1 #define __SP_GROUP_C__
3 /*
4 * SVG <g> implementation
5 *
6 * Authors:
7 * Lauris Kaplinski <lauris@kaplinski.com>
8 * bulia byak <buliabyak@users.sf.net>
9 * Johan Engelen <j.b.c.engelen@ewi.utwente.nl>
10 *
11 * Copyright (C) 1999-2006 authors
12 * Copyright (C) 2000-2001 Ximian, Inc.
13 *
14 * Released under GNU GPL, read the file 'COPYING' for more information
15 */
17 #ifdef HAVE_CONFIG_H
18 # include "config.h"
19 #endif
21 #include <glibmm/i18n.h>
22 #include <cstring>
23 #include <string>
25 #include "display/nr-arena-group.h"
26 #include "display/curve.h"
27 #include "libnr/nr-matrix-ops.h"
28 #include "libnr/nr-matrix-fns.h"
29 #include "xml/repr.h"
30 #include "svg/svg.h"
31 #include "document.h"
32 #include "style.h"
33 #include "attributes.h"
34 #include "sp-item-transform.h"
35 #include "sp-root.h"
36 #include "sp-use.h"
37 #include "sp-offset.h"
38 #include "sp-clippath.h"
39 #include "sp-mask.h"
40 #include "sp-path.h"
41 #include "box3d.h"
42 #include "persp3d.h"
43 #include "inkscape.h"
44 #include "desktop-handles.h"
45 #include "selection.h"
46 #include "live_effects/effect.h"
47 #include "live_effects/lpeobject.h"
48 #include "live_effects/lpeobject-reference.h"
49 #include "sp-title.h"
50 #include "sp-desc.h"
51 #include "sp-switch.h"
53 static void sp_group_class_init (SPGroupClass *klass);
54 static void sp_group_init (SPGroup *group);
55 static void sp_group_build(SPObject *object, SPDocument *document, Inkscape::XML::Node *repr);
56 static void sp_group_release(SPObject *object);
57 static void sp_group_dispose(GObject *object);
59 static void sp_group_child_added (SPObject * object, Inkscape::XML::Node * child, Inkscape::XML::Node * ref);
60 static void sp_group_remove_child (SPObject * object, Inkscape::XML::Node * child);
61 static void sp_group_order_changed (SPObject * object, Inkscape::XML::Node * child, Inkscape::XML::Node * old_ref, Inkscape::XML::Node * new_ref);
62 static void sp_group_update (SPObject *object, SPCtx *ctx, guint flags);
63 static void sp_group_modified (SPObject *object, guint flags);
64 static Inkscape::XML::Node *sp_group_write (SPObject *object, Inkscape::XML::Document *doc, Inkscape::XML::Node *repr, guint flags);
65 static void sp_group_set(SPObject *object, unsigned key, char const *value);
67 static void sp_group_bbox(SPItem const *item, NRRect *bbox, Geom::Matrix const &transform, unsigned const flags);
68 static void sp_group_print (SPItem * item, SPPrintContext *ctx);
69 static gchar * sp_group_description (SPItem * item);
70 static NRArenaItem *sp_group_show (SPItem *item, NRArena *arena, unsigned int key, unsigned int flags);
71 static void sp_group_hide (SPItem * item, unsigned int key);
72 static void sp_group_snappoints (SPItem const *item, std::vector<Inkscape::SnapCandidatePoint> &p, Inkscape::SnapPreferences const *snapprefs);
74 static void sp_group_update_patheffect(SPLPEItem *lpeitem, bool write);
75 static void sp_group_perform_patheffect(SPGroup *group, SPGroup *topgroup, bool write);
77 static SPLPEItemClass * parent_class;
79 GType
80 sp_group_get_type (void)
81 {
82 static GType group_type = 0;
83 if (!group_type) {
84 GTypeInfo group_info = {
85 sizeof (SPGroupClass),
86 NULL, /* base_init */
87 NULL, /* base_finalize */
88 (GClassInitFunc) sp_group_class_init,
89 NULL, /* class_finalize */
90 NULL, /* class_data */
91 sizeof (SPGroup),
92 16, /* n_preallocs */
93 (GInstanceInitFunc) sp_group_init,
94 NULL, /* value_table */
95 };
96 group_type = g_type_register_static (SP_TYPE_LPE_ITEM, "SPGroup", &group_info, (GTypeFlags)0);
97 }
98 return group_type;
99 }
101 static void
102 sp_group_class_init (SPGroupClass *klass)
103 {
104 GObjectClass * object_class;
105 SPObjectClass * sp_object_class;
106 SPItemClass * item_class;
107 SPLPEItemClass * lpe_item_class;
109 object_class = (GObjectClass *) klass;
110 sp_object_class = (SPObjectClass *) klass;
111 item_class = (SPItemClass *) klass;
112 lpe_item_class = (SPLPEItemClass *) klass;
114 parent_class = (SPLPEItemClass *)g_type_class_ref (SP_TYPE_LPE_ITEM);
116 object_class->dispose = sp_group_dispose;
118 sp_object_class->child_added = sp_group_child_added;
119 sp_object_class->remove_child = sp_group_remove_child;
120 sp_object_class->order_changed = sp_group_order_changed;
121 sp_object_class->update = sp_group_update;
122 sp_object_class->modified = sp_group_modified;
123 sp_object_class->set = sp_group_set;
124 sp_object_class->write = sp_group_write;
125 sp_object_class->release = sp_group_release;
126 sp_object_class->build = sp_group_build;
128 item_class->bbox = sp_group_bbox;
129 item_class->print = sp_group_print;
130 item_class->description = sp_group_description;
131 item_class->show = sp_group_show;
132 item_class->hide = sp_group_hide;
133 item_class->snappoints = sp_group_snappoints;
135 lpe_item_class->update_patheffect = sp_group_update_patheffect;
136 }
138 static void
139 sp_group_init (SPGroup *group)
140 {
141 group->_layer_mode = SPGroup::GROUP;
142 group->group = new CGroup(group);
143 new (&group->_display_modes) std::map<unsigned int, SPGroup::LayerMode>();
144 }
146 static void sp_group_build(SPObject *object, SPDocument *document, Inkscape::XML::Node *repr)
147 {
148 sp_object_read_attr(object, "inkscape:groupmode");
150 if (((SPObjectClass *)parent_class)->build) {
151 ((SPObjectClass *)parent_class)->build(object, document, repr);
152 }
153 }
155 static void sp_group_release(SPObject *object) {
156 if ( SP_GROUP(object)->_layer_mode == SPGroup::LAYER ) {
157 sp_document_remove_resource(SP_OBJECT_DOCUMENT(object), "layer", object);
158 }
159 if (((SPObjectClass *)parent_class)->release) {
160 ((SPObjectClass *)parent_class)->release(object);
161 }
162 }
164 static void
165 sp_group_dispose(GObject *object)
166 {
167 SP_GROUP(object)->_display_modes.~map();
168 delete SP_GROUP(object)->group;
169 }
171 static void
172 sp_group_child_added (SPObject *object, Inkscape::XML::Node *child, Inkscape::XML::Node *ref)
173 {
174 SPItem *item;
176 item = SP_ITEM (object);
178 if (((SPObjectClass *) (parent_class))->child_added)
179 (* ((SPObjectClass *) (parent_class))->child_added) (object, child, ref);
181 SP_GROUP(object)->group->onChildAdded(child);
182 }
184 /* fixme: hide (Lauris) */
186 static void
187 sp_group_remove_child (SPObject * object, Inkscape::XML::Node * child)
188 {
189 if (((SPObjectClass *) (parent_class))->remove_child)
190 (* ((SPObjectClass *) (parent_class))->remove_child) (object, child);
192 SP_GROUP(object)->group->onChildRemoved(child);
193 }
195 static void
196 sp_group_order_changed (SPObject *object, Inkscape::XML::Node *child, Inkscape::XML::Node *old_ref, Inkscape::XML::Node *new_ref)
197 {
198 if (((SPObjectClass *) (parent_class))->order_changed)
199 (* ((SPObjectClass *) (parent_class))->order_changed) (object, child, old_ref, new_ref);
201 SP_GROUP(object)->group->onOrderChanged(child, old_ref, new_ref);
202 }
204 static void
205 sp_group_update (SPObject *object, SPCtx *ctx, unsigned int flags)
206 {
207 if (((SPObjectClass *) (parent_class))->update)
208 ((SPObjectClass *) (parent_class))->update (object, ctx, flags);
210 SP_GROUP(object)->group->onUpdate(ctx, flags);
211 }
213 static void
214 sp_group_modified (SPObject *object, guint flags)
215 {
216 if (((SPObjectClass *) (parent_class))->modified)
217 ((SPObjectClass *) (parent_class))->modified (object, flags);
219 SP_GROUP(object)->group->onModified(flags);
220 }
222 static Inkscape::XML::Node *
223 sp_group_write (SPObject *object, Inkscape::XML::Document *xml_doc, Inkscape::XML::Node *repr, guint flags)
224 {
225 SPGroup *group;
226 SPObject *child;
227 Inkscape::XML::Node *crepr;
229 group = SP_GROUP (object);
231 if (flags & SP_OBJECT_WRITE_BUILD) {
232 GSList *l;
233 if (!repr) {
234 if (SP_IS_SWITCH(object))
235 repr = xml_doc->createElement("svg:switch");
236 else
237 repr = xml_doc->createElement("svg:g");
238 }
239 l = NULL;
240 for (child = sp_object_first_child(object); child != NULL; child = SP_OBJECT_NEXT(child) ) {
241 if (SP_IS_TITLE(child) || SP_IS_DESC(child)) continue;
242 crepr = child->updateRepr(xml_doc, NULL, flags);
243 if (crepr) l = g_slist_prepend (l, crepr);
244 }
245 while (l) {
246 repr->addChild((Inkscape::XML::Node *) l->data, NULL);
247 Inkscape::GC::release((Inkscape::XML::Node *) l->data);
248 l = g_slist_remove (l, l->data);
249 }
250 } else {
251 for (child = sp_object_first_child(object) ; child != NULL; child = SP_OBJECT_NEXT(child) ) {
252 if (SP_IS_TITLE(child) || SP_IS_DESC(child)) continue;
253 child->updateRepr(flags);
254 }
255 }
257 if ( flags & SP_OBJECT_WRITE_EXT ) {
258 const char *value;
259 if ( group->_layer_mode == SPGroup::LAYER ) {
260 value = "layer";
261 } else if ( group->_layer_mode == SPGroup::MASK_HELPER ) {
262 value = "maskhelper";
263 } else if ( flags & SP_OBJECT_WRITE_ALL ) {
264 value = "group";
265 } else {
266 value = NULL;
267 }
268 repr->setAttribute("inkscape:groupmode", value);
269 }
271 if (((SPObjectClass *) (parent_class))->write)
272 ((SPObjectClass *) (parent_class))->write (object, xml_doc, repr, flags);
274 return repr;
275 }
277 static void
278 sp_group_bbox(SPItem const *item, NRRect *bbox, Geom::Matrix const &transform, unsigned const flags)
279 {
280 SP_GROUP(item)->group->calculateBBox(bbox, transform, flags);
281 }
283 static void
284 sp_group_print (SPItem * item, SPPrintContext *ctx)
285 {
286 SP_GROUP(item)->group->onPrint(ctx);
287 }
289 static gchar * sp_group_description (SPItem * item)
290 {
291 return SP_GROUP(item)->group->getDescription();
292 }
294 static void sp_group_set(SPObject *object, unsigned key, char const *value) {
295 SPGroup *group = SP_GROUP(object);
297 switch (key) {
298 case SP_ATTR_INKSCAPE_GROUPMODE:
299 if ( value && !strcmp(value, "layer") ) {
300 group->setLayerMode(SPGroup::LAYER);
301 } else if ( value && !strcmp(value, "maskhelper") ) {
302 group->setLayerMode(SPGroup::MASK_HELPER);
303 } else {
304 group->setLayerMode(SPGroup::GROUP);
305 }
306 break;
307 default: {
308 if (((SPObjectClass *) (parent_class))->set) {
309 (* ((SPObjectClass *) (parent_class))->set)(object, key, value);
310 }
311 }
312 }
313 }
315 static NRArenaItem *
316 sp_group_show (SPItem *item, NRArena *arena, unsigned int key, unsigned int flags)
317 {
318 return SP_GROUP(item)->group->show(arena, key, flags);
319 }
321 static void
322 sp_group_hide (SPItem *item, unsigned int key)
323 {
324 SP_GROUP(item)->group->hide(key);
325 }
327 static void sp_group_snappoints (SPItem const *item, std::vector<Inkscape::SnapCandidatePoint> &p, Inkscape::SnapPreferences const *snapprefs)
328 {
329 for (SPObject const *o = sp_object_first_child(SP_OBJECT(item));
330 o != NULL;
331 o = SP_OBJECT_NEXT(o))
332 {
333 if (SP_IS_ITEM(o)) {
334 sp_item_snappoints(SP_ITEM(o), p, snapprefs);
335 }
336 }
337 }
340 void
341 sp_item_group_ungroup (SPGroup *group, GSList **children, bool do_done)
342 {
343 g_return_if_fail (group != NULL);
344 g_return_if_fail (SP_IS_GROUP (group));
346 SPDocument *doc = SP_OBJECT_DOCUMENT (group);
347 SPObject *root = SP_DOCUMENT_ROOT (doc);
348 SPObject *defs = SP_OBJECT (SP_ROOT (root)->defs);
350 SPItem *gitem = SP_ITEM (group);
351 Inkscape::XML::Node *grepr = SP_OBJECT_REPR (gitem);
353 g_return_if_fail (!strcmp (grepr->name(), "svg:g") || !strcmp (grepr->name(), "svg:a") || !strcmp (grepr->name(), "svg:switch"));
355 // this converts the gradient/pattern fill/stroke on the group, if any, to userSpaceOnUse
356 sp_item_adjust_paint_recursive (gitem, Geom::identity(), Geom::identity(), false);
358 SPItem *pitem = SP_ITEM (SP_OBJECT_PARENT (gitem));
359 Inkscape::XML::Node *prepr = SP_OBJECT_REPR (pitem);
361 if (SP_IS_BOX3D(gitem)) {
362 group = box3d_convert_to_group(SP_BOX3D(gitem));
363 gitem = SP_ITEM(group);
364 }
366 sp_lpe_item_remove_all_path_effects(SP_LPE_ITEM(group), false);
368 /* Step 1 - generate lists of children objects */
369 GSList *items = NULL;
370 GSList *objects = NULL;
371 for (SPObject *child = sp_object_first_child(SP_OBJECT(group)) ; child != NULL; child = SP_OBJECT_NEXT(child) ) {
373 if (SP_IS_ITEM (child)) {
375 SPItem *citem = SP_ITEM (child);
377 /* Merging of style */
378 // this converts the gradient/pattern fill/stroke, if any, to userSpaceOnUse; we need to do
379 // it here _before_ the new transform is set, so as to use the pre-transform bbox
380 sp_item_adjust_paint_recursive (citem, Geom::identity(), Geom::identity(), false);
382 sp_style_merge_from_dying_parent(SP_OBJECT_STYLE(child), SP_OBJECT_STYLE(gitem));
383 /*
384 * fixme: We currently make no allowance for the case where child is cloned
385 * and the group has any style settings.
386 *
387 * (This should never occur with documents created solely with the current
388 * version of inkscape without using the XML editor: we usually apply group
389 * style changes to children rather than to the group itself.)
390 *
391 * If the group has no style settings, then
392 * sp_style_merge_from_dying_parent should be a no-op. Otherwise (i.e. if
393 * we change the child's style to compensate for its parent going away)
394 * then those changes will typically be reflected in any clones of child,
395 * whereas we'd prefer for Ungroup not to affect the visual appearance.
396 *
397 * The only way of preserving styling appearance in general is for child to
398 * be put into a new group -- a somewhat surprising response to an Ungroup
399 * command. We could add a new groupmode:transparent that would mostly
400 * hide the existence of such groups from the user (i.e. editing behaves as
401 * if the transparent group's children weren't in a group), though that's
402 * extra complication & maintenance burden and this case is rare.
403 */
405 child->updateRepr();
407 Inkscape::XML::Node *nrepr = SP_OBJECT_REPR (child)->duplicate(prepr->document());
409 // Merging transform
410 Geom::Matrix ctrans;
411 Geom::Matrix const g(gitem->transform);
412 if (SP_IS_USE(citem) && sp_use_get_original (SP_USE(citem)) &&
413 SP_OBJECT_PARENT (sp_use_get_original (SP_USE(citem))) == SP_OBJECT(group)) {
414 // make sure a clone's effective transform is the same as was under group
415 ctrans = g.inverse() * citem->transform * g;
416 } else {
417 // We should not apply the group's transformation to both a linked offset AND to its source
418 if (SP_IS_OFFSET(citem)) { // Do we have an offset at hand (whether it's dynamic or linked)?
419 SPItem *source = sp_offset_get_source(SP_OFFSET(citem));
420 // When dealing with a chain of linked offsets, the transformation of an offset will be
421 // tied to the transformation of the top-most source, not to any of the intermediate
422 // offsets. So let's find the top-most source
423 while (source != NULL && SP_IS_OFFSET(source)) {
424 source = sp_offset_get_source(SP_OFFSET(source));
425 }
426 if (source != NULL && // If true then we must be dealing with a linked offset ...
427 SP_OBJECT(group)->isAncestorOf(SP_OBJECT(source)) == false) { // ... of which the source is not in the same group
428 ctrans = citem->transform * g; // then we should apply the transformation of the group to the offset
429 } else {
430 ctrans = citem->transform;
431 }
432 } else {
433 ctrans = citem->transform * g;
434 }
435 }
437 // FIXME: constructing a transform that would fully preserve the appearance of a
438 // textpath if it is ungrouped with its path seems to be impossible in general
439 // case. E.g. if the group was squeezed, to keep the ungrouped textpath squeezed
440 // as well, we'll need to relink it to some "virtual" path which is inversely
441 // stretched relative to the actual path, and then squeeze the textpath back so it
442 // would both fit the actual path _and_ be squeezed as before. It's a bummer.
444 // This is just a way to temporarily remember the transform in repr. When repr is
445 // reattached outside of the group, the transform will be written more properly
446 // (i.e. optimized into the object if the corresponding preference is set)
447 gchar *affinestr=sp_svg_transform_write(ctrans);
448 nrepr->setAttribute("transform", affinestr);
449 g_free(affinestr);
451 items = g_slist_prepend (items, nrepr);
453 } else {
454 Inkscape::XML::Node *nrepr = SP_OBJECT_REPR (child)->duplicate(prepr->document());
455 objects = g_slist_prepend (objects, nrepr);
456 }
457 }
459 /* Step 2 - clear group */
460 // remember the position of the group
461 gint pos = SP_OBJECT_REPR(group)->position();
463 // the group is leaving forever, no heir, clones should take note; its children however are going to reemerge
464 SP_OBJECT (group)->deleteObject(true, false);
466 /* Step 3 - add nonitems */
467 if (objects) {
468 Inkscape::XML::Node *last_def = SP_OBJECT_REPR(defs)->lastChild();
469 while (objects) {
470 Inkscape::XML::Node *repr = (Inkscape::XML::Node *) objects->data;
471 if (!sp_repr_is_meta_element(repr))
472 SP_OBJECT_REPR(defs)->addChild(repr, last_def);
473 Inkscape::GC::release(repr);
474 objects = g_slist_remove (objects, objects->data);
475 }
476 }
478 /* Step 4 - add items */
479 while (items) {
480 Inkscape::XML::Node *repr = (Inkscape::XML::Node *) items->data;
481 // add item
482 prepr->appendChild(repr);
483 // restore position; since the items list was prepended (i.e. reverse), we now add
484 // all children at the same pos, which inverts the order once again
485 repr->setPosition(pos > 0 ? pos : 0);
487 // fill in the children list if non-null
488 SPItem *item = (SPItem *) doc->getObjectByRepr(repr);
490 sp_item_write_transform(item, repr, item->transform, NULL, false);
492 Inkscape::GC::release(repr);
493 if (children && SP_IS_ITEM (item))
494 *children = g_slist_prepend (*children, item);
496 items = g_slist_remove (items, items->data);
497 }
499 if (do_done)
500 sp_document_done (doc, SP_VERB_NONE, _("Ungroup"));
501 }
503 /*
504 * some API for list aspect of SPGroup
505 */
507 GSList *
508 sp_item_group_item_list (SPGroup * group)
509 {
510 g_return_val_if_fail (group != NULL, NULL);
511 g_return_val_if_fail (SP_IS_GROUP (group), NULL);
513 GSList *s = NULL;
515 for (SPObject *o = sp_object_first_child(SP_OBJECT(group)) ; o != NULL ; o = SP_OBJECT_NEXT(o) ) {
516 if (SP_IS_ITEM (o)) {
517 s = g_slist_prepend (s, o);
518 }
519 }
521 return g_slist_reverse (s);
522 }
524 SPObject *
525 sp_item_group_get_child_by_name (SPGroup *group, SPObject *ref, const gchar *name)
526 {
527 SPObject *child;
528 child = (ref) ? SP_OBJECT_NEXT(ref) : sp_object_first_child(SP_OBJECT(group));
529 while ( child && strcmp (SP_OBJECT_REPR(child)->name(), name) ) {
530 child = SP_OBJECT_NEXT(child);
531 }
532 return child;
533 }
535 void SPGroup::setLayerMode(LayerMode mode) {
536 if ( _layer_mode != mode ) {
537 if ( mode == LAYER ) {
538 sp_document_add_resource(SP_OBJECT_DOCUMENT(this), "layer", this);
539 } else if ( _layer_mode == LAYER ) {
540 sp_document_remove_resource(SP_OBJECT_DOCUMENT(this), "layer", this);
541 }
542 _layer_mode = mode;
543 _updateLayerMode();
544 }
545 }
547 SPGroup::LayerMode SPGroup::layerDisplayMode(unsigned int dkey) const {
548 std::map<unsigned int, LayerMode>::const_iterator iter;
549 iter = _display_modes.find(dkey);
550 if ( iter != _display_modes.end() ) {
551 return (*iter).second;
552 } else {
553 return GROUP;
554 }
555 }
557 void SPGroup::setLayerDisplayMode(unsigned int dkey, SPGroup::LayerMode mode) {
558 if ( layerDisplayMode(dkey) != mode ) {
559 _display_modes[dkey] = mode;
560 _updateLayerMode(dkey);
561 }
562 }
564 void SPGroup::_updateLayerMode(unsigned int display_key) {
565 SPItemView *view;
566 for ( view = this->display ; view ; view = view->next ) {
567 if ( !display_key || view->key == display_key ) {
568 NRArenaGroup *arena_group=NR_ARENA_GROUP(view->arenaitem);
569 if (arena_group) {
570 nr_arena_group_set_transparent(arena_group, effectiveLayerMode(view->key) == SPGroup::LAYER);
571 }
572 }
573 }
574 }
576 void SPGroup::translateChildItems(Geom::Translate const &tr)
577 {
578 if (this->hasChildren())
579 {
580 SPObject *o = NULL;
581 for (o = sp_object_first_child(SP_OBJECT(this)) ; o != NULL ; o = SP_OBJECT_NEXT(o) ) {
582 if (SP_IS_ITEM (o)) {
583 sp_item_move_rel(static_cast<SPItem *>(o), tr);
584 }
585 }
586 }
587 }
589 CGroup::CGroup(SPGroup *group) {
590 _group = group;
591 }
593 CGroup::~CGroup() {
594 }
596 void CGroup::onChildAdded(Inkscape::XML::Node *child) {
597 SPObject *last_child = _group->lastChild();
598 if (last_child && SP_OBJECT_REPR(last_child) == child) {
599 // optimization for the common special case where the child is being added at the end
600 SPObject *ochild = last_child;
601 if ( SP_IS_ITEM(ochild) ) {
602 /* TODO: this should be moved into SPItem somehow */
603 SPItemView *v;
604 NRArenaItem *ac;
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_append_child (v->arenaitem, ac);
611 }
612 }
613 }
614 } else { // general case
615 SPObject *ochild = sp_object_get_child_by_repr(_group, child);
616 if ( ochild && SP_IS_ITEM(ochild) ) {
617 /* TODO: this should be moved into SPItem somehow */
618 SPItemView *v;
619 NRArenaItem *ac;
621 unsigned position = sp_item_pos_in_parent(SP_ITEM(ochild));
623 for (v = _group->display; v != NULL; v = v->next) {
624 ac = sp_item_invoke_show (SP_ITEM (ochild), NR_ARENA_ITEM_ARENA (v->arenaitem), v->key, v->flags);
626 if (ac) {
627 nr_arena_item_add_child (v->arenaitem, ac, NULL);
628 nr_arena_item_set_order (ac, position);
629 }
630 }
631 }
632 }
634 _group->requestModified(SP_OBJECT_MODIFIED_FLAG);
635 }
637 void CGroup::onChildRemoved(Inkscape::XML::Node */*child*/) {
638 _group->requestModified(SP_OBJECT_MODIFIED_FLAG);
639 }
641 void CGroup::onUpdate(SPCtx *ctx, unsigned int flags) {
642 SPItemCtx *ictx, cctx;
644 ictx = (SPItemCtx *) ctx;
645 cctx = *ictx;
647 if (flags & SP_OBJECT_MODIFIED_FLAG) {
648 flags |= SP_OBJECT_PARENT_MODIFIED_FLAG;
649 }
651 flags &= SP_OBJECT_MODIFIED_CASCADE;
653 if (flags & SP_OBJECT_STYLE_MODIFIED_FLAG) {
654 SPObject *object = SP_OBJECT(_group);
655 for (SPItemView *v = SP_ITEM(_group)->display; v != NULL; v = v->next) {
656 nr_arena_group_set_style(NR_ARENA_GROUP(v->arenaitem), SP_OBJECT_STYLE(object));
657 }
658 }
660 GSList *l = g_slist_reverse(_group->childList(true, SPObject::ActionUpdate));
661 while (l) {
662 SPObject *child = SP_OBJECT (l->data);
663 l = g_slist_remove (l, child);
664 if (flags || (child->uflags & (SP_OBJECT_MODIFIED_FLAG | SP_OBJECT_CHILD_MODIFIED_FLAG))) {
665 if (SP_IS_ITEM (child)) {
666 SPItem const &chi = *SP_ITEM(child);
667 cctx.i2doc = chi.transform * ictx->i2doc;
668 cctx.i2vp = chi.transform * ictx->i2vp;
669 child->updateDisplay((SPCtx *)&cctx, flags);
670 } else {
671 child->updateDisplay(ctx, flags);
672 }
673 }
674 g_object_unref (G_OBJECT (child));
675 }
676 }
678 void CGroup::onModified(guint flags) {
679 SPObject *child;
681 if (flags & SP_OBJECT_MODIFIED_FLAG) flags |= SP_OBJECT_PARENT_MODIFIED_FLAG;
682 flags &= SP_OBJECT_MODIFIED_CASCADE;
684 if (flags & SP_OBJECT_STYLE_MODIFIED_FLAG) {
685 SPObject *object = SP_OBJECT(_group);
686 for (SPItemView *v = SP_ITEM(_group)->display; v != NULL; v = v->next) {
687 nr_arena_group_set_style(NR_ARENA_GROUP(v->arenaitem), SP_OBJECT_STYLE(object));
688 }
689 }
691 GSList *l = g_slist_reverse(_group->childList(true));
692 while (l) {
693 child = SP_OBJECT (l->data);
694 l = g_slist_remove (l, child);
695 if (flags || (child->mflags & (SP_OBJECT_MODIFIED_FLAG | SP_OBJECT_CHILD_MODIFIED_FLAG))) {
696 child->emitModified(flags);
697 }
698 g_object_unref (G_OBJECT (child));
699 }
700 }
702 void CGroup::calculateBBox(NRRect *bbox, Geom::Matrix const &transform, unsigned const flags) {
704 Geom::OptRect dummy_bbox;
706 GSList *l = _group->childList(false, SPObject::ActionBBox);
707 while (l) {
708 SPObject *o = SP_OBJECT (l->data);
709 if (SP_IS_ITEM(o) && !SP_ITEM(o)->isHidden()) {
710 SPItem *child = SP_ITEM(o);
711 Geom::Matrix const ct(to_2geom(child->transform) * transform);
712 sp_item_invoke_bbox_full(child, dummy_bbox, ct, flags, FALSE);
713 }
714 l = g_slist_remove (l, o);
715 }
717 *bbox = NRRect(dummy_bbox);
718 }
720 void CGroup::onPrint(SPPrintContext *ctx) {
721 GSList *l = g_slist_reverse(_group->childList(false));
722 while (l) {
723 SPObject *o = SP_OBJECT (l->data);
724 if (SP_IS_ITEM(o)) {
725 sp_item_invoke_print (SP_ITEM (o), ctx);
726 }
727 l = g_slist_remove (l, o);
728 }
729 }
731 gint CGroup::getItemCount() {
732 gint len = 0;
733 for (SPObject *o = sp_object_first_child(SP_OBJECT(_group)) ; o != NULL ; o = SP_OBJECT_NEXT(o) ) {
734 if (SP_IS_ITEM(o)) {
735 len++;
736 }
737 }
739 return len;
740 }
742 gchar *CGroup::getDescription() {
743 gint len = getItemCount();
744 return g_strdup_printf(
745 ngettext("<b>Group</b> of <b>%d</b> object",
746 "<b>Group</b> of <b>%d</b> objects",
747 len), len);
748 }
750 NRArenaItem *CGroup::show (NRArena *arena, unsigned int key, unsigned int flags) {
751 NRArenaItem *ai;
752 SPObject *object = SP_OBJECT(_group);
754 ai = NRArenaGroup::create(arena);
756 nr_arena_group_set_transparent(NR_ARENA_GROUP (ai),
757 _group->effectiveLayerMode(key) ==
758 SPGroup::LAYER);
759 nr_arena_group_set_style(NR_ARENA_GROUP(ai), SP_OBJECT_STYLE(object));
761 _showChildren(arena, ai, key, flags);
762 return ai;
763 }
765 void CGroup::_showChildren (NRArena *arena, NRArenaItem *ai, unsigned int key, unsigned int flags) {
766 NRArenaItem *ac = NULL;
767 NRArenaItem *ar = NULL;
768 SPItem * child = NULL;
769 GSList *l = g_slist_reverse(_group->childList(false, SPObject::ActionShow));
770 while (l) {
771 SPObject *o = SP_OBJECT (l->data);
772 if (SP_IS_ITEM (o)) {
773 child = SP_ITEM (o);
774 ac = sp_item_invoke_show (child, arena, key, flags);
775 if (ac) {
776 nr_arena_item_add_child (ai, ac, ar);
777 ar = ac;
778 }
779 }
780 l = g_slist_remove (l, o);
781 }
782 }
784 void CGroup::hide (unsigned int key) {
785 SPItem * child;
787 GSList *l = g_slist_reverse(_group->childList(false, SPObject::ActionShow));
788 while (l) {
789 SPObject *o = SP_OBJECT (l->data);
790 if (SP_IS_ITEM (o)) {
791 child = SP_ITEM (o);
792 sp_item_invoke_hide (child, key);
793 }
794 l = g_slist_remove (l, o);
795 }
797 if (((SPItemClass *) parent_class)->hide)
798 ((SPItemClass *) parent_class)->hide (_group, key);
799 }
801 void CGroup::onOrderChanged (Inkscape::XML::Node *child, Inkscape::XML::Node *, Inkscape::XML::Node *)
802 {
803 SPObject *ochild = sp_object_get_child_by_repr(_group, child);
804 if ( ochild && SP_IS_ITEM(ochild) ) {
805 /* TODO: this should be moved into SPItem somehow */
806 SPItemView *v;
807 unsigned position = sp_item_pos_in_parent(SP_ITEM(ochild));
808 for ( v = SP_ITEM (ochild)->display ; v != NULL ; v = v->next ) {
809 nr_arena_item_set_order (v->arenaitem, position);
810 }
811 }
813 _group->requestModified(SP_OBJECT_MODIFIED_FLAG);
814 }
816 static void
817 sp_group_update_patheffect (SPLPEItem *lpeitem, bool write)
818 {
819 #ifdef GROUP_VERBOSE
820 g_message("sp_group_update_patheffect: %p\n", lpeitem);
821 #endif
822 g_return_if_fail (lpeitem != NULL);
823 g_return_if_fail (SP_IS_GROUP (lpeitem));
825 GSList const *item_list = sp_item_group_item_list(SP_GROUP(lpeitem));
826 for ( GSList const *iter = item_list; iter; iter = iter->next ) {
827 SPObject *subitem = static_cast<SPObject *>(iter->data);
828 if (SP_IS_LPE_ITEM(subitem)) {
829 if (SP_LPE_ITEM_CLASS (G_OBJECT_GET_CLASS (subitem))->update_patheffect) {
830 SP_LPE_ITEM_CLASS (G_OBJECT_GET_CLASS (subitem))->update_patheffect (SP_LPE_ITEM(subitem), write);
831 }
832 }
833 }
835 if (sp_lpe_item_has_path_effect(lpeitem) && sp_lpe_item_path_effects_enabled(lpeitem)) {
836 for (PathEffectList::iterator it = lpeitem->path_effect_list->begin(); it != lpeitem->path_effect_list->end(); it++)
837 {
838 LivePathEffectObject *lpeobj = (*it)->lpeobject;
839 if (lpeobj && lpeobj->get_lpe()) {
840 lpeobj->get_lpe()->doBeforeEffect(lpeitem);
841 }
842 }
844 sp_group_perform_patheffect(SP_GROUP(lpeitem), SP_GROUP(lpeitem), write);
845 }
846 }
848 static void
849 sp_group_perform_patheffect(SPGroup *group, SPGroup *topgroup, bool write)
850 {
851 GSList const *item_list = sp_item_group_item_list(SP_GROUP(group));
852 for ( GSList const *iter = item_list; iter; iter = iter->next ) {
853 SPObject *subitem = static_cast<SPObject *>(iter->data);
854 if (SP_IS_GROUP(subitem)) {
855 sp_group_perform_patheffect(SP_GROUP(subitem), topgroup, write);
856 } else if (SP_IS_SHAPE(subitem)) {
857 SPCurve * c = NULL;
858 if (SP_IS_PATH(subitem)) {
859 c = sp_path_get_original_curve(SP_PATH(subitem));
860 } else {
861 c = sp_shape_get_curve(SP_SHAPE(subitem));
862 }
863 // only run LPEs when the shape has a curve defined
864 if (c) {
865 sp_lpe_item_perform_path_effect(SP_LPE_ITEM(topgroup), c);
866 sp_shape_set_curve(SP_SHAPE(subitem), c, TRUE);
868 if (write) {
869 Inkscape::XML::Node *repr = SP_OBJECT_REPR(subitem);
870 gchar *str = sp_svg_write_path(c->get_pathvector());
871 repr->setAttribute("d", str);
872 #ifdef GROUP_VERBOSE
873 g_message("sp_group_perform_patheffect writes 'd' attribute");
874 #endif
875 g_free(str);
876 }
878 c->unref();
879 }
880 }
881 }
882 }
884 /*
885 Local Variables:
886 mode:c++
887 c-file-style:"stroustrup"
888 c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
889 indent-tabs-mode:nil
890 fill-column:99
891 End:
892 */
893 // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4 :