1 /* GTK - The GIMP Toolkit
2 * Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
4 * GtkAccelLabel: GtkLabel with accelerator monitoring facilities.
5 * Copyright (C) 1998 Tim Janik
7 * This library is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; either
10 * version 2 of the License, or (at your option) any later version.
12 * This library is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
17 * You should have received a copy of the GNU Lesser General Public
18 * License along with this library; if not, write to the
19 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
20 * Boston, MA 02111-1307, USA.
24 * Modified by the GTK+ Team and others 1997-2000. See the AUTHORS
25 * file for a list of people on the GTK+ Team. See the ChangeLog
26 * files for a list of changes. These files are distributed with
27 * GTK+ at ftp://ftp.gtk.org/pub/gtk/.
33 #include "gtksignal.h"
34 #include "gtkaccellabel.h"
42 static void gtk_accel_label_class_init (GtkAccelLabelClass *klass);
43 static void gtk_accel_label_init (GtkAccelLabel *accel_label);
44 static void gtk_accel_label_set_arg (GtkObject *object,
47 static void gtk_accel_label_get_arg (GtkObject *object,
50 static void gtk_accel_label_destroy (GtkObject *object);
51 static void gtk_accel_label_finalize (GObject *object);
52 static void gtk_accel_label_size_request (GtkWidget *widget,
53 GtkRequisition *requisition);
54 static gboolean gtk_accel_label_expose_event (GtkWidget *widget,
55 GdkEventExpose *event);
56 static gboolean gtk_accel_label_refetch_idle (GtkAccelLabel *accel_label);
58 static GtkAccelLabelClass *accel_label_class = NULL;
59 static GtkLabelClass *parent_class = NULL;
63 gtk_accel_label_get_type (void)
65 static GtkType accel_label_type = 0;
67 if (!accel_label_type)
69 static const GtkTypeInfo accel_label_info =
72 sizeof (GtkAccelLabel),
73 sizeof (GtkAccelLabelClass),
74 (GtkClassInitFunc) gtk_accel_label_class_init,
75 (GtkObjectInitFunc) gtk_accel_label_init,
76 /* reserved_1 */ NULL,
77 /* reserved_2 */ NULL,
78 (GtkClassInitFunc) NULL,
81 accel_label_type = gtk_type_unique (GTK_TYPE_LABEL, &accel_label_info);
84 return accel_label_type;
88 gtk_accel_label_class_init (GtkAccelLabelClass *class)
90 GObjectClass *gobject_class = G_OBJECT_CLASS (class);
91 GtkObjectClass *object_class;
92 GtkWidgetClass *widget_class;
93 GtkMiscClass *misc_class;
94 GtkLabelClass *label_class;
96 accel_label_class = class;
97 object_class = (GtkObjectClass*) class;
98 widget_class = (GtkWidgetClass*) class;
99 misc_class = (GtkMiscClass*) class;
100 label_class = (GtkLabelClass*) class;
102 parent_class = gtk_type_class (GTK_TYPE_LABEL);
104 gtk_object_add_arg_type ("GtkAccelLabel::accel_widget", GTK_TYPE_WIDGET, GTK_ARG_READWRITE, ARG_ACCEL_WIDGET);
106 gobject_class->finalize = gtk_accel_label_finalize;
108 object_class->set_arg = gtk_accel_label_set_arg;
109 object_class->get_arg = gtk_accel_label_get_arg;
110 object_class->destroy = gtk_accel_label_destroy;
112 widget_class->size_request = gtk_accel_label_size_request;
113 widget_class->expose_event = gtk_accel_label_expose_event;
115 class->signal_quote1 = g_strdup ("<:");
116 class->signal_quote2 = g_strdup (":>");
117 class->mod_name_shift = g_strdup ("Shft");
118 class->mod_name_control = g_strdup ("Ctl");
119 class->mod_name_alt = g_strdup ("Alt");
120 class->mod_separator = g_strdup ("+");
121 class->accel_seperator = g_strdup (" / ");
122 class->latin1_to_char = TRUE;
126 gtk_accel_label_set_arg (GtkObject *object,
130 GtkAccelLabel *accel_label;
132 accel_label = GTK_ACCEL_LABEL (object);
136 case ARG_ACCEL_WIDGET:
137 gtk_accel_label_set_accel_widget (accel_label, (GtkWidget*) GTK_VALUE_OBJECT (*arg));
145 gtk_accel_label_get_arg (GtkObject *object,
149 GtkAccelLabel *accel_label;
151 accel_label = GTK_ACCEL_LABEL (object);
155 case ARG_ACCEL_WIDGET:
156 GTK_VALUE_OBJECT (*arg) = (GtkObject*) accel_label->accel_widget;
159 arg->type = GTK_TYPE_INVALID;
165 gtk_accel_label_init (GtkAccelLabel *accel_label)
167 accel_label->queue_id = 0;
168 accel_label->accel_padding = 3;
169 accel_label->accel_widget = NULL;
170 accel_label->accel_string = NULL;
172 gtk_accel_label_refetch (accel_label);
176 gtk_accel_label_new (const gchar *string)
178 GtkAccelLabel *accel_label;
180 g_return_val_if_fail (string != NULL, NULL);
182 accel_label = gtk_type_new (GTK_TYPE_ACCEL_LABEL);
184 gtk_label_set_text (GTK_LABEL (accel_label), string);
186 return GTK_WIDGET (accel_label);
190 gtk_accel_label_destroy (GtkObject *object)
192 GtkAccelLabel *accel_label;
194 g_return_if_fail (object != NULL);
195 g_return_if_fail (GTK_IS_ACCEL_LABEL (object));
197 accel_label = GTK_ACCEL_LABEL (object);
199 gtk_accel_label_set_accel_widget (accel_label, NULL);
201 GTK_OBJECT_CLASS (parent_class)->destroy (object);
205 gtk_accel_label_finalize (GObject *object)
207 GtkAccelLabel *accel_label;
209 g_return_if_fail (GTK_IS_ACCEL_LABEL (object));
211 accel_label = GTK_ACCEL_LABEL (object);
213 g_free (accel_label->accel_string);
215 G_OBJECT_CLASS (parent_class)->finalize (object);
219 gtk_accel_label_get_accel_width (GtkAccelLabel *accel_label)
221 g_return_val_if_fail (accel_label != NULL, 0);
222 g_return_val_if_fail (GTK_IS_ACCEL_LABEL (accel_label), 0);
224 return (accel_label->accel_string_width +
225 (accel_label->accel_string_width ? accel_label->accel_padding : 0));
229 gtk_accel_label_size_request (GtkWidget *widget,
230 GtkRequisition *requisition)
232 GtkAccelLabel *accel_label;
236 g_return_if_fail (widget != NULL);
237 g_return_if_fail (GTK_IS_ACCEL_LABEL (widget));
238 g_return_if_fail (requisition != NULL);
240 accel_label = GTK_ACCEL_LABEL (widget);
242 if (GTK_WIDGET_CLASS (parent_class)->size_request)
243 GTK_WIDGET_CLASS (parent_class)->size_request (widget, requisition);
245 layout = gtk_widget_create_pango_layout (widget, accel_label->accel_string);
246 pango_layout_get_pixel_size (layout, &width, NULL);
247 accel_label->accel_string_width = width;
249 g_object_unref (G_OBJECT (layout));
253 gtk_accel_label_expose_event (GtkWidget *widget,
254 GdkEventExpose *event)
257 GtkAccelLabel *accel_label;
260 g_return_val_if_fail (widget != NULL, FALSE);
261 g_return_val_if_fail (GTK_IS_ACCEL_LABEL (widget), FALSE);
262 g_return_val_if_fail (event != NULL, FALSE);
264 accel_label = GTK_ACCEL_LABEL (widget);
265 misc = GTK_MISC (accel_label);
267 if (GTK_WIDGET_DRAWABLE (accel_label))
271 ac_width = gtk_accel_label_get_accel_width (accel_label);
273 if (widget->allocation.width >= widget->requisition.width + ac_width)
278 widget->allocation.width -= ac_width;
279 if (GTK_WIDGET_CLASS (parent_class)->expose_event)
280 GTK_WIDGET_CLASS (parent_class)->expose_event (widget, event);
281 widget->allocation.width += ac_width;
283 x = widget->allocation.x + widget->allocation.width - misc->xpad - ac_width;
285 y = (widget->allocation.y * (1.0 - misc->yalign) +
286 (widget->allocation.y + widget->allocation.height -
287 (widget->requisition.height - misc->ypad * 2)) *
290 layout = gtk_widget_create_pango_layout (widget, accel_label->accel_string);
292 gtk_paint_layout (widget->style,
294 GTK_WIDGET_STATE (widget),
302 g_object_unref (G_OBJECT (layout));
306 if (GTK_WIDGET_CLASS (parent_class)->expose_event)
307 GTK_WIDGET_CLASS (parent_class)->expose_event (widget, event);
315 gtk_accel_label_queue_refetch (GtkAccelLabel *accel_label)
317 g_return_if_fail (accel_label != NULL);
318 g_return_if_fail (GTK_IS_ACCEL_LABEL (accel_label));
320 if (accel_label->queue_id == 0)
321 accel_label->queue_id = gtk_idle_add_priority (G_PRIORITY_HIGH_IDLE,
322 (GtkFunction) gtk_accel_label_refetch_idle,
327 gtk_accel_label_set_accel_widget (GtkAccelLabel *accel_label,
328 GtkWidget *accel_widget)
330 g_return_if_fail (accel_label != NULL);
331 g_return_if_fail (GTK_IS_ACCEL_LABEL (accel_label));
332 if (accel_widget != NULL)
333 g_return_if_fail (GTK_IS_WIDGET (accel_widget));
335 if (accel_widget != accel_label->accel_widget)
337 if (accel_label->accel_widget)
339 gtk_signal_disconnect_by_func (GTK_OBJECT (accel_label->accel_widget),
340 GTK_SIGNAL_FUNC (gtk_accel_label_queue_refetch),
342 gtk_widget_unref (accel_label->accel_widget);
344 if (accel_label->queue_id)
346 gtk_idle_remove (accel_label->queue_id);
347 accel_label->queue_id = 0;
349 accel_label->accel_widget = accel_widget;
350 if (accel_label->accel_widget)
352 gtk_widget_ref (accel_label->accel_widget);
353 gtk_signal_connect_object_after (GTK_OBJECT (accel_label->accel_widget),
355 GTK_SIGNAL_FUNC (gtk_accel_label_queue_refetch),
356 GTK_OBJECT (accel_label));
357 gtk_signal_connect_object_after (GTK_OBJECT (accel_label->accel_widget),
358 "remove-accelerator",
359 GTK_SIGNAL_FUNC (gtk_accel_label_queue_refetch),
360 GTK_OBJECT (accel_label));
366 gtk_accel_label_refetch_idle (GtkAccelLabel *accel_label)
370 GDK_THREADS_ENTER ();
371 retval = gtk_accel_label_refetch (accel_label);
372 GDK_THREADS_LEAVE ();
378 gtk_accel_label_refetch (GtkAccelLabel *accel_label)
380 GtkAccelLabelClass *class;
382 g_return_val_if_fail (accel_label != NULL, FALSE);
383 g_return_val_if_fail (GTK_IS_ACCEL_LABEL (accel_label), FALSE);
385 class = GTK_ACCEL_LABEL_GET_CLASS (accel_label);
387 g_free (accel_label->accel_string);
388 accel_label->accel_string = NULL;
390 if (accel_label->accel_widget)
392 GtkAccelEntry *entry = NULL;
395 slist = gtk_accel_group_entries_from_object (GTK_OBJECT (accel_label->accel_widget));
396 for (; slist; slist = slist->next)
399 if (entry->accel_flags & GTK_ACCEL_VISIBLE)
404 gstring = g_string_new (accel_label->accel_string);
406 g_string_append (gstring, class->accel_seperator);
408 g_string_append (gstring, " ");
410 if (entry->accel_flags & GTK_ACCEL_SIGNAL_VISIBLE)
412 g_string_append (gstring, class->signal_quote1);
413 g_string_append (gstring, gtk_signal_name (entry->signal_id));
414 g_string_append (gstring, class->signal_quote2);
418 if (entry->accelerator_mods & GDK_SHIFT_MASK)
420 g_string_append (gstring, class->mod_name_shift);
423 if (entry->accelerator_mods & GDK_CONTROL_MASK)
426 g_string_append (gstring, class->mod_separator);
427 g_string_append (gstring, class->mod_name_control);
430 if (entry->accelerator_mods & GDK_MOD1_MASK)
433 g_string_append (gstring, class->mod_separator);
434 g_string_append (gstring, class->mod_name_alt);
439 g_string_append (gstring, class->mod_separator);
440 if (entry->accelerator_key < 0x80 ||
441 (entry->accelerator_key > 0x80 &&
442 entry->accelerator_key <= 0xff &&
443 class->latin1_to_char))
445 switch (entry->accelerator_key)
448 g_string_append (gstring, "Space");
451 g_string_append (gstring, "Backslash");
454 g_string_append_c (gstring, toupper (entry->accelerator_key));
462 tmp = gtk_accelerator_name (entry->accelerator_key, 0);
463 if (tmp[0] != 0 && tmp[1] == 0)
464 tmp[0] = toupper (tmp[0]);
465 g_string_append (gstring, tmp);
469 g_free (accel_label->accel_string);
470 accel_label->accel_string = gstring->str;
471 g_string_free (gstring, FALSE);
476 if (!accel_label->accel_string)
477 accel_label->accel_string = g_strdup ("");
479 if (accel_label->queue_id)
481 gtk_idle_remove (accel_label->queue_id);
482 accel_label->queue_id = 0;
485 gtk_widget_queue_resize (GTK_WIDGET (accel_label));