New perl callback to force reloading of 3d scene after Purging volumes are changed

After the changes in previous commit, the 3D scene must be reloaded after the wipe tower
is invalidated. This can mostly be done on the C++ side, but reloading after Purging volumes
are changed required this C++ -> Perl call

4 files changed, 25 insertions, 0 deletions

diff --git a/lib/Slic3r/GUI/Plater.pm b/lib/Slic3r/GUI/Plater.pm
index 719f98a48..3bfd57bb3 100644
--- a/lib/Slic3r/GUI/Plater.pm
+++ b/lib/Slic3r/GUI/Plater.pm
@@ -144,6 +144,11 @@ sub new {
         my ($angle_z) = @_;
         $self->rotate(rad2deg($angle_z), Z, 'absolute');
     };
+
+    # callback to call schedule_background_process
+    my $on_request_update = sub {
+        $self->schedule_background_process;
+    };
     
     # callback to update object's geometry info while using gizmos
     my $on_update_geometry_info = sub {
@@ -202,6 +207,8 @@ sub new {
 
         Slic3r::GUI::_3DScene::register_on_viewport_changed_callback($self->{canvas3D}, sub { Slic3r::GUI::_3DScene::set_viewport_from_scene($self->{preview3D}->canvas, $self->{canvas3D}); });
     }
+
+    Slic3r::_GUI::register_on_request_update_callback($on_request_update);
     
     # Initialize 2D preview canvas
     $self->{canvas} = Slic3r::GUI::Plater::2D->new($self->{preview_notebook}, wxDefaultSize, $self->{objects}, $self->{model}, $self->{config});
diff --git a/xs/src/slic3r/GUI/GUI.cpp b/xs/src/slic3r/GUI/GUI.cpp
index af7022f2b..8e351b05f 100644
--- a/xs/src/slic3r/GUI/GUI.cpp
+++ b/xs/src/slic3r/GUI/GUI.cpp
@@ -901,6 +901,7 @@ void add_frequently_changed_parameters(wxWindow* parent, wxBoxSizer* sizer, wxFl
                     std::vector<float> extruders = dlg.get_extruders();
                     (config.option<ConfigOptionFloats>("wiping_volumes_matrix"))->values = std::vector<double>(matrix.begin(),matrix.end());
                     (config.option<ConfigOptionFloats>("wiping_volumes_extruders"))->values = std::vector<double>(extruders.begin(),extruders.end());
+                    g_on_request_update_callback.call();
                 }
 			}));
 			return sizer;
@@ -917,6 +918,10 @@ ConfigOptionsGroup* get_optgroup()
 	return m_optgroup.get();
 }
 
+void register_on_request_update_callback(void* callback) {
+    if (callback != nullptr)
+        g_on_request_update_callback.register_callback(callback);
+}
 
 wxButton* get_wiping_dialog_button()
 {
diff --git a/xs/src/slic3r/GUI/GUI.hpp b/xs/src/slic3r/GUI/GUI.hpp
index efb11b7df..c41ba2521 100644
--- a/xs/src/slic3r/GUI/GUI.hpp
+++ b/xs/src/slic3r/GUI/GUI.hpp
@@ -4,6 +4,7 @@
 #include <string>
 #include <vector>
 #include "Config.hpp"
+#include "../../libslic3r/Utils.hpp"
 
 #include <wx/intl.h>
 #include <wx/string.h>
@@ -171,6 +172,9 @@ wxString	from_u8(const std::string &str);
 
 void add_frequently_changed_parameters(wxWindow* parent, wxBoxSizer* sizer, wxFlexGridSizer* preset_sizer);
 
+static PerlCallback g_on_request_update_callback;
+void register_on_request_update_callback(void* callback);
+ 
 ConfigOptionsGroup* get_optgroup();
 wxButton*			get_wiping_dialog_button();
 
diff --git a/xs/xsp/GUI.xsp b/xs/xsp/GUI.xsp
index 6b05e9a67..7872abc80 100644
--- a/xs/xsp/GUI.xsp
+++ b/xs/xsp/GUI.xsp
@@ -104,3 +104,12 @@ void fix_model_by_win10_sdk_gui(ModelObject *model_object_src, Print *print, Mod
 
 void set_3DScene(SV *scene)
     %code%{ Slic3r::GUI::set_3DScene((_3DScene *)wxPli_sv_2_object(aTHX_ scene, "Slic3r::Model::3DScene") ); %};
+
+%package{Slic3r::_GUI};
+%{
+void
+register_on_request_update_callback(callback)
+        SV *callback;
+    CODE:
+        Slic3r::GUI::register_on_request_update_callback((void*)callback);
+%}