sorry about monster commit
This commit is contained in:
galister
434
wlx-overlay-s/src/gui/panel/label.rs
Normal file
434
wlx-overlay-s/src/gui/panel/label.rs
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@@ -0,0 +1,434 @@
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use std::{
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cell::RefCell,
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fs, io,
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os::unix::fs::FileTypeExt,
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process::{Child, ChildStdout, Command, Stdio},
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rc::Rc,
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time::{Duration, Instant},
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};
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use chrono::Local;
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use chrono_tz::Tz;
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use interprocess::os::unix::fifo_file::create_fifo;
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use wgui::{
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drawing,
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event::{self, EventCallback, EventListenerCollection, ListenerHandleVec},
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i18n::Translation,
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layout::Layout,
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parser::{parse_color_hex, CustomAttribsInfoOwned},
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widget::label::WidgetLabel,
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};
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use crate::state::AppState;
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use super::helper::{expand_env_vars, read_label_from_pipe};
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pub(super) fn setup_custom_label<S>(
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layout: &mut Layout,
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attribs: &CustomAttribsInfoOwned,
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listeners: &mut EventListenerCollection<AppState, S>,
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listener_handles: &mut ListenerHandleVec,
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app: &AppState,
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) {
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let Some(source) = attribs.get_value("source") else {
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log::warn!("custom label with no source!");
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return;
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};
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let callback: EventCallback<AppState, S> = match source {
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"shell" => {
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let Some(exec) = attribs.get_value("exec") else {
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log::warn!("label with shell source but no exec attribute!");
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return;
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};
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let state = ShellLabelState {
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exec: exec.to_string(),
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mut_state: RefCell::new(ShellLabelMutableState {
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child: None,
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reader: None,
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next_try: Instant::now(),
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}),
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carry_over: RefCell::new(None),
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};
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Box::new(move |common, data, _app, _| {
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shell_on_tick(&state, common, data);
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Ok(())
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})
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}
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"fifo" => {
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let Some(path) = attribs.get_value("path") else {
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log::warn!("label with fifo source but no path attribute!");
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return;
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};
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let state = FifoLabelState {
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path: expand_env_vars(path),
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carry_over: RefCell::new(None),
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mut_state: RefCell::new(FifoLabelMutableState {
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reader: None,
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next_try: Instant::now(),
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}),
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};
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Box::new(move |common, data, _app, _| {
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pipe_on_tick(&state, common, data);
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Ok(())
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})
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}
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"battery" => {
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let Some(device) = attribs
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.get_value("device")
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.and_then(|s| s.parse::<usize>().ok())
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else {
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log::warn!("label with battery source but no device attribute!");
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return;
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};
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let state = BatteryLabelState {
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low_color: attribs
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.get_value("low_color")
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.and_then(|s| parse_color_hex(s))
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.unwrap_or(BAT_LOW),
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normal_color: attribs
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.get_value("normal_color")
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.and_then(|s| parse_color_hex(s))
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.unwrap_or(BAT_NORMAL),
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charging_color: attribs
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.get_value("charging_color")
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.and_then(|s| parse_color_hex(s))
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.unwrap_or(BAT_CHARGING),
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low_threshold: attribs
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.get_value("low_threshold")
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.and_then(|s| s.parse().ok())
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.unwrap_or(BAT_LOW_THRESHOLD),
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device,
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};
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Box::new(move |common, data, app, _| {
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battery_on_tick(&state, common, data, app);
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Ok(())
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})
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}
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"clock" => {
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let Some(display) = attribs.get_value("display") else {
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log::warn!("label with clock source but no display attribute!");
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return;
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};
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let format = match display {
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"name" => {
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let maybe_pretty_tz = attribs
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.get_value("timezone")
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.and_then(|tz| tz.parse::<usize>().ok())
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.and_then(|tz_idx| app.session.config.timezones.get(tz_idx))
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.and_then(|tz_name| {
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tz_name.split('/').next_back().map(|x| x.replace('_', " "))
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});
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let pretty_tz = match maybe_pretty_tz.as_ref() {
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Some(x) => x.as_str(),
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None => "Local",
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};
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let mut i18n = layout.state.globals.i18n();
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layout
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.state
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.widgets
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.get_as::<WidgetLabel>(attribs.widget_id)
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.unwrap()
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.set_text_simple(&mut *i18n, Translation::from_raw_text(&pretty_tz));
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// does not need to be dynamic
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return;
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}
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"date" => "%x",
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"dow" => "%A",
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"time" => {
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if app.session.config.clock_12h {
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"%I:%M %p"
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} else {
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"%H:%M"
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}
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}
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unk => {
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log::warn!("Unknown display value for clock label source: {unk}");
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return;
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}
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};
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let tz_str = attribs
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.get_value("timezone")
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.and_then(|tz| tz.parse::<usize>().ok())
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.and_then(|tz_idx| app.session.config.timezones.get(tz_idx));
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let state = ClockLabelState {
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timezone: tz_str.and_then(|tz| {
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tz.parse()
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.inspect_err(|e| log::warn!("Invalid timezone: {e:?}"))
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.ok()
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}),
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format: format.into(),
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};
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Box::new(move |common, data, _app, _| {
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clock_on_tick(&state, common, data);
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Ok(())
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})
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}
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"ipd" => Box::new(|common, data, app, _| {
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ipd_on_tick(common, data, app);
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Ok(())
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}),
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unk => {
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log::warn!("Unknown source value for label: {unk}");
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return;
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}
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};
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listeners.register(
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listener_handles,
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attribs.widget_id,
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wgui::event::EventListenerKind::InternalStateChange,
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callback,
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);
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}
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struct ShellLabelMutableState {
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child: Option<Child>,
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reader: Option<io::BufReader<ChildStdout>>,
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next_try: Instant,
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}
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struct ShellLabelState {
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exec: String,
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mut_state: RefCell<ShellLabelMutableState>,
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carry_over: RefCell<Option<String>>,
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}
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fn shell_on_tick(
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state: &ShellLabelState,
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common: &mut event::CallbackDataCommon,
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data: &mut event::CallbackData,
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) {
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let mut mut_state = state.mut_state.borrow_mut();
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if let Some(mut child) = mut_state.child.take() {
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match child.try_wait() {
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// not exited yet
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Ok(None) => {
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if let Some(text) = mut_state.reader.as_mut().and_then(|r| {
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read_label_from_pipe("child process", r, &mut *state.carry_over.borrow_mut())
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}) {
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let label = data.obj.get_as_mut::<WidgetLabel>().unwrap();
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label.set_text(common, Translation::from_raw_text(&text));
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}
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mut_state.child = Some(child);
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return;
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}
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// exited successfully
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Ok(Some(code)) if code.success() => {
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if let Some(text) = mut_state.reader.as_mut().and_then(|r| {
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read_label_from_pipe("child process", r, &mut *state.carry_over.borrow_mut())
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}) {
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let label = data.obj.get_as_mut::<WidgetLabel>().unwrap();
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label.set_text(common, Translation::from_raw_text(&text));
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}
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mut_state.child = None;
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return;
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}
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// exited with failure
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Ok(Some(code)) => {
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mut_state.child = None;
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mut_state.next_try = Instant::now() + Duration::from_secs(15);
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log::warn!("Label process exited with code {}", code);
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return;
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}
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// lost
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Err(_) => {
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mut_state.child = None;
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mut_state.next_try = Instant::now() + Duration::from_secs(15);
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log::warn!("Label child process lost.");
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return;
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}
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}
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} else {
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if mut_state.next_try > Instant::now() {
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return;
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}
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}
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match Command::new("sh")
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.arg("-c")
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.arg(&state.exec)
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.stdout(Stdio::piped())
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.spawn()
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{
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Ok(mut child) => {
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let stdout = child.stdout.take().unwrap();
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mut_state.child = Some(child);
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mut_state.reader = Some(io::BufReader::new(stdout));
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}
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Err(e) => {
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log::warn!("Failed to run shell script '{}': {e:?}", &state.exec)
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}
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}
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}
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struct FifoLabelMutableState {
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reader: Option<io::BufReader<fs::File>>,
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next_try: Instant,
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}
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struct FifoLabelState {
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path: String,
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mut_state: RefCell<FifoLabelMutableState>,
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carry_over: RefCell<Option<String>>,
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}
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impl FifoLabelState {
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fn try_remove_fifo(&self) -> anyhow::Result<()> {
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let meta = match fs::metadata(&self.path) {
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Ok(meta) => meta,
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Err(e) => {
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if fs::exists(&self.path).unwrap_or(true) {
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anyhow::bail!("Could not stat existing file at {}: {e:?}", &self.path);
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}
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return Ok(());
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}
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};
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if !meta.file_type().is_fifo() {
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anyhow::bail!("Existing file at {} is not a FIFO", &self.path);
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}
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if let Err(e) = fs::remove_file(&self.path) {
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anyhow::bail!("Unable to remove existing FIFO at {}: {e:?}", &self.path);
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};
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Ok(())
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}
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}
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impl Drop for FifoLabelState {
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fn drop(&mut self) {
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if let Err(e) = self.try_remove_fifo() {
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log::debug!("{e:?}");
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}
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}
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}
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fn pipe_on_tick(
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state: &FifoLabelState,
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common: &mut event::CallbackDataCommon,
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data: &mut event::CallbackData,
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) {
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let mut mut_state = state.mut_state.borrow_mut();
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let reader = match mut_state.reader.as_mut() {
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Some(f) => f,
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None => {
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if mut_state.next_try > Instant::now() {
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return;
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}
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if let Err(e) = state.try_remove_fifo() {
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mut_state.next_try = Instant::now() + Duration::from_secs(15);
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log::warn!("Requested FIFO path is taken: {e:?}");
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return;
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}
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if let Err(e) = create_fifo(&state.path, 0o777) {
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mut_state.next_try = Instant::now() + Duration::from_secs(15);
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log::warn!("Failed to create FIFO: {e:?}");
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return;
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}
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mut_state.reader = fs::File::open(&state.path)
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.inspect_err(|e| {
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log::warn!("Failed to open FIFO: {e:?}");
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mut_state.next_try = Instant::now() + Duration::from_secs(15);
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})
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.map(|f| io::BufReader::new(f))
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.ok();
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mut_state.reader.as_mut().unwrap()
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}
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};
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if let Some(text) =
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read_label_from_pipe(&state.path, reader, &mut *state.carry_over.borrow_mut())
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{
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let label = data.obj.get_as_mut::<WidgetLabel>().unwrap();
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label.set_text(common, Translation::from_raw_text(&text));
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}
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}
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const BAT_LOW: drawing::Color = drawing::Color::new(0.69, 0.38, 0.38, 1.);
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const BAT_NORMAL: drawing::Color = drawing::Color::new(0.55, 0.84, 0.79, 1.);
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const BAT_CHARGING: drawing::Color = drawing::Color::new(0.38, 0.50, 0.62, 1.);
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const BAT_LOW_THRESHOLD: u32 = 30;
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struct BatteryLabelState {
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device: usize,
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low_color: drawing::Color,
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normal_color: drawing::Color,
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charging_color: drawing::Color,
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low_threshold: u32,
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}
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fn battery_on_tick(
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state: &BatteryLabelState,
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common: &mut event::CallbackDataCommon,
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data: &mut event::CallbackData,
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app: &AppState,
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) {
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let device = app.input_state.devices.get(state.device);
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let tags = ["", "H", "L", "R", "T"];
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let label = data.obj.get_as_mut::<WidgetLabel>().unwrap();
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if let Some(device) = device {
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if let Some(soc) = device.soc {
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let soc = (soc * 100.).min(99.) as u32;
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let text = format!("{}{}", tags[device.role as usize], soc);
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let color = if device.charging {
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state.charging_color
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} else if soc < state.low_threshold {
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state.low_color
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} else {
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state.normal_color
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};
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label.set_color(common, color, false);
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label.set_text(common, Translation::from_raw_text(&text));
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return;
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}
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}
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label.set_text(common, Translation::default());
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}
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struct ClockLabelState {
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timezone: Option<Tz>,
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format: Rc<str>,
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}
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fn clock_on_tick(
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state: &ClockLabelState,
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common: &mut event::CallbackDataCommon,
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data: &mut event::CallbackData,
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) {
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let date_time = state.timezone.as_ref().map_or_else(
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|| format!("{}", Local::now().format(&state.format)),
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|tz| format!("{}", Local::now().with_timezone(tz).format(&state.format)),
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);
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let label = data.obj.get_as_mut::<WidgetLabel>().unwrap();
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label.set_text(common, Translation::from_raw_text(&date_time));
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}
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fn ipd_on_tick(
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common: &mut event::CallbackDataCommon,
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data: &mut event::CallbackData,
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app: &AppState,
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) {
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let text = app.input_state.ipd.to_string();
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let label = data.obj.get_as_mut::<WidgetLabel>().unwrap();
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label.set_text(common, Translation::from_raw_text(&text));
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}
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