Mixer: Implement mixer Strip import/export

FL/Fl_Sometimes_Input.H

@@ -38,7 +38,7 @@ public:
         {
             clear_visible_focus();
             up_box( FL_NO_BOX );
-            when(FL_WHEN_ENTER_KEY);
+            when(FL_WHEN_ENTER_KEY_ALWAYS);
         }
 
     void up_box ( Fl_Boxtype b ) { _up_box = b;  }

mixer/src/Chain.C

@@ -734,6 +734,33 @@ Chain::resize ( int X, int Y, int W, int H )
 
 
 
+/*****************/
+/* Import/Export */
+/*****************/
+
+void
+Chain::snapshot ( void *v )
+{
+    ((Chain*)v)->snapshot();
+}
+
+void
+Chain::snapshot ( void )
+{
+    log_children();
+}
+
+bool
+Chain::do_export ( const char *filename )
+{
+    MESSAGE( "Exporting chain state" );
+    Loggable::snapshot_callback( &Chain::snapshot, this );
+    Loggable::snapshot( filename );
+    return true;
+}
+
+
+
 /**********/
 /* Engine */
 /**********/

mixer/src/Chain.H

@@ -57,6 +57,9 @@ class Chain : public Fl_Group, public Loggable {
 
 private:
 
+    static void snapshot ( void *v );
+    void snapshot ( void );
+
     void cb_handle(Fl_Widget*);
     static void cb_handle(Fl_Widget*, void*);
 
@@ -104,6 +107,8 @@ public:
     bool insert ( Module *m, Module *n );
     void add_control ( Controller_Module *m );
 
+    bool do_export ( const char *filename );
+
     void initialize_with_default ( void );
 
     bool can_configure_outputs ( Module *m, int n ) const;

mixer/src/Mixer.C

@@ -251,6 +251,16 @@ void Mixer::cb_menu(Fl_Widget* o) {
                 command_add_strip();
         }
     }
+    else if ( !strcmp( picked, "&Mixer/&Import Strip" ) )
+    {
+        const char *s = fl_file_chooser( "Export strip to filename:", "*.strip", NULL, 0 );
+
+        if ( s )
+        {
+            if (! Mixer_Strip::import_strip( s ) )
+                fl_alert( "%s", "Failed to import strip!" );
+        }
+    }
     else if (! strcmp( picked, "&Mixer/&Rows/One") )
     {
         rows( 1 );
@@ -382,6 +392,7 @@ Mixer::Mixer ( int X, int Y, int W, int H, const char *L ) :
         o->add( "&Project/&Quit", FL_CTRL + 'q', 0, 0 );
         o->add( "&Mixer/&Add Strip", 'a', 0, 0 );
         o->add( "&Mixer/Add &N Strips" );
+        o->add( "&Mixer/&Import Strip" );
         o->add( "&Mixer/&Rows/One", '1', 0, 0 );
         o->add( "&Mixer/&Rows/Two", '2', 0, 0 );
         o->add( "&Mixer/&Rows/Three", '3', 0, 0 );

mixer/src/Mixer.H

@@ -47,7 +47,6 @@ private:
     Fl_Color system_colors[3];
 
     Mixer_Strip* track_by_name ( const char *name );
-    char * get_unique_track_name ( const char *name );
 
     void snapshot ( void );
     static void snapshot ( void *v ) { ((Mixer*)v)->snapshot(); }
@@ -74,6 +73,8 @@ protected:
 
 public:
 
+    char * get_unique_track_name ( const char *name );
+
     int min_h ( void ) const { return Mixer_Strip::min_h() + (18 * 2); }
 
     void rows ( int n );

mixer/src/Mixer_Strip.C

@@ -56,6 +56,7 @@
 #include <FL/Fl_Menu_Button.H>
 #include "FL/test_press.H"
 #include "FL/menu_popup.H"
+#include <FL/Fl_File_Chooser.H>
 
 extern Mixer *mixer;
 
@@ -242,7 +243,7 @@ void Mixer_Strip::cb_handle(Fl_Widget* o) {
     else if ( o == name_field )
     {
         name( name_field->value() );
-        take_focus();
+        Fl::focus( this );
     }
     else if ( o == width_button )
     {
@@ -261,8 +262,12 @@ void Mixer_Strip::cb_handle(Fl_Widget* o, void* v) {
 }
 
 void
-Mixer_Strip::name ( const char *name ) {
+Mixer_Strip::name ( const char *name )
+{
+    if ( this->name() && !strcmp( name, this->name() ) )
+        return;
 
+    name = mixer->get_unique_track_name( name );
 
     char *s = strdup( name );
 
@@ -521,6 +526,43 @@ Mixer_Strip::draw ( void )
     Fl_Group::draw_box( FL_UP_FRAME, x(), y(), w(), h(), Fl::focus() == this ? Fl_Group::selection_color() : FL_BLACK );
 }
 
+/*****************/
+/* Import/Export */
+/*****************/
+
+void
+Mixer_Strip::snapshot ( void *v )
+{
+    ((Mixer_Strip*)v)->snapshot();
+}
+
+void
+Mixer_Strip::snapshot ( void )
+{
+    log_children();
+}
+
+bool
+Mixer_Strip::export_strip ( const char *filename )
+{
+    MESSAGE( "Exporting chain state" );
+    Loggable::snapshot_callback( &Mixer_Strip::snapshot, this );
+    Loggable::snapshot( filename );
+    return true;
+}
+
+bool
+Mixer_Strip::import_strip ( const char *filename )
+{
+    MESSAGE( "Importing new chain state" );
+    Loggable::begin_relative_id_mode();
+    int r = Loggable::replay( filename );
+    Loggable::end_relative_id_mode();
+    return r;
+}
+
+
+
 
 
 void
@@ -559,6 +601,20 @@ Mixer_Strip::menu_cb ( const Fl_Menu_ *m )
 
         redraw();
     }
+    else if ( !strcmp( picked, "/Export Strip" ) )
+    {
+        char *suggested_name;
+        asprintf( &suggested_name, "%s.strip", name() );
+
+        const char *s = fl_file_chooser( "Export strip to filename:", "*.strip", suggested_name, 0 );
+
+        free( suggested_name );
+
+        if ( s )
+            export_strip( s );
+
+        fl_message( "Strip exported." );
+    }
     else if ( ! strcmp( picked, "/Remove" ) )
     {
         if ( Fl::event_shift() || 1 == fl_choice( "Are you sure you want to remove this strip?\n\n(this action cannot be undone)", "Cancel", "Remove", NULL ) )
@@ -598,6 +654,7 @@ Mixer_Strip::menu ( void ) const
             { "Move Left",      '[', 0, 0  },
             { "Move Right",     ']', 0, 0 },
             { "Color",           0, 0, 0 },
+            { "Export Strip",           0, 0, 0 },
             { "Rename",          FL_CTRL + 'n', 0, 0 },
             { "Remove",          FL_Delete, 0, 0 },
             { 0 },

mixer/src/Mixer_Strip.H

@@ -125,6 +125,10 @@ private:
     static void menu_cb ( Fl_Widget *w, void *v );
     Fl_Menu_Button & menu ( void ) const;
 
+    static void snapshot ( void *v );
+    void snapshot ( void );
+    bool export_strip ( const char *filename );
+
 protected:
 
     void get ( Log_Entry &e ) const;
@@ -135,6 +139,8 @@ protected:
 
 public:
 
+    static bool import_strip ( const char *filename );
+
     void command_move_left ( void );
     void command_move_right ( void );
     void command_close ( void );

nonlib/Loggable.C

@@ -88,6 +88,9 @@ Loggable::block_end ( void )
 Loggable *
 Loggable::find ( unsigned int id )
 {
+    if ( _relative_id )
+        id += _relative_id;
+
     return _loggables[ id ].loggable;
 }
 
@@ -329,6 +332,25 @@ Loggable::escape ( const char *s )
     return r;
 }
 
+unsigned int Loggable::_relative_id = 0;
+
+/* calls to do_this() between invocation of this method and
+ * end_relative_id_mode() will have all their IDs made relative to the
+ * highest available ID at this time of this call. Non-Mixer uses
+ * this to allow importing of module chains */
+void
+Loggable::begin_relative_id_mode ( void )
+{
+    _relative_id = ++_log_id;
+}
+
+void
+Loggable::end_relative_id_mode ( void )
+{
+    _relative_id = 0;
+}
+
+
 /** 'do' a message like "Audio_Region 0xF1 set :r 123" */
 bool
 Loggable::do_this ( const char *s, bool reverse )
@@ -395,6 +417,9 @@ Loggable::do_this ( const char *s, bool reverse )
         ASSERT( _class_map[ std::string( classname ) ], "Journal contains an object of class \"%s\", but I don't know how to create such objects.", classname );
 
         {
+            if ( _relative_id )
+                id += _relative_id;
+
             /* create */
             Loggable *l = _class_map[ std::string( classname ) ]( e, id );
             l->log_create();

nonlib/Loggable.H

@@ -89,6 +89,8 @@ class Loggable
 
 private:
 
+    static unsigned int _relative_id;
+
     unsigned int _id;
 
     Log_Entry *_old_state;
@@ -183,6 +185,10 @@ public:
 
     virtual void log_children ( void ) const { return; }
 
+    static void begin_relative_id_mode ( void );
+    
+    static void end_relative_id_mode ( void );
+
     static bool do_this ( const char *s, bool reverse );
 
     static int dirty ( void ) { return _dirty; }