1 /* === S Y N F I G ========================================================= */
2 /*! \file valuenode_subtract.h
3 ** \brief Header file for implementation of the "Subtract" valuenode conversion.
8 ** Copyright (c) 2002-2005 Robert B. Quattlebaum Jr., Adrian Bentley
9 ** Copyright (c) 2007, 2008 Chris Moore
11 ** This package is free software; you can redistribute it and/or
12 ** modify it under the terms of the GNU General Public License as
13 ** published by the Free Software Foundation; either version 2 of
14 ** the License, or (at your option) any later version.
16 ** This package is distributed in the hope that it will be useful,
17 ** but WITHOUT ANY WARRANTY; without even the implied warranty of
18 ** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
19 ** General Public License for more details.
22 /* ========================================================================= */
24 /* === S T A R T =========================================================== */
26 #ifndef __SYNFIG_VALUENODE_SUBTRACT_H
27 #define __SYNFIG_VALUENODE_SUBTRACT_H
29 /* === H E A D E R S ======================================================= */
31 #include "valuenode.h"
33 /* === M A C R O S ========================================================= */
35 /* === C L A S S E S & S T R U C T S ======================================= */
39 struct ValueNode_Subtract : public LinkableValueNode
41 typedef etl::handle<ValueNode_Subtract> Handle;
42 typedef etl::handle<const ValueNode_Subtract> ConstHandle;
45 ValueNode_Subtract(const ValueBase &value);
48 ValueNode::RHandle ref_a;
49 ValueNode::RHandle ref_b;
50 ValueNode::RHandle scalar;
53 LinkableValueNode* create_new()const;
54 static ValueNode_Subtract* create(const ValueBase &value=ValueBase());
55 virtual ~ValueNode_Subtract();
56 virtual ValueBase operator()(Time t)const;
57 virtual bool set_link_vfunc(int i,ValueNode::Handle x);
58 virtual ValueNode::LooseHandle get_link_vfunc(int i)const;
59 virtual int link_count()const;
60 virtual String link_local_name(int i)const;
61 virtual String link_name(int i)const;
62 virtual int get_link_index_from_name(const String &name)const;
63 virtual String get_name()const;
64 virtual String get_local_name()const;
65 static bool check_type(ValueBase::Type type);
67 //! Gets the left-hand-side value_node
68 ValueNode::Handle get_lhs()const { return ref_a; }
70 //! Gets the right-hand-side value_node
71 ValueNode::Handle get_rhs()const { return ref_b; }
73 //! Gets the scalar value_node
74 ValueNode::Handle get_scalar()const { return scalar; }
76 }; // END of class ValueNode_Subtract
78 }; // END of namespace synfig
80 /* === E N D =============================================================== */