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 * Johan Engelen <j.b.c.engelen@ewi.utwente.nl>
10 *
11 * Copyright (C) 1999-2006 authors
12 * Copyright (C) 2000-2001 Ximian, Inc.
13 *
14 * Released under GNU GPL, read the file 'COPYING' for more information
15 */
17 #ifdef HAVE_CONFIG_H
18 # include "config.h"
19 #endif
21 #include <glibmm/i18n.h>
23 #include "display/nr-arena-group.h"
24 #include "libnr/nr-matrix-ops.h"
25 #include "libnr/nr-matrix-fns.h"
26 #include "xml/repr.h"
27 #include "svg/svg.h"
28 #include "document.h"
29 #include "style.h"
30 #include "attributes.h"
31 #include "sp-item-transform.h"
32 #include "sp-root.h"
33 #include "sp-use.h"
34 #include "prefs-utils.h"
35 #include "sp-clippath.h"
36 #include "sp-mask.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) {
209 Inkscape::XML::Document *xml_doc = sp_document_repr_doc(SP_OBJECT_DOCUMENT(object));
210 repr = xml_doc->createElement("svg:g");
211 }
212 l = NULL;
213 for (child = sp_object_first_child(object); child != NULL; child = SP_OBJECT_NEXT(child) ) {
214 crepr = child->updateRepr(NULL, flags);
215 if (crepr) l = g_slist_prepend (l, crepr);
216 }
217 while (l) {
218 repr->addChild((Inkscape::XML::Node *) l->data, NULL);
219 Inkscape::GC::release((Inkscape::XML::Node *) l->data);
220 l = g_slist_remove (l, l->data);
221 }
222 } else {
223 for (child = sp_object_first_child(object) ; child != NULL; child = SP_OBJECT_NEXT(child) ) {
224 child->updateRepr(flags);
225 }
226 }
228 if ( flags & SP_OBJECT_WRITE_EXT ) {
229 const char *value;
230 if ( group->_layer_mode == SPGroup::LAYER ) {
231 value = "layer";
232 } else if ( flags & SP_OBJECT_WRITE_ALL ) {
233 value = "group";
234 } else {
235 value = NULL;
236 }
237 repr->setAttribute("inkscape:groupmode", value);
238 }
240 if (((SPObjectClass *) (parent_class))->write)
241 ((SPObjectClass *) (parent_class))->write (object, repr, flags);
243 return repr;
244 }
246 static void
247 sp_group_bbox(SPItem const *item, NRRect *bbox, NR::Matrix const &transform, unsigned const flags)
248 {
249 SP_GROUP(item)->group->calculateBBox(bbox, transform, flags);
250 }
252 static void
253 sp_group_print (SPItem * item, SPPrintContext *ctx)
254 {
255 SP_GROUP(item)->group->onPrint(ctx);
256 }
258 static gchar * sp_group_description (SPItem * item)
259 {
260 return SP_GROUP(item)->group->getDescription();
261 }
263 static void sp_group_set(SPObject *object, unsigned key, char const *value) {
264 SPGroup *group=SP_GROUP(object);
266 switch (key) {
267 case SP_ATTR_INKSCAPE_GROUPMODE: {
268 if ( value && !strcmp(value, "layer") ) {
269 group->setLayerMode(SPGroup::LAYER);
270 } else {
271 group->setLayerMode(SPGroup::GROUP);
272 }
273 } break;
274 default: {
275 if (((SPObjectClass *) (parent_class))->set) {
276 (* ((SPObjectClass *) (parent_class))->set)(object, key, value);
277 }
278 }
279 }
280 }
282 static NRArenaItem *
283 sp_group_show (SPItem *item, NRArena *arena, unsigned int key, unsigned int flags)
284 {
285 return SP_GROUP(item)->group->show(arena, key, flags);
286 }
288 static void
289 sp_group_hide (SPItem *item, unsigned int key)
290 {
291 SP_GROUP(item)->group->hide(key);
292 }
294 static void sp_group_snappoints (SPItem const *item, SnapPointsIter p)
295 {
296 for (SPObject const *o = sp_object_first_child(SP_OBJECT(item));
297 o != NULL;
298 o = SP_OBJECT_NEXT(o))
299 {
300 if (SP_IS_ITEM(o)) {
301 sp_item_snappoints(SP_ITEM(o), p);
302 }
303 }
304 }
307 void
308 sp_item_group_ungroup (SPGroup *group, GSList **children, bool do_done)
309 {
310 g_return_if_fail (group != NULL);
311 g_return_if_fail (SP_IS_GROUP (group));
313 SPDocument *doc = SP_OBJECT_DOCUMENT (group);
314 SPObject *root = SP_DOCUMENT_ROOT (doc);
315 SPObject *defs = SP_OBJECT (SP_ROOT (root)->defs);
317 SPItem *gitem = SP_ITEM (group);
318 Inkscape::XML::Node *grepr = SP_OBJECT_REPR (gitem);
320 g_return_if_fail (!strcmp (grepr->name(), "svg:g") || !strcmp (grepr->name(), "svg:a") || !strcmp (grepr->name(), "svg:switch"));
322 // this converts the gradient/pattern fill/stroke on the group, if any, to userSpaceOnUse
323 sp_item_adjust_paint_recursive (gitem, NR::identity(), NR::identity(), false);
325 SPItem *pitem = SP_ITEM (SP_OBJECT_PARENT (gitem));
326 Inkscape::XML::Node *prepr = SP_OBJECT_REPR (pitem);
328 /* Step 1 - generate lists of children objects */
329 GSList *items = NULL;
330 GSList *objects = NULL;
331 for (SPObject *child = sp_object_first_child(SP_OBJECT(group)) ; child != NULL; child = SP_OBJECT_NEXT(child) ) {
333 if (SP_IS_ITEM (child)) {
335 SPItem *citem = SP_ITEM (child);
337 /* Merging of style */
338 // this converts the gradient/pattern fill/stroke, if any, to userSpaceOnUse; we need to do
339 // it here _before_ the new transform is set, so as to use the pre-transform bbox
340 sp_item_adjust_paint_recursive (citem, NR::identity(), NR::identity(), false);
342 sp_style_merge_from_dying_parent(SP_OBJECT_STYLE(child), SP_OBJECT_STYLE(gitem));
343 /*
344 * fixme: We currently make no allowance for the case where child is cloned
345 * and the group has any style settings.
346 *
347 * (This should never occur with documents created solely with the current
348 * version of inkscape without using the XML editor: we usually apply group
349 * style changes to children rather than to the group itself.)
350 *
351 * If the group has no style settings, then
352 * sp_style_merge_from_dying_parent should be a no-op. Otherwise (i.e. if
353 * we change the child's style to compensate for its parent going away)
354 * then those changes will typically be reflected in any clones of child,
355 * whereas we'd prefer for Ungroup not to affect the visual appearance.
356 *
357 * The only way of preserving styling appearance in general is for child to
358 * be put into a new group -- a somewhat surprising response to an Ungroup
359 * command. We could add a new groupmode:transparent that would mostly
360 * hide the existence of such groups from the user (i.e. editing behaves as
361 * if the transparent group's children weren't in a group), though that's
362 * extra complication & maintenance burden and this case is rare.
363 */
365 child->updateRepr();
367 Inkscape::XML::Node *nrepr = SP_OBJECT_REPR (child)->duplicate();
369 // Merging transform
370 NR::Matrix ctrans;
371 NR::Matrix const g(gitem->transform);
372 if (SP_IS_USE(citem) && sp_use_get_original (SP_USE(citem)) &&
373 SP_OBJECT_PARENT (sp_use_get_original (SP_USE(citem))) == SP_OBJECT(group)) {
374 // make sure a clone's effective transform is the same as was under group
375 ctrans = g.inverse() * citem->transform * g;
376 } else {
377 ctrans = citem->transform * g;
378 }
380 // FIXME: constructing a transform that would fully preserve the appearance of a
381 // textpath if it is ungrouped with its path seems to be impossible in general
382 // case. E.g. if the group was squeezed, to keep the ungrouped textpath squeezed
383 // as well, we'll need to relink it to some "virtual" path which is inversely
384 // stretched relative to the actual path, and then squeeze the textpath back so it
385 // would both fit the actual path _and_ be squeezed as before. It's a bummer.
387 // This is just a way to temporarily remember the transform in repr. When repr is
388 // reattached outside of the group, the transform will be written more properly
389 // (i.e. optimized into the object if the corresponding preference is set)
390 gchar *affinestr=sp_svg_transform_write(ctrans);
391 nrepr->setAttribute("transform", affinestr);
392 g_free(affinestr);
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 while (items) {
421 Inkscape::XML::Node *repr = (Inkscape::XML::Node *) items->data;
422 // add item
423 prepr->appendChild(repr);
424 // restore position; since the items list was prepended (i.e. reverse), we now add
425 // all children at the same pos, which inverts the order once again
426 repr->setPosition(pos > 0 ? pos : 0);
428 // fill in the children list if non-null
429 SPItem *item = (SPItem *) doc->getObjectByRepr(repr);
431 sp_item_write_transform(item, repr, item->transform, NULL, false);
433 Inkscape::GC::release(repr);
434 if (children && SP_IS_ITEM (item))
435 *children = g_slist_prepend (*children, item);
437 items = g_slist_remove (items, items->data);
438 }
440 if (do_done)
441 sp_document_done (doc, SP_VERB_NONE, _("Ungroup"));
442 }
444 /*
445 * some API for list aspect of SPGroup
446 */
448 GSList *
449 sp_item_group_item_list (SPGroup * group)
450 {
451 GSList *s;
452 SPObject *o;
454 g_return_val_if_fail (group != NULL, NULL);
455 g_return_val_if_fail (SP_IS_GROUP (group), NULL);
457 s = NULL;
459 for ( o = sp_object_first_child(SP_OBJECT(group)) ; o != NULL ; o = SP_OBJECT_NEXT(o) ) {
460 if (SP_IS_ITEM (o)) {
461 s = g_slist_prepend (s, o);
462 }
463 }
465 return g_slist_reverse (s);
466 }
468 SPObject *
469 sp_item_group_get_child_by_name (SPGroup *group, SPObject *ref, const gchar *name)
470 {
471 SPObject *child;
472 child = (ref) ? SP_OBJECT_NEXT(ref) : sp_object_first_child(SP_OBJECT(group));
473 while ( child && strcmp (SP_OBJECT_REPR(child)->name(), name) ) {
474 child = SP_OBJECT_NEXT(child);
475 }
476 return child;
477 }
479 void SPGroup::setLayerMode(LayerMode mode) {
480 if ( _layer_mode != mode ) {
481 if ( mode == LAYER ) {
482 sp_document_add_resource(SP_OBJECT_DOCUMENT(this), "layer", this);
483 } else {
484 sp_document_remove_resource(SP_OBJECT_DOCUMENT(this), "layer", this);
485 }
486 _layer_mode = mode;
487 _updateLayerMode();
488 }
489 }
491 SPGroup::LayerMode SPGroup::layerDisplayMode(unsigned int dkey) const {
492 std::map<unsigned int, LayerMode>::const_iterator iter;
493 iter = _display_modes.find(dkey);
494 if ( iter != _display_modes.end() ) {
495 return (*iter).second;
496 } else {
497 return GROUP;
498 }
499 }
501 void SPGroup::setLayerDisplayMode(unsigned int dkey, SPGroup::LayerMode mode) {
502 if ( layerDisplayMode(dkey) != mode ) {
503 _display_modes[dkey] = mode;
504 _updateLayerMode(dkey);
505 }
506 }
508 void SPGroup::_updateLayerMode(unsigned int display_key) {
509 SPItemView *view;
510 for ( view = this->display ; view ; view = view->next ) {
511 if ( !display_key || view->key == display_key ) {
512 NRArenaGroup *arena_group=NR_ARENA_GROUP(view->arenaitem);
513 if (arena_group) {
514 nr_arena_group_set_transparent(arena_group, effectiveLayerMode(view->key) == SPGroup::LAYER);
515 }
516 }
517 }
518 }
520 void SPGroup::translateChildItems(NR::translate const &tr)
521 {
522 if (this->hasChildren())
523 {
524 SPObject *o = NULL;
525 for (o = sp_object_first_child(SP_OBJECT(this)) ; o != NULL ; o = SP_OBJECT_NEXT(o) ) {
526 if (SP_IS_ITEM (o)) {
527 sp_item_move_rel(static_cast<SPItem *>(o), tr);
528 }
529 }
530 }
531 }
533 CGroup::CGroup(SPGroup *group) {
534 _group = group;
535 }
537 CGroup::~CGroup() {
538 }
540 void CGroup::onChildAdded(Inkscape::XML::Node *child) {
541 SPObject *last_child = _group->lastChild();
542 if (last_child && SP_OBJECT_REPR(last_child) == child) {
543 // optimization for the common special case where the child is being added at the end
544 SPObject *ochild = last_child;
545 if ( SP_IS_ITEM(ochild) ) {
546 /* TODO: this should be moved into SPItem somehow */
547 SPItemView *v;
548 NRArenaItem *ac;
550 for (v = _group->display; v != NULL; v = v->next) {
551 ac = sp_item_invoke_show (SP_ITEM (ochild), NR_ARENA_ITEM_ARENA (v->arenaitem), v->key, v->flags);
553 if (ac) {
554 nr_arena_item_append_child (v->arenaitem, ac);
555 nr_arena_item_unref (ac);
556 }
557 }
558 }
559 } else { // general case
560 SPObject *ochild = sp_object_get_child_by_repr(_group, child);
561 if ( ochild && SP_IS_ITEM(ochild) ) {
562 /* TODO: this should be moved into SPItem somehow */
563 SPItemView *v;
564 NRArenaItem *ac;
566 unsigned position = sp_item_pos_in_parent(SP_ITEM(ochild));
568 for (v = _group->display; v != NULL; v = v->next) {
569 ac = sp_item_invoke_show (SP_ITEM (ochild), NR_ARENA_ITEM_ARENA (v->arenaitem), v->key, v->flags);
571 if (ac) {
572 nr_arena_item_add_child (v->arenaitem, ac, NULL);
573 nr_arena_item_set_order (ac, position);
574 nr_arena_item_unref (ac);
575 }
576 }
577 }
578 }
580 _group->requestModified(SP_OBJECT_MODIFIED_FLAG);
581 }
583 void CGroup::onChildRemoved(Inkscape::XML::Node */*child*/) {
584 _group->requestModified(SP_OBJECT_MODIFIED_FLAG);
585 }
587 void CGroup::onUpdate(SPCtx *ctx, unsigned int flags) {
588 SPItemCtx *ictx, cctx;
590 ictx = (SPItemCtx *) ctx;
591 cctx = *ictx;
593 if (flags & SP_OBJECT_MODIFIED_FLAG) {
594 flags |= SP_OBJECT_PARENT_MODIFIED_FLAG;
595 }
597 flags &= SP_OBJECT_MODIFIED_CASCADE;
599 if (flags & SP_OBJECT_STYLE_MODIFIED_FLAG) {
600 SPObject *object = SP_OBJECT(_group);
601 for (SPItemView *v = SP_ITEM(_group)->display; v != NULL; v = v->next) {
602 nr_arena_group_set_style(NR_ARENA_GROUP(v->arenaitem), SP_OBJECT_STYLE(object));
603 }
604 }
606 GSList *l = g_slist_reverse(_group->childList(true, SPObject::ActionUpdate));
607 while (l) {
608 SPObject *child = SP_OBJECT (l->data);
609 l = g_slist_remove (l, child);
610 if (flags || (child->uflags & (SP_OBJECT_MODIFIED_FLAG | SP_OBJECT_CHILD_MODIFIED_FLAG))) {
611 if (SP_IS_ITEM (child)) {
612 SPItem const &chi = *SP_ITEM(child);
613 cctx.i2doc = chi.transform * ictx->i2doc;
614 cctx.i2vp = chi.transform * ictx->i2vp;
615 child->updateDisplay((SPCtx *)&cctx, flags);
616 } else {
617 child->updateDisplay(ctx, flags);
618 }
619 }
620 g_object_unref (G_OBJECT (child));
621 }
622 }
624 void CGroup::onModified(guint flags) {
625 SPObject *child;
627 if (flags & SP_OBJECT_MODIFIED_FLAG) flags |= SP_OBJECT_PARENT_MODIFIED_FLAG;
628 flags &= SP_OBJECT_MODIFIED_CASCADE;
630 if (flags & SP_OBJECT_STYLE_MODIFIED_FLAG) {
631 SPObject *object = SP_OBJECT(_group);
632 for (SPItemView *v = SP_ITEM(_group)->display; v != NULL; v = v->next) {
633 nr_arena_group_set_style(NR_ARENA_GROUP(v->arenaitem), SP_OBJECT_STYLE(object));
634 }
635 }
637 GSList *l = g_slist_reverse(_group->childList(true));
638 while (l) {
639 child = SP_OBJECT (l->data);
640 l = g_slist_remove (l, child);
641 if (flags || (child->mflags & (SP_OBJECT_MODIFIED_FLAG | SP_OBJECT_CHILD_MODIFIED_FLAG))) {
642 child->emitModified(flags);
643 }
644 g_object_unref (G_OBJECT (child));
645 }
646 }
648 void CGroup::calculateBBox(NRRect *bbox, NR::Matrix const &transform, unsigned const flags) {
649 GSList *l = _group->childList(false, SPObject::ActionBBox);
650 while (l) {
651 SPObject *o = SP_OBJECT (l->data);
652 if (SP_IS_ITEM(o)) {
653 SPItem *child = SP_ITEM(o);
654 NR::Matrix const ct(child->transform * transform);
655 sp_item_invoke_bbox_full(child, bbox, ct, flags, FALSE);
656 }
657 l = g_slist_remove (l, o);
658 }
659 }
661 void CGroup::onPrint(SPPrintContext *ctx) {
662 GSList *l = g_slist_reverse(_group->childList(false));
663 while (l) {
664 SPObject *o = SP_OBJECT (l->data);
665 if (SP_IS_ITEM(o)) {
666 sp_item_invoke_print (SP_ITEM (o), ctx);
667 }
668 l = g_slist_remove (l, o);
669 }
670 }
672 gint CGroup::getItemCount() {
673 gint len = 0;
674 for (SPObject *o = sp_object_first_child(SP_OBJECT(_group)) ; o != NULL ; o = SP_OBJECT_NEXT(o) ) {
675 if (SP_IS_ITEM(o)) {
676 len++;
677 }
678 }
680 return len;
681 }
683 gchar *CGroup::getDescription() {
684 gint len = getItemCount();
685 return g_strdup_printf(
686 ngettext("<b>Group</b> of <b>%d</b> object",
687 "<b>Group</b> of <b>%d</b> objects",
688 len), len);
689 }
691 NRArenaItem *CGroup::show (NRArena *arena, unsigned int key, unsigned int flags) {
692 NRArenaItem *ai;
693 SPObject *object = SP_OBJECT(_group);
695 ai = NRArenaGroup::create(arena);
697 nr_arena_group_set_transparent(NR_ARENA_GROUP (ai),
698 _group->effectiveLayerMode(key) ==
699 SPGroup::LAYER);
700 nr_arena_group_set_style(NR_ARENA_GROUP(ai), SP_OBJECT_STYLE(object));
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(_group->childList(false, SPObject::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(_group->childList(false, SPObject::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 }
758 /*
759 Local Variables:
760 mode:c++
761 c-file-style:"stroustrup"
762 c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
763 indent-tabs-mode:nil
764 fill-column:99
765 End:
766 */
767 // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4 :