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.
26 static void gtk_box_class_init (GtkBoxClass *klass);
27 static void gtk_box_init (GtkBox *box);
28 static void gtk_box_get_arg (GtkBox *box,
31 static void gtk_box_set_arg (GtkBox *box,
34 static void gtk_box_destroy (GtkObject *object);
35 static void gtk_box_map (GtkWidget *widget);
36 static void gtk_box_unmap (GtkWidget *widget);
37 static void gtk_box_draw (GtkWidget *widget,
39 static gint gtk_box_expose (GtkWidget *widget,
40 GdkEventExpose *event);
41 static void gtk_box_add (GtkContainer *container,
43 static void gtk_box_remove (GtkContainer *container,
45 static void gtk_box_foreach (GtkContainer *container,
47 gpointer callback_data);
50 static GtkContainerClass *parent_class = NULL;
56 static guint box_type = 0;
60 GtkTypeInfo box_info =
65 (GtkClassInitFunc) gtk_box_class_init,
66 (GtkObjectInitFunc) gtk_box_init,
67 (GtkArgSetFunc) gtk_box_set_arg,
68 (GtkArgGetFunc) gtk_box_get_arg,
71 box_type = gtk_type_unique (gtk_container_get_type (), &box_info);
78 gtk_box_class_init (GtkBoxClass *class)
80 GtkObjectClass *object_class;
81 GtkWidgetClass *widget_class;
82 GtkContainerClass *container_class;
84 object_class = (GtkObjectClass*) class;
85 widget_class = (GtkWidgetClass*) class;
86 container_class = (GtkContainerClass*) class;
88 parent_class = gtk_type_class (gtk_container_get_type ());
90 gtk_object_add_arg_type ("GtkBox::spacing", GTK_TYPE_INT, ARG_SPACING);
91 gtk_object_add_arg_type ("GtkBox::homogeneous", GTK_TYPE_BOOL, ARG_HOMOGENEOUS);
93 object_class->destroy = gtk_box_destroy;
95 widget_class->map = gtk_box_map;
96 widget_class->unmap = gtk_box_unmap;
97 widget_class->draw = gtk_box_draw;
98 widget_class->expose_event = gtk_box_expose;
100 container_class->add = gtk_box_add;
101 container_class->remove = gtk_box_remove;
102 container_class->foreach = gtk_box_foreach;
106 gtk_box_init (GtkBox *box)
108 GTK_WIDGET_SET_FLAGS (box, GTK_NO_WINDOW | GTK_BASIC);
110 box->children = NULL;
112 box->homogeneous = FALSE;
116 gtk_box_set_arg (GtkBox *box,
123 gtk_box_set_spacing (box, GTK_VALUE_INT (*arg));
125 case ARG_HOMOGENEOUS:
126 gtk_box_set_homogeneous (box, GTK_VALUE_BOOL (*arg));
132 gtk_box_get_arg (GtkBox *box,
139 GTK_VALUE_INT (*arg) = box->spacing;
141 case ARG_HOMOGENEOUS:
142 GTK_VALUE_BOOL (*arg) = box->homogeneous;
145 arg->type = GTK_TYPE_INVALID;
151 gtk_box_pack_start (GtkBox *box,
157 GtkBoxChild *child_info;
159 g_return_if_fail (box != NULL);
160 g_return_if_fail (GTK_IS_BOX (box));
161 g_return_if_fail (child != NULL);
163 child_info = g_new (GtkBoxChild, 1);
164 child_info->widget = child;
165 child_info->padding = padding;
166 child_info->expand = expand ? TRUE : FALSE;
167 child_info->fill = fill ? TRUE : FALSE;
168 child_info->pack = GTK_PACK_START;
170 box->children = g_list_append (box->children, child_info);
172 gtk_widget_set_parent (child, GTK_WIDGET (box));
174 if (GTK_WIDGET_VISIBLE (GTK_WIDGET (box)))
176 if (GTK_WIDGET_REALIZED (GTK_WIDGET (box)) &&
177 !GTK_WIDGET_REALIZED (child))
178 gtk_widget_realize (child);
180 if (GTK_WIDGET_MAPPED (GTK_WIDGET (box)) &&
181 !GTK_WIDGET_MAPPED (child))
182 gtk_widget_map (child);
185 if (GTK_WIDGET_VISIBLE (child) && GTK_WIDGET_VISIBLE (box))
186 gtk_widget_queue_resize (child);
190 gtk_box_pack_end (GtkBox *box,
196 GtkBoxChild *child_info;
198 g_return_if_fail (box != NULL);
199 g_return_if_fail (GTK_IS_BOX (box));
200 g_return_if_fail (child != NULL);
202 child_info = g_new (GtkBoxChild, 1);
203 child_info->widget = child;
204 child_info->padding = padding;
205 child_info->expand = expand ? TRUE : FALSE;
206 child_info->fill = fill ? TRUE : FALSE;
207 child_info->pack = GTK_PACK_END;
209 box->children = g_list_append (box->children, child_info);
211 gtk_widget_set_parent (child, GTK_WIDGET (box));
213 if (GTK_WIDGET_VISIBLE (GTK_WIDGET (box)))
215 if (GTK_WIDGET_REALIZED (GTK_WIDGET (box)) &&
216 !GTK_WIDGET_REALIZED (child))
217 gtk_widget_realize (child);
219 if (GTK_WIDGET_MAPPED (GTK_WIDGET (box)) &&
220 !GTK_WIDGET_MAPPED (child))
221 gtk_widget_map (child);
224 if (GTK_WIDGET_VISIBLE (child) && GTK_WIDGET_VISIBLE (box))
225 gtk_widget_queue_resize (child);
229 gtk_box_pack_start_defaults (GtkBox *box,
232 g_return_if_fail (box != NULL);
233 g_return_if_fail (GTK_IS_BOX (box));
234 g_return_if_fail (child != NULL);
236 gtk_box_pack_start (box, child, TRUE, TRUE, 0);
240 gtk_box_pack_end_defaults (GtkBox *box,
243 g_return_if_fail (box != NULL);
244 g_return_if_fail (GTK_IS_BOX (box));
245 g_return_if_fail (child != NULL);
247 gtk_box_pack_end (box, child, TRUE, TRUE, 0);
251 gtk_box_set_homogeneous (GtkBox *box,
254 g_return_if_fail (box != NULL);
255 g_return_if_fail (GTK_IS_BOX (box));
257 if ((homogeneous ? TRUE : FALSE) != box->homogeneous)
259 box->homogeneous = homogeneous ? TRUE : FALSE;
260 gtk_widget_queue_resize (GTK_WIDGET (box));
265 gtk_box_set_spacing (GtkBox *box,
268 g_return_if_fail (box != NULL);
269 g_return_if_fail (GTK_IS_BOX (box));
271 if (spacing != box->spacing)
273 box->spacing = spacing;
274 gtk_widget_queue_resize (GTK_WIDGET (box));
280 gtk_box_destroy (GtkObject *object)
286 g_return_if_fail (object != NULL);
287 g_return_if_fail (GTK_IS_BOX (object));
289 box = GTK_BOX (object);
291 children = box->children;
294 child = children->data;
295 children = children->next;
297 child->widget->parent = NULL;
298 gtk_object_unref (GTK_OBJECT (child->widget));
299 gtk_widget_destroy (child->widget);
303 g_list_free (box->children);
305 if (GTK_OBJECT_CLASS (parent_class)->destroy)
306 (* GTK_OBJECT_CLASS (parent_class)->destroy) (object);
310 gtk_box_map (GtkWidget *widget)
316 g_return_if_fail (widget != NULL);
317 g_return_if_fail (GTK_IS_BOX (widget));
319 box = GTK_BOX (widget);
320 GTK_WIDGET_SET_FLAGS (box, GTK_MAPPED);
322 children = box->children;
325 child = children->data;
326 children = children->next;
328 if (GTK_WIDGET_VISIBLE (child->widget) &&
329 !GTK_WIDGET_MAPPED (child->widget))
330 gtk_widget_map (child->widget);
335 gtk_box_unmap (GtkWidget *widget)
341 g_return_if_fail (widget != NULL);
342 g_return_if_fail (GTK_IS_BOX (widget));
344 box = GTK_BOX (widget);
345 GTK_WIDGET_UNSET_FLAGS (box, GTK_MAPPED);
347 children = box->children;
350 child = children->data;
351 children = children->next;
353 if (GTK_WIDGET_VISIBLE (child->widget) &&
354 GTK_WIDGET_MAPPED (child->widget))
355 gtk_widget_unmap (child->widget);
360 gtk_box_draw (GtkWidget *widget,
365 GdkRectangle child_area;
368 g_return_if_fail (widget != NULL);
369 g_return_if_fail (GTK_IS_BOX (widget));
371 if (GTK_WIDGET_DRAWABLE (widget))
373 box = GTK_BOX (widget);
375 children = box->children;
378 child = children->data;
379 children = children->next;
381 if (gtk_widget_intersect (child->widget, area, &child_area))
382 gtk_widget_draw (child->widget, &child_area);
388 gtk_box_expose (GtkWidget *widget,
389 GdkEventExpose *event)
393 GdkEventExpose child_event;
396 g_return_val_if_fail (widget != NULL, FALSE);
397 g_return_val_if_fail (GTK_IS_BOX (widget), FALSE);
398 g_return_val_if_fail (event != NULL, FALSE);
400 if (GTK_WIDGET_DRAWABLE (widget))
402 box = GTK_BOX (widget);
404 child_event = *event;
406 children = box->children;
409 child = children->data;
410 children = children->next;
412 if (GTK_WIDGET_NO_WINDOW (child->widget) &&
413 gtk_widget_intersect (child->widget, &event->area, &child_event.area))
414 gtk_widget_event (child->widget, (GdkEvent*) &child_event);
422 gtk_box_add (GtkContainer *container,
425 g_return_if_fail (container != NULL);
426 g_return_if_fail (GTK_IS_BOX (container));
427 g_return_if_fail (widget != NULL);
429 gtk_box_pack_start_defaults (GTK_BOX (container), widget);
433 gtk_box_remove (GtkContainer *container,
440 g_return_if_fail (container != NULL);
441 g_return_if_fail (GTK_IS_BOX (container));
442 g_return_if_fail (widget != NULL);
444 box = GTK_BOX (container);
446 children = box->children;
449 child = children->data;
451 if (child->widget == widget)
453 gtk_widget_unparent (widget);
455 box->children = g_list_remove_link (box->children, children);
456 g_list_free (children);
459 if (GTK_WIDGET_VISIBLE (widget) && GTK_WIDGET_VISIBLE (container))
460 gtk_widget_queue_resize (GTK_WIDGET (container));
465 children = children->next;
470 gtk_box_foreach (GtkContainer *container,
471 GtkCallback callback,
472 gpointer callback_data)
478 g_return_if_fail (container != NULL);
479 g_return_if_fail (GTK_IS_BOX (container));
480 g_return_if_fail (callback != NULL);
482 box = GTK_BOX (container);
484 children = box->children;
487 child = children->data;
488 children = children->next;
490 if (child->pack == GTK_PACK_START)
491 (* callback) (child->widget, callback_data);
494 children = g_list_last (box->children);
497 child = children->data;
498 children = children->prev;
500 if (child->pack == GTK_PACK_END)
501 (* callback) (child->widget, callback_data);