Add to Fl_System_Driver support for measuring time with split second resolution.

git-svn-id: file:///fltk/svn/fltk/branches/branch-1.4@12187 ea41ed52-d2ee-0310-a9c1-e6b18d33e121

FL/Fl_System_Driver.H

@@ -4,7 +4,7 @@
 // A base class for platform specific system calls
 // for the Fast Light Tool Kit (FLTK).
 //
-// Copyright 2010-2016 by Bill Spitzak and others.
+// Copyright 2010-2017 by Bill Spitzak and others.
 //
 // This library is free software. Distribution and use rights are outlined in
 // the file "COPYING" which should have been included with this file.  If this
@@ -32,6 +32,7 @@
 #include <stdlib.h>
 #include <stdarg.h>
 #include <string.h>
+#include <time.h>
 
 class Fl_File_Icon;
 class Fl_File_Browser;
@@ -210,6 +211,8 @@ public:
   virtual void remove_fd(int);
   // the default implementation of open_callback() may be enough
   virtual void open_callback(void (*)(const char *));
+  // get elapsed time since Jan 1st, 1970
+  virtual void gettime(time_t *sec, int *usec) {}
 };
 
 #endif // FL_SYSTEM_DRIVER_H

src/drivers/Posix/Fl_Posix_System_Driver.H

@@ -4,7 +4,7 @@
 // Definition of Posix system driver
 // for the Fast Light Tool Kit (FLTK).
 //
-// Copyright 2010-2016 by Bill Spitzak and others.
+// Copyright 2010-2017 by Bill Spitzak and others.
 //
 // This library is free software. Distribution and use rights are outlined in
 // the file "COPYING" which should have been included with this file.  If this
@@ -74,6 +74,7 @@ public:
   virtual int file_type(const char *filename);
   virtual const char *home_directory_name() { return ::getenv("HOME"); }
   virtual int dot_file_hidden() {return 1;}
+  virtual void gettime(time_t *sec, int *usec);
 };
 
 #endif // FL_POSIX_SYSTEM_DRIVER_H

src/drivers/Posix/Fl_Posix_System_Driver.cxx

@@ -3,7 +3,7 @@
 //
 // Definition of Apple Darwin system driver.
 //
-// Copyright 1998-2016 by Bill Spitzak and others.
+// Copyright 1998-2017 by Bill Spitzak and others.
 //
 // This library is free software. Distribution and use rights are outlined in
 // the file "COPYING" which should have been included with this file.  If this
@@ -30,6 +30,7 @@
 #endif
 #include <sys/types.h>
 #include <sys/stat.h>
+#include <sys/time.h>
 #include <pwd.h>
 #include <unistd.h>
 #include <time.h>
@@ -90,6 +91,14 @@ const char *Fl_Posix_System_Driver::getpwnam(const char *login) {
   return pwd ? pwd->pw_dir : NULL;
 }
 
+
+void Fl_Posix_System_Driver::gettime(time_t *sec, int *usec) {
+  struct timeval tv;
+  gettimeofday(&tv, NULL);
+  *sec = tv.tv_sec;
+  *usec = tv.tv_usec;
+}
+
 //
 // End of "$Id$".
 //

src/drivers/WinAPI/Fl_WinAPI_System_Driver.H

@@ -4,7 +4,7 @@
 // Definition of MSWindows system driver
 // for the Fast Light Tool Kit (FLTK).
 //
-// Copyright 2010-2016 by Bill Spitzak and others.
+// Copyright 2010-2017 by Bill Spitzak and others.
 //
 // This library is free software. Distribution and use rights are outlined in
 // the file "COPYING" which should have been included with this file.  If this
@@ -116,6 +116,7 @@ public:
   virtual void add_fd(int fd, Fl_FD_Handler cb, void* = 0);
   virtual void remove_fd(int, int when);
   virtual void remove_fd(int);
+  virtual void gettime(time_t *sec, int *usec);
 };
 
 #endif // FL_WINAPI_SYSTEM_DRIVER_H

src/drivers/WinAPI/Fl_WinAPI_System_Driver.cxx

@@ -3,7 +3,7 @@
 //
 // Definition of Apple Darwin system driver.
 //
-// Copyright 1998-2016 by Bill Spitzak and others.
+// Copyright 1998-2017 by Bill Spitzak and others.
 //
 // This library is free software. Distribution and use rights are outlined in
 // the file "COPYING" which should have been included with this file.  If this
@@ -31,6 +31,7 @@
 #include <rpc.h>
 #include <sys/types.h>
 #include <sys/stat.h>
+#include <sys/timeb.h>
 // function pointer for the UuidCreate Function
 // RPC_STATUS RPC_ENTRY UuidCreate(UUID __RPC_FAR *Uuid);
 typedef RPC_STATUS (WINAPI* uuid_func)(UUID __RPC_FAR *Uuid);
@@ -902,6 +903,13 @@ const char *Fl_WinAPI_System_Driver::home_directory_name()
   return h;
 }
 
+void Fl_WinAPI_System_Driver::gettime(time_t *sec, int *usec) {
+  struct _timeb t;
+  _ftime(&t);
+  *sec = t.time;
+  *usec = t.millitm * 1000;
+}
+
 //
 // End of "$Id$".
 //