1 /* GTK - The GIMP Toolkit
2 * Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
4 * This library is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU Library General Public
6 * License as published by the Free Software Foundation; either
7 * version 2 of the License, or (at your option) any later version.
9 * This library is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * Library General Public License for more details.
14 * You should have received a copy of the GNU Library General Public
15 * License along with this library; if not, write to the Free
16 * Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
19 #include "gtkradiobutton.h"
20 #include "gtksignal.h"
23 #define CHECK_BUTTON_CLASS(w) GTK_CHECK_BUTTON_CLASS (GTK_OBJECT (w)->klass)
26 static void gtk_radio_button_class_init (GtkRadioButtonClass *klass);
27 static void gtk_radio_button_init (GtkRadioButton *radio_button);
28 static void gtk_radio_button_destroy (GtkObject *object);
29 static void gtk_radio_button_clicked (GtkButton *button);
30 static void gtk_radio_button_draw_indicator (GtkCheckButton *check_button,
34 static GtkCheckButtonClass *parent_class = NULL;
38 gtk_radio_button_get_type ()
40 static guint radio_button_type = 0;
42 if (!radio_button_type)
44 GtkTypeInfo radio_button_info =
47 sizeof (GtkRadioButton),
48 sizeof (GtkRadioButtonClass),
49 (GtkClassInitFunc) gtk_radio_button_class_init,
50 (GtkObjectInitFunc) gtk_radio_button_init,
55 radio_button_type = gtk_type_unique (gtk_check_button_get_type (), &radio_button_info);
58 return radio_button_type;
62 gtk_radio_button_class_init (GtkRadioButtonClass *class)
64 GtkObjectClass *object_class;
65 GtkButtonClass *button_class;
66 GtkCheckButtonClass *check_button_class;
68 object_class = (GtkObjectClass*) class;
69 button_class = (GtkButtonClass*) class;
70 check_button_class = (GtkCheckButtonClass*) class;
72 parent_class = gtk_type_class (gtk_check_button_get_type ());
74 object_class->destroy = gtk_radio_button_destroy;
76 button_class->clicked = gtk_radio_button_clicked;
78 check_button_class->draw_indicator = gtk_radio_button_draw_indicator;
82 gtk_radio_button_init (GtkRadioButton *radio_button)
84 radio_button->group = NULL;
88 gtk_radio_button_new (GSList *group)
90 GtkRadioButton *radio_button;
91 GtkRadioButton *tmp_button;
94 radio_button = gtk_type_new (gtk_radio_button_get_type ());
97 radio_button->group = g_slist_prepend (group, radio_button);
103 tmp_button = tmp_list->data;
104 tmp_list = tmp_list->next;
106 tmp_button->group = radio_button->group;
111 GTK_TOGGLE_BUTTON (radio_button)->active = TRUE;
112 gtk_widget_set_state (GTK_WIDGET (radio_button), GTK_STATE_ACTIVE);
115 return GTK_WIDGET (radio_button);
119 gtk_radio_button_new_with_label (GSList *group,
122 GtkWidget *radio_button;
123 GtkWidget *label_widget;
125 radio_button = gtk_radio_button_new (group);
126 label_widget = gtk_label_new (label);
127 gtk_misc_set_alignment (GTK_MISC (label_widget), 0.0, 0.5);
129 gtk_container_add (GTK_CONTAINER (radio_button), label_widget);
130 gtk_widget_show (label_widget);
136 gtk_radio_button_new_from_widget (GtkRadioButton *group)
140 l = gtk_radio_button_group (group);
141 return gtk_radio_button_new (l);
146 gtk_radio_button_new_with_label_from_widget (GtkRadioButton *group,
151 l = gtk_radio_button_group (group);
152 return gtk_radio_button_new_with_label (l, label);
156 gtk_radio_button_group (GtkRadioButton *radio_button)
158 g_return_val_if_fail (radio_button != NULL, NULL);
159 g_return_val_if_fail (GTK_IS_RADIO_BUTTON (radio_button), NULL);
161 return radio_button->group;
166 gtk_radio_button_destroy (GtkObject *object)
168 GtkRadioButton *radio_button;
169 GtkRadioButton *tmp_button;
172 g_return_if_fail (object != NULL);
173 g_return_if_fail (GTK_IS_RADIO_BUTTON (object));
175 radio_button = GTK_RADIO_BUTTON (object);
177 radio_button->group = g_slist_remove (radio_button->group, radio_button);
178 tmp_list = radio_button->group;
182 tmp_button = tmp_list->data;
183 tmp_list = tmp_list->next;
185 tmp_button->group = radio_button->group;
188 if (GTK_OBJECT_CLASS (parent_class)->destroy)
189 (* GTK_OBJECT_CLASS (parent_class)->destroy) (object);
193 gtk_radio_button_clicked (GtkButton *button)
195 GtkToggleButton *toggle_button;
196 GtkRadioButton *radio_button;
197 GtkToggleButton *tmp_button;
198 GtkStateType new_state;
202 g_return_if_fail (button != NULL);
203 g_return_if_fail (GTK_IS_RADIO_BUTTON (button));
205 radio_button = GTK_RADIO_BUTTON (button);
206 toggle_button = GTK_TOGGLE_BUTTON (button);
209 if (toggle_button->active)
212 tmp_list = radio_button->group;
216 tmp_button = tmp_list->data;
217 tmp_list = tmp_list->next;
219 if (tmp_button->active && (tmp_button != toggle_button))
227 new_state = (button->in_button ? GTK_STATE_PRELIGHT : GTK_STATE_ACTIVE);
232 toggle_button->active = !toggle_button->active;
233 new_state = (button->in_button ? GTK_STATE_PRELIGHT : GTK_STATE_NORMAL);
239 toggle_button->active = !toggle_button->active;
241 tmp_list = radio_button->group;
244 tmp_button = tmp_list->data;
245 tmp_list = tmp_list->next;
247 if (tmp_button->active && (tmp_button != toggle_button))
249 gtk_button_clicked (GTK_BUTTON (tmp_button));
254 new_state = (button->in_button ? GTK_STATE_PRELIGHT : GTK_STATE_ACTIVE);
257 if (GTK_WIDGET_STATE (button) != new_state)
258 gtk_widget_set_state (GTK_WIDGET (button), new_state);
260 gtk_toggle_button_toggled (toggle_button);
261 gtk_widget_queue_draw (GTK_WIDGET (button));
265 gtk_radio_button_draw_indicator (GtkCheckButton *check_button,
270 GtkToggleButton *toggle_button;
271 GtkStateType state_type;
272 GtkShadowType shadow_type;
277 g_return_if_fail (check_button != NULL);
278 g_return_if_fail (GTK_IS_RADIO_BUTTON (check_button));
280 if (GTK_WIDGET_VISIBLE (check_button) && GTK_WIDGET_MAPPED (check_button))
282 widget = GTK_WIDGET (check_button);
283 button = GTK_BUTTON (check_button);
284 toggle_button = GTK_TOGGLE_BUTTON (check_button);
286 state_type = GTK_WIDGET_STATE (widget);
287 if ((state_type != GTK_STATE_NORMAL) &&
288 (state_type != GTK_STATE_PRELIGHT))
289 state_type = GTK_STATE_NORMAL;
291 gtk_style_set_background (widget->style, widget->window, state_type);
292 gdk_window_clear_area (widget->window, area->x, area->y, area->width, area->height);
294 x = CHECK_BUTTON_CLASS (widget)->indicator_spacing + GTK_CONTAINER (widget)->border_width;
295 y = (widget->allocation.height - CHECK_BUTTON_CLASS (widget)->indicator_size) / 2;
296 width = CHECK_BUTTON_CLASS (widget)->indicator_size;
297 height = CHECK_BUTTON_CLASS (widget)->indicator_size;
299 if (GTK_WIDGET_STATE (widget) == GTK_STATE_ACTIVE)
300 shadow_type = GTK_SHADOW_IN;
301 else if ((GTK_WIDGET_STATE (widget) == GTK_STATE_PRELIGHT) && toggle_button->active)
302 shadow_type = GTK_SHADOW_IN;
304 shadow_type = GTK_SHADOW_OUT;
306 pts[0].x = x + width / 2;
308 pts[1].x = x + width;
309 pts[1].y = y + height / 2;
311 pts[2].y = y + height;
315 gdk_draw_polygon (widget->window,
316 widget->style->bg_gc[GTK_WIDGET_STATE (widget)],
318 gtk_draw_diamond (widget->style, widget->window,
319 GTK_WIDGET_STATE (widget), shadow_type,
320 x, y, width, height);