static fz_obj *
resolvedest(pdf_xref *xref, fz_obj *dest)
{
if (fz_isname(dest) || fz_isstring(dest))
{
dest = pdf_lookupdest(xref, dest);
return resolvedest(xref, dest);
}
else if (fz_isarray(dest))
{
return dest; /* cf. http://code.google.com/p/sumatrapdf/issues/detail?id=275 */
}
else if (fz_isdict(dest))
{
dest = fz_dictgets(dest, "D");
return resolvedest(xref, dest);
}
else if (fz_isindirect(dest))
return dest;
return nil;
}
static fz_obj *
resolvedest(pdf_xref *xref, fz_obj *dest)
{
if (fz_isname(dest) || fz_isstring(dest))
{
dest = pdf_lookupdest(xref, dest);
return resolvedest(xref, dest);
}
else if (fz_isarray(dest))
{
return fz_arrayget(dest, 0);
}
else if (fz_isdict(dest))
{
dest = fz_dictgets(dest, "D");
return resolvedest(xref, dest);
}
else if (fz_isindirect(dest))
return dest;
return nil;
}
static fz_obj *
resolvedest(pdf_xref *xref, fz_obj *dest)
{
if (fz_isname(dest))
{
dest = fz_dictget(xref->dests, dest);
if (dest)
pdf_resolve(&dest, xref); /* XXX */
return resolvedest(xref, dest);
}
else if (fz_isstring(dest))
{
dest = fz_dictget(xref->dests, dest);
if (dest)
pdf_resolve(&dest, xref); /* XXX */
return resolvedest(xref, dest);
}
else if (fz_isarray(dest))
{
return fz_arrayget(dest, 0);
}
else if (fz_isdict(dest))
{
dest = fz_dictgets(dest, "D");
return resolvedest(xref, dest);
}
else if (fz_isindirect(dest))
return dest;
return nil;
}
pdf_link *
pdf_loadlink(pdf_xref *xref, fz_obj *dict)
{
fz_obj *dest;
fz_obj *action;
fz_obj *obj;
fz_rect bbox;
pdf_linkkind kind;
pdf_logpage("load link {\n");
dest = nil;
obj = fz_dictgets(dict, "Rect");
if (obj)
{
bbox = pdf_torect(obj);
pdf_logpage("rect [%g %g %g %g]\n",
bbox.x0, bbox.y0,
bbox.x1, bbox.y1);
}
else
bbox = fz_emptyrect;
obj = fz_dictgets(dict, "Dest");
if (obj)
{
kind = PDF_LGOTO;
dest = resolvedest(xref, obj);
pdf_logpage("dest (%d %d R)\n", fz_tonum(dest), fz_togen(dest));
}
action = fz_dictgets(dict, "A");
if (action)
{
obj = fz_dictgets(action, "S");
if (fz_isname(obj) && !strcmp(fz_toname(obj), "GoTo"))
{
kind = PDF_LGOTO;
dest = resolvedest(xref, fz_dictgets(action, "D"));
pdf_logpage("action goto (%d %d R)\n", fz_tonum(dest), fz_togen(dest));
}
else if (fz_isname(obj) && !strcmp(fz_toname(obj), "URI"))
{
kind = PDF_LURI;
dest = fz_dictgets(action, "URI");
pdf_logpage("action uri %s\n", fz_tostrbuf(dest));
}
/* cf. http://code.google.com/p/sumatrapdf/issues/detail?id=726 */
else if (fz_isname(obj) && !strcmp(fz_toname(obj), "Launch"))
{
kind = PDF_LLAUNCH;
dest = fz_dictgets(action, "F");
pdf_logpage("action launch (%d %d R)\n", fz_tonum(dest), fz_togen(dest));
}
else
{
pdf_logpage("unhandled link action, ignoring link\n");
dest = nil;
}
}
pdf_logpage("}\n");
if (dest)
{
return pdf_newlink(kind, bbox, dest);
}
return nil;
}
fz_error
pdf_loadlink(pdf_link **linkp, pdf_xref *xref, fz_obj *dict)
{
fz_error error;
pdf_link *link;
fz_obj *dest;
fz_obj *action;
fz_obj *obj;
fz_rect bbox;
pdf_linkkind kind;
pdf_logpage("load link {\n");
link = nil;
dest = nil;
obj = fz_dictgets(dict, "Rect");
if (obj)
{
bbox = pdf_torect(obj);
pdf_logpage("rect [%g %g %g %g]\n",
bbox.x0, bbox.y0,
bbox.x1, bbox.y1);
}
else
bbox = fz_emptyrect;
obj = fz_dictgets(dict, "Dest");
if (obj)
{
kind = PDF_LGOTO;
dest = resolvedest(xref, obj);
pdf_logpage("dest (%d %d R)\n", fz_tonum(dest), fz_togen(dest));
}
action = fz_dictgets(dict, "A");
if (action)
{
obj = fz_dictgets(action, "S");
if (fz_isname(obj) && !strcmp(fz_toname(obj), "GoTo"))
{
kind = PDF_LGOTO;
dest = resolvedest(xref, fz_dictgets(action, "D"));
pdf_logpage("action goto (%d %d R)\n", fz_tonum(dest), fz_togen(dest));
}
else if (fz_isname(obj) && !strcmp(fz_toname(obj), "URI"))
{
kind = PDF_LURI;
dest = fz_dictgets(action, "URI");
pdf_logpage("action uri %s\n", fz_tostrbuf(dest));
}
else
{
pdf_logpage("unhandled link action, ignoring link\n");
dest = nil;
}
}
pdf_logpage("}\n");
if (dest)
{
error = pdf_newlink(&link, kind, bbox, dest);
if (error)
return fz_rethrow(error, "cannot create link");
*linkp = link;
}
return fz_okay;
}
fz_error *
pdf_loadlink(pdf_link **linkp, pdf_xref *xref, fz_obj *dict)
{
fz_error *error;
pdf_link *link;
fz_obj *dest;
fz_obj *action;
fz_obj *obj;
fz_rect bbox;
pdf_linkkind kind;
pdf_logpage("load link {\n");
link = nil;
dest = nil;
obj = fz_dictgets(dict, "Rect");
if (obj)
{
bbox = pdf_torect(obj);
pdf_logpage("rect [%g %g %g %g]\n",
bbox.x0, bbox.y0,
bbox.x1, bbox.y1);
}
else
bbox = fz_emptyrect;
obj = fz_dictgets(dict, "Dest");
if (obj)
{
error = pdf_resolve(&obj, xref);
if (error)
return error;
dest = resolvedest(xref, obj);
pdf_logpage("dest %d %d R\n", fz_tonum(dest), fz_togen(dest));
fz_dropobj(obj);
}
kind = PDF_LUNKNOWN;
action = fz_dictgets(dict, "A");
if (action)
{
error = pdf_resolve(&action, xref);
if (error)
return error;
obj = fz_dictgets(action, "S");
if (!strcmp(fz_toname(obj), "GoTo"))
{
kind = PDF_LGOTO;
dest = resolvedest(xref, fz_dictgets(action, "D"));
pdf_logpage("action goto %d %d R\n", fz_tonum(dest), fz_togen(dest));
}
else if (!strcmp(fz_toname(obj), "URI"))
{
kind = PDF_LURI;
dest = fz_dictgets(action, "URI");
pdf_logpage("action uri %s\n", fz_tostrbuf(dest));
}
else
pdf_logpage("action ... ?\n");
fz_dropobj(action);
}
pdf_logpage("}\n");
if (dest)
{
error = pdf_newlink(&link, bbox, dest, kind);
if (error)
return error;
*linkp = link;
}
return nil;
}
