f4f44a49ae
This will help make the init procedure safer, by limiting the number of Rust objects that need to be carried to the C side and may be mangled on the way there. The second benefit is that it allows outputs to become part of new state management.
107 lines
2.5 KiB
Rust
107 lines
2.5 KiB
Rust
/*! Managing the events belonging to virtual-keyboard interface. */
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use ::keyboard::{ Modifiers, PressType };
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use ::submission::Timestamp;
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/// Standard xkb keycode
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type KeyCode = u32;
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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 std::ffi::CStr;
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use std::os::raw::{ c_char, c_void };
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use std::ptr;
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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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impl ZwpVirtualKeyboardV1 {
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pub fn null() -> Self {
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Self(ptr::null())
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}
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}
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#[repr(C)]
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pub struct KeyMap {
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fd: u32,
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fd_len: usize,
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}
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impl KeyMap {
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pub fn from_cstr(s: &CStr) -> KeyMap {
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unsafe {
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squeek_key_map_from_str(s.as_ptr())
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}
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}
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}
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impl Drop for KeyMap {
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fn drop(&mut self) {
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unsafe {
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close(self.fd as u32);
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}
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}
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}
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extern "C" {
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// From libc, to let KeyMap get deallocated.
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fn close(fd: u32);
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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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keymap: *const KeyMap,
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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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pub fn squeek_key_map_from_str(keymap_str: *const c_char) -> KeyMap;
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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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keycode: KeyCode,
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action: PressType,
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timestamp: Timestamp,
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) {
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let keycode = keycode - 8;
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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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}
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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, keymap: &c::KeyMap) {
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unsafe {
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c::eek_virtual_keyboard_update_keymap(
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self.0,
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keymap as *const c::KeyMap,
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);
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}
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}
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}
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