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, 414 deletions

diff --git a/fluid/app/align_widget.cxx b/fluid/app/align_widget.cxx
deleted file mode 100644
index a9badf9e4..000000000
--- a/fluid/app/align_widget.cxx
+++ /dev/null
@@ -1,414 +0,0 @@
-//
-// Alignment code for the Fast Light Tool Kit (FLTK).
-//
-// Copyright 1998-2023 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
-//
-
-#include "app/align_widget.h"
-
-#include "app/fluid.h"
-#include "app/undo.h"
-#include "nodes/Fl_Group_Type.h"
-
-#include <FL/Fl.H>
-#include <FL/Fl_Window.H>
-
-/**
- the first behavior always uses the first selected widget as a reference
- the second behavior uses the largest widget (most extreme positions) as
- a reference.
- */
-#define BREAK_ON_FIRST break
-//#define BREAK_ON_FIRST
-
-void align_widget_cb(Fl_Widget*, long how)
-{
-  const int max = 32768, min = -32768;
-  int left, right, top, bot, wdt, hgt, n;
-  Fl_Type *o;
-  int changed = 0;
-  switch ( how )
-  {
-  //---- align
-  case 10: // align left
-    left = max;
-    for (o = Fl_Type::first; o; o = o->next)
-      if (o->selected && o->is_widget())
-      {
-        Fl_Widget *w = ((Fl_Widget_Type *)o)->o;
-        if (w->x()<left)
-          left = w->x();
-        BREAK_ON_FIRST;
-      }
-    if (left!=max)
-      for (Fl_Type *o = Fl_Type::first; o; o = o->next)
-        if (o->selected && o->is_widget())
-        {
-          if (!changed) {
-            changed = 1;
-            undo_checkpoint();
-          }
-          Fl_Widget *w = ((Fl_Widget_Type *)o)->o;
-          Fl_Type::allow_layout++;
-          w->resize(left, w->y(), w->w(), w->h());
-          Fl_Type::allow_layout--;
-          w->redraw();
-          if (w->window()) w->window()->redraw();
-        }
-    break;
-  case 11: // align h.center
-    left = max; right = min;
-    for (o = Fl_Type::first; o; o = o->next)
-      if (o->selected && o->is_widget())
-      {
-        Fl_Widget *w = ((Fl_Widget_Type *)o)->o;
-        if (w->x()<left)
-          left = w->x();
-        if (w->x()+w->w()>right)
-          right = w->x()+w->w();
-        BREAK_ON_FIRST;
-      }
-    if (left!=max)
-    {
-      int center2 = left+right;
-      for (Fl_Type *o = Fl_Type::first; o; o = o->next)
-        if (o->selected && o->is_widget())
-        {
-          if (!changed) {
-            changed = 1;
-            undo_checkpoint();
-          }
-          Fl_Widget *w = ((Fl_Widget_Type *)o)->o;
-          Fl_Type::allow_layout++;
-          w->resize((center2-w->w())/2, w->y(), w->w(), w->h());
-          Fl_Type::allow_layout--;
-          w->redraw();
-          if (w->window()) w->window()->redraw();
-        }
-    }
-    break;
-  case 12: // align right
-    right = min;
-    for (o = Fl_Type::first; o; o = o->next)
-      if (o->selected && o->is_widget())
-      {
-        Fl_Widget *w = ((Fl_Widget_Type *)o)->o;
-        if (w->x()+w->w()>right)
-          right = w->x()+w->w();
-        BREAK_ON_FIRST;
-      }
-    if (right!=min)
-      for (Fl_Type *o = Fl_Type::first; o; o = o->next)
-        if (o->selected && o->is_widget())
-        {
-          if (!changed) {
-            changed = 1;
-            undo_checkpoint();
-          }
-          Fl_Widget *w = ((Fl_Widget_Type *)o)->o;
-          Fl_Type::allow_layout++;
-          w->resize(right-w->w(), w->y(), w->w(), w->h());
-          Fl_Type::allow_layout--;
-          w->redraw();
-          if (w->window()) w->window()->redraw();
-        }
-    break;
-  case 13: // align top
-    top = max;
-    for (o = Fl_Type::first; o; o = o->next)
-      if (o->selected && o->is_widget())
-      {
-        Fl_Widget *w = ((Fl_Widget_Type *)o)->o;
-        if (w->y()<top)
-          top = w->y();
-        BREAK_ON_FIRST;
-      }
-    if (top!=max)
-      for (Fl_Type *o = Fl_Type::first; o; o = o->next)
-        if (o->selected && o->is_widget())
-        {
-          if (!changed) {
-            changed = 1;
-            undo_checkpoint();
-          }
-          Fl_Widget *w = ((Fl_Widget_Type *)o)->o;
-          Fl_Type::allow_layout++;
-          w->resize(w->x(), top, w->w(), w->h());
-          Fl_Type::allow_layout--;
-          w->redraw();
-          if (w->window()) w->window()->redraw();
-        }
-    break;
-  case 14: // align v.center
-    top = max; bot = min;
-    for (o = Fl_Type::first; o; o = o->next)
-      if (o->selected && o->is_widget())
-      {
-        Fl_Widget *w = ((Fl_Widget_Type *)o)->o;
-        if (w->y()<top)
-          top = w->y();
-        if (w->y()+w->h()>bot)
-          bot = w->y()+w->h();
-        BREAK_ON_FIRST;
-      }
-    if (top!=max)
-    {
-      int center2 = top+bot;
-      for (Fl_Type *o = Fl_Type::first; o; o = o->next)
-        if (o->selected && o->is_widget())
-        {
-          if (!changed) {
-            changed = 1;
-            undo_checkpoint();
-          }
-          Fl_Widget *w = ((Fl_Widget_Type *)o)->o;
-          Fl_Type::allow_layout++;
-          w->resize(w->x(), (center2-w->h())/2, w->w(), w->h());
-          Fl_Type::allow_layout--;
-          w->redraw();
-          if (w->window()) w->window()->redraw();
-        }
-    }
-    break;
-  case 15: // align bottom
-    bot = min;
-    for (o = Fl_Type::first; o; o = o->next)
-      if (o->selected && o->is_widget())
-      {
-        Fl_Widget *w = ((Fl_Widget_Type *)o)->o;
-        if (w->y()+w->h()>bot)
-          bot = w->y()+w->h();
-        BREAK_ON_FIRST;
-      }
-    if (bot!=min)
-      for (Fl_Type *o = Fl_Type::first; o; o = o->next)
-        if (o->selected && o->is_widget())
-        {
-          if (!changed) {
-            changed = 1;
-            undo_checkpoint();
-          }
-          Fl_Widget *w = ((Fl_Widget_Type *)o)->o;
-          Fl_Type::allow_layout++;
-          w->resize( w->x(), bot-w->h(), w->w(), w->h());
-          Fl_Type::allow_layout--;
-          w->redraw();
-          if (w->window()) w->window()->redraw();
-        }
-    break;
-  //---- space evenly
-  case 20: // space evenly across
-    left = max; right = min; wdt = 0; n = 0;
-    for (o = Fl_Type::first; o; o = o->next)
-      if (o->selected && o->is_widget())
-      {
-        Fl_Widget *w = ((Fl_Widget_Type *)o)->o;
-        if (w->x()<left)
-          left = w->x();
-        if (w->x()+w->w()>right)
-          right = w->x()+w->w();
-        wdt += w->w();
-        n++;
-      }
-    wdt = (right-left)-wdt;
-    n--;
-    if (n>0)
-    {
-      wdt = wdt/n*n; // make sure that all gaps are the same, possibly moving the rightmost widget
-      int cnt = 0, wsum = 0;
-      for (Fl_Type *o = Fl_Type::first; o; o = o->next)
-        if (o->selected && o->is_widget())
-        {
-          if (!changed) {
-            changed = 1;
-            undo_checkpoint();
-          }
-          Fl_Widget *w = ((Fl_Widget_Type *)o)->o;
-          Fl_Type::allow_layout++;
-          w->resize(left+wsum+wdt*cnt/n, w->y(), w->w(), w->h());
-          Fl_Type::allow_layout--;
-          w->redraw();
-          if (w->window()) w->window()->redraw();
-          cnt++;
-          wsum += w->w();
-        }
-    }
-    break;
-  case 21: // space evenly down
-    top = max; bot = min; hgt = 0, n = 0;
-    for (o = Fl_Type::first; o; o = o->next)
-      if (o->selected && o->is_widget())
-      {
-        Fl_Widget *w = ((Fl_Widget_Type *)o)->o;
-        if (w->y()<top)
-          top = w->y();
-        if (w->y()+w->h()>bot)
-          bot = w->y()+w->h();
-        hgt += w->h();
-        n++;
-      }
-    hgt = (bot-top)-hgt;
-    n--;
-    if (n>0)
-    {
-      hgt = hgt/n*n; // make sure that all gaps are the same, possibly moving the rightmost widget
-      int cnt = 0, hsum = 0;
-      for (Fl_Type *o = Fl_Type::first; o; o = o->next)
-        if (o->selected && o->is_widget())
-        {
-          if (!changed) {
-            changed = 1;
-            undo_checkpoint();
-          }
-          Fl_Widget *w = ((Fl_Widget_Type *)o)->o;
-          Fl_Type::allow_layout++;
-          w->resize(w->x(), top+hsum+hgt*cnt/n, w->w(), w->h());
-          Fl_Type::allow_layout--;
-          w->redraw();
-          if (w->window()) w->window()->redraw();
-          cnt++;
-          hsum += w->h();
-        }
-    }
-    break;
-  //---- make same size
-  case 30: // same width
-    wdt = min;
-    for (o = Fl_Type::first; o; o = o->next)
-      if (o->selected && o->is_widget())
-      {
-        Fl_Widget *w = ((Fl_Widget_Type *)o)->o;
-        if (w->w()>wdt)
-          wdt = w->w();
-        BREAK_ON_FIRST;
-      }
-    if (wdt!=min)
-      for (Fl_Type *o = Fl_Type::first; o; o = o->next)
-        if (o->selected && o->is_widget())
-        {
-          if (!changed) {
-            changed = 1;
-            undo_checkpoint();
-          }
-          Fl_Widget *w = ((Fl_Widget_Type *)o)->o;
-          Fl_Type::allow_layout++;
-          w->resize(w->x(), w->y(), wdt, w->h());
-          Fl_Type::allow_layout--;
-          w->redraw();
-          if (w->window()) w->window()->redraw();
-        }
-    break;
-  case 31: // same height
-    hgt = min;
-    for (o = Fl_Type::first; o; o = o->next)
-      if (o->selected && o->is_widget())
-      {
-        Fl_Widget *w = ((Fl_Widget_Type *)o)->o;
-        if (w->h()>hgt)
-          hgt = w->h();
-        BREAK_ON_FIRST;
-      }
-    if (hgt!=min)
-      for (Fl_Type *o = Fl_Type::first; o; o = o->next)
-        if (o->selected && o->is_widget())
-        {
-          if (!changed) {
-            changed = 1;
-            undo_checkpoint();
-          }
-          Fl_Widget *w = ((Fl_Widget_Type *)o)->o;
-          Fl_Type::allow_layout++;
-          w->resize( w->x(), w->y(), w->w(), hgt);
-          Fl_Type::allow_layout--;
-          w->redraw();
-          if (w->window()) w->window()->redraw();
-        }
-    break;
-  case 32: // same size
-    hgt = min; wdt = min;
-    for (o = Fl_Type::first; o; o = o->next)
-      if (o->selected && o->is_widget())
-      {
-        Fl_Widget *w = ((Fl_Widget_Type *)o)->o;
-        if (w->w()>wdt)
-          wdt = w->w();
-        if (w->h()>hgt)
-          hgt = w->h();
-        BREAK_ON_FIRST;
-      }
-    if (hgt!=min)
-      for (Fl_Type *o = Fl_Type::first; o; o = o->next)
-        if (o->selected && o->is_widget())
-        {
-          if (!changed) {
-            changed = 1;
-            undo_checkpoint();
-          }
-          Fl_Widget *w = ((Fl_Widget_Type *)o)->o;
-          Fl_Type::allow_layout++;
-          w->resize( w->x(), w->y(), wdt, hgt);
-          Fl_Type::allow_layout--;
-          w->redraw();
-          if (w->window()) w->window()->redraw();
-        }
-    break;
-  //---- center in group
-  case 40: // center hor
-    for (o = Fl_Type::first; o; o = o->next)
-      if (o->selected && o->is_widget() && o->parent)
-      {
-        if (!changed) {
-          changed = 1;
-          undo_checkpoint();
-        }
-        Fl_Widget *w = ((Fl_Widget_Type *)o)->o;
-        Fl_Widget *p = ((Fl_Widget_Type *)o->parent)->o;
-        int center2;
-
-        if (w->window() == p) center2 = p->w();
-        else center2 = 2*p->x()+p->w();
-
-        Fl_Type::allow_layout++;
-        w->resize((center2-w->w())/2, w->y(), w->w(), w->h());
-        Fl_Type::allow_layout--;
-        w->redraw();
-        if (w->window()) w->window()->redraw();
-      }
-    break;
-  case 41: // center vert
-    for (o = Fl_Type::first; o; o = o->next)
-      if (o->selected && o->is_widget() && o->parent)
-      {
-        if (!changed) {
-          changed = 1;
-          undo_checkpoint();
-        }
-        Fl_Widget *w = ((Fl_Widget_Type *)o)->o;
-        Fl_Widget *p = ((Fl_Widget_Type *)o->parent)->o;
-        int center2;
-
-        if (w->window() == p) center2 = p->h();
-        else center2 = 2*p->y()+p->h();
-
-        Fl_Type::allow_layout++;
-        w->resize(w->x(), (center2-w->h())/2, w->w(), w->h());
-        Fl_Type::allow_layout--;
-        set_modflag(1);
-        w->redraw();
-        if (w->window()) w->window()->redraw();
-      }
-    break;
-  }
-  if (changed)
-    set_modflag(1);
-}