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flutter_windows_engine.h
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1 // Copyright 2013 The Flutter Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
4
5 #ifndef FLUTTER_SHELL_PLATFORM_WINDOWS_FLUTTER_WINDOWS_ENGINE_H_
6 #define FLUTTER_SHELL_PLATFORM_WINDOWS_FLUTTER_WINDOWS_ENGINE_H_
7
8 #include <chrono>
9 #include <map>
10 #include <memory>
11 #include <optional>
12 #include <shared_mutex>
13 #include <string>
14 #include <string_view>
15 #include <unordered_map>
16 #include <vector>
17
18 #include "flutter/fml/closure.h"
19 #include "flutter/fml/macros.h"
20 #include "flutter/shell/platform/common/accessibility_bridge.h"
21 #include "flutter/shell/platform/common/app_lifecycle_state.h"
22 #include "flutter/shell/platform/common/client_wrapper/binary_messenger_impl.h"
23 #include "flutter/shell/platform/common/client_wrapper/include/flutter/basic_message_channel.h"
24 #include "flutter/shell/platform/common/incoming_message_dispatcher.h"
25 #include "flutter/shell/platform/embedder/embedder.h"
26 #include "flutter/shell/platform/windows/accessibility_bridge_windows.h"
27 #include "flutter/shell/platform/windows/accessibility_plugin.h"
28 #include "flutter/shell/platform/windows/compositor.h"
29 #include "flutter/shell/platform/windows/cursor_handler.h"
30 #include "flutter/shell/platform/windows/egl/manager.h"
31 #include "flutter/shell/platform/windows/egl/proc_table.h"
32 #include "flutter/shell/platform/windows/flutter_desktop_messenger.h"
33 #include "flutter/shell/platform/windows/flutter_project_bundle.h"
34 #include "flutter/shell/platform/windows/flutter_windows_texture_registrar.h"
35 #include "flutter/shell/platform/windows/host_window.h"
36 #include "flutter/shell/platform/windows/keyboard_handler_base.h"
37 #include "flutter/shell/platform/windows/keyboard_key_embedder_handler.h"
38 #include "flutter/shell/platform/windows/platform_handler.h"
39 #include "flutter/shell/platform/windows/platform_view_plugin.h"
40 #include "flutter/shell/platform/windows/public/flutter_windows.h"
41 #include "flutter/shell/platform/windows/settings_plugin.h"
42 #include "flutter/shell/platform/windows/task_runner.h"
43 #include "flutter/shell/platform/windows/text_input_plugin.h"
44 #include "flutter/shell/platform/windows/window_proc_delegate_manager.h"
45 #include "flutter/shell/platform/windows/window_state.h"
46 #include "flutter/shell/platform/windows/windows_lifecycle_manager.h"
47 #include "flutter/shell/platform/windows/windows_proc_table.h"
48 #include "third_party/rapidjson/include/rapidjson/document.h"
49
50 namespace flutter {
51
52 // The implicit view's ID.
53 //
54 // See:
55 // https://api.flutter.dev/flutter/dart-ui/PlatformDispatcher/implicitView.html
56 constexpr FlutterViewId kImplicitViewId = 0;
57
58 class FlutterWindowsView;
59 class DisplayManagerWin32;
60
61 // Update the thread priority for the Windows engine.
62 static void WindowsPlatformThreadPrioritySetter(
63 FlutterThreadPriority priority) {
64 // TODO(99502): Add support for tracing to the windows embedding so we can
65 // mark thread priorities and success/failure.
66 switch (priority) {
67 case FlutterThreadPriority::kBackground: {
68 SetThreadPriority(GetCurrentThread(), THREAD_PRIORITY_BELOW_NORMAL);
69 break;
70 }
71 case FlutterThreadPriority::kDisplay: {
72 SetThreadPriority(GetCurrentThread(), THREAD_PRIORITY_ABOVE_NORMAL);
73 break;
74 }
75 case FlutterThreadPriority::kRaster: {
76 SetThreadPriority(GetCurrentThread(), THREAD_PRIORITY_ABOVE_NORMAL);
77 break;
78 }
79 case FlutterThreadPriority::kNormal: {
80 // For normal or default priority we do not need to set the priority
81 // class.
82 break;
83 }
84 }
85 }
86
87 // Manages state associated with the underlying FlutterEngine that isn't
88 // related to its display.
89 //
90 // In most cases this will be associated with a FlutterView, but if not will
91 // run in headless mode.
92 class FlutterWindowsEngine {
93 public:
94 // Creates a new Flutter engine object configured to run |project|.
95 FlutterWindowsEngine(
96 const FlutterProjectBundle& project,
97 std::shared_ptr<WindowsProcTable> windows_proc_table = nullptr);
98
99 virtual ~FlutterWindowsEngine();
100
101 // Returns the engine associated with the given identifier.
102 // The engine_id must be valid and for a running engine, otherwise
103 // the behavior is undefined.
104 // Must be called on the platform thread.
105 static FlutterWindowsEngine* GetEngineForId(int64_t engine_id);
106
107 // Starts running the entrypoint function specifed in the project bundle. If
108 // unspecified, defaults to main().
109 //
110 // Returns false if the engine couldn't be started.
111 bool Run();
112
113 // Starts running the engine with the given entrypoint. If the empty string
114 // is specified, defaults to the entrypoint function specified in the project
115 // bundle, or main() if both are unspecified.
116 //
117 // Returns false if the engine couldn't be started or if conflicting,
118 // non-default values are passed here and in the project bundle..
119 //
120 // DEPRECATED: Prefer setting the entrypoint in the FlutterProjectBundle
121 // passed to the constructor and calling the no-parameter overload.
122 bool Run(std::string_view entrypoint);
123
124 // Returns true if the engine is currently running.
125 virtual bool running() const { return engine_ != nullptr; }
126
127 // Stops the engine. This invalidates the pointer returned by engine().
128 //
129 // Returns false if stopping the engine fails, or if it was not running.
130 virtual bool Stop();
131
132 // Create a view that can display this engine's content.
133 //
134 // Returns null on failure.
135 std::unique_ptr<FlutterWindowsView> CreateView(
136 std::unique_ptr<WindowBindingHandler> window);
137
138 // Remove a view. The engine will no longer render into it.
139 virtual void RemoveView(FlutterViewId view_id);
140
141 // Get a view that displays this engine's content.
142 //
143 // Returns null if the view does not exist.
144 FlutterWindowsView* view(FlutterViewId view_id) const;
145
146 // Returns the currently configured Plugin Registrar.
147 FlutterDesktopPluginRegistrarRef GetRegistrar();
148
149 // Registers |callback| to be called when the plugin registrar is destroyed.
150 void AddPluginRegistrarDestructionCallback(
151 FlutterDesktopOnPluginRegistrarDestroyed callback,
152 FlutterDesktopPluginRegistrarRef registrar);
153
154 // Sets switches member to the given switches.
155 void SetSwitches(const std::vector<std::string>& switches);
156
157 FlutterDesktopMessengerRef messenger() { return messenger_->ToRef(); }
158
159 IncomingMessageDispatcher* message_dispatcher() {
160 return message_dispatcher_.get();
161 }
162
163 std::shared_ptr<DisplayManagerWin32> display_manager() {
164 return display_manager_;
165 }
166
167 // Notifies the engine about a display update.
168 void UpdateDisplay(const std::vector<FlutterEngineDisplay>& displays);
169
170 TaskRunner* task_runner() { return task_runner_.get(); }
171
172 BinaryMessenger* messenger_wrapper() { return messenger_wrapper_.get(); }
173
174 FlutterWindowsTextureRegistrar* texture_registrar() {
175 return texture_registrar_.get();
176 }
177
178 // The EGL manager object. If this is nullptr, then we are
179 // rendering using software instead of OpenGL.
180 egl::Manager* egl_manager() const { return egl_manager_.get(); }
181
182 WindowProcDelegateManager* window_proc_delegate_manager() {
183 return window_proc_delegate_manager_.get();
184 }
185
186 // Informs the engine that the window metrics have changed.
187 void SendWindowMetricsEvent(const FlutterWindowMetricsEvent& event);
188
189 // Informs the engine of an incoming pointer event.
190 void SendPointerEvent(const FlutterPointerEvent& event);
191
192 // Informs the engine of an incoming key event.
193 void SendKeyEvent(const FlutterKeyEvent& event,
194 FlutterKeyEventCallback callback,
195 void* user_data);
196
197 // Informs the engine of an incoming focus event.
198 void SendViewFocusEvent(const FlutterViewFocusEvent& event);
199
200 KeyboardHandlerBase* keyboard_key_handler() {
201 return keyboard_key_handler_.get();
202 }
203 TextInputPlugin* text_input_plugin() { return text_input_plugin_.get(); }
204
205 // Sends the given message to the engine, calling |reply| with |user_data|
206 // when a response is received from the engine if they are non-null.
207 bool SendPlatformMessage(const char* channel,
208 const uint8_t* message,
209 const size_t message_size,
210 const FlutterDesktopBinaryReply reply,
211 void* user_data);
212
213 // Sends the given data as the response to an earlier platform message.
214 void SendPlatformMessageResponse(
215 const FlutterDesktopMessageResponseHandle* handle,
216 const uint8_t* data,
217 size_t data_length);
218
219 // Callback passed to Flutter engine for notifying window of platform
220 // messages.
221 void HandlePlatformMessage(const FlutterPlatformMessage*);
222
223 // Informs the engine that the system font list has changed.
224 void ReloadSystemFonts();
225
226 // Informs the engine that a new frame is needed to redraw the content.
227 void ScheduleFrame();
228
229 // Set the callback that is called when the next frame is drawn.
230 void SetNextFrameCallback(fml::closure callback);
231
232 // Attempts to register the texture with the given |texture_id|.
233 bool RegisterExternalTexture(int64_t texture_id);
234
235 // Attempts to unregister the texture with the given |texture_id|.
236 bool UnregisterExternalTexture(int64_t texture_id);
237
238 // Notifies the engine about a new frame being available for the
239 // given |texture_id|.
240 bool MarkExternalTextureFrameAvailable(int64_t texture_id);
241
242 // Posts the given callback onto the raster thread.
243 virtual bool PostRasterThreadTask(fml::closure callback) const;
244
245 // Invoke on the embedder's vsync callback to schedule a frame.
246 void OnVsync(intptr_t baton);
247
248 // Dispatches a semantics action to the specified semantics node.
249 bool DispatchSemanticsAction(FlutterViewId view_id,
250 uint64_t node_id,
251 FlutterSemanticsAction action,
252 fml::MallocMapping data);
253
254 // Informs the engine that the semantics enabled state has changed.
255 void UpdateSemanticsEnabled(bool enabled);
256
257 // Returns true if the semantics tree is enabled.
258 bool semantics_enabled() const { return semantics_enabled_; }
259
260 // Refresh accessibility features and send them to the engine.
261 void UpdateAccessibilityFeatures();
262
263 // Refresh high contrast accessibility mode and notify the engine.
264 void UpdateHighContrastMode();
265
266 // Returns true if the high contrast feature is enabled.
267 bool high_contrast_enabled() const { return high_contrast_enabled_; }
268
269 // Register a root isolate create callback.
270 //
271 // The root isolate create callback is invoked at creation of the root Dart
272 // isolate in the app. This may be used to be notified that execution of the
273 // main Dart entrypoint is about to begin, and is used by test infrastructure
274 // to register a native function resolver that can register and resolve
275 // functions marked as native in the Dart code.
276 //
277 // This must be called before calling |Run|.
278 void SetRootIsolateCreateCallback(const fml::closure& callback) {
279 root_isolate_create_callback_ = callback;
280 }
281
282 // Returns the executable name for this process or "Flutter" if unknown.
283 std::string GetExecutableName() const;
284
285 // Called when the application quits in response to a quit request.
286 void OnQuit(std::optional<HWND> hwnd,
287 std::optional<WPARAM> wparam,
288 std::optional<LPARAM> lparam,
289 UINT exit_code);
290
291 // Called when a WM_CLOSE message is received.
292 void RequestApplicationQuit(HWND hwnd,
293 WPARAM wparam,
294 LPARAM lparam,
295 AppExitType exit_type);
296
297 // Called when a WM_DWMCOMPOSITIONCHANGED message is received.
298 void OnDwmCompositionChanged();
299
300 // Called when a Window receives an event that may alter the application
301 // lifecycle state.
302 void OnWindowStateEvent(HWND hwnd, WindowStateEvent event);
303
304 // Handle a message from a non-Flutter window in the same application.
305 // Returns a result when the message is consumed and should not be processed
306 // further.
307 std::optional<LRESULT> ProcessExternalWindowMessage(HWND hwnd,
308 UINT message,
309 WPARAM wparam,
310 LPARAM lparam);
311
312 WindowsLifecycleManager* lifecycle_manager() {
313 return lifecycle_manager_.get();
314 }
315
316 std::shared_ptr<WindowsProcTable> windows_proc_table() {
317 return windows_proc_table_;
318 }
319
320 // Sets the cursor that should be used when the mouse is over the Flutter
321 // content. See mouse_cursor.dart for the values and meanings of cursor_name.
322 void UpdateFlutterCursor(const std::string& cursor_name) const;
323
324 // Sets the cursor directly from a cursor handle.
325 void SetFlutterCursor(HCURSOR cursor) const;
326
327 WindowManager* window_manager() { return window_manager_.get(); }
328
329 // Returns the root view associated with the top-level window with |hwnd| as
330 // the window handle or nullptr if no such view could be found.
331 FlutterWindowsView* GetViewFromTopLevelWindow(HWND hwnd) const;
332
333 protected:
334 // Creates the keyboard key handler.
335 //
336 // Exposing this method allows unit tests to override in order to
337 // capture information.
338 virtual std::unique_ptr<KeyboardHandlerBase> CreateKeyboardKeyHandler(
339 BinaryMessenger* messenger,
340 KeyboardKeyEmbedderHandler::GetKeyStateHandler get_key_state,
341 KeyboardKeyEmbedderHandler::MapVirtualKeyToScanCode map_vk_to_scan);
342
343 // Creates the text input plugin.
344 //
345 // Exposing this method allows unit tests to override in order to
346 // capture information.
347 virtual std::unique_ptr<TextInputPlugin> CreateTextInputPlugin(
348 BinaryMessenger* messenger);
349
350 // Invoked by the engine right before the engine is restarted.
351 //
352 // This should reset necessary states to as if the engine has just been
353 // created. This is typically caused by a hot restart (Shift-R in CLI.)
354 void OnPreEngineRestart();
355
356 // Invoked by the engine when a listener is set or cleared on a platform
357 // channel.
358 virtual void OnChannelUpdate(std::string name, bool listening);
359
360 virtual void OnViewFocusChangeRequest(
361 const FlutterViewFocusChangeRequest* request);
362
363 private:
364 // Allows swapping out embedder_api_ calls in tests.
365 friend class EngineModifier;
366
367 // Maps a Flutter cursor name to an HCURSOR.
368 //
369 // Returns the arrow cursor for unknown constants.
370 //
371 // This map must be kept in sync with Flutter framework's
372 // services/mouse_cursor.dart.
373 HCURSOR GetCursorByName(const std::string& cursor_name) const;
374
375 // Sends system locales to the engine.
376 //
377 // Should be called just after the engine is run, and after any relevant
378 // system changes.
379 void SendSystemLocales();
380
381 // Create the keyboard & text input sub-systems.
382 //
383 // This requires that a view is attached to the engine.
384 // Calling this method again resets the keyboard state.
385 void InitializeKeyboard();
386
387 // Send the currently enabled accessibility features to the engine.
388 void SendAccessibilityFeatures();
389
390 // Present content to a view. Returns true if the content was presented.
391 //
392 // This is invoked on the raster thread.
393 bool Present(const FlutterPresentViewInfo* info);
394
395 // The handle to the embedder.h engine instance.
396 FLUTTER_API_SYMBOL(FlutterEngine) engine_ = nullptr;
397
398 FlutterEngineProcTable embedder_api_ = {};
399
400 std::unique_ptr<FlutterProjectBundle> project_;
401
402 // AOT data, if any.
403 UniqueAotDataPtr aot_data_;
404
405 // The ID that the next view will have.
406 FlutterViewId next_view_id_ = kImplicitViewId;
407
408 // The views displaying the content running in this engine, if any.
409 //
410 // This is read and mutated by the platform thread. This is read by the raster
411 // thread to present content to a view.
412 //
413 // Reads to this object on non-platform threads must be protected
414 // by acquiring a shared lock on |views_mutex_|.
415 //
416 // Writes to this object must only happen on the platform thread
417 // and must be protected by acquiring an exclusive lock on |views_mutex_|.
418 std::unordered_map<FlutterViewId, FlutterWindowsView*> views_;
419
420 // The mutex that protects the |views_| map.
421 //
422 // The raster thread acquires a shared lock to present to a view.
423 //
424 // The platform thread acquires a shared lock to access the view.
425 // The platform thread acquires an exclusive lock before adding
426 // a view to the engine or after removing a view from the engine.
427 mutable std::shared_mutex views_mutex_;
428
429 // The display monitor.
430 std::shared_ptr<DisplayManagerWin32> display_manager_;
431
432 // Task runner for tasks posted from the engine.
433 std::unique_ptr<TaskRunner> task_runner_;
434
435 // The plugin messenger handle given to API clients.
436 fml::RefPtr<flutter::FlutterDesktopMessenger> messenger_;
437
438 // A wrapper around messenger_ for interacting with client_wrapper-level APIs.
439 std::unique_ptr<BinaryMessengerImpl> messenger_wrapper_;
440
441 // Message dispatch manager for messages from engine_.
442 std::unique_ptr<IncomingMessageDispatcher> message_dispatcher_;
443
444 // The plugin registrar handle given to API clients.
445 std::unique_ptr<FlutterDesktopPluginRegistrar> plugin_registrar_;
446
447 // The texture registrar.
448 std::unique_ptr<FlutterWindowsTextureRegistrar> texture_registrar_;
449
450 // An object used for intializing ANGLE and creating / destroying render
451 // surfaces. If nullptr, ANGLE failed to initialize and software rendering
452 // should be used instead.
453 std::unique_ptr<egl::Manager> egl_manager_;
454
455 // The compositor that creates backing stores for the engine to render into
456 // and then presents them onto views.
457 std::unique_ptr<Compositor> compositor_;
458
459 // The plugin registrar managing internal plugins.
460 std::unique_ptr<PluginRegistrar> internal_plugin_registrar_;
461
462 // Handler for accessibility events.
463 std::unique_ptr<AccessibilityPlugin> accessibility_plugin_;
464
465 // Handler for cursor events.
466 std::unique_ptr<CursorHandler> cursor_handler_;
467
468 // Handler for the flutter/platform channel.
469 std::unique_ptr<PlatformHandler> platform_handler_;
470
471 // Handlers for keyboard events from Windows.
472 std::unique_ptr<KeyboardHandlerBase> keyboard_key_handler_;
473
474 // The manager that manages the lifecycle of |HostWindow|s, native
475 // Win32 windows hosting a Flutter view in their client area.
476 std::unique_ptr<WindowManager> window_manager_;
477
478 // Handlers for text events from Windows.
479 std::unique_ptr<TextInputPlugin> text_input_plugin_;
480
481 // The settings plugin.
482 std::unique_ptr<SettingsPlugin> settings_plugin_;
483
484 // Callbacks to be called when the engine (and thus the plugin registrar) is
485 // being destroyed.
486 std::map<FlutterDesktopOnPluginRegistrarDestroyed,
487 FlutterDesktopPluginRegistrarRef>
488 plugin_registrar_destruction_callbacks_;
489
490 // The approximate time between vblank events.
491 std::chrono::nanoseconds FrameInterval();
492
493 // The start time used to align frames.
494 std::chrono::nanoseconds start_time_ = std::chrono::nanoseconds::zero();
495
496 // An override of the frame interval used by EngineModifier for testing.
497 std::optional<std::chrono::nanoseconds> frame_interval_override_ =
498 std::nullopt;
499
500 bool semantics_enabled_ = false;
501
502 bool high_contrast_enabled_ = false;
503
504 bool enable_impeller_ = false;
505
506 // The manager for WindowProc delegate registration and callbacks.
507 std::unique_ptr<WindowProcDelegateManager> window_proc_delegate_manager_;
508
509 // The root isolate creation callback.
510 fml::closure root_isolate_create_callback_;
511
512 // The on frame drawn callback.
513 fml::closure next_frame_callback_;
514
515 // Handler for top level window messages.
516 std::unique_ptr<WindowsLifecycleManager> lifecycle_manager_;
517
518 std::shared_ptr<WindowsProcTable> windows_proc_table_;
519
520 std::shared_ptr<egl::ProcTable> gl_;
521
522 std::unique_ptr<PlatformViewPlugin> platform_view_plugin_;
523
524 // Handles display-related window messages.
525 bool HandleDisplayMonitorMessage(HWND hwnd,
526 UINT message,
527 WPARAM wparam,
528 LPARAM lparam,
529 LRESULT* result);
530
531 FML_DISALLOW_COPY_AND_ASSIGN(FlutterWindowsEngine);
532 };
533
534 } // namespace flutter
535
536 #endif // FLUTTER_SHELL_PLATFORM_WINDOWS_FLUTTER_WINDOWS_ENGINE_H_
accessibility_bridge.h
accessibility_bridge_windows.h
accessibility_plugin.h
app_lifecycle_state.h
basic_message_channel.h
binary_messenger_impl.h
flutter::BinaryMessenger
Definition: binary_messenger.h:28
flutter::DisplayManagerWin32
Definition: display_manager.h:18
flutter::FlutterEngine
Definition: flutter_engine.h:28
flutter::FlutterProjectBundle
Definition: flutter_project_bundle.h:32
flutter::FlutterWindowsEngine
Definition: flutter_windows_engine.h:92
flutter::FlutterWindowsEngine::texture_registrar
FlutterWindowsTextureRegistrar * texture_registrar()
Definition: flutter_windows_engine.h:174
flutter::FlutterWindowsEngine::UpdateHighContrastMode
void UpdateHighContrastMode()
Definition: flutter_windows_engine.cc:1021
flutter::FlutterWindowsEngine::windows_proc_table
std::shared_ptr< WindowsProcTable > windows_proc_table()
Definition: flutter_windows_engine.h:316
flutter::FlutterWindowsEngine::task_runner
TaskRunner * task_runner()
Definition: flutter_windows_engine.h:170
flutter::FlutterWindowsEngine::FlutterWindowsEngine
FlutterWindowsEngine(const FlutterProjectBundle &project, std::shared_ptr< WindowsProcTable > windows_proc_table=nullptr)
Definition: flutter_windows_engine.cc:151
flutter::FlutterWindowsEngine::UpdateAccessibilityFeatures
void UpdateAccessibilityFeatures()
Definition: flutter_windows_engine.cc:1017
flutter::FlutterWindowsEngine::messenger
FlutterDesktopMessengerRef messenger()
Definition: flutter_windows_engine.h:157
flutter::FlutterWindowsEngine::Run
bool Run()
Definition: flutter_windows_engine.cc:268
flutter::FlutterWindowsEngine::lifecycle_manager
WindowsLifecycleManager * lifecycle_manager()
Definition: flutter_windows_engine.h:312
flutter::FlutterWindowsEngine::OnWindowStateEvent
void OnWindowStateEvent(HWND hwnd, WindowStateEvent event)
Definition: flutter_windows_engine.cc:1065
flutter::FlutterWindowsEngine::OnDwmCompositionChanged
void OnDwmCompositionChanged()
Definition: flutter_windows_engine.cc:1054
flutter::FlutterWindowsEngine::RequestApplicationQuit
void RequestApplicationQuit(HWND hwnd, WPARAM wparam, LPARAM lparam, AppExitType exit_type)
Definition: flutter_windows_engine.cc:1040
flutter::FlutterWindowsEngine::window_proc_delegate_manager
WindowProcDelegateManager * window_proc_delegate_manager()
Definition: flutter_windows_engine.h:182
flutter::FlutterWindowsEngine::view
FlutterWindowsView * view(FlutterViewId view_id) const
Definition: flutter_windows_engine.cc:688
flutter::FlutterWindowsEngine::OnPreEngineRestart
void OnPreEngineRestart()
Definition: flutter_windows_engine.cc:998
flutter::FlutterWindowsEngine::display_manager
std::shared_ptr< DisplayManagerWin32 > display_manager()
Definition: flutter_windows_engine.h:163
flutter::FlutterWindowsEngine::SendViewFocusEvent
void SendViewFocusEvent(const FlutterViewFocusEvent &event)
Definition: flutter_windows_engine.cc:740
flutter::FlutterWindowsEngine::SendPlatformMessage
bool SendPlatformMessage(const char *channel, const uint8_t *message, const size_t message_size, const FlutterDesktopBinaryReply reply, void *user_data)
Definition: flutter_windows_engine.cc:747
flutter::FlutterWindowsEngine::OnViewFocusChangeRequest
virtual void OnViewFocusChangeRequest(const FlutterViewFocusChangeRequest *request)
Definition: flutter_windows_engine.cc:1099
flutter::FlutterWindowsEngine::ProcessExternalWindowMessage
std::optional< LRESULT > ProcessExternalWindowMessage(HWND hwnd, UINT message, WPARAM wparam, LPARAM lparam)
Definition: flutter_windows_engine.cc:1070
flutter::FlutterWindowsEngine::AddPluginRegistrarDestructionCallback
void AddPluginRegistrarDestructionCallback(FlutterDesktopOnPluginRegistrarDestroyed callback, FlutterDesktopPluginRegistrarRef registrar)
Definition: flutter_windows_engine.cc:704
flutter::FlutterWindowsEngine::RegisterExternalTexture
bool RegisterExternalTexture(int64_t texture_id)
Definition: flutter_windows_engine.cc:934
flutter::FlutterWindowsEngine::UpdateDisplay
void UpdateDisplay(const std::vector< FlutterEngineDisplay > &displays)
Definition: flutter_windows_engine.cc:710
flutter::FlutterWindowsEngine::SendPlatformMessageResponse
void SendPlatformMessageResponse(const FlutterDesktopMessageResponseHandle *handle, const uint8_t *data, size_t data_length)
Definition: flutter_windows_engine.cc:781
flutter::FlutterWindowsEngine::SetRootIsolateCreateCallback
void SetRootIsolateCreateCallback(const fml::closure &callback)
Definition: flutter_windows_engine.h:278
flutter::FlutterWindowsEngine::GetEngineForId
static FlutterWindowsEngine * GetEngineForId(int64_t engine_id)
Definition: flutter_windows_engine.cc:259
flutter::FlutterWindowsEngine::UpdateSemanticsEnabled
void UpdateSemanticsEnabled(bool enabled)
Definition: flutter_windows_engine.cc:986
flutter::FlutterWindowsEngine::GetExecutableName
std::string GetExecutableName() const
Definition: flutter_windows_engine.cc:1003
flutter::FlutterWindowsEngine::OnChannelUpdate
virtual void OnChannelUpdate(std::string name, bool listening)
Definition: flutter_windows_engine.cc:1091
flutter::FlutterWindowsEngine::CreateKeyboardKeyHandler
virtual std::unique_ptr< KeyboardHandlerBase > CreateKeyboardKeyHandler(BinaryMessenger *messenger, KeyboardKeyEmbedderHandler::GetKeyStateHandler get_key_state, KeyboardKeyEmbedderHandler::MapVirtualKeyToScanCode map_vk_to_scan)
Definition: flutter_windows_engine.cc:911
flutter::FlutterWindowsEngine::DispatchSemanticsAction
bool DispatchSemanticsAction(FlutterViewId view_id, uint64_t node_id, FlutterSemanticsAction action, fml::MallocMapping data)
Definition: flutter_windows_engine.cc:970
flutter::FlutterWindowsEngine::MarkExternalTextureFrameAvailable
bool MarkExternalTextureFrameAvailable(int64_t texture_id)
Definition: flutter_windows_engine.cc:944
flutter::FlutterWindowsEngine::GetViewFromTopLevelWindow
FlutterWindowsView * GetViewFromTopLevelWindow(HWND hwnd) const
Definition: flutter_windows_engine.cc:864
flutter::FlutterWindowsEngine::keyboard_key_handler
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Definition: flutter_windows_engine.h:200
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