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 Geom::Matrix sp_group_set_transform(SPItem *item, Geom::Matrix const &xform);
71 static NRArenaItem *sp_group_show (SPItem *item, NRArena *arena, unsigned int key, unsigned int flags);
72 static void sp_group_hide (SPItem * item, unsigned int key);
73 static void sp_group_snappoints (SPItem const *item, bool const target, SnapPointsWithType &p, Inkscape::SnapPreferences const *snapprefs);
75 static void sp_group_update_patheffect(SPLPEItem *lpeitem, bool write);
76 static void sp_group_perform_patheffect(SPGroup *group, SPGroup *topgroup, bool write);
78 static SPLPEItemClass * parent_class;
80 GType
81 sp_group_get_type (void)
82 {
83 static GType group_type = 0;
84 if (!group_type) {
85 GTypeInfo group_info = {
86 sizeof (SPGroupClass),
87 NULL, /* base_init */
88 NULL, /* base_finalize */
89 (GClassInitFunc) sp_group_class_init,
90 NULL, /* class_finalize */
91 NULL, /* class_data */
92 sizeof (SPGroup),
93 16, /* n_preallocs */
94 (GInstanceInitFunc) sp_group_init,
95 NULL, /* value_table */
96 };
97 group_type = g_type_register_static (SP_TYPE_LPE_ITEM, "SPGroup", &group_info, (GTypeFlags)0);
98 }
99 return group_type;
100 }
102 static void
103 sp_group_class_init (SPGroupClass *klass)
104 {
105 GObjectClass * object_class;
106 SPObjectClass * sp_object_class;
107 SPItemClass * item_class;
108 SPLPEItemClass * lpe_item_class;
110 object_class = (GObjectClass *) klass;
111 sp_object_class = (SPObjectClass *) klass;
112 item_class = (SPItemClass *) klass;
113 lpe_item_class = (SPLPEItemClass *) klass;
115 parent_class = (SPLPEItemClass *)g_type_class_ref (SP_TYPE_LPE_ITEM);
117 object_class->dispose = sp_group_dispose;
119 sp_object_class->child_added = sp_group_child_added;
120 sp_object_class->remove_child = sp_group_remove_child;
121 sp_object_class->order_changed = sp_group_order_changed;
122 sp_object_class->update = sp_group_update;
123 sp_object_class->modified = sp_group_modified;
124 sp_object_class->set = sp_group_set;
125 sp_object_class->write = sp_group_write;
126 sp_object_class->release = sp_group_release;
127 sp_object_class->build = sp_group_build;
129 item_class->bbox = sp_group_bbox;
130 item_class->print = sp_group_print;
131 item_class->description = sp_group_description;
132 item_class->set_transform = sp_group_set_transform;
133 item_class->show = sp_group_show;
134 item_class->hide = sp_group_hide;
135 item_class->snappoints = sp_group_snappoints;
137 lpe_item_class->update_patheffect = sp_group_update_patheffect;
138 }
140 static void
141 sp_group_init (SPGroup *group)
142 {
143 group->_layer_mode = SPGroup::GROUP;
144 group->group = new CGroup(group);
145 new (&group->_display_modes) std::map<unsigned int, SPGroup::LayerMode>();
146 }
148 static void sp_group_build(SPObject *object, SPDocument *document, Inkscape::XML::Node *repr)
149 {
150 sp_object_read_attr(object, "inkscape:groupmode");
152 if (((SPObjectClass *)parent_class)->build) {
153 ((SPObjectClass *)parent_class)->build(object, document, repr);
154 }
155 }
157 static void sp_group_release(SPObject *object) {
158 if ( SP_GROUP(object)->_layer_mode == SPGroup::LAYER ) {
159 sp_document_remove_resource(SP_OBJECT_DOCUMENT(object), "layer", object);
160 }
161 if (((SPObjectClass *)parent_class)->release) {
162 ((SPObjectClass *)parent_class)->release(object);
163 }
164 }
166 static void
167 sp_group_dispose(GObject *object)
168 {
169 SP_GROUP(object)->_display_modes.~map();
170 delete SP_GROUP(object)->group;
171 }
173 static void
174 sp_group_child_added (SPObject *object, Inkscape::XML::Node *child, Inkscape::XML::Node *ref)
175 {
176 SPItem *item;
178 item = SP_ITEM (object);
180 if (((SPObjectClass *) (parent_class))->child_added)
181 (* ((SPObjectClass *) (parent_class))->child_added) (object, child, ref);
183 SP_GROUP(object)->group->onChildAdded(child);
184 }
186 /* fixme: hide (Lauris) */
188 static void
189 sp_group_remove_child (SPObject * object, Inkscape::XML::Node * child)
190 {
191 if (((SPObjectClass *) (parent_class))->remove_child)
192 (* ((SPObjectClass *) (parent_class))->remove_child) (object, child);
194 SP_GROUP(object)->group->onChildRemoved(child);
195 }
197 static void
198 sp_group_order_changed (SPObject *object, Inkscape::XML::Node *child, Inkscape::XML::Node *old_ref, Inkscape::XML::Node *new_ref)
199 {
200 if (((SPObjectClass *) (parent_class))->order_changed)
201 (* ((SPObjectClass *) (parent_class))->order_changed) (object, child, old_ref, new_ref);
203 SP_GROUP(object)->group->onOrderChanged(child, old_ref, new_ref);
204 }
206 static void
207 sp_group_update (SPObject *object, SPCtx *ctx, unsigned int flags)
208 {
209 if (((SPObjectClass *) (parent_class))->update)
210 ((SPObjectClass *) (parent_class))->update (object, ctx, flags);
212 SP_GROUP(object)->group->onUpdate(ctx, flags);
213 }
215 static void
216 sp_group_modified (SPObject *object, guint flags)
217 {
218 if (((SPObjectClass *) (parent_class))->modified)
219 ((SPObjectClass *) (parent_class))->modified (object, flags);
221 SP_GROUP(object)->group->onModified(flags);
222 }
224 static Inkscape::XML::Node *
225 sp_group_write (SPObject *object, Inkscape::XML::Document *xml_doc, Inkscape::XML::Node *repr, guint flags)
226 {
227 SPGroup *group;
228 SPObject *child;
229 Inkscape::XML::Node *crepr;
231 group = SP_GROUP (object);
233 if (flags & SP_OBJECT_WRITE_BUILD) {
234 GSList *l;
235 if (!repr) {
236 if (SP_IS_SWITCH(object))
237 repr = xml_doc->createElement("svg:switch");
238 else
239 repr = xml_doc->createElement("svg:g");
240 }
241 l = NULL;
242 for (child = sp_object_first_child(object); child != NULL; child = SP_OBJECT_NEXT(child) ) {
243 if (SP_IS_TITLE(child) || SP_IS_DESC(child)) continue;
244 crepr = child->updateRepr(xml_doc, NULL, flags);
245 if (crepr) l = g_slist_prepend (l, crepr);
246 }
247 while (l) {
248 repr->addChild((Inkscape::XML::Node *) l->data, NULL);
249 Inkscape::GC::release((Inkscape::XML::Node *) l->data);
250 l = g_slist_remove (l, l->data);
251 }
252 } else {
253 for (child = sp_object_first_child(object) ; child != NULL; child = SP_OBJECT_NEXT(child) ) {
254 if (SP_IS_TITLE(child) || SP_IS_DESC(child)) continue;
255 child->updateRepr(flags);
256 }
257 }
259 if ( flags & SP_OBJECT_WRITE_EXT ) {
260 const char *value;
261 if ( group->_layer_mode == SPGroup::LAYER ) {
262 value = "layer";
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 Geom::Matrix
295 sp_group_set_transform(SPItem *item, Geom::Matrix const &xform)
296 {
297 Inkscape::Selection *selection = sp_desktop_selection(inkscape_active_desktop());
298 persp3d_split_perspectives_according_to_selection(selection);
300 Geom::Matrix last_trans;
301 sp_svg_transform_read(SP_OBJECT_REPR(item)->attribute("transform"), &last_trans);
302 Geom::Matrix inc_trans = last_trans.inverse()*xform;
304 std::list<Persp3D *> plist = selection->perspList();
305 for (std::list<Persp3D *>::iterator i = plist.begin(); i != plist.end(); ++i) {
306 persp3d_apply_affine_transformation(*i, inc_trans);
307 }
309 return xform;
310 }
312 static void sp_group_set(SPObject *object, unsigned key, char const *value) {
313 SPGroup *group = SP_GROUP(object);
315 switch (key) {
316 case SP_ATTR_INKSCAPE_GROUPMODE:
317 if ( value && !strcmp(value, "layer") ) {
318 group->setLayerMode(SPGroup::LAYER);
319 } else {
320 group->setLayerMode(SPGroup::GROUP);
321 }
322 break;
323 default: {
324 if (((SPObjectClass *) (parent_class))->set) {
325 (* ((SPObjectClass *) (parent_class))->set)(object, key, value);
326 }
327 }
328 }
329 }
331 static NRArenaItem *
332 sp_group_show (SPItem *item, NRArena *arena, unsigned int key, unsigned int flags)
333 {
334 return SP_GROUP(item)->group->show(arena, key, flags);
335 }
337 static void
338 sp_group_hide (SPItem *item, unsigned int key)
339 {
340 SP_GROUP(item)->group->hide(key);
341 }
343 static void sp_group_snappoints (SPItem const *item, bool const target, SnapPointsWithType &p, Inkscape::SnapPreferences const *snapprefs)
344 {
345 for (SPObject const *o = sp_object_first_child(SP_OBJECT(item));
346 o != NULL;
347 o = SP_OBJECT_NEXT(o))
348 {
349 if (SP_IS_ITEM(o)) {
350 sp_item_snappoints(SP_ITEM(o), target, p, snapprefs);
351 }
352 }
353 }
356 void
357 sp_item_group_ungroup (SPGroup *group, GSList **children, bool do_done)
358 {
359 g_return_if_fail (group != NULL);
360 g_return_if_fail (SP_IS_GROUP (group));
362 SPDocument *doc = SP_OBJECT_DOCUMENT (group);
363 SPObject *root = SP_DOCUMENT_ROOT (doc);
364 SPObject *defs = SP_OBJECT (SP_ROOT (root)->defs);
366 SPItem *gitem = SP_ITEM (group);
367 Inkscape::XML::Node *grepr = SP_OBJECT_REPR (gitem);
369 g_return_if_fail (!strcmp (grepr->name(), "svg:g") || !strcmp (grepr->name(), "svg:a") || !strcmp (grepr->name(), "svg:switch"));
371 // this converts the gradient/pattern fill/stroke on the group, if any, to userSpaceOnUse
372 sp_item_adjust_paint_recursive (gitem, Geom::identity(), Geom::identity(), false);
374 SPItem *pitem = SP_ITEM (SP_OBJECT_PARENT (gitem));
375 Inkscape::XML::Node *prepr = SP_OBJECT_REPR (pitem);
377 if (SP_IS_BOX3D(gitem)) {
378 group = box3d_convert_to_group(SP_BOX3D(gitem));
379 gitem = SP_ITEM(group);
380 }
382 sp_lpe_item_remove_all_path_effects(SP_LPE_ITEM(group), false);
384 /* Step 1 - generate lists of children objects */
385 GSList *items = NULL;
386 GSList *objects = NULL;
387 for (SPObject *child = sp_object_first_child(SP_OBJECT(group)) ; child != NULL; child = SP_OBJECT_NEXT(child) ) {
389 if (SP_IS_ITEM (child)) {
391 SPItem *citem = SP_ITEM (child);
393 /* Merging of style */
394 // this converts the gradient/pattern fill/stroke, if any, to userSpaceOnUse; we need to do
395 // it here _before_ the new transform is set, so as to use the pre-transform bbox
396 sp_item_adjust_paint_recursive (citem, Geom::identity(), Geom::identity(), false);
398 sp_style_merge_from_dying_parent(SP_OBJECT_STYLE(child), SP_OBJECT_STYLE(gitem));
399 /*
400 * fixme: We currently make no allowance for the case where child is cloned
401 * and the group has any style settings.
402 *
403 * (This should never occur with documents created solely with the current
404 * version of inkscape without using the XML editor: we usually apply group
405 * style changes to children rather than to the group itself.)
406 *
407 * If the group has no style settings, then
408 * sp_style_merge_from_dying_parent should be a no-op. Otherwise (i.e. if
409 * we change the child's style to compensate for its parent going away)
410 * then those changes will typically be reflected in any clones of child,
411 * whereas we'd prefer for Ungroup not to affect the visual appearance.
412 *
413 * The only way of preserving styling appearance in general is for child to
414 * be put into a new group -- a somewhat surprising response to an Ungroup
415 * command. We could add a new groupmode:transparent that would mostly
416 * hide the existence of such groups from the user (i.e. editing behaves as
417 * if the transparent group's children weren't in a group), though that's
418 * extra complication & maintenance burden and this case is rare.
419 */
421 child->updateRepr();
423 Inkscape::XML::Node *nrepr = SP_OBJECT_REPR (child)->duplicate(prepr->document());
425 // Merging transform
426 Geom::Matrix ctrans;
427 Geom::Matrix const g(gitem->transform);
428 if (SP_IS_USE(citem) && sp_use_get_original (SP_USE(citem)) &&
429 SP_OBJECT_PARENT (sp_use_get_original (SP_USE(citem))) == SP_OBJECT(group)) {
430 // make sure a clone's effective transform is the same as was under group
431 ctrans = g.inverse() * citem->transform * g;
432 } else {
433 // We should not apply the group's transformation to both a linked offset AND to its source
434 if (SP_IS_OFFSET(citem)) { // Do we have an offset at hand (whether it's dynamic or linked)?
435 SPItem *source = sp_offset_get_source(SP_OFFSET(citem));
436 // When dealing with a chain of linked offsets, the transformation of an offset will be
437 // tied to the transformation of the top-most source, not to any of the intermediate
438 // offsets. So let's find the top-most source
439 while (source != NULL && SP_IS_OFFSET(source)) {
440 source = sp_offset_get_source(SP_OFFSET(source));
441 }
442 if (source != NULL && // If true then we must be dealing with a linked offset ...
443 SP_OBJECT(group)->isAncestorOf(SP_OBJECT(source)) == false) { // ... of which the source is not in the same group
444 ctrans = citem->transform * g; // then we should apply the transformation of the group to the offset
445 } else {
446 ctrans = citem->transform;
447 }
448 } else {
449 ctrans = citem->transform * g;
450 }
451 }
453 // FIXME: constructing a transform that would fully preserve the appearance of a
454 // textpath if it is ungrouped with its path seems to be impossible in general
455 // case. E.g. if the group was squeezed, to keep the ungrouped textpath squeezed
456 // as well, we'll need to relink it to some "virtual" path which is inversely
457 // stretched relative to the actual path, and then squeeze the textpath back so it
458 // would both fit the actual path _and_ be squeezed as before. It's a bummer.
460 // This is just a way to temporarily remember the transform in repr. When repr is
461 // reattached outside of the group, the transform will be written more properly
462 // (i.e. optimized into the object if the corresponding preference is set)
463 gchar *affinestr=sp_svg_transform_write(ctrans);
464 nrepr->setAttribute("transform", affinestr);
465 g_free(affinestr);
467 items = g_slist_prepend (items, nrepr);
469 } else {
470 Inkscape::XML::Node *nrepr = SP_OBJECT_REPR (child)->duplicate(prepr->document());
471 objects = g_slist_prepend (objects, nrepr);
472 }
473 }
475 /* Step 2 - clear group */
476 // remember the position of the group
477 gint pos = SP_OBJECT_REPR(group)->position();
479 // the group is leaving forever, no heir, clones should take note; its children however are going to reemerge
480 SP_OBJECT (group)->deleteObject(true, false);
482 /* Step 3 - add nonitems */
483 if (objects) {
484 Inkscape::XML::Node *last_def = SP_OBJECT_REPR(defs)->lastChild();
485 while (objects) {
486 Inkscape::XML::Node *repr = (Inkscape::XML::Node *) objects->data;
487 if (!sp_repr_is_meta_element(repr))
488 SP_OBJECT_REPR(defs)->addChild(repr, last_def);
489 Inkscape::GC::release(repr);
490 objects = g_slist_remove (objects, objects->data);
491 }
492 }
494 /* Step 4 - add items */
495 while (items) {
496 Inkscape::XML::Node *repr = (Inkscape::XML::Node *) items->data;
497 // add item
498 prepr->appendChild(repr);
499 // restore position; since the items list was prepended (i.e. reverse), we now add
500 // all children at the same pos, which inverts the order once again
501 repr->setPosition(pos > 0 ? pos : 0);
503 // fill in the children list if non-null
504 SPItem *item = (SPItem *) doc->getObjectByRepr(repr);
506 sp_item_write_transform(item, repr, item->transform, NULL, false);
508 Inkscape::GC::release(repr);
509 if (children && SP_IS_ITEM (item))
510 *children = g_slist_prepend (*children, item);
512 items = g_slist_remove (items, items->data);
513 }
515 if (do_done)
516 sp_document_done (doc, SP_VERB_NONE, _("Ungroup"));
517 }
519 /*
520 * some API for list aspect of SPGroup
521 */
523 GSList *
524 sp_item_group_item_list (SPGroup * group)
525 {
526 g_return_val_if_fail (group != NULL, NULL);
527 g_return_val_if_fail (SP_IS_GROUP (group), NULL);
529 GSList *s = NULL;
531 for (SPObject *o = sp_object_first_child(SP_OBJECT(group)) ; o != NULL ; o = SP_OBJECT_NEXT(o) ) {
532 if (SP_IS_ITEM (o)) {
533 s = g_slist_prepend (s, o);
534 }
535 }
537 return g_slist_reverse (s);
538 }
540 SPObject *
541 sp_item_group_get_child_by_name (SPGroup *group, SPObject *ref, const gchar *name)
542 {
543 SPObject *child;
544 child = (ref) ? SP_OBJECT_NEXT(ref) : sp_object_first_child(SP_OBJECT(group));
545 while ( child && strcmp (SP_OBJECT_REPR(child)->name(), name) ) {
546 child = SP_OBJECT_NEXT(child);
547 }
548 return child;
549 }
551 void SPGroup::setLayerMode(LayerMode mode) {
552 if ( _layer_mode != mode ) {
553 if ( mode == LAYER ) {
554 sp_document_add_resource(SP_OBJECT_DOCUMENT(this), "layer", this);
555 } else {
556 sp_document_remove_resource(SP_OBJECT_DOCUMENT(this), "layer", this);
557 }
558 _layer_mode = mode;
559 _updateLayerMode();
560 }
561 }
563 SPGroup::LayerMode SPGroup::layerDisplayMode(unsigned int dkey) const {
564 std::map<unsigned int, LayerMode>::const_iterator iter;
565 iter = _display_modes.find(dkey);
566 if ( iter != _display_modes.end() ) {
567 return (*iter).second;
568 } else {
569 return GROUP;
570 }
571 }
573 void SPGroup::setLayerDisplayMode(unsigned int dkey, SPGroup::LayerMode mode) {
574 if ( layerDisplayMode(dkey) != mode ) {
575 _display_modes[dkey] = mode;
576 _updateLayerMode(dkey);
577 }
578 }
580 void SPGroup::_updateLayerMode(unsigned int display_key) {
581 SPItemView *view;
582 for ( view = this->display ; view ; view = view->next ) {
583 if ( !display_key || view->key == display_key ) {
584 NRArenaGroup *arena_group=NR_ARENA_GROUP(view->arenaitem);
585 if (arena_group) {
586 nr_arena_group_set_transparent(arena_group, effectiveLayerMode(view->key) == SPGroup::LAYER);
587 }
588 }
589 }
590 }
592 void SPGroup::translateChildItems(Geom::Translate const &tr)
593 {
594 if (this->hasChildren())
595 {
596 SPObject *o = NULL;
597 for (o = sp_object_first_child(SP_OBJECT(this)) ; o != NULL ; o = SP_OBJECT_NEXT(o) ) {
598 if (SP_IS_ITEM (o)) {
599 sp_item_move_rel(static_cast<SPItem *>(o), tr);
600 }
601 }
602 }
603 }
605 CGroup::CGroup(SPGroup *group) {
606 _group = group;
607 }
609 CGroup::~CGroup() {
610 }
612 void CGroup::onChildAdded(Inkscape::XML::Node *child) {
613 SPObject *last_child = _group->lastChild();
614 if (last_child && SP_OBJECT_REPR(last_child) == child) {
615 // optimization for the common special case where the child is being added at the end
616 SPObject *ochild = last_child;
617 if ( SP_IS_ITEM(ochild) ) {
618 /* TODO: this should be moved into SPItem somehow */
619 SPItemView *v;
620 NRArenaItem *ac;
622 for (v = _group->display; v != NULL; v = v->next) {
623 ac = sp_item_invoke_show (SP_ITEM (ochild), NR_ARENA_ITEM_ARENA (v->arenaitem), v->key, v->flags);
625 if (ac) {
626 nr_arena_item_append_child (v->arenaitem, ac);
627 }
628 }
629 }
630 } else { // general case
631 SPObject *ochild = sp_object_get_child_by_repr(_group, child);
632 if ( ochild && SP_IS_ITEM(ochild) ) {
633 /* TODO: this should be moved into SPItem somehow */
634 SPItemView *v;
635 NRArenaItem *ac;
637 unsigned position = sp_item_pos_in_parent(SP_ITEM(ochild));
639 for (v = _group->display; v != NULL; v = v->next) {
640 ac = sp_item_invoke_show (SP_ITEM (ochild), NR_ARENA_ITEM_ARENA (v->arenaitem), v->key, v->flags);
642 if (ac) {
643 nr_arena_item_add_child (v->arenaitem, ac, NULL);
644 nr_arena_item_set_order (ac, position);
645 }
646 }
647 }
648 }
650 _group->requestModified(SP_OBJECT_MODIFIED_FLAG);
651 }
653 void CGroup::onChildRemoved(Inkscape::XML::Node */*child*/) {
654 _group->requestModified(SP_OBJECT_MODIFIED_FLAG);
655 }
657 void CGroup::onUpdate(SPCtx *ctx, unsigned int flags) {
658 SPItemCtx *ictx, cctx;
660 ictx = (SPItemCtx *) ctx;
661 cctx = *ictx;
663 if (flags & SP_OBJECT_MODIFIED_FLAG) {
664 flags |= SP_OBJECT_PARENT_MODIFIED_FLAG;
665 }
667 flags &= SP_OBJECT_MODIFIED_CASCADE;
669 if (flags & SP_OBJECT_STYLE_MODIFIED_FLAG) {
670 SPObject *object = SP_OBJECT(_group);
671 for (SPItemView *v = SP_ITEM(_group)->display; v != NULL; v = v->next) {
672 nr_arena_group_set_style(NR_ARENA_GROUP(v->arenaitem), SP_OBJECT_STYLE(object));
673 }
674 }
676 GSList *l = g_slist_reverse(_group->childList(true, SPObject::ActionUpdate));
677 while (l) {
678 SPObject *child = SP_OBJECT (l->data);
679 l = g_slist_remove (l, child);
680 if (flags || (child->uflags & (SP_OBJECT_MODIFIED_FLAG | SP_OBJECT_CHILD_MODIFIED_FLAG))) {
681 if (SP_IS_ITEM (child)) {
682 SPItem const &chi = *SP_ITEM(child);
683 cctx.i2doc = chi.transform * ictx->i2doc;
684 cctx.i2vp = chi.transform * ictx->i2vp;
685 child->updateDisplay((SPCtx *)&cctx, flags);
686 } else {
687 child->updateDisplay(ctx, flags);
688 }
689 }
690 g_object_unref (G_OBJECT (child));
691 }
692 }
694 void CGroup::onModified(guint flags) {
695 SPObject *child;
697 if (flags & SP_OBJECT_MODIFIED_FLAG) flags |= SP_OBJECT_PARENT_MODIFIED_FLAG;
698 flags &= SP_OBJECT_MODIFIED_CASCADE;
700 if (flags & SP_OBJECT_STYLE_MODIFIED_FLAG) {
701 SPObject *object = SP_OBJECT(_group);
702 for (SPItemView *v = SP_ITEM(_group)->display; v != NULL; v = v->next) {
703 nr_arena_group_set_style(NR_ARENA_GROUP(v->arenaitem), SP_OBJECT_STYLE(object));
704 }
705 }
707 GSList *l = g_slist_reverse(_group->childList(true));
708 while (l) {
709 child = SP_OBJECT (l->data);
710 l = g_slist_remove (l, child);
711 if (flags || (child->mflags & (SP_OBJECT_MODIFIED_FLAG | SP_OBJECT_CHILD_MODIFIED_FLAG))) {
712 child->emitModified(flags);
713 }
714 g_object_unref (G_OBJECT (child));
715 }
716 }
718 void CGroup::calculateBBox(NRRect *bbox, Geom::Matrix const &transform, unsigned const flags) {
720 Geom::OptRect dummy_bbox;
722 GSList *l = _group->childList(false, SPObject::ActionBBox);
723 while (l) {
724 SPObject *o = SP_OBJECT (l->data);
725 if (SP_IS_ITEM(o) && !SP_ITEM(o)->isHidden()) {
726 SPItem *child = SP_ITEM(o);
727 Geom::Matrix const ct(to_2geom(child->transform) * transform);
728 sp_item_invoke_bbox_full(child, dummy_bbox, ct, flags, FALSE);
729 }
730 l = g_slist_remove (l, o);
731 }
733 *bbox = NRRect(dummy_bbox);
734 }
736 void CGroup::onPrint(SPPrintContext *ctx) {
737 GSList *l = g_slist_reverse(_group->childList(false));
738 while (l) {
739 SPObject *o = SP_OBJECT (l->data);
740 if (SP_IS_ITEM(o)) {
741 sp_item_invoke_print (SP_ITEM (o), ctx);
742 }
743 l = g_slist_remove (l, o);
744 }
745 }
747 gint CGroup::getItemCount() {
748 gint len = 0;
749 for (SPObject *o = sp_object_first_child(SP_OBJECT(_group)) ; o != NULL ; o = SP_OBJECT_NEXT(o) ) {
750 if (SP_IS_ITEM(o)) {
751 len++;
752 }
753 }
755 return len;
756 }
758 gchar *CGroup::getDescription() {
759 gint len = getItemCount();
760 return g_strdup_printf(
761 ngettext("<b>Group</b> of <b>%d</b> object",
762 "<b>Group</b> of <b>%d</b> objects",
763 len), len);
764 }
766 NRArenaItem *CGroup::show (NRArena *arena, unsigned int key, unsigned int flags) {
767 NRArenaItem *ai;
768 SPObject *object = SP_OBJECT(_group);
770 ai = NRArenaGroup::create(arena);
772 nr_arena_group_set_transparent(NR_ARENA_GROUP (ai),
773 _group->effectiveLayerMode(key) ==
774 SPGroup::LAYER);
775 nr_arena_group_set_style(NR_ARENA_GROUP(ai), SP_OBJECT_STYLE(object));
777 _showChildren(arena, ai, key, flags);
778 return ai;
779 }
781 void CGroup::_showChildren (NRArena *arena, NRArenaItem *ai, unsigned int key, unsigned int flags) {
782 NRArenaItem *ac = NULL;
783 NRArenaItem *ar = NULL;
784 SPItem * child = NULL;
785 GSList *l = g_slist_reverse(_group->childList(false, SPObject::ActionShow));
786 while (l) {
787 SPObject *o = SP_OBJECT (l->data);
788 if (SP_IS_ITEM (o)) {
789 child = SP_ITEM (o);
790 ac = sp_item_invoke_show (child, arena, key, flags);
791 if (ac) {
792 nr_arena_item_add_child (ai, ac, ar);
793 ar = ac;
794 }
795 }
796 l = g_slist_remove (l, o);
797 }
798 }
800 void CGroup::hide (unsigned int key) {
801 SPItem * child;
803 GSList *l = g_slist_reverse(_group->childList(false, SPObject::ActionShow));
804 while (l) {
805 SPObject *o = SP_OBJECT (l->data);
806 if (SP_IS_ITEM (o)) {
807 child = SP_ITEM (o);
808 sp_item_invoke_hide (child, key);
809 }
810 l = g_slist_remove (l, o);
811 }
813 if (((SPItemClass *) parent_class)->hide)
814 ((SPItemClass *) parent_class)->hide (_group, key);
815 }
817 void CGroup::onOrderChanged (Inkscape::XML::Node *child, Inkscape::XML::Node *, Inkscape::XML::Node *)
818 {
819 SPObject *ochild = sp_object_get_child_by_repr(_group, child);
820 if ( ochild && SP_IS_ITEM(ochild) ) {
821 /* TODO: this should be moved into SPItem somehow */
822 SPItemView *v;
823 unsigned position = sp_item_pos_in_parent(SP_ITEM(ochild));
824 for ( v = SP_ITEM (ochild)->display ; v != NULL ; v = v->next ) {
825 nr_arena_item_set_order (v->arenaitem, position);
826 }
827 }
829 _group->requestModified(SP_OBJECT_MODIFIED_FLAG);
830 }
832 static void
833 sp_group_update_patheffect (SPLPEItem *lpeitem, bool write)
834 {
835 #ifdef GROUP_VERBOSE
836 g_message("sp_group_update_patheffect: %p\n", lpeitem);
837 #endif
838 g_return_if_fail (lpeitem != NULL);
839 g_return_if_fail (SP_IS_GROUP (lpeitem));
841 GSList const *item_list = sp_item_group_item_list(SP_GROUP(lpeitem));
842 for ( GSList const *iter = item_list; iter; iter = iter->next ) {
843 SPObject *subitem = static_cast<SPObject *>(iter->data);
844 if (SP_IS_LPE_ITEM(subitem)) {
845 if (SP_LPE_ITEM_CLASS (G_OBJECT_GET_CLASS (subitem))->update_patheffect) {
846 SP_LPE_ITEM_CLASS (G_OBJECT_GET_CLASS (subitem))->update_patheffect (SP_LPE_ITEM(subitem), write);
847 }
848 }
849 }
851 if (sp_lpe_item_has_path_effect(lpeitem) && sp_lpe_item_path_effects_enabled(lpeitem)) {
852 for (PathEffectList::iterator it = lpeitem->path_effect_list->begin(); it != lpeitem->path_effect_list->end(); it++)
853 {
854 LivePathEffectObject *lpeobj = (*it)->lpeobject;
855 if (lpeobj && lpeobj->get_lpe()) {
856 lpeobj->get_lpe()->doBeforeEffect(lpeitem);
857 }
858 }
860 sp_group_perform_patheffect(SP_GROUP(lpeitem), SP_GROUP(lpeitem), write);
861 }
862 }
864 static void
865 sp_group_perform_patheffect(SPGroup *group, SPGroup *topgroup, bool write)
866 {
867 GSList const *item_list = sp_item_group_item_list(SP_GROUP(group));
868 for ( GSList const *iter = item_list; iter; iter = iter->next ) {
869 SPObject *subitem = static_cast<SPObject *>(iter->data);
870 if (SP_IS_GROUP(subitem)) {
871 sp_group_perform_patheffect(SP_GROUP(subitem), topgroup, write);
872 } else if (SP_IS_SHAPE(subitem)) {
873 SPCurve * c = NULL;
874 if (SP_IS_PATH(subitem)) {
875 c = sp_path_get_original_curve(SP_PATH(subitem));
876 } else {
877 c = sp_shape_get_curve(SP_SHAPE(subitem));
878 }
879 // only run LPEs when the shape has a curve defined
880 if (c) {
881 sp_lpe_item_perform_path_effect(SP_LPE_ITEM(topgroup), c);
882 sp_shape_set_curve(SP_SHAPE(subitem), c, TRUE);
884 if (write) {
885 Inkscape::XML::Node *repr = SP_OBJECT_REPR(subitem);
886 gchar *str = sp_svg_write_path(c->get_pathvector());
887 repr->setAttribute("d", str);
888 #ifdef GROUP_VERBOSE
889 g_message("sp_group_perform_patheffect writes 'd' attribute");
890 #endif
891 g_free(str);
892 }
894 c->unref();
895 }
896 }
897 }
898 }
900 /*
901 Local Variables:
902 mode:c++
903 c-file-style:"stroustrup"
904 c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
905 indent-tabs-mode:nil
906 fill-column:99
907 End:
908 */
909 // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4 :