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https://github.com/zellij-org/zellij.git
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even more performance improvements
This commit is contained in:
parent
4d871294d9
commit
0d57a74247
105
src/main.rs
105
src/main.rs
@ -184,14 +184,13 @@ impl Display for TerminalCharacter {
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}
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struct TerminalOutput {
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pub characters: Vec<char>, // we use a vec rather than a string here because one char can take up multiple characters in a string
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pub characters: Vec<TerminalCharacter>,
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pub display_rows: u16,
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pub display_cols: u16,
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pub should_render: bool,
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cursor_position: usize,
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newline_indices: Vec<usize>, // canonical line breaks we get from the vt interpreter
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linebreak_indices: Vec<usize>, // linebreaks from line wrapping
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unhandled_ansi_codes: HashMap<usize, String>,
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pending_ansi_code: Option<String>, // this is used eg. in a carriage return, where we need to preserve the style
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}
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@ -205,7 +204,6 @@ impl TerminalOutput {
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display_rows: 0,
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display_cols: 0,
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should_render: false,
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unhandled_ansi_codes: HashMap::new(),
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pending_ansi_code: None,
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}
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}
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@ -253,12 +251,8 @@ impl TerminalOutput {
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let linebreak_indices: HashSet<&usize> = HashSet::from_iter(self.linebreak_indices.iter());
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loop {
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i -= 1;
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let character = self.characters.get(i).unwrap();
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let mut terminal_character = TerminalCharacter::new(*character);
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if let Some(code) = self.unhandled_ansi_codes.get(&i) {
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terminal_character.ansi_code = Some(code.clone());
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}
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current_line.push_front(terminal_character);
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let terminal_character = self.characters.get(i).unwrap();
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current_line.push_front(terminal_character.clone());
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if newline_indices.contains(&i) || linebreak_indices.contains(&i) {
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// pad line
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for _ in current_line.len()..self.display_cols as usize {
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@ -365,6 +359,7 @@ impl TerminalOutput {
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self.newline_indices.push(self.characters.len()); // -1?
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self.cursor_position = self.characters.len(); // -1?
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self.should_render = true;
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self.pending_ansi_code = None;
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}
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fn move_to_beginning_of_line (&mut self) {
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let last_newline_index = if self.newline_indices.is_empty() {
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@ -384,19 +379,20 @@ impl vte::Perform for TerminalOutput {
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if DEBUGGING {
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println!("\r[print] {:?}", c);
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} else {
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let mut terminal_character = TerminalCharacter::new(c);
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terminal_character.ansi_code = self.pending_ansi_code.clone();
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if self.characters.len() == self.cursor_position {
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self.characters.push(c);
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self.characters.push(terminal_character);
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} else if self.characters.len() > self.cursor_position {
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self.characters.splice(self.cursor_position..=self.cursor_position, [c].iter().copied()); // TODO: better
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self.characters.remove(self.cursor_position);
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self.characters.insert(self.cursor_position, terminal_character);
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} else {
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let mut space_character = TerminalCharacter::new(' ');
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space_character.ansi_code = self.pending_ansi_code.clone();
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for _ in self.characters.len()..self.cursor_position {
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self.characters.push(' ');
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self.characters.push(space_character.clone());
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};
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self.characters.push(c);
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}
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if let Some(ansi_code) = &self.pending_ansi_code {
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self.unhandled_ansi_codes.insert(self.cursor_position, ansi_code.clone());
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self.pending_ansi_code = None;
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self.characters.push(terminal_character);
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}
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let start_of_last_line = self.index_of_beginning_of_line(self.cursor_position);
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@ -424,8 +420,7 @@ impl vte::Perform for TerminalOutput {
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self.move_to_beginning_of_line();
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} else if byte == 08 { // backspace
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self.cursor_position -= 1;
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self.unhandled_ansi_codes.remove(&self.cursor_position);
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// TODO: also remove character
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self.characters.remove(self.cursor_position);
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} else if byte == 10 { // 0a, newline
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self.add_newline();
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}
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@ -471,20 +466,15 @@ impl vte::Perform for TerminalOutput {
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if params.len() == 1 && params[0] == 0 {
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// eg. \u{1b}[m
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self.pending_ansi_code = Some(String::from("\u{1b}[m"));
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self.unhandled_ansi_codes.insert(self.cursor_position, String::from("\u{1b}[m"));
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} else {
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// eg. \u{1b}[38;5;0m
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let param_string = params.iter().map(|p| p.to_string()).collect::<Vec<String>>().join(";");
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self.pending_ansi_code = Some(format!("\u{1b}[{}m", param_string));
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self.unhandled_ansi_codes.insert(self.cursor_position, format!("\u{1b}[{}m", param_string));
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}
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} else if c == 'C' { // move cursor
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self.cursor_position += params[0] as usize; // TODO: negative value?
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} else if c == 'K' { // clear line (0 => right, 1 => left, 2 => all)
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if params[0] == 0 {
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for i in self.cursor_position + 1..self.characters.len() {
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self.unhandled_ansi_codes.remove(&i);
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}
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if let Some(position_of_first_newline_index_to_delete) = self.newline_indices.iter().position(|&ni| ni > self.cursor_position) {
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self.newline_indices.truncate(position_of_first_newline_index_to_delete);
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}
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@ -496,9 +486,6 @@ impl vte::Perform for TerminalOutput {
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// TODO: implement 1 and 2
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} else if c == 'J' { // clear all (0 => below, 1 => above, 2 => all, 3 => saved)
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if params[0] == 0 {
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for i in self.cursor_position + 1..self.characters.len() {
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self.unhandled_ansi_codes.remove(&i);
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}
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if let Some(position_of_first_newline_index_to_delete) = self.newline_indices.iter().position(|&ni| ni > self.cursor_position) {
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self.newline_indices.truncate(position_of_first_newline_index_to_delete);
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}
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@ -557,32 +544,6 @@ fn split_horizontally_with_gap (rect: &Winsize) -> (Winsize, Winsize) {
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(first_rect, second_rect)
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}
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fn get_previous_style (frame: &Vec<TerminalCharacter>, current_index: usize, current_column: usize) -> Option<&str> {
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if current_index == 0 || current_column == 0 {
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// if true {
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return None
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};
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let mut character_count = current_column; // only check back until line break, styles before that are not relevant
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let mut prev_index = current_index;
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loop {
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character_count -= 1;
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prev_index -= 1;
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match frame.get(prev_index) {
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Some(previous_character) => {
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if let Some(previous_ansi_code) = &previous_character.ansi_code {
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return Some(previous_ansi_code)
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}
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},
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None => {
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return None;
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}
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};
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if prev_index == 0 || character_count == 0 {
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return None;
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}
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}
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}
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fn character_is_already_onscreen(
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last_frame: &Vec<TerminalCharacter>,
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current_frame: &Vec<TerminalCharacter>,
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@ -593,13 +554,11 @@ fn character_is_already_onscreen(
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let current_character = current_frame.get(index).unwrap();
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let last_character_style = match &last_character.ansi_code {
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Some(ansi_code) => Some(ansi_code.as_str()),
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// None => None,
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None => get_previous_style(&last_frame, index, *character_column),
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None => None,
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};
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let current_character_style = match ¤t_character.ansi_code {
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Some(ansi_code) => Some(ansi_code.as_str()),
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// None => None,
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None => get_previous_style(¤t_frame, index, *character_column),
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None => None,
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};
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last_character_style == current_character_style && last_character.character == current_character.character
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}
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@ -650,28 +609,12 @@ impl Screen {
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let row = i / full_screen_ws.ws_col as usize + 1;
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let col = i % full_screen_ws.ws_col as usize + 1;
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if !character_is_already_onscreen(&last_frame, &frame, i, &col) {
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// if true {
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if !last_character_was_changed {
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// goto row/col
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data_lines.push_str(&format!("\u{1b}[{};{}H", row, &col));
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// copy the last style from the last frame, or reset the style
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// this is so that if the first character of the changed string
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// has no style, it will get the appropriate one and not the one
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// from where the cursor happened to be previously
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if i > 0 {
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match get_previous_style(&frame, i, col) {
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Some(previous_ansi_code) => {
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data_lines.push_str("\u{1b}[m"); // reset style
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data_lines.push_str(&previous_ansi_code);
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},
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None => {
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data_lines.push_str("\u{1b}[m"); // reset style
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}
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};
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} else {
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data_lines.push_str("\u{1b}[m"); // reset style
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}
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data_lines.push_str(&format!("\u{1b}[{};{}H", row, &col)); // goto row/col
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data_lines.push_str("\u{1b}[m"); // reset style
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}
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// TODO: only render the ansi_code if it is different from the previous
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// rendered ansi code (previous char in this loop)
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data_lines.push_str(¤t_character.to_string());
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last_character_was_changed = true;
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} else {
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@ -762,12 +705,14 @@ fn main() {
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}
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(Some(first_terminal_read_bytes), None) => {
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let mut terminal1_output = terminal1_output.lock().unwrap();
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let now = Instant::now();
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for byte in first_terminal_read_bytes.iter() {
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vte_parser_terminal1.advance(&mut *terminal1_output, *byte);
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}
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// println!("\rParsed in {:?}", now.elapsed());
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}
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(None, Some(second_terminal_read_bytes)) => {
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let mut terminal1_output = terminal1_output.lock().unwrap();
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// let mut terminal1_output = terminal1_output.lock().unwrap();
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let mut terminal2_output = terminal2_output.lock().unwrap();
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for byte in second_terminal_read_bytes.iter() {
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vte_parser_terminal2.advance(&mut *terminal2_output, *byte);
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@ -782,9 +727,9 @@ fn main() {
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if terminal1_output.should_render || terminal2_output.should_render {
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let active_terminal = active_terminal.lock().unwrap();
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let mut screen = screen.lock().unwrap();
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// let now = Instant::now();
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let now = Instant::now();
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screen.render(&mut *terminal1_output, &mut *terminal2_output, &full_screen_ws, *active_terminal == first_terminal_pid);
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// println!("\r->R rendered in {:?}", now.elapsed());
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// println!("\r-------->R rendered in {:?}", now.elapsed());
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}
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}
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}
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