breadbar/src/theme.rs
2026-05-19 12:31:26 +08:00

131 lines
4.3 KiB
Rust

use gtk4::CssProvider;
use serde::Deserialize;
use std::cell::RefCell;
thread_local! {
static PROVIDER: RefCell<Option<CssProvider>> = const { RefCell::new(None) };
static USER_PROVIDER: RefCell<Option<CssProvider>> = const { RefCell::new(None) };
}
#[derive(Deserialize)]
struct WalColors {
special: Special,
colors: Colors,
}
#[derive(Deserialize)]
struct Special {
background: String,
}
#[derive(Deserialize)]
struct Colors {
color0: String,
color1: String,
color15: String,
}
fn hex_to_rgba(hex: &str, alpha: f32) -> String {
let h = hex.trim_start_matches('#');
let r = u8::from_str_radix(&h[0..2], 16).unwrap_or(0);
let g = u8::from_str_radix(&h[2..4], 16).unwrap_or(0);
let b = u8::from_str_radix(&h[4..6], 16).unwrap_or(0);
format!("rgba({r},{g},{b},{alpha})")
}
fn load_css() -> String {
let home = std::env::var("HOME").unwrap_or_default();
let text =
std::fs::read_to_string(format!("{home}/.cache/wal/colors.json")).unwrap_or_default();
let (bg, surface, fg, accent) = if let Ok(wal) = serde_json::from_str::<WalColors>(&text) {
(
wal.special.background,
wal.colors.color0,
wal.colors.color15,
wal.colors.color1,
)
} else {
(
"#1e1e2e".to_string(),
"#181825".to_string(),
"#cdd6f4".to_string(),
"#89b4fa".to_string(),
)
};
format!(
"* {{ font-family: 'JetBrainsMono Nerd Font Mono', monospace; font-size: 14px; }}\
window.breadbar {{ background-color: {bg_rgba}; border-radius: 0; }}\
label {{ color: {fg}; }}\
.workspace-btn {{ background: transparent; color: {fg}; opacity: 0.45;\
border-radius: 0 0 8px 8px; border: none; outline: none; box-shadow: none;\
min-width: 24px; padding: 2px 8px; }}\
.workspace-btn:hover {{ opacity: 0.8; }}\
.workspace-btn.active {{ background: {accent}; opacity: 1; }}\
.stats-box {{ margin-right: 8px; }}\
.stat-pair {{ margin-right: 8px; }}\
.stat-icon {{ margin-right: 3px; }}\
.bt-icon {{ margin-right: 8px; }}\
window.breadbar-notification {{ background-color: alpha({bg_plain}, 0.95); }}\
.notification-card {{ background: {surface}; border-radius: 6px;\
padding: 10px; margin-bottom: 4px; }}\
.notification-summary {{ font-weight: bold; color: {fg}; }}\
.notification-app {{ color: {fg}; opacity: 0.6; }}\
.notification-body {{ color: {fg}; }}",
bg_plain = bg,
bg_rgba = hex_to_rgba(&bg, 0.92),
surface = surface,
fg = fg,
accent = accent,
)
}
pub fn apply() {
let css = load_css();
let display = gtk4::gdk::Display::default().expect("no display");
PROVIDER.with(|cell| {
let mut guard = cell.borrow_mut();
if let Some(p) = guard.as_ref() {
p.load_from_string(&css);
} else {
let p = CssProvider::new();
p.load_from_string(&css);
gtk4::style_context_add_provider_for_display(
&display,
&p,
gtk4::STYLE_PROVIDER_PRIORITY_APPLICATION,
);
*guard = Some(p);
}
});
// User override: ~/.config/breadbar/style.css — send SIGHUP to reload.
let home = std::env::var("HOME").unwrap_or_default();
let user_path = format!("{home}/.config/breadbar/style.css");
USER_PROVIDER.with(|cell| {
let mut guard = cell.borrow_mut();
match std::fs::read_to_string(&user_path) {
Ok(user_css) => {
if let Some(p) = guard.as_ref() {
p.load_from_string(&user_css);
} else {
let p = CssProvider::new();
p.load_from_string(&user_css);
gtk4::style_context_add_provider_for_display(
&display,
&p,
gtk4::STYLE_PROVIDER_PRIORITY_USER,
);
*guard = Some(p);
}
}
Err(_) => {
if let Some(p) = guard.as_ref() {
p.load_from_string("");
}
}
}
});
}