bendns' repos / pattypan
small software-rendered rust tty
Diffstat (limited to 'src/keyboard.rs')
-rw-r--r--src/keyboard.rs148
1 files changed, 148 insertions, 0 deletions
diff --git a/src/keyboard.rs b/src/keyboard.rs
new file mode 100644
index 0000000..de15ed4
--- /dev/null
+++ b/src/keyboard.rs
@@ -0,0 +1,148 @@
+use atools::prelude::*;
+use minifb::Key;
+#[derive(Clone, Copy)]
+pub struct Modifiers {
+ shift: bool,
+ alt: bool,
+ ctrl: bool,
+}
+
+impl Modifiers {
+ #[implicit_fn::implicit_fn]
+ fn x(self) -> u8 {
+ [self.shift, self.alt, self.ctrl]
+ .iter()
+ .zip(0..)
+ .filter(*_.0)
+ .fold(0u8, |acc, x| acc | 1 << x.1)
+ }
+}
+
+pub struct Board {
+ mods: Modifiers,
+}
+impl Board {
+ pub fn new() -> Self {
+ Self {
+ mods: Modifiers {
+ alt: false,
+ shift: false,
+ ctrl: false,
+ },
+ }
+ }
+
+ pub fn rx(&mut self, k: Key, s: bool) -> Vec<u8> {
+ use Key::*;
+ let Self {
+ mods: Modifiers { shift, ctrl, alt },
+ } = self;
+ if !s {
+ if k == LeftAlt || k == RightAlt {
+ *alt = false;
+ }
+ if k == LeftShift || k == RightShift {
+ *shift = false;
+ }
+ if k == LeftCtrl || k == RightCtrl {
+ *ctrl = false;
+ }
+ return vec![];
+ }
+
+ let l = match k as u8 {
+ k @ 10..=34 if *shift => Some(k - 10 + b'A'),
+ k @ 10..=34 => Some(k - 10 + b'a'),
+ _ => None,
+ }
+ .map(char::from);
+ let mut v = vec![];
+ match k {
+ LeftSuper | RightSuper => {}
+ LeftAlt | RightAlt => {
+ *alt = true;
+ }
+ LeftShift | RightShift => {
+ *shift = true;
+ }
+ LeftCtrl | RightCtrl => {
+ *ctrl = true;
+ }
+ k if let Some(l) = l
+ && *ctrl =>
+ {
+ let k = l.to_ascii_uppercase() as u8 & 0x1f;
+ if *alt {
+ v.push(0x1b);
+ }
+ v.push(k);
+ }
+ _ if let Some(l) = l
+ && *alt =>
+ {
+ v.extend([0x1b, l as u8]);
+ }
+ Enter => v.extend(b"\n"),
+ Delete => v.extend(b"\x1b[3~"),
+ Insert => v.extend(b"\x1b[2~"),
+ Escape => v.extend(b"\x1b"),
+ Up | Down | Left | Right | Home | End | NumPad7 | NumPad1 => {
+ let c = match k {
+ Up => b'A',
+ Down => b'B',
+ Right => b'C',
+ Left => b'D',
+ Home | NumPad7 => b'H',
+ End | NumPad1 => b'F',
+ _ => unreachable!(),
+ };
+ if *shift | *alt | *ctrl {
+ v.extend(
+ (*b"\x1b[1;")
+ .join(1 + self.mods.x() + b'0')
+ .join(c),
+ );
+ } else {
+ v.extend((*b"\x1b[").join(c));
+ }
+ }
+ Apostrophe if *shift => v.extend(b"\""),
+ Apostrophe => v.extend(b"'"),
+ Space => v.extend(b" "),
+ Period => v.extend(b"."),
+ Slash if *shift => v.extend(b"?"),
+ Slash => v.extend(b"/"),
+ Backslash if *shift => v.extend(b"|"),
+ Backslash => v.extend(b"\\"),
+ Backspace => v.extend(b""),
+ Equal if *shift => v.extend(b"+"),
+ Equal => v.extend(b"="),
+ Tab => v.extend(b"\t"),
+ Minus if *shift => v.extend(b"_"),
+ Minus => v.extend(b"-"),
+ LeftBracket if *shift => v.extend(b"{"),
+ LeftBracket => v.extend(b"["),
+ RightBracket => v.extend(b"]"),
+ Semicolon if *shift => v.extend(b":"),
+ Semicolon => v.extend(b";"),
+ Comma => v.extend(b","),
+ Backquote if *shift => v.extend(b"~"),
+ Backquote => v.extend(b"`"),
+
+ Key0 | Key1 | Key2 | Key3 | Key4 | Key5 | Key6 | Key7
+ | Key8 | Key9
+ if *shift =>
+ {
+ v.push(b")!@#$%^&*("[k as usize]);
+ }
+
+ Key0 | Key1 | Key2 | Key3 | Key4 | Key5 | Key6 | Key7
+ | Key8 | Key9 => v.push(k as u8 + b'0'),
+
+ _ if *ctrl => v.push(k as u8 - 9),
+ _ if *shift => v.push(k as u8 - 10 + b'A'),
+ _ => v.push(k as u8 - 10 + b'a'),
+ };
+ v
+ }
+}