Fwd: Cannot move duplicated object

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Hi Inkscape devs!

I am trying to create a duplicate of the selected object and move the new
copy to a different location.
Following is what I have come up with (browsing around other code), but I
am sure I am doing something wrong. There is no compilation or run time
error but the new object does not move although duplicate is created
correctly.
Appreciate your help.

void Array::applyPageGrid(Inkscape::Selection *selection)
> {
>     int xq = _scalar_grid_horizontal_qty.get_value_as_int();
>     double x = _scalar_grid_horizontal_amt.getValue("px");
>     double y = _scalar_grid_vertical.getValue("px");
> //selection->moveRelative(x, y);
> // Duplicate (taken from selection-chemistry.cpp)
>     SPDocument *doc = selection->document();
>     if(!doc)
>         return;
>     Inkscape::XML::Document* xml_doc = doc->getReprDoc();
>     std::vector<Inkscape::XML::Node*> reprs(selection->xmlNodes().begin(),
> selection->xmlNodes().end());
> //selection->clear();
> sort(reprs.begin(),reprs.end(),sp_repr_compare_position_bool);
> std::vector<Inkscape::XML::Node*> newsel;
>     std::vector<const gchar *> old_ids;
>     std::vector<const gchar *> new_ids;
>     Inkscape::Preferences *prefs = Inkscape::Preferences::get();
>     bool relink_clones =
> prefs->getBool("/options/relinkclonesonduplicate/value");
>     const bool fork_livepatheffects =
> prefs->getBool("/options/forklpeonduplicate/value", true);
>     for(std::vector<Inkscape::XML::Node*>::const_iterator
> i=reprs.begin();i!=reprs.end();++i){
>         Inkscape::XML::Node *old_repr = *i;
>         Inkscape::XML::Node *parent = old_repr->parent();
>         Inkscape::XML::Node *copy = old_repr->duplicate(xml_doc);
>         parent->appendChild(copy);
>         if (relink_clones) {
>             SPObject *old_obj = doc->getObjectByRepr(old_repr);
>             SPObject *new_obj = doc->getObjectByRepr(copy);
>             add_ids_recursive(old_ids, old_obj);
>             add_ids_recursive(new_ids, new_obj);
>         }
>         if (fork_livepatheffects) {
>             SPObject *new_obj = doc->getObjectByRepr(copy);
>             SPLPEItem *newLPEObj = dynamic_cast<SPLPEItem *>(new_obj);
>             if (newLPEObj) {
>                 newLPEObj->forkPathEffectsIfNecessary(1);
>             }
>         }
> * ((ObjectSet*)copy)->moveRelative(x, y);*
>         newsel.push_back(copy);
>         Inkscape::GC::release(copy);
>     }
>
>     DocumentUndo::done( selection->desktop()->getDocument() ,
> SP_VERB_DIALOG_ARRAY,
>                         _("Grid"));
> }


Thanks!

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<div dir=3D"ltr"><div class=3D"gmail_quote"><br><div dir=3D"ltr">Hi Inkscap=
e devs!<div><br></div><div>I am trying to create a duplicate of the selecte=
d object and move the new copy to a different location.</div><div>Following=
 is what I have come up with (browsing around other code), but I am sure I =
am doing something wrong. There is no compilation or run time error but the=
 new object does not move although duplicate is created correctly.</div><di=
v>Appreciate your help.</div><div><br></div><blockquote class=3D"gmail_quot=
e" style=3D"margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204)=
;padding-left:1ex"><font face=3D"monospace" size=3D"4">void Array::applyPag=
eGrid(Inkscape::Selection *selection)<br></font><font face=3D"monospace" si=
ze=3D"4">{<br></font><font face=3D"monospace" size=3D"4">=C2=A0 =C2=A0 int =
xq =3D _scalar_grid_horizontal_qty.get_value_as_int();<br></font><font face=
=3D"monospace" size=3D"4">=C2=A0 =C2=A0 double x =3D _scalar_grid_horizonta=
l_amt.getValue(&quot;px&quot;);<br></font><font face=3D"monospace" size=3D"=
4">=C2=A0 =C2=A0 double y =3D _scalar_grid_vertical.getValue(&quot;px&quot;=
);</font><font face=3D"monospace" size=3D"4"><br></font><font face=3D"monos=
pace" size=3D"4">	//selection-&gt;moveRelative(x, y);</font><font face=3D"m=
onospace" size=3D"4"><br></font><font face=3D"monospace" size=3D"4">	// Dup=
licate (taken from selection-chemistry.cpp)</font><font face=3D"monospace" =
size=3D"4"><br></font><font face=3D"monospace" size=3D"4">=C2=A0 =C2=A0 SPD=
ocument *doc =3D selection-&gt;document();</font><font face=3D"monospace" s=
ize=3D"4"><br></font><font face=3D"monospace" size=3D"4">=C2=A0 =C2=A0 if(!=
doc)<br></font><font face=3D"monospace" size=3D"4">=C2=A0 =C2=A0 =C2=A0 =C2=
=A0 return;</font><font face=3D"monospace" size=3D"4"><br></font><font face=
=3D"monospace" size=3D"4">=C2=A0 =C2=A0 Inkscape::XML::Document* xml_doc =
=3D doc-&gt;getReprDoc();</font><font face=3D"monospace" size=3D"4"><br></f=
ont><font face=3D"monospace" size=3D"4">=C2=A0 =C2=A0 std::vector&lt;Inksca=
pe::XML::Node*&gt; reprs(selection-&gt;xmlNodes().begin(), selection-&gt;xm=
lNodes().end());</font><font face=3D"monospace" size=3D"4"><br></font><font=
 face=3D"monospace" size=3D"4">	//selection-&gt;clear();</font><font face=
=3D"monospace" size=3D"4"><br></font><font face=3D"monospace" size=3D"4">	s=
ort(reprs.begin(),reprs.end(),sp_repr_compare_position_bool);<br></font><fo=
nt face=3D"monospace" size=3D"4">	std::vector&lt;Inkscape::XML::Node*&gt; n=
ewsel;</font><font face=3D"monospace" size=3D"4"><br></font><font face=3D"m=
onospace" size=3D"4">=C2=A0 =C2=A0 std::vector&lt;const gchar *&gt; old_ids=
;<br></font><font face=3D"monospace" size=3D"4">=C2=A0 =C2=A0 std::vector&l=
t;const gchar *&gt; new_ids;<br></font><font face=3D"monospace" size=3D"4">=
=C2=A0 =C2=A0 Inkscape::Preferences *prefs =3D Inkscape::Preferences::get()=
;<br></font><font face=3D"monospace" size=3D"4">=C2=A0 =C2=A0 bool relink_c=
lones =3D prefs-&gt;getBool(&quot;/options/relinkclonesonduplicate/value&qu=
ot;);<br></font><font face=3D"monospace" size=3D"4">=C2=A0 =C2=A0 const boo=
l fork_livepatheffects =3D prefs-&gt;getBool(&quot;/options/forklpeonduplic=
ate/value&quot;, true);</font><font face=3D"monospace" size=3D"4"><br></fon=
t><font face=3D"monospace" size=3D"4">=C2=A0 =C2=A0 for(std::vector&lt;Inks=
cape::XML::Node*&gt;::const_iterator i=3Dreprs.begin();i!=3Dreprs.end();++i=
){<br></font><font face=3D"monospace" size=3D"4">=C2=A0 =C2=A0 =C2=A0 =C2=
=A0 Inkscape::XML::Node *old_repr =3D *i;<br></font><font face=3D"monospace=
" size=3D"4">=C2=A0 =C2=A0 =C2=A0 =C2=A0 Inkscape::XML::Node *parent =3D ol=
d_repr-&gt;parent();<br></font><font face=3D"monospace" size=3D"4">=C2=A0 =
=C2=A0 =C2=A0 =C2=A0 Inkscape::XML::Node *copy =3D old_repr-&gt;duplicate(x=
ml_doc);</font><font face=3D"monospace" size=3D"4"><br></font><font face=3D=
"monospace" size=3D"4">=C2=A0 =C2=A0 =C2=A0 =C2=A0 parent-&gt;appendChild(c=
opy);</font><font face=3D"monospace" size=3D"4"><br></font><font face=3D"mo=
nospace" size=3D"4">=C2=A0 =C2=A0 =C2=A0 =C2=A0 if (relink_clones) {<br></f=
ont><font face=3D"monospace" size=3D"4">=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =
=C2=A0 SPObject *old_obj =3D doc-&gt;getObjectByRepr(old_repr);<br></font><=
font face=3D"monospace" size=3D"4">=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=
=A0 SPObject *new_obj =3D doc-&gt;getObjectByRepr(copy);<br></font><font fa=
ce=3D"monospace" size=3D"4">=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 add_i=
ds_recursive(old_ids, old_obj);<br></font><font face=3D"monospace" size=3D"=
4">=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 add_ids_recursive(new_ids, new=
_obj);<br></font><font face=3D"monospace" size=3D"4">=C2=A0 =C2=A0 =C2=A0 =
=C2=A0 }</font><font face=3D"monospace" size=3D"4"><br></font><font face=3D=
"monospace" size=3D"4">=C2=A0 =C2=A0 =C2=A0 =C2=A0 if (fork_livepatheffects=
) {<br></font><font face=3D"monospace" size=3D"4">=C2=A0 =C2=A0 =C2=A0 =C2=
=A0 =C2=A0 =C2=A0 SPObject *new_obj =3D doc-&gt;getObjectByRepr(copy);<br><=
/font><font face=3D"monospace" size=3D"4">=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=
=A0 =C2=A0 SPLPEItem *newLPEObj =3D dynamic_cast&lt;SPLPEItem *&gt;(new_obj=
);<br></font><font face=3D"monospace" size=3D"4">=C2=A0 =C2=A0 =C2=A0 =C2=
=A0 =C2=A0 =C2=A0 if (newLPEObj) {<br></font><font face=3D"monospace" size=
=3D"4">=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 newLPEObj-&g=
t;forkPathEffectsIfNecessary(1);<br></font><font face=3D"monospace" size=3D=
"4">=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 }<br></font><font face=3D"mon=
ospace" size=3D"4">=C2=A0 =C2=A0 =C2=A0 =C2=A0 }</font><font face=3D"monosp=
ace" size=3D"4"><br></font><font face=3D"monospace" size=3D"4"><b>		((Objec=
tSet*)copy)-&gt;moveRelative(x, y);</b></font><font face=3D"monospace" size=
=3D"4"><br></font><font face=3D"monospace" size=3D"4">=C2=A0 =C2=A0 =C2=A0 =
=C2=A0 newsel.push_back(copy);<br></font><font face=3D"monospace" size=3D"4=
">=C2=A0 =C2=A0 =C2=A0 =C2=A0 Inkscape::GC::release(copy);<br></font><font =
face=3D"monospace" size=3D"4">=C2=A0 =C2=A0 }</font><font face=3D"monospace=
" size=3D"4"><br></font><font face=3D"monospace" size=3D"4"><br></font><fon=
t face=3D"monospace" size=3D"4">=C2=A0 =C2=A0 DocumentUndo::done( selection=
-&gt;desktop()-&gt;getDocument() , SP_VERB_DIALOG_ARRAY,<br></font><font fa=
ce=3D"monospace" size=3D"4">=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=
=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 _(&quot;Grid&quot;));<br></font><fon=
t face=3D"monospace" size=3D"4">}</font></blockquote><div><br></div><div>Th=
anks!</div><div><br></div></div>
</div></div>

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