1 /* GTK - The GIMP Toolkit
2 * Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
4 * This library is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU Lesser General Public
6 * License as published by the Free Software Foundation; either
7 * version 2 of the License, or (at your option) any later version.
9 * This library is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * Lesser General Public License for more details.
14 * You should have received a copy of the GNU Lesser General Public
15 * License along with this library; if not, write to the
16 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
17 * Boston, MA 02111-1307, USA.
21 * Modified by the GTK+ Team and others 1997-2000. See the AUTHORS
22 * file for a list of people on the GTK+ Team. See the ChangeLog
23 * files for a list of changes. These files are distributed with
24 * GTK+ at ftp://ftp.gtk.org/pub/gtk/.
29 #include "gtkextendedlayout.h"
33 static void gtk_bin_add (GtkContainer *container,
35 static void gtk_bin_remove (GtkContainer *container,
37 static void gtk_bin_forall (GtkContainer *container,
38 gboolean include_internals,
40 gpointer callback_data);
41 static GType gtk_bin_child_type (GtkContainer *container);
43 static void gtk_bin_extended_layout_interface_init (GtkExtendedLayoutIface *iface);
45 G_DEFINE_ABSTRACT_TYPE_WITH_CODE (GtkBin, gtk_bin, GTK_TYPE_CONTAINER,
46 G_IMPLEMENT_INTERFACE (GTK_TYPE_EXTENDED_LAYOUT,
47 gtk_bin_extended_layout_interface_init))
51 gtk_bin_class_init (GtkBinClass *class)
53 GtkContainerClass *container_class;
55 container_class = (GtkContainerClass*) class;
57 container_class->add = gtk_bin_add;
58 container_class->remove = gtk_bin_remove;
59 container_class->forall = gtk_bin_forall;
60 container_class->child_type = gtk_bin_child_type;
64 gtk_bin_init (GtkBin *bin)
66 GTK_WIDGET_SET_FLAGS (bin, GTK_NO_WINDOW);
73 gtk_bin_child_type (GtkContainer *container)
75 if (!GTK_BIN (container)->child)
76 return GTK_TYPE_WIDGET;
82 gtk_bin_add (GtkContainer *container,
85 GtkBin *bin = GTK_BIN (container);
87 if (bin->child != NULL)
89 g_warning ("Attempting to add a widget with type %s to a %s, "
90 "but as a GtkBin subclass a %s can only contain one widget at a time; "
91 "it already contains a widget of type %s",
92 g_type_name (G_OBJECT_TYPE (child)),
93 g_type_name (G_OBJECT_TYPE (bin)),
94 g_type_name (G_OBJECT_TYPE (bin)),
95 g_type_name (G_OBJECT_TYPE (bin->child)));
99 gtk_widget_set_parent (child, GTK_WIDGET (bin));
104 gtk_bin_remove (GtkContainer *container,
107 GtkBin *bin = GTK_BIN (container);
108 gboolean widget_was_visible;
110 g_return_if_fail (bin->child == child);
112 widget_was_visible = gtk_widget_get_visible (child);
114 gtk_widget_unparent (child);
117 /* queue resize regardless of gtk_widget_get_visible (container),
118 * since that's what is needed by toplevels, which derive from GtkBin.
120 if (widget_was_visible)
121 gtk_widget_queue_resize (GTK_WIDGET (container));
125 gtk_bin_forall (GtkContainer *container,
126 gboolean include_internals,
127 GtkCallback callback,
128 gpointer callback_data)
130 GtkBin *bin = GTK_BIN (container);
133 (* callback) (bin->child, callback_data);
140 * Gets the child of the #GtkBin, or %NULL if the bin contains
141 * no child widget. The returned widget does not have a reference
142 * added, so you do not need to unref it.
144 * Return value: (transfer none): pointer to child of the #GtkBin
147 gtk_bin_get_child (GtkBin *bin)
149 g_return_val_if_fail (GTK_IS_BIN (bin), NULL);
155 gtk_bin_extended_layout_get_desired_size (GtkExtendedLayout *layout,
156 GtkRequisition *minimum_size,
157 GtkRequisition *natural_size)
159 GtkBin *bin = GTK_BIN (layout);
161 g_return_if_fail (GTK_IS_EXTENDED_LAYOUT (bin->child));
163 gtk_extended_layout_get_desired_size (GTK_EXTENDED_LAYOUT (bin->child),
164 minimum_size, natural_size);
168 gtk_bin_extended_layout_get_width_for_height (GtkExtendedLayout *layout,
173 GtkBin *bin = GTK_BIN (layout);
175 g_return_if_fail (GTK_IS_EXTENDED_LAYOUT (bin->child));
177 gtk_extended_layout_get_width_for_height (GTK_EXTENDED_LAYOUT (bin->child),
178 height, minimum_width, natural_width);
182 gtk_bin_extended_layout_get_height_for_width (GtkExtendedLayout *layout,
184 gint *minimum_height,
185 gint *natural_height)
187 GtkBin *bin = GTK_BIN (layout);
189 g_return_if_fail (GTK_IS_EXTENDED_LAYOUT (bin->child));
191 gtk_extended_layout_get_height_for_width (GTK_EXTENDED_LAYOUT (bin->child),
192 width, minimum_height, natural_height);
196 gtk_bin_extended_layout_interface_init (GtkExtendedLayoutIface *iface)
198 iface->get_desired_size = gtk_bin_extended_layout_get_desired_size;
199 iface->get_height_for_width = gtk_bin_extended_layout_get_height_for_width;
200 iface->get_width_for_height = gtk_bin_extended_layout_get_width_for_height;
203 #define __GTK_BIN_C__
204 #include "gtkaliasdef.c"