Include a stripped-down version of FLTK in tree and add a USE_INCLUDED_FLTK option to build against it.


git-svn-id: svn://svn.code.sf.net/p/tigervnc/code/trunk@4603 3789f03b-4d11-0410-bbf8-ca57d06f2519
diff --git a/common/fltk/src/Fl_compose.cxx b/common/fltk/src/Fl_compose.cxx
new file mode 100644
index 0000000..fe72c22
--- /dev/null
+++ b/common/fltk/src/Fl_compose.cxx
@@ -0,0 +1,102 @@
+//
+// "$Id: Fl_compose.cxx 8626 2011-04-27 11:21:57Z manolo $"
+//
+// Character compose processing for the Fast Light Tool Kit (FLTK).
+//
+// Copyright 1998-2010 by Bill Spitzak and others.
+//
+// This library is free software; you can redistribute it and/or
+// modify it under the terms of the GNU Library General Public
+// License as published by the Free Software Foundation; either
+// version 2 of the License, or (at your option) any later version.
+//
+// This library 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
+// Library General Public License for more details.
+//
+// You should have received a copy of the GNU Library General Public
+// License along with this library; if not, write to the Free Software
+// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
+// USA.
+//
+// Please report all bugs and problems on the following page:
+//
+//     http://www.fltk.org/str.php
+//
+
+#include <FL/Fl.H>
+#include <FL/x.H>
+
+#ifndef FL_DOXYGEN
+int Fl::compose_state = 0;
+#endif
+
+#if !defined(WIN32) && !defined(__APPLE__)
+extern XIC fl_xim_ic;
+#endif
+
+/** Any text editing widget should call this for each FL_KEYBOARD event.
+ Use of this function is very simple.
+ 
+ <p>If <i>true</i> is returned, then it has modified the
+ Fl::event_text() and Fl::event_length() to a set of <i>bytes</i> to
+ insert (it may be of zero length!).  In will also set the "del"
+ parameter to the number of <i>bytes</i> to the left of the cursor to
+ delete, this is used to delete the results of the previous call to
+ Fl::compose().
+ 
+ <p>If <i>false</i> is returned, the keys should be treated as function
+ keys, and del is set to zero. You could insert the text anyways, if
+ you don't know what else to do.
+ 
+ <p>Though the current implementation returns immediately, future
+ versions may take quite awhile, as they may pop up a window or do
+ other user-interface things to allow characters to be selected.
+ */
+int Fl::compose(int& del) {
+  // character composition is now handled by the OS
+  del = 0;
+#if defined(__APPLE__)
+  // this stuff is to be treated as a function key
+  if(Fl::e_length == 0 || Fl::e_keysym == FL_Enter || Fl::e_keysym == FL_KP_Enter || 
+     Fl::e_keysym == FL_Tab || Fl::e_keysym == FL_Escape || Fl::e_state&(FL_META | FL_CTRL) ) {
+    return 0;
+  }
+#elif defined(WIN32)
+  unsigned char ascii = (unsigned)e_text[0];
+  if ((e_state & (FL_ALT | FL_META)) && !(ascii & 128)) return 0;
+#else
+  unsigned char ascii = (unsigned)e_text[0];
+  if ((e_state & (FL_ALT | FL_META | FL_CTRL)) && !(ascii & 128)) return 0;
+#endif
+  if(Fl::compose_state) {
+    del = Fl::compose_state;
+    Fl::compose_state = 0;
+#ifndef __APPLE__
+  } else {
+    // Only insert non-control characters:
+    if (! (ascii & ~31 && ascii!=127)) { return 0; }
+#endif
+  }
+  return 1;
+}
+
+/**
+ If the user moves the cursor, be sure to call Fl::compose_reset().
+ The next call to Fl::compose() will start out in an initial state. In
+ particular it will not set "del" to non-zero. This call is very fast
+ so it is ok to call it many times and in many places.
+ */
+void Fl::compose_reset()
+{
+  Fl::compose_state = 0;
+#if !defined(WIN32) && !defined(__APPLE__)
+  if (fl_xim_ic) XmbResetIC(fl_xim_ic);
+#endif
+}
+
+//
+// End of "$Id: Fl_compose.cxx 8626 2011-04-27 11:21:57Z manolo $"
+//
+