better event loop :)
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parent
1e827acfdd
commit
7d1a2bc412
2 changed files with 66 additions and 54 deletions
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@ -21,7 +21,7 @@ pub struct Editor {
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scroll: usize,
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cursor: Cursor,
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path: Option<String>,
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pub quit: bool,
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active: bool,
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}
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#[derive(Debug)]
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@ -51,22 +51,30 @@ impl Editor {
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scroll: 0,
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cursor: Cursor { line: 0, column: 0 },
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path,
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quit: false,
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active: false,
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};
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this.find_lines();
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this
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}
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pub fn name(&self) -> &str {
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self.path.as_ref().map_or("untitled", |s| &s)
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self.path.as_ref().map_or("untitled", |s| s)
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}
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pub fn input(&mut self) {
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pub fn open(&mut self) {
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self.active = true;
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while self.active {
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self.draw();
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self.input();
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}
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}
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fn input(&mut self) {
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for event in stdin().events().take(1).flatten() {
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// dbg!(&event);
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if let Event::Key(key) = event {
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match key {
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Key::Esc => self.quit = true,
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Key::Esc => self.active = false,
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Key::Char(char) => self.insert_char(char),
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Key::Backspace => self.backspace(),
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Key::Delete => self.delete(),
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@ -83,6 +91,42 @@ impl Editor {
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}
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}
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fn draw(&self) {
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print!("{}", clear::All);
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let max_rows = terminal_size().unwrap().1 as usize - 1;
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let end = (self.scroll + max_rows).min(self.lines.len());
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let visible_rows = self.scroll..end;
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for (line_index, line) in self.lines[visible_rows].iter().enumerate() {
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let text = &self.text[line.clone()];
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print!(
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"{}{}",
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cursor::Goto(1, line_index as u16 + 1),
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text.replace('\t', &" ".repeat(TAB_SIZE))
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);
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}
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self.status_line();
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print!(
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"{}",
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cursor::Goto(
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self.physical_column() as u16 + 1,
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(self.cursor.line - self.scroll) as u16 + 1
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)
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);
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stdout().flush().unwrap();
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}
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fn status_line(&self) {
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print!(
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"{}({}, {}) {}",
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cursor::Goto(1, terminal_size().unwrap().1),
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self.cursor.line,
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self.physical_column(),
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self.name(),
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);
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}
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fn move_left(&mut self) {
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if self.cursor.column > 0 {
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self.cursor.column = self.prev_char_index() - self.current_line().start;
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@ -168,38 +212,6 @@ impl Editor {
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self.lines.push(this_line);
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}
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pub fn draw(&self) {
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print!("{}", clear::All);
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let max_rows = terminal_size().unwrap().1 as usize - 1;
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let end = (self.scroll + max_rows).min(self.lines.len());
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let visible_rows = self.scroll..end;
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for (line_index, line) in self.lines[visible_rows].iter().enumerate() {
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let text = &self.text[line.clone()];
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print!(
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"{}{}",
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cursor::Goto(1, line_index as u16 + 1),
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text.replace('\t', &" ".repeat(TAB_SIZE))
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);
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}
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print!(
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"{}({}, {})",
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cursor::Goto(1, terminal_size().unwrap().1),
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self.cursor.line,
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self.cursor.column
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);
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print!(
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"{}",
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cursor::Goto(
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self.physical_column() as u16 + 1,
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(self.cursor.line - self.scroll) as u16 + 1
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)
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);
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stdout().flush().unwrap();
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}
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fn insert_char(&mut self, ch: char) {
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// eprintln!("inserting {ch} at {}", self.index());
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self.text.insert(self.char_index(), ch);
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28
src/main.rs
28
src/main.rs
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@ -21,7 +21,6 @@ fn main() {
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struct Navigator {
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editors: Vec<Editor>,
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active: Option<usize>,
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selected: Option<usize>,
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path: String,
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_term: RawTerminal<Stdout>,
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@ -33,8 +32,7 @@ impl Navigator {
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let editors = vec![Editor::new(immediate_file)];
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Self {
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editors,
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active: Some(0),
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selected: None,
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selected: Some(0),
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path: String::new(), // TODO
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_term: term,
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}
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@ -45,23 +43,18 @@ impl Navigator {
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stdout().flush().unwrap();
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loop {
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if let Some(index) = self.active {
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self.editors[index].draw();
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self.editors[index].input();
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if self.editors[index].quit {
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self.selected = self.active;
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self.active = None;
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}
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} else {
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self.draw();
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self.input();
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}
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}
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}
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fn draw(&self) {
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print!("{}{}Open editors: {}", clear::All, Goto(1,1), self.editors.len());
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print!(
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"{}{}Open editors: {}",
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clear::All,
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Goto(1, 1),
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self.editors.len()
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);
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for (index, editor) in self.editors.iter().enumerate() {
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if Some(index) == self.selected {
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@ -79,12 +72,19 @@ impl Navigator {
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if let Event::Key(key) = event {
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match key {
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Key::Esc => self.quit(),
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Key::Char('\n') => self.open_selected(),
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_ => (),
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}
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}
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}
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}
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fn open_selected(&mut self) {
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if let Some(index) = self.selected {
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self.editors[index].open();
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}
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}
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fn quit(&self) {
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print!("{}", clear::All);
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exit(0);
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