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path: root/src/api/wayland/keyboard.rs
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use std::collections::HashSet;

use Event as GlutinEvent;
use ElementState;
use VirtualKeyCode;

use wayland_client::ProxyId;
use wayland_client::wayland::seat::{WlKeyboardEvent,WlKeyboardKeyState};

use super::wayland_kbd::MappedKeyboardEvent;

use super::context::WaylandFocuses;

pub fn translate_kbd_events(
    focuses: &mut WaylandFocuses,
    known_surfaces: &HashSet<ProxyId>,
) -> Vec<(GlutinEvent, ProxyId)> {
    let mut out = Vec::new();
    if let Some(mkbd) = focuses.keyboard.as_mut() {
        for evt in mkbd {
            match evt {
                MappedKeyboardEvent::KeyEvent(kevt) => {
                    if let Some(surface) = focuses.keyboard_on {
                        let vkcode = match kevt.keycode {
                             1 => Some(VirtualKeyCode::Escape),
                             2 => Some(VirtualKeyCode::Key1),
                             3 => Some(VirtualKeyCode::Key2),
                             4 => Some(VirtualKeyCode::Key3),
                             5 => Some(VirtualKeyCode::Key4),
                             6 => Some(VirtualKeyCode::Key5),
                             7 => Some(VirtualKeyCode::Key6),
                             8 => Some(VirtualKeyCode::Key7),
                             9 => Some(VirtualKeyCode::Key8),
                            10 => Some(VirtualKeyCode::Key9),
                            11 => Some(VirtualKeyCode::Key0),
                            _ => kevt.as_symbol().and_then(keysym_to_vkey)
                        };
                        let text = kevt.as_utf8();
                        out.push((
                            GlutinEvent::KeyboardInput(
                                match kevt.keystate {
                                    WlKeyboardKeyState::Pressed => ElementState::Pressed,
                                    WlKeyboardKeyState::Released =>ElementState::Released
                                },
                                (kevt.keycode & 0xff) as u8,
                                vkcode
                            ),
                            surface
                        ));
                        if let Some(c) = text.and_then(|s| s.chars().next()) {
                            out.push((
                                GlutinEvent::ReceivedCharacter(c),
                                surface
                            ));
                        }
                    }
                    
                }
                MappedKeyboardEvent::Other(oevt) => match oevt {
                    WlKeyboardEvent::Enter(_, surface, _) => {
                        if known_surfaces.contains(&surface) {
                            focuses.keyboard_on = Some(surface);
                            out.push((GlutinEvent::Focused(true), surface));
                        }
                    },
                    WlKeyboardEvent::Leave(_, surface) => {
                        if known_surfaces.contains(&surface) {
                            focuses.keyboard_on = None;
                            out.push((GlutinEvent::Focused(false), surface));
                        }
                    }
                    _ => {}
                }
            }
        }
    }
    out
}

pub fn keysym_to_vkey(keysym: u32) -> Option<VirtualKeyCode> {
    use super::wayland_kbd::keysyms;
    match keysym {
        // letters
        keysyms::XKB_KEY_A | keysyms::XKB_KEY_a => Some(VirtualKeyCode::A),
        keysyms::XKB_KEY_B | keysyms::XKB_KEY_b => Some(VirtualKeyCode::B),
        keysyms::XKB_KEY_C | keysyms::XKB_KEY_c => Some(VirtualKeyCode::C),
        keysyms::XKB_KEY_D | keysyms::XKB_KEY_d => Some(VirtualKeyCode::D),
        keysyms::XKB_KEY_E | keysyms::XKB_KEY_e => Some(VirtualKeyCode::E),
        keysyms::XKB_KEY_F | keysyms::XKB_KEY_f => Some(VirtualKeyCode::F),
        keysyms::XKB_KEY_G | keysyms::XKB_KEY_g => Some(VirtualKeyCode::G),
        keysyms::XKB_KEY_H | keysyms::XKB_KEY_h => Some(VirtualKeyCode::H),
        keysyms::XKB_KEY_I | keysyms::XKB_KEY_i => Some(VirtualKeyCode::I),
        keysyms::XKB_KEY_J | keysyms::XKB_KEY_j => Some(VirtualKeyCode::J),
        keysyms::XKB_KEY_K | keysyms::XKB_KEY_k => Some(VirtualKeyCode::K),
        keysyms::XKB_KEY_L | keysyms::XKB_KEY_l => Some(VirtualKeyCode::L),
        keysyms::XKB_KEY_M | keysyms::XKB_KEY_m => Some(VirtualKeyCode::M),
        keysyms::XKB_KEY_N | keysyms::XKB_KEY_n => Some(VirtualKeyCode::N),
        keysyms::XKB_KEY_O | keysyms::XKB_KEY_o => Some(VirtualKeyCode::O),
        keysyms::XKB_KEY_P | keysyms::XKB_KEY_p => Some(VirtualKeyCode::P),
        keysyms::XKB_KEY_Q | keysyms::XKB_KEY_q => Some(VirtualKeyCode::Q),
        keysyms::XKB_KEY_R | keysyms::XKB_KEY_r => Some(VirtualKeyCode::R),
        keysyms::XKB_KEY_S | keysyms::XKB_KEY_s => Some(VirtualKeyCode::S),
        keysyms::XKB_KEY_T | keysyms::XKB_KEY_t => Some(VirtualKeyCode::T),
        keysyms::XKB_KEY_U | keysyms::XKB_KEY_u => Some(VirtualKeyCode::U),
        keysyms::XKB_KEY_V | keysyms::XKB_KEY_v => Some(VirtualKeyCode::V),
        keysyms::XKB_KEY_W | keysyms::XKB_KEY_w => Some(VirtualKeyCode::W),
        keysyms::XKB_KEY_X | keysyms::XKB_KEY_x => Some(VirtualKeyCode::X),
        keysyms::XKB_KEY_Y | keysyms::XKB_KEY_y => Some(VirtualKeyCode::Y),
        keysyms::XKB_KEY_Z | keysyms::XKB_KEY_z => Some(VirtualKeyCode::Z),
        // F--
        keysyms::XKB_KEY_F1  => Some(VirtualKeyCode::F1),
        keysyms::XKB_KEY_F2  => Some(VirtualKeyCode::F2),
        keysyms::XKB_KEY_F3  => Some(VirtualKeyCode::F3),
        keysyms::XKB_KEY_F4  => Some(VirtualKeyCode::F4),
        keysyms::XKB_KEY_F5  => Some(VirtualKeyCode::F5),
        keysyms::XKB_KEY_F6  => Some(VirtualKeyCode::F6),
        keysyms::XKB_KEY_F7  => Some(VirtualKeyCode::F7),
        keysyms::XKB_KEY_F8  => Some(VirtualKeyCode::F8),
        keysyms::XKB_KEY_F9  => Some(VirtualKeyCode::F9),
        keysyms::XKB_KEY_F10 => Some(VirtualKeyCode::F10),
        keysyms::XKB_KEY_F11 => Some(VirtualKeyCode::F11),
        keysyms::XKB_KEY_F12 => Some(VirtualKeyCode::F12),
        keysyms::XKB_KEY_F13 => Some(VirtualKeyCode::F13),
        keysyms::XKB_KEY_F14 => Some(VirtualKeyCode::F14),
        keysyms::XKB_KEY_F15 => Some(VirtualKeyCode::F15),
        // flow control
        keysyms::XKB_KEY_Print => Some(VirtualKeyCode::Snapshot),
        keysyms::XKB_KEY_Scroll_Lock => Some(VirtualKeyCode::Scroll),
        keysyms::XKB_KEY_Pause => Some(VirtualKeyCode::Pause),
        keysyms::XKB_KEY_Insert => Some(VirtualKeyCode::Insert),
        keysyms::XKB_KEY_Home => Some(VirtualKeyCode::Home),
        keysyms::XKB_KEY_Delete => Some(VirtualKeyCode::Delete),
        keysyms::XKB_KEY_End => Some(VirtualKeyCode::End),
        keysyms::XKB_KEY_Page_Down => Some(VirtualKeyCode::PageDown),
        keysyms::XKB_KEY_Page_Up => Some(VirtualKeyCode::PageUp),
        // arrows
        keysyms::XKB_KEY_Left => Some(VirtualKeyCode::Left),
        keysyms::XKB_KEY_Up => Some(VirtualKeyCode::Up),
        keysyms::XKB_KEY_Right => Some(VirtualKeyCode::Right),
        keysyms::XKB_KEY_Down => Some(VirtualKeyCode::Down),
        //
        keysyms::XKB_KEY_BackSpace => Some(VirtualKeyCode::Back),
        keysyms::XKB_KEY_Return => Some(VirtualKeyCode::Return),
        keysyms::XKB_KEY_space => Some(VirtualKeyCode::Space),
        // keypad
        keysyms::XKB_KEY_Num_Lock => Some(VirtualKeyCode::Numlock),
        keysyms::XKB_KEY_KP_0 => Some(VirtualKeyCode::Numpad0),
        keysyms::XKB_KEY_KP_1 => Some(VirtualKeyCode::Numpad1),
        keysyms::XKB_KEY_KP_2 => Some(VirtualKeyCode::Numpad2),
        keysyms::XKB_KEY_KP_3 => Some(VirtualKeyCode::Numpad3),
        keysyms::XKB_KEY_KP_4 => Some(VirtualKeyCode::Numpad4),
        keysyms::XKB_KEY_KP_5 => Some(VirtualKeyCode::Numpad5),
        keysyms::XKB_KEY_KP_6 => Some(VirtualKeyCode::Numpad6),
        keysyms::XKB_KEY_KP_7 => Some(VirtualKeyCode::Numpad7),
        keysyms::XKB_KEY_KP_8 => Some(VirtualKeyCode::Numpad8),
        keysyms::XKB_KEY_KP_9 => Some(VirtualKeyCode::Numpad9),
        // misc
        // => Some(VirtualKeyCode::AbntC1),
        // => Some(VirtualKeyCode::AbntC2),
        keysyms::XKB_KEY_plus => Some(VirtualKeyCode::Add),
        keysyms::XKB_KEY_apostrophe => Some(VirtualKeyCode::Apostrophe),
        // => Some(VirtualKeyCode::Apps),
        // => Some(VirtualKeyCode::At),
        // => Some(VirtualKeyCode::Ax),
        keysyms::XKB_KEY_backslash => Some(VirtualKeyCode::Backslash),
        // => Some(VirtualKeyCode::Calculator),
        // => Some(VirtualKeyCode::Capital),
        keysyms::XKB_KEY_colon => Some(VirtualKeyCode::Colon),
        keysyms::XKB_KEY_comma => Some(VirtualKeyCode::Comma),
        // => Some(VirtualKeyCode::Convert),
        // => Some(VirtualKeyCode::Decimal),
        // => Some(VirtualKeyCode::Divide),
        keysyms::XKB_KEY_equal => Some(VirtualKeyCode::Equals),
        // => Some(VirtualKeyCode::Grave),
        // => Some(VirtualKeyCode::Kana),
        // => Some(VirtualKeyCode::Kanji),
        keysyms::XKB_KEY_Alt_L => Some(VirtualKeyCode::LAlt),
        // => Some(VirtualKeyCode::LBracket),
        keysyms::XKB_KEY_Control_L => Some(VirtualKeyCode::LControl),
        // => Some(VirtualKeyCode::LMenu),
        keysyms::XKB_KEY_Shift_L => Some(VirtualKeyCode::LShift),
        // => Some(VirtualKeyCode::LWin),
        // => Some(VirtualKeyCode::Mail),
        // => Some(VirtualKeyCode::MediaSelect),
        // => Some(VirtualKeyCode::MediaStop),
        keysyms::XKB_KEY_minus => Some(VirtualKeyCode::Minus),
        keysyms::XKB_KEY_asterisk => Some(VirtualKeyCode::Multiply),
        // => Some(VirtualKeyCode::Mute),
        // => Some(VirtualKeyCode::MyComputer),
        // => Some(VirtualKeyCode::NextTrack),
        // => Some(VirtualKeyCode::NoConvert),
        keysyms::XKB_KEY_KP_Separator => Some(VirtualKeyCode::NumpadComma),
        keysyms::XKB_KEY_KP_Enter => Some(VirtualKeyCode::NumpadEnter),
        keysyms::XKB_KEY_KP_Equal => Some(VirtualKeyCode::NumpadEquals),
        // => Some(VirtualKeyCode::OEM102),
        // => Some(VirtualKeyCode::Period),
        // => Some(VirtualKeyCode::Playpause),
        // => Some(VirtualKeyCode::Power),
        // => Some(VirtualKeyCode::Prevtrack),
        keysyms::XKB_KEY_Alt_R => Some(VirtualKeyCode::RAlt),
        // => Some(VirtualKeyCode::RBracket),
        keysyms::XKB_KEY_Control_R => Some(VirtualKeyCode::RControl),
        // => Some(VirtualKeyCode::RMenu),
        keysyms::XKB_KEY_Shift_R => Some(VirtualKeyCode::RShift),
        // => Some(VirtualKeyCode::RWin),
        keysyms::XKB_KEY_semicolon => Some(VirtualKeyCode::Semicolon),
        keysyms::XKB_KEY_slash => Some(VirtualKeyCode::Slash),
        // => Some(VirtualKeyCode::Sleep),
        // => Some(VirtualKeyCode::Stop),
        // => Some(VirtualKeyCode::Subtract),
        // => Some(VirtualKeyCode::Sysrq),
        keysyms::XKB_KEY_Tab => Some(VirtualKeyCode::Tab),
        // => Some(VirtualKeyCode::Underline),
        // => Some(VirtualKeyCode::Unlabeled),
        keysyms::XKB_KEY_XF86AudioLowerVolume => Some(VirtualKeyCode::VolumeDown),
        keysyms::XKB_KEY_XF86AudioRaiseVolume => Some(VirtualKeyCode::VolumeUp),
        // => Some(VirtualKeyCode::Wake),
        // => Some(VirtualKeyCode::Webback),
        // => Some(VirtualKeyCode::WebFavorites),
        // => Some(VirtualKeyCode::WebForward),
        // => Some(VirtualKeyCode::WebHome),
        // => Some(VirtualKeyCode::WebRefresh),
        // => Some(VirtualKeyCode::WebSearch),
        // => Some(VirtualKeyCode::WebStop),
        // => Some(VirtualKeyCode::Yen),
        // fallback
        _ => None
    }
}