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, bool const target, SnapPointsWithType &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 ( flags & SP_OBJECT_WRITE_ALL ) {
262 value = "group";
263 } else {
264 value = NULL;
265 }
266 repr->setAttribute("inkscape:groupmode", value);
267 }
269 if (((SPObjectClass *) (parent_class))->write)
270 ((SPObjectClass *) (parent_class))->write (object, xml_doc, repr, flags);
272 return repr;
273 }
275 static void
276 sp_group_bbox(SPItem const *item, NRRect *bbox, Geom::Matrix const &transform, unsigned const flags)
277 {
278 SP_GROUP(item)->group->calculateBBox(bbox, transform, flags);
279 }
281 static void
282 sp_group_print (SPItem * item, SPPrintContext *ctx)
283 {
284 SP_GROUP(item)->group->onPrint(ctx);
285 }
287 static gchar * sp_group_description (SPItem * item)
288 {
289 return SP_GROUP(item)->group->getDescription();
290 }
292 static void sp_group_set(SPObject *object, unsigned key, char const *value) {
293 SPGroup *group = SP_GROUP(object);
295 switch (key) {
296 case SP_ATTR_INKSCAPE_GROUPMODE:
297 if ( value && !strcmp(value, "layer") ) {
298 group->setLayerMode(SPGroup::LAYER);
299 } else {
300 group->setLayerMode(SPGroup::GROUP);
301 }
302 break;
303 default: {
304 if (((SPObjectClass *) (parent_class))->set) {
305 (* ((SPObjectClass *) (parent_class))->set)(object, key, value);
306 }
307 }
308 }
309 }
311 static NRArenaItem *
312 sp_group_show (SPItem *item, NRArena *arena, unsigned int key, unsigned int flags)
313 {
314 return SP_GROUP(item)->group->show(arena, key, flags);
315 }
317 static void
318 sp_group_hide (SPItem *item, unsigned int key)
319 {
320 SP_GROUP(item)->group->hide(key);
321 }
323 static void sp_group_snappoints (SPItem const *item, bool const target, SnapPointsWithType &p, Inkscape::SnapPreferences const *snapprefs)
324 {
325 for (SPObject const *o = sp_object_first_child(SP_OBJECT(item));
326 o != NULL;
327 o = SP_OBJECT_NEXT(o))
328 {
329 if (SP_IS_ITEM(o)) {
330 sp_item_snappoints(SP_ITEM(o), target, p, snapprefs);
331 }
332 }
333 }
336 void
337 sp_item_group_ungroup (SPGroup *group, GSList **children, bool do_done)
338 {
339 g_return_if_fail (group != NULL);
340 g_return_if_fail (SP_IS_GROUP (group));
342 SPDocument *doc = SP_OBJECT_DOCUMENT (group);
343 SPObject *root = SP_DOCUMENT_ROOT (doc);
344 SPObject *defs = SP_OBJECT (SP_ROOT (root)->defs);
346 SPItem *gitem = SP_ITEM (group);
347 Inkscape::XML::Node *grepr = SP_OBJECT_REPR (gitem);
349 g_return_if_fail (!strcmp (grepr->name(), "svg:g") || !strcmp (grepr->name(), "svg:a") || !strcmp (grepr->name(), "svg:switch"));
351 // this converts the gradient/pattern fill/stroke on the group, if any, to userSpaceOnUse
352 sp_item_adjust_paint_recursive (gitem, Geom::identity(), Geom::identity(), false);
354 SPItem *pitem = SP_ITEM (SP_OBJECT_PARENT (gitem));
355 Inkscape::XML::Node *prepr = SP_OBJECT_REPR (pitem);
357 if (SP_IS_BOX3D(gitem)) {
358 group = box3d_convert_to_group(SP_BOX3D(gitem));
359 gitem = SP_ITEM(group);
360 }
362 sp_lpe_item_remove_all_path_effects(SP_LPE_ITEM(group), false);
364 /* Step 1 - generate lists of children objects */
365 GSList *items = NULL;
366 GSList *objects = NULL;
367 for (SPObject *child = sp_object_first_child(SP_OBJECT(group)) ; child != NULL; child = SP_OBJECT_NEXT(child) ) {
369 if (SP_IS_ITEM (child)) {
371 SPItem *citem = SP_ITEM (child);
373 /* Merging of style */
374 // this converts the gradient/pattern fill/stroke, if any, to userSpaceOnUse; we need to do
375 // it here _before_ the new transform is set, so as to use the pre-transform bbox
376 sp_item_adjust_paint_recursive (citem, Geom::identity(), Geom::identity(), false);
378 sp_style_merge_from_dying_parent(SP_OBJECT_STYLE(child), SP_OBJECT_STYLE(gitem));
379 /*
380 * fixme: We currently make no allowance for the case where child is cloned
381 * and the group has any style settings.
382 *
383 * (This should never occur with documents created solely with the current
384 * version of inkscape without using the XML editor: we usually apply group
385 * style changes to children rather than to the group itself.)
386 *
387 * If the group has no style settings, then
388 * sp_style_merge_from_dying_parent should be a no-op. Otherwise (i.e. if
389 * we change the child's style to compensate for its parent going away)
390 * then those changes will typically be reflected in any clones of child,
391 * whereas we'd prefer for Ungroup not to affect the visual appearance.
392 *
393 * The only way of preserving styling appearance in general is for child to
394 * be put into a new group -- a somewhat surprising response to an Ungroup
395 * command. We could add a new groupmode:transparent that would mostly
396 * hide the existence of such groups from the user (i.e. editing behaves as
397 * if the transparent group's children weren't in a group), though that's
398 * extra complication & maintenance burden and this case is rare.
399 */
401 child->updateRepr();
403 Inkscape::XML::Node *nrepr = SP_OBJECT_REPR (child)->duplicate(prepr->document());
405 // Merging transform
406 Geom::Matrix ctrans;
407 Geom::Matrix const g(gitem->transform);
408 if (SP_IS_USE(citem) && sp_use_get_original (SP_USE(citem)) &&
409 SP_OBJECT_PARENT (sp_use_get_original (SP_USE(citem))) == SP_OBJECT(group)) {
410 // make sure a clone's effective transform is the same as was under group
411 ctrans = g.inverse() * citem->transform * g;
412 } else {
413 // We should not apply the group's transformation to both a linked offset AND to its source
414 if (SP_IS_OFFSET(citem)) { // Do we have an offset at hand (whether it's dynamic or linked)?
415 SPItem *source = sp_offset_get_source(SP_OFFSET(citem));
416 // When dealing with a chain of linked offsets, the transformation of an offset will be
417 // tied to the transformation of the top-most source, not to any of the intermediate
418 // offsets. So let's find the top-most source
419 while (source != NULL && SP_IS_OFFSET(source)) {
420 source = sp_offset_get_source(SP_OFFSET(source));
421 }
422 if (source != NULL && // If true then we must be dealing with a linked offset ...
423 SP_OBJECT(group)->isAncestorOf(SP_OBJECT(source)) == false) { // ... of which the source is not in the same group
424 ctrans = citem->transform * g; // then we should apply the transformation of the group to the offset
425 } else {
426 ctrans = citem->transform;
427 }
428 } else {
429 ctrans = citem->transform * g;
430 }
431 }
433 // FIXME: constructing a transform that would fully preserve the appearance of a
434 // textpath if it is ungrouped with its path seems to be impossible in general
435 // case. E.g. if the group was squeezed, to keep the ungrouped textpath squeezed
436 // as well, we'll need to relink it to some "virtual" path which is inversely
437 // stretched relative to the actual path, and then squeeze the textpath back so it
438 // would both fit the actual path _and_ be squeezed as before. It's a bummer.
440 // This is just a way to temporarily remember the transform in repr. When repr is
441 // reattached outside of the group, the transform will be written more properly
442 // (i.e. optimized into the object if the corresponding preference is set)
443 gchar *affinestr=sp_svg_transform_write(ctrans);
444 nrepr->setAttribute("transform", affinestr);
445 g_free(affinestr);
447 items = g_slist_prepend (items, nrepr);
449 } else {
450 Inkscape::XML::Node *nrepr = SP_OBJECT_REPR (child)->duplicate(prepr->document());
451 objects = g_slist_prepend (objects, nrepr);
452 }
453 }
455 /* Step 2 - clear group */
456 // remember the position of the group
457 gint pos = SP_OBJECT_REPR(group)->position();
459 // the group is leaving forever, no heir, clones should take note; its children however are going to reemerge
460 SP_OBJECT (group)->deleteObject(true, false);
462 /* Step 3 - add nonitems */
463 if (objects) {
464 Inkscape::XML::Node *last_def = SP_OBJECT_REPR(defs)->lastChild();
465 while (objects) {
466 Inkscape::XML::Node *repr = (Inkscape::XML::Node *) objects->data;
467 if (!sp_repr_is_meta_element(repr))
468 SP_OBJECT_REPR(defs)->addChild(repr, last_def);
469 Inkscape::GC::release(repr);
470 objects = g_slist_remove (objects, objects->data);
471 }
472 }
474 /* Step 4 - add items */
475 while (items) {
476 Inkscape::XML::Node *repr = (Inkscape::XML::Node *) items->data;
477 // add item
478 prepr->appendChild(repr);
479 // restore position; since the items list was prepended (i.e. reverse), we now add
480 // all children at the same pos, which inverts the order once again
481 repr->setPosition(pos > 0 ? pos : 0);
483 // fill in the children list if non-null
484 SPItem *item = (SPItem *) doc->getObjectByRepr(repr);
486 sp_item_write_transform(item, repr, item->transform, NULL, false);
488 Inkscape::GC::release(repr);
489 if (children && SP_IS_ITEM (item))
490 *children = g_slist_prepend (*children, item);
492 items = g_slist_remove (items, items->data);
493 }
495 if (do_done)
496 sp_document_done (doc, SP_VERB_NONE, _("Ungroup"));
497 }
499 /*
500 * some API for list aspect of SPGroup
501 */
503 GSList *
504 sp_item_group_item_list (SPGroup * group)
505 {
506 g_return_val_if_fail (group != NULL, NULL);
507 g_return_val_if_fail (SP_IS_GROUP (group), NULL);
509 GSList *s = NULL;
511 for (SPObject *o = sp_object_first_child(SP_OBJECT(group)) ; o != NULL ; o = SP_OBJECT_NEXT(o) ) {
512 if (SP_IS_ITEM (o)) {
513 s = g_slist_prepend (s, o);
514 }
515 }
517 return g_slist_reverse (s);
518 }
520 SPObject *
521 sp_item_group_get_child_by_name (SPGroup *group, SPObject *ref, const gchar *name)
522 {
523 SPObject *child;
524 child = (ref) ? SP_OBJECT_NEXT(ref) : sp_object_first_child(SP_OBJECT(group));
525 while ( child && strcmp (SP_OBJECT_REPR(child)->name(), name) ) {
526 child = SP_OBJECT_NEXT(child);
527 }
528 return child;
529 }
531 void SPGroup::setLayerMode(LayerMode mode) {
532 if ( _layer_mode != mode ) {
533 if ( mode == LAYER ) {
534 sp_document_add_resource(SP_OBJECT_DOCUMENT(this), "layer", this);
535 } else {
536 sp_document_remove_resource(SP_OBJECT_DOCUMENT(this), "layer", this);
537 }
538 _layer_mode = mode;
539 _updateLayerMode();
540 }
541 }
543 SPGroup::LayerMode SPGroup::layerDisplayMode(unsigned int dkey) const {
544 std::map<unsigned int, LayerMode>::const_iterator iter;
545 iter = _display_modes.find(dkey);
546 if ( iter != _display_modes.end() ) {
547 return (*iter).second;
548 } else {
549 return GROUP;
550 }
551 }
553 void SPGroup::setLayerDisplayMode(unsigned int dkey, SPGroup::LayerMode mode) {
554 if ( layerDisplayMode(dkey) != mode ) {
555 _display_modes[dkey] = mode;
556 _updateLayerMode(dkey);
557 }
558 }
560 void SPGroup::_updateLayerMode(unsigned int display_key) {
561 SPItemView *view;
562 for ( view = this->display ; view ; view = view->next ) {
563 if ( !display_key || view->key == display_key ) {
564 NRArenaGroup *arena_group=NR_ARENA_GROUP(view->arenaitem);
565 if (arena_group) {
566 nr_arena_group_set_transparent(arena_group, effectiveLayerMode(view->key) == SPGroup::LAYER);
567 }
568 }
569 }
570 }
572 void SPGroup::translateChildItems(Geom::Translate const &tr)
573 {
574 if (this->hasChildren())
575 {
576 SPObject *o = NULL;
577 for (o = sp_object_first_child(SP_OBJECT(this)) ; o != NULL ; o = SP_OBJECT_NEXT(o) ) {
578 if (SP_IS_ITEM (o)) {
579 sp_item_move_rel(static_cast<SPItem *>(o), tr);
580 }
581 }
582 }
583 }
585 CGroup::CGroup(SPGroup *group) {
586 _group = group;
587 }
589 CGroup::~CGroup() {
590 }
592 void CGroup::onChildAdded(Inkscape::XML::Node *child) {
593 SPObject *last_child = _group->lastChild();
594 if (last_child && SP_OBJECT_REPR(last_child) == child) {
595 // optimization for the common special case where the child is being added at the end
596 SPObject *ochild = last_child;
597 if ( SP_IS_ITEM(ochild) ) {
598 /* TODO: this should be moved into SPItem somehow */
599 SPItemView *v;
600 NRArenaItem *ac;
602 for (v = _group->display; v != NULL; v = v->next) {
603 ac = sp_item_invoke_show (SP_ITEM (ochild), NR_ARENA_ITEM_ARENA (v->arenaitem), v->key, v->flags);
605 if (ac) {
606 nr_arena_item_append_child (v->arenaitem, ac);
607 }
608 }
609 }
610 } else { // general case
611 SPObject *ochild = sp_object_get_child_by_repr(_group, child);
612 if ( ochild && SP_IS_ITEM(ochild) ) {
613 /* TODO: this should be moved into SPItem somehow */
614 SPItemView *v;
615 NRArenaItem *ac;
617 unsigned position = sp_item_pos_in_parent(SP_ITEM(ochild));
619 for (v = _group->display; v != NULL; v = v->next) {
620 ac = sp_item_invoke_show (SP_ITEM (ochild), NR_ARENA_ITEM_ARENA (v->arenaitem), v->key, v->flags);
622 if (ac) {
623 nr_arena_item_add_child (v->arenaitem, ac, NULL);
624 nr_arena_item_set_order (ac, position);
625 }
626 }
627 }
628 }
630 _group->requestModified(SP_OBJECT_MODIFIED_FLAG);
631 }
633 void CGroup::onChildRemoved(Inkscape::XML::Node */*child*/) {
634 _group->requestModified(SP_OBJECT_MODIFIED_FLAG);
635 }
637 void CGroup::onUpdate(SPCtx *ctx, unsigned int flags) {
638 SPItemCtx *ictx, cctx;
640 ictx = (SPItemCtx *) ctx;
641 cctx = *ictx;
643 if (flags & SP_OBJECT_MODIFIED_FLAG) {
644 flags |= SP_OBJECT_PARENT_MODIFIED_FLAG;
645 }
647 flags &= SP_OBJECT_MODIFIED_CASCADE;
649 if (flags & SP_OBJECT_STYLE_MODIFIED_FLAG) {
650 SPObject *object = SP_OBJECT(_group);
651 for (SPItemView *v = SP_ITEM(_group)->display; v != NULL; v = v->next) {
652 nr_arena_group_set_style(NR_ARENA_GROUP(v->arenaitem), SP_OBJECT_STYLE(object));
653 }
654 }
656 GSList *l = g_slist_reverse(_group->childList(true, SPObject::ActionUpdate));
657 while (l) {
658 SPObject *child = SP_OBJECT (l->data);
659 l = g_slist_remove (l, child);
660 if (flags || (child->uflags & (SP_OBJECT_MODIFIED_FLAG | SP_OBJECT_CHILD_MODIFIED_FLAG))) {
661 if (SP_IS_ITEM (child)) {
662 SPItem const &chi = *SP_ITEM(child);
663 cctx.i2doc = chi.transform * ictx->i2doc;
664 cctx.i2vp = chi.transform * ictx->i2vp;
665 child->updateDisplay((SPCtx *)&cctx, flags);
666 } else {
667 child->updateDisplay(ctx, flags);
668 }
669 }
670 g_object_unref (G_OBJECT (child));
671 }
672 }
674 void CGroup::onModified(guint flags) {
675 SPObject *child;
677 if (flags & SP_OBJECT_MODIFIED_FLAG) flags |= SP_OBJECT_PARENT_MODIFIED_FLAG;
678 flags &= SP_OBJECT_MODIFIED_CASCADE;
680 if (flags & SP_OBJECT_STYLE_MODIFIED_FLAG) {
681 SPObject *object = SP_OBJECT(_group);
682 for (SPItemView *v = SP_ITEM(_group)->display; v != NULL; v = v->next) {
683 nr_arena_group_set_style(NR_ARENA_GROUP(v->arenaitem), SP_OBJECT_STYLE(object));
684 }
685 }
687 GSList *l = g_slist_reverse(_group->childList(true));
688 while (l) {
689 child = SP_OBJECT (l->data);
690 l = g_slist_remove (l, child);
691 if (flags || (child->mflags & (SP_OBJECT_MODIFIED_FLAG | SP_OBJECT_CHILD_MODIFIED_FLAG))) {
692 child->emitModified(flags);
693 }
694 g_object_unref (G_OBJECT (child));
695 }
696 }
698 void CGroup::calculateBBox(NRRect *bbox, Geom::Matrix const &transform, unsigned const flags) {
700 Geom::OptRect dummy_bbox;
702 GSList *l = _group->childList(false, SPObject::ActionBBox);
703 while (l) {
704 SPObject *o = SP_OBJECT (l->data);
705 if (SP_IS_ITEM(o) && !SP_ITEM(o)->isHidden()) {
706 SPItem *child = SP_ITEM(o);
707 Geom::Matrix const ct(to_2geom(child->transform) * transform);
708 sp_item_invoke_bbox_full(child, dummy_bbox, ct, flags, FALSE);
709 }
710 l = g_slist_remove (l, o);
711 }
713 *bbox = NRRect(dummy_bbox);
714 }
716 void CGroup::onPrint(SPPrintContext *ctx) {
717 GSList *l = g_slist_reverse(_group->childList(false));
718 while (l) {
719 SPObject *o = SP_OBJECT (l->data);
720 if (SP_IS_ITEM(o)) {
721 sp_item_invoke_print (SP_ITEM (o), ctx);
722 }
723 l = g_slist_remove (l, o);
724 }
725 }
727 gint CGroup::getItemCount() {
728 gint len = 0;
729 for (SPObject *o = sp_object_first_child(SP_OBJECT(_group)) ; o != NULL ; o = SP_OBJECT_NEXT(o) ) {
730 if (SP_IS_ITEM(o)) {
731 len++;
732 }
733 }
735 return len;
736 }
738 gchar *CGroup::getDescription() {
739 gint len = getItemCount();
740 return g_strdup_printf(
741 ngettext("<b>Group</b> of <b>%d</b> object",
742 "<b>Group</b> of <b>%d</b> objects",
743 len), len);
744 }
746 NRArenaItem *CGroup::show (NRArena *arena, unsigned int key, unsigned int flags) {
747 NRArenaItem *ai;
748 SPObject *object = SP_OBJECT(_group);
750 ai = NRArenaGroup::create(arena);
752 nr_arena_group_set_transparent(NR_ARENA_GROUP (ai),
753 _group->effectiveLayerMode(key) ==
754 SPGroup::LAYER);
755 nr_arena_group_set_style(NR_ARENA_GROUP(ai), SP_OBJECT_STYLE(object));
757 _showChildren(arena, ai, key, flags);
758 return ai;
759 }
761 void CGroup::_showChildren (NRArena *arena, NRArenaItem *ai, unsigned int key, unsigned int flags) {
762 NRArenaItem *ac = NULL;
763 NRArenaItem *ar = NULL;
764 SPItem * child = NULL;
765 GSList *l = g_slist_reverse(_group->childList(false, SPObject::ActionShow));
766 while (l) {
767 SPObject *o = SP_OBJECT (l->data);
768 if (SP_IS_ITEM (o)) {
769 child = SP_ITEM (o);
770 ac = sp_item_invoke_show (child, arena, key, flags);
771 if (ac) {
772 nr_arena_item_add_child (ai, ac, ar);
773 ar = ac;
774 }
775 }
776 l = g_slist_remove (l, o);
777 }
778 }
780 void CGroup::hide (unsigned int key) {
781 SPItem * child;
783 GSList *l = g_slist_reverse(_group->childList(false, SPObject::ActionShow));
784 while (l) {
785 SPObject *o = SP_OBJECT (l->data);
786 if (SP_IS_ITEM (o)) {
787 child = SP_ITEM (o);
788 sp_item_invoke_hide (child, key);
789 }
790 l = g_slist_remove (l, o);
791 }
793 if (((SPItemClass *) parent_class)->hide)
794 ((SPItemClass *) parent_class)->hide (_group, key);
795 }
797 void CGroup::onOrderChanged (Inkscape::XML::Node *child, Inkscape::XML::Node *, Inkscape::XML::Node *)
798 {
799 SPObject *ochild = sp_object_get_child_by_repr(_group, child);
800 if ( ochild && SP_IS_ITEM(ochild) ) {
801 /* TODO: this should be moved into SPItem somehow */
802 SPItemView *v;
803 unsigned position = sp_item_pos_in_parent(SP_ITEM(ochild));
804 for ( v = SP_ITEM (ochild)->display ; v != NULL ; v = v->next ) {
805 nr_arena_item_set_order (v->arenaitem, position);
806 }
807 }
809 _group->requestModified(SP_OBJECT_MODIFIED_FLAG);
810 }
812 static void
813 sp_group_update_patheffect (SPLPEItem *lpeitem, bool write)
814 {
815 #ifdef GROUP_VERBOSE
816 g_message("sp_group_update_patheffect: %p\n", lpeitem);
817 #endif
818 g_return_if_fail (lpeitem != NULL);
819 g_return_if_fail (SP_IS_GROUP (lpeitem));
821 GSList const *item_list = sp_item_group_item_list(SP_GROUP(lpeitem));
822 for ( GSList const *iter = item_list; iter; iter = iter->next ) {
823 SPObject *subitem = static_cast<SPObject *>(iter->data);
824 if (SP_IS_LPE_ITEM(subitem)) {
825 if (SP_LPE_ITEM_CLASS (G_OBJECT_GET_CLASS (subitem))->update_patheffect) {
826 SP_LPE_ITEM_CLASS (G_OBJECT_GET_CLASS (subitem))->update_patheffect (SP_LPE_ITEM(subitem), write);
827 }
828 }
829 }
831 if (sp_lpe_item_has_path_effect(lpeitem) && sp_lpe_item_path_effects_enabled(lpeitem)) {
832 for (PathEffectList::iterator it = lpeitem->path_effect_list->begin(); it != lpeitem->path_effect_list->end(); it++)
833 {
834 LivePathEffectObject *lpeobj = (*it)->lpeobject;
835 if (lpeobj && lpeobj->get_lpe()) {
836 lpeobj->get_lpe()->doBeforeEffect(lpeitem);
837 }
838 }
840 sp_group_perform_patheffect(SP_GROUP(lpeitem), SP_GROUP(lpeitem), write);
841 }
842 }
844 static void
845 sp_group_perform_patheffect(SPGroup *group, SPGroup *topgroup, bool write)
846 {
847 GSList const *item_list = sp_item_group_item_list(SP_GROUP(group));
848 for ( GSList const *iter = item_list; iter; iter = iter->next ) {
849 SPObject *subitem = static_cast<SPObject *>(iter->data);
850 if (SP_IS_GROUP(subitem)) {
851 sp_group_perform_patheffect(SP_GROUP(subitem), topgroup, write);
852 } else if (SP_IS_SHAPE(subitem)) {
853 SPCurve * c = NULL;
854 if (SP_IS_PATH(subitem)) {
855 c = sp_path_get_original_curve(SP_PATH(subitem));
856 } else {
857 c = sp_shape_get_curve(SP_SHAPE(subitem));
858 }
859 // only run LPEs when the shape has a curve defined
860 if (c) {
861 sp_lpe_item_perform_path_effect(SP_LPE_ITEM(topgroup), c);
862 sp_shape_set_curve(SP_SHAPE(subitem), c, TRUE);
864 if (write) {
865 Inkscape::XML::Node *repr = SP_OBJECT_REPR(subitem);
866 gchar *str = sp_svg_write_path(c->get_pathvector());
867 repr->setAttribute("d", str);
868 #ifdef GROUP_VERBOSE
869 g_message("sp_group_perform_patheffect writes 'd' attribute");
870 #endif
871 g_free(str);
872 }
874 c->unref();
875 }
876 }
877 }
878 }
880 /*
881 Local Variables:
882 mode:c++
883 c-file-style:"stroustrup"
884 c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
885 indent-tabs-mode:nil
886 fill-column:99
887 End:
888 */
889 // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4 :