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,
54 radio_button_type = gtk_type_unique (gtk_check_button_get_type (), &radio_button_info);
57 return radio_button_type;
61 gtk_radio_button_class_init (GtkRadioButtonClass *class)
63 GtkObjectClass *object_class;
64 GtkButtonClass *button_class;
65 GtkCheckButtonClass *check_button_class;
67 object_class = (GtkObjectClass*) class;
68 button_class = (GtkButtonClass*) class;
69 check_button_class = (GtkCheckButtonClass*) class;
71 parent_class = gtk_type_class (gtk_check_button_get_type ());
73 object_class->destroy = gtk_radio_button_destroy;
75 button_class->clicked = gtk_radio_button_clicked;
77 check_button_class->draw_indicator = gtk_radio_button_draw_indicator;
81 gtk_radio_button_init (GtkRadioButton *radio_button)
83 radio_button->group = NULL;
87 gtk_radio_button_new (GSList *group)
89 GtkRadioButton *radio_button;
90 GtkRadioButton *tmp_button;
93 radio_button = gtk_type_new (gtk_radio_button_get_type ());
96 radio_button->group = g_slist_prepend (group, radio_button);
102 tmp_button = tmp_list->data;
103 tmp_list = tmp_list->next;
105 tmp_button->group = radio_button->group;
110 GTK_TOGGLE_BUTTON (radio_button)->active = TRUE;
111 gtk_widget_set_state (GTK_WIDGET (radio_button), GTK_STATE_ACTIVE);
114 return GTK_WIDGET (radio_button);
118 gtk_radio_button_new_with_label (GSList *group,
121 GtkWidget *radio_button;
122 GtkWidget *label_widget;
124 radio_button = gtk_radio_button_new (group);
125 label_widget = gtk_label_new (label);
126 gtk_misc_set_alignment (GTK_MISC (label_widget), 0.0, 0.5);
128 gtk_container_add (GTK_CONTAINER (radio_button), label_widget);
129 gtk_widget_show (label_widget);
135 gtk_radio_button_new_from_widget (GtkRadioButton *group)
139 l = gtk_radio_button_group (group);
140 return gtk_radio_button_new (l);
145 gtk_radio_button_new_with_label_from_widget (GtkRadioButton *group,
150 l = gtk_radio_button_group (group);
151 return gtk_radio_button_new_with_label (l, label);
155 gtk_radio_button_group (GtkRadioButton *radio_button)
157 g_return_val_if_fail (radio_button != NULL, NULL);
158 g_return_val_if_fail (GTK_IS_RADIO_BUTTON (radio_button), NULL);
160 return radio_button->group;
165 gtk_radio_button_destroy (GtkObject *object)
167 GtkRadioButton *radio_button;
168 GtkRadioButton *tmp_button;
171 g_return_if_fail (object != NULL);
172 g_return_if_fail (GTK_IS_RADIO_BUTTON (object));
174 radio_button = GTK_RADIO_BUTTON (object);
176 radio_button->group = g_slist_remove (radio_button->group, radio_button);
177 tmp_list = radio_button->group;
181 tmp_button = tmp_list->data;
182 tmp_list = tmp_list->next;
184 tmp_button->group = radio_button->group;
187 if (GTK_OBJECT_CLASS (parent_class)->destroy)
188 (* GTK_OBJECT_CLASS (parent_class)->destroy) (object);
192 gtk_radio_button_clicked (GtkButton *button)
194 GtkToggleButton *toggle_button;
195 GtkRadioButton *radio_button;
196 GtkToggleButton *tmp_button;
197 GtkStateType new_state;
201 g_return_if_fail (button != NULL);
202 g_return_if_fail (GTK_IS_RADIO_BUTTON (button));
204 radio_button = GTK_RADIO_BUTTON (button);
205 toggle_button = GTK_TOGGLE_BUTTON (button);
208 if (toggle_button->active)
211 tmp_list = radio_button->group;
215 tmp_button = tmp_list->data;
216 tmp_list = tmp_list->next;
218 if (tmp_button->active && (tmp_button != toggle_button))
226 new_state = (button->in_button ? GTK_STATE_PRELIGHT : GTK_STATE_ACTIVE);
231 toggle_button->active = !toggle_button->active;
232 new_state = (button->in_button ? GTK_STATE_PRELIGHT : GTK_STATE_NORMAL);
238 toggle_button->active = !toggle_button->active;
240 tmp_list = radio_button->group;
243 tmp_button = tmp_list->data;
244 tmp_list = tmp_list->next;
246 if (tmp_button->active && (tmp_button != toggle_button))
248 gtk_button_clicked (GTK_BUTTON (tmp_button));
253 new_state = (button->in_button ? GTK_STATE_PRELIGHT : GTK_STATE_ACTIVE);
256 if (GTK_WIDGET_STATE (button) != new_state)
257 gtk_widget_set_state (GTK_WIDGET (button), new_state);
259 gtk_toggle_button_toggled (toggle_button);
260 gtk_widget_queue_draw (GTK_WIDGET (button));
264 gtk_radio_button_draw_indicator (GtkCheckButton *check_button,
269 GtkToggleButton *toggle_button;
270 GtkStateType state_type;
271 GtkShadowType shadow_type;
276 g_return_if_fail (check_button != NULL);
277 g_return_if_fail (GTK_IS_RADIO_BUTTON (check_button));
279 if (GTK_WIDGET_VISIBLE (check_button) && GTK_WIDGET_MAPPED (check_button))
281 widget = GTK_WIDGET (check_button);
282 button = GTK_BUTTON (check_button);
283 toggle_button = GTK_TOGGLE_BUTTON (check_button);
285 state_type = GTK_WIDGET_STATE (widget);
286 if ((state_type != GTK_STATE_NORMAL) &&
287 (state_type != GTK_STATE_PRELIGHT))
288 state_type = GTK_STATE_NORMAL;
290 gtk_style_set_background (widget->style, widget->window, state_type);
291 gdk_window_clear_area (widget->window, area->x, area->y, area->width, area->height);
293 x = CHECK_BUTTON_CLASS (widget)->indicator_spacing + GTK_CONTAINER (widget)->border_width;
294 y = (widget->allocation.height - CHECK_BUTTON_CLASS (widget)->indicator_size) / 2;
295 width = CHECK_BUTTON_CLASS (widget)->indicator_size;
296 height = CHECK_BUTTON_CLASS (widget)->indicator_size;
298 if (GTK_WIDGET_STATE (widget) == GTK_STATE_ACTIVE)
299 shadow_type = GTK_SHADOW_IN;
300 else if ((GTK_WIDGET_STATE (widget) == GTK_STATE_PRELIGHT) && toggle_button->active)
301 shadow_type = GTK_SHADOW_IN;
303 shadow_type = GTK_SHADOW_OUT;
305 pts[0].x = x + width / 2;
307 pts[1].x = x + width;
308 pts[1].y = y + height / 2;
310 pts[2].y = y + height;
314 gdk_draw_polygon (widget->window,
315 widget->style->bg_gc[GTK_WIDGET_STATE (widget)],
317 gtk_draw_diamond (widget->style, widget->window,
318 GTK_WIDGET_STATE (widget), shadow_type,
319 x, y, width, height);