Make snap type configurable.

Timeline/TLE.fl

@@ -36,7 +36,7 @@ decl {extern char *user_config_dir;} {global
 
 class TLE {open
 } {
-  decl {Fl_Color system_colors[3];} {selected public
+  decl {Fl_Color system_colors[3];} {public
   }
   decl {static void menubar_cb ( void *v )} {}
   decl {void menubar_cb ( void )} {}
@@ -252,14 +252,17 @@ exit( 0 );}
           } {
             MenuItem {} {
               label Bars
+              callback {Timeline::snap_to = Timeline::Bars;} selected
               xywh {0 0 40 25} type Radio value 1
             }
             MenuItem {} {
               label Beats
+              callback {Timeline::snap_to = Timeline::Beats;}
               xywh {10 10 40 25} type Radio
             }
             MenuItem {} {
               label Off
+              callback {Timeline::snap_to = Timeline::None;}
               xywh {20 20 40 25} type Radio
             }
           }

Timeline/Timeline.C

@@ -32,6 +32,7 @@
 #include "Track.H"
 
 bool Timeline::draw_with_measure_lines = true;
+Timeline::snap_e Timeline::snap_to = Bars;
 
 const float UPDATE_FREQ = 0.02f;
 
@@ -240,14 +241,31 @@ Timeline::bbt ( nframes_t when )
 int
 Timeline::nearest_line ( int ix )
 {
+    if ( snap_to == None )
+        return -1;
+
     for ( int x = ix - 10; x < ix + 10; ++x )
     {
         const int measure = ts_to_x( (double)(_sample_rate * 60) / beats_per_minute( x_to_ts( x - Track::width() ) + xoffset ));
 
-//        const int abs_x = ts_to_x( xoffset ) + x;
+//        const int abs_x = ts_to_x( xoffset ) + x - Track::width();
+
+        const int abs_x = ts_to_x( xoffset ) + x;
+
+        int bpb = beats_per_bar( x_to_ts( x -Track::width() ) + xoffset );
 
         if ( 0 == x % measure )
-            return x;
+        {
+            if ( snap_to == Bars )
+            {
+                if ( 0 == (abs_x / measure) % bpb )
+                    return x;
+            }
+            else if ( snap_to == Beats )
+            {
+                return x;
+            }
+        }
     }
 
     return -1;

Timeline/Timeline.H

@@ -86,12 +86,6 @@ class Timeline : public Fl_Overlay_Window, public RWLock
 
     Rectangle _selection;
 
-    enum snap_flags_e {
-        SNAP_TO_REGION,
-        SNAP_TO_BAR,
-        SNAP_TO_BEAT
-    } snap_to;
-
     Fl_Scroll    *scroll;
     Fl_Pack      *tracks;
     Fl_Pack      *rulers;
@@ -112,7 +106,14 @@ class Timeline : public Fl_Overlay_Window, public RWLock
 
 public:
 
+    enum snap_e {
+        Bars,
+        Beats,
+        None
+    };
+
     static bool draw_with_measure_lines;
+    static snap_e snap_to;
 
     Tempo_Sequence *tempo_track;
     Time_Sequence  *time_track;