feat: add native material backgrounds

crates/theme/src/lib.rs

@@ -14,13 +14,13 @@ mod resolve;
 mod source;
 mod system;
 
-pub use colors::ColorTokens;
+pub use colors::{ColorTokens, MaterialTokens};
 pub use definition::ThemeDefinition;
 pub use ramps::{AccentShades, Oklch};
 pub use resolve::{Ramps, ResolvedTheme};
 pub use system::{AccessibilityPreferences, PartialPalette, SourceKind, SystemTheme};
 
-use gpui::{App, Global, Hsla, Pixels, WindowAppearance, px};
+use gpui::{App, Global, Hsla, Pixels, WindowAppearance, WindowBackgroundAppearance, px};
 use std::time::Duration;
 
 /// The hairline width of the control border every button and field paints;
@@ -50,6 +50,8 @@ impl ThemeVariant {
 pub struct Theme {
     pub variant: ThemeVariant,
     pub colors: ColorTokens,
+    /// The translucent paints over the window's native material.
+    pub material: MaterialTokens,
     pub ramps: Ramps,
     pub radius: Radius,
     /// Per-platform border and focus chrome.
@@ -68,6 +70,8 @@ pub struct Theme {
     pub mono_font: &'static str,
     pub sizes: SizeTable,
     pub accessibility: AccessibilityPreferences,
+    /// The material a window should open with, after accessibility.
+    pub window_background: WindowBackgroundAppearance,
 }
 
 impl Global for Theme {}
@@ -524,6 +528,7 @@ impl Theme {
         Self {
             variant: resolved.variant,
             colors: resolved.colors,
+            material: resolved.material,
             ramps: resolved.ramps,
             radius: resolved.radius,
             borders: resolved.borders,
@@ -536,6 +541,7 @@ impl Theme {
             mono_font: resolved.mono_font,
             sizes: resolved.sizes,
             accessibility: resolved.accessibility,
+            window_background: resolved.window_background,
         }
     }