新主题

apps/server-rust/src/typography.rs

@@ -0,0 +1,39 @@
+//! Shared, validated typography settings for all built-in OBS components.
+//!
+//! Font IDs map to fixed frontend font stacks rather than accepting arbitrary
+//! CSS. This keeps settings portable between OBS hosts and prevents untrusted
+//! component settings from becoming a CSS injection boundary.
+
+use serde::{Deserialize, Serialize};
+
+#[derive(Clone, Copy, Debug, Default, Eq, PartialEq, Deserialize, Serialize)]
+#[serde(rename_all = "kebab-case")]
+pub enum FontFamilyId {
+    Song,
+    #[default]
+    FangSong,
+    Kai,
+}
+
+pub const fn default_font_brightness() -> u16 {
+    130
+}
+
+pub fn sanitize_font_brightness(value: u16) -> u16 {
+    value.clamp(70, 180)
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn font_ids_are_stable_and_brightness_is_bounded() {
+        assert_eq!(
+            serde_json::to_string(&FontFamilyId::FangSong).unwrap(),
+            "\"fang-song\""
+        );
+        assert_eq!(sanitize_font_brightness(1), 70);
+        assert_eq!(sanitize_font_brightness(u16::MAX), 180);
+    }
+}