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 "libnr/nr-matrix-ops.h"
27 #include "libnr/nr-matrix-fns.h"
28 #include "xml/repr.h"
29 #include "svg/svg.h"
30 #include "document.h"
31 #include "style.h"
32 #include "attributes.h"
33 #include "sp-item-transform.h"
34 #include "sp-root.h"
35 #include "sp-use.h"
36 #include "prefs-utils.h"
37 #include "sp-clippath.h"
38 #include "sp-mask.h"
39 #include "sp-path.h"
40 #include "box3d.h"
41 #include "persp3d.h"
42 #include "inkscape.h"
43 #include "desktop-handles.h"
44 #include "selection.h"
46 static void sp_group_class_init (SPGroupClass *klass);
47 static void sp_group_init (SPGroup *group);
48 static void sp_group_build(SPObject *object, SPDocument *document, Inkscape::XML::Node *repr);
49 static void sp_group_release(SPObject *object);
50 static void sp_group_dispose(GObject *object);
52 static void sp_group_child_added (SPObject * object, Inkscape::XML::Node * child, Inkscape::XML::Node * ref);
53 static void sp_group_remove_child (SPObject * object, Inkscape::XML::Node * child);
54 static void sp_group_order_changed (SPObject * object, Inkscape::XML::Node * child, Inkscape::XML::Node * old_ref, Inkscape::XML::Node * new_ref);
55 static void sp_group_update (SPObject *object, SPCtx *ctx, guint flags);
56 static void sp_group_modified (SPObject *object, guint flags);
57 static Inkscape::XML::Node *sp_group_write (SPObject *object, Inkscape::XML::Node *repr, guint flags);
58 static void sp_group_set(SPObject *object, unsigned key, char const *value);
60 static void sp_group_bbox(SPItem const *item, NRRect *bbox, NR::Matrix const &transform, unsigned const flags);
61 static void sp_group_print (SPItem * item, SPPrintContext *ctx);
62 static gchar * sp_group_description (SPItem * item);
63 static NR::Matrix sp_group_set_transform(SPItem *item, NR::Matrix const &xform);
64 static NRArenaItem *sp_group_show (SPItem *item, NRArena *arena, unsigned int key, unsigned int flags);
65 static void sp_group_hide (SPItem * item, unsigned int key);
66 static void sp_group_snappoints (SPItem const *item, SnapPointsIter p);
68 static void sp_group_update_patheffect(SPLPEItem *lpeitem, bool write);
70 static SPLPEItemClass * parent_class;
72 GType
73 sp_group_get_type (void)
74 {
75 static GType group_type = 0;
76 if (!group_type) {
77 GTypeInfo group_info = {
78 sizeof (SPGroupClass),
79 NULL, /* base_init */
80 NULL, /* base_finalize */
81 (GClassInitFunc) sp_group_class_init,
82 NULL, /* class_finalize */
83 NULL, /* class_data */
84 sizeof (SPGroup),
85 16, /* n_preallocs */
86 (GInstanceInitFunc) sp_group_init,
87 NULL, /* value_table */
88 };
89 group_type = g_type_register_static (SP_TYPE_LPE_ITEM, "SPGroup", &group_info, (GTypeFlags)0);
90 }
91 return group_type;
92 }
94 static void
95 sp_group_class_init (SPGroupClass *klass)
96 {
97 GObjectClass * object_class;
98 SPObjectClass * sp_object_class;
99 SPItemClass * item_class;
100 SPLPEItemClass * lpe_item_class;
102 object_class = (GObjectClass *) klass;
103 sp_object_class = (SPObjectClass *) klass;
104 item_class = (SPItemClass *) klass;
105 lpe_item_class = (SPLPEItemClass *) klass;
107 parent_class = (SPLPEItemClass *)g_type_class_ref (SP_TYPE_LPE_ITEM);
109 object_class->dispose = sp_group_dispose;
111 sp_object_class->child_added = sp_group_child_added;
112 sp_object_class->remove_child = sp_group_remove_child;
113 sp_object_class->order_changed = sp_group_order_changed;
114 sp_object_class->update = sp_group_update;
115 sp_object_class->modified = sp_group_modified;
116 sp_object_class->set = sp_group_set;
117 sp_object_class->write = sp_group_write;
118 sp_object_class->release = sp_group_release;
119 sp_object_class->build = sp_group_build;
121 item_class->bbox = sp_group_bbox;
122 item_class->print = sp_group_print;
123 item_class->description = sp_group_description;
124 item_class->set_transform = sp_group_set_transform;
125 item_class->show = sp_group_show;
126 item_class->hide = sp_group_hide;
127 item_class->snappoints = sp_group_snappoints;
129 lpe_item_class->update_patheffect = sp_group_update_patheffect;
130 }
132 static void
133 sp_group_init (SPGroup *group)
134 {
135 group->_layer_mode = SPGroup::GROUP;
136 group->group = new CGroup(group);
137 new (&group->_display_modes) std::map<unsigned int, SPGroup::LayerMode>();
138 }
140 static void sp_group_build(SPObject *object, SPDocument *document, Inkscape::XML::Node *repr)
141 {
142 sp_object_read_attr(object, "inkscape:groupmode");
144 if (((SPObjectClass *)parent_class)->build) {
145 ((SPObjectClass *)parent_class)->build(object, document, repr);
146 }
147 }
149 static void sp_group_release(SPObject *object) {
150 if ( SP_GROUP(object)->_layer_mode == SPGroup::LAYER ) {
151 sp_document_remove_resource(SP_OBJECT_DOCUMENT(object), "layer", object);
152 }
153 if (((SPObjectClass *)parent_class)->release) {
154 ((SPObjectClass *)parent_class)->release(object);
155 }
156 }
158 static void
159 sp_group_dispose(GObject *object)
160 {
161 SP_GROUP(object)->_display_modes.~map();
162 delete SP_GROUP(object)->group;
163 }
165 static void
166 sp_group_child_added (SPObject *object, Inkscape::XML::Node *child, Inkscape::XML::Node *ref)
167 {
168 SPItem *item;
170 item = SP_ITEM (object);
172 if (((SPObjectClass *) (parent_class))->child_added)
173 (* ((SPObjectClass *) (parent_class))->child_added) (object, child, ref);
175 SP_GROUP(object)->group->onChildAdded(child);
176 }
178 /* fixme: hide (Lauris) */
180 static void
181 sp_group_remove_child (SPObject * object, Inkscape::XML::Node * child)
182 {
183 if (((SPObjectClass *) (parent_class))->remove_child)
184 (* ((SPObjectClass *) (parent_class))->remove_child) (object, child);
186 SP_GROUP(object)->group->onChildRemoved(child);
187 }
189 static void
190 sp_group_order_changed (SPObject *object, Inkscape::XML::Node *child, Inkscape::XML::Node *old_ref, Inkscape::XML::Node *new_ref)
191 {
192 if (((SPObjectClass *) (parent_class))->order_changed)
193 (* ((SPObjectClass *) (parent_class))->order_changed) (object, child, old_ref, new_ref);
195 SP_GROUP(object)->group->onOrderChanged(child, old_ref, new_ref);
196 }
198 static void
199 sp_group_update (SPObject *object, SPCtx *ctx, unsigned int flags)
200 {
201 if (((SPObjectClass *) (parent_class))->update)
202 ((SPObjectClass *) (parent_class))->update (object, ctx, flags);
204 SP_GROUP(object)->group->onUpdate(ctx, flags);
205 }
207 static void
208 sp_group_modified (SPObject *object, guint flags)
209 {
210 SP_GROUP(object)->group->onModified(flags);
211 }
213 static Inkscape::XML::Node *
214 sp_group_write (SPObject *object, Inkscape::XML::Node *repr, guint flags)
215 {
216 SPGroup *group;
217 SPObject *child;
218 Inkscape::XML::Node *crepr;
220 group = SP_GROUP (object);
222 if (flags & SP_OBJECT_WRITE_BUILD) {
223 GSList *l;
224 if (!repr) {
225 Inkscape::XML::Document *xml_doc = sp_document_repr_doc(SP_OBJECT_DOCUMENT(object));
226 repr = xml_doc->createElement("svg:g");
227 }
228 l = NULL;
229 for (child = sp_object_first_child(object); child != NULL; child = SP_OBJECT_NEXT(child) ) {
230 crepr = child->updateRepr(NULL, flags);
231 if (crepr) l = g_slist_prepend (l, crepr);
232 }
233 while (l) {
234 repr->addChild((Inkscape::XML::Node *) l->data, NULL);
235 Inkscape::GC::release((Inkscape::XML::Node *) l->data);
236 l = g_slist_remove (l, l->data);
237 }
238 } else {
239 for (child = sp_object_first_child(object) ; child != NULL; child = SP_OBJECT_NEXT(child) ) {
240 child->updateRepr(flags);
241 }
242 }
244 if ( flags & SP_OBJECT_WRITE_EXT ) {
245 const char *value;
246 if ( group->_layer_mode == SPGroup::LAYER ) {
247 value = "layer";
248 } else if ( flags & SP_OBJECT_WRITE_ALL ) {
249 value = "group";
250 } else {
251 value = NULL;
252 }
253 repr->setAttribute("inkscape:groupmode", value);
254 }
256 if (((SPObjectClass *) (parent_class))->write)
257 ((SPObjectClass *) (parent_class))->write (object, repr, flags);
259 return repr;
260 }
262 static void
263 sp_group_bbox(SPItem const *item, NRRect *bbox, NR::Matrix const &transform, unsigned const flags)
264 {
265 SP_GROUP(item)->group->calculateBBox(bbox, transform, flags);
266 }
268 static void
269 sp_group_print (SPItem * item, SPPrintContext *ctx)
270 {
271 SP_GROUP(item)->group->onPrint(ctx);
272 }
274 static gchar * sp_group_description (SPItem * item)
275 {
276 return SP_GROUP(item)->group->getDescription();
277 }
279 static NR::Matrix
280 sp_group_set_transform(SPItem *item, NR::Matrix const &xform)
281 {
282 Inkscape::Selection *selection = sp_desktop_selection(inkscape_active_desktop());
283 persp3d_split_perspectives_according_to_selection(selection);
285 NR::Matrix last_trans;
286 sp_svg_transform_read(SP_OBJECT_REPR(item)->attribute("transform"), &last_trans);
287 NR::Matrix inc_trans = last_trans.inverse()*xform;
289 std::list<Persp3D *> plist = selection->perspList();
290 for (std::list<Persp3D *>::iterator i = plist.begin(); i != plist.end(); ++i) {
291 persp3d_apply_affine_transformation(*i, inc_trans);
292 }
294 return xform;
295 }
297 static void sp_group_set(SPObject *object, unsigned key, char const *value) {
298 SPGroup *group = SP_GROUP(object);
300 switch (key) {
301 case SP_ATTR_INKSCAPE_GROUPMODE:
302 if ( value && !strcmp(value, "layer") ) {
303 group->setLayerMode(SPGroup::LAYER);
304 } else {
305 group->setLayerMode(SPGroup::GROUP);
306 }
307 break;
308 default: {
309 if (((SPObjectClass *) (parent_class))->set) {
310 (* ((SPObjectClass *) (parent_class))->set)(object, key, value);
311 }
312 }
313 }
314 }
316 static NRArenaItem *
317 sp_group_show (SPItem *item, NRArena *arena, unsigned int key, unsigned int flags)
318 {
319 return SP_GROUP(item)->group->show(arena, key, flags);
320 }
322 static void
323 sp_group_hide (SPItem *item, unsigned int key)
324 {
325 SP_GROUP(item)->group->hide(key);
326 }
328 static void sp_group_snappoints (SPItem const *item, SnapPointsIter p)
329 {
330 for (SPObject const *o = sp_object_first_child(SP_OBJECT(item));
331 o != NULL;
332 o = SP_OBJECT_NEXT(o))
333 {
334 if (SP_IS_ITEM(o)) {
335 sp_item_snappoints(SP_ITEM(o), false, p);
336 }
337 }
338 }
341 void
342 sp_item_group_ungroup (SPGroup *group, GSList **children, bool do_done)
343 {
344 g_return_if_fail (group != NULL);
345 g_return_if_fail (SP_IS_GROUP (group));
347 SPDocument *doc = SP_OBJECT_DOCUMENT (group);
348 SPObject *root = SP_DOCUMENT_ROOT (doc);
349 SPObject *defs = SP_OBJECT (SP_ROOT (root)->defs);
351 SPItem *gitem = SP_ITEM (group);
352 Inkscape::XML::Node *grepr = SP_OBJECT_REPR (gitem);
354 g_return_if_fail (!strcmp (grepr->name(), "svg:g") || !strcmp (grepr->name(), "svg:a") || !strcmp (grepr->name(), "svg:switch"));
356 // this converts the gradient/pattern fill/stroke on the group, if any, to userSpaceOnUse
357 sp_item_adjust_paint_recursive (gitem, NR::identity(), NR::identity(), false);
359 SPItem *pitem = SP_ITEM (SP_OBJECT_PARENT (gitem));
360 Inkscape::XML::Node *prepr = SP_OBJECT_REPR (pitem);
362 if (SP_IS_BOX3D(gitem)) {
363 grepr = box3d_convert_to_group(SP_BOX3D(gitem));
364 if (grepr) {
365 gitem = SP_ITEM(doc->getObjectByRepr(grepr));
366 group = SP_GROUP(gitem);
367 }
368 }
370 sp_lpe_item_remove_path_effect(SP_LPE_ITEM(group), false);
372 /* Step 1 - generate lists of children objects */
373 GSList *items = NULL;
374 GSList *objects = NULL;
375 for (SPObject *child = sp_object_first_child(SP_OBJECT(group)) ; child != NULL; child = SP_OBJECT_NEXT(child) ) {
377 if (SP_IS_ITEM (child)) {
379 SPItem *citem = SP_ITEM (child);
381 /* Merging of style */
382 // this converts the gradient/pattern fill/stroke, if any, to userSpaceOnUse; we need to do
383 // it here _before_ the new transform is set, so as to use the pre-transform bbox
384 sp_item_adjust_paint_recursive (citem, NR::identity(), NR::identity(), false);
386 sp_style_merge_from_dying_parent(SP_OBJECT_STYLE(child), SP_OBJECT_STYLE(gitem));
387 /*
388 * fixme: We currently make no allowance for the case where child is cloned
389 * and the group has any style settings.
390 *
391 * (This should never occur with documents created solely with the current
392 * version of inkscape without using the XML editor: we usually apply group
393 * style changes to children rather than to the group itself.)
394 *
395 * If the group has no style settings, then
396 * sp_style_merge_from_dying_parent should be a no-op. Otherwise (i.e. if
397 * we change the child's style to compensate for its parent going away)
398 * then those changes will typically be reflected in any clones of child,
399 * whereas we'd prefer for Ungroup not to affect the visual appearance.
400 *
401 * The only way of preserving styling appearance in general is for child to
402 * be put into a new group -- a somewhat surprising response to an Ungroup
403 * command. We could add a new groupmode:transparent that would mostly
404 * hide the existence of such groups from the user (i.e. editing behaves as
405 * if the transparent group's children weren't in a group), though that's
406 * extra complication & maintenance burden and this case is rare.
407 */
409 child->updateRepr();
411 Inkscape::XML::Node *nrepr = SP_OBJECT_REPR (child)->duplicate(prepr->document());
413 // Merging transform
414 NR::Matrix ctrans;
415 NR::Matrix const g(gitem->transform);
416 if (SP_IS_USE(citem) && sp_use_get_original (SP_USE(citem)) &&
417 SP_OBJECT_PARENT (sp_use_get_original (SP_USE(citem))) == SP_OBJECT(group)) {
418 // make sure a clone's effective transform is the same as was under group
419 ctrans = g.inverse() * citem->transform * g;
420 } else {
421 ctrans = citem->transform * g;
422 }
424 // FIXME: constructing a transform that would fully preserve the appearance of a
425 // textpath if it is ungrouped with its path seems to be impossible in general
426 // case. E.g. if the group was squeezed, to keep the ungrouped textpath squeezed
427 // as well, we'll need to relink it to some "virtual" path which is inversely
428 // stretched relative to the actual path, and then squeeze the textpath back so it
429 // would both fit the actual path _and_ be squeezed as before. It's a bummer.
431 // This is just a way to temporarily remember the transform in repr. When repr is
432 // reattached outside of the group, the transform will be written more properly
433 // (i.e. optimized into the object if the corresponding preference is set)
434 gchar *affinestr=sp_svg_transform_write(ctrans);
435 nrepr->setAttribute("transform", affinestr);
436 g_free(affinestr);
438 items = g_slist_prepend (items, nrepr);
440 } else {
441 Inkscape::XML::Node *nrepr = SP_OBJECT_REPR (child)->duplicate(prepr->document());
442 objects = g_slist_prepend (objects, nrepr);
443 }
444 }
446 /* Step 2 - clear group */
447 // remember the position of the group
448 gint pos = SP_OBJECT_REPR(group)->position();
450 // the group is leaving forever, no heir, clones should take note; its children however are going to reemerge
451 SP_OBJECT (group)->deleteObject(true, false);
453 /* Step 3 - add nonitems */
454 if (objects) {
455 Inkscape::XML::Node *last_def = SP_OBJECT_REPR(defs)->lastChild();
456 while (objects) {
457 SP_OBJECT_REPR(defs)->addChild((Inkscape::XML::Node *) objects->data, last_def);
458 Inkscape::GC::release((Inkscape::XML::Node *) objects->data);
459 objects = g_slist_remove (objects, objects->data);
460 }
461 }
463 /* Step 4 - add items */
464 while (items) {
465 Inkscape::XML::Node *repr = (Inkscape::XML::Node *) items->data;
466 // add item
467 prepr->appendChild(repr);
468 // restore position; since the items list was prepended (i.e. reverse), we now add
469 // all children at the same pos, which inverts the order once again
470 repr->setPosition(pos > 0 ? pos : 0);
472 // fill in the children list if non-null
473 SPItem *item = (SPItem *) doc->getObjectByRepr(repr);
475 sp_item_write_transform(item, repr, item->transform, NULL, false);
477 Inkscape::GC::release(repr);
478 if (children && SP_IS_ITEM (item))
479 *children = g_slist_prepend (*children, item);
481 items = g_slist_remove (items, items->data);
482 }
484 if (do_done)
485 sp_document_done (doc, SP_VERB_NONE, _("Ungroup"));
486 }
488 /*
489 * some API for list aspect of SPGroup
490 */
492 GSList *
493 sp_item_group_item_list (SPGroup * group)
494 {
495 GSList *s;
496 SPObject *o;
498 g_return_val_if_fail (group != NULL, NULL);
499 g_return_val_if_fail (SP_IS_GROUP (group), NULL);
501 s = NULL;
503 for ( o = sp_object_first_child(SP_OBJECT(group)) ; o != NULL ; o = SP_OBJECT_NEXT(o) ) {
504 if (SP_IS_ITEM (o)) {
505 s = g_slist_prepend (s, o);
506 }
507 }
509 return g_slist_reverse (s);
510 }
512 SPObject *
513 sp_item_group_get_child_by_name (SPGroup *group, SPObject *ref, const gchar *name)
514 {
515 SPObject *child;
516 child = (ref) ? SP_OBJECT_NEXT(ref) : sp_object_first_child(SP_OBJECT(group));
517 while ( child && strcmp (SP_OBJECT_REPR(child)->name(), name) ) {
518 child = SP_OBJECT_NEXT(child);
519 }
520 return child;
521 }
523 void SPGroup::setLayerMode(LayerMode mode) {
524 if ( _layer_mode != mode ) {
525 if ( mode == LAYER ) {
526 sp_document_add_resource(SP_OBJECT_DOCUMENT(this), "layer", this);
527 } else {
528 sp_document_remove_resource(SP_OBJECT_DOCUMENT(this), "layer", this);
529 }
530 _layer_mode = mode;
531 _updateLayerMode();
532 }
533 }
535 SPGroup::LayerMode SPGroup::layerDisplayMode(unsigned int dkey) const {
536 std::map<unsigned int, LayerMode>::const_iterator iter;
537 iter = _display_modes.find(dkey);
538 if ( iter != _display_modes.end() ) {
539 return (*iter).second;
540 } else {
541 return GROUP;
542 }
543 }
545 void SPGroup::setLayerDisplayMode(unsigned int dkey, SPGroup::LayerMode mode) {
546 if ( layerDisplayMode(dkey) != mode ) {
547 _display_modes[dkey] = mode;
548 _updateLayerMode(dkey);
549 }
550 }
552 void SPGroup::_updateLayerMode(unsigned int display_key) {
553 SPItemView *view;
554 for ( view = this->display ; view ; view = view->next ) {
555 if ( !display_key || view->key == display_key ) {
556 NRArenaGroup *arena_group=NR_ARENA_GROUP(view->arenaitem);
557 if (arena_group) {
558 nr_arena_group_set_transparent(arena_group, effectiveLayerMode(view->key) == SPGroup::LAYER);
559 }
560 }
561 }
562 }
564 void SPGroup::translateChildItems(NR::translate const &tr)
565 {
566 if (this->hasChildren())
567 {
568 SPObject *o = NULL;
569 for (o = sp_object_first_child(SP_OBJECT(this)) ; o != NULL ; o = SP_OBJECT_NEXT(o) ) {
570 if (SP_IS_ITEM (o)) {
571 sp_item_move_rel(static_cast<SPItem *>(o), tr);
572 }
573 }
574 }
575 }
577 CGroup::CGroup(SPGroup *group) {
578 _group = group;
579 }
581 CGroup::~CGroup() {
582 }
584 void CGroup::onChildAdded(Inkscape::XML::Node *child) {
585 SPObject *last_child = _group->lastChild();
586 if (last_child && SP_OBJECT_REPR(last_child) == child) {
587 // optimization for the common special case where the child is being added at the end
588 SPObject *ochild = last_child;
589 if ( SP_IS_ITEM(ochild) ) {
590 /* TODO: this should be moved into SPItem somehow */
591 SPItemView *v;
592 NRArenaItem *ac;
594 for (v = _group->display; v != NULL; v = v->next) {
595 ac = sp_item_invoke_show (SP_ITEM (ochild), NR_ARENA_ITEM_ARENA (v->arenaitem), v->key, v->flags);
597 if (ac) {
598 nr_arena_item_append_child (v->arenaitem, ac);
599 nr_arena_item_unref (ac);
600 }
601 }
602 }
603 } else { // general case
604 SPObject *ochild = sp_object_get_child_by_repr(_group, child);
605 if ( ochild && SP_IS_ITEM(ochild) ) {
606 /* TODO: this should be moved into SPItem somehow */
607 SPItemView *v;
608 NRArenaItem *ac;
610 unsigned position = sp_item_pos_in_parent(SP_ITEM(ochild));
612 for (v = _group->display; v != NULL; v = v->next) {
613 ac = sp_item_invoke_show (SP_ITEM (ochild), NR_ARENA_ITEM_ARENA (v->arenaitem), v->key, v->flags);
615 if (ac) {
616 nr_arena_item_add_child (v->arenaitem, ac, NULL);
617 nr_arena_item_set_order (ac, position);
618 nr_arena_item_unref (ac);
619 }
620 }
621 }
622 }
624 _group->requestModified(SP_OBJECT_MODIFIED_FLAG);
625 }
627 void CGroup::onChildRemoved(Inkscape::XML::Node */*child*/) {
628 _group->requestModified(SP_OBJECT_MODIFIED_FLAG);
629 }
631 void CGroup::onUpdate(SPCtx *ctx, unsigned int flags) {
632 SPItemCtx *ictx, cctx;
634 ictx = (SPItemCtx *) ctx;
635 cctx = *ictx;
637 if (flags & SP_OBJECT_MODIFIED_FLAG) {
638 flags |= SP_OBJECT_PARENT_MODIFIED_FLAG;
639 }
641 flags &= SP_OBJECT_MODIFIED_CASCADE;
643 if (flags & SP_OBJECT_STYLE_MODIFIED_FLAG) {
644 SPObject *object = SP_OBJECT(_group);
645 for (SPItemView *v = SP_ITEM(_group)->display; v != NULL; v = v->next) {
646 nr_arena_group_set_style(NR_ARENA_GROUP(v->arenaitem), SP_OBJECT_STYLE(object));
647 }
648 }
650 GSList *l = g_slist_reverse(_group->childList(true, SPObject::ActionUpdate));
651 while (l) {
652 SPObject *child = SP_OBJECT (l->data);
653 l = g_slist_remove (l, child);
654 if (flags || (child->uflags & (SP_OBJECT_MODIFIED_FLAG | SP_OBJECT_CHILD_MODIFIED_FLAG))) {
655 if (SP_IS_ITEM (child)) {
656 SPItem const &chi = *SP_ITEM(child);
657 cctx.i2doc = chi.transform * ictx->i2doc;
658 cctx.i2vp = chi.transform * ictx->i2vp;
659 child->updateDisplay((SPCtx *)&cctx, flags);
660 } else {
661 child->updateDisplay(ctx, flags);
662 }
663 }
664 g_object_unref (G_OBJECT (child));
665 }
666 }
668 void CGroup::onModified(guint flags) {
669 SPObject *child;
671 if (flags & SP_OBJECT_MODIFIED_FLAG) flags |= SP_OBJECT_PARENT_MODIFIED_FLAG;
672 flags &= SP_OBJECT_MODIFIED_CASCADE;
674 if (flags & SP_OBJECT_STYLE_MODIFIED_FLAG) {
675 SPObject *object = SP_OBJECT(_group);
676 for (SPItemView *v = SP_ITEM(_group)->display; v != NULL; v = v->next) {
677 nr_arena_group_set_style(NR_ARENA_GROUP(v->arenaitem), SP_OBJECT_STYLE(object));
678 }
679 }
681 GSList *l = g_slist_reverse(_group->childList(true));
682 while (l) {
683 child = SP_OBJECT (l->data);
684 l = g_slist_remove (l, child);
685 if (flags || (child->mflags & (SP_OBJECT_MODIFIED_FLAG | SP_OBJECT_CHILD_MODIFIED_FLAG))) {
686 child->emitModified(flags);
687 }
688 g_object_unref (G_OBJECT (child));
689 }
690 }
692 void CGroup::calculateBBox(NRRect *bbox, NR::Matrix const &transform, unsigned const flags) {
694 NR::Maybe<NR::Rect> dummy_bbox = NR::Nothing();
696 GSList *l = _group->childList(false, SPObject::ActionBBox);
697 while (l) {
698 SPObject *o = SP_OBJECT (l->data);
699 if (SP_IS_ITEM(o)) {
700 SPItem *child = SP_ITEM(o);
701 NR::Matrix const ct(child->transform * transform);
702 sp_item_invoke_bbox_full(child, &dummy_bbox, ct, flags, FALSE);
703 }
704 l = g_slist_remove (l, o);
705 }
707 *bbox = NRRect(dummy_bbox);
708 }
710 void CGroup::onPrint(SPPrintContext *ctx) {
711 GSList *l = g_slist_reverse(_group->childList(false));
712 while (l) {
713 SPObject *o = SP_OBJECT (l->data);
714 if (SP_IS_ITEM(o)) {
715 sp_item_invoke_print (SP_ITEM (o), ctx);
716 }
717 l = g_slist_remove (l, o);
718 }
719 }
721 gint CGroup::getItemCount() {
722 gint len = 0;
723 for (SPObject *o = sp_object_first_child(SP_OBJECT(_group)) ; o != NULL ; o = SP_OBJECT_NEXT(o) ) {
724 if (SP_IS_ITEM(o)) {
725 len++;
726 }
727 }
729 return len;
730 }
732 gchar *CGroup::getDescription() {
733 gint len = getItemCount();
734 return g_strdup_printf(
735 ngettext("<b>Group</b> of <b>%d</b> object",
736 "<b>Group</b> of <b>%d</b> objects",
737 len), len);
738 }
740 NRArenaItem *CGroup::show (NRArena *arena, unsigned int key, unsigned int flags) {
741 NRArenaItem *ai;
742 SPObject *object = SP_OBJECT(_group);
744 ai = NRArenaGroup::create(arena);
746 nr_arena_group_set_transparent(NR_ARENA_GROUP (ai),
747 _group->effectiveLayerMode(key) ==
748 SPGroup::LAYER);
749 nr_arena_group_set_style(NR_ARENA_GROUP(ai), SP_OBJECT_STYLE(object));
751 _showChildren(arena, ai, key, flags);
752 return ai;
753 }
755 void CGroup::_showChildren (NRArena *arena, NRArenaItem *ai, unsigned int key, unsigned int flags) {
756 NRArenaItem *ac = NULL;
757 NRArenaItem *ar = NULL;
758 SPItem * child = NULL;
759 GSList *l = g_slist_reverse(_group->childList(false, SPObject::ActionShow));
760 while (l) {
761 SPObject *o = SP_OBJECT (l->data);
762 if (SP_IS_ITEM (o)) {
763 child = SP_ITEM (o);
764 ac = sp_item_invoke_show (child, arena, key, flags);
765 if (ac) {
766 nr_arena_item_add_child (ai, ac, ar);
767 ar = ac;
768 nr_arena_item_unref (ac);
769 }
770 }
771 l = g_slist_remove (l, o);
772 }
773 }
775 void CGroup::hide (unsigned int key) {
776 SPItem * child;
778 GSList *l = g_slist_reverse(_group->childList(false, SPObject::ActionShow));
779 while (l) {
780 SPObject *o = SP_OBJECT (l->data);
781 if (SP_IS_ITEM (o)) {
782 child = SP_ITEM (o);
783 sp_item_invoke_hide (child, key);
784 }
785 l = g_slist_remove (l, o);
786 }
788 if (((SPItemClass *) parent_class)->hide)
789 ((SPItemClass *) parent_class)->hide (_group, key);
790 }
792 void CGroup::onOrderChanged (Inkscape::XML::Node *child, Inkscape::XML::Node *, Inkscape::XML::Node *)
793 {
794 SPObject *ochild = sp_object_get_child_by_repr(_group, child);
795 if ( ochild && SP_IS_ITEM(ochild) ) {
796 /* TODO: this should be moved into SPItem somehow */
797 SPItemView *v;
798 unsigned position = sp_item_pos_in_parent(SP_ITEM(ochild));
799 for ( v = SP_ITEM (ochild)->display ; v != NULL ; v = v->next ) {
800 nr_arena_item_set_order (v->arenaitem, position);
801 }
802 }
804 _group->requestModified(SP_OBJECT_MODIFIED_FLAG);
805 }
807 static void
808 sp_group_update_patheffect (SPLPEItem *lpeitem, bool write)
809 {
810 #ifdef GROUP_VERBOSE
811 g_message("sp_group_update_patheffect: %p\n", lpeitem);
812 #endif
813 g_return_if_fail (lpeitem != NULL);
814 g_return_if_fail (SP_IS_GROUP (lpeitem));
816 GSList const *item_list = sp_item_group_item_list(SP_GROUP(lpeitem));
817 for ( GSList const *iter = item_list; iter; iter = iter->next ) {
818 SPObject *subitem = static_cast<SPObject *>(iter->data);
819 if (SP_IS_LPE_ITEM(subitem)) {
820 sp_lpe_item_update_patheffect(SP_LPE_ITEM(subitem), true);
821 }
822 }
823 }
826 /*
827 Local Variables:
828 mode:c++
829 c-file-style:"stroustrup"
830 c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
831 indent-tabs-mode:nil
832 fill-column:99
833 End:
834 */
835 // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4 :