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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 DisplayMonitor;
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 DisplayMonitor* display_monitor() { return display_monitor_.get(); }
164
165 // Notifies the engine about a display update.
166 void UpdateDisplay(const std::vector<FlutterEngineDisplay>& displays);
167
168 TaskRunner* task_runner() { return task_runner_.get(); }
169
170 BinaryMessenger* messenger_wrapper() { return messenger_wrapper_.get(); }
171
172 FlutterWindowsTextureRegistrar* texture_registrar() {
173 return texture_registrar_.get();
174 }
175
176 // The EGL manager object. If this is nullptr, then we are
177 // rendering using software instead of OpenGL.
178 egl::Manager* egl_manager() const { return egl_manager_.get(); }
179
180 WindowProcDelegateManager* window_proc_delegate_manager() {
181 return window_proc_delegate_manager_.get();
182 }
183
184 // Informs the engine that the window metrics have changed.
185 void SendWindowMetricsEvent(const FlutterWindowMetricsEvent& event);
186
187 // Informs the engine of an incoming pointer event.
188 void SendPointerEvent(const FlutterPointerEvent& event);
189
190 // Informs the engine of an incoming key event.
191 void SendKeyEvent(const FlutterKeyEvent& event,
192 FlutterKeyEventCallback callback,
193 void* user_data);
194
195 // Informs the engine of an incoming focus event.
196 void SendViewFocusEvent(const FlutterViewFocusEvent& event);
197
198 KeyboardHandlerBase* keyboard_key_handler() {
199 return keyboard_key_handler_.get();
200 }
201 TextInputPlugin* text_input_plugin() { return text_input_plugin_.get(); }
202
203 // Sends the given message to the engine, calling |reply| with |user_data|
204 // when a response is received from the engine if they are non-null.
205 bool SendPlatformMessage(const char* channel,
206 const uint8_t* message,
207 const size_t message_size,
208 const FlutterDesktopBinaryReply reply,
209 void* user_data);
210
211 // Sends the given data as the response to an earlier platform message.
212 void SendPlatformMessageResponse(
213 const FlutterDesktopMessageResponseHandle* handle,
214 const uint8_t* data,
215 size_t data_length);
216
217 // Callback passed to Flutter engine for notifying window of platform
218 // messages.
219 void HandlePlatformMessage(const FlutterPlatformMessage*);
220
221 // Informs the engine that the system font list has changed.
222 void ReloadSystemFonts();
223
224 // Informs the engine that a new frame is needed to redraw the content.
225 void ScheduleFrame();
226
227 // Set the callback that is called when the next frame is drawn.
228 void SetNextFrameCallback(fml::closure callback);
229
230 // Attempts to register the texture with the given |texture_id|.
231 bool RegisterExternalTexture(int64_t texture_id);
232
233 // Attempts to unregister the texture with the given |texture_id|.
234 bool UnregisterExternalTexture(int64_t texture_id);
235
236 // Notifies the engine about a new frame being available for the
237 // given |texture_id|.
238 bool MarkExternalTextureFrameAvailable(int64_t texture_id);
239
240 // Posts the given callback onto the raster thread.
241 virtual bool PostRasterThreadTask(fml::closure callback) const;
242
243 // Invoke on the embedder's vsync callback to schedule a frame.
244 void OnVsync(intptr_t baton);
245
246 // Dispatches a semantics action to the specified semantics node.
247 bool DispatchSemanticsAction(FlutterViewId view_id,
248 uint64_t node_id,
249 FlutterSemanticsAction action,
250 fml::MallocMapping data);
251
252 // Informs the engine that the semantics enabled state has changed.
253 void UpdateSemanticsEnabled(bool enabled);
254
255 // Returns true if the semantics tree is enabled.
256 bool semantics_enabled() const { return semantics_enabled_; }
257
258 // Refresh accessibility features and send them to the engine.
259 void UpdateAccessibilityFeatures();
260
261 // Refresh high contrast accessibility mode and notify the engine.
262 void UpdateHighContrastMode();
263
264 // Returns true if the high contrast feature is enabled.
265 bool high_contrast_enabled() const { return high_contrast_enabled_; }
266
267 // Register a root isolate create callback.
268 //
269 // The root isolate create callback is invoked at creation of the root Dart
270 // isolate in the app. This may be used to be notified that execution of the
271 // main Dart entrypoint is about to begin, and is used by test infrastructure
272 // to register a native function resolver that can register and resolve
273 // functions marked as native in the Dart code.
274 //
275 // This must be called before calling |Run|.
276 void SetRootIsolateCreateCallback(const fml::closure& callback) {
277 root_isolate_create_callback_ = callback;
278 }
279
280 // Returns the executable name for this process or "Flutter" if unknown.
281 std::string GetExecutableName() const;
282
283 // Called when the application quits in response to a quit request.
284 void OnQuit(std::optional<HWND> hwnd,
285 std::optional<WPARAM> wparam,
286 std::optional<LPARAM> lparam,
287 UINT exit_code);
288
289 // Called when a WM_CLOSE message is received.
290 void RequestApplicationQuit(HWND hwnd,
291 WPARAM wparam,
292 LPARAM lparam,
293 AppExitType exit_type);
294
295 // Called when a WM_DWMCOMPOSITIONCHANGED message is received.
296 void OnDwmCompositionChanged();
297
298 // Called when a Window receives an event that may alter the application
299 // lifecycle state.
300 void OnWindowStateEvent(HWND hwnd, WindowStateEvent event);
301
302 // Handle a message from a non-Flutter window in the same application.
303 // Returns a result when the message is consumed and should not be processed
304 // further.
305 std::optional<LRESULT> ProcessExternalWindowMessage(HWND hwnd,
306 UINT message,
307 WPARAM wparam,
308 LPARAM lparam);
309
310 WindowsLifecycleManager* lifecycle_manager() {
311 return lifecycle_manager_.get();
312 }
313
314 std::shared_ptr<WindowsProcTable> windows_proc_table() {
315 return windows_proc_table_;
316 }
317
318 // Sets the cursor that should be used when the mouse is over the Flutter
319 // content. See mouse_cursor.dart for the values and meanings of cursor_name.
320 void UpdateFlutterCursor(const std::string& cursor_name) const;
321
322 // Sets the cursor directly from a cursor handle.
323 void SetFlutterCursor(HCURSOR cursor) const;
324
325 WindowManager* window_manager() { return window_manager_.get(); }
326
327 // Returns the root view associated with the top-level window with |hwnd| as
328 // the window handle or nullptr if no such view could be found.
329 FlutterWindowsView* GetViewFromTopLevelWindow(HWND hwnd) const;
330
331 protected:
332 // Creates the keyboard key handler.
333 //
334 // Exposing this method allows unit tests to override in order to
335 // capture information.
336 virtual std::unique_ptr<KeyboardHandlerBase> CreateKeyboardKeyHandler(
337 BinaryMessenger* messenger,
338 KeyboardKeyEmbedderHandler::GetKeyStateHandler get_key_state,
339 KeyboardKeyEmbedderHandler::MapVirtualKeyToScanCode map_vk_to_scan);
340
341 // Creates the text input plugin.
342 //
343 // Exposing this method allows unit tests to override in order to
344 // capture information.
345 virtual std::unique_ptr<TextInputPlugin> CreateTextInputPlugin(
346 BinaryMessenger* messenger);
347
348 // Invoked by the engine right before the engine is restarted.
349 //
350 // This should reset necessary states to as if the engine has just been
351 // created. This is typically caused by a hot restart (Shift-R in CLI.)
352 void OnPreEngineRestart();
353
354 // Invoked by the engine when a listener is set or cleared on a platform
355 // channel.
356 virtual void OnChannelUpdate(std::string name, bool listening);
357
358 virtual void OnViewFocusChangeRequest(
359 const FlutterViewFocusChangeRequest* request);
360
361 private:
362 // Allows swapping out embedder_api_ calls in tests.
363 friend class EngineModifier;
364
365 // Maps a Flutter cursor name to an HCURSOR.
366 //
367 // Returns the arrow cursor for unknown constants.
368 //
369 // This map must be kept in sync with Flutter framework's
370 // services/mouse_cursor.dart.
371 HCURSOR GetCursorByName(const std::string& cursor_name) const;
372
373 // Sends system locales to the engine.
374 //
375 // Should be called just after the engine is run, and after any relevant
376 // system changes.
377 void SendSystemLocales();
378
379 // Create the keyboard & text input sub-systems.
380 //
381 // This requires that a view is attached to the engine.
382 // Calling this method again resets the keyboard state.
383 void InitializeKeyboard();
384
385 // Send the currently enabled accessibility features to the engine.
386 void SendAccessibilityFeatures();
387
388 // Present content to a view. Returns true if the content was presented.
389 //
390 // This is invoked on the raster thread.
391 bool Present(const FlutterPresentViewInfo* info);
392
393 // The handle to the embedder.h engine instance.
394 FLUTTER_API_SYMBOL(FlutterEngine) engine_ = nullptr;
395
396 FlutterEngineProcTable embedder_api_ = {};
397
398 std::unique_ptr<FlutterProjectBundle> project_;
399
400 // AOT data, if any.
401 UniqueAotDataPtr aot_data_;
402
403 // The ID that the next view will have.
404 FlutterViewId next_view_id_ = kImplicitViewId;
405
406 // The views displaying the content running in this engine, if any.
407 //
408 // This is read and mutated by the platform thread. This is read by the raster
409 // thread to present content to a view.
410 //
411 // Reads to this object on non-platform threads must be protected
412 // by acquiring a shared lock on |views_mutex_|.
413 //
414 // Writes to this object must only happen on the platform thread
415 // and must be protected by acquiring an exclusive lock on |views_mutex_|.
416 std::unordered_map<FlutterViewId, FlutterWindowsView*> views_;
417
418 // The mutex that protects the |views_| map.
419 //
420 // The raster thread acquires a shared lock to present to a view.
421 //
422 // The platform thread acquires a shared lock to access the view.
423 // The platform thread acquires an exclusive lock before adding
424 // a view to the engine or after removing a view from the engine.
425 mutable std::shared_mutex views_mutex_;
426
427 // The display monitor.
428 std::unique_ptr<DisplayMonitor> display_monitor_;
429
430 // Task runner for tasks posted from the engine.
431 std::unique_ptr<TaskRunner> task_runner_;
432
433 // The plugin messenger handle given to API clients.
434 fml::RefPtr<flutter::FlutterDesktopMessenger> messenger_;
435
436 // A wrapper around messenger_ for interacting with client_wrapper-level APIs.
437 std::unique_ptr<BinaryMessengerImpl> messenger_wrapper_;
438
439 // Message dispatch manager for messages from engine_.
440 std::unique_ptr<IncomingMessageDispatcher> message_dispatcher_;
441
442 // The plugin registrar handle given to API clients.
443 std::unique_ptr<FlutterDesktopPluginRegistrar> plugin_registrar_;
444
445 // The texture registrar.
446 std::unique_ptr<FlutterWindowsTextureRegistrar> texture_registrar_;
447
448 // An object used for intializing ANGLE and creating / destroying render
449 // surfaces. If nullptr, ANGLE failed to initialize and software rendering
450 // should be used instead.
451 std::unique_ptr<egl::Manager> egl_manager_;
452
453 // The compositor that creates backing stores for the engine to render into
454 // and then presents them onto views.
455 std::unique_ptr<Compositor> compositor_;
456
457 // The plugin registrar managing internal plugins.
458 std::unique_ptr<PluginRegistrar> internal_plugin_registrar_;
459
460 // Handler for accessibility events.
461 std::unique_ptr<AccessibilityPlugin> accessibility_plugin_;
462
463 // Handler for cursor events.
464 std::unique_ptr<CursorHandler> cursor_handler_;
465
466 // Handler for the flutter/platform channel.
467 std::unique_ptr<PlatformHandler> platform_handler_;
468
469 // Handlers for keyboard events from Windows.
470 std::unique_ptr<KeyboardHandlerBase> keyboard_key_handler_;
471
472 // The manager that manages the lifecycle of |HostWindow|s, native
473 // Win32 windows hosting a Flutter view in their client area.
474 std::unique_ptr<WindowManager> window_manager_;
475
476 // Handlers for text events from Windows.
477 std::unique_ptr<TextInputPlugin> text_input_plugin_;
478
479 // The settings plugin.
480 std::unique_ptr<SettingsPlugin> settings_plugin_;
481
482 // Callbacks to be called when the engine (and thus the plugin registrar) is
483 // being destroyed.
484 std::map<FlutterDesktopOnPluginRegistrarDestroyed,
485 FlutterDesktopPluginRegistrarRef>
486 plugin_registrar_destruction_callbacks_;
487
488 // The approximate time between vblank events.
489 std::chrono::nanoseconds FrameInterval();
490
491 // The start time used to align frames.
492 std::chrono::nanoseconds start_time_ = std::chrono::nanoseconds::zero();
493
494 // An override of the frame interval used by EngineModifier for testing.
495 std::optional<std::chrono::nanoseconds> frame_interval_override_ =
496 std::nullopt;
497
498 bool semantics_enabled_ = false;
499
500 bool high_contrast_enabled_ = false;
501
502 bool enable_impeller_ = false;
503
504 // The manager for WindowProc delegate registration and callbacks.
505 std::unique_ptr<WindowProcDelegateManager> window_proc_delegate_manager_;
506
507 // The root isolate creation callback.
508 fml::closure root_isolate_create_callback_;
509
510 // The on frame drawn callback.
511 fml::closure next_frame_callback_;
512
513 // Handler for top level window messages.
514 std::unique_ptr<WindowsLifecycleManager> lifecycle_manager_;
515
516 std::shared_ptr<WindowsProcTable> windows_proc_table_;
517
518 std::shared_ptr<egl::ProcTable> gl_;
519
520 std::unique_ptr<PlatformViewPlugin> platform_view_plugin_;
521
522 // Handles display-related window messages.
523 bool HandleDisplayMonitorMessage(HWND hwnd,
524 UINT message,
525 WPARAM wparam,
526 LPARAM lparam,
527 LRESULT* result);
528
529 FML_DISALLOW_COPY_AND_ASSIGN(FlutterWindowsEngine);
530 };
531
532 } // namespace flutter
533
534 #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::DisplayMonitor
Definition: display_monitor.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:172
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:314
flutter::FlutterWindowsEngine::task_runner
TaskRunner * task_runner()
Definition: flutter_windows_engine.h:168
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:310
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:180
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::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:276
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::display_monitor
DisplayMonitor * display_monitor()
Definition: flutter_windows_engine.h:163
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
KeyboardHandlerBase * keyboard_key_handler()
Definition: flutter_windows_engine.h:198
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bool high_contrast_enabled() const
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