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Classes | Public Member Functions | Protected Member Functions | Friends | List of all members
flutter::FlutterWindowsView Class Reference

`#include <flutter_windows_view.h>`

Inheritance diagram for flutter::FlutterWindowsView:

## Public Member Functions
| FlutterWindowsView (FlutterViewId view_id, FlutterWindowsEngine *engine, std::unique_ptr< WindowBindingHandler > window_binding, std::shared_ptr< WindowsProcTable > windows_proc_table=nullptr)
virtual | ~FlutterWindowsView ()
FlutterViewId | view_id () const
bool | IsImplicitView () const
void | CreateRenderSurface ()
egl::WindowSurface * | surface () const
virtual HWND | GetWindowHandle () const
FlutterWindowsEngine * | GetEngine () const
void | ForceRedraw ()
virtual bool | ClearSoftwareBitmap ()
virtual bool | PresentSoftwareBitmap (const void *allocation, size_t row_bytes, size_t height)
FlutterWindowMetricsEvent | CreateWindowMetricsEvent () const
void | SendInitialBounds ()
void | AnnounceAlert (const std::wstring &text)
void | OnHighContrastChanged () override
bool | OnEmptyFrameGenerated ()
bool | OnFrameGenerated (size_t width, size_t height)
virtual void | OnFramePresented ()
void | UpdateFlutterCursor (const std::string &cursor_name)
void | SetFlutterCursor (HCURSOR cursor)
bool | OnWindowSizeChanged (size_t width, size_t height) override
void | OnWindowRepaint () override
void | OnPointerMove (double x, double y, FlutterPointerDeviceKind device_kind, int32_t device_id, int modifiers_state) override
void | OnPointerDown (double x, double y, FlutterPointerDeviceKind device_kind, int32_t device_id, FlutterPointerMouseButtons button) override
void | OnPointerUp (double x, double y, FlutterPointerDeviceKind device_kind, int32_t device_id, FlutterPointerMouseButtons button) override
void | OnPointerLeave (double x, double y, FlutterPointerDeviceKind device_kind, int32_t device_id=0) override
virtual void | OnPointerPanZoomStart (int32_t device_id) override
virtual void | OnPointerPanZoomUpdate (int32_t device_id, double pan_x, double pan_y, double scale, double rotation) override
virtual void | OnPointerPanZoomEnd (int32_t device_id) override
void | OnText (const std::u16string &) override
void | OnKey (int key, int scancode, int action, char32_t character, bool extended, bool was_down, KeyEventCallback callback) override
void | OnComposeBegin () override
void | OnComposeCommit () override
void | OnComposeEnd () override
void | OnComposeChange (const std::u16string &text, int cursor_pos) override
void | OnScroll (double x, double y, double delta_x, double delta_y, int scroll_offset_multiplier, FlutterPointerDeviceKind device_kind, int32_t device_id) override
void | OnScrollInertiaCancel (int32_t device_id) override
virtual void | OnUpdateSemanticsEnabled (bool enabled) override
virtual gfx::NativeViewAccessible | GetNativeViewAccessible () override
virtual void | OnCursorRectUpdated (const Rect &rect)
virtual void | OnResetImeComposing ()
void | OnDwmCompositionChanged ()
ui::AXPlatformNodeWin * | AlertNode () const
virtual ui::AXFragmentRootDelegateWin * | GetAxFragmentRootDelegate () override
virtual void | UpdateSemanticsEnabled (bool enabled)
std::weak_ptr< AccessibilityBridgeWindows > | accessibility_bridge ()
void | OnWindowStateEvent (HWND hwnd, WindowStateEvent event) override

## Protected Member Functions
virtual void | NotifyWinEventWrapper (ui::AXPlatformNodeWin *node, ax::mojom::Event event)
virtual std::shared_ptr< AccessibilityBridgeWindows > | CreateAccessibilityBridge ()

## Friends
class | ViewModifier

## Additional Inherited Members
Public Types inherited from flutter::WindowBindingHandlerDelegate
using | KeyEventCallback = std::function< void(bool)>

## Detailed Description

Definition at line 34 of file flutter_windows_view.h.

## Constructor & Destructor Documentation

## ◆ FlutterWindowsView()

flutter::FlutterWindowsView::FlutterWindowsView | ( | FlutterViewId | view_id,
|  | FlutterWindowsEngine * | engine,
|  | std::unique_ptr< WindowBindingHandler > | window_binding,
|  | std::shared_ptr< WindowsProcTable > | windows_proc_table = `nullptr`
| ) |  |

Definition at line 104 of file flutter_windows_view.cc.

109 : view_id_(view_id),
110 engine_(engine),
111 windows_proc_table_(std::move(windows_proc_table)) {
112 if (windows_proc_table_ == nullptr) {
113 windows_proc_table_ = std::make_shared<WindowsProcTable>();
114 }
115
116 // Take the binding handler, and give it a pointer back to self.
117 binding_handler_ = std::move(window_binding);
118 binding_handler_->SetView(this);
119 }

## ◆ ~FlutterWindowsView()

flutter::FlutterWindowsView::~FlutterWindowsView | ( |  | ) |
| virtual

Definition at line 121 of file flutter_windows_view.cc.

121 {
122 // The view owns the child window.
123 // Notify the engine the view's child window will no longer be visible.
124 engine_->OnWindowStateEvent(GetWindowHandle(), WindowStateEvent::kHide);
125
126 if (surface_) {
127 DestroyWindowSurface(*engine_, std::move(surface_));
128 }
129 }

References GetWindowHandle(), flutter::kHide, and flutter::FlutterWindowsEngine::OnWindowStateEvent().

## Member Function Documentation

## ◆ accessibility_bridge()

std::weak_ptr<AccessibilityBridgeWindows> flutter::FlutterWindowsView::accessibility_bridge | ( |  | ) |
| inline

Definition at line 242 of file flutter_windows_view.h.

242 {
243 return accessibility_bridge_;
244 }

Referenced by flutter::FlutterWindowsEngine::Run().

## ◆ AlertNode()

ui::AXPlatformNodeWin * flutter::FlutterWindowsView::AlertNode | ( |  | ) | const

Definition at line 787 of file flutter_windows_view.cc.

787 {
788 return binding_handler_->GetAlert();
789 }

## ◆ AnnounceAlert()

void flutter::FlutterWindowsView::AnnounceAlert | ( | const std::wstring & | text | ) |

Definition at line 766 of file flutter_windows_view.cc.

766 {
767 auto alert_delegate = binding_handler_->GetAlertDelegate();
768 if (!alert_delegate) {
769 return;
770 }
771 alert_delegate->SetText(fml::WideStringToUtf16(text));
772 ui::AXPlatformNodeWin* alert_node = binding_handler_->GetAlert();
773 NotifyWinEventWrapper(alert_node, ax::mojom::Event::kAlert);
774 }

References NotifyWinEventWrapper(), and text.

## ◆ ClearSoftwareBitmap()

bool flutter::FlutterWindowsView::ClearSoftwareBitmap | ( |  | ) |
| virtual

Definition at line 678 of file flutter_windows_view.cc.

678 {
679 return binding_handler_->OnBitmapSurfaceCleared();
680 }

Referenced by flutter::CompositorSoftware::Present().

## ◆ CreateAccessibilityBridge()

std::shared_ptr< AccessibilityBridgeWindows > flutter::FlutterWindowsView::CreateAccessibilityBridge | ( |  | ) |
| protected virtual

Definition at line 792 of file flutter_windows_view.cc.

792 {
793 return std::make_shared<AccessibilityBridgeWindows>(this);
794 }

Referenced by UpdateSemanticsEnabled().

## ◆ CreateRenderSurface()

void flutter::FlutterWindowsView::CreateRenderSurface | ( |  | ) |

Definition at line 697 of file flutter_windows_view.cc.

697 {
698 FML_DCHECK(surface_ == nullptr);
699
700 if (engine_->egl_manager()) {
701 PhysicalWindowBounds bounds = binding_handler_->GetPhysicalWindowBounds();
702 surface_ = engine_->egl_manager()->CreateWindowSurface(
703 GetWindowHandle(), bounds.width, bounds.height);
704
705 UpdateVsync(*engine_, surface_.get(), NeedsVsync());
706
707 resize_target_width_ = bounds.width;
708 resize_target_height_ = bounds.height;
709 }
710 }

References flutter::egl::Manager::CreateWindowSurface(), flutter::FlutterWindowsEngine::egl_manager(), GetWindowHandle(), flutter::PhysicalWindowBounds::height, and flutter::PhysicalWindowBounds::width.

## ◆ CreateWindowMetricsEvent()

FlutterWindowMetricsEvent flutter::FlutterWindowsView::CreateWindowMetricsEvent | ( |  | ) | const

Definition at line 375 of file flutter_windows_view.cc.

375 {
376 PhysicalWindowBounds bounds = binding_handler_->GetPhysicalWindowBounds();
377 double pixel_ratio = binding_handler_->GetDpiScale();
378
379 FlutterWindowMetricsEvent event = {};
380 event.struct_size = sizeof(event);
381 event.width = bounds.width;
382 event.height = bounds.height;
383 event.pixel_ratio = pixel_ratio;
384 event.view_id = view_id_;
385
386 return event;
387 }

References flutter::PhysicalWindowBounds::height, and flutter::PhysicalWindowBounds::width.

Referenced by SendInitialBounds().

## ◆ ForceRedraw()

void flutter::FlutterWindowsView::ForceRedraw | ( |  | ) |

Definition at line 187 of file flutter_windows_view.cc.

187 {
188 if (resize_status_ == ResizeState::kDone) {
189 // Request new frame.
190 engine_->ScheduleFrame();
191 }
192 }

References flutter::FlutterWindowsEngine::ScheduleFrame().

Referenced by OnWindowRepaint().

## ◆ GetAxFragmentRootDelegate()

ui::AXFragmentRootDelegateWin * flutter::FlutterWindowsView::GetAxFragmentRootDelegate | ( |  | ) |
| override virtual

Implements flutter::WindowBindingHandlerDelegate.

Definition at line 783 of file flutter_windows_view.cc.

783 {
784 return accessibility_bridge_.get();
785 }

## ◆ GetEngine()

FlutterWindowsEngine * flutter::FlutterWindowsView::GetEngine | ( |  | ) | const

Definition at line 762 of file flutter_windows_view.cc.

762 {
763 return engine_;
764 }

Referenced by flutter::AccessibilityBridgeWindows::DispatchAccessibilityAction(), and FlutterDesktopViewGetGraphicsAdapter().

## ◆ GetNativeViewAccessible()

gfx::NativeViewAccessible flutter::FlutterWindowsView::GetNativeViewAccessible | ( |  | ) |
| override virtual

Implements flutter::WindowBindingHandlerDelegate.

Definition at line 346 of file flutter_windows_view.cc.

346 {
347 if (!accessibility_bridge_) {
348 return nullptr;
349 }
350
351 return accessibility_bridge_->GetChildOfAXFragmentRoot();
352 }

## ◆ GetWindowHandle()

HWND flutter::FlutterWindowsView::GetWindowHandle | ( |  | ) | const
| virtual

Definition at line 758 of file flutter_windows_view.cc.

758 {
759 return binding_handler_->GetWindowHandle();
760 }

Referenced by CreateRenderSurface(), FlutterDesktopViewGetHWND(), flutter::FlutterPlatformNodeDelegateWindows::GetBoundsRect(), flutter::PlatformHandler::GetHasStrings(), flutter::PlatformHandler::GetPlainText(), flutter::FlutterPlatformNodeDelegateWindows::GetTargetForNativeAccessibilityEvent(), flutter::PlatformHandler::SetPlainText(), and ~FlutterWindowsView().

## ◆ IsImplicitView()

bool flutter::FlutterWindowsView::IsImplicitView | ( |  | ) | const

Definition at line 693 of file flutter_windows_view.cc.

693 {
694 return view_id_ == kImplicitViewId;
695 }

References flutter::kImplicitViewId.

Referenced by SendInitialBounds().

## ◆ NotifyWinEventWrapper()

void flutter::FlutterWindowsView::NotifyWinEventWrapper | ( | ui::AXPlatformNodeWin * | node,
|  | ax::mojom::Event | event
| ) |  |
| protected virtual

Definition at line 776 of file flutter_windows_view.cc.

777 {
778 if (node) {
779 node->NotifyAccessibilityEvent(event);
780 }
781 }

Referenced by AnnounceAlert().

## ◆ OnComposeBegin()

void flutter::FlutterWindowsView::OnComposeBegin | ( |  | ) |
| override virtual

Implements flutter::WindowBindingHandlerDelegate.

Definition at line 309 of file flutter_windows_view.cc.

309 {
310 SendComposeBegin();
311 }

## ◆ OnComposeChange()

void flutter::FlutterWindowsView::OnComposeChange | ( | const std::u16string & | text,
|  | int | cursor_pos
| ) |  |
| override virtual

Implements flutter::WindowBindingHandlerDelegate.

Definition at line 321 of file flutter_windows_view.cc.

322 {
323 SendComposeChange(text, cursor_pos);
324 }

References text.

## ◆ OnComposeCommit()

void flutter::FlutterWindowsView::OnComposeCommit | ( |  | ) |
| override virtual

Implements flutter::WindowBindingHandlerDelegate.

Definition at line 313 of file flutter_windows_view.cc.

313 {
314 SendComposeCommit();
315 }

## ◆ OnComposeEnd()

void flutter::FlutterWindowsView::OnComposeEnd | ( |  | ) |
| override virtual

Implements flutter::WindowBindingHandlerDelegate.

Definition at line 317 of file flutter_windows_view.cc.

317 {
318 SendComposeEnd();
319 }

## ◆ OnCursorRectUpdated()

void flutter::FlutterWindowsView::OnCursorRectUpdated | ( | const Rect & | rect | ) |
| virtual

Definition at line 354 of file flutter_windows_view.cc.

354 {
355 binding_handler_->OnCursorRectUpdated(rect);
356 }

## ◆ OnDwmCompositionChanged()

void flutter::FlutterWindowsView::OnDwmCompositionChanged | ( |  | ) |

Definition at line 808 of file flutter_windows_view.cc.

808 {
809 UpdateVsync(*engine_, surface_.get(), NeedsVsync());
810 }

## ◆ OnEmptyFrameGenerated()

bool flutter::FlutterWindowsView::OnEmptyFrameGenerated | ( |  | ) |

Definition at line 131 of file flutter_windows_view.cc.

131 {
132 // Called on the raster thread.
133 std::unique_lock<std::mutex> lock(resize_mutex_);
134
135 if (surface_ == nullptr || !surface_->IsValid()) {
136 return false;
137 }
138
139 if (resize_status_ != ResizeState::kResizeStarted) {
140 return true;
141 }
142
143 if (!ResizeRenderSurface(resize_target_height_, resize_target_width_)) {
144 return false;
145 }
146
147 // Platform thread is blocked for the entire duration until the
148 // resize_status_ is set to kDone by |OnFramePresented|.
149 resize_status_ = ResizeState::kFrameGenerated;
150 return true;
151 }

## ◆ OnFrameGenerated()

bool flutter::FlutterWindowsView::OnFrameGenerated | ( | size_t | width,
|  | size_t | height
| ) |  |

Definition at line 153 of file flutter_windows_view.cc.

153 {
154 // Called on the raster thread.
155 std::unique_lock<std::mutex> lock(resize_mutex_);
156
157 if (surface_ == nullptr || !surface_->IsValid()) {
158 return false;
159 }
160
161 if (resize_status_ != ResizeState::kResizeStarted) {
162 return true;
163 }
164
165 if (resize_target_width_ != width || resize_target_height_ != height) {
166 return false;
167 }
168
169 if (!ResizeRenderSurface(resize_target_width_, resize_target_height_)) {
170 return false;
171 }
172
173 // Platform thread is blocked for the entire duration until the
174 // resize_status_ is set to kDone by |OnFramePresented|.
175 resize_status_ = ResizeState::kFrameGenerated;
176 return true;
177 }

Referenced by flutter::CompositorOpenGL::Present().

## ◆ OnFramePresented()

void flutter::FlutterWindowsView::OnFramePresented | ( |  | ) |
| virtual

Definition at line 646 of file flutter_windows_view.cc.

646 {
647 // Called on the engine's raster thread.
648 std::unique_lock<std::mutex> lock(resize_mutex_);
649
650 switch (resize_status_) {
651 case ResizeState::kResizeStarted:
652 // The caller must first call |OnFrameGenerated| or
653 // |OnEmptyFrameGenerated| before calling this method. This
654 // indicates one of the following:
655 //
656 // 1. The caller did not call these methods.
657 // 2. The caller ignored these methods' result.
658 // 3. The platform thread started a resize after the caller called these
659 // methods. We might have presented a frame of the wrong size to the
660 // view.
661 return;
662 case ResizeState::kFrameGenerated: {
663 // A frame was generated for a pending resize.
664 // Unblock the platform thread.
665 resize_status_ = ResizeState::kDone;
666 lock.unlock();
667 resize_cv_.notify_all();
668
669 // Blocking the raster thread until DWM flushes alleviates glitches where
670 // previous size surface is stretched over current size view.
671 windows_proc_table_->DwmFlush();
672 }
673 case ResizeState::kDone:
674 return;
675 }
676 }

Referenced by flutter::CompositorOpenGL::Present().

## ◆ OnHighContrastChanged()

void flutter::FlutterWindowsView::OnHighContrastChanged | ( |  | ) |
| override virtual

Implements flutter::WindowBindingHandlerDelegate.

Definition at line 754 of file flutter_windows_view.cc.

754 {
755 engine_->UpdateHighContrastMode();
756 }

References flutter::FlutterWindowsEngine::UpdateHighContrastMode().

## ◆ OnKey()

void flutter::FlutterWindowsView::OnKey | ( | int | key,
|  | int | scancode,
|  | int | action,
|  | char32_t | character,
|  | bool | extended,
|  | bool | was_down,
|  | KeyEventCallback | callback
| ) |  |
| override virtual

Implements flutter::WindowBindingHandlerDelegate.

Definition at line 299 of file flutter_windows_view.cc.

305 {
306 SendKey(key, scancode, action, character, extended, was_down, callback);
307 }

References action, callback, character, extended, key, scancode, and was_down.

## ◆ OnPointerDown()

void flutter::FlutterWindowsView::OnPointerDown | ( | double | x,
|  | double | y,
|  | FlutterPointerDeviceKind | device_kind,
|  | int32_t | device_id,
|  | FlutterPointerMouseButtons | button
| ) |  |
| override virtual

Implements flutter::WindowBindingHandlerDelegate.

Definition at line 245 of file flutter_windows_view.cc.

250 {
251 if (flutter_button != 0) {
252 auto state = GetOrCreatePointerState(device_kind, device_id);
253 state->buttons |= flutter_button;
254 SendPointerDown(x, y, state);
255 }
256 }

## ◆ OnPointerLeave()

void flutter::FlutterWindowsView::OnPointerLeave | ( | double | x,
|  | double | y,
|  | FlutterPointerDeviceKind | device_kind,
|  | int32_t | device_id = `0`
| ) |  |
| override virtual

Implements flutter::WindowBindingHandlerDelegate.

Definition at line 271 of file flutter_windows_view.cc.

274 {
275 SendPointerLeave(x, y, GetOrCreatePointerState(device_kind, device_id));
276 }

## ◆ OnPointerMove()

void flutter::FlutterWindowsView::OnPointerMove | ( | double | x,
|  | double | y,
|  | FlutterPointerDeviceKind | device_kind,
|  | int32_t | device_id,
|  | int | modifiers_state
| ) |  |
| override virtual

Implements flutter::WindowBindingHandlerDelegate.

Definition at line 236 of file flutter_windows_view.cc.

240 {
241 engine_->keyboard_key_handler()->SyncModifiersIfNeeded(modifiers_state);
242 SendPointerMove(x, y, GetOrCreatePointerState(device_kind, device_id));
243 }

References flutter::FlutterWindowsEngine::keyboard_key_handler(), and flutter::KeyboardHandlerBase::SyncModifiersIfNeeded().

## ◆ OnPointerPanZoomEnd()

void flutter::FlutterWindowsView::OnPointerPanZoomEnd | ( | int32_t | device_id | ) |
| override virtual

Implements flutter::WindowBindingHandlerDelegate.

Definition at line 291 of file flutter_windows_view.cc.

291 {
292 SendPointerPanZoomEnd(device_id);
293 }

## ◆ OnPointerPanZoomStart()

void flutter::FlutterWindowsView::OnPointerPanZoomStart | ( | int32_t | device_id | ) |
| override virtual

Implements flutter::WindowBindingHandlerDelegate.

Definition at line 278 of file flutter_windows_view.cc.

278 {
279 PointerLocation point = binding_handler_->GetPrimaryPointerLocation();
280 SendPointerPanZoomStart(device_id, point.x, point.y);
281 }

References flutter::PointerLocation::x, and flutter::PointerLocation::y.

## ◆ OnPointerPanZoomUpdate()

void flutter::FlutterWindowsView::OnPointerPanZoomUpdate | ( | int32_t | device_id,
|  | double | pan_x,
|  | double | pan_y,
|  | double | scale,
|  | double | rotation
| ) |  |
| override virtual

Implements flutter::WindowBindingHandlerDelegate.

Definition at line 283 of file flutter_windows_view.cc.

287 {
288 SendPointerPanZoomUpdate(device_id, pan_x, pan_y, scale, rotation);
289 }

## ◆ OnPointerUp()

void flutter::FlutterWindowsView::OnPointerUp | ( | double | x,
|  | double | y,
|  | FlutterPointerDeviceKind | device_kind,
|  | int32_t | device_id,
|  | FlutterPointerMouseButtons | button
| ) |  |
| override virtual

Implements flutter::WindowBindingHandlerDelegate.

Definition at line 258 of file flutter_windows_view.cc.

263 {
264 if (flutter_button != 0) {
265 auto state = GetOrCreatePointerState(device_kind, device_id);
266 state->buttons &= ~flutter_button;
267 SendPointerUp(x, y, state);
268 }
269 }

## ◆ OnResetImeComposing()

void flutter::FlutterWindowsView::OnResetImeComposing | ( |  | ) |
| virtual

Definition at line 358 of file flutter_windows_view.cc.

358 {
359 binding_handler_->OnResetImeComposing();
360 }

## ◆ OnScroll()

void flutter::FlutterWindowsView::OnScroll | ( | double | x,
|  | double | y,
|  | double | delta_x,
|  | double | delta_y,
|  | int | scroll_offset_multiplier,
|  | FlutterPointerDeviceKind | device_kind,
|  | int32_t | device_id
| ) |  |
| override virtual

Implements flutter::WindowBindingHandlerDelegate.

Definition at line 326 of file flutter_windows_view.cc.

332 {
333 SendScroll(x, y, delta_x, delta_y, scroll_offset_multiplier, device_kind,
334 device_id);
335 }

## ◆ OnScrollInertiaCancel()

void flutter::FlutterWindowsView::OnScrollInertiaCancel | ( | int32_t | device_id | ) |
| override virtual

Implements flutter::WindowBindingHandlerDelegate.

Definition at line 337 of file flutter_windows_view.cc.

337 {
338 PointerLocation point = binding_handler_->GetPrimaryPointerLocation();
339 SendScrollInertiaCancel(device_id, point.x, point.y);
340 }

References flutter::PointerLocation::x, and flutter::PointerLocation::y.

## ◆ OnText()

void flutter::FlutterWindowsView::OnText | ( | const std::u16string & | text | ) |
| override virtual

Implements flutter::WindowBindingHandlerDelegate.

Definition at line 295 of file flutter_windows_view.cc.

295 {
296 SendText(text);
297 }

References text.

## ◆ OnUpdateSemanticsEnabled()

void flutter::FlutterWindowsView::OnUpdateSemanticsEnabled | ( | bool | enabled | ) |
| override virtual

Implements flutter::WindowBindingHandlerDelegate.

Definition at line 342 of file flutter_windows_view.cc.

342 {
343 engine_->UpdateSemanticsEnabled(enabled);
344 }

References flutter::FlutterWindowsEngine::UpdateSemanticsEnabled().

## ◆ OnWindowRepaint()

void flutter::FlutterWindowsView::OnWindowRepaint | ( |  | ) |
| override virtual

Implements flutter::WindowBindingHandlerDelegate.

Definition at line 232 of file flutter_windows_view.cc.

232 {
233 ForceRedraw();
234 }

References ForceRedraw().

## ◆ OnWindowSizeChanged()

bool flutter::FlutterWindowsView::OnWindowSizeChanged | ( | size_t | width,
|  | size_t | height
| ) |  |
| override virtual

Implements flutter::WindowBindingHandlerDelegate.

Definition at line 194 of file flutter_windows_view.cc.

194 {
195 // Called on the platform thread.
196 std::unique_lock<std::mutex> lock(resize_mutex_);
197
198 if (!engine_->egl_manager()) {
199 SendWindowMetrics(width, height, binding_handler_->GetDpiScale());
200 return true;
201 }
202
203 if (!surface_ || !surface_->IsValid()) {
204 SendWindowMetrics(width, height, binding_handler_->GetDpiScale());
205 return true;
206 }
207
208 // We're using OpenGL rendering. Resizing the surface must happen on the
209 // raster thread.
210 bool surface_will_update =
211 SurfaceWillUpdate(surface_->width(), surface_->height(), width, height);
212 if (!surface_will_update) {
213 SendWindowMetrics(width, height, binding_handler_->GetDpiScale());
214 return true;
215 }
216
217 resize_status_ = ResizeState::kResizeStarted;
218 resize_target_width_ = width;
219 resize_target_height_ = height;
220
221 SendWindowMetrics(width, height, binding_handler_->GetDpiScale());
222
223 // Block the platform thread until a frame is presented with the target
224 // size. See |OnFrameGenerated|, |OnEmptyFrameGenerated|, and
225 // |OnFramePresented|.
226 return resize_cv_.wait_for(lock, kWindowResizeTimeout,
227 [&resize_status = resize_status_] {
228 return resize_status == ResizeState::kDone;
229 });
230 }

References flutter::FlutterWindowsEngine::egl_manager().

## ◆ OnWindowStateEvent()

void flutter::FlutterWindowsView::OnWindowStateEvent | ( | HWND | hwnd,
|  | WindowStateEvent | event
| ) |  |
| override virtual

Implements flutter::WindowBindingHandlerDelegate.

Definition at line 812 of file flutter_windows_view.cc.

812 {
813 engine_->OnWindowStateEvent(hwnd, event);
814 }

References flutter::FlutterWindowsEngine::OnWindowStateEvent().

## ◆ PresentSoftwareBitmap()

bool flutter::FlutterWindowsView::PresentSoftwareBitmap | ( | const void * | allocation,
|  | size_t | row_bytes,
|  | size_t | height
| ) |  |
| virtual

Definition at line 682 of file flutter_windows_view.cc.

684 {
685 return binding_handler_->OnBitmapSurfaceUpdated(allocation, row_bytes,
686 height);
687 }

Referenced by flutter::CompositorSoftware::Present().

## ◆ SendInitialBounds()

void flutter::FlutterWindowsView::SendInitialBounds | ( |  | ) |

Definition at line 389 of file flutter_windows_view.cc.

389 {
390 // Non-implicit views' initial window metrics are sent when the view is added
391 // to the engine.
392 if (!IsImplicitView()) {
393 return;
394 }
395
396 engine_->SendWindowMetricsEvent(CreateWindowMetricsEvent());
397 }

References CreateWindowMetricsEvent(), IsImplicitView(), and flutter::FlutterWindowsEngine::SendWindowMetricsEvent().

## ◆ SetFlutterCursor()

void flutter::FlutterWindowsView::SetFlutterCursor | ( | HCURSOR | cursor | ) |

Definition at line 183 of file flutter_windows_view.cc.

183 {
184 binding_handler_->SetFlutterCursor(cursor);
185 }

## ◆ surface()

egl::WindowSurface * flutter::FlutterWindowsView::surface | ( |  | ) | const

Definition at line 750 of file flutter_windows_view.cc.

750 {
751 return surface_.get();
752 }

Referenced by flutter::CompositorOpenGL::Present().

## ◆ UpdateFlutterCursor()

void flutter::FlutterWindowsView::UpdateFlutterCursor | ( | const std::string & | cursor_name | ) |

Definition at line 179 of file flutter_windows_view.cc.

179 {
180 binding_handler_->UpdateFlutterCursor(cursor_name);
181 }

## ◆ UpdateSemanticsEnabled()

void flutter::FlutterWindowsView::UpdateSemanticsEnabled | ( | bool | enabled | ) |
| virtual

Definition at line 796 of file flutter_windows_view.cc.

796 {
797 if (semantics_enabled_ != enabled) {
798 semantics_enabled_ = enabled;
799
800 if (!semantics_enabled_ && accessibility_bridge_) {
801 accessibility_bridge_.reset();
802 } else if (semantics_enabled_ && !accessibility_bridge_) {
803 accessibility_bridge_ = CreateAccessibilityBridge();
804 }
805 }
806 }

References CreateAccessibilityBridge().

## ◆ view_id()

FlutterViewId flutter::FlutterWindowsView::view_id | ( |  | ) | const

Definition at line 689 of file flutter_windows_view.cc.

689 {
690 return view_id_;
691 }

## Friends And Related Function Documentation

## ◆ ViewModifier

friend class ViewModifier
| friend

Definition at line 259 of file flutter_windows_view.h.

The documentation for this class was generated from the following files:

- shell/platform/windows/flutter_windows_view.h
- shell/platform/windows/flutter_windows_view.cc

flutter::kImplicitViewId
constexpr FlutterViewId kImplicitViewId
Definition: flutter_windows_engine.h:55
flutter::WindowStateEvent::kHide
@ kHide
scancode
int scancode
Definition: keyboard_key_handler_unittests.cc:115
was_down
bool was_down
Definition: keyboard_key_handler_unittests.cc:119
extended
bool extended
Definition: keyboard_key_handler_unittests.cc:118
character
char32_t character
Definition: keyboard_key_handler_unittests.cc:117
flutter::FlutterWindowsView::ForceRedraw
void ForceRedraw()
Definition: flutter_windows_view.cc:187
flutter::FlutterWindowsView::IsImplicitView
bool IsImplicitView() const
Definition: flutter_windows_view.cc:693
flutter::FlutterWindowsView::GetWindowHandle
virtual HWND GetWindowHandle() const
Definition: flutter_windows_view.cc:758
text
std::u16string text
Definition: keyboard_unittests.cc:332
flutter::FlutterWindowsEngine::SendWindowMetricsEvent
void SendWindowMetricsEvent(const FlutterWindowMetricsEvent &event)
Definition: flutter_windows_engine.cc:679
flutter::FlutterWindowsView::view_id
FlutterViewId view_id() const
Definition: flutter_windows_view.cc:689
flutter::KeyboardHandlerBase::SyncModifiersIfNeeded
virtual void SyncModifiersIfNeeded(int modifiers_state)=0
flutter::FlutterWindowsEngine::keyboard_key_handler
KeyboardHandlerBase * keyboard_key_handler()
Definition: flutter_windows_engine.h:182
flutter::FlutterWindowsView::NotifyWinEventWrapper
virtual void NotifyWinEventWrapper(ui::AXPlatformNodeWin *node, ax::mojom::Event event)
Definition: flutter_windows_view.cc:776
flutter::FlutterWindowsEngine::ScheduleFrame
void ScheduleFrame()
Definition: flutter_windows_engine.cc:759
flutter::FlutterWindowsEngine::UpdateHighContrastMode
void UpdateHighContrastMode()
Definition: flutter_windows_engine.cc:921
flutter::FlutterWindowsView::CreateAccessibilityBridge
virtual std::shared_ptr< AccessibilityBridgeWindows > CreateAccessibilityBridge()
Definition: flutter_windows_view.cc:792
action
int action
Definition: keyboard_key_handler_unittests.cc:116
flutter::FlutterWindowsEngine::UpdateSemanticsEnabled
void UpdateSemanticsEnabled(bool enabled)
Definition: flutter_windows_engine.cc:886
flutter::FlutterWindowsEngine::egl_manager
egl::Manager * egl_manager() const
Definition: flutter_windows_engine.h:165
key
int key
Definition: keyboard_key_handler_unittests.cc:114
flutter::FlutterWindowsView::CreateWindowMetricsEvent
FlutterWindowMetricsEvent CreateWindowMetricsEvent() const
Definition: flutter_windows_view.cc:375
flutter::FlutterWindowsEngine::OnWindowStateEvent
void OnWindowStateEvent(HWND hwnd, WindowStateEvent event)
Definition: flutter_windows_engine.cc:962
flutter::egl::Manager::CreateWindowSurface
virtual std::unique_ptr< WindowSurface > CreateWindowSurface(HWND hwnd, size_t width, size_t height)
Definition: manager.cc:239
callback
FlutterDesktopBinaryReply callback
Definition: flutter_windows_view_unittests.cc:52