92e9d994fe
Control and Alt are special in that they aren't expected to switch levels, and so don't need to change what characters are output. Use in layouts by adding `modifier: Control` or `modifier: Alt` in place of `text: "foo"`. The latching of the modifier will force the keyboard to emit raw key presses and prevent it from outputting text.
89 lines
2.8 KiB
Rust
89 lines
2.8 KiB
Rust
/*! Managing the events belonging to virtual-keyboard interface. */
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use ::keyboard::{ KeyCode, Modifiers, PressType };
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use ::layout::c::LevelKeyboard;
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use ::submission::Timestamp;
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/// Gathers stuff defined in C or called by C
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pub mod c {
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use super::*;
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use std::os::raw::c_void;
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#[repr(transparent)]
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#[derive(Clone, Copy)]
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pub struct ZwpVirtualKeyboardV1(*const c_void);
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#[no_mangle]
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extern "C" {
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pub fn eek_virtual_keyboard_v1_key(
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virtual_keyboard: ZwpVirtualKeyboardV1,
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timestamp: u32,
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keycode: u32,
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press: u32,
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);
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pub fn eek_virtual_keyboard_update_keymap(
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virtual_keyboard: ZwpVirtualKeyboardV1,
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keyboard: LevelKeyboard,
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);
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pub fn eek_virtual_keyboard_set_modifiers(
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virtual_keyboard: ZwpVirtualKeyboardV1,
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modifiers: u32,
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);
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}
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}
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/// Layout-independent backend. TODO: Have one instance per program or seat
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pub struct VirtualKeyboard(pub c::ZwpVirtualKeyboardV1);
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impl VirtualKeyboard {
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// TODO: error out if keymap not set
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pub fn switch(
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&self,
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keycodes: &Vec<KeyCode>,
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action: PressType,
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timestamp: Timestamp,
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) {
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let keycodes_count = keycodes.len();
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for keycode in keycodes.iter() {
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let keycode = keycode - 8;
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match (action, keycodes_count) {
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// Pressing a key made out of a single keycode is simple:
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// press on press, release on release.
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(_, 1) => unsafe {
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c::eek_virtual_keyboard_v1_key(
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self.0, timestamp.0, keycode, action.clone() as u32
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);
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},
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// A key made of multiple keycodes
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// has to submit them one after the other
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(PressType::Pressed, _) => unsafe {
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c::eek_virtual_keyboard_v1_key(
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self.0, timestamp.0, keycode, PressType::Pressed as u32
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);
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c::eek_virtual_keyboard_v1_key(
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self.0, timestamp.0, keycode, PressType::Released as u32
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);
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},
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// Design choice here: submit multiple all at press time
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// and do nothing at release time
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(PressType::Released, _) => {},
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}
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}
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}
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pub fn set_modifiers_state(&self, modifiers: Modifiers) {
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let modifiers = modifiers.bits() as u32;
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unsafe {
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c::eek_virtual_keyboard_set_modifiers(self.0, modifiers);
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}
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}
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pub fn update_keymap(&self, keyboard: LevelKeyboard) {
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unsafe {
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c::eek_virtual_keyboard_update_keymap(self.0, keyboard);
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}
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}
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}
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