Embed Fira Sans font on Wasm builds by default

Cargo.toml

@@ -18,7 +18,7 @@ all-features = true
 maintenance = { status = "actively-developed" }
 
 [features]
-default = ["wgpu"]
+default = ["wgpu", "fira-sans"]
 # Enable the `wgpu` GPU-accelerated renderer backend
 wgpu = ["iced_renderer/wgpu", "iced_widget/wgpu"]
 # Enables the `Image` widget
@@ -53,6 +53,8 @@ highlighter = ["iced_highlighter"]
 multi-window = ["iced_winit/multi-window"]
 # Enables the advanced module
 advanced = []
+# Enables embedding Fira Sans as the default font on Wasm builds
+fira-sans = ["iced_renderer/fira-sans"]
 
 [dependencies]
 iced_core.workspace = true

graphics/Cargo.toml

@@ -18,6 +18,7 @@ all-features = true
 geometry = ["lyon_path"]
 image = ["dep:image", "kamadak-exif"]
 web-colors = []
+fira-sans = []
 
 [dependencies]
 iced_core.workspace = true

graphics/src/text.rs

@@ -17,6 +17,15 @@ use once_cell::sync::OnceCell;
 use std::borrow::Cow;
 use std::sync::{Arc, RwLock, Weak};
 
+/// The regular variant of the [Fira Sans] font.
+///
+/// It is loaded as part of the default fonts in Wasm builds.
+///
+/// [Fira Sans]: https://mozilla.github.io/Fira/
+#[cfg(all(target_arch = "wasm32", feature = "fira-sans"))]
+pub const FIRA_SANS_REGULAR: &'static [u8] =
+    include_bytes!("../fonts/FiraSans-Regular.ttf").as_slice();
+
 /// Returns the global [`FontSystem`].
 pub fn font_system() -> &'static RwLock<FontSystem> {
     static FONT_SYSTEM: OnceCell<RwLock<FontSystem>> = OnceCell::new();
@@ -27,6 +36,10 @@ pub fn font_system() -> &'static RwLock<FontSystem> {
                 cosmic_text::fontdb::Source::Binary(Arc::new(
                     include_bytes!("../fonts/Iced-Icons.ttf").as_slice(),
                 )),
+                #[cfg(all(target_arch = "wasm32", feature = "fira-sans"))]
+                cosmic_text::fontdb::Source::Binary(Arc::new(
+                    include_bytes!("../fonts/FiraSans-Regular.ttf").as_slice(),
+                )),
             ]),
             version: Version::default(),
         })

renderer/Cargo.toml

@@ -18,6 +18,7 @@ geometry = ["iced_graphics/geometry", "iced_tiny_skia/geometry", "iced_wgpu?/geo
 tracing = ["iced_wgpu?/tracing"]
 web-colors = ["iced_wgpu?/web-colors"]
 webgl = ["iced_wgpu?/webgl"]
+fira-sans = ["iced_graphics/fira-sans"]
 
 [dependencies]
 iced_graphics.workspace = true