mirror of
https://github.com/ratatui-org/ratatui
synced 2024-11-10 07:04:17 +00:00
Cache layout and performance fixes
This commit is contained in:
Florian Dehau
parent
07ff2b08eb
commit
d7131ead11
5 changed files with 61 additions and 31 deletions
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@ -82,7 +82,7 @@ struct App {
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progress: u16,
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data: Vec<u64>,
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data2: Vec<(f64, f64)>,
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window: [f64; 2],
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data3: Vec<(f64, f64)>,
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colors: [Color; 2],
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color_index: usize,
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}
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@ -109,6 +109,7 @@ fn main() {
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let mut rand_signal = RandomSignal::new(Range::new(0, 100));
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let mut sin_signal = SinSignal::new(4.0, 20.0);
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let mut sin_signal2 = SinSignal::new(2.0, 10.0);
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let mut app = App {
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name: String::from("Test app"),
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@ -119,7 +120,7 @@ fn main() {
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progress: 0,
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data: rand_signal.clone().take(100).collect(),
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data2: sin_signal.clone().take(100).collect(),
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window: [0.0, 100.0],
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data3: sin_signal2.clone().take(100).collect(),
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colors: [Color::Magenta, Color::Red],
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color_index: 0,
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};
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@ -141,7 +142,7 @@ fn main() {
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let tx = tx.clone();
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loop {
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tx.send(Event::Tick).unwrap();
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thread::sleep(time::Duration::from_millis(500));
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thread::sleep(time::Duration::from_millis(1000));
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}
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});
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@ -184,8 +185,8 @@ fn main() {
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app.data.pop();
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app.data2.remove(0);
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app.data2.push(sin_signal.next().unwrap());
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app.window[0] += 1.0;
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app.window[1] += 1.0;
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app.data3.remove(0);
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app.data3.push(sin_signal2.next().unwrap());
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app.selected += 1;
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if app.selected >= app.items.len() {
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app.selected = 0;
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@ -206,14 +207,14 @@ fn draw(t: &mut Terminal, app: &App) {
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.direction(Direction::Vertical)
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.alignment(Alignment::Left)
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.chunks(&[Size::Fixed(7), Size::Min(5), Size::Fixed(3)])
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.render(&Terminal::size().unwrap(), |chunks| {
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.render(t, &Terminal::size().unwrap(), |t, chunks| {
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Block::default().borders(border::ALL).title("Graphs").render(&chunks[0], t);
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Group::default()
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.direction(Direction::Vertical)
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.alignment(Alignment::Left)
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.margin(1)
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.chunks(&[Size::Fixed(2), Size::Fixed(3)])
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.render(&chunks[0], |chunks| {
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.render(t, &chunks[0], |t, chunks| {
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Gauge::default()
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.block(Block::default().title("Gauge:"))
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.bg(Color::Yellow)
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@ -234,7 +235,7 @@ fn draw(t: &mut Terminal, app: &App) {
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.direction(Direction::Horizontal)
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.alignment(Alignment::Left)
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.chunks(&sizes)
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.render(&chunks[1], |chunks| {
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.render(t, &chunks[1], |t, chunks| {
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List::default()
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.block(Block::default().borders(border::ALL).title("List"))
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.render(&chunks[0], t);
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@ -243,9 +244,10 @@ fn draw(t: &mut Terminal, app: &App) {
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.block(Block::default()
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.borders(border::ALL)
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.title("Chart"))
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.x_axis(Axis::default().title("X").bounds(app.window))
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.x_axis(Axis::default().title("X").bounds([0.0, 100.0]))
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.y_axis(Axis::default().title("Y").bounds([0.0, 40.0]))
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.datasets(&[Dataset::default().color(Color::Cyan).data(&app.data2)])
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.datasets(&[Dataset::default().color(Color::Cyan).data(&app.data2),
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Dataset::default().color(Color::Yellow).data(&app.data3)])
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.render(&chunks[1], t);
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}
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});
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@ -6,7 +6,10 @@ use cassowary::WeightedRelation::*;
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use cassowary::strength::{WEAK, REQUIRED};
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use buffer::Buffer;
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use terminal::Terminal;
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use util::hash;
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#[derive(Hash)]
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pub enum Alignment {
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Top,
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Left,
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@ -15,12 +18,13 @@ pub enum Alignment {
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Right,
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}
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#[derive(Hash)]
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pub enum Direction {
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Horizontal,
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Vertical,
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}
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#[derive(Debug, Clone, Copy)]
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#[derive(Debug, Clone, Copy, Hash, PartialEq, Eq)]
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pub struct Rect {
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pub x: u16,
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pub y: u16,
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@ -235,6 +239,7 @@ impl Element {
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}
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}
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#[derive(Hash)]
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pub struct Group {
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direction: Direction,
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alignment: Alignment,
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@ -273,14 +278,26 @@ impl Group {
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self.chunks = Vec::from(chunks);
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self
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}
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pub fn render<F>(&self, area: &Rect, mut f: F)
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where F: FnMut(&[Rect])
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pub fn render<F>(&self, t: &mut Terminal, area: &Rect, mut f: F)
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where F: FnMut(&mut Terminal, &[Rect])
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{
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let chunks = split(area,
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&self.direction,
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&self.alignment,
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self.margin,
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&self.chunks);
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f(&chunks);
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let hash = hash(self, area);
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let (cache_update, chunks) = match t.get_layout(hash) {
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Some(chs) => (false, chs.to_vec()),
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None => {
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(true,
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split(area,
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&self.direction,
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&self.alignment,
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self.margin,
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&self.chunks))
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}
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};
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f(t, &chunks);
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if cache_update {
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t.set_layout(hash, chunks);
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}
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}
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}
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@ -8,16 +8,19 @@ use termion::raw::{IntoRawMode, RawTerminal};
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use buffer::Buffer;
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use widgets::Widget;
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use layout::Rect;
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use util::hash;
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pub struct Terminal {
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stdout: RawTerminal<io::Stdout>,
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layout_cache: HashMap<u64, Vec<Rect>>,
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}
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impl Terminal {
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pub fn new() -> Result<Terminal, io::Error> {
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let stdout = try!(io::stdout().into_raw_mode());
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Ok(Terminal { stdout: stdout })
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Ok(Terminal {
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stdout: stdout,
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layout_cache: HashMap::new(),
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})
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}
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pub fn size() -> Result<Rect, io::Error> {
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@ -30,20 +33,29 @@ impl Terminal {
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})
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}
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// FIXME: Clean cache to prevent memory leak
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pub fn get_layout(&self, hash: u64) -> Option<&Vec<Rect>> {
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self.layout_cache.get(&hash)
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}
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pub fn set_layout(&mut self, hash: u64, chunks: Vec<Rect>) {
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self.layout_cache.insert(hash, chunks);
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}
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pub fn render_buffer(&mut self, buffer: Buffer) {
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let mut string = String::with_capacity(buffer.area().area() as usize);
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for (i, cell) in buffer.content().iter().enumerate() {
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let (lx, ly) = buffer.pos_of(i).unwrap();
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let (x, y) = (lx + buffer.area().x, ly + buffer.area().y);
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if cell.symbol != "" {
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write!(self.stdout,
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"{}{}{}{}",
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termion::cursor::Goto(x + 1, y + 1),
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cell.fg.fg(),
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cell.bg.bg(),
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cell.symbol)
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.unwrap();
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string.push_str(&format!("{}{}{}{}",
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termion::cursor::Goto(x + 1, y + 1),
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cell.fg.fg(),
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cell.bg.bg(),
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cell.symbol))
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}
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}
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write!(self.stdout, "{}", string);
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self.stdout.flush().unwrap();
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}
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pub fn clear(&mut self) {
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@ -3,9 +3,10 @@ use std::hash::{Hash, Hasher, BuildHasher};
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use layout::Rect;
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pub fn hash<T: Hash>(t: &T) -> u64 {
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pub fn hash<T: Hash>(t: &T, area: &Rect) -> u64 {
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let state = RandomState::new();
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let mut hasher = state.build_hasher();
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t.hash(&mut hasher);
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area.hash(&mut hasher);
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hasher.finish()
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}
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@ -138,7 +138,6 @@ impl<'a> Widget<'a> for Chart<'a> {
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let margin_x = chart_area.x - area.x;
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let margin_y = chart_area.y - area.y;
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// info!("{:?}", self.datasets[0].data[0]);
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for dataset in self.datasets {
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for &(x, y) in dataset.data.iter() {
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@ -150,7 +149,6 @@ impl<'a> Widget<'a> for Chart<'a> {
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(self.y_axis.bounds[1] - self.y_axis.bounds[0]);
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let dx = (self.x_axis.bounds[1] - x) * (chart_area.width - 1) as f64 /
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(self.x_axis.bounds[1] - self.x_axis.bounds[0]);
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info!("{} {}", dx, dy);
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buf.update_cell(dx as u16 + margin_x, dy as u16 + margin_y, |c| {
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c.symbol = symbols::DOT;
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c.fg = dataset.color;
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