/**
* This function will create a new tspan element with the same attributes as
* the tref had and add the same text as a child. The tref is replaced in the
* tree with the new tspan.
* The code is based partially on sp_use_unlink
*/
SPObject *
sp_tref_convert_to_tspan(SPObject *obj)
{
SPObject * new_tspan = NULL;
////////////////////
// BASE CASE
////////////////////
if (SP_IS_TREF(obj)) {
SPTRef *tref = SP_TREF(obj);
if (tref && tref->stringChild) {
Inkscape::XML::Node *tref_repr = tref->getRepr();
Inkscape::XML::Node *tref_parent = tref_repr->parent();
SPDocument *document = tref->document;
Inkscape::XML::Document *xml_doc = document->getReprDoc();
Inkscape::XML::Node *new_tspan_repr = xml_doc->createElement("svg:tspan");
// Add the new tspan element just after the current tref
tref_parent->addChild(new_tspan_repr, tref_repr);
Inkscape::GC::release(new_tspan_repr);
new_tspan = document->getObjectByRepr(new_tspan_repr);
// Create a new string child for the tspan
Inkscape::XML::Node *new_string_repr = tref->stringChild->getRepr()->duplicate(xml_doc);
new_tspan_repr->addChild(new_string_repr, NULL);
//SPObject * new_string_child = document->getObjectByRepr(new_string_repr);
// Merge style from the tref
SPStyle *new_tspan_sty = new_tspan->style;
SPStyle const *tref_sty = tref->style;
sp_style_merge_from_dying_parent(new_tspan_sty, tref_sty);
sp_style_merge_from_parent(new_tspan_sty, new_tspan->parent->style);
new_tspan->updateRepr();
// Hold onto our SPObject and repr for now.
sp_object_ref(tref, NULL);
Inkscape::GC::anchor(tref_repr);
// Remove ourselves, not propagating delete events to avoid a
// chain-reaction with other elements that might reference us.
tref->deleteObject(false);
// Give the copy our old id and let go of our old repr.
new_tspan_repr->setAttribute("id", tref_repr->attribute("id"));
Inkscape::GC::release(tref_repr);
// Establish the succession and let go of our object.
tref->setSuccessor(new_tspan);
sp_object_unref(tref, NULL);
}
}
////////////////////
// RECURSIVE CASE
////////////////////
else {
GSList *l = NULL;
for (SPObject *child = obj->firstChild() ; child != NULL ; child = child->getNext() ) {
sp_object_ref(child, obj);
l = g_slist_prepend (l, child);
}
l = g_slist_reverse (l);
while (l) {
SPObject *child = reinterpret_cast<SPObject *>(l->data); // We just built this list, so cast is safe.
l = g_slist_remove (l, child);
// Note that there may be more than one conversion happening here, so if it's not a
// tref being passed into this function, the returned value can't be specifically known
new_tspan = sp_tref_convert_to_tspan(child);
sp_object_unref(child, obj);
}
}
return new_tspan;
}
SPItem *SPUse::unlink() {
Inkscape::XML::Node *repr = this->getRepr();
if (!repr) {
return NULL;
}
Inkscape::XML::Node *parent = repr->parent();
SPDocument *document = this->document;
Inkscape::XML::Document *xml_doc = document->getReprDoc();
// Track the ultimate source of a chain of uses.
SPItem *orig = this->root();
if (!orig) {
return NULL;
}
// Calculate the accumulated transform, starting from the original.
Geom::Affine t = this->get_root_transform();
Inkscape::XML::Node *copy = NULL;
if (SP_IS_SYMBOL(orig)) { // make a group, copy children
copy = xml_doc->createElement("svg:g");
for (Inkscape::XML::Node *child = orig->getRepr()->firstChild() ; child != NULL; child = child->next()) {
Inkscape::XML::Node *newchild = child->duplicate(xml_doc);
copy->appendChild(newchild);
}
} else { // just copy
copy = orig->getRepr()->duplicate(xml_doc);
}
// Add the duplicate repr just after the existing one.
parent->addChild(copy, repr);
// Retrieve the SPItem of the resulting repr.
SPObject *unlinked = document->getObjectByRepr(copy);
// Merge style from the use.
SPStyle *unli_sty = unlinked->style;
SPStyle const *use_sty = this->style;
sp_style_merge_from_dying_parent(unli_sty, use_sty);
sp_style_merge_from_parent(unli_sty, unlinked->parent->style);
unlinked->updateRepr();
// Hold onto our SPObject and repr for now.
sp_object_ref(this, NULL);
Inkscape::GC::anchor(repr);
// Remove ourselves, not propagating delete events to avoid a
// chain-reaction with other elements that might reference us.
this->deleteObject(false);
// Give the copy our old id and let go of our old repr.
copy->setAttribute("id", repr->attribute("id"));
Inkscape::GC::release(repr);
// Remove tiled clone attrs.
copy->setAttribute("inkscape:tiled-clone-of", NULL);
copy->setAttribute("inkscape:tile-w", NULL);
copy->setAttribute("inkscape:tile-h", NULL);
copy->setAttribute("inkscape:tile-cx", NULL);
copy->setAttribute("inkscape:tile-cy", NULL);
// Establish the succession and let go of our object.
this->setSuccessor(unlinked);
sp_object_unref(this, NULL);
SPItem *item = SP_ITEM(unlinked);
// Set the accummulated transform.
{
Geom::Affine nomove(Geom::identity());
// Advertise ourselves as not moving.
item->doWriteTransform(item->getRepr(), t, &nomove);
}
return item;
}
