On Wayland, add missing mappings for numpad arrows

The mappings for 'keysyms::XKB_KEY_KP_{Up,Down,Left,Rigt}' were missing making the arrow keys on the numpad not sending proper 'VirtualKeyCode's.

CHANGELOG.md

@@ -10,6 +10,7 @@
 - On Web, fix `WindowEvent::ReceivedCharacter` never being sent on key input.
 - On macOS, fix compilation when targeting aarch64
 - On X11, fix `Window::request_redraw` not waking the event loop.
+- On Wayland, the keypad arrow keys are now recognized.
 
 # 0.23.0 (2020-10-02)
 

src/platform_impl/linux/wayland/seat/keyboard/keymap.rs

@@ -149,6 +149,10 @@ pub fn keysym_to_vkey(keysym: u32) -> Option<VirtualKeyCode> {
         keysyms::XKB_KEY_KP_Page_Down => Some(VirtualKeyCode::PageDown),
         keysyms::XKB_KEY_KP_Home => Some(VirtualKeyCode::Home),
         keysyms::XKB_KEY_KP_End => Some(VirtualKeyCode::End),
+        keysyms::XKB_KEY_KP_Left => Some(VirtualKeyCode::Left),
+        keysyms::XKB_KEY_KP_Up => Some(VirtualKeyCode::Up),
+        keysyms::XKB_KEY_KP_Right => Some(VirtualKeyCode::Right),
+        keysyms::XKB_KEY_KP_Down => Some(VirtualKeyCode::Down),
         // => Some(VirtualKeyCode::OEM102),
         keysyms::XKB_KEY_period => Some(VirtualKeyCode::Period),
         // => Some(VirtualKeyCode::Playpause),