1#![allow(unused)]
2
3use crate::{
4 Action, AnyWindowHandle, BackgroundExecutor, Bounds, ClipboardItem, CursorStyle, DisplayId,
5 ForegroundExecutor, Keymap, LinuxDispatcher, LinuxDisplay, LinuxTextSystem, LinuxWindow,
6 LinuxWindowState, Menu, PathPromptOptions, Platform, PlatformDisplay, PlatformInput,
7 PlatformTextSystem, PlatformWindow, Point, Result, SemanticVersion, Size, Task, WindowOptions,
8};
9
10use async_task::Runnable;
11use collections::{HashMap, HashSet};
12use futures::channel::oneshot;
13use parking_lot::Mutex;
14
15use std::{
16 path::{Path, PathBuf},
17 rc::Rc,
18 sync::Arc,
19 time::Duration,
20};
21use time::UtcOffset;
22use xcb::{x, Xid as _};
23
24xcb::atoms_struct! {
25 #[derive(Debug)]
26 pub(crate) struct XcbAtoms {
27 pub wm_protocols => b"WM_PROTOCOLS",
28 pub wm_del_window => b"WM_DELETE_WINDOW",
29 wm_state => b"_NET_WM_STATE",
30 wm_state_maxv => b"_NET_WM_STATE_MAXIMIZED_VERT",
31 wm_state_maxh => b"_NET_WM_STATE_MAXIMIZED_HORZ",
32 }
33}
34
35#[derive(Default)]
36struct Callbacks {
37 open_urls: Option<Box<dyn FnMut(Vec<String>)>>,
38 become_active: Option<Box<dyn FnMut()>>,
39 resign_active: Option<Box<dyn FnMut()>>,
40 quit: Option<Box<dyn FnMut()>>,
41 reopen: Option<Box<dyn FnMut()>>,
42 event: Option<Box<dyn FnMut(PlatformInput) -> bool>>,
43 app_menu_action: Option<Box<dyn FnMut(&dyn Action)>>,
44 will_open_app_menu: Option<Box<dyn FnMut()>>,
45 validate_app_menu_command: Option<Box<dyn FnMut(&dyn Action) -> bool>>,
46}
47
48pub(crate) struct LinuxPlatform {
49 xcb_connection: Arc<xcb::Connection>,
50 x_root_index: i32,
51 atoms: XcbAtoms,
52 background_executor: BackgroundExecutor,
53 foreground_executor: ForegroundExecutor,
54 main_receiver: flume::Receiver<Runnable>,
55 text_system: Arc<LinuxTextSystem>,
56 callbacks: Mutex<Callbacks>,
57 state: Mutex<LinuxPlatformState>,
58}
59
60pub(crate) struct LinuxPlatformState {
61 quit_requested: bool,
62 windows: HashMap<x::Window, Arc<LinuxWindowState>>,
63}
64
65impl Default for LinuxPlatform {
66 fn default() -> Self {
67 Self::new()
68 }
69}
70
71impl LinuxPlatform {
72 pub(crate) fn new() -> Self {
73 let (xcb_connection, x_root_index) = xcb::Connection::connect(None).unwrap();
74 let atoms = XcbAtoms::intern_all(&xcb_connection).unwrap();
75
76 let xcb_connection = Arc::new(xcb_connection);
77 let (main_sender, main_receiver) = flume::unbounded::<Runnable>();
78 let dispatcher = Arc::new(LinuxDispatcher::new(
79 main_sender,
80 &xcb_connection,
81 x_root_index,
82 ));
83
84 Self {
85 xcb_connection,
86 x_root_index,
87 atoms,
88 background_executor: BackgroundExecutor::new(dispatcher.clone()),
89 foreground_executor: ForegroundExecutor::new(dispatcher.clone()),
90 main_receiver,
91 text_system: Arc::new(LinuxTextSystem::new()),
92 callbacks: Mutex::new(Callbacks::default()),
93 state: Mutex::new(LinuxPlatformState {
94 quit_requested: false,
95 windows: HashMap::default(),
96 }),
97 }
98 }
99}
100
101impl Platform for LinuxPlatform {
102 fn background_executor(&self) -> BackgroundExecutor {
103 self.background_executor.clone()
104 }
105
106 fn foreground_executor(&self) -> ForegroundExecutor {
107 self.foreground_executor.clone()
108 }
109
110 fn text_system(&self) -> Arc<dyn PlatformTextSystem> {
111 self.text_system.clone()
112 }
113
114 fn run(&self, on_finish_launching: Box<dyn FnOnce()>) {
115 on_finish_launching();
116 //Note: here and below, don't keep the lock() open when calling
117 // into window functions as they may invoke callbacks that need
118 // to immediately access the platform (self).
119 while !self.state.lock().quit_requested {
120 let event = self.xcb_connection.wait_for_event().unwrap();
121 match event {
122 xcb::Event::X(x::Event::ClientMessage(ev)) => {
123 if let x::ClientMessageData::Data32([atom, ..]) = ev.data() {
124 if atom == self.atoms.wm_del_window.resource_id() {
125 // window "x" button clicked by user, we gracefully exit
126 let window = self.state.lock().windows.remove(&ev.window()).unwrap();
127 window.destroy();
128 if self.state.lock().windows.is_empty() {
129 if let Some(ref mut fun) = self.callbacks.lock().quit {
130 fun();
131 }
132 }
133 }
134 }
135 }
136 xcb::Event::X(x::Event::Expose(ev)) => {
137 let window = {
138 let state = self.state.lock();
139 Arc::clone(&state.windows[&ev.window()])
140 };
141 window.expose();
142 }
143 xcb::Event::X(x::Event::ConfigureNotify(ev)) => {
144 let bounds = Bounds {
145 origin: Point {
146 x: ev.x().into(),
147 y: ev.y().into(),
148 },
149 size: Size {
150 width: ev.width().into(),
151 height: ev.height().into(),
152 },
153 };
154 let window = {
155 let state = self.state.lock();
156 Arc::clone(&state.windows[&ev.window()])
157 };
158 window.configure(bounds)
159 }
160 _ => {}
161 }
162
163 if let Ok(runnable) = self.main_receiver.try_recv() {
164 runnable.run();
165 }
166 }
167 }
168
169 fn quit(&self) {
170 self.state.lock().quit_requested = true;
171 }
172
173 fn restart(&self) {}
174
175 fn activate(&self, ignoring_other_apps: bool) {}
176
177 fn hide(&self) {}
178
179 fn hide_other_apps(&self) {}
180
181 fn unhide_other_apps(&self) {}
182
183 fn displays(&self) -> Vec<Rc<dyn PlatformDisplay>> {
184 let setup = self.xcb_connection.get_setup();
185 setup
186 .roots()
187 .enumerate()
188 .map(|(root_id, _)| {
189 Rc::new(LinuxDisplay::new(&self.xcb_connection, root_id as i32))
190 as Rc<dyn PlatformDisplay>
191 })
192 .collect()
193 }
194
195 fn display(&self, id: DisplayId) -> Option<Rc<dyn PlatformDisplay>> {
196 Some(Rc::new(LinuxDisplay::new(
197 &self.xcb_connection,
198 id.0 as i32,
199 )))
200 }
201
202 fn active_window(&self) -> Option<AnyWindowHandle> {
203 None
204 }
205
206 fn open_window(
207 &self,
208 handle: AnyWindowHandle,
209 options: WindowOptions,
210 ) -> Box<dyn PlatformWindow> {
211 let x_window = self.xcb_connection.generate_id();
212
213 let window_ptr = Arc::new(LinuxWindowState::new(
214 options,
215 &self.xcb_connection,
216 self.x_root_index,
217 x_window,
218 &self.atoms,
219 ));
220
221 self.state
222 .lock()
223 .windows
224 .insert(x_window, Arc::clone(&window_ptr));
225 Box::new(LinuxWindow(window_ptr))
226 }
227
228 fn set_display_link_output_callback(
229 &self,
230 display_id: DisplayId,
231 callback: Box<dyn FnMut() + Send>,
232 ) {
233 log::warn!("unimplemented: set_display_link_output_callback");
234 }
235
236 fn start_display_link(&self, display_id: DisplayId) {
237 unimplemented!()
238 }
239
240 fn stop_display_link(&self, display_id: DisplayId) {
241 unimplemented!()
242 }
243
244 fn open_url(&self, url: &str) {
245 unimplemented!()
246 }
247
248 fn on_open_urls(&self, callback: Box<dyn FnMut(Vec<String>)>) {
249 self.callbacks.lock().open_urls = Some(callback);
250 }
251
252 fn prompt_for_paths(
253 &self,
254 options: PathPromptOptions,
255 ) -> oneshot::Receiver<Option<Vec<PathBuf>>> {
256 unimplemented!()
257 }
258
259 fn prompt_for_new_path(&self, directory: &Path) -> oneshot::Receiver<Option<PathBuf>> {
260 unimplemented!()
261 }
262
263 fn reveal_path(&self, path: &Path) {
264 unimplemented!()
265 }
266
267 fn on_become_active(&self, callback: Box<dyn FnMut()>) {
268 self.callbacks.lock().become_active = Some(callback);
269 }
270
271 fn on_resign_active(&self, callback: Box<dyn FnMut()>) {
272 self.callbacks.lock().resign_active = Some(callback);
273 }
274
275 fn on_quit(&self, callback: Box<dyn FnMut()>) {
276 self.callbacks.lock().quit = Some(callback);
277 }
278
279 fn on_reopen(&self, callback: Box<dyn FnMut()>) {
280 self.callbacks.lock().reopen = Some(callback);
281 }
282
283 fn on_event(&self, callback: Box<dyn FnMut(PlatformInput) -> bool>) {
284 self.callbacks.lock().event = Some(callback);
285 }
286
287 fn on_app_menu_action(&self, callback: Box<dyn FnMut(&dyn Action)>) {
288 self.callbacks.lock().app_menu_action = Some(callback);
289 }
290
291 fn on_will_open_app_menu(&self, callback: Box<dyn FnMut()>) {
292 self.callbacks.lock().will_open_app_menu = Some(callback);
293 }
294
295 fn on_validate_app_menu_command(&self, callback: Box<dyn FnMut(&dyn Action) -> bool>) {
296 self.callbacks.lock().validate_app_menu_command = Some(callback);
297 }
298
299 fn os_name(&self) -> &'static str {
300 "Linux"
301 }
302
303 fn double_click_interval(&self) -> Duration {
304 Duration::default()
305 }
306
307 fn os_version(&self) -> Result<SemanticVersion> {
308 Ok(SemanticVersion {
309 major: 1,
310 minor: 0,
311 patch: 0,
312 })
313 }
314
315 fn app_version(&self) -> Result<SemanticVersion> {
316 Ok(SemanticVersion {
317 major: 1,
318 minor: 0,
319 patch: 0,
320 })
321 }
322
323 fn app_path(&self) -> Result<PathBuf> {
324 unimplemented!()
325 }
326
327 fn set_menus(&self, menus: Vec<Menu>, keymap: &Keymap) {}
328
329 fn local_timezone(&self) -> UtcOffset {
330 UtcOffset::UTC
331 }
332
333 fn path_for_auxiliary_executable(&self, name: &str) -> Result<PathBuf> {
334 unimplemented!()
335 }
336
337 fn set_cursor_style(&self, style: CursorStyle) {}
338
339 fn should_auto_hide_scrollbars(&self) -> bool {
340 false
341 }
342
343 fn write_to_clipboard(&self, item: ClipboardItem) {}
344
345 fn read_from_clipboard(&self) -> Option<ClipboardItem> {
346 None
347 }
348
349 fn write_credentials(&self, url: &str, username: &str, password: &[u8]) -> Task<Result<()>> {
350 unimplemented!()
351 }
352
353 fn read_credentials(&self, url: &str) -> Task<Result<Option<(String, Vec<u8>)>>> {
354 unimplemented!()
355 }
356
357 fn delete_credentials(&self, url: &str) -> Task<Result<()>> {
358 unimplemented!()
359 }
360}
361
362#[cfg(test)]
363mod tests {
364 use crate::ClipboardItem;
365
366 use super::*;
367
368 fn build_platform() -> LinuxPlatform {
369 let platform = LinuxPlatform::new();
370 platform
371 }
372}