FLUID mark project change when changing window visibility

fluid/Fl_Window_Type.cxx

@@ -140,13 +140,29 @@ static int overlays_invisible;
 class Overlay_Window : public Fl_Overlay_Window {
   void draw() FL_OVERRIDE;
   void draw_overlay() FL_OVERRIDE;
+  static void close_cb(Overlay_Window *self, void*);
 public:
   Fl_Window_Type *window;
   int handle(int) FL_OVERRIDE;
-  Overlay_Window(int W,int H) : Fl_Overlay_Window(W,H) {Fl_Group::current(0);}
+  Overlay_Window(int W,int H) : Fl_Overlay_Window(W,H) {
+    Fl_Group::current(0);
+    callback((Fl_Callback*)close_cb);
+  }
   void resize(int,int,int,int) FL_OVERRIDE;
   uchar *read_image(int &ww, int &hh);
 };
+
+/**
+ \brief User closes the window, so we mark the .fl file as changed.
+ Mark the .fl file a changed, but don;t mark the source files as changed.
+ \param self pointer to this window
+ */
+void Overlay_Window::close_cb(Overlay_Window *self, void*) {
+  if (self->visible())
+    set_modflag(1, -2);
+  self->hide();
+}
+
 void Overlay_Window::draw() {
   const int CHECKSIZE = 8;
   // see if box is clear or a frame or rounded:
@@ -265,9 +281,11 @@ void Fl_Window_Type::move_child(Fl_Type* cc, Fl_Type* before) {
 
 ////////////////////////////////////////////////////////////////
 
-// Double-click on window widget shows the window, or if already shown,
-// it shows the control panel.
-void Fl_Window_Type::open() {
+/**
+ \brief Show the Window Type editor window without setting the modified flag.
+ \see Fl_Window_Type::open()
+ */
+void Fl_Window_Type::open_() {
   Overlay_Window *w = (Overlay_Window *)o;
   if (w->shown()) {
     w->show();
@@ -281,6 +299,20 @@ void Fl_Window_Type::open() {
   w->image(Fl::scheme_bg_);
 }
 
+/**
+ \brief Show the Window Type editor window and set the modified flag if needed.
+ Double-click on window widget shows the window, or if already shown, it shows
+ the control panel.
+ \see Fl_Window_Type::open_()
+ */
+void Fl_Window_Type::open() {
+  Overlay_Window *w = (Overlay_Window *)o;
+  if (!w->visible()) {
+    set_modflag(1, -2);
+  }
+  open_();
+}
+
 // Read an image of the window
 uchar *Fl_Window_Type::read_image(int &ww, int &hh) {
   Overlay_Window *w = (Overlay_Window *)o;
@@ -1059,7 +1091,7 @@ void Fl_Window_Type::read_property(Fd_Project_Reader &f, const char *c) {
   } else if (!strcmp(c,"non_modal")) {
     non_modal = 1;
   } else if (!strcmp(c, "visible")) {
-    if (Fl::first_window()) open(); // only if we are using user interface
+    if (Fl::first_window()) open_(); // only if we are using user interface
   } else if (!strcmp(c,"noborder")) {
     ((Fl_Window*)o)->border(0);
   } else if (!strcmp(c,"xclass")) {

fluid/Fl_Window_Type.h

@@ -67,6 +67,7 @@ protected:
   int recalc;           // set by fix_overlay()
   void moveallchildren();
   int pixmapID() FL_OVERRIDE { return 1; }
+  void open_();
 
 public:
 

fluid/alignment_panel.fl

@@ -107,7 +107,7 @@ decl {void scheme_cb(Fl_Scheme_Choice *, void *);} {public local
 Function {make_settings_window()} {open
 } {
   Fl_Window settings_window {
-    label {GUI Settings} open
+    label {GUI Settings} open selected
     xywh {617 332 340 580} type Double align 80 resizable
     code0 {o->size_range(o->w(), o->h());} non_modal visible
   } {
@@ -198,7 +198,7 @@ redraw_browser();}
           callback {strncpy(G_external_editor_command, editor_command_input->value(), sizeof(G_external_editor_command)-1);
 G_external_editor_command[sizeof(G_external_editor_command)-1] = 0;
 fluid_prefs.set("external_editor_command", G_external_editor_command);
-redraw_browser();} selected
+redraw_browser();}
           tooltip {The editor command to open your external text editor.
 Include any necessary flags to ensure your editor does not background itself.
 Examples:

fluid/fluid.cxx

@@ -1781,7 +1781,7 @@ void set_filename(const char *c) {
  \param[in] mf 0 to clear the modflag, 1 to mark the design "modified", -1 to
     ignore this parameter
  \param[in] mfc default -1 to let \c mf control \c modflag_c, 0 to mark the
-    code files current, 1 to mark it out of date.
+    code files current, 1 to mark it out of date. -2 to ignore changes to mf.
  */
 void set_modflag(int mf, int mfc) {
   const char *basename;
@@ -1796,7 +1796,7 @@ void set_modflag(int mf, int mfc) {
     if (mfc==-1 && mf==1)
       mfc = mf;
   }
-  if (mfc!=-1) {
+  if (mfc>=0) {
     modflag_c = mfc;
   }