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 (GtkAccelLabel *accel_label,
39 static void gtk_accel_label_get_arg (GtkAccelLabel *accel_label,
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 (GtkArgSetFunc) gtk_accel_label_set_arg,
68 (GtkArgGetFunc) gtk_accel_label_get_arg,
71 accel_label_type = gtk_type_unique (gtk_label_get_type (), &accel_label_info);
74 return accel_label_type;
78 gtk_accel_label_class_init (GtkAccelLabelClass *class)
80 GtkObjectClass *object_class;
81 GtkWidgetClass *widget_class;
82 GtkMiscClass *misc_class;
83 GtkLabelClass *label_class;
85 accel_label_class = class;
86 object_class = (GtkObjectClass*) class;
87 widget_class = (GtkWidgetClass*) class;
88 misc_class = (GtkMiscClass*) class;
89 label_class = (GtkLabelClass*) class;
91 parent_class = gtk_type_class (gtk_label_get_type ());
93 gtk_object_add_arg_type ("GtkAccelLabel::accel_widget", GTK_TYPE_WIDGET, GTK_ARG_READWRITE, ARG_ACCEL_WIDGET);
95 object_class->destroy = gtk_accel_label_destroy;
96 object_class->finalize = gtk_accel_label_finalize;
98 widget_class->size_request = gtk_accel_label_size_request;
99 widget_class->expose_event = gtk_accel_label_expose_event;
101 class->signal_quote1 = g_strdup ("<:");
102 class->signal_quote2 = g_strdup (":>");
103 class->mod_name_shift = g_strdup ("Shft");
104 class->mod_name_control = g_strdup ("Ctl");
105 class->mod_name_alt = g_strdup ("Alt");
106 class->mod_separator = g_strdup ("+");
107 class->accel_seperator = g_strdup (" / ");
108 class->latin1_to_char = TRUE;
112 gtk_accel_label_set_arg (GtkAccelLabel *accel_label,
118 case ARG_ACCEL_WIDGET:
119 gtk_accel_label_set_accel_widget (accel_label, (GtkWidget*) GTK_VALUE_OBJECT (*arg));
127 gtk_accel_label_get_arg (GtkAccelLabel *accel_label,
133 case ARG_ACCEL_WIDGET:
134 GTK_VALUE_OBJECT (*arg) = (GtkObject*) accel_label->accel_widget;
137 arg->type = GTK_TYPE_INVALID;
143 gtk_accel_label_init (GtkAccelLabel *accel_label)
145 accel_label->queue_id = 0;
146 accel_label->accel_padding = 3;
147 accel_label->accel_widget = NULL;
148 accel_label->accel_string = NULL;
150 gtk_accel_label_refetch (accel_label);
154 gtk_accel_label_new (const gchar *string)
156 GtkAccelLabel *accel_label;
158 g_return_val_if_fail (string != NULL, NULL);
160 accel_label = gtk_type_new (GTK_TYPE_ACCEL_LABEL);
162 gtk_label_set (GTK_LABEL (accel_label), string);
164 return GTK_WIDGET (accel_label);
168 gtk_accel_label_destroy (GtkObject *object)
170 GtkAccelLabel *accel_label;
172 g_return_if_fail (object != NULL);
173 g_return_if_fail (GTK_IS_ACCEL_LABEL (object));
175 accel_label = GTK_ACCEL_LABEL (object);
177 gtk_accel_label_set_accel_widget (accel_label, NULL);
179 GTK_OBJECT_CLASS (parent_class)->destroy (object);
183 gtk_accel_label_finalize (GtkObject *object)
185 GtkAccelLabel *accel_label;
187 g_return_if_fail (object != NULL);
188 g_return_if_fail (GTK_IS_ACCEL_LABEL (object));
190 accel_label = GTK_ACCEL_LABEL (object);
192 g_free (accel_label->accel_string);
194 GTK_OBJECT_CLASS (parent_class)->finalize (object);
198 gtk_accel_label_accelerator_width (GtkAccelLabel *accel_label)
200 g_return_val_if_fail (accel_label != NULL, 0);
201 g_return_val_if_fail (GTK_IS_ACCEL_LABEL (accel_label), 0);
203 return accel_label->accel_padding + accel_label->accel_string_width;
207 gtk_accel_label_size_request (GtkWidget *widget,
208 GtkRequisition *requisition)
210 GtkAccelLabel *accel_label;
212 g_return_if_fail (widget != NULL);
213 g_return_if_fail (GTK_IS_ACCEL_LABEL (widget));
214 g_return_if_fail (requisition != NULL);
216 accel_label = GTK_ACCEL_LABEL (widget);
218 if (GTK_WIDGET_CLASS (parent_class)->size_request)
219 GTK_WIDGET_CLASS (parent_class)->size_request (widget, requisition);
221 accel_label->accel_string_width = gdk_string_width (GTK_WIDGET (accel_label)->style->font,
222 accel_label->accel_string);
226 gtk_accel_label_expose_event (GtkWidget *widget,
227 GdkEventExpose *event)
230 GtkAccelLabel *accel_label;
232 g_return_val_if_fail (widget != NULL, FALSE);
233 g_return_val_if_fail (GTK_IS_ACCEL_LABEL (widget), FALSE);
234 g_return_val_if_fail (event != NULL, FALSE);
236 accel_label = GTK_ACCEL_LABEL (widget);
237 misc = GTK_MISC (accel_label);
239 if (GTK_WIDGET_DRAWABLE (accel_label))
243 ac_width = gtk_accel_label_accelerator_width (accel_label);
245 if (widget->allocation.width >= widget->requisition.width + ac_width)
250 widget->allocation.width -= ac_width;
251 if (GTK_WIDGET_CLASS (parent_class)->expose_event)
252 GTK_WIDGET_CLASS (parent_class)->expose_event (widget, event);
253 widget->allocation.width += ac_width;
255 x = widget->allocation.x + widget->allocation.width - misc->xpad - ac_width;
257 y = (widget->allocation.y * (1.0 - misc->yalign) +
258 (widget->allocation.y + widget->allocation.height -
259 (widget->requisition.height - misc->ypad * 2)) *
260 misc->yalign + widget->style->font->ascent) + 1.5;
262 if (GTK_WIDGET_STATE (accel_label) == GTK_STATE_INSENSITIVE)
263 gdk_draw_string (widget->window,
265 widget->style->white_gc,
268 accel_label->accel_string);
270 gdk_draw_string (widget->window,
272 widget->style->fg_gc[GTK_WIDGET_STATE (accel_label)],
275 accel_label->accel_string);
279 if (GTK_WIDGET_CLASS (parent_class)->expose_event)
280 GTK_WIDGET_CLASS (parent_class)->expose_event (widget, event);
288 gtk_accel_label_queue_refetch (GtkAccelLabel *accel_label)
290 g_return_if_fail (accel_label != NULL);
291 g_return_if_fail (GTK_IS_ACCEL_LABEL (accel_label));
293 if (accel_label->queue_id == 0)
294 accel_label->queue_id = gtk_idle_add_priority (GTK_PRIORITY_HIGH - 2,
295 (GtkFunction) gtk_accel_label_refetch,
300 gtk_accel_label_set_accel_widget (GtkAccelLabel *accel_label,
301 GtkWidget *accel_widget)
303 g_return_if_fail (accel_label != NULL);
304 g_return_if_fail (GTK_IS_ACCEL_LABEL (accel_label));
305 if (accel_widget != NULL)
306 g_return_if_fail (GTK_IS_WIDGET (accel_widget));
308 if (accel_widget != accel_label->accel_widget)
310 if (accel_label->accel_widget)
312 gtk_signal_disconnect_by_func (GTK_OBJECT (accel_label->accel_widget),
313 GTK_SIGNAL_FUNC (gtk_accel_label_queue_refetch),
315 gtk_widget_unref (accel_label->accel_widget);
317 if (accel_label->queue_id)
319 gtk_idle_remove (accel_label->queue_id);
320 accel_label->queue_id = 0;
322 accel_label->accel_widget = accel_widget;
323 if (accel_label->accel_widget)
325 gtk_widget_ref (accel_label->accel_widget);
326 gtk_signal_connect_object_after (GTK_OBJECT (accel_label->accel_widget),
328 GTK_SIGNAL_FUNC (gtk_accel_label_queue_refetch),
329 GTK_OBJECT (accel_label));
330 gtk_signal_connect_object_after (GTK_OBJECT (accel_label->accel_widget),
331 "remove-accelerator",
332 GTK_SIGNAL_FUNC (gtk_accel_label_queue_refetch),
333 GTK_OBJECT (accel_label));
339 gtk_accel_label_refetch (GtkAccelLabel *accel_label)
341 GtkAccelLabelClass *class;
343 g_return_val_if_fail (accel_label != NULL, FALSE);
344 g_return_val_if_fail (GTK_IS_ACCEL_LABEL (accel_label), FALSE);
346 class = GTK_ACCEL_LABEL_CLASS (GTK_OBJECT (accel_label)->klass);
348 g_free (accel_label->accel_string);
349 accel_label->accel_string = NULL;
351 if (accel_label->accel_widget)
353 GtkAccelEntry *entry = NULL;
356 slist = gtk_accel_group_entries_from_object (GTK_OBJECT (accel_label->accel_widget));
357 for (; slist; slist = slist->next)
360 if (entry->accel_flags & GTK_ACCEL_VISIBLE)
365 gstring = g_string_new (accel_label->accel_string);
367 g_string_append (gstring, class->accel_seperator);
369 g_string_append (gstring, " ");
371 if (entry->accel_flags & GTK_ACCEL_SIGNAL_VISIBLE)
373 g_string_append (gstring, class->signal_quote1);
374 g_string_append (gstring, gtk_signal_name (entry->signal_id));
375 g_string_append (gstring, class->signal_quote2);
379 if (entry->accelerator_mods & GDK_SHIFT_MASK)
381 g_string_append (gstring, class->mod_name_shift);
384 if (entry->accelerator_mods & GDK_CONTROL_MASK)
387 g_string_append (gstring, class->mod_separator);
388 g_string_append (gstring, class->mod_name_control);
391 if (entry->accelerator_mods & GDK_MOD1_MASK)
394 g_string_append (gstring, class->mod_separator);
395 g_string_append (gstring, class->mod_name_alt);
400 g_string_append (gstring, class->mod_separator);
401 if (entry->accelerator_key < 0x80 ||
402 (entry->accelerator_key > 0x80 &&
403 entry->accelerator_key <= 0xff &&
404 class->latin1_to_char))
406 switch (entry->accelerator_key)
409 g_string_append (gstring, "Space");
412 g_string_append (gstring, "Backslash");
415 g_string_append_c (gstring, toupper (entry->accelerator_key));
423 tmp = gtk_accelerator_name (entry->accelerator_key, 0);
424 if (tmp[0] != 0 && tmp[1] == 0)
425 tmp[0] = toupper (tmp[0]);
426 g_string_append (gstring, tmp);
430 g_free (accel_label->accel_string);
431 accel_label->accel_string = gstring->str;
432 g_string_free (gstring, FALSE);
437 if (!accel_label->accel_string)
438 accel_label->accel_string = g_strdup ("");
440 if (accel_label->queue_id)
442 gtk_idle_remove (accel_label->queue_id);
443 accel_label->queue_id = 0;
446 gtk_widget_queue_resize (GTK_WIDGET (accel_label));