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 SPGroup *group = SP_GROUP(item);
278 Inkscape::Selection *selection = sp_desktop_selection(inkscape_active_desktop());
279 persp3d_split_perspectives_according_to_selection(selection);
281 NR::Matrix last_trans;
282 sp_svg_transform_read(SP_OBJECT_REPR(item)->attribute("transform"), &last_trans);
283 NR::Matrix inc_trans = last_trans.inverse()*xform;
285 std::list<Persp3D *> plist = selection->perspList();
286 for (std::list<Persp3D *>::iterator i = plist.begin(); i != plist.end(); ++i) {
287 persp3d_apply_affine_transformation(*i, inc_trans);
288 }
290 return xform;
291 }
293 static void sp_group_set(SPObject *object, unsigned key, char const *value) {
294 SPGroup *group=SP_GROUP(object);
296 switch (key) {
297 case SP_ATTR_INKSCAPE_GROUPMODE: {
298 if ( value && !strcmp(value, "layer") ) {
299 group->setLayerMode(SPGroup::LAYER);
300 } else {
301 group->setLayerMode(SPGroup::GROUP);
302 }
303 } break;
304 default: {
305 if (((SPObjectClass *) (parent_class))->set) {
306 (* ((SPObjectClass *) (parent_class))->set)(object, key, value);
307 }
308 }
309 }
310 }
312 static NRArenaItem *
313 sp_group_show (SPItem *item, NRArena *arena, unsigned int key, unsigned int flags)
314 {
315 return SP_GROUP(item)->group->show(arena, key, flags);
316 }
318 static void
319 sp_group_hide (SPItem *item, unsigned int key)
320 {
321 SP_GROUP(item)->group->hide(key);
322 }
324 static void sp_group_snappoints (SPItem const *item, SnapPointsIter p)
325 {
326 for (SPObject const *o = sp_object_first_child(SP_OBJECT(item));
327 o != NULL;
328 o = SP_OBJECT_NEXT(o))
329 {
330 if (SP_IS_ITEM(o)) {
331 sp_item_snappoints(SP_ITEM(o), false, p);
332 }
333 }
334 }
337 void
338 sp_item_group_ungroup (SPGroup *group, GSList **children, bool do_done)
339 {
340 g_return_if_fail (group != NULL);
341 g_return_if_fail (SP_IS_GROUP (group));
343 SPDocument *doc = SP_OBJECT_DOCUMENT (group);
344 SPObject *root = SP_DOCUMENT_ROOT (doc);
345 SPObject *defs = SP_OBJECT (SP_ROOT (root)->defs);
347 SPItem *gitem = SP_ITEM (group);
348 Inkscape::XML::Node *grepr = SP_OBJECT_REPR (gitem);
350 g_return_if_fail (!strcmp (grepr->name(), "svg:g") || !strcmp (grepr->name(), "svg:a") || !strcmp (grepr->name(), "svg:switch"));
352 // this converts the gradient/pattern fill/stroke on the group, if any, to userSpaceOnUse
353 sp_item_adjust_paint_recursive (gitem, NR::identity(), NR::identity(), false);
355 SPItem *pitem = SP_ITEM (SP_OBJECT_PARENT (gitem));
356 Inkscape::XML::Node *prepr = SP_OBJECT_REPR (pitem);
358 if (SP_IS_BOX3D(gitem)) {
359 grepr = box3d_convert_to_group(SP_BOX3D(gitem));
360 if (grepr) {
361 gitem = SP_ITEM(doc->getObjectByRepr(grepr));
362 group = SP_GROUP(gitem);
363 }
364 }
366 /* Step 1 - generate lists of children objects */
367 GSList *items = NULL;
368 GSList *objects = NULL;
369 for (SPObject *child = sp_object_first_child(SP_OBJECT(group)) ; child != NULL; child = SP_OBJECT_NEXT(child) ) {
371 if (SP_IS_ITEM (child)) {
373 SPItem *citem = SP_ITEM (child);
375 /* Merging of style */
376 // this converts the gradient/pattern fill/stroke, if any, to userSpaceOnUse; we need to do
377 // it here _before_ the new transform is set, so as to use the pre-transform bbox
378 sp_item_adjust_paint_recursive (citem, NR::identity(), NR::identity(), false);
380 sp_style_merge_from_dying_parent(SP_OBJECT_STYLE(child), SP_OBJECT_STYLE(gitem));
381 /*
382 * fixme: We currently make no allowance for the case where child is cloned
383 * and the group has any style settings.
384 *
385 * (This should never occur with documents created solely with the current
386 * version of inkscape without using the XML editor: we usually apply group
387 * style changes to children rather than to the group itself.)
388 *
389 * If the group has no style settings, then
390 * sp_style_merge_from_dying_parent should be a no-op. Otherwise (i.e. if
391 * we change the child's style to compensate for its parent going away)
392 * then those changes will typically be reflected in any clones of child,
393 * whereas we'd prefer for Ungroup not to affect the visual appearance.
394 *
395 * The only way of preserving styling appearance in general is for child to
396 * be put into a new group -- a somewhat surprising response to an Ungroup
397 * command. We could add a new groupmode:transparent that would mostly
398 * hide the existence of such groups from the user (i.e. editing behaves as
399 * if the transparent group's children weren't in a group), though that's
400 * extra complication & maintenance burden and this case is rare.
401 */
403 child->updateRepr();
405 Inkscape::XML::Node *nrepr = SP_OBJECT_REPR (child)->duplicate(prepr->document());
407 // Merging transform
408 NR::Matrix ctrans;
409 NR::Matrix const g(gitem->transform);
410 if (SP_IS_USE(citem) && sp_use_get_original (SP_USE(citem)) &&
411 SP_OBJECT_PARENT (sp_use_get_original (SP_USE(citem))) == SP_OBJECT(group)) {
412 // make sure a clone's effective transform is the same as was under group
413 ctrans = g.inverse() * citem->transform * g;
414 } else {
415 ctrans = citem->transform * g;
416 }
418 // FIXME: constructing a transform that would fully preserve the appearance of a
419 // textpath if it is ungrouped with its path seems to be impossible in general
420 // case. E.g. if the group was squeezed, to keep the ungrouped textpath squeezed
421 // as well, we'll need to relink it to some "virtual" path which is inversely
422 // stretched relative to the actual path, and then squeeze the textpath back so it
423 // would both fit the actual path _and_ be squeezed as before. It's a bummer.
425 // This is just a way to temporarily remember the transform in repr. When repr is
426 // reattached outside of the group, the transform will be written more properly
427 // (i.e. optimized into the object if the corresponding preference is set)
428 gchar *affinestr=sp_svg_transform_write(ctrans);
429 nrepr->setAttribute("transform", affinestr);
430 g_free(affinestr);
432 items = g_slist_prepend (items, nrepr);
434 } else {
435 Inkscape::XML::Node *nrepr = SP_OBJECT_REPR (child)->duplicate(prepr->document());
436 objects = g_slist_prepend (objects, nrepr);
437 }
438 }
440 /* Step 2 - clear group */
441 // remember the position of the group
442 gint pos = SP_OBJECT_REPR(group)->position();
444 // the group is leaving forever, no heir, clones should take note; its children however are going to reemerge
445 SP_OBJECT (group)->deleteObject(true, false);
447 /* Step 3 - add nonitems */
448 if (objects) {
449 Inkscape::XML::Node *last_def = SP_OBJECT_REPR(defs)->lastChild();
450 while (objects) {
451 SP_OBJECT_REPR(defs)->addChild((Inkscape::XML::Node *) objects->data, last_def);
452 Inkscape::GC::release((Inkscape::XML::Node *) objects->data);
453 objects = g_slist_remove (objects, objects->data);
454 }
455 }
457 /* Step 4 - add items */
458 while (items) {
459 Inkscape::XML::Node *repr = (Inkscape::XML::Node *) items->data;
460 // add item
461 prepr->appendChild(repr);
462 // restore position; since the items list was prepended (i.e. reverse), we now add
463 // all children at the same pos, which inverts the order once again
464 repr->setPosition(pos > 0 ? pos : 0);
466 // fill in the children list if non-null
467 SPItem *item = (SPItem *) doc->getObjectByRepr(repr);
469 sp_item_write_transform(item, repr, item->transform, NULL, false);
471 Inkscape::GC::release(repr);
472 if (children && SP_IS_ITEM (item))
473 *children = g_slist_prepend (*children, item);
475 items = g_slist_remove (items, items->data);
476 }
478 if (do_done)
479 sp_document_done (doc, SP_VERB_NONE, _("Ungroup"));
480 }
482 /*
483 * some API for list aspect of SPGroup
484 */
486 GSList *
487 sp_item_group_item_list (SPGroup * group)
488 {
489 GSList *s;
490 SPObject *o;
492 g_return_val_if_fail (group != NULL, NULL);
493 g_return_val_if_fail (SP_IS_GROUP (group), NULL);
495 s = NULL;
497 for ( o = sp_object_first_child(SP_OBJECT(group)) ; o != NULL ; o = SP_OBJECT_NEXT(o) ) {
498 if (SP_IS_ITEM (o)) {
499 s = g_slist_prepend (s, o);
500 }
501 }
503 return g_slist_reverse (s);
504 }
506 SPObject *
507 sp_item_group_get_child_by_name (SPGroup *group, SPObject *ref, const gchar *name)
508 {
509 SPObject *child;
510 child = (ref) ? SP_OBJECT_NEXT(ref) : sp_object_first_child(SP_OBJECT(group));
511 while ( child && strcmp (SP_OBJECT_REPR(child)->name(), name) ) {
512 child = SP_OBJECT_NEXT(child);
513 }
514 return child;
515 }
517 void SPGroup::setLayerMode(LayerMode mode) {
518 if ( _layer_mode != mode ) {
519 if ( mode == LAYER ) {
520 sp_document_add_resource(SP_OBJECT_DOCUMENT(this), "layer", this);
521 } else {
522 sp_document_remove_resource(SP_OBJECT_DOCUMENT(this), "layer", this);
523 }
524 _layer_mode = mode;
525 _updateLayerMode();
526 }
527 }
529 SPGroup::LayerMode SPGroup::layerDisplayMode(unsigned int dkey) const {
530 std::map<unsigned int, LayerMode>::const_iterator iter;
531 iter = _display_modes.find(dkey);
532 if ( iter != _display_modes.end() ) {
533 return (*iter).second;
534 } else {
535 return GROUP;
536 }
537 }
539 void SPGroup::setLayerDisplayMode(unsigned int dkey, SPGroup::LayerMode mode) {
540 if ( layerDisplayMode(dkey) != mode ) {
541 _display_modes[dkey] = mode;
542 _updateLayerMode(dkey);
543 }
544 }
546 void SPGroup::_updateLayerMode(unsigned int display_key) {
547 SPItemView *view;
548 for ( view = this->display ; view ; view = view->next ) {
549 if ( !display_key || view->key == display_key ) {
550 NRArenaGroup *arena_group=NR_ARENA_GROUP(view->arenaitem);
551 if (arena_group) {
552 nr_arena_group_set_transparent(arena_group, effectiveLayerMode(view->key) == SPGroup::LAYER);
553 }
554 }
555 }
556 }
558 void SPGroup::translateChildItems(NR::translate const &tr)
559 {
560 if (this->hasChildren())
561 {
562 SPObject *o = NULL;
563 for (o = sp_object_first_child(SP_OBJECT(this)) ; o != NULL ; o = SP_OBJECT_NEXT(o) ) {
564 if (SP_IS_ITEM (o)) {
565 sp_item_move_rel(static_cast<SPItem *>(o), tr);
566 }
567 }
568 }
569 }
571 CGroup::CGroup(SPGroup *group) {
572 _group = group;
573 }
575 CGroup::~CGroup() {
576 }
578 void CGroup::onChildAdded(Inkscape::XML::Node *child) {
579 SPObject *last_child = _group->lastChild();
580 if (last_child && SP_OBJECT_REPR(last_child) == child) {
581 // optimization for the common special case where the child is being added at the end
582 SPObject *ochild = last_child;
583 if ( SP_IS_ITEM(ochild) ) {
584 /* TODO: this should be moved into SPItem somehow */
585 SPItemView *v;
586 NRArenaItem *ac;
588 for (v = _group->display; v != NULL; v = v->next) {
589 ac = sp_item_invoke_show (SP_ITEM (ochild), NR_ARENA_ITEM_ARENA (v->arenaitem), v->key, v->flags);
591 if (ac) {
592 nr_arena_item_append_child (v->arenaitem, ac);
593 nr_arena_item_unref (ac);
594 }
595 }
596 }
597 } else { // general case
598 SPObject *ochild = sp_object_get_child_by_repr(_group, child);
599 if ( ochild && SP_IS_ITEM(ochild) ) {
600 /* TODO: this should be moved into SPItem somehow */
601 SPItemView *v;
602 NRArenaItem *ac;
604 unsigned position = sp_item_pos_in_parent(SP_ITEM(ochild));
606 for (v = _group->display; v != NULL; v = v->next) {
607 ac = sp_item_invoke_show (SP_ITEM (ochild), NR_ARENA_ITEM_ARENA (v->arenaitem), v->key, v->flags);
609 if (ac) {
610 nr_arena_item_add_child (v->arenaitem, ac, NULL);
611 nr_arena_item_set_order (ac, position);
612 nr_arena_item_unref (ac);
613 }
614 }
615 }
616 }
618 _group->requestModified(SP_OBJECT_MODIFIED_FLAG);
619 }
621 void CGroup::onChildRemoved(Inkscape::XML::Node */*child*/) {
622 _group->requestModified(SP_OBJECT_MODIFIED_FLAG);
623 }
625 void CGroup::onUpdate(SPCtx *ctx, unsigned int flags) {
626 SPItemCtx *ictx, cctx;
628 ictx = (SPItemCtx *) ctx;
629 cctx = *ictx;
631 if (flags & SP_OBJECT_MODIFIED_FLAG) {
632 flags |= SP_OBJECT_PARENT_MODIFIED_FLAG;
633 }
635 flags &= SP_OBJECT_MODIFIED_CASCADE;
637 if (flags & SP_OBJECT_STYLE_MODIFIED_FLAG) {
638 SPObject *object = SP_OBJECT(_group);
639 for (SPItemView *v = SP_ITEM(_group)->display; v != NULL; v = v->next) {
640 nr_arena_group_set_style(NR_ARENA_GROUP(v->arenaitem), SP_OBJECT_STYLE(object));
641 }
642 }
644 GSList *l = g_slist_reverse(_group->childList(true, SPObject::ActionUpdate));
645 while (l) {
646 SPObject *child = SP_OBJECT (l->data);
647 l = g_slist_remove (l, child);
648 if (flags || (child->uflags & (SP_OBJECT_MODIFIED_FLAG | SP_OBJECT_CHILD_MODIFIED_FLAG))) {
649 if (SP_IS_ITEM (child)) {
650 SPItem const &chi = *SP_ITEM(child);
651 cctx.i2doc = chi.transform * ictx->i2doc;
652 cctx.i2vp = chi.transform * ictx->i2vp;
653 child->updateDisplay((SPCtx *)&cctx, flags);
654 } else {
655 child->updateDisplay(ctx, flags);
656 }
657 }
658 g_object_unref (G_OBJECT (child));
659 }
660 }
662 void CGroup::onModified(guint flags) {
663 SPObject *child;
665 if (flags & SP_OBJECT_MODIFIED_FLAG) flags |= SP_OBJECT_PARENT_MODIFIED_FLAG;
666 flags &= SP_OBJECT_MODIFIED_CASCADE;
668 if (flags & SP_OBJECT_STYLE_MODIFIED_FLAG) {
669 SPObject *object = SP_OBJECT(_group);
670 for (SPItemView *v = SP_ITEM(_group)->display; v != NULL; v = v->next) {
671 nr_arena_group_set_style(NR_ARENA_GROUP(v->arenaitem), SP_OBJECT_STYLE(object));
672 }
673 }
675 GSList *l = g_slist_reverse(_group->childList(true));
676 while (l) {
677 child = SP_OBJECT (l->data);
678 l = g_slist_remove (l, child);
679 if (flags || (child->mflags & (SP_OBJECT_MODIFIED_FLAG | SP_OBJECT_CHILD_MODIFIED_FLAG))) {
680 child->emitModified(flags);
681 }
682 g_object_unref (G_OBJECT (child));
683 }
684 }
686 void CGroup::calculateBBox(NRRect *bbox, NR::Matrix const &transform, unsigned const flags) {
687 GSList *l = _group->childList(false, SPObject::ActionBBox);
688 while (l) {
689 SPObject *o = SP_OBJECT (l->data);
690 if (SP_IS_ITEM(o)) {
691 SPItem *child = SP_ITEM(o);
692 NR::Matrix const ct(child->transform * transform);
693 sp_item_invoke_bbox_full(child, bbox, ct, flags, FALSE);
694 }
695 l = g_slist_remove (l, o);
696 }
697 }
699 void CGroup::onPrint(SPPrintContext *ctx) {
700 GSList *l = g_slist_reverse(_group->childList(false));
701 while (l) {
702 SPObject *o = SP_OBJECT (l->data);
703 if (SP_IS_ITEM(o)) {
704 sp_item_invoke_print (SP_ITEM (o), ctx);
705 }
706 l = g_slist_remove (l, o);
707 }
708 }
710 gint CGroup::getItemCount() {
711 gint len = 0;
712 for (SPObject *o = sp_object_first_child(SP_OBJECT(_group)) ; o != NULL ; o = SP_OBJECT_NEXT(o) ) {
713 if (SP_IS_ITEM(o)) {
714 len++;
715 }
716 }
718 return len;
719 }
721 gchar *CGroup::getDescription() {
722 gint len = getItemCount();
723 return g_strdup_printf(
724 ngettext("<b>Group</b> of <b>%d</b> object",
725 "<b>Group</b> of <b>%d</b> objects",
726 len), len);
727 }
729 NRArenaItem *CGroup::show (NRArena *arena, unsigned int key, unsigned int flags) {
730 NRArenaItem *ai;
731 SPObject *object = SP_OBJECT(_group);
733 ai = NRArenaGroup::create(arena);
735 nr_arena_group_set_transparent(NR_ARENA_GROUP (ai),
736 _group->effectiveLayerMode(key) ==
737 SPGroup::LAYER);
738 nr_arena_group_set_style(NR_ARENA_GROUP(ai), SP_OBJECT_STYLE(object));
740 _showChildren(arena, ai, key, flags);
741 return ai;
742 }
744 void CGroup::_showChildren (NRArena *arena, NRArenaItem *ai, unsigned int key, unsigned int flags) {
745 NRArenaItem *ac = NULL;
746 NRArenaItem *ar = NULL;
747 SPItem * child = NULL;
748 GSList *l = g_slist_reverse(_group->childList(false, SPObject::ActionShow));
749 while (l) {
750 SPObject *o = SP_OBJECT (l->data);
751 if (SP_IS_ITEM (o)) {
752 child = SP_ITEM (o);
753 ac = sp_item_invoke_show (child, arena, key, flags);
754 if (ac) {
755 nr_arena_item_add_child (ai, ac, ar);
756 ar = ac;
757 nr_arena_item_unref (ac);
758 }
759 }
760 l = g_slist_remove (l, o);
761 }
762 }
764 void CGroup::hide (unsigned int key) {
765 SPItem * child;
767 GSList *l = g_slist_reverse(_group->childList(false, SPObject::ActionShow));
768 while (l) {
769 SPObject *o = SP_OBJECT (l->data);
770 if (SP_IS_ITEM (o)) {
771 child = SP_ITEM (o);
772 sp_item_invoke_hide (child, key);
773 }
774 l = g_slist_remove (l, o);
775 }
777 if (((SPItemClass *) parent_class)->hide)
778 ((SPItemClass *) parent_class)->hide (_group, key);
779 }
781 void CGroup::onOrderChanged (Inkscape::XML::Node *child, Inkscape::XML::Node *, Inkscape::XML::Node *)
782 {
783 SPObject *ochild = sp_object_get_child_by_repr(_group, child);
784 if ( ochild && SP_IS_ITEM(ochild) ) {
785 /* TODO: this should be moved into SPItem somehow */
786 SPItemView *v;
787 unsigned position = sp_item_pos_in_parent(SP_ITEM(ochild));
788 for ( v = SP_ITEM (ochild)->display ; v != NULL ; v = v->next ) {
789 nr_arena_item_set_order (v->arenaitem, position);
790 }
791 }
793 _group->requestModified(SP_OBJECT_MODIFIED_FLAG);
794 }
796 /*
797 Local Variables:
798 mode:c++
799 c-file-style:"stroustrup"
800 c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
801 indent-tabs-mode:nil
802 fill-column:99
803 End:
804 */
805 // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4 :