added "slice now" button to plater UI

lib/Slic3r/GUI/Plater.pm

@@ -190,6 +190,7 @@ sub new {
     });
 
     # right pane buttons
+    $self->{btn_slice_gcode} = Wx::Button->new($self, -1, "Slice Now…", wxDefaultPosition, [-1, 30], wxBU_LEFT);
     $self->{btn_export_gcode} = Wx::Button->new($self, -1, "Export G-code…", wxDefaultPosition, [-1, 30], wxBU_LEFT);
     $self->{btn_print} = Wx::Button->new($self, -1, "Print…", wxDefaultPosition, [-1, 30], wxBU_LEFT);
     $self->{btn_send_gcode} = Wx::Button->new($self, -1, "Send to printer", wxDefaultPosition, [-1, 30], wxBU_LEFT);
@@ -207,6 +208,7 @@ sub new {
             arrange         bricks.png
             export_gcode    cog_go.png
             print           arrow_up.png
+            slice_gcode     cog_go.png
             send_gcode      arrow_up.png
             export_stl      brick_go.png
             
@@ -225,6 +227,10 @@ sub new {
     }
     $self->selection_changed(0);
     $self->object_list_changed;
+    EVT_BUTTON($self, $self->{btn_slice_gcode}, sub {
+        $self->{send_gcode_file} = $self->export_gcode(Wx::StandardPaths::Get->GetTempDir());
+        Slic3r::thread_cleanup();
+    });
     EVT_BUTTON($self, $self->{btn_export_gcode}, sub {
         $self->export_gcode;
     });
@@ -391,6 +397,7 @@ sub new {
         $buttons_sizer->Add($self->{btn_print}, 0, wxALIGN_RIGHT, 0);
         $buttons_sizer->Add($self->{btn_send_gcode}, 0, wxALIGN_RIGHT, 0);
         $buttons_sizer->Add($self->{btn_export_gcode}, 0, wxALIGN_RIGHT, 0);
+        $buttons_sizer->Add($self->{btn_slice_gcode}, 0, wxALIGN_RIGHT, 0);
 
         my $right_sizer = Wx::BoxSizer->new(wxVERTICAL);
         $right_sizer->Add($presets, 0, wxEXPAND | wxTOP, 10) if defined $presets;