tforgione/multiview
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Still needs flickering reduction

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This commit is contained in:
Thomas Forgione 2023-10-21 17:38:08 +02:00
parent 7fb37a8f35
commit 2c98b3b3a6
1 changed files with 106 additions and 50 deletions
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156
src/lib.rs
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@ -145,6 +145,12 @@ pub struct Tile {
/// Coordinates of the tile. /// Coordinates of the tile.
pub coords: (u16, u16), pub coords: (u16, u16),
/// The number of lines that the stdout is scrolled.
pub scroll: isize,
/// The number of lines that stdout will print.
pub max_scroll: isize,
} }
impl Tile { impl Tile {
@ -158,6 +164,8 @@ impl Tile {
stdout: vec![], stdout: vec![],
sender, sender,
coords: (i, j), coords: (i, j),
scroll: 0,
max_scroll: 0,
} }
} }
@ -234,7 +242,7 @@ impl Tile {
} }
sender sender
.send(Msg::Stdout(coords.0, coords.1, String::new())) .send(Msg::Stdout(coords.0, coords.1, String::from("\n")))
.unwrap(); .unwrap();
let code = child.wait().unwrap().code().unwrap(); let code = child.wait().unwrap().code().unwrap();
@ -312,38 +320,35 @@ impl<W: Write> Multiview<W> {
} }
/// Draws a box from (x1, y1) to (x2, y2). /// Draws a box from (x1, y1) to (x2, y2).
pub fn rect(&mut self, (x1, y1): (u16, u16), (x2, y2): (u16, u16)) -> io::Result<()> { pub fn rect(&mut self, (x1, y1): (u16, u16), (x2, y2): (u16, u16)) -> String {
write!(self.stdout, "{}┌", cursor::Goto(x1, y1))?; let mut buffer = vec![];
buffer.push(format!("{}┌", cursor::Goto(x1, y1)));
for _ in (x1 + 1)..x2 { for _ in (x1 + 1)..x2 {
write!(self.stdout, "─")?; buffer.push(format!("─"));
} }
write!(self.stdout, "┐")?; buffer.push(format!("┐"));
for y in (y1 + 1)..y2 { for y in (y1 + 1)..y2 {
write!(self.stdout, "{}│", cursor::Goto(x1, y))?; buffer.push(format!("{}│", cursor::Goto(x1, y)));
write!(self.stdout, "{}│", cursor::Goto(x2, y))?; buffer.push(format!("{}│", cursor::Goto(x2, y)));
} }
write!(self.stdout, "{}└", cursor::Goto(x1, y2))?; buffer.push(format!("{}└", cursor::Goto(x1, y2)));
for _ in (x1 + 1)..x2 { for _ in (x1 + 1)..x2 {
write!(self.stdout, "─")?; buffer.push(format!("─"));
} }
write!(self.stdout, "┘")?; buffer.push(format!("┘"));
Ok(()) buffer.join("")
}
/// Clears stdout.
pub fn clear(&mut self) -> io::Result<()> {
write!(self.stdout, "{}", clear::All)
} }
/// Renders the (x, y) tile. /// Renders the (x, y) tile.
pub fn render_tile(&mut self, (i, j): (u16, u16), term_size: (u16, u16)) -> io::Result<()> { pub fn render_tile(&mut self, (i, j): (u16, u16), term_size: (u16, u16)) -> String {
let w = term_size.0 / self.tiles[0].len() as u16; let w = term_size.0 / self.tiles[0].len() as u16;
let h = term_size.1 / self.tiles.len() as u16; let h = term_size.1 / self.tiles.len() as u16;
@ -356,6 +361,8 @@ impl<W: Write> Multiview<W> {
let tile = &self.tile((i, j)); let tile = &self.tile((i, j));
let command_str = tile.command.join(" "); let command_str = tile.command.join(" ");
let mut buffer = vec![];
// TODO: find a way to avoid this copy // TODO: find a way to avoid this copy
let lines = tile let lines = tile
.stdout .stdout
@ -371,8 +378,12 @@ impl<W: Write> Multiview<W> {
command_str command_str
}; };
write!( let mut counting = true;
self.stdout, let mut line_index = 0;
let mut current_char_index = 0;
let scroll = tile.scroll as u16;
buffer.push(format!(
"{}{} {}Command: {}{}{}", "{}{} {}Command: {}{}{}",
color::Reset.fg_str(), color::Reset.fg_str(),
cursor::Goto(x1 + 1, y1 + 1), cursor::Goto(x1 + 1, y1 + 1),
@ -380,11 +391,7 @@ impl<W: Write> Multiview<W> {
command_str, command_str,
style::Reset, style::Reset,
cursor::Goto(x1 + 2, y1 + 3), cursor::Goto(x1 + 2, y1 + 3),
)?; ));
let mut counting = true;
let mut line_index = 0;
let mut current_char_index = 0;
for line in lines { for line in lines {
for c in line.chars() { for c in line.chars() {
@ -396,20 +403,32 @@ impl<W: Write> Multiview<W> {
'\n' => { '\n' => {
line_index += 1; line_index += 1;
current_char_index = 0; current_char_index = 0;
write!(
self.stdout, if line_index >= scroll && line_index < h + scroll {
"{}", if current_char_index < w {
cursor::Goto(x1 + 2, y1 + 3 + line_index as u16) let mut spaces = String::new();
)?; for _ in 0..w - current_char_index {
spaces.push(' ');
}
buffer.push(spaces);
}
buffer.push(format!(
"{}",
cursor::Goto(x1 + 2, y1 + 3 + line_index as u16 - scroll)
));
}
} }
'\r' => { '\r' => {
current_char_index = 0; current_char_index = 0;
write!(
self.stdout, if line_index >= scroll && line_index < h + scroll {
"{}", buffer.push(format!(
cursor::Goto(x1 + 2, y1 + 3 + line_index as u16) "{}",
)?; cursor::Goto(x1 + 2, y1 + 3 + line_index as u16 - scroll)
));
}
} }
_ => { _ => {
@ -420,13 +439,18 @@ impl<W: Write> Multiview<W> {
if current_char_index == w - 3 { if current_char_index == w - 3 {
line_index += 1; line_index += 1;
current_char_index = 1; current_char_index = 1;
write!(
self.stdout, if line_index >= scroll && line_index < h + scroll {
"{}", buffer.push(format!(
cursor::Goto(x1 + 2, y1 + 3 + line_index as u16) "{}",
)?; cursor::Goto(x1 + 2, y1 + 3 + line_index as u16 - scroll)
));
}
}
if line_index >= scroll && line_index < h + scroll {
buffer.push(format!("{}", c));
} }
write!(self.stdout, "{}", c)?;
} }
} }
@ -436,35 +460,57 @@ impl<W: Write> Multiview<W> {
} }
} }
if self.selected == (i, j) { let tile = self.tile_mut((i, j));
write!(self.stdout, "{}", color::Green.fg_str())?; if tile.max_scroll != line_index as isize {
tile.max_scroll = line_index as isize;
tile.scroll = tile.max_scroll - h as isize + 5;
if tile.scroll < 0 {
tile.scroll = 0;
}
} }
self.rect((x1, y1), (x2, y2))?;
write!(self.stdout, "{}├", cursor::Goto(x1, y1 + 2))?; if self.selected == (i, j) {
buffer.push(format!("{}", color::Green.fg_str()));
}
buffer.push(self.rect((x1, y1), (x2, y2)));
buffer.push(format!("{}├", cursor::Goto(x1, y1 + 2)));
for _ in (x1 + 1)..x2 { for _ in (x1 + 1)..x2 {
write!(self.stdout, "─")?; buffer.push(format!("─"));
} }
write!(self.stdout, "{}┤", cursor::Goto(x2, y1 + 2))?; buffer.push(format!("{}┤", cursor::Goto(x2, y1 + 2)));
Ok(()) buffer.join("")
} }
/// Renders all the tiles of the multiview. /// Renders all the tiles of the multiview.
pub fn render(&mut self, term_size: (u16, u16)) -> io::Result<()> { pub fn render(&mut self, term_size: (u16, u16)) -> io::Result<()> {
self.clear()?; let mut buffer = vec![];
for i in 0..self.tiles.len() { for i in 0..self.tiles.len() {
for j in 0..self.tiles[0].len() { for j in 0..self.tiles[0].len() {
self.render_tile((i as u16, j as u16), term_size)?; buffer.push(self.render_tile((i as u16, j as u16), term_size));
} }
} }
write!(self.stdout, "{}", buffer.join(""))?;
self.stdout.flush()?; self.stdout.flush()?;
Ok(()) Ok(())
} }
/// Scrolls down the current selected tile.
pub fn scroll_down(&mut self) {
self.tile_mut(self.selected).scroll += 1;
}
/// Scrolls up the current selected tile.
pub fn scroll_up(&mut self) {
let tile = self.tile_mut(self.selected);
if tile.scroll > 0 {
tile.scroll -= 1;
}
}
} }
impl<W: Write> Drop for Multiview<W> { impl<W: Write> Drop for Multiview<W> {
@ -484,6 +530,12 @@ pub enum Msg {
/// A click occured. /// A click occured.
Click(u16, u16), Click(u16, u16),
/// Scroll up one line.
ScrollUp,
/// Scroll down one line.
ScrollDown,
/// The program was asked to exit. /// The program was asked to exit.
Exit, Exit,
} }
@ -532,6 +584,8 @@ pub fn main() -> io::Result<()> {
let evt = c.unwrap(); let evt = c.unwrap();
match evt { match evt {
Event::Key(Key::Char('q')) => sender.send(Msg::Exit).unwrap(), Event::Key(Key::Char('q')) => sender.send(Msg::Exit).unwrap(),
Event::Key(Key::Down) => sender.send(Msg::ScrollDown).unwrap(),
Event::Key(Key::Up) => sender.send(Msg::ScrollUp).unwrap(),
Event::Mouse(me) => match me { Event::Mouse(me) => match me {
MouseEvent::Press(_, x, y) => sender.send(Msg::Click(x, y)).unwrap(), MouseEvent::Press(_, x, y) => sender.send(Msg::Click(x, y)).unwrap(),
@ -548,6 +602,8 @@ pub fn main() -> io::Result<()> {
Ok(Msg::Stdout(i, j, line)) => multiview.tile_mut((i, j)).stdout.push(line), Ok(Msg::Stdout(i, j, line)) => multiview.tile_mut((i, j)).stdout.push(line),
Ok(Msg::Stderr(i, j, line)) => multiview.tile_mut((i, j)).stdout.push(line), Ok(Msg::Stderr(i, j, line)) => multiview.tile_mut((i, j)).stdout.push(line),
Ok(Msg::Click(x, y)) => multiview.select_tile((x, y), term_size), Ok(Msg::Click(x, y)) => multiview.select_tile((x, y), term_size),
Ok(Msg::ScrollDown) => multiview.scroll_down(),
Ok(Msg::ScrollUp) => multiview.scroll_up(),
Ok(Msg::Exit) => break, Ok(Msg::Exit) => break,
Err(_) => (), Err(_) => (),
} }