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.
23 #include "gtksignal.h"
24 #include "gtkstatusbar.h"
34 static void gtk_statusbar_class_init (GtkStatusbarClass *class);
35 static void gtk_statusbar_init (GtkStatusbar *statusbar);
36 static void gtk_statusbar_destroy (GtkObject *object);
37 static void gtk_statusbar_finalize (GtkObject *object);
38 static void gtk_statusbar_update (GtkStatusbar *statusbar,
42 static GtkContainerClass *parent_class;
43 static guint statusbar_signals[SIGNAL_LAST] = { 0 };
46 gtk_statusbar_get_type (void)
48 static guint statusbar_type = 0;
52 static const GtkTypeInfo statusbar_info =
55 sizeof (GtkStatusbar),
56 sizeof (GtkStatusbarClass),
57 (GtkClassInitFunc) gtk_statusbar_class_init,
58 (GtkObjectInitFunc) gtk_statusbar_init,
59 /* reserved_1 */ NULL,
60 /* reserved_2 */ NULL,
61 (GtkClassInitFunc) NULL,
64 statusbar_type = gtk_type_unique (gtk_hbox_get_type (), &statusbar_info);
67 return statusbar_type;
71 gtk_statusbar_class_init (GtkStatusbarClass *class)
73 GtkObjectClass *object_class;
74 GtkWidgetClass *widget_class;
75 GtkContainerClass *container_class;
77 object_class = (GtkObjectClass *) class;
78 widget_class = (GtkWidgetClass *) class;
79 container_class = (GtkContainerClass *) class;
81 parent_class = gtk_type_class (gtk_hbox_get_type ());
83 statusbar_signals[SIGNAL_TEXT_PUSHED] =
84 gtk_signal_new ("text_pushed",
87 GTK_SIGNAL_OFFSET (GtkStatusbarClass, text_pushed),
88 gtk_marshal_NONE__UINT_STRING,
92 statusbar_signals[SIGNAL_TEXT_POPPED] =
93 gtk_signal_new ("text_popped",
96 GTK_SIGNAL_OFFSET (GtkStatusbarClass, text_popped),
97 gtk_marshal_NONE__UINT_STRING,
101 gtk_object_class_add_signals (object_class, statusbar_signals, SIGNAL_LAST);
103 object_class->destroy = gtk_statusbar_destroy;
104 object_class->finalize = gtk_statusbar_finalize;
106 class->messages_mem_chunk = g_mem_chunk_new ("GtkStatusBar messages mem chunk",
107 sizeof (GtkStatusbarMsg),
108 sizeof (GtkStatusbarMsg) * 64,
111 class->text_pushed = gtk_statusbar_update;
112 class->text_popped = gtk_statusbar_update;
116 gtk_statusbar_init (GtkStatusbar *statusbar)
120 box = GTK_BOX (statusbar);
123 box->homogeneous = FALSE;
125 statusbar->frame = gtk_frame_new (NULL);
126 gtk_frame_set_shadow_type (GTK_FRAME (statusbar->frame), GTK_SHADOW_IN);
127 gtk_box_pack_start (box, statusbar->frame, TRUE, TRUE, 0);
128 gtk_widget_show (statusbar->frame);
130 statusbar->label = gtk_label_new ("");
131 gtk_misc_set_alignment (GTK_MISC (statusbar->label), 0.0, 0.0);
132 gtk_container_add (GTK_CONTAINER (statusbar->frame), statusbar->label);
133 gtk_widget_show (statusbar->label);
135 statusbar->seq_context_id = 1;
136 statusbar->seq_message_id = 1;
137 statusbar->messages = NULL;
138 statusbar->keys = NULL;
142 gtk_statusbar_new (void)
144 return gtk_type_new (gtk_statusbar_get_type ());
148 gtk_statusbar_update (GtkStatusbar *statusbar,
152 g_return_if_fail (statusbar != NULL);
153 g_return_if_fail (GTK_IS_STATUSBAR (statusbar));
158 gtk_label_set (GTK_LABEL (statusbar->label), text);
162 gtk_statusbar_get_context_id (GtkStatusbar *statusbar,
163 const gchar *context_description)
168 g_return_val_if_fail (statusbar != NULL, 0);
169 g_return_val_if_fail (GTK_IS_STATUSBAR (statusbar), 0);
170 g_return_val_if_fail (context_description != NULL, 0);
172 /* we need to preserve namespaces on object datas */
173 string = g_strconcat ("gtk-status-bar-context:", context_description, NULL);
175 id = gtk_object_get_data (GTK_OBJECT (statusbar), string);
178 id = g_new (guint, 1);
179 *id = statusbar->seq_context_id++;
180 gtk_object_set_data_full (GTK_OBJECT (statusbar), string, id, (GtkDestroyNotify) g_free);
181 statusbar->keys = g_slist_prepend (statusbar->keys, string);
190 gtk_statusbar_push (GtkStatusbar *statusbar,
194 GtkStatusbarMsg *msg;
195 GtkStatusbarClass *class;
197 g_return_val_if_fail (statusbar != NULL, 0);
198 g_return_val_if_fail (GTK_IS_STATUSBAR (statusbar), 0);
199 g_return_val_if_fail (text != NULL, 0);
200 g_return_val_if_fail (context_id > 0, 0);
202 class = GTK_STATUSBAR_CLASS (GTK_OBJECT (statusbar)->klass);
203 msg = g_chunk_new (GtkStatusbarMsg, class->messages_mem_chunk);
204 msg->text = g_strdup (text);
205 msg->context_id = context_id;
206 msg->message_id = statusbar->seq_message_id++;
208 statusbar->messages = g_slist_prepend (statusbar->messages, msg);
210 gtk_signal_emit (GTK_OBJECT (statusbar),
211 statusbar_signals[SIGNAL_TEXT_PUSHED],
215 return msg->message_id;
219 gtk_statusbar_pop (GtkStatusbar *statusbar,
222 GtkStatusbarMsg *msg;
224 g_return_if_fail (statusbar != NULL);
225 g_return_if_fail (GTK_IS_STATUSBAR (statusbar));
226 g_return_if_fail (context_id > 0);
228 if (statusbar->messages)
232 for (list = statusbar->messages; list; list = list->next)
236 if (msg->context_id == context_id)
238 GtkStatusbarClass *class;
240 class = GTK_STATUSBAR_CLASS (GTK_OBJECT (statusbar)->klass);
242 statusbar->messages = g_slist_remove_link (statusbar->messages,
245 g_mem_chunk_free (class->messages_mem_chunk, msg);
246 g_slist_free_1 (list);
252 msg = statusbar->messages ? statusbar->messages->data : NULL;
254 gtk_signal_emit (GTK_OBJECT (statusbar),
255 statusbar_signals[SIGNAL_TEXT_POPPED],
256 (guint) (msg ? msg->context_id : 0),
257 msg ? msg->text : NULL);
261 gtk_statusbar_remove (GtkStatusbar *statusbar,
265 GtkStatusbarMsg *msg;
267 g_return_if_fail (statusbar != NULL);
268 g_return_if_fail (GTK_IS_STATUSBAR (statusbar));
269 g_return_if_fail (context_id > 0);
270 g_return_if_fail (message_id > 0);
272 msg = statusbar->messages ? statusbar->messages->data : NULL;
277 /* care about signal emission if the topmost item is removed */
278 if (msg->context_id == context_id &&
279 msg->message_id == message_id)
281 gtk_statusbar_pop (statusbar, context_id);
285 for (list = statusbar->messages; list; list = list->next)
289 if (msg->context_id == context_id &&
290 msg->message_id == message_id)
292 GtkStatusbarClass *class;
294 class = GTK_STATUSBAR_CLASS (GTK_OBJECT (statusbar)->klass);
295 statusbar->messages = g_slist_remove_link (statusbar->messages, list);
297 g_mem_chunk_free (class->messages_mem_chunk, msg);
298 g_slist_free_1 (list);
307 gtk_statusbar_destroy (GtkObject *object)
309 GtkStatusbar *statusbar;
310 GtkStatusbarClass *class;
313 g_return_if_fail (object != NULL);
314 g_return_if_fail (GTK_IS_STATUSBAR (object));
316 statusbar = GTK_STATUSBAR (object);
317 class = GTK_STATUSBAR_CLASS (GTK_OBJECT (statusbar)->klass);
319 for (list = statusbar->messages; list; list = list->next)
321 GtkStatusbarMsg *msg;
325 g_mem_chunk_free (class->messages_mem_chunk, msg);
327 g_slist_free (statusbar->messages);
328 statusbar->messages = NULL;
330 for (list = statusbar->keys; list; list = list->next)
332 g_slist_free (statusbar->keys);
333 statusbar->keys = NULL;
335 GTK_OBJECT_CLASS (parent_class)->destroy (object);
339 gtk_statusbar_finalize (GtkObject *object)
341 GtkStatusbar *statusbar;
343 g_return_if_fail (object != NULL);
344 g_return_if_fail (GTK_IS_STATUSBAR (object));
346 statusbar = GTK_STATUSBAR (object);
348 GTK_OBJECT_CLASS (parent_class)->finalize (object);