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 Library 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 * Library General Public License for more details.
14 * You should have received a copy of the GNU Library 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.
22 static void gtk_bin_class_init (GtkBinClass *klass);
23 static void gtk_bin_init (GtkBin *bin);
24 static void gtk_bin_map (GtkWidget *widget);
25 static void gtk_bin_unmap (GtkWidget *widget);
26 static void gtk_bin_draw (GtkWidget *widget,
28 static gint gtk_bin_expose (GtkWidget *widget,
29 GdkEventExpose *event);
30 static void gtk_bin_add (GtkContainer *container,
32 static void gtk_bin_remove (GtkContainer *container,
34 static void gtk_bin_forall (GtkContainer *container,
35 gboolean include_internals,
37 gpointer callback_data);
38 static GtkType gtk_bin_child_type (GtkContainer*container);
41 static GtkContainerClass *parent_class = NULL;
45 gtk_bin_get_type (void)
47 static guint bin_type = 0;
51 GtkTypeInfo bin_info =
56 (GtkClassInitFunc) gtk_bin_class_init,
57 (GtkObjectInitFunc) gtk_bin_init,
58 /* reserved_1 */ NULL,
59 /* reserved_2 */ NULL,
60 (GtkClassInitFunc) NULL,
63 bin_type = gtk_type_unique (GTK_TYPE_CONTAINER, &bin_info);
70 gtk_bin_class_init (GtkBinClass *class)
72 GtkObjectClass *object_class;
73 GtkWidgetClass *widget_class;
74 GtkContainerClass *container_class;
76 object_class = (GtkObjectClass*) class;
77 widget_class = (GtkWidgetClass*) class;
78 container_class = (GtkContainerClass*) class;
80 parent_class = gtk_type_class (GTK_TYPE_CONTAINER);
82 widget_class->map = gtk_bin_map;
83 widget_class->unmap = gtk_bin_unmap;
84 widget_class->draw = gtk_bin_draw;
85 widget_class->expose_event = gtk_bin_expose;
87 container_class->add = gtk_bin_add;
88 container_class->remove = gtk_bin_remove;
89 container_class->forall = gtk_bin_forall;
90 container_class->child_type = gtk_bin_child_type;
94 gtk_bin_init (GtkBin *bin)
96 GTK_WIDGET_SET_FLAGS (bin, GTK_NO_WINDOW);
103 gtk_bin_child_type (GtkContainer *container)
105 if (!GTK_BIN (container)->child)
106 return GTK_TYPE_WIDGET;
108 return GTK_TYPE_NONE;
112 gtk_bin_map (GtkWidget *widget)
116 g_return_if_fail (widget != NULL);
117 g_return_if_fail (GTK_IS_BIN (widget));
119 GTK_WIDGET_SET_FLAGS (widget, GTK_MAPPED);
120 bin = GTK_BIN (widget);
122 if (!GTK_WIDGET_NO_WINDOW (widget))
123 gdk_window_show (widget->window);
125 gtk_widget_queue_draw (widget);
128 GTK_WIDGET_VISIBLE (bin->child) &&
129 !GTK_WIDGET_MAPPED (bin->child))
130 gtk_widget_map (bin->child);
134 gtk_bin_unmap (GtkWidget *widget)
138 g_return_if_fail (widget != NULL);
139 g_return_if_fail (GTK_IS_BIN (widget));
141 GTK_WIDGET_UNSET_FLAGS (widget, GTK_MAPPED);
142 bin = GTK_BIN (widget);
144 if (GTK_WIDGET_NO_WINDOW (widget))
145 gtk_widget_queue_clear (widget);
147 gdk_window_hide (widget->window);
149 if (bin->child && GTK_WIDGET_MAPPED (bin->child))
150 gtk_widget_unmap (bin->child);
154 gtk_bin_draw (GtkWidget *widget,
158 GdkRectangle child_area;
160 g_return_if_fail (widget != NULL);
161 g_return_if_fail (GTK_IS_BIN (widget));
163 bin = GTK_BIN (widget);
165 if (bin->child && GTK_WIDGET_VISIBLE (bin->child) &&
166 gtk_widget_intersect (bin->child, area, &child_area))
167 gtk_widget_draw (bin->child, &child_area);
171 gtk_bin_expose (GtkWidget *widget,
172 GdkEventExpose *event)
175 GdkEventExpose child_event;
177 g_return_val_if_fail (widget != NULL, FALSE);
178 g_return_val_if_fail (GTK_IS_BIN (widget), FALSE);
179 g_return_val_if_fail (event != NULL, FALSE);
181 if (GTK_WIDGET_DRAWABLE (widget))
183 bin = GTK_BIN (widget);
185 child_event = *event;
187 GTK_WIDGET_NO_WINDOW (bin->child) &&
188 gtk_widget_intersect (bin->child, &event->area, &child_event.area))
189 gtk_widget_event (bin->child, (GdkEvent*) &child_event);
197 gtk_bin_add (GtkContainer *container,
202 g_return_if_fail (container != NULL);
203 g_return_if_fail (GTK_IS_BIN (container));
204 g_return_if_fail (child != NULL);
205 g_return_if_fail (GTK_IS_WIDGET (child));
207 bin = GTK_BIN (container);
208 g_return_if_fail (bin->child == NULL);
210 gtk_widget_set_parent (child, GTK_WIDGET (bin));
213 if (GTK_WIDGET_VISIBLE (child->parent))
215 if (GTK_WIDGET_REALIZED (child->parent) &&
216 !GTK_WIDGET_REALIZED (child))
217 gtk_widget_realize (child);
219 if (GTK_WIDGET_MAPPED (child->parent) &&
220 !GTK_WIDGET_MAPPED (child))
221 gtk_widget_map (child);
224 if (GTK_WIDGET_VISIBLE (child) && GTK_WIDGET_VISIBLE (container))
225 gtk_widget_queue_resize (child);
229 gtk_bin_remove (GtkContainer *container,
233 gboolean widget_was_visible;
235 g_return_if_fail (container != NULL);
236 g_return_if_fail (GTK_IS_BIN (container));
237 g_return_if_fail (child != NULL);
238 g_return_if_fail (GTK_IS_WIDGET (child));
240 bin = GTK_BIN (container);
241 g_return_if_fail (bin->child == child);
243 widget_was_visible = GTK_WIDGET_VISIBLE (child);
245 gtk_widget_unparent (child);
248 /* queue resize regardless of GTK_WIDGET_VISIBLE (container),
249 * since that's what is needed by toplevels, which derive from GtkBin.
251 if (widget_was_visible)
252 gtk_widget_queue_resize (GTK_WIDGET (container));
256 gtk_bin_forall (GtkContainer *container,
257 gboolean include_internals,
258 GtkCallback callback,
259 gpointer callback_data)
263 g_return_if_fail (container != NULL);
264 g_return_if_fail (GTK_IS_BIN (container));
265 g_return_if_fail (callback != NULL);
267 bin = GTK_BIN (container);
270 (* callback) (bin->child, callback_data);