Fluid: restructuring and rejuvenation of the source code.

* Add classes for application and project
* Removed all globals from Fluid.h
* Extracting args and project history into their own classes
* Moving globals into Application class
* Initialize values inside headers for some classes.
* Undo functionality wrapped in a class inside Project.
* File reader and writer are now linked to a project.
* Avoid global project access
* Nodes (former Types) will be managed by a new Tree class.
* Removed static members (hidden globals) form Node/Fl_Type.
* Adding Tree iterator.
* Use nullptr instead of 0, NULL, or 0L
* Renamed Fl_..._Type to ..._Node, FL_OVERRIDE -> override
* Renaming ..._type to ...::prototype
* Splitting Widget Panel into multiple files.
* Moved callback code into widget panel file.
* Cleaning up Fluid_Image -> Image_asset
* Moving Fd_Snap_Action into new namespace fld::app::Snap_Action etc.
* Moved mergeback into proj folder.
* `enum ID` is now `enum class Type`.

1 files changed, 0 insertions, 24 deletions

diff --git a/fluid/app/align_widget.h b/fluid/app/align_widget.h
deleted file mode 100644
index f04372215..000000000
--- a/fluid/app/align_widget.h
+++ /dev/null
@@ -1,24 +0,0 @@
-//
-// FLUID main entry 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_ALIGN_WIDGET_H
-#define _FLUID_ALIGN_WIDGET_H
-
-class Fl_Widget;
-
-void align_widget_cb(Fl_Widget *, long);
-
-#endif // _FLUID_ALIGN_WIDGET_H