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, 6 insertions, 109 deletions

diff --git a/fluid/panels/widget_panel.h b/fluid/panels/widget_panel.h
index bac21a771..80ccd4171 100644
--- a/fluid/panels/widget_panel.h
+++ b/fluid/panels/widget_panel.h
@@ -19,7 +19,10 @@
 #ifndef widget_panel_h
 #define widget_panel_h
 #include <FL/Fl.H>
+#include "panels/widget_panel/Grid_Child_Tab.h"
+#include "panels/widget_panel/Grid_Tab.h"
 #include "widgets/Formula_Input.h"
+class Fl_Flex;
 #include <FL/Fl_Double_Window.H>
 extern Fl_Double_Window *image_panel_window;
 #include <FL/Fl_Group.H>
@@ -32,17 +35,14 @@ extern fld::widget::Formula_Input *image_panel_imagew;
 extern fld::widget::Formula_Input *image_panel_imageh;
 #include <FL/Fl_Button.H>
 #include <FL/Fl_Check_Button.H>
-extern void compress_image_cb(Fl_Check_Button*, void*);
-extern void bind_image_cb(Fl_Check_Button*, void*);
 extern Fl_Group *image_panel_deimagegroup;
 extern Fl_Box *image_panel_dedata;
 extern fld::widget::Formula_Input *image_panel_deimagew;
 extern fld::widget::Formula_Input *image_panel_deimageh;
-extern void compress_deimage_cb(Fl_Check_Button*, void*);
-extern void bind_deimage_cb(Fl_Check_Button*, void*);
 extern Fl_Button *image_panel_close;
 Fl_Double_Window* make_image_panel();
 void run_image_panel();
+void flex_margin_cb(Fl_Value_Input* i, void* v, void (*load_margin)(Fl_Flex*,Fl_Value_Input*), int (*update_margin)(Fl_Flex*,int));
 #include <FL/Fl_Tabs.H>
 extern Fl_Tabs *widget_tabs;
 extern Fl_Group *wp_gui_tab;
@@ -52,159 +52,59 @@ extern Fl_Input *wp_gui_label;
 #include <FL/Fl_Choice.H>
 extern Fl_Menu_Item labeltypemenu[];
 extern void labeltype_cb(Fl_Choice*, void*);
-extern void image_cb(Fl_Input*, void*);
 extern Fl_Input *widget_image_input;
-extern void image_browse_cb(Fl_Button*, void*);
-extern void inactive_cb(Fl_Input*, void*);
 extern Fl_Input *widget_deimage_input;
-extern void inactive_browse_cb(Fl_Button*, void*);
 extern Fl_Group *wp_gui_alignment;
 extern void align_cb(Fl_Button*, void*);
 extern void align_text_image_cb(Fl_Choice*, void*);
 extern void align_position_cb(Fl_Choice*, void*);
 extern void position_group_cb(Fl_Group*, void*);
-extern void x_cb(fld::widget::Formula_Input*, void*);
 extern fld::widget::Formula_Input *widget_x_input;
-extern void y_cb(fld::widget::Formula_Input*, void*);
 extern fld::widget::Formula_Input *widget_y_input;
-extern void w_cb(fld::widget::Formula_Input*, void*);
 extern fld::widget::Formula_Input *widget_w_input;
-extern void h_cb(fld::widget::Formula_Input*, void*);
 extern fld::widget::Formula_Input *widget_h_input;
-extern void wc_relative_cb(Fl_Choice*, void*);
-extern void flex_size_group_cb(Fl_Group*, void*);
 extern Fl_Group *wp_gui_flexp;
 #include <FL/Fl_Value_Input.H>
-extern void flex_size_cb(Fl_Value_Input*, void*);
 extern Fl_Value_Input *widget_flex_size;
-extern void flex_fixed_cb(Fl_Check_Button*, void*);
 extern Fl_Check_Button *widget_flex_fixed;
-extern void values_group_cb(Fl_Group*, void*);
 extern Fl_Group *wp_gui_values;
-extern void slider_size_cb(Fl_Value_Input*, void*);
-extern void min_cb(Fl_Value_Input*, void*);
-extern void max_cb(Fl_Value_Input*, void*);
-extern void step_cb(Fl_Value_Input*, void*);
-extern void value_cb(Fl_Value_Input*, void*);
-extern void flex_margin_group_cb(Fl_Group*, void*);
 extern Fl_Group *wp_gui_margins;
-extern void flex_margin_left_cb(Fl_Value_Input*, void*);
-extern void flex_margin_top_cb(Fl_Value_Input*, void*);
-extern void flex_margin_right_cb(Fl_Value_Input*, void*);
-extern void flex_margin_bottom_cb(Fl_Value_Input*, void*);
-extern void flex_margin_gap_cb(Fl_Value_Input*, void*);
-extern void size_range_group_cb(Fl_Group*, void*);
 extern Fl_Group *wp_gui_sizerange;
-extern void min_w_cb(Fl_Value_Input*, void*);
-extern void min_h_cb(Fl_Value_Input*, void*);
-extern void set_min_size_cb(Fl_Button*, void*);
-extern void max_w_cb(Fl_Value_Input*, void*);
-extern void max_h_cb(Fl_Value_Input*, void*);
-extern void set_max_size_cb(Fl_Button*, void*);
 #include <FL/Fl_Shortcut_Button.H>
-extern void shortcut_in_cb(Fl_Shortcut_Button*, void*);
 extern Fl_Shortcut_Button *wp_gui_shortcut;
 extern Fl_Group *wp_gui_xclass;
-extern void xclass_cb(Fl_Input*, void*);
 #include <FL/Fl_Light_Button.H>
-extern void border_cb(Fl_Light_Button*, void*);
-extern void modal_cb(Fl_Light_Button*, void*);
-extern void non_modal_cb(Fl_Light_Button*, void*);
 extern Fl_Group *wp_gui_attributes;
-extern void visible_cb(Fl_Light_Button*, void*);
-extern void active_cb(Fl_Light_Button*, void*);
-extern void resizable_cb(Fl_Light_Button*, void*);
-extern void hotspot_cb(Fl_Light_Button*, void*);
-extern void tooltip_cb(Fl_Input*, void*);
 extern Fl_Input *wp_gui_tooltip;
 extern Fl_Group *wp_style_tab;
 extern Fl_Group *wp_style_label;
 extern Fl_Menu_Item fontmenu[];
-extern void labelfont_cb(Fl_Choice*, void*);
-extern void labelsize_cb(Fl_Value_Input*, void*);
-extern void labelcolor_cb(Fl_Button*, void*);
 extern Fl_Button *w_labelcolor;
 #include <FL/Fl_Menu_Button.H>
 extern Fl_Menu_Item colormenu[];
-extern void labelcolor_menu_cb(Fl_Menu_Button*, void*);
 extern Fl_Group *wp_style_box;
 extern Fl_Menu_Item boxmenu[];
-extern void box_cb(Fl_Choice*, void*);
-extern void color_cb(Fl_Button*, void*);
 extern Fl_Button *w_color;
-extern void color_menu_cb(Fl_Menu_Button*, void*);
 extern Fl_Group *wp_style_downbox;
-extern void down_box_cb(Fl_Choice*, void*);
-extern void color2_cb(Fl_Button*, void*);
 extern Fl_Button *w_selectcolor;
-extern void color2_menu_cb(Fl_Menu_Button*, void*);
 extern Fl_Group *wp_style_text;
-extern void textfont_cb(Fl_Choice*, void*);
-extern void textsize_cb(Fl_Value_Input*, void*);
-extern void textcolor_cb(Fl_Button*, void*);
 extern Fl_Button *w_textcolor;
-extern void textcolor_menu_cb(Fl_Menu_Button*, void*);
-extern void h_label_margin_cb(Fl_Value_Input*, void*);
-extern void v_label_margin_cb(Fl_Value_Input*, void*);
-extern void image_spacing_cb(Fl_Value_Input*, void*);
-extern void compact_cb(Fl_Light_Button*, void*);
 extern Fl_Group *wp_cpp_tab;
 extern Fl_Group *wp_cpp_class;
-extern void subclass_cb(Fl_Input*, void*);
-extern void subtype_cb(Fl_Choice*, void*);
 extern Fl_Group *wp_cpp_name;
-extern void name_cb(Fl_Input*, void*);
-extern void name_public_member_cb(Fl_Choice*, void*);
 extern void name_public_cb(Fl_Choice*, void*);
-extern void v_input_cb(Fl_Input*, void*);
 extern Fl_Input *v_input[4];
 #include <FL/Fl_Tile.H>
 #include <FL/Fl_Text_Editor.H>
 extern Fl_Text_Editor *wComment;
 #include "widgets/Code_Editor.h"
-extern void callback_cb(fld::widget::Code_Editor*, void*);
 extern fld::widget::Code_Editor *wCallback;
 extern Fl_Group *wp_cpp_callback;
-extern void user_data_cb(Fl_Input*, void*);
 extern Fl_Menu_Item whenmenu[];
-extern void when_cb(Fl_Menu_Button*, void*);
 #include <FL/Fl_Input_Choice.H>
-extern void user_data_type_cb(Fl_Input_Choice*, void*);
 extern Fl_Box *w_when_box;
-extern Fl_Group *widget_tab_grid_child;
-extern void grid_set_row_cb(fld::widget::Formula_Input*, void*);
-extern fld::widget::Formula_Input *widget_grid_row_input;
-extern void grid_dec_row_cb(Fl_Button*, void*);
-extern void grid_inc_row_cb(Fl_Button*, void*);
-extern void grid_set_col_cb(fld::widget::Formula_Input*, void*);
-extern fld::widget::Formula_Input *widget_grid_col_input;
-extern void grid_dec_col_cb(Fl_Button*, void*);
-extern void grid_inc_col_cb(Fl_Button*, void*);
-extern Fl_Box *widget_grid_transient;
-extern Fl_Box *widget_grid_unlinked;
-extern Fl_Group *wp_gridc_align;
-extern void grid_align_horizontal_cb(Fl_Choice*, void*);
-extern void grid_align_vertical_cb(Fl_Choice*, void*);
-extern Fl_Group *wp_gridc_size;
-extern void grid_set_min_wdt_cb(fld::widget::Formula_Input*, void*);
-extern void grid_set_min_hgt_cb(fld::widget::Formula_Input*, void*);
-extern void grid_set_rowspan_cb(fld::widget::Formula_Input*, void*);
-extern fld::widget::Formula_Input *widget_grid_rowspan_input;
-extern void grid_dec_rowspan_cb(Fl_Button*, void*);
-extern void grid_inc_rowspan_cb(Fl_Button*, void*);
-extern void grid_set_colspan_cb(fld::widget::Formula_Input*, void*);
-extern fld::widget::Formula_Input *widget_grid_colspan_input;
-extern void grid_dec_colspan_cb(Fl_Button*, void*);
-extern void grid_inc_colspan_cb(Fl_Button*, void*);
-extern Fl_Group *widget_tab_grid;
-extern fld::widget::Formula_Input *widget_grid_rows;
-extern fld::widget::Formula_Input *widget_grid_cols;
-extern Fl_Group *wp_grid_margin;
-extern Fl_Group *wp_grid_gaps;
-extern fld::widget::Formula_Input *widget_grid_curr_row;
-extern Fl_Group *widget_grid_curr_row_attributes;
-extern fld::widget::Formula_Input *widget_grid_curr_col;
-extern Fl_Group *widget_grid_curr_col_attributes;
+extern Grid_Tab *widget_tab_grid;
+extern Grid_Child_Tab *widget_tab_grid_child;
 extern Fl_Tabs *widget_tabs_repo;
 extern void live_mode_cb(Fl_Button*, void*);
 extern Fl_Button *wLiveMode;
@@ -219,7 +119,4 @@ extern Fl_Menu_Item menu_Children[];
 extern Fl_Menu_Item menu_2[];
 extern Fl_Menu_Item menu_3[];
 extern Fl_Menu_Item menu_4[];
-extern Fl_Menu_Item menu_Horizontal[];
-#define GRID_LEFT (menu_Horizontal+0)
-extern Fl_Menu_Item menu_Vertical[];
 #endif