledge the fact that invariants are broken and loop all the way up to the resize container.
2466 lines
70 KiB
C
2466 lines
70 KiB
C
/* GTK - The GIMP Toolkit
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* Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*/
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/*
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* Modified by the GTK+ Team and others 1997-2000. See the AUTHORS
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* file for a list of people on the GTK+ Team. See the ChangeLog
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* files for a list of changes. These files are distributed with
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* GTK+ at ftp://ftp.gtk.org/pub/gtk/.
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*/
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#include <config.h>
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#include <stdarg.h>
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#include <string.h>
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#include <stdlib.h>
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#include "gtkalias.h"
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#include "gtkcontainer.h"
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#include "gtkprivate.h"
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#include "gtkmain.h"
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#include "gtkmarshalers.h"
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#include "gtkwindow.h"
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#include "gtkintl.h"
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#include "gtktoolbar.h"
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#include <gobject/gobjectnotifyqueue.c>
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#include <gobject/gvaluecollector.h>
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enum {
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ADD,
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REMOVE,
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CHECK_RESIZE,
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SET_FOCUS_CHILD,
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LAST_SIGNAL
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};
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enum {
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PROP_0,
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PROP_BORDER_WIDTH,
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PROP_RESIZE_MODE,
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PROP_CHILD
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};
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#define PARAM_SPEC_PARAM_ID(pspec) ((pspec)->param_id)
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#define PARAM_SPEC_SET_PARAM_ID(pspec, id) ((pspec)->param_id = (id))
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/* --- prototypes --- */
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static void gtk_container_base_class_init (GtkContainerClass *klass);
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static void gtk_container_base_class_finalize (GtkContainerClass *klass);
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static void gtk_container_class_init (GtkContainerClass *klass);
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static void gtk_container_init (GtkContainer *container);
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static void gtk_container_destroy (GtkObject *object);
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static void gtk_container_set_property (GObject *object,
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guint prop_id,
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const GValue *value,
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GParamSpec *pspec);
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static void gtk_container_get_property (GObject *object,
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guint prop_id,
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GValue *value,
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GParamSpec *pspec);
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static void gtk_container_add_unimplemented (GtkContainer *container,
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GtkWidget *widget);
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static void gtk_container_remove_unimplemented (GtkContainer *container,
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GtkWidget *widget);
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static void gtk_container_real_check_resize (GtkContainer *container);
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static gboolean gtk_container_focus (GtkWidget *widget,
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GtkDirectionType direction);
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static void gtk_container_real_set_focus_child (GtkContainer *container,
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GtkWidget *widget);
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static gboolean gtk_container_focus_move (GtkContainer *container,
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GList *children,
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GtkDirectionType direction);
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static void gtk_container_children_callback (GtkWidget *widget,
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gpointer client_data);
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static void gtk_container_show_all (GtkWidget *widget);
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static void gtk_container_hide_all (GtkWidget *widget);
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static gint gtk_container_expose (GtkWidget *widget,
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GdkEventExpose *event);
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static void gtk_container_map (GtkWidget *widget);
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static void gtk_container_unmap (GtkWidget *widget);
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static gchar* gtk_container_child_default_composite_name (GtkContainer *container,
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GtkWidget *child);
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/* --- variables --- */
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static const gchar *vadjustment_key = "gtk-vadjustment";
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static guint vadjustment_key_id = 0;
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static const gchar *hadjustment_key = "gtk-hadjustment";
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static guint hadjustment_key_id = 0;
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static GSList *container_resize_queue = NULL;
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static guint container_signals[LAST_SIGNAL] = { 0 };
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static GtkWidgetClass *parent_class = NULL;
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extern GParamSpecPool *_gtk_widget_child_property_pool;
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extern GObjectNotifyContext *_gtk_widget_child_property_notify_context;
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/* --- functions --- */
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GType
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gtk_container_get_type (void)
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{
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static GType container_type = 0;
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if (!container_type)
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{
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static const GTypeInfo container_info =
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{
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sizeof (GtkContainerClass),
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(GBaseInitFunc) gtk_container_base_class_init,
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(GBaseFinalizeFunc) gtk_container_base_class_finalize,
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(GClassInitFunc) gtk_container_class_init,
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NULL /* class_finalize */,
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NULL /* class_data */,
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sizeof (GtkContainer),
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0 /* n_preallocs */,
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(GInstanceInitFunc) gtk_container_init,
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NULL, /* value_table */
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};
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container_type =
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g_type_register_static (GTK_TYPE_WIDGET, "GtkContainer",
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&container_info, G_TYPE_FLAG_ABSTRACT);
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}
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return container_type;
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}
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static void
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gtk_container_base_class_init (GtkContainerClass *class)
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{
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/* reset instance specifc class fields that don't get inherited */
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class->set_child_property = NULL;
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class->get_child_property = NULL;
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}
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static void
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gtk_container_base_class_finalize (GtkContainerClass *class)
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{
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GList *list, *node;
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list = g_param_spec_pool_list_owned (_gtk_widget_child_property_pool, G_OBJECT_CLASS_TYPE (class));
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for (node = list; node; node = node->next)
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{
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GParamSpec *pspec = node->data;
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g_param_spec_pool_remove (_gtk_widget_child_property_pool, pspec);
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PARAM_SPEC_SET_PARAM_ID (pspec, 0);
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g_param_spec_unref (pspec);
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}
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g_list_free (list);
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}
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static void
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gtk_container_class_init (GtkContainerClass *class)
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{
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GObjectClass *gobject_class = G_OBJECT_CLASS (class);
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GtkObjectClass *object_class = GTK_OBJECT_CLASS (class);
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GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (class);
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parent_class = g_type_class_peek_parent (class);
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vadjustment_key_id = g_quark_from_static_string (vadjustment_key);
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hadjustment_key_id = g_quark_from_static_string (hadjustment_key);
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gobject_class->set_property = gtk_container_set_property;
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gobject_class->get_property = gtk_container_get_property;
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object_class->destroy = gtk_container_destroy;
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widget_class->show_all = gtk_container_show_all;
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widget_class->hide_all = gtk_container_hide_all;
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widget_class->expose_event = gtk_container_expose;
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widget_class->map = gtk_container_map;
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widget_class->unmap = gtk_container_unmap;
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widget_class->focus = gtk_container_focus;
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class->add = gtk_container_add_unimplemented;
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class->remove = gtk_container_remove_unimplemented;
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class->check_resize = gtk_container_real_check_resize;
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class->forall = NULL;
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class->set_focus_child = gtk_container_real_set_focus_child;
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class->child_type = NULL;
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class->composite_name = gtk_container_child_default_composite_name;
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g_object_class_install_property (gobject_class,
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PROP_RESIZE_MODE,
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g_param_spec_enum ("resize_mode",
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P_("Resize mode"),
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P_("Specify how resize events are handled"),
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GTK_TYPE_RESIZE_MODE,
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GTK_RESIZE_PARENT,
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G_PARAM_READWRITE));
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g_object_class_install_property (gobject_class,
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PROP_BORDER_WIDTH,
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g_param_spec_uint ("border_width",
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P_("Border width"),
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P_("The width of the empty border outside the containers children"),
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0,
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G_MAXINT,
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0,
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G_PARAM_READWRITE));
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g_object_class_install_property (gobject_class,
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PROP_CHILD,
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g_param_spec_object ("child",
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P_("Child"),
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P_("Can be used to add a new child to the container"),
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GTK_TYPE_WIDGET,
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G_PARAM_WRITABLE));
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container_signals[ADD] =
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g_signal_new ("add",
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G_OBJECT_CLASS_TYPE (object_class),
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G_SIGNAL_RUN_FIRST,
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G_STRUCT_OFFSET (GtkContainerClass, add),
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NULL, NULL,
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_gtk_marshal_VOID__OBJECT,
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G_TYPE_NONE, 1,
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GTK_TYPE_WIDGET);
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container_signals[REMOVE] =
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g_signal_new ("remove",
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G_OBJECT_CLASS_TYPE (object_class),
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G_SIGNAL_RUN_FIRST,
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G_STRUCT_OFFSET (GtkContainerClass, remove),
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NULL, NULL,
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_gtk_marshal_VOID__OBJECT,
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G_TYPE_NONE, 1,
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GTK_TYPE_WIDGET);
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container_signals[CHECK_RESIZE] =
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g_signal_new ("check_resize",
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G_OBJECT_CLASS_TYPE (object_class),
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G_SIGNAL_RUN_LAST,
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G_STRUCT_OFFSET (GtkContainerClass, check_resize),
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NULL, NULL,
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_gtk_marshal_VOID__VOID,
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G_TYPE_NONE, 0);
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container_signals[SET_FOCUS_CHILD] =
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g_signal_new ("set-focus-child",
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G_OBJECT_CLASS_TYPE (object_class),
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G_SIGNAL_RUN_FIRST,
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G_STRUCT_OFFSET (GtkContainerClass, set_focus_child),
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NULL, NULL,
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_gtk_marshal_VOID__OBJECT,
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G_TYPE_NONE, 1,
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GTK_TYPE_WIDGET);
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}
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/**
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* gtk_container_child_type:
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* @container: a #GtkContainer.
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*
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* Returns the type of the children supported by the container.
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*
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* Note that this may return %G_TYPE_NONE to indicate that no more
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* children can be added, e.g. for a #GtkPaned which already has two
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* children.
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*
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* Return value: a #GType.
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**/
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GType
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gtk_container_child_type (GtkContainer *container)
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{
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GType slot;
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GtkContainerClass *class;
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g_return_val_if_fail (GTK_IS_CONTAINER (container), 0);
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class = GTK_CONTAINER_GET_CLASS (container);
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if (class->child_type)
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slot = class->child_type (container);
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else
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slot = G_TYPE_NONE;
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return slot;
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}
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/* --- GtkContainer child property mechanism --- */
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static inline void
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container_get_child_property (GtkContainer *container,
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GtkWidget *child,
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GParamSpec *pspec,
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GValue *value)
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{
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GtkContainerClass *class = g_type_class_peek (pspec->owner_type);
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class->get_child_property (container, child, PARAM_SPEC_PARAM_ID (pspec), value, pspec);
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}
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static inline void
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container_set_child_property (GtkContainer *container,
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GtkWidget *child,
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GParamSpec *pspec,
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const GValue *value,
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GObjectNotifyQueue *nqueue)
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{
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GValue tmp_value = { 0, };
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GtkContainerClass *class = g_type_class_peek (pspec->owner_type);
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/* provide a copy to work from, convert (if necessary) and validate */
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g_value_init (&tmp_value, G_PARAM_SPEC_VALUE_TYPE (pspec));
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if (!g_value_transform (value, &tmp_value))
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g_warning ("unable to set child property `%s' of type `%s' from value of type `%s'",
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pspec->name,
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g_type_name (G_PARAM_SPEC_VALUE_TYPE (pspec)),
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G_VALUE_TYPE_NAME (value));
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else if (g_param_value_validate (pspec, &tmp_value) && !(pspec->flags & G_PARAM_LAX_VALIDATION))
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{
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gchar *contents = g_strdup_value_contents (value);
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g_warning ("value \"%s\" of type `%s' is invalid for property `%s' of type `%s'",
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contents,
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G_VALUE_TYPE_NAME (value),
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pspec->name,
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g_type_name (G_PARAM_SPEC_VALUE_TYPE (pspec)));
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g_free (contents);
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}
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else
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{
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class->set_child_property (container, child, PARAM_SPEC_PARAM_ID (pspec), &tmp_value, pspec);
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g_object_notify_queue_add (G_OBJECT (child), nqueue, pspec);
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}
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g_value_unset (&tmp_value);
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}
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/**
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* gtk_container_child_get_valist:
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* @container: a #GtkContainer
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* @child: a widget which is a child of @container
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* @first_property_name: the name of the first property to get
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* @var_args: a %NULL-terminated list of property names and #GValue*,
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* starting with @first_prop_name.
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*
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* Gets the values of one or more child properties for @child and @container.
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**/
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void
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gtk_container_child_get_valist (GtkContainer *container,
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GtkWidget *child,
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const gchar *first_property_name,
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va_list var_args)
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{
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const gchar *name;
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g_return_if_fail (GTK_IS_CONTAINER (container));
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g_return_if_fail (GTK_IS_WIDGET (child));
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g_return_if_fail (child->parent == GTK_WIDGET (container));
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g_object_ref (container);
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g_object_ref (child);
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name = first_property_name;
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while (name)
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{
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GValue value = { 0, };
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GParamSpec *pspec;
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gchar *error;
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pspec = g_param_spec_pool_lookup (_gtk_widget_child_property_pool,
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name,
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G_OBJECT_TYPE (container),
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TRUE);
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if (!pspec)
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{
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g_warning ("%s: container class `%s' has no child property named `%s'",
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G_STRLOC,
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G_OBJECT_TYPE_NAME (container),
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name);
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break;
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}
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if (!(pspec->flags & G_PARAM_READABLE))
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{
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g_warning ("%s: child property `%s' of container class `%s' is not readable",
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G_STRLOC,
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pspec->name,
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G_OBJECT_TYPE_NAME (container));
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break;
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}
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g_value_init (&value, G_PARAM_SPEC_VALUE_TYPE (pspec));
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container_get_child_property (container, child, pspec, &value);
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G_VALUE_LCOPY (&value, var_args, 0, &error);
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if (error)
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{
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g_warning ("%s: %s", G_STRLOC, error);
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g_free (error);
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g_value_unset (&value);
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break;
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}
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g_value_unset (&value);
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name = va_arg (var_args, gchar*);
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}
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g_object_unref (child);
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g_object_unref (container);
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}
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|
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/**
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* gtk_container_child_get_property:
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* @container: a #GtkContainer
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* @child: a widget which is a child of @container
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* @property_name: the name of the property to get
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* @value: a location to return the value
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*
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* Gets the value of a child property for @child and @container.
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**/
|
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void
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gtk_container_child_get_property (GtkContainer *container,
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GtkWidget *child,
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const gchar *property_name,
|
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GValue *value)
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{
|
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GParamSpec *pspec;
|
|
|
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g_return_if_fail (GTK_IS_CONTAINER (container));
|
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g_return_if_fail (GTK_IS_WIDGET (child));
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g_return_if_fail (child->parent == GTK_WIDGET (container));
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g_return_if_fail (property_name != NULL);
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g_return_if_fail (G_IS_VALUE (value));
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|
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g_object_ref (container);
|
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g_object_ref (child);
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pspec = g_param_spec_pool_lookup (_gtk_widget_child_property_pool, property_name,
|
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G_OBJECT_TYPE (container), TRUE);
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if (!pspec)
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g_warning ("%s: container class `%s' has no child property named `%s'",
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G_STRLOC,
|
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G_OBJECT_TYPE_NAME (container),
|
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property_name);
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|
else if (!(pspec->flags & G_PARAM_READABLE))
|
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g_warning ("%s: child property `%s' of container class `%s' is not readable",
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|
G_STRLOC,
|
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pspec->name,
|
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G_OBJECT_TYPE_NAME (container));
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|
else
|
|
{
|
|
GValue *prop_value, tmp_value = { 0, };
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|
|
/* auto-conversion of the callers value type
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|
*/
|
|
if (G_VALUE_TYPE (value) == G_PARAM_SPEC_VALUE_TYPE (pspec))
|
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{
|
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g_value_reset (value);
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prop_value = value;
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}
|
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else if (!g_value_type_transformable (G_PARAM_SPEC_VALUE_TYPE (pspec), G_VALUE_TYPE (value)))
|
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{
|
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g_warning ("can't retrieve child property `%s' of type `%s' as value of type `%s'",
|
|
pspec->name,
|
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g_type_name (G_PARAM_SPEC_VALUE_TYPE (pspec)),
|
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G_VALUE_TYPE_NAME (value));
|
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g_object_unref (child);
|
|
g_object_unref (container);
|
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return;
|
|
}
|
|
else
|
|
{
|
|
g_value_init (&tmp_value, G_PARAM_SPEC_VALUE_TYPE (pspec));
|
|
prop_value = &tmp_value;
|
|
}
|
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container_get_child_property (container, child, pspec, prop_value);
|
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if (prop_value != value)
|
|
{
|
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g_value_transform (prop_value, value);
|
|
g_value_unset (&tmp_value);
|
|
}
|
|
}
|
|
g_object_unref (child);
|
|
g_object_unref (container);
|
|
}
|
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|
|
/**
|
|
* gtk_container_child_set_valist:
|
|
* @container: a #GtkContainer
|
|
* @child: a widget which is a child of @container
|
|
* @first_property_name: the name of the first property to set
|
|
* @var_args: a %NULL-terminated list of property names and values, starting
|
|
* with @first_prop_name.
|
|
*
|
|
* Sets one or more child properties for @child and @container.
|
|
**/
|
|
void
|
|
gtk_container_child_set_valist (GtkContainer *container,
|
|
GtkWidget *child,
|
|
const gchar *first_property_name,
|
|
va_list var_args)
|
|
{
|
|
GObject *object;
|
|
GObjectNotifyQueue *nqueue;
|
|
const gchar *name;
|
|
|
|
g_return_if_fail (GTK_IS_CONTAINER (container));
|
|
g_return_if_fail (GTK_IS_WIDGET (child));
|
|
g_return_if_fail (child->parent == GTK_WIDGET (container));
|
|
|
|
g_object_ref (container);
|
|
g_object_ref (child);
|
|
|
|
object = G_OBJECT (container);
|
|
nqueue = g_object_notify_queue_freeze (G_OBJECT (child), _gtk_widget_child_property_notify_context);
|
|
name = first_property_name;
|
|
while (name)
|
|
{
|
|
GValue value = { 0, };
|
|
gchar *error = NULL;
|
|
GParamSpec *pspec = g_param_spec_pool_lookup (_gtk_widget_child_property_pool,
|
|
name,
|
|
G_OBJECT_TYPE (container),
|
|
TRUE);
|
|
if (!pspec)
|
|
{
|
|
g_warning ("%s: container class `%s' has no child property named `%s'",
|
|
G_STRLOC,
|
|
G_OBJECT_TYPE_NAME (container),
|
|
name);
|
|
break;
|
|
}
|
|
if (!(pspec->flags & G_PARAM_WRITABLE))
|
|
{
|
|
g_warning ("%s: child property `%s' of container class `%s' is not writable",
|
|
G_STRLOC,
|
|
pspec->name,
|
|
G_OBJECT_TYPE_NAME (container));
|
|
break;
|
|
}
|
|
g_value_init (&value, G_PARAM_SPEC_VALUE_TYPE (pspec));
|
|
G_VALUE_COLLECT (&value, var_args, 0, &error);
|
|
if (error)
|
|
{
|
|
g_warning ("%s: %s", G_STRLOC, error);
|
|
g_free (error);
|
|
|
|
/* we purposely leak the value here, it might not be
|
|
* in a sane state if an error condition occoured
|
|
*/
|
|
break;
|
|
}
|
|
container_set_child_property (container, child, pspec, &value, nqueue);
|
|
g_value_unset (&value);
|
|
name = va_arg (var_args, gchar*);
|
|
}
|
|
g_object_notify_queue_thaw (G_OBJECT (child), nqueue);
|
|
|
|
g_object_unref (container);
|
|
g_object_unref (child);
|
|
}
|
|
|
|
/**
|
|
* gtk_container_child_set_property:
|
|
* @container: a #GtkContainer
|
|
* @child: a widget which is a child of @container
|
|
* @property_name: the name of the property to set
|
|
* @value: the value to set the property to
|
|
*
|
|
* Sets a child property for @child and @container.
|
|
**/
|
|
void
|
|
gtk_container_child_set_property (GtkContainer *container,
|
|
GtkWidget *child,
|
|
const gchar *property_name,
|
|
const GValue *value)
|
|
{
|
|
GObject *object;
|
|
GObjectNotifyQueue *nqueue;
|
|
GParamSpec *pspec;
|
|
|
|
g_return_if_fail (GTK_IS_CONTAINER (container));
|
|
g_return_if_fail (GTK_IS_WIDGET (child));
|
|
g_return_if_fail (child->parent == GTK_WIDGET (container));
|
|
g_return_if_fail (property_name != NULL);
|
|
g_return_if_fail (G_IS_VALUE (value));
|
|
|
|
g_object_ref (container);
|
|
g_object_ref (child);
|
|
|
|
object = G_OBJECT (container);
|
|
nqueue = g_object_notify_queue_freeze (G_OBJECT (child), _gtk_widget_child_property_notify_context);
|
|
pspec = g_param_spec_pool_lookup (_gtk_widget_child_property_pool, property_name,
|
|
G_OBJECT_TYPE (container), TRUE);
|
|
if (!pspec)
|
|
g_warning ("%s: container class `%s' has no child property named `%s'",
|
|
G_STRLOC,
|
|
G_OBJECT_TYPE_NAME (container),
|
|
property_name);
|
|
else if (!(pspec->flags & G_PARAM_WRITABLE))
|
|
g_warning ("%s: child property `%s' of container class `%s' is not writable",
|
|
G_STRLOC,
|
|
pspec->name,
|
|
G_OBJECT_TYPE_NAME (container));
|
|
else
|
|
{
|
|
container_set_child_property (container, child, pspec, value, nqueue);
|
|
}
|
|
g_object_notify_queue_thaw (G_OBJECT (child), nqueue);
|
|
g_object_unref (container);
|
|
g_object_unref (child);
|
|
}
|
|
|
|
/**
|
|
* gtk_container_add_with_properties:
|
|
* @container: a #GtkContainer
|
|
* @widget: a widget to be placed inside @container
|
|
* @first_prop_name: the name of the first child property to set
|
|
* @Varargs: a %NULL-terminated list of property names and values, starting
|
|
* with @first_prop_name.
|
|
*
|
|
* Adds @widget to @container, setting child properties at the same time.
|
|
* See gtk_container_add() and gtk_container_child_set() for more details.
|
|
**/
|
|
void
|
|
gtk_container_add_with_properties (GtkContainer *container,
|
|
GtkWidget *widget,
|
|
const gchar *first_prop_name,
|
|
...)
|
|
{
|
|
g_return_if_fail (GTK_IS_CONTAINER (container));
|
|
g_return_if_fail (GTK_IS_WIDGET (widget));
|
|
g_return_if_fail (widget->parent == NULL);
|
|
|
|
g_object_ref (container);
|
|
g_object_ref (widget);
|
|
gtk_widget_freeze_child_notify (widget);
|
|
|
|
g_signal_emit (container, container_signals[ADD], 0, widget);
|
|
if (widget->parent)
|
|
{
|
|
va_list var_args;
|
|
|
|
va_start (var_args, first_prop_name);
|
|
gtk_container_child_set_valist (container, widget, first_prop_name, var_args);
|
|
va_end (var_args);
|
|
}
|
|
|
|
gtk_widget_thaw_child_notify (widget);
|
|
g_object_unref (widget);
|
|
g_object_unref (container);
|
|
}
|
|
|
|
/**
|
|
* gtk_container_child_set:
|
|
* @container: a #GtkContainer
|
|
* @child: a widget which is a child of @container
|
|
* @first_prop_name: the name of the first property to set
|
|
* @Varargs: a %NULL-terminated list of property names and values, starting
|
|
* with @first_prop_name.
|
|
*
|
|
* Sets one or more child properties for @child and @container.
|
|
**/
|
|
void
|
|
gtk_container_child_set (GtkContainer *container,
|
|
GtkWidget *child,
|
|
const gchar *first_prop_name,
|
|
...)
|
|
{
|
|
va_list var_args;
|
|
|
|
g_return_if_fail (GTK_IS_CONTAINER (container));
|
|
g_return_if_fail (GTK_IS_WIDGET (child));
|
|
g_return_if_fail (child->parent == GTK_WIDGET (container));
|
|
|
|
va_start (var_args, first_prop_name);
|
|
gtk_container_child_set_valist (container, child, first_prop_name, var_args);
|
|
va_end (var_args);
|
|
}
|
|
|
|
/**
|
|
* gtk_container_child_get:
|
|
* @container: a #GtkContainer
|
|
* @child: a widget which is a child of @container
|
|
* @first_prop_name: the name of the first property to get
|
|
* @Varargs: a %NULL-terminated list of property names and #GValue*,
|
|
* starting with @first_prop_name.
|
|
*
|
|
* Gets the values of one or more child properties for @child and @container.
|
|
**/
|
|
void
|
|
gtk_container_child_get (GtkContainer *container,
|
|
GtkWidget *child,
|
|
const gchar *first_prop_name,
|
|
...)
|
|
{
|
|
va_list var_args;
|
|
|
|
g_return_if_fail (GTK_IS_CONTAINER (container));
|
|
g_return_if_fail (GTK_IS_WIDGET (child));
|
|
g_return_if_fail (child->parent == GTK_WIDGET (container));
|
|
|
|
va_start (var_args, first_prop_name);
|
|
gtk_container_child_get_valist (container, child, first_prop_name, var_args);
|
|
va_end (var_args);
|
|
}
|
|
|
|
/**
|
|
* gtk_container_class_install_child_property:
|
|
* @cclass: a #GtkContainerClass
|
|
* @property_id: the id for the property
|
|
* @pspec: the #GParamSpec for the property
|
|
*
|
|
* Installs a child property on a container class.
|
|
**/
|
|
void
|
|
gtk_container_class_install_child_property (GtkContainerClass *cclass,
|
|
guint property_id,
|
|
GParamSpec *pspec)
|
|
{
|
|
g_return_if_fail (GTK_IS_CONTAINER_CLASS (cclass));
|
|
g_return_if_fail (G_IS_PARAM_SPEC (pspec));
|
|
if (pspec->flags & G_PARAM_WRITABLE)
|
|
g_return_if_fail (cclass->set_child_property != NULL);
|
|
if (pspec->flags & G_PARAM_READABLE)
|
|
g_return_if_fail (cclass->get_child_property != NULL);
|
|
g_return_if_fail (property_id > 0);
|
|
g_return_if_fail (PARAM_SPEC_PARAM_ID (pspec) == 0); /* paranoid */
|
|
if (pspec->flags & (G_PARAM_CONSTRUCT | G_PARAM_CONSTRUCT_ONLY))
|
|
g_return_if_fail ((pspec->flags & (G_PARAM_CONSTRUCT | G_PARAM_CONSTRUCT_ONLY)) == 0);
|
|
|
|
if (g_param_spec_pool_lookup (_gtk_widget_child_property_pool, pspec->name, G_OBJECT_CLASS_TYPE (cclass), FALSE))
|
|
{
|
|
g_warning (G_STRLOC ": class `%s' already contains a child property named `%s'",
|
|
G_OBJECT_CLASS_NAME (cclass),
|
|
pspec->name);
|
|
return;
|
|
}
|
|
g_param_spec_ref (pspec);
|
|
g_param_spec_sink (pspec);
|
|
PARAM_SPEC_SET_PARAM_ID (pspec, property_id);
|
|
g_param_spec_pool_insert (_gtk_widget_child_property_pool, pspec, G_OBJECT_CLASS_TYPE (cclass));
|
|
}
|
|
|
|
/**
|
|
* gtk_container_class_find_child_property:
|
|
* @cclass: a #GtkContainerClass
|
|
* @property_name: the name of the child property to find
|
|
* @returns: the #GParamSpec of the child property or %NULL if @class has no
|
|
* child property with that name.
|
|
*
|
|
* Finds a child property of a container class by name.
|
|
*/
|
|
GParamSpec*
|
|
gtk_container_class_find_child_property (GObjectClass *cclass,
|
|
const gchar *property_name)
|
|
{
|
|
g_return_val_if_fail (GTK_IS_CONTAINER_CLASS (cclass), NULL);
|
|
g_return_val_if_fail (property_name != NULL, NULL);
|
|
|
|
return g_param_spec_pool_lookup (_gtk_widget_child_property_pool,
|
|
property_name,
|
|
G_OBJECT_CLASS_TYPE (cclass),
|
|
TRUE);
|
|
}
|
|
|
|
/**
|
|
* gtk_container_class_list_child_properties:
|
|
* @cclass: a #GtkContainerClass
|
|
* @n_properties: location to return the number of child properties found
|
|
* @returns: a newly allocated array of #GParamSpec*. The array must be
|
|
* freed with g_free().
|
|
*
|
|
* Returns all child properties of a container class.
|
|
*/
|
|
GParamSpec**
|
|
gtk_container_class_list_child_properties (GObjectClass *cclass,
|
|
guint *n_properties)
|
|
{
|
|
GParamSpec **pspecs;
|
|
guint n;
|
|
|
|
g_return_val_if_fail (GTK_IS_CONTAINER_CLASS (cclass), NULL);
|
|
|
|
pspecs = g_param_spec_pool_list (_gtk_widget_child_property_pool,
|
|
G_OBJECT_CLASS_TYPE (cclass),
|
|
&n);
|
|
if (n_properties)
|
|
*n_properties = n;
|
|
|
|
return pspecs;
|
|
}
|
|
|
|
static void
|
|
gtk_container_add_unimplemented (GtkContainer *container,
|
|
GtkWidget *widget)
|
|
{
|
|
g_warning ("GtkContainerClass::add not implemented for `%s'", g_type_name (G_TYPE_FROM_INSTANCE (container)));
|
|
}
|
|
|
|
static void
|
|
gtk_container_remove_unimplemented (GtkContainer *container,
|
|
GtkWidget *widget)
|
|
{
|
|
g_warning ("GtkContainerClass::remove not implemented for `%s'", g_type_name (G_TYPE_FROM_INSTANCE (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->reallocate_redraws = FALSE;
|
|
}
|
|
|
|
static void
|
|
gtk_container_destroy (GtkObject *object)
|
|
{
|
|
GtkContainer *container = GTK_CONTAINER (object);
|
|
|
|
if (GTK_CONTAINER_RESIZE_PENDING (container))
|
|
_gtk_container_dequeue_resize_handler (container);
|
|
|
|
/* do this before walking child widgets, to avoid
|
|
* removing children from focus chain one by one.
|
|
*/
|
|
if (container->has_focus_chain)
|
|
gtk_container_unset_focus_chain (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_property (GObject *object,
|
|
guint prop_id,
|
|
const GValue *value,
|
|
GParamSpec *pspec)
|
|
{
|
|
GtkContainer *container = GTK_CONTAINER (object);
|
|
|
|
switch (prop_id)
|
|
{
|
|
case PROP_BORDER_WIDTH:
|
|
gtk_container_set_border_width (container, g_value_get_uint (value));
|
|
break;
|
|
case PROP_RESIZE_MODE:
|
|
gtk_container_set_resize_mode (container, g_value_get_enum (value));
|
|
break;
|
|
case PROP_CHILD:
|
|
gtk_container_add (container, GTK_WIDGET (g_value_get_object (value)));
|
|
break;
|
|
default:
|
|
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
|
|
break;
|
|
}
|
|
}
|
|
|
|
static void
|
|
gtk_container_get_property (GObject *object,
|
|
guint prop_id,
|
|
GValue *value,
|
|
GParamSpec *pspec)
|
|
{
|
|
GtkContainer *container = GTK_CONTAINER (object);
|
|
|
|
switch (prop_id)
|
|
{
|
|
case PROP_BORDER_WIDTH:
|
|
g_value_set_uint (value, container->border_width);
|
|
break;
|
|
case PROP_RESIZE_MODE:
|
|
g_value_set_enum (value, container->resize_mode);
|
|
break;
|
|
default:
|
|
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
|
|
break;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* gtk_container_set_border_width:
|
|
* @container: a #GtkContainer
|
|
* @border_width: amount of blank space to leave <emphasis>outside</emphasis> the container.
|
|
* Valid values are in the range 0-65535 pixels.
|
|
*
|
|
* Sets the border width of the container.
|
|
*
|
|
* The border width of a container is the amount of space to leave
|
|
* around the outside of the container. The only exception to this is
|
|
* #GtkWindow; because toplevel windows can't leave space outside,
|
|
* they leave the space inside. The border is added on all sides of
|
|
* the container. To add space to only one side, one approach is to
|
|
* create a #GtkAlignment widget, call gtk_widget_set_usize() to give
|
|
* it a size, and place it on the side of the container as a spacer.
|
|
**/
|
|
void
|
|
gtk_container_set_border_width (GtkContainer *container,
|
|
guint border_width)
|
|
{
|
|
g_return_if_fail (GTK_IS_CONTAINER (container));
|
|
|
|
if (container->border_width != border_width)
|
|
{
|
|
container->border_width = border_width;
|
|
g_object_notify (G_OBJECT (container), "border_width");
|
|
|
|
if (GTK_WIDGET_REALIZED (container))
|
|
gtk_widget_queue_resize (GTK_WIDGET (container));
|
|
}
|
|
}
|
|
|
|
/**
|
|
* gtk_container_get_border_width:
|
|
* @container: a #GtkContainer
|
|
*
|
|
* Retrieves the border width of the container. See
|
|
* gtk_container_set_border_width().
|
|
*
|
|
* Return value: the current border width
|
|
**/
|
|
guint
|
|
gtk_container_get_border_width (GtkContainer *container)
|
|
{
|
|
g_return_val_if_fail (GTK_IS_CONTAINER (container), 0);
|
|
|
|
return container->border_width;
|
|
}
|
|
|
|
/**
|
|
* gtk_container_add:
|
|
* @container: a #GtkContainer
|
|
* @widget: a widget to be placed inside @container
|
|
*
|
|
* Adds @widget to @container. Typically used for simple containers
|
|
* such as #GtkWindow, #GtkFrame, or #GtkButton; for more complicated
|
|
* layout containers such as #GtkBox or #GtkTable, this function will
|
|
* pick default packing parameters that may not be correct. So
|
|
* consider functions such as gtk_box_pack_start() and
|
|
* gtk_table_attach() as an alternative to gtk_container_add() in
|
|
* those cases. A widget may be added to only one container at a time;
|
|
* you can't place the same widget inside two different containers.
|
|
**/
|
|
void
|
|
gtk_container_add (GtkContainer *container,
|
|
GtkWidget *widget)
|
|
{
|
|
g_return_if_fail (GTK_IS_CONTAINER (container));
|
|
g_return_if_fail (GTK_IS_WIDGET (widget));
|
|
|
|
if (widget->parent != NULL)
|
|
{
|
|
g_warning ("Attempting to add a widget with type %s to a container of "
|
|
"type %s, but the widget is already inside a container of type %s, "
|
|
"the GTK+ FAQ at http://www.gtk.org/faq/ explains how to reparent a widget.",
|
|
g_type_name (G_OBJECT_TYPE (widget)),
|
|
g_type_name (G_OBJECT_TYPE (container)),
|
|
g_type_name (G_OBJECT_TYPE (widget->parent)));
|
|
return;
|
|
}
|
|
|
|
g_signal_emit (container, container_signals[ADD], 0, widget);
|
|
}
|
|
|
|
/**
|
|
* gtk_container_remove:
|
|
* @container: a #GtkContainer
|
|
* @widget: a current child of @container
|
|
*
|
|
* Removes @widget from @container. @widget must be inside @container.
|
|
* Note that @container will own a reference to @widget, and that this
|
|
* may be the last reference held; so removing a widget from its
|
|
* container can destroy that widget. If you want to use @widget
|
|
* again, you need to add a reference to it while it's not inside
|
|
* a container, using g_object_ref(). If you don't want to use @widget
|
|
* again it's usually more efficient to simply destroy it directly
|
|
* using gtk_widget_destroy() since this will remove it from the
|
|
* container and help break any circular reference count cycles.
|
|
**/
|
|
void
|
|
gtk_container_remove (GtkContainer *container,
|
|
GtkWidget *widget)
|
|
{
|
|
g_return_if_fail (GTK_IS_CONTAINER (container));
|
|
g_return_if_fail (GTK_IS_WIDGET (widget));
|
|
|
|
/* When using the deprecated API of the toolbar, it is possible
|
|
* to legitimately call this function with a widget that is not
|
|
* a direct child of the container.
|
|
*/
|
|
g_return_if_fail (GTK_IS_TOOLBAR (container) ||
|
|
widget->parent == GTK_WIDGET (container));
|
|
|
|
g_signal_emit (container, container_signals[REMOVE], 0, widget);
|
|
}
|
|
|
|
void
|
|
_gtk_container_dequeue_resize_handler (GtkContainer *container)
|
|
{
|
|
g_return_if_fail (GTK_IS_CONTAINER (container));
|
|
g_return_if_fail (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_set_resize_mode:
|
|
* @container: a #GtkContainer.
|
|
* @resize_mode: the new resize mode.
|
|
*
|
|
* Sets the resize mode for the container.
|
|
*
|
|
* The resize mode of a container determines whether a resize request
|
|
* will be passed to the container's parent, queued for later execution
|
|
* or executed immediately.
|
|
**/
|
|
void
|
|
gtk_container_set_resize_mode (GtkContainer *container,
|
|
GtkResizeMode resize_mode)
|
|
{
|
|
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;
|
|
|
|
gtk_widget_queue_resize (GTK_WIDGET (container));
|
|
g_object_notify (G_OBJECT (container), "resize_mode");
|
|
}
|
|
}
|
|
|
|
/**
|
|
* gtk_container_get_resize_mode:
|
|
* @container: a #GtkContainer
|
|
*
|
|
* Returns the resize mode for the container. See
|
|
* gtk_container_set_resize_mode ().
|
|
*
|
|
* Return value: the current resize mode
|
|
**/
|
|
GtkResizeMode
|
|
gtk_container_get_resize_mode (GtkContainer *container)
|
|
{
|
|
g_return_val_if_fail (GTK_IS_CONTAINER (container), GTK_RESIZE_PARENT);
|
|
|
|
return container->resize_mode;
|
|
}
|
|
|
|
/**
|
|
* gtk_container_set_reallocate_redraws:
|
|
* @container: a #GtkContainer.
|
|
* @needs_redraws: the new value for the container's @reallocate_redraws flag.
|
|
*
|
|
* Sets the @reallocate_redraws flag of the container to the given value.
|
|
*
|
|
* Containers requesting reallocation redraws get automatically
|
|
* redrawn if any of their children changed allocation.
|
|
**/
|
|
void
|
|
gtk_container_set_reallocate_redraws (GtkContainer *container,
|
|
gboolean needs_redraws)
|
|
{
|
|
g_return_if_fail (GTK_IS_CONTAINER (container));
|
|
|
|
container->reallocate_redraws = needs_redraws ? TRUE : FALSE;
|
|
}
|
|
|
|
static GtkContainer*
|
|
gtk_container_get_resize_container (GtkContainer *container)
|
|
{
|
|
GtkWidget *widget = GTK_WIDGET (container);
|
|
|
|
while (widget->parent)
|
|
{
|
|
widget = widget->parent;
|
|
if (GTK_IS_RESIZE_CONTAINER (widget))
|
|
break;
|
|
}
|
|
|
|
return GTK_IS_RESIZE_CONTAINER (widget) ? (GtkContainer*) widget : NULL;
|
|
}
|
|
|
|
static gboolean
|
|
gtk_container_idle_sizer (gpointer data)
|
|
{
|
|
GDK_THREADS_ENTER ();
|
|
|
|
/* 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,
|
|
* since 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));
|
|
}
|
|
|
|
gdk_window_process_all_updates ();
|
|
|
|
GDK_THREADS_LEAVE ();
|
|
|
|
return FALSE;
|
|
}
|
|
|
|
void
|
|
_gtk_container_queue_resize (GtkContainer *container)
|
|
{
|
|
GtkContainer *resize_container;
|
|
GtkWidget *widget;
|
|
|
|
g_return_if_fail (GTK_IS_CONTAINER (container));
|
|
|
|
widget = GTK_WIDGET (container);
|
|
resize_container = gtk_container_get_resize_container (container);
|
|
|
|
while (TRUE)
|
|
{
|
|
GTK_PRIVATE_SET_FLAG (widget, GTK_ALLOC_NEEDED);
|
|
GTK_PRIVATE_SET_FLAG (widget, GTK_REQUEST_NEEDED);
|
|
if ((resize_container && widget == GTK_WIDGET (resize_container)) ||
|
|
!widget->parent)
|
|
break;
|
|
|
|
widget = widget->parent;
|
|
}
|
|
|
|
if (resize_container)
|
|
{
|
|
if (GTK_WIDGET_VISIBLE (resize_container) &&
|
|
(GTK_WIDGET_TOPLEVEL (resize_container) || GTK_WIDGET_REALIZED (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)
|
|
g_idle_add_full (GTK_PRIORITY_RESIZE,
|
|
gtk_container_idle_sizer,
|
|
NULL, NULL);
|
|
container_resize_queue = g_slist_prepend (container_resize_queue, resize_container);
|
|
}
|
|
break;
|
|
|
|
case GTK_RESIZE_IMMEDIATE:
|
|
gtk_container_check_resize (resize_container);
|
|
break;
|
|
|
|
case GTK_RESIZE_PARENT:
|
|
g_assert_not_reached ();
|
|
break;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
/* we need to let hidden resize containers know that something
|
|
* changed while they where hidden (currently only evaluated by
|
|
* toplevels).
|
|
*/
|
|
resize_container->need_resize = TRUE;
|
|
}
|
|
}
|
|
}
|
|
|
|
void
|
|
gtk_container_check_resize (GtkContainer *container)
|
|
{
|
|
g_return_if_fail (GTK_IS_CONTAINER (container));
|
|
|
|
g_signal_emit (container, container_signals[CHECK_RESIZE], 0);
|
|
}
|
|
|
|
static void
|
|
gtk_container_real_check_resize (GtkContainer *container)
|
|
{
|
|
GtkWidget *widget = GTK_WIDGET (container);
|
|
GtkRequisition requisition;
|
|
|
|
gtk_widget_size_request (widget, &requisition);
|
|
|
|
if (requisition.width > widget->allocation.width ||
|
|
requisition.height > widget->allocation.height)
|
|
{
|
|
if (GTK_IS_RESIZE_CONTAINER (container))
|
|
gtk_widget_size_allocate (GTK_WIDGET (container),
|
|
>K_WIDGET (container)->allocation);
|
|
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 reallocate and let the allocation
|
|
* trickle down via GTK_WIDGET_ALLOC_NEEDED flags.
|
|
*/
|
|
void
|
|
gtk_container_resize_children (GtkContainer *container)
|
|
{
|
|
GtkWidget *widget;
|
|
|
|
/* resizing invariants:
|
|
* toplevels have *always* resize_mode != GTK_RESIZE_PARENT set.
|
|
* containers that have an idle sizer pending must be flagged with
|
|
* RESIZE_PENDING.
|
|
*/
|
|
g_return_if_fail (GTK_IS_CONTAINER (container));
|
|
|
|
widget = GTK_WIDGET (container);
|
|
gtk_widget_size_allocate (widget, &widget->allocation);
|
|
}
|
|
|
|
/**
|
|
* gtk_container_forall:
|
|
* @container: a #GtkContainer
|
|
* @callback: a callback
|
|
* @callback_data: callback user data
|
|
*
|
|
* Invokes @callback on each child of @container, including children
|
|
* that are considered "internal" (implementation details of the
|
|
* container). "Internal" children generally weren't added by the user
|
|
* of the container, but were added by the container implementation
|
|
* itself. Most applications should use gtk_container_foreach(),
|
|
* rather than gtk_container_forall().
|
|
**/
|
|
void
|
|
gtk_container_forall (GtkContainer *container,
|
|
GtkCallback callback,
|
|
gpointer callback_data)
|
|
{
|
|
GtkContainerClass *class;
|
|
|
|
g_return_if_fail (GTK_IS_CONTAINER (container));
|
|
g_return_if_fail (callback != NULL);
|
|
|
|
class = GTK_CONTAINER_GET_CLASS (container);
|
|
|
|
if (class->forall)
|
|
class->forall (container, TRUE, callback, callback_data);
|
|
}
|
|
|
|
/**
|
|
* gtk_container_foreach:
|
|
* @container: a #GtkContainer
|
|
* @callback: a callback
|
|
* @callback_data: callback user data
|
|
*
|
|
* Invokes @callback on each non-internal child of @container. See
|
|
* gtk_container_forall() for details on what constitutes an
|
|
* "internal" child. Most applications should use
|
|
* gtk_container_foreach(), rather than gtk_container_forall().
|
|
**/
|
|
void
|
|
gtk_container_foreach (GtkContainer *container,
|
|
GtkCallback callback,
|
|
gpointer callback_data)
|
|
{
|
|
GtkContainerClass *class;
|
|
|
|
g_return_if_fail (GTK_IS_CONTAINER (container));
|
|
g_return_if_fail (callback != NULL);
|
|
|
|
class = GTK_CONTAINER_GET_CLASS (container);
|
|
|
|
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 = G_TYPE_FROM_INSTANCE (child);
|
|
GTK_VALUE_OBJECT (args[0]) = GTK_OBJECT (child);
|
|
|
|
/* location for return value */
|
|
args[1].name = NULL;
|
|
args[1].type = G_TYPE_NONE;
|
|
|
|
fdata->callback (fdata->container, fdata->callback_data, 1, args);
|
|
}
|
|
|
|
void
|
|
gtk_container_foreach_full (GtkContainer *container,
|
|
GtkCallback callback,
|
|
GtkCallbackMarshal marshal,
|
|
gpointer callback_data,
|
|
GtkDestroyNotify notify)
|
|
{
|
|
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);
|
|
}
|
|
|
|
void
|
|
gtk_container_set_focus_child (GtkContainer *container,
|
|
GtkWidget *widget)
|
|
{
|
|
g_return_if_fail (GTK_IS_CONTAINER (container));
|
|
if (widget)
|
|
g_return_if_fail (GTK_IS_WIDGET (widget));
|
|
|
|
g_signal_emit (container, container_signals[SET_FOCUS_CHILD], 0, widget);
|
|
}
|
|
|
|
/**
|
|
* gtk_container_get_children:
|
|
* @container: a #GtkContainer.
|
|
*
|
|
* Returns the the container's non-internal children. See
|
|
* gtk_container_forall() for details on what constitutes an "internal" child.
|
|
*
|
|
* Return value: a newly-allocated list of the container's non-internal children.
|
|
**/
|
|
GList*
|
|
gtk_container_get_children (GtkContainer *container)
|
|
{
|
|
GList *children = NULL;
|
|
|
|
gtk_container_foreach (container,
|
|
gtk_container_children_callback,
|
|
&children);
|
|
|
|
return g_list_reverse (children);
|
|
}
|
|
|
|
static void
|
|
gtk_container_child_position_callback (GtkWidget *widget,
|
|
gpointer client_data)
|
|
{
|
|
struct {
|
|
GtkWidget *child;
|
|
guint i;
|
|
guint index;
|
|
} *data = client_data;
|
|
|
|
data->i++;
|
|
if (data->child == widget)
|
|
data->index = data->i;
|
|
}
|
|
|
|
static gchar*
|
|
gtk_container_child_default_composite_name (GtkContainer *container,
|
|
GtkWidget *child)
|
|
{
|
|
struct {
|
|
GtkWidget *child;
|
|
guint i;
|
|
guint index;
|
|
} data;
|
|
gchar *name;
|
|
|
|
/* fallback implementation */
|
|
data.child = child;
|
|
data.i = 0;
|
|
data.index = 0;
|
|
gtk_container_forall (container,
|
|
gtk_container_child_position_callback,
|
|
&data);
|
|
|
|
name = g_strdup_printf ("%s-%u",
|
|
g_type_name (G_TYPE_FROM_INSTANCE (child)),
|
|
data.index);
|
|
|
|
return name;
|
|
}
|
|
|
|
gchar*
|
|
_gtk_container_child_composite_name (GtkContainer *container,
|
|
GtkWidget *child)
|
|
{
|
|
g_return_val_if_fail (GTK_IS_CONTAINER (container), NULL);
|
|
g_return_val_if_fail (GTK_IS_WIDGET (child), NULL);
|
|
g_return_val_if_fail (child->parent == GTK_WIDGET (container), NULL);
|
|
|
|
if (GTK_WIDGET_COMPOSITE_CHILD (child))
|
|
{
|
|
static GQuark quark_composite_name = 0;
|
|
gchar *name;
|
|
|
|
if (!quark_composite_name)
|
|
quark_composite_name = g_quark_from_static_string ("gtk-composite-name");
|
|
|
|
name = g_object_get_qdata (G_OBJECT (child), quark_composite_name);
|
|
if (!name)
|
|
{
|
|
GtkContainerClass *class;
|
|
|
|
class = GTK_CONTAINER_GET_CLASS (container);
|
|
if (class->composite_name)
|
|
name = class->composite_name (container, child);
|
|
}
|
|
else
|
|
name = g_strdup (name);
|
|
|
|
return name;
|
|
}
|
|
|
|
return NULL;
|
|
}
|
|
|
|
static void
|
|
gtk_container_real_set_focus_child (GtkContainer *container,
|
|
GtkWidget *child)
|
|
{
|
|
g_return_if_fail (GTK_IS_CONTAINER (container));
|
|
g_return_if_fail (child == NULL || GTK_IS_WIDGET (child));
|
|
|
|
if (child != container->focus_child)
|
|
{
|
|
if (container->focus_child)
|
|
g_object_unref (container->focus_child);
|
|
container->focus_child = child;
|
|
if (container->focus_child)
|
|
g_object_ref (container->focus_child);
|
|
}
|
|
|
|
|
|
/* check for h/v adjustments
|
|
*/
|
|
if (container->focus_child)
|
|
{
|
|
GtkAdjustment *hadj;
|
|
GtkAdjustment *vadj;
|
|
GtkWidget *focus_child;
|
|
gint x, y;
|
|
|
|
hadj = g_object_get_qdata (G_OBJECT (container), hadjustment_key_id);
|
|
vadj = g_object_get_qdata (G_OBJECT (container), vadjustment_key_id);
|
|
if (hadj || vadj)
|
|
{
|
|
|
|
focus_child = container->focus_child;
|
|
while (GTK_IS_CONTAINER (focus_child) &&
|
|
GTK_CONTAINER (focus_child)->focus_child)
|
|
{
|
|
focus_child = GTK_CONTAINER (focus_child)->focus_child;
|
|
}
|
|
|
|
gtk_widget_translate_coordinates (focus_child, container->focus_child,
|
|
0, 0, &x, &y);
|
|
|
|
x += container->focus_child->allocation.x;
|
|
y += container->focus_child->allocation.y;
|
|
|
|
if (vadj)
|
|
gtk_adjustment_clamp_page (vadj, y, y + focus_child->allocation.height);
|
|
|
|
if (hadj)
|
|
gtk_adjustment_clamp_page (hadj, x, x + focus_child->allocation.width);
|
|
}
|
|
}
|
|
}
|
|
|
|
static GList*
|
|
get_focus_chain (GtkContainer *container)
|
|
{
|
|
return g_object_get_data (G_OBJECT (container), "gtk-container-focus-chain");
|
|
}
|
|
|
|
/* same as gtk_container_get_children, except it includes internals
|
|
*/
|
|
static GList *
|
|
gtk_container_get_all_children (GtkContainer *container)
|
|
{
|
|
GList *children = NULL;
|
|
|
|
gtk_container_forall (container,
|
|
gtk_container_children_callback,
|
|
&children);
|
|
|
|
return children;
|
|
}
|
|
|
|
static gboolean
|
|
gtk_container_focus (GtkWidget *widget,
|
|
GtkDirectionType direction)
|
|
{
|
|
GList *children;
|
|
GList *sorted_children;
|
|
gint return_val;
|
|
GtkContainer *container;
|
|
|
|
g_return_val_if_fail (GTK_IS_CONTAINER (widget), FALSE);
|
|
|
|
container = GTK_CONTAINER (widget);
|
|
|
|
return_val = FALSE;
|
|
|
|
if (GTK_WIDGET_CAN_FOCUS (container))
|
|
{
|
|
if (!GTK_WIDGET_HAS_FOCUS (container))
|
|
{
|
|
gtk_widget_grab_focus (GTK_WIDGET (container));
|
|
return_val = TRUE;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
/* Get a list of the containers children, allowing focus
|
|
* chain to override.
|
|
*/
|
|
if (container->has_focus_chain)
|
|
children = g_list_copy (get_focus_chain (container));
|
|
else
|
|
children = gtk_container_get_all_children (container);
|
|
|
|
if (container->has_focus_chain &&
|
|
(direction == GTK_DIR_TAB_FORWARD ||
|
|
direction == GTK_DIR_TAB_BACKWARD))
|
|
{
|
|
sorted_children = g_list_copy (children);
|
|
|
|
if (direction == GTK_DIR_TAB_BACKWARD)
|
|
sorted_children = g_list_reverse (sorted_children);
|
|
}
|
|
else
|
|
sorted_children = _gtk_container_focus_sort (container, children, direction, NULL);
|
|
|
|
return_val = gtk_container_focus_move (container, sorted_children, direction);
|
|
|
|
g_list_free (sorted_children);
|
|
g_list_free (children);
|
|
}
|
|
|
|
return return_val;
|
|
}
|
|
|
|
static gint
|
|
tab_compare (gconstpointer a,
|
|
gconstpointer b,
|
|
gpointer data)
|
|
{
|
|
const GtkWidget *child1 = a;
|
|
const GtkWidget *child2 = b;
|
|
GtkTextDirection text_direction = GPOINTER_TO_INT (data);
|
|
|
|
gint y1 = child1->allocation.y + child1->allocation.height / 2;
|
|
gint y2 = child2->allocation.y + child2->allocation.height / 2;
|
|
|
|
if (y1 == y2)
|
|
{
|
|
gint x1 = child1->allocation.x + child1->allocation.width / 2;
|
|
gint x2 = child2->allocation.x + child2->allocation.width / 2;
|
|
|
|
if (text_direction == GTK_TEXT_DIR_RTL)
|
|
return (x1 < x2) ? 1 : ((x1 == x2) ? 0 : -1);
|
|
else
|
|
return (x1 < x2) ? -1 : ((x1 == x2) ? 0 : 1);
|
|
}
|
|
else
|
|
return (y1 < y2) ? -1 : 1;
|
|
}
|
|
|
|
static GList *
|
|
gtk_container_focus_sort_tab (GtkContainer *container,
|
|
GList *children,
|
|
GtkDirectionType direction,
|
|
GtkWidget *old_focus)
|
|
{
|
|
GtkTextDirection text_direction = gtk_widget_get_direction (GTK_WIDGET (container));
|
|
children = g_list_sort_with_data (children, tab_compare, GINT_TO_POINTER (text_direction));
|
|
|
|
/* if we are going backwards then reverse the order
|
|
* of the children.
|
|
*/
|
|
if (direction == GTK_DIR_TAB_BACKWARD)
|
|
children = g_list_reverse (children);
|
|
|
|
return children;
|
|
}
|
|
|
|
/* Get coordinates of @widget's allocation with respect to
|
|
* allocation of @container.
|
|
*/
|
|
static gboolean
|
|
get_allocation_coords (GtkContainer *container,
|
|
GtkWidget *widget,
|
|
GdkRectangle *allocation)
|
|
{
|
|
*allocation = widget->allocation;
|
|
|
|
return gtk_widget_translate_coordinates (widget, GTK_WIDGET (container),
|
|
0, 0, &allocation->x, &allocation->y);
|
|
}
|
|
|
|
/* Look for a child in @children that is intermediate between
|
|
* the focus widget and container. This widget, if it exists,
|
|
* acts as the starting widget for focus navigation.
|
|
*/
|
|
static GtkWidget *
|
|
find_old_focus (GtkContainer *container,
|
|
GList *children)
|
|
{
|
|
GList *tmp_list = children;
|
|
while (tmp_list)
|
|
{
|
|
GtkWidget *child = tmp_list->data;
|
|
GtkWidget *widget = child;
|
|
|
|
while (widget && widget != (GtkWidget *)container)
|
|
{
|
|
GtkWidget *parent = widget->parent;
|
|
if (parent && ((GtkContainer *)parent)->focus_child != widget)
|
|
goto next;
|
|
|
|
widget = parent;
|
|
}
|
|
|
|
return child;
|
|
|
|
next:
|
|
tmp_list = tmp_list->next;
|
|
}
|
|
|
|
return NULL;
|
|
}
|
|
|
|
static gboolean
|
|
old_focus_coords (GtkContainer *container,
|
|
GdkRectangle *old_focus_rect)
|
|
{
|
|
GtkWidget *widget = GTK_WIDGET (container);
|
|
GtkWidget *toplevel = gtk_widget_get_toplevel (widget);
|
|
|
|
if (toplevel && GTK_IS_WINDOW (toplevel) && GTK_WINDOW (toplevel)->focus_widget)
|
|
{
|
|
GtkWidget *old_focus = GTK_WINDOW (toplevel)->focus_widget;
|
|
|
|
return get_allocation_coords (container, old_focus, old_focus_rect);
|
|
}
|
|
else
|
|
return FALSE;
|
|
}
|
|
|
|
typedef struct _CompareInfo CompareInfo;
|
|
|
|
struct _CompareInfo
|
|
{
|
|
GtkContainer *container;
|
|
gint x;
|
|
gint y;
|
|
gboolean reverse;
|
|
};
|
|
|
|
static gint
|
|
up_down_compare (gconstpointer a,
|
|
gconstpointer b,
|
|
gpointer data)
|
|
{
|
|
GdkRectangle allocation1;
|
|
GdkRectangle allocation2;
|
|
CompareInfo *compare = data;
|
|
gint y1, y2;
|
|
|
|
if (!get_allocation_coords (compare->container, (GtkWidget *)a, &allocation1))
|
|
return 0;
|
|
if (!get_allocation_coords (compare->container, (GtkWidget *)b, &allocation2))
|
|
return 0;
|
|
|
|
y1 = allocation1.y + allocation1.height / 2;
|
|
y2 = allocation2.y + allocation2.height / 2;
|
|
|
|
if (y1 == y2)
|
|
{
|
|
gint x1 = abs (allocation1.x + allocation1.width / 2 - compare->x);
|
|
gint x2 = abs (allocation2.x + allocation2.width / 2 - compare->x);
|
|
|
|
if (compare->reverse)
|
|
return (x1 < x2) ? 1 : ((x1 == x2) ? 0 : -1);
|
|
else
|
|
return (x1 < x2) ? -1 : ((x1 == x2) ? 0 : 1);
|
|
}
|
|
else
|
|
return (y1 < y2) ? -1 : 1;
|
|
}
|
|
|
|
static GList *
|
|
gtk_container_focus_sort_up_down (GtkContainer *container,
|
|
GList *children,
|
|
GtkDirectionType direction,
|
|
GtkWidget *old_focus)
|
|
{
|
|
CompareInfo compare;
|
|
GList *tmp_list;
|
|
GdkRectangle old_allocation;
|
|
|
|
compare.container = container;
|
|
compare.reverse = (direction == GTK_DIR_UP);
|
|
|
|
if (!old_focus)
|
|
old_focus = find_old_focus (container, children);
|
|
|
|
if (old_focus && get_allocation_coords (container, old_focus, &old_allocation))
|
|
{
|
|
gint compare_x1;
|
|
gint compare_x2;
|
|
gint compare_y;
|
|
|
|
/* Delete widgets from list that don't match minimum criteria */
|
|
|
|
compare_x1 = old_allocation.x;
|
|
compare_x2 = old_allocation.x + old_allocation.width;
|
|
|
|
if (direction == GTK_DIR_UP)
|
|
compare_y = old_allocation.y;
|
|
else
|
|
compare_y = old_allocation.y + old_allocation.height;
|
|
|
|
tmp_list = children;
|
|
while (tmp_list)
|
|
{
|
|
GtkWidget *child = tmp_list->data;
|
|
GList *next = tmp_list->next;
|
|
gint child_x1, child_x2;
|
|
GdkRectangle child_allocation;
|
|
|
|
if (child != old_focus)
|
|
{
|
|
if (get_allocation_coords (container, child, &child_allocation))
|
|
{
|
|
child_x1 = child_allocation.x;
|
|
child_x2 = child_allocation.x + child_allocation.width;
|
|
|
|
if ((child_x2 <= compare_x1 || child_x1 >= compare_x2) /* No horizontal overlap */ ||
|
|
(direction == GTK_DIR_DOWN && child_allocation.y + child_allocation.height < compare_y) || /* Not below */
|
|
(direction == GTK_DIR_UP && child_allocation.y > compare_y)) /* Not above */
|
|
{
|
|
children = g_list_delete_link (children, tmp_list);
|
|
}
|
|
}
|
|
else
|
|
children = g_list_delete_link (children, tmp_list);
|
|
}
|
|
|
|
tmp_list = next;
|
|
}
|
|
|
|
compare.x = (compare_x1 + compare_x2) / 2;
|
|
compare.y = old_allocation.y + old_allocation.height / 2;
|
|
}
|
|
else
|
|
{
|
|
/* No old focus widget, need to figure out starting x,y some other way
|
|
*/
|
|
GtkWidget *widget = GTK_WIDGET (container);
|
|
GdkRectangle old_focus_rect;
|
|
|
|
if (old_focus_coords (container, &old_focus_rect))
|
|
{
|
|
compare.x = old_focus_rect.x + old_focus_rect.width / 2;
|
|
}
|
|
else
|
|
{
|
|
if (GTK_WIDGET_NO_WINDOW (widget))
|
|
compare.x = widget->allocation.x + widget->allocation.width / 2;
|
|
else
|
|
compare.x = widget->allocation.width / 2;
|
|
}
|
|
|
|
if (GTK_WIDGET_NO_WINDOW (widget))
|
|
compare.y = (direction == GTK_DIR_DOWN) ? widget->allocation.y : widget->allocation.y + widget->allocation.height;
|
|
else
|
|
compare.y = (direction == GTK_DIR_DOWN) ? 0 : + widget->allocation.height;
|
|
}
|
|
|
|
children = g_list_sort_with_data (children, up_down_compare, &compare);
|
|
|
|
if (compare.reverse)
|
|
children = g_list_reverse (children);
|
|
|
|
return children;
|
|
}
|
|
|
|
static gint
|
|
left_right_compare (gconstpointer a,
|
|
gconstpointer b,
|
|
gpointer data)
|
|
{
|
|
GdkRectangle allocation1;
|
|
GdkRectangle allocation2;
|
|
CompareInfo *compare = data;
|
|
gint x1, x2;
|
|
|
|
if (!get_allocation_coords (compare->container, (GtkWidget *)a, &allocation1))
|
|
return 0;
|
|
if (!get_allocation_coords (compare->container, (GtkWidget *)b, &allocation2))
|
|
return 0;
|
|
|
|
x1 = allocation1.x + allocation1.width / 2;
|
|
x2 = allocation2.x + allocation2.width / 2;
|
|
|
|
if (x1 == x2)
|
|
{
|
|
gint y1 = abs (allocation1.y + allocation1.height / 2 - compare->y);
|
|
gint y2 = abs (allocation2.y + allocation2.height / 2 - compare->y);
|
|
|
|
if (compare->reverse)
|
|
return (y1 < y2) ? 1 : ((y1 == y2) ? 0 : -1);
|
|
else
|
|
return (y1 < y2) ? -1 : ((y1 == y2) ? 0 : 1);
|
|
}
|
|
else
|
|
return (x1 < x2) ? -1 : 1;
|
|
}
|
|
|
|
static GList *
|
|
gtk_container_focus_sort_left_right (GtkContainer *container,
|
|
GList *children,
|
|
GtkDirectionType direction,
|
|
GtkWidget *old_focus)
|
|
{
|
|
CompareInfo compare;
|
|
GList *tmp_list;
|
|
GdkRectangle old_allocation;
|
|
|
|
compare.container = container;
|
|
compare.reverse = (direction == GTK_DIR_LEFT);
|
|
|
|
if (!old_focus)
|
|
old_focus = find_old_focus (container, children);
|
|
|
|
if (old_focus && get_allocation_coords (container, old_focus, &old_allocation))
|
|
{
|
|
gint compare_y1;
|
|
gint compare_y2;
|
|
gint compare_x;
|
|
|
|
/* Delete widgets from list that don't match minimum criteria */
|
|
|
|
compare_y1 = old_allocation.y;
|
|
compare_y2 = old_allocation.y + old_allocation.height;
|
|
|
|
if (direction == GTK_DIR_LEFT)
|
|
compare_x = old_allocation.x;
|
|
else
|
|
compare_x = old_allocation.x + old_allocation.width;
|
|
|
|
tmp_list = children;
|
|
while (tmp_list)
|
|
{
|
|
GtkWidget *child = tmp_list->data;
|
|
GList *next = tmp_list->next;
|
|
gint child_y1, child_y2;
|
|
GdkRectangle child_allocation;
|
|
|
|
if (child != old_focus)
|
|
{
|
|
if (get_allocation_coords (container, child, &child_allocation))
|
|
{
|
|
child_y1 = child_allocation.y;
|
|
child_y2 = child_allocation.y + child_allocation.height;
|
|
|
|
if ((child_y2 <= compare_y1 || child_y1 >= compare_y2) /* No vertical overlap */ ||
|
|
(direction == GTK_DIR_RIGHT && child_allocation.x + child_allocation.width < compare_x) || /* Not to left */
|
|
(direction == GTK_DIR_LEFT && child_allocation.x > compare_x)) /* Not to right */
|
|
{
|
|
children = g_list_delete_link (children, tmp_list);
|
|
}
|
|
}
|
|
else
|
|
children = g_list_delete_link (children, tmp_list);
|
|
}
|
|
|
|
tmp_list = next;
|
|
}
|
|
|
|
compare.y = (compare_y1 + compare_y2) / 2;
|
|
compare.x = old_allocation.x + old_allocation.width / 2;
|
|
}
|
|
else
|
|
{
|
|
/* No old focus widget, need to figure out starting x,y some other way
|
|
*/
|
|
GtkWidget *widget = GTK_WIDGET (container);
|
|
GdkRectangle old_focus_rect;
|
|
|
|
if (old_focus_coords (container, &old_focus_rect))
|
|
{
|
|
compare.y = old_focus_rect.y + old_focus_rect.height / 2;
|
|
}
|
|
else
|
|
{
|
|
if (GTK_WIDGET_NO_WINDOW (widget))
|
|
compare.y = widget->allocation.y + widget->allocation.height / 2;
|
|
else
|
|
compare.y = widget->allocation.height / 2;
|
|
}
|
|
|
|
if (GTK_WIDGET_NO_WINDOW (widget))
|
|
compare.x = (direction == GTK_DIR_RIGHT) ? widget->allocation.x : widget->allocation.x + widget->allocation.width;
|
|
else
|
|
compare.x = (direction == GTK_DIR_RIGHT) ? 0 : widget->allocation.width;
|
|
}
|
|
|
|
children = g_list_sort_with_data (children, left_right_compare, &compare);
|
|
|
|
if (compare.reverse)
|
|
children = g_list_reverse (children);
|
|
|
|
return children;
|
|
}
|
|
|
|
/**
|
|
* gtk_container_focus_sort:
|
|
* @container: a #GtkContainer
|
|
* @children: a list of descendents of @container (they don't
|
|
* have to be direct children.
|
|
* @direction: focus direction
|
|
* @old_focus: widget to use for the starting position, or %NULL
|
|
* to determine this automatically.
|
|
* [ Note, this argument isn't used for GTK_DIR_TAB_*,
|
|
* which is the only @direction we use currently,
|
|
* so perhaps this argument should be removed ]
|
|
*
|
|
* Sorts @children in the correct order for focusing with
|
|
* direction type @direction.
|
|
*
|
|
* Return value: a copy of @children, sorted in correct focusing order,
|
|
* with children that aren't suitable for focusing in this direction
|
|
* removed.
|
|
**/
|
|
GList *
|
|
_gtk_container_focus_sort (GtkContainer *container,
|
|
GList *children,
|
|
GtkDirectionType direction,
|
|
GtkWidget *old_focus)
|
|
{
|
|
children = g_list_copy (children);
|
|
|
|
switch (direction)
|
|
{
|
|
case GTK_DIR_TAB_FORWARD:
|
|
case GTK_DIR_TAB_BACKWARD:
|
|
return gtk_container_focus_sort_tab (container, children, direction, old_focus);
|
|
case GTK_DIR_UP:
|
|
case GTK_DIR_DOWN:
|
|
return gtk_container_focus_sort_up_down (container, children, direction, old_focus);
|
|
case GTK_DIR_LEFT:
|
|
case GTK_DIR_RIGHT:
|
|
return gtk_container_focus_sort_left_right (container, children, direction, old_focus);
|
|
}
|
|
|
|
g_assert_not_reached ();
|
|
|
|
return NULL;
|
|
}
|
|
|
|
static gboolean
|
|
gtk_container_focus_move (GtkContainer *container,
|
|
GList *children,
|
|
GtkDirectionType direction)
|
|
{
|
|
GtkWidget *focus_child;
|
|
GtkWidget *child;
|
|
|
|
focus_child = container->focus_child;
|
|
|
|
while (children)
|
|
{
|
|
child = children->data;
|
|
children = children->next;
|
|
|
|
if (!child)
|
|
continue;
|
|
|
|
if (focus_child)
|
|
{
|
|
if (focus_child == child)
|
|
{
|
|
focus_child = NULL;
|
|
|
|
if (gtk_widget_child_focus (child, direction))
|
|
return TRUE;
|
|
}
|
|
}
|
|
else if (GTK_WIDGET_DRAWABLE (child) &&
|
|
gtk_widget_is_ancestor (child, GTK_WIDGET (container)))
|
|
{
|
|
if (gtk_widget_child_focus (child, direction))
|
|
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);
|
|
}
|
|
|
|
static void
|
|
chain_widget_destroyed (GtkWidget *widget,
|
|
gpointer user_data)
|
|
{
|
|
GtkContainer *container;
|
|
GList *chain;
|
|
|
|
container = GTK_CONTAINER (user_data);
|
|
|
|
chain = g_object_get_data (G_OBJECT (container),
|
|
"gtk-container-focus-chain");
|
|
|
|
chain = g_list_remove (chain, widget);
|
|
|
|
g_signal_handlers_disconnect_by_func (widget,
|
|
chain_widget_destroyed,
|
|
user_data);
|
|
|
|
g_object_set_data (G_OBJECT (container),
|
|
"gtk-container-focus-chain",
|
|
chain);
|
|
}
|
|
|
|
/**
|
|
* gtk_container_set_focus_chain:
|
|
* @container: a #GtkContainer.
|
|
* @focusable_widgets: the new focus chain.
|
|
*
|
|
* Sets a focus chain, overriding the one computed automatically by GTK+.
|
|
*
|
|
* In principle each widget in the chain should be a descendant of the
|
|
* container, but this is not enforced by this method, since it's allowed
|
|
* to set the focus chain before you pack the widgets, or have a widget
|
|
* in the chain that isn't always packed. The necessary checks are done
|
|
* when the focus chain is actually traversed.
|
|
**/
|
|
void
|
|
gtk_container_set_focus_chain (GtkContainer *container,
|
|
GList *focusable_widgets)
|
|
{
|
|
GList *chain;
|
|
GList *tmp_list;
|
|
|
|
g_return_if_fail (GTK_IS_CONTAINER (container));
|
|
|
|
if (container->has_focus_chain)
|
|
gtk_container_unset_focus_chain (container);
|
|
|
|
container->has_focus_chain = TRUE;
|
|
|
|
chain = NULL;
|
|
tmp_list = focusable_widgets;
|
|
while (tmp_list != NULL)
|
|
{
|
|
g_return_if_fail (GTK_IS_WIDGET (tmp_list->data));
|
|
|
|
/* In principle each widget in the chain should be a descendant
|
|
* of the container, but we don't want to check that here, it's
|
|
* expensive and also it's allowed to set the focus chain before
|
|
* you pack the widgets, or have a widget in the chain that isn't
|
|
* always packed. So we check for ancestor during actual traversal.
|
|
*/
|
|
|
|
chain = g_list_prepend (chain, tmp_list->data);
|
|
|
|
g_signal_connect (tmp_list->data,
|
|
"destroy",
|
|
G_CALLBACK (chain_widget_destroyed),
|
|
container);
|
|
|
|
tmp_list = g_list_next (tmp_list);
|
|
}
|
|
|
|
chain = g_list_reverse (chain);
|
|
|
|
g_object_set_data (G_OBJECT (container),
|
|
"gtk-container-focus-chain",
|
|
chain);
|
|
}
|
|
|
|
/**
|
|
* gtk_container_get_focus_chain:
|
|
* @container: a #GtkContainer
|
|
* @focusable_widgets: location to store the focus chain of the
|
|
* container, or %NULL. You should free this list
|
|
* using g_list_free() when you are done with it, however
|
|
* no additional reference count is added to the
|
|
* individual widgets in the focus chain.
|
|
*
|
|
* Retrieves the focus chain of the container, if one has been
|
|
* set explicitly. If no focus chain has been explicitly
|
|
* set, GTK+ computes the focus chain based on the positions
|
|
* of the children. In that case, GTK+ stores %NULL in
|
|
* @focusable_widgets and returns %FALSE.
|
|
*
|
|
* Return value: %TRUE if the focus chain of the container
|
|
* has been set explicitly.
|
|
**/
|
|
gboolean
|
|
gtk_container_get_focus_chain (GtkContainer *container,
|
|
GList **focus_chain)
|
|
{
|
|
g_return_val_if_fail (GTK_IS_CONTAINER (container), FALSE);
|
|
|
|
if (focus_chain)
|
|
{
|
|
if (container->has_focus_chain)
|
|
*focus_chain = g_list_copy (get_focus_chain (container));
|
|
else
|
|
*focus_chain = NULL;
|
|
}
|
|
|
|
return container->has_focus_chain;
|
|
}
|
|
|
|
/**
|
|
* gtk_container_unset_focus_chain:
|
|
* @container: a #GtkContainer.
|
|
*
|
|
* Removes a focus chain explicitly set with gtk_container_set_focus_chain().
|
|
**/
|
|
void
|
|
gtk_container_unset_focus_chain (GtkContainer *container)
|
|
{
|
|
g_return_if_fail (GTK_IS_CONTAINER (container));
|
|
|
|
if (container->has_focus_chain)
|
|
{
|
|
GList *chain;
|
|
GList *tmp_list;
|
|
|
|
chain = get_focus_chain (container);
|
|
|
|
container->has_focus_chain = FALSE;
|
|
|
|
g_object_set_data (G_OBJECT (container), "gtk-container-focus-chain",
|
|
NULL);
|
|
|
|
tmp_list = chain;
|
|
while (tmp_list != NULL)
|
|
{
|
|
g_signal_handlers_disconnect_by_func (tmp_list->data,
|
|
chain_widget_destroyed,
|
|
container);
|
|
|
|
tmp_list = g_list_next (tmp_list);
|
|
}
|
|
|
|
g_list_free (chain);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* gtk_container_set_focus_vadjustment:
|
|
* @container: a #GtkContainer
|
|
* @adjustment: an adjustment which should be adjusted when the focus is moved among the
|
|
* descendents of @container
|
|
*
|
|
* Hooks up an adjustment to focus handling in a container, so when a child of the
|
|
* container is focused, the adjustment is scrolled to show that widget. This function
|
|
* sets the vertical alignment. See gtk_scrolled_window_get_vadjustment() for a typical
|
|
* way of obtaining the adjustment and gtk_container_set_focus_hadjustment() for setting
|
|
* the horizontal adjustment.
|
|
*
|
|
* The adjustments have to be in pixel units and in the same coordinate system as the
|
|
* allocation for immediate children of the container.
|
|
*/
|
|
void
|
|
gtk_container_set_focus_vadjustment (GtkContainer *container,
|
|
GtkAdjustment *adjustment)
|
|
{
|
|
g_return_if_fail (GTK_IS_CONTAINER (container));
|
|
if (adjustment)
|
|
g_return_if_fail (GTK_IS_ADJUSTMENT (adjustment));
|
|
|
|
if (adjustment)
|
|
g_object_ref (adjustment);
|
|
|
|
g_object_set_qdata_full (G_OBJECT (container),
|
|
vadjustment_key_id,
|
|
adjustment,
|
|
g_object_unref);
|
|
}
|
|
|
|
/**
|
|
* gtk_container_get_focus_vadjustment:
|
|
* @container: a #GtkContainer
|
|
*
|
|
* Retrieves the vertical focus adjustment for the container. See
|
|
* gtk_container_set_focus_vadjustment ().
|
|
*
|
|
* Return value: the vertical focus adjustment, or %NULL if
|
|
* none has been set.
|
|
**/
|
|
GtkAdjustment *
|
|
gtk_container_get_focus_vadjustment (GtkContainer *container)
|
|
{
|
|
GtkAdjustment *vadjustment;
|
|
|
|
g_return_val_if_fail (GTK_IS_CONTAINER (container), NULL);
|
|
|
|
vadjustment = g_object_get_qdata (G_OBJECT (container), vadjustment_key_id);
|
|
|
|
return vadjustment;
|
|
}
|
|
|
|
/**
|
|
* gtk_container_set_focus_hadjustment:
|
|
* @container: a #GtkContainer
|
|
* @adjustment: an adjustment which should be adjusted when the focus is moved among the
|
|
* descendents of @container
|
|
*
|
|
* Hooks up an adjustment to focus handling in a container, so when a child of the
|
|
* container is focused, the adjustment is scrolled to show that widget. This function
|
|
* sets the horizontal alignment. See gtk_scrolled_window_get_hadjustment() for a typical
|
|
* way of obtaining the adjustment and gtk_container_set_focus_vadjustment() for setting
|
|
* the vertical adjustment.
|
|
*
|
|
* The adjustments have to be in pixel units and in the same coordinate system as the
|
|
* allocation for immediate children of the container.
|
|
*/
|
|
void
|
|
gtk_container_set_focus_hadjustment (GtkContainer *container,
|
|
GtkAdjustment *adjustment)
|
|
{
|
|
g_return_if_fail (GTK_IS_CONTAINER (container));
|
|
if (adjustment)
|
|
g_return_if_fail (GTK_IS_ADJUSTMENT (adjustment));
|
|
|
|
if (adjustment)
|
|
g_object_ref (adjustment);
|
|
|
|
g_object_set_qdata_full (G_OBJECT (container),
|
|
hadjustment_key_id,
|
|
adjustment,
|
|
g_object_unref);
|
|
}
|
|
|
|
/**
|
|
* gtk_container_get_focus_hadjustment:
|
|
* @container: a #GtkContainer
|
|
*
|
|
* Retrieves the horizontal focus adjustment for the container. See
|
|
* gtk_container_set_focus_hadjustment ().
|
|
*
|
|
* Return value: the horizontal focus adjustment, or %NULL if
|
|
* none has been set.
|
|
**/
|
|
GtkAdjustment *
|
|
gtk_container_get_focus_hadjustment (GtkContainer *container)
|
|
{
|
|
GtkAdjustment *hadjustment;
|
|
|
|
g_return_val_if_fail (GTK_IS_CONTAINER (container), NULL);
|
|
|
|
hadjustment = g_object_get_qdata (G_OBJECT (container), hadjustment_key_id);
|
|
|
|
return hadjustment;
|
|
}
|
|
|
|
|
|
static void
|
|
gtk_container_show_all (GtkWidget *widget)
|
|
{
|
|
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 (GTK_IS_CONTAINER (widget));
|
|
|
|
gtk_widget_hide (widget);
|
|
gtk_container_foreach (GTK_CONTAINER (widget),
|
|
(GtkCallback) gtk_widget_hide_all,
|
|
NULL);
|
|
}
|
|
|
|
|
|
static void
|
|
gtk_container_expose_child (GtkWidget *child,
|
|
gpointer client_data)
|
|
{
|
|
struct {
|
|
GtkWidget *container;
|
|
GdkEventExpose *event;
|
|
} *data = client_data;
|
|
|
|
gtk_container_propagate_expose (GTK_CONTAINER (data->container),
|
|
child,
|
|
data->event);
|
|
}
|
|
|
|
static gint
|
|
gtk_container_expose (GtkWidget *widget,
|
|
GdkEventExpose *event)
|
|
{
|
|
struct {
|
|
GtkWidget *container;
|
|
GdkEventExpose *event;
|
|
} data;
|
|
|
|
g_return_val_if_fail (GTK_IS_CONTAINER (widget), FALSE);
|
|
g_return_val_if_fail (event != NULL, FALSE);
|
|
|
|
|
|
if (GTK_WIDGET_DRAWABLE (widget))
|
|
{
|
|
data.container = widget;
|
|
data.event = event;
|
|
|
|
gtk_container_forall (GTK_CONTAINER (widget),
|
|
gtk_container_expose_child,
|
|
&data);
|
|
}
|
|
|
|
return FALSE;
|
|
}
|
|
|
|
static void
|
|
gtk_container_map_child (GtkWidget *child,
|
|
gpointer client_data)
|
|
{
|
|
if (GTK_WIDGET_VISIBLE (child) &&
|
|
GTK_WIDGET_CHILD_VISIBLE (child) &&
|
|
!GTK_WIDGET_MAPPED (child))
|
|
gtk_widget_map (child);
|
|
}
|
|
|
|
static void
|
|
gtk_container_map (GtkWidget *widget)
|
|
{
|
|
GTK_WIDGET_SET_FLAGS (widget, GTK_MAPPED);
|
|
|
|
gtk_container_forall (GTK_CONTAINER (widget),
|
|
gtk_container_map_child,
|
|
NULL);
|
|
|
|
if (!GTK_WIDGET_NO_WINDOW (widget))
|
|
gdk_window_show (widget->window);
|
|
}
|
|
|
|
static void
|
|
gtk_container_unmap (GtkWidget *widget)
|
|
{
|
|
GTK_WIDGET_UNSET_FLAGS (widget, GTK_MAPPED);
|
|
|
|
if (!GTK_WIDGET_NO_WINDOW (widget))
|
|
gdk_window_hide (widget->window);
|
|
else
|
|
gtk_container_forall (GTK_CONTAINER (widget),
|
|
(GtkCallback)gtk_widget_unmap,
|
|
NULL);
|
|
}
|
|
|
|
/**
|
|
* gtk_container_propagate_expose:
|
|
* @container: a #GtkContainer
|
|
* @child: a child of @container
|
|
* @event: a expose event sent to container
|
|
*
|
|
* When a container receives an expose event, it must send synthetic
|
|
* expose events to all children that don't have their own #GdkWindows.
|
|
* This function provides a convenient way of doing this. A container,
|
|
* when it receives an expose event, calls gtk_container_propagate_expose()
|
|
* once for each child, passing in the event the container received.
|
|
*
|
|
* gtk_container_propagate_expose() takes care of deciding whether
|
|
* an expose event needs to be sent to the child, intersecting
|
|
* the event's area with the child area, and sending the event.
|
|
*
|
|
* In most cases, a container can simply either simply inherit the
|
|
* ::expose implementation from #GtkContainer, or, do some drawing
|
|
* and then chain to the ::expose implementation from #GtkContainer.
|
|
**/
|
|
void
|
|
gtk_container_propagate_expose (GtkContainer *container,
|
|
GtkWidget *child,
|
|
GdkEventExpose *event)
|
|
{
|
|
GdkEvent *child_event;
|
|
|
|
g_return_if_fail (GTK_IS_CONTAINER (container));
|
|
g_return_if_fail (GTK_IS_WIDGET (child));
|
|
g_return_if_fail (event != NULL);
|
|
|
|
g_assert (child->parent == GTK_WIDGET (container));
|
|
|
|
if (GTK_WIDGET_DRAWABLE (child) &&
|
|
GTK_WIDGET_NO_WINDOW (child) &&
|
|
(child->window == event->window))
|
|
{
|
|
child_event = gdk_event_new (GDK_EXPOSE);
|
|
child_event->expose = *event;
|
|
g_object_ref (child_event->expose.window);
|
|
|
|
child_event->expose.region = gtk_widget_region_intersect (child, event->region);
|
|
if (!gdk_region_empty (child_event->expose.region))
|
|
{
|
|
gdk_region_get_clipbox (child_event->expose.region, &child_event->expose.area);
|
|
gtk_widget_send_expose (child, child_event);
|
|
}
|
|
gdk_event_free (child_event);
|
|
}
|
|
}
|