100 lines
3.4 KiB
Rust
100 lines
3.4 KiB
Rust
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// client/src/input/keymap.rs
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use evdev::KeyCode;
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/// Return Some(usage) if we have a known mapping from evdev::KeyCode -> HID usage code
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pub fn keycode_to_usage(key: KeyCode) -> Option<u8> {
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match key {
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// Letters
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KeyCode::KEY_A => Some(0x04),
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KeyCode::KEY_B => Some(0x05),
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KeyCode::KEY_C => Some(0x06),
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KeyCode::KEY_D => Some(0x07),
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KeyCode::KEY_E => Some(0x08),
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KeyCode::KEY_F => Some(0x09),
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KeyCode::KEY_G => Some(0x0A),
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KeyCode::KEY_H => Some(0x0B),
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KeyCode::KEY_I => Some(0x0C),
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KeyCode::KEY_J => Some(0x0D),
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KeyCode::KEY_K => Some(0x0E),
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KeyCode::KEY_L => Some(0x0F),
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KeyCode::KEY_M => Some(0x10),
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KeyCode::KEY_N => Some(0x11),
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KeyCode::KEY_O => Some(0x12),
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KeyCode::KEY_P => Some(0x13),
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KeyCode::KEY_Q => Some(0x14),
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KeyCode::KEY_R => Some(0x15),
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KeyCode::KEY_S => Some(0x16),
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KeyCode::KEY_T => Some(0x17),
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KeyCode::KEY_U => Some(0x18),
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KeyCode::KEY_V => Some(0x19),
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KeyCode::KEY_W => Some(0x1A),
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KeyCode::KEY_X => Some(0x1B),
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KeyCode::KEY_Y => Some(0x1C),
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KeyCode::KEY_Z => Some(0x1D),
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// Number row
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KeyCode::KEY_1 => Some(0x1E),
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KeyCode::KEY_2 => Some(0x1F),
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KeyCode::KEY_3 => Some(0x20),
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KeyCode::KEY_4 => Some(0x21),
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KeyCode::KEY_5 => Some(0x22),
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KeyCode::KEY_6 => Some(0x23),
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KeyCode::KEY_7 => Some(0x24),
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KeyCode::KEY_8 => Some(0x25),
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KeyCode::KEY_9 => Some(0x26),
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KeyCode::KEY_0 => Some(0x27),
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// Common punctuation
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KeyCode::KEY_ENTER => Some(0x28),
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KeyCode::KEY_ESC => Some(0x29),
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KeyCode::KEY_BACKSPACE => Some(0x2A),
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KeyCode::KEY_TAB => Some(0x2B),
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KeyCode::KEY_SPACE => Some(0x2C),
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KeyCode::KEY_MINUS => Some(0x2D),
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KeyCode::KEY_EQUAL => Some(0x2E),
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KeyCode::KEY_LEFTBRACE => Some(0x2F),
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KeyCode::KEY_RIGHTBRACE => Some(0x30),
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KeyCode::KEY_BACKSLASH => Some(0x31),
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KeyCode::KEY_SEMICOLON => Some(0x33),
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KeyCode::KEY_APOSTROPHE => Some(0x34),
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KeyCode::KEY_GRAVE => Some(0x35),
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KeyCode::KEY_COMMA => Some(0x36),
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KeyCode::KEY_DOT => Some(0x37),
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KeyCode::KEY_SLASH => Some(0x38),
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// Function keys
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KeyCode::KEY_CAPSLOCK => Some(0x39),
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KeyCode::KEY_F1 => Some(0x3A),
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KeyCode::KEY_F2 => Some(0x3B),
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KeyCode::KEY_F3 => Some(0x3C),
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KeyCode::KEY_F4 => Some(0x3D),
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KeyCode::KEY_F5 => Some(0x3E),
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KeyCode::KEY_F6 => Some(0x3F),
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KeyCode::KEY_F7 => Some(0x40),
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KeyCode::KEY_F8 => Some(0x41),
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KeyCode::KEY_F9 => Some(0x42),
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KeyCode::KEY_F10 => Some(0x43),
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KeyCode::KEY_F11 => Some(0x44),
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KeyCode::KEY_F12 => Some(0x45),
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// We'll handle modifiers (ctrl, shift, alt, meta) in `is_modifier()`
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_ => None,
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}
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}
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/// If a key is a modifier, return the bit(s) to set in HID byte[0].
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pub fn is_modifier(key: KeyCode) -> Option<u8> {
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match key {
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KeyCode::KEY_LEFTCTRL => Some(0x01),
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KeyCode::KEY_LEFTSHIFT => Some(0x02),
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KeyCode::KEY_LEFTALT => Some(0x04),
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KeyCode::KEY_LEFTMETA => Some(0x08),
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KeyCode::KEY_RIGHTCTRL => Some(0x10),
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KeyCode::KEY_RIGHTSHIFT => Some(0x20),
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KeyCode::KEY_RIGHTALT => Some(0x40),
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KeyCode::KEY_RIGHTMETA => Some(0x80),
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_ => None,
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}
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}
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