/* === S Y N F I G ========================================================= */
/*! \file valuenode_subtract.h
** \brief Header file for implementation of the "Subtract" valuenode conversion.
**
** $Id$
**
** \legal
** Copyright (c) 2002-2005 Robert B. Quattlebaum Jr., Adrian Bentley
** Copyright (c) 2007, 2008 Chris Moore
**
** 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
*/
/* ========================================================================= */
/* === S T A R T =========================================================== */
#ifndef __SYNFIG_VALUENODE_SUBTRACT_H
#define __SYNFIG_VALUENODE_SUBTRACT_H
/* === H E A D E R S ======================================================= */
#include "valuenode.h"
/* === M A C R O S ========================================================= */
/* === C L A S S E S & S T R U C T S ======================================= */
namespace synfig {
struct ValueNode_Subtract : public LinkableValueNode
{
typedef etl::handle<ValueNode_Subtract> Handle;
typedef etl::handle<const ValueNode_Subtract> ConstHandle;
protected:
ValueNode_Subtract(const ValueBase &value);
private:
ValueNode::RHandle ref_a;
ValueNode::RHandle ref_b;
ValueNode::RHandle scalar;
public:
LinkableValueNode* create_new()const;
static ValueNode_Subtract* create(const ValueBase &value=ValueBase());
virtual ~ValueNode_Subtract();
virtual ValueBase operator()(Time t)const;
virtual bool set_link_vfunc(int i,ValueNode::Handle x);
virtual ValueNode::LooseHandle get_link_vfunc(int i)const;
virtual int link_count()const;
virtual String link_local_name(int i)const;
virtual String link_name(int i)const;
virtual int get_link_index_from_name(const String &name)const;
virtual String get_name()const;
virtual String get_local_name()const;
static bool check_type(ValueBase::Type type);
//! Gets the left-hand-side value_node
ValueNode::Handle get_lhs()const { return ref_a; }
//! Gets the right-hand-side value_node
ValueNode::Handle get_rhs()const { return ref_b; }
//! Gets the scalar value_node
ValueNode::Handle get_scalar()const { return scalar; }
}; // END of class ValueNode_Subtract
}; // END of namespace synfig
/* === E N D =============================================================== */
#endif