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, 90 insertions, 0 deletions

diff --git a/fluid/panels/widget_panel/Grid_Tab.h b/fluid/panels/widget_panel/Grid_Tab.h
new file mode 100644
index 000000000..4b06a9e43
--- /dev/null
+++ b/fluid/panels/widget_panel/Grid_Tab.h
@@ -0,0 +1,90 @@
+// generated by Fast Light User Interface Designer (fluid) version 1.0500
+
+#ifndef Grid_Tab_h
+#define Grid_Tab_h
+#include <FL/Fl.H>
+#include "widgets/Formula_Input.h"
+#include <FL/Fl_Group.H>
+extern void propagate_load(Fl_Group*, void*);
+#include <FL/Fl_Button.H>
+#include <FL/Fl_Box.H>
+#include <FL/Fl_Value_Input.H>
+
+class Grid_Tab : public Fl_Group {
+public:
+  Grid_Tab(int X, int Y, int W, int H, const char *L = 0);
+  fld::widget::Formula_Input *widget_grid_rows;
+private:
+  inline void cb_widget_grid_rows_i(fld::widget::Formula_Input*, void*);
+  static void cb_widget_grid_rows(fld::widget::Formula_Input*, void*);
+  inline void cb__i(Fl_Button*, void*);
+  static void cb_(Fl_Button*, void*);
+  inline void cb_1_i(Fl_Button*, void*);
+  static void cb_1(Fl_Button*, void*);
+public:
+  fld::widget::Formula_Input *widget_grid_cols;
+private:
+  inline void cb_widget_grid_cols_i(fld::widget::Formula_Input*, void*);
+  static void cb_widget_grid_cols(fld::widget::Formula_Input*, void*);
+  inline void cb_2_i(Fl_Button*, void*);
+  static void cb_2(Fl_Button*, void*);
+  inline void cb_3_i(Fl_Button*, void*);
+  static void cb_3(Fl_Button*, void*);
+public:
+  Fl_Group *wp_grid_margin;
+private:
+  inline void cb_Left_i(Fl_Value_Input*, void*);
+  static void cb_Left(Fl_Value_Input*, void*);
+  inline void cb_Top_i(Fl_Value_Input*, void*);
+  static void cb_Top(Fl_Value_Input*, void*);
+  inline void cb_Right_i(Fl_Value_Input*, void*);
+  static void cb_Right(Fl_Value_Input*, void*);
+  inline void cb_Bottom_i(Fl_Value_Input*, void*);
+  static void cb_Bottom(Fl_Value_Input*, void*);
+public:
+  Fl_Group *wp_grid_gaps;
+private:
+  inline void cb_Row_i(Fl_Value_Input*, void*);
+  static void cb_Row(Fl_Value_Input*, void*);
+  inline void cb_Col_i(Fl_Value_Input*, void*);
+  static void cb_Col(Fl_Value_Input*, void*);
+  inline void cb_Row1_i(Fl_Group*, void*);
+  static void cb_Row1(Fl_Group*, void*);
+public:
+  fld::widget::Formula_Input *widget_grid_curr_row;
+private:
+  inline void cb_widget_grid_curr_row_i(fld::widget::Formula_Input*, void*);
+  static void cb_widget_grid_curr_row(fld::widget::Formula_Input*, void*);
+  inline void cb_4_i(Fl_Button*, void*);
+  static void cb_4(Fl_Button*, void*);
+  inline void cb_5_i(Fl_Button*, void*);
+  static void cb_5(Fl_Button*, void*);
+public:
+  Fl_Group *widget_grid_curr_row_attributes;
+private:
+  inline void cb_Height_i(fld::widget::Formula_Input*, void*);
+  static void cb_Height(fld::widget::Formula_Input*, void*);
+  inline void cb_Weight_i(fld::widget::Formula_Input*, void*);
+  static void cb_Weight(fld::widget::Formula_Input*, void*);
+  inline void cb_Gap_i(fld::widget::Formula_Input*, void*);
+  static void cb_Gap(fld::widget::Formula_Input*, void*);
+public:
+  fld::widget::Formula_Input *widget_grid_curr_col;
+private:
+  inline void cb_widget_grid_curr_col_i(fld::widget::Formula_Input*, void*);
+  static void cb_widget_grid_curr_col(fld::widget::Formula_Input*, void*);
+  inline void cb_6_i(Fl_Button*, void*);
+  static void cb_6(Fl_Button*, void*);
+  inline void cb_7_i(Fl_Button*, void*);
+  static void cb_7(Fl_Button*, void*);
+public:
+  Fl_Group *widget_grid_curr_col_attributes;
+private:
+  inline void cb_Width_i(fld::widget::Formula_Input*, void*);
+  static void cb_Width(fld::widget::Formula_Input*, void*);
+  inline void cb_Weight1_i(fld::widget::Formula_Input*, void*);
+  static void cb_Weight1(fld::widget::Formula_Input*, void*);
+  inline void cb_Gap1_i(fld::widget::Formula_Input*, void*);
+  static void cb_Gap1(fld::widget::Formula_Input*, void*);
+};
+#endif