FLUID: emulated RTTI for all types

Complete type hierarchy in Fl_Types doc
Window now derives correctly from Group
Menu Items now correctly (functionally in FLUID) derived form Button
Menu Buttons have a better hierarchy
Fixing two possible crash bugs where Input_Choice was assumed to be a Menu_
Hoping I have not degraded the original code!

1 files changed, 43 insertions, 0 deletions

diff --git a/fluid/Fl_Button_Type.h b/fluid/Fl_Button_Type.h
new file mode 100644
index 000000000..f80a60beb
--- /dev/null
+++ b/fluid/Fl_Button_Type.h
@@ -0,0 +1,43 @@
+//
+// Widget type header file for the Fast Light Tool Kit (FLTK).
+//
+// Copyright 1998-2021 by Bill Spitzak and others.
+//
+// This library is free software. Distribution and use rights are outlined in
+// the file "COPYING" which should have been included with this file.  If this
+// file is missing or damaged, see the license at:
+//
+//     https://www.fltk.org/COPYING.php
+//
+// Please see the following page on how to report bugs and issues:
+//
+//     https://www.fltk.org/bugs.php
+//
+
+#ifndef _FLUID_FACTORY_H
+#define _FLUID_FACTORY_H
+
+#include "Fl_Widget_Type.h"
+
+/**
+ \brief A handler for the simple push button and a base class for all other buttons.
+ */
+class Fl_Button_Type : public Fl_Widget_Type
+{
+  typedef Fl_Widget_Type super;
+  Fl_Menu_Item *subtypes() FL_OVERRIDE;
+public:
+  void ideal_size(int &w, int &h) FL_OVERRIDE;
+  const char *type_name() FL_OVERRIDE { return "Fl_Button"; }
+  const char *alt_type_name() FL_OVERRIDE { return "fltk::Button"; }
+  Fl_Widget *widget(int x, int y, int w, int h);
+  Fl_Widget_Type *_make() FL_OVERRIDE { return new Fl_Button_Type(); }
+  int is_button() const FL_OVERRIDE { return 1; }
+  ID id() const FL_OVERRIDE { return ID_Button; }
+  bool is_a(ID inID) FL_OVERRIDE { return (inID==ID_Button) ? true : super::is_a(inID); }
+};
+
+extern Fl_Button_Type Fl_Button_type;
+
+
+#endif // _FLUID_FACTORY_H