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 Free
17 * Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
22 #include "gtksignal.h"
23 #include "gtkstatusbar.h"
33 typedef void (*SignalTextP) (GtkObject *object,
38 static void gtk_statusbar_class_init (GtkStatusbarClass *class);
39 static void gtk_statusbar_init (GtkStatusbar *statusbar);
40 static void gtk_statusbar_destroy (GtkObject *object);
41 static void gtk_statusbar_finalize (GtkObject *object);
42 static void gtk_statusbar_update (GtkStatusbar *statusbar,
46 static GtkContainerClass *parent_class;
47 static guint statusbar_signals[SIGNAL_LAST] = { 0 };
50 gtk_statusbar_get_type ()
52 static guint statusbar_type = 0;
56 GtkTypeInfo statusbar_info =
59 sizeof (GtkStatusbar),
60 sizeof (GtkStatusbarClass),
61 (GtkClassInitFunc) gtk_statusbar_class_init,
62 (GtkObjectInitFunc) gtk_statusbar_init,
67 statusbar_type = gtk_type_unique (gtk_hbox_get_type (), &statusbar_info);
70 return statusbar_type;
74 gtk_statusbar_marshal_text_p (GtkObject *object,
79 SignalTextP sfunc = (SignalTextP) func;
82 GTK_VALUE_UINT (args[0]),
83 GTK_VALUE_STRING (args[1]),
88 gtk_statusbar_class_init (GtkStatusbarClass *class)
90 GtkObjectClass *object_class;
91 GtkWidgetClass *widget_class;
92 GtkContainerClass *container_class;
94 object_class = (GtkObjectClass *) class;
95 widget_class = (GtkWidgetClass *) class;
96 container_class = (GtkContainerClass *) class;
98 parent_class = gtk_type_class (gtk_hbox_get_type ());
100 statusbar_signals[SIGNAL_TEXT_PUSHED] =
101 gtk_signal_new ("text_pushed",
104 GTK_SIGNAL_OFFSET (GtkStatusbarClass, text_pushed),
105 gtk_statusbar_marshal_text_p,
109 statusbar_signals[SIGNAL_TEXT_POPPED] =
110 gtk_signal_new ("text_popped",
113 GTK_SIGNAL_OFFSET (GtkStatusbarClass, text_popped),
114 gtk_statusbar_marshal_text_p,
118 gtk_object_class_add_signals (object_class, statusbar_signals, SIGNAL_LAST);
120 object_class->destroy = gtk_statusbar_destroy;
121 object_class->finalize = gtk_statusbar_finalize;
123 class->messages_mem_chunk = g_mem_chunk_new ("GtkStatusBar messages mem chunk",
124 sizeof (GtkStatusbarMsg),
125 sizeof (GtkStatusbarMsg) * 64,
128 class->text_pushed = gtk_statusbar_update;
129 class->text_popped = gtk_statusbar_update;
133 gtk_statusbar_init (GtkStatusbar *statusbar)
137 box = GTK_BOX (statusbar);
140 box->homogeneous = FALSE;
142 statusbar->frame = gtk_frame_new (NULL);
143 gtk_frame_set_shadow_type (GTK_FRAME (statusbar->frame), GTK_SHADOW_IN);
144 gtk_box_pack_start (box, statusbar->frame, TRUE, TRUE, 0);
145 gtk_widget_show (statusbar->frame);
147 statusbar->label = gtk_label_new ("");
148 gtk_misc_set_alignment (GTK_MISC (statusbar->label), 0.0, 0.0);
149 gtk_container_add (GTK_CONTAINER (statusbar->frame), statusbar->label);
150 gtk_widget_show (statusbar->label);
152 statusbar->seq_context_id = 1;
153 statusbar->seq_message_id = 1;
154 statusbar->messages = NULL;
155 statusbar->keys = NULL;
161 return gtk_type_new (gtk_statusbar_get_type ());
165 gtk_statusbar_update (GtkStatusbar *statusbar,
169 g_return_if_fail (statusbar != NULL);
170 g_return_if_fail (GTK_IS_STATUSBAR (statusbar));
175 gtk_label_set (GTK_LABEL (statusbar->label), text);
179 gtk_statusbar_get_context_id (GtkStatusbar *statusbar,
180 const gchar *context_description)
185 g_return_val_if_fail (statusbar != NULL, 0);
186 g_return_val_if_fail (GTK_IS_STATUSBAR (statusbar), 0);
187 g_return_val_if_fail (context_description != NULL, 0);
189 /* we need to preserve namespaces on object datas */
190 string = g_strconcat ("gtk-status-bar-context:", context_description, NULL);
192 id = gtk_object_get_data (GTK_OBJECT (statusbar), string);
195 id = g_new (guint, 1);
196 *id = statusbar->seq_context_id++;
197 gtk_object_set_data_full (GTK_OBJECT (statusbar), string, id, (GtkDestroyNotify) g_free);
198 statusbar->keys = g_slist_prepend (statusbar->keys, string);
207 gtk_statusbar_push (GtkStatusbar *statusbar,
211 GtkStatusbarMsg *msg;
212 GtkStatusbarClass *class;
214 g_return_val_if_fail (statusbar != NULL, 0);
215 g_return_val_if_fail (GTK_IS_STATUSBAR (statusbar), 0);
216 g_return_val_if_fail (text != NULL, 0);
217 g_return_val_if_fail (context_id > 0, 0);
219 class = GTK_STATUSBAR_CLASS (GTK_OBJECT (statusbar)->klass);
220 msg = g_chunk_new (GtkStatusbarMsg, class->messages_mem_chunk);
221 msg->text = g_strdup (text);
222 msg->context_id = context_id;
223 msg->message_id = statusbar->seq_message_id++;
225 statusbar->messages = g_slist_prepend (statusbar->messages, msg);
227 gtk_signal_emit (GTK_OBJECT (statusbar),
228 statusbar_signals[SIGNAL_TEXT_PUSHED],
232 return msg->message_id;
236 gtk_statusbar_pop (GtkStatusbar *statusbar,
239 GtkStatusbarMsg *msg;
241 g_return_if_fail (statusbar != NULL);
242 g_return_if_fail (GTK_IS_STATUSBAR (statusbar));
243 g_return_if_fail (context_id > 0);
245 if (statusbar->messages)
249 for (list = statusbar->messages; list; list = list->next)
253 if (msg->context_id == context_id)
255 GtkStatusbarClass *class;
257 class = GTK_STATUSBAR_CLASS (GTK_OBJECT (statusbar)->klass);
259 statusbar->messages = g_slist_remove_link (statusbar->messages,
262 g_mem_chunk_free (class->messages_mem_chunk, msg);
263 g_slist_free_1 (list);
269 msg = statusbar->messages ? statusbar->messages->data : NULL;
271 gtk_signal_emit (GTK_OBJECT (statusbar),
272 statusbar_signals[SIGNAL_TEXT_POPPED],
273 (guint) (msg ? msg->context_id : 0),
274 msg ? msg->text : NULL);
278 gtk_statusbar_remove (GtkStatusbar *statusbar,
282 GtkStatusbarMsg *msg;
284 g_return_if_fail (statusbar != NULL);
285 g_return_if_fail (GTK_IS_STATUSBAR (statusbar));
286 g_return_if_fail (context_id > 0);
287 g_return_if_fail (message_id > 0);
289 msg = statusbar->messages ? statusbar->messages->data : NULL;
294 /* care about signal emission if the topmost item is removed */
295 if (msg->context_id == context_id &&
296 msg->message_id == message_id)
298 gtk_statusbar_pop (statusbar, context_id);
302 for (list = statusbar->messages; list; list = list->next)
306 if (msg->context_id == context_id &&
307 msg->message_id == message_id)
309 GtkStatusbarClass *class;
311 class = GTK_STATUSBAR_CLASS (GTK_OBJECT (statusbar)->klass);
312 statusbar->messages = g_slist_remove_link (statusbar->messages, list);
314 g_mem_chunk_free (class->messages_mem_chunk, msg);
315 g_slist_free_1 (list);
324 gtk_statusbar_destroy (GtkObject *object)
326 GtkStatusbar *statusbar;
327 GtkStatusbarClass *class;
330 g_return_if_fail (object != NULL);
331 g_return_if_fail (GTK_IS_STATUSBAR (object));
333 statusbar = GTK_STATUSBAR (object);
334 class = GTK_STATUSBAR_CLASS (GTK_OBJECT (statusbar)->klass);
336 for (list = statusbar->messages; list; list = list->next)
338 GtkStatusbarMsg *msg;
342 g_mem_chunk_free (class->messages_mem_chunk, msg);
344 g_slist_free (statusbar->messages);
345 statusbar->messages = NULL;
347 for (list = statusbar->keys; list; list = list->next)
349 g_slist_free (statusbar->keys);
350 statusbar->keys = NULL;
352 GTK_OBJECT_CLASS (parent_class)->destroy (object);
356 gtk_statusbar_finalize (GtkObject *object)
358 GtkStatusbar *statusbar;
360 g_return_if_fail (object != NULL);
361 g_return_if_fail (GTK_IS_STATUSBAR (object));
363 statusbar = GTK_STATUSBAR (object);
365 GTK_OBJECT_CLASS (parent_class)->finalize (object);