bendns' repos / helix
Unnamed repository; edit this file 'description' to name the repository.
Diffstat (limited to 'helix-view/src/theme.rs')
-rw-r--r--helix-view/src/theme.rs69
1 files changed, 69 insertions, 0 deletions
diff --git a/helix-view/src/theme.rs b/helix-view/src/theme.rs
index e2e10932..173a40f3 100644
--- a/helix-view/src/theme.rs
+++ b/helix-view/src/theme.rs
@@ -35,6 +35,75 @@ pub static BASE16_DEFAULT_THEME: Lazy<Theme> = Lazy::new(|| Theme {
..Theme::from(BASE16_DEFAULT_THEME_DATA.clone())
});
+#[derive(Debug, Clone, Copy, PartialEq, Eq, PartialOrd, Ord, Hash)]
+pub enum Mode {
+ Dark,
+ Light,
+}
+
+#[cfg(feature = "term")]
+impl From<termina::escape::csi::ThemeMode> for Mode {
+ fn from(mode: termina::escape::csi::ThemeMode) -> Self {
+ match mode {
+ termina::escape::csi::ThemeMode::Dark => Self::Dark,
+ termina::escape::csi::ThemeMode::Light => Self::Light,
+ }
+ }
+}
+
+#[derive(Debug, Clone, PartialEq, Eq)]
+pub struct Config {
+ light: String,
+ dark: String,
+ /// A theme to choose when the terminal did not declare either light or dark mode.
+ /// When not specified the dark theme is preferred.
+ fallback: Option<String>,
+}
+
+impl Config {
+ pub fn choose(&self, preference: Option<Mode>) -> &str {
+ match preference {
+ Some(Mode::Light) => &self.light,
+ Some(Mode::Dark) => &self.dark,
+ None => self.fallback.as_ref().unwrap_or(&self.dark),
+ }
+ }
+}
+
+impl<'de> Deserialize<'de> for Config {
+ fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>
+ where
+ D: serde::Deserializer<'de>,
+ {
+ #[derive(Deserialize)]
+ #[serde(untagged, deny_unknown_fields, rename_all = "kebab-case")]
+ enum InnerConfig {
+ Constant(String),
+ Adaptive {
+ dark: String,
+ light: String,
+ fallback: Option<String>,
+ },
+ }
+
+ let inner = InnerConfig::deserialize(deserializer)?;
+
+ let (light, dark, fallback) = match inner {
+ InnerConfig::Constant(theme) => (theme.clone(), theme.clone(), None),
+ InnerConfig::Adaptive {
+ light,
+ dark,
+ fallback,
+ } => (light, dark, fallback),
+ };
+
+ Ok(Self {
+ light,
+ dark,
+ fallback,
+ })
+ }
+}
#[derive(Clone, Debug)]
pub struct Loader {
/// Theme directories to search from highest to lowest priority