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 Library 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 * Library General Public License for more details.
17 * You should have received a copy of the GNU Library 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 1997-1999. 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 gint 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;
234 PangoRectangle logical_rect;
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);
246 pango_layout_set_text (layout, accel_label->accel_string, -1);
247 pango_layout_get_extents (layout, NULL, &logical_rect);
249 accel_label->accel_string_width = logical_rect.width / PANGO_SCALE;
250 pango_layout_unref (layout);
254 gtk_accel_label_expose_event (GtkWidget *widget,
255 GdkEventExpose *event)
258 GtkAccelLabel *accel_label;
261 g_return_val_if_fail (widget != NULL, FALSE);
262 g_return_val_if_fail (GTK_IS_ACCEL_LABEL (widget), FALSE);
263 g_return_val_if_fail (event != NULL, FALSE);
265 accel_label = GTK_ACCEL_LABEL (widget);
266 misc = GTK_MISC (accel_label);
268 if (GTK_WIDGET_DRAWABLE (accel_label))
272 ac_width = gtk_accel_label_get_accel_width (accel_label);
274 if (widget->allocation.width >= widget->requisition.width + ac_width)
279 widget->allocation.width -= ac_width;
280 if (GTK_WIDGET_CLASS (parent_class)->expose_event)
281 GTK_WIDGET_CLASS (parent_class)->expose_event (widget, event);
282 widget->allocation.width += ac_width;
284 x = widget->allocation.x + widget->allocation.width - misc->xpad - ac_width;
286 y = (widget->allocation.y * (1.0 - misc->yalign) +
287 (widget->allocation.y + widget->allocation.height -
288 (widget->requisition.height - misc->ypad * 2)) *
291 layout = gtk_widget_create_pango_layout (widget);
292 pango_layout_set_text (layout, accel_label->accel_string, -1);
294 if (GTK_WIDGET_STATE (accel_label) == GTK_STATE_INSENSITIVE)
295 gdk_draw_layout (widget->window,
296 widget->style->white_gc,
301 gdk_draw_layout (widget->window,
302 widget->style->fg_gc[GTK_WIDGET_STATE (accel_label)],
307 pango_layout_unref (layout);
311 if (GTK_WIDGET_CLASS (parent_class)->expose_event)
312 GTK_WIDGET_CLASS (parent_class)->expose_event (widget, event);
320 gtk_accel_label_queue_refetch (GtkAccelLabel *accel_label)
322 g_return_if_fail (accel_label != NULL);
323 g_return_if_fail (GTK_IS_ACCEL_LABEL (accel_label));
325 if (accel_label->queue_id == 0)
326 accel_label->queue_id = gtk_idle_add_priority (G_PRIORITY_HIGH_IDLE,
327 (GtkFunction) gtk_accel_label_refetch_idle,
332 gtk_accel_label_set_accel_widget (GtkAccelLabel *accel_label,
333 GtkWidget *accel_widget)
335 g_return_if_fail (accel_label != NULL);
336 g_return_if_fail (GTK_IS_ACCEL_LABEL (accel_label));
337 if (accel_widget != NULL)
338 g_return_if_fail (GTK_IS_WIDGET (accel_widget));
340 if (accel_widget != accel_label->accel_widget)
342 if (accel_label->accel_widget)
344 gtk_signal_disconnect_by_func (GTK_OBJECT (accel_label->accel_widget),
345 GTK_SIGNAL_FUNC (gtk_accel_label_queue_refetch),
347 gtk_widget_unref (accel_label->accel_widget);
349 if (accel_label->queue_id)
351 gtk_idle_remove (accel_label->queue_id);
352 accel_label->queue_id = 0;
354 accel_label->accel_widget = accel_widget;
355 if (accel_label->accel_widget)
357 gtk_widget_ref (accel_label->accel_widget);
358 gtk_signal_connect_object_after (GTK_OBJECT (accel_label->accel_widget),
360 GTK_SIGNAL_FUNC (gtk_accel_label_queue_refetch),
361 GTK_OBJECT (accel_label));
362 gtk_signal_connect_object_after (GTK_OBJECT (accel_label->accel_widget),
363 "remove-accelerator",
364 GTK_SIGNAL_FUNC (gtk_accel_label_queue_refetch),
365 GTK_OBJECT (accel_label));
371 gtk_accel_label_refetch_idle (GtkAccelLabel *accel_label)
375 GDK_THREADS_ENTER ();
376 retval = gtk_accel_label_refetch (accel_label);
377 GDK_THREADS_LEAVE ();
383 gtk_accel_label_refetch (GtkAccelLabel *accel_label)
385 GtkAccelLabelClass *class;
387 g_return_val_if_fail (accel_label != NULL, FALSE);
388 g_return_val_if_fail (GTK_IS_ACCEL_LABEL (accel_label), FALSE);
390 class = GTK_ACCEL_LABEL_GET_CLASS (accel_label);
392 g_free (accel_label->accel_string);
393 accel_label->accel_string = NULL;
395 if (accel_label->accel_widget)
397 GtkAccelEntry *entry = NULL;
400 slist = gtk_accel_group_entries_from_object (GTK_OBJECT (accel_label->accel_widget));
401 for (; slist; slist = slist->next)
404 if (entry->accel_flags & GTK_ACCEL_VISIBLE)
409 gstring = g_string_new (accel_label->accel_string);
411 g_string_append (gstring, class->accel_seperator);
413 g_string_append (gstring, " ");
415 if (entry->accel_flags & GTK_ACCEL_SIGNAL_VISIBLE)
417 g_string_append (gstring, class->signal_quote1);
418 g_string_append (gstring, gtk_signal_name (entry->signal_id));
419 g_string_append (gstring, class->signal_quote2);
423 if (entry->accelerator_mods & GDK_SHIFT_MASK)
425 g_string_append (gstring, class->mod_name_shift);
428 if (entry->accelerator_mods & GDK_CONTROL_MASK)
431 g_string_append (gstring, class->mod_separator);
432 g_string_append (gstring, class->mod_name_control);
435 if (entry->accelerator_mods & GDK_MOD1_MASK)
438 g_string_append (gstring, class->mod_separator);
439 g_string_append (gstring, class->mod_name_alt);
444 g_string_append (gstring, class->mod_separator);
445 if (entry->accelerator_key < 0x80 ||
446 (entry->accelerator_key > 0x80 &&
447 entry->accelerator_key <= 0xff &&
448 class->latin1_to_char))
450 switch (entry->accelerator_key)
453 g_string_append (gstring, "Space");
456 g_string_append (gstring, "Backslash");
459 g_string_append_c (gstring, toupper (entry->accelerator_key));
467 tmp = gtk_accelerator_name (entry->accelerator_key, 0);
468 if (tmp[0] != 0 && tmp[1] == 0)
469 tmp[0] = toupper (tmp[0]);
470 g_string_append (gstring, tmp);
474 g_free (accel_label->accel_string);
475 accel_label->accel_string = gstring->str;
476 g_string_free (gstring, FALSE);
481 if (!accel_label->accel_string)
482 accel_label->accel_string = g_strdup ("");
484 if (accel_label->queue_id)
486 gtk_idle_remove (accel_label->queue_id);
487 accel_label->queue_id = 0;
490 gtk_widget_queue_resize (GTK_WIDGET (accel_label));