Code Salvage

- Integrated some code from the (soon to be obsolete) 2.0.0 branch,
  which is general in nature and will be needed.
- And the corresponding unit tests.

src/Rectangle.h

@@ -0,0 +1,54 @@
+////////////////////////////////////////////////////////////////////////////////
+// taskwarrior - a command line task list manager.
+//
+// Copyright 2006 - 2010, Paul Beckingham, Federico Hernandez.
+// All rights reserved.
+//
+// This program 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 program 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.
+//
+// You should have received a copy of the GNU General Public License along with
+// this program; if not, write to the
+//
+//     Free Software Foundation, Inc.,
+//     51 Franklin Street, Fifth Floor,
+//     Boston, MA
+//     02110-1301
+//     USA
+//
+////////////////////////////////////////////////////////////////////////////////
+#ifndef INCLUDED_RECTANGLE
+#define INCLUDED_RECTANGLE
+
+class Rectangle
+{
+public:
+  Rectangle ();
+  Rectangle (int, int, int, int);
+  Rectangle (const Rectangle&);
+  Rectangle& operator= (const Rectangle&);
+
+  bool operator== (const Rectangle&) const;
+  bool operator!= (const Rectangle&) const;
+  bool intersects (const Rectangle&) const;
+  bool contains   (const Rectangle&) const;
+  bool adjacentTo (const Rectangle&) const;
+
+public:
+  int left;
+  int top;
+  int width;
+  int height;
+};
+
+#endif
+
+////////////////////////////////////////////////////////////////////////////////
+