Move classes derived from SPObject to own directory.

A lot of header clean-up.

1 files changed, 0 insertions, 761 deletions

diff --git a/src/sp-use.cpp b/src/sp-use.cpp
deleted file mode 100644
index 0af7c7ebc..000000000
--- a/src/sp-use.cpp
+++ /dev/null
@@ -1,761 +0,0 @@
-/*
- * SVG <use> implementation
- *
- * Authors:
- *   Lauris Kaplinski <lauris@kaplinski.com>
- *   bulia byak <buliabyak@users.sf.net>
- *   Jon A. Cruz <jon@joncruz.org>
- *   Abhishek Sharma
- *
- * Copyright (C) 1999-2005 authors
- * Copyright (C) 2000-2001 Ximian, Inc.
- *
- * Released under GNU GPL, read the file 'COPYING' for more information
- */
-
-#include <cstring>
-#include <string>
-
-#include <2geom/transforms.h>
-#include <glibmm/i18n.h>
-#include <glibmm/markup.h>
-
-#include "bad-uri-exception.h"
-#include "display/drawing-group.h"
-#include "attributes.h"
-#include "document.h"
-#include "sp-clippath.h"
-#include "sp-mask.h"
-#include "sp-factory.h"
-#include "sp-flowregion.h"
-#include "uri.h"
-#include "print.h"
-#include "xml/repr.h"
-#include "svg/svg.h"
-#include "preferences.h"
-#include "style.h"
-#include "sp-symbol.h"
-#include "sp-root.h"
-#include "sp-use-reference.h"
-#include "sp-shape.h"
-#include "sp-text.h"
-#include "sp-flowtext.h"
-
-SPUse::SPUse()
-    : SPItem(),
-      SPDimensions(),
-      child(NULL),
-      href(NULL),
-      ref(new SPUseReference(this)),
-      _delete_connection(),
-      _changed_connection(),
-      _transformed_connection()
-{
-    this->x.unset();
-    this->y.unset();
-    this->width.unset(SVGLength::PERCENT, 1.0, 1.0);
-    this->height.unset(SVGLength::PERCENT, 1.0, 1.0);
-
-    this->_changed_connection = this->ref->changedSignal().connect(
-        sigc::hide(sigc::hide(sigc::mem_fun(this, &SPUse::href_changed)))
-    );
-}
-
-SPUse::~SPUse() {
-    if (this->child) {
-        this->detach(this->child);
-        this->child = NULL;
-    }
-
-    this->ref->detach();
-    delete this->ref;
-    this->ref = 0;
-}
-
-void SPUse::build(SPDocument *document, Inkscape::XML::Node *repr) {
-    SPItem::build(document, repr);
-
-    this->readAttr( "x" );
-    this->readAttr( "y" );
-    this->readAttr( "width" );
-    this->readAttr( "height" );
-    this->readAttr( "xlink:href" );
-
-    // We don't need to create child here:
-    // reading xlink:href will attach ref, and that will cause the changed signal to be emitted,
-    // which will call SPUse::href_changed, and that will take care of the child
-}
-
-void SPUse::release() {
-    if (this->child) {
-        this->detach(this->child);
-        this->child = NULL;
-    }
-
-    this->_delete_connection.disconnect();
-    this->_changed_connection.disconnect();
-    this->_transformed_connection.disconnect();
-
-    g_free(this->href);
-    this->href = NULL;
-
-    this->ref->detach();
-
-    SPItem::release();
-}
-
-void SPUse::set(unsigned int key, const gchar* value) {
-    switch (key) {
-        case SP_ATTR_X:
-            this->x.readOrUnset(value);
-            this->requestDisplayUpdate(SP_OBJECT_MODIFIED_FLAG);
-            break;
-
-        case SP_ATTR_Y:
-            this->y.readOrUnset(value);
-            this->requestDisplayUpdate(SP_OBJECT_MODIFIED_FLAG);
-            break;
-
-        case SP_ATTR_WIDTH:
-            this->width.readOrUnset(value, SVGLength::PERCENT, 1.0, 1.0);
-            this->requestDisplayUpdate(SP_OBJECT_MODIFIED_FLAG);
-            break;
-
-        case SP_ATTR_HEIGHT:
-            this->height.readOrUnset(value, SVGLength::PERCENT, 1.0, 1.0);
-            this->requestDisplayUpdate(SP_OBJECT_MODIFIED_FLAG);
-            break;
-
-        case SP_ATTR_XLINK_HREF: {
-            if ( value && this->href && ( strcmp(value, this->href) == 0 ) ) {
-                /* No change, do nothing. */
-            } else {
-                g_free(this->href);
-                this->href = NULL;
-
-                if (value) {
-                    // First, set the href field, because SPUse::href_changed will need it.
-                    this->href = g_strdup(value);
-
-                    // Now do the attaching, which emits the changed signal.
-                    try {
-                        this->ref->attach(Inkscape::URI(value));
-                    } catch (Inkscape::BadURIException &e) {
-                        g_warning("%s", e.what());
-                        this->ref->detach();
-                    }
-                } else {
-                    this->ref->detach();
-                }
-            }
-            break;
-        }
-
-        default:
-            SPItem::set(key, value);
-            break;
-    }
-}
-
-Inkscape::XML::Node* SPUse::write(Inkscape::XML::Document *xml_doc, Inkscape::XML::Node *repr, guint flags) {
-    if ((flags & SP_OBJECT_WRITE_BUILD) && !repr) {
-        repr = xml_doc->createElement("svg:use");
-    }
-
-    SPItem::write(xml_doc, repr, flags);
-
-    sp_repr_set_svg_double(repr, "x", this->x.computed);
-    sp_repr_set_svg_double(repr, "y", this->y.computed);
-    repr->setAttribute("width", sp_svg_length_write_with_units(this->width).c_str());
-    repr->setAttribute("height", sp_svg_length_write_with_units(this->height).c_str());
-
-    if (this->ref->getURI()) {
-        gchar *uri_string = this->ref->getURI()->toString();
-        repr->setAttribute("xlink:href", uri_string);
-        g_free(uri_string);
-    }
-
-    SPShape *shape = dynamic_cast<SPShape *>(child);
-    if (shape) {
-        shape->set_shape(); // evaluate SPCurve of child
-    } else {
-        SPText *text = dynamic_cast<SPText *>(child);
-        if (text) {
-            text->rebuildLayout(); // refresh Layout, LP Bug 1339305
-        } else {
-            SPFlowtext *flowtext = dynamic_cast<SPFlowtext *>(child);
-            if (flowtext) {
-                SPFlowregion *flowregion = dynamic_cast<SPFlowregion *>(flowtext->firstChild());
-                if (flowregion) {
-                    flowregion->UpdateComputed();
-                }
-                flowtext->rebuildLayout();
-            }
-        }
-    }
-
-    return repr;
-}
-
-Geom::OptRect SPUse::bbox(Geom::Affine const &transform, SPItem::BBoxType bboxtype) const {
-    Geom::OptRect bbox;
-
-    if (this->child) {
-        Geom::Affine const ct(child->transform * Geom::Translate(this->x.computed, this->y.computed) * transform );
-
-        bbox = child->bounds(bboxtype, ct);
-    }
-
-    return bbox;
-}
-
-void SPUse::print(SPPrintContext* ctx) {
-    bool translated = false;
-
-    if ((this->x._set && this->x.computed != 0) || (this->y._set && this->y.computed != 0)) {
-        Geom::Affine tp(Geom::Translate(this->x.computed, this->y.computed));
-        sp_print_bind(ctx, tp, 1.0);
-        translated = true;
-    }
-
-    if (this->child) {
-        this->child->invoke_print(ctx);
-    }
-
-    if (translated) {
-        sp_print_release(ctx);
-    }
-}
-
-const char* SPUse::displayName() const {
-    if (dynamic_cast<SPSymbol *>(child)) {
-        return _("Symbol");
-    } else {
-        return _("Clone");
-    }
-}
-
-gchar* SPUse::description() const {
-    if (child) {
-        if ( dynamic_cast<SPSymbol *>(child) ) {
-            if (child->title()) {
-                return g_strdup_printf(_("called %s"), Glib::Markup::escape_text(Glib::ustring( g_dpgettext2(NULL, "Symbol", child->title()))).c_str());
-            } else if (child->getAttribute("id")) {
-                return g_strdup_printf(_("called %s"), Glib::Markup::escape_text(Glib::ustring( g_dpgettext2(NULL, "Symbol", child->getAttribute("id")))).c_str());
-            } else {
-                return g_strdup_printf(_("called %s"), _("Unnamed Symbol"));
-            }
-        }
-
-        static unsigned recursion_depth = 0;
-
-        if (recursion_depth >= 4) {
-            /* TRANSLATORS: Used for statusbar description for long <use> chains:
-             * "Clone of: Clone of: ... in Layer 1". */
-            return g_strdup(_("..."));
-            /* We could do better, e.g. chasing the href chain until we reach something other than
-             * a <use>, and giving its description. */
-        }
-
-        ++recursion_depth;
-        char *child_desc = this->child->detailedDescription();
-        --recursion_depth;
-
-        char *ret = g_strdup_printf(_("of: %s"), child_desc);
-        g_free(child_desc);
-
-        return ret;
-    } else {
-        return g_strdup(_("[orphaned]"));
-    }
-}
-
-Inkscape::DrawingItem* SPUse::show(Inkscape::Drawing &drawing, unsigned int key, unsigned int flags) {
-
-    // std::cout << "SPUse::show: " << (getId()?getId():"null") << std::endl;
-    Inkscape::DrawingGroup *ai = new Inkscape::DrawingGroup(drawing);
-    ai->setPickChildren(false);
-    this->context_style = this->style;
-    ai->setStyle(this->style, this->context_style);
-    
-    if (this->child) {
-        Inkscape::DrawingItem *ac = this->child->invoke_show(drawing, key, flags);
-
-        if (ac) {
-            ai->prependChild(ac);
-        }
-
-        Geom::Translate t(this->x.computed, this->y.computed);
-        ai->setChildTransform(t);
-    }
-
-    return ai;
-}
-
-void SPUse::hide(unsigned int key) {
-    if (this->child) {
-        this->child->invoke_hide(key);
-    }
-
-//  SPItem::onHide(key);
-}
-
-
-/**
- * Returns the ultimate original of a SPUse (i.e. the first object in the chain of its originals
- * which is not an SPUse). If no original is found, NULL is returned (it is the responsibility
- * of the caller to make sure that this is handled correctly).
- *
- * Note that the returned is the clone object, i.e. the child of an SPUse (of the argument one for
- * the trivial case) and not the "true original".
- */
-SPItem *SPUse::root() {
-    SPItem *orig = this->child;
-
-    SPUse *use = dynamic_cast<SPUse *>(orig);
-    while (orig && use) {
-        orig = use->child;
-        use = dynamic_cast<SPUse *>(orig);
-    }
-
-    return orig;
-}
-
-SPItem const *SPUse::root() const {
-	return const_cast<SPUse*>(this)->root();
-}
-
-/**
- * Get the number of dereferences or calls to get_original() needed to get an object
- * which is not an svg:use. Returns -1 if there is no original object.
- */
-int SPUse::cloneDepth() const {
-    unsigned depth = 1;
-    SPItem *orig = this->child;
-
-    while (orig && dynamic_cast<SPUse *>(orig)) {
-        ++depth;
-        orig = dynamic_cast<SPUse *>(orig)->child;
-    }
-
-    if (!orig) {
-        return -1;
-    } else {
-        return depth;
-    }
-}
-
-/**
- * Returns the effective transform that goes from the ultimate original to given SPUse, both ends
- * included.
- */
-Geom::Affine SPUse::get_root_transform() {
-    //track the ultimate source of a chain of uses
-    SPObject *orig = this->child;
-
-    std::vector<SPItem*> chain;
-    chain.push_back(this);
-
-    while (dynamic_cast<SPUse *>(orig)) {
-        chain.push_back(dynamic_cast<SPItem *>(orig));
-        orig = dynamic_cast<SPUse *>(orig)->child;
-    }
-
-    chain.push_back(dynamic_cast<SPItem *>(orig));
-
-    // calculate the accummulated transform, starting from the original
-    Geom::Affine t(Geom::identity());
-
-    for (auto i=chain.rbegin(); i!=chain.rend(); ++i) {
-        SPItem *i_tem = *i;
-
-        // "An additional transformation translate(x,y) is appended to the end (i.e.,
-        // right-side) of the transform attribute on the generated 'g', where x and y
-        // represent the values of the x and y attributes on the 'use' element." - http://www.w3.org/TR/SVG11/struct.html#UseElement
-        SPUse *i_use = dynamic_cast<SPUse *>(i_tem);
-        if (i_use) {
-            if ((i_use->x._set && i_use->x.computed != 0) || (i_use->y._set && i_use->y.computed != 0)) {
-                t = t * Geom::Translate(i_use->x._set ? i_use->x.computed : 0, i_use->y._set ? i_use->y.computed : 0);
-            }
-        }
-
-        t *= i_tem->transform;
-    }
-    return t;
-}
-
-/**
- * Returns the transform that leads to the use from its immediate original.
- * Does not include the original's transform if any.
- */
-Geom::Affine SPUse::get_parent_transform() {
-    Geom::Affine t(Geom::identity());
-
-    if ((this->x._set && this->x.computed != 0) || (this->y._set && this->y.computed != 0)) {
-        t *= Geom::Translate(this->x._set ? this->x.computed : 0, this->y._set ? this->y.computed : 0);
-    }
-
-    t *= this->transform;
-    return t;
-}
-
-/**
- * Sensing a movement of the original, this function attempts to compensate for it in such a way
- * that the clone stays unmoved or moves in parallel (depending on user setting) regardless of the
- * clone's transform.
- */
-void SPUse::move_compensate(Geom::Affine const *mp) {
-    // the clone is orphaned; or this is not a real use, but a clone of another use;
-    // we skip it, otherwise duplicate compensation will occur
-    if (this->cloned) {
-        return;
-    }
-
-    // never compensate uses which are used in flowtext
-    if (parent && dynamic_cast<SPFlowregion *>(parent)) {
-        return;
-    }
-
-    Inkscape::Preferences *prefs = Inkscape::Preferences::get();
-    guint mode = prefs->getInt("/options/clonecompensation/value", SP_CLONE_COMPENSATION_PARALLEL);
-    // user wants no compensation
-    if (mode == SP_CLONE_COMPENSATION_NONE)
-        return;
-
-    Geom::Affine m(*mp);
-    Geom::Affine t = this->get_parent_transform();
-    Geom::Affine clone_move = t.inverse() * m * t;
-
-    // this is not a simple move, do not try to compensate
-    if (!(m.isTranslation())){
-    	//BUT move clippaths accordingly.
-        //if clone has a clippath, move it accordingly
-        if(clip_ref->getObject()){
-            for(auto& clip: clip_ref->getObject()->children){
-            	SPItem *item = (SPItem*) &clip;
-            	if(item){
-                    item->transform *= m;
-                    Geom::Affine identity;
-                    item->doWriteTransform(item->transform, &identity);
-            	}
-            }
-        }
-        if(mask_ref->getObject()){
-            for(auto& mask: mask_ref->getObject()->children){
-            	SPItem *item = (SPItem*) &mask;
-            	if(item){
-                    item->transform *= m;
-                    Geom::Affine identity;
-                    item->doWriteTransform(item->transform, &identity);
-            	}
-            }
-        }
-        return;
-    }
-
-    // restore item->transform field from the repr, in case it was changed by seltrans
-    this->readAttr ("transform");
-
-
-    // calculate the compensation matrix and the advertized movement matrix
-    Geom::Affine advertized_move;
-    if (mode == SP_CLONE_COMPENSATION_PARALLEL) {
-        clone_move = clone_move.inverse() * m;
-        advertized_move = m;
-    } else if (mode == SP_CLONE_COMPENSATION_UNMOVED) {
-        clone_move = clone_move.inverse();
-        advertized_move.setIdentity();
-    } else {
-        g_assert_not_reached();
-    }
-
-    //if clone has a clippath, move it accordingly
-    if(clip_ref->getObject()){
-        for(auto& clip: clip_ref->getObject()->children){
-        	SPItem *item = (SPItem*) &clip;
-        	if(item){
-                item->transform *= clone_move.inverse();
-                Geom::Affine identity;
-                item->doWriteTransform(item->transform, &identity);
-        	}
-        }
-    }
-    if(mask_ref->getObject()){
-        for(auto& mask: mask_ref->getObject()->children){
-        	SPItem *item = (SPItem*) &mask;
-        	if(item){
-                item->transform *= clone_move.inverse();
-                Geom::Affine identity;
-                item->doWriteTransform(item->transform, &identity);
-        	}
-        }
-    }
-
-
-    // commit the compensation
-    this->transform *= clone_move;
-    this->doWriteTransform(this->transform, &advertized_move);
-    this->requestDisplayUpdate(SP_OBJECT_MODIFIED_FLAG);
-}
-
-void SPUse::href_changed() {
-    this->_delete_connection.disconnect();
-    this->_transformed_connection.disconnect();
-
-    if (this->child) {
-        this->detach(this->child);
-        this->child = NULL;
-    }
-
-    if (this->href) {
-        SPItem *refobj = this->ref->getObject();
-
-        if (refobj) {
-            Inkscape::XML::Node *childrepr = refobj->getRepr();
-
-            SPObject* obj = SPFactory::createObject(NodeTraits::get_type_string(*childrepr));
-
-            SPItem *item = dynamic_cast<SPItem *>(obj);
-            if (item) {
-                child = item;
-
-                this->attach(this->child, this->lastChild());
-                sp_object_unref(this->child, this);
-
-                this->child->invoke_build(this->document, childrepr, TRUE);
-
-                for (SPItemView *v = this->display; v != NULL; v = v->next) {
-                    Inkscape::DrawingItem *ai = this->child->invoke_show(v->arenaitem->drawing(), v->key, v->flags);
-
-                    if (ai) {
-                        v->arenaitem->prependChild(ai);
-                    }
-                }
-            } else {
-                delete obj;
-                g_warning("Tried to create svg:use from invalid object");
-            }
-
-            this->_delete_connection = refobj->connectDelete(
-                sigc::hide(sigc::mem_fun(this, &SPUse::delete_self))
-            );
-
-            this->_transformed_connection = refobj->connectTransformed(
-                sigc::hide(sigc::mem_fun(this, &SPUse::move_compensate))
-            );
-        }
-    }
-}
-
-void SPUse::delete_self() {
-    // always delete uses which are used in flowtext
-    if (parent && dynamic_cast<SPFlowregion *>(parent)) {
-        deleteObject();
-        return;
-    }
-
-    Inkscape::Preferences *prefs = Inkscape::Preferences::get();
-    guint const mode = prefs->getInt("/options/cloneorphans/value",
-                                               SP_CLONE_ORPHANS_UNLINK);
-
-    if (mode == SP_CLONE_ORPHANS_UNLINK) {
-        this->unlink();
-    } else if (mode == SP_CLONE_ORPHANS_DELETE) {
-        this->deleteObject();
-    }
-}
-
-void SPUse::update(SPCtx *ctx, unsigned flags) {
-    // std::cout << "SPUse::update: " << (getId()?getId():"null") << std::endl;
-    SPItemCtx *ictx = (SPItemCtx *) ctx;
-    SPItemCtx cctx = *ictx;
-
-    unsigned childflags = flags;
-    if (flags & SP_OBJECT_MODIFIED_FLAG) {
-        childflags |= SP_OBJECT_PARENT_MODIFIED_FLAG;
-    }
-
-    childflags &= SP_OBJECT_MODIFIED_CASCADE;
-
-    /* Set up child viewport */
-    this->calcDimsFromParentViewport(ictx);
-
-    childflags &= ~SP_OBJECT_USER_MODIFIED_FLAG_B;
-
-    if (this->child) {
-        sp_object_ref(this->child);
-
-        // viewport is only changed if referencing a symbol or svg element
-        if( SP_IS_SYMBOL(this->child) || SP_IS_ROOT(this->child) ) {
-            cctx.viewport = Geom::Rect::from_xywh(0, 0, this->width.computed, this->height.computed);
-            cctx.i2vp = Geom::identity();
-        }
-        
-        if (childflags || (this->child->uflags & (SP_OBJECT_MODIFIED_FLAG | SP_OBJECT_CHILD_MODIFIED_FLAG))) {
-            SPItem const *chi = dynamic_cast<SPItem const *>(child);
-            g_assert(chi != NULL);
-            cctx.i2doc = chi->transform * ictx->i2doc;
-            cctx.i2vp = chi->transform * ictx->i2vp;
-            this->child->updateDisplay((SPCtx *)&cctx, childflags);
-        }
-
-        sp_object_unref(this->child);
-    }
-
-    SPItem::update(ctx, flags);
-
-    if (flags & SP_OBJECT_STYLE_MODIFIED_FLAG) {
-        for (SPItemView *v = this->display; v != NULL; v = v->next) {
-            Inkscape::DrawingGroup *g = dynamic_cast<Inkscape::DrawingGroup *>(v->arenaitem);
-            this->context_style = this->style;
-            g->setStyle(this->style, this->context_style);
-        }
-    }
-
-    /* As last step set additional transform of arena group */
-    for (SPItemView *v = this->display; v != NULL; v = v->next) {
-        Inkscape::DrawingGroup *g = dynamic_cast<Inkscape::DrawingGroup *>(v->arenaitem);
-        Geom::Affine t(Geom::Translate(this->x.computed, this->y.computed));
-        g->setChildTransform(t);
-    }
-}
-
-void SPUse::modified(unsigned int flags) {
-    // std::cout << "SPUse::modified: " << (getId()?getId():"null") << std::endl;
-    if (flags & SP_OBJECT_MODIFIED_FLAG) {
-        flags |= SP_OBJECT_PARENT_MODIFIED_FLAG;
-    }
-
-    flags &= SP_OBJECT_MODIFIED_CASCADE;
-
-    if (flags & SP_OBJECT_STYLE_MODIFIED_FLAG) {
-      for (SPItemView *v = this->display; v != NULL; v = v->next) {
-        Inkscape::DrawingGroup *g = dynamic_cast<Inkscape::DrawingGroup *>(v->arenaitem);
-        this->context_style = this->style;
-        g->setStyle(this->style, this->context_style);
-      }
-    }
-
-    if (child) {
-        sp_object_ref(child);
-
-        if (flags || (child->mflags & (SP_OBJECT_MODIFIED_FLAG | SP_OBJECT_CHILD_MODIFIED_FLAG))) {
-            child->emitModified(flags);
-        }
-
-        sp_object_unref(child);
-    }
-}
-
-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 (dynamic_cast<SPSymbol *>(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.
-    unlinked->style->merge( this->style );
-    unlinked->style->cascade( 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 = dynamic_cast<SPItem *>(unlinked);
-    g_assert(item != NULL);
-
-    // Set the accummulated transform.
-    {
-        Geom::Affine nomove(Geom::identity());
-        // Advertise ourselves as not moving.
-        item->doWriteTransform(t, &nomove);
-    }
-
-    return item;
-}
-
-SPItem *SPUse::get_original() {
-    SPItem *ref = NULL;
-
-        if (this->ref){
-            ref = this->ref->getObject();
-        }
-
-    return ref;
-}
-
-void SPUse::snappoints(std::vector<Inkscape::SnapCandidatePoint> &p, Inkscape::SnapPreferences const *snapprefs) const {
-    SPItem const *root = this->root();
-
-    if (!root) {
-        return;
-    }
-
-    root->snappoints(p, snapprefs);
-}
-
-
-/*
-  Local Variables:
-  mode:c++
-  c-file-style:"stroustrup"
-  c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
-  indent-tabs-mode:nil
-  fill-column:99
-  End:
-*/
-// vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4 :