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 typedef void (*SignalTextP) (GtkObject *object,
39 static void gtk_statusbar_class_init (GtkStatusbarClass *class);
40 static void gtk_statusbar_init (GtkStatusbar *statusbar);
41 static void gtk_statusbar_destroy (GtkObject *object);
42 static void gtk_statusbar_finalize (GtkObject *object);
43 static void gtk_statusbar_update (GtkStatusbar *statusbar,
47 static GtkContainerClass *parent_class;
48 static guint statusbar_signals[SIGNAL_LAST] = { 0 };
51 gtk_statusbar_get_type (void)
53 static guint statusbar_type = 0;
57 GtkTypeInfo statusbar_info =
60 sizeof (GtkStatusbar),
61 sizeof (GtkStatusbarClass),
62 (GtkClassInitFunc) gtk_statusbar_class_init,
63 (GtkObjectInitFunc) gtk_statusbar_init,
64 /* reversed_1 */ NULL,
65 /* reversed_2 */ NULL,
66 (GtkClassInitFunc) NULL,
69 statusbar_type = gtk_type_unique (gtk_hbox_get_type (), &statusbar_info);
72 return statusbar_type;
76 gtk_statusbar_marshal_text_p (GtkObject *object,
81 SignalTextP sfunc = (SignalTextP) func;
84 GTK_VALUE_UINT (args[0]),
85 GTK_VALUE_STRING (args[1]),
90 gtk_statusbar_class_init (GtkStatusbarClass *class)
92 GtkObjectClass *object_class;
93 GtkWidgetClass *widget_class;
94 GtkContainerClass *container_class;
96 object_class = (GtkObjectClass *) class;
97 widget_class = (GtkWidgetClass *) class;
98 container_class = (GtkContainerClass *) class;
100 parent_class = gtk_type_class (gtk_hbox_get_type ());
102 statusbar_signals[SIGNAL_TEXT_PUSHED] =
103 gtk_signal_new ("text_pushed",
106 GTK_SIGNAL_OFFSET (GtkStatusbarClass, text_pushed),
107 gtk_statusbar_marshal_text_p,
111 statusbar_signals[SIGNAL_TEXT_POPPED] =
112 gtk_signal_new ("text_popped",
115 GTK_SIGNAL_OFFSET (GtkStatusbarClass, text_popped),
116 gtk_statusbar_marshal_text_p,
120 gtk_object_class_add_signals (object_class, statusbar_signals, SIGNAL_LAST);
122 object_class->destroy = gtk_statusbar_destroy;
123 object_class->finalize = gtk_statusbar_finalize;
125 class->messages_mem_chunk = g_mem_chunk_new ("GtkStatusBar messages mem chunk",
126 sizeof (GtkStatusbarMsg),
127 sizeof (GtkStatusbarMsg) * 64,
130 class->text_pushed = gtk_statusbar_update;
131 class->text_popped = gtk_statusbar_update;
135 gtk_statusbar_init (GtkStatusbar *statusbar)
139 box = GTK_BOX (statusbar);
142 box->homogeneous = FALSE;
144 statusbar->frame = gtk_frame_new (NULL);
145 gtk_frame_set_shadow_type (GTK_FRAME (statusbar->frame), GTK_SHADOW_IN);
146 gtk_box_pack_start (box, statusbar->frame, TRUE, TRUE, 0);
147 gtk_widget_show (statusbar->frame);
149 statusbar->label = gtk_label_new ("");
150 gtk_misc_set_alignment (GTK_MISC (statusbar->label), 0.0, 0.0);
151 gtk_container_add (GTK_CONTAINER (statusbar->frame), statusbar->label);
152 gtk_widget_show (statusbar->label);
154 statusbar->seq_context_id = 1;
155 statusbar->seq_message_id = 1;
156 statusbar->messages = NULL;
157 statusbar->keys = NULL;
161 gtk_statusbar_new (void)
163 return gtk_type_new (gtk_statusbar_get_type ());
167 gtk_statusbar_update (GtkStatusbar *statusbar,
171 g_return_if_fail (statusbar != NULL);
172 g_return_if_fail (GTK_IS_STATUSBAR (statusbar));
177 gtk_label_set (GTK_LABEL (statusbar->label), text);
181 gtk_statusbar_get_context_id (GtkStatusbar *statusbar,
182 const gchar *context_description)
187 g_return_val_if_fail (statusbar != NULL, 0);
188 g_return_val_if_fail (GTK_IS_STATUSBAR (statusbar), 0);
189 g_return_val_if_fail (context_description != NULL, 0);
191 /* we need to preserve namespaces on object datas */
192 string = g_strconcat ("gtk-status-bar-context:", context_description, NULL);
194 id = gtk_object_get_data (GTK_OBJECT (statusbar), string);
197 id = g_new (guint, 1);
198 *id = statusbar->seq_context_id++;
199 gtk_object_set_data_full (GTK_OBJECT (statusbar), string, id, (GtkDestroyNotify) g_free);
200 statusbar->keys = g_slist_prepend (statusbar->keys, string);
209 gtk_statusbar_push (GtkStatusbar *statusbar,
213 GtkStatusbarMsg *msg;
214 GtkStatusbarClass *class;
216 g_return_val_if_fail (statusbar != NULL, 0);
217 g_return_val_if_fail (GTK_IS_STATUSBAR (statusbar), 0);
218 g_return_val_if_fail (text != NULL, 0);
219 g_return_val_if_fail (context_id > 0, 0);
221 class = GTK_STATUSBAR_CLASS (GTK_OBJECT (statusbar)->klass);
222 msg = g_chunk_new (GtkStatusbarMsg, class->messages_mem_chunk);
223 msg->text = g_strdup (text);
224 msg->context_id = context_id;
225 msg->message_id = statusbar->seq_message_id++;
227 statusbar->messages = g_slist_prepend (statusbar->messages, msg);
229 gtk_signal_emit (GTK_OBJECT (statusbar),
230 statusbar_signals[SIGNAL_TEXT_PUSHED],
234 return msg->message_id;
238 gtk_statusbar_pop (GtkStatusbar *statusbar,
241 GtkStatusbarMsg *msg;
243 g_return_if_fail (statusbar != NULL);
244 g_return_if_fail (GTK_IS_STATUSBAR (statusbar));
245 g_return_if_fail (context_id > 0);
247 if (statusbar->messages)
251 for (list = statusbar->messages; list; list = list->next)
255 if (msg->context_id == context_id)
257 GtkStatusbarClass *class;
259 class = GTK_STATUSBAR_CLASS (GTK_OBJECT (statusbar)->klass);
261 statusbar->messages = g_slist_remove_link (statusbar->messages,
264 g_mem_chunk_free (class->messages_mem_chunk, msg);
265 g_slist_free_1 (list);
271 msg = statusbar->messages ? statusbar->messages->data : NULL;
273 gtk_signal_emit (GTK_OBJECT (statusbar),
274 statusbar_signals[SIGNAL_TEXT_POPPED],
275 (guint) (msg ? msg->context_id : 0),
276 msg ? msg->text : NULL);
280 gtk_statusbar_remove (GtkStatusbar *statusbar,
284 GtkStatusbarMsg *msg;
286 g_return_if_fail (statusbar != NULL);
287 g_return_if_fail (GTK_IS_STATUSBAR (statusbar));
288 g_return_if_fail (context_id > 0);
289 g_return_if_fail (message_id > 0);
291 msg = statusbar->messages ? statusbar->messages->data : NULL;
296 /* care about signal emission if the topmost item is removed */
297 if (msg->context_id == context_id &&
298 msg->message_id == message_id)
300 gtk_statusbar_pop (statusbar, context_id);
304 for (list = statusbar->messages; list; list = list->next)
308 if (msg->context_id == context_id &&
309 msg->message_id == message_id)
311 GtkStatusbarClass *class;
313 class = GTK_STATUSBAR_CLASS (GTK_OBJECT (statusbar)->klass);
314 statusbar->messages = g_slist_remove_link (statusbar->messages, list);
316 g_mem_chunk_free (class->messages_mem_chunk, msg);
317 g_slist_free_1 (list);
326 gtk_statusbar_destroy (GtkObject *object)
328 GtkStatusbar *statusbar;
329 GtkStatusbarClass *class;
332 g_return_if_fail (object != NULL);
333 g_return_if_fail (GTK_IS_STATUSBAR (object));
335 statusbar = GTK_STATUSBAR (object);
336 class = GTK_STATUSBAR_CLASS (GTK_OBJECT (statusbar)->klass);
338 for (list = statusbar->messages; list; list = list->next)
340 GtkStatusbarMsg *msg;
344 g_mem_chunk_free (class->messages_mem_chunk, msg);
346 g_slist_free (statusbar->messages);
347 statusbar->messages = NULL;
349 for (list = statusbar->keys; list; list = list->next)
351 g_slist_free (statusbar->keys);
352 statusbar->keys = NULL;
354 GTK_OBJECT_CLASS (parent_class)->destroy (object);
358 gtk_statusbar_finalize (GtkObject *object)
360 GtkStatusbar *statusbar;
362 g_return_if_fail (object != NULL);
363 g_return_if_fail (GTK_IS_STATUSBAR (object));
365 statusbar = GTK_STATUSBAR (object);
367 GTK_OBJECT_CLASS (parent_class)->finalize (object);