Hide UI preference keys behind adapter

src/legacy_preference_storage.cpp

@@ -21,6 +21,38 @@ LegacyStartupPreferenceSnapshot read_legacy_startup_preferences(bool default_vr_
     };
 }
 
+LegacyCanvasPreferenceSnapshot read_legacy_canvas_preferences()
+{
+    return {
+        Settings::value_or<Serializer::Float>("vp-scale", 1.0F),
+        Settings::value_or<Serializer::Integer>("show-cursor", 0),
+    };
+}
+
+LegacyUiPreferenceSnapshot read_legacy_ui_preferences()
+{
+    LegacyUiPreferenceSnapshot snapshot;
+    snapshot.has_rtl = Settings::has("ui-rtl");
+    if (snapshot.has_rtl)
+        snapshot.rtl = Settings::value<Serializer::Integer>("ui-rtl");
+    if (Settings::has("ui"))
+        snapshot.state = Settings::get<Serializer::Descriptor>("ui");
+    return snapshot;
+}
+
+LegacyWindowPreferenceSnapshot read_legacy_window_preferences(int default_show_command)
+{
+    LegacyWindowPreferenceSnapshot snapshot;
+    snapshot.has_ui_scale = Settings::has("ui-scale");
+    if (snapshot.has_ui_scale)
+        snapshot.ui_scale = Settings::value<Serializer::Float>("ui-scale");
+    snapshot.show_command = Settings::value_or<Serializer::Integer>("window-show-cmd", default_show_command);
+    snapshot.has_window_rect = Settings::has("window-rect");
+    if (snapshot.has_window_rect)
+        snapshot.window_rect = Settings::value<Serializer::IVec4>("window-rect");
+    return snapshot;
+}
+
 bool has_legacy_preference(const char* key)
 {
     return Settings::has(key);
@@ -86,6 +118,24 @@ void unset_legacy_preference(const char* key)
     Settings::unset(key);
 }
 
+void save_legacy_ui_scale_preference(float scale)
+{
+    Settings::set("ui-scale", Serializer::Float(scale));
+    Settings::save();
+}
+
+void set_legacy_ui_state_preferences(const Serializer::Descriptor& state, bool right_to_left)
+{
+    Settings::set("ui", state);
+    Settings::set("ui-rtl", Serializer::Boolean(right_to_left));
+}
+
+void set_legacy_window_preferences(int show_command, const glm::ivec4& window_rect)
+{
+    Settings::set("window-show-cmd", Serializer::Integer(show_command));
+    Settings::set("window-rect", Serializer::IVec4(window_rect));
+}
+
 void save_legacy_boolean_preference(const char* key, bool value)
 {
     set_legacy_boolean_preference(key, value);