Show transport timebase state on status line.

Since there doesn't appear to be anything in the JACK API to either
examine the current timebase master, or inform the master that it has
been relieved, it will still require some timing hackery in order to
display "slave" when another client forcefully takes over as timebase
master.

gui/ui.fl

@@ -94,7 +94,9 @@ if ( transport.rolling )
 	if ( ui->tabs->value() == ui->phrase_tab )
 		ui->phrase_canvas_widget->draw_playhead();
 
-}} {}
+}
+
+ui->transport_state->do_callback();} {}
 } 
 
 class UI {open
@@ -955,8 +957,31 @@ else
           }
         }
       }
-      Fl_Output status {
-        xywh {0 776 869 25} box UP_BOX color 32 labeltype NO_LABEL textcolor 55
+      Fl_Group {} {open
+        xywh {-1 772 869 33}
+      } {
+        Fl_Output status {
+          xywh {-1 776 783 25} box UP_BOX color 32 labeltype NO_LABEL textcolor 55 resizable
+        }
+        Fl_Box transport_state {
+          label state
+          callback {const char *s = "INVALID";
+
+if ( transport.master )
+	s = "Master";
+else if ( transport.valid )
+	s = "Slave";
+
+if ( s != o->label() )
+{
+	o->label( s );
+	if ( ! strcmp( s, "INVALID" ) )
+		o->color( FL_RED );
+	else
+		o->color( FL_GREEN );
+}} selected
+          xywh {781 776 87 25} box UP_BOX
+        }
       }
     }
   }
@@ -1473,8 +1498,7 @@ _c->signal_draw.connect( sigc::mem_fun( this, &O_Canvas::draw_notes ) );
 _c->signal_resize.connect( sigc::mem_fun( this, &O_Canvas::clear ) );
 
 _c->signal_settings_change.connect( sigc::ptr_fun( &UI::update_canvas_widgets ) );
-_c->signal_settings_change.connect( sigc::mem_fun( song, &song_settings::set_dirty ) );} {selected
-    }
+_c->signal_settings_change.connect( sigc::mem_fun( song, &song_settings::set_dirty ) );} {}
   }
   Function {click_to_focus()} {open return_type bool
   } {
@@ -1647,10 +1671,10 @@ return r;} {}
 } 
 
 widget_class Triggers {open
-  xywh {397 42 1278 1003} type Double resizable
+  xywh {335 80 1278 1003} type Double hide resizable
   code0 {populate();}
   code1 {\#include <Fl/Fl_Dial.H>}
-  class Fl_Group visible
+  class Fl_Group
 } {
   Fl_Pack rows {open
     xywh {25 25 15 15}