From 71dead51502f708e784966b72066e17d41e47ab8 Mon Sep 17 00:00:00 2001
From: unspeaker <hora.nqma@protonmail.com>
Date: Sun, 16 Mar 2025 23:33:27 +0200
Subject: [PATCH] group tui_engine and tui_content; cargo update

---
 Cargo.lock                                    | 98 +++++++++++--------
 input/src/input.rs                            | 36 +++++++
 tui/src/lib.rs                                |  8 +-
 tui/src/tui_content.rs                        |  9 ++
 .../_tui_focus.rs}                            |  0
 .../{tui_menu.rs => tui_content/_tui_menu.rs} |  0
 tui/src/{ => tui_content}/tui_color.rs        | 12 +++
 tui/src/{ => tui_content}/tui_file.rs         |  0
 tui/src/tui_engine.rs                         | 53 +++++-----
 tui/src/{ => tui_engine}/tui_buffer.rs        |  5 +
 tui/src/{ => tui_engine}/tui_input.rs         |  1 +
 tui/src/{ => tui_engine}/tui_output.rs        |  0
 tui/src/{ => tui_engine}/tui_perf.rs          |  0
 13 files changed, 150 insertions(+), 72 deletions(-)
 create mode 100644 input/src/input.rs
 rename tui/src/{tui_focus.rs => tui_content/_tui_focus.rs} (100%)
 rename tui/src/{tui_menu.rs => tui_content/_tui_menu.rs} (100%)
 rename tui/src/{ => tui_content}/tui_color.rs (99%)
 rename tui/src/{ => tui_content}/tui_file.rs (100%)
 rename tui/src/{ => tui_engine}/tui_buffer.rs (99%)
 rename tui/src/{ => tui_engine}/tui_input.rs (99%)
 rename tui/src/{ => tui_engine}/tui_output.rs (100%)
 rename tui/src/{ => tui_engine}/tui_perf.rs (100%)

diff --git a/Cargo.lock b/Cargo.lock
index 3ddc94d..0d7c644 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -102,12 +102,6 @@ version = "1.2.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "64fa3c856b712db6612c019f14756e64e4bcea13337a6b33b696333a9eaa2d06"
 
-[[package]]
-name = "byteorder"
-version = "1.5.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "1fd0f2584146f6f2ef48085050886acf353beff7305ebd1ae69500e27c67f64b"
-
 [[package]]
 name = "cassowary"
 version = "0.3.0"
@@ -177,7 +171,7 @@ dependencies = [
  "crossterm_winapi",
  "mio",
  "parking_lot",
- "rustix",
+ "rustix 0.38.44",
  "signal-hook",
  "signal-hook-mio",
  "winapi",
@@ -229,9 +223,9 @@ dependencies = [
 
 [[package]]
 name = "either"
-version = "1.14.0"
+version = "1.15.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b7914353092ddf589ad78f25c5c1c21b7f80b0ff8621e7c814c3485b5306da9d"
+checksum = "48c757948c5ede0e46177b7add2e67155f70e33c07fea8284df6576da70b3719"
 
 [[package]]
 name = "encode_unicode"
@@ -275,9 +269,9 @@ checksum = "3f9eec918d3f24069decb9af1554cad7c880e2da24a9afd88aca000531ab82c1"
 
 [[package]]
 name = "foldhash"
-version = "0.1.4"
+version = "0.1.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a0d2fde1f7b3d48b8395d5f2de76c18a528bd6a9cdde438df747bfcba3e05d6f"
+checksum = "d9c4f5dac5e15c24eb999c26181a6ca40b39fe946cbe4c263c7209467bc83af2"
 
 [[package]]
 name = "getrandom"
@@ -333,9 +327,9 @@ checksum = "b9e0384b61958566e926dc50660321d12159025e767c18e043daf26b70104c39"
 
 [[package]]
 name = "indoc"
-version = "2.0.5"
+version = "2.0.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b248f5224d1d606005e02c97f5aa4e88eeb230488bcc03bc9ca4d7991399f2b5"
+checksum = "f4c7245a08504955605670dbf141fceab975f15ca21570696aebe9d2e71576bd"
 
 [[package]]
 name = "instability"
@@ -370,9 +364,9 @@ dependencies = [
 
 [[package]]
 name = "itoa"
-version = "1.0.14"
+version = "1.0.15"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d75a2a4b1b190afb6f5425f10f6a8f959d2ea0b9c2b1d79553551850539e4674"
+checksum = "4a5f13b858c8d314ee3e8f639011f7ccefe71f97f96e50151fb991f267928e2c"
 
 [[package]]
 name = "js-sys"
@@ -419,9 +413,9 @@ checksum = "bbd2bcb4c963f2ddae06a2efc7e9f3591312473c50c6685e1f298068316e66fe"
 
 [[package]]
 name = "libc"
-version = "0.2.170"
+version = "0.2.171"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "875b3680cb2f8f71bdcf9a30f38d48282f5d3c95cbf9b3fa57269bb5d5c06828"
+checksum = "c19937216e9d3aa9956d9bb8dfc0b0c8beb6058fc4f7a4dc4d850edf86a237d6"
 
 [[package]]
 name = "linux-raw-sys"
@@ -429,6 +423,12 @@ version = "0.4.15"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "d26c52dbd32dccf2d10cac7725f8eae5296885fb5703b261f7d0a0739ec807ab"
 
+[[package]]
+name = "linux-raw-sys"
+version = "0.9.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "fe7db12097d22ec582439daf8618b8fdd1a7bef6270e9af3b1ebcd30893cf413"
+
 [[package]]
 name = "lock_api"
 version = "0.4.12"
@@ -501,9 +501,9 @@ dependencies = [
 
 [[package]]
 name = "once_cell"
-version = "1.20.3"
+version = "1.21.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "945462a4b81e43c4e3ba96bd7b49d834c6f61198356aa858733bc4acf3cbe62e"
+checksum = "d75b0bedcc4fe52caa0e03d9f1151a323e4aa5e2d78ba3580400cd3c9e2bc4bc"
 
 [[package]]
 name = "palette"
@@ -603,9 +603,9 @@ dependencies = [
 
 [[package]]
 name = "ppv-lite86"
-version = "0.2.20"
+version = "0.2.21"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "77957b295656769bb8ad2b6a6b09d897d94f05c41b069aede1fcdaa675eaea04"
+checksum = "85eae3c4ed2f50dcfe72643da4befc30deadb458a9b590d720cde2f2b1e97da9"
 dependencies = [
  "zerocopy",
 ]
@@ -673,9 +673,9 @@ checksum = "a1d01941d82fa2ab50be1e79e6714289dd7cde78eba4c074bc5a4374f650dfe0"
 
 [[package]]
 name = "quote"
-version = "1.0.39"
+version = "1.0.40"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c1f1914ce909e1658d9907913b4b91947430c7d9be598b15a1912935b8c04801"
+checksum = "1885c039570dc00dcb4ff087a89e185fd56bae234ddc7f056a945bf36467248d"
 dependencies = [
  "proc-macro2",
 ]
@@ -742,9 +742,9 @@ dependencies = [
 
 [[package]]
 name = "raw-cpuid"
-version = "11.4.0"
+version = "11.5.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "529468c1335c1c03919960dfefdb1b3648858c20d7ec2d0663e728e4a717efbc"
+checksum = "c6df7ab838ed27997ba19a4664507e6f82b41fe6e20be42929332156e5e85146"
 dependencies = [
  "bitflags",
 ]
@@ -779,15 +779,28 @@ dependencies = [
  "bitflags",
  "errno",
  "libc",
- "linux-raw-sys",
+ "linux-raw-sys 0.4.15",
+ "windows-sys 0.59.0",
+]
+
+[[package]]
+name = "rustix"
+version = "1.0.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f7178faa4b75a30e269c71e61c353ce2748cf3d76f0c44c393f4e60abf49b825"
+dependencies = [
+ "bitflags",
+ "errno",
+ "libc",
+ "linux-raw-sys 0.9.3",
  "windows-sys 0.59.0",
 ]
 
 [[package]]
 name = "rustversion"
-version = "1.0.19"
+version = "1.0.20"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f7c45b9784283f1b2e7fb61b42047c2fd678ef0960d4f6f1eba131594cc369d4"
+checksum = "eded382c5f5f786b989652c49544c4877d9f015cc22e145a5ea8ea66c2921cd2"
 
 [[package]]
 name = "rusty-fork"
@@ -803,9 +816,9 @@ dependencies = [
 
 [[package]]
 name = "ryu"
-version = "1.0.19"
+version = "1.0.20"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "6ea1a2d0a644769cc99faa24c3ad26b379b786fe7c36fd3c546254801650e6dd"
+checksum = "28d3b2b1366ec20994f1fd18c3c594f05c5dd4bc44d8bb0c1c632c8d6829481f"
 
 [[package]]
 name = "scopeguard"
@@ -891,9 +904,9 @@ dependencies = [
 
 [[package]]
 name = "syn"
-version = "2.0.99"
+version = "2.0.100"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e02e925281e18ffd9d640e234264753c43edc62d64b2d4cf898f1bc5e75f3fc2"
+checksum = "b09a44accad81e1ba1cd74a32461ba89dee89095ba17b32f5d03683b1b1fc2a0"
 dependencies = [
  "proc-macro2",
  "quote",
@@ -902,15 +915,14 @@ dependencies = [
 
 [[package]]
 name = "tempfile"
-version = "3.17.1"
+version = "3.19.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "22e5a0acb1f3f55f65cc4a866c361b2fb2a0ff6366785ae6fbb5f85df07ba230"
+checksum = "488960f40a3fd53d72c2a29a58722561dee8afdd175bd88e3db4677d7b2ba600"
 dependencies = [
- "cfg-if",
  "fastrand",
  "getrandom 0.3.1",
  "once_cell",
- "rustix",
+ "rustix 1.0.2",
  "windows-sys 0.59.0",
 ]
 
@@ -949,6 +961,7 @@ version = "0.1.0"
 dependencies = [
  "proptest",
  "proptest-derive",
+ "tengri",
  "tengri_dsl",
  "tengri_tui",
 ]
@@ -1014,9 +1027,9 @@ checksum = "eaea85b334db583fe3274d12b4cd1880032beab409c0d774be044d4480ab9a94"
 
 [[package]]
 name = "unicode-ident"
-version = "1.0.17"
+version = "1.0.18"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "00e2473a93778eb0bad35909dff6a10d28e63f792f16ed15e404fca9d5eeedbe"
+checksum = "5a5f39404a5da50712a4c1eecf25e90dd62b613502b7e925fd4e4d19b5c96512"
 
 [[package]]
 name = "unicode-segmentation"
@@ -1253,19 +1266,18 @@ dependencies = [
 
 [[package]]
 name = "zerocopy"
-version = "0.7.35"
+version = "0.8.23"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "1b9b4fd18abc82b8136838da5d50bae7bdea537c574d8dc1a34ed098d6c166f0"
+checksum = "fd97444d05a4328b90e75e503a34bad781f14e28a823ad3557f0750df1ebcbc6"
 dependencies = [
- "byteorder",
  "zerocopy-derive",
 ]
 
 [[package]]
 name = "zerocopy-derive"
-version = "0.7.35"
+version = "0.8.23"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "fa4f8080344d4671fb4e831a13ad1e68092748387dfc4f55e356242fae12ce3e"
+checksum = "6352c01d0edd5db859a63e2605f4ea3183ddbd15e2c4a9e7d32184df75e4f154"
 dependencies = [
  "proc-macro2",
  "quote",
diff --git a/input/src/input.rs b/input/src/input.rs
new file mode 100644
index 0000000..24dd927
--- /dev/null
+++ b/input/src/input.rs
@@ -0,0 +1,36 @@
+use crate::*;
+use std::time::Duration;
+use std::thread::JoinHandle;
+
+/// Event source
+pub trait Input: Send + Sync + Sized {
+    /// Type of input event
+    type Event;
+    /// Result of handling input
+    type Handled; // TODO: make this an Option<Box dyn Command<Self>> containing the undo
+    /// Currently handled event
+    fn event (&self) -> &Self::Event;
+    /// Whether component should exit
+    fn is_done (&self) -> bool;
+    /// Mark component as done
+    fn done (&self);
+}
+
+/// Input thread entrypoint.
+pub trait InputRun<T> {
+    fn run_input (engine: T, state: Self, timer: Duration) -> JoinHandle<()>;
+}
+
+/// Handle input through a mutable reference.
+pub trait Handle<E: Input>: Send + Sync {
+    fn handle (&mut self, _input: &E) -> Perhaps<E::Handled> {
+        Ok(None)
+    }
+}
+
+/// Handle input through an immutable reference (e.g. [Arc<RwLock>] or [Arc<Mutex>])
+pub trait HandleRef<E: Input>: Send + Sync {
+    fn handle (&self, _input: &E) -> Perhaps<E::Handled> {
+        Ok(None)
+    }
+}
diff --git a/tui/src/lib.rs b/tui/src/lib.rs
index 33f3a6f..6ac4926 100644
--- a/tui/src/lib.rs
+++ b/tui/src/lib.rs
@@ -1,11 +1,5 @@
-mod tui_buffer;  pub use self::tui_buffer::*;
-mod tui_color;   pub use self::tui_color::*;
-mod tui_content; pub use self::tui_content::*;
 mod tui_engine;  pub use self::tui_engine::*;
-mod tui_file;    pub use self::tui_file::*;
-mod tui_input;   pub use self::tui_input::*;
-mod tui_output;  pub use self::tui_output::*;
-mod tui_perf;    pub use self::tui_perf::*;
+mod tui_content; pub use self::tui_content::*;
 
 pub use ::tengri_input as input;
 pub(crate) use ::tengri_input::*;
diff --git a/tui/src/tui_content.rs b/tui/src/tui_content.rs
index 5db1dac..66d7abf 100644
--- a/tui/src/tui_content.rs
+++ b/tui/src/tui_content.rs
@@ -1,6 +1,10 @@
 use crate::*;
 use crate::Color::*;
 use ratatui::prelude::Position;
+
+mod tui_color; pub use self::tui_color::*;
+mod tui_file;  pub use self::tui_file::*;
+
 macro_rules! impl_content_layout_render {
     ($Output:ty: |$self:ident: $Struct:ty, $to:ident| layout = $layout:expr; render = $render:expr) => {
         impl Content<$Output> for $Struct {
@@ -13,19 +17,24 @@ impl_content_layout_render!(TuiOut: |self: &str, to|
     layout = to.center_xy([self.chars().count() as u16, 1]);
     render = {let [x, y, ..] = Content::layout(self, to.area());
               to.blit(self, x, y, None)});
+
 impl_content_layout_render!(TuiOut: |self: String, to|
     layout = to.center_xy([self.chars().count() as u16, 1]);
     render = {let [x, y, ..] = Content::layout(self, to.area());
               to.blit(self, x, y, None)});
+
 impl_content_layout_render!(TuiOut: |self: std::sync::RwLock<String>, to|
     layout = Content::<TuiOut>::layout(&self.read().unwrap(), to);
     render = Content::<TuiOut>::render(&self.read().unwrap(), to));
+
 impl_content_layout_render!(TuiOut: |self: std::sync::RwLockReadGuard<'_, String>, to|
     layout = Content::<TuiOut>::layout(&**self, to);
     render = Content::<TuiOut>::render(&**self, to));
+
 impl_content_layout_render!(TuiOut: |self: Arc<str>, to|
     layout = to.center_xy([self.chars().count() as u16, 1]);
     render = to.blit(self, to.area.x(), to.area.y(), None));
+
 impl<T: Content<TuiOut>> Content<TuiOut> for std::sync::Arc<T> {
     fn layout (&self, to: [u16;4]) -> [u16;4] {
         Content::<TuiOut>::layout(&**self, to)
diff --git a/tui/src/tui_focus.rs b/tui/src/tui_content/_tui_focus.rs
similarity index 100%
rename from tui/src/tui_focus.rs
rename to tui/src/tui_content/_tui_focus.rs
diff --git a/tui/src/tui_menu.rs b/tui/src/tui_content/_tui_menu.rs
similarity index 100%
rename from tui/src/tui_menu.rs
rename to tui/src/tui_content/_tui_menu.rs
diff --git a/tui/src/tui_color.rs b/tui/src/tui_content/tui_color.rs
similarity index 99%
rename from tui/src/tui_color.rs
rename to tui/src/tui_content/tui_color.rs
index cdf278e..6fd765c 100644
--- a/tui/src/tui_color.rs
+++ b/tui/src/tui_content/tui_color.rs
@@ -1,5 +1,6 @@
 use crate::*;
 use rand::{thread_rng, distributions::uniform::UniformSampler};
+
 impl Tui {
     pub const fn null     () -> Color { Color::Reset }
     pub const fn g   (g: u8) -> Color { Color::Rgb(g, g, g) }
@@ -23,7 +24,9 @@ impl Tui {
     //fn ti1 () -> Color { Color::Rgb(150, 160, 90) }
     //fn ti2 () -> Color { Color::Rgb(120, 130, 100) }
 }
+
 pub trait HasColor { fn color (&self) -> ItemColor; }
+
 #[macro_export] macro_rules! has_color {
     (|$self:ident:$Struct:ident$(<$($L:lifetime),*$($T:ident$(:$U:path)?),*>)?|$cb:expr) => {
         impl $(<$($L),*$($T $(: $U)?),*>)? HasColor for $Struct $(<$($L),*$($T),*>)? {
@@ -31,17 +34,22 @@ pub trait HasColor { fn color (&self) -> ItemColor; }
         }
     }
 }
+
 /// A color in OKHSL and RGB representations.
 #[derive(Debug, Default, Copy, Clone, PartialEq)] pub struct ItemColor {
     pub okhsl: Okhsl<f32>,
     pub rgb:   Color,
 }
+
 from!(|okhsl: Okhsl<f32>|ItemColor = Self { okhsl, rgb: okhsl_to_rgb(okhsl) });
+
 pub fn okhsl_to_rgb (color: Okhsl<f32>) -> Color {
     let Srgb { red, green, blue, .. }: Srgb<f32> = Srgb::from_color_unclamped(color);
     Color::Rgb((red   * 255.0) as u8, (green * 255.0) as u8, (blue  * 255.0) as u8,)
 }
+
 from!(|rgb: Color|ItemColor = Self { rgb, okhsl: rgb_to_okhsl(rgb) });
+
 pub fn rgb_to_okhsl (color: Color) -> Okhsl<f32> {
     if let Color::Rgb(r, g, b) = color {
         Okhsl::from_color(Srgb::new(r as f32 / 255.0, g as f32 / 255.0, b as f32 / 255.0))
@@ -49,6 +57,7 @@ pub fn rgb_to_okhsl (color: Color) -> Okhsl<f32> {
         unreachable!("only Color::Rgb is supported")
     }
 }
+
 // A single color within item theme parameters, in OKHSL and RGB representations.
 impl ItemColor {
     pub const fn from_rgb (rgb: Color) -> Self {
@@ -77,6 +86,7 @@ impl ItemColor {
         self.okhsl.mix(other.okhsl, distance).into()
     }
 }
+
 /// A color in OKHSL and RGB with lighter and darker variants.
 #[derive(Debug, Default, Copy, Clone, PartialEq)] pub struct ItemPalette {
     pub base:     ItemColor,
@@ -87,6 +97,7 @@ impl ItemColor {
     pub darker:   ItemColor,
     pub darkest:  ItemColor,
 }
+
 impl ItemPalette {
     pub const G: [Self;256] = {
         let mut builder = konst::array::ArrayBuilder::new();
@@ -159,5 +170,6 @@ impl ItemPalette {
         }
     }
 }
+
 from!(|base: Color|    ItemPalette = Self::from_tui_color(base));
 from!(|base: ItemColor|ItemPalette = Self::from_item_color(base));
diff --git a/tui/src/tui_file.rs b/tui/src/tui_content/tui_file.rs
similarity index 100%
rename from tui/src/tui_file.rs
rename to tui/src/tui_content/tui_file.rs
diff --git a/tui/src/tui_engine.rs b/tui/src/tui_engine.rs
index e53474a..8caa842 100644
--- a/tui/src/tui_engine.rs
+++ b/tui/src/tui_engine.rs
@@ -1,5 +1,11 @@
 use crate::*;
 use std::time::Duration;
+
+mod tui_buffer;  pub use self::tui_buffer::*;
+mod tui_input;   pub use self::tui_input::*;
+mod tui_output;  pub use self::tui_output::*;
+mod tui_perf;    pub use self::tui_perf::*;
+
 pub struct Tui {
     pub exited:  Arc<AtomicBool>,
     pub backend: CrosstermBackend<Stdout>,
@@ -7,6 +13,31 @@ pub struct Tui {
     pub area:    [u16;4],
     pub perf:    PerfModel,
 }
+
+pub trait TuiRun<R: Render<TuiOut> + Handle<TuiIn> + 'static> {
+    /// Run an app in the main loop.
+    fn run (&self, state: &Arc<RwLock<R>>) -> Usually<()>;
+}
+
+impl<T: Render<TuiOut> + Handle<TuiIn> + 'static> TuiRun<T> for Arc<RwLock<Tui>> {
+    fn run (&self, state: &Arc<RwLock<T>>) -> Usually<()> {
+        let _input_thread = TuiIn::run_input(self, state, Duration::from_millis(100));
+        self.write().unwrap().setup()?;
+        let render_thread = TuiOut::run_output(self, state, Duration::from_millis(10));
+        match render_thread.join() {
+            Ok(result) => {
+                self.write().unwrap().teardown()?;
+                println!("\n\rRan successfully: {result:?}\n\r");
+            },
+            Err(error) => {
+                self.write().unwrap().teardown()?;
+                panic!("\n\rRender thread failed: {error:?}.\n\r")
+            },
+        }
+        Ok(())
+    }
+}
+
 impl Tui {
     /// Construct a new TUI engine and wrap it for shared ownership.
     pub fn new () -> Usually<Arc<RwLock<Self>>> {
@@ -58,25 +89,3 @@ impl Tui {
         disable_raw_mode().map_err(Into::into)
     }
 }
-pub trait TuiRun<R: Render<TuiOut> + Handle<TuiIn> + 'static> {
-    /// Run an app in the main loop.
-    fn run (&self, state: &Arc<RwLock<R>>) -> Usually<()>;
-}
-impl<T: Render<TuiOut> + Handle<TuiIn> + 'static> TuiRun<T> for Arc<RwLock<Tui>> {
-    fn run (&self, state: &Arc<RwLock<T>>) -> Usually<()> {
-        let _input_thread = TuiIn::run_input(self, state, Duration::from_millis(100));
-        self.write().unwrap().setup()?;
-        let render_thread = TuiOut::run_output(self, state, Duration::from_millis(10));
-        match render_thread.join() {
-            Ok(result) => {
-                self.write().unwrap().teardown()?;
-                println!("\n\rRan successfully: {result:?}\n\r");
-            },
-            Err(error) => {
-                self.write().unwrap().teardown()?;
-                panic!("\n\rRender thread failed: {error:?}.\n\r")
-            },
-        }
-        Ok(())
-    }
-}
diff --git a/tui/src/tui_buffer.rs b/tui/src/tui_engine/tui_buffer.rs
similarity index 99%
rename from tui/src/tui_buffer.rs
rename to tui/src/tui_engine/tui_buffer.rs
index d229008..7fc44b9 100644
--- a/tui/src/tui_buffer.rs
+++ b/tui/src/tui_engine/tui_buffer.rs
@@ -1,4 +1,5 @@
 use crate::*;
+
 pub fn buffer_update (buf: &mut Buffer, area: [u16;4], callback: &impl Fn(&mut Cell, u16, u16)) {
     for row in 0..area.h() {
         let y = area.y() + row;
@@ -12,16 +13,19 @@ pub fn buffer_update (buf: &mut Buffer, area: [u16;4], callback: &impl Fn(&mut C
         }
     }
 }
+
 #[derive(Default)] pub struct BigBuffer {
     pub width:   usize,
     pub height:  usize,
     pub content: Vec<Cell>
 }
+
 impl std::fmt::Debug for BigBuffer {
     fn fmt (&self, f: &mut std::fmt::Formatter<'_>) -> std::result::Result<(), std::fmt::Error> {
         write!(f, "[BB {}x{} ({})]", self.width, self.height, self.content.len())
     }
 }
+
 impl BigBuffer {
     pub fn new (width: usize, height: usize) -> Self {
         Self { width, height, content: vec![Cell::default(); width*height] }
@@ -38,4 +42,5 @@ impl BigBuffer {
         y * self.width + x
     }
 }
+
 from!(|size:(usize, usize)| BigBuffer = Self::new(size.0, size.1));
diff --git a/tui/src/tui_input.rs b/tui/src/tui_engine/tui_input.rs
similarity index 99%
rename from tui/src/tui_input.rs
rename to tui/src/tui_engine/tui_input.rs
index c46db32..d09aa86 100644
--- a/tui/src/tui_input.rs
+++ b/tui/src/tui_engine/tui_input.rs
@@ -2,6 +2,7 @@ use crate::*;
 use std::time::Duration;
 use std::thread::{spawn, JoinHandle};
 use crossterm::event::{poll, read};
+
 #[derive(Debug, Clone)] pub struct TuiIn(pub Arc<AtomicBool>, pub Event);
 impl Input for TuiIn {
     type Event = Event;
diff --git a/tui/src/tui_output.rs b/tui/src/tui_engine/tui_output.rs
similarity index 100%
rename from tui/src/tui_output.rs
rename to tui/src/tui_engine/tui_output.rs
diff --git a/tui/src/tui_perf.rs b/tui/src/tui_engine/tui_perf.rs
similarity index 100%
rename from tui/src/tui_perf.rs
rename to tui/src/tui_engine/tui_perf.rs