1747 lines
67 KiB
Rust
1747 lines
67 KiB
Rust
//! Pure theme resolution, appearance scheduling, and readable transition samples.
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use std::path::{Path, PathBuf};
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use jiff::civil::{DateTime, Time};
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use jiff::tz::{Disambiguation, TimeZone};
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use jiff::{Timestamp, ToSpan};
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use serde::{Deserialize, Serialize};
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use serde_json::{Value, json};
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use crate::Document;
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pub const SCHEMA_VERSION: u32 = 2;
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pub const TRANSITION_MS: u64 = 250;
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#[derive(Clone, Copy, Debug, Default, Deserialize, Serialize, PartialEq, Eq)]
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#[serde(rename_all = "lowercase")]
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pub enum Appearance {
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Light,
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#[default]
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Dark,
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}
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#[derive(Clone, Copy, Debug, Default, Deserialize, Serialize, PartialEq, Eq)]
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#[serde(rename_all = "lowercase")]
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pub enum Mode {
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Light,
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#[default]
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Dark,
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Auto,
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}
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#[derive(Clone, Debug, Default, Deserialize, Serialize, PartialEq, Eq)]
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#[serde(default)]
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pub struct Accessibility {
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pub increase_contrast: bool,
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pub reduce_transparency: bool,
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}
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#[derive(Clone, Debug, Deserialize, Serialize, PartialEq)]
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#[serde(default)]
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pub struct Selection {
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pub family: Option<String>,
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pub preset: String,
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pub file: Option<PathBuf>,
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#[serde(flatten)]
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pub overrides: serde_json::Map<String, Value>,
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}
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impl Default for Selection {
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fn default() -> Self {
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Self {
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preset: "ferese-blue".into(),
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family: None,
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file: None,
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overrides: Default::default(),
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}
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}
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}
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#[derive(Clone, Copy, Debug, Default, Deserialize, Serialize, PartialEq, Eq)]
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#[serde(rename_all = "kebab-case")]
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pub enum AutoSource {
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System,
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SunriseSunset,
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#[default]
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Schedule,
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}
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#[derive(Clone, Debug, Default)]
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pub struct AutoContext {
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pub system: Option<Appearance>,
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}
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#[derive(Clone, Debug, Deserialize, Serialize, PartialEq)]
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#[serde(default)]
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pub struct Schedule {
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pub source: AutoSource,
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pub timezone: String,
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pub light_at: String,
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pub dark_at: String,
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}
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impl Default for Schedule {
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fn default() -> Self {
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Self {
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source: AutoSource::Schedule,
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timezone: "system".into(),
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light_at: "07:00".into(),
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dark_at: "19:00".into(),
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}
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}
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}
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impl Schedule {
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pub fn resolve(
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&self,
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now: Timestamp,
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zone: &TimeZone,
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context: &AutoContext,
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) -> Result<(Appearance, Option<Timestamp>, Option<String>), String> {
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match self.source {
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AutoSource::System => Ok((
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context.system.unwrap_or(Appearance::Dark),
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None,
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context
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.system
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.is_none()
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.then(|| "System appearance is unavailable. Using Dark until it becomes available.".into()),
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)),
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AutoSource::Schedule => self
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.boundaries(now, zone)
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.map(|(appearance, next)| (appearance, Some(next), None)),
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AutoSource::SunriseSunset => {
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Err("Sunrise/sunset is not available yet; choose Follow system or Custom schedule.".into())
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}
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}
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}
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pub fn zone(&self) -> Result<TimeZone, String> {
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if self.timezone == "system" {
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if std::env::var_os("TZ").is_some() {
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TimeZone::try_system().map_err(|e| e.to_string())
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} else {
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let bytes = std::fs::read("/etc/localtime").map_err(|e| e.to_string())?;
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TimeZone::tzif("system", &bytes).map_err(|e| e.to_string())
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}
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} else {
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TimeZone::get(&self.timezone).map_err(|e| e.to_string())
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}
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}
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pub fn boundaries(&self, now: Timestamp, zone: &TimeZone) -> Result<(Appearance, Timestamp), String> {
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let parse = |s: &str| -> Result<Time, String> {
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if s.len() != 5 || s.as_bytes()[2] != b':' {
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return Err("theme schedule times must use HH:MM".into());
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}
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format!("{s}:00").parse::<Time>().map_err(|e| e.to_string())
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};
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let light = parse(&self.light_at)?;
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let dark = parse(&self.dark_at)?;
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if light == dark {
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return Err("light-at and dark-at must differ".into());
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}
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let date = now.to_zoned(zone.clone()).date();
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let mut boundaries = Vec::new();
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for days in -2i64..=2 {
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let date = date.checked_add(days.days()).map_err(|e| e.to_string())?;
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for (time, appearance) in [(light, Appearance::Light), (dark, Appearance::Dark)] {
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let civil = DateTime::from_parts(date, time);
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let ambiguous = zone.to_ambiguous_zoned(civil);
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let zoned = match ambiguous.earlier() {
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Ok(earlier) if earlier.datetime() == civil => earlier,
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_ => zone
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.to_ambiguous_zoned(civil)
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.disambiguate(Disambiguation::Compatible)
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.map_err(|e| e.to_string())?,
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};
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boundaries.push((zoned.timestamp(), appearance));
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}
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}
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boundaries.sort_by_key(|entry| entry.0);
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let appearance = boundaries
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.iter()
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.rev()
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.find(|entry| entry.0 <= now)
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.map(|entry| entry.1)
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.ok_or("no preceding theme boundary")?;
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let next = boundaries
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.iter()
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.find(|entry| entry.0 > now)
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.map(|entry| entry.0)
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.ok_or("no upcoming theme boundary")?;
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Ok((appearance, next))
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}
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}
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#[derive(Clone, Debug, Deserialize, Serialize, PartialEq)]
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pub struct CustomTheme {
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pub file: PathBuf,
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}
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#[derive(Clone, Debug, Deserialize, Serialize, PartialEq)]
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#[serde(default)]
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pub struct Policy {
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pub family: Option<String>,
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pub split: Option<bool>,
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pub custom_themes: std::collections::BTreeMap<String, CustomTheme>,
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pub mode: Mode,
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pub file: Option<PathBuf>,
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#[serde(deserialize_with = "deserialize_light_selection")]
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pub light: Selection,
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pub dark: Selection,
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pub schedule: Schedule,
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pub accessibility: Accessibility,
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pub accent: Option<String>,
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}
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fn deserialize_light_selection<'de, D: serde::Deserializer<'de>>(deserializer: D) -> Result<Selection, D::Error> {
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let mut value = Value::deserialize(deserializer)?;
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if let Some(object) = value.as_object_mut() {
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object.entry("preset").or_insert(json!("ferese-blue-light"));
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}
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serde_json::from_value(value).map_err(serde::de::Error::custom)
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}
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impl Default for Policy {
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fn default() -> Self {
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Self {
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mode: Mode::Dark,
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family: None,
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split: None,
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custom_themes: Default::default(),
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file: None,
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light: Selection {
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preset: "ferese-blue-light".into(),
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family: None,
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file: None,
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overrides: Default::default(),
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},
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dark: Selection::default(),
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schedule: Schedule::default(),
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accessibility: Accessibility::default(),
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accent: None,
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}
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}
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}
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#[derive(Clone, Debug, Deserialize, Serialize, PartialEq)]
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pub struct Colors {
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pub surface_base: String,
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pub surface_raised: String,
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pub application_background: String,
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pub text_primary: String,
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pub text_muted: String,
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pub accent: String,
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pub on_accent: String,
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pub border: String,
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pub shadow: String,
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}
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#[derive(Clone, Debug, Deserialize, Serialize, PartialEq)]
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pub struct Material {
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pub style: String,
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pub opacity: f64,
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pub blur_radius: f64,
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pub tint_strength: f64,
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}
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#[derive(Clone, Debug, Deserialize, Serialize, PartialEq)]
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pub struct Geometry {
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pub border_width: f64,
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pub focus_ring_width: f64,
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pub window_radius: f64,
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pub shell_radius: f64,
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pub top_bar_height: f64,
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pub top_bar_margin_top: i32,
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pub top_bar_margin_horizontal: i32,
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pub top_bar_window_gap: i32,
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pub panel_padding: f64,
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pub control_gap: f64,
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}
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#[derive(Clone, Debug, Deserialize, Serialize, PartialEq)]
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pub struct Typography {
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pub font_family: String,
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}
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#[derive(Clone, Debug, Deserialize, Serialize, PartialEq)]
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pub struct Background {
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pub path: Option<PathBuf>,
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pub lock_path: Option<PathBuf>,
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pub mode: String,
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}
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#[derive(Clone, Debug, Deserialize, Serialize, PartialEq)]
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pub struct BarSurface {
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pub background: String,
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pub text_primary: String,
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pub text_muted: String,
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}
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#[derive(Clone, Debug, Deserialize, Serialize, PartialEq)]
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pub struct Surfaces {
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pub bar: BarSurface,
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}
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#[derive(Clone, Debug, Deserialize, Serialize, PartialEq)]
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pub struct SoftShadow {
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pub offset_y: f64,
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pub blur: f64,
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pub opacity: f64,
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}
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#[derive(Clone, Debug, Deserialize, Serialize, PartialEq)]
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pub struct Shadows {
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pub soft: SoftShadow,
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}
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#[derive(Clone, Debug, Deserialize, Serialize, PartialEq)]
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pub struct Gradient {
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pub from: String,
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pub to: String,
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pub angle: f64,
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}
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#[derive(Clone, Debug, Default, Deserialize, Serialize, PartialEq)]
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pub struct Paint {
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pub gradient: Option<Gradient>,
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}
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#[derive(Clone, Debug, Deserialize, Serialize, PartialEq)]
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pub struct Tokens {
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pub colors: Colors,
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pub material: Material,
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pub geometry: Geometry,
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pub typography: Typography,
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pub background: Background,
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pub surface: Surfaces,
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pub shadow: Shadows,
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pub border: Paint,
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pub focus_ring: Paint,
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}
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impl Default for Tokens {
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fn default() -> Self {
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serde_json::from_value(json!({
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"colors": {"surface_base":"#111821", "surface_raised":"#1E2530", "application_background":"#171E27", "text_primary":"#F4F7FB", "text_muted":"#8793A2",
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"accent":"#3D7BE6", "on_accent":"#FFFFFF", "border":"#FFFFFF18", "shadow":"#00000055"},
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"material":{"style":"solid","opacity":0.78,"blur_radius":12.0,"tint_strength":0.5},
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"geometry":{"border_width":1.0,"focus_ring_width":2.0,"window_radius":14.0,"shell_radius":14.0,
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"top_bar_height":28.0,"top_bar_margin_top":0,"top_bar_margin_horizontal":0,
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"top_bar_window_gap":0,"panel_padding":12.0,"control_gap":12.0},
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"typography":{"font_family":"Inter"},
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"background":{"path":crate::default_wallpaper(),"lock_path":null,"mode":"fill"},
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"surface":{"bar":{"background":"#111821","text_primary":"#F4F7FB","text_muted":"#8793A2"}},
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"shadow":{"soft":{"offset_y":4.0,"blur":18.0,"opacity":0.2}},
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"border":{"gradient":null},"focus_ring":{"gradient":null}
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}))
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.expect("valid built-in theme")
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}
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}
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#[derive(Clone, Debug, Deserialize, Serialize, PartialEq)]
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pub struct ResolvedTheme {
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pub appearance: Appearance,
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pub tokens: Tokens,
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pub requested_accent: String,
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pub accessibility: Accessibility,
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pub reduced_motion: bool,
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}
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impl Default for ResolvedTheme {
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fn default() -> Self {
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Self {
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appearance: Appearance::Dark,
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requested_accent: "#3D7BE6".into(),
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tokens: Tokens::default(),
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accessibility: Accessibility::default(),
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reduced_motion: false,
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}
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}
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}
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#[derive(Clone, Debug, Deserialize, Serialize, PartialEq)]
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pub struct Snapshot {
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pub version: u32,
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pub revision: u64,
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pub mode: Mode,
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pub theme: ResolvedTheme,
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pub presented: ResolvedTheme,
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pub warnings: Vec<String>,
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pub error: Option<String>,
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#[serde(default = "crate::families::builtins")]
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pub families: Vec<crate::families::Family>,
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#[serde(default)]
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pub fallback_note: Option<String>,
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}
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impl Default for Snapshot {
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fn default() -> Self {
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Self {
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version: SCHEMA_VERSION,
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revision: 0,
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mode: Mode::Dark,
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theme: ResolvedTheme::default(),
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presented: ResolvedTheme::default(),
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warnings: vec![],
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error: None,
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families: crate::families::builtins(),
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fallback_note: None,
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}
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}
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}
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pub struct Candidate {
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pub policy: Policy,
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pub theme: ResolvedTheme,
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pub warnings: Vec<String>,
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pub files: Vec<PathBuf>,
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pub next_transition: Option<Timestamp>,
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pub families: Vec<crate::families::Family>,
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pub fallback_note: Option<String>,
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}
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pub fn resolve(
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document: &Document,
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directory: &Path,
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now: Timestamp,
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read: impl FnMut(&Path) -> Result<String, String>,
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) -> Result<Candidate, String> {
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resolve_with_context(document, directory, now, &AutoContext::default(), read)
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}
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pub fn resolve_with_context(
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document: &Document,
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directory: &Path,
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now: Timestamp,
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context: &AutoContext,
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mut read: impl FnMut(&Path) -> Result<String, String>,
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) -> Result<Candidate, String> {
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let root = document.get("theme").cloned().unwrap_or(json!({}));
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let policy: Policy = serde_json::from_value(root.clone()).map_err(|e| e.to_string())?;
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let zone = if policy.schedule.source == AutoSource::Schedule {
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policy.schedule.zone()?
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} else {
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TimeZone::UTC
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};
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let (scheduled, next, auto_note) = if policy.mode == Mode::Auto || policy.schedule.source == AutoSource::Schedule {
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policy.schedule.resolve(now, &zone, context)?
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} else {
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(Appearance::Dark, None, None)
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};
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let appearance = match policy.mode {
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Mode::Light => Appearance::Light,
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Mode::Dark => Appearance::Dark,
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Mode::Auto => scheduled,
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};
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// Both selections are validated so the next automatic transition cannot reveal a broken chain.
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let mut all_files = vec![];
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let mut sources: std::collections::HashMap<PathBuf, String> = std::collections::HashMap::new();
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let mut warnings = vec![];
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let mut selected = None;
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let mut families = crate::families::builtins();
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let mut imported = std::collections::HashMap::new();
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for (id, custom) in &policy.custom_themes {
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if id.is_empty()
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|| id.chars().any(|c| !c.is_ascii_alphanumeric() && c != '-')
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|| families.iter().any(|family| family.id == *id)
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{
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return Err(format!("Invalid or duplicate custom theme id: {id}"));
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}
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let path = theme_path(directory, &custom.file);
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all_files.push(path.clone());
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let source = read(&path)?;
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if source.len() > 60 * 1024 {
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return Err(format!("{} exceeds 60 KiB", path.display()));
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}
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let (family, variants, notes) = import_family(id, &source)?;
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warnings.extend(notes);
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families.push(family);
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imported.insert(id.clone(), variants);
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}
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let split = policy.split.unwrap_or_else(|| {
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crate::families::family_id(&policy.light.preset) != crate::families::family_id(&policy.dark.preset)
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});
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let single = policy
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.family
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.as_deref()
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.unwrap_or_else(|| crate::families::family_id(&policy.dark.preset));
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let mut fallback_note = if policy.mode == Mode::Auto { auto_note } else { None };
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for (kind, selection) in [(Appearance::Light, &policy.light), (Appearance::Dark, &policy.dark)] {
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let family_id = if split {
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selection
|
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.family
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.as_deref()
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.unwrap_or_else(|| crate::families::family_id(&selection.preset))
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} else {
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single
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};
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let variant = imported
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.get(family_id)
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.and_then(|pair: &(Option<Tokens>, Option<Tokens>)| {
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if kind == Appearance::Light {
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pair.0.clone()
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} else {
|
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pair.1.clone()
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}
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});
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let mut tokens = if let Some(tokens) = variant {
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tokens
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} else if let Some(id) = crate::families::variant(family_id, kind) {
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preset(id, kind)?
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} else {
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if !imported.contains_key(family_id)
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&& !matches!(family_id, "dracula" | "monochrome" | "monokai" | "ayu-light")
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{
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return Err(format!("Unknown theme family: {family_id}"));
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}
|
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if kind == appearance {
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let name = families
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.iter()
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.find(|family| family.id == family_id)
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.map_or(family_id, |family| family.name.as_str());
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fallback_note = Some(format!(
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"{name} has no {} variant. Using Ferese Blue for this appearance.",
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if kind == Appearance::Light { "light" } else { "dark" }
|
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));
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}
|
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preset(
|
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if kind == Appearance::Light {
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"ferese-blue-light"
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|
} else {
|
|
"ferese-blue"
|
|
},
|
|
kind,
|
|
)?
|
|
};
|
|
if !families.iter().any(|family| family.id == family_id) {
|
|
let light = crate::families::variant(family_id, Appearance::Light)
|
|
.and_then(|id| preset(id, Appearance::Light).ok());
|
|
let dark =
|
|
crate::families::variant(family_id, Appearance::Dark).and_then(|id| preset(id, Appearance::Dark).ok());
|
|
families.push(crate::families::Family {
|
|
id: family_id.into(),
|
|
name: family_id.into(),
|
|
light: light.as_ref().map(crate::families::Palette::from),
|
|
dark: dark.as_ref().map(crate::families::Palette::from),
|
|
});
|
|
}
|
|
|
|
let authored_base = tokens.colors.surface_base.clone();
|
|
let mut explicit_surfaces = std::collections::HashSet::new();
|
|
if root
|
|
.get("geometry")
|
|
.and_then(|value| value.get("shell_radius"))
|
|
.is_none()
|
|
&& let Some(radius) = document
|
|
.get("appearance.corner_radius")
|
|
.and_then(Value::as_f64)
|
|
.or_else(|| document.get("theme.geometry.top_bar_radius").and_then(Value::as_f64))
|
|
{
|
|
tokens.geometry.shell_radius = radius;
|
|
}
|
|
let mut value = serde_json::to_value(&tokens).map_err(|e| e.to_string())?;
|
|
for file in [&policy.file, &selection.file].into_iter().flatten() {
|
|
let path = theme_path(directory, file);
|
|
if !all_files.contains(&path) {
|
|
all_files.push(path.clone());
|
|
}
|
|
let source = if let Some(source) = sources.get(&path) {
|
|
source.clone()
|
|
} else {
|
|
let source = read(&path)?;
|
|
sources.insert(path.clone(), source.clone());
|
|
source
|
|
};
|
|
if source.len() > 60 * 1024 {
|
|
return Err(format!("{} exceeds 60 KiB", path.display()));
|
|
}
|
|
let layer = Document::parse(&source).map_err(|e| format!("{}: {e}", path.display()))?;
|
|
let layer = layer.get("theme").unwrap_or(layer.value());
|
|
for role in ["surface_raised", "application_background"] {
|
|
if layer.get("colors").and_then(|colors| colors.get(role)).is_some() {
|
|
explicit_surfaces.insert(role);
|
|
}
|
|
}
|
|
merge(&mut value, layer, "", &mut warnings, false)?;
|
|
}
|
|
merge(&mut value, &root, "", &mut warnings, true)?;
|
|
let mut overrides = selection.overrides.clone();
|
|
if !split && policy.family.is_some() {
|
|
for key in ["colors", "surface", "border", "focus_ring"] {
|
|
overrides.remove(key);
|
|
}
|
|
}
|
|
merge(&mut value, &Value::Object(overrides.clone()), "", &mut warnings, false)?;
|
|
tokens = serde_json::from_value(value).map_err(|e| e.to_string())?;
|
|
for layer in [&root, &Value::Object(overrides.clone())] {
|
|
for role in ["surface_raised", "application_background"] {
|
|
if layer.get("colors").and_then(|colors| colors.get(role)).is_some() {
|
|
explicit_surfaces.insert(role);
|
|
}
|
|
}
|
|
}
|
|
let base = rgba(&tokens.colors.surface_base)?;
|
|
let shade = if kind == Appearance::Light {
|
|
[0., 0., 0., 1.]
|
|
} else {
|
|
[1.; 4]
|
|
};
|
|
if tokens.colors.surface_base != authored_base && !explicit_surfaces.contains("surface_raised") {
|
|
tokens.colors.surface_raised = hex(blend(base, shade, 0.055));
|
|
}
|
|
if tokens.colors.surface_base != authored_base && !explicit_surfaces.contains("application_background") {
|
|
tokens.colors.application_background = hex(blend(base, shade, 0.025));
|
|
}
|
|
if let Some(accent) = &policy.accent {
|
|
tokens.colors.accent = accent.clone();
|
|
}
|
|
for path in [&mut tokens.background.path, &mut tokens.background.lock_path]
|
|
.into_iter()
|
|
.flatten()
|
|
{
|
|
*path = theme_path(directory, path);
|
|
}
|
|
validate(&tokens)?;
|
|
let requested_accent = tokens.colors.accent.clone();
|
|
transform(&mut tokens, &policy.accessibility, &mut warnings);
|
|
let theme = ResolvedTheme {
|
|
appearance: kind,
|
|
tokens,
|
|
requested_accent,
|
|
accessibility: policy.accessibility.clone(),
|
|
reduced_motion: document
|
|
.get("animations.reduced_motion")
|
|
.and_then(Value::as_bool)
|
|
.unwrap_or(false)
|
|
|| document.get("animations.enabled").and_then(Value::as_bool) == Some(false),
|
|
};
|
|
if kind == appearance {
|
|
selected = Some(theme);
|
|
}
|
|
}
|
|
warnings.sort();
|
|
warnings.dedup();
|
|
Ok(Candidate {
|
|
policy: policy.clone(),
|
|
theme: selected.expect("selected appearance"),
|
|
warnings,
|
|
files: all_files,
|
|
next_transition: if policy.mode == Mode::Auto { next } else { None },
|
|
families,
|
|
fallback_note,
|
|
})
|
|
}
|
|
|
|
pub fn theme_path(directory: &Path, path: &Path) -> PathBuf {
|
|
let path = if let Some(tail) = path.to_str().and_then(|path| path.strip_prefix("~/")) {
|
|
std::env::var_os("HOME")
|
|
.map(|home| PathBuf::from(home).join(tail))
|
|
.unwrap_or_else(|| directory.join(path))
|
|
} else if path.is_absolute() {
|
|
path.to_owned()
|
|
} else {
|
|
directory.join(path)
|
|
};
|
|
if let (Some(parent), Some(name)) = (path.parent(), path.file_name())
|
|
&& let Ok(parent) = parent.canonicalize()
|
|
{
|
|
return parent.join(name);
|
|
}
|
|
path
|
|
}
|
|
|
|
fn merge(
|
|
target: &mut Value,
|
|
layer: &Value,
|
|
prefix: &str,
|
|
warnings: &mut Vec<String>,
|
|
inline: bool,
|
|
) -> Result<(), String> {
|
|
let map = layer
|
|
.as_object()
|
|
.ok_or_else(|| format!("theme {prefix} must be a section"))?;
|
|
for (key, value) in map {
|
|
if prefix.is_empty()
|
|
&& inline
|
|
&& [
|
|
"mode",
|
|
"file",
|
|
"light",
|
|
"dark",
|
|
"schedule",
|
|
"accessibility",
|
|
"accent",
|
|
"family",
|
|
"split",
|
|
"custom_themes",
|
|
]
|
|
.contains(&key.as_str())
|
|
{
|
|
continue;
|
|
}
|
|
if prefix == "geometry" && key == "top_bar_radius" {
|
|
continue;
|
|
}
|
|
let path = if prefix.is_empty() {
|
|
key.clone()
|
|
} else {
|
|
format!("{prefix}.{key}")
|
|
};
|
|
let Some(current) = target.get_mut(key) else {
|
|
warnings.push(format!("Unknown theme token: {path}"));
|
|
continue;
|
|
};
|
|
if current.is_null() && path.ends_with(".gradient") && value.is_object() {
|
|
*current = json!({"from": "#3D7BE6", "to": "#3D7BE6", "angle": 0.0});
|
|
}
|
|
if current.is_object() {
|
|
merge(current, value, &path, warnings, inline)?;
|
|
} else {
|
|
*current = value.clone();
|
|
}
|
|
}
|
|
Ok(())
|
|
}
|
|
|
|
pub fn preset(name: &str, appearance: Appearance) -> Result<Tokens, String> {
|
|
if let Some(preset) = crate::presets::PRESETS.iter().find(|preset| preset.id == name) {
|
|
if preset.appearance != appearance {
|
|
return Err(format!("Preset {name} does not support {appearance:?}"));
|
|
}
|
|
let mut tokens = Tokens::default();
|
|
tokens.colors.surface_base = preset.base.into();
|
|
tokens.colors.surface_raised = preset.raised.into();
|
|
tokens.colors.application_background = preset.application_background.into();
|
|
tokens.colors.text_primary = preset.text.into();
|
|
tokens.colors.text_muted = preset.muted.into();
|
|
tokens.colors.accent = preset.accent.into();
|
|
tokens.colors.on_accent = hex(readable(rgba(preset.text)?, rgba(preset.accent)?, 4.5));
|
|
tokens.colors.border = preset.border.into();
|
|
tokens.colors.shadow = if appearance == Appearance::Light {
|
|
"#00000022"
|
|
} else {
|
|
"#00000055"
|
|
}
|
|
.into();
|
|
tokens.surface.bar = BarSurface {
|
|
background: preset.base.into(),
|
|
text_primary: preset.text.into(),
|
|
text_muted: preset.muted.into(),
|
|
};
|
|
tokens.material.opacity = preset.opacity;
|
|
tokens.material.blur_radius = preset.blur_radius;
|
|
tokens.material.tint_strength = preset.tint_strength;
|
|
tokens.shadow.soft.opacity = preset.shadow_opacity;
|
|
return Ok(tokens);
|
|
}
|
|
let mut t = Tokens::default();
|
|
let (base, text, muted, accent, border) = match name {
|
|
"monochrome" => ("#101012", "#EDEDF0", "#97979F", "#E5E5E5", "#FFFFFF18"),
|
|
"dracula" => ("#282A36", "#F8F8F2", "#A4ADCD", "#BD93F9", "#44475A"),
|
|
"ayu-light" => ("#F8F9FA", "#5C6166", "#596574", "#8F5300", "#C8CDD3"),
|
|
"monokai" => ("#272822", "#F8F8F2", "#B2B29F", "#A6E22E", "#414339"),
|
|
_ => return Err(format!("Unknown theme preset: {name}")),
|
|
};
|
|
let light_preset = name == "ayu-light";
|
|
if light_preset != (appearance == Appearance::Light) {
|
|
return Err(format!("Preset {name} does not support {appearance:?}"));
|
|
}
|
|
t.colors.surface_base = base.into();
|
|
let shade = if appearance == Appearance::Light {
|
|
[0., 0., 0., 1.]
|
|
} else {
|
|
[1.; 4]
|
|
};
|
|
t.colors.surface_raised = hex(blend(rgba(base).unwrap(), shade, 0.055));
|
|
t.colors.application_background = hex(blend(rgba(base).unwrap(), shade, 0.025));
|
|
t.colors.text_primary = text.into();
|
|
t.colors.text_muted = muted.into();
|
|
t.colors.accent = accent.into();
|
|
t.colors.border = border.into();
|
|
t.surface.bar = BarSurface {
|
|
background: base.into(),
|
|
text_primary: text.into(),
|
|
text_muted: muted.into(),
|
|
};
|
|
if light_preset {
|
|
t.material.opacity = 0.94;
|
|
t.material.tint_strength = 1.0;
|
|
t.material.blur_radius = 10.0;
|
|
t.shadow.soft.opacity = 0.12;
|
|
}
|
|
Ok(t)
|
|
}
|
|
|
|
pub fn authored_warnings(tokens: &Tokens) -> Vec<String> {
|
|
if let Err(error) = validate(tokens) {
|
|
return vec![error];
|
|
}
|
|
let mut warnings = Vec::new();
|
|
let surfaces = [
|
|
("surface-base", &tokens.colors.surface_base),
|
|
("surface-raised", &tokens.colors.surface_raised),
|
|
("application-background", &tokens.colors.application_background),
|
|
];
|
|
let check = |foreground: &str, background: &str, minimum: f64| {
|
|
let foreground = rgba(foreground).unwrap();
|
|
let background = rgba(background).unwrap();
|
|
contrast(composite(foreground, background), background) >= minimum
|
|
};
|
|
for (name, background) in surfaces {
|
|
for (role, foreground) in [
|
|
("text-primary", &tokens.colors.text_primary),
|
|
("text-muted", &tokens.colors.text_muted),
|
|
] {
|
|
if !check(foreground, background, 4.5) {
|
|
warnings.push(format!("Low contrast: {role} on {name}"));
|
|
}
|
|
}
|
|
if !check(&tokens.colors.accent, background, 3.) {
|
|
warnings.push(format!("Low contrast: accent on {name}"));
|
|
}
|
|
}
|
|
for (role, foreground) in [
|
|
("bar.text-primary", &tokens.surface.bar.text_primary),
|
|
("bar.text-muted", &tokens.surface.bar.text_muted),
|
|
] {
|
|
if !check(foreground, &tokens.surface.bar.background, 4.5) {
|
|
warnings.push(format!("Low contrast: {role}"));
|
|
}
|
|
}
|
|
if !check(&tokens.colors.on_accent, &tokens.colors.accent, 4.5) {
|
|
warnings.push("Low contrast: on-accent".into());
|
|
}
|
|
warnings
|
|
}
|
|
|
|
fn validate(tokens: &Tokens) -> Result<(), String> {
|
|
let value = serde_json::to_value(tokens).map_err(|e| e.to_string())?;
|
|
fn visit(value: &Value, path: &str) -> Result<(), String> {
|
|
match value {
|
|
Value::Object(map) => {
|
|
for (k, v) in map {
|
|
visit(v, &format!("{path}.{k}"))?;
|
|
}
|
|
}
|
|
Value::Number(n) => {
|
|
let n = n.as_f64().ok_or("invalid theme number")?;
|
|
if !n.is_finite() || (path != ".shadow.soft.offset_y" && n < 0.) {
|
|
return Err(format!("Invalid theme value {path}"));
|
|
}
|
|
if (path.ends_with("opacity") || path.ends_with("tint_strength")) && n > 1. {
|
|
return Err(format!("Invalid opacity {path}"));
|
|
}
|
|
}
|
|
Value::String(s)
|
|
if path.starts_with(".colors.")
|
|
|| path.starts_with(".surface.")
|
|
|| path.ends_with(".from")
|
|
|| path.ends_with(".to") =>
|
|
{
|
|
rgba(s)?;
|
|
}
|
|
_ => {}
|
|
}
|
|
Ok(())
|
|
}
|
|
visit(&value, "")?;
|
|
if !["solid", "translucent"].contains(&tokens.material.style.as_str()) {
|
|
return Err("Unknown material style".into());
|
|
}
|
|
if !["fill", "fit"].contains(&tokens.background.mode.as_str()) {
|
|
return Err("Unknown wallpaper mode".into());
|
|
}
|
|
if tokens.geometry.top_bar_height <= 0. {
|
|
return Err("top-bar-height must be positive".into());
|
|
}
|
|
if tokens.typography.font_family.len() > 128 {
|
|
return Err("font-family exceeds 128 bytes".into());
|
|
}
|
|
Ok(())
|
|
}
|
|
|
|
pub fn rgba(s: &str) -> Result<[f64; 4], String> {
|
|
let hex = s.strip_prefix('#').ok_or_else(|| format!("Invalid color: {s}"))?;
|
|
if !hex.is_ascii() || !matches!(hex.len(), 6 | 8) {
|
|
return Err(format!("Invalid color: {s}"));
|
|
}
|
|
let mut out = [1.; 4];
|
|
for (i, c) in out.iter_mut().enumerate().take(hex.len() / 2) {
|
|
*c = f64::from(u8::from_str_radix(&hex[i * 2..i * 2 + 2], 16).map_err(|_| format!("Invalid color: {s}"))?)
|
|
/ 255.;
|
|
}
|
|
Ok(out)
|
|
}
|
|
|
|
pub fn hex(c: [f64; 4]) -> String {
|
|
format!(
|
|
"#{:02X}{:02X}{:02X}{:02X}",
|
|
(c[0].clamp(0., 1.) * 255.).round() as u8,
|
|
(c[1].clamp(0., 1.) * 255.).round() as u8,
|
|
(c[2].clamp(0., 1.) * 255.).round() as u8,
|
|
(c[3].clamp(0., 1.) * 255.).round() as u8
|
|
)
|
|
}
|
|
|
|
pub fn luminance(c: [f64; 4]) -> f64 {
|
|
let linear = |v: f64| {
|
|
if v <= 0.04045 {
|
|
v / 12.92
|
|
} else {
|
|
((v + 0.055) / 1.055).powf(2.4)
|
|
}
|
|
};
|
|
0.2126 * linear(c[0]) + 0.7152 * linear(c[1]) + 0.0722 * linear(c[2])
|
|
}
|
|
|
|
pub fn contrast(a: [f64; 4], b: [f64; 4]) -> f64 {
|
|
let (a, b) = (luminance(a), luminance(b));
|
|
(a.max(b) + 0.05) / (a.min(b) + 0.05)
|
|
}
|
|
|
|
pub fn composite(fg: [f64; 4], bg: [f64; 4]) -> [f64; 4] {
|
|
let mut c = [0.; 4];
|
|
for i in 0..3 {
|
|
c[i] = fg[i] * fg[3] + bg[i] * (1. - fg[3]);
|
|
}
|
|
c[3] = 1.;
|
|
c
|
|
}
|
|
|
|
fn blend(a: [f64; 4], b: [f64; 4], p: f64) -> [f64; 4] {
|
|
std::array::from_fn(|i| a[i] + (b[i] - a[i]) * p)
|
|
}
|
|
|
|
pub fn readable(preferred: [f64; 4], background: [f64; 4], minimum: f64) -> [f64; 4] {
|
|
let mut preferred = preferred;
|
|
preferred[3] = 1.;
|
|
if contrast(preferred, background) >= minimum {
|
|
return preferred;
|
|
}
|
|
let black = [0., 0., 0., 1.];
|
|
let white = [1., 1., 1., 1.];
|
|
let target = if contrast(black, background) > contrast(white, background) {
|
|
black
|
|
} else {
|
|
white
|
|
};
|
|
for step in 1..=100 {
|
|
let c = blend(preferred, target, f64::from(step) / 100.);
|
|
if contrast(rgba(&hex(c)).expect("generated color"), background) >= minimum {
|
|
return c;
|
|
}
|
|
}
|
|
target
|
|
}
|
|
|
|
fn readable_across(mut preferred: [f64; 4], backgrounds: &[[f64; 4]], minimum: f64) -> [f64; 4] {
|
|
preferred[3] = 1.;
|
|
let score = |color| {
|
|
backgrounds
|
|
.iter()
|
|
.map(|background| contrast(color, *background))
|
|
.fold(f64::INFINITY, f64::min)
|
|
};
|
|
if score(preferred) >= minimum {
|
|
return preferred;
|
|
}
|
|
let black = [0., 0., 0., 1.];
|
|
let white = [1.; 4];
|
|
let target = if score(black) > score(white) { black } else { white };
|
|
for step in 1..=100 {
|
|
let color = rgba(&hex(blend(preferred, target, f64::from(step) / 100.))).unwrap();
|
|
if score(color) >= minimum {
|
|
return color;
|
|
}
|
|
}
|
|
target
|
|
}
|
|
|
|
fn transform(t: &mut Tokens, accessibility: &Accessibility, warnings: &mut Vec<String>) {
|
|
let surface = rgba(&t.colors.surface_base).expect("validated surface");
|
|
let mut requested = rgba(&t.colors.accent).expect("validated accent");
|
|
requested[3] = 1.;
|
|
let backgrounds = [
|
|
surface,
|
|
rgba(&t.surface.bar.background).expect("validated bar"),
|
|
rgba(&t.colors.surface_raised).expect("validated raised surface"),
|
|
rgba(&t.colors.application_background).expect("validated application background"),
|
|
];
|
|
let preferred = rgba(&t.colors.text_primary).expect("validated foreground");
|
|
let score = |color| {
|
|
backgrounds
|
|
.iter()
|
|
.map(|background| contrast(color, *background))
|
|
.fold(f64::INFINITY, f64::min)
|
|
};
|
|
let choose = |preserve_foreground: bool| {
|
|
let acceptable = |color| score(color) >= 3. && (!preserve_foreground || contrast(preferred, color) >= 4.5);
|
|
if acceptable(requested) {
|
|
return Some(requested);
|
|
}
|
|
let mut best = None;
|
|
let mut best_distance = f64::INFINITY;
|
|
for target in [[0., 0., 0., 1.], [1.; 4]] {
|
|
for step in 0..=1000 {
|
|
let distance = f64::from(step) / 1000.;
|
|
let color = rgba(&hex(blend(requested, target, distance))).unwrap();
|
|
if acceptable(color) && distance < best_distance {
|
|
best = Some(color);
|
|
best_distance = distance;
|
|
}
|
|
}
|
|
}
|
|
best
|
|
};
|
|
let adjusted = choose(true).or_else(|| choose(false)).unwrap_or_else(|| {
|
|
warnings.push("Accent cannot reach 3:1 contrast on all configured surfaces".into());
|
|
readable(requested, surface, 3.)
|
|
});
|
|
t.colors.accent = hex(adjusted);
|
|
t.colors.on_accent = hex(readable(preferred, adjusted, 4.5));
|
|
let minimum = if accessibility.increase_contrast { 7. } else { 4.5 };
|
|
let body = [surface, backgrounds[2], backgrounds[3]];
|
|
let bar = [backgrounds[1]; 3];
|
|
for (label, color, backgrounds) in [
|
|
("text-primary", &mut t.colors.text_primary, body),
|
|
("text-muted", &mut t.colors.text_muted, body),
|
|
("bar.text-primary", &mut t.surface.bar.text_primary, bar),
|
|
("bar.text-muted", &mut t.surface.bar.text_muted, bar),
|
|
] {
|
|
if accessibility.increase_contrast {
|
|
*color = hex(readable_across(
|
|
rgba(color).expect("validated text"),
|
|
&backgrounds,
|
|
minimum,
|
|
));
|
|
}
|
|
let c = rgba(color).expect("validated text");
|
|
if backgrounds
|
|
.iter()
|
|
.any(|background| contrast(composite(c, *background), *background) < minimum)
|
|
{
|
|
warnings.push(format!("Low contrast: {label}"));
|
|
}
|
|
}
|
|
if accessibility.increase_contrast {
|
|
t.colors.border = hex(readable(rgba(&t.colors.border).unwrap(), surface, 3.));
|
|
resolve_material_contrast(t, minimum);
|
|
}
|
|
if accessibility.reduce_transparency {
|
|
t.material.style = "solid".into();
|
|
t.material.opacity = 1.;
|
|
t.material.blur_radius = 0.;
|
|
}
|
|
}
|
|
|
|
fn resolve_material_contrast(tokens: &mut Tokens, minimum: f64) {
|
|
if tokens.material.style == "solid" {
|
|
return;
|
|
}
|
|
let surface = rgba(&tokens.colors.surface_base).unwrap();
|
|
let bar = rgba(&tokens.surface.bar.background).unwrap();
|
|
let raised = rgba(&tokens.colors.surface_raised).unwrap();
|
|
let app = rgba(&tokens.colors.application_background).unwrap();
|
|
let initial = tokens.material.opacity * tokens.material.tint_strength;
|
|
let readable = |backgrounds: &[[f64; 4]]| {
|
|
[[0., 0., 0., 1.], [1.; 4]].into_iter().any(|text| {
|
|
backgrounds
|
|
.iter()
|
|
.all(|background| contrast(text, *background) >= minimum)
|
|
})
|
|
};
|
|
let opacity = (0..=100)
|
|
.map(|step| initial + (1. - initial) * f64::from(step) / 100.)
|
|
.find(|opacity| {
|
|
let bounds = material_bounds(surface, *opacity);
|
|
readable(&[bounds[0], bounds[1], raised, app]) && readable(&material_bounds(bar, *opacity))
|
|
})
|
|
.unwrap_or(1.0);
|
|
tokens.material.opacity = tokens.material.opacity.max(opacity);
|
|
tokens.material.tint_strength = opacity / tokens.material.opacity.max(f64::EPSILON);
|
|
let bounds = material_bounds(surface, opacity);
|
|
let body = [bounds[0], bounds[1], raised, app];
|
|
let bar = material_bounds(bar, opacity);
|
|
for (color, backgrounds) in [
|
|
(&mut tokens.colors.text_primary, body.as_slice()),
|
|
(&mut tokens.colors.text_muted, body.as_slice()),
|
|
(&mut tokens.surface.bar.text_primary, bar.as_slice()),
|
|
(&mut tokens.surface.bar.text_muted, bar.as_slice()),
|
|
] {
|
|
*color = hex(readable_across(rgba(color).unwrap(), backgrounds, minimum));
|
|
}
|
|
}
|
|
|
|
fn material_bounds(mut surface: [f64; 4], opacity: f64) -> [[f64; 4]; 2] {
|
|
surface[3] = opacity;
|
|
[composite(surface, [0., 0., 0., 1.]), composite(surface, [1.; 4])]
|
|
}
|
|
|
|
fn material_foreground(preferred: [f64; 4], backgrounds: [[f64; 4]; 2]) -> [f64; 4] {
|
|
let black = [0., 0., 0., 1.];
|
|
let white = [1.; 4];
|
|
let (target, worst) = if contrast(black, backgrounds[0]) >= contrast(white, backgrounds[1]) {
|
|
(black, backgrounds[0])
|
|
} else {
|
|
(white, backgrounds[1])
|
|
};
|
|
let result = readable(preferred, worst, 4.5);
|
|
let outside = luminance(result) < luminance(backgrounds[0]) || luminance(result) > luminance(backgrounds[1]);
|
|
if outside
|
|
&& backgrounds
|
|
.iter()
|
|
.all(|background| contrast(rgba(&hex(result)).unwrap(), *background) >= 4.5)
|
|
{
|
|
result
|
|
} else {
|
|
target
|
|
}
|
|
}
|
|
|
|
impl ResolvedTheme {
|
|
/// Bound contrast across all backdrops instead of interpolating foregrounds.
|
|
pub fn transition(&self, to: &Self, progress: f64) -> Self {
|
|
if to.reduced_motion || self.accessibility != to.accessibility || progress >= 1.0 {
|
|
return to.clone();
|
|
}
|
|
if progress <= 0.0 || self == to {
|
|
return self.clone();
|
|
}
|
|
let p = progress.clamp(0., 1.);
|
|
let p = p * p * (3. - 2. * p);
|
|
let mut frame = to.clone();
|
|
let mix = |a: &str, b: &str| hex(blend(rgba(a).unwrap(), rgba(b).unwrap(), p));
|
|
frame.tokens.colors.surface_base = mix(&self.tokens.colors.surface_base, &to.tokens.colors.surface_base);
|
|
frame.tokens.colors.surface_raised = mix(&self.tokens.colors.surface_raised, &to.tokens.colors.surface_raised);
|
|
frame.tokens.colors.application_background = mix(
|
|
&self.tokens.colors.application_background,
|
|
&to.tokens.colors.application_background,
|
|
);
|
|
frame.tokens.colors.accent = mix(&self.tokens.colors.accent, &to.tokens.colors.accent);
|
|
frame.tokens.colors.border = mix(&self.tokens.colors.border, &to.tokens.colors.border);
|
|
frame.tokens.colors.shadow = mix(&self.tokens.colors.shadow, &to.tokens.colors.shadow);
|
|
frame.tokens.surface.bar.background =
|
|
mix(&self.tokens.surface.bar.background, &to.tokens.surface.bar.background);
|
|
frame.tokens.material.opacity =
|
|
self.tokens.material.opacity + (to.tokens.material.opacity - self.tokens.material.opacity) * p;
|
|
frame.tokens.material.tint_strength = self.tokens.material.tint_strength
|
|
+ (to.tokens.material.tint_strength - self.tokens.material.tint_strength) * p;
|
|
frame.tokens.shadow.soft.opacity =
|
|
self.tokens.shadow.soft.opacity + (to.tokens.shadow.soft.opacity - self.tokens.shadow.soft.opacity) * p;
|
|
let preferred = if p < 0.5 { self } else { to };
|
|
frame.appearance = preferred.appearance;
|
|
if self.appearance == to.appearance {
|
|
let body = [
|
|
rgba(&frame.tokens.colors.surface_base).unwrap(),
|
|
rgba(&frame.tokens.colors.surface_raised).unwrap(),
|
|
rgba(&frame.tokens.colors.application_background).unwrap(),
|
|
];
|
|
let minimum = if to.accessibility.increase_contrast { 7.0 } else { 4.5 };
|
|
frame.tokens.colors.text_primary = hex(readable_across(
|
|
rgba(&preferred.tokens.colors.text_primary).unwrap(),
|
|
&body,
|
|
minimum,
|
|
));
|
|
frame.tokens.colors.text_muted = hex(readable_across(
|
|
rgba(&preferred.tokens.colors.text_muted).unwrap(),
|
|
&body,
|
|
minimum,
|
|
));
|
|
let bar = rgba(&frame.tokens.surface.bar.background).unwrap();
|
|
frame.tokens.surface.bar.text_primary = hex(readable(
|
|
rgba(&preferred.tokens.surface.bar.text_primary).unwrap(),
|
|
bar,
|
|
minimum,
|
|
));
|
|
frame.tokens.surface.bar.text_muted = hex(readable(
|
|
rgba(&preferred.tokens.surface.bar.text_muted).unwrap(),
|
|
bar,
|
|
minimum,
|
|
));
|
|
frame.tokens.colors.on_accent = hex(readable(
|
|
rgba(&preferred.tokens.colors.on_accent).unwrap(),
|
|
rgba(&frame.tokens.colors.accent).unwrap(),
|
|
4.5,
|
|
));
|
|
return frame;
|
|
}
|
|
let base = rgba(&frame.tokens.colors.surface_base).unwrap();
|
|
let raised = rgba(&frame.tokens.colors.surface_raised).unwrap();
|
|
let app = rgba(&frame.tokens.colors.application_background).unwrap();
|
|
let minimum = [base, raised, app]
|
|
.into_iter()
|
|
.map(luminance)
|
|
.fold(f64::INFINITY, f64::min);
|
|
let maximum = [base, raised, app].into_iter().map(luminance).fold(0., f64::max);
|
|
if ((minimum + 0.05) / 0.05).max(1.05 / (maximum + 0.05)) < 4.5 {
|
|
frame.tokens.colors.surface_raised = frame.tokens.colors.surface_base.clone();
|
|
frame.tokens.colors.application_background = frame.tokens.colors.surface_base.clone();
|
|
}
|
|
let surface = rgba(&frame.tokens.colors.surface_base).unwrap();
|
|
let bar = rgba(&frame.tokens.surface.bar.background).unwrap();
|
|
let mut opacity = if frame.tokens.material.style == "solid" {
|
|
1.
|
|
} else {
|
|
frame.tokens.material.opacity * frame.tokens.material.tint_strength
|
|
};
|
|
for step in 0..=100 {
|
|
let candidate = opacity + (1. - opacity) * f64::from(step) / 100.;
|
|
let backgrounds = material_bounds(surface, candidate);
|
|
let raised = rgba(&frame.tokens.colors.surface_raised).unwrap();
|
|
let app = rgba(&frame.tokens.colors.application_background).unwrap();
|
|
let all = [backgrounds[0], backgrounds[1], raised, app];
|
|
let minimum = all.into_iter().map(luminance).fold(f64::INFINITY, f64::min);
|
|
let maximum = all.into_iter().map(luminance).fold(0., f64::max);
|
|
let bar = material_bounds(bar, candidate);
|
|
let readable = ((minimum + 0.05) / 0.05).max(1.05 / (maximum + 0.05)) >= 4.5
|
|
&& contrast([0., 0., 0., 1.], bar[0]).max(contrast([1.; 4], bar[1])) >= 4.5;
|
|
if readable {
|
|
opacity = candidate;
|
|
break;
|
|
}
|
|
}
|
|
if opacity > frame.tokens.material.opacity {
|
|
frame.tokens.material.opacity = opacity;
|
|
frame.tokens.material.tint_strength = 1.;
|
|
} else if frame.tokens.material.opacity > 0. {
|
|
frame.tokens.material.tint_strength = opacity / frame.tokens.material.opacity;
|
|
}
|
|
let surface = material_bounds(surface, opacity);
|
|
let bar = material_bounds(bar, opacity);
|
|
let raised = rgba(&frame.tokens.colors.surface_raised).unwrap();
|
|
let app = rgba(&frame.tokens.colors.application_background).unwrap();
|
|
let body_backgrounds = [surface[0], surface[1], raised, app];
|
|
let body_bounds = [
|
|
*body_backgrounds
|
|
.iter()
|
|
.min_by(|a, b| luminance(**a).total_cmp(&luminance(**b)))
|
|
.unwrap(),
|
|
*body_backgrounds
|
|
.iter()
|
|
.max_by(|a, b| luminance(**a).total_cmp(&luminance(**b)))
|
|
.unwrap(),
|
|
];
|
|
frame.tokens.colors.text_primary = hex(material_foreground(
|
|
rgba(&preferred.tokens.colors.text_primary).unwrap(),
|
|
body_bounds,
|
|
));
|
|
frame.tokens.colors.text_muted = hex(material_foreground(
|
|
rgba(&preferred.tokens.colors.text_muted).unwrap(),
|
|
body_bounds,
|
|
));
|
|
frame.tokens.surface.bar.text_primary = hex(material_foreground(
|
|
rgba(&preferred.tokens.surface.bar.text_primary).unwrap(),
|
|
bar,
|
|
));
|
|
frame.tokens.surface.bar.text_muted = hex(material_foreground(
|
|
rgba(&preferred.tokens.surface.bar.text_muted).unwrap(),
|
|
bar,
|
|
));
|
|
frame.tokens.colors.on_accent = hex(readable(
|
|
rgba(&preferred.tokens.colors.on_accent).unwrap(),
|
|
rgba(&frame.tokens.colors.accent).unwrap(),
|
|
4.5,
|
|
));
|
|
frame
|
|
}
|
|
}
|
|
|
|
pub type ImportedFamily = (crate::families::Family, (Option<Tokens>, Option<Tokens>), Vec<String>);
|
|
|
|
pub fn import_family(id: &str, source: &str) -> Result<ImportedFamily, String> {
|
|
let document = Document::parse(source).map_err(|e| e.to_string())?;
|
|
let root = document.get("theme").unwrap_or(document.value());
|
|
let name = root.get("name").and_then(Value::as_str).unwrap_or(id).to_owned();
|
|
let mut variants = [None, None];
|
|
let mut warnings = vec![];
|
|
for (index, (key, appearance)) in [("light", Appearance::Light), ("dark", Appearance::Dark)]
|
|
.into_iter()
|
|
.enumerate()
|
|
{
|
|
if let Some(layer) = root.get(key) {
|
|
let base = preset(
|
|
if appearance == Appearance::Light {
|
|
"ferese-blue-light"
|
|
} else {
|
|
"ferese-blue"
|
|
},
|
|
appearance,
|
|
)?;
|
|
let mut value = serde_json::to_value(base).map_err(|e| e.to_string())?;
|
|
merge(&mut value, layer, "", &mut warnings, false)?;
|
|
let tokens: Tokens = serde_json::from_value(value).map_err(|e| e.to_string())?;
|
|
validate(&tokens)?;
|
|
warnings.extend(authored_warnings(&tokens));
|
|
variants[index] = Some(tokens);
|
|
}
|
|
}
|
|
if variants.iter().all(Option::is_none) {
|
|
return Err("A theme file must declare a light and/or dark section; partial palettes are allowed.".into());
|
|
}
|
|
for key in root.as_object().ok_or("Theme file must be a section")?.keys() {
|
|
if !matches!(key.as_str(), "name" | "light" | "dark") {
|
|
warnings.push(format!("Unknown theme token: {key}"));
|
|
}
|
|
}
|
|
let [light, dark] = variants;
|
|
let family = crate::families::Family {
|
|
id: id.into(),
|
|
name,
|
|
light: light.as_ref().map(crate::families::Palette::from),
|
|
dark: dark.as_ref().map(crate::families::Palette::from),
|
|
};
|
|
Ok((family, (light, dark), warnings))
|
|
}
|
|
|
|
#[cfg(test)]
|
|
mod tests {
|
|
use super::*;
|
|
|
|
fn candidate(source: &str) -> Result<Candidate, String> {
|
|
resolve(
|
|
&Document::parse(source).unwrap(),
|
|
Path::new("/config/ferese"),
|
|
"2026-09-30T12:00:00Z".parse().unwrap(),
|
|
|_| Err("unexpected file read".into()),
|
|
)
|
|
}
|
|
|
|
#[test]
|
|
fn every_bundled_pair_has_authored_materials_and_readable_tokens() {
|
|
use crate::presets::PRESETS;
|
|
for entry in &PRESETS {
|
|
let tokens = preset(entry.id, entry.appearance).unwrap();
|
|
assert!(
|
|
authored_warnings(&tokens).is_empty(),
|
|
"{}: {:?}",
|
|
entry.id,
|
|
authored_warnings(&tokens)
|
|
);
|
|
let source = match entry.appearance {
|
|
Appearance::Light => format!("theme {{ mode \"light\"; light {{ preset \"{}\"; }}; }}", entry.id),
|
|
Appearance::Dark => format!("theme {{ mode \"dark\"; dark {{ preset \"{}\"; }}; }}", entry.id),
|
|
};
|
|
let resolved = candidate(&source).unwrap().theme;
|
|
assert_eq!(resolved.tokens.colors.surface_raised, tokens.colors.surface_raised);
|
|
assert_eq!(
|
|
resolved.tokens.colors.application_background,
|
|
tokens.colors.application_background
|
|
);
|
|
assert!(authored_warnings(&resolved.tokens).is_empty(), "{}", entry.id);
|
|
}
|
|
let dark: Vec<_> = PRESETS.iter().filter(|p| p.appearance == Appearance::Dark).collect();
|
|
let light: Vec<_> = PRESETS.iter().filter(|p| p.appearance == Appearance::Light).collect();
|
|
assert_eq!(dark.len(), 6);
|
|
assert_eq!(light.len(), 6);
|
|
for (dark, light) in dark.iter().zip(light) {
|
|
assert_eq!(dark.name, light.name);
|
|
assert_ne!(dark.base, light.base);
|
|
assert_ne!(dark.opacity, light.opacity);
|
|
assert_ne!(dark.tint_strength, light.tint_strength);
|
|
assert_ne!(dark.shadow_opacity, light.shadow_opacity);
|
|
}
|
|
}
|
|
|
|
#[test]
|
|
fn bundled_pairs_support_accessibility_and_custom_accents_on_every_surface() {
|
|
for entry in &crate::presets::PRESETS {
|
|
for increase in [false, true] {
|
|
for reduce in [false, true] {
|
|
for accent in ["#3D7BE6", "#E5E5E5", "#111821"] {
|
|
let kind = if entry.appearance == Appearance::Light {
|
|
"light"
|
|
} else {
|
|
"dark"
|
|
};
|
|
let source = format!(
|
|
r##"theme {{ mode "{kind}"; {kind} {{ preset "{}"; }}; accent "{accent}"; accessibility {{ increase-contrast #{increase}; reduce-transparency #{reduce}; }}; material {{ style "translucent"; }}; }}"##,
|
|
entry.id
|
|
);
|
|
let result = candidate(&source).unwrap();
|
|
assert!(result.warnings.is_empty(), "{}: {:?}", entry.id, result.warnings);
|
|
let theme = result.theme;
|
|
assert!(authored_warnings(&theme.tokens).is_empty(), "{}", entry.id);
|
|
if increase {
|
|
for background in [
|
|
&theme.tokens.colors.surface_base,
|
|
&theme.tokens.colors.surface_raised,
|
|
&theme.tokens.colors.application_background,
|
|
] {
|
|
for foreground in [&theme.tokens.colors.text_primary, &theme.tokens.colors.text_muted] {
|
|
assert!(
|
|
contrast(rgba(foreground).unwrap(), rgba(background).unwrap()) >= 7.,
|
|
"{}: {foreground} on {background}",
|
|
entry.id
|
|
);
|
|
}
|
|
}
|
|
}
|
|
if reduce {
|
|
assert_eq!(theme.tokens.material.style, "solid");
|
|
assert_eq!(theme.tokens.material.blur_radius, 0.);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
#[test]
|
|
fn selecting_a_family_resolves_each_variant_and_preserves_a_stored_pair() {
|
|
for (id, _, light, dark) in crate::families::BUILTINS {
|
|
for (mode, expected) in [("light", light), ("dark", dark)] {
|
|
let source = format!(
|
|
r#"theme {{ mode "{mode}"; family "{id}"; split #false; light {{ family "gruvbox"; }}; dark {{ family "catppuccin"; }}; }}"#
|
|
);
|
|
let resolved = candidate(&source).unwrap();
|
|
let appearance = if mode == "light" {
|
|
Appearance::Light
|
|
} else {
|
|
Appearance::Dark
|
|
};
|
|
assert_eq!(
|
|
resolved.theme.tokens.colors.surface_base,
|
|
preset(expected, appearance).unwrap().colors.surface_base
|
|
);
|
|
assert_eq!(resolved.policy.light.family.as_deref(), Some("gruvbox"));
|
|
assert_eq!(resolved.policy.dark.family.as_deref(), Some("catppuccin"));
|
|
assert_eq!(resolved.families.len(), 6);
|
|
}
|
|
}
|
|
let resolved = candidate(r#"theme { mode "light"; family "catppuccin"; split #true; light { family "gruvbox"; }; dark { family "everforest"; }; }"#).unwrap();
|
|
assert_eq!(
|
|
resolved.theme.tokens.colors.surface_base,
|
|
preset("gruvbox-light", Appearance::Light).unwrap().colors.surface_base
|
|
);
|
|
}
|
|
|
|
#[test]
|
|
fn single_variant_families_use_an_explicit_default_fallback() {
|
|
let resolved = candidate(r#"theme { mode "light"; family "dracula"; split #false; }"#).unwrap();
|
|
assert_eq!(
|
|
resolved.theme.tokens.colors.surface_base,
|
|
preset("ferese-blue-light", Appearance::Light)
|
|
.unwrap()
|
|
.colors
|
|
.surface_base
|
|
);
|
|
assert!(resolved.fallback_note.unwrap().contains("no light variant"));
|
|
assert!(
|
|
resolved
|
|
.families
|
|
.iter()
|
|
.any(|family| family.id == "dracula" && family.light.is_none())
|
|
);
|
|
let resolved = candidate(r#"theme { mode "dark"; family "dracula"; split #false; }"#).unwrap();
|
|
assert!(resolved.fallback_note.is_none());
|
|
assert_eq!(resolved.theme.tokens.colors.surface_base, "#282A36");
|
|
}
|
|
|
|
#[test]
|
|
fn imported_partial_families_are_validated_by_the_owner_and_watched() {
|
|
let document = Document::parse(
|
|
r#"theme { mode "light"; family "custom-test"; custom-themes { custom-test { file "test.kdl"; }; }; }"#,
|
|
)
|
|
.unwrap();
|
|
let resolved = resolve(
|
|
&document,
|
|
Path::new("/tmp"),
|
|
"2026-09-30T12:00:00Z".parse().unwrap(),
|
|
|_| Ok(r##"theme { name "Test"; light { colors { accent "#8F5300"; }; future-token 2; }; }"##.into()),
|
|
)
|
|
.unwrap();
|
|
assert_eq!(resolved.theme.requested_accent, "#8F5300");
|
|
let imported = resolved
|
|
.families
|
|
.iter()
|
|
.find(|family| family.id == "custom-test")
|
|
.unwrap();
|
|
assert_eq!(imported.name, "Test");
|
|
assert!(imported.dark.is_none());
|
|
assert!(resolved.files.contains(&PathBuf::from("/tmp/test.kdl")));
|
|
assert!(resolved.warnings.iter().any(|warning| warning.contains("future_token")));
|
|
assert!(
|
|
resolve(&document, Path::new("/tmp"), Timestamp::now(), |_| Ok(
|
|
r#"theme { light { colors { accent "invalid"; }; }; }"#.into()
|
|
))
|
|
.is_err()
|
|
);
|
|
assert!(import_family("custom-test", "colors { accent \"#FFFFFF\"; }").is_err());
|
|
}
|
|
|
|
#[test]
|
|
fn system_auto_is_context_driven_and_has_no_polling_deadline() {
|
|
let document = Document::parse(r#"theme { mode "auto"; schedule { source "system"; }; }"#).unwrap();
|
|
for appearance in [Appearance::Light, Appearance::Dark] {
|
|
let resolved = resolve_with_context(
|
|
&document,
|
|
Path::new("/tmp"),
|
|
Timestamp::now(),
|
|
&AutoContext {
|
|
system: Some(appearance),
|
|
},
|
|
|_| unreachable!(),
|
|
)
|
|
.unwrap();
|
|
assert_eq!(resolved.theme.appearance, appearance);
|
|
assert!(resolved.next_transition.is_none());
|
|
assert!(resolved.fallback_note.is_none());
|
|
}
|
|
let unavailable = resolve(&document, Path::new("/tmp"), Timestamp::now(), |_| unreachable!()).unwrap();
|
|
assert!(unavailable.fallback_note.unwrap().contains("unavailable"));
|
|
}
|
|
|
|
#[test]
|
|
fn schedule_handles_circular_intervals_and_equal_boundaries() {
|
|
let zone = TimeZone::get("Africa/Lagos").unwrap();
|
|
for (light, dark, now, expected) in [
|
|
("07:00", "19:00", "2026-09-30T05:59:00Z", Appearance::Dark),
|
|
("07:00", "19:00", "2026-09-30T06:00:00Z", Appearance::Light),
|
|
("19:00", "07:00", "2026-09-30T20:00:00Z", Appearance::Light),
|
|
("19:00", "07:00", "2026-09-30T12:00:00Z", Appearance::Dark),
|
|
] {
|
|
let schedule = Schedule {
|
|
source: AutoSource::Schedule,
|
|
light_at: light.into(),
|
|
dark_at: dark.into(),
|
|
..Schedule::default()
|
|
};
|
|
let now = now.parse().unwrap();
|
|
let (actual, next) = schedule.boundaries(now, &zone).unwrap();
|
|
assert_eq!(actual, expected);
|
|
assert!(next > now);
|
|
}
|
|
assert!(
|
|
Schedule {
|
|
light_at: "07:00".into(),
|
|
dark_at: "07:00".into(),
|
|
..Schedule::default()
|
|
}
|
|
.boundaries(Timestamp::now(), &zone)
|
|
.is_err()
|
|
);
|
|
}
|
|
|
|
#[test]
|
|
fn dst_uses_first_repeated_boundary_and_shifts_skipped_time_forward() {
|
|
let zone = TimeZone::get("America/New_York").unwrap();
|
|
let schedule = Schedule {
|
|
source: AutoSource::Schedule,
|
|
light_at: "02:30".into(),
|
|
dark_at: "19:00".into(),
|
|
..Schedule::default()
|
|
};
|
|
let (appearance, next) = schedule
|
|
.boundaries("2026-03-08T06:00:00Z".parse().unwrap(), &zone)
|
|
.unwrap();
|
|
assert_eq!(appearance, Appearance::Dark);
|
|
assert_eq!(next, "2026-03-08T07:30:00Z".parse::<Timestamp>().unwrap());
|
|
let schedule = Schedule {
|
|
source: AutoSource::Schedule,
|
|
light_at: "01:30".into(),
|
|
..schedule
|
|
};
|
|
for now in ["2026-11-01T05:30:00Z", "2026-11-01T06:00:00Z", "2026-11-01T06:30:00Z"] {
|
|
let (appearance, next) = schedule.boundaries(now.parse().unwrap(), &zone).unwrap();
|
|
assert_eq!(appearance, Appearance::Light);
|
|
assert_eq!(next, "2026-11-02T00:00:00Z".parse::<Timestamp>().unwrap());
|
|
}
|
|
}
|
|
|
|
#[test]
|
|
fn partial_files_merge_per_token_and_unknown_tokens_warn() {
|
|
let doc = Document::parse(
|
|
"theme { file \"themes/shared.kdl\"; light { file \"themes/light.kdl\"; }; mode \"light\"; }",
|
|
)
|
|
.unwrap();
|
|
let result = resolve(&doc, Path::new("/config/ferese"), Timestamp::now(), |path| {
|
|
match path.to_str().unwrap() {
|
|
"/config/ferese/themes/shared.kdl" => {
|
|
Ok("colors { accent \"#12AABB\"; text-primary \"#182234\"; }; future-token 1".into())
|
|
}
|
|
"/config/ferese/themes/light.kdl" => Ok("theme { colors { accent \"#315090\"; }; }".into()),
|
|
_ => panic!("wrong relative path"),
|
|
}
|
|
})
|
|
.unwrap();
|
|
assert_eq!(result.theme.requested_accent, "#315090");
|
|
assert_eq!(result.theme.tokens.colors.text_primary, "#182234");
|
|
assert_eq!(result.files.len(), 2);
|
|
assert!(result.warnings.iter().any(|s| s.contains("future_token")));
|
|
assert!(candidate("theme { colors { accent \"invalid\"; }; }").is_err());
|
|
}
|
|
|
|
#[test]
|
|
fn accessibility_matrix_resolves_contrast_materials_and_accent() {
|
|
for mode in ["light", "dark"] {
|
|
for increase in [false, true] {
|
|
for reduce in [false, true] {
|
|
for accent in ["#3D7BE6", "#F5F7FB", "#111821"] {
|
|
let source = format!(
|
|
"theme {{ mode \"{mode}\"; accent \"{accent}\"; accessibility {{ increase-contrast #{increase}; reduce-transparency #{reduce}; }}; material {{ style \"translucent\"; }}; }}"
|
|
);
|
|
let result = candidate(&source).unwrap();
|
|
let tokens = &result.theme.tokens;
|
|
let surface = rgba(&tokens.colors.surface_base).unwrap();
|
|
assert!(contrast(rgba(&tokens.colors.accent).unwrap(), surface) >= 3.);
|
|
assert!(
|
|
contrast(
|
|
rgba(&tokens.colors.on_accent).unwrap(),
|
|
rgba(&tokens.colors.accent).unwrap()
|
|
) >= 4.5
|
|
);
|
|
if increase {
|
|
assert!(contrast(rgba(&tokens.colors.text_primary).unwrap(), surface) >= 7.);
|
|
}
|
|
if reduce {
|
|
assert_eq!(tokens.material.style, "solid");
|
|
assert_eq!(tokens.material.opacity, 1.);
|
|
assert_eq!(tokens.material.blur_radius, 0.);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
#[test]
|
|
fn transition_text_remains_readable_at_fixed_steps_on_composited_surfaces() {
|
|
use crate::presets::PRESETS;
|
|
let darks = PRESETS.iter().filter(|entry| entry.appearance == Appearance::Dark);
|
|
let lights = PRESETS.iter().filter(|entry| entry.appearance == Appearance::Light);
|
|
for (dark_entry, light_entry) in darks.zip(lights) {
|
|
let dark = candidate(&format!(
|
|
r#"theme {{ mode "dark"; dark {{ preset "{}"; }}; material {{ style "translucent"; }}; }}"#,
|
|
dark_entry.id
|
|
))
|
|
.unwrap()
|
|
.theme;
|
|
let light = candidate(&format!(
|
|
r#"theme {{ mode "light"; light {{ preset "{}"; }}; material {{ style "translucent"; }}; }}"#,
|
|
light_entry.id
|
|
))
|
|
.unwrap()
|
|
.theme;
|
|
for (from, to) in [(&dark, &light), (&light, &dark)] {
|
|
for backdrop in [[0., 0., 0., 1.], [1., 1., 1., 1.], [0.2, 0.4, 0.7, 1.]] {
|
|
for step in 1..20 {
|
|
let frame = from.transition(to, f64::from(step) / 20.);
|
|
let mut surface = rgba(&frame.tokens.colors.surface_base).unwrap();
|
|
surface[3] = frame.tokens.material.opacity * frame.tokens.material.tint_strength;
|
|
let surface = composite(surface, backdrop);
|
|
for text in [&frame.tokens.colors.text_primary, &frame.tokens.colors.text_muted] {
|
|
assert!(
|
|
contrast(rgba(text).unwrap(), surface) >= 4.5,
|
|
"step {step}: {text}, contrast {}",
|
|
contrast(rgba(text).unwrap(), surface)
|
|
);
|
|
}
|
|
for background in [
|
|
&frame.tokens.colors.surface_raised,
|
|
&frame.tokens.colors.application_background,
|
|
] {
|
|
for text in [&frame.tokens.colors.text_primary, &frame.tokens.colors.text_muted] {
|
|
assert!(
|
|
contrast(rgba(text).unwrap(), rgba(background).unwrap()) >= 4.5,
|
|
"native app step {step}: {text} on {background}"
|
|
);
|
|
}
|
|
}
|
|
let mut bar = rgba(&frame.tokens.surface.bar.background).unwrap();
|
|
bar[3] = frame.tokens.material.opacity * frame.tokens.material.tint_strength;
|
|
let bar = composite(bar, backdrop);
|
|
for text in [
|
|
&frame.tokens.surface.bar.text_primary,
|
|
&frame.tokens.surface.bar.text_muted,
|
|
] {
|
|
assert!(contrast(rgba(text).unwrap(), bar) >= 4.5, "bar step {step}: {text}");
|
|
}
|
|
assert!(
|
|
contrast(
|
|
rgba(&frame.tokens.colors.on_accent).unwrap(),
|
|
rgba(&frame.tokens.colors.accent).unwrap()
|
|
) >= 4.5
|
|
);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
#[test]
|
|
fn high_contrast_covers_translucent_surfaces() {
|
|
for mode in ["light", "dark"] {
|
|
let resolved = candidate(&format!(r#"theme {{ family "tokyo-night"; mode "{mode}"; material {{ style "translucent"; opacity 0.52; }}; accessibility {{ increase-contrast #true; }}; }}"#)).unwrap().theme;
|
|
let opacity = resolved.tokens.material.opacity * resolved.tokens.material.tint_strength;
|
|
for (background, primary, muted) in [
|
|
(
|
|
&resolved.tokens.colors.surface_base,
|
|
&resolved.tokens.colors.text_primary,
|
|
&resolved.tokens.colors.text_muted,
|
|
),
|
|
(
|
|
&resolved.tokens.surface.bar.background,
|
|
&resolved.tokens.surface.bar.text_primary,
|
|
&resolved.tokens.surface.bar.text_muted,
|
|
),
|
|
] {
|
|
for backdrop in material_bounds(rgba(background).unwrap(), opacity) {
|
|
for text in [primary, muted] {
|
|
assert!(contrast(rgba(text).unwrap(), backdrop) >= 7.0);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
#[test]
|
|
fn transitions_preserve_endpoints_and_never_restyle_an_unchanged_theme() {
|
|
let from = candidate(
|
|
r#"theme { family "tokyo-night"; mode "dark"; material { style "translucent"; opacity 0.52; }; }"#,
|
|
)
|
|
.unwrap()
|
|
.theme;
|
|
let to =
|
|
candidate(r#"theme { family "gruvbox"; mode "dark"; material { style "translucent"; opacity 0.52; }; }"#)
|
|
.unwrap()
|
|
.theme;
|
|
assert_eq!(from.transition(&to, 0.0), from);
|
|
assert_eq!(from.transition(&to, 1.0), to);
|
|
for step in 0..=20 {
|
|
let p = f64::from(step) / 20.0;
|
|
assert_eq!(from.transition(&from, p), from);
|
|
let frame = from.transition(&to, p);
|
|
assert_eq!(frame.tokens.material.opacity, from.tokens.material.opacity);
|
|
let low = from.tokens.material.tint_strength.min(to.tokens.material.tint_strength);
|
|
let high = from.tokens.material.tint_strength.max(to.tokens.material.tint_strength);
|
|
assert!((low..=high).contains(&frame.tokens.material.tint_strength));
|
|
}
|
|
}
|
|
|
|
#[test]
|
|
fn accessibility_changes_publish_the_resolved_theme_without_a_transient_palette() {
|
|
let from = candidate(r#"theme { family "tokyo-night"; mode "dark"; }"#)
|
|
.unwrap()
|
|
.theme;
|
|
let to =
|
|
candidate(r#"theme { family "tokyo-night"; mode "dark"; accessibility { increase-contrast #true; }; }"#)
|
|
.unwrap()
|
|
.theme;
|
|
for step in 0..=20 {
|
|
assert_eq!(from.transition(&to, f64::from(step) / 20.0), to);
|
|
}
|
|
}
|
|
|
|
#[test]
|
|
fn reduced_motion_cuts_and_policy_does_not_follow_brightness() {
|
|
let mut light = candidate("theme { mode \"light\"; colors { surface-base \"#111111\"; }; }")
|
|
.unwrap()
|
|
.theme;
|
|
assert_eq!(light.appearance, Appearance::Light);
|
|
light.reduced_motion = true;
|
|
assert_eq!(ResolvedTheme::default().transition(&light, 0.), light);
|
|
}
|
|
}
|