..

Cargo.lock

@@ -133,6 +133,7 @@ dependencies = [
  "crossterm",
  "futures",
  "libc",
+ "plugin",
  "ratatui",
  "shared",
  "signal-hook-tokio",
@@ -217,6 +218,16 @@ dependencies = [
  "generic-array",
 ]
 
+[[package]]
+name = "bstr"
+version = "1.7.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c79ad7fb2dd38f3dabd76b09c6a5a20c038fc0213ef1e9afd30eb777f120f019"
+dependencies = [
+ "memchr",
+ "serde",
+]
+
 [[package]]
 name = "bumpalo"
 version = "3.14.0"
@@ -544,6 +555,15 @@ version = "1.0.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "5443807d6dff69373d433ab9ef5378ad8df50ca6298caf15de6e52e24aaf54d5"
 
+[[package]]
+name = "erased-serde"
+version = "0.3.31"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "6c138974f9d5e7fe373eb04df7cae98833802ae4b11c24ac7039a21d5af4b26c"
+dependencies = [
+ "serde",
+]
+
 [[package]]
 name = "error-code"
 version = "2.3.1"
@@ -1073,6 +1093,33 @@ dependencies = [
  "windows-sys",
 ]
 
+[[package]]
+name = "mlua"
+version = "0.9.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "6c3a7a7ff4481ec91b951a733390211a8ace1caba57266ccb5f4d4966704e560"
+dependencies = [
+ "bstr",
+ "erased-serde",
+ "mlua-sys",
+ "num-traits",
+ "once_cell",
+ "rustc-hash",
+ "serde",
+ "serde-value",
+]
+
+[[package]]
+name = "mlua-sys"
+version = "0.3.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "3ec8b54eddb76093069cce9eeffb4c7b3a1a0fe66962d7bd44c4867928149ca3"
+dependencies = [
+ "cc",
+ "cfg-if",
+ "pkg-config",
+]
+
 [[package]]
 name = "nom"
 version = "7.1.3"
@@ -1203,6 +1250,15 @@ version = "0.2.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "04744f49eae99ab78e0d5c0b603ab218f515ea8cfe5a456d7629ad883a3b6e7d"
 
+[[package]]
+name = "ordered-float"
+version = "2.10.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "68f19d67e5a2795c94e73e0bb1cc1a7edeb2e28efd39e2e1c9b7a40c1108b11c"
+dependencies = [
+ "num-traits",
+]
+
 [[package]]
 name = "overload"
 version = "0.1.1"
@@ -1276,6 +1332,19 @@ dependencies = [
  "time",
 ]
 
+[[package]]
+name = "plugin"
+version = "0.1.0"
+dependencies = [
+ "anyhow",
+ "config",
+ "core",
+ "mlua",
+ "ratatui",
+ "shared",
+ "tracing",
+]
+
 [[package]]
 name = "png"
 version = "0.17.10"
@@ -1450,6 +1519,12 @@ version = "0.1.23"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "d626bb9dae77e28219937af045c257c28bfd3f69333c512553507f5f9798cb76"
 
+[[package]]
+name = "rustc-hash"
+version = "1.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "08d43f7aa6b08d49f382cde6a7982047c3426db949b1424bc4b7ec9ae12c6ce2"
+
 [[package]]
 name = "rustversion"
 version = "1.0.14"
@@ -1492,6 +1567,16 @@ dependencies = [
  "serde_derive",
 ]
 
+[[package]]
+name = "serde-value"
+version = "0.7.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f3a1a3341211875ef120e117ea7fd5228530ae7e7036a779fdc9117be6b3282c"
+dependencies = [
+ "ordered-float",
+ "serde",
+]
+
 [[package]]
 name = "serde_derive"
 version = "1.0.188"
@@ -1542,7 +1627,6 @@ dependencies = [
  "libc",
  "parking_lot",
  "ratatui",
- "regex",
  "tokio",
 ]
 

app/src/parser.rs

@@ -1,15 +1,16 @@
+use anyhow::Result;
 use config::theme::Color;
-use ratatui::{style::{Modifier, Style}, text::{Line, Span}, widgets::Paragraph};
+use ratatui::{prelude::{Buffer, Rect}, style::{Modifier, Style}, text::{Line, Span}, widgets::{Paragraph, Widget}};
 
 pub struct Parser;
 
 impl Parser {
-	pub fn span(s: &str) -> Span<'static> {
+	fn span(s: &str) -> Span<'static> {
 		let Some((args, content)) = s.split_once(';') else {
 			return Span::raw(s.to_string());
 		};
 
-		let args = args.split(',').collect::<Vec<_>>();
+		let args: Vec<_> = args.split(',').collect();
 		if args.len() != 4 {
 			return Span::raw(s.to_string());
 		}
@@ -30,7 +31,7 @@ impl Parser {
 		Span::styled(content.to_string(), style)
 	}
 
-	pub fn line(s: &str) -> Line<'static> {
+	fn line(s: &str) -> Line<'static> {
 		let mut last = '\0';
 		let mut spans: Vec<String> = vec![String::new()];
 
@@ -49,7 +50,7 @@ impl Parser {
 		Line::from(spans.into_iter().map(|s| Self::span(&s)).collect::<Vec<_>>())
 	}
 
-	pub fn paragraph(s: &str) -> Paragraph {
+	fn paragraph(s: &str) -> Paragraph {
 		let mut last = '\0';
 		let mut lines: Vec<String> = vec![String::new()];
 
@@ -68,22 +69,49 @@ impl Parser {
 		Paragraph::new(lines.into_iter().map(|s| Self::line(&s)).collect::<Vec<_>>())
 	}
 
-	pub fn layout(s: &str) -> Paragraph {
+	fn area(args: Vec<&str>) -> Result<Rect> {
+		Ok(Rect {
+			x:      args[0].parse()?,
+			y:      args[1].parse()?,
+			width:  args[2].parse()?,
+			height: args[3].parse()?,
+		})
+	}
+
+	pub fn render(s: &str, buf: &mut Buffer) {
+		let Some(s) = s.strip_prefix('R') else {
+			return;
+		};
+
 		let mut last = '\0';
-		let mut lines: Vec<String> = vec![String::new()];
+		let mut paragraphs: Vec<String> = vec![String::new()];
 
 		for c in s.chars() {
 			if c == '\0' && last == '\\' {
-				let last = lines.last_mut().unwrap();
+				let last = paragraphs.last_mut().unwrap();
 				last.pop();
 				last.push(c);
 			} else if c == '\0' {
-				lines.push(String::new());
+				paragraphs.push(String::new());
 			} else {
-				lines.last_mut().unwrap().push(c);
+				paragraphs.last_mut().unwrap().push(c);
 			}
 			last = c;
 		}
-		Paragraph::new(lines.into_iter().map(|s| Self::line(&s)).collect::<Vec<_>>())
+
+		for paragraph in paragraphs {
+			let Some((args, content)) = paragraph.split_once(';') else {
+				continue;
+			};
+
+			let args: Vec<_> = args.split(',').collect();
+			if args.len() != 4 {
+				continue;
+			}
+
+			if let Ok(area) = Self::area(args) {
+				Self::paragraph(content).render(area, buf);
+			}
+		}
 	}
 }

app/src/status/layout.rs

@@ -1,9 +1,9 @@
 use core::Ctx;
 
-use ratatui::{buffer::Buffer, layout::{self, Constraint, Direction, Rect}, text::Line, widgets::{Paragraph, Widget}};
+use ratatui::{buffer::Buffer, layout::{self, Constraint, Direction, Rect}, widgets::Widget};
 use tracing::info;
 
-use crate::Parser;
+use crate::parser::Parser;
 
 pub(crate) struct Layout<'a> {
 	cx: &'a Ctx,
@@ -20,63 +20,14 @@ impl<'a> Widget for Layout<'a> {
 			.constraints([Constraint::Percentage(50), Constraint::Percentage(50)].as_ref())
 			.split(area);
 
-		// Left::new(self.cx).render(chunks[0], buf);
-		// Right::new(self.cx).render(chunks[1], buf);
-
-		let mut spans = vec![];
-		if let Ok(mode) = plugin::Status::mode(self.cx) {
-			spans.extend(Parser::line(&mode).spans);
-		}
-
-		let x = plugin::Status::size(self.cx);
+		let x = plugin::Status::layout(self.cx, area);
 		if x.is_err() {
-			info!("Error: {:?}", x);
+			info!("{:?}", x);
 			return;
 		}
-		if let Ok(size) = x {
-			spans.extend(Parser::line(&size).spans);
-		}
 
-		let x = plugin::Status::name(self.cx);
-		if x.is_err() {
-			info!("Error: {:?}", x);
-			return;
-		}
-		if let Ok(name) = x {
-			spans.extend(Parser::line(&name).spans);
-		}
-
-		Paragraph::new(Line::from(spans)).render(chunks[0], buf);
-
-		// Right
-		let mut spans = vec![];
-
-		let x = plugin::Status::permissions(self.cx);
-		if x.is_err() {
-			info!("Error: {:?}", x);
-			return;
-		}
-		if let Ok(name) = x {
-			spans.extend(Parser::line(&name).spans);
-		}
-
-		let x = plugin::Status::percentage(self.cx);
-		if x.is_err() {
-			info!("Error: {:?}", x);
-			return;
-		}
-		if let Ok(name) = x {
-			spans.extend(Parser::line(&name).spans);
-		}
-
-		let x = plugin::Status::position(self.cx);
-		if x.is_err() {
-			info!("Error: {:?}", x);
-			return;
-		}
-		if let Ok(name) = x {
-			spans.extend(Parser::line(&name).spans);
-		}
-		Paragraph::new(Line::from(spans)).render(chunks[1], buf);
+		if let Ok(s) = x {
+			Parser::render(&s, buf);
+		}
 	}
 }

cspell.json

@@ -1 +1 @@
-{"flagWords":[],"words":["Punct","KEYMAP","splitn","crossterm","YAZI","unar","peekable","ratatui","syntect","pbpaste","pbcopy","ffmpegthumbnailer","oneshot","Posix","Lsar","XADDOS","zoxide","cands","Deque","precache","imageops","IFBLK","IFCHR","IFDIR","IFIFO","IFLNK","IFMT","IFSOCK","IRGRP","IROTH","IRUSR","ISGID","ISUID","ISVTX","IWGRP","IWOTH","IWUSR","IXGRP","IXOTH","IXUSR","libc","winsize","TIOCGWINSZ","xpixel","ypixel","ioerr","appender","Catppuccin","macchiato","gitmodules","Dotfiles","bashprofile","vimrc","flac","webp","exiftool","mediainfo","ripgrep","nvim","indexmap","indexmap","unwatch","canonicalize","serde","fsevent","Ueberzug","iterm","wezterm","sixel","chafa","ueberzugpp","️ Überzug","️ Überzug","Konsole","Alacritty","Überzug","pkgs","paru","unarchiver","pdftoppm","poppler","prebuild","singlefile","jpegopt","EXIF","rustfmt","mktemp","nanos","xclip","xsel","Mintty","nixos","nixpkgs","SIGTSTP","SIGCONT","SIGCONT","backstack","natsort","natsort","USERPROFILE"],"language":"en","version":"0.2"}
+{"flagWords":[],"words":["Punct","KEYMAP","splitn","crossterm","YAZI","unar","peekable","ratatui","syntect","pbpaste","pbcopy","ffmpegthumbnailer","oneshot","Posix","Lsar","XADDOS","zoxide","cands","Deque","precache","imageops","IFBLK","IFCHR","IFDIR","IFIFO","IFLNK","IFMT","IFSOCK","IRGRP","IROTH","IRUSR","ISGID","ISUID","ISVTX","IWGRP","IWOTH","IWUSR","IXGRP","IXOTH","IXUSR","libc","winsize","TIOCGWINSZ","xpixel","ypixel","ioerr","appender","Catppuccin","macchiato","gitmodules","Dotfiles","bashprofile","vimrc","flac","webp","exiftool","mediainfo","ripgrep","nvim","indexmap","indexmap","unwatch","canonicalize","serde","fsevent","Ueberzug","iterm","wezterm","sixel","chafa","ueberzugpp","️ Überzug","️ Überzug","Konsole","Alacritty","Überzug","pkgs","paru","unarchiver","pdftoppm","poppler","prebuild","singlefile","jpegopt","EXIF","rustfmt","mktemp","nanos","xclip","xsel","natord","Mintty","nixos","nixpkgs","SIGTSTP","SIGCONT","SIGCONT","mlua","nonstatic","userdata"],"language":"en","version":"0.2"}

plugin/Cargo.toml

@@ -12,3 +12,4 @@ shared = { path = "../shared" }
 anyhow  = "^1"
 mlua    = { version = "^0", features = [ "lua54", "serialize" ] }
 tracing = "^0"
+ratatui = "^0"

plugin/preset/components/status.lua

@@ -1,4 +1,15 @@
-function layout() end
+function layout(area)
+	local chunks = yazi
+		.Layout()
+		:direction(false)
+		:constraints({ yazi.Constraint.Percentage(50), yazi.Constraint.Percentage(50) })
+		:split(area)
+
+	return yazi.Paragraph.render(
+		yazi.Paragraph(mode(), size(), name()):area(chunks[1]),
+		yazi.Paragraph(permissions(), percentage(), position()):area(chunks[2])
+	)
+end
 
 function mode()
 	local mode = cx.manager.mode:upper()
@@ -6,45 +17,41 @@ function mode()
 		mode = "UN-SET"
 	end
 
-	return yazi
-		.Line(
+	return yazi.Line(
 		yazi.Span(THEME.status.separator.opening):fg(THEME.status.mode_normal.bg),
 		yazi.Span(" " .. mode .. " "):style(THEME.status.mode_normal)
 	)
-		:to_string()
 end
 
 function size()
 	local hovered = cx.manager.current_hovered
 	if hovered == nil then
-		return ""
+		return yazi.Span("")
 	end
 
-	return yazi
-		.Line(
+	return yazi.Line(
 		yazi.Span(" " .. hovered.length .. " "):fg(THEME.status.mode_normal.bg):bg(THEME.status.fancy.bg),
 		yazi.Span(THEME.status.separator.closing):fg(THEME.status.fancy.bg)
 	)
-		:to_string()
 end
 
 function name()
 	local hovered = cx.manager.current_hovered
 	if hovered == nil then
-		return ""
+		return yazi.Span("")
 	end
 
-	return yazi.Span(" " .. utils.basename(hovered.url)):to_string()
+	return yazi.Span(" " .. utils.basename(hovered.url))
 end
 
 function permissions()
 	local hovered = cx.manager.current_hovered
 	if hovered == nil then
-		return ""
+		return yazi.Span("")
 	end
 
 	if hovered.permissions == nil then
-		return ""
+		return yazi.Span("")
 	end
 
 	local spans = {}
@@ -60,7 +67,7 @@ function permissions()
 		end
 		spans[i] = yazi.Span(c):style(style)
 	end
-	return yazi.Line:from(spans):to_string()
+	return yazi.Line:from(spans)
 end
 
 function percentage()
@@ -77,16 +84,14 @@ function percentage()
 		percent = string.format(" %3d%% ", percent)
 	end
 
-	return yazi
-		.Line(
+	return yazi.Line(
 		yazi.Span(THEME.status.separator.opening):fg(THEME.status.fancy.bg),
 		yazi.Span(percent):fg(THEME.status.mode_normal.bg):bg(THEME.status.fancy.bg)
 	)
-		:to_string()
 end
 
 function position()
 	local cursor = cx.manager.current_cursor
 	local length = cx.manager.current_length
-	return string.format(" %d/%d ", cursor + 1, length)
+	return yazi.Span(string.format(" %d/%d ", cursor + 1, length))
 end

plugin/preset/elements/paragraph.lua

@@ -2,6 +2,7 @@ local Paragraph = {}
 
 function Paragraph:new(...)
 	local o = {
+		position = nil,
 		lines = { ... },
 	}
 	setmetatable(o, self)
@@ -11,6 +12,11 @@ end
 
 function Paragraph:from(lines) return self:new(table.unpack(lines)) end
 
+function Paragraph:area(rect)
+	self.position = rect
+	return self
+end
+
 function Paragraph:to_string()
 	local s = ""
 	for _, line in ipairs(self.lines) do
@@ -19,6 +25,26 @@ function Paragraph:to_string()
 	return s.sub(s, 1, -2)
 end
 
+function Paragraph:aaa() return self:to_string() end
+
+function Paragraph.render(...)
+	local s = "R"
+	for _, paragraph in ipairs { ... } do
+		s = s
+			.. paragraph.position.x
+			.. ","
+			.. paragraph.position.y
+			.. ","
+			.. paragraph.position.width
+			.. ","
+			.. paragraph.position.height
+			.. ";"
+			.. paragraph:to_string():gsub("\0", "\\\0")
+			.. "\0"
+	end
+	return s.sub(s, 1, -2)
+end
+
 setmetatable(Paragraph, {
 	__call = function(self, ...) return self:new(...) end,
 	__tostring = function(self) return self:to_string() end,

plugin/src/bindings.rs

@@ -10,12 +10,12 @@ impl<'a> Manager<'a> {
 
 impl<'a> UserData for Manager<'a> {
 	fn add_fields<'lua, F: mlua::UserDataFields<'lua, Self>>(fields: &mut F) {
-		fields.add_field_method_get("mode", |_, this| Ok(this.0.active().mode().to_string()));
+		fields.add_field_method_get("mode", |_, me| Ok(me.0.active().mode().to_string()));
 
-		fields.add_field_method_get("current_cursor", |_, this| Ok(this.0.current().cursor()));
-		fields.add_field_method_get("current_length", |_, this| Ok(this.0.current().files.len()));
-		fields.add_field_method_get("current_hovered", |_, this| {
-			Ok(this.0.current().hovered.as_ref().map(File::from))
+		fields.add_field_method_get("current_cursor", |_, me| Ok(me.0.current().cursor()));
+		fields.add_field_method_get("current_length", |_, me| Ok(me.0.current().files.len()));
+		fields.add_field_method_get("current_hovered", |_, me| {
+			Ok(me.0.current().hovered.as_ref().map(File::from))
 		});
 	}
 }
@@ -30,7 +30,7 @@ impl<'a> Tasks<'a> {
 
 impl<'a> UserData for Tasks<'a> {
 	fn add_fields<'lua, F: mlua::UserDataFields<'lua, Self>>(fields: &mut F) {
-		fields.add_field_method_get("progress", |lua, this| lua.to_value(&this.0.progress))
+		fields.add_field_method_get("progress", |lua, me| lua.to_value(&me.0.progress))
 	}
 }
 
@@ -44,17 +44,17 @@ impl From<&core::files::File> for File {
 
 impl UserData for File {
 	fn add_fields<'lua, F: mlua::UserDataFields<'lua, Self>>(fields: &mut F) {
-		fields.add_field_method_get("url", |_, this| Ok(this.0.url().to_string_lossy().to_string()));
-		fields.add_field_method_get("length", |_, this| Ok(this.0.length()));
-		fields.add_field_method_get("link_to", |_, this| {
-			Ok(this.0.link_to().map(|l| l.to_string_lossy().to_string()))
+		fields.add_field_method_get("url", |_, me| Ok(me.0.url().to_string_lossy().to_string()));
+		fields.add_field_method_get("length", |_, me| Ok(me.0.length()));
+		fields.add_field_method_get("link_to", |_, me| {
+			Ok(me.0.link_to().map(|l| l.to_string_lossy().to_string()))
 		});
-		fields.add_field_method_get("is_link", |_, this| Ok(this.0.is_link()));
-		fields.add_field_method_get("is_hidden", |_, this| Ok(this.0.is_hidden()));
+		fields.add_field_method_get("is_link", |_, me| Ok(me.0.is_link()));
+		fields.add_field_method_get("is_hidden", |_, me| Ok(me.0.is_hidden()));
 
 		// Meta
-		fields.add_field_method_get("permissions", |_, this| {
-			Ok(shared::permissions(this.0.meta().permissions()))
+		fields.add_field_method_get("permissions", |_, me| {
+			Ok(shared::permissions(me.0.meta().permissions()))
 		});
 	}
 }

plugin/src/layout.rs

@@ -0,0 +1,178 @@
+use mlua::{AnyUserData, FromLua, Lua, Table, UserData, UserDataMethods, Value};
+use ratatui::layout;
+
+use crate::LUA;
+
+// --- Rect
+#[derive(Clone, Copy)]
+pub struct Rect(layout::Rect);
+
+impl From<layout::Rect> for Rect {
+	fn from(value: layout::Rect) -> Self { Self(value) }
+}
+
+impl<'lua> FromLua<'lua> for Rect {
+	fn from_lua(value: Value<'lua>, _: &'lua Lua) -> mlua::Result<Self> {
+		match value {
+			Value::UserData(ud) => Ok(*ud.borrow::<Self>()?),
+			_ => Err(mlua::Error::FromLuaConversionError {
+				from:    value.type_name(),
+				to:      "Rect",
+				message: Some("expected a Rect".to_string()),
+			}),
+		}
+	}
+}
+
+impl UserData for Rect {
+	fn add_fields<'lua, F: mlua::UserDataFields<'lua, Self>>(fields: &mut F) {
+		fields.add_field_method_get("x", |_, me| Ok(me.0.x));
+		fields.add_field_method_get("y", |_, me| Ok(me.0.y));
+		fields.add_field_method_get("width", |_, me| Ok(me.0.width));
+		fields.add_field_method_get("height", |_, me| Ok(me.0.height));
+	}
+}
+
+// --- Constraint
+#[derive(Clone, Copy)]
+pub struct Constraint(layout::Constraint);
+
+impl Constraint {
+	pub(super) fn install() -> mlua::Result<()> {
+		let globals = LUA.globals();
+		let yazi = globals.get::<_, Table>("yazi")?;
+
+		let constraint = LUA.create_table()?;
+		constraint.set(
+			"Percentage",
+			LUA.create_function(|_, n: u16| Ok(Constraint(layout::Constraint::Percentage(n))))?,
+		)?;
+		constraint.set(
+			"Ratio",
+			LUA
+				.create_function(|_, (a, b): (u32, u32)| Ok(Constraint(layout::Constraint::Ratio(a, b))))?,
+		)?;
+		constraint.set(
+			"Length",
+			LUA.create_function(|_, n: u16| Ok(Constraint(layout::Constraint::Length(n))))?,
+		)?;
+		constraint
+			.set("Max", LUA.create_function(|_, n: u16| Ok(Constraint(layout::Constraint::Max(n))))?)?;
+		constraint
+			.set("Min", LUA.create_function(|_, n: u16| Ok(Constraint(layout::Constraint::Min(n))))?)?;
+
+		yazi.set("Constraint", constraint)
+	}
+}
+
+impl<'lua> FromLua<'lua> for Constraint {
+	fn from_lua(value: Value<'lua>, _: &'lua Lua) -> mlua::Result<Self> {
+		match value {
+			Value::UserData(ud) => Ok(*ud.borrow::<Self>()?),
+			_ => Err(mlua::Error::FromLuaConversionError {
+				from:    value.type_name(),
+				to:      "Constraint",
+				message: Some("expected a Constraint".to_string()),
+			}),
+		}
+	}
+}
+
+impl UserData for Constraint {}
+
+// --- Layout
+#[derive(Clone, Default)]
+pub struct Layout {
+	direction:   bool,
+	margin:      Option<layout::Margin>,
+	constraints: Vec<layout::Constraint>,
+}
+
+impl Layout {
+	pub(super) fn install() -> mlua::Result<()> {
+		let globals = LUA.globals();
+
+		let yazi = globals.get::<_, Table>("yazi")?;
+		yazi.set("Layout", LUA.create_function(|_, ()| Ok(Self::default()))?)
+	}
+}
+
+impl<'lua> FromLua<'lua> for Layout {
+	fn from_lua(value: Value<'lua>, _: &'lua Lua) -> mlua::Result<Self> {
+		match value {
+			Value::UserData(ud) => Ok(ud.borrow::<Self>()?.clone()),
+			_ => Err(mlua::Error::FromLuaConversionError {
+				from:    value.type_name(),
+				to:      "Layout",
+				message: Some("expected a Layout".to_string()),
+			}),
+		}
+	}
+}
+
+impl UserData for Layout {
+	fn add_methods<'lua, M: UserDataMethods<'lua, Self>>(methods: &mut M) {
+		methods.add_function("direction", |_, (ud, value): (AnyUserData, bool)| {
+			{
+				let mut me = ud.borrow_mut::<Self>()?;
+				me.direction = value;
+			}
+			Ok(ud)
+		});
+		methods.add_function("margin", |_, (ud, value): (AnyUserData, u16)| {
+			{
+				let mut me = ud.borrow_mut::<Self>()?;
+				me.margin = Some(layout::Margin::new(value, value));
+			}
+			Ok(ud)
+		});
+		methods.add_function("margin_h", |_, (ud, value): (AnyUserData, u16)| {
+			{
+				let mut me = ud.borrow_mut::<Self>()?;
+				if let Some(margin) = &mut me.margin {
+					margin.horizontal = value;
+				} else {
+					me.margin = Some(layout::Margin::new(value, 0));
+				}
+			}
+			Ok(ud)
+		});
+		methods.add_function("margin_v", |_, (ud, value): (AnyUserData, u16)| {
+			{
+				let mut me = ud.borrow_mut::<Self>()?;
+				if let Some(margin) = &mut me.margin {
+					margin.vertical = value;
+				} else {
+					me.margin = Some(layout::Margin::new(0, value));
+				}
+			}
+			Ok(ud)
+		});
+		methods.add_function("constraints", |_, (ud, value): (AnyUserData, Vec<Constraint>)| {
+			{
+				let mut me = ud.borrow_mut::<Self>()?;
+				me.constraints = value.into_iter().map(|c| c.0).collect();
+			}
+			Ok(ud)
+		});
+		methods.add_function("split", |_, (ud, value): (AnyUserData, Rect)| {
+			let me = ud.borrow::<Self>()?;
+
+			let mut layout = layout::Layout::new()
+				.direction(if me.direction {
+					layout::Direction::Horizontal
+				} else {
+					layout::Direction::Vertical
+				})
+				.constraints(me.constraints.as_slice());
+
+			if let Some(margin) = me.margin {
+				layout = layout.horizontal_margin(margin.horizontal);
+				layout = layout.vertical_margin(margin.vertical);
+			}
+
+			let chunks: Vec<Rect> = layout.split(value.0).iter().copied().map(Rect).collect();
+			Ok(chunks)
+		});
+	}
+}

plugin/src/lib.rs

@@ -1,9 +1,11 @@
 #![allow(clippy::unit_arg)]
 
 mod bindings;
+mod layout;
 mod plugin;
 mod status;
 
 pub use bindings::*;
+pub use layout::*;
 pub use plugin::*;
 pub use status::*;

plugin/src/plugin.rs

@@ -3,21 +3,34 @@ use config::THEME;
 use mlua::{Lua, LuaSerdeExt};
 use shared::RoCell;
 
+use crate::layout;
+
 pub(crate) static LUA: RoCell<Lua> = RoCell::new();
 
 pub fn init() {
 	fn inner() -> Result<()> {
 		let lua = Lua::new();
+
+		// Base
 		lua.load(include_str!("../preset/utils.lua")).exec()?;
 		lua.load(include_str!("../preset/inspect/inspect.lua")).exec()?;
-		lua.load(include_str!("../preset/span.lua")).exec()?;
-		lua.load(include_str!("../preset/line.lua")).exec()?;
-		lua.load(include_str!("../preset/paragraph.lua")).exec()?;
 
-		lua.load(include_str!("../preset/status.lua")).exec()?;
+		// Elements
+		lua.load(include_str!("../preset/elements/span.lua")).exec()?;
+		lua.load(include_str!("../preset/elements/line.lua")).exec()?;
+		lua.load(include_str!("../preset/elements/paragraph.lua")).exec()?;
 
+		// Components
+		lua.load(include_str!("../preset/components/status.lua")).exec()?;
+
+		// Initialize
 		lua.globals().set("THEME", lua.to_value(&*THEME)?)?;
-		Ok(LUA.init(lua))
+		LUA.init(lua);
+
+		layout::Layout::install()?;
+		layout::Constraint::install()?;
+
+		Ok(())
 	}
 
 	inner().expect("failed to initialize Lua");

plugin/src/status.rs

@@ -1,13 +1,14 @@
 use core::Ctx;
 
 use mlua::{Function, Result};
+use ratatui::layout;
 
-use crate::{bindings, LUA};
+use crate::{bindings, Rect, LUA};
 
 pub struct Status;
 
 impl Status {
-	fn scoped<T, F: FnOnce() -> Result<T>>(cx: &Ctx, f: F) -> Result<T> {
+	fn scope<T, F: FnOnce() -> Result<T>>(cx: &Ctx, f: F) -> Result<T> {
 		LUA.scope(|scope| {
 			let manager = scope.create_nonstatic_userdata(bindings::Manager::new(&cx.manager))?;
 			let tasks = scope.create_nonstatic_userdata(bindings::Tasks::new(&cx.tasks))?;
@@ -21,45 +22,10 @@ impl Status {
 		})
 	}
 
-	pub fn mode(cx: &Ctx) -> Result<String> {
-		Self::scoped(cx, || {
-			let mode: Function = LUA.globals().get("mode")?;
-			mode.call::<_, String>(())
-		})
-	}
-
-	pub fn size(cx: &Ctx) -> Result<String> {
-		Self::scoped(cx, || {
-			let size: Function = LUA.globals().get("size")?;
-			size.call::<_, String>(())
-		})
-	}
-
-	pub fn name(cx: &Ctx) -> Result<String> {
-		Self::scoped(cx, || {
-			let size: Function = LUA.globals().get("name")?;
-			size.call::<_, String>(())
-		})
-	}
-
-	pub fn permissions(cx: &Ctx) -> Result<String> {
-		Self::scoped(cx, || {
-			let size: Function = LUA.globals().get("permissions")?;
-			size.call::<_, String>(())
-		})
-	}
-
-	pub fn percentage(cx: &Ctx) -> Result<String> {
-		Self::scoped(cx, || {
-			let size: Function = LUA.globals().get("percentage")?;
-			size.call::<_, String>(())
-		})
-	}
-
-	pub fn position(cx: &Ctx) -> Result<String> {
-		Self::scoped(cx, || {
-			let size: Function = LUA.globals().get("position")?;
-			size.call::<_, String>(())
+	pub fn layout(cx: &Ctx, area: layout::Rect) -> Result<String> {
+		Self::scope(cx, || {
+			let layout: Function = LUA.globals().get("layout")?;
+			layout.call::<_, String>(Rect::from(area))
 		})
 	}
 }

shared/Cargo.toml

@@ -9,6 +9,5 @@ crossterm   = "^0"
 futures     = "^0"
 libc        = "^0"
 parking_lot = "^0"
-ratatui    	= { version = "^0" }
-regex       = "^1"
+ratatui    	= "^0"
 tokio       = { version = "^1", features = [ "parking_lot", "macros", "rt-multi-thread", "sync", "time", "fs" ] }