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"
49 static void sp_group_class_init (SPGroupClass *klass);
50 static void sp_group_init (SPGroup *group);
51 static void sp_group_build(SPObject *object, SPDocument *document, Inkscape::XML::Node *repr);
52 static void sp_group_release(SPObject *object);
53 static void sp_group_dispose(GObject *object);
55 static void sp_group_child_added (SPObject * object, Inkscape::XML::Node * child, Inkscape::XML::Node * ref);
56 static void sp_group_remove_child (SPObject * object, Inkscape::XML::Node * child);
57 static void sp_group_order_changed (SPObject * object, Inkscape::XML::Node * child, Inkscape::XML::Node * old_ref, Inkscape::XML::Node * new_ref);
58 static void sp_group_update (SPObject *object, SPCtx *ctx, guint flags);
59 static void sp_group_modified (SPObject *object, guint flags);
60 static Inkscape::XML::Node *sp_group_write (SPObject *object, Inkscape::XML::Node *repr, guint flags);
61 static void sp_group_set(SPObject *object, unsigned key, char const *value);
63 static void sp_group_bbox(SPItem const *item, NRRect *bbox, NR::Matrix const &transform, unsigned const flags);
64 static void sp_group_print (SPItem * item, SPPrintContext *ctx);
65 static gchar * sp_group_description (SPItem * item);
66 static NR::Matrix sp_group_set_transform(SPItem *item, NR::Matrix const &xform);
67 static NRArenaItem *sp_group_show (SPItem *item, NRArena *arena, unsigned int key, unsigned int flags);
68 static void sp_group_hide (SPItem * item, unsigned int key);
69 static void sp_group_snappoints (SPItem const *item, SnapPointsIter p);
71 static void sp_group_update_patheffect(SPLPEItem *lpeitem, bool write);
72 static void sp_group_perform_patheffect(SPGroup *group, SPGroup *topgroup);
74 static SPLPEItemClass * parent_class;
76 GType
77 sp_group_get_type (void)
78 {
79 static GType group_type = 0;
80 if (!group_type) {
81 GTypeInfo group_info = {
82 sizeof (SPGroupClass),
83 NULL, /* base_init */
84 NULL, /* base_finalize */
85 (GClassInitFunc) sp_group_class_init,
86 NULL, /* class_finalize */
87 NULL, /* class_data */
88 sizeof (SPGroup),
89 16, /* n_preallocs */
90 (GInstanceInitFunc) sp_group_init,
91 NULL, /* value_table */
92 };
93 group_type = g_type_register_static (SP_TYPE_LPE_ITEM, "SPGroup", &group_info, (GTypeFlags)0);
94 }
95 return group_type;
96 }
98 static void
99 sp_group_class_init (SPGroupClass *klass)
100 {
101 GObjectClass * object_class;
102 SPObjectClass * sp_object_class;
103 SPItemClass * item_class;
104 SPLPEItemClass * lpe_item_class;
106 object_class = (GObjectClass *) klass;
107 sp_object_class = (SPObjectClass *) klass;
108 item_class = (SPItemClass *) klass;
109 lpe_item_class = (SPLPEItemClass *) klass;
111 parent_class = (SPLPEItemClass *)g_type_class_ref (SP_TYPE_LPE_ITEM);
113 object_class->dispose = sp_group_dispose;
115 sp_object_class->child_added = sp_group_child_added;
116 sp_object_class->remove_child = sp_group_remove_child;
117 sp_object_class->order_changed = sp_group_order_changed;
118 sp_object_class->update = sp_group_update;
119 sp_object_class->modified = sp_group_modified;
120 sp_object_class->set = sp_group_set;
121 sp_object_class->write = sp_group_write;
122 sp_object_class->release = sp_group_release;
123 sp_object_class->build = sp_group_build;
125 item_class->bbox = sp_group_bbox;
126 item_class->print = sp_group_print;
127 item_class->description = sp_group_description;
128 item_class->set_transform = sp_group_set_transform;
129 item_class->show = sp_group_show;
130 item_class->hide = sp_group_hide;
131 item_class->snappoints = sp_group_snappoints;
133 lpe_item_class->update_patheffect = sp_group_update_patheffect;
134 }
136 static void
137 sp_group_init (SPGroup *group)
138 {
139 group->_layer_mode = SPGroup::GROUP;
140 group->group = new CGroup(group);
141 new (&group->_display_modes) std::map<unsigned int, SPGroup::LayerMode>();
142 }
144 static void sp_group_build(SPObject *object, SPDocument *document, Inkscape::XML::Node *repr)
145 {
146 sp_object_read_attr(object, "inkscape:groupmode");
148 if (((SPObjectClass *)parent_class)->build) {
149 ((SPObjectClass *)parent_class)->build(object, document, repr);
150 }
151 }
153 static void sp_group_release(SPObject *object) {
154 if ( SP_GROUP(object)->_layer_mode == SPGroup::LAYER ) {
155 sp_document_remove_resource(SP_OBJECT_DOCUMENT(object), "layer", object);
156 }
157 if (((SPObjectClass *)parent_class)->release) {
158 ((SPObjectClass *)parent_class)->release(object);
159 }
160 }
162 static void
163 sp_group_dispose(GObject *object)
164 {
165 SP_GROUP(object)->_display_modes.~map();
166 delete SP_GROUP(object)->group;
167 }
169 static void
170 sp_group_child_added (SPObject *object, Inkscape::XML::Node *child, Inkscape::XML::Node *ref)
171 {
172 SPItem *item;
174 item = SP_ITEM (object);
176 if (((SPObjectClass *) (parent_class))->child_added)
177 (* ((SPObjectClass *) (parent_class))->child_added) (object, child, ref);
179 SP_GROUP(object)->group->onChildAdded(child);
180 }
182 /* fixme: hide (Lauris) */
184 static void
185 sp_group_remove_child (SPObject * object, Inkscape::XML::Node * child)
186 {
187 if (((SPObjectClass *) (parent_class))->remove_child)
188 (* ((SPObjectClass *) (parent_class))->remove_child) (object, child);
190 SP_GROUP(object)->group->onChildRemoved(child);
191 }
193 static void
194 sp_group_order_changed (SPObject *object, Inkscape::XML::Node *child, Inkscape::XML::Node *old_ref, Inkscape::XML::Node *new_ref)
195 {
196 if (((SPObjectClass *) (parent_class))->order_changed)
197 (* ((SPObjectClass *) (parent_class))->order_changed) (object, child, old_ref, new_ref);
199 SP_GROUP(object)->group->onOrderChanged(child, old_ref, new_ref);
200 }
202 static void
203 sp_group_update (SPObject *object, SPCtx *ctx, unsigned int flags)
204 {
205 if (((SPObjectClass *) (parent_class))->update)
206 ((SPObjectClass *) (parent_class))->update (object, ctx, flags);
208 SP_GROUP(object)->group->onUpdate(ctx, flags);
209 }
211 static void
212 sp_group_modified (SPObject *object, guint flags)
213 {
214 if (((SPObjectClass *) (parent_class))->modified)
215 ((SPObjectClass *) (parent_class))->modified (object, flags);
217 SP_GROUP(object)->group->onModified(flags);
218 }
220 static Inkscape::XML::Node *
221 sp_group_write (SPObject *object, Inkscape::XML::Node *repr, guint flags)
222 {
223 SPGroup *group;
224 SPObject *child;
225 Inkscape::XML::Node *crepr;
227 group = SP_GROUP (object);
229 if (flags & SP_OBJECT_WRITE_BUILD) {
230 GSList *l;
231 if (!repr) {
232 Inkscape::XML::Document *xml_doc = sp_document_repr_doc(SP_OBJECT_DOCUMENT(object));
233 repr = xml_doc->createElement("svg:g");
234 }
235 l = NULL;
236 for (child = sp_object_first_child(object); child != NULL; child = SP_OBJECT_NEXT(child) ) {
237 crepr = child->updateRepr(NULL, flags);
238 if (crepr) l = g_slist_prepend (l, crepr);
239 }
240 while (l) {
241 repr->addChild((Inkscape::XML::Node *) l->data, NULL);
242 Inkscape::GC::release((Inkscape::XML::Node *) l->data);
243 l = g_slist_remove (l, l->data);
244 }
245 } else {
246 for (child = sp_object_first_child(object) ; child != NULL; child = SP_OBJECT_NEXT(child) ) {
247 child->updateRepr(flags);
248 }
249 }
251 if ( flags & SP_OBJECT_WRITE_EXT ) {
252 const char *value;
253 if ( group->_layer_mode == SPGroup::LAYER ) {
254 value = "layer";
255 } else if ( flags & SP_OBJECT_WRITE_ALL ) {
256 value = "group";
257 } else {
258 value = NULL;
259 }
260 repr->setAttribute("inkscape:groupmode", value);
261 }
263 if (((SPObjectClass *) (parent_class))->write)
264 ((SPObjectClass *) (parent_class))->write (object, repr, flags);
266 return repr;
267 }
269 static void
270 sp_group_bbox(SPItem const *item, NRRect *bbox, NR::Matrix const &transform, unsigned const flags)
271 {
272 SP_GROUP(item)->group->calculateBBox(bbox, transform, flags);
273 }
275 static void
276 sp_group_print (SPItem * item, SPPrintContext *ctx)
277 {
278 SP_GROUP(item)->group->onPrint(ctx);
279 }
281 static gchar * sp_group_description (SPItem * item)
282 {
283 return SP_GROUP(item)->group->getDescription();
284 }
286 static NR::Matrix
287 sp_group_set_transform(SPItem *item, NR::Matrix const &xform)
288 {
289 Inkscape::Selection *selection = sp_desktop_selection(inkscape_active_desktop());
290 persp3d_split_perspectives_according_to_selection(selection);
292 NR::Matrix last_trans;
293 sp_svg_transform_read(SP_OBJECT_REPR(item)->attribute("transform"), &last_trans);
294 NR::Matrix inc_trans = last_trans.inverse()*xform;
296 std::list<Persp3D *> plist = selection->perspList();
297 for (std::list<Persp3D *>::iterator i = plist.begin(); i != plist.end(); ++i) {
298 persp3d_apply_affine_transformation(*i, inc_trans);
299 }
301 return xform;
302 }
304 static void sp_group_set(SPObject *object, unsigned key, char const *value) {
305 SPGroup *group = SP_GROUP(object);
307 switch (key) {
308 case SP_ATTR_INKSCAPE_GROUPMODE:
309 if ( value && !strcmp(value, "layer") ) {
310 group->setLayerMode(SPGroup::LAYER);
311 } else {
312 group->setLayerMode(SPGroup::GROUP);
313 }
314 break;
315 default: {
316 if (((SPObjectClass *) (parent_class))->set) {
317 (* ((SPObjectClass *) (parent_class))->set)(object, key, value);
318 }
319 }
320 }
321 }
323 static NRArenaItem *
324 sp_group_show (SPItem *item, NRArena *arena, unsigned int key, unsigned int flags)
325 {
326 return SP_GROUP(item)->group->show(arena, key, flags);
327 }
329 static void
330 sp_group_hide (SPItem *item, unsigned int key)
331 {
332 SP_GROUP(item)->group->hide(key);
333 }
335 static void sp_group_snappoints (SPItem const *item, SnapPointsIter p)
336 {
337 for (SPObject const *o = sp_object_first_child(SP_OBJECT(item));
338 o != NULL;
339 o = SP_OBJECT_NEXT(o))
340 {
341 if (SP_IS_ITEM(o)) {
342 sp_item_snappoints(SP_ITEM(o), false, p);
343 }
344 }
345 }
348 void
349 sp_item_group_ungroup (SPGroup *group, GSList **children, bool do_done)
350 {
351 g_return_if_fail (group != NULL);
352 g_return_if_fail (SP_IS_GROUP (group));
354 SPDocument *doc = SP_OBJECT_DOCUMENT (group);
355 SPObject *root = SP_DOCUMENT_ROOT (doc);
356 SPObject *defs = SP_OBJECT (SP_ROOT (root)->defs);
358 SPItem *gitem = SP_ITEM (group);
359 Inkscape::XML::Node *grepr = SP_OBJECT_REPR (gitem);
361 g_return_if_fail (!strcmp (grepr->name(), "svg:g") || !strcmp (grepr->name(), "svg:a") || !strcmp (grepr->name(), "svg:switch"));
363 // this converts the gradient/pattern fill/stroke on the group, if any, to userSpaceOnUse
364 sp_item_adjust_paint_recursive (gitem, NR::identity(), NR::identity(), false);
366 SPItem *pitem = SP_ITEM (SP_OBJECT_PARENT (gitem));
367 Inkscape::XML::Node *prepr = SP_OBJECT_REPR (pitem);
369 if (SP_IS_BOX3D(gitem)) {
370 group = box3d_convert_to_group(SP_BOX3D(gitem));
371 gitem = SP_ITEM(group);
372 }
374 sp_lpe_item_remove_all_path_effects(SP_LPE_ITEM(group), false);
376 /* Step 1 - generate lists of children objects */
377 GSList *items = NULL;
378 GSList *objects = NULL;
379 for (SPObject *child = sp_object_first_child(SP_OBJECT(group)) ; child != NULL; child = SP_OBJECT_NEXT(child) ) {
381 if (SP_IS_ITEM (child)) {
383 SPItem *citem = SP_ITEM (child);
385 /* Merging of style */
386 // this converts the gradient/pattern fill/stroke, if any, to userSpaceOnUse; we need to do
387 // it here _before_ the new transform is set, so as to use the pre-transform bbox
388 sp_item_adjust_paint_recursive (citem, NR::identity(), NR::identity(), false);
390 sp_style_merge_from_dying_parent(SP_OBJECT_STYLE(child), SP_OBJECT_STYLE(gitem));
391 /*
392 * fixme: We currently make no allowance for the case where child is cloned
393 * and the group has any style settings.
394 *
395 * (This should never occur with documents created solely with the current
396 * version of inkscape without using the XML editor: we usually apply group
397 * style changes to children rather than to the group itself.)
398 *
399 * If the group has no style settings, then
400 * sp_style_merge_from_dying_parent should be a no-op. Otherwise (i.e. if
401 * we change the child's style to compensate for its parent going away)
402 * then those changes will typically be reflected in any clones of child,
403 * whereas we'd prefer for Ungroup not to affect the visual appearance.
404 *
405 * The only way of preserving styling appearance in general is for child to
406 * be put into a new group -- a somewhat surprising response to an Ungroup
407 * command. We could add a new groupmode:transparent that would mostly
408 * hide the existence of such groups from the user (i.e. editing behaves as
409 * if the transparent group's children weren't in a group), though that's
410 * extra complication & maintenance burden and this case is rare.
411 */
413 child->updateRepr();
415 Inkscape::XML::Node *nrepr = SP_OBJECT_REPR (child)->duplicate(prepr->document());
417 // Merging transform
418 NR::Matrix ctrans;
419 NR::Matrix const g(gitem->transform);
420 if (SP_IS_USE(citem) && sp_use_get_original (SP_USE(citem)) &&
421 SP_OBJECT_PARENT (sp_use_get_original (SP_USE(citem))) == SP_OBJECT(group)) {
422 // make sure a clone's effective transform is the same as was under group
423 ctrans = g.inverse() * citem->transform * g;
424 } else {
425 ctrans = citem->transform * g;
426 }
428 // FIXME: constructing a transform that would fully preserve the appearance of a
429 // textpath if it is ungrouped with its path seems to be impossible in general
430 // case. E.g. if the group was squeezed, to keep the ungrouped textpath squeezed
431 // as well, we'll need to relink it to some "virtual" path which is inversely
432 // stretched relative to the actual path, and then squeeze the textpath back so it
433 // would both fit the actual path _and_ be squeezed as before. It's a bummer.
435 // This is just a way to temporarily remember the transform in repr. When repr is
436 // reattached outside of the group, the transform will be written more properly
437 // (i.e. optimized into the object if the corresponding preference is set)
438 gchar *affinestr=sp_svg_transform_write(ctrans);
439 nrepr->setAttribute("transform", affinestr);
440 g_free(affinestr);
442 items = g_slist_prepend (items, nrepr);
444 } else {
445 Inkscape::XML::Node *nrepr = SP_OBJECT_REPR (child)->duplicate(prepr->document());
446 objects = g_slist_prepend (objects, nrepr);
447 }
448 }
450 /* Step 2 - clear group */
451 // remember the position of the group
452 gint pos = SP_OBJECT_REPR(group)->position();
454 // the group is leaving forever, no heir, clones should take note; its children however are going to reemerge
455 SP_OBJECT (group)->deleteObject(true, false);
457 /* Step 3 - add nonitems */
458 if (objects) {
459 Inkscape::XML::Node *last_def = SP_OBJECT_REPR(defs)->lastChild();
460 while (objects) {
461 SP_OBJECT_REPR(defs)->addChild((Inkscape::XML::Node *) objects->data, last_def);
462 Inkscape::GC::release((Inkscape::XML::Node *) objects->data);
463 objects = g_slist_remove (objects, objects->data);
464 }
465 }
467 /* Step 4 - add items */
468 while (items) {
469 Inkscape::XML::Node *repr = (Inkscape::XML::Node *) items->data;
470 // add item
471 prepr->appendChild(repr);
472 // restore position; since the items list was prepended (i.e. reverse), we now add
473 // all children at the same pos, which inverts the order once again
474 repr->setPosition(pos > 0 ? pos : 0);
476 // fill in the children list if non-null
477 SPItem *item = (SPItem *) doc->getObjectByRepr(repr);
479 sp_item_write_transform(item, repr, item->transform, NULL, false);
481 Inkscape::GC::release(repr);
482 if (children && SP_IS_ITEM (item))
483 *children = g_slist_prepend (*children, item);
485 items = g_slist_remove (items, items->data);
486 }
488 if (do_done)
489 sp_document_done (doc, SP_VERB_NONE, _("Ungroup"));
490 }
492 /*
493 * some API for list aspect of SPGroup
494 */
496 GSList *
497 sp_item_group_item_list (SPGroup * group)
498 {
499 GSList *s;
500 SPObject *o;
502 g_return_val_if_fail (group != NULL, NULL);
503 g_return_val_if_fail (SP_IS_GROUP (group), NULL);
505 s = NULL;
507 for ( o = sp_object_first_child(SP_OBJECT(group)) ; o != NULL ; o = SP_OBJECT_NEXT(o) ) {
508 if (SP_IS_ITEM (o)) {
509 s = g_slist_prepend (s, o);
510 }
511 }
513 return g_slist_reverse (s);
514 }
516 SPObject *
517 sp_item_group_get_child_by_name (SPGroup *group, SPObject *ref, const gchar *name)
518 {
519 SPObject *child;
520 child = (ref) ? SP_OBJECT_NEXT(ref) : sp_object_first_child(SP_OBJECT(group));
521 while ( child && strcmp (SP_OBJECT_REPR(child)->name(), name) ) {
522 child = SP_OBJECT_NEXT(child);
523 }
524 return child;
525 }
527 void SPGroup::setLayerMode(LayerMode mode) {
528 if ( _layer_mode != mode ) {
529 if ( mode == LAYER ) {
530 sp_document_add_resource(SP_OBJECT_DOCUMENT(this), "layer", this);
531 } else {
532 sp_document_remove_resource(SP_OBJECT_DOCUMENT(this), "layer", this);
533 }
534 _layer_mode = mode;
535 _updateLayerMode();
536 }
537 }
539 SPGroup::LayerMode SPGroup::layerDisplayMode(unsigned int dkey) const {
540 std::map<unsigned int, LayerMode>::const_iterator iter;
541 iter = _display_modes.find(dkey);
542 if ( iter != _display_modes.end() ) {
543 return (*iter).second;
544 } else {
545 return GROUP;
546 }
547 }
549 void SPGroup::setLayerDisplayMode(unsigned int dkey, SPGroup::LayerMode mode) {
550 if ( layerDisplayMode(dkey) != mode ) {
551 _display_modes[dkey] = mode;
552 _updateLayerMode(dkey);
553 }
554 }
556 void SPGroup::_updateLayerMode(unsigned int display_key) {
557 SPItemView *view;
558 for ( view = this->display ; view ; view = view->next ) {
559 if ( !display_key || view->key == display_key ) {
560 NRArenaGroup *arena_group=NR_ARENA_GROUP(view->arenaitem);
561 if (arena_group) {
562 nr_arena_group_set_transparent(arena_group, effectiveLayerMode(view->key) == SPGroup::LAYER);
563 }
564 }
565 }
566 }
568 void SPGroup::translateChildItems(NR::translate const &tr)
569 {
570 if (this->hasChildren())
571 {
572 SPObject *o = NULL;
573 for (o = sp_object_first_child(SP_OBJECT(this)) ; o != NULL ; o = SP_OBJECT_NEXT(o) ) {
574 if (SP_IS_ITEM (o)) {
575 sp_item_move_rel(static_cast<SPItem *>(o), tr);
576 }
577 }
578 }
579 }
581 CGroup::CGroup(SPGroup *group) {
582 _group = group;
583 }
585 CGroup::~CGroup() {
586 }
588 void CGroup::onChildAdded(Inkscape::XML::Node *child) {
589 SPObject *last_child = _group->lastChild();
590 if (last_child && SP_OBJECT_REPR(last_child) == child) {
591 // optimization for the common special case where the child is being added at the end
592 SPObject *ochild = last_child;
593 if ( SP_IS_ITEM(ochild) ) {
594 /* TODO: this should be moved into SPItem somehow */
595 SPItemView *v;
596 NRArenaItem *ac;
598 for (v = _group->display; v != NULL; v = v->next) {
599 ac = sp_item_invoke_show (SP_ITEM (ochild), NR_ARENA_ITEM_ARENA (v->arenaitem), v->key, v->flags);
601 if (ac) {
602 nr_arena_item_append_child (v->arenaitem, ac);
603 nr_arena_item_unref (ac);
604 }
605 }
606 }
607 } else { // general case
608 SPObject *ochild = sp_object_get_child_by_repr(_group, child);
609 if ( ochild && SP_IS_ITEM(ochild) ) {
610 /* TODO: this should be moved into SPItem somehow */
611 SPItemView *v;
612 NRArenaItem *ac;
614 unsigned position = sp_item_pos_in_parent(SP_ITEM(ochild));
616 for (v = _group->display; v != NULL; v = v->next) {
617 ac = sp_item_invoke_show (SP_ITEM (ochild), NR_ARENA_ITEM_ARENA (v->arenaitem), v->key, v->flags);
619 if (ac) {
620 nr_arena_item_add_child (v->arenaitem, ac, NULL);
621 nr_arena_item_set_order (ac, position);
622 nr_arena_item_unref (ac);
623 }
624 }
625 }
626 }
628 _group->requestModified(SP_OBJECT_MODIFIED_FLAG);
629 }
631 void CGroup::onChildRemoved(Inkscape::XML::Node */*child*/) {
632 _group->requestModified(SP_OBJECT_MODIFIED_FLAG);
633 }
635 void CGroup::onUpdate(SPCtx *ctx, unsigned int flags) {
636 SPItemCtx *ictx, cctx;
638 ictx = (SPItemCtx *) ctx;
639 cctx = *ictx;
641 if (flags & SP_OBJECT_MODIFIED_FLAG) {
642 flags |= SP_OBJECT_PARENT_MODIFIED_FLAG;
643 }
645 flags &= SP_OBJECT_MODIFIED_CASCADE;
647 if (flags & SP_OBJECT_STYLE_MODIFIED_FLAG) {
648 SPObject *object = SP_OBJECT(_group);
649 for (SPItemView *v = SP_ITEM(_group)->display; v != NULL; v = v->next) {
650 nr_arena_group_set_style(NR_ARENA_GROUP(v->arenaitem), SP_OBJECT_STYLE(object));
651 }
652 }
654 GSList *l = g_slist_reverse(_group->childList(true, SPObject::ActionUpdate));
655 while (l) {
656 SPObject *child = SP_OBJECT (l->data);
657 l = g_slist_remove (l, child);
658 if (flags || (child->uflags & (SP_OBJECT_MODIFIED_FLAG | SP_OBJECT_CHILD_MODIFIED_FLAG))) {
659 if (SP_IS_ITEM (child)) {
660 SPItem const &chi = *SP_ITEM(child);
661 cctx.i2doc = chi.transform * ictx->i2doc;
662 cctx.i2vp = chi.transform * ictx->i2vp;
663 child->updateDisplay((SPCtx *)&cctx, flags);
664 } else {
665 child->updateDisplay(ctx, flags);
666 }
667 }
668 g_object_unref (G_OBJECT (child));
669 }
670 }
672 void CGroup::onModified(guint flags) {
673 SPObject *child;
675 if (flags & SP_OBJECT_MODIFIED_FLAG) flags |= SP_OBJECT_PARENT_MODIFIED_FLAG;
676 flags &= SP_OBJECT_MODIFIED_CASCADE;
678 if (flags & SP_OBJECT_STYLE_MODIFIED_FLAG) {
679 SPObject *object = SP_OBJECT(_group);
680 for (SPItemView *v = SP_ITEM(_group)->display; v != NULL; v = v->next) {
681 nr_arena_group_set_style(NR_ARENA_GROUP(v->arenaitem), SP_OBJECT_STYLE(object));
682 }
683 }
685 GSList *l = g_slist_reverse(_group->childList(true));
686 while (l) {
687 child = SP_OBJECT (l->data);
688 l = g_slist_remove (l, child);
689 if (flags || (child->mflags & (SP_OBJECT_MODIFIED_FLAG | SP_OBJECT_CHILD_MODIFIED_FLAG))) {
690 child->emitModified(flags);
691 }
692 g_object_unref (G_OBJECT (child));
693 }
694 }
696 void CGroup::calculateBBox(NRRect *bbox, NR::Matrix const &transform, unsigned const flags) {
698 NR::Maybe<NR::Rect> dummy_bbox = NR::Nothing();
700 GSList *l = _group->childList(false, SPObject::ActionBBox);
701 while (l) {
702 SPObject *o = SP_OBJECT (l->data);
703 if (SP_IS_ITEM(o)) {
704 SPItem *child = SP_ITEM(o);
705 NR::Matrix const ct(child->transform * transform);
706 sp_item_invoke_bbox_full(child, &dummy_bbox, ct, flags, FALSE);
707 }
708 l = g_slist_remove (l, o);
709 }
711 *bbox = NRRect(dummy_bbox);
712 }
714 void CGroup::onPrint(SPPrintContext *ctx) {
715 GSList *l = g_slist_reverse(_group->childList(false));
716 while (l) {
717 SPObject *o = SP_OBJECT (l->data);
718 if (SP_IS_ITEM(o)) {
719 sp_item_invoke_print (SP_ITEM (o), ctx);
720 }
721 l = g_slist_remove (l, o);
722 }
723 }
725 gint CGroup::getItemCount() {
726 gint len = 0;
727 for (SPObject *o = sp_object_first_child(SP_OBJECT(_group)) ; o != NULL ; o = SP_OBJECT_NEXT(o) ) {
728 if (SP_IS_ITEM(o)) {
729 len++;
730 }
731 }
733 return len;
734 }
736 gchar *CGroup::getDescription() {
737 gint len = getItemCount();
738 return g_strdup_printf(
739 ngettext("<b>Group</b> of <b>%d</b> object",
740 "<b>Group</b> of <b>%d</b> objects",
741 len), len);
742 }
744 NRArenaItem *CGroup::show (NRArena *arena, unsigned int key, unsigned int flags) {
745 NRArenaItem *ai;
746 SPObject *object = SP_OBJECT(_group);
748 ai = NRArenaGroup::create(arena);
750 nr_arena_group_set_transparent(NR_ARENA_GROUP (ai),
751 _group->effectiveLayerMode(key) ==
752 SPGroup::LAYER);
753 nr_arena_group_set_style(NR_ARENA_GROUP(ai), SP_OBJECT_STYLE(object));
755 _showChildren(arena, ai, key, flags);
756 return ai;
757 }
759 void CGroup::_showChildren (NRArena *arena, NRArenaItem *ai, unsigned int key, unsigned int flags) {
760 NRArenaItem *ac = NULL;
761 NRArenaItem *ar = NULL;
762 SPItem * child = NULL;
763 GSList *l = g_slist_reverse(_group->childList(false, SPObject::ActionShow));
764 while (l) {
765 SPObject *o = SP_OBJECT (l->data);
766 if (SP_IS_ITEM (o)) {
767 child = SP_ITEM (o);
768 ac = sp_item_invoke_show (child, arena, key, flags);
769 if (ac) {
770 nr_arena_item_add_child (ai, ac, ar);
771 ar = ac;
772 nr_arena_item_unref (ac);
773 }
774 }
775 l = g_slist_remove (l, o);
776 }
777 }
779 void CGroup::hide (unsigned int key) {
780 SPItem * child;
782 GSList *l = g_slist_reverse(_group->childList(false, SPObject::ActionShow));
783 while (l) {
784 SPObject *o = SP_OBJECT (l->data);
785 if (SP_IS_ITEM (o)) {
786 child = SP_ITEM (o);
787 sp_item_invoke_hide (child, key);
788 }
789 l = g_slist_remove (l, o);
790 }
792 if (((SPItemClass *) parent_class)->hide)
793 ((SPItemClass *) parent_class)->hide (_group, key);
794 }
796 void CGroup::onOrderChanged (Inkscape::XML::Node *child, Inkscape::XML::Node *, Inkscape::XML::Node *)
797 {
798 SPObject *ochild = sp_object_get_child_by_repr(_group, child);
799 if ( ochild && SP_IS_ITEM(ochild) ) {
800 /* TODO: this should be moved into SPItem somehow */
801 SPItemView *v;
802 unsigned position = sp_item_pos_in_parent(SP_ITEM(ochild));
803 for ( v = SP_ITEM (ochild)->display ; v != NULL ; v = v->next ) {
804 nr_arena_item_set_order (v->arenaitem, position);
805 }
806 }
808 _group->requestModified(SP_OBJECT_MODIFIED_FLAG);
809 }
811 static void
812 sp_group_update_patheffect (SPLPEItem *lpeitem, bool write)
813 {
814 #ifdef GROUP_VERBOSE
815 g_message("sp_group_update_patheffect: %p\n", lpeitem);
816 #endif
817 g_return_if_fail (lpeitem != NULL);
818 g_return_if_fail (SP_IS_GROUP (lpeitem));
820 GSList const *item_list = sp_item_group_item_list(SP_GROUP(lpeitem));
821 for ( GSList const *iter = item_list; iter; iter = iter->next ) {
822 SPObject *subitem = static_cast<SPObject *>(iter->data);
823 if (SP_IS_LPE_ITEM(subitem)) {
824 if (SP_LPE_ITEM_CLASS (G_OBJECT_GET_CLASS (subitem))->update_patheffect) {
825 SP_LPE_ITEM_CLASS (G_OBJECT_GET_CLASS (subitem))->update_patheffect (SP_LPE_ITEM(subitem), write);
826 }
827 }
828 }
830 if (sp_lpe_item_has_path_effect(lpeitem) && sp_lpe_item_path_effects_enabled(lpeitem)) {
831 for (PathEffectList::iterator it = lpeitem->path_effect_list->begin(); it != lpeitem->path_effect_list->end(); it++)
832 {
833 LivePathEffectObject *lpeobj = (*it)->lpeobject;
834 lpeobj->lpe->doBeforeEffect(lpeitem);
835 }
837 sp_group_perform_patheffect(SP_GROUP(lpeitem), SP_GROUP(lpeitem));
838 }
839 }
841 static void
842 sp_group_perform_patheffect(SPGroup *group, SPGroup *topgroup)
843 {
844 GSList const *item_list = sp_item_group_item_list(SP_GROUP(group));
845 for ( GSList const *iter = item_list; iter; iter = iter->next ) {
846 SPObject *subitem = static_cast<SPObject *>(iter->data);
847 if (SP_IS_GROUP(subitem)) {
848 sp_group_perform_patheffect(SP_GROUP(subitem), topgroup);
849 } else if (SP_IS_SHAPE(subitem)) {
850 SPCurve * c = sp_shape_get_curve(SP_SHAPE(subitem));
851 sp_lpe_item_perform_path_effect(SP_LPE_ITEM(topgroup), c);
852 sp_shape_set_curve(SP_SHAPE(subitem), c, TRUE);
854 Inkscape::XML::Node *repr = SP_OBJECT_REPR(subitem);
856 NArtBpath const *abp = c->first_bpath();
857 if (abp) {
858 gchar *str = sp_svg_write_path(abp);
859 repr->setAttribute("d", str);
860 g_free(str);
861 } else {
862 repr->setAttribute("d", "");
863 }
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 :