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>
22 #include <cstring>
23 #include <string>
25 #include "display/nr-arena-group.h"
26 #include "display/curve.h"
27 #include "libnr/nr-matrix-ops.h"
28 #include "libnr/nr-matrix-fns.h"
29 #include "xml/repr.h"
30 #include "svg/svg.h"
31 #include "document.h"
32 #include "style.h"
33 #include "attributes.h"
34 #include "sp-item-transform.h"
35 #include "sp-root.h"
36 #include "sp-use.h"
37 #include "prefs-utils.h"
38 #include "sp-clippath.h"
39 #include "sp-mask.h"
40 #include "sp-path.h"
41 #include "box3d.h"
42 #include "persp3d.h"
43 #include "inkscape.h"
44 #include "desktop-handles.h"
45 #include "selection.h"
46 #include "live_effects/lpeobject.h"
47 #include "live_effects/lpeobject-reference.h"
48 #include "sp-title.h"
49 #include "sp-desc.h"
51 static void sp_group_class_init (SPGroupClass *klass);
52 static void sp_group_init (SPGroup *group);
53 static void sp_group_build(SPObject *object, SPDocument *document, Inkscape::XML::Node *repr);
54 static void sp_group_release(SPObject *object);
55 static void sp_group_dispose(GObject *object);
57 static void sp_group_child_added (SPObject * object, Inkscape::XML::Node * child, Inkscape::XML::Node * ref);
58 static void sp_group_remove_child (SPObject * object, Inkscape::XML::Node * child);
59 static void sp_group_order_changed (SPObject * object, Inkscape::XML::Node * child, Inkscape::XML::Node * old_ref, Inkscape::XML::Node * new_ref);
60 static void sp_group_update (SPObject *object, SPCtx *ctx, guint flags);
61 static void sp_group_modified (SPObject *object, guint flags);
62 static Inkscape::XML::Node *sp_group_write (SPObject *object, Inkscape::XML::Document *doc, Inkscape::XML::Node *repr, guint flags);
63 static void sp_group_set(SPObject *object, unsigned key, char const *value);
65 static void sp_group_bbox(SPItem const *item, NRRect *bbox, NR::Matrix const &transform, unsigned const flags);
66 static void sp_group_print (SPItem * item, SPPrintContext *ctx);
67 static gchar * sp_group_description (SPItem * item);
68 static NR::Matrix sp_group_set_transform(SPItem *item, NR::Matrix const &xform);
69 static NRArenaItem *sp_group_show (SPItem *item, NRArena *arena, unsigned int key, unsigned int flags);
70 static void sp_group_hide (SPItem * item, unsigned int key);
71 static void sp_group_snappoints (SPItem const *item, SnapPointsIter p);
73 static void sp_group_update_patheffect(SPLPEItem *lpeitem, bool write);
74 static void sp_group_perform_patheffect(SPGroup *group, SPGroup *topgroup);
76 static SPLPEItemClass * parent_class;
78 GType
79 sp_group_get_type (void)
80 {
81 static GType group_type = 0;
82 if (!group_type) {
83 GTypeInfo group_info = {
84 sizeof (SPGroupClass),
85 NULL, /* base_init */
86 NULL, /* base_finalize */
87 (GClassInitFunc) sp_group_class_init,
88 NULL, /* class_finalize */
89 NULL, /* class_data */
90 sizeof (SPGroup),
91 16, /* n_preallocs */
92 (GInstanceInitFunc) sp_group_init,
93 NULL, /* value_table */
94 };
95 group_type = g_type_register_static (SP_TYPE_LPE_ITEM, "SPGroup", &group_info, (GTypeFlags)0);
96 }
97 return group_type;
98 }
100 static void
101 sp_group_class_init (SPGroupClass *klass)
102 {
103 GObjectClass * object_class;
104 SPObjectClass * sp_object_class;
105 SPItemClass * item_class;
106 SPLPEItemClass * lpe_item_class;
108 object_class = (GObjectClass *) klass;
109 sp_object_class = (SPObjectClass *) klass;
110 item_class = (SPItemClass *) klass;
111 lpe_item_class = (SPLPEItemClass *) klass;
113 parent_class = (SPLPEItemClass *)g_type_class_ref (SP_TYPE_LPE_ITEM);
115 object_class->dispose = sp_group_dispose;
117 sp_object_class->child_added = sp_group_child_added;
118 sp_object_class->remove_child = sp_group_remove_child;
119 sp_object_class->order_changed = sp_group_order_changed;
120 sp_object_class->update = sp_group_update;
121 sp_object_class->modified = sp_group_modified;
122 sp_object_class->set = sp_group_set;
123 sp_object_class->write = sp_group_write;
124 sp_object_class->release = sp_group_release;
125 sp_object_class->build = sp_group_build;
127 item_class->bbox = sp_group_bbox;
128 item_class->print = sp_group_print;
129 item_class->description = sp_group_description;
130 item_class->set_transform = sp_group_set_transform;
131 item_class->show = sp_group_show;
132 item_class->hide = sp_group_hide;
133 item_class->snappoints = sp_group_snappoints;
135 lpe_item_class->update_patheffect = sp_group_update_patheffect;
136 }
138 static void
139 sp_group_init (SPGroup *group)
140 {
141 group->_layer_mode = SPGroup::GROUP;
142 group->group = new CGroup(group);
143 new (&group->_display_modes) std::map<unsigned int, SPGroup::LayerMode>();
144 }
146 static void sp_group_build(SPObject *object, SPDocument *document, Inkscape::XML::Node *repr)
147 {
148 sp_object_read_attr(object, "inkscape:groupmode");
150 if (((SPObjectClass *)parent_class)->build) {
151 ((SPObjectClass *)parent_class)->build(object, document, repr);
152 }
153 }
155 static void sp_group_release(SPObject *object) {
156 if ( SP_GROUP(object)->_layer_mode == SPGroup::LAYER ) {
157 sp_document_remove_resource(SP_OBJECT_DOCUMENT(object), "layer", object);
158 }
159 if (((SPObjectClass *)parent_class)->release) {
160 ((SPObjectClass *)parent_class)->release(object);
161 }
162 }
164 static void
165 sp_group_dispose(GObject *object)
166 {
167 SP_GROUP(object)->_display_modes.~map();
168 delete SP_GROUP(object)->group;
169 }
171 static void
172 sp_group_child_added (SPObject *object, Inkscape::XML::Node *child, Inkscape::XML::Node *ref)
173 {
174 SPItem *item;
176 item = SP_ITEM (object);
178 if (((SPObjectClass *) (parent_class))->child_added)
179 (* ((SPObjectClass *) (parent_class))->child_added) (object, child, ref);
181 SP_GROUP(object)->group->onChildAdded(child);
182 }
184 /* fixme: hide (Lauris) */
186 static void
187 sp_group_remove_child (SPObject * object, Inkscape::XML::Node * child)
188 {
189 if (((SPObjectClass *) (parent_class))->remove_child)
190 (* ((SPObjectClass *) (parent_class))->remove_child) (object, child);
192 SP_GROUP(object)->group->onChildRemoved(child);
193 }
195 static void
196 sp_group_order_changed (SPObject *object, Inkscape::XML::Node *child, Inkscape::XML::Node *old_ref, Inkscape::XML::Node *new_ref)
197 {
198 if (((SPObjectClass *) (parent_class))->order_changed)
199 (* ((SPObjectClass *) (parent_class))->order_changed) (object, child, old_ref, new_ref);
201 SP_GROUP(object)->group->onOrderChanged(child, old_ref, new_ref);
202 }
204 static void
205 sp_group_update (SPObject *object, SPCtx *ctx, unsigned int flags)
206 {
207 if (((SPObjectClass *) (parent_class))->update)
208 ((SPObjectClass *) (parent_class))->update (object, ctx, flags);
210 SP_GROUP(object)->group->onUpdate(ctx, flags);
211 }
213 static void
214 sp_group_modified (SPObject *object, guint flags)
215 {
216 if (((SPObjectClass *) (parent_class))->modified)
217 ((SPObjectClass *) (parent_class))->modified (object, flags);
219 SP_GROUP(object)->group->onModified(flags);
220 }
222 static Inkscape::XML::Node *
223 sp_group_write (SPObject *object, Inkscape::XML::Document *xml_doc, Inkscape::XML::Node *repr, guint flags)
224 {
225 SPGroup *group;
226 SPObject *child;
227 Inkscape::XML::Node *crepr;
229 group = SP_GROUP (object);
231 if (flags & SP_OBJECT_WRITE_BUILD) {
232 GSList *l;
233 if (!repr) {
234 repr = xml_doc->createElement("svg:g");
235 }
236 l = NULL;
237 for (child = sp_object_first_child(object); child != NULL; child = SP_OBJECT_NEXT(child) ) {
238 if (SP_IS_TITLE(child) || SP_IS_DESC(child)) continue;
239 crepr = child->updateRepr(xml_doc, NULL, flags);
240 if (crepr) l = g_slist_prepend (l, crepr);
241 }
242 while (l) {
243 repr->addChild((Inkscape::XML::Node *) l->data, NULL);
244 Inkscape::GC::release((Inkscape::XML::Node *) l->data);
245 l = g_slist_remove (l, l->data);
246 }
247 } else {
248 for (child = sp_object_first_child(object) ; child != NULL; child = SP_OBJECT_NEXT(child) ) {
249 if (SP_IS_TITLE(child) || SP_IS_DESC(child)) continue;
250 child->updateRepr(flags);
251 }
252 }
254 if ( flags & SP_OBJECT_WRITE_EXT ) {
255 const char *value;
256 if ( group->_layer_mode == SPGroup::LAYER ) {
257 value = "layer";
258 } else if ( flags & SP_OBJECT_WRITE_ALL ) {
259 value = "group";
260 } else {
261 value = NULL;
262 }
263 repr->setAttribute("inkscape:groupmode", value);
264 }
266 if (((SPObjectClass *) (parent_class))->write)
267 ((SPObjectClass *) (parent_class))->write (object, xml_doc, repr, flags);
269 return repr;
270 }
272 static void
273 sp_group_bbox(SPItem const *item, NRRect *bbox, NR::Matrix const &transform, unsigned const flags)
274 {
275 SP_GROUP(item)->group->calculateBBox(bbox, transform, flags);
276 }
278 static void
279 sp_group_print (SPItem * item, SPPrintContext *ctx)
280 {
281 SP_GROUP(item)->group->onPrint(ctx);
282 }
284 static gchar * sp_group_description (SPItem * item)
285 {
286 return SP_GROUP(item)->group->getDescription();
287 }
289 static NR::Matrix
290 sp_group_set_transform(SPItem *item, NR::Matrix const &xform)
291 {
292 Inkscape::Selection *selection = sp_desktop_selection(inkscape_active_desktop());
293 persp3d_split_perspectives_according_to_selection(selection);
295 NR::Matrix last_trans;
296 sp_svg_transform_read(SP_OBJECT_REPR(item)->attribute("transform"), &last_trans);
297 NR::Matrix inc_trans = last_trans.inverse()*xform;
299 std::list<Persp3D *> plist = selection->perspList();
300 for (std::list<Persp3D *>::iterator i = plist.begin(); i != plist.end(); ++i) {
301 persp3d_apply_affine_transformation(*i, inc_trans);
302 }
304 return xform;
305 }
307 static void sp_group_set(SPObject *object, unsigned key, char const *value) {
308 SPGroup *group = SP_GROUP(object);
310 switch (key) {
311 case SP_ATTR_INKSCAPE_GROUPMODE:
312 if ( value && !strcmp(value, "layer") ) {
313 group->setLayerMode(SPGroup::LAYER);
314 } else {
315 group->setLayerMode(SPGroup::GROUP);
316 }
317 break;
318 default: {
319 if (((SPObjectClass *) (parent_class))->set) {
320 (* ((SPObjectClass *) (parent_class))->set)(object, key, value);
321 }
322 }
323 }
324 }
326 static NRArenaItem *
327 sp_group_show (SPItem *item, NRArena *arena, unsigned int key, unsigned int flags)
328 {
329 return SP_GROUP(item)->group->show(arena, key, flags);
330 }
332 static void
333 sp_group_hide (SPItem *item, unsigned int key)
334 {
335 SP_GROUP(item)->group->hide(key);
336 }
338 static void sp_group_snappoints (SPItem const *item, SnapPointsIter p)
339 {
340 for (SPObject const *o = sp_object_first_child(SP_OBJECT(item));
341 o != NULL;
342 o = SP_OBJECT_NEXT(o))
343 {
344 if (SP_IS_ITEM(o)) {
345 sp_item_snappoints(SP_ITEM(o), false, p);
346 }
347 }
348 }
351 void
352 sp_item_group_ungroup (SPGroup *group, GSList **children, bool do_done)
353 {
354 g_return_if_fail (group != NULL);
355 g_return_if_fail (SP_IS_GROUP (group));
357 SPDocument *doc = SP_OBJECT_DOCUMENT (group);
358 SPObject *root = SP_DOCUMENT_ROOT (doc);
359 SPObject *defs = SP_OBJECT (SP_ROOT (root)->defs);
361 SPItem *gitem = SP_ITEM (group);
362 Inkscape::XML::Node *grepr = SP_OBJECT_REPR (gitem);
364 g_return_if_fail (!strcmp (grepr->name(), "svg:g") || !strcmp (grepr->name(), "svg:a") || !strcmp (grepr->name(), "svg:switch"));
366 // this converts the gradient/pattern fill/stroke on the group, if any, to userSpaceOnUse
367 sp_item_adjust_paint_recursive (gitem, NR::identity(), NR::identity(), false);
369 SPItem *pitem = SP_ITEM (SP_OBJECT_PARENT (gitem));
370 Inkscape::XML::Node *prepr = SP_OBJECT_REPR (pitem);
372 if (SP_IS_BOX3D(gitem)) {
373 group = box3d_convert_to_group(SP_BOX3D(gitem));
374 gitem = SP_ITEM(group);
375 }
377 sp_lpe_item_remove_all_path_effects(SP_LPE_ITEM(group), false);
379 /* Step 1 - generate lists of children objects */
380 GSList *items = NULL;
381 GSList *objects = NULL;
382 for (SPObject *child = sp_object_first_child(SP_OBJECT(group)) ; child != NULL; child = SP_OBJECT_NEXT(child) ) {
384 if (SP_IS_ITEM (child)) {
386 SPItem *citem = SP_ITEM (child);
388 /* Merging of style */
389 // this converts the gradient/pattern fill/stroke, if any, to userSpaceOnUse; we need to do
390 // it here _before_ the new transform is set, so as to use the pre-transform bbox
391 sp_item_adjust_paint_recursive (citem, NR::identity(), NR::identity(), false);
393 sp_style_merge_from_dying_parent(SP_OBJECT_STYLE(child), SP_OBJECT_STYLE(gitem));
394 /*
395 * fixme: We currently make no allowance for the case where child is cloned
396 * and the group has any style settings.
397 *
398 * (This should never occur with documents created solely with the current
399 * version of inkscape without using the XML editor: we usually apply group
400 * style changes to children rather than to the group itself.)
401 *
402 * If the group has no style settings, then
403 * sp_style_merge_from_dying_parent should be a no-op. Otherwise (i.e. if
404 * we change the child's style to compensate for its parent going away)
405 * then those changes will typically be reflected in any clones of child,
406 * whereas we'd prefer for Ungroup not to affect the visual appearance.
407 *
408 * The only way of preserving styling appearance in general is for child to
409 * be put into a new group -- a somewhat surprising response to an Ungroup
410 * command. We could add a new groupmode:transparent that would mostly
411 * hide the existence of such groups from the user (i.e. editing behaves as
412 * if the transparent group's children weren't in a group), though that's
413 * extra complication & maintenance burden and this case is rare.
414 */
416 child->updateRepr();
418 Inkscape::XML::Node *nrepr = SP_OBJECT_REPR (child)->duplicate(prepr->document());
420 // Merging transform
421 NR::Matrix ctrans;
422 NR::Matrix const g(gitem->transform);
423 if (SP_IS_USE(citem) && sp_use_get_original (SP_USE(citem)) &&
424 SP_OBJECT_PARENT (sp_use_get_original (SP_USE(citem))) == SP_OBJECT(group)) {
425 // make sure a clone's effective transform is the same as was under group
426 ctrans = g.inverse() * citem->transform * g;
427 } else {
428 ctrans = citem->transform * g;
429 }
431 // FIXME: constructing a transform that would fully preserve the appearance of a
432 // textpath if it is ungrouped with its path seems to be impossible in general
433 // case. E.g. if the group was squeezed, to keep the ungrouped textpath squeezed
434 // as well, we'll need to relink it to some "virtual" path which is inversely
435 // stretched relative to the actual path, and then squeeze the textpath back so it
436 // would both fit the actual path _and_ be squeezed as before. It's a bummer.
438 // This is just a way to temporarily remember the transform in repr. When repr is
439 // reattached outside of the group, the transform will be written more properly
440 // (i.e. optimized into the object if the corresponding preference is set)
441 gchar *affinestr=sp_svg_transform_write(ctrans);
442 nrepr->setAttribute("transform", affinestr);
443 g_free(affinestr);
445 items = g_slist_prepend (items, nrepr);
447 } else {
448 Inkscape::XML::Node *nrepr = SP_OBJECT_REPR (child)->duplicate(prepr->document());
449 objects = g_slist_prepend (objects, nrepr);
450 }
451 }
453 /* Step 2 - clear group */
454 // remember the position of the group
455 gint pos = SP_OBJECT_REPR(group)->position();
457 // the group is leaving forever, no heir, clones should take note; its children however are going to reemerge
458 SP_OBJECT (group)->deleteObject(true, false);
460 /* Step 3 - add nonitems */
461 if (objects) {
462 Inkscape::XML::Node *last_def = SP_OBJECT_REPR(defs)->lastChild();
463 while (objects) {
464 Inkscape::XML::Node *repr = (Inkscape::XML::Node *) objects->data;
465 if (!sp_repr_is_meta_element(repr))
466 SP_OBJECT_REPR(defs)->addChild(repr, last_def);
467 Inkscape::GC::release(repr);
468 objects = g_slist_remove (objects, objects->data);
469 }
470 }
472 /* Step 4 - add items */
473 while (items) {
474 Inkscape::XML::Node *repr = (Inkscape::XML::Node *) items->data;
475 // add item
476 prepr->appendChild(repr);
477 // restore position; since the items list was prepended (i.e. reverse), we now add
478 // all children at the same pos, which inverts the order once again
479 repr->setPosition(pos > 0 ? pos : 0);
481 // fill in the children list if non-null
482 SPItem *item = (SPItem *) doc->getObjectByRepr(repr);
484 sp_item_write_transform(item, repr, item->transform, NULL, false);
486 Inkscape::GC::release(repr);
487 if (children && SP_IS_ITEM (item))
488 *children = g_slist_prepend (*children, item);
490 items = g_slist_remove (items, items->data);
491 }
493 if (do_done)
494 sp_document_done (doc, SP_VERB_NONE, _("Ungroup"));
495 }
497 /*
498 * some API for list aspect of SPGroup
499 */
501 GSList *
502 sp_item_group_item_list (SPGroup * group)
503 {
504 GSList *s;
505 SPObject *o;
507 g_return_val_if_fail (group != NULL, NULL);
508 g_return_val_if_fail (SP_IS_GROUP (group), NULL);
510 s = NULL;
512 for ( o = sp_object_first_child(SP_OBJECT(group)) ; o != NULL ; o = SP_OBJECT_NEXT(o) ) {
513 if (SP_IS_ITEM (o)) {
514 s = g_slist_prepend (s, o);
515 }
516 }
518 return g_slist_reverse (s);
519 }
521 SPObject *
522 sp_item_group_get_child_by_name (SPGroup *group, SPObject *ref, const gchar *name)
523 {
524 SPObject *child;
525 child = (ref) ? SP_OBJECT_NEXT(ref) : sp_object_first_child(SP_OBJECT(group));
526 while ( child && strcmp (SP_OBJECT_REPR(child)->name(), name) ) {
527 child = SP_OBJECT_NEXT(child);
528 }
529 return child;
530 }
532 void SPGroup::setLayerMode(LayerMode mode) {
533 if ( _layer_mode != mode ) {
534 if ( mode == LAYER ) {
535 sp_document_add_resource(SP_OBJECT_DOCUMENT(this), "layer", this);
536 } else {
537 sp_document_remove_resource(SP_OBJECT_DOCUMENT(this), "layer", this);
538 }
539 _layer_mode = mode;
540 _updateLayerMode();
541 }
542 }
544 SPGroup::LayerMode SPGroup::layerDisplayMode(unsigned int dkey) const {
545 std::map<unsigned int, LayerMode>::const_iterator iter;
546 iter = _display_modes.find(dkey);
547 if ( iter != _display_modes.end() ) {
548 return (*iter).second;
549 } else {
550 return GROUP;
551 }
552 }
554 void SPGroup::setLayerDisplayMode(unsigned int dkey, SPGroup::LayerMode mode) {
555 if ( layerDisplayMode(dkey) != mode ) {
556 _display_modes[dkey] = mode;
557 _updateLayerMode(dkey);
558 }
559 }
561 void SPGroup::_updateLayerMode(unsigned int display_key) {
562 SPItemView *view;
563 for ( view = this->display ; view ; view = view->next ) {
564 if ( !display_key || view->key == display_key ) {
565 NRArenaGroup *arena_group=NR_ARENA_GROUP(view->arenaitem);
566 if (arena_group) {
567 nr_arena_group_set_transparent(arena_group, effectiveLayerMode(view->key) == SPGroup::LAYER);
568 }
569 }
570 }
571 }
573 void SPGroup::translateChildItems(NR::translate const &tr)
574 {
575 if (this->hasChildren())
576 {
577 SPObject *o = NULL;
578 for (o = sp_object_first_child(SP_OBJECT(this)) ; o != NULL ; o = SP_OBJECT_NEXT(o) ) {
579 if (SP_IS_ITEM (o)) {
580 sp_item_move_rel(static_cast<SPItem *>(o), tr);
581 }
582 }
583 }
584 }
586 CGroup::CGroup(SPGroup *group) {
587 _group = group;
588 }
590 CGroup::~CGroup() {
591 }
593 void CGroup::onChildAdded(Inkscape::XML::Node *child) {
594 SPObject *last_child = _group->lastChild();
595 if (last_child && SP_OBJECT_REPR(last_child) == child) {
596 // optimization for the common special case where the child is being added at the end
597 SPObject *ochild = last_child;
598 if ( SP_IS_ITEM(ochild) ) {
599 /* TODO: this should be moved into SPItem somehow */
600 SPItemView *v;
601 NRArenaItem *ac;
603 for (v = _group->display; v != NULL; v = v->next) {
604 ac = sp_item_invoke_show (SP_ITEM (ochild), NR_ARENA_ITEM_ARENA (v->arenaitem), v->key, v->flags);
606 if (ac) {
607 nr_arena_item_append_child (v->arenaitem, ac);
608 nr_arena_item_unref (ac);
609 }
610 }
611 }
612 } else { // general case
613 SPObject *ochild = sp_object_get_child_by_repr(_group, child);
614 if ( ochild && SP_IS_ITEM(ochild) ) {
615 /* TODO: this should be moved into SPItem somehow */
616 SPItemView *v;
617 NRArenaItem *ac;
619 unsigned position = sp_item_pos_in_parent(SP_ITEM(ochild));
621 for (v = _group->display; v != NULL; v = v->next) {
622 ac = sp_item_invoke_show (SP_ITEM (ochild), NR_ARENA_ITEM_ARENA (v->arenaitem), v->key, v->flags);
624 if (ac) {
625 nr_arena_item_add_child (v->arenaitem, ac, NULL);
626 nr_arena_item_set_order (ac, position);
627 nr_arena_item_unref (ac);
628 }
629 }
630 }
631 }
633 _group->requestModified(SP_OBJECT_MODIFIED_FLAG);
634 }
636 void CGroup::onChildRemoved(Inkscape::XML::Node */*child*/) {
637 _group->requestModified(SP_OBJECT_MODIFIED_FLAG);
638 }
640 void CGroup::onUpdate(SPCtx *ctx, unsigned int flags) {
641 SPItemCtx *ictx, cctx;
643 ictx = (SPItemCtx *) ctx;
644 cctx = *ictx;
646 if (flags & SP_OBJECT_MODIFIED_FLAG) {
647 flags |= SP_OBJECT_PARENT_MODIFIED_FLAG;
648 }
650 flags &= SP_OBJECT_MODIFIED_CASCADE;
652 if (flags & SP_OBJECT_STYLE_MODIFIED_FLAG) {
653 SPObject *object = SP_OBJECT(_group);
654 for (SPItemView *v = SP_ITEM(_group)->display; v != NULL; v = v->next) {
655 nr_arena_group_set_style(NR_ARENA_GROUP(v->arenaitem), SP_OBJECT_STYLE(object));
656 }
657 }
659 GSList *l = g_slist_reverse(_group->childList(true, SPObject::ActionUpdate));
660 while (l) {
661 SPObject *child = SP_OBJECT (l->data);
662 l = g_slist_remove (l, child);
663 if (flags || (child->uflags & (SP_OBJECT_MODIFIED_FLAG | SP_OBJECT_CHILD_MODIFIED_FLAG))) {
664 if (SP_IS_ITEM (child)) {
665 SPItem const &chi = *SP_ITEM(child);
666 cctx.i2doc = chi.transform * ictx->i2doc;
667 cctx.i2vp = chi.transform * ictx->i2vp;
668 child->updateDisplay((SPCtx *)&cctx, flags);
669 } else {
670 child->updateDisplay(ctx, flags);
671 }
672 }
673 g_object_unref (G_OBJECT (child));
674 }
675 }
677 void CGroup::onModified(guint flags) {
678 SPObject *child;
680 if (flags & SP_OBJECT_MODIFIED_FLAG) flags |= SP_OBJECT_PARENT_MODIFIED_FLAG;
681 flags &= SP_OBJECT_MODIFIED_CASCADE;
683 if (flags & SP_OBJECT_STYLE_MODIFIED_FLAG) {
684 SPObject *object = SP_OBJECT(_group);
685 for (SPItemView *v = SP_ITEM(_group)->display; v != NULL; v = v->next) {
686 nr_arena_group_set_style(NR_ARENA_GROUP(v->arenaitem), SP_OBJECT_STYLE(object));
687 }
688 }
690 GSList *l = g_slist_reverse(_group->childList(true));
691 while (l) {
692 child = SP_OBJECT (l->data);
693 l = g_slist_remove (l, child);
694 if (flags || (child->mflags & (SP_OBJECT_MODIFIED_FLAG | SP_OBJECT_CHILD_MODIFIED_FLAG))) {
695 child->emitModified(flags);
696 }
697 g_object_unref (G_OBJECT (child));
698 }
699 }
701 void CGroup::calculateBBox(NRRect *bbox, NR::Matrix const &transform, unsigned const flags) {
703 boost::optional<NR::Rect> dummy_bbox;
705 GSList *l = _group->childList(false, SPObject::ActionBBox);
706 while (l) {
707 SPObject *o = SP_OBJECT (l->data);
708 if (SP_IS_ITEM(o) && !SP_ITEM(o)->isHidden()) {
709 SPItem *child = SP_ITEM(o);
710 NR::Matrix const ct(child->transform * transform);
711 sp_item_invoke_bbox_full(child, &dummy_bbox, ct, flags, FALSE);
712 }
713 l = g_slist_remove (l, o);
714 }
716 *bbox = NRRect(dummy_bbox);
717 }
719 void CGroup::onPrint(SPPrintContext *ctx) {
720 GSList *l = g_slist_reverse(_group->childList(false));
721 while (l) {
722 SPObject *o = SP_OBJECT (l->data);
723 if (SP_IS_ITEM(o)) {
724 sp_item_invoke_print (SP_ITEM (o), ctx);
725 }
726 l = g_slist_remove (l, o);
727 }
728 }
730 gint CGroup::getItemCount() {
731 gint len = 0;
732 for (SPObject *o = sp_object_first_child(SP_OBJECT(_group)) ; o != NULL ; o = SP_OBJECT_NEXT(o) ) {
733 if (SP_IS_ITEM(o)) {
734 len++;
735 }
736 }
738 return len;
739 }
741 gchar *CGroup::getDescription() {
742 gint len = getItemCount();
743 return g_strdup_printf(
744 ngettext("<b>Group</b> of <b>%d</b> object",
745 "<b>Group</b> of <b>%d</b> objects",
746 len), len);
747 }
749 NRArenaItem *CGroup::show (NRArena *arena, unsigned int key, unsigned int flags) {
750 NRArenaItem *ai;
751 SPObject *object = SP_OBJECT(_group);
753 ai = NRArenaGroup::create(arena);
755 nr_arena_group_set_transparent(NR_ARENA_GROUP (ai),
756 _group->effectiveLayerMode(key) ==
757 SPGroup::LAYER);
758 nr_arena_group_set_style(NR_ARENA_GROUP(ai), SP_OBJECT_STYLE(object));
760 _showChildren(arena, ai, key, flags);
761 return ai;
762 }
764 void CGroup::_showChildren (NRArena *arena, NRArenaItem *ai, unsigned int key, unsigned int flags) {
765 NRArenaItem *ac = NULL;
766 NRArenaItem *ar = NULL;
767 SPItem * child = NULL;
768 GSList *l = g_slist_reverse(_group->childList(false, SPObject::ActionShow));
769 while (l) {
770 SPObject *o = SP_OBJECT (l->data);
771 if (SP_IS_ITEM (o)) {
772 child = SP_ITEM (o);
773 ac = sp_item_invoke_show (child, arena, key, flags);
774 if (ac) {
775 nr_arena_item_add_child (ai, ac, ar);
776 ar = ac;
777 nr_arena_item_unref (ac);
778 }
779 }
780 l = g_slist_remove (l, o);
781 }
782 }
784 void CGroup::hide (unsigned int key) {
785 SPItem * child;
787 GSList *l = g_slist_reverse(_group->childList(false, SPObject::ActionShow));
788 while (l) {
789 SPObject *o = SP_OBJECT (l->data);
790 if (SP_IS_ITEM (o)) {
791 child = SP_ITEM (o);
792 sp_item_invoke_hide (child, key);
793 }
794 l = g_slist_remove (l, o);
795 }
797 if (((SPItemClass *) parent_class)->hide)
798 ((SPItemClass *) parent_class)->hide (_group, key);
799 }
801 void CGroup::onOrderChanged (Inkscape::XML::Node *child, Inkscape::XML::Node *, Inkscape::XML::Node *)
802 {
803 SPObject *ochild = sp_object_get_child_by_repr(_group, child);
804 if ( ochild && SP_IS_ITEM(ochild) ) {
805 /* TODO: this should be moved into SPItem somehow */
806 SPItemView *v;
807 unsigned position = sp_item_pos_in_parent(SP_ITEM(ochild));
808 for ( v = SP_ITEM (ochild)->display ; v != NULL ; v = v->next ) {
809 nr_arena_item_set_order (v->arenaitem, position);
810 }
811 }
813 _group->requestModified(SP_OBJECT_MODIFIED_FLAG);
814 }
816 static void
817 sp_group_update_patheffect (SPLPEItem *lpeitem, bool write)
818 {
819 #ifdef GROUP_VERBOSE
820 g_message("sp_group_update_patheffect: %p\n", lpeitem);
821 #endif
822 g_return_if_fail (lpeitem != NULL);
823 g_return_if_fail (SP_IS_GROUP (lpeitem));
825 GSList const *item_list = sp_item_group_item_list(SP_GROUP(lpeitem));
826 for ( GSList const *iter = item_list; iter; iter = iter->next ) {
827 SPObject *subitem = static_cast<SPObject *>(iter->data);
828 if (SP_IS_LPE_ITEM(subitem)) {
829 if (SP_LPE_ITEM_CLASS (G_OBJECT_GET_CLASS (subitem))->update_patheffect) {
830 SP_LPE_ITEM_CLASS (G_OBJECT_GET_CLASS (subitem))->update_patheffect (SP_LPE_ITEM(subitem), write);
831 }
832 }
833 }
835 if (sp_lpe_item_has_path_effect(lpeitem) && sp_lpe_item_path_effects_enabled(lpeitem)) {
836 for (PathEffectList::iterator it = lpeitem->path_effect_list->begin(); it != lpeitem->path_effect_list->end(); it++)
837 {
838 LivePathEffectObject *lpeobj = (*it)->lpeobject;
839 lpeobj->lpe->doBeforeEffect(lpeitem);
840 }
842 sp_group_perform_patheffect(SP_GROUP(lpeitem), SP_GROUP(lpeitem));
843 }
844 }
846 static void
847 sp_group_perform_patheffect(SPGroup *group, SPGroup *topgroup)
848 {
849 GSList const *item_list = sp_item_group_item_list(SP_GROUP(group));
850 for ( GSList const *iter = item_list; iter; iter = iter->next ) {
851 SPObject *subitem = static_cast<SPObject *>(iter->data);
852 if (SP_IS_GROUP(subitem)) {
853 sp_group_perform_patheffect(SP_GROUP(subitem), topgroup);
854 } else if (SP_IS_SHAPE(subitem)) {
855 SPCurve * c = sp_shape_get_curve(SP_SHAPE(subitem));
856 sp_lpe_item_perform_path_effect(SP_LPE_ITEM(topgroup), c);
857 sp_shape_set_curve(SP_SHAPE(subitem), c, TRUE);
859 Inkscape::XML::Node *repr = SP_OBJECT_REPR(subitem);
861 gchar *str = sp_svg_write_path(c->get_pathvector());
862 repr->setAttribute("d", str);
863 g_free(str);
865 c->unref();
866 }
867 }
868 }
870 /*
871 Local Variables:
872 mode:c++
873 c-file-style:"stroustrup"
874 c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
875 indent-tabs-mode:nil
876 fill-column:99
877 End:
878 */
879 // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4 :