1use std::cell::RefCell;
2use std::ffi::OsString;
3use std::ops::Deref;
4use std::rc::{Rc, Weak};
5use std::time::{Duration, Instant};
6
7use calloop::generic::{FdWrapper, Generic};
8use calloop::{EventLoop, LoopHandle, RegistrationToken};
9
10use collections::HashMap;
11use copypasta::x11_clipboard::{Clipboard, Primary, X11ClipboardContext};
12use copypasta::ClipboardProvider;
13
14use util::ResultExt;
15use x11rb::connection::{Connection, RequestConnection};
16use x11rb::cursor;
17use x11rb::errors::ConnectionError;
18use x11rb::protocol::randr::ConnectionExt as _;
19use x11rb::protocol::xinput::ConnectionExt;
20use x11rb::protocol::xkb::ConnectionExt as _;
21use x11rb::protocol::xproto::{ChangeWindowAttributesAux, ConnectionExt as _};
22use x11rb::protocol::{randr, render, xinput, xkb, xproto, Event};
23use x11rb::resource_manager::Database;
24use x11rb::xcb_ffi::XCBConnection;
25use xim::{x11rb::X11rbClient, Client};
26use xim::{AttributeName, InputStyle};
27use xkbc::x11::ffi::{XKB_X11_MIN_MAJOR_XKB_VERSION, XKB_X11_MIN_MINOR_XKB_VERSION};
28use xkbcommon::xkb as xkbc;
29
30use crate::platform::linux::LinuxClient;
31use crate::platform::{LinuxCommon, PlatformWindow};
32use crate::{
33 modifiers_from_xinput_info, point, px, AnyWindowHandle, Bounds, CursorStyle, DisplayId,
34 Keystroke, Modifiers, ModifiersChangedEvent, Pixels, PlatformDisplay, PlatformInput, Point,
35 ScrollDelta, Size, TouchPhase, WindowParams, X11Window,
36};
37
38use super::{
39 super::{open_uri_internal, SCROLL_LINES},
40 X11Display, X11WindowStatePtr, XcbAtoms,
41};
42use super::{button_of_key, modifiers_from_state, pressed_button_from_mask};
43use super::{XimCallbackEvent, XimHandler};
44use crate::platform::linux::is_within_click_distance;
45use crate::platform::linux::platform::DOUBLE_CLICK_INTERVAL;
46use crate::platform::linux::xdg_desktop_portal::{Event as XDPEvent, XDPEventSource};
47
48pub(super) const XINPUT_MASTER_DEVICE: u16 = 1;
49
50pub(crate) struct WindowRef {
51 window: X11WindowStatePtr,
52 refresh_event_token: RegistrationToken,
53}
54
55impl WindowRef {
56 pub fn handle(&self) -> AnyWindowHandle {
57 self.window.state.borrow().handle
58 }
59}
60
61impl Deref for WindowRef {
62 type Target = X11WindowStatePtr;
63
64 fn deref(&self) -> &Self::Target {
65 &self.window
66 }
67}
68
69#[derive(Debug)]
70#[non_exhaustive]
71pub enum EventHandlerError {
72 XCBConnectionError(ConnectionError),
73 XIMClientError(xim::ClientError),
74}
75
76impl std::error::Error for EventHandlerError {}
77
78impl std::fmt::Display for EventHandlerError {
79 fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
80 match self {
81 EventHandlerError::XCBConnectionError(err) => err.fmt(f),
82 EventHandlerError::XIMClientError(err) => err.fmt(f),
83 }
84 }
85}
86
87impl From<ConnectionError> for EventHandlerError {
88 fn from(err: ConnectionError) -> Self {
89 EventHandlerError::XCBConnectionError(err)
90 }
91}
92
93impl From<xim::ClientError> for EventHandlerError {
94 fn from(err: xim::ClientError) -> Self {
95 EventHandlerError::XIMClientError(err)
96 }
97}
98
99pub struct X11ClientState {
100 pub(crate) loop_handle: LoopHandle<'static, X11Client>,
101 pub(crate) event_loop: Option<calloop::EventLoop<'static, X11Client>>,
102
103 pub(crate) last_click: Instant,
104 pub(crate) last_location: Point<Pixels>,
105 pub(crate) current_count: usize,
106
107 pub(crate) scale_factor: f32,
108
109 pub(crate) xcb_connection: Rc<XCBConnection>,
110 pub(crate) x_root_index: usize,
111 pub(crate) _resource_database: Database,
112 pub(crate) atoms: XcbAtoms,
113 pub(crate) windows: HashMap<xproto::Window, WindowRef>,
114 pub(crate) focused_window: Option<xproto::Window>,
115 pub(crate) xkb: xkbc::State,
116 pub(crate) ximc: Option<X11rbClient<Rc<XCBConnection>>>,
117 pub(crate) xim_handler: Option<XimHandler>,
118 pub modifiers: Modifiers,
119
120 pub(crate) compose_state: xkbc::compose::State,
121 pub(crate) pre_edit_text: Option<String>,
122 pub(crate) composing: bool,
123 pub(crate) cursor_handle: cursor::Handle,
124 pub(crate) cursor_styles: HashMap<xproto::Window, CursorStyle>,
125 pub(crate) cursor_cache: HashMap<CursorStyle, xproto::Cursor>,
126
127 pub(crate) scroll_class_data: Vec<xinput::DeviceClassDataScroll>,
128 pub(crate) scroll_x: Option<f32>,
129 pub(crate) scroll_y: Option<f32>,
130
131 pub(crate) common: LinuxCommon,
132 pub(crate) clipboard: X11ClipboardContext<Clipboard>,
133 pub(crate) primary: X11ClipboardContext<Primary>,
134}
135
136#[derive(Clone)]
137pub struct X11ClientStatePtr(pub Weak<RefCell<X11ClientState>>);
138
139impl X11ClientStatePtr {
140 pub fn drop_window(&self, x_window: u32) {
141 let client = X11Client(self.0.upgrade().expect("client already dropped"));
142 let mut state = client.0.borrow_mut();
143
144 if let Some(window_ref) = state.windows.remove(&x_window) {
145 state.loop_handle.remove(window_ref.refresh_event_token);
146 }
147
148 state.cursor_styles.remove(&x_window);
149
150 if state.windows.is_empty() {
151 state.common.signal.stop();
152 }
153 }
154}
155
156#[derive(Clone)]
157pub(crate) struct X11Client(Rc<RefCell<X11ClientState>>);
158
159impl X11Client {
160 pub(crate) fn new() -> Self {
161 let event_loop = EventLoop::try_new().unwrap();
162
163 let (common, main_receiver) = LinuxCommon::new(event_loop.get_signal());
164
165 let handle = event_loop.handle();
166
167 handle
168 .insert_source(main_receiver, {
169 let handle = handle.clone();
170 move |event, _, _: &mut X11Client| {
171 if let calloop::channel::Event::Msg(runnable) = event {
172 // Insert the runnables as idle callbacks, so we make sure that user-input and X11
173 // events have higher priority and runnables are only worked off after the event
174 // callbacks.
175 handle.insert_idle(|_| {
176 runnable.run();
177 });
178 }
179 }
180 })
181 .unwrap();
182
183 let (xcb_connection, x_root_index) = XCBConnection::connect(None).unwrap();
184 xcb_connection
185 .prefetch_extension_information(xkb::X11_EXTENSION_NAME)
186 .unwrap();
187 xcb_connection
188 .prefetch_extension_information(randr::X11_EXTENSION_NAME)
189 .unwrap();
190 xcb_connection
191 .prefetch_extension_information(render::X11_EXTENSION_NAME)
192 .unwrap();
193 xcb_connection
194 .prefetch_extension_information(xinput::X11_EXTENSION_NAME)
195 .unwrap();
196
197 let xinput_version = xcb_connection
198 .xinput_xi_query_version(2, 0)
199 .unwrap()
200 .reply()
201 .unwrap();
202 assert!(
203 xinput_version.major_version >= 2,
204 "XInput Extension v2 not supported."
205 );
206
207 let master_device_query = xcb_connection
208 .xinput_xi_query_device(XINPUT_MASTER_DEVICE)
209 .unwrap()
210 .reply()
211 .unwrap();
212 let scroll_class_data = master_device_query
213 .infos
214 .iter()
215 .find(|info| info.type_ == xinput::DeviceType::MASTER_POINTER)
216 .unwrap()
217 .classes
218 .iter()
219 .filter_map(|class| class.data.as_scroll())
220 .map(|class| *class)
221 .collect::<Vec<_>>();
222
223 let atoms = XcbAtoms::new(&xcb_connection).unwrap();
224 let xkb = xcb_connection
225 .xkb_use_extension(XKB_X11_MIN_MAJOR_XKB_VERSION, XKB_X11_MIN_MINOR_XKB_VERSION)
226 .unwrap();
227
228 let atoms = atoms.reply().unwrap();
229 let xkb = xkb.reply().unwrap();
230 let events = xkb::EventType::STATE_NOTIFY;
231 xcb_connection
232 .xkb_select_events(
233 xkb::ID::USE_CORE_KBD.into(),
234 0u8.into(),
235 events,
236 0u8.into(),
237 0u8.into(),
238 &xkb::SelectEventsAux::new(),
239 )
240 .unwrap();
241 assert!(xkb.supported);
242
243 let xkb_context = xkbc::Context::new(xkbc::CONTEXT_NO_FLAGS);
244 let xkb_state = {
245 let xkb_device_id = xkbc::x11::get_core_keyboard_device_id(&xcb_connection);
246 let xkb_keymap = xkbc::x11::keymap_new_from_device(
247 &xkb_context,
248 &xcb_connection,
249 xkb_device_id,
250 xkbc::KEYMAP_COMPILE_NO_FLAGS,
251 );
252 xkbc::x11::state_new_from_device(&xkb_keymap, &xcb_connection, xkb_device_id)
253 };
254 let compose_state = {
255 let locale = std::env::var_os("LC_CTYPE").unwrap_or(OsString::from("C"));
256 let table = xkbc::compose::Table::new_from_locale(
257 &xkb_context,
258 &locale,
259 xkbc::compose::COMPILE_NO_FLAGS,
260 )
261 .log_err()
262 .unwrap();
263 xkbc::compose::State::new(&table, xkbc::compose::STATE_NO_FLAGS)
264 };
265
266 let resource_database = x11rb::resource_manager::new_from_default(&xcb_connection).unwrap();
267
268 let scale_factor = resource_database
269 .get_value("Xft.dpi", "Xft.dpi")
270 .ok()
271 .flatten()
272 .map(|dpi: f32| dpi / 96.0)
273 .unwrap_or(1.0);
274
275 let cursor_handle = cursor::Handle::new(&xcb_connection, x_root_index, &resource_database)
276 .unwrap()
277 .reply()
278 .unwrap();
279
280 let clipboard = X11ClipboardContext::<Clipboard>::new().unwrap();
281 let primary = X11ClipboardContext::<Primary>::new().unwrap();
282
283 let xcb_connection = Rc::new(xcb_connection);
284
285 let ximc = X11rbClient::init(Rc::clone(&xcb_connection), x_root_index, None).ok();
286 let xim_handler = if ximc.is_some() {
287 Some(XimHandler::new())
288 } else {
289 None
290 };
291
292 // Safety: Safe if xcb::Connection always returns a valid fd
293 let fd = unsafe { FdWrapper::new(Rc::clone(&xcb_connection)) };
294
295 handle
296 .insert_source(
297 Generic::new_with_error::<EventHandlerError>(
298 fd,
299 calloop::Interest::READ,
300 calloop::Mode::Level,
301 ),
302 {
303 let xcb_connection = xcb_connection.clone();
304 move |_readiness, _, client| {
305 while let Some(event) = xcb_connection.poll_for_event()? {
306 let mut state = client.0.borrow_mut();
307 if state.ximc.is_none() || state.xim_handler.is_none() {
308 drop(state);
309 client.handle_event(event);
310 continue;
311 }
312
313 let mut ximc = state.ximc.take().unwrap();
314 let mut xim_handler = state.xim_handler.take().unwrap();
315 let xim_connected = xim_handler.connected;
316 drop(state);
317
318 let xim_filtered = match ximc.filter_event(&event, &mut xim_handler) {
319 Ok(handled) => handled,
320 Err(err) => {
321 log::error!("XIMClientError: {}", err);
322 false
323 }
324 };
325 let xim_callback_event = xim_handler.last_callback_event.take();
326
327 let mut state = client.0.borrow_mut();
328 state.ximc = Some(ximc);
329 state.xim_handler = Some(xim_handler);
330 drop(state);
331
332 if let Some(event) = xim_callback_event {
333 client.handle_xim_callback_event(event);
334 }
335
336 if xim_filtered {
337 continue;
338 }
339
340 if xim_connected {
341 client.xim_handle_event(event);
342 } else {
343 client.handle_event(event);
344 }
345 }
346
347 Ok(calloop::PostAction::Continue)
348 }
349 },
350 )
351 .expect("Failed to initialize x11 event source");
352
353 handle
354 .insert_source(XDPEventSource::new(&common.background_executor), {
355 move |event, _, client| match event {
356 XDPEvent::WindowAppearance(appearance) => {
357 client.with_common(|common| common.appearance = appearance);
358 for (_, window) in &mut client.0.borrow_mut().windows {
359 window.window.set_appearance(appearance);
360 }
361 }
362 }
363 })
364 .unwrap();
365
366 X11Client(Rc::new(RefCell::new(X11ClientState {
367 modifiers: Modifiers::default(),
368 event_loop: Some(event_loop),
369 loop_handle: handle,
370 common,
371 last_click: Instant::now(),
372 last_location: Point::new(px(0.0), px(0.0)),
373 current_count: 0,
374 scale_factor,
375
376 xcb_connection,
377 x_root_index,
378 _resource_database: resource_database,
379 atoms,
380 windows: HashMap::default(),
381 focused_window: None,
382 xkb: xkb_state,
383 ximc,
384 xim_handler,
385
386 compose_state: compose_state,
387 pre_edit_text: None,
388 composing: false,
389
390 cursor_handle,
391 cursor_styles: HashMap::default(),
392 cursor_cache: HashMap::default(),
393
394 scroll_class_data,
395 scroll_x: None,
396 scroll_y: None,
397
398 clipboard,
399 primary,
400 })))
401 }
402
403 pub fn enable_ime(&self) {
404 let mut state = self.0.borrow_mut();
405 if state.ximc.is_none() {
406 return;
407 }
408
409 let mut ximc = state.ximc.take().unwrap();
410 let mut xim_handler = state.xim_handler.take().unwrap();
411 let mut ic_attributes = ximc
412 .build_ic_attributes()
413 .push(
414 AttributeName::InputStyle,
415 InputStyle::PREEDIT_CALLBACKS
416 | InputStyle::STATUS_NOTHING
417 | InputStyle::PREEDIT_NONE,
418 )
419 .push(AttributeName::ClientWindow, xim_handler.window)
420 .push(AttributeName::FocusWindow, xim_handler.window);
421
422 let window_id = state.focused_window;
423 drop(state);
424 if let Some(window_id) = window_id {
425 let window = self.get_window(window_id).unwrap();
426 if let Some(area) = window.get_ime_area() {
427 ic_attributes =
428 ic_attributes.nested_list(xim::AttributeName::PreeditAttributes, |b| {
429 b.push(
430 xim::AttributeName::SpotLocation,
431 xim::Point {
432 x: u32::from(area.origin.x + area.size.width) as i16,
433 y: u32::from(area.origin.y + area.size.height) as i16,
434 },
435 );
436 });
437 }
438 }
439 ximc.create_ic(xim_handler.im_id, ic_attributes.build())
440 .ok();
441 state = self.0.borrow_mut();
442 state.xim_handler = Some(xim_handler);
443 state.ximc = Some(ximc);
444 }
445
446 pub fn disable_ime(&self) {
447 let mut state = self.0.borrow_mut();
448 state.composing = false;
449 if let Some(mut ximc) = state.ximc.take() {
450 let xim_handler = state.xim_handler.as_ref().unwrap();
451 ximc.destroy_ic(xim_handler.im_id, xim_handler.ic_id).ok();
452 state.ximc = Some(ximc);
453 }
454 }
455
456 fn get_window(&self, win: xproto::Window) -> Option<X11WindowStatePtr> {
457 let state = self.0.borrow();
458 state
459 .windows
460 .get(&win)
461 .map(|window_reference| window_reference.window.clone())
462 }
463
464 fn handle_event(&self, event: Event) -> Option<()> {
465 match event {
466 Event::ClientMessage(event) => {
467 let window = self.get_window(event.window)?;
468 let [atom, ..] = event.data.as_data32();
469 let mut state = self.0.borrow_mut();
470
471 if atom == state.atoms.WM_DELETE_WINDOW {
472 // window "x" button clicked by user
473 if window.should_close() {
474 let window_ref = state.windows.remove(&event.window)?;
475 state.loop_handle.remove(window_ref.refresh_event_token);
476 // Rest of the close logic is handled in drop_window()
477 }
478 }
479 }
480 Event::ConfigureNotify(event) => {
481 let bounds = Bounds {
482 origin: Point {
483 x: event.x.into(),
484 y: event.y.into(),
485 },
486 size: Size {
487 width: event.width.into(),
488 height: event.height.into(),
489 },
490 };
491 let window = self.get_window(event.window)?;
492 window.configure(bounds);
493 }
494 Event::Expose(event) => {
495 let window = self.get_window(event.window)?;
496 window.refresh();
497 }
498 Event::FocusIn(event) => {
499 let window = self.get_window(event.event)?;
500 window.set_focused(true);
501 let mut state = self.0.borrow_mut();
502 state.focused_window = Some(event.event);
503 drop(state);
504 self.enable_ime();
505 }
506 Event::FocusOut(event) => {
507 let window = self.get_window(event.event)?;
508 window.set_focused(false);
509 let mut state = self.0.borrow_mut();
510 state.focused_window = None;
511 state.compose_state.reset();
512 state.pre_edit_text.take();
513 drop(state);
514 self.disable_ime();
515 window.handle_ime_delete();
516 }
517 Event::XkbStateNotify(event) => {
518 let mut state = self.0.borrow_mut();
519 state.xkb.update_mask(
520 event.base_mods.into(),
521 event.latched_mods.into(),
522 event.locked_mods.into(),
523 0,
524 0,
525 event.locked_group.into(),
526 );
527 let modifiers = Modifiers::from_xkb(&state.xkb);
528 let focused_window_id = state.focused_window?;
529 state.modifiers = modifiers;
530 drop(state);
531
532 let focused_window = self.get_window(focused_window_id)?;
533 focused_window.handle_input(PlatformInput::ModifiersChanged(
534 ModifiersChangedEvent { modifiers },
535 ));
536 }
537 Event::KeyPress(event) => {
538 let window = self.get_window(event.event)?;
539 let mut state = self.0.borrow_mut();
540
541 let modifiers = modifiers_from_state(event.state);
542 state.modifiers = modifiers;
543
544 let keystroke = {
545 let code = event.detail.into();
546 let mut keystroke = crate::Keystroke::from_xkb(&state.xkb, modifiers, code);
547 state.xkb.update_key(code, xkbc::KeyDirection::Down);
548 let keysym = state.xkb.key_get_one_sym(code);
549 if keysym.is_modifier_key() {
550 return Some(());
551 }
552 state.compose_state.feed(keysym);
553 match state.compose_state.status() {
554 xkbc::Status::Composed => {
555 state.pre_edit_text.take();
556 keystroke.ime_key = state.compose_state.utf8();
557 keystroke.key =
558 xkbc::keysym_get_name(state.compose_state.keysym().unwrap());
559 }
560 xkbc::Status::Composing => {
561 state.pre_edit_text = state
562 .compose_state
563 .utf8()
564 .or(crate::Keystroke::underlying_dead_key(keysym));
565 let pre_edit = state.pre_edit_text.clone().unwrap_or(String::default());
566 drop(state);
567 window.handle_ime_preedit(pre_edit);
568 state = self.0.borrow_mut();
569 }
570 xkbc::Status::Cancelled => {
571 let pre_edit = state.pre_edit_text.take();
572 drop(state);
573 if let Some(pre_edit) = pre_edit {
574 window.handle_ime_commit(pre_edit);
575 }
576 if let Some(current_key) = Keystroke::underlying_dead_key(keysym) {
577 window.handle_ime_preedit(current_key);
578 }
579 state = self.0.borrow_mut();
580 state.compose_state.feed(keysym);
581 }
582 _ => {}
583 }
584 keystroke
585 };
586 drop(state);
587 window.handle_input(PlatformInput::KeyDown(crate::KeyDownEvent {
588 keystroke,
589 is_held: false,
590 }));
591 }
592 Event::KeyRelease(event) => {
593 let window = self.get_window(event.event)?;
594 let mut state = self.0.borrow_mut();
595
596 let modifiers = modifiers_from_state(event.state);
597 state.modifiers = modifiers;
598
599 let keystroke = {
600 let code = event.detail.into();
601 let keystroke = crate::Keystroke::from_xkb(&state.xkb, modifiers, code);
602 state.xkb.update_key(code, xkbc::KeyDirection::Up);
603 let keysym = state.xkb.key_get_one_sym(code);
604 if keysym.is_modifier_key() {
605 return Some(());
606 }
607 keystroke
608 };
609 drop(state);
610 window.handle_input(PlatformInput::KeyUp(crate::KeyUpEvent { keystroke }));
611 }
612 Event::XinputButtonPress(event) => {
613 let window = self.get_window(event.event)?;
614 let mut state = self.0.borrow_mut();
615
616 let modifiers = modifiers_from_xinput_info(event.mods);
617 state.modifiers = modifiers;
618
619 let position = point(
620 px(event.event_x as f32 / u16::MAX as f32 / state.scale_factor),
621 px(event.event_y as f32 / u16::MAX as f32 / state.scale_factor),
622 );
623
624 if state.composing && state.ximc.is_some() {
625 drop(state);
626 self.disable_ime();
627 self.enable_ime();
628 window.handle_ime_unmark();
629 state = self.0.borrow_mut();
630 } else if let Some(text) = state.pre_edit_text.take() {
631 state.compose_state.reset();
632 drop(state);
633 window.handle_ime_commit(text);
634 state = self.0.borrow_mut();
635 }
636 if let Some(button) = button_of_key(event.detail.try_into().unwrap()) {
637 let click_elapsed = state.last_click.elapsed();
638
639 if click_elapsed < DOUBLE_CLICK_INTERVAL
640 && is_within_click_distance(state.last_location, position)
641 {
642 state.current_count += 1;
643 } else {
644 state.current_count = 1;
645 }
646
647 state.last_click = Instant::now();
648 state.last_location = position;
649 let current_count = state.current_count;
650
651 drop(state);
652 window.handle_input(PlatformInput::MouseDown(crate::MouseDownEvent {
653 button,
654 position,
655 modifiers,
656 click_count: current_count,
657 first_mouse: false,
658 }));
659 } else {
660 log::warn!("Unknown button press: {event:?}");
661 }
662 }
663 Event::XinputButtonRelease(event) => {
664 let window = self.get_window(event.event)?;
665 let mut state = self.0.borrow_mut();
666 let modifiers = modifiers_from_xinput_info(event.mods);
667 state.modifiers = modifiers;
668
669 let position = point(
670 px(event.event_x as f32 / u16::MAX as f32 / state.scale_factor),
671 px(event.event_y as f32 / u16::MAX as f32 / state.scale_factor),
672 );
673 if let Some(button) = button_of_key(event.detail.try_into().unwrap()) {
674 let click_count = state.current_count;
675 drop(state);
676 window.handle_input(PlatformInput::MouseUp(crate::MouseUpEvent {
677 button,
678 position,
679 modifiers,
680 click_count,
681 }));
682 }
683 }
684 Event::XinputMotion(event) => {
685 let window = self.get_window(event.event)?;
686 let mut state = self.0.borrow_mut();
687 let pressed_button = pressed_button_from_mask(event.button_mask[0]);
688 let position = point(
689 px(event.event_x as f32 / u16::MAX as f32 / state.scale_factor),
690 px(event.event_y as f32 / u16::MAX as f32 / state.scale_factor),
691 );
692 let modifiers = modifiers_from_xinput_info(event.mods);
693 state.modifiers = modifiers;
694 drop(state);
695
696 let axisvalues = event
697 .axisvalues
698 .iter()
699 .map(|axisvalue| fp3232_to_f32(*axisvalue))
700 .collect::<Vec<_>>();
701
702 if event.valuator_mask[0] & 3 != 0 {
703 window.handle_input(PlatformInput::MouseMove(crate::MouseMoveEvent {
704 position,
705 pressed_button,
706 modifiers,
707 }));
708 }
709
710 let mut valuator_idx = 0;
711 let scroll_class_data = self.0.borrow().scroll_class_data.clone();
712 for shift in 0..32 {
713 if (event.valuator_mask[0] >> shift) & 1 == 0 {
714 continue;
715 }
716
717 for scroll_class in &scroll_class_data {
718 if scroll_class.scroll_type == xinput::ScrollType::HORIZONTAL
719 && scroll_class.number == shift
720 {
721 let new_scroll = axisvalues[valuator_idx]
722 / fp3232_to_f32(scroll_class.increment)
723 * SCROLL_LINES as f32;
724 let old_scroll = self.0.borrow().scroll_x;
725 self.0.borrow_mut().scroll_x = Some(new_scroll);
726
727 if let Some(old_scroll) = old_scroll {
728 let delta_scroll = old_scroll - new_scroll;
729 window.handle_input(PlatformInput::ScrollWheel(
730 crate::ScrollWheelEvent {
731 position,
732 delta: ScrollDelta::Lines(Point::new(delta_scroll, 0.0)),
733 modifiers,
734 touch_phase: TouchPhase::default(),
735 },
736 ));
737 }
738 } else if scroll_class.scroll_type == xinput::ScrollType::VERTICAL
739 && scroll_class.number == shift
740 {
741 // the `increment` is the valuator delta equivalent to one positive unit of scrolling. Here that means SCROLL_LINES lines.
742 let new_scroll = axisvalues[valuator_idx]
743 / fp3232_to_f32(scroll_class.increment)
744 * SCROLL_LINES as f32;
745 let old_scroll = self.0.borrow().scroll_y;
746 self.0.borrow_mut().scroll_y = Some(new_scroll);
747
748 if let Some(old_scroll) = old_scroll {
749 let delta_scroll = old_scroll - new_scroll;
750 window.handle_input(PlatformInput::ScrollWheel(
751 crate::ScrollWheelEvent {
752 position,
753 delta: ScrollDelta::Lines(Point::new(0.0, delta_scroll)),
754 modifiers,
755 touch_phase: TouchPhase::default(),
756 },
757 ));
758 }
759 }
760 }
761
762 valuator_idx += 1;
763 }
764 }
765 Event::XinputLeave(event) if event.mode == xinput::NotifyMode::NORMAL => {
766 self.0.borrow_mut().scroll_x = None; // Set last scroll to `None` so that a large delta isn't created if scrolling is done outside the window (the valuator is global)
767 self.0.borrow_mut().scroll_y = None;
768
769 let window = self.get_window(event.event)?;
770 let mut state = self.0.borrow_mut();
771 let pressed_button = pressed_button_from_mask(event.buttons[0]);
772 let position = point(
773 px(event.event_x as f32 / u16::MAX as f32 / state.scale_factor),
774 px(event.event_y as f32 / u16::MAX as f32 / state.scale_factor),
775 );
776 let modifiers = modifiers_from_xinput_info(event.mods);
777 state.modifiers = modifiers;
778 drop(state);
779
780 window.handle_input(PlatformInput::MouseExited(crate::MouseExitEvent {
781 pressed_button,
782 position,
783 modifiers,
784 }));
785 }
786 _ => {}
787 };
788
789 Some(())
790 }
791
792 fn handle_xim_callback_event(&self, event: XimCallbackEvent) {
793 match event {
794 XimCallbackEvent::XimXEvent(event) => {
795 self.handle_event(event);
796 }
797 XimCallbackEvent::XimCommitEvent(window, text) => {
798 self.xim_handle_commit(window, text);
799 }
800 XimCallbackEvent::XimPreeditEvent(window, text) => {
801 self.xim_handle_preedit(window, text);
802 }
803 };
804 }
805
806 fn xim_handle_event(&self, event: Event) -> Option<()> {
807 match event {
808 Event::KeyPress(event) | Event::KeyRelease(event) => {
809 let mut state = self.0.borrow_mut();
810 let mut ximc = state.ximc.take().unwrap();
811 let mut xim_handler = state.xim_handler.take().unwrap();
812 drop(state);
813 xim_handler.window = event.event;
814 ximc.forward_event(
815 xim_handler.im_id,
816 xim_handler.ic_id,
817 xim::ForwardEventFlag::empty(),
818 &event,
819 )
820 .unwrap();
821 let mut state = self.0.borrow_mut();
822 state.ximc = Some(ximc);
823 state.xim_handler = Some(xim_handler);
824 drop(state);
825 }
826 event => {
827 self.handle_event(event);
828 }
829 }
830 Some(())
831 }
832
833 fn xim_handle_commit(&self, window: xproto::Window, text: String) -> Option<()> {
834 let window = self.get_window(window).unwrap();
835 let mut state = self.0.borrow_mut();
836 state.composing = false;
837 drop(state);
838
839 window.handle_ime_commit(text);
840 Some(())
841 }
842
843 fn xim_handle_preedit(&self, window: xproto::Window, text: String) -> Option<()> {
844 let window = self.get_window(window).unwrap();
845 window.handle_ime_preedit(text);
846
847 let mut state = self.0.borrow_mut();
848 let mut ximc = state.ximc.take().unwrap();
849 let mut xim_handler = state.xim_handler.take().unwrap();
850 state.composing = true;
851 drop(state);
852
853 if let Some(area) = window.get_ime_area() {
854 let ic_attributes = ximc
855 .build_ic_attributes()
856 .push(
857 xim::AttributeName::InputStyle,
858 xim::InputStyle::PREEDIT_CALLBACKS
859 | xim::InputStyle::STATUS_NOTHING
860 | xim::InputStyle::PREEDIT_POSITION,
861 )
862 .push(xim::AttributeName::ClientWindow, xim_handler.window)
863 .push(xim::AttributeName::FocusWindow, xim_handler.window)
864 .nested_list(xim::AttributeName::PreeditAttributes, |b| {
865 b.push(
866 xim::AttributeName::SpotLocation,
867 xim::Point {
868 x: u32::from(area.origin.x + area.size.width) as i16,
869 y: u32::from(area.origin.y + area.size.height) as i16,
870 },
871 );
872 })
873 .build();
874 ximc.set_ic_values(xim_handler.im_id, xim_handler.ic_id, ic_attributes)
875 .ok();
876 }
877 let mut state = self.0.borrow_mut();
878 state.ximc = Some(ximc);
879 state.xim_handler = Some(xim_handler);
880 drop(state);
881 Some(())
882 }
883}
884
885impl LinuxClient for X11Client {
886 fn with_common<R>(&self, f: impl FnOnce(&mut LinuxCommon) -> R) -> R {
887 f(&mut self.0.borrow_mut().common)
888 }
889
890 fn displays(&self) -> Vec<Rc<dyn PlatformDisplay>> {
891 let state = self.0.borrow();
892 let setup = state.xcb_connection.setup();
893 setup
894 .roots
895 .iter()
896 .enumerate()
897 .filter_map(|(root_id, _)| {
898 Some(Rc::new(X11Display::new(&state.xcb_connection, root_id)?)
899 as Rc<dyn PlatformDisplay>)
900 })
901 .collect()
902 }
903
904 fn primary_display(&self) -> Option<Rc<dyn PlatformDisplay>> {
905 let state = self.0.borrow();
906
907 Some(Rc::new(
908 X11Display::new(&state.xcb_connection, state.x_root_index)
909 .expect("There should always be a root index"),
910 ))
911 }
912
913 fn display(&self, id: DisplayId) -> Option<Rc<dyn PlatformDisplay>> {
914 let state = self.0.borrow();
915
916 Some(Rc::new(X11Display::new(
917 &state.xcb_connection,
918 id.0 as usize,
919 )?))
920 }
921
922 fn open_window(
923 &self,
924 handle: AnyWindowHandle,
925 params: WindowParams,
926 ) -> Box<dyn PlatformWindow> {
927 let mut state = self.0.borrow_mut();
928 let x_window = state.xcb_connection.generate_id().unwrap();
929
930 let window = X11Window::new(
931 handle,
932 X11ClientStatePtr(Rc::downgrade(&self.0)),
933 state.common.foreground_executor.clone(),
934 params,
935 &state.xcb_connection,
936 state.x_root_index,
937 x_window,
938 &state.atoms,
939 state.scale_factor,
940 state.common.appearance,
941 );
942
943 let screen_resources = state
944 .xcb_connection
945 .randr_get_screen_resources(x_window)
946 .unwrap()
947 .reply()
948 .expect("Could not find available screens");
949
950 let mode = screen_resources
951 .crtcs
952 .iter()
953 .find_map(|crtc| {
954 let crtc_info = state
955 .xcb_connection
956 .randr_get_crtc_info(*crtc, x11rb::CURRENT_TIME)
957 .ok()?
958 .reply()
959 .ok()?;
960
961 screen_resources
962 .modes
963 .iter()
964 .find(|m| m.id == crtc_info.mode)
965 })
966 .expect("Unable to find screen refresh rate");
967
968 let refresh_event_token = state
969 .loop_handle
970 .insert_source(calloop::timer::Timer::immediate(), {
971 let refresh_duration = mode_refresh_rate(mode);
972 move |mut instant, (), client| {
973 let state = client.0.borrow_mut();
974 state
975 .xcb_connection
976 .send_event(
977 false,
978 x_window,
979 xproto::EventMask::EXPOSURE,
980 xproto::ExposeEvent {
981 response_type: xproto::EXPOSE_EVENT,
982 sequence: 0,
983 window: x_window,
984 x: 0,
985 y: 0,
986 width: 0,
987 height: 0,
988 count: 1,
989 },
990 )
991 .unwrap();
992 let _ = state.xcb_connection.flush().unwrap();
993 // Take into account that some frames have been skipped
994 let now = Instant::now();
995 while instant < now {
996 instant += refresh_duration;
997 }
998 calloop::timer::TimeoutAction::ToInstant(instant)
999 }
1000 })
1001 .expect("Failed to initialize refresh timer");
1002
1003 let window_ref = WindowRef {
1004 window: window.0.clone(),
1005 refresh_event_token,
1006 };
1007
1008 state.windows.insert(x_window, window_ref);
1009 Box::new(window)
1010 }
1011
1012 fn set_cursor_style(&self, style: CursorStyle) {
1013 let mut state = self.0.borrow_mut();
1014 let Some(focused_window) = state.focused_window else {
1015 return;
1016 };
1017 let current_style = state
1018 .cursor_styles
1019 .get(&focused_window)
1020 .unwrap_or(&CursorStyle::Arrow);
1021 if *current_style == style {
1022 return;
1023 }
1024
1025 let cursor = match state.cursor_cache.get(&style) {
1026 Some(cursor) => *cursor,
1027 None => {
1028 let cursor = state
1029 .cursor_handle
1030 .load_cursor(&state.xcb_connection, &style.to_icon_name())
1031 .expect("failed to load cursor");
1032 state.cursor_cache.insert(style, cursor);
1033 cursor
1034 }
1035 };
1036
1037 state.cursor_styles.insert(focused_window, style);
1038 state
1039 .xcb_connection
1040 .change_window_attributes(
1041 focused_window,
1042 &ChangeWindowAttributesAux {
1043 cursor: Some(cursor),
1044 ..Default::default()
1045 },
1046 )
1047 .expect("failed to change window cursor");
1048 }
1049
1050 fn open_uri(&self, uri: &str) {
1051 open_uri_internal(uri, None);
1052 }
1053
1054 fn write_to_primary(&self, item: crate::ClipboardItem) {
1055 self.0.borrow_mut().primary.set_contents(item.text).ok();
1056 }
1057
1058 fn write_to_clipboard(&self, item: crate::ClipboardItem) {
1059 self.0.borrow_mut().clipboard.set_contents(item.text).ok();
1060 }
1061
1062 fn read_from_primary(&self) -> Option<crate::ClipboardItem> {
1063 self.0
1064 .borrow_mut()
1065 .primary
1066 .get_contents()
1067 .ok()
1068 .map(|text| crate::ClipboardItem {
1069 text,
1070 metadata: None,
1071 })
1072 }
1073
1074 fn read_from_clipboard(&self) -> Option<crate::ClipboardItem> {
1075 self.0
1076 .borrow_mut()
1077 .clipboard
1078 .get_contents()
1079 .ok()
1080 .map(|text| crate::ClipboardItem {
1081 text,
1082 metadata: None,
1083 })
1084 }
1085
1086 fn run(&self) {
1087 let mut event_loop = self
1088 .0
1089 .borrow_mut()
1090 .event_loop
1091 .take()
1092 .expect("App is already running");
1093
1094 event_loop.run(None, &mut self.clone(), |_| {}).log_err();
1095 }
1096
1097 fn active_window(&self) -> Option<AnyWindowHandle> {
1098 let state = self.0.borrow();
1099 state.focused_window.and_then(|focused_window| {
1100 state
1101 .windows
1102 .get(&focused_window)
1103 .map(|window| window.handle())
1104 })
1105 }
1106}
1107
1108// Adatpted from:
1109// https://docs.rs/winit/0.29.11/src/winit/platform_impl/linux/x11/monitor.rs.html#103-111
1110pub fn mode_refresh_rate(mode: &randr::ModeInfo) -> Duration {
1111 let millihertz = mode.dot_clock as u64 * 1_000 / (mode.htotal as u64 * mode.vtotal as u64);
1112 let micros = 1_000_000_000 / millihertz;
1113 log::info!("Refreshing at {} micros", micros);
1114 Duration::from_micros(micros)
1115}
1116
1117fn fp3232_to_f32(value: xinput::Fp3232) -> f32 {
1118 value.integral as f32 + value.frac as f32 / u32::MAX as f32
1119}