1 #define __SP_GROUP_C__
3 /*
4 * SVG <g> implementation
5 *
6 * Authors:
7 * Lauris Kaplinski <lauris@kaplinski.com>
8 * bulia byak <buliabyak@users.sf.net>
9 *
10 * Copyright (C) 1999-2005 authors
11 * Copyright (C) 2000-2001 Ximian, Inc.
12 *
13 * Released under GNU GPL, read the file 'COPYING' for more information
14 */
16 #ifdef HAVE_CONFIG_H
17 # include "config.h"
18 #endif
20 #if defined(WIN32) || defined(__APPLE__)
21 # include <glibmm/i18n.h>
22 #endif
24 #include "display/nr-arena-group.h"
25 #include "libnr/nr-matrix-ops.h"
26 #include "libnr/nr-matrix-fns.h"
27 #include "xml/repr.h"
28 #include "svg/svg.h"
29 #include "document.h"
30 #include "style.h"
31 #include "attributes.h"
33 #include "sp-root.h"
34 #include "sp-use.h"
35 #include "prefs-utils.h"
37 static void sp_group_class_init (SPGroupClass *klass);
38 static void sp_group_init (SPGroup *group);
39 static void sp_group_build(SPObject *object, SPDocument *document, Inkscape::XML::Node *repr);
40 static void sp_group_release(SPObject *object);
41 static void sp_group_dispose (GObject *object);
43 static void sp_group_child_added (SPObject * object, Inkscape::XML::Node * child, Inkscape::XML::Node * ref);
44 static void sp_group_remove_child (SPObject * object, Inkscape::XML::Node * child);
45 static void sp_group_order_changed (SPObject * object, Inkscape::XML::Node * child, Inkscape::XML::Node * old_ref, Inkscape::XML::Node * new_ref);
46 static void sp_group_update (SPObject *object, SPCtx *ctx, guint flags);
47 static void sp_group_modified (SPObject *object, guint flags);
48 static Inkscape::XML::Node *sp_group_write (SPObject *object, Inkscape::XML::Node *repr, guint flags);
49 static void sp_group_set(SPObject *object, unsigned key, char const *value);
51 static void sp_group_bbox(SPItem const *item, NRRect *bbox, NR::Matrix const &transform, unsigned const flags);
52 static void sp_group_print (SPItem * item, SPPrintContext *ctx);
53 static gchar * sp_group_description (SPItem * item);
54 static NRArenaItem *sp_group_show (SPItem *item, NRArena *arena, unsigned int key, unsigned int flags);
55 static void sp_group_hide (SPItem * item, unsigned int key);
56 static void sp_group_snappoints (SPItem const *item, SnapPointsIter p);
58 static SPItemClass * parent_class;
60 GType
61 sp_group_get_type (void)
62 {
63 static GType group_type = 0;
64 if (!group_type) {
65 GTypeInfo group_info = {
66 sizeof (SPGroupClass),
67 NULL, /* base_init */
68 NULL, /* base_finalize */
69 (GClassInitFunc) sp_group_class_init,
70 NULL, /* class_finalize */
71 NULL, /* class_data */
72 sizeof (SPGroup),
73 16, /* n_preallocs */
74 (GInstanceInitFunc) sp_group_init,
75 NULL, /* value_table */
76 };
77 group_type = g_type_register_static (SP_TYPE_ITEM, "SPGroup", &group_info, (GTypeFlags)0);
78 }
79 return group_type;
80 }
82 static void
83 sp_group_class_init (SPGroupClass *klass)
84 {
85 GObjectClass * object_class;
86 SPObjectClass * sp_object_class;
87 SPItemClass * item_class;
89 object_class = (GObjectClass *) klass;
90 sp_object_class = (SPObjectClass *) klass;
91 item_class = (SPItemClass *) klass;
93 parent_class = (SPItemClass *)g_type_class_ref (SP_TYPE_ITEM);
95 object_class->dispose = sp_group_dispose;
97 sp_object_class->child_added = sp_group_child_added;
98 sp_object_class->remove_child = sp_group_remove_child;
99 sp_object_class->order_changed = sp_group_order_changed;
100 sp_object_class->update = sp_group_update;
101 sp_object_class->modified = sp_group_modified;
102 sp_object_class->set = sp_group_set;
103 sp_object_class->write = sp_group_write;
104 sp_object_class->release = sp_group_release;
105 sp_object_class->build = sp_group_build;
107 item_class->bbox = sp_group_bbox;
108 item_class->print = sp_group_print;
109 item_class->description = sp_group_description;
110 item_class->show = sp_group_show;
111 item_class->hide = sp_group_hide;
112 item_class->snappoints = sp_group_snappoints;
113 }
115 static void
116 sp_group_init (SPGroup *group)
117 {
118 group->_layer_mode = SPGroup::GROUP;
119 new (&group->_display_modes) std::map<unsigned int, SPGroup::LayerMode>();
120 }
122 static void sp_group_build(SPObject *object, SPDocument *document, Inkscape::XML::Node *repr)
123 {
124 sp_object_read_attr(object, "inkscape:groupmode");
126 if (((SPObjectClass *)parent_class)->build) {
127 ((SPObjectClass *)parent_class)->build(object, document, repr);
128 }
129 }
131 static void sp_group_release(SPObject *object) {
132 if ( SP_GROUP(object)->_layer_mode == SPGroup::LAYER ) {
133 sp_document_remove_resource(SP_OBJECT_DOCUMENT(object), "layer", object);
134 }
135 if (((SPObjectClass *)parent_class)->release) {
136 ((SPObjectClass *)parent_class)->release(object);
137 }
138 }
140 static void
141 sp_group_dispose(GObject *object)
142 {
143 SP_GROUP(object)->_display_modes.~map();
144 }
146 static void
147 sp_group_child_added (SPObject *object, Inkscape::XML::Node *child, Inkscape::XML::Node *ref)
148 {
149 SPItem *item;
151 item = SP_ITEM (object);
153 if (((SPObjectClass *) (parent_class))->child_added)
154 (* ((SPObjectClass *) (parent_class))->child_added) (object, child, ref);
156 SPObject *last_child = object->lastChild();
157 if (last_child && SP_OBJECT_REPR(last_child) == child) {
158 // optimization for the common special case where the child is being added at the end
159 SPObject *ochild = last_child;
160 if ( SP_IS_ITEM(ochild) ) {
161 /* TODO: this should be moved into SPItem somehow */
162 SPItemView *v;
163 NRArenaItem *ac;
165 for (v = item->display; v != NULL; v = v->next) {
166 ac = sp_item_invoke_show (SP_ITEM (ochild), NR_ARENA_ITEM_ARENA (v->arenaitem), v->key, v->flags);
168 if (ac) {
169 nr_arena_item_append_child (v->arenaitem, ac);
170 nr_arena_item_unref (ac);
171 }
172 }
173 }
174 } else { // general case
175 SPObject *ochild = sp_object_get_child_by_repr(object, child);
176 if ( ochild && SP_IS_ITEM(ochild) ) {
177 /* TODO: this should be moved into SPItem somehow */
178 SPItemView *v;
179 NRArenaItem *ac;
181 unsigned position = sp_item_pos_in_parent(SP_ITEM(ochild));
183 for (v = item->display; v != NULL; v = v->next) {
184 ac = sp_item_invoke_show (SP_ITEM (ochild), NR_ARENA_ITEM_ARENA (v->arenaitem), v->key, v->flags);
186 if (ac) {
187 nr_arena_item_add_child (v->arenaitem, ac, NULL);
188 nr_arena_item_set_order (ac, position);
189 nr_arena_item_unref (ac);
190 }
191 }
192 }
193 }
195 object->requestModified(SP_OBJECT_MODIFIED_FLAG);
196 }
198 /* fixme: hide (Lauris) */
200 static void
201 sp_group_remove_child (SPObject * object, Inkscape::XML::Node * child)
202 {
203 if (((SPObjectClass *) (parent_class))->remove_child)
204 (* ((SPObjectClass *) (parent_class))->remove_child) (object, child);
206 object->requestModified(SP_OBJECT_MODIFIED_FLAG);
207 }
209 static void
210 sp_group_order_changed (SPObject *object, Inkscape::XML::Node *child, Inkscape::XML::Node *old_ref, Inkscape::XML::Node *new_ref)
211 {
212 if (((SPObjectClass *) (parent_class))->order_changed)
213 (* ((SPObjectClass *) (parent_class))->order_changed) (object, child, old_ref, new_ref);
215 SPObject *ochild = sp_object_get_child_by_repr(object, child);
216 if ( ochild && SP_IS_ITEM(ochild) ) {
217 /* TODO: this should be moved into SPItem somehow */
218 SPItemView *v;
219 unsigned position = sp_item_pos_in_parent(SP_ITEM(ochild));
220 for ( v = SP_ITEM (ochild)->display ; v != NULL ; v = v->next ) {
221 nr_arena_item_set_order (v->arenaitem, position);
222 }
223 }
225 object->requestModified(SP_OBJECT_MODIFIED_FLAG);
226 }
228 static void
229 sp_group_update (SPObject *object, SPCtx *ctx, unsigned int flags)
230 {
231 SPGroup *group;
232 SPObject *child;
233 SPItemCtx *ictx, cctx;
234 GSList *l;
236 group = SP_GROUP (object);
237 ictx = (SPItemCtx *) ctx;
238 cctx = *ictx;
240 if (((SPObjectClass *) (parent_class))->update)
241 ((SPObjectClass *) (parent_class))->update (object, ctx, flags);
243 if (flags & SP_OBJECT_MODIFIED_FLAG) flags |= SP_OBJECT_PARENT_MODIFIED_FLAG;
244 flags &= SP_OBJECT_MODIFIED_CASCADE;
246 l = NULL;
247 for (child = sp_object_first_child(object) ; child != NULL ; child = SP_OBJECT_NEXT(child) ) {
248 g_object_ref (G_OBJECT (child));
249 l = g_slist_prepend (l, child);
250 }
251 l = g_slist_reverse (l);
252 while (l) {
253 child = SP_OBJECT (l->data);
254 l = g_slist_remove (l, child);
255 if (flags || (child->uflags & (SP_OBJECT_MODIFIED_FLAG | SP_OBJECT_CHILD_MODIFIED_FLAG))) {
256 if (SP_IS_ITEM (child)) {
257 SPItem const &chi = *SP_ITEM(child);
258 cctx.i2doc = chi.transform * ictx->i2doc;
259 cctx.i2vp = chi.transform * ictx->i2vp;
260 child->updateDisplay((SPCtx *)&cctx, flags);
261 } else {
262 child->updateDisplay(ctx, flags);
263 }
264 }
265 g_object_unref (G_OBJECT (child));
266 }
267 }
269 static void
270 sp_group_modified (SPObject *object, guint flags)
271 {
272 SPGroup *group;
273 SPObject *child;
274 GSList *l;
276 group = SP_GROUP (object);
278 if (flags & SP_OBJECT_MODIFIED_FLAG) flags |= SP_OBJECT_PARENT_MODIFIED_FLAG;
279 flags &= SP_OBJECT_MODIFIED_CASCADE;
281 l = NULL;
282 for (child = sp_object_first_child(object) ; child != NULL ; child = SP_OBJECT_NEXT(child) ) {
283 g_object_ref (G_OBJECT (child));
284 l = g_slist_prepend (l, child);
285 }
286 l = g_slist_reverse (l);
287 while (l) {
288 child = SP_OBJECT (l->data);
289 l = g_slist_remove (l, child);
290 if (flags || (child->mflags & (SP_OBJECT_MODIFIED_FLAG | SP_OBJECT_CHILD_MODIFIED_FLAG))) {
291 child->emitModified(flags);
292 }
293 g_object_unref (G_OBJECT (child));
294 }
295 }
297 static Inkscape::XML::Node *
298 sp_group_write (SPObject *object, Inkscape::XML::Node *repr, guint flags)
299 {
300 SPGroup *group;
301 SPObject *child;
302 Inkscape::XML::Node *crepr;
304 group = SP_GROUP (object);
306 if (flags & SP_OBJECT_WRITE_BUILD) {
307 GSList *l;
308 if (!repr) repr = sp_repr_new ("svg:g");
309 l = NULL;
310 for (child = sp_object_first_child(object); child != NULL; child = SP_OBJECT_NEXT(child) ) {
311 crepr = child->updateRepr(NULL, flags);
312 if (crepr) l = g_slist_prepend (l, crepr);
313 }
314 while (l) {
315 repr->addChild((Inkscape::XML::Node *) l->data, NULL);
316 Inkscape::GC::release((Inkscape::XML::Node *) l->data);
317 l = g_slist_remove (l, l->data);
318 }
319 } else {
320 for (child = sp_object_first_child(object) ; child != NULL; child = SP_OBJECT_NEXT(child) ) {
321 child->updateRepr(flags);
322 }
323 }
325 if ( flags & SP_OBJECT_WRITE_EXT ) {
326 const char *value;
327 if ( group->_layer_mode == SPGroup::LAYER ) {
328 value = "layer";
329 } else if ( flags & SP_OBJECT_WRITE_ALL ) {
330 value = "group";
331 } else {
332 value = NULL;
333 }
334 repr->setAttribute("inkscape:groupmode", value);
335 }
337 if (((SPObjectClass *) (parent_class))->write)
338 ((SPObjectClass *) (parent_class))->write (object, repr, flags);
340 return repr;
341 }
343 static void
344 sp_group_bbox(SPItem const *item, NRRect *bbox, NR::Matrix const &transform, unsigned const flags)
345 {
346 for (SPObject *o = sp_object_first_child(SP_OBJECT(item)); o != NULL; o = SP_OBJECT_NEXT(o)) {
347 if (SP_IS_ITEM(o)) {
348 SPItem *child = SP_ITEM(o);
349 NR::Matrix const ct(child->transform * transform);
350 sp_item_invoke_bbox_full(child, bbox, ct, flags, FALSE);
351 }
352 }
353 }
355 static void
356 sp_group_print (SPItem * item, SPPrintContext *ctx)
357 {
358 SPGroup * group;
359 SPItem * child;
360 SPObject * o;
362 group = SP_GROUP (item);
364 for (o = sp_object_first_child(SP_OBJECT(item)) ; o != NULL ; o = SP_OBJECT_NEXT(o) ) {
365 if (SP_IS_ITEM (o)) {
366 child = SP_ITEM (o);
367 sp_item_invoke_print (SP_ITEM (o), ctx);
368 }
369 }
370 }
372 static gchar * sp_group_description (SPItem * item)
373 {
374 SPGroup * group;
375 SPObject * o;
376 gint len;
378 group = SP_GROUP (item);
380 len = 0;
381 for ( o = sp_object_first_child(SP_OBJECT(item)) ; o != NULL ; o = SP_OBJECT_NEXT(o) ) {
382 if (SP_IS_ITEM(o)) {
383 len += 1;
384 }
385 }
387 return g_strdup_printf(
388 ngettext("<b>Group</b> of <b>%d</b> object",
389 "<b>Group</b> of <b>%d</b> objects",
390 len), len);
391 }
393 static void sp_group_set(SPObject *object, unsigned key, char const *value) {
394 SPGroup *group=SP_GROUP(object);
396 switch (key) {
397 case SP_ATTR_INKSCAPE_GROUPMODE: {
398 if ( value && !strcmp(value, "layer") ) {
399 group->setLayerMode(SPGroup::LAYER);
400 } else {
401 group->setLayerMode(SPGroup::GROUP);
402 }
403 } break;
404 default: {
405 if (((SPObjectClass *) (parent_class))->set) {
406 (* ((SPObjectClass *) (parent_class))->set)(object, key, value);
407 }
408 }
409 }
410 }
412 static NRArenaItem *
413 sp_group_show (SPItem *item, NRArena *arena, unsigned int key, unsigned int flags)
414 {
415 SPGroup *group;
416 NRArenaItem *ai, *ac, *ar;
417 SPItem * child;
418 SPObject * o;
420 group = (SPGroup *) item;
422 ai = NRArenaGroup::create(arena);
423 nr_arena_group_set_transparent(NR_ARENA_GROUP (ai),
424 group->effectiveLayerMode(key) ==
425 SPGroup::LAYER);
427 ar = NULL;
429 for (o = sp_object_first_child(SP_OBJECT(item)) ; o != NULL; o = SP_OBJECT_NEXT(o) ) {
430 if (SP_IS_ITEM (o)) {
431 child = SP_ITEM (o);
432 ac = sp_item_invoke_show (child, arena, key, flags);
433 if (ac) {
434 nr_arena_item_add_child (ai, ac, ar);
435 ar = ac;
436 nr_arena_item_unref (ac);
437 }
438 }
439 }
441 return ai;
442 }
444 static void
445 sp_group_hide (SPItem *item, unsigned int key)
446 {
447 SPGroup * group;
448 SPItem * child;
449 SPObject * o;
451 group = (SPGroup *) item;
453 for (o = sp_object_first_child(SP_OBJECT(item)) ; o != NULL; o = SP_OBJECT_NEXT(o) ) {
454 if (SP_IS_ITEM (o)) {
455 child = SP_ITEM (o);
456 sp_item_invoke_hide (child, key);
457 }
458 }
460 if (((SPItemClass *) parent_class)->hide)
461 ((SPItemClass *) parent_class)->hide (item, key);
462 }
464 static void sp_group_snappoints (SPItem const *item, SnapPointsIter p)
465 {
466 for (SPObject const *o = sp_object_first_child(SP_OBJECT(item));
467 o != NULL;
468 o = SP_OBJECT_NEXT(o))
469 {
470 if (SP_IS_ITEM(o)) {
471 sp_item_snappoints(SP_ITEM(o), p);
472 }
473 }
474 }
477 void
478 sp_item_group_ungroup (SPGroup *group, GSList **children, bool do_done)
479 {
480 g_return_if_fail (group != NULL);
481 g_return_if_fail (SP_IS_GROUP (group));
483 SPDocument *doc = SP_OBJECT_DOCUMENT (group);
484 SPObject *root = SP_DOCUMENT_ROOT (doc);
485 SPObject *defs = SP_OBJECT (SP_ROOT (root)->defs);
487 SPItem *gitem = SP_ITEM (group);
488 Inkscape::XML::Node *grepr = SP_OBJECT_REPR (gitem);
490 g_return_if_fail (!strcmp (grepr->name(), "svg:g") || !strcmp (grepr->name(), "svg:a") || !strcmp (grepr->name(), "svg:switch"));
492 // this converts the gradient/pattern fill/stroke on the group, if any, to userSpaceOnUse
493 sp_item_adjust_paint_recursive (gitem, NR::identity(), NR::identity(), false);
495 SPItem *pitem = SP_ITEM (SP_OBJECT_PARENT (gitem));
496 Inkscape::XML::Node *prepr = SP_OBJECT_REPR (pitem);
498 /* Step 1 - generate lists of children objects */
499 GSList *items = NULL;
500 GSList *objects = NULL;
501 for (SPObject *child = sp_object_first_child(SP_OBJECT(group)) ; child != NULL; child = SP_OBJECT_NEXT(child) ) {
503 if (SP_IS_ITEM (child)) {
505 SPItem *citem = SP_ITEM (child);
507 /* Merging of style */
508 // this converts the gradient/pattern fill/stroke, if any, to userSpaceOnUse; we need to do
509 // it here _before_ the new transform is set, so as to use the pre-transform bbox
510 sp_item_adjust_paint_recursive (citem, NR::identity(), NR::identity(), false);
512 sp_style_merge_from_dying_parent(SP_OBJECT_STYLE(child), SP_OBJECT_STYLE(gitem));
513 /*
514 * fixme: We currently make no allowance for the case where child is cloned
515 * and the group has any style settings.
516 *
517 * (This should never occur with documents created solely with the current
518 * version of inkscape without using the XML editor: we usually apply group
519 * style changes to children rather than to the group itself.)
520 *
521 * If the group has no style settings, then
522 * sp_style_merge_from_dying_parent should be a no-op. Otherwise (i.e. if
523 * we change the child's style to compensate for its parent going away)
524 * then those changes will typically be reflected in any clones of child,
525 * whereas we'd prefer for Ungroup not to affect the visual appearance.
526 *
527 * The only way of preserving styling appearance in general is for child to
528 * be put into a new group -- a somewhat surprising response to an Ungroup
529 * command. We could add a new groupmode:transparent that would mostly
530 * hide the existence of such groups from the user (i.e. editing behaves as
531 * if the transparent group's children weren't in a group), though that's
532 * extra complication & maintenance burden and this case is rare.
533 */
535 child->updateRepr();
537 Inkscape::XML::Node *nrepr = SP_OBJECT_REPR (child)->duplicate();
539 // Merging transform
540 NR::Matrix ctrans;
541 NR::Matrix const g(gitem->transform);
542 if (SP_IS_USE(citem) && sp_use_get_original (SP_USE(citem)) &&
543 SP_OBJECT_PARENT (sp_use_get_original (SP_USE(citem))) == SP_OBJECT(group)) {
544 // make sure a clone's effective transform is the same as was under group
545 ctrans = g.inverse() * citem->transform * g;
546 } else {
547 ctrans = citem->transform * g;
548 }
550 // FIXME: constructing a transform that would fully preserve the appearance of a
551 // textpath if it is ungrouped with its path seems to be impossible in general
552 // case. E.g. if the group was squeezed, to keep the ungrouped textpath squeezed
553 // as well, we'll need to relink it to some "virtual" path which is inversely
554 // stretched relative to the actual path, and then squeeze the textpath back so it
555 // would both fit the actual path _and_ be squeezed as before. It's a bummer.
557 // This is just a way to temporarily remember the transform in repr. When repr is
558 // reattached outside of the group, the transform will be written more properly
559 // (i.e. optimized into the object if the corresponding preference is set)
560 gchar affinestr[80];
561 if (sp_svg_transform_write(affinestr, 79, ctrans)) {
562 nrepr->setAttribute("transform", affinestr);
563 } else {
564 nrepr->setAttribute("transform", NULL);
565 }
567 items = g_slist_prepend (items, nrepr);
569 } else {
570 Inkscape::XML::Node *nrepr = SP_OBJECT_REPR (child)->duplicate();
571 objects = g_slist_prepend (objects, nrepr);
572 }
573 }
575 /* Step 2 - clear group */
576 // remember the position of the group
577 gint pos = SP_OBJECT_REPR(group)->position();
579 // the group is leaving forever, no heir, clones should take note; its children however are going to reemerge
580 SP_OBJECT (group)->deleteObject(true, false);
582 /* Step 3 - add nonitems */
583 if (objects) {
584 Inkscape::XML::Node *last_def = SP_OBJECT_REPR(defs)->lastChild();
585 while (objects) {
586 SP_OBJECT_REPR(defs)->addChild((Inkscape::XML::Node *) objects->data, last_def);
587 Inkscape::GC::release((Inkscape::XML::Node *) objects->data);
588 objects = g_slist_remove (objects, objects->data);
589 }
590 }
592 /* Step 4 - add items */
593 gint const preserve = prefs_get_int_attribute("options.preservetransform", "value", 0);
594 while (items) {
595 Inkscape::XML::Node *repr = (Inkscape::XML::Node *) items->data;
596 // add item
597 prepr->appendChild(repr);
598 // restore position; since the items list was prepended (i.e. reverse), we now add
599 // all children at the same pos, which inverts the order once again
600 repr->setPosition(pos > 0 ? pos : 0);
602 // fill in the children list if non-null
603 SPItem *nitem = (SPItem *) doc->getObjectByRepr(repr);
605 /* Optimize the transform matrix if requested. */
606 // No compensations are required because this is supposed to be a non-transformation visually.
607 if (!preserve) {
608 NR::Matrix (*set_transform)(SPItem *, NR::Matrix const &) = ((SPItemClass *) G_OBJECT_GET_CLASS(nitem))->set_transform;
609 if (set_transform) {
610 sp_item_set_item_transform(nitem, set_transform(nitem, nitem->transform));
611 nitem->updateRepr();
612 }
613 }
615 Inkscape::GC::release(repr);
616 if (children && SP_IS_ITEM (nitem))
617 *children = g_slist_prepend (*children, nitem);
619 items = g_slist_remove (items, items->data);
620 }
622 if (do_done) sp_document_done (doc);
623 }
625 /*
626 * some API for list aspect of SPGroup
627 */
629 GSList *
630 sp_item_group_item_list (SPGroup * group)
631 {
632 GSList *s;
633 SPObject *o;
635 g_return_val_if_fail (group != NULL, NULL);
636 g_return_val_if_fail (SP_IS_GROUP (group), NULL);
638 s = NULL;
640 for ( o = sp_object_first_child(SP_OBJECT(group)) ; o != NULL ; o = SP_OBJECT_NEXT(o) ) {
641 if (SP_IS_ITEM (o)) {
642 s = g_slist_prepend (s, o);
643 }
644 }
646 return g_slist_reverse (s);
647 }
649 SPObject *
650 sp_item_group_get_child_by_name (SPGroup *group, SPObject *ref, const gchar *name)
651 {
652 SPObject *child;
653 child = (ref) ? SP_OBJECT_NEXT(ref) : sp_object_first_child(SP_OBJECT(group));
654 while ( child && strcmp (SP_OBJECT_REPR(child)->name(), name) ) {
655 child = SP_OBJECT_NEXT(child);
656 }
657 return child;
658 }
660 void SPGroup::setLayerMode(LayerMode mode) {
661 if ( _layer_mode != mode ) {
662 if ( mode == LAYER ) {
663 sp_document_add_resource(SP_OBJECT_DOCUMENT(this), "layer", this);
664 } else {
665 sp_document_remove_resource(SP_OBJECT_DOCUMENT(this), "layer", this);
666 }
667 _layer_mode = mode;
668 _updateLayerMode();
669 }
670 }
672 SPGroup::LayerMode SPGroup::layerDisplayMode(unsigned int dkey) const {
673 std::map<unsigned int, LayerMode>::const_iterator iter;
674 iter = _display_modes.find(dkey);
675 if ( iter != _display_modes.end() ) {
676 return (*iter).second;
677 } else {
678 return GROUP;
679 }
680 }
682 void SPGroup::setLayerDisplayMode(unsigned int dkey, SPGroup::LayerMode mode) {
683 if ( layerDisplayMode(dkey) != mode ) {
684 _display_modes[dkey] = mode;
685 _updateLayerMode(dkey);
686 }
687 }
689 void SPGroup::_updateLayerMode(unsigned int display_key) {
690 SPItemView *view;
691 for ( view = this->display ; view ; view = view->next ) {
692 if ( !display_key || view->key == display_key ) {
693 NRArenaGroup *arena_group=NR_ARENA_GROUP(view->arenaitem);
694 if (arena_group) {
695 nr_arena_group_set_transparent(arena_group, effectiveLayerMode(view->key) == SPGroup::LAYER);
696 }
697 }
698 }
699 }