Wayland: fix interactive moving and resizing of a subwindow - cont'd (#987)

This fix requires to be able to recognize whether Fl_Wayland_Window_Driver::resize() is called
by a resize operation of an encompassing widget or not.
To do that, private static int variable group_resize_depth_ is added to class Fl_Group
and an accessor to this variable is added to class Fl_Window_Driver.

1 files changed, 1 insertions, 0 deletions

diff --git a/src/Fl_Window_Driver.H b/src/Fl_Window_Driver.H
index cec60a2da..9df4c99e8 100644
--- a/src/Fl_Window_Driver.H
+++ b/src/Fl_Window_Driver.H
@@ -58,6 +58,7 @@ private:
 protected:
   Fl_Window *pWindow;
   int screen_num_; // number of screen where window is mapped
+  static int group_resize_depth() { return Fl_Group::group_resize_depth_; }
 public:
   Fl_Window_Driver(Fl_Window *);
   virtual ~Fl_Window_Driver();