Use Borrow, add double f64 test

Author: ranfdev

glib-macros/src/properties.rs

@@ -498,10 +498,10 @@ fn expand_getset_properties_impl(props: &[PropDesc]) -> TokenStream2 {
             quote!(#fn_prototype { #body })
         });
         let setter = (p.set.is_some() && !p.flags.contains(&"construct_only")).then(|| {
-            let body = quote!(self.set_property_from_value(#name, &value.as_ref().to_value()));
+            let body = quote!(self.set_property_from_value(#name, &std::borrow::Borrow::borrow(&value).to_value()));
             let fn_prototype = {
                 let ident = format_ident!("set_{}", ident);
-                quote!(pub fn #ident<'a>(&self, value: impl AsRef<<<#ty as #crate_ident::Property>::Value as #crate_ident::HasParamSpec>::SetValue>))
+                quote!(pub fn #ident<'a>(&self, value: impl std::borrow::Borrow<<<#ty as #crate_ident::Property>::Value as #crate_ident::HasParamSpec>::SetValue>))
             };
             quote!(#fn_prototype { #body })
         });

glib-macros/tests/properties.rs

@@ -48,6 +48,8 @@ fn props() {
             pub struct Foo {
                 #[property(get, set)]
                 bar: Mutex<String>,
+                #[property(get, set)]
+                double: RefCell<f64>,
                 // The following property doesn't store any data. The value of the property is calculated
                 // when the value is accessed.
                 #[property(get = Self::hello_world)]
@@ -233,6 +235,9 @@ fn props() {
             "setter working".to_string()
         );
 
+        myfoo.set_double(0.1);
+        assert_eq!(myfoo.property::<f64>("double"), 0.1);
+
         // simple with various String types
         myfoo.set_bar(String::from("setter working"));
         myfoo.set_bar(glib::GString::from("setter working"));