--- /dev/null
+/* === S Y N F I G ========================================================= */
+/*! \file transform.h
+** \brief Template Header
+**
+** $Id$
+**
+** \legal
+** Copyright (c) 2002-2005 Robert B. Quattlebaum Jr., Adrian Bentley
+**
+** 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_TRANSFORM_H
+#define __SYNFIG_TRANSFORM_H
+
+/* === H E A D E R S ======================================================= */
+
+#include <ETL/handle>
+#include "vector.h"
+#include <list>
+#include "rect.h"
+#include "guid.h"
+
+/* === M A C R O S ========================================================= */
+
+/* === T Y P E D E F S ===================================================== */
+
+/* === C L A S S E S & S T R U C T S ======================================= */
+
+namespace synfig {
+
+class Transform : public etl::shared_object
+{
+ GUID guid_;
+
+public:
+ typedef etl::handle<Transform> Handle;
+
+protected:
+ Transform(const GUID& guid=GUID(0)):guid_(guid) { }
+
+public:
+
+ const GUID& get_guid()const { return guid_; }
+
+ virtual ~Transform() { }
+ virtual synfig::Vector perform(const synfig::Vector& x)const=0;
+ virtual synfig::Vector unperform(const synfig::Vector& x)const=0;
+
+ virtual synfig::Rect perform(const synfig::Rect& x)const;
+ virtual synfig::Rect unperform(const synfig::Rect& x)const;
+
+}; // END of class Transform
+
+class TransformStack : public std::list<Transform::Handle>
+{
+public:
+ GUID get_guid()const;
+
+ synfig::Vector perform(const synfig::Vector& x)const;
+ synfig::Vector unperform(const synfig::Vector& x)const;
+
+ synfig::Rect perform(const synfig::Rect& x)const;
+ synfig::Rect unperform(const synfig::Rect& x)const;
+
+ void push(const Transform::Handle& x) { if(x)push_back(x); }
+ void pop() { pop_back(); }
+}; // END of class TransformStack
+
+}; // END of namespace synfig
+
+/* === E N D =============================================================== */
+
+#endif