Make zoom-fit menu item work.

Timeline/TLE.fl

@@ -34,7 +34,7 @@ decl {\#include <FL/Fl.H>} {}
 decl {extern char *user_config_dir;} {global
 } 
 
-class TLE {open selected
+class TLE {open
 } {
   decl {Fl_Color system_colors[3];} {public
   }
@@ -114,7 +114,7 @@ free( path );} {}
       label {Non-DAW - Timeline} open
       xywh {577 94 1024 768} type Double resizable xclass {Non-DAW} visible
     } {
-      Fl_Menu_Bar menubar {
+      Fl_Menu_Bar menubar {open
         xywh {0 0 1024 25}
       } {
         Submenu {} {
@@ -227,6 +227,7 @@ exit( 0 );}
             }
             MenuItem {} {
               label {&Fit}
+              callback {timeline->zoom_fit();} selected
               xywh {10 10 40 25} divider
             }
             MenuItem {} {

Timeline/Timeline.C

@@ -1073,6 +1073,12 @@ Timeline::zoom ( float secs )
     redraw();
 }
 
+void
+Timeline::zoom_fit ( void )
+{
+    zoom( _length / (float)sample_rate() );
+}
+
 Track *
 Timeline::track_by_name ( const char *name )
 {

Timeline/Timeline.H

@@ -181,7 +181,7 @@ public:
     void zoom ( float secs );
     void zoom_in ( void );
     void zoom_out ( void );
-
+    void zoom_fit ( void );
 
 
 private: