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 SPItemClass * parent_class;
70 GType
71 sp_group_get_type (void)
72 {
73 static GType group_type = 0;
74 if (!group_type) {
75 GTypeInfo group_info = {
76 sizeof (SPGroupClass),
77 NULL, /* base_init */
78 NULL, /* base_finalize */
79 (GClassInitFunc) sp_group_class_init,
80 NULL, /* class_finalize */
81 NULL, /* class_data */
82 sizeof (SPGroup),
83 16, /* n_preallocs */
84 (GInstanceInitFunc) sp_group_init,
85 NULL, /* value_table */
86 };
87 group_type = g_type_register_static (SP_TYPE_ITEM, "SPGroup", &group_info, (GTypeFlags)0);
88 }
89 return group_type;
90 }
92 static void
93 sp_group_class_init (SPGroupClass *klass)
94 {
95 GObjectClass * object_class;
96 SPObjectClass * sp_object_class;
97 SPItemClass * item_class;
99 object_class = (GObjectClass *) klass;
100 sp_object_class = (SPObjectClass *) klass;
101 item_class = (SPItemClass *) klass;
103 parent_class = (SPItemClass *)g_type_class_ref (SP_TYPE_ITEM);
105 object_class->dispose = sp_group_dispose;
107 sp_object_class->child_added = sp_group_child_added;
108 sp_object_class->remove_child = sp_group_remove_child;
109 sp_object_class->order_changed = sp_group_order_changed;
110 sp_object_class->update = sp_group_update;
111 sp_object_class->modified = sp_group_modified;
112 sp_object_class->set = sp_group_set;
113 sp_object_class->write = sp_group_write;
114 sp_object_class->release = sp_group_release;
115 sp_object_class->build = sp_group_build;
117 item_class->bbox = sp_group_bbox;
118 item_class->print = sp_group_print;
119 item_class->description = sp_group_description;
120 item_class->set_transform = sp_group_set_transform;
121 item_class->show = sp_group_show;
122 item_class->hide = sp_group_hide;
123 item_class->snappoints = sp_group_snappoints;
124 }
126 static void
127 sp_group_init (SPGroup *group)
128 {
129 group->_layer_mode = SPGroup::GROUP;
130 group->group = new CGroup(group);
131 new (&group->_display_modes) std::map<unsigned int, SPGroup::LayerMode>();
132 }
134 static void sp_group_build(SPObject *object, SPDocument *document, Inkscape::XML::Node *repr)
135 {
136 sp_object_read_attr(object, "inkscape:groupmode");
138 if (((SPObjectClass *)parent_class)->build) {
139 ((SPObjectClass *)parent_class)->build(object, document, repr);
140 }
141 }
143 static void sp_group_release(SPObject *object) {
144 if ( SP_GROUP(object)->_layer_mode == SPGroup::LAYER ) {
145 sp_document_remove_resource(SP_OBJECT_DOCUMENT(object), "layer", object);
146 }
147 if (((SPObjectClass *)parent_class)->release) {
148 ((SPObjectClass *)parent_class)->release(object);
149 }
150 }
152 static void
153 sp_group_dispose(GObject *object)
154 {
155 SP_GROUP(object)->_display_modes.~map();
156 delete SP_GROUP(object)->group;
157 }
159 static void
160 sp_group_child_added (SPObject *object, Inkscape::XML::Node *child, Inkscape::XML::Node *ref)
161 {
162 SPItem *item;
164 item = SP_ITEM (object);
166 if (((SPObjectClass *) (parent_class))->child_added)
167 (* ((SPObjectClass *) (parent_class))->child_added) (object, child, ref);
169 SP_GROUP(object)->group->onChildAdded(child);
170 }
172 /* fixme: hide (Lauris) */
174 static void
175 sp_group_remove_child (SPObject * object, Inkscape::XML::Node * child)
176 {
177 if (((SPObjectClass *) (parent_class))->remove_child)
178 (* ((SPObjectClass *) (parent_class))->remove_child) (object, child);
180 SP_GROUP(object)->group->onChildRemoved(child);
181 }
183 static void
184 sp_group_order_changed (SPObject *object, Inkscape::XML::Node *child, Inkscape::XML::Node *old_ref, Inkscape::XML::Node *new_ref)
185 {
186 if (((SPObjectClass *) (parent_class))->order_changed)
187 (* ((SPObjectClass *) (parent_class))->order_changed) (object, child, old_ref, new_ref);
189 SP_GROUP(object)->group->onOrderChanged(child, old_ref, new_ref);
190 }
192 static void
193 sp_group_update (SPObject *object, SPCtx *ctx, unsigned int flags)
194 {
195 if (((SPObjectClass *) (parent_class))->update)
196 ((SPObjectClass *) (parent_class))->update (object, ctx, flags);
198 SP_GROUP(object)->group->onUpdate(ctx, flags);
199 }
201 static void
202 sp_group_modified (SPObject *object, guint flags)
203 {
204 SP_GROUP(object)->group->onModified(flags);
205 }
207 static Inkscape::XML::Node *
208 sp_group_write (SPObject *object, Inkscape::XML::Node *repr, guint flags)
209 {
210 SPGroup *group;
211 SPObject *child;
212 Inkscape::XML::Node *crepr;
214 group = SP_GROUP (object);
216 if (flags & SP_OBJECT_WRITE_BUILD) {
217 GSList *l;
218 if (!repr) {
219 Inkscape::XML::Document *xml_doc = sp_document_repr_doc(SP_OBJECT_DOCUMENT(object));
220 repr = xml_doc->createElement("svg:g");
221 }
222 l = NULL;
223 for (child = sp_object_first_child(object); child != NULL; child = SP_OBJECT_NEXT(child) ) {
224 crepr = child->updateRepr(NULL, flags);
225 if (crepr) l = g_slist_prepend (l, crepr);
226 }
227 while (l) {
228 repr->addChild((Inkscape::XML::Node *) l->data, NULL);
229 Inkscape::GC::release((Inkscape::XML::Node *) l->data);
230 l = g_slist_remove (l, l->data);
231 }
232 } else {
233 for (child = sp_object_first_child(object) ; child != NULL; child = SP_OBJECT_NEXT(child) ) {
234 child->updateRepr(flags);
235 }
236 }
238 if ( flags & SP_OBJECT_WRITE_EXT ) {
239 const char *value;
240 if ( group->_layer_mode == SPGroup::LAYER ) {
241 value = "layer";
242 } else if ( flags & SP_OBJECT_WRITE_ALL ) {
243 value = "group";
244 } else {
245 value = NULL;
246 }
247 repr->setAttribute("inkscape:groupmode", value);
248 }
250 if (((SPObjectClass *) (parent_class))->write)
251 ((SPObjectClass *) (parent_class))->write (object, repr, flags);
253 return repr;
254 }
256 static void
257 sp_group_bbox(SPItem const *item, NRRect *bbox, NR::Matrix const &transform, unsigned const flags)
258 {
259 SP_GROUP(item)->group->calculateBBox(bbox, transform, flags);
260 }
262 static void
263 sp_group_print (SPItem * item, SPPrintContext *ctx)
264 {
265 SP_GROUP(item)->group->onPrint(ctx);
266 }
268 static gchar * sp_group_description (SPItem * item)
269 {
270 return SP_GROUP(item)->group->getDescription();
271 }
273 static NR::Matrix
274 sp_group_set_transform(SPItem *item, NR::Matrix const &xform)
275 {
276 Inkscape::Selection *selection = sp_desktop_selection(inkscape_active_desktop());
277 persp3d_split_perspectives_according_to_selection(selection);
279 NR::Matrix last_trans;
280 sp_svg_transform_read(SP_OBJECT_REPR(item)->attribute("transform"), &last_trans);
281 NR::Matrix inc_trans = last_trans.inverse()*xform;
283 std::list<Persp3D *> plist = selection->perspList();
284 for (std::list<Persp3D *>::iterator i = plist.begin(); i != plist.end(); ++i) {
285 persp3d_apply_affine_transformation(*i, inc_trans);
286 }
288 return xform;
289 }
291 static void sp_group_set(SPObject *object, unsigned key, char const *value) {
292 SPGroup *group=SP_GROUP(object);
294 switch (key) {
295 case SP_ATTR_INKSCAPE_GROUPMODE: {
296 if ( value && !strcmp(value, "layer") ) {
297 group->setLayerMode(SPGroup::LAYER);
298 } else {
299 group->setLayerMode(SPGroup::GROUP);
300 }
301 } break;
302 default: {
303 if (((SPObjectClass *) (parent_class))->set) {
304 (* ((SPObjectClass *) (parent_class))->set)(object, key, value);
305 }
306 }
307 }
308 }
310 static NRArenaItem *
311 sp_group_show (SPItem *item, NRArena *arena, unsigned int key, unsigned int flags)
312 {
313 return SP_GROUP(item)->group->show(arena, key, flags);
314 }
316 static void
317 sp_group_hide (SPItem *item, unsigned int key)
318 {
319 SP_GROUP(item)->group->hide(key);
320 }
322 static void sp_group_snappoints (SPItem const *item, SnapPointsIter p)
323 {
324 for (SPObject const *o = sp_object_first_child(SP_OBJECT(item));
325 o != NULL;
326 o = SP_OBJECT_NEXT(o))
327 {
328 if (SP_IS_ITEM(o)) {
329 sp_item_snappoints(SP_ITEM(o), false, p);
330 }
331 }
332 }
335 void
336 sp_item_group_ungroup (SPGroup *group, GSList **children, bool do_done)
337 {
338 g_return_if_fail (group != NULL);
339 g_return_if_fail (SP_IS_GROUP (group));
341 SPDocument *doc = SP_OBJECT_DOCUMENT (group);
342 SPObject *root = SP_DOCUMENT_ROOT (doc);
343 SPObject *defs = SP_OBJECT (SP_ROOT (root)->defs);
345 SPItem *gitem = SP_ITEM (group);
346 Inkscape::XML::Node *grepr = SP_OBJECT_REPR (gitem);
348 g_return_if_fail (!strcmp (grepr->name(), "svg:g") || !strcmp (grepr->name(), "svg:a") || !strcmp (grepr->name(), "svg:switch"));
350 // this converts the gradient/pattern fill/stroke on the group, if any, to userSpaceOnUse
351 sp_item_adjust_paint_recursive (gitem, NR::identity(), NR::identity(), false);
353 SPItem *pitem = SP_ITEM (SP_OBJECT_PARENT (gitem));
354 Inkscape::XML::Node *prepr = SP_OBJECT_REPR (pitem);
356 if (SP_IS_BOX3D(gitem)) {
357 grepr = box3d_convert_to_group(SP_BOX3D(gitem));
358 if (grepr) {
359 gitem = SP_ITEM(doc->getObjectByRepr(grepr));
360 group = SP_GROUP(gitem);
361 }
362 }
364 /* Step 1 - generate lists of children objects */
365 GSList *items = NULL;
366 GSList *objects = NULL;
367 for (SPObject *child = sp_object_first_child(SP_OBJECT(group)) ; child != NULL; child = SP_OBJECT_NEXT(child) ) {
369 if (SP_IS_ITEM (child)) {
371 SPItem *citem = SP_ITEM (child);
373 /* Merging of style */
374 // this converts the gradient/pattern fill/stroke, if any, to userSpaceOnUse; we need to do
375 // it here _before_ the new transform is set, so as to use the pre-transform bbox
376 sp_item_adjust_paint_recursive (citem, NR::identity(), NR::identity(), false);
378 sp_style_merge_from_dying_parent(SP_OBJECT_STYLE(child), SP_OBJECT_STYLE(gitem));
379 /*
380 * fixme: We currently make no allowance for the case where child is cloned
381 * and the group has any style settings.
382 *
383 * (This should never occur with documents created solely with the current
384 * version of inkscape without using the XML editor: we usually apply group
385 * style changes to children rather than to the group itself.)
386 *
387 * If the group has no style settings, then
388 * sp_style_merge_from_dying_parent should be a no-op. Otherwise (i.e. if
389 * we change the child's style to compensate for its parent going away)
390 * then those changes will typically be reflected in any clones of child,
391 * whereas we'd prefer for Ungroup not to affect the visual appearance.
392 *
393 * The only way of preserving styling appearance in general is for child to
394 * be put into a new group -- a somewhat surprising response to an Ungroup
395 * command. We could add a new groupmode:transparent that would mostly
396 * hide the existence of such groups from the user (i.e. editing behaves as
397 * if the transparent group's children weren't in a group), though that's
398 * extra complication & maintenance burden and this case is rare.
399 */
401 child->updateRepr();
403 Inkscape::XML::Node *nrepr = SP_OBJECT_REPR (child)->duplicate(prepr->document());
405 // Merging transform
406 NR::Matrix ctrans;
407 NR::Matrix const g(gitem->transform);
408 if (SP_IS_USE(citem) && sp_use_get_original (SP_USE(citem)) &&
409 SP_OBJECT_PARENT (sp_use_get_original (SP_USE(citem))) == SP_OBJECT(group)) {
410 // make sure a clone's effective transform is the same as was under group
411 ctrans = g.inverse() * citem->transform * g;
412 } else {
413 ctrans = citem->transform * g;
414 }
416 // FIXME: constructing a transform that would fully preserve the appearance of a
417 // textpath if it is ungrouped with its path seems to be impossible in general
418 // case. E.g. if the group was squeezed, to keep the ungrouped textpath squeezed
419 // as well, we'll need to relink it to some "virtual" path which is inversely
420 // stretched relative to the actual path, and then squeeze the textpath back so it
421 // would both fit the actual path _and_ be squeezed as before. It's a bummer.
423 // This is just a way to temporarily remember the transform in repr. When repr is
424 // reattached outside of the group, the transform will be written more properly
425 // (i.e. optimized into the object if the corresponding preference is set)
426 gchar *affinestr=sp_svg_transform_write(ctrans);
427 nrepr->setAttribute("transform", affinestr);
428 g_free(affinestr);
430 items = g_slist_prepend (items, nrepr);
432 } else {
433 Inkscape::XML::Node *nrepr = SP_OBJECT_REPR (child)->duplicate(prepr->document());
434 objects = g_slist_prepend (objects, nrepr);
435 }
436 }
438 /* Step 2 - clear group */
439 // remember the position of the group
440 gint pos = SP_OBJECT_REPR(group)->position();
442 // the group is leaving forever, no heir, clones should take note; its children however are going to reemerge
443 SP_OBJECT (group)->deleteObject(true, false);
445 /* Step 3 - add nonitems */
446 if (objects) {
447 Inkscape::XML::Node *last_def = SP_OBJECT_REPR(defs)->lastChild();
448 while (objects) {
449 SP_OBJECT_REPR(defs)->addChild((Inkscape::XML::Node *) objects->data, last_def);
450 Inkscape::GC::release((Inkscape::XML::Node *) objects->data);
451 objects = g_slist_remove (objects, objects->data);
452 }
453 }
455 /* Step 4 - add items */
456 while (items) {
457 Inkscape::XML::Node *repr = (Inkscape::XML::Node *) items->data;
458 // add item
459 prepr->appendChild(repr);
460 // restore position; since the items list was prepended (i.e. reverse), we now add
461 // all children at the same pos, which inverts the order once again
462 repr->setPosition(pos > 0 ? pos : 0);
464 // fill in the children list if non-null
465 SPItem *item = (SPItem *) doc->getObjectByRepr(repr);
467 sp_item_write_transform(item, repr, item->transform, NULL, false);
469 Inkscape::GC::release(repr);
470 if (children && SP_IS_ITEM (item))
471 *children = g_slist_prepend (*children, item);
473 items = g_slist_remove (items, items->data);
474 }
476 if (do_done)
477 sp_document_done (doc, SP_VERB_NONE, _("Ungroup"));
478 }
480 /*
481 * some API for list aspect of SPGroup
482 */
484 GSList *
485 sp_item_group_item_list (SPGroup * group)
486 {
487 GSList *s;
488 SPObject *o;
490 g_return_val_if_fail (group != NULL, NULL);
491 g_return_val_if_fail (SP_IS_GROUP (group), NULL);
493 s = NULL;
495 for ( o = sp_object_first_child(SP_OBJECT(group)) ; o != NULL ; o = SP_OBJECT_NEXT(o) ) {
496 if (SP_IS_ITEM (o)) {
497 s = g_slist_prepend (s, o);
498 }
499 }
501 return g_slist_reverse (s);
502 }
504 SPObject *
505 sp_item_group_get_child_by_name (SPGroup *group, SPObject *ref, const gchar *name)
506 {
507 SPObject *child;
508 child = (ref) ? SP_OBJECT_NEXT(ref) : sp_object_first_child(SP_OBJECT(group));
509 while ( child && strcmp (SP_OBJECT_REPR(child)->name(), name) ) {
510 child = SP_OBJECT_NEXT(child);
511 }
512 return child;
513 }
515 void SPGroup::setLayerMode(LayerMode mode) {
516 if ( _layer_mode != mode ) {
517 if ( mode == LAYER ) {
518 sp_document_add_resource(SP_OBJECT_DOCUMENT(this), "layer", this);
519 } else {
520 sp_document_remove_resource(SP_OBJECT_DOCUMENT(this), "layer", this);
521 }
522 _layer_mode = mode;
523 _updateLayerMode();
524 }
525 }
527 SPGroup::LayerMode SPGroup::layerDisplayMode(unsigned int dkey) const {
528 std::map<unsigned int, LayerMode>::const_iterator iter;
529 iter = _display_modes.find(dkey);
530 if ( iter != _display_modes.end() ) {
531 return (*iter).second;
532 } else {
533 return GROUP;
534 }
535 }
537 void SPGroup::setLayerDisplayMode(unsigned int dkey, SPGroup::LayerMode mode) {
538 if ( layerDisplayMode(dkey) != mode ) {
539 _display_modes[dkey] = mode;
540 _updateLayerMode(dkey);
541 }
542 }
544 void SPGroup::_updateLayerMode(unsigned int display_key) {
545 SPItemView *view;
546 for ( view = this->display ; view ; view = view->next ) {
547 if ( !display_key || view->key == display_key ) {
548 NRArenaGroup *arena_group=NR_ARENA_GROUP(view->arenaitem);
549 if (arena_group) {
550 nr_arena_group_set_transparent(arena_group, effectiveLayerMode(view->key) == SPGroup::LAYER);
551 }
552 }
553 }
554 }
556 void SPGroup::translateChildItems(NR::translate const &tr)
557 {
558 if (this->hasChildren())
559 {
560 SPObject *o = NULL;
561 for (o = sp_object_first_child(SP_OBJECT(this)) ; o != NULL ; o = SP_OBJECT_NEXT(o) ) {
562 if (SP_IS_ITEM (o)) {
563 sp_item_move_rel(static_cast<SPItem *>(o), tr);
564 }
565 }
566 }
567 }
569 CGroup::CGroup(SPGroup *group) {
570 _group = group;
571 }
573 CGroup::~CGroup() {
574 }
576 void CGroup::onChildAdded(Inkscape::XML::Node *child) {
577 SPObject *last_child = _group->lastChild();
578 if (last_child && SP_OBJECT_REPR(last_child) == child) {
579 // optimization for the common special case where the child is being added at the end
580 SPObject *ochild = last_child;
581 if ( SP_IS_ITEM(ochild) ) {
582 /* TODO: this should be moved into SPItem somehow */
583 SPItemView *v;
584 NRArenaItem *ac;
586 for (v = _group->display; v != NULL; v = v->next) {
587 ac = sp_item_invoke_show (SP_ITEM (ochild), NR_ARENA_ITEM_ARENA (v->arenaitem), v->key, v->flags);
589 if (ac) {
590 nr_arena_item_append_child (v->arenaitem, ac);
591 nr_arena_item_unref (ac);
592 }
593 }
594 }
595 } else { // general case
596 SPObject *ochild = sp_object_get_child_by_repr(_group, child);
597 if ( ochild && SP_IS_ITEM(ochild) ) {
598 /* TODO: this should be moved into SPItem somehow */
599 SPItemView *v;
600 NRArenaItem *ac;
602 unsigned position = sp_item_pos_in_parent(SP_ITEM(ochild));
604 for (v = _group->display; v != NULL; v = v->next) {
605 ac = sp_item_invoke_show (SP_ITEM (ochild), NR_ARENA_ITEM_ARENA (v->arenaitem), v->key, v->flags);
607 if (ac) {
608 nr_arena_item_add_child (v->arenaitem, ac, NULL);
609 nr_arena_item_set_order (ac, position);
610 nr_arena_item_unref (ac);
611 }
612 }
613 }
614 }
616 _group->requestModified(SP_OBJECT_MODIFIED_FLAG);
617 }
619 void CGroup::onChildRemoved(Inkscape::XML::Node */*child*/) {
620 _group->requestModified(SP_OBJECT_MODIFIED_FLAG);
621 }
623 void CGroup::onUpdate(SPCtx *ctx, unsigned int flags) {
624 SPItemCtx *ictx, cctx;
626 ictx = (SPItemCtx *) ctx;
627 cctx = *ictx;
629 if (flags & SP_OBJECT_MODIFIED_FLAG) {
630 flags |= SP_OBJECT_PARENT_MODIFIED_FLAG;
631 }
633 flags &= SP_OBJECT_MODIFIED_CASCADE;
635 if (flags & SP_OBJECT_STYLE_MODIFIED_FLAG) {
636 SPObject *object = SP_OBJECT(_group);
637 for (SPItemView *v = SP_ITEM(_group)->display; v != NULL; v = v->next) {
638 nr_arena_group_set_style(NR_ARENA_GROUP(v->arenaitem), SP_OBJECT_STYLE(object));
639 }
640 }
642 GSList *l = g_slist_reverse(_group->childList(true, SPObject::ActionUpdate));
643 while (l) {
644 SPObject *child = SP_OBJECT (l->data);
645 l = g_slist_remove (l, child);
646 if (flags || (child->uflags & (SP_OBJECT_MODIFIED_FLAG | SP_OBJECT_CHILD_MODIFIED_FLAG))) {
647 if (SP_IS_ITEM (child)) {
648 SPItem const &chi = *SP_ITEM(child);
649 cctx.i2doc = chi.transform * ictx->i2doc;
650 cctx.i2vp = chi.transform * ictx->i2vp;
651 child->updateDisplay((SPCtx *)&cctx, flags);
652 } else {
653 child->updateDisplay(ctx, flags);
654 }
655 }
656 g_object_unref (G_OBJECT (child));
657 }
658 }
660 void CGroup::onModified(guint flags) {
661 SPObject *child;
663 if (flags & SP_OBJECT_MODIFIED_FLAG) flags |= SP_OBJECT_PARENT_MODIFIED_FLAG;
664 flags &= SP_OBJECT_MODIFIED_CASCADE;
666 if (flags & SP_OBJECT_STYLE_MODIFIED_FLAG) {
667 SPObject *object = SP_OBJECT(_group);
668 for (SPItemView *v = SP_ITEM(_group)->display; v != NULL; v = v->next) {
669 nr_arena_group_set_style(NR_ARENA_GROUP(v->arenaitem), SP_OBJECT_STYLE(object));
670 }
671 }
673 GSList *l = g_slist_reverse(_group->childList(true));
674 while (l) {
675 child = SP_OBJECT (l->data);
676 l = g_slist_remove (l, child);
677 if (flags || (child->mflags & (SP_OBJECT_MODIFIED_FLAG | SP_OBJECT_CHILD_MODIFIED_FLAG))) {
678 child->emitModified(flags);
679 }
680 g_object_unref (G_OBJECT (child));
681 }
682 }
684 void CGroup::calculateBBox(NRRect *bbox, NR::Matrix const &transform, unsigned const flags) {
686 NR::Maybe<NR::Rect> dummy_bbox = NR::Nothing();
688 GSList *l = _group->childList(false, SPObject::ActionBBox);
689 while (l) {
690 SPObject *o = SP_OBJECT (l->data);
691 if (SP_IS_ITEM(o)) {
692 SPItem *child = SP_ITEM(o);
693 NR::Matrix const ct(child->transform * transform);
694 sp_item_invoke_bbox_full(child, &dummy_bbox, ct, flags, FALSE);
695 }
696 l = g_slist_remove (l, o);
697 }
699 *bbox = NRRect(dummy_bbox);
700 }
702 void CGroup::onPrint(SPPrintContext *ctx) {
703 GSList *l = g_slist_reverse(_group->childList(false));
704 while (l) {
705 SPObject *o = SP_OBJECT (l->data);
706 if (SP_IS_ITEM(o)) {
707 sp_item_invoke_print (SP_ITEM (o), ctx);
708 }
709 l = g_slist_remove (l, o);
710 }
711 }
713 gint CGroup::getItemCount() {
714 gint len = 0;
715 for (SPObject *o = sp_object_first_child(SP_OBJECT(_group)) ; o != NULL ; o = SP_OBJECT_NEXT(o) ) {
716 if (SP_IS_ITEM(o)) {
717 len++;
718 }
719 }
721 return len;
722 }
724 gchar *CGroup::getDescription() {
725 gint len = getItemCount();
726 return g_strdup_printf(
727 ngettext("<b>Group</b> of <b>%d</b> object",
728 "<b>Group</b> of <b>%d</b> objects",
729 len), len);
730 }
732 NRArenaItem *CGroup::show (NRArena *arena, unsigned int key, unsigned int flags) {
733 NRArenaItem *ai;
734 SPObject *object = SP_OBJECT(_group);
736 ai = NRArenaGroup::create(arena);
738 nr_arena_group_set_transparent(NR_ARENA_GROUP (ai),
739 _group->effectiveLayerMode(key) ==
740 SPGroup::LAYER);
741 nr_arena_group_set_style(NR_ARENA_GROUP(ai), SP_OBJECT_STYLE(object));
743 _showChildren(arena, ai, key, flags);
744 return ai;
745 }
747 void CGroup::_showChildren (NRArena *arena, NRArenaItem *ai, unsigned int key, unsigned int flags) {
748 NRArenaItem *ac = NULL;
749 NRArenaItem *ar = NULL;
750 SPItem * child = NULL;
751 GSList *l = g_slist_reverse(_group->childList(false, SPObject::ActionShow));
752 while (l) {
753 SPObject *o = SP_OBJECT (l->data);
754 if (SP_IS_ITEM (o)) {
755 child = SP_ITEM (o);
756 ac = sp_item_invoke_show (child, arena, key, flags);
757 if (ac) {
758 nr_arena_item_add_child (ai, ac, ar);
759 ar = ac;
760 nr_arena_item_unref (ac);
761 }
762 }
763 l = g_slist_remove (l, o);
764 }
765 }
767 void CGroup::hide (unsigned int key) {
768 SPItem * child;
770 GSList *l = g_slist_reverse(_group->childList(false, SPObject::ActionShow));
771 while (l) {
772 SPObject *o = SP_OBJECT (l->data);
773 if (SP_IS_ITEM (o)) {
774 child = SP_ITEM (o);
775 sp_item_invoke_hide (child, key);
776 }
777 l = g_slist_remove (l, o);
778 }
780 if (((SPItemClass *) parent_class)->hide)
781 ((SPItemClass *) parent_class)->hide (_group, key);
782 }
784 void CGroup::onOrderChanged (Inkscape::XML::Node *child, Inkscape::XML::Node *, Inkscape::XML::Node *)
785 {
786 SPObject *ochild = sp_object_get_child_by_repr(_group, child);
787 if ( ochild && SP_IS_ITEM(ochild) ) {
788 /* TODO: this should be moved into SPItem somehow */
789 SPItemView *v;
790 unsigned position = sp_item_pos_in_parent(SP_ITEM(ochild));
791 for ( v = SP_ITEM (ochild)->display ; v != NULL ; v = v->next ) {
792 nr_arena_item_set_order (v->arenaitem, position);
793 }
794 }
796 _group->requestModified(SP_OBJECT_MODIFIED_FLAG);
797 }
799 /*
800 Local Variables:
801 mode:c++
802 c-file-style:"stroustrup"
803 c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
804 indent-tabs-mode:nil
805 fill-column:99
806 End:
807 */
808 // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4 :