gonna just plop tui.rs in here

Cargo.lock

@@ -279,6 +279,12 @@ version = "1.1.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "631ae5198c9be5e753e5cc215e1bd73c2b466a3565173db433f52bb9d3e66dba"
 
+[[package]]
+name = "cassowary"
+version = "0.3.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "df8670b8c7b9dae1793364eafadf7239c40d669904660c5960d74cfd80b46a53"
+
 [[package]]
 name = "cast5"
 version = "0.8.0"
@@ -434,31 +440,6 @@ dependencies = [
  "lazy_static",
 ]
 
-[[package]]
-name = "crossterm"
-version = "0.19.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "7c36c10130df424b2f3552fcc2ddcd9b28a27b1e54b358b45874f88d1ca6888c"
-dependencies = [
- "bitflags 1.2.1",
- "crossterm_winapi",
- "lazy_static",
- "libc",
- "mio",
- "parking_lot",
- "signal-hook",
- "winapi",
-]
-
-[[package]]
-name = "crossterm_winapi"
-version = "0.7.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "0da8964ace4d3e4a044fd027919b2237000b24315a37c916f61809f1ff2140b9"
-dependencies = [
- "winapi",
-]
-
 [[package]]
 name = "curve25519-dalek"
 version = "3.0.2"
@@ -1189,6 +1170,12 @@ dependencies = [
  "libc",
 ]
 
+[[package]]
+name = "numtoa"
+version = "0.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b8f8bdf33df195859076e54ab11ee78a1b208382d3a26ec40d142ffc1ecc49ef"
+
 [[package]]
 name = "objc"
 version = "0.2.7"
@@ -1250,7 +1237,6 @@ dependencies = [
  "async-trait",
  "cfg-if 1.0.0",
  "chrono",
- "crossterm",
  "fern",
  "format-bytes",
  "futures",
@@ -1265,11 +1251,13 @@ dependencies = [
  "rustls-connector",
  "serde",
  "structopt",
+ "termion",
  "tokio",
  "tokio-rustls",
  "tokio-stream",
  "tokio-util",
  "toml",
+ "tui",
  "webpki-roots",
  "xdg",
 ]
@@ -1634,6 +1622,15 @@ dependencies = [
  "bitflags 1.2.1",
 ]
 
+[[package]]
+name = "redox_termios"
+version = "0.1.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8440d8acb4fd3d277125b4bd01a6f38aee8d814b3b5fc09b3f2b825d37d3fe8f"
+dependencies = [
+ "redox_syscall 0.2.5",
+]
+
 [[package]]
 name = "redox_users"
 version = "0.3.5"
@@ -1899,17 +1896,6 @@ dependencies = [
  "opaque-debug 0.3.0",
 ]
 
-[[package]]
-name = "signal-hook"
-version = "0.1.17"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "7e31d442c16f047a671b5a71e2161d6e68814012b7f5379d269ebd915fac2729"
-dependencies = [
- "libc",
- "mio",
- "signal-hook-registry",
-]
-
 [[package]]
 name = "signal-hook-registry"
 version = "1.3.0"
@@ -2087,6 +2073,18 @@ dependencies = [
  "unicode-xid 0.2.1",
 ]
 
+[[package]]
+name = "termion"
+version = "1.5.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "077185e2eac69c3f8379a4298e1e07cd36beb962290d4a51199acf0fdc10607e"
+dependencies = [
+ "libc",
+ "numtoa",
+ "redox_syscall 0.2.5",
+ "redox_termios",
+]
+
 [[package]]
 name = "textwrap"
 version = "0.11.0"
@@ -2215,6 +2213,19 @@ dependencies = [
  "cfg-if 0.1.10",
 ]
 
+[[package]]
+name = "tui"
+version = "0.14.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9ced152a8e9295a5b168adc254074525c17ac4a83c90b2716274cc38118bddc9"
+dependencies = [
+ "bitflags 1.2.1",
+ "cassowary",
+ "termion",
+ "unicode-segmentation",
+ "unicode-width",
+]
+
 [[package]]
 name = "twofish"
 version = "0.4.0"

Cargo.toml

@@ -12,11 +12,11 @@ license = "GPL-3.0-or-later"
 members = ["imap", "smtp"]
 
 [dependencies]
+# crossterm = "0.19.0"
 anyhow = "1.0.38"
 async-trait = "0.1.42"
 cfg-if = "1.0.0"
 chrono = "0.4.19"
-crossterm = "0.19.0"
 fern = { version = "0.6.0", features = ["colored"] }
 format-bytes = "0.2.0"
 futures = "0.3.13"
@@ -34,8 +34,11 @@ tokio-rustls = "0.22.0"
 tokio-stream = { version = "0.1.3", features = ["sync"] }
 tokio-util = { version = "0.6.3", features = ["full"] }
 toml = "0.5.8"
+# tui = { version = "0.14.0", default-features = false, features = ["crossterm"] }
 webpki-roots = "0.21.0"
 xdg = "2.2.0"
+tui = "0.14.0"
+termion = "1.5.6"
 
 [dependencies.panorama-imap]
 path = "imap"

src/lib.rs

@@ -8,8 +8,8 @@
 
 #[macro_use]
 extern crate anyhow;
-#[macro_use]
-extern crate crossterm;
+// #[macro_use]
+// extern crate crossterm;
 #[macro_use]
 extern crate format_bytes;
 #[macro_use]

src/ui/events.rs

@@ -0,0 +1,95 @@
+use std::io;
+use std::sync::mpsc;
+use std::sync::{
+    atomic::{AtomicBool, Ordering},
+    Arc,
+};
+use std::thread;
+use std::time::Duration;
+
+use termion::event::Key;
+use termion::input::TermRead;
+
+pub enum Event<I> {
+    Input(I),
+    Tick,
+}
+
+/// A small event handler that wrap termion input and tick events. Each event
+/// type is handled in its own thread and returned to a common `Receiver`
+pub struct Events {
+    rx: mpsc::Receiver<Event<Key>>,
+    input_handle: thread::JoinHandle<()>,
+    ignore_exit_key: Arc<AtomicBool>,
+    tick_handle: thread::JoinHandle<()>,
+}
+
+#[derive(Debug, Clone, Copy)]
+pub struct Config {
+    pub exit_key: Key,
+    pub tick_rate: Duration,
+}
+
+impl Default for Config {
+    fn default() -> Config {
+        Config {
+            exit_key: Key::Char('q'),
+            tick_rate: Duration::from_millis(250),
+        }
+    }
+}
+
+impl Events {
+    pub fn new() -> Events {
+        Events::with_config(Config::default())
+    }
+
+    pub fn with_config(config: Config) -> Events {
+        let (tx, rx) = mpsc::channel();
+        let ignore_exit_key = Arc::new(AtomicBool::new(false));
+        let input_handle = {
+            let tx = tx.clone();
+            let ignore_exit_key = ignore_exit_key.clone();
+            thread::spawn(move || {
+                let stdin = io::stdin();
+                for evt in stdin.keys() {
+                    if let Ok(key) = evt {
+                        if let Err(err) = tx.send(Event::Input(key)) {
+                            eprintln!("{}", err);
+                            return;
+                        }
+                        if !ignore_exit_key.load(Ordering::Relaxed) && key == config.exit_key {
+                            return;
+                        }
+                    }
+                }
+            })
+        };
+        let tick_handle = {
+            thread::spawn(move || loop {
+                if tx.send(Event::Tick).is_err() {
+                    break;
+                }
+                thread::sleep(config.tick_rate);
+            })
+        };
+        Events {
+            rx,
+            ignore_exit_key,
+            input_handle,
+            tick_handle,
+        }
+    }
+
+    pub fn next(&self) -> Result<Event<Key>, mpsc::RecvError> {
+        self.rx.recv()
+    }
+
+    pub fn disable_exit_key(&mut self) {
+        self.ignore_exit_key.store(true, Ordering::Relaxed);
+    }
+
+    pub fn enable_exit_key(&mut self) {
+        self.ignore_exit_key.store(false, Ordering::Relaxed);
+    }
+}

src/ui/mod.rs

@@ -1,121 +1,62 @@
-//! UI module
+//! UI library
 
-mod drawbuf;
-mod table;
-mod tabs;
-mod widget;
+mod events;
 
-use std::fmt::Debug;
-use std::io::{Stdout, Write};
+use std::io::Stdout;
 use std::time::Duration;
 
 use anyhow::Result;
-use chrono::Local;
-use crossterm::{
-    cursor::{self, MoveTo},
-    event::{self, Event, KeyCode, KeyEvent},
-    style::{self, Color, SetBackgroundColor, SetForegroundColor},
-    terminal::{self, Clear, ClearType},
+use termion::{event::Key, screen::AlternateScreen};
+use tokio::sync::mpsc;
+use tui::{
+    backend::TermionBackend,
+    layout::{Constraint, Direction, Layout},
+    widgets::{Block, Borders, Widget},
+    Terminal,
 };
-use tokio::time;
 
-use crate::ExitSender;
+use self::events::{Config, Event, Events};
 
-use self::drawbuf::DrawBuf;
-use self::table::Table;
-use self::tabs::Tabs;
-use self::widget::Widget;
+/// Main entrypoint for the UI
+pub async fn run_ui(stdout: Stdout, exit_tx: mpsc::Sender<()>) -> Result<()> {
+    let stdout = AlternateScreen::from(stdout);
+    let backend = TermionBackend::new(stdout);
+    let mut terminal = Terminal::new(backend)?;
 
-const FRAME_DURATION: Duration = Duration::from_millis(20);
-
-/// Type alias for the screen object we're drawing to
-pub type Screen = Stdout;
-
-/// Rectangle
-#[derive(Copy, Clone, Debug)]
-#[allow(missing_docs)]
-pub struct Rect {
-    pub x: u16,
-    pub y: u16,
-    pub w: u16,
-    pub h: u16,
-}
-
-impl Rect {
-    /// Construct a new rectangle from (x, y) and (w, h)
-    pub fn new(x: u16, y: u16, w: u16, h: u16) -> Self {
-        Rect { x, y, w, h }
-    }
-}
-
-/// UI entrypoint.
-pub async fn run_ui(mut w: Stdout, exit: ExitSender) -> Result<()> {
-    execute!(w, cursor::Hide, terminal::EnterAlternateScreen)?;
-    terminal::enable_raw_mode()?;
-
-    let (term_width, term_height) = terminal::size()?;
-    let bounds = Rect::new(0, 0, term_width, term_height);
-    let mut drawbuf = DrawBuf::new(bounds);
-
-    let mut table = Table::default();
-    table.push_row(vec!["ur mom Lol!".to_owned()]);
-    table.push_row(vec!["hek".to_owned()]);
-
-    let mut tabs = Tabs::new();
-    tabs.add_tab("Mail", table);
+    let events = Events::with_config(Config {
+        tick_rate: Duration::from_millis(17),
+        ..Config::default()
+    });
 
     loop {
-        queue!(
-            w,
-            SetBackgroundColor(Color::Reset),
-            SetForegroundColor(Color::Reset),
-            Clear(ClearType::All),
-            MoveTo(0, 0),
-        )?;
+        terminal.draw(|f| {
+            let chunks = Layout::default()
+                .direction(Direction::Vertical)
+                .margin(1)
+                .constraints(
+                    [
+                        Constraint::Percentage(10),
+                        Constraint::Percentage(80),
+                        Constraint::Percentage(10),
+                    ]
+                    .as_ref(),
+                )
+                .split(f.size());
+            let block = Block::default().title("Block").borders(Borders::ALL);
+            f.render_widget(block, chunks[0]);
+            let block = Block::default().title("Block 2").borders(Borders::ALL);
+            f.render_widget(block, chunks[1]);
+        })?;
 
-        // let now = Local::now();
-        // println!("time {}", now);
-
-        let (term_width, term_height) = terminal::size()?;
-        let bounds = Rect::new(5, 5, term_width - 10, term_height - 10);
-        // table.draw(&mut w, bounds)?;
-        // tabs.draw(&mut w, bounds)?;
-        drawbuf.draw(&mut w)?;
-        w.flush()?;
-
-        // approx 60fps
-        time::sleep(FRAME_DURATION).await;
-
-        // check to see if there's even an event this frame. otherwise, just keep going
-        let event = if event::poll(FRAME_DURATION)? {
-            let event = event::read()?;
-            // table.update(&event);
-
-            if let Event::Key(KeyEvent {
-                code: KeyCode::Char('q'),
-                ..
-            }) = event
-            {
+        if let Event::Input(input) = events.next()? {
+            match input {
+                Key::Char('q') => {
                     break;
                 }
-
-            Some(event)
-        } else {
-            None
-        };
-
-        tabs.update(event);
+                _ => {}
+            }
+        }
     }
 
-    execute!(
-        w,
-        style::ResetColor,
-        cursor::Show,
-        terminal::LeaveAlternateScreen
-    )?;
-    terminal::disable_raw_mode()?;
-
-    exit.send(()).await?;
-    debug!("sent exit");
     Ok(())
 }

src/ui_custom/mod.rs

@@ -0,0 +1,121 @@
+//! UI module
+
+mod drawbuf;
+mod table;
+mod tabs;
+mod widget;
+
+use std::fmt::Debug;
+use std::io::{Stdout, Write};
+use std::time::Duration;
+
+use anyhow::Result;
+use chrono::Local;
+use crossterm::{
+    cursor::{self, MoveTo},
+    event::{self, Event, KeyCode, KeyEvent},
+    style::{self, Color, SetBackgroundColor, SetForegroundColor},
+    terminal::{self, Clear, ClearType},
+};
+use tokio::time;
+
+use crate::ExitSender;
+
+use self::drawbuf::DrawBuf;
+use self::table::Table;
+use self::tabs::Tabs;
+use self::widget::Widget;
+
+const FRAME_DURATION: Duration = Duration::from_millis(20);
+
+/// Type alias for the screen object we're drawing to
+pub type Screen = Stdout;
+
+/// Rectangle
+#[derive(Copy, Clone, Debug)]
+#[allow(missing_docs)]
+pub struct Rect {
+    pub x: u16,
+    pub y: u16,
+    pub w: u16,
+    pub h: u16,
+}
+
+impl Rect {
+    /// Construct a new rectangle from (x, y) and (w, h)
+    pub fn new(x: u16, y: u16, w: u16, h: u16) -> Self {
+        Rect { x, y, w, h }
+    }
+}
+
+/// UI entrypoint.
+pub async fn run_ui(mut w: Stdout, exit: ExitSender) -> Result<()> {
+    execute!(w, cursor::Hide, terminal::EnterAlternateScreen)?;
+    terminal::enable_raw_mode()?;
+
+    let (term_width, term_height) = terminal::size()?;
+    let bounds = Rect::new(0, 0, term_width, term_height);
+    let mut drawbuf = DrawBuf::new(bounds);
+
+    let mut table = Table::default();
+    table.push_row(vec!["ur mom Lol!".to_owned()]);
+    table.push_row(vec!["hek".to_owned()]);
+
+    let mut tabs = Tabs::new();
+    tabs.add_tab("Mail", table);
+
+    loop {
+        queue!(
+            w,
+            SetBackgroundColor(Color::Reset),
+            SetForegroundColor(Color::Reset),
+            Clear(ClearType::All),
+            MoveTo(0, 0),
+        )?;
+
+        // let now = Local::now();
+        // println!("time {}", now);
+
+        let (term_width, term_height) = terminal::size()?;
+        let bounds = Rect::new(5, 5, term_width - 10, term_height - 10);
+        // table.draw(&mut w, bounds)?;
+        // tabs.draw(&mut w, bounds)?;
+        drawbuf.draw(&mut w)?;
+        w.flush()?;
+
+        // approx 60fps
+        time::sleep(FRAME_DURATION).await;
+
+        // check to see if there's even an event this frame. otherwise, just keep going
+        let event = if event::poll(FRAME_DURATION)? {
+            let event = event::read()?;
+            // table.update(&event);
+
+            if let Event::Key(KeyEvent {
+                code: KeyCode::Char('q'),
+                ..
+            }) = event
+            {
+                break;
+            }
+
+            Some(event)
+        } else {
+            None
+        };
+
+        tabs.update(event);
+    }
+
+    execute!(
+        w,
+        style::ResetColor,
+        cursor::Show,
+        terminal::LeaveAlternateScreen
+    )?;
+    terminal::disable_raw_mode()?;
+
+    exit.send(()).await?;
+    debug!("sent exit");
+    Ok(())
+}