Composite: Added stubbed class

src/Composite.cpp

@@ -0,0 +1,69 @@
+////////////////////////////////////////////////////////////////////////////////
+//
+// Copyright 2015 - 2016, Paul Beckingham, Federico Hernandez.
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included
+// in all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+// THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+// SOFTWARE.
+//
+// http://www.opensource.org/licenses/mit-license.php
+//
+////////////////////////////////////////////////////////////////////////////////
+
+#include <cmake.h>
+#include <Composite.h>
+
+////////////////////////////////////////////////////////////////////////////////
+// Initially assume no text, but infinite virtual space.
+//
+// Ållow overlay placement of arbitrary text at any offset, real or virtual, and
+// using a specific color. The color is blended with any underlying color.
+//
+// Collapse all the strings down to a single string, with the most efficient
+// color directives inline.
+//
+// For example:
+//   Composite c;
+//   c.add ("first",  2, Color ("red"));
+//   c.add ("second", 5, Color ("underline"));
+//
+// Result:
+//   "  firsecond"
+//      rrrrr
+//         uuuuuu
+//
+// The first part "fir" will be red.
+// The second part "se" will be red and underlined.
+// The third part "cond" will be underlined.
+//
+void Composite::add (
+  const std::string& text,
+  std::string::size_type offset,
+  const Color& color)
+{
+  _layers.push_back (std::make_tuple (text, offset, color));
+}
+
+////////////////////////////////////////////////////////////////////////////////
+// overlay == true    means there is no color blending.
+// overlay == false   means there is color blending.
+std::string Composite::str (bool overlay)
+{
+  return "";
+}
+
+////////////////////////////////////////////////////////////////////////////////