Allow configuration of default font

native/src/renderer/windowed.rs

@@ -4,13 +4,15 @@ use raw_window_handle::HasRawWindowHandle;
 
 /// A renderer that can target windows.
 pub trait Windowed: super::Renderer + Sized {
+    type Settings: Default;
+
     /// The type of target.
     type Target: Target<Renderer = Self>;
 
     /// Creates a new [`Windowed`] renderer.
     ///
     /// [`Windowed`]: trait.Windowed.html
-    fn new() -> Self;
+    fn new(settings: Self::Settings) -> Self;
 
     /// Performs the drawing operations described in the output on the given
     /// target.

src/application.rs

@@ -151,7 +151,12 @@ pub trait Application: Sized {
         Self: 'static,
     {
         #[cfg(not(target_arch = "wasm32"))]
-        <Instance<Self> as iced_winit::Application>::run(_settings.into());
+        <Instance<Self> as iced_winit::Application>::run(
+            _settings.into(),
+            iced_wgpu::Settings {
+                default_font: _settings.default_font,
+            },
+        );
 
         #[cfg(target_arch = "wasm32")]
         <Instance<Self> as iced_web::Application>::run();

src/settings.rs

@@ -15,6 +15,9 @@ pub struct Settings {
     ///
     /// [`Color`]: ../struct.Color.html
     pub background: Color,
+
+    // TODO: Add `name` for web compatibility
+    pub default_font: Option<&'static [u8]>,
 }
 
 impl Default for Settings {
@@ -22,6 +25,7 @@ impl Default for Settings {
         Settings {
             window: Window::default(),
             background: Color::WHITE,
+            default_font: None,
         }
     }
 }

wgpu/src/lib.rs

@@ -31,12 +31,14 @@ mod image;
 mod primitive;
 mod quad;
 mod renderer;
+mod settings;
 mod text;
 mod transformation;
 
 pub use defaults::Defaults;
 pub use primitive::Primitive;
 pub use renderer::{Renderer, Target};
+pub use settings::Settings;
 #[doc(no_inline)]
 pub use widget::*;
 

wgpu/src/renderer.rs

@@ -1,5 +1,6 @@
 use crate::{
-    image, quad, text, Defaults, Image, Primitive, Quad, Transformation,
+    image, quad, text, Defaults, Image, Primitive, Quad, Settings,
+    Transformation,
 };
 use iced_native::{
     renderer::{Debugger, Windowed},
@@ -49,7 +50,7 @@ impl<'a> Layer<'a> {
 }
 
 impl Renderer {
-    fn new() -> Self {
+    fn new(settings: Settings) -> Self {
         let adapter = Adapter::request(&RequestAdapterOptions {
             power_preference: PowerPreference::Default,
             backends: BackendBit::all(),
@@ -63,7 +64,8 @@ impl Renderer {
             limits: Limits { max_bind_groups: 2 },
         });
 
-        let text_pipeline = text::Pipeline::new(&mut device);
+        let text_pipeline =
+            text::Pipeline::new(&mut device, settings.default_font);
         let quad_pipeline = quad::Pipeline::new(&mut device);
         let image_pipeline = image::Pipeline::new(&mut device);
 
@@ -432,10 +434,11 @@ impl iced_native::Renderer for Renderer {
 }
 
 impl Windowed for Renderer {
+    type Settings = Settings;
     type Target = Target;
 
-    fn new() -> Self {
-        Self::new()
+    fn new(settings: Settings) -> Self {
+        Self::new(settings)
     }
 
     fn draw<T: AsRef<str>>(

wgpu/src/settings.rs

@@ -0,0 +1,4 @@
+#[derive(Debug, Clone, Copy, PartialEq, Eq, Default)]
+pub struct Settings {
+    pub default_font: Option<&'static [u8]>,
+}

wgpu/src/text.rs

@@ -22,13 +22,16 @@ pub struct Pipeline {
 }
 
 impl Pipeline {
-    pub fn new(device: &mut wgpu::Device) -> Self {
+    pub fn new(device: &mut wgpu::Device, default_font: Option<&[u8]>) -> Self {
         // TODO: Font customization
         let font_source = font::Source::new();
 
-        let default_font = font_source
+        let default_font =
+            default_font.map(|slice| slice.to_vec()).unwrap_or_else(|| {
+                font_source
                     .load(&[font::Family::SansSerif, font::Family::Serif])
-            .unwrap_or_else(|_| FALLBACK_FONT.to_vec());
+                    .unwrap_or_else(|_| FALLBACK_FONT.to_vec())
+            });
 
         let load_glyph_brush = |font: Vec<u8>| {
             let builder =

winit/src/application.rs

@@ -81,8 +81,10 @@ pub trait Application: Sized {
     /// It should probably be that last thing you call in your `main` function.
     ///
     /// [`Application`]: trait.Application.html
-    fn run(settings: Settings)
-    where
+    fn run(
+        settings: Settings,
+        renderer_settings: <Self::Renderer as Windowed>::Settings,
+    ) where
         Self: 'static,
     {
         use winit::{
@@ -140,7 +142,7 @@ pub trait Application: Sized {
         let mut resized = false;
 
         let clipboard = Clipboard::new(&window);
-        let mut renderer = Self::Renderer::new();
+        let mut renderer = Self::Renderer::new(renderer_settings);
 
         let mut target = {
             let (width, height) = to_physical(size, dpi);