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 Library 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 * Library General Public License for more details.
15 * You should have received a copy of the GNU Library 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 1997-1999. 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_finalize (GtkObject *object);
45 static void gtk_statusbar_update (GtkStatusbar *statusbar,
49 static GtkContainerClass *parent_class;
50 static guint statusbar_signals[SIGNAL_LAST] = { 0 };
53 gtk_statusbar_get_type (void)
55 static guint statusbar_type = 0;
59 static const GtkTypeInfo statusbar_info =
62 sizeof (GtkStatusbar),
63 sizeof (GtkStatusbarClass),
64 (GtkClassInitFunc) gtk_statusbar_class_init,
65 (GtkObjectInitFunc) gtk_statusbar_init,
66 /* reserved_1 */ NULL,
67 /* reserved_2 */ NULL,
68 (GtkClassInitFunc) NULL,
71 statusbar_type = gtk_type_unique (gtk_hbox_get_type (), &statusbar_info);
74 return statusbar_type;
78 gtk_statusbar_class_init (GtkStatusbarClass *class)
80 GtkObjectClass *object_class;
81 GtkWidgetClass *widget_class;
82 GtkContainerClass *container_class;
84 object_class = (GtkObjectClass *) class;
85 widget_class = (GtkWidgetClass *) class;
86 container_class = (GtkContainerClass *) class;
88 parent_class = gtk_type_class (gtk_hbox_get_type ());
90 statusbar_signals[SIGNAL_TEXT_PUSHED] =
91 gtk_signal_new ("text_pushed",
94 GTK_SIGNAL_OFFSET (GtkStatusbarClass, text_pushed),
95 gtk_marshal_NONE__UINT_STRING,
99 statusbar_signals[SIGNAL_TEXT_POPPED] =
100 gtk_signal_new ("text_popped",
103 GTK_SIGNAL_OFFSET (GtkStatusbarClass, text_popped),
104 gtk_marshal_NONE__UINT_STRING,
108 gtk_object_class_add_signals (object_class, statusbar_signals, SIGNAL_LAST);
110 object_class->destroy = gtk_statusbar_destroy;
111 object_class->finalize = gtk_statusbar_finalize;
113 class->messages_mem_chunk = g_mem_chunk_new ("GtkStatusBar messages mem chunk",
114 sizeof (GtkStatusbarMsg),
115 sizeof (GtkStatusbarMsg) * 64,
118 class->text_pushed = gtk_statusbar_update;
119 class->text_popped = gtk_statusbar_update;
123 gtk_statusbar_init (GtkStatusbar *statusbar)
127 box = GTK_BOX (statusbar);
130 box->homogeneous = FALSE;
132 statusbar->frame = gtk_frame_new (NULL);
133 gtk_frame_set_shadow_type (GTK_FRAME (statusbar->frame), GTK_SHADOW_IN);
134 gtk_box_pack_start (box, statusbar->frame, TRUE, TRUE, 0);
135 gtk_widget_show (statusbar->frame);
137 statusbar->label = gtk_label_new ("");
138 gtk_misc_set_alignment (GTK_MISC (statusbar->label), 0.0, 0.0);
139 gtk_container_add (GTK_CONTAINER (statusbar->frame), statusbar->label);
140 gtk_widget_show (statusbar->label);
142 statusbar->seq_context_id = 1;
143 statusbar->seq_message_id = 1;
144 statusbar->messages = NULL;
145 statusbar->keys = NULL;
149 gtk_statusbar_new (void)
151 return gtk_type_new (gtk_statusbar_get_type ());
155 gtk_statusbar_update (GtkStatusbar *statusbar,
159 g_return_if_fail (statusbar != NULL);
160 g_return_if_fail (GTK_IS_STATUSBAR (statusbar));
165 gtk_label_set_text (GTK_LABEL (statusbar->label), text);
169 gtk_statusbar_get_context_id (GtkStatusbar *statusbar,
170 const gchar *context_description)
175 g_return_val_if_fail (statusbar != NULL, 0);
176 g_return_val_if_fail (GTK_IS_STATUSBAR (statusbar), 0);
177 g_return_val_if_fail (context_description != NULL, 0);
179 /* we need to preserve namespaces on object datas */
180 string = g_strconcat ("gtk-status-bar-context:", context_description, NULL);
182 id = gtk_object_get_data (GTK_OBJECT (statusbar), string);
185 id = g_new (guint, 1);
186 *id = statusbar->seq_context_id++;
187 gtk_object_set_data_full (GTK_OBJECT (statusbar), string, id, (GtkDestroyNotify) g_free);
188 statusbar->keys = g_slist_prepend (statusbar->keys, string);
197 gtk_statusbar_push (GtkStatusbar *statusbar,
201 GtkStatusbarMsg *msg;
202 GtkStatusbarClass *class;
204 g_return_val_if_fail (statusbar != NULL, 0);
205 g_return_val_if_fail (GTK_IS_STATUSBAR (statusbar), 0);
206 g_return_val_if_fail (text != NULL, 0);
207 g_return_val_if_fail (context_id > 0, 0);
209 class = GTK_STATUSBAR_CLASS (GTK_OBJECT (statusbar)->klass);
210 msg = g_chunk_new (GtkStatusbarMsg, class->messages_mem_chunk);
211 msg->text = g_strdup (text);
212 msg->context_id = context_id;
213 msg->message_id = statusbar->seq_message_id++;
215 statusbar->messages = g_slist_prepend (statusbar->messages, msg);
217 gtk_signal_emit (GTK_OBJECT (statusbar),
218 statusbar_signals[SIGNAL_TEXT_PUSHED],
222 return msg->message_id;
226 gtk_statusbar_pop (GtkStatusbar *statusbar,
229 GtkStatusbarMsg *msg;
231 g_return_if_fail (statusbar != NULL);
232 g_return_if_fail (GTK_IS_STATUSBAR (statusbar));
233 g_return_if_fail (context_id > 0);
235 if (statusbar->messages)
239 for (list = statusbar->messages; list; list = list->next)
243 if (msg->context_id == context_id)
245 GtkStatusbarClass *class;
247 class = GTK_STATUSBAR_CLASS (GTK_OBJECT (statusbar)->klass);
249 statusbar->messages = g_slist_remove_link (statusbar->messages,
252 g_mem_chunk_free (class->messages_mem_chunk, msg);
253 g_slist_free_1 (list);
259 msg = statusbar->messages ? statusbar->messages->data : NULL;
261 gtk_signal_emit (GTK_OBJECT (statusbar),
262 statusbar_signals[SIGNAL_TEXT_POPPED],
263 (guint) (msg ? msg->context_id : 0),
264 msg ? msg->text : NULL);
268 gtk_statusbar_remove (GtkStatusbar *statusbar,
272 GtkStatusbarMsg *msg;
274 g_return_if_fail (statusbar != NULL);
275 g_return_if_fail (GTK_IS_STATUSBAR (statusbar));
276 g_return_if_fail (context_id > 0);
277 g_return_if_fail (message_id > 0);
279 msg = statusbar->messages ? statusbar->messages->data : NULL;
284 /* care about signal emission if the topmost item is removed */
285 if (msg->context_id == context_id &&
286 msg->message_id == message_id)
288 gtk_statusbar_pop (statusbar, context_id);
292 for (list = statusbar->messages; list; list = list->next)
296 if (msg->context_id == context_id &&
297 msg->message_id == message_id)
299 GtkStatusbarClass *class;
301 class = GTK_STATUSBAR_CLASS (GTK_OBJECT (statusbar)->klass);
302 statusbar->messages = g_slist_remove_link (statusbar->messages, list);
304 g_mem_chunk_free (class->messages_mem_chunk, msg);
305 g_slist_free_1 (list);
314 gtk_statusbar_destroy (GtkObject *object)
316 GtkStatusbar *statusbar;
317 GtkStatusbarClass *class;
320 g_return_if_fail (object != NULL);
321 g_return_if_fail (GTK_IS_STATUSBAR (object));
323 statusbar = GTK_STATUSBAR (object);
324 class = GTK_STATUSBAR_CLASS (GTK_OBJECT (statusbar)->klass);
326 for (list = statusbar->messages; list; list = list->next)
328 GtkStatusbarMsg *msg;
332 g_mem_chunk_free (class->messages_mem_chunk, msg);
334 g_slist_free (statusbar->messages);
335 statusbar->messages = NULL;
337 for (list = statusbar->keys; list; list = list->next)
339 g_slist_free (statusbar->keys);
340 statusbar->keys = NULL;
342 GTK_OBJECT_CLASS (parent_class)->destroy (object);
346 gtk_statusbar_finalize (GtkObject *object)
348 GtkStatusbar *statusbar;
350 g_return_if_fail (object != NULL);
351 g_return_if_fail (GTK_IS_STATUSBAR (object));
353 statusbar = GTK_STATUSBAR (object);
355 GTK_OBJECT_CLASS (parent_class)->finalize (object);