InstancesHider allows to show/hide supports on demand

src/slic3r/GUI/Gizmos/GLGizmoHollow.cpp

@@ -54,6 +54,9 @@ bool GLGizmoHollow::on_init()
 
 void GLGizmoHollow::set_sla_support_data(ModelObject*, const Selection&)
 {
+    if (! m_c->selection_info())
+        return;
+
     const ModelObject* mo = m_c->selection_info()->model_object();
     if (mo) {
         reload_cache();
@@ -857,11 +860,12 @@ RENDER_AGAIN:
         m_c->object_clipper()->set_position(clp_dist, true);
 
     // make sure supports are shown/hidden as appropriate
-    // DODELAT
+    bool show_sups = m_c->instances_hider()->are_supports_shown();
-    //if (m_imgui->checkbox(m_desc["show_supports"], m_show_supports)) {
+    if (m_imgui->checkbox(m_desc["show_supports"], show_sups)) {
-    //    m_parent.toggle_sla_auxiliaries_visibility(m_show_supports, mo, m_c->m_active_instance);
+        //    m_parent.toggle_sla_auxiliaries_visibility(m_show_supports, mo, m_c->m_active_instance);
-    //    force_refresh = true;
+        m_c->instances_hider()->show_supports(show_sups);
-    //}
+        force_refresh = true;
+    }
 
     m_imgui->end();
 

src/slic3r/GUI/Gizmos/GLGizmoHollow.hpp

@@ -50,7 +50,7 @@ private:
     void hollow_mesh(bool postpone_error_messages = false);
     bool unsaved_changes() const;
 
-    bool  m_show_supports = true;
+    // bool  m_show_supports = true;
     float m_new_hole_radius = 2.f;        // Size of a new hole.
     float m_new_hole_height = 6.f;
     mutable std::vector<bool> m_selected; // which holes are currently selected

src/slic3r/GUI/Gizmos/GLGizmosCommon.cpp

@@ -48,6 +48,14 @@ SelectionInfo* CommonGizmosDataPool::selection_info() const
     return sel_info->is_valid() ? sel_info : nullptr;
 }
 
+
+InstancesHider* CommonGizmosDataPool::instances_hider() const
+{
+    InstancesHider* inst_hider = dynamic_cast<InstancesHider*>(m_data.at(CommonGizmosDataID::InstancesHider).get());
+    assert(inst_hider);
+    return inst_hider->is_valid() ? inst_hider : nullptr;
+}
+
 HollowedMesh* CommonGizmosDataPool::hollowed_mesh() const
 {
     HollowedMesh* hol_mesh = dynamic_cast<HollowedMesh*>(m_data.at(CommonGizmosDataID::HollowedMesh).get());
@@ -130,6 +138,7 @@ void InstancesHider::on_update()
     if (mo && active_inst != -1) {
         canvas->toggle_model_objects_visibility(false);
         canvas->toggle_model_objects_visibility(true, mo, active_inst);
+        canvas->toggle_sla_auxiliaries_visibility(m_show_supports, mo, active_inst);
     }
     else
         canvas->toggle_model_objects_visibility(true);
@@ -140,6 +149,13 @@ void InstancesHider::on_release()
     get_pool()->get_canvas()->toggle_model_objects_visibility(true);
 }
 
+void InstancesHider::show_supports(bool show) {
+    if (m_show_supports != show) {
+        m_show_supports = show;
+        on_update();
+    }
+}
+
 
 
 void HollowedMesh::on_update()

src/slic3r/GUI/Gizmos/GLGizmosCommon.hpp

@@ -61,6 +61,7 @@ public:
 
     // Getters for the data that need to be accessed from the gizmos directly.
     CommonGizmosDataObjects::SelectionInfo* selection_info() const;
+    CommonGizmosDataObjects::InstancesHider* instances_hider() const;
     CommonGizmosDataObjects::HollowedMesh* hollowed_mesh() const;
     CommonGizmosDataObjects::Raycaster* raycaster() const;
     CommonGizmosDataObjects::ObjectClipper* object_clipper() const;
@@ -156,9 +157,15 @@ public:
     CommonGizmosDataID get_dependencies() const override { return CommonGizmosDataID::SelectionInfo; }
 #endif // NDEBUG
 
+    void show_supports(bool show);
+    bool are_supports_shown() const { return m_show_supports; }
+
 protected:
     void on_update() override;
     void on_release() override;
+
+private:
+    bool m_show_supports = false;
 };