148 lines
4.5 KiB
Rust
148 lines
4.5 KiB
Rust
#![allow(dead_code)]
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pub mod theme;
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use super::syntax::TokenType;
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#[cfg(feature = "egui")]
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use egui::Color32;
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#[cfg(feature = "egui")]
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pub const ERROR_COLOR: Color32 = Color32::from_rgb(255, 0, 255);
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/// Array of default themes.
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pub const DEFAULT_THEMES: [ColorTheme; 1] = [ColorTheme::THEME];
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#[cfg(feature = "egui")]
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fn color_from_hex(hex: &str) -> Option<Color32> {
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if hex == "none" {
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return Some(Color32::from_rgba_premultiplied(255, 0, 255, 0));
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}
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let rgb = (1..hex.len())
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.step_by(2)
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.filter_map(|i| u8::from_str_radix(&hex[i..i + 2], 16).ok())
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.collect::<Vec<u8>>();
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let color = Color32::from_rgb(*rgb.first()?, *rgb.get(1)?, *rgb.get(2)?);
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Some(color)
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}
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#[derive(Hash, Copy, Clone, Debug, PartialEq, Eq, PartialOrd, Ord)]
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/// Colors in hexadecimal notation as used in HTML and CSS.
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pub struct ColorTheme {
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pub name: &'static str,
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pub dark: bool,
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pub bg: &'static str,
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pub cursor: &'static str,
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pub selection: &'static str,
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pub comments: &'static str,
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pub functions: &'static str,
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pub keywords: &'static str,
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pub literals: &'static str,
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pub numerics: &'static str,
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pub punctuation: &'static str,
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pub strs: &'static str,
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pub types: &'static str,
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pub special: &'static str,
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}
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impl Default for ColorTheme {
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fn default() -> Self {
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ColorTheme::THEME
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}
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}
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impl ColorTheme {
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pub fn name(&self) -> &str {
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self.name
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}
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pub fn is_dark(&self) -> bool {
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self.dark
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}
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#[cfg(feature = "egui")]
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pub fn bg(&self) -> Color32 {
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color_from_hex(self.bg).unwrap_or(ERROR_COLOR)
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}
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#[cfg(feature = "egui")]
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pub fn cursor(&self) -> Color32 {
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color_from_hex(self.cursor).unwrap_or(ERROR_COLOR)
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}
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#[cfg(feature = "egui")]
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pub fn selection(&self) -> Color32 {
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color_from_hex(self.selection).unwrap_or(ERROR_COLOR)
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}
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#[cfg(feature = "egui")]
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pub fn modify_style(&self, ui: &mut egui::Ui, fontsize: f32) {
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let style = ui.style_mut();
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style.visuals.widgets.noninteractive.bg_fill = self.bg();
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style.visuals.window_fill = self.bg();
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style.visuals.selection.stroke.color = self.cursor();
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style.visuals.selection.bg_fill = self.selection();
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style.visuals.extreme_bg_color = self.bg();
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style.override_font_id = Some(egui::FontId::monospace(fontsize));
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style.visuals.text_cursor.stroke.width = fontsize * 0.1;
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}
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pub const fn type_color_str(&self, ty: TokenType) -> &'static str {
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match ty {
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TokenType::Comment(_) => self.comments,
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TokenType::Function => self.functions,
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TokenType::Keyword => self.keywords,
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TokenType::Literal => self.literals,
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TokenType::Hyperlink => self.special,
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TokenType::Numeric(_) => self.numerics,
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TokenType::Punctuation(_) => self.punctuation,
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TokenType::Special => self.special,
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TokenType::Str(_) => self.strs,
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TokenType::Type => self.types,
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TokenType::Whitespace(_) | TokenType::Unknown => self.comments,
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}
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}
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#[cfg(feature = "egui")]
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pub fn type_color(&self, ty: TokenType) -> Color32 {
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match ty {
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TokenType::Comment(_) => color_from_hex(self.comments),
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TokenType::Function => color_from_hex(self.functions),
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TokenType::Keyword => color_from_hex(self.keywords),
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TokenType::Literal => color_from_hex(self.literals),
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TokenType::Hyperlink => color_from_hex(self.special),
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TokenType::Numeric(_) => color_from_hex(self.numerics),
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TokenType::Punctuation(_) => color_from_hex(self.punctuation),
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TokenType::Special => color_from_hex(self.special),
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TokenType::Str(_) => color_from_hex(self.strs),
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TokenType::Type => color_from_hex(self.types),
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TokenType::Whitespace(_) | TokenType::Unknown => {
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color_from_hex(self.comments)
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}
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}
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.unwrap_or(ERROR_COLOR)
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}
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pub fn monocolor(
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dark: bool,
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bg: &'static str,
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fg: &'static str,
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cursor: &'static str,
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selection: &'static str,
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) -> Self {
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ColorTheme {
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name: "monocolor",
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dark,
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bg,
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cursor,
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selection,
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literals: fg,
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numerics: fg,
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keywords: fg,
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functions: fg,
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punctuation: fg,
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types: fg,
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strs: fg,
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comments: fg,
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special: fg,
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}
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}
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}
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