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_set_group (GtkRadioButton *radio_button,
92 GtkRadioButton *tmp_button;
94 if (radio_button->group)
96 radio_button->group = g_slist_remove (radio_button->group, radio_button);
98 tmp_list = radio_button->group;
101 tmp_button = tmp_list->data;
102 tmp_list = tmp_list->next;
104 tmp_button->group = radio_button->group;
108 radio_button->group = g_slist_prepend (group, radio_button);
115 tmp_button = tmp_list->data;
116 tmp_list = tmp_list->next;
118 tmp_button->group = radio_button->group;
123 GTK_TOGGLE_BUTTON (radio_button)->active = TRUE;
124 gtk_widget_set_state (GTK_WIDGET (radio_button), GTK_STATE_ACTIVE);
129 gtk_radio_button_new (GSList *group)
131 GtkRadioButton *radio_button;
133 radio_button = gtk_type_new (gtk_radio_button_get_type ());
135 gtk_radio_button_set_group (radio_button, group);
137 return GTK_WIDGET (radio_button);
141 gtk_radio_button_new_with_label (GSList *group,
144 GtkWidget *radio_button;
145 GtkWidget *label_widget;
147 radio_button = gtk_radio_button_new (group);
148 label_widget = gtk_label_new (label);
149 gtk_misc_set_alignment (GTK_MISC (label_widget), 0.0, 0.5);
151 gtk_container_add (GTK_CONTAINER (radio_button), label_widget);
152 gtk_widget_show (label_widget);
158 gtk_radio_button_new_from_widget (GtkRadioButton *group)
162 l = gtk_radio_button_group (group);
163 return gtk_radio_button_new (l);
168 gtk_radio_button_new_with_label_from_widget (GtkRadioButton *group,
173 l = gtk_radio_button_group (group);
174 return gtk_radio_button_new_with_label (l, label);
178 gtk_radio_button_group (GtkRadioButton *radio_button)
180 g_return_val_if_fail (radio_button != NULL, NULL);
181 g_return_val_if_fail (GTK_IS_RADIO_BUTTON (radio_button), NULL);
183 return radio_button->group;
188 gtk_radio_button_destroy (GtkObject *object)
190 GtkRadioButton *radio_button;
191 GtkRadioButton *tmp_button;
194 g_return_if_fail (object != NULL);
195 g_return_if_fail (GTK_IS_RADIO_BUTTON (object));
197 radio_button = GTK_RADIO_BUTTON (object);
199 radio_button->group = g_slist_remove (radio_button->group, radio_button);
200 tmp_list = radio_button->group;
204 tmp_button = tmp_list->data;
205 tmp_list = tmp_list->next;
207 tmp_button->group = radio_button->group;
210 if (GTK_OBJECT_CLASS (parent_class)->destroy)
211 (* GTK_OBJECT_CLASS (parent_class)->destroy) (object);
215 gtk_radio_button_clicked (GtkButton *button)
217 GtkToggleButton *toggle_button;
218 GtkRadioButton *radio_button;
219 GtkToggleButton *tmp_button;
220 GtkStateType new_state;
224 g_return_if_fail (button != NULL);
225 g_return_if_fail (GTK_IS_RADIO_BUTTON (button));
227 radio_button = GTK_RADIO_BUTTON (button);
228 toggle_button = GTK_TOGGLE_BUTTON (button);
231 if (toggle_button->active)
234 tmp_list = radio_button->group;
238 tmp_button = tmp_list->data;
239 tmp_list = tmp_list->next;
241 if (tmp_button->active && (tmp_button != toggle_button))
249 new_state = (button->in_button ? GTK_STATE_PRELIGHT : GTK_STATE_ACTIVE);
254 toggle_button->active = !toggle_button->active;
255 new_state = (button->in_button ? GTK_STATE_PRELIGHT : GTK_STATE_NORMAL);
261 toggle_button->active = !toggle_button->active;
263 tmp_list = radio_button->group;
266 tmp_button = tmp_list->data;
267 tmp_list = tmp_list->next;
269 if (tmp_button->active && (tmp_button != toggle_button))
271 gtk_button_clicked (GTK_BUTTON (tmp_button));
276 new_state = (button->in_button ? GTK_STATE_PRELIGHT : GTK_STATE_ACTIVE);
279 if (GTK_WIDGET_STATE (button) != new_state)
280 gtk_widget_set_state (GTK_WIDGET (button), new_state);
282 gtk_toggle_button_toggled (toggle_button);
283 gtk_widget_queue_draw (GTK_WIDGET (button));
287 gtk_radio_button_draw_indicator (GtkCheckButton *check_button,
292 GtkToggleButton *toggle_button;
293 GtkStateType state_type;
294 GtkShadowType shadow_type;
295 GdkRectangle restrict_area;
296 GdkRectangle new_area;
301 g_return_if_fail (check_button != NULL);
302 g_return_if_fail (GTK_IS_RADIO_BUTTON (check_button));
304 if (GTK_WIDGET_VISIBLE (check_button) && GTK_WIDGET_MAPPED (check_button))
306 widget = GTK_WIDGET (check_button);
307 button = GTK_BUTTON (check_button);
308 toggle_button = GTK_TOGGLE_BUTTON (check_button);
310 state_type = GTK_WIDGET_STATE (widget);
311 if ((state_type != GTK_STATE_NORMAL) &&
312 (state_type != GTK_STATE_PRELIGHT))
313 state_type = GTK_STATE_NORMAL;
315 restrict_area.x = GTK_CONTAINER (widget)->border_width;
316 restrict_area.y = restrict_area.x;
317 restrict_area.width = widget->allocation.width - restrict_area.x * 2;
318 restrict_area.height = widget->allocation.height - restrict_area.x * 2;
320 if (gdk_rectangle_intersect (area, &restrict_area, &new_area))
322 gtk_style_set_background (widget->style, widget->window, state_type);
323 gdk_window_clear_area (widget->window, new_area.x, new_area.y,
324 new_area.width, new_area.height);
327 x = CHECK_BUTTON_CLASS (widget)->indicator_spacing + GTK_CONTAINER (widget)->border_width;
328 y = (widget->allocation.height - CHECK_BUTTON_CLASS (widget)->indicator_size) / 2;
329 width = CHECK_BUTTON_CLASS (widget)->indicator_size;
330 height = CHECK_BUTTON_CLASS (widget)->indicator_size;
332 if (GTK_WIDGET_STATE (widget) == GTK_STATE_ACTIVE)
333 shadow_type = GTK_SHADOW_IN;
334 else if ((GTK_WIDGET_STATE (widget) == GTK_STATE_PRELIGHT) && toggle_button->active)
335 shadow_type = GTK_SHADOW_IN;
337 shadow_type = GTK_SHADOW_OUT;
339 pts[0].x = x + width / 2;
341 pts[1].x = x + width;
342 pts[1].y = y + height / 2;
344 pts[2].y = y + height;
348 gdk_draw_polygon (widget->window,
349 widget->style->bg_gc[GTK_WIDGET_STATE (widget)],
351 gtk_draw_diamond (widget->style, widget->window,
352 GTK_WIDGET_STATE (widget), shadow_type,
353 x, y, width, height);