Allow the user to add/edit tempo points.

Timeline/TLE.fl

@@ -34,7 +34,7 @@ decl {\#include <FL/Fl.H>} {}
 decl {extern char *user_config_dir;} {global
 } 
 
-class TLE {open
+class TLE {open selected
 } {
   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 {open
+      Fl_Menu_Bar menubar {
         xywh {0 0 1024 25}
       } {
         Submenu {} {
@@ -158,7 +158,7 @@ Loggable::compact();}
 
 printf( "dropped %d buffers\\n", engine->dropped() );
 
-exit( 0 );} selected
+exit( 0 );}
             xywh {40 40 40 25} shortcut 0x40071
           }
         }

Timeline/Tempo_Point.C

@@ -72,9 +72,18 @@ Tempo_Point::~Tempo_Point ( )
 }
 
 
+
 int
 Tempo_Point::handle ( int m )
 {
+    if ( m == FL_PUSH && Fl::event_button3() && ! ( Fl::event_state() & ( FL_ALT | FL_CTRL | FL_SHIFT ) ) )
+    {
+        float t = _tempo;
+        edit( &t );
+        tempo( t );
+        return 0;
+    }
+
     int r = Sequence_Widget::handle( m );
 
     if ( m == FL_RELEASE )
@@ -84,3 +93,73 @@ Tempo_Point::handle ( int m )
     }
     return r;
 }
+
+
+#include <FL/Fl_Float_Input.H>
+#include <FL/Fl_Menu_Window.H>
+
+
+class Tempo_Point_Editor : public Fl_Menu_Window
+{
+
+    float *_tempo;
+    Fl_Float_Input *_fi;
+
+    bool _sucess;
+
+public:
+
+    Tempo_Point_Editor ( int X, int Y, float *tempo ) : Fl_Menu_Window( X, Y, 75, 58, "Edit Tempo" )
+        {
+            _sucess = false;
+            _tempo = tempo;
+
+            set_modal();
+
+            Fl_Float_Input *fi = _fi = new Fl_Float_Input( 12, 0 + 24, 50, 24, "Tempo:" );
+            fi->align( FL_ALIGN_TOP );
+            fi->when( FL_WHEN_ENTER_KEY );
+            fi->callback( &Tempo_Point_Editor::enter_cb, (void*)this );
+
+            char pat[10];
+            snprintf( pat, sizeof( pat ), "%.1f", *tempo );
+
+            fi->value( pat );
+
+            end();
+
+            show();
+
+            while ( shown() )
+                Fl::wait();
+        }
+
+    static void
+    enter_cb ( Fl_Widget *w, void *v )
+        {
+            ((Tempo_Point_Editor*)v)->enter_cb();
+        }
+
+    void
+    enter_cb ( void )
+        {
+            sscanf( _fi->value(), "%f", _tempo );
+            _sucess = true;
+            hide();
+        }
+
+    bool
+    sucess ( void )
+        {
+            return _sucess;
+        }
+};
+
+
+bool
+Tempo_Point::edit ( float *tempo )
+{
+    Tempo_Point_Editor ti( Fl::event_x(), Fl::event_y(), tempo );
+
+    return ti.sucess();
+}

Timeline/Tempo_Point.H

@@ -48,6 +48,8 @@ protected:
 
 public:
 
+    static bool edit ( float *tempo );
+
     LOG_CREATE_FUNC( Tempo_Point );
 
     Tempo_Point ( nframes_t when, float bpm );
@@ -69,7 +71,7 @@ public:
     float tempo ( void ) const
         { return _tempo; }
     void  tempo ( float v )
-        { _tempo = v; }
+        { if ( v != _tempo ) { _tempo = v; _make_label(); timeline->redraw(); } }
 
     int handle ( int m );
 };

Timeline/Tempo_Sequence.H

@@ -69,4 +69,33 @@ public:
             sort();
         }
 
+    int
+    handle ( int m )
+        {
+            int r = Sequence::handle( m );
+
+            if ( r )
+                return r;
+
+            switch ( m )
+            {
+                case FL_PUSH:
+                    if ( Fl::event_button1() )
+                    {
+                        static float t = 120.0f;
+
+                        if ( Tempo_Point::edit( &t ) )
+                        {
+                            add( new Tempo_Point( timeline->x_to_offset( Fl::event_x() ), t ) );
+
+                            timeline->redraw();
+                        }
+                        return 0;
+                    }
+                default:
+                    return 0;
+
+            }
+
+        }
 };