diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/main.rs | 104 |
1 files changed, 65 insertions, 39 deletions
diff --git a/src/main.rs b/src/main.rs index f641916..3ca8672 100644 --- a/src/main.rs +++ b/src/main.rs @@ -12,73 +12,91 @@ use tui::{ Frame, Terminal, }; +// Intended to emulate vim modes. enum InputMode { - Normal, - Insert, + Normal, // Navigating the ui. + Insert, // Editing a parameter. } +// A row in the inputs table has one of each variation. #[derive(Clone)] enum InputParam { - RPM(String), // Revolutions per minute - VE(String), // Volumetric efficiency - MAP(String), // Manifold absolute pressure + Rpm(String), // Revolutions per minute + Ve(String), // Volumetric efficiency + Map(String), // Manifold absolute pressure } impl InputParam { + /* Acts like the push() method of a Vec. + * Appends the given char to the end of the string contained by the + * InputParam. + */ fn push(&mut self, c: char) { match self { - Self::RPM(rpm) => { + Self::Rpm(rpm) => { rpm.push(c); - *self = Self::RPM(rpm.to_string()); + *self = Self::Rpm(rpm.to_string()); } - Self::VE(ve) => { + Self::Ve(ve) => { ve.push(c); - *self = Self::VE(ve.to_string()); + *self = Self::Ve(ve.to_string()); } - Self::MAP(map) => { + Self::Map(map) => { map.push(c); - *self = Self::MAP(map.to_string()); + *self = Self::Map(map.to_string()); } } } + /* Acts like the pop() method of a Vec. + * Removes the last char from the string contained by the InputParam. + */ fn pop(&mut self) { match self { - Self::RPM(rpm) => { + Self::Rpm(rpm) => { rpm.pop(); - *self = Self::RPM(rpm.to_string()); + *self = Self::Rpm(rpm.to_string()); } - Self::VE(ve) => { + Self::Ve(ve) => { ve.pop(); - *self = Self::RPM(ve.to_string()); + *self = Self::Rpm(ve.to_string()); } - Self::MAP(map) => { + Self::Map(map) => { map.pop(); - *self = Self::MAP(map.to_string()); + *self = Self::Map(map.to_string()); } } } + // Return a copy of the string contained by the InputParam. fn string(&self) -> String { match self { - Self::RPM(rpm) => rpm.to_string(), - Self::VE(ve) => ve.to_string(), - Self::MAP(map) => map.to_string(), + Self::Rpm(rpm) => rpm.to_string(), + Self::Ve(ve) => ve.to_string(), + Self::Map(map) => map.to_string(), } } + /* next() and previous() allow InputParam to act as a circular iterator of + * sorts. next() will return the next variation as they are defined. When + * it reaches the end, the first variation will be returned: + * RPM->VE->MAP->RPM->etc... + * previous() simply goes the opposite direction: + * MAP->VE->RPM->MAP->etc... + */ fn next(&self) -> Self { match self { - Self::RPM(_) => Self::VE(String::new()), - Self::VE(_) => Self::MAP(String::new()), - Self::MAP(_) => Self::RPM(String::new()), + Self::Rpm(_) => Self::Ve(String::new()), + Self::Ve(_) => Self::Map(String::new()), + Self::Map(_) => Self::Rpm(String::new()), } } fn previous(&self) -> Self { match self { - Self::RPM(_) => Self::MAP(String::new()), - Self::VE(_) => Self::RPM(String::new()), - Self::MAP(_) => Self::VE(String::new()), + Self::Rpm(_) => Self::Map(String::new()), + Self::Ve(_) => Self::Rpm(String::new()), + Self::Map(_) => Self::Ve(String::new()), } } } +// A row in the inputs table. Contains one of each variation of InputParam. #[derive(Clone)] struct Row { rpm: InputParam, @@ -88,13 +106,14 @@ struct Row { impl Default for Row { fn default() -> Self { Self { - rpm: InputParam::RPM(String::from("7000")), - ve: InputParam::VE(String::from("95")), - map: InputParam::MAP(String::from("200")), + rpm: InputParam::Rpm(String::from("7000")), + ve: InputParam::Ve(String::from("95")), + map: InputParam::Map(String::from("200")), } } } +// Holds the state of the application. struct App { rows: Vec<Row>, @@ -108,7 +127,7 @@ impl Default for App { App { rows: vec![Row::default()], selected_row: 0, - selected_column: InputParam::RPM(String::new()), + selected_column: InputParam::Rpm(String::new()), input_mode: InputMode::Normal, } } @@ -142,12 +161,14 @@ fn main() -> Result<(), Box<dyn Error>> { Ok(()) } +// Input handling fn run_app<B: Backend>(terminal: &mut Terminal<B>, mut app: App) -> io::Result<()> { loop { terminal.draw(|f| ui(f, &app))?; if let Event::Key(key) = event::read()? { match app.input_mode { + // Navigating InputMode::Normal => match key.code { // Enter insert mode KeyCode::Char('i') => { @@ -206,25 +227,27 @@ fn run_app<B: Backend>(terminal: &mut Terminal<B>, mut app: App) -> io::Result<( KeyCode::Enter => { app.input_mode = InputMode::Normal; } + // Append a caracter to the currently selected parameter. KeyCode::Char(c) => match app.selected_column { - InputParam::RPM(_) => { + InputParam::Rpm(_) => { app.rows[app.selected_row].rpm.push(c); } - InputParam::VE(_) => { + InputParam::Ve(_) => { app.rows[app.selected_row].ve.push(c); } - InputParam::MAP(_) => { + InputParam::Map(_) => { app.rows[app.selected_row].map.push(c); } }, + // Remove a character from the currently selected parameter. KeyCode::Backspace => match app.selected_column { - InputParam::RPM(_) => { + InputParam::Rpm(_) => { app.rows[app.selected_row].rpm.pop(); } - InputParam::VE(_) => { + InputParam::Ve(_) => { app.rows[app.selected_row].ve.pop(); } - InputParam::MAP(_) => { + InputParam::Map(_) => { app.rows[app.selected_row].map.pop(); } }, @@ -248,6 +271,9 @@ fn ui<B: Backend>(f: &mut Frame<B>, app: &App) { ) .split(f.size()); + /* This is used so I can have named fields instead of indexing a vector of + * Cells when styling the selected input parameter. + */ struct VirtualRow<'a> { rpm: Cell<'a>, ve: Cell<'a>, @@ -266,9 +292,9 @@ fn ui<B: Backend>(f: &mut Frame<B>, app: &App) { // Highlight the selected parameter let selected_parameter = match app.selected_column { - InputParam::RPM(_) => &mut rows[app.selected_row].rpm, - InputParam::VE(_) => &mut rows[app.selected_row].ve, - InputParam::MAP(_) => &mut rows[app.selected_row].map, + InputParam::Rpm(_) => &mut rows[app.selected_row].rpm, + InputParam::Ve(_) => &mut rows[app.selected_row].ve, + InputParam::Map(_) => &mut rows[app.selected_row].map, }; *selected_parameter = selected_parameter.clone().style(match app.input_mode { InputMode::Normal => Style::default().fg(Color::Yellow), |