StratoSDK is a framework with a declarative approach similar to Flutter/React, written and designed entirely for Rust.
| 1 | mod key_events; |
| 2 | |
| 3 | #[cfg(test)] |
| 4 | mod drag_drop_tests; |
| 5 | |
| 6 | use std::collections::HashMap; |
| 7 | use std::mem::ManuallyDrop; |
| 8 | |
| 9 | #[cfg(target_os = "linux")] |
| 10 | use crate::notification::RequestPermissionsOutcome; |
| 11 | |
| 12 | use futures_util::future::LocalBoxFuture; |
| 13 | use futures_util::stream::AbortHandle; |
| 14 | use instant::{Duration, Instant}; |
| 15 | use pathfinder_geometry::rect::RectF; |
| 16 | use pathfinder_geometry::vector::{vec2f, Vector2F}; |
| 17 | use winit::dpi::{LogicalPosition, LogicalSize, PhysicalPosition}; |
| 18 | use winit::event::Ime as ImeEvent; |
| 19 | use winit::event_loop::EventLoopProxy; |
| 20 | use winit::keyboard::{self, KeyCode}; |
| 21 | use winit::window::WindowId as WinitWindowId; |
| 22 | use winit::{ |
| 23 | event::{ElementState, Event, MouseButton, StartCause, Touch, TouchPhase, WindowEvent}, |
| 24 | event_loop::{ActiveEventLoop, ControlFlow}, |
| 25 | }; |
| 26 | |
| 27 | use crate::actions::StandardAction; |
| 28 | use crate::event::ModifiersState; |
| 29 | use crate::platform::NotificationInfo; |
| 30 | use crate::platform::OperatingSystem; |
| 31 | use crate::platform::{ |
| 32 | self, |
| 33 | app::{AppCallbackDispatcher, ApproveTerminateResult}, |
| 34 | TerminationMode, WindowContext, |
| 35 | }; |
| 36 | use crate::r#async::Timer; |
| 37 | use crate::rendering::wgpu::renderer; |
| 38 | use crate::windowing::winit::app::RequestPermissionsCallback; |
| 39 | use crate::windowing::winit::window::MIN_WINDOW_SIZE; |
| 40 | use crate::Event::{ClearMarkedText, SetMarkedText, TypedCharacters}; |
| 41 | use crate::{AppContext, WindowId}; |
| 42 | |
| 43 | #[cfg(target_family = "wasm")] |
| 44 | use wasm_bindgen::JsCast; |
| 45 | |
| 46 | use super::app::ClipboardEvent; |
| 47 | use super::window::DEFAULT_TITLEBAR_HEIGHT; |
| 48 | use super::CustomEvent; |
| 49 | |
| 50 | #[cfg(windows)] |
| 51 | use super::windows::{add_network_connection_listener, WindowsNetworkConnectionPoint}; |
| 52 | |
| 53 | use self::key_events::convert_keyboard_input_event; |
| 54 | |
| 55 | /// This is the time duration beyond which clicks get treated as separate single clicks instead of |
| 56 | /// double-click, triple-click, etc. |
| 57 | const MULTI_CLICK_INTERVAL: Duration = Duration::from_millis(400); |
| 58 | |
| 59 | /// The debounce timeout for drag-and-drop files. Multiple DroppedFile events |
| 60 | /// are received within this time window and then combined into a single DragAndDropFiles event. |
| 61 | /// This timeout ensures all files in a multi-file drag operation are batched together efficiently. |
| 62 | const DRAG_DROP_DEBOUNCE_TIMEOUT: Duration = Duration::from_millis(50); |
| 63 | |
| 64 | /// Distance (in logical pixels) before a touch input is considered a drag. Flutter uses 18. |
| 65 | const MAX_TAP_DISTANCE: f64 = 18.; |
| 66 | |
| 67 | /// Duration to hold before a touch becomes a right-click (context menu). |
| 68 | /// Matches the iOS and Android platform default of 500ms. |
| 69 | const LONG_PRESS_DURATION: Duration = Duration::from_millis(500); |
| 70 | |
| 71 | /// Momentum scrolling configuration. Math is as follows: |
| 72 | /// Each tick (every MOMENTUM_FRAME_INTERVAL): |
| 73 | /// |
| 74 | /// 1. Decay velocity: v = v * MOMENTUM_DECAY^(elapsed / MOMENTUM_DECAY_INTERVAL) |
| 75 | /// 2. Check stop condition: if |v| < MOMENTUM_MIN_VELOCITY, cancel the animation. |
| 76 | /// 3. Compute scroll delta: delta = v * elapsed |
| 77 | /// |
| 78 | /// Decay is between iOS normal (0.984/8ms) and fast (0.923/8ms). |
| 79 | const MOMENTUM_DECAY: f32 = 0.968; // Every interval, velocity is multiplied by this factor. |
| 80 | const MOMENTUM_DECAY_INTERVAL: f32 = 0.008; // Time period (seconds) over which MOMENTUM_DECAY is applied |
| 81 | const MOMENTUM_FRAME_INTERVAL: Duration = Duration::from_millis(8); //Controls how often the momentum scroll tick fires. |
| 82 | // Higher values means it fires less often (choppier) |
| 83 | const MOMENTUM_THRESHOLD: f32 = 50.0; // Min-velocity to start momentum scroll, Android standards |
| 84 | const MOMENTUM_MIN_VELOCITY: f32 = 1.0; // When velocity falls below this, scrolling stops. 1.0 is subpixel |
| 85 | const MOMENTUM_MAX_VELOCITY: f32 = 2000.0; // Hard cap on momentum initial velocity (px/s) |
| 86 | const MIN_VELOCITY_TIME_DELTA: f32 = 0.004; // Floor for time deltas to prevent spikes from batched events |
| 87 | |
| 88 | /// TryFrom implementation for converting winit's `KeyCode` to |
| 89 | /// `crate::platform::keyboard::KeyCode`. |
| 90 | /// Only converts modifier keys and fails for all other keys. |
| 91 | fn try_from_winit_keycode(keycode: &KeyCode) -> Result<crate::platform::keyboard::KeyCode, ()> { |
| 92 | match keycode { |
| 93 | KeyCode::AltLeft => Ok(crate::platform::keyboard::KeyCode::AltLeft), |
| 94 | KeyCode::AltRight => Ok(crate::platform::keyboard::KeyCode::AltRight), |
| 95 | KeyCode::ShiftLeft => Ok(crate::platform::keyboard::KeyCode::ShiftLeft), |
| 96 | KeyCode::ShiftRight => Ok(crate::platform::keyboard::KeyCode::ShiftRight), |
| 97 | KeyCode::ControlLeft => Ok(crate::platform::keyboard::KeyCode::ControlLeft), |
| 98 | KeyCode::ControlRight => Ok(crate::platform::keyboard::KeyCode::ControlRight), |
| 99 | KeyCode::SuperLeft => Ok(crate::platform::keyboard::KeyCode::SuperLeft), |
| 100 | KeyCode::SuperRight => Ok(crate::platform::keyboard::KeyCode::SuperRight), |
| 101 | // Note that the Fn key is not well identified on Windows laptops (e.g. |
| 102 | // winit wasn't able to identify it correctly on ThinkPad). But, if it's |
| 103 | // identified, we still pass it on to the UI framework. |
| 104 | KeyCode::Fn => Ok(crate::platform::keyboard::KeyCode::Fn), |
| 105 | _ => Err(()), |
| 106 | } |
| 107 | } |
| 108 | |
| 109 | /// Data needed to detect double/triple-click. |
| 110 | struct MouseButtonPressState { |
| 111 | pressed_at: Instant, |
| 112 | button_pressed: MouseButton, |
| 113 | click_count: u32, |
| 114 | } |
| 115 | |
| 116 | #[derive(Debug)] |
| 117 | /// Purpose of the touch event. |
| 118 | enum TouchPurpose { |
| 119 | Select, |
| 120 | Scroll(Touch), |
| 121 | /// A tap that hasn't yet been classified. |
| 122 | /// Stores (initial touch, click count, start time for long-press detection). |
| 123 | Tap(Touch, u32, Instant), |
| 124 | /// Dragging the window via touch in the titlebar region. |
| 125 | /// Stores the starting touch position (window-relative). |
| 126 | WindowDrag { |
| 127 | start_touch: PhysicalPosition<f64>, |
| 128 | }, |
| 129 | } |
| 130 | |
| 131 | /// Tracks scroll velocity during active touch scrolling and momentum scrolling. |
| 132 | #[derive(Debug, Clone, Copy)] |
| 133 | struct ScrollVelocity { |
| 134 | velocity: Vector2F, |
| 135 | last_update: Instant, |
| 136 | } |
| 137 | |
| 138 | /// The set of state we need to track per-window across frames. |
| 139 | struct WindowState { |
| 140 | /// The UI framework's identifier for the window in question (not to be |
| 141 | /// confused with winit's identifer for the window). |
| 142 | window_id: crate::WindowId, |
| 143 | /// The last known modifier key (ctr/alt/etc) state. |
| 144 | modifiers: keyboard::ModifiersState, |
| 145 | /// Whether the left Alt key is currently pressed. `ModifiersState` does not distinguish |
| 146 | /// between left and right Alt, so we track per-side state by watching `KeyboardInput` |
| 147 | /// events for `KeyCode::AltLeft`/`KeyCode::AltRight`. Used by the extra-meta-keys setting |
| 148 | /// to apply the left/right-alt-as-meta preferences correctly. |
| 149 | left_alt_pressed: bool, |
| 150 | /// Whether the right Alt key is currently pressed. See [`Self::left_alt_pressed`]. |
| 151 | right_alt_pressed: bool, |
| 152 | /// The currently-pressed mouse button, if any. Set back to None when the button is released. |
| 153 | /// |
| 154 | /// This ultimately should be a HashSet of mouse buttons, as more than one |
| 155 | /// can be held down at a time. |
| 156 | current_mouse_button_pressed: Option<MouseButton>, |
| 157 | /// The last mouse button pressed. This persists after the button is released because it needs |
| 158 | /// to keep that state to detect double/triple-click. |
| 159 | last_mouse_button_pressed: Option<MouseButtonPressState>, |
| 160 | /// The last known cursor position, measured in logical pixels. |
| 161 | last_cursor_position: winit::dpi::LogicalPosition<f32>, |
| 162 | /// Drag-and-drop files are received as separate DroppedFile events per file. |
| 163 | /// We collect them and debounce them to create a single consistent DragAndDropFiles event. |
| 164 | pending_drag_drop_files: Vec<String>, |
| 165 | /// Track if we have a debounce timer already running for this window. |
| 166 | has_pending_drag_drop_timer: bool, |
| 167 | /// The purpose of the last touch event. |
| 168 | last_touch_purpose: Option<TouchPurpose>, |
| 169 | /// Tracks scroll velocity during active touch scrolling and momentum scrolling. |
| 170 | /// Active phase determined through `momentum_scroll_abort.is_some()`. |
| 171 | scroll_velocity: Option<ScrollVelocity>, |
| 172 | /// Abort handle for momentum scrolling timer. Present only during the momentum phase. |
| 173 | momentum_scroll_abort: Option<AbortHandle>, |
| 174 | /// For touch events, stores whether soft keyboard was requested during LeftMouseDown. |
| 175 | /// This is needed because touch keyboard updates are deferred to LeftMouseUp, but the |
| 176 | /// UI element only requests the keyboard during LeftMouseDown. |
| 177 | #[cfg(target_family = "wasm")] |
| 178 | pending_soft_keyboard_request: bool, |
| 179 | } |
| 180 | |
| 181 | impl WindowState { |
| 182 | fn new(window_id: crate::WindowId) -> Self { |
| 183 | Self { |
| 184 | window_id, |
| 185 | modifiers: Default::default(), |
| 186 | left_alt_pressed: false, |
| 187 | right_alt_pressed: false, |
| 188 | current_mouse_button_pressed: None, |
| 189 | last_mouse_button_pressed: None, |
| 190 | last_cursor_position: Default::default(), |
| 191 | pending_drag_drop_files: Vec::new(), |
| 192 | has_pending_drag_drop_timer: false, |
| 193 | last_touch_purpose: None, |
| 194 | scroll_velocity: None, |
| 195 | momentum_scroll_abort: None, |
| 196 | #[cfg(target_family = "wasm")] |
| 197 | pending_soft_keyboard_request: false, |
| 198 | } |
| 199 | } |
| 200 | |
| 201 | /// Cancels ongoing momentum scroll, clearing both the animation timer and velocity state. |
| 202 | fn cancel_momentum_scroll(&mut self) { |
| 203 | if let Some(abort_handle) = self.momentum_scroll_abort.take() { |
| 204 | abort_handle.abort(); |
| 205 | } |
| 206 | self.scroll_velocity = None; |
| 207 | } |
| 208 | |
| 209 | /// When a mouse button is pressed, save it to [`Self::current_mouse_button_pressed`] so that |
| 210 | /// we can detect dragging. Also save it to [`Self::last_mouse_button_pressed`] for |
| 211 | /// double/triple-click. Returns the calculated click_count. |
| 212 | fn determine_click_count_and_update_button_state(&mut self, button: MouseButton) -> u32 { |
| 213 | self.current_mouse_button_pressed = Some(button); |
| 214 | let now = Instant::now(); |
| 215 | // Increment the click_count if the button type is the same and the duration is faster than |
| 216 | // MULTI_CLICK_INTERVAL. |
| 217 | let click_count = self |
| 218 | .last_mouse_button_pressed |
| 219 | .take() |
| 220 | .filter(|old_state| { |
| 221 | old_state.button_pressed == button |
| 222 | && now.duration_since(old_state.pressed_at) <= MULTI_CLICK_INTERVAL |
| 223 | }) |
| 224 | .map(|old_state| old_state.click_count + 1) |
| 225 | .unwrap_or(1); |
| 226 | let new_state = MouseButtonPressState { |
| 227 | pressed_at: now, |
| 228 | button_pressed: button, |
| 229 | click_count, |
| 230 | }; |
| 231 | self.last_mouse_button_pressed = Some(new_state); |
| 232 | click_count |
| 233 | } |
| 234 | } |
| 235 | |
| 236 | /// An extension trait to add helpful methods to [`winit::dpi::LogicalPosition`]. |
| 237 | trait LogicalPositionExt { |
| 238 | /// Converts the [`LogicalPosition`] into a [`Vector2F`]. |
| 239 | fn to_vec2f(&self) -> Vector2F; |
| 240 | } |
| 241 | |
| 242 | impl LogicalPositionExt for winit::dpi::LogicalPosition<f32> { |
| 243 | fn to_vec2f(&self) -> Vector2F { |
| 244 | Vector2F::new(self.x, self.y) |
| 245 | } |
| 246 | } |
| 247 | |
| 248 | /// The state that we need to track across frames in order to properly convert |
| 249 | /// winit events into strato_ui events. |
| 250 | #[derive(Default)] |
| 251 | struct State { |
| 252 | windows: HashMap<winit::window::WindowId, WindowState>, |
| 253 | pending_active_window_change: Option<ActiveWindowChange>, |
| 254 | |
| 255 | #[cfg(windows)] |
| 256 | network_connection_listener: Option<WindowsNetworkConnectionPoint>, |
| 257 | } |
| 258 | |
| 259 | /// This enum holds the state needed to convert multiple emitted |
| 260 | /// [`winit::event::WindowEvent::Focused`] events into a single |
| 261 | /// [`CustomEvent::ActiveWindowChanged`]. |
| 262 | #[derive(Copy, Clone, Debug)] |
| 263 | enum ActiveWindowChange { |
| 264 | /// When we see `WindowEvent::Focused(false)` from winit, we store this variant. |
| 265 | FocusOut, |
| 266 | /// When we see `WindowEvent::Focused(true)` from winit, we store this variant and save the ID |
| 267 | /// of the newly focused window. |
| 268 | FocusIn(winit::window::WindowId), |
| 269 | } |
| 270 | |
| 271 | fn from_winit_modifiers_state(state: keyboard::ModifiersState) -> ModifiersState { |
| 272 | ModifiersState { |
| 273 | alt: state.alt_key(), |
| 274 | cmd: state.super_key(), |
| 275 | shift: state.shift_key(), |
| 276 | ctrl: state.control_key(), |
| 277 | // TODO(advait): Implement the function key for winit. |
| 278 | // Note there is no function_key() function to use here. |
| 279 | func: false, |
| 280 | } |
| 281 | } |
| 282 | |
| 283 | /// Handles the `TouchPhase::Started` phase of a touch event. |
| 284 | /// |
| 285 | /// Emits a `LeftMouseDown` event to begin a potential tap, selection, scroll, or window drag. |
| 286 | fn convert_touch_started( |
| 287 | touch: Touch, |
| 288 | window_state: &mut WindowState, |
| 289 | scale_factor: f32, |
| 290 | ) -> Option<ConvertedEvent> { |
| 291 | if window_state.last_touch_purpose.is_some() { |
| 292 | return None; |
| 293 | } |
| 294 | |
| 295 | // Cancel any ongoing momentum scroll when user touches screen (iOS behavior). |
| 296 | window_state.cancel_momentum_scroll(); |
| 297 | |
| 298 | window_state.last_cursor_position = touch.location.to_logical(scale_factor as f64); |
| 299 | let click_count = window_state.determine_click_count_and_update_button_state(MouseButton::Left); |
| 300 | window_state.current_mouse_button_pressed = None; |
| 301 | |
| 302 | // Store click_count and start time for double-tap and long-press detection. |
| 303 | window_state.last_touch_purpose = Some(TouchPurpose::Tap(touch, click_count, Instant::now())); |
| 304 | |
| 305 | Some(ConvertedEvent::Event(crate::event::Event::LeftMouseDown { |
| 306 | position: window_state.last_cursor_position.to_vec2f(), |
| 307 | click_count, |
| 308 | is_first_mouse: false, |
| 309 | modifiers: from_winit_modifiers_state(window_state.modifiers), |
| 310 | })) |
| 311 | } |
| 312 | |
| 313 | /// Handles the `TouchPhase::Moved` phase of a touch event. |
| 314 | fn convert_touch_moved( |
| 315 | touch: Touch, |
| 316 | window_state: &mut WindowState, |
| 317 | scale_factor: f32, |
| 318 | titlebar_height: f32, |
| 319 | ) -> Option<ConvertedEvent> { |
| 320 | match window_state.last_touch_purpose { |
| 321 | Some(TouchPurpose::Tap(last_touch, click_count, start_time)) => { |
| 322 | // Compute deltas in logical pixels for consistent behavior across DPI settings. |
| 323 | let current_logical: LogicalPosition<f64> = |
| 324 | touch.location.to_logical(scale_factor as f64); |
| 325 | let last_logical: LogicalPosition<f64> = |
| 326 | last_touch.location.to_logical(scale_factor as f64); |
| 327 | let delta_x = current_logical.x - last_logical.x; |
| 328 | let delta_y = current_logical.y - last_logical.y; |
| 329 | |
| 330 | // Not moved enough to classify gesture yet |
| 331 | if delta_x.abs() <= MAX_TAP_DISTANCE && delta_y.abs() <= MAX_TAP_DISTANCE { |
| 332 | return None; |
| 333 | } |
| 334 | |
| 335 | window_state.last_cursor_position = touch.location.to_logical(scale_factor as f64); |
| 336 | |
| 337 | // Double-tap + drag = text selection |
| 338 | if click_count >= 2 { |
| 339 | window_state.last_touch_purpose = Some(TouchPurpose::Select); |
| 340 | return Some(ConvertedEvent::Event( |
| 341 | crate::event::Event::LeftMouseDragged { |
| 342 | position: window_state.last_cursor_position.to_vec2f(), |
| 343 | modifiers: from_winit_modifiers_state(window_state.modifiers), |
| 344 | }, |
| 345 | )); |
| 346 | } |
| 347 | |
| 348 | // Touch in titlebar = window drag |
| 349 | let initial_pos: winit::dpi::LogicalPosition<f32> = |
| 350 | last_touch.location.to_logical(scale_factor as f64); |
| 351 | if initial_pos.y < titlebar_height && !cfg!(target_family = "wasm") { |
| 352 | let start_touch = last_touch.location; |
| 353 | window_state.last_touch_purpose = Some(TouchPurpose::WindowDrag { start_touch }); |
| 354 | return Some(ConvertedEvent::MoveWindowBy { |
| 355 | current_touch: touch.location, |
| 356 | start_touch, |
| 357 | }); |
| 358 | } |
| 359 | |
| 360 | // Single tap + swipe = scroll (default) |
| 361 | window_state.last_touch_purpose = Some(TouchPurpose::Scroll(last_touch)); |
| 362 | let elapsed = start_time |
| 363 | .elapsed() |
| 364 | .as_secs_f32() |
| 365 | .max(MIN_VELOCITY_TIME_DELTA); |
| 366 | window_state.scroll_velocity = Some(ScrollVelocity { |
| 367 | velocity: Vector2F::new(delta_x as f32, delta_y as f32) / elapsed, |
| 368 | last_update: Instant::now(), |
| 369 | }); |
| 370 | Some(ConvertedEvent::Event(crate::event::Event::ScrollWheel { |
| 371 | position: window_state.last_cursor_position.to_vec2f(), |
| 372 | delta: Vector2F::new(delta_x as f32, delta_y as f32), |
| 373 | precise: true, |
| 374 | modifiers: from_winit_modifiers_state(window_state.modifiers), |
| 375 | })) |
| 376 | } |
| 377 | Some(TouchPurpose::Scroll(last_touch)) => { |
| 378 | // Continue scrolling. Use logical pixels for consistent scroll speed across DPI. |
| 379 | window_state.last_touch_purpose = Some(TouchPurpose::Scroll(touch)); |
| 380 | let current_logical: LogicalPosition<f64> = |
| 381 | touch.location.to_logical(scale_factor as f64); |
| 382 | let last_logical: LogicalPosition<f64> = |
| 383 | last_touch.location.to_logical(scale_factor as f64); |
| 384 | let delta_x = current_logical.x - last_logical.x; |
| 385 | let delta_y = current_logical.y - last_logical.y; |
| 386 | window_state.last_cursor_position = current_logical.cast(); |
| 387 | |
| 388 | // Update velocity for momentum scrolling. |
| 389 | let now = Instant::now(); |
| 390 | let delta = Vector2F::new(delta_x as f32, delta_y as f32); |
| 391 | let time_delta = window_state |
| 392 | .scroll_velocity |
| 393 | .map(|v| now.duration_since(v.last_update).as_secs_f32()) |
| 394 | .unwrap_or(MOMENTUM_DECAY_INTERVAL) |
| 395 | .max(MIN_VELOCITY_TIME_DELTA); |
| 396 | window_state.scroll_velocity = Some(ScrollVelocity { |
| 397 | velocity: delta / time_delta, |
| 398 | last_update: now, |
| 399 | }); |
| 400 | |
| 401 | Some(ConvertedEvent::Event(crate::event::Event::ScrollWheel { |
| 402 | position: window_state.last_cursor_position.to_vec2f(), |
| 403 | delta, |
| 404 | precise: true, |
| 405 | modifiers: from_winit_modifiers_state(window_state.modifiers), |
| 406 | })) |
| 407 | } |
| 408 | Some(TouchPurpose::Select) => { |
| 409 | // Continue selecting. |
| 410 | window_state.last_cursor_position = touch.location.to_logical(scale_factor as f64); |
| 411 | Some(ConvertedEvent::Event( |
| 412 | crate::event::Event::LeftMouseDragged { |
| 413 | position: window_state.last_cursor_position.to_vec2f(), |
| 414 | modifiers: from_winit_modifiers_state(window_state.modifiers), |
| 415 | }, |
| 416 | )) |
| 417 | } |
| 418 | Some(TouchPurpose::WindowDrag { start_touch }) => Some(ConvertedEvent::MoveWindowBy { |
| 419 | current_touch: touch.location, |
| 420 | start_touch, |
| 421 | }), |
| 422 | None => None, |
| 423 | } |
| 424 | } |
| 425 | |
| 426 | /// Handles the `TouchPhase::Ended` phase of a touch event. |
| 427 | /// |
| 428 | /// Note: This function intentionally does NOT clear `last_touch_purpose` for normal taps. |
| 429 | /// The purpose is cleared later in `handle_converted_warpui_event` after soft keyboard |
| 430 | /// logic runs, which needs to check if the touch was still a Tap (vs Scroll/Select/WindowDrag). |
| 431 | fn convert_touch_ended( |
| 432 | touch: Touch, |
| 433 | window_state: &mut WindowState, |
| 434 | scale_factor: f32, |
| 435 | ) -> Option<ConvertedEvent> { |
| 436 | // Check the purpose but don't clear it yet - we'll clear it later |
| 437 | // in handle_converted_warpui_event after checking if we need to |
| 438 | // update the soft keyboard. |
| 439 | let is_long_press = |
| 440 | if let Some(TouchPurpose::Tap(_, _, start_time)) = &window_state.last_touch_purpose { |
| 441 | start_time.elapsed() >= LONG_PRESS_DURATION |
| 442 | } else { |
| 443 | false |
| 444 | }; |
| 445 | |
| 446 | let is_window_drag = matches!( |
| 447 | &window_state.last_touch_purpose, |
| 448 | Some(TouchPurpose::WindowDrag { .. }) |
| 449 | ); |
| 450 | |
| 451 | window_state.last_cursor_position = touch.location.to_logical(scale_factor as f64); |
| 452 | window_state.current_mouse_button_pressed = None; |
| 453 | |
| 454 | // Long press: still in Tap state and held longer than LONG_PRESS_DURATION |
| 455 | if is_long_press { |
| 456 | // Clear the purpose here since we're returning early |
| 457 | window_state.last_touch_purpose = None; |
| 458 | return Some(ConvertedEvent::Event(crate::event::Event::RightMouseDown { |
| 459 | position: window_state.last_cursor_position.to_vec2f(), |
| 460 | cmd: window_state.modifiers.super_key(), |
| 461 | shift: window_state.modifiers.shift_key(), |
| 462 | click_count: 1, |
| 463 | })); |
| 464 | } |
| 465 | |
| 466 | // WindowDrag doesn't need a mouse up event |
| 467 | if is_window_drag { |
| 468 | // Clear the purpose here since we're returning early |
| 469 | window_state.last_touch_purpose = None; |
| 470 | return None; |
| 471 | } |
| 472 | |
| 473 | // Don't clear last_touch_purpose yet - it will be cleared in |
| 474 | // handle_converted_warpui_event after soft keyboard logic runs. |
| 475 | Some(ConvertedEvent::Event(crate::event::Event::LeftMouseUp { |
| 476 | position: window_state.last_cursor_position.to_vec2f(), |
| 477 | modifiers: from_winit_modifiers_state(window_state.modifiers), |
| 478 | })) |
| 479 | } |
| 480 | |
| 481 | /// Handles the `TouchPhase::Cancelled` phase of a touch event. |
| 482 | /// |
| 483 | /// Cancelled touches only clean up state without triggering any action events. |
| 484 | fn convert_touch_cancelled( |
| 485 | touch: Touch, |
| 486 | window_state: &mut WindowState, |
| 487 | scale_factor: f32, |
| 488 | ) -> Option<ConvertedEvent> { |
| 489 | window_state.last_touch_purpose.take(); |
| 490 | window_state.last_cursor_position = touch.location.to_logical(scale_factor as f64); |
| 491 | window_state.current_mouse_button_pressed = None; |
| 492 | None |
| 493 | } |
| 494 | |
| 495 | /// A structure to manage state |
| 496 | /// [`winit::event_loop::EventLoop`] and generate the appropriate callbacks into |
| 497 | /// the UI framework. |
| 498 | pub(super) struct EventLoop { |
| 499 | ui_app: crate::App, |
| 500 | callbacks: AppCallbackDispatcher, |
| 501 | init_fn: Option<platform::app::AppInitCallbackFn>, |
| 502 | window_class: Option<String>, |
| 503 | state: State, |
| 504 | proxy: EventLoopProxy<CustomEvent>, |
| 505 | ime_enabled: bool, |
| 506 | /// Whether to downrank non-NVIDIA vulkan adapters. This is set to true when we detect a DRI3 |
| 507 | /// error that occurs when trying to present against a non-NVIDIA Vulkan adapter when the |
| 508 | /// PRIME Profile is set to "Performance" mode. It's not fully clear why this error occurs. Our |
| 509 | /// theory is that when the PRIME performance profile is enabled (which indicates to NVIDIA |
| 510 | /// Optimus that the machine should _only_ render to the NVIDIA GPU), Optimus determines that |
| 511 | /// the Integrated GPU won't be rendered to and puts it in an idle / partially loaded state that |
| 512 | /// will eventually trigger these DRI3 `BadMatch` errors when we attempt to render to it. |
| 513 | downrank_non_nvidia_vulkan_adapters: bool, |
| 514 | /// Soft keyboard manager for mobile WASM. |
| 515 | #[cfg(target_family = "wasm")] |
| 516 | soft_keyboard_manager: Option<std::rc::Rc<crate::platform::wasm::SoftKeyboardManager>>, |
| 517 | } |
| 518 | |
| 519 | impl EventLoop { |
| 520 | pub fn new( |
| 521 | ui_app: crate::App, |
| 522 | callbacks: platform::AppCallbacks, |
| 523 | init_fn: impl FnOnce(&mut AppContext, LocalBoxFuture<'static, crate::App>) + 'static, |
| 524 | window_class: Option<String>, |
| 525 | proxy: EventLoopProxy<CustomEvent>, |
| 526 | ) -> Self { |
| 527 | Self { |
| 528 | ui_app: ui_app.clone(), |
| 529 | callbacks: AppCallbackDispatcher::new(callbacks, ui_app), |
| 530 | init_fn: Some(Box::new(init_fn)), |
| 531 | window_class, |
| 532 | state: Default::default(), |
| 533 | proxy, |
| 534 | ime_enabled: false, |
| 535 | downrank_non_nvidia_vulkan_adapters: false, |
| 536 | #[cfg(target_family = "wasm")] |
| 537 | soft_keyboard_manager: None, |
| 538 | } |
| 539 | } |
| 540 | |
| 541 | /// Handles a single [`winit::event::Event`]. |
| 542 | pub fn handle_event(&mut self, evt: Event<CustomEvent>, window_target: &ActiveEventLoop) { |
| 543 | window_target.set_control_flow(ControlFlow::Wait); |
| 544 | |
| 545 | match evt { |
| 546 | Event::NewEvents(StartCause::Init) => { |
| 547 | #[cfg(target_os = "linux")] |
| 548 | { |
| 549 | let windowing_system = |
| 550 | if winit::platform::x11::ActiveEventLoopExtX11::is_x11(window_target) { |
| 551 | crate::windowing::WindowingSystem::X11 |
| 552 | } else { |
| 553 | crate::windowing::WindowingSystem::Wayland |
| 554 | }; |
| 555 | log::info!("Running app with windowing system: {windowing_system:?}"); |
| 556 | if let Err(err) = super::app::WINDOWING_SYSTEM.set(windowing_system) { |
| 557 | log::warn!("Could not set global static for windowing system: {err:?}"); |
| 558 | } |
| 559 | } |
| 560 | |
| 561 | if let Some(init_fn) = self.init_fn.take() { |
| 562 | self.callbacks.initialize_app(init_fn); |
| 563 | } |
| 564 | |
| 565 | // Start listening for various platform events. |
| 566 | #[cfg(target_os = "linux")] |
| 567 | { |
| 568 | super::linux::watch_suspend_resume_changes( |
| 569 | self.proxy.clone(), |
| 570 | &self.ui_app.background_executor(), |
| 571 | ); |
| 572 | super::linux::watch_desktop_settings_changes( |
| 573 | self.proxy.clone(), |
| 574 | &self.ui_app.background_executor(), |
| 575 | ); |
| 576 | if self.callbacks.has_internet_reachability_changed_callback() { |
| 577 | super::linux::watch_network_status_changed( |
| 578 | self.proxy.clone(), |
| 579 | &self.ui_app.background_executor(), |
| 580 | ); |
| 581 | } |
| 582 | } |
| 583 | |
| 584 | #[cfg(windows)] |
| 585 | match add_network_connection_listener(self.proxy.clone()) { |
| 586 | Ok(listener) => { |
| 587 | self.state.network_connection_listener = Some(listener); |
| 588 | } |
| 589 | Err(e) => { |
| 590 | log::warn!("Creating a network connection listener failed: {e:?}"); |
| 591 | } |
| 592 | } |
| 593 | |
| 594 | // Initialize soft keyboard support on mobile WASM devices. |
| 595 | #[cfg(target_family = "wasm")] |
| 596 | { |
| 597 | self.initialize_soft_keyboard(); |
| 598 | } |
| 599 | } |
| 600 | Event::UserEvent(CustomEvent::OpenWindow { |
| 601 | window_id, |
| 602 | window_options, |
| 603 | }) => { |
| 604 | let Some((window, is_tiling_window_manager)) = self.ui_app.update(|ctx| { |
| 605 | let window = ctx.windows().platform_window(window_id)?; |
| 606 | let is_tiling_window_manager = ctx.windows().is_tiling_window_manager(); |
| 607 | Some((window, is_tiling_window_manager)) |
| 608 | }) else { |
| 609 | return; |
| 610 | }; |
| 611 | |
| 612 | let window = downcast_window(window.as_ref()); |
| 613 | |
| 614 | match window.open_window( |
| 615 | window_target, |
| 616 | window_options, |
| 617 | &self.window_class, |
| 618 | is_tiling_window_manager, |
| 619 | self.downrank_non_nvidia_vulkan_adapters, |
| 620 | ) { |
| 621 | Ok(winit_window_id) => { |
| 622 | let window_state = WindowState::new(window_id); |
| 623 | self.state.windows.insert(winit_window_id, window_state); |
| 624 | // Now that the window has opened and we know its |
| 625 | // actual size, notify the framework that the window |
| 626 | // size may have (almost certainly) changed. |
| 627 | self.callbacks.for_window(window).window_resized(window); |
| 628 | } |
| 629 | Err(err) => { |
| 630 | log::error!("Failed to open window: {err:#}"); |
| 631 | // Tell the app that the window is "closing". |
| 632 | self.callbacks.window_will_close(window_id); |
| 633 | } |
| 634 | } |
| 635 | } |
| 636 | Event::UserEvent(CustomEvent::RunTask(task)) => { |
| 637 | let task = ManuallyDrop::into_inner(task); |
| 638 | task.run(); |
| 639 | } |
| 640 | Event::UserEvent(CustomEvent::Terminate(termination_mode)) => { |
| 641 | if let ApproveTerminateResult::Terminate = |
| 642 | self.terminate_app_requested(termination_mode) |
| 643 | { |
| 644 | window_target.exit(); |
| 645 | } |
| 646 | } |
| 647 | Event::UserEvent(CustomEvent::UpdateUIApp(callback)) => { |
| 648 | self.ui_app.update(callback); |
| 649 | } |
| 650 | Event::UserEvent(CustomEvent::GlobalShortcutTriggered(shortcut)) => { |
| 651 | self.callbacks.global_shortcut_triggered(shortcut) |
| 652 | } |
| 653 | Event::UserEvent(CustomEvent::CloseWindow { |
| 654 | window_id, |
| 655 | termination_mode, |
| 656 | }) => { |
| 657 | if let Some(winit_window_id) = self |
| 658 | .state |
| 659 | .windows |
| 660 | .iter() |
| 661 | .find(|(_, v)| v.window_id == window_id) |
| 662 | .map(|(k, _)| k) |
| 663 | .cloned() |
| 664 | { |
| 665 | self.close_window_requested( |
| 666 | window_id, |
| 667 | winit_window_id, |
| 668 | termination_mode, |
| 669 | window_target, |
| 670 | ) |
| 671 | } |
| 672 | } |
| 673 | Event::UserEvent(CustomEvent::ActiveWindowChanged) => { |
| 674 | let app_was_active = self |
| 675 | .ui_app |
| 676 | .read(|ctx| ctx.windows().active_window()) |
| 677 | .is_some(); |
| 678 | |
| 679 | let active_window_id = match self.state.pending_active_window_change.take() { |
| 680 | None => return, |
| 681 | Some(ActiveWindowChange::FocusOut) => None, |
| 682 | Some(ActiveWindowChange::FocusIn(window_id)) => Some(window_id), |
| 683 | }; |
| 684 | let active_window_id = active_window_id |
| 685 | .and_then(|window_id| self.state.windows.get(&window_id)) |
| 686 | .map(|state| state.window_id); |
| 687 | self.callbacks.active_window_changed(active_window_id); |
| 688 | |
| 689 | // If the application became active or inactive, invoke the appropriate callback. |
| 690 | let app_is_active = active_window_id.is_some(); |
| 691 | match (app_was_active, app_is_active) { |
| 692 | (false, true) => self.callbacks.app_became_active(), |
| 693 | (true, false) => self.callbacks.app_resigned_active(), |
| 694 | _ => {} |
| 695 | }; |
| 696 | } |
| 697 | Event::UserEvent(CustomEvent::RequestUserAttention { window_id }) => { |
| 698 | self.ui_app.update(|ctx| { |
| 699 | if ctx.windows().active_window() == Some(window_id) { |
| 700 | // The current window is already active, early return since requesting user attention would be |
| 701 | // a noop. |
| 702 | return; |
| 703 | } |
| 704 | |
| 705 | let Some(window) = ctx.windows().platform_window(window_id) else { |
| 706 | return; |
| 707 | }; |
| 708 | |
| 709 | let window = downcast_window(window.as_ref()); |
| 710 | window.request_user_attention(); |
| 711 | |
| 712 | // To mimic the behavior on Mac, we only request user attention for 1 second before then stopping |
| 713 | // the request. This is especially needed on x11 since the app icon will bounce in perpetuity until |
| 714 | // is explicitly told to stop. |
| 715 | let event_loop_proxy = self.proxy.clone(); |
| 716 | ctx.foreground_executor() |
| 717 | .spawn(async move { |
| 718 | Timer::after(Duration::from_secs(1)).await; |
| 719 | let _ = event_loop_proxy |
| 720 | .send_event(CustomEvent::StopRequestingUserAttention { window_id }); |
| 721 | }) |
| 722 | .detach(); |
| 723 | }); |
| 724 | } |
| 725 | Event::UserEvent(CustomEvent::StopRequestingUserAttention { window_id }) => { |
| 726 | self.ui_app.update(|ctx| { |
| 727 | let Some(window) = ctx.windows().platform_window(window_id) else { |
| 728 | return; |
| 729 | }; |
| 730 | |
| 731 | let window = downcast_window(window.as_ref()); |
| 732 | window.stop_requesting_user_attention(); |
| 733 | }); |
| 734 | } |
| 735 | Event::UserEvent(CustomEvent::Clipboard(clipboard_event)) => { |
| 736 | self.handle_clipboard_event(clipboard_event); |
| 737 | } |
| 738 | Event::UserEvent(CustomEvent::SetCursorShape(cursor)) => { |
| 739 | self.ui_app.update(|ctx| { |
| 740 | let Some(window_id) = ctx.windows().active_window() else { |
| 741 | return; |
| 742 | }; |
| 743 | |
| 744 | let Some(window) = ctx.windows().platform_window(window_id) else { |
| 745 | return; |
| 746 | }; |
| 747 | |
| 748 | let winit_window = downcast_window(window.as_ref()); |
| 749 | winit_window.set_cursor_icon(cursor); |
| 750 | }); |
| 751 | } |
| 752 | Event::UserEvent(CustomEvent::ActiveCursorPositionUpdated) => { |
| 753 | if self.ime_enabled { |
| 754 | self.update_ime_position(); |
| 755 | } |
| 756 | } |
| 757 | Event::UserEvent(CustomEvent::AboutToSleep) => { |
| 758 | #[cfg(target_os = "linux")] |
| 759 | self.prepare_for_sleep_on_linux(window_target); |
| 760 | |
| 761 | self.callbacks.cpu_will_sleep(); |
| 762 | } |
| 763 | Event::UserEvent(CustomEvent::ResumedFromSleep) => { |
| 764 | #[cfg(target_os = "linux")] |
| 765 | self.resume_from_sleep_on_linux(); |
| 766 | |
| 767 | self.callbacks.cpu_awakened(); |
| 768 | } |
| 769 | |
| 770 | Event::UserEvent(CustomEvent::InternetConnected) => { |
| 771 | self.callbacks.internet_reachability_changed(true); |
| 772 | } |
| 773 | Event::UserEvent(CustomEvent::InternetDisconnected) => { |
| 774 | self.callbacks.internet_reachability_changed(false) |
| 775 | } |
| 776 | Event::UserEvent(CustomEvent::SystemThemeChanged) => { |
| 777 | self.callbacks.os_appearance_changed(); |
| 778 | } |
| 779 | Event::WindowEvent { |
| 780 | window_id: _, |
| 781 | event: WindowEvent::ThemeChanged(_new_theme), |
| 782 | } => { |
| 783 | self.callbacks.os_appearance_changed(); |
| 784 | } |
| 785 | Event::UserEvent(CustomEvent::SendNotification { |
| 786 | notification_info, |
| 787 | window_id, |
| 788 | }) => { |
| 789 | self.send_notification(notification_info, window_id); |
| 790 | } |
| 791 | Event::UserEvent(CustomEvent::FocusWindow { window_id }) => { |
| 792 | self.focus_window(window_id); |
| 793 | } |
| 794 | Event::UserEvent(CustomEvent::RequestNotificationPermissions(callback)) => { |
| 795 | self.request_notification_permissions(callback); |
| 796 | } |
| 797 | Event::UserEvent(CustomEvent::DragAndDropFilesDebounced { window_id }) => { |
| 798 | self.handle_debounced_drag_drop(window_id); |
| 799 | } |
| 800 | #[cfg(target_family = "wasm")] |
| 801 | Event::UserEvent(CustomEvent::SoftKeyboardInput(input)) => { |
| 802 | self.handle_soft_keyboard_input(input); |
| 803 | } |
| 804 | #[cfg(target_family = "wasm")] |
| 805 | Event::UserEvent(CustomEvent::VisualViewportResized { width, height }) => { |
| 806 | self.handle_visual_viewport_resize(width, height); |
| 807 | } |
| 808 | Event::UserEvent(CustomEvent::MomentumScroll { window_id }) => { |
| 809 | let Some(window_state) = self.state.windows.get_mut(&window_id) else { |
| 810 | return; |
| 811 | }; |
| 812 | let Some(mut velocity) = window_state.scroll_velocity else { |
| 813 | return; |
| 814 | }; |
| 815 | |
| 816 | let now = Instant::now(); |
| 817 | let elapsed = now.duration_since(velocity.last_update).as_secs_f32(); |
| 818 | velocity.last_update = now; |
| 819 | |
| 820 | // Apply time-based decay: v_new = v_old * decay^(Δt/interval) |
| 821 | let decay_factor = MOMENTUM_DECAY.powf(elapsed / MOMENTUM_DECAY_INTERVAL); |
| 822 | velocity.velocity *= decay_factor; |
| 823 | |
| 824 | if velocity.velocity.length() < MOMENTUM_MIN_VELOCITY { |
| 825 | window_state.cancel_momentum_scroll(); |
| 826 | return; |
| 827 | } |
| 828 | |
| 829 | window_state.scroll_velocity = Some(velocity); |
| 830 | |
| 831 | // Convert velocity (px/sec) to scroll delta using elapsed time. |
| 832 | let delta = velocity.velocity * elapsed; |
| 833 | let position = window_state.last_cursor_position.to_vec2f(); |
| 834 | self.handle_converted_warpui_event( |
| 835 | window_id, |
| 836 | crate::event::Event::ScrollWheel { |
| 837 | position, |
| 838 | delta, |
| 839 | precise: true, |
| 840 | modifiers: ModifiersState::default(), |
| 841 | }, |
| 842 | ); |
| 843 | } |
| 844 | Event::WindowEvent { |
| 845 | window_id, |
| 846 | event: WindowEvent::RedrawRequested, |
| 847 | } => self.redraw_window(window_id, window_target), |
| 848 | Event::WindowEvent { |
| 849 | window_id: winit_window_id, |
| 850 | event: WindowEvent::CloseRequested, |
| 851 | } => { |
| 852 | if let Some(state) = self.state.windows.get(&winit_window_id) { |
| 853 | self.close_window_requested( |
| 854 | state.window_id, |
| 855 | winit_window_id, |
| 856 | TerminationMode::Cancellable, |
| 857 | window_target, |
| 858 | ); |
| 859 | } |
| 860 | } |
| 861 | Event::WindowEvent { |
| 862 | event: WindowEvent::Destroyed, |
| 863 | .. |
| 864 | } => { |
| 865 | // TODO(vorporeal): Should we be calling approve_termination() here? |
| 866 | // i.e.: should we invoke a helper shared with CustomEvent::Terminate? |
| 867 | if cfg!(not(target_os = "macos")) && self.state.windows.is_empty() { |
| 868 | window_target.exit(); |
| 869 | } |
| 870 | |
| 871 | // When a window loses focus, winit will emit [`WindowEvent::Focused(false)`]. |
| 872 | // However, that doesn't fire when a window is closed. So, we trigger that code path |
| 873 | // from here to make sure the app knows to update its active window. |
| 874 | self.state.pending_active_window_change = Some(ActiveWindowChange::FocusOut); |
| 875 | let _ = self.proxy.send_event(CustomEvent::ActiveWindowChanged); |
| 876 | } |
| 877 | Event::WindowEvent { |
| 878 | window_id, |
| 879 | event: WindowEvent::Ime(evt), |
| 880 | } => { |
| 881 | self.handle_ime_event(window_id, evt); |
| 882 | } |
| 883 | Event::WindowEvent { |
| 884 | window_id, |
| 885 | event: |
| 886 | WindowEvent::ScaleFactorChanged { |
| 887 | scale_factor, |
| 888 | mut inner_size_writer, |
| 889 | }, |
| 890 | } => { |
| 891 | // The following correction is only needed on Windows. |
| 892 | if !cfg!(windows) { |
| 893 | return; |
| 894 | } |
| 895 | let Some(window_state) = self.state.windows.get(&window_id) else { |
| 896 | return; |
| 897 | }; |
| 898 | let Some(window) = self |
| 899 | .ui_app |
| 900 | .read(|ctx| ctx.windows().platform_window(window_state.window_id)) |
| 901 | else { |
| 902 | return; |
| 903 | }; |
| 904 | |
| 905 | // There is a winit bug such that events which cause a window to switch displays to |
| 906 | // one with a different scale factor resize the Warp window to an absurdly small |
| 907 | // size, <157, 25> on my system when I repro it. Events include unplugging a |
| 908 | // display, changing a display from extended to mirrored, and the like. We work |
| 909 | // around that by listening for [`WindowEvent::ScaleFactorChanged`] and changing |
| 910 | // the size back up to the minimum dimensions. |
| 911 | let size = window.as_ctx().size(); |
| 912 | let mut size = LogicalSize::new(size.x() as f64, size.y() as f64); |
| 913 | let mut request_new_size = false; |
| 914 | if size.width < MIN_WINDOW_SIZE.width { |
| 915 | size.width = MIN_WINDOW_SIZE.width; |
| 916 | request_new_size = true; |
| 917 | } |
| 918 | if size.height < MIN_WINDOW_SIZE.height { |
| 919 | size.height = MIN_WINDOW_SIZE.height; |
| 920 | request_new_size = true; |
| 921 | } |
| 922 | if request_new_size { |
| 923 | if let Err(err) = |
| 924 | inner_size_writer.request_inner_size(size.to_physical(scale_factor)) |
| 925 | { |
| 926 | log::warn!("unable to correct window size: {err:#}"); |
| 927 | } |
| 928 | } |
| 929 | } |
| 930 | Event::WindowEvent { window_id, event } => self.handle_window_event(window_id, event), |
| 931 | Event::LoopExiting => { |
| 932 | // Hide all open windows such that, if the application takes a |
| 933 | // second or two to clean up before exiting, this isn't visible |
| 934 | // to the end user. |
| 935 | self.ui_app.update(|ctx| { |
| 936 | use crate::SingletonEntity as _; |
| 937 | crate::windowing::WindowManager::handle(ctx).update( |
| 938 | ctx, |
| 939 | |window_manager, _| { |
| 940 | window_manager.hide_app(); |
| 941 | }, |
| 942 | ); |
| 943 | }); |
| 944 | |
| 945 | #[cfg(windows)] |
| 946 | if let Some(network_listener) = self.state.network_connection_listener.take() { |
| 947 | network_listener.clean_up(); |
| 948 | } |
| 949 | |
| 950 | self.callbacks.app_will_terminate(); |
| 951 | |
| 952 | // On non-web platforms, immediately terminate the process instead of returning |
| 953 | // from the event loop. This matches the behavior of |
| 954 | // `[NSApp terminate]` on macOS, and may avoid some at-exit |
| 955 | // crashes that produce noise in our crash reporting data. |
| 956 | // On web, it's not possible to exit cleanly, so just return from the event loop |
| 957 | // instead. |
| 958 | #[cfg(not(target_family = "wasm"))] |
| 959 | std::process::exit(0); |
| 960 | } |
| 961 | |
| 962 | _ => {} |
| 963 | } |
| 964 | } |
| 965 | |
| 966 | fn redraw_window( |
| 967 | &mut self, |
| 968 | window_id: winit::window::WindowId, |
| 969 | window_target: &ActiveEventLoop, |
| 970 | ) { |
| 971 | let Some(window_id) = self |
| 972 | .state |
| 973 | .windows |
| 974 | .get(&window_id) |
| 975 | .map(|state| state.window_id) |
| 976 | else { |
| 977 | log::warn!("Redraw requested for a window for which we have no state"); |
| 978 | return; |
| 979 | }; |
| 980 | let Some(window) = self |
| 981 | .ui_app |
| 982 | .read(|ctx| ctx.windows().platform_window(window_id)) |
| 983 | else { |
| 984 | log::warn!("Unable to retrieve platform window from app"); |
| 985 | return; |
| 986 | }; |
| 987 | |
| 988 | let window = downcast_window(window.as_ref()); |
| 989 | |
| 990 | #[cfg(target_os = "linux")] |
| 991 | if crate::windowing::winit::linux::take_encountered_bad_match_from_dri3_fence_from_fd() { |
| 992 | log::warn!("Encountered a DRI3FenceFromFd error, forcing use of the NVIDIA GPU and recreating resources..."); |
| 993 | self.downrank_non_nvidia_vulkan_adapters = true; |
| 994 | |
| 995 | self.ui_app.update(|ctx| { |
| 996 | for window_id in ctx.window_ids() { |
| 997 | let Some(window) = ctx.windows().platform_window(window_id) else { |
| 998 | return; |
| 999 | }; |
| 1000 | |
| 1001 | let winit_window = downcast_window(window.as_ref()); |
| 1002 | winit_window.recreate_renderer(self.downrank_non_nvidia_vulkan_adapters); |
| 1003 | } |
| 1004 | }) |
| 1005 | } |
| 1006 | |
| 1007 | let render_result = (|| { |
| 1008 | // Before building the scene, make sure the window size is up-to-date, to ensure |
| 1009 | // that the scene is built at a size that matches the size we're about to render at. |
| 1010 | window.update_size_if_needed()?; |
| 1011 | |
| 1012 | let new_scene = if !window.has_scene() { |
| 1013 | Some(self.callbacks.for_window(window).build_scene(window)) |
| 1014 | } else { |
| 1015 | None |
| 1016 | }; |
| 1017 | |
| 1018 | self.callbacks |
| 1019 | .with_mutable_app_context(|ctx| window.render(new_scene, ctx.font_cache())) |
| 1020 | })(); |
| 1021 | |
| 1022 | match render_result { |
| 1023 | Ok(_) => self.callbacks.for_window(window).frame_drawn(), |
| 1024 | Err(err) => { |
| 1025 | log::warn!("Failed to render frame: {err:#}"); |
| 1026 | self.callbacks.for_window(window).frame_failed_to_draw(); |
| 1027 | |
| 1028 | match err { |
| 1029 | // If we failed to configure the surface, or... |
| 1030 | renderer::Error::SurfaceConfigureError { .. } |
| 1031 | // If the device was lost, or... |
| 1032 | | renderer::Error::SurfaceError(renderer::GetSurfaceTextureError::Lost) |
| 1033 | | renderer::Error::DeviceLost |
| 1034 | // If we ran into any other wgpu error - |
| 1035 | | renderer::Error::Unknown(_)=> { |
| 1036 | log::warn!("Recreating the renderer in an attempt to recover..."); |
| 1037 | window.drop_renderer(Box::new(window_target.owned_display_handle())); |
| 1038 | window.recreate_renderer(self.downrank_non_nvidia_vulkan_adapters); |
| 1039 | } |
| 1040 | _ => {} |
| 1041 | } |
| 1042 | } |
| 1043 | } |
| 1044 | } |
| 1045 | |
| 1046 | /// Handles a [`winit::event::WindowEvent`]. |
| 1047 | fn handle_window_event(&mut self, window_id: winit::window::WindowId, evt: WindowEvent) { |
| 1048 | let Some(event) = self.convert_window_event(window_id, evt) else { |
| 1049 | return; |
| 1050 | }; |
| 1051 | let Some(window_state) = self.state.windows.get_mut(&window_id) else { |
| 1052 | return; |
| 1053 | }; |
| 1054 | let Some(window) = self |
| 1055 | .ui_app |
| 1056 | .read(|ctx| ctx.windows().platform_window(window_state.window_id)) |
| 1057 | else { |
| 1058 | return; |
| 1059 | }; |
| 1060 | |
| 1061 | match event { |
| 1062 | ConvertedEvent::Event(event) => { |
| 1063 | self.handle_converted_warpui_event(window_id, event); |
| 1064 | } |
| 1065 | ConvertedEvent::Resize => { |
| 1066 | let window = downcast_window(window.as_ref()); |
| 1067 | window.handle_resize(); |
| 1068 | self.callbacks.for_window(window).window_resized(window); |
| 1069 | self.callbacks.window_resized(); |
| 1070 | } |
| 1071 | ConvertedEvent::ModifierKeyChanged { key_code, state } => { |
| 1072 | let mut window_callbacks = self.callbacks.for_window(window.as_ref()); |
| 1073 | window_callbacks.dispatch_event(crate::event::Event::ModifierKeyChanged { |
| 1074 | key_code, |
| 1075 | state: match state { |
| 1076 | ElementState::Pressed => crate::event::KeyState::Pressed, |
| 1077 | ElementState::Released => crate::event::KeyState::Released, |
| 1078 | }, |
| 1079 | }); |
| 1080 | } |
| 1081 | ConvertedEvent::KeyDownWithTypedCharacters { chars, event } => { |
| 1082 | // To match the behavior of macOS: first try to dispatch the underlying keydown |
| 1083 | // event. If it was not handled (and doesn't include the cmd modifier), send a |
| 1084 | // `TypedCharacters` event. (We don't send `TypedCharacters` events for keypresess |
| 1085 | // that include the cmd key because they are assumed to be |
| 1086 | // intended as OS-level or application-level shortcuts. This matches the behavior |
| 1087 | // on macOS.) |
| 1088 | let cmd_pressed = match &event { |
| 1089 | crate::event::Event::KeyDown { keystroke, .. } => keystroke.cmd, |
| 1090 | _ => false, |
| 1091 | }; |
| 1092 | |
| 1093 | let mut window_callbacks = self.callbacks.for_window(window.as_ref()); |
| 1094 | let result = window_callbacks.dispatch_event(event); |
| 1095 | if !result.handled && !cmd_pressed { |
| 1096 | if let Some(chars) = chars { |
| 1097 | window_callbacks.dispatch_event(TypedCharacters { chars }); |
| 1098 | } |
| 1099 | } |
| 1100 | } |
| 1101 | ConvertedEvent::WindowMoved { new_position } => { |
| 1102 | let window = downcast_window(window.as_ref()); |
| 1103 | let scale_factor = self.ui_app.update(|ctx| { |
| 1104 | ctx.windows() |
| 1105 | .platform_window(window_state.window_id) |
| 1106 | .expect("window should exist") |
| 1107 | .backing_scale_factor() |
| 1108 | }); |
| 1109 | let position = new_position.to_logical(scale_factor.into()); |
| 1110 | let size = window.size(); |
| 1111 | self.callbacks |
| 1112 | .for_window(window) |
| 1113 | .window_moved(RectF::new(vec2f(position.x, position.y), size)); |
| 1114 | self.callbacks.window_moved(); |
| 1115 | } |
| 1116 | ConvertedEvent::MoveWindowBy { |
| 1117 | current_touch, |
| 1118 | start_touch, |
| 1119 | } => { |
| 1120 | let winit_window = downcast_window(window.as_ref()); |
| 1121 | if let Some(current_window) = winit_window.outer_position() { |
| 1122 | // target = current_window + (current_touch - start_touch) |
| 1123 | let target_x = |
| 1124 | (current_window.x as f64 + current_touch.x - start_touch.x) as i32; |
| 1125 | let target_y = |
| 1126 | (current_window.y as f64 + current_touch.y - start_touch.y) as i32; |
| 1127 | winit_window.set_outer_position(PhysicalPosition::new(target_x, target_y)); |
| 1128 | } |
| 1129 | } |
| 1130 | } |
| 1131 | } |
| 1132 | |
| 1133 | /// Converts a [`winit::event::WindowEvent`] into a [`ConvertedEvent`], returning [`None`] if |
| 1134 | /// there is no equivalent/the event should be ignored. |
| 1135 | fn convert_window_event( |
| 1136 | &mut self, |
| 1137 | window_id: winit::window::WindowId, |
| 1138 | evt: winit::event::WindowEvent, |
| 1139 | ) -> Option<ConvertedEvent> { |
| 1140 | let window_state = self.state.windows.get_mut(&window_id)?; |
| 1141 | let scale_factor = self.ui_app.update(|ctx| { |
| 1142 | ctx.windows() |
| 1143 | .platform_window(window_state.window_id) |
| 1144 | .expect("window should exist") |
| 1145 | .backing_scale_factor() |
| 1146 | }); |
| 1147 | match evt { |
| 1148 | WindowEvent::ModifiersChanged(modifiers) => { |
| 1149 | let state = modifiers.state(); |
| 1150 | window_state.modifiers = state; |
| 1151 | // If Alt is no longer held at all, clear both per-side flags as a safety net |
| 1152 | // in case a key-release event was dropped (e.g. released while the window was |
| 1153 | // unfocused). |
| 1154 | if !state.alt_key() { |
| 1155 | window_state.left_alt_pressed = false; |
| 1156 | window_state.right_alt_pressed = false; |
| 1157 | } |
| 1158 | Some(ConvertedEvent::Event( |
| 1159 | crate::event::Event::ModifierStateChanged { |
| 1160 | mouse_position: window_state.last_cursor_position.to_vec2f(), |
| 1161 | modifiers: from_winit_modifiers_state(state), |
| 1162 | // TODO: when we need key codes for voice input on Linux/Windows, we'll need to populate this! |
| 1163 | key_code: None, |
| 1164 | }, |
| 1165 | )) |
| 1166 | } |
| 1167 | WindowEvent::CursorMoved { position, .. } => { |
| 1168 | window_state.last_cursor_position = position.to_logical(scale_factor as f64); |
| 1169 | match window_state.current_mouse_button_pressed { |
| 1170 | Some(MouseButton::Left) => Some(ConvertedEvent::Event( |
| 1171 | crate::event::Event::LeftMouseDragged { |
| 1172 | position: window_state.last_cursor_position.to_vec2f(), |
| 1173 | modifiers: from_winit_modifiers_state(window_state.modifiers), |
| 1174 | }, |
| 1175 | )), |
| 1176 | _ => Some(ConvertedEvent::Event(crate::event::Event::MouseMoved { |
| 1177 | position: window_state.last_cursor_position.to_vec2f(), |
| 1178 | cmd: window_state.modifiers.super_key(), |
| 1179 | shift: window_state.modifiers.shift_key(), |
| 1180 | is_synthetic: false, |
| 1181 | })), |
| 1182 | } |
| 1183 | } |
| 1184 | WindowEvent::MouseInput { state, button, .. } => match state { |
| 1185 | ElementState::Pressed => { |
| 1186 | let click_count = |
| 1187 | window_state.determine_click_count_and_update_button_state(button); |
| 1188 | match button { |
| 1189 | MouseButton::Left => { |
| 1190 | // ctrl-click should actually be registered as a right-click on mac |
| 1191 | let ctrl_click = window_state.modifiers.control_key(); |
| 1192 | if ctrl_click && OperatingSystem::get().is_mac() { |
| 1193 | Some(ConvertedEvent::Event(crate::event::Event::RightMouseDown { |
| 1194 | position: window_state.last_cursor_position.to_vec2f(), |
| 1195 | cmd: window_state.modifiers.super_key(), |
| 1196 | shift: window_state.modifiers.shift_key(), |
| 1197 | click_count, |
| 1198 | })) |
| 1199 | } else { |
| 1200 | Some(ConvertedEvent::Event(crate::event::Event::LeftMouseDown { |
| 1201 | position: window_state.last_cursor_position.to_vec2f(), |
| 1202 | click_count, |
| 1203 | is_first_mouse: false, |
| 1204 | modifiers: from_winit_modifiers_state(window_state.modifiers), |
| 1205 | })) |
| 1206 | } |
| 1207 | } |
| 1208 | MouseButton::Right => { |
| 1209 | Some(ConvertedEvent::Event(crate::event::Event::RightMouseDown { |
| 1210 | position: window_state.last_cursor_position.to_vec2f(), |
| 1211 | cmd: window_state.modifiers.super_key(), |
| 1212 | shift: window_state.modifiers.shift_key(), |
| 1213 | click_count, |
| 1214 | })) |
| 1215 | } |
| 1216 | MouseButton::Middle => Some(ConvertedEvent::Event( |
| 1217 | crate::event::Event::MiddleMouseDown { |
| 1218 | position: window_state.last_cursor_position.to_vec2f(), |
| 1219 | cmd: window_state.modifiers.super_key(), |
| 1220 | shift: window_state.modifiers.shift_key(), |
| 1221 | click_count, |
| 1222 | }, |
| 1223 | )), |
| 1224 | _ => None, |
| 1225 | } |
| 1226 | } |
| 1227 | ElementState::Released => { |
| 1228 | window_state.current_mouse_button_pressed = None; |
| 1229 | match button { |
| 1230 | MouseButton::Left => { |
| 1231 | Some(ConvertedEvent::Event(crate::event::Event::LeftMouseUp { |
| 1232 | position: window_state.last_cursor_position.to_vec2f(), |
| 1233 | modifiers: from_winit_modifiers_state(window_state.modifiers), |
| 1234 | })) |
| 1235 | } |
| 1236 | _ => None, |
| 1237 | } |
| 1238 | } |
| 1239 | }, |
| 1240 | // Handle and convert touch events into mouse events. |
| 1241 | WindowEvent::Touch(touch) => match touch.phase { |
| 1242 | TouchPhase::Started => convert_touch_started(touch, window_state, scale_factor), |
| 1243 | TouchPhase::Moved => { |
| 1244 | let titlebar_height = self |
| 1245 | .ui_app |
| 1246 | .read(|ctx| ctx.windows().platform_window(window_state.window_id)) |
| 1247 | .map(|w| downcast_window(w.as_ref()).titlebar_height()) |
| 1248 | .unwrap_or(DEFAULT_TITLEBAR_HEIGHT); |
| 1249 | convert_touch_moved(touch, window_state, scale_factor, titlebar_height) |
| 1250 | } |
| 1251 | TouchPhase::Ended => convert_touch_ended(touch, window_state, scale_factor), |
| 1252 | TouchPhase::Cancelled => convert_touch_cancelled(touch, window_state, scale_factor), |
| 1253 | }, |
| 1254 | WindowEvent::MouseWheel { delta, .. } => { |
| 1255 | let (precise, delta) = match delta { |
| 1256 | winit::event::MouseScrollDelta::LineDelta(horiz, vert) => { |
| 1257 | (false, Vector2F::new(horiz, vert)) |
| 1258 | } |
| 1259 | winit::event::MouseScrollDelta::PixelDelta(px) => { |
| 1260 | (true, px.to_logical(scale_factor as f64).to_vec2f()) |
| 1261 | } |
| 1262 | }; |
| 1263 | Some(ConvertedEvent::Event(crate::event::Event::ScrollWheel { |
| 1264 | position: window_state.last_cursor_position.to_vec2f(), |
| 1265 | delta, |
| 1266 | precise, |
| 1267 | modifiers: from_winit_modifiers_state(window_state.modifiers), |
| 1268 | })) |
| 1269 | } |
| 1270 | WindowEvent::KeyboardInput { |
| 1271 | event, |
| 1272 | is_synthetic, |
| 1273 | .. |
| 1274 | } => { |
| 1275 | // Track per-side Alt press state so that the extra-meta-keys setting can |
| 1276 | // distinguish between left Alt and right Alt. `ModifiersState` alone does |
| 1277 | // not expose which side of a modifier was pressed. |
| 1278 | if let keyboard::PhysicalKey::Code(keycode) = &event.physical_key { |
| 1279 | let is_pressed = event.state == ElementState::Pressed; |
| 1280 | match keycode { |
| 1281 | KeyCode::AltLeft => window_state.left_alt_pressed = is_pressed, |
| 1282 | KeyCode::AltRight => window_state.right_alt_pressed = is_pressed, |
| 1283 | _ => {} |
| 1284 | } |
| 1285 | } |
| 1286 | |
| 1287 | // If the event is a modifier key, just by itself, we handle it specially, issuing |
| 1288 | // the appropriate Warp-side event (ModifierKeyChanged). |
| 1289 | if let (None, keyboard::PhysicalKey::Code(keycode)) = |
| 1290 | (&event.text, &event.physical_key) |
| 1291 | { |
| 1292 | if let Ok(mapped_keycode) = try_from_winit_keycode(keycode) { |
| 1293 | return Some(ConvertedEvent::ModifierKeyChanged { |
| 1294 | key_code: mapped_keycode, |
| 1295 | state: event.state, |
| 1296 | }); |
| 1297 | } |
| 1298 | } |
| 1299 | |
| 1300 | let event_text = event.text.as_ref().map(|text| text.to_string()); |
| 1301 | let warp_ui_event = |
| 1302 | convert_keyboard_input_event(event, window_state, is_synthetic)?; |
| 1303 | Some(ConvertedEvent::KeyDownWithTypedCharacters { |
| 1304 | chars: event_text, |
| 1305 | event: warp_ui_event, |
| 1306 | }) |
| 1307 | } |
| 1308 | WindowEvent::Resized(_) => Some(ConvertedEvent::Resize), |
| 1309 | WindowEvent::Focused(is_focused) => { |
| 1310 | // On mobile WASM, ignore focus-out events. The soft keyboard's hidden input |
| 1311 | // causes spurious focus events, and mobile doesn't have the concept of |
| 1312 | // "unfocused windows" anyway - you're either in the app or switched away entirely. |
| 1313 | #[cfg(target_family = "wasm")] |
| 1314 | if !is_focused && crate::platform::wasm::is_mobile_device() { |
| 1315 | return None; |
| 1316 | } |
| 1317 | |
| 1318 | // Clear tracked per-side Alt state when we lose focus so that a release |
| 1319 | // event dropped while another window had focus can't leave us believing a |
| 1320 | // side is still held. |
| 1321 | if !is_focused { |
| 1322 | window_state.left_alt_pressed = false; |
| 1323 | window_state.right_alt_pressed = false; |
| 1324 | } |
| 1325 | |
| 1326 | // On the next tick of the event loop, notify the ui_app that focus has |
| 1327 | // transferred, but only if there isn't already one of these |
| 1328 | // [`CustomEvent::ActiveWindowChanged`] pending. This coalesces multiple |
| 1329 | // `WindowEvent::Focused` events into a single CustomEvent. |
| 1330 | if self.state.pending_active_window_change.is_none() { |
| 1331 | let _ = self.proxy.send_event(CustomEvent::ActiveWindowChanged); |
| 1332 | } |
| 1333 | if is_focused { |
| 1334 | self.state.pending_active_window_change = |
| 1335 | Some(ActiveWindowChange::FocusIn(window_id)); |
| 1336 | } else { |
| 1337 | self.state.pending_active_window_change = Some(ActiveWindowChange::FocusOut); |
| 1338 | } |
| 1339 | None |
| 1340 | } |
| 1341 | WindowEvent::DroppedFile(path_buf) => { |
| 1342 | let Some(path) = path_buf.as_os_str().to_str() else { |
| 1343 | log::warn!("Failed to convert dropped file path to UTF-8: {path_buf:?}"); |
| 1344 | return None; |
| 1345 | }; |
| 1346 | |
| 1347 | // Add this file to the pending list |
| 1348 | window_state.pending_drag_drop_files.push(path.to_string()); |
| 1349 | |
| 1350 | // Only schedule a debounced event if we don't already have one running |
| 1351 | if !window_state.has_pending_drag_drop_timer { |
| 1352 | window_state.has_pending_drag_drop_timer = true; |
| 1353 | let proxy = self.proxy.clone(); |
| 1354 | // Wait to collect all files before sending one event for all of them |
| 1355 | self.ui_app.update(|ctx| { |
| 1356 | ctx.foreground_executor() |
| 1357 | .spawn(async move { |
| 1358 | Timer::after(DRAG_DROP_DEBOUNCE_TIMEOUT).await; |
| 1359 | let _ = proxy.send_event(CustomEvent::DragAndDropFilesDebounced { |
| 1360 | window_id, |
| 1361 | }); |
| 1362 | }) |
| 1363 | .detach(); |
| 1364 | }); |
| 1365 | } |
| 1366 | None // Use debounced event instead of immediate processing |
| 1367 | } |
| 1368 | WindowEvent::Moved(new_position) => Some(ConvertedEvent::WindowMoved { new_position }), |
| 1369 | _ => None, |
| 1370 | } |
| 1371 | } |
| 1372 | |
| 1373 | #[allow(unused_variables)] |
| 1374 | fn send_notification(&mut self, notification_info: NotificationInfo, window_id: WindowId) { |
| 1375 | let proxy = self.proxy.clone(); |
| 1376 | self.ui_app.update(|ctx| { |
| 1377 | ctx.background_executor() |
| 1378 | .spawn(async move { |
| 1379 | crate::windowing::winit::notifications::send_notification( |
| 1380 | notification_info, |
| 1381 | window_id, |
| 1382 | proxy, |
| 1383 | ) |
| 1384 | .await; |
| 1385 | }) |
| 1386 | .detach() |
| 1387 | }); |
| 1388 | } |
| 1389 | |
| 1390 | fn focus_window(&mut self, window_id: WindowId) { |
| 1391 | self.ui_app.update(|ctx| { |
| 1392 | let Some(window) = ctx.windows().platform_window(window_id) else { |
| 1393 | return; |
| 1394 | }; |
| 1395 | let window = downcast_window(window.as_ref()); |
| 1396 | window.focus(); |
| 1397 | }); |
| 1398 | } |
| 1399 | |
| 1400 | #[allow(unused_variables)] |
| 1401 | fn request_notification_permissions(&mut self, callback: RequestPermissionsCallback) { |
| 1402 | let proxy = self.proxy.clone(); |
| 1403 | self.ui_app.update(|ctx| { |
| 1404 | ctx.background_executor() |
| 1405 | .spawn(async move { |
| 1406 | #[cfg(target_family = "wasm")] |
| 1407 | crate::windowing::winit::notifications::request_notification_permissions( |
| 1408 | callback, proxy, |
| 1409 | ) |
| 1410 | .await; |
| 1411 | |
| 1412 | #[cfg(target_os = "linux")] |
| 1413 | { |
| 1414 | // On Linux, there is no concept of requesting notification permissions. This |
| 1415 | // logic is hard-coded to always return an outcome of "Accepted". |
| 1416 | let _ = proxy.send_event(CustomEvent::UpdateUIApp(Box::new(|ctx| { |
| 1417 | callback(RequestPermissionsOutcome::Accepted, ctx) |
| 1418 | }))); |
| 1419 | } |
| 1420 | }) |
| 1421 | .detach() |
| 1422 | }); |
| 1423 | } |
| 1424 | |
| 1425 | /// Takes all pending dropped files and creates a single DragAndDropFiles event. |
| 1426 | fn handle_debounced_drag_drop(&mut self, window_id: winit::window::WindowId) { |
| 1427 | let Some(window_state) = self.state.windows.get_mut(&window_id) else { |
| 1428 | return; |
| 1429 | }; |
| 1430 | |
| 1431 | window_state.has_pending_drag_drop_timer = false; |
| 1432 | |
| 1433 | if window_state.pending_drag_drop_files.is_empty() { |
| 1434 | return; |
| 1435 | } |
| 1436 | |
| 1437 | // Take ownership of accumulated files |
| 1438 | let paths = std::mem::take(&mut window_state.pending_drag_drop_files); |
| 1439 | |
| 1440 | let location = window_state.last_cursor_position.to_vec2f(); |
| 1441 | |
| 1442 | // Create and dispatch the batched drag-and-drop event |
| 1443 | let drag_drop_event = crate::Event::DragAndDropFiles { paths, location }; |
| 1444 | |
| 1445 | self.handle_converted_warpui_event(window_id, drag_drop_event); |
| 1446 | } |
| 1447 | |
| 1448 | /// Handles a request to close the window with the given strato_ui and winit |
| 1449 | /// IDs. |
| 1450 | fn close_window_requested( |
| 1451 | &mut self, |
| 1452 | window_id: crate::WindowId, |
| 1453 | winit_window_id: winit::window::WindowId, |
| 1454 | termination_mode: TerminationMode, |
| 1455 | window_target: &ActiveEventLoop, |
| 1456 | ) { |
| 1457 | if matches!( |
| 1458 | termination_mode, |
| 1459 | TerminationMode::ForceTerminate | TerminationMode::ContentTransferred |
| 1460 | ) { |
| 1461 | self.close_window(window_id, winit_window_id, window_target); |
| 1462 | } else if let ApproveTerminateResult::Terminate = |
| 1463 | self.callbacks.should_close_window(window_id) |
| 1464 | { |
| 1465 | self.close_window(window_id, winit_window_id, window_target); |
| 1466 | } |
| 1467 | } |
| 1468 | |
| 1469 | fn close_window( |
| 1470 | &mut self, |
| 1471 | window_id: crate::WindowId, |
| 1472 | winit_window_id: winit::window::WindowId, |
| 1473 | window_target: &ActiveEventLoop, |
| 1474 | ) { |
| 1475 | let window_state = self.state.windows.remove(&winit_window_id); |
| 1476 | |
| 1477 | // Drop the renderer before we actually clean up the window, to ensure |
| 1478 | // that the window outlives the `wgpu` surface that references it. |
| 1479 | if let Some(WindowState { window_id, .. }) = window_state { |
| 1480 | if let Some(window) = self |
| 1481 | .ui_app |
| 1482 | .read(|ctx| ctx.windows().platform_window(window_id)) |
| 1483 | { |
| 1484 | downcast_window(window.as_ref()) |
| 1485 | .drop_renderer(Box::new(window_target.owned_display_handle())); |
| 1486 | } |
| 1487 | } |
| 1488 | |
| 1489 | self.callbacks.window_will_close(window_id) |
| 1490 | } |
| 1491 | |
| 1492 | fn terminate_app_requested( |
| 1493 | &mut self, |
| 1494 | termination_mode: TerminationMode, |
| 1495 | ) -> ApproveTerminateResult { |
| 1496 | if matches!( |
| 1497 | termination_mode, |
| 1498 | TerminationMode::ForceTerminate | TerminationMode::ContentTransferred |
| 1499 | ) { |
| 1500 | return ApproveTerminateResult::Terminate; |
| 1501 | } |
| 1502 | |
| 1503 | let approve_terminate_result = self.callbacks.should_terminate_app(); |
| 1504 | if let ApproveTerminateResult::Terminate = approve_terminate_result {} |
| 1505 | approve_terminate_result |
| 1506 | } |
| 1507 | |
| 1508 | fn handle_ime_event(&mut self, winit_window_id: WinitWindowId, event: ImeEvent) { |
| 1509 | match event { |
| 1510 | winit::event::Ime::Enabled => { |
| 1511 | self.ime_enabled = true; |
| 1512 | self.ui_app |
| 1513 | .update(|ctx| ctx.report_active_cursor_position_update()); |
| 1514 | } |
| 1515 | winit::event::Ime::Preedit(preedit_text, cursor_position) => { |
| 1516 | if !self.ime_enabled { |
| 1517 | return; |
| 1518 | } |
| 1519 | |
| 1520 | let Some(window_state) = self.state.windows.get_mut(&winit_window_id) else { |
| 1521 | return; |
| 1522 | }; |
| 1523 | let Some(window) = self |
| 1524 | .ui_app |
| 1525 | .read(|ctx| ctx.windows().platform_window(window_state.window_id)) |
| 1526 | else { |
| 1527 | return; |
| 1528 | }; |
| 1529 | |
| 1530 | let mut window_callbacks = self.callbacks.for_window(window.as_ref()); |
| 1531 | window_callbacks.dispatch_event(SetMarkedText { |
| 1532 | marked_text: preedit_text, |
| 1533 | selected_range: cursor_position |
| 1534 | .map(|cursor_position| cursor_position.0..cursor_position.1) |
| 1535 | .unwrap_or(0..0), |
| 1536 | }); |
| 1537 | } |
| 1538 | winit::event::Ime::Commit(chars) => { |
| 1539 | let Some(window_state) = self.state.windows.get_mut(&winit_window_id) else { |
| 1540 | return; |
| 1541 | }; |
| 1542 | let Some(window) = self |
| 1543 | .ui_app |
| 1544 | .read(|ctx| ctx.windows().platform_window(window_state.window_id)) |
| 1545 | else { |
| 1546 | return; |
| 1547 | }; |
| 1548 | |
| 1549 | let mut window_callbacks = self.callbacks.for_window(window.as_ref()); |
| 1550 | // We clear the marked text state before inserting typed characters so that the Vim |
| 1551 | // FSA knows it can interpret the committed text as a user insertion. |
| 1552 | window_callbacks.dispatch_event(ClearMarkedText); |
| 1553 | window_callbacks.dispatch_event(TypedCharacters { chars }); |
| 1554 | } |
| 1555 | winit::event::Ime::Disabled => { |
| 1556 | self.ime_enabled = false; |
| 1557 | } |
| 1558 | }; |
| 1559 | } |
| 1560 | |
| 1561 | /// Handle events that may be handled by strato_ui, or maybe not in some cases, e.g. window |
| 1562 | /// drag-to-resize or drag-to-move. |
| 1563 | fn handle_converted_warpui_event( |
| 1564 | &mut self, |
| 1565 | window_id: winit::window::WindowId, |
| 1566 | event: crate::Event, |
| 1567 | ) { |
| 1568 | let Some(window_state) = self.state.windows.get_mut(&window_id) else { |
| 1569 | return; |
| 1570 | }; |
| 1571 | let Some(window) = self |
| 1572 | .ui_app |
| 1573 | .read(|ctx| ctx.windows().platform_window(window_state.window_id)) |
| 1574 | else { |
| 1575 | return; |
| 1576 | }; |
| 1577 | |
| 1578 | let winit_window = downcast_window(window.as_ref()); |
| 1579 | // There is some state on the [`winit::window::Window`] that needs to be kept |
| 1580 | // in sync with the cursor position in order for drag-resizing windows to work. |
| 1581 | if let crate::Event::MouseMoved { .. } = event { |
| 1582 | if !winit_window.is_decorated() { |
| 1583 | winit_window.update_drag_resize_state(window_state.last_cursor_position); |
| 1584 | } |
| 1585 | } |
| 1586 | |
| 1587 | // Check if we should start a window drag-resize. If so, do that instead of |
| 1588 | // passing the event into strato_ui. Skip for touch events as drag_resize_window |
| 1589 | // doesn't work properly with touch input on Windows. |
| 1590 | if let crate::event::Event::LeftMouseDown { .. } = event { |
| 1591 | if !winit_window.is_decorated() |
| 1592 | && winit_window.try_drag_resize() |
| 1593 | && window_state.last_touch_purpose.is_none() |
| 1594 | { |
| 1595 | // If we initiated a drag via the method |
| 1596 | // [`winit::window::Window::drag_resize_window`], we will not |
| 1597 | // receive a MouseInput event when the button is release, so we |
| 1598 | // pre-emptively set this back to None. |
| 1599 | window_state.current_mouse_button_pressed = None; |
| 1600 | return; |
| 1601 | } |
| 1602 | } |
| 1603 | let dispatch_result = self |
| 1604 | .callbacks |
| 1605 | .for_window(winit_window) |
| 1606 | .dispatch_event(event.clone()); |
| 1607 | |
| 1608 | // If the app didn't handle the event, strato_ui might still want to do something |
| 1609 | // with it if it's a click within the "titlebar region" at the top. |
| 1610 | if !dispatch_result.handled { |
| 1611 | if let crate::event::Event::LeftMouseDown { |
| 1612 | click_count, |
| 1613 | position, |
| 1614 | .. |
| 1615 | } = event |
| 1616 | { |
| 1617 | // The WASM "window" does not support dragging or maximization. |
| 1618 | let titlebar_height = winit_window.titlebar_height(); |
| 1619 | if position.y() < titlebar_height && !cfg!(target_family = "wasm") { |
| 1620 | // Double-clicking the titlebar does maximize/restore. |
| 1621 | if click_count >= 2 { |
| 1622 | window.toggle_maximized(); |
| 1623 | } else if window_state.last_touch_purpose.is_none() { |
| 1624 | // Single-click drag moves the window. Skip for touch events as |
| 1625 | // drag_window doesn't work properly with touch input on Windows. |
| 1626 | // We won't receive MouseInput::Released after drag_window. |
| 1627 | match winit_window.drag_window() { |
| 1628 | Ok(_) => window_state.current_mouse_button_pressed = None, |
| 1629 | Err(err) => log::error!("error dragging window: {err:?}"), |
| 1630 | } |
| 1631 | } |
| 1632 | } |
| 1633 | } |
| 1634 | } |
| 1635 | |
| 1636 | // On mobile WASM, update soft keyboard state based on touch/click events. |
| 1637 | // This must happen synchronously within the touch event handler (user gesture context) |
| 1638 | // for the browser to allow focusing the hidden input element. |
| 1639 | // |
| 1640 | // For touch events, we defer keyboard updates until LeftMouseUp to avoid showing |
| 1641 | // the keyboard during drags/scrolls (which start with LeftMouseDown but later get |
| 1642 | // reclassified as scroll gestures). We only trigger the keyboard if the touch purpose |
| 1643 | // is still Tap (meaning it was never reclassified to Scroll, Select, or WindowDrag). |
| 1644 | #[cfg(target_family = "wasm")] |
| 1645 | { |
| 1646 | // First, check what kind of event we have without holding a mutable borrow. |
| 1647 | let touch_info = self.state.windows.get(&window_id).and_then(|ws| { |
| 1648 | ws.last_touch_purpose.as_ref().map(|purpose| { |
| 1649 | // Check if this is still a tap (not a scroll/drag/select) |
| 1650 | matches!(purpose, TouchPurpose::Tap(..)) |
| 1651 | }) |
| 1652 | }); |
| 1653 | |
| 1654 | match (&event, touch_info) { |
| 1655 | // Regular mouse click (not touch) - update keyboard immediately. |
| 1656 | (crate::event::Event::LeftMouseDown { .. }, None) => { |
| 1657 | self.update_soft_keyboard_state(dispatch_result.soft_keyboard_requested); |
| 1658 | } |
| 1659 | // Touch LeftMouseDown - store keyboard request for later use on LeftMouseUp. |
| 1660 | (crate::event::Event::LeftMouseDown { .. }, Some(_)) => { |
| 1661 | if let Some(ws) = self.state.windows.get_mut(&window_id) { |
| 1662 | ws.pending_soft_keyboard_request = dispatch_result.soft_keyboard_requested; |
| 1663 | } |
| 1664 | } |
| 1665 | // Touch tap completed and purpose is still Tap - use stored keyboard request. |
| 1666 | (crate::event::Event::LeftMouseUp { .. }, Some(true)) => { |
| 1667 | let should_show = self |
| 1668 | .state |
| 1669 | .windows |
| 1670 | .get(&window_id) |
| 1671 | .map(|ws| ws.pending_soft_keyboard_request) |
| 1672 | .unwrap_or(false); |
| 1673 | self.update_soft_keyboard_state(should_show); |
| 1674 | } |
| 1675 | _ => {} |
| 1676 | }; |
| 1677 | } |
| 1678 | |
| 1679 | // On LeftMouseUp: clear touch state and start momentum scrolling if applicable. |
| 1680 | if matches!(event, crate::event::Event::LeftMouseUp { .. }) { |
| 1681 | let should_start_momentum = self |
| 1682 | .state |
| 1683 | .windows |
| 1684 | .get_mut(&window_id) |
| 1685 | .and_then(|window_state| { |
| 1686 | let purpose = window_state.last_touch_purpose.take()?; |
| 1687 | |
| 1688 | if !matches!(purpose, TouchPurpose::Scroll(_)) { |
| 1689 | return None; |
| 1690 | } |
| 1691 | |
| 1692 | window_state.last_mouse_button_pressed = None; |
| 1693 | |
| 1694 | let scroll_vel = window_state.scroll_velocity.as_mut()?; |
| 1695 | // Clamp velocity to prevent excessively fast momentum scrolling |
| 1696 | // from quick flick gestures or batched touch events that produce |
| 1697 | // artificially large velocity spikes. |
| 1698 | scroll_vel.velocity = vec2f( |
| 1699 | scroll_vel |
| 1700 | .velocity |
| 1701 | .x() |
| 1702 | .clamp(-MOMENTUM_MAX_VELOCITY, MOMENTUM_MAX_VELOCITY), |
| 1703 | scroll_vel |
| 1704 | .velocity |
| 1705 | .y() |
| 1706 | .clamp(-MOMENTUM_MAX_VELOCITY, MOMENTUM_MAX_VELOCITY), |
| 1707 | ); |
| 1708 | (scroll_vel.velocity.length() >= MOMENTUM_THRESHOLD).then_some(()) |
| 1709 | }) |
| 1710 | .is_some(); |
| 1711 | |
| 1712 | if should_start_momentum { |
| 1713 | let abort_handle = self.start_momentum_scroll(window_id); |
| 1714 | |
| 1715 | if let Some(ws) = self.state.windows.get_mut(&window_id) { |
| 1716 | ws.momentum_scroll_abort = Some(abort_handle); |
| 1717 | } |
| 1718 | } |
| 1719 | } |
| 1720 | } |
| 1721 | |
| 1722 | fn handle_clipboard_event(&mut self, clipboard_event: ClipboardEvent) { |
| 1723 | let Some(active_window_id) = self.ui_app.read(|ctx| ctx.windows().active_window()) else { |
| 1724 | return; |
| 1725 | }; |
| 1726 | |
| 1727 | match clipboard_event { |
| 1728 | #[allow(unused_variables)] |
| 1729 | ClipboardEvent::Paste(content) => { |
| 1730 | cfg_if::cfg_if! { |
| 1731 | if #[cfg(target_family = "wasm")] { |
| 1732 | self.ui_app.update(|ctx| { |
| 1733 | ctx.clipboard().save(content); |
| 1734 | }) |
| 1735 | } |
| 1736 | } |
| 1737 | self.ui_app |
| 1738 | .dispatch_standard_action(active_window_id, StandardAction::Paste); |
| 1739 | } |
| 1740 | } |
| 1741 | } |
| 1742 | |
| 1743 | /// Starts a timer that triggers MomentumScroll events at a fixed interval. |
| 1744 | fn start_momentum_scroll(&self, window_id: winit::window::WindowId) -> AbortHandle { |
| 1745 | let proxy = self.proxy.clone(); |
| 1746 | // Use abortable future so we can cancel momentum scrolling when the user touches the screen. |
| 1747 | // Aborting is expected since we cancelled the animation, so we can safely discard it. |
| 1748 | let (future, abort_handle) = futures::future::abortable(async move { |
| 1749 | loop { |
| 1750 | Timer::after(MOMENTUM_FRAME_INTERVAL).await; |
| 1751 | let _ = proxy.send_event(CustomEvent::MomentumScroll { window_id }); |
| 1752 | } |
| 1753 | }); |
| 1754 | |
| 1755 | self.ui_app.read(|ctx| { |
| 1756 | ctx.foreground_executor() |
| 1757 | .spawn(async move { |
| 1758 | let _ = future.await; |
| 1759 | }) |
| 1760 | .detach(); |
| 1761 | }); |
| 1762 | |
| 1763 | abort_handle |
| 1764 | } |
| 1765 | |
| 1766 | fn update_ime_position(&mut self) { |
| 1767 | let Some(active_window_id) = self.ui_app.read(|ctx| ctx.windows().active_window()) else { |
| 1768 | return; |
| 1769 | }; |
| 1770 | let Some(window) = self |
| 1771 | .ui_app |
| 1772 | .update(|ctx| ctx.windows().platform_window(active_window_id)) |
| 1773 | else { |
| 1774 | return; |
| 1775 | }; |
| 1776 | |
| 1777 | let mut window_callbacks = self.callbacks.for_window(window.as_ref()); |
| 1778 | let active_cursor_position = window_callbacks.get_active_cursor_position(); |
| 1779 | if let Some(active_cursor_position) = active_cursor_position { |
| 1780 | let winit_window = downcast_window(window.as_ref()); |
| 1781 | let position = LogicalPosition::new( |
| 1782 | active_cursor_position.position.origin_x(), |
| 1783 | active_cursor_position.position.origin_y() |
| 1784 | + (1.2 * active_cursor_position.font_size), |
| 1785 | ); |
| 1786 | // Currently the size argument is not supported on X11. We calculate it here anyway. |
| 1787 | let size = LogicalSize::new( |
| 1788 | active_cursor_position.font_size, |
| 1789 | active_cursor_position.font_size, |
| 1790 | ); |
| 1791 | // TODO(abhishek): We make sure that the position is different than last time to prevent winit from |
| 1792 | // caching the old position and not properly updating on `WindowMoved` or `WindowResized` events. |
| 1793 | winit_window.set_ime_position(LogicalPosition::new(position.x, position.y + 1.), size); |
| 1794 | winit_window.set_ime_position(position, size); |
| 1795 | } |
| 1796 | } |
| 1797 | |
| 1798 | /// Prepares for an impending system suspend/sleep on Linux. |
| 1799 | /// |
| 1800 | /// When using a dedicated GPU, the kernel sometimes disables the device |
| 1801 | /// during system suspend. When this happens, wgpu treats the device as |
| 1802 | /// "lost", which currently produces an unavoidable panic the next time |
| 1803 | /// it is accessed. |
| 1804 | /// |
| 1805 | /// To work around this, we drop all rendering resources pre-suspend, and |
| 1806 | /// re-create them post-resume. |
| 1807 | #[cfg(target_os = "linux")] |
| 1808 | fn prepare_for_sleep_on_linux(&mut self, window_target: &ActiveEventLoop) { |
| 1809 | self.ui_app.update(|ctx| { |
| 1810 | for window_id in ctx.window_ids() { |
| 1811 | let Some(window) = ctx.windows().platform_window(window_id) else { |
| 1812 | return; |
| 1813 | }; |
| 1814 | |
| 1815 | let winit_window = downcast_window(window.as_ref()); |
| 1816 | winit_window.drop_renderer(Box::new(window_target.owned_display_handle())); |
| 1817 | } |
| 1818 | }); |
| 1819 | } |
| 1820 | |
| 1821 | /// Resumes from system suspend/sleep on Linux. |
| 1822 | /// |
| 1823 | /// See the [`Self::prepare_for_sleep_on_linux`] documentation for more |
| 1824 | /// details. |
| 1825 | #[cfg(target_os = "linux")] |
| 1826 | fn resume_from_sleep_on_linux(&mut self) { |
| 1827 | self.ui_app.update(|ctx| { |
| 1828 | for window_id in ctx.window_ids() { |
| 1829 | let Some(window) = ctx.windows().platform_window(window_id) else { |
| 1830 | return; |
| 1831 | }; |
| 1832 | |
| 1833 | let winit_window = downcast_window(window.as_ref()); |
| 1834 | winit_window.recreate_renderer(self.downrank_non_nvidia_vulkan_adapters); |
| 1835 | } |
| 1836 | }); |
| 1837 | } |
| 1838 | |
| 1839 | /// Initializes the soft keyboard manager on mobile WASM devices. |
| 1840 | /// |
| 1841 | /// This creates the hidden input element that triggers the soft keyboard |
| 1842 | /// when focused. The manager is only created on mobile devices. |
| 1843 | #[cfg(target_family = "wasm")] |
| 1844 | fn initialize_soft_keyboard(&mut self) { |
| 1845 | use crate::platform::wasm::{is_mobile_device, SoftKeyboardInput, SoftKeyboardManager}; |
| 1846 | |
| 1847 | if !is_mobile_device() { |
| 1848 | log::info!("Not a mobile device, skipping soft keyboard initialization"); |
| 1849 | return; |
| 1850 | } |
| 1851 | |
| 1852 | log::info!("Initializing soft keyboard for mobile WASM"); |
| 1853 | |
| 1854 | // Create a callback that handles soft keyboard input events. |
| 1855 | // These are forwarded to the event loop via CustomEvent, where they |
| 1856 | // will be dispatched to the active window as TypedCharacters/IME events. |
| 1857 | let proxy = self.proxy.clone(); |
| 1858 | let on_input = Box::new(move |input: SoftKeyboardInput| { |
| 1859 | log::debug!("Soft keyboard callback received input: {:?}", input); |
| 1860 | if let Err(e) = proxy.send_event(CustomEvent::SoftKeyboardInput(input)) { |
| 1861 | log::error!("Failed to send SoftKeyboardInput event: {:?}", e); |
| 1862 | } |
| 1863 | }); |
| 1864 | |
| 1865 | match SoftKeyboardManager::new(on_input) { |
| 1866 | Ok(manager) => { |
| 1867 | log::info!("Soft keyboard manager initialized successfully"); |
| 1868 | self.soft_keyboard_manager = Some(manager); |
| 1869 | } |
| 1870 | Err(err) => { |
| 1871 | log::error!("Failed to initialize soft keyboard manager: {:?}", err); |
| 1872 | } |
| 1873 | } |
| 1874 | } |
| 1875 | |
| 1876 | /// Updates the soft keyboard visibility based on the dispatch result. |
| 1877 | /// |
| 1878 | /// This is called after processing touch events, while still in user gesture context. |
| 1879 | /// Since everything renders to a canvas, the browser can't detect taps "outside" the |
| 1880 | /// keyboard input, so we must explicitly show/hide based on what the app requested. |
| 1881 | #[cfg(target_family = "wasm")] |
| 1882 | fn update_soft_keyboard_state(&mut self, requested: bool) { |
| 1883 | let Some(manager) = &self.soft_keyboard_manager else { |
| 1884 | return; |
| 1885 | }; |
| 1886 | |
| 1887 | if requested { |
| 1888 | log::debug!("App requested soft keyboard, showing it"); |
| 1889 | manager.show_keyboard(); |
| 1890 | } else { |
| 1891 | log::debug!("App did not request soft keyboard, hiding it"); |
| 1892 | manager.hide_keyboard(); |
| 1893 | } |
| 1894 | } |
| 1895 | |
| 1896 | /// Attempts to refocus the main canvas element. |
| 1897 | /// |
| 1898 | /// This is needed to restore app interactivity after the soft keyboard is dismissed, |
| 1899 | /// particularly on iOS Safari which can leave the app in a "blurred" state. |
| 1900 | /// |
| 1901 | /// We defer the focus to the next frame using setTimeout(0) because calling focus() |
| 1902 | /// synchronously during event processing may not work reliably on iOS Safari. |
| 1903 | #[cfg(target_family = "wasm")] |
| 1904 | fn refocus_canvas() { |
| 1905 | use wasm_bindgen::{prelude::Closure, JsCast}; |
| 1906 | |
| 1907 | // Defer focus to next frame to ensure we're outside the current event processing. |
| 1908 | let callback = Closure::once(Box::new(|| { |
| 1909 | if let Some(canvas) = gloo::utils::document() |
| 1910 | .query_selector("canvas") |
| 1911 | .ok() |
| 1912 | .flatten() |
| 1913 | { |
| 1914 | if let Ok(html_element) = canvas.dyn_into::<web_sys::HtmlElement>() { |
| 1915 | let _ = html_element.focus(); |
| 1916 | } |
| 1917 | } |
| 1918 | }) as Box<dyn FnOnce()>); |
| 1919 | |
| 1920 | let _ = gloo::utils::window().set_timeout_with_callback(callback.as_ref().unchecked_ref()); |
| 1921 | // Prevent the closure from being dropped immediately |
| 1922 | callback.forget(); |
| 1923 | } |
| 1924 | |
| 1925 | /// Handles input events from the soft keyboard on mobile WASM. |
| 1926 | /// |
| 1927 | /// Converts `SoftKeyboardInput` events into strato_ui `Event`s and dispatches |
| 1928 | /// them to the active window, similar to how `handle_ime_event` works. |
| 1929 | #[cfg(target_family = "wasm")] |
| 1930 | fn handle_soft_keyboard_input(&mut self, input: crate::platform::wasm::SoftKeyboardInput) { |
| 1931 | use crate::platform::wasm::SoftKeyboardInput; |
| 1932 | |
| 1933 | // On WASM, get the first (and typically only) window if there's no "active" window |
| 1934 | let window_id = self.ui_app.read(|ctx| { |
| 1935 | ctx.windows() |
| 1936 | .active_window() |
| 1937 | .or_else(|| ctx.window_ids().next()) |
| 1938 | }); |
| 1939 | |
| 1940 | let Some(window_id) = window_id else { |
| 1941 | log::debug!("No window for soft keyboard input"); |
| 1942 | return; |
| 1943 | }; |
| 1944 | let Some(window) = self |
| 1945 | .ui_app |
| 1946 | .read(|ctx| ctx.windows().platform_window(window_id)) |
| 1947 | else { |
| 1948 | log::debug!("Could not get platform window for soft keyboard input"); |
| 1949 | return; |
| 1950 | }; |
| 1951 | |
| 1952 | let mut window_callbacks = self.callbacks.for_window(window.as_ref()); |
| 1953 | |
| 1954 | match input { |
| 1955 | SoftKeyboardInput::TextInserted(text) => { |
| 1956 | window_callbacks.dispatch_event(TypedCharacters { chars: text }); |
| 1957 | } |
| 1958 | SoftKeyboardInput::Backspace => { |
| 1959 | window_callbacks.dispatch_event(crate::Event::KeyDown { |
| 1960 | keystroke: crate::keymap::Keystroke { |
| 1961 | ctrl: false, |
| 1962 | alt: false, |
| 1963 | shift: false, |
| 1964 | cmd: false, |
| 1965 | meta: false, |
| 1966 | key: "backspace".to_string(), |
| 1967 | }, |
| 1968 | chars: String::new(), |
| 1969 | details: crate::event::KeyEventDetails::default(), |
| 1970 | is_composing: false, |
| 1971 | }); |
| 1972 | } |
| 1973 | SoftKeyboardInput::KeyboardDismissed => { |
| 1974 | // The keyboard was dismissed (user tapped elsewhere or pressed "Done"). |
| 1975 | // Refocus the canvas to restore interactivity. |
| 1976 | log::debug!("Soft keyboard was dismissed, refocusing canvas"); |
| 1977 | Self::refocus_canvas(); |
| 1978 | } |
| 1979 | SoftKeyboardInput::KeyDown(key) => { |
| 1980 | // Map special key names to their control characters (e.g., Enter → "\r") |
| 1981 | // so the terminal's key_down handler can process them. |
| 1982 | let chars = match key.to_lowercase().as_str() { |
| 1983 | "enter" => "\r".to_string(), |
| 1984 | _ => String::new(), |
| 1985 | }; |
| 1986 | window_callbacks.dispatch_event(crate::Event::KeyDown { |
| 1987 | keystroke: crate::keymap::Keystroke { |
| 1988 | ctrl: false, |
| 1989 | alt: false, |
| 1990 | shift: false, |
| 1991 | cmd: false, |
| 1992 | meta: false, |
| 1993 | key: key.to_lowercase(), |
| 1994 | }, |
| 1995 | chars, |
| 1996 | details: crate::event::KeyEventDetails::default(), |
| 1997 | is_composing: false, |
| 1998 | }); |
| 1999 | } |
| 2000 | } |
| 2001 | } |
| 2002 | |
| 2003 | /// Resizes container when visual viewport changes (e.g., soft keyboard appears). |
| 2004 | #[cfg(target_family = "wasm")] |
| 2005 | fn handle_visual_viewport_resize(&mut self, _width: f32, height: f32) { |
| 2006 | log::debug!("Visual viewport resized, height = {}px", height); |
| 2007 | |
| 2008 | if let Some(container) = gloo::utils::document().get_element_by_id("wasm-container") { |
| 2009 | if let Some(html_element) = container.dyn_ref::<web_sys::HtmlElement>() { |
| 2010 | let _ = html_element |
| 2011 | .style() |
| 2012 | .set_property("height", &format!("{}px", height)); |
| 2013 | } |
| 2014 | } |
| 2015 | } |
| 2016 | } |
| 2017 | |
| 2018 | /// Set of possible UI-framework events that have been converted from a [`winit::event::Event`]. |
| 2019 | #[derive(Debug)] |
| 2020 | enum ConvertedEvent { |
| 2021 | Event(crate::Event), |
| 2022 | /// A keydown event with the actual text of keydown event. We separate the characters from the |
| 2023 | /// underlying event so that we can produce a `TypedCharacters` event if the initial `event` is |
| 2024 | /// not handled by the UI framework. |
| 2025 | KeyDownWithTypedCharacters { |
| 2026 | chars: Option<String>, |
| 2027 | event: crate::Event, |
| 2028 | }, |
| 2029 | Resize, |
| 2030 | WindowMoved { |
| 2031 | new_position: PhysicalPosition<i32>, |
| 2032 | }, |
| 2033 | ModifierKeyChanged { |
| 2034 | key_code: crate::platform::keyboard::KeyCode, |
| 2035 | state: ElementState, |
| 2036 | }, |
| 2037 | /// Move the window for touch-based window dragging. |
| 2038 | MoveWindowBy { |
| 2039 | /// Current touch position (window-relative). |
| 2040 | current_touch: PhysicalPosition<f64>, |
| 2041 | /// Touch position when drag started (window-relative). |
| 2042 | start_touch: PhysicalPosition<f64>, |
| 2043 | }, |
| 2044 | } |
| 2045 | |
| 2046 | /// Convert the platform-independent trait object Window into a concrete, platform-specific Window. |
| 2047 | fn downcast_window(window: &dyn platform::Window) -> &super::Window { |
| 2048 | window |
| 2049 | .as_any() |
| 2050 | .downcast_ref::<super::Window>() |
| 2051 | .expect("Should not fail to downcast the platform window to its concrete type") |
| 2052 | } |
| 2053 |