feat: add native material backgrounds

2026-11-09 09:52:29 +07:00
parent 8c438ed8a6
commit 7784e8d570
14 changed files with 279 additions and 36 deletions
@@ -31,12 +31,12 @@ const TITLEBAR_HEIGHT_PX: f32 = 32.0;
 /// WinUI 11's default body text size, in pixels at 100% scaling.
 const ROOT_FONT_SIZE_PX: f32 = 14.0;

-/// The `Personalize` registry values, read once at startup as the fallback
-/// when the WinRT surface is unavailable.
+/// The `Personalize` registry values and the OS build number.
 #[derive(Clone, Copy, Debug, Default)]
 struct RegistrySettings {
    apps_use_light_theme: Option<bool>,
    enable_transparency: Option<bool>,
+    current_build: Option<u32>,
 }

 impl RegistrySettings {
@@ -45,6 +45,9 @@ impl RegistrySettings {
            windows_registry::CURRENT_USER
                .open(r"Software\Microsoft\Windows\CurrentVersion\Themes\Personalize")
        };
+        let current_version = || {
+            windows_registry::LOCAL_MACHINE.open(r"SOFTWARE\Microsoft\Windows NT\CurrentVersion")
+        };
        Self {
            apps_use_light_theme: personalize()
                .and_then(|key| key.get_u32("AppsUseLightTheme"))
@@ -54,6 +57,10 @@ impl RegistrySettings {
                .and_then(|key| key.get_u32("EnableTransparency"))
                .ok()
                .map(|value| value != 0),
+            current_build: current_version()
+                .and_then(|key| key.get_string("CurrentBuildNumber"))
+                .ok()
+                .and_then(|build| build.parse::<u32>().ok()),
        }
    }
 }
@@ -130,6 +137,17 @@ impl WindowsSource {
                .unwrap_or(false),
        }
    }
+
+    /// The native backdrop: Mica on Windows 11, acrylic on Windows 10 1809+.
+    fn window_material(&self) -> Option<gpui::WindowBackgroundAppearance> {
+        match self.registry.current_build {
+            // 22621: Windows 11 22H2, where the DWM backdrop types exist.
+            Some(build) if build >= 22621 => Some(gpui::WindowBackgroundAppearance::MicaBackdrop),
+            // 17763: Windows 10 1809, where acrylic blur-behind exists.
+            Some(build) if build >= 17763 => Some(gpui::WindowBackgroundAppearance::Blurred),
+            _ => None,
+        }
+    }
 }

 impl ThemeSource for WindowsSource {
@@ -180,6 +198,7 @@ impl ThemeSource for WindowsSource {
            titlebar_height: Some(gpui::px(TITLEBAR_HEIGHT_PX)),
            root_font_size: Some(gpui::px(ROOT_FONT_SIZE_PX * text_scale as f32)),
            accessibility: self.accessibility(),
+            window_background: self.window_material(),
            source: SourceKind::Windows,
        }
    }