| 1 | // Simple key event debugger |
| 2 | // Run with: cargo run --bin keytest |
| 3 | |
| 4 | use crossterm::{ |
| 5 | event::{self, Event, KeyCode, KeyEvent, KeyModifiers, PushKeyboardEnhancementFlags, PopKeyboardEnhancementFlags, KeyboardEnhancementFlags}, |
| 6 | terminal::{self, EnterAlternateScreen, LeaveAlternateScreen}, |
| 7 | execute, |
| 8 | }; |
| 9 | use std::io::{self, Write}; |
| 10 | |
| 11 | fn main() -> io::Result<()> { |
| 12 | terminal::enable_raw_mode()?; |
| 13 | execute!(io::stdout(), EnterAlternateScreen)?; |
| 14 | |
| 15 | // Try to enable keyboard enhancement (same flags as main editor) |
| 16 | // REPORT_ALTERNATE_KEYS makes crossterm use the shifted character directly |
| 17 | let enhanced = execute!( |
| 18 | io::stdout(), |
| 19 | PushKeyboardEnhancementFlags( |
| 20 | KeyboardEnhancementFlags::DISAMBIGUATE_ESCAPE_CODES |
| 21 | | KeyboardEnhancementFlags::REPORT_ALTERNATE_KEYS |
| 22 | ) |
| 23 | ).is_ok(); |
| 24 | |
| 25 | println!("Keyboard enhancement: {}\r", if enhanced { "enabled" } else { "disabled" }); |
| 26 | println!("Press keys to see events (Ctrl+C to quit)\r\n"); |
| 27 | |
| 28 | loop { |
| 29 | if event::poll(std::time::Duration::from_millis(100))? { |
| 30 | match event::read()? { |
| 31 | Event::Key(KeyEvent { code, modifiers, kind, state }) => { |
| 32 | let ctrl = modifiers.contains(KeyModifiers::CONTROL); |
| 33 | let alt = modifiers.contains(KeyModifiers::ALT); |
| 34 | let shift = modifiers.contains(KeyModifiers::SHIFT); |
| 35 | |
| 36 | // Show raw char value for debugging control characters |
| 37 | let char_info = if let KeyCode::Char(c) = code { |
| 38 | format!(" (0x{:02X})", c as u8) |
| 39 | } else { |
| 40 | String::new() |
| 41 | }; |
| 42 | println!( |
| 43 | "Key: {:?}{} | Modifiers: ctrl={} alt={} shift={} | Kind: {:?} | State: {:?}\r", |
| 44 | code, char_info, ctrl, alt, shift, kind, state |
| 45 | ); |
| 46 | |
| 47 | // Quit on Ctrl+C |
| 48 | if let KeyCode::Char('c') = code { |
| 49 | if ctrl { |
| 50 | break; |
| 51 | } |
| 52 | } |
| 53 | } |
| 54 | Event::Resize(w, h) => { |
| 55 | println!("Resize: {}x{}\r", w, h); |
| 56 | } |
| 57 | _ => {} |
| 58 | } |
| 59 | } |
| 60 | } |
| 61 | |
| 62 | if enhanced { |
| 63 | let _ = execute!(io::stdout(), PopKeyboardEnhancementFlags); |
| 64 | } |
| 65 | execute!(io::stdout(), LeaveAlternateScreen)?; |
| 66 | terminal::disable_raw_mode()?; |
| 67 | |
| 68 | Ok(()) |
| 69 | } |
| 70 |