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 *
10 * Copyright (C) 1999-2005 authors
11 * Copyright (C) 2000-2001 Ximian, Inc.
12 *
13 * Released under GNU GPL, read the file 'COPYING' for more information
14 */
16 #ifdef HAVE_CONFIG_H
17 # include "config.h"
18 #endif
20 #include <glibmm/i18n.h>
22 #include "display/nr-arena-group.h"
23 #include "libnr/nr-matrix-ops.h"
24 #include "libnr/nr-matrix-fns.h"
25 #include "xml/repr.h"
26 #include "svg/svg.h"
27 #include "document.h"
28 #include "style.h"
29 #include "attributes.h"
30 #include "sp-item-transform.h"
31 #include "sp-root.h"
32 #include "sp-use.h"
33 #include "prefs-utils.h"
34 #include "sp-clippath.h"
35 #include "sp-mask.h"
37 static void sp_group_class_init (SPGroupClass *klass);
38 static void sp_group_init (SPGroup *group);
39 static void sp_group_build(SPObject *object, SPDocument *document, Inkscape::XML::Node *repr);
40 static void sp_group_release(SPObject *object);
41 static void sp_group_dispose(GObject *object);
43 static void sp_group_child_added (SPObject * object, Inkscape::XML::Node * child, Inkscape::XML::Node * ref);
44 static void sp_group_remove_child (SPObject * object, Inkscape::XML::Node * child);
45 static void sp_group_order_changed (SPObject * object, Inkscape::XML::Node * child, Inkscape::XML::Node * old_ref, Inkscape::XML::Node * new_ref);
46 static void sp_group_update (SPObject *object, SPCtx *ctx, guint flags);
47 static void sp_group_modified (SPObject *object, guint flags);
48 static Inkscape::XML::Node *sp_group_write (SPObject *object, Inkscape::XML::Node *repr, guint flags);
49 static void sp_group_set(SPObject *object, unsigned key, char const *value);
51 static void sp_group_bbox(SPItem const *item, NRRect *bbox, NR::Matrix const &transform, unsigned const flags);
52 static void sp_group_print (SPItem * item, SPPrintContext *ctx);
53 static gchar * sp_group_description (SPItem * item);
54 static NRArenaItem *sp_group_show (SPItem *item, NRArena *arena, unsigned int key, unsigned int flags);
55 static void sp_group_hide (SPItem * item, unsigned int key);
56 static void sp_group_snappoints (SPItem const *item, SnapPointsIter p);
58 static SPItemClass * parent_class;
60 GType
61 sp_group_get_type (void)
62 {
63 static GType group_type = 0;
64 if (!group_type) {
65 GTypeInfo group_info = {
66 sizeof (SPGroupClass),
67 NULL, /* base_init */
68 NULL, /* base_finalize */
69 (GClassInitFunc) sp_group_class_init,
70 NULL, /* class_finalize */
71 NULL, /* class_data */
72 sizeof (SPGroup),
73 16, /* n_preallocs */
74 (GInstanceInitFunc) sp_group_init,
75 NULL, /* value_table */
76 };
77 group_type = g_type_register_static (SP_TYPE_ITEM, "SPGroup", &group_info, (GTypeFlags)0);
78 }
79 return group_type;
80 }
82 static void
83 sp_group_class_init (SPGroupClass *klass)
84 {
85 GObjectClass * object_class;
86 SPObjectClass * sp_object_class;
87 SPItemClass * item_class;
89 object_class = (GObjectClass *) klass;
90 sp_object_class = (SPObjectClass *) klass;
91 item_class = (SPItemClass *) klass;
93 parent_class = (SPItemClass *)g_type_class_ref (SP_TYPE_ITEM);
95 object_class->dispose = sp_group_dispose;
97 sp_object_class->child_added = sp_group_child_added;
98 sp_object_class->remove_child = sp_group_remove_child;
99 sp_object_class->order_changed = sp_group_order_changed;
100 sp_object_class->update = sp_group_update;
101 sp_object_class->modified = sp_group_modified;
102 sp_object_class->set = sp_group_set;
103 sp_object_class->write = sp_group_write;
104 sp_object_class->release = sp_group_release;
105 sp_object_class->build = sp_group_build;
107 item_class->bbox = sp_group_bbox;
108 item_class->print = sp_group_print;
109 item_class->description = sp_group_description;
110 item_class->show = sp_group_show;
111 item_class->hide = sp_group_hide;
112 item_class->snappoints = sp_group_snappoints;
113 }
115 static void
116 sp_group_init (SPGroup *group)
117 {
118 group->_layer_mode = SPGroup::GROUP;
119 group->group = new CGroup(group);
120 new (&group->_display_modes) std::map<unsigned int, SPGroup::LayerMode>();
121 }
123 static void sp_group_build(SPObject *object, SPDocument *document, Inkscape::XML::Node *repr)
124 {
125 sp_object_read_attr(object, "inkscape:groupmode");
127 if (((SPObjectClass *)parent_class)->build) {
128 ((SPObjectClass *)parent_class)->build(object, document, repr);
129 }
130 }
132 static void sp_group_release(SPObject *object) {
133 if ( SP_GROUP(object)->_layer_mode == SPGroup::LAYER ) {
134 sp_document_remove_resource(SP_OBJECT_DOCUMENT(object), "layer", object);
135 }
136 if (((SPObjectClass *)parent_class)->release) {
137 ((SPObjectClass *)parent_class)->release(object);
138 }
139 }
141 static void
142 sp_group_dispose(GObject *object)
143 {
144 SP_GROUP(object)->_display_modes.~map();
145 delete SP_GROUP(object)->group;
146 }
148 static void
149 sp_group_child_added (SPObject *object, Inkscape::XML::Node *child, Inkscape::XML::Node *ref)
150 {
151 SPItem *item;
153 item = SP_ITEM (object);
155 if (((SPObjectClass *) (parent_class))->child_added)
156 (* ((SPObjectClass *) (parent_class))->child_added) (object, child, ref);
158 SP_GROUP(object)->group->onChildAdded(child);
159 }
161 /* fixme: hide (Lauris) */
163 static void
164 sp_group_remove_child (SPObject * object, Inkscape::XML::Node * child)
165 {
166 if (((SPObjectClass *) (parent_class))->remove_child)
167 (* ((SPObjectClass *) (parent_class))->remove_child) (object, child);
169 SP_GROUP(object)->group->onChildRemoved(child);
170 }
172 static void
173 sp_group_order_changed (SPObject *object, Inkscape::XML::Node *child, Inkscape::XML::Node *old_ref, Inkscape::XML::Node *new_ref)
174 {
175 if (((SPObjectClass *) (parent_class))->order_changed)
176 (* ((SPObjectClass *) (parent_class))->order_changed) (object, child, old_ref, new_ref);
178 SP_GROUP(object)->group->onOrderChanged(child, old_ref, new_ref);
179 }
181 static void
182 sp_group_update (SPObject *object, SPCtx *ctx, unsigned int flags)
183 {
184 if (((SPObjectClass *) (parent_class))->update)
185 ((SPObjectClass *) (parent_class))->update (object, ctx, flags);
187 SP_GROUP(object)->group->onUpdate(ctx, flags);
188 }
190 static void
191 sp_group_modified (SPObject *object, guint flags)
192 {
193 SP_GROUP(object)->group->onModified(flags);
194 }
196 static Inkscape::XML::Node *
197 sp_group_write (SPObject *object, Inkscape::XML::Node *repr, guint flags)
198 {
199 SPGroup *group;
200 SPObject *child;
201 Inkscape::XML::Node *crepr;
203 group = SP_GROUP (object);
205 if (flags & SP_OBJECT_WRITE_BUILD) {
206 GSList *l;
207 if (!repr) repr = sp_repr_new ("svg:g");
208 l = NULL;
209 for (child = sp_object_first_child(object); child != NULL; child = SP_OBJECT_NEXT(child) ) {
210 crepr = child->updateRepr(NULL, flags);
211 if (crepr) l = g_slist_prepend (l, crepr);
212 }
213 while (l) {
214 repr->addChild((Inkscape::XML::Node *) l->data, NULL);
215 Inkscape::GC::release((Inkscape::XML::Node *) l->data);
216 l = g_slist_remove (l, l->data);
217 }
218 } else {
219 for (child = sp_object_first_child(object) ; child != NULL; child = SP_OBJECT_NEXT(child) ) {
220 child->updateRepr(flags);
221 }
222 }
224 if ( flags & SP_OBJECT_WRITE_EXT ) {
225 const char *value;
226 if ( group->_layer_mode == SPGroup::LAYER ) {
227 value = "layer";
228 } else if ( flags & SP_OBJECT_WRITE_ALL ) {
229 value = "group";
230 } else {
231 value = NULL;
232 }
233 repr->setAttribute("inkscape:groupmode", value);
234 }
236 if (((SPObjectClass *) (parent_class))->write)
237 ((SPObjectClass *) (parent_class))->write (object, repr, flags);
239 return repr;
240 }
242 static void
243 sp_group_bbox(SPItem const *item, NRRect *bbox, NR::Matrix const &transform, unsigned const flags)
244 {
245 SP_GROUP(item)->group->calculateBBox(bbox, transform, flags);
246 }
248 static void
249 sp_group_print (SPItem * item, SPPrintContext *ctx)
250 {
251 SP_GROUP(item)->group->onPrint(ctx);
252 }
254 static gchar * sp_group_description (SPItem * item)
255 {
256 return SP_GROUP(item)->group->getDescription();
257 }
259 static void sp_group_set(SPObject *object, unsigned key, char const *value) {
260 SPGroup *group=SP_GROUP(object);
262 switch (key) {
263 case SP_ATTR_INKSCAPE_GROUPMODE: {
264 if ( value && !strcmp(value, "layer") ) {
265 group->setLayerMode(SPGroup::LAYER);
266 } else {
267 group->setLayerMode(SPGroup::GROUP);
268 }
269 } break;
270 default: {
271 if (((SPObjectClass *) (parent_class))->set) {
272 (* ((SPObjectClass *) (parent_class))->set)(object, key, value);
273 }
274 }
275 }
276 }
278 static NRArenaItem *
279 sp_group_show (SPItem *item, NRArena *arena, unsigned int key, unsigned int flags)
280 {
281 return SP_GROUP(item)->group->show(arena, key, flags);
282 }
284 static void
285 sp_group_hide (SPItem *item, unsigned int key)
286 {
287 SP_GROUP(item)->group->hide(key);
288 }
290 static void sp_group_snappoints (SPItem const *item, SnapPointsIter p)
291 {
292 for (SPObject const *o = sp_object_first_child(SP_OBJECT(item));
293 o != NULL;
294 o = SP_OBJECT_NEXT(o))
295 {
296 if (SP_IS_ITEM(o)) {
297 sp_item_snappoints(SP_ITEM(o), p);
298 }
299 }
300 }
303 void
304 sp_item_group_ungroup (SPGroup *group, GSList **children, bool do_done)
305 {
306 g_return_if_fail (group != NULL);
307 g_return_if_fail (SP_IS_GROUP (group));
309 SPDocument *doc = SP_OBJECT_DOCUMENT (group);
310 SPObject *root = SP_DOCUMENT_ROOT (doc);
311 SPObject *defs = SP_OBJECT (SP_ROOT (root)->defs);
313 SPItem *gitem = SP_ITEM (group);
314 Inkscape::XML::Node *grepr = SP_OBJECT_REPR (gitem);
316 g_return_if_fail (!strcmp (grepr->name(), "svg:g") || !strcmp (grepr->name(), "svg:a") || !strcmp (grepr->name(), "svg:switch"));
318 // this converts the gradient/pattern fill/stroke on the group, if any, to userSpaceOnUse
319 sp_item_adjust_paint_recursive (gitem, NR::identity(), NR::identity(), false);
321 SPItem *pitem = SP_ITEM (SP_OBJECT_PARENT (gitem));
322 Inkscape::XML::Node *prepr = SP_OBJECT_REPR (pitem);
324 /* Step 1 - generate lists of children objects */
325 GSList *items = NULL;
326 GSList *objects = NULL;
327 for (SPObject *child = sp_object_first_child(SP_OBJECT(group)) ; child != NULL; child = SP_OBJECT_NEXT(child) ) {
329 if (SP_IS_ITEM (child)) {
331 SPItem *citem = SP_ITEM (child);
333 /* Merging of style */
334 // this converts the gradient/pattern fill/stroke, if any, to userSpaceOnUse; we need to do
335 // it here _before_ the new transform is set, so as to use the pre-transform bbox
336 sp_item_adjust_paint_recursive (citem, NR::identity(), NR::identity(), false);
338 sp_style_merge_from_dying_parent(SP_OBJECT_STYLE(child), SP_OBJECT_STYLE(gitem));
339 /*
340 * fixme: We currently make no allowance for the case where child is cloned
341 * and the group has any style settings.
342 *
343 * (This should never occur with documents created solely with the current
344 * version of inkscape without using the XML editor: we usually apply group
345 * style changes to children rather than to the group itself.)
346 *
347 * If the group has no style settings, then
348 * sp_style_merge_from_dying_parent should be a no-op. Otherwise (i.e. if
349 * we change the child's style to compensate for its parent going away)
350 * then those changes will typically be reflected in any clones of child,
351 * whereas we'd prefer for Ungroup not to affect the visual appearance.
352 *
353 * The only way of preserving styling appearance in general is for child to
354 * be put into a new group -- a somewhat surprising response to an Ungroup
355 * command. We could add a new groupmode:transparent that would mostly
356 * hide the existence of such groups from the user (i.e. editing behaves as
357 * if the transparent group's children weren't in a group), though that's
358 * extra complication & maintenance burden and this case is rare.
359 */
361 child->updateRepr();
363 Inkscape::XML::Node *nrepr = SP_OBJECT_REPR (child)->duplicate();
365 // Merging transform
366 NR::Matrix ctrans;
367 NR::Matrix const g(gitem->transform);
368 if (SP_IS_USE(citem) && sp_use_get_original (SP_USE(citem)) &&
369 SP_OBJECT_PARENT (sp_use_get_original (SP_USE(citem))) == SP_OBJECT(group)) {
370 // make sure a clone's effective transform is the same as was under group
371 ctrans = g.inverse() * citem->transform * g;
372 } else {
373 ctrans = citem->transform * g;
374 }
376 // FIXME: constructing a transform that would fully preserve the appearance of a
377 // textpath if it is ungrouped with its path seems to be impossible in general
378 // case. E.g. if the group was squeezed, to keep the ungrouped textpath squeezed
379 // as well, we'll need to relink it to some "virtual" path which is inversely
380 // stretched relative to the actual path, and then squeeze the textpath back so it
381 // would both fit the actual path _and_ be squeezed as before. It's a bummer.
383 // This is just a way to temporarily remember the transform in repr. When repr is
384 // reattached outside of the group, the transform will be written more properly
385 // (i.e. optimized into the object if the corresponding preference is set)
386 gchar affinestr[80];
387 if (sp_svg_transform_write(affinestr, 79, ctrans)) {
388 nrepr->setAttribute("transform", affinestr);
389 } else {
390 nrepr->setAttribute("transform", NULL);
391 }
393 items = g_slist_prepend (items, nrepr);
395 } else {
396 Inkscape::XML::Node *nrepr = SP_OBJECT_REPR (child)->duplicate();
397 objects = g_slist_prepend (objects, nrepr);
398 }
399 }
401 /* Step 2 - clear group */
402 // remember the position of the group
403 gint pos = SP_OBJECT_REPR(group)->position();
405 // the group is leaving forever, no heir, clones should take note; its children however are going to reemerge
406 SP_OBJECT (group)->deleteObject(true, false);
408 /* Step 3 - add nonitems */
409 if (objects) {
410 Inkscape::XML::Node *last_def = SP_OBJECT_REPR(defs)->lastChild();
411 while (objects) {
412 SP_OBJECT_REPR(defs)->addChild((Inkscape::XML::Node *) objects->data, last_def);
413 Inkscape::GC::release((Inkscape::XML::Node *) objects->data);
414 objects = g_slist_remove (objects, objects->data);
415 }
416 }
418 /* Step 4 - add items */
419 gint const preserve = prefs_get_int_attribute("options.preservetransform", "value", 0);
420 while (items) {
421 Inkscape::XML::Node *repr = (Inkscape::XML::Node *) items->data;
422 // add item
423 prepr->appendChild(repr);
424 // restore position; since the items list was prepended (i.e. reverse), we now add
425 // all children at the same pos, which inverts the order once again
426 repr->setPosition(pos > 0 ? pos : 0);
428 // fill in the children list if non-null
429 SPItem *item = (SPItem *) doc->getObjectByRepr(repr);
431 /* Optimize the transform matrix if requested. */
432 // No compensations are required because this is supposed to be a non-transformation visually.
433 // FIXME: this if is wholly lifted from sp_item_write_transform and should stay in sync
434 NR::Matrix transform_attr (item->transform);
435 if ( // run the object's set_transform (i.e. embed transform) only if:
436 ((SPItemClass *) G_OBJECT_GET_CLASS(item))->set_transform && // it does have a set_transform method
437 !preserve && // user did not chose to preserve all transforms
438 !item->clip_ref->getObject() && // the object does not have a clippath
439 !item->mask_ref->getObject() && // the object does not have a mask
440 !(!transform_attr.is_translation() && SP_OBJECT_STYLE(item) && SP_OBJECT_STYLE(item)->filter.filter)
441 // the object does not have a filter, or the transform is translation (which is supposed to not affect filters)
442 ) {
443 transform_attr = ((SPItemClass *) G_OBJECT_GET_CLASS(item))->set_transform(item, item->transform);
444 }
445 sp_item_set_item_transform(item, transform_attr);
447 Inkscape::GC::release(repr);
448 if (children && SP_IS_ITEM (item))
449 *children = g_slist_prepend (*children, item);
451 items = g_slist_remove (items, items->data);
452 }
454 if (do_done)
455 sp_document_done (doc, SP_VERB_NONE, _("Ungroup"));
456 }
458 /*
459 * some API for list aspect of SPGroup
460 */
462 GSList *
463 sp_item_group_item_list (SPGroup * group)
464 {
465 GSList *s;
466 SPObject *o;
468 g_return_val_if_fail (group != NULL, NULL);
469 g_return_val_if_fail (SP_IS_GROUP (group), NULL);
471 s = NULL;
473 for ( o = sp_object_first_child(SP_OBJECT(group)) ; o != NULL ; o = SP_OBJECT_NEXT(o) ) {
474 if (SP_IS_ITEM (o)) {
475 s = g_slist_prepend (s, o);
476 }
477 }
479 return g_slist_reverse (s);
480 }
482 SPObject *
483 sp_item_group_get_child_by_name (SPGroup *group, SPObject *ref, const gchar *name)
484 {
485 SPObject *child;
486 child = (ref) ? SP_OBJECT_NEXT(ref) : sp_object_first_child(SP_OBJECT(group));
487 while ( child && strcmp (SP_OBJECT_REPR(child)->name(), name) ) {
488 child = SP_OBJECT_NEXT(child);
489 }
490 return child;
491 }
493 void SPGroup::setLayerMode(LayerMode mode) {
494 if ( _layer_mode != mode ) {
495 if ( mode == LAYER ) {
496 sp_document_add_resource(SP_OBJECT_DOCUMENT(this), "layer", this);
497 } else {
498 sp_document_remove_resource(SP_OBJECT_DOCUMENT(this), "layer", this);
499 }
500 _layer_mode = mode;
501 _updateLayerMode();
502 }
503 }
505 SPGroup::LayerMode SPGroup::layerDisplayMode(unsigned int dkey) const {
506 std::map<unsigned int, LayerMode>::const_iterator iter;
507 iter = _display_modes.find(dkey);
508 if ( iter != _display_modes.end() ) {
509 return (*iter).second;
510 } else {
511 return GROUP;
512 }
513 }
515 void SPGroup::setLayerDisplayMode(unsigned int dkey, SPGroup::LayerMode mode) {
516 if ( layerDisplayMode(dkey) != mode ) {
517 _display_modes[dkey] = mode;
518 _updateLayerMode(dkey);
519 }
520 }
522 void SPGroup::_updateLayerMode(unsigned int display_key) {
523 SPItemView *view;
524 for ( view = this->display ; view ; view = view->next ) {
525 if ( !display_key || view->key == display_key ) {
526 NRArenaGroup *arena_group=NR_ARENA_GROUP(view->arenaitem);
527 if (arena_group) {
528 nr_arena_group_set_transparent(arena_group, effectiveLayerMode(view->key) == SPGroup::LAYER);
529 }
530 }
531 }
532 }
534 void SPGroup::translateChildItems(NR::translate const &tr)
535 {
536 if (this->hasChildren())
537 {
538 SPObject *o = NULL;
539 for (o = sp_object_first_child(SP_OBJECT(this)) ; o != NULL ; o = SP_OBJECT_NEXT(o) ) {
540 if (SP_IS_ITEM (o)) {
541 sp_item_move_rel(static_cast<SPItem *>(o), tr);
542 }
543 }
544 }
545 }
547 CGroup::CGroup(SPGroup *group) {
548 _group = group;
549 }
551 CGroup::~CGroup() {
552 }
554 void CGroup::onChildAdded(Inkscape::XML::Node *child) {
555 SPObject *last_child = _group->lastChild();
556 if (last_child && SP_OBJECT_REPR(last_child) == child) {
557 // optimization for the common special case where the child is being added at the end
558 SPObject *ochild = last_child;
559 if ( SP_IS_ITEM(ochild) ) {
560 /* TODO: this should be moved into SPItem somehow */
561 SPItemView *v;
562 NRArenaItem *ac;
564 for (v = _group->display; v != NULL; v = v->next) {
565 ac = sp_item_invoke_show (SP_ITEM (ochild), NR_ARENA_ITEM_ARENA (v->arenaitem), v->key, v->flags);
567 if (ac) {
568 nr_arena_item_append_child (v->arenaitem, ac);
569 nr_arena_item_unref (ac);
570 }
571 }
572 }
573 } else { // general case
574 SPObject *ochild = sp_object_get_child_by_repr(_group, child);
575 if ( ochild && SP_IS_ITEM(ochild) ) {
576 /* TODO: this should be moved into SPItem somehow */
577 SPItemView *v;
578 NRArenaItem *ac;
580 unsigned position = sp_item_pos_in_parent(SP_ITEM(ochild));
582 for (v = _group->display; v != NULL; v = v->next) {
583 ac = sp_item_invoke_show (SP_ITEM (ochild), NR_ARENA_ITEM_ARENA (v->arenaitem), v->key, v->flags);
585 if (ac) {
586 nr_arena_item_add_child (v->arenaitem, ac, NULL);
587 nr_arena_item_set_order (ac, position);
588 nr_arena_item_unref (ac);
589 }
590 }
591 }
592 }
594 _group->requestModified(SP_OBJECT_MODIFIED_FLAG);
595 }
597 void CGroup::onChildRemoved(Inkscape::XML::Node */*child*/) {
598 _group->requestModified(SP_OBJECT_MODIFIED_FLAG);
599 }
601 void CGroup::onUpdate(SPCtx *ctx, unsigned int flags) {
602 SPItemCtx *ictx, cctx;
604 ictx = (SPItemCtx *) ctx;
605 cctx = *ictx;
607 if (flags & SP_OBJECT_MODIFIED_FLAG) {
608 flags |= SP_OBJECT_PARENT_MODIFIED_FLAG;
609 }
611 flags &= SP_OBJECT_MODIFIED_CASCADE;
613 if (flags & SP_OBJECT_STYLE_MODIFIED_FLAG) {
614 SPObject *object = SP_OBJECT(_group);
615 for (SPItemView *v = SP_ITEM(_group)->display; v != NULL; v = v->next) {
616 nr_arena_group_set_style(NR_ARENA_GROUP(v->arenaitem), SP_OBJECT_STYLE(object));
617 }
618 }
620 GSList *l = g_slist_reverse(_group->childList(true, SPObject::ActionUpdate));
621 while (l) {
622 SPObject *child = SP_OBJECT (l->data);
623 l = g_slist_remove (l, child);
624 if (flags || (child->uflags & (SP_OBJECT_MODIFIED_FLAG | SP_OBJECT_CHILD_MODIFIED_FLAG))) {
625 if (SP_IS_ITEM (child)) {
626 SPItem const &chi = *SP_ITEM(child);
627 cctx.i2doc = chi.transform * ictx->i2doc;
628 cctx.i2vp = chi.transform * ictx->i2vp;
629 child->updateDisplay((SPCtx *)&cctx, flags);
630 } else {
631 child->updateDisplay(ctx, flags);
632 }
633 }
634 g_object_unref (G_OBJECT (child));
635 }
636 }
638 void CGroup::onModified(guint flags) {
639 SPObject *child;
641 if (flags & SP_OBJECT_MODIFIED_FLAG) flags |= SP_OBJECT_PARENT_MODIFIED_FLAG;
642 flags &= SP_OBJECT_MODIFIED_CASCADE;
644 if (flags & SP_OBJECT_STYLE_MODIFIED_FLAG) {
645 SPObject *object = SP_OBJECT(_group);
646 for (SPItemView *v = SP_ITEM(_group)->display; v != NULL; v = v->next) {
647 nr_arena_group_set_style(NR_ARENA_GROUP(v->arenaitem), SP_OBJECT_STYLE(object));
648 }
649 }
651 GSList *l = g_slist_reverse(_group->childList(true));
652 while (l) {
653 child = SP_OBJECT (l->data);
654 l = g_slist_remove (l, child);
655 if (flags || (child->mflags & (SP_OBJECT_MODIFIED_FLAG | SP_OBJECT_CHILD_MODIFIED_FLAG))) {
656 child->emitModified(flags);
657 }
658 g_object_unref (G_OBJECT (child));
659 }
660 }
662 void CGroup::calculateBBox(NRRect *bbox, NR::Matrix const &transform, unsigned const flags) {
663 GSList *l = _group->childList(false, SPObject::ActionBBox);
664 while (l) {
665 SPObject *o = SP_OBJECT (l->data);
666 if (SP_IS_ITEM(o)) {
667 SPItem *child = SP_ITEM(o);
668 NR::Matrix const ct(child->transform * transform);
669 sp_item_invoke_bbox_full(child, bbox, ct, flags, FALSE);
670 }
671 l = g_slist_remove (l, o);
672 }
673 }
675 void CGroup::onPrint(SPPrintContext *ctx) {
676 GSList *l = g_slist_reverse(_group->childList(false));
677 while (l) {
678 SPObject *o = SP_OBJECT (l->data);
679 if (SP_IS_ITEM(o)) {
680 sp_item_invoke_print (SP_ITEM (o), ctx);
681 }
682 l = g_slist_remove (l, o);
683 }
684 }
686 gint CGroup::getItemCount() {
687 gint len = 0;
688 for (SPObject *o = sp_object_first_child(SP_OBJECT(_group)) ; o != NULL ; o = SP_OBJECT_NEXT(o) ) {
689 if (SP_IS_ITEM(o)) {
690 len++;
691 }
692 }
694 return len;
695 }
697 gchar *CGroup::getDescription() {
698 gint len = getItemCount();
699 return g_strdup_printf(
700 ngettext("<b>Group</b> of <b>%d</b> object",
701 "<b>Group</b> of <b>%d</b> objects",
702 len), len);
703 }
705 NRArenaItem *CGroup::show (NRArena *arena, unsigned int key, unsigned int flags) {
706 NRArenaItem *ai;
707 SPObject *object = SP_OBJECT(_group);
709 ai = NRArenaGroup::create(arena);
711 nr_arena_group_set_transparent(NR_ARENA_GROUP (ai),
712 _group->effectiveLayerMode(key) ==
713 SPGroup::LAYER);
714 nr_arena_group_set_style(NR_ARENA_GROUP(ai), SP_OBJECT_STYLE(object));
716 _showChildren(arena, ai, key, flags);
717 return ai;
718 }
720 void CGroup::_showChildren (NRArena *arena, NRArenaItem *ai, unsigned int key, unsigned int flags) {
721 NRArenaItem *ac = NULL;
722 NRArenaItem *ar = NULL;
723 SPItem * child = NULL;
724 GSList *l = g_slist_reverse(_group->childList(false, SPObject::ActionShow));
725 while (l) {
726 SPObject *o = SP_OBJECT (l->data);
727 if (SP_IS_ITEM (o)) {
728 child = SP_ITEM (o);
729 ac = sp_item_invoke_show (child, arena, key, flags);
730 if (ac) {
731 nr_arena_item_add_child (ai, ac, ar);
732 ar = ac;
733 nr_arena_item_unref (ac);
734 }
735 }
736 l = g_slist_remove (l, o);
737 }
738 }
740 void CGroup::hide (unsigned int key) {
741 SPItem * child;
743 GSList *l = g_slist_reverse(_group->childList(false, SPObject::ActionShow));
744 while (l) {
745 SPObject *o = SP_OBJECT (l->data);
746 if (SP_IS_ITEM (o)) {
747 child = SP_ITEM (o);
748 sp_item_invoke_hide (child, key);
749 }
750 l = g_slist_remove (l, o);
751 }
753 if (((SPItemClass *) parent_class)->hide)
754 ((SPItemClass *) parent_class)->hide (_group, key);
755 }
757 void CGroup::onOrderChanged (Inkscape::XML::Node *child, Inkscape::XML::Node *, Inkscape::XML::Node *)
758 {
759 SPObject *ochild = sp_object_get_child_by_repr(_group, child);
760 if ( ochild && SP_IS_ITEM(ochild) ) {
761 /* TODO: this should be moved into SPItem somehow */
762 SPItemView *v;
763 unsigned position = sp_item_pos_in_parent(SP_ITEM(ochild));
764 for ( v = SP_ITEM (ochild)->display ; v != NULL ; v = v->next ) {
765 nr_arena_item_set_order (v->arenaitem, position);
766 }
767 }
769 _group->requestModified(SP_OBJECT_MODIFIED_FLAG);
770 }
772 /*
773 Local Variables:
774 mode:c++
775 c-file-style:"stroustrup"
776 c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
777 indent-tabs-mode:nil
778 fill-column:99
779 End:
780 */
781 // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4 :