yazi/yazi-plugin/src/elements/bar.rs
2024-09-21 01:47:34 +08:00

102 lines
2.7 KiB
Rust

use mlua::{AnyUserData, Lua, Table, UserData};
use ratatui::widgets::Borders;
use super::{RectRef, Renderable};
#[derive(Clone)]
pub struct Bar {
area: ratatui::layout::Rect,
direction: ratatui::widgets::Borders,
symbol: String,
style: ratatui::style::Style,
}
impl Bar {
pub fn install(lua: &Lua, ui: &Table) -> mlua::Result<()> {
let new = lua.create_function(|_, (_, area, direction): (Table, RectRef, u8)| {
Ok(Self {
area: *area,
direction: Borders::from_bits_truncate(direction),
symbol: Default::default(),
style: Default::default(),
})
})?;
let bar = lua.create_table_from([
// Direction
("NONE", Borders::NONE.bits()),
("TOP", Borders::TOP.bits()),
("RIGHT", Borders::RIGHT.bits()),
("BOTTOM", Borders::BOTTOM.bits()),
("LEFT", Borders::LEFT.bits()),
("ALL", Borders::ALL.bits()),
])?;
bar.set_metatable(Some(lua.create_table_from([("__call", new)])?));
ui.raw_set("Bar", bar)
}
}
impl UserData for Bar {
fn add_methods<'lua, M: mlua::UserDataMethods<'lua, Self>>(methods: &mut M) {
crate::impl_area_method!(methods);
crate::impl_style_method!(methods, style);
methods.add_function("direction", |_, (ud, symbol): (AnyUserData, u8)| {
ud.borrow_mut::<Self>()?.direction = Borders::from_bits_truncate(symbol);
Ok(ud)
});
methods.add_function("symbol", |_, (ud, symbol): (AnyUserData, String)| {
ud.borrow_mut::<Self>()?.symbol = symbol;
Ok(ud)
});
}
}
impl Renderable for Bar {
fn area(&self) -> ratatui::layout::Rect { self.area }
fn render(self: Box<Self>, buf: &mut ratatui::buffer::Buffer) {
if self.area.area() == 0 {
return;
}
let symbol = if !self.symbol.is_empty() {
&self.symbol
} else if self.direction.intersects(Borders::TOP | Borders::BOTTOM) {
""
} else if self.direction.intersects(Borders::LEFT | Borders::RIGHT) {
""
} else {
" "
};
if self.direction.contains(Borders::LEFT) {
for y in self.area.top()..self.area.bottom() {
buf[(self.area.left(), y)].set_style(self.style).set_symbol(symbol);
}
}
if self.direction.contains(Borders::TOP) {
for x in self.area.left()..self.area.right() {
buf[(x, self.area.top())].set_style(self.style).set_symbol(symbol);
}
}
if self.direction.contains(Borders::RIGHT) {
let x = self.area.right() - 1;
for y in self.area.top()..self.area.bottom() {
buf[(x, y)].set_style(self.style).set_symbol(symbol);
}
}
if self.direction.contains(Borders::BOTTOM) {
let y = self.area.bottom() - 1;
for x in self.area.left()..self.area.right() {
buf[(x, y)].set_style(self.style).set_symbol(symbol);
}
}
}
fn clone_render(&self, buf: &mut ratatui::buffer::Buffer) { Box::new(self.clone()).render(buf) }
}