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[80];
391 if (sp_svg_transform_write(affinestr, 79, ctrans)) {
392 nrepr->setAttribute("transform", affinestr);
393 } else {
394 nrepr->setAttribute("transform", NULL);
395 }
397 items = g_slist_prepend (items, nrepr);
399 } else {
400 Inkscape::XML::Node *nrepr = SP_OBJECT_REPR (child)->duplicate();
401 objects = g_slist_prepend (objects, nrepr);
402 }
403 }
405 /* Step 2 - clear group */
406 // remember the position of the group
407 gint pos = SP_OBJECT_REPR(group)->position();
409 // the group is leaving forever, no heir, clones should take note; its children however are going to reemerge
410 SP_OBJECT (group)->deleteObject(true, false);
412 /* Step 3 - add nonitems */
413 if (objects) {
414 Inkscape::XML::Node *last_def = SP_OBJECT_REPR(defs)->lastChild();
415 while (objects) {
416 SP_OBJECT_REPR(defs)->addChild((Inkscape::XML::Node *) objects->data, last_def);
417 Inkscape::GC::release((Inkscape::XML::Node *) objects->data);
418 objects = g_slist_remove (objects, objects->data);
419 }
420 }
422 /* Step 4 - add items */
423 gint const preserve = prefs_get_int_attribute("options.preservetransform", "value", 0);
424 while (items) {
425 Inkscape::XML::Node *repr = (Inkscape::XML::Node *) items->data;
426 // add item
427 prepr->appendChild(repr);
428 // restore position; since the items list was prepended (i.e. reverse), we now add
429 // all children at the same pos, which inverts the order once again
430 repr->setPosition(pos > 0 ? pos : 0);
432 // fill in the children list if non-null
433 SPItem *item = (SPItem *) doc->getObjectByRepr(repr);
435 sp_item_write_transform(item, repr, item->transform, NULL, false);
437 Inkscape::GC::release(repr);
438 if (children && SP_IS_ITEM (item))
439 *children = g_slist_prepend (*children, item);
441 items = g_slist_remove (items, items->data);
442 }
444 if (do_done)
445 sp_document_done (doc, SP_VERB_NONE, _("Ungroup"));
446 }
448 /*
449 * some API for list aspect of SPGroup
450 */
452 GSList *
453 sp_item_group_item_list (SPGroup * group)
454 {
455 GSList *s;
456 SPObject *o;
458 g_return_val_if_fail (group != NULL, NULL);
459 g_return_val_if_fail (SP_IS_GROUP (group), NULL);
461 s = NULL;
463 for ( o = sp_object_first_child(SP_OBJECT(group)) ; o != NULL ; o = SP_OBJECT_NEXT(o) ) {
464 if (SP_IS_ITEM (o)) {
465 s = g_slist_prepend (s, o);
466 }
467 }
469 return g_slist_reverse (s);
470 }
472 SPObject *
473 sp_item_group_get_child_by_name (SPGroup *group, SPObject *ref, const gchar *name)
474 {
475 SPObject *child;
476 child = (ref) ? SP_OBJECT_NEXT(ref) : sp_object_first_child(SP_OBJECT(group));
477 while ( child && strcmp (SP_OBJECT_REPR(child)->name(), name) ) {
478 child = SP_OBJECT_NEXT(child);
479 }
480 return child;
481 }
483 void SPGroup::setLayerMode(LayerMode mode) {
484 if ( _layer_mode != mode ) {
485 if ( mode == LAYER ) {
486 sp_document_add_resource(SP_OBJECT_DOCUMENT(this), "layer", this);
487 } else {
488 sp_document_remove_resource(SP_OBJECT_DOCUMENT(this), "layer", this);
489 }
490 _layer_mode = mode;
491 _updateLayerMode();
492 }
493 }
495 SPGroup::LayerMode SPGroup::layerDisplayMode(unsigned int dkey) const {
496 std::map<unsigned int, LayerMode>::const_iterator iter;
497 iter = _display_modes.find(dkey);
498 if ( iter != _display_modes.end() ) {
499 return (*iter).second;
500 } else {
501 return GROUP;
502 }
503 }
505 void SPGroup::setLayerDisplayMode(unsigned int dkey, SPGroup::LayerMode mode) {
506 if ( layerDisplayMode(dkey) != mode ) {
507 _display_modes[dkey] = mode;
508 _updateLayerMode(dkey);
509 }
510 }
512 void SPGroup::_updateLayerMode(unsigned int display_key) {
513 SPItemView *view;
514 for ( view = this->display ; view ; view = view->next ) {
515 if ( !display_key || view->key == display_key ) {
516 NRArenaGroup *arena_group=NR_ARENA_GROUP(view->arenaitem);
517 if (arena_group) {
518 nr_arena_group_set_transparent(arena_group, effectiveLayerMode(view->key) == SPGroup::LAYER);
519 }
520 }
521 }
522 }
524 void SPGroup::translateChildItems(NR::translate const &tr)
525 {
526 if (this->hasChildren())
527 {
528 SPObject *o = NULL;
529 for (o = sp_object_first_child(SP_OBJECT(this)) ; o != NULL ; o = SP_OBJECT_NEXT(o) ) {
530 if (SP_IS_ITEM (o)) {
531 sp_item_move_rel(static_cast<SPItem *>(o), tr);
532 }
533 }
534 }
535 }
537 CGroup::CGroup(SPGroup *group) {
538 _group = group;
539 }
541 CGroup::~CGroup() {
542 }
544 void CGroup::onChildAdded(Inkscape::XML::Node *child) {
545 SPObject *last_child = _group->lastChild();
546 if (last_child && SP_OBJECT_REPR(last_child) == child) {
547 // optimization for the common special case where the child is being added at the end
548 SPObject *ochild = last_child;
549 if ( SP_IS_ITEM(ochild) ) {
550 /* TODO: this should be moved into SPItem somehow */
551 SPItemView *v;
552 NRArenaItem *ac;
554 for (v = _group->display; v != NULL; v = v->next) {
555 ac = sp_item_invoke_show (SP_ITEM (ochild), NR_ARENA_ITEM_ARENA (v->arenaitem), v->key, v->flags);
557 if (ac) {
558 nr_arena_item_append_child (v->arenaitem, ac);
559 nr_arena_item_unref (ac);
560 }
561 }
562 }
563 } else { // general case
564 SPObject *ochild = sp_object_get_child_by_repr(_group, child);
565 if ( ochild && SP_IS_ITEM(ochild) ) {
566 /* TODO: this should be moved into SPItem somehow */
567 SPItemView *v;
568 NRArenaItem *ac;
570 unsigned position = sp_item_pos_in_parent(SP_ITEM(ochild));
572 for (v = _group->display; v != NULL; v = v->next) {
573 ac = sp_item_invoke_show (SP_ITEM (ochild), NR_ARENA_ITEM_ARENA (v->arenaitem), v->key, v->flags);
575 if (ac) {
576 nr_arena_item_add_child (v->arenaitem, ac, NULL);
577 nr_arena_item_set_order (ac, position);
578 nr_arena_item_unref (ac);
579 }
580 }
581 }
582 }
584 _group->requestModified(SP_OBJECT_MODIFIED_FLAG);
585 }
587 void CGroup::onChildRemoved(Inkscape::XML::Node */*child*/) {
588 _group->requestModified(SP_OBJECT_MODIFIED_FLAG);
589 }
591 void CGroup::onUpdate(SPCtx *ctx, unsigned int flags) {
592 SPItemCtx *ictx, cctx;
594 ictx = (SPItemCtx *) ctx;
595 cctx = *ictx;
597 if (flags & SP_OBJECT_MODIFIED_FLAG) {
598 flags |= SP_OBJECT_PARENT_MODIFIED_FLAG;
599 }
601 flags &= SP_OBJECT_MODIFIED_CASCADE;
603 if (flags & SP_OBJECT_STYLE_MODIFIED_FLAG) {
604 SPObject *object = SP_OBJECT(_group);
605 for (SPItemView *v = SP_ITEM(_group)->display; v != NULL; v = v->next) {
606 nr_arena_group_set_style(NR_ARENA_GROUP(v->arenaitem), SP_OBJECT_STYLE(object));
607 }
608 }
610 GSList *l = g_slist_reverse(_group->childList(true, SPObject::ActionUpdate));
611 while (l) {
612 SPObject *child = SP_OBJECT (l->data);
613 l = g_slist_remove (l, child);
614 if (flags || (child->uflags & (SP_OBJECT_MODIFIED_FLAG | SP_OBJECT_CHILD_MODIFIED_FLAG))) {
615 if (SP_IS_ITEM (child)) {
616 SPItem const &chi = *SP_ITEM(child);
617 cctx.i2doc = chi.transform * ictx->i2doc;
618 cctx.i2vp = chi.transform * ictx->i2vp;
619 child->updateDisplay((SPCtx *)&cctx, flags);
620 } else {
621 child->updateDisplay(ctx, flags);
622 }
623 }
624 g_object_unref (G_OBJECT (child));
625 }
626 }
628 void CGroup::onModified(guint flags) {
629 SPObject *child;
631 if (flags & SP_OBJECT_MODIFIED_FLAG) flags |= SP_OBJECT_PARENT_MODIFIED_FLAG;
632 flags &= SP_OBJECT_MODIFIED_CASCADE;
634 if (flags & SP_OBJECT_STYLE_MODIFIED_FLAG) {
635 SPObject *object = SP_OBJECT(_group);
636 for (SPItemView *v = SP_ITEM(_group)->display; v != NULL; v = v->next) {
637 nr_arena_group_set_style(NR_ARENA_GROUP(v->arenaitem), SP_OBJECT_STYLE(object));
638 }
639 }
641 GSList *l = g_slist_reverse(_group->childList(true));
642 while (l) {
643 child = SP_OBJECT (l->data);
644 l = g_slist_remove (l, child);
645 if (flags || (child->mflags & (SP_OBJECT_MODIFIED_FLAG | SP_OBJECT_CHILD_MODIFIED_FLAG))) {
646 child->emitModified(flags);
647 }
648 g_object_unref (G_OBJECT (child));
649 }
650 }
652 void CGroup::calculateBBox(NRRect *bbox, NR::Matrix const &transform, unsigned const flags) {
653 GSList *l = _group->childList(false, SPObject::ActionBBox);
654 while (l) {
655 SPObject *o = SP_OBJECT (l->data);
656 if (SP_IS_ITEM(o)) {
657 SPItem *child = SP_ITEM(o);
658 NR::Matrix const ct(child->transform * transform);
659 sp_item_invoke_bbox_full(child, bbox, ct, flags, FALSE);
660 }
661 l = g_slist_remove (l, o);
662 }
663 }
665 void CGroup::onPrint(SPPrintContext *ctx) {
666 GSList *l = g_slist_reverse(_group->childList(false));
667 while (l) {
668 SPObject *o = SP_OBJECT (l->data);
669 if (SP_IS_ITEM(o)) {
670 sp_item_invoke_print (SP_ITEM (o), ctx);
671 }
672 l = g_slist_remove (l, o);
673 }
674 }
676 gint CGroup::getItemCount() {
677 gint len = 0;
678 for (SPObject *o = sp_object_first_child(SP_OBJECT(_group)) ; o != NULL ; o = SP_OBJECT_NEXT(o) ) {
679 if (SP_IS_ITEM(o)) {
680 len++;
681 }
682 }
684 return len;
685 }
687 gchar *CGroup::getDescription() {
688 gint len = getItemCount();
689 return g_strdup_printf(
690 ngettext("<b>Group</b> of <b>%d</b> object",
691 "<b>Group</b> of <b>%d</b> objects",
692 len), len);
693 }
695 NRArenaItem *CGroup::show (NRArena *arena, unsigned int key, unsigned int flags) {
696 NRArenaItem *ai;
697 SPObject *object = SP_OBJECT(_group);
699 ai = NRArenaGroup::create(arena);
701 nr_arena_group_set_transparent(NR_ARENA_GROUP (ai),
702 _group->effectiveLayerMode(key) ==
703 SPGroup::LAYER);
704 nr_arena_group_set_style(NR_ARENA_GROUP(ai), SP_OBJECT_STYLE(object));
706 _showChildren(arena, ai, key, flags);
707 return ai;
708 }
710 void CGroup::_showChildren (NRArena *arena, NRArenaItem *ai, unsigned int key, unsigned int flags) {
711 NRArenaItem *ac = NULL;
712 NRArenaItem *ar = NULL;
713 SPItem * child = NULL;
714 GSList *l = g_slist_reverse(_group->childList(false, SPObject::ActionShow));
715 while (l) {
716 SPObject *o = SP_OBJECT (l->data);
717 if (SP_IS_ITEM (o)) {
718 child = SP_ITEM (o);
719 ac = sp_item_invoke_show (child, arena, key, flags);
720 if (ac) {
721 nr_arena_item_add_child (ai, ac, ar);
722 ar = ac;
723 nr_arena_item_unref (ac);
724 }
725 }
726 l = g_slist_remove (l, o);
727 }
728 }
730 void CGroup::hide (unsigned int key) {
731 SPItem * child;
733 GSList *l = g_slist_reverse(_group->childList(false, SPObject::ActionShow));
734 while (l) {
735 SPObject *o = SP_OBJECT (l->data);
736 if (SP_IS_ITEM (o)) {
737 child = SP_ITEM (o);
738 sp_item_invoke_hide (child, key);
739 }
740 l = g_slist_remove (l, o);
741 }
743 if (((SPItemClass *) parent_class)->hide)
744 ((SPItemClass *) parent_class)->hide (_group, key);
745 }
747 void CGroup::onOrderChanged (Inkscape::XML::Node *child, Inkscape::XML::Node *, Inkscape::XML::Node *)
748 {
749 SPObject *ochild = sp_object_get_child_by_repr(_group, child);
750 if ( ochild && SP_IS_ITEM(ochild) ) {
751 /* TODO: this should be moved into SPItem somehow */
752 SPItemView *v;
753 unsigned position = sp_item_pos_in_parent(SP_ITEM(ochild));
754 for ( v = SP_ITEM (ochild)->display ; v != NULL ; v = v->next ) {
755 nr_arena_item_set_order (v->arenaitem, position);
756 }
757 }
759 _group->requestModified(SP_OBJECT_MODIFIED_FLAG);
760 }
762 /*
763 Local Variables:
764 mode:c++
765 c-file-style:"stroustrup"
766 c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
767 indent-tabs-mode:nil
768 fill-column:99
769 End:
770 */
771 // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4 :