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"
32 #include "sp-item-transform.h"
34 #include "sp-root.h"
35 #include "sp-use.h"
36 #include "prefs-utils.h"
38 static void sp_group_class_init (SPGroupClass *klass);
39 static void sp_group_init (SPGroup *group);
40 static void sp_group_build(SPObject *object, SPDocument *document, Inkscape::XML::Node *repr);
41 static void sp_group_release(SPObject *object);
42 static void sp_group_dispose(GObject *object);
44 static void sp_group_child_added (SPObject * object, Inkscape::XML::Node * child, Inkscape::XML::Node * ref);
45 static void sp_group_remove_child (SPObject * object, Inkscape::XML::Node * child);
46 static void sp_group_order_changed (SPObject * object, Inkscape::XML::Node * child, Inkscape::XML::Node * old_ref, Inkscape::XML::Node * new_ref);
47 static void sp_group_update (SPObject *object, SPCtx *ctx, guint flags);
48 static void sp_group_modified (SPObject *object, guint flags);
49 static Inkscape::XML::Node *sp_group_write (SPObject *object, Inkscape::XML::Node *repr, guint flags);
50 static void sp_group_set(SPObject *object, unsigned key, char const *value);
52 static void sp_group_bbox(SPItem const *item, NRRect *bbox, NR::Matrix const &transform, unsigned const flags);
53 static void sp_group_print (SPItem * item, SPPrintContext *ctx);
54 static gchar * sp_group_description (SPItem * item);
55 static NRArenaItem *sp_group_show (SPItem *item, NRArena *arena, unsigned int key, unsigned int flags);
56 static void sp_group_hide (SPItem * item, unsigned int key);
57 static void sp_group_snappoints (SPItem const *item, SnapPointsIter p);
59 static SPItemClass * parent_class;
61 GType
62 sp_group_get_type (void)
63 {
64 static GType group_type = 0;
65 if (!group_type) {
66 GTypeInfo group_info = {
67 sizeof (SPGroupClass),
68 NULL, /* base_init */
69 NULL, /* base_finalize */
70 (GClassInitFunc) sp_group_class_init,
71 NULL, /* class_finalize */
72 NULL, /* class_data */
73 sizeof (SPGroup),
74 16, /* n_preallocs */
75 (GInstanceInitFunc) sp_group_init,
76 NULL, /* value_table */
77 };
78 group_type = g_type_register_static (SP_TYPE_ITEM, "SPGroup", &group_info, (GTypeFlags)0);
79 }
80 return group_type;
81 }
83 static void
84 sp_group_class_init (SPGroupClass *klass)
85 {
86 GObjectClass * object_class;
87 SPObjectClass * sp_object_class;
88 SPItemClass * item_class;
90 object_class = (GObjectClass *) klass;
91 sp_object_class = (SPObjectClass *) klass;
92 item_class = (SPItemClass *) klass;
94 parent_class = (SPItemClass *)g_type_class_ref (SP_TYPE_ITEM);
96 object_class->dispose = sp_group_dispose;
98 sp_object_class->child_added = sp_group_child_added;
99 sp_object_class->remove_child = sp_group_remove_child;
100 sp_object_class->order_changed = sp_group_order_changed;
101 sp_object_class->update = sp_group_update;
102 sp_object_class->modified = sp_group_modified;
103 sp_object_class->set = sp_group_set;
104 sp_object_class->write = sp_group_write;
105 sp_object_class->release = sp_group_release;
106 sp_object_class->build = sp_group_build;
108 item_class->bbox = sp_group_bbox;
109 item_class->print = sp_group_print;
110 item_class->description = sp_group_description;
111 item_class->show = sp_group_show;
112 item_class->hide = sp_group_hide;
113 item_class->snappoints = sp_group_snappoints;
114 }
116 static void
117 sp_group_init (SPGroup *group)
118 {
119 group->_layer_mode = SPGroup::GROUP;
120 group->group = new CGroup(group);
121 new (&group->_display_modes) std::map<unsigned int, SPGroup::LayerMode>();
122 }
124 static void sp_group_build(SPObject *object, SPDocument *document, Inkscape::XML::Node *repr)
125 {
126 sp_object_read_attr(object, "inkscape:groupmode");
128 if (((SPObjectClass *)parent_class)->build) {
129 ((SPObjectClass *)parent_class)->build(object, document, repr);
130 }
131 }
133 static void sp_group_release(SPObject *object) {
134 if ( SP_GROUP(object)->_layer_mode == SPGroup::LAYER ) {
135 sp_document_remove_resource(SP_OBJECT_DOCUMENT(object), "layer", object);
136 }
137 if (((SPObjectClass *)parent_class)->release) {
138 ((SPObjectClass *)parent_class)->release(object);
139 }
140 }
142 static void
143 sp_group_dispose(GObject *object)
144 {
145 SP_GROUP(object)->_display_modes.~map();
146 delete SP_GROUP(object)->group;
147 }
149 static void
150 sp_group_child_added (SPObject *object, Inkscape::XML::Node *child, Inkscape::XML::Node *ref)
151 {
152 SPItem *item;
154 item = SP_ITEM (object);
156 if (((SPObjectClass *) (parent_class))->child_added)
157 (* ((SPObjectClass *) (parent_class))->child_added) (object, child, ref);
159 SP_GROUP(object)->group->onChildAdded(child);
160 }
162 /* fixme: hide (Lauris) */
164 static void
165 sp_group_remove_child (SPObject * object, Inkscape::XML::Node * child)
166 {
167 if (((SPObjectClass *) (parent_class))->remove_child)
168 (* ((SPObjectClass *) (parent_class))->remove_child) (object, child);
170 SP_GROUP(object)->group->onChildRemoved(child);
171 }
173 static void
174 sp_group_order_changed (SPObject *object, Inkscape::XML::Node *child, Inkscape::XML::Node *old_ref, Inkscape::XML::Node *new_ref)
175 {
176 if (((SPObjectClass *) (parent_class))->order_changed)
177 (* ((SPObjectClass *) (parent_class))->order_changed) (object, child, old_ref, new_ref);
179 SP_GROUP(object)->group->onOrderChanged(child, old_ref, new_ref);
180 }
182 static void
183 sp_group_update (SPObject *object, SPCtx *ctx, unsigned int flags)
184 {
185 if (((SPObjectClass *) (parent_class))->update)
186 ((SPObjectClass *) (parent_class))->update (object, ctx, flags);
188 SP_GROUP(object)->group->onUpdate(ctx, flags);
189 }
191 static void
192 sp_group_modified (SPObject *object, guint flags)
193 {
194 SP_GROUP(object)->group->onModified(flags);
195 }
197 static Inkscape::XML::Node *
198 sp_group_write (SPObject *object, Inkscape::XML::Node *repr, guint flags)
199 {
200 SPGroup *group;
201 SPObject *child;
202 Inkscape::XML::Node *crepr;
204 group = SP_GROUP (object);
206 if (flags & SP_OBJECT_WRITE_BUILD) {
207 GSList *l;
208 if (!repr) repr = sp_repr_new ("svg:g");
209 l = NULL;
210 for (child = sp_object_first_child(object); child != NULL; child = SP_OBJECT_NEXT(child) ) {
211 crepr = child->updateRepr(NULL, flags);
212 if (crepr) l = g_slist_prepend (l, crepr);
213 }
214 while (l) {
215 repr->addChild((Inkscape::XML::Node *) l->data, NULL);
216 Inkscape::GC::release((Inkscape::XML::Node *) l->data);
217 l = g_slist_remove (l, l->data);
218 }
219 } else {
220 for (child = sp_object_first_child(object) ; child != NULL; child = SP_OBJECT_NEXT(child) ) {
221 child->updateRepr(flags);
222 }
223 }
225 if ( flags & SP_OBJECT_WRITE_EXT ) {
226 const char *value;
227 if ( group->_layer_mode == SPGroup::LAYER ) {
228 value = "layer";
229 } else if ( flags & SP_OBJECT_WRITE_ALL ) {
230 value = "group";
231 } else {
232 value = NULL;
233 }
234 repr->setAttribute("inkscape:groupmode", value);
235 }
237 if (((SPObjectClass *) (parent_class))->write)
238 ((SPObjectClass *) (parent_class))->write (object, repr, flags);
240 return repr;
241 }
243 static void
244 sp_group_bbox(SPItem const *item, NRRect *bbox, NR::Matrix const &transform, unsigned const flags)
245 {
246 SP_GROUP(item)->group->calculateBBox(bbox, transform, flags);
247 }
249 static void
250 sp_group_print (SPItem * item, SPPrintContext *ctx)
251 {
252 SP_GROUP(item)->group->onPrint(ctx);
253 }
255 static gchar * sp_group_description (SPItem * item)
256 {
257 return SP_GROUP(item)->group->getDescription();
258 }
260 static void sp_group_set(SPObject *object, unsigned key, char const *value) {
261 SPGroup *group=SP_GROUP(object);
263 switch (key) {
264 case SP_ATTR_INKSCAPE_GROUPMODE: {
265 if ( value && !strcmp(value, "layer") ) {
266 group->setLayerMode(SPGroup::LAYER);
267 } else {
268 group->setLayerMode(SPGroup::GROUP);
269 }
270 } break;
271 default: {
272 if (((SPObjectClass *) (parent_class))->set) {
273 (* ((SPObjectClass *) (parent_class))->set)(object, key, value);
274 }
275 }
276 }
277 }
279 static NRArenaItem *
280 sp_group_show (SPItem *item, NRArena *arena, unsigned int key, unsigned int flags)
281 {
282 return SP_GROUP(item)->group->show(arena, key, flags);
283 }
285 static void
286 sp_group_hide (SPItem *item, unsigned int key)
287 {
288 SP_GROUP(item)->group->hide(key);
289 }
291 static void sp_group_snappoints (SPItem const *item, SnapPointsIter p)
292 {
293 for (SPObject const *o = sp_object_first_child(SP_OBJECT(item));
294 o != NULL;
295 o = SP_OBJECT_NEXT(o))
296 {
297 if (SP_IS_ITEM(o)) {
298 sp_item_snappoints(SP_ITEM(o), p);
299 }
300 }
301 }
304 void
305 sp_item_group_ungroup (SPGroup *group, GSList **children, bool do_done)
306 {
307 g_return_if_fail (group != NULL);
308 g_return_if_fail (SP_IS_GROUP (group));
310 SPDocument *doc = SP_OBJECT_DOCUMENT (group);
311 SPObject *root = SP_DOCUMENT_ROOT (doc);
312 SPObject *defs = SP_OBJECT (SP_ROOT (root)->defs);
314 SPItem *gitem = SP_ITEM (group);
315 Inkscape::XML::Node *grepr = SP_OBJECT_REPR (gitem);
317 g_return_if_fail (!strcmp (grepr->name(), "svg:g") || !strcmp (grepr->name(), "svg:a") || !strcmp (grepr->name(), "svg:switch"));
319 // this converts the gradient/pattern fill/stroke on the group, if any, to userSpaceOnUse
320 sp_item_adjust_paint_recursive (gitem, NR::identity(), NR::identity(), false);
322 SPItem *pitem = SP_ITEM (SP_OBJECT_PARENT (gitem));
323 Inkscape::XML::Node *prepr = SP_OBJECT_REPR (pitem);
325 /* Step 1 - generate lists of children objects */
326 GSList *items = NULL;
327 GSList *objects = NULL;
328 for (SPObject *child = sp_object_first_child(SP_OBJECT(group)) ; child != NULL; child = SP_OBJECT_NEXT(child) ) {
330 if (SP_IS_ITEM (child)) {
332 SPItem *citem = SP_ITEM (child);
334 /* Merging of style */
335 // this converts the gradient/pattern fill/stroke, if any, to userSpaceOnUse; we need to do
336 // it here _before_ the new transform is set, so as to use the pre-transform bbox
337 sp_item_adjust_paint_recursive (citem, NR::identity(), NR::identity(), false);
339 sp_style_merge_from_dying_parent(SP_OBJECT_STYLE(child), SP_OBJECT_STYLE(gitem));
340 /*
341 * fixme: We currently make no allowance for the case where child is cloned
342 * and the group has any style settings.
343 *
344 * (This should never occur with documents created solely with the current
345 * version of inkscape without using the XML editor: we usually apply group
346 * style changes to children rather than to the group itself.)
347 *
348 * If the group has no style settings, then
349 * sp_style_merge_from_dying_parent should be a no-op. Otherwise (i.e. if
350 * we change the child's style to compensate for its parent going away)
351 * then those changes will typically be reflected in any clones of child,
352 * whereas we'd prefer for Ungroup not to affect the visual appearance.
353 *
354 * The only way of preserving styling appearance in general is for child to
355 * be put into a new group -- a somewhat surprising response to an Ungroup
356 * command. We could add a new groupmode:transparent that would mostly
357 * hide the existence of such groups from the user (i.e. editing behaves as
358 * if the transparent group's children weren't in a group), though that's
359 * extra complication & maintenance burden and this case is rare.
360 */
362 child->updateRepr();
364 Inkscape::XML::Node *nrepr = SP_OBJECT_REPR (child)->duplicate();
366 // Merging transform
367 NR::Matrix ctrans;
368 NR::Matrix const g(gitem->transform);
369 if (SP_IS_USE(citem) && sp_use_get_original (SP_USE(citem)) &&
370 SP_OBJECT_PARENT (sp_use_get_original (SP_USE(citem))) == SP_OBJECT(group)) {
371 // make sure a clone's effective transform is the same as was under group
372 ctrans = g.inverse() * citem->transform * g;
373 } else {
374 ctrans = citem->transform * g;
375 }
377 // FIXME: constructing a transform that would fully preserve the appearance of a
378 // textpath if it is ungrouped with its path seems to be impossible in general
379 // case. E.g. if the group was squeezed, to keep the ungrouped textpath squeezed
380 // as well, we'll need to relink it to some "virtual" path which is inversely
381 // stretched relative to the actual path, and then squeeze the textpath back so it
382 // would both fit the actual path _and_ be squeezed as before. It's a bummer.
384 // This is just a way to temporarily remember the transform in repr. When repr is
385 // reattached outside of the group, the transform will be written more properly
386 // (i.e. optimized into the object if the corresponding preference is set)
387 gchar affinestr[80];
388 if (sp_svg_transform_write(affinestr, 79, ctrans)) {
389 nrepr->setAttribute("transform", affinestr);
390 } else {
391 nrepr->setAttribute("transform", NULL);
392 }
394 items = g_slist_prepend (items, nrepr);
396 } else {
397 Inkscape::XML::Node *nrepr = SP_OBJECT_REPR (child)->duplicate();
398 objects = g_slist_prepend (objects, nrepr);
399 }
400 }
402 /* Step 2 - clear group */
403 // remember the position of the group
404 gint pos = SP_OBJECT_REPR(group)->position();
406 // the group is leaving forever, no heir, clones should take note; its children however are going to reemerge
407 SP_OBJECT (group)->deleteObject(true, false);
409 /* Step 3 - add nonitems */
410 if (objects) {
411 Inkscape::XML::Node *last_def = SP_OBJECT_REPR(defs)->lastChild();
412 while (objects) {
413 SP_OBJECT_REPR(defs)->addChild((Inkscape::XML::Node *) objects->data, last_def);
414 Inkscape::GC::release((Inkscape::XML::Node *) objects->data);
415 objects = g_slist_remove (objects, objects->data);
416 }
417 }
419 /* Step 4 - add items */
420 gint const preserve = prefs_get_int_attribute("options.preservetransform", "value", 0);
421 while (items) {
422 Inkscape::XML::Node *repr = (Inkscape::XML::Node *) items->data;
423 // add item
424 prepr->appendChild(repr);
425 // restore position; since the items list was prepended (i.e. reverse), we now add
426 // all children at the same pos, which inverts the order once again
427 repr->setPosition(pos > 0 ? pos : 0);
429 // fill in the children list if non-null
430 SPItem *nitem = (SPItem *) doc->getObjectByRepr(repr);
432 /* Optimize the transform matrix if requested. */
433 // No compensations are required because this is supposed to be a non-transformation visually.
434 if (!preserve) {
435 NR::Matrix (*set_transform)(SPItem *, NR::Matrix const &) = ((SPItemClass *) G_OBJECT_GET_CLASS(nitem))->set_transform;
436 if (set_transform) {
437 sp_item_set_item_transform(nitem, set_transform(nitem, nitem->transform));
438 nitem->updateRepr();
439 }
440 }
442 Inkscape::GC::release(repr);
443 if (children && SP_IS_ITEM (nitem))
444 *children = g_slist_prepend (*children, nitem);
446 items = g_slist_remove (items, items->data);
447 }
449 if (do_done) sp_document_done (doc);
450 }
452 /*
453 * some API for list aspect of SPGroup
454 */
456 GSList *
457 sp_item_group_item_list (SPGroup * group)
458 {
459 GSList *s;
460 SPObject *o;
462 g_return_val_if_fail (group != NULL, NULL);
463 g_return_val_if_fail (SP_IS_GROUP (group), NULL);
465 s = NULL;
467 for ( o = sp_object_first_child(SP_OBJECT(group)) ; o != NULL ; o = SP_OBJECT_NEXT(o) ) {
468 if (SP_IS_ITEM (o)) {
469 s = g_slist_prepend (s, o);
470 }
471 }
473 return g_slist_reverse (s);
474 }
476 SPObject *
477 sp_item_group_get_child_by_name (SPGroup *group, SPObject *ref, const gchar *name)
478 {
479 SPObject *child;
480 child = (ref) ? SP_OBJECT_NEXT(ref) : sp_object_first_child(SP_OBJECT(group));
481 while ( child && strcmp (SP_OBJECT_REPR(child)->name(), name) ) {
482 child = SP_OBJECT_NEXT(child);
483 }
484 return child;
485 }
487 void SPGroup::setLayerMode(LayerMode mode) {
488 if ( _layer_mode != mode ) {
489 if ( mode == LAYER ) {
490 sp_document_add_resource(SP_OBJECT_DOCUMENT(this), "layer", this);
491 } else {
492 sp_document_remove_resource(SP_OBJECT_DOCUMENT(this), "layer", this);
493 }
494 _layer_mode = mode;
495 _updateLayerMode();
496 }
497 }
499 SPGroup::LayerMode SPGroup::layerDisplayMode(unsigned int dkey) const {
500 std::map<unsigned int, LayerMode>::const_iterator iter;
501 iter = _display_modes.find(dkey);
502 if ( iter != _display_modes.end() ) {
503 return (*iter).second;
504 } else {
505 return GROUP;
506 }
507 }
509 void SPGroup::setLayerDisplayMode(unsigned int dkey, SPGroup::LayerMode mode) {
510 if ( layerDisplayMode(dkey) != mode ) {
511 _display_modes[dkey] = mode;
512 _updateLayerMode(dkey);
513 }
514 }
516 void SPGroup::_updateLayerMode(unsigned int display_key) {
517 SPItemView *view;
518 for ( view = this->display ; view ; view = view->next ) {
519 if ( !display_key || view->key == display_key ) {
520 NRArenaGroup *arena_group=NR_ARENA_GROUP(view->arenaitem);
521 if (arena_group) {
522 nr_arena_group_set_transparent(arena_group, effectiveLayerMode(view->key) == SPGroup::LAYER);
523 }
524 }
525 }
526 }
528 void SPGroup::translateChildItems(NR::translate const &tr)
529 {
530 if (this->hasChildren())
531 {
532 SPObject *o = NULL;
533 for (o = sp_object_first_child(SP_OBJECT(this)) ; o != NULL ; o = SP_OBJECT_NEXT(o) ) {
534 if (SP_IS_ITEM (o)) {
535 sp_item_move_rel(static_cast<SPItem *>(o), tr);
536 }
537 }
538 }
539 }
541 CGroup::CGroup(SPGroup *group) {
542 _group = group;
543 }
545 CGroup::~CGroup() {
546 }
548 void CGroup::onChildAdded(Inkscape::XML::Node *child) {
549 SPObject *last_child = _group->lastChild();
550 if (last_child && SP_OBJECT_REPR(last_child) == child) {
551 // optimization for the common special case where the child is being added at the end
552 SPObject *ochild = last_child;
553 if ( SP_IS_ITEM(ochild) ) {
554 /* TODO: this should be moved into SPItem somehow */
555 SPItemView *v;
556 NRArenaItem *ac;
558 for (v = _group->display; v != NULL; v = v->next) {
559 ac = sp_item_invoke_show (SP_ITEM (ochild), NR_ARENA_ITEM_ARENA (v->arenaitem), v->key, v->flags);
561 if (ac) {
562 nr_arena_item_append_child (v->arenaitem, ac);
563 nr_arena_item_unref (ac);
564 }
565 }
566 }
567 } else { // general case
568 SPObject *ochild = sp_object_get_child_by_repr(_group, child);
569 if ( ochild && SP_IS_ITEM(ochild) ) {
570 /* TODO: this should be moved into SPItem somehow */
571 SPItemView *v;
572 NRArenaItem *ac;
574 unsigned position = sp_item_pos_in_parent(SP_ITEM(ochild));
576 for (v = _group->display; v != NULL; v = v->next) {
577 ac = sp_item_invoke_show (SP_ITEM (ochild), NR_ARENA_ITEM_ARENA (v->arenaitem), v->key, v->flags);
579 if (ac) {
580 nr_arena_item_add_child (v->arenaitem, ac, NULL);
581 nr_arena_item_set_order (ac, position);
582 nr_arena_item_unref (ac);
583 }
584 }
585 }
586 }
588 _group->requestModified(SP_OBJECT_MODIFIED_FLAG);
589 }
591 void CGroup::onChildRemoved(Inkscape::XML::Node */*child*/) {
592 _group->requestModified(SP_OBJECT_MODIFIED_FLAG);
593 }
595 void CGroup::onUpdate(SPCtx *ctx, unsigned int flags) {
596 SPObject *child;
597 SPItemCtx *ictx, cctx;
599 ictx = (SPItemCtx *) ctx;
600 cctx = *ictx;
602 if (flags & SP_OBJECT_MODIFIED_FLAG) flags |= SP_OBJECT_PARENT_MODIFIED_FLAG;
603 flags &= SP_OBJECT_MODIFIED_CASCADE;
605 GSList *l = g_slist_reverse(_childList(true, ActionUpdate));
606 while (l) {
607 child = SP_OBJECT (l->data);
608 l = g_slist_remove (l, child);
609 if (flags || (child->uflags & (SP_OBJECT_MODIFIED_FLAG | SP_OBJECT_CHILD_MODIFIED_FLAG))) {
610 if (SP_IS_ITEM (child)) {
611 SPItem const &chi = *SP_ITEM(child);
612 cctx.i2doc = chi.transform * ictx->i2doc;
613 cctx.i2vp = chi.transform * ictx->i2vp;
614 child->updateDisplay((SPCtx *)&cctx, flags);
615 } else {
616 child->updateDisplay(ctx, flags);
617 }
618 }
619 g_object_unref (G_OBJECT (child));
620 }
621 }
623 GSList *CGroup::_childList(bool add_ref, Action) {
624 GSList *l = NULL;
625 for (SPObject *child = sp_object_first_child(_group) ; child != NULL ; child = SP_OBJECT_NEXT(child) ) {
626 if (add_ref)
627 g_object_ref (G_OBJECT (child));
629 l = g_slist_prepend (l, child);
630 }
631 return l;
632 }
634 void CGroup::onModified(guint flags) {
635 SPObject *child;
637 if (flags & SP_OBJECT_MODIFIED_FLAG) flags |= SP_OBJECT_PARENT_MODIFIED_FLAG;
638 flags &= SP_OBJECT_MODIFIED_CASCADE;
640 GSList *l = g_slist_reverse(_childList(true));
641 while (l) {
642 child = SP_OBJECT (l->data);
643 l = g_slist_remove (l, child);
644 if (flags || (child->mflags & (SP_OBJECT_MODIFIED_FLAG | SP_OBJECT_CHILD_MODIFIED_FLAG))) {
645 child->emitModified(flags);
646 }
647 g_object_unref (G_OBJECT (child));
648 }
649 }
651 void CGroup::calculateBBox(NRRect *bbox, NR::Matrix const &transform, unsigned const flags) {
652 GSList *l = _childList(false, ActionBBox);
653 while (l) {
654 SPObject *o = SP_OBJECT (l->data);
655 if (SP_IS_ITEM(o)) {
656 SPItem *child = SP_ITEM(o);
657 NR::Matrix const ct(child->transform * transform);
658 sp_item_invoke_bbox_full(child, bbox, ct, flags, FALSE);
659 }
660 l = g_slist_remove (l, o);
661 }
662 }
664 void CGroup::onPrint(SPPrintContext *ctx) {
665 GSList *l = g_slist_reverse(_childList(false));
666 while (l) {
667 SPObject *o = SP_OBJECT (l->data);
668 if (SP_IS_ITEM(o)) {
669 sp_item_invoke_print (SP_ITEM (o), ctx);
670 }
671 l = g_slist_remove (l, o);
672 }
673 }
675 gint CGroup::getItemCount() {
676 gint len = 0;
677 for (SPObject *o = sp_object_first_child(SP_OBJECT(_group)) ; o != NULL ; o = SP_OBJECT_NEXT(o) ) {
678 if (SP_IS_ITEM(o)) {
679 len++;
680 }
681 }
683 return len;
684 }
686 gchar *CGroup::getDescription() {
687 gint len = getItemCount();
688 return g_strdup_printf(
689 ngettext("<b>Group</b> of <b>%d</b> object",
690 "<b>Group</b> of <b>%d</b> objects",
691 len), len);
692 }
694 NRArenaItem *CGroup::show (NRArena *arena, unsigned int key, unsigned int flags) {
695 NRArenaItem *ai;
697 ai = NRArenaGroup::create(arena);
698 nr_arena_group_set_transparent(NR_ARENA_GROUP (ai),
699 _group->effectiveLayerMode(key) ==
700 SPGroup::LAYER);
702 _showChildren(arena, ai, key, flags);
703 return ai;
704 }
706 void CGroup::_showChildren (NRArena *arena, NRArenaItem *ai, unsigned int key, unsigned int flags) {
707 NRArenaItem *ac = NULL;
708 NRArenaItem *ar = NULL;
709 SPItem * child = NULL;
710 GSList *l = g_slist_reverse(_childList(false, ActionShow));
711 while (l) {
712 SPObject *o = SP_OBJECT (l->data);
713 if (SP_IS_ITEM (o)) {
714 child = SP_ITEM (o);
715 ac = sp_item_invoke_show (child, arena, key, flags);
716 if (ac) {
717 nr_arena_item_add_child (ai, ac, ar);
718 ar = ac;
719 nr_arena_item_unref (ac);
720 }
721 }
722 l = g_slist_remove (l, o);
723 }
724 }
726 void CGroup::hide (unsigned int key) {
727 SPItem * child;
729 GSList *l = g_slist_reverse(_childList(false, ActionShow));
730 while (l) {
731 SPObject *o = SP_OBJECT (l->data);
732 if (SP_IS_ITEM (o)) {
733 child = SP_ITEM (o);
734 sp_item_invoke_hide (child, key);
735 }
736 l = g_slist_remove (l, o);
737 }
739 if (((SPItemClass *) parent_class)->hide)
740 ((SPItemClass *) parent_class)->hide (_group, key);
741 }
743 void CGroup::onOrderChanged (Inkscape::XML::Node *child, Inkscape::XML::Node *, Inkscape::XML::Node *)
744 {
745 SPObject *ochild = sp_object_get_child_by_repr(_group, child);
746 if ( ochild && SP_IS_ITEM(ochild) ) {
747 /* TODO: this should be moved into SPItem somehow */
748 SPItemView *v;
749 unsigned position = sp_item_pos_in_parent(SP_ITEM(ochild));
750 for ( v = SP_ITEM (ochild)->display ; v != NULL ; v = v->next ) {
751 nr_arena_item_set_order (v->arenaitem, position);
752 }
753 }
755 _group->requestModified(SP_OBJECT_MODIFIED_FLAG);
756 }