Work on journal system.

Loggable.C

@@ -28,6 +28,8 @@ FILE *Loggable::_fp;
 
 int Loggable::_log_id = 0;
 
+vector <Loggable *> Loggable::_loggables;
+
 bool
 Loggable::open ( const char *filename )
 {
@@ -56,3 +58,118 @@ Loggable::log ( const char *module, const char *action, const char *fmt, ... )
 
     fprintf( _fp, "\n" );
 }
+
+
+static
+void free_sa ( char **sa )
+{
+    char **a = sa;
+    for ( ; *a; a++ )
+        free( *a );
+
+    free( sa );
+}
+
+
+static
+void
+log_print(  char **o, char **n )
+{
+    if ( n )
+        for ( ; *n; n++ )
+            printf( "%s%s", *n, *(n + 1) ? " " : ""  );
+
+    if ( o && *o )
+    {
+        if ( n ) printf( " << " );
+        for ( ; *o; o++ )
+            printf( "%s%s", *o, *(o + 1) ? " " : ""  );
+    }
+
+    printf( "\n" );
+}
+
+/** compare elements of dumps s1 and s2, removing those elements
+    of dst which are not changed from src */
+static
+void
+log_diff (  char **sa1, char **sa2 )
+{
+    if ( ! sa1 )
+        return;
+
+    int w = 0;
+    for ( int i = 0; sa1[ i ]; ++i )
+    {
+        if ( ! strcmp( sa1[ i ], sa2[ i ] ) )
+        {
+            free( sa2[ i ] );
+            free( sa1[ i ] );
+        }
+        else
+        {
+            sa2[ w ] = sa2[ i ];
+            sa1[ w ] = sa1[ i ];
+
+            w++;
+        }
+    }
+
+    sa1[ w ] = NULL;
+    sa2[ w ] = NULL;
+}
+
+
+
+
+
+void
+Loggable::log_start ( void )
+{
+    if ( ! _old_state )
+        _old_state = log_dump();
+}
+
+void
+Loggable::log_end ( void )
+{
+    char **_new_state = log_dump();
+
+    // if ( _old_state )
+
+    log_diff( _old_state, _new_state );
+
+    printf( "%s 0x%X set ", class_name(), _id );
+
+    log_print( _old_state, _new_state );
+
+    free_sa( _old_state );
+    if ( _new_state )
+        free_sa( _new_state );
+
+    _old_state = NULL;
+}
+
+void
+Loggable::log_create ( void )
+{
+    printf( "%s 0x%X new ", class_name(), _id );
+
+    char **sa = log_dump();
+
+    log_print( NULL, sa );
+
+    free_sa( sa );
+}
+
+void
+Loggable::log_destroy ( void )
+{
+    printf( "%s 0x%X destroy ", class_name(), _id );
+
+    char **sa = log_dump();
+
+    log_print( sa, NULL );
+
+    free_sa( sa );
+}

Loggable.H

@@ -22,6 +22,12 @@
 #pragma once
 
 #include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+
+#include <vector>
+using std::vector;
 
 class Loggable
 {
@@ -29,28 +35,60 @@ class Loggable
     static FILE *_fp;
     static int _log_id;
 
+    static vector <Loggable *> _loggables;
+
 private:
     int _id;
 
+    char **_old_state;
+    char **_new_state;
+
 public:
 
     static bool open ( const char *filename );
 
+
+    static
+    Loggable *
+    find ( int id )
+        {
+            if ( id > _log_id )
+                return NULL;
+
+            return _loggables[ id ];
+        }
+
     Loggable ( )
         {
             _id = ++_log_id;
+            _old_state = NULL;
+
+            _loggables.push_back( this );
         }
 
+
     /* log messages for journal */
-    virtual void log_create ( void ) = 0;
+    virtual const char *class_name ( void ) = 0;
-    virtual void log_destroy ( void ) = 0;
+    virtual char ** log_dump ( void ) = 0;
-    virtual void log_move ( void ) = 0;
+
-    virtual void log_change ( void ) = 0;
+    /* this method must parse an array of name/value pair strings and make the appropriate changes too
+       the object state */
+    virtual void set ( char **sa ) = 0;
+//    void log ( const char *module, const char *action, const char *fmt, ... );
+
+protected:
 
     void log ( const char *module, const char *action, const char *fmt, ... );
+    void log_start ( void );
+    void log_end ( void );
+    void log_create ( void );
+    void log_destroy ( void );
 
 };
 
 #ifndef _LOGGABLE_C
 #define log( act, fmt, args... ) log( __CLASS__, act, fmt, ## args )
 #endif
+
+/* #define LOG_START Logger _logger( this ) */
+/* #define LOG_END          _logger.print( this ) */

Region.C

@@ -131,7 +131,7 @@ Region::trim ( enum trim_e t, int X )
 
             long td = timeline->x_to_ts( d );
 
-            printf( "%li %li\n", td, _end - _start );
+//            printf( "%li %li\n", td, _end - _start );
 
             if ( td >= 0 && _end - _start < td )
                 _end = _start + timeline->x_to_ts( 1 );
@@ -161,6 +161,7 @@ Region::handle ( int m )
 
     int ret;
 
+    log_start();
 
     switch ( m )
     {
@@ -178,11 +179,11 @@ Region::handle ( int m )
                     case 3:
                         trim( trimming = RIGHT, X );
                         break;
-
                     default:
                         return 0;
-
+                        break;
                 }
+
                 fl_cursor( FL_CURSOR_WE );
                 return 1;
             }
@@ -205,11 +206,13 @@ Region::handle ( int m )
                     else
                         _selected = ! _selected;
 
-                    log_change();
                     redraw();
+                    goto changed;
                 }
 
+
                 ret = Track_Widget::handle( m );
+
                 return ret | 1;
 
             }
@@ -221,9 +224,9 @@ Region::handle ( int m )
             if ( trimming != NO )
             {
                 trimming = NO;
-                log_change();
             }
-            return 1;
+            printf( "releasing\n");
+            goto changed;
         case FL_DRAG:
 
             if ( Fl::event_state() & FL_SHIFT &&
@@ -278,20 +281,20 @@ Region::handle ( int m )
                             _track->prev()->add( this );
                 }
 
-//            _track->redraw();
-
             //                  _track->damage( FL_DAMAGE_EXPOSE, x(), y(), w(), h() );
 
             ret = Track_Widget::handle( m );
             return ret | 1;
-
-
-//            _offset = timeline->x_to_ts( x() );
-
         default:
             return Track_Widget::handle( m );
             break;
     }
+
+changed:
+
+    log_end();
+    return 1;
+
 }
 
 void

Region.H

@@ -35,6 +35,8 @@ using namespace std;
 
 #include "Track_Widget.H"
 
+#include "Loggable.H"
+
 /* got I hate C++ */
 #define __CLASS__ "Region"
 
@@ -56,25 +58,56 @@ class Region : public Track_Widget
 
 protected:
 
-    /* general */
+    const char *class_name ( void ) { return "Region"; }
-    void log_create ( void )
+
+    char ** log_dump ( void )
         {
-            log( "create", "%lu \"%s\" %d %f %lu %lu", _offset, _clip->name(), _selected, _scale, _start, _end );
+            //          char *r;
+            char **sa = (char**)malloc( sizeof( char* ) * 6 );
+
+            sa[5] = NULL;
+
+            asprintf( &sa[0], ":x %lu", _offset );
+            asprintf( &sa[1], ":l %lu", _start );
+            asprintf( &sa[2], ":r %lu", _end );
+            asprintf( &sa[3], ":selected %d", _selected );
+            asprintf( &sa[4], ":gain %f", _scale );
+
+//            asprintf( &r, ":x %lu\n:l %lu\n:r %lu\n:selected %d\n:gain %f", _offset, _start, _end, _selected, _scale );
+
+            return sa;
         }
 
-    void log_destroy ( void )
+    void
+    set ( char **sa )
         {
-            log( "destroy", NULL );
+            for ( int i = 0; sa[i]; ++i )
-        }
+            {
+                char *s = sa[i];
 
-    void log_move ( void )
+                strtok( s, " " );
-        {
-            log( "move", "%lu", _offset );
-        }
 
-    void log_change ( void )
+                char *v = s + strlen( s );
-        {
+
-            log( "change", "%d %f %lu %lu", _selected, _scale, _start, _end );
+                if ( ! strcmp( s, ":x" ) )
+                    _offset = atol( v );
+                else
+                    if ( ! strcmp( s, ":l" ) )
+                        _start = atol( v );
+                    else
+                        if ( ! strcmp( s, ":r" ) )
+                            _end = atol( v );
+                        else
+                            if ( ! strcmp( s, ":selected" ) )
+                                _selected = atoi( v );
+                            else
+                                if ( ! strcmp( s, ":gain" ) )
+                                    _scale = atof( v );
+
+                free( s );
+            }
+
+            free( sa );
         }
 
 public:

Tempo_Point.H

@@ -38,6 +38,8 @@ class Tempo_Point : public Track_Point
 
 protected:
 
+    const char *class_name ( void ) { return "Tempo_Point"; }
+
     void log_create ( void )  { log( "create", "%lu %f", _offset, _tempo ); }
     void log_destroy ( void ) { log( "destroy", NULL ); }
     void log_move ( void )    { log( "move", "%lu", _offset ); }

Time_Point.H

@@ -52,6 +52,8 @@ class Time_Point : public Track_Point
 
 protected:
 
+    const char *class_name ( void ) { return "Time_Point"; }
+
     void log_create ( void )  { log( "create", "%lu %d %d", _offset, _time.beats_per_bar, _time.note_type ); }
     void log_destroy ( void ) { log( "destroy", NULL ); }
     void log_move ( void )    { log( "move", "%lu", _offset ); }

Track.C

@@ -73,7 +73,6 @@ Track::remove ( Track_Widget *r )
 Track_Widget *
 Track::event_widget ( void )
 {
-// FIXME: doesn't handle overlap!
     int ets = timeline->xoffset + timeline->x_to_ts( Fl::event_x() );
     for ( list <Track_Widget *>::const_reverse_iterator r = _widgets.rbegin();  r != _widgets.rend(); r++ )
         if ( ets > (*r)->offset() && ets < (*r)->offset() + (*r)->length() )
@@ -146,7 +145,7 @@ done:
 int
 Track::handle ( int m )
 {
-    static Track_Widget *current_widget;
+    static Track_Widget *pushed;
 
     switch ( m )
     {
@@ -155,27 +154,24 @@ Track::handle ( int m )
             return 1;
         default:
         {
-            Track_Widget *r = event_widget();
+            Track_Widget *r = pushed ? pushed : event_widget();
-            if ( current_widget )
-                r = current_widget;
 
             if ( r )
             {
                 int retval = r->handle( m );
 
                 if ( retval && m == FL_PUSH )
-                    current_widget = r;
+                    pushed = r;
 
                 if ( retval && m == FL_RELEASE )
-                    current_widget = NULL;
+                    pushed = NULL;
 
                 if ( _queued_widget )
                 {
                     remove( _queued_widget );
                     delete _queued_widget;
                     _queued_widget = NULL;
-                    current_widget = NULL;
+                    pushed = NULL;
-//                    redraw();
                 }
 
                 return retval;

Track_Point.H

@@ -28,6 +28,14 @@ protected:
 
     char *_label;
 
+    void set ( char **a )
+        {
+        }
+
+    char ** log_dump ( void )
+        {
+            return NULL;
+        }
     void log_change ( void )
         {
         }

Track_Widget.H

@@ -206,6 +206,12 @@ public:
 
             switch ( m )
             {
+                case FL_ENTER:
+                    fl_cursor( FL_CURSOR_HAND );
+                    return 1;
+                case FL_LEAVE:
+                    fl_cursor( FL_CURSOR_DEFAULT );
+                    return 1;
                 case FL_PUSH:
                 {
                     ox = x() - X;
@@ -226,7 +232,7 @@ public:
                 case FL_RELEASE:
                     if ( moved )
                     {
-                        log_move();
+//                        log_move();
                         moved = false;
                     }
 //                    dump();