Expose elapsed time API (#670)

1 files changed, 7 insertions, 0 deletions

diff --git a/FL/Fl.H b/FL/Fl.H
index d33ff393c..925daa591 100644
--- a/FL/Fl.H
+++ b/FL/Fl.H
@@ -470,6 +470,13 @@ public:
   static void add_check(Fl_Timeout_Handler, void* = 0);
   static int  has_check(Fl_Timeout_Handler, void* = 0);
   static void remove_check(Fl_Timeout_Handler, void* = 0);
+
+  static Fl_Timestamp now();
+  static double seconds_since(Fl_Timestamp& then);
+  static double seconds_between(Fl_Timestamp& back, Fl_Timestamp& further_back);
+  static long ticks_since(Fl_Timestamp& then);
+  static long ticks_between(Fl_Timestamp& back, Fl_Timestamp& further_back);
+
   // private
   static void run_idle();
   static void run_checks();