+/* === S Y N F I G ========================================================= */
+/*! \file valuenode_compare.cpp
+** \brief Implementation of the "Compare" valuenode conversion.
+**
+** $Id$
+**
+** \legal
+** Copyright (c) 2002-2005 Robert B. Quattlebaum Jr., Adrian Bentley
+** Copyright (c) 2007, 2008 Chris Moore
+** Copyright (c) 2009 Nikita Kitaev
+**
+** This package is free software; you can redistribute it and/or
+** modify it under the terms of the GNU General Public License as
+** published by the Free Software Foundation; either version 2 of
+** the License, or (at your option) any later version.
+**
+** This package is distributed in the hope that it will be useful,
+** but WITHOUT ANY WARRANTY; without even the implied warranty of
+** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+** General Public License for more details.
+** \endlegal
+*/
+/* ========================================================================= */
+
+/* === H E A D E R S ======================================================= */
+
+#ifdef USING_PCH
+# include "pch.h"
+#else
+#ifdef HAVE_CONFIG_H
+# include <config.h>
+#endif
+
+#include "valuenode_compare.h"
+#include "valuenode_const.h"
+#include "general.h"
+
+#endif
+
+/* === U S I N G =========================================================== */
+
+using namespace std;
+using namespace etl;
+using namespace synfig;
+
+/* === M A C R O S ========================================================= */
+
+/* === G L O B A L S ======================================================= */
+
+/* === P R O C E D U R E S ================================================= */
+
+/* === M E T H O D S ======================================================= */
+
+ValueNode_Compare::ValueNode_Compare(const ValueBase &x):
+ LinkableValueNode(x.get_type())
+{
+ bool value(x.get(bool()));
+
+ set_link("lhs", ValueNode_Const::create(Real(0)));
+ set_link("rhs", ValueNode_Const::create(Real(0)));
+ set_link("greater", ValueNode_Const::create(bool(false)));
+ if (value)
+ set_link("equal",ValueNode_Const::create(bool(true)));
+ else
+ set_link("equal",ValueNode_Const::create(bool(false)));
+ set_link("less", ValueNode_Const::create(bool(false)));
+}
+
+ValueNode_Compare*
+ValueNode_Compare::create(const ValueBase &x)
+{
+ return new ValueNode_Compare(x);
+}
+
+LinkableValueNode*
+ValueNode_Compare::create_new()const
+{
+ return new ValueNode_Compare(get_type());
+}
+
+ValueNode_Compare::~ValueNode_Compare()
+{
+ unlink_all();
+}
+
+bool
+ValueNode_Compare::set_link_vfunc(int i,ValueNode::Handle value)
+{
+ assert(i>=0 && i<link_count());
+
+ switch(i)
+ {
+ case 0: CHECK_TYPE_AND_SET_VALUE(lhs_, ValueBase::TYPE_REAL);
+ case 1: CHECK_TYPE_AND_SET_VALUE(rhs_, ValueBase::TYPE_REAL);
+ case 2: CHECK_TYPE_AND_SET_VALUE(greater_, ValueBase::TYPE_BOOL);
+ case 3: CHECK_TYPE_AND_SET_VALUE(equal_, ValueBase::TYPE_BOOL);
+ case 4: CHECK_TYPE_AND_SET_VALUE(less_, ValueBase::TYPE_BOOL);
+ }
+ return false;
+}
+
+ValueNode::LooseHandle
+ValueNode_Compare::get_link_vfunc(int i)const
+{
+ assert(i>=0 && i<link_count());
+
+ if(i==0) return lhs_;
+ if(i==1) return rhs_;
+ if(i==2) return greater_;
+ if(i==3) return equal_;
+ if(i==4) return less_;
+ return 0;
+}
+
+int
+ValueNode_Compare::link_count()const
+{
+ return 5;
+}
+
+String
+ValueNode_Compare::link_local_name(int i)const
+{
+ assert(i>=0 && i<link_count());
+
+ if(i==0) return _("LHS");
+ if(i==1) return _("RHS");
+ if(i==2) return _("Greater Than");
+ if(i==3) return _("Equal to");
+ if(i==4) return _("Less Than");
+ return String();
+}
+
+String
+ValueNode_Compare::link_name(int i)const
+{
+ assert(i>=0 && i<link_count());
+
+ if(i==0) return "lhs";
+ if(i==1) return "rhs";
+ if(i==2) return "greater";
+ if(i==3) return "equal";
+ if(i==4) return "less";
+ return String();
+}
+
+int
+ValueNode_Compare::get_link_index_from_name(const String &name)const
+{
+ if(name=="lhs") return 0;
+ if(name=="rhs") return 1;
+ if(name=="greater") return 2;
+ if(name=="equal") return 3;
+ if(name=="less") return 4;
+
+ throw Exception::BadLinkName(name);
+}
+
+ValueBase
+ValueNode_Compare::operator()(Time t)const
+{
+ if (getenv("SYNFIG_DEBUG_VALUENODE_OPERATORS"))
+ printf("%s:%d operator()\n", __FILE__, __LINE__);
+
+ Real lhs = (*lhs_) (t).get(Real());
+ Real rhs = (*rhs_) (t).get(Real());
+ Real greater = (*greater_) (t).get(bool());
+ Real equal = (*equal_) (t).get(bool());
+ Real less = (*less_) (t).get(bool());
+
+ if (greater && lhs > rhs)
+ return true;
+ if (equal && lhs == rhs)
+ return true;
+ if (less && lhs < rhs)
+ return true;
+
+ return false;
+}
+
+String
+ValueNode_Compare::get_name()const
+{
+ return "compare";
+}
+
+String
+ValueNode_Compare::get_local_name()const
+{
+ return _("Compare");
+}
+
+bool
+ValueNode_Compare::check_type(ValueBase::Type type)
+{
+ return type==ValueBase::TYPE_BOOL;
+}