Rebrand to Galaxy, major improvements to Bedrock support, still needs some TLC though

crates/galaxyui/src/windowing/winit/windows/registry.rs

@@ -0,0 +1,22 @@
+use crate::platform::SystemTheme;
+use winreg::enums::HKEY_CURRENT_USER;
+use winreg::RegKey;
+
+const SYSTEM_THEME_SUBKEY_PATH: &str =
+    "SOFTWARE\\Microsoft\\Windows\\CurrentVersion\\Themes\\Personalize";
+const LIGHT_MODE_SUBKEY_NAME: &str = "AppsUseLightTheme";
+
+/// Retrieves the system theme from the Windows Registry.
+/// https://github.com/wez/wezterm/blob/b8f94c474ce48ac195b51c1aeacf41ae049b774e/window/src/os/windows/connection.rs#L42
+pub fn get_system_theme() -> Result<SystemTheme, std::io::Error> {
+    let theme_subkey = RegKey::predef(HKEY_CURRENT_USER).open_subkey(SYSTEM_THEME_SUBKEY_PATH)?;
+    let theme_value = theme_subkey.get_value::<u32, _>(LIGHT_MODE_SUBKEY_NAME)?;
+    match theme_value {
+        1 => Ok(SystemTheme::Light),
+        0 => Ok(SystemTheme::Dark),
+        _ => Err(std::io::Error::new(
+            std::io::ErrorKind::InvalidData,
+            format!("System theme value {theme_value:?} was invalid"),
+        )),
+    }
+}