Implement font::load command in iced_native

native/src/command/action.rs

@@ -1,10 +1,12 @@
 use crate::clipboard;
+use crate::font;
 use crate::system;
 use crate::widget;
 use crate::window;
 
 use iced_futures::MaybeSend;
 
+use std::borrow::Cow;
 use std::fmt;
 
 /// An action that a [`Command`] can perform.
@@ -27,6 +29,15 @@ pub enum Action<T> {
 
     /// Run a widget action.
     Widget(widget::Action<T>),
+
+    /// Load a font from its bytes.
+    LoadFont {
+        /// The bytes of the font to load.
+        bytes: Cow<'static, [u8]>,
+
+        /// The message to produce when the font has been loaded.
+        tagger: Box<dyn Fn(Result<(), font::Error>) -> T>,
+    },
 }
 
 impl<T> Action<T> {
@@ -49,6 +60,10 @@ impl<T> Action<T> {
             Self::Window(window) => Action::Window(window.map(f)),
             Self::System(system) => Action::System(system.map(f)),
             Self::Widget(widget) => Action::Widget(widget.map(f)),
+            Self::LoadFont { bytes, tagger } => Action::LoadFont {
+                bytes,
+                tagger: Box::new(move |result| f(tagger(result))),
+            },
         }
     }
 }
@@ -63,6 +78,7 @@ impl<T> fmt::Debug for Action<T> {
             Self::Window(action) => write!(f, "Action::Window({action:?})"),
             Self::System(action) => write!(f, "Action::System({action:?})"),
             Self::Widget(_action) => write!(f, "Action::Widget"),
+            Self::LoadFont { .. } => write!(f, "Action::LoadFont"),
         }
     }
 }