perf(fonts): use font atlas for faster lookups (#123)

Author: j-g00da

Cargo.lock

@@ -19,7 +19,7 @@ ratatui-core = { version = "0.1.0-alpha.6", features = ["underline-color"] }
 thiserror = { version = "2.0.16", default-features = false }
 embedded-graphics = "0.8.1"
 embedded-graphics-simulator = "0.7.0"
-embedded-graphics-unicodefonts = "0.1.0"
+embedded-graphics-unicodefonts = "0.2.0"
 weact-studio-epd = { version = "0.1.2", features = ["blocking"] }
 ratatui = { version = "0.30.0-alpha.5", default-features = false }
 rstest = "0.25.0"

Cargo.toml

@@ -56,7 +56,7 @@ where
     fn default() -> Self {
         Self {
             flush_callback: Box::new(|_| {}),
-            font_regular: default_font::regular,
+            font_regular: default_font::get_regular(),
             font_bold: None,
             font_italic: None,
             vertical_alignment: TerminalAlignment::Start,

mousefood/src/backend.rs

@@ -1,5 +1,7 @@
 #[cfg(feature = "fonts")]
-pub use embedded_graphics_unicodefonts::MONO_6X10 as regular;
+pub use embedded_graphics_unicodefonts::mono_6x10_atlas as get_regular;
 
 #[cfg(not(feature = "fonts"))]
-pub use embedded_graphics::mono_font::ascii::FONT_6X10 as regular;
+pub fn get_regular() -> embedded_graphics::mono_font::MonoFont<'static> {
+    embedded_graphics::mono_font::ascii::FONT_6X10
+}