1 /* GTK - The GIMP Toolkit
2 * Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
3 * GtkStatusbar Copyright (C) 1998 Shawn T. Amundson
5 * This library is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU Lesser General Public
7 * License as published by the Free Software Foundation; either
8 * version 2 of the License, or (at your option) any later version.
10 * This library is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * Lesser General Public License for more details.
15 * You should have received a copy of the GNU Lesser General Public
16 * License along with this library; if not, write to the
17 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
18 * Boston, MA 02111-1307, USA.
22 * Modified by the GTK+ Team and others 1997-2000. See the AUTHORS
23 * file for a list of people on the GTK+ Team. See the ChangeLog
24 * files for a list of changes. These files are distributed with
25 * GTK+ at ftp://ftp.gtk.org/pub/gtk/.
30 #include "gtksignal.h"
31 #include "gtkstatusbar.h"
41 static void gtk_statusbar_class_init (GtkStatusbarClass *class);
42 static void gtk_statusbar_init (GtkStatusbar *statusbar);
43 static void gtk_statusbar_destroy (GtkObject *object);
44 static void gtk_statusbar_update (GtkStatusbar *statusbar,
48 static GtkContainerClass *parent_class;
49 static guint statusbar_signals[SIGNAL_LAST] = { 0 };
52 gtk_statusbar_get_type (void)
54 static GtkType statusbar_type = 0;
58 static const GtkTypeInfo statusbar_info =
61 sizeof (GtkStatusbar),
62 sizeof (GtkStatusbarClass),
63 (GtkClassInitFunc) gtk_statusbar_class_init,
64 (GtkObjectInitFunc) gtk_statusbar_init,
65 /* reserved_1 */ NULL,
66 /* reserved_2 */ NULL,
67 (GtkClassInitFunc) NULL,
70 statusbar_type = gtk_type_unique (GTK_TYPE_HBOX, &statusbar_info);
73 return statusbar_type;
77 gtk_statusbar_class_init (GtkStatusbarClass *class)
79 GtkObjectClass *object_class;
80 GtkWidgetClass *widget_class;
81 GtkContainerClass *container_class;
83 object_class = (GtkObjectClass *) class;
84 widget_class = (GtkWidgetClass *) class;
85 container_class = (GtkContainerClass *) class;
87 parent_class = gtk_type_class (GTK_TYPE_HBOX);
89 object_class->destroy = gtk_statusbar_destroy;
91 class->messages_mem_chunk = g_mem_chunk_new ("GtkStatusBar messages mem chunk",
92 sizeof (GtkStatusbarMsg),
93 sizeof (GtkStatusbarMsg) * 64,
96 class->text_pushed = gtk_statusbar_update;
97 class->text_popped = gtk_statusbar_update;
99 statusbar_signals[SIGNAL_TEXT_PUSHED] =
100 gtk_signal_new ("text_pushed",
102 GTK_CLASS_TYPE (object_class),
103 GTK_SIGNAL_OFFSET (GtkStatusbarClass, text_pushed),
104 gtk_marshal_VOID__UINT_STRING,
108 statusbar_signals[SIGNAL_TEXT_POPPED] =
109 gtk_signal_new ("text_popped",
111 GTK_CLASS_TYPE (object_class),
112 GTK_SIGNAL_OFFSET (GtkStatusbarClass, text_popped),
113 gtk_marshal_VOID__UINT_STRING,
117 gtk_object_class_add_signals (object_class, statusbar_signals, SIGNAL_LAST);
121 gtk_statusbar_init (GtkStatusbar *statusbar)
125 box = GTK_BOX (statusbar);
128 box->homogeneous = FALSE;
130 statusbar->frame = gtk_frame_new (NULL);
131 gtk_frame_set_shadow_type (GTK_FRAME (statusbar->frame), GTK_SHADOW_IN);
132 gtk_box_pack_start (box, statusbar->frame, TRUE, TRUE, 0);
133 gtk_widget_show (statusbar->frame);
135 statusbar->label = gtk_label_new ("");
136 gtk_misc_set_alignment (GTK_MISC (statusbar->label), 0.0, 0.0);
137 gtk_container_add (GTK_CONTAINER (statusbar->frame), statusbar->label);
138 gtk_widget_show (statusbar->label);
140 statusbar->seq_context_id = 1;
141 statusbar->seq_message_id = 1;
142 statusbar->messages = NULL;
143 statusbar->keys = NULL;
147 gtk_statusbar_new (void)
149 return gtk_type_new (GTK_TYPE_STATUSBAR);
153 gtk_statusbar_update (GtkStatusbar *statusbar,
157 g_return_if_fail (statusbar != NULL);
158 g_return_if_fail (GTK_IS_STATUSBAR (statusbar));
163 gtk_label_set_text (GTK_LABEL (statusbar->label), text);
167 gtk_statusbar_get_context_id (GtkStatusbar *statusbar,
168 const gchar *context_description)
173 g_return_val_if_fail (statusbar != NULL, 0);
174 g_return_val_if_fail (GTK_IS_STATUSBAR (statusbar), 0);
175 g_return_val_if_fail (context_description != NULL, 0);
177 /* we need to preserve namespaces on object datas */
178 string = g_strconcat ("gtk-status-bar-context:", context_description, NULL);
180 id = gtk_object_get_data (GTK_OBJECT (statusbar), string);
183 id = g_new (guint, 1);
184 *id = statusbar->seq_context_id++;
185 gtk_object_set_data_full (GTK_OBJECT (statusbar), string, id, (GtkDestroyNotify) g_free);
186 statusbar->keys = g_slist_prepend (statusbar->keys, string);
195 gtk_statusbar_push (GtkStatusbar *statusbar,
199 GtkStatusbarMsg *msg;
200 GtkStatusbarClass *class;
202 g_return_val_if_fail (statusbar != NULL, 0);
203 g_return_val_if_fail (GTK_IS_STATUSBAR (statusbar), 0);
204 g_return_val_if_fail (text != NULL, 0);
206 class = GTK_STATUSBAR_GET_CLASS (statusbar);
207 msg = g_chunk_new (GtkStatusbarMsg, class->messages_mem_chunk);
208 msg->text = g_strdup (text);
209 msg->context_id = context_id;
210 msg->message_id = statusbar->seq_message_id++;
212 statusbar->messages = g_slist_prepend (statusbar->messages, msg);
214 gtk_signal_emit (GTK_OBJECT (statusbar),
215 statusbar_signals[SIGNAL_TEXT_PUSHED],
219 return msg->message_id;
223 gtk_statusbar_pop (GtkStatusbar *statusbar,
226 GtkStatusbarMsg *msg;
228 g_return_if_fail (statusbar != NULL);
229 g_return_if_fail (GTK_IS_STATUSBAR (statusbar));
231 if (statusbar->messages)
235 for (list = statusbar->messages; list; list = list->next)
239 if (msg->context_id == context_id)
241 GtkStatusbarClass *class;
243 class = GTK_STATUSBAR_GET_CLASS (statusbar);
245 statusbar->messages = g_slist_remove_link (statusbar->messages,
248 g_mem_chunk_free (class->messages_mem_chunk, msg);
249 g_slist_free_1 (list);
255 msg = statusbar->messages ? statusbar->messages->data : NULL;
257 gtk_signal_emit (GTK_OBJECT (statusbar),
258 statusbar_signals[SIGNAL_TEXT_POPPED],
259 (guint) (msg ? msg->context_id : 0),
260 msg ? msg->text : NULL);
264 gtk_statusbar_remove (GtkStatusbar *statusbar,
268 GtkStatusbarMsg *msg;
270 g_return_if_fail (statusbar != NULL);
271 g_return_if_fail (GTK_IS_STATUSBAR (statusbar));
272 g_return_if_fail (message_id > 0);
274 msg = statusbar->messages ? statusbar->messages->data : NULL;
279 /* care about signal emission if the topmost item is removed */
280 if (msg->context_id == context_id &&
281 msg->message_id == message_id)
283 gtk_statusbar_pop (statusbar, context_id);
287 for (list = statusbar->messages; list; list = list->next)
291 if (msg->context_id == context_id &&
292 msg->message_id == message_id)
294 GtkStatusbarClass *class;
296 class = GTK_STATUSBAR_GET_CLASS (statusbar);
297 statusbar->messages = g_slist_remove_link (statusbar->messages, list);
299 g_mem_chunk_free (class->messages_mem_chunk, msg);
300 g_slist_free_1 (list);
309 gtk_statusbar_destroy (GtkObject *object)
311 GtkStatusbar *statusbar;
312 GtkStatusbarClass *class;
315 g_return_if_fail (object != NULL);
316 g_return_if_fail (GTK_IS_STATUSBAR (object));
318 statusbar = GTK_STATUSBAR (object);
319 class = GTK_STATUSBAR_GET_CLASS (statusbar);
321 for (list = statusbar->messages; list; list = list->next)
323 GtkStatusbarMsg *msg;
327 g_mem_chunk_free (class->messages_mem_chunk, msg);
329 g_slist_free (statusbar->messages);
330 statusbar->messages = NULL;
332 for (list = statusbar->keys; list; list = list->next)
334 g_slist_free (statusbar->keys);
335 statusbar->keys = NULL;
337 GTK_OBJECT_CLASS (parent_class)->destroy (object);