added total cost/weight to Extruder statistics, mocked up addendum to status bar change.

lib/Slic3r/GUI/Plater.pm

@@ -1343,6 +1343,7 @@ sub on_export_completed {
         } else {
             $message = "G-code file exported to " . $self->{export_gcode_output_file};
         }
+        $message .= sprintf(" Cost: %.2f" , $self->{print}->total_cost);
     } else {
         $message = "Export failed";
     }

lib/Slic3r/Print/GCode.pm

@@ -321,8 +321,8 @@ sub export {
     $self->print->clear_filament_stats;
     $self->print->total_used_filament(0);
     $self->print->total_extruded_volume(0);
-    my $total_filament_weight = 0.0;
-    my $total_filament_cost = 0.0;
+    $self->print->total_weight(0);
+    $self->print->total_cost(0);
     foreach my $extruder (@{$gcodegen->writer->extruders}) {
         my $used_filament = $extruder->used_filament;
         my $extruded_volume = $extruder->extruded_volume;
@@ -333,11 +333,11 @@ sub export {
         printf $fh "; filament used = %.1fmm (%.1fcm3)\n",
             $used_filament, $extruded_volume/1000;
         if ($filament_weight > 0) {
-            $total_filament_weight += $filament_weight;
+            $self->print->total_weight($self->print->total_weight + $filament_weight);
             printf $fh "; filament used = %.1fg\n",
                    $filament_weight;
             if ($filament_cost > 0) {
-                $total_filament_cost += $filament_cost;
+                $self->print->total_cost($self->print->total_cost + $filament_cost);
                 printf $fh "; filament cost = %.1f\n",
                        $filament_cost;
             }
@@ -347,7 +347,7 @@ sub export {
         $self->print->total_extruded_volume($self->print->total_extruded_volume + $extruded_volume);
     }
     printf $fh "; total filament cost = %.1f\n",
-           $total_filament_cost;
+           $self->print->total_cost;
     
     # append full config
     print $fh "\n";

lib/Slic3r/Print/Object.pm

@@ -268,6 +268,8 @@ sub generate_support_material {
     }
     
     $self->set_step_done(STEP_SUPPORTMATERIAL);
+    my $stats = "Weight: %.1fg, Cost: %.1f" , $self->print->total_weight, $self->print->total_cost;
+    $self->print->status_cb->(85, $stats);
 }
 
 # Idempotence of this method is guaranteed by the fact that we don't remove things from

xs/src/libslic3r/Print.hpp

@@ -192,7 +192,7 @@ class Print
     PrintRegionPtrs regions;
     PlaceholderParser placeholder_parser;
     // TODO: status_cb
-    double total_used_filament, total_extruded_volume;
+    double total_used_filament, total_extruded_volume, total_cost, total_weight;
     std::map<size_t,float> filament_stats;
     PrintState<PrintStep> state;
 

xs/xsp/Print.xsp

@@ -276,5 +276,26 @@ Print::total_extruded_volume(...)
     OUTPUT:
         RETVAL
 
+
+double
+Print::total_weight(...)
+    CODE:
+        if (items > 1) {
+            THIS->total_weight = (double)SvNV(ST(1));
+        }
+        RETVAL = THIS->total_weight;
+    OUTPUT:
+        RETVAL
+
+double
+Print::total_cost(...)
+    CODE:
+        if (items > 1) {
+            THIS->total_cost = (double)SvNV(ST(1));
+        }
+        RETVAL = THIS->total_cost;
+    OUTPUT:
+        RETVAL
+
 %}
 };