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.
25 #include "gtksignal.h"
26 #include "gtkaccellabel.h"
34 static void gtk_accel_label_class_init (GtkAccelLabelClass *klass);
35 static void gtk_accel_label_init (GtkAccelLabel *accel_label);
36 static void gtk_accel_label_set_arg (GtkObject *object,
39 static void gtk_accel_label_get_arg (GtkObject *object,
42 static void gtk_accel_label_destroy (GtkObject *object);
43 static void gtk_accel_label_finalize (GtkObject *object);
44 static void gtk_accel_label_size_request (GtkWidget *widget,
45 GtkRequisition *requisition);
46 static gint gtk_accel_label_expose_event (GtkWidget *widget,
47 GdkEventExpose *event);
49 static GtkAccelLabelClass *accel_label_class = NULL;
50 static GtkLabelClass *parent_class = NULL;
54 gtk_accel_label_get_type (void)
56 static GtkType accel_label_type = 0;
58 if (!accel_label_type)
60 GtkTypeInfo accel_label_info =
63 sizeof (GtkAccelLabel),
64 sizeof (GtkAccelLabelClass),
65 (GtkClassInitFunc) gtk_accel_label_class_init,
66 (GtkObjectInitFunc) gtk_accel_label_init,
67 /* reserved_1 */ NULL,
68 /* reserved_2 */ NULL,
69 (GtkClassInitFunc) NULL,
72 accel_label_type = gtk_type_unique (gtk_label_get_type (), &accel_label_info);
75 return accel_label_type;
79 gtk_accel_label_class_init (GtkAccelLabelClass *class)
81 GtkObjectClass *object_class;
82 GtkWidgetClass *widget_class;
83 GtkMiscClass *misc_class;
84 GtkLabelClass *label_class;
86 accel_label_class = class;
87 object_class = (GtkObjectClass*) class;
88 widget_class = (GtkWidgetClass*) class;
89 misc_class = (GtkMiscClass*) class;
90 label_class = (GtkLabelClass*) class;
92 parent_class = gtk_type_class (gtk_label_get_type ());
94 gtk_object_add_arg_type ("GtkAccelLabel::accel_widget", GTK_TYPE_WIDGET, GTK_ARG_READWRITE, ARG_ACCEL_WIDGET);
96 object_class->set_arg = gtk_accel_label_set_arg;
97 object_class->get_arg = gtk_accel_label_get_arg;
98 object_class->destroy = gtk_accel_label_destroy;
99 object_class->finalize = gtk_accel_label_finalize;
101 widget_class->size_request = gtk_accel_label_size_request;
102 widget_class->expose_event = gtk_accel_label_expose_event;
104 class->signal_quote1 = g_strdup ("<:");
105 class->signal_quote2 = g_strdup (":>");
106 class->mod_name_shift = g_strdup ("Shft");
107 class->mod_name_control = g_strdup ("Ctl");
108 class->mod_name_alt = g_strdup ("Alt");
109 class->mod_separator = g_strdup ("+");
110 class->accel_seperator = g_strdup (" / ");
111 class->latin1_to_char = TRUE;
115 gtk_accel_label_set_arg (GtkObject *object,
119 GtkAccelLabel *accel_label;
121 accel_label = GTK_ACCEL_LABEL (object);
125 case ARG_ACCEL_WIDGET:
126 gtk_accel_label_set_accel_widget (accel_label, (GtkWidget*) GTK_VALUE_OBJECT (*arg));
134 gtk_accel_label_get_arg (GtkObject *object,
138 GtkAccelLabel *accel_label;
140 accel_label = GTK_ACCEL_LABEL (object);
144 case ARG_ACCEL_WIDGET:
145 GTK_VALUE_OBJECT (*arg) = (GtkObject*) accel_label->accel_widget;
148 arg->type = GTK_TYPE_INVALID;
154 gtk_accel_label_init (GtkAccelLabel *accel_label)
156 accel_label->queue_id = 0;
157 accel_label->accel_padding = 3;
158 accel_label->accel_widget = NULL;
159 accel_label->accel_string = NULL;
161 gtk_accel_label_refetch (accel_label);
165 gtk_accel_label_new (const gchar *string)
167 GtkAccelLabel *accel_label;
169 g_return_val_if_fail (string != NULL, NULL);
171 accel_label = gtk_type_new (GTK_TYPE_ACCEL_LABEL);
173 gtk_label_set (GTK_LABEL (accel_label), string);
175 return GTK_WIDGET (accel_label);
179 gtk_accel_label_destroy (GtkObject *object)
181 GtkAccelLabel *accel_label;
183 g_return_if_fail (object != NULL);
184 g_return_if_fail (GTK_IS_ACCEL_LABEL (object));
186 accel_label = GTK_ACCEL_LABEL (object);
188 gtk_accel_label_set_accel_widget (accel_label, NULL);
190 GTK_OBJECT_CLASS (parent_class)->destroy (object);
194 gtk_accel_label_finalize (GtkObject *object)
196 GtkAccelLabel *accel_label;
198 g_return_if_fail (object != NULL);
199 g_return_if_fail (GTK_IS_ACCEL_LABEL (object));
201 accel_label = GTK_ACCEL_LABEL (object);
203 g_free (accel_label->accel_string);
205 GTK_OBJECT_CLASS (parent_class)->finalize (object);
209 gtk_accel_label_get_accel_width (GtkAccelLabel *accel_label)
211 g_return_val_if_fail (accel_label != NULL, 0);
212 g_return_val_if_fail (GTK_IS_ACCEL_LABEL (accel_label), 0);
214 return (accel_label->accel_string_width +
215 (accel_label->accel_string_width ? accel_label->accel_padding : 0));
219 gtk_accel_label_size_request (GtkWidget *widget,
220 GtkRequisition *requisition)
222 GtkAccelLabel *accel_label;
224 g_return_if_fail (widget != NULL);
225 g_return_if_fail (GTK_IS_ACCEL_LABEL (widget));
226 g_return_if_fail (requisition != NULL);
228 accel_label = GTK_ACCEL_LABEL (widget);
230 if (GTK_WIDGET_CLASS (parent_class)->size_request)
231 GTK_WIDGET_CLASS (parent_class)->size_request (widget, requisition);
233 accel_label->accel_string_width = gdk_string_width (GTK_WIDGET (accel_label)->style->font,
234 accel_label->accel_string);
238 gtk_accel_label_expose_event (GtkWidget *widget,
239 GdkEventExpose *event)
242 GtkAccelLabel *accel_label;
244 g_return_val_if_fail (widget != NULL, FALSE);
245 g_return_val_if_fail (GTK_IS_ACCEL_LABEL (widget), FALSE);
246 g_return_val_if_fail (event != NULL, FALSE);
248 accel_label = GTK_ACCEL_LABEL (widget);
249 misc = GTK_MISC (accel_label);
251 if (GTK_WIDGET_DRAWABLE (accel_label))
255 ac_width = gtk_accel_label_get_accel_width (accel_label);
257 if (widget->allocation.width >= widget->requisition.width + ac_width)
262 widget->allocation.width -= ac_width;
263 if (GTK_WIDGET_CLASS (parent_class)->expose_event)
264 GTK_WIDGET_CLASS (parent_class)->expose_event (widget, event);
265 widget->allocation.width += ac_width;
267 x = widget->allocation.x + widget->allocation.width - misc->xpad - ac_width;
269 y = (widget->allocation.y * (1.0 - misc->yalign) +
270 (widget->allocation.y + widget->allocation.height -
271 (widget->requisition.height - misc->ypad * 2)) *
272 misc->yalign + widget->style->font->ascent) + 1.5;
274 if (GTK_WIDGET_STATE (accel_label) == GTK_STATE_INSENSITIVE)
275 gdk_draw_string (widget->window,
277 widget->style->white_gc,
280 accel_label->accel_string);
282 gdk_draw_string (widget->window,
284 widget->style->fg_gc[GTK_WIDGET_STATE (accel_label)],
287 accel_label->accel_string);
291 if (GTK_WIDGET_CLASS (parent_class)->expose_event)
292 GTK_WIDGET_CLASS (parent_class)->expose_event (widget, event);
300 gtk_accel_label_queue_refetch (GtkAccelLabel *accel_label)
302 g_return_if_fail (accel_label != NULL);
303 g_return_if_fail (GTK_IS_ACCEL_LABEL (accel_label));
305 if (accel_label->queue_id == 0)
306 accel_label->queue_id = gtk_idle_add_priority (GTK_PRIORITY_HIGH - 2,
307 (GtkFunction) gtk_accel_label_refetch,
312 gtk_accel_label_set_accel_widget (GtkAccelLabel *accel_label,
313 GtkWidget *accel_widget)
315 g_return_if_fail (accel_label != NULL);
316 g_return_if_fail (GTK_IS_ACCEL_LABEL (accel_label));
317 if (accel_widget != NULL)
318 g_return_if_fail (GTK_IS_WIDGET (accel_widget));
320 if (accel_widget != accel_label->accel_widget)
322 if (accel_label->accel_widget)
324 gtk_signal_disconnect_by_func (GTK_OBJECT (accel_label->accel_widget),
325 GTK_SIGNAL_FUNC (gtk_accel_label_queue_refetch),
327 gtk_widget_unref (accel_label->accel_widget);
329 if (accel_label->queue_id)
331 gtk_idle_remove (accel_label->queue_id);
332 accel_label->queue_id = 0;
334 accel_label->accel_widget = accel_widget;
335 if (accel_label->accel_widget)
337 gtk_widget_ref (accel_label->accel_widget);
338 gtk_signal_connect_object_after (GTK_OBJECT (accel_label->accel_widget),
340 GTK_SIGNAL_FUNC (gtk_accel_label_queue_refetch),
341 GTK_OBJECT (accel_label));
342 gtk_signal_connect_object_after (GTK_OBJECT (accel_label->accel_widget),
343 "remove-accelerator",
344 GTK_SIGNAL_FUNC (gtk_accel_label_queue_refetch),
345 GTK_OBJECT (accel_label));
351 gtk_accel_label_refetch (GtkAccelLabel *accel_label)
353 GtkAccelLabelClass *class;
355 g_return_val_if_fail (accel_label != NULL, FALSE);
356 g_return_val_if_fail (GTK_IS_ACCEL_LABEL (accel_label), FALSE);
358 class = GTK_ACCEL_LABEL_CLASS (GTK_OBJECT (accel_label)->klass);
360 g_free (accel_label->accel_string);
361 accel_label->accel_string = NULL;
363 if (accel_label->accel_widget)
365 GtkAccelEntry *entry = NULL;
368 slist = gtk_accel_group_entries_from_object (GTK_OBJECT (accel_label->accel_widget));
369 for (; slist; slist = slist->next)
372 if (entry->accel_flags & GTK_ACCEL_VISIBLE)
377 gstring = g_string_new (accel_label->accel_string);
379 g_string_append (gstring, class->accel_seperator);
381 g_string_append (gstring, " ");
383 if (entry->accel_flags & GTK_ACCEL_SIGNAL_VISIBLE)
385 g_string_append (gstring, class->signal_quote1);
386 g_string_append (gstring, gtk_signal_name (entry->signal_id));
387 g_string_append (gstring, class->signal_quote2);
391 if (entry->accelerator_mods & GDK_SHIFT_MASK)
393 g_string_append (gstring, class->mod_name_shift);
396 if (entry->accelerator_mods & GDK_CONTROL_MASK)
399 g_string_append (gstring, class->mod_separator);
400 g_string_append (gstring, class->mod_name_control);
403 if (entry->accelerator_mods & GDK_MOD1_MASK)
406 g_string_append (gstring, class->mod_separator);
407 g_string_append (gstring, class->mod_name_alt);
412 g_string_append (gstring, class->mod_separator);
413 if (entry->accelerator_key < 0x80 ||
414 (entry->accelerator_key > 0x80 &&
415 entry->accelerator_key <= 0xff &&
416 class->latin1_to_char))
418 switch (entry->accelerator_key)
421 g_string_append (gstring, "Space");
424 g_string_append (gstring, "Backslash");
427 g_string_append_c (gstring, toupper (entry->accelerator_key));
435 tmp = gtk_accelerator_name (entry->accelerator_key, 0);
436 if (tmp[0] != 0 && tmp[1] == 0)
437 tmp[0] = toupper (tmp[0]);
438 g_string_append (gstring, tmp);
442 g_free (accel_label->accel_string);
443 accel_label->accel_string = gstring->str;
444 g_string_free (gstring, FALSE);
449 if (!accel_label->accel_string)
450 accel_label->accel_string = g_strdup ("");
452 if (accel_label->queue_id)
454 gtk_idle_remove (accel_label->queue_id);
455 accel_label->queue_id = 0;
458 gtk_widget_queue_resize (GTK_WIDGET (accel_label));