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/FL/Fl_Tabs.H b/common/fltk/FL/Fl_Tabs.H
new file mode 100644
index 0000000..66b4d3b
--- /dev/null
+++ b/common/fltk/FL/Fl_Tabs.H
@@ -0,0 +1,92 @@
+//
+// "$Id: Fl_Tabs.H 8101 2010-12-22 13:06:03Z AlbrechtS $"
+//
+// Tab header file 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
+//
+
+/* \file
+   Fl_Tabs widget . */
+
+#ifndef Fl_Tabs_H
+#define Fl_Tabs_H
+
+#include "Fl_Group.H"
+
+/**
+  The Fl_Tabs widget is the "file card tabs"
+  interface that allows you to put lots and lots of buttons and
+  switches in a panel, as popularized by many toolkits.
+  
+  \image html  tabs.png
+  \image latex tabs.png "Fl_Tabs" width=8cm
+  
+  Clicking the tab makes a child visible() by calling
+  show() on it, and all other children are made invisible
+  by calling hide() on them. Usually the children are Fl_Group widgets
+  containing several widgets themselves.
+  
+  Each child makes a card, and its label() is printed
+  on the card tab, including the label font and style.  The
+  selection color of that child is used to color the tab, while
+  the color of the child determines the background color of the pane.
+  
+  The size of the tabs is controlled by the bounding box of the
+  children (there should be some space between the children and
+  the edge of the Fl_Tabs), and the tabs may be placed
+  "inverted" on the bottom - this is determined by which
+  gap is larger. It is easiest to lay this out in fluid, using the
+  fluid browser to select each child group and resize them until
+  the tabs look the way you want them to.
+*/
+class FL_EXPORT Fl_Tabs : public Fl_Group {
+  Fl_Widget *value_;
+  Fl_Widget *push_;
+  int *tab_pos;		// array of x-offsets of tabs per child + 1
+  int *tab_width;	// array of widths of tabs per child + 1
+  int tab_count;	// array size
+  int tab_positions();	// allocate and calculate tab positions
+  void clear_tab_positions();
+  int tab_height();
+  void draw_tab(int x1, int x2, int W, int H, Fl_Widget* o, int sel=0);
+protected:
+  void redraw_tabs();
+  void draw();
+
+public:
+  int handle(int);
+  Fl_Widget *value();
+  int value(Fl_Widget *);
+  Fl_Widget *push() const {return push_;}
+  int push(Fl_Widget *);
+  Fl_Tabs(int,int,int,int,const char * = 0);
+  Fl_Widget *which(int event_x, int event_y);
+  ~Fl_Tabs();
+  void client_area(int &rx, int &ry, int &rw, int &rh, int tabh=0);
+};
+
+#endif
+
+//
+// End of "$Id: Fl_Tabs.H 8101 2010-12-22 13:06:03Z AlbrechtS $".
+//