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 1997-2001. 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_property (GObject *object,
48 static void gtk_accel_label_get_property (GObject *object,
52 static void gtk_accel_label_destroy (GtkObject *object);
53 static void gtk_accel_label_finalize (GObject *object);
54 static void gtk_accel_label_size_request (GtkWidget *widget,
55 GtkRequisition *requisition);
56 static gboolean gtk_accel_label_expose_event (GtkWidget *widget,
57 GdkEventExpose *event);
58 static gboolean gtk_accel_label_refetch_idle (GtkAccelLabel *accel_label);
60 static GtkAccelLabelClass *accel_label_class = NULL;
61 static GtkLabelClass *parent_class = NULL;
65 gtk_accel_label_get_type (void)
67 static GtkType accel_label_type = 0;
69 if (!accel_label_type)
71 static const GtkTypeInfo accel_label_info =
74 sizeof (GtkAccelLabel),
75 sizeof (GtkAccelLabelClass),
76 (GtkClassInitFunc) gtk_accel_label_class_init,
77 (GtkObjectInitFunc) gtk_accel_label_init,
78 /* reserved_1 */ NULL,
79 /* reserved_2 */ NULL,
80 (GtkClassInitFunc) NULL,
83 accel_label_type = gtk_type_unique (GTK_TYPE_LABEL, &accel_label_info);
86 return accel_label_type;
90 gtk_accel_label_class_init (GtkAccelLabelClass *class)
92 GObjectClass *gobject_class = G_OBJECT_CLASS (class);
93 GtkObjectClass *object_class;
94 GtkWidgetClass *widget_class;
95 GtkMiscClass *misc_class;
96 GtkLabelClass *label_class;
98 accel_label_class = class;
99 object_class = (GtkObjectClass*) class;
100 widget_class = (GtkWidgetClass*) class;
101 misc_class = (GtkMiscClass*) class;
102 label_class = (GtkLabelClass*) class;
104 parent_class = gtk_type_class (GTK_TYPE_LABEL);
106 gobject_class->finalize = gtk_accel_label_finalize;
107 gobject_class->set_property = gtk_accel_label_set_property;
108 gobject_class->get_property = gtk_accel_label_get_property;
110 object_class->destroy = gtk_accel_label_destroy;
112 g_object_class_install_property (G_OBJECT_CLASS(object_class),
114 g_param_spec_object ("accel_widget",
115 _("Accelerator widget"),
116 _("The widget monitored by this accelerator label"),
118 G_PARAM_READABLE | G_PARAM_WRITABLE));
121 widget_class->size_request = gtk_accel_label_size_request;
122 widget_class->expose_event = gtk_accel_label_expose_event;
124 class->signal_quote1 = g_strdup ("<:");
125 class->signal_quote2 = g_strdup (":>");
126 class->mod_name_shift = g_strdup ("Shft");
127 class->mod_name_control = g_strdup ("Ctl");
128 class->mod_name_alt = g_strdup ("Alt");
129 class->mod_separator = g_strdup ("+");
130 class->accel_seperator = g_strdup (" / ");
131 class->latin1_to_char = TRUE;
135 gtk_accel_label_set_property (GObject *object,
140 GtkAccelLabel *accel_label;
142 accel_label = GTK_ACCEL_LABEL (object);
146 case PROP_ACCEL_WIDGET:
147 gtk_accel_label_set_accel_widget (accel_label, (GtkWidget*) g_value_get_object (value));
150 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
155 static void gtk_accel_label_get_property (GObject *object,
160 GtkAccelLabel *accel_label;
162 accel_label = GTK_ACCEL_LABEL (object);
166 case PROP_ACCEL_WIDGET:
167 g_value_set_object (value, G_OBJECT (accel_label->accel_widget));
170 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
176 gtk_accel_label_init (GtkAccelLabel *accel_label)
178 accel_label->queue_id = 0;
179 accel_label->accel_padding = 3;
180 accel_label->accel_widget = NULL;
181 accel_label->accel_string = NULL;
183 gtk_accel_label_refetch (accel_label);
187 gtk_accel_label_new (const gchar *string)
189 GtkAccelLabel *accel_label;
191 g_return_val_if_fail (string != NULL, NULL);
193 accel_label = gtk_type_new (GTK_TYPE_ACCEL_LABEL);
195 gtk_label_set_text (GTK_LABEL (accel_label), string);
197 return GTK_WIDGET (accel_label);
201 gtk_accel_label_destroy (GtkObject *object)
203 GtkAccelLabel *accel_label;
205 g_return_if_fail (GTK_IS_ACCEL_LABEL (object));
207 accel_label = GTK_ACCEL_LABEL (object);
209 gtk_accel_label_set_accel_widget (accel_label, NULL);
211 GTK_OBJECT_CLASS (parent_class)->destroy (object);
215 gtk_accel_label_finalize (GObject *object)
217 GtkAccelLabel *accel_label;
219 g_return_if_fail (GTK_IS_ACCEL_LABEL (object));
221 accel_label = GTK_ACCEL_LABEL (object);
223 g_free (accel_label->accel_string);
225 G_OBJECT_CLASS (parent_class)->finalize (object);
229 * gtk_accel_label_get_accel_widget:
230 * @accel_label: a #GtkAccelLabel
232 * Fetches the widget monitored by this accelerator label. See
233 * gtk_accel_label_set_accel_widget().
235 * Return value: the widget monitored by the accelerator label,
239 gtk_accel_label_get_accel_widget (GtkAccelLabel *accel_label)
241 g_return_val_if_fail (GTK_IS_ACCEL_LABEL (accel_label), NULL);
243 return accel_label->accel_widget;
247 gtk_accel_label_get_accel_width (GtkAccelLabel *accel_label)
249 g_return_val_if_fail (GTK_IS_ACCEL_LABEL (accel_label), 0);
251 return (accel_label->accel_string_width +
252 (accel_label->accel_string_width ? accel_label->accel_padding : 0));
256 gtk_accel_label_size_request (GtkWidget *widget,
257 GtkRequisition *requisition)
259 GtkAccelLabel *accel_label;
263 g_return_if_fail (GTK_IS_ACCEL_LABEL (widget));
264 g_return_if_fail (requisition != NULL);
266 accel_label = GTK_ACCEL_LABEL (widget);
268 if (GTK_WIDGET_CLASS (parent_class)->size_request)
269 GTK_WIDGET_CLASS (parent_class)->size_request (widget, requisition);
271 layout = gtk_widget_create_pango_layout (widget, accel_label->accel_string);
272 pango_layout_get_pixel_size (layout, &width, NULL);
273 accel_label->accel_string_width = width;
275 g_object_unref (G_OBJECT (layout));
279 gtk_accel_label_expose_event (GtkWidget *widget,
280 GdkEventExpose *event)
283 GtkAccelLabel *accel_label;
286 g_return_val_if_fail (GTK_IS_ACCEL_LABEL (widget), FALSE);
287 g_return_val_if_fail (event != NULL, FALSE);
289 accel_label = GTK_ACCEL_LABEL (widget);
290 misc = GTK_MISC (accel_label);
292 if (GTK_WIDGET_DRAWABLE (accel_label))
296 ac_width = gtk_accel_label_get_accel_width (accel_label);
298 if (widget->allocation.width >= widget->requisition.width + ac_width)
303 widget->allocation.width -= ac_width;
304 if (GTK_WIDGET_CLASS (parent_class)->expose_event)
305 GTK_WIDGET_CLASS (parent_class)->expose_event (widget, event);
306 widget->allocation.width += ac_width;
308 x = widget->allocation.x + widget->allocation.width - misc->xpad - ac_width;
310 y = (widget->allocation.y * (1.0 - misc->yalign) +
311 (widget->allocation.y + widget->allocation.height -
312 (widget->requisition.height - misc->ypad * 2)) *
315 layout = gtk_widget_create_pango_layout (widget, accel_label->accel_string);
317 gtk_paint_layout (widget->style,
319 GTK_WIDGET_STATE (widget),
327 g_object_unref (G_OBJECT (layout));
331 if (GTK_WIDGET_CLASS (parent_class)->expose_event)
332 GTK_WIDGET_CLASS (parent_class)->expose_event (widget, event);
340 gtk_accel_label_queue_refetch (GtkAccelLabel *accel_label)
342 g_return_if_fail (GTK_IS_ACCEL_LABEL (accel_label));
344 if (accel_label->queue_id == 0)
345 accel_label->queue_id = gtk_idle_add_priority (G_PRIORITY_HIGH_IDLE,
346 (GtkFunction) gtk_accel_label_refetch_idle,
351 gtk_accel_label_set_accel_widget (GtkAccelLabel *accel_label,
352 GtkWidget *accel_widget)
354 g_return_if_fail (GTK_IS_ACCEL_LABEL (accel_label));
355 if (accel_widget != NULL)
356 g_return_if_fail (GTK_IS_WIDGET (accel_widget));
358 if (accel_widget != accel_label->accel_widget)
360 if (accel_label->accel_widget)
362 gtk_signal_disconnect_by_func (GTK_OBJECT (accel_label->accel_widget),
363 GTK_SIGNAL_FUNC (gtk_accel_label_queue_refetch),
365 gtk_widget_unref (accel_label->accel_widget);
367 if (accel_label->queue_id)
369 gtk_idle_remove (accel_label->queue_id);
370 accel_label->queue_id = 0;
372 accel_label->accel_widget = accel_widget;
373 if (accel_label->accel_widget)
375 gtk_widget_ref (accel_label->accel_widget);
376 gtk_signal_connect_object_after (GTK_OBJECT (accel_label->accel_widget),
378 GTK_SIGNAL_FUNC (gtk_accel_label_queue_refetch),
379 GTK_OBJECT (accel_label));
380 gtk_signal_connect_object_after (GTK_OBJECT (accel_label->accel_widget),
381 "remove-accelerator",
382 GTK_SIGNAL_FUNC (gtk_accel_label_queue_refetch),
383 GTK_OBJECT (accel_label));
385 g_object_notify (G_OBJECT (accel_label), "accel_widget");
390 gtk_accel_label_refetch_idle (GtkAccelLabel *accel_label)
394 GDK_THREADS_ENTER ();
395 retval = gtk_accel_label_refetch (accel_label);
396 GDK_THREADS_LEAVE ();
402 gtk_accel_label_refetch (GtkAccelLabel *accel_label)
404 GtkAccelLabelClass *class;
406 g_return_val_if_fail (GTK_IS_ACCEL_LABEL (accel_label), FALSE);
408 class = GTK_ACCEL_LABEL_GET_CLASS (accel_label);
410 g_free (accel_label->accel_string);
411 accel_label->accel_string = NULL;
413 if (accel_label->accel_widget)
415 GtkAccelEntry *entry = NULL;
418 slist = gtk_accel_group_entries_from_object (GTK_OBJECT (accel_label->accel_widget));
419 for (; slist; slist = slist->next)
422 if (entry->accel_flags & GTK_ACCEL_VISIBLE)
427 gstring = g_string_new (accel_label->accel_string);
429 g_string_append (gstring, class->accel_seperator);
431 g_string_append (gstring, " ");
433 if (entry->accel_flags & GTK_ACCEL_SIGNAL_VISIBLE)
435 g_string_append (gstring, class->signal_quote1);
436 g_string_append (gstring, gtk_signal_name (entry->signal_id));
437 g_string_append (gstring, class->signal_quote2);
441 if (entry->accelerator_mods & GDK_SHIFT_MASK)
443 g_string_append (gstring, class->mod_name_shift);
446 if (entry->accelerator_mods & GDK_CONTROL_MASK)
449 g_string_append (gstring, class->mod_separator);
450 g_string_append (gstring, class->mod_name_control);
453 if (entry->accelerator_mods & GDK_MOD1_MASK)
456 g_string_append (gstring, class->mod_separator);
457 g_string_append (gstring, class->mod_name_alt);
462 g_string_append (gstring, class->mod_separator);
463 if (entry->accelerator_key < 0x80 ||
464 (entry->accelerator_key > 0x80 &&
465 entry->accelerator_key <= 0xff &&
466 class->latin1_to_char))
468 switch (entry->accelerator_key)
471 g_string_append (gstring, "Space");
474 g_string_append (gstring, "Backslash");
477 g_string_append_c (gstring, toupper (entry->accelerator_key));
485 tmp = gtk_accelerator_name (entry->accelerator_key, 0);
486 if (tmp[0] != 0 && tmp[1] == 0)
487 tmp[0] = toupper (tmp[0]);
488 g_string_append (gstring, tmp);
492 g_free (accel_label->accel_string);
493 accel_label->accel_string = gstring->str;
494 g_string_free (gstring, FALSE);
499 if (!accel_label->accel_string)
500 accel_label->accel_string = g_strdup ("");
502 if (accel_label->queue_id)
504 gtk_idle_remove (accel_label->queue_id);
505 accel_label->queue_id = 0;
508 gtk_widget_queue_resize (GTK_WIDGET (accel_label));