Fix sidebar combobox behavior for support routing

"support_buildplate_only" was toggled only for default supports

src/libslic3r/PrintConfig.cpp

@@ -4802,6 +4802,23 @@ Points get_bed_shape(const PrintConfig &cfg)
 
 Points get_bed_shape(const SLAPrinterConfig &cfg) { return to_points(cfg.bed_shape.values); }
 
+std::string get_sla_suptree_prefix(const DynamicPrintConfig &config)
+{
+    const auto *suptreetype = config.option<ConfigOptionEnum<sla::SupportTreeType>>("support_tree_type");
+    std::string slatree = "";
+    if (suptreetype) {
+        auto ttype = static_cast<sla::SupportTreeType>(suptreetype->getInt());
+        switch (ttype) {
+        case sla::SupportTreeType::Branching: slatree = "branching"; break;
+        case sla::SupportTreeType::Organic: slatree = "organic"; break;
+        default:
+            ;
+        }
+    }
+
+    return slatree;
+}
+
 } // namespace Slic3r
 
 #include <cereal/types/polymorphic.hpp>

src/libslic3r/PrintConfig.hpp

@@ -1167,6 +1167,8 @@ Points get_bed_shape(const DynamicPrintConfig &cfg);
 Points get_bed_shape(const PrintConfig &cfg);
 Points get_bed_shape(const SLAPrinterConfig &cfg);
 
+std::string get_sla_suptree_prefix(const DynamicPrintConfig &config);
+
 // ModelConfig is a wrapper around DynamicPrintConfig with an addition of a timestamp.
 // Each change of ModelConfig is tracked by assigning a new timestamp from a global counter.
 // The counter is used for faster synchronization of the background slicing thread

src/slic3r/GUI/Plater.cpp

@@ -553,10 +553,13 @@ FreqChangedParams::FreqChangedParams(wxWindow* parent) :
             const bool supports_enable = selection == _("None") ? false : true;
             new_conf.set_key_value("supports_enable", new ConfigOptionBool(supports_enable));
 
+            std::string treetype = get_sla_suptree_prefix(new_conf);
+
             if (selection == _("Everywhere"))
-                new_conf.set_key_value("support_buildplate_only", new ConfigOptionBool(false));
+                new_conf.set_key_value(treetype + "support_buildplate_only", new ConfigOptionBool(false));
             else if (selection == _("Support on build plate only"))
-                new_conf.set_key_value("support_buildplate_only", new ConfigOptionBool(true));
+                new_conf.set_key_value(treetype + "support_buildplate_only", new ConfigOptionBool(true));
+
         }
 
         tab->load_config(new_conf);

src/slic3r/GUI/Tab.cpp

@@ -1038,8 +1038,11 @@ void Tab::load_key_value(const std::string& opt_key, const boost::any& value, bo
 
 static wxString support_combo_value_for_config(const DynamicPrintConfig &config, bool is_fff)
 {
+    std::string slatree = is_fff ? "" : get_sla_suptree_prefix(config);
+
     const std::string support         = is_fff ? "support_material"                 : "supports_enable";
-    const std::string buildplate_only = is_fff ? "support_material_buildplate_only" : "support_buildplate_only";
+    const std::string buildplate_only = is_fff ? "support_material_buildplate_only" : slatree + "support_buildplate_only";
+
     return
         ! config.opt_bool(support) ?
             _("None") :
@@ -1082,7 +1085,7 @@ void Tab::on_value_change(const std::string& opt_key, const boost::any& value)
 
     if (is_fff ?
             (opt_key == "support_material" || opt_key == "support_material_auto" || opt_key == "support_material_buildplate_only") :
-            (opt_key == "supports_enable"  || opt_key == "support_buildplate_only"))
+            (opt_key == "supports_enable"  || opt_key == "support_tree_type" || opt_key == get_sla_suptree_prefix(*m_config) + "support_buildplate_only"))
         og_freq_chng_params->set_value("support", support_combo_value_for_config(*m_config, is_fff));
 
     if (! is_fff && (opt_key == "pad_enable" || opt_key == "pad_around_object"))