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Public Member Functions | Protected Member Functions | Protected Attributes | Friends | List of all members
flutter::FlutterWindow Class Reference

`#include <flutter_window.h>`

Inheritance diagram for flutter::FlutterWindow:

## Public Member Functions
| FlutterWindow (int width, int height, std::shared_ptr< WindowsProcTable > windows_proc_table=nullptr, std::unique_ptr< TextInputManager > text_input_manager=nullptr)
virtual | ~FlutterWindow ()
void | InitializeChild (const char *title, unsigned int width, unsigned int height)
virtual BOOL | Win32PeekMessage (LPMSG lpMsg, UINT wMsgFilterMin, UINT wMsgFilterMax, UINT wRemoveMsg) override
virtual uint32_t | Win32MapVkToChar (uint32_t virtual_key) override
virtual UINT | Win32DispatchMessage (UINT Msg, WPARAM wParam, LPARAM lParam) override
virtual void | OnDpiScale (unsigned int dpi)
virtual void | OnResize (unsigned int width, unsigned int height)
virtual void | OnPaint ()
virtual void | OnPointerMove (double x, double y, FlutterPointerDeviceKind device_kind, int32_t device_id, int modifiers_state)
virtual void | OnPointerDown (double x, double y, FlutterPointerDeviceKind device_kind, int32_t device_id, UINT button)
virtual void | OnPointerUp (double x, double y, FlutterPointerDeviceKind device_kind, int32_t device_id, UINT button)
virtual void | OnPointerLeave (double x, double y, FlutterPointerDeviceKind device_kind, int32_t device_id)
virtual void | OnText (const std::u16string &text) override
virtual void | OnKey (int key, int scancode, int action, char32_t character, bool extended, bool was_down, KeyEventCallback callback) override
virtual void | OnComposeBegin ()
virtual void | OnComposeCommit ()
virtual void | OnComposeEnd ()
virtual void | OnComposeChange (const std::u16string &text, int cursor_pos)
virtual void | OnCursorRectUpdated (const Rect &rect) override
virtual void | OnResetImeComposing () override
virtual void | OnUpdateSemanticsEnabled (bool enabled)
virtual void | OnScroll (double delta_x, double delta_y, FlutterPointerDeviceKind device_kind, int32_t device_id)
virtual gfx::NativeViewAccessible | GetNativeViewAccessible ()
virtual void | SetView (WindowBindingHandlerDelegate *view) override
virtual HWND | GetWindowHandle () override
virtual float | GetDpiScale () override
virtual PhysicalWindowBounds | GetPhysicalWindowBounds () override
virtual bool | OnBitmapSurfaceCleared () override
virtual bool | OnBitmapSurfaceUpdated (const void *allocation, size_t row_bytes, size_t height) override
virtual PointerLocation | GetPrimaryPointerLocation () override
virtual void | OnThemeChange ()
virtual AlertPlatformNodeDelegate * | GetAlertDelegate () override
virtual ui::AXPlatformNodeWin * | GetAlert () override
virtual bool | Focus () override
virtual ui::AXFragmentRootDelegateWin * | GetAxFragmentRootDelegate ()
virtual void | OnWindowStateEvent (WindowStateEvent event)
Public Member Functions inherited from flutter::KeyboardManager::WindowDelegate
virtual | ~WindowDelegate ()=default
Public Member Functions inherited from flutter::WindowBindingHandler
virtual | ~WindowBindingHandler ()=default

## Protected Member Functions
| FlutterWindow ()
virtual LRESULT | Win32DefWindowProc (HWND hWnd, UINT Msg, WPARAM wParam, LPARAM lParam)
std::wstring | NarrowToWide (const char *source)
LRESULT | HandleMessage (UINT const message, WPARAM const wparam, LPARAM const lparam) noexcept
virtual LRESULT | OnGetObject (UINT const message, WPARAM const wparam, LPARAM const lparam)
virtual void | OnImeSetContext (UINT const message, WPARAM const wparam, LPARAM const lparam)
virtual void | OnImeStartComposition (UINT const message, WPARAM const wparam, LPARAM const lparam)
virtual void | OnImeComposition (UINT const message, WPARAM const wparam, LPARAM const lparam)
virtual void | OnImeEndComposition (UINT const message, WPARAM const wparam, LPARAM const lparam)
virtual void | OnImeRequest (UINT const message, WPARAM const wparam, LPARAM const lparam)
virtual void | AbortImeComposing ()
virtual void | UpdateCursorRect (const Rect &rect)
UINT | GetCurrentDPI ()
UINT | GetCurrentWidth ()
UINT | GetCurrentHeight ()
virtual float | GetScrollOffsetMultiplier ()

## Protected Attributes
std::unique_ptr< AlertPlatformNodeDelegate > | alert_delegate_
std::unique_ptr< ui::AXPlatformNodeWin > | alert_node_
std::unique_ptr< DirectManipulationOwner > | direct_manipulation_owner_

## Friends
class | WindowAXFragmentRootDelegate

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

## Detailed Description

Definition at line 35 of file flutter_window.h.

## Constructor & Destructor Documentation

## ◆ FlutterWindow() [1/2]

flutter::FlutterWindow::FlutterWindow | ( | int | width,
|  | int | height,
|  | std::shared_ptr< WindowsProcTable > | windows_proc_table = `nullptr`,
|  | std::unique_ptr< TextInputManager > | text_input_manager = `nullptr`
| ) |  |

Definition at line 76 of file flutter_window.cc.

81 : touch_id_generator_(kMinTouchDeviceId, kMaxTouchDeviceId),
82 windows_proc_table_(std::move(windows_proc_table)),
83 text_input_manager_(std::move(text_input_manager)),
84 ax_fragment_root_(nullptr) {
85 // Get the DPI of the primary monitor as the initial DPI. If Per-Monitor V2 is
86 // supported, |current_dpi_| should be updated in the
87 // kWmDpiChangedBeforeParent message.
88 current_dpi_ = GetDpiForHWND(nullptr);
89
90 // Get initial value for wheel scroll lines
91 // TODO: Listen to changes for this value
92 // https://github.com/flutter/flutter/issues/107248
93 UpdateScrollOffsetMultiplier();
94
95 if (windows_proc_table_ == nullptr) {
96 windows_proc_table_ = std::make_unique<WindowsProcTable>();
97 }
98 if (text_input_manager_ == nullptr) {
99 text_input_manager_ = std::make_unique<TextInputManager>();
100 }
101 keyboard_manager_ = std::make_unique<KeyboardManager>(this);
102
103 InitializeChild("FLUTTERVIEW", width, height);
104 }
flutter::FlutterWindow::InitializeChild
void InitializeChild(const char *title, unsigned int width, unsigned int height)
Definition: flutter_window.cc:395
flutter::GetDpiForHWND
UINT GetDpiForHWND(HWND hwnd)
Definition: dpi_utils.cc:130

References flutter::GetDpiForHWND(), and InitializeChild().

## ◆ ~FlutterWindow()

flutter::FlutterWindow::~FlutterWindow | ( |  | ) |
| virtual

Definition at line 110 of file flutter_window.cc.

110 {
111 Destroy();
112 }

## ◆ FlutterWindow() [2/2]

flutter::FlutterWindow::FlutterWindow | ( |  | ) |
| protected

Definition at line 107 of file flutter_window.cc.

108 : touch_id_generator_(kMinTouchDeviceId, kMaxTouchDeviceId) {}

## Member Function Documentation

## ◆ AbortImeComposing()

void flutter::FlutterWindow::AbortImeComposing | ( |  | ) |
| protectedvirtual

Definition at line 873 of file flutter_window.cc.

873 {
874 text_input_manager_->AbortComposing();
875 }

Referenced by OnResetImeComposing().

## ◆ Focus()

bool flutter::FlutterWindow::Focus | ( |  | ) |
| overridevirtual

Implements flutter::WindowBindingHandler.

Definition at line 135 of file flutter_window.cc.

135 {
136 auto hwnd = GetWindowHandle();
137 if (hwnd == nullptr) {
138 return false;
139 }
140
141 HWND prevFocus = ::SetFocus(hwnd);
142 if (prevFocus == nullptr) {
143 return false;
144 }
145
146 return true;
147 }
flutter::FlutterWindow::GetWindowHandle
virtual HWND GetWindowHandle() override
Definition: flutter_window.cc:430

References GetWindowHandle().

## ◆ GetAlert()

ui::AXPlatformNodeWin * flutter::FlutterWindow::GetAlert | ( |  | ) |
| overridevirtual

Implements flutter::WindowBindingHandler.

Definition at line 321 of file flutter_window.cc.

321 {
322 CreateAxFragmentRoot();
323 return alert_node_.get();
324 }
flutter::FlutterWindow::alert_node_
std::unique_ptr< ui::AXPlatformNodeWin > alert_node_
Definition: flutter_window.h:271

References alert_node_.

## ◆ GetAlertDelegate()

AlertPlatformNodeDelegate * flutter::FlutterWindow::GetAlertDelegate | ( |  | ) |
| overridevirtual

Implements flutter::WindowBindingHandler.

Definition at line 316 of file flutter_window.cc.

316 {
317 CreateAxFragmentRoot();
318 return alert_delegate_.get();
319 }
flutter::FlutterWindow::alert_delegate_
std::unique_ptr< AlertPlatformNodeDelegate > alert_delegate_
Definition: flutter_window.h:268

References alert_delegate_.

## ◆ GetAxFragmentRootDelegate()

ui::AXFragmentRootDelegateWin * flutter::FlutterWindow::GetAxFragmentRootDelegate | ( |  | ) |
| virtual

Definition at line 312 of file flutter_window.cc.

312 {
313 return binding_handler_delegate_->GetAxFragmentRootDelegate();
314 }
flutter::WindowBindingHandlerDelegate::GetAxFragmentRootDelegate
virtual ui::AXFragmentRootDelegateWin * GetAxFragmentRootDelegate()=0

References flutter::WindowBindingHandlerDelegate::GetAxFragmentRootDelegate().

## ◆ GetCurrentDPI()

UINT flutter::FlutterWindow::GetCurrentDPI | ( |  | ) |
| protected

Definition at line 881 of file flutter_window.cc.

881 {
882 return current_dpi_;
883 }

Referenced by GetDpiScale().

## ◆ GetCurrentHeight()

UINT flutter::FlutterWindow::GetCurrentHeight | ( |  | ) |
| protected

Definition at line 889 of file flutter_window.cc.

889 {
890 return current_height_;
891 }

Referenced by GetPhysicalWindowBounds().

## ◆ GetCurrentWidth()

UINT flutter::FlutterWindow::GetCurrentWidth | ( |  | ) |
| protected

Definition at line 885 of file flutter_window.cc.

885 {
886 return current_width_;
887 }

Referenced by GetPhysicalWindowBounds().

## ◆ GetDpiScale()

float flutter::FlutterWindow::GetDpiScale | ( |  | ) |
| overridevirtual

Implements flutter::WindowBindingHandler.

Definition at line 127 of file flutter_window.cc.

127 {
128 return static_cast<float>(GetCurrentDPI()) / static_cast<float>(base_dpi);
129 }
flutter::FlutterWindow::GetCurrentDPI
UINT GetCurrentDPI()
Definition: flutter_window.cc:881

References GetCurrentDPI().

Referenced by OnCursorRectUpdated().

## ◆ GetNativeViewAccessible()

gfx::NativeViewAccessible flutter::FlutterWindow::GetNativeViewAccessible | ( |  | ) |
| virtual

Definition at line 293 of file flutter_window.cc.

293 {
294 if (binding_handler_delegate_ == nullptr) {
295 return nullptr;
296 }
297
298 return binding_handler_delegate_->GetNativeViewAccessible();
299 }
flutter::WindowBindingHandlerDelegate::GetNativeViewAccessible
virtual gfx::NativeViewAccessible GetNativeViewAccessible()=0

References flutter::WindowBindingHandlerDelegate::GetNativeViewAccessible().

Referenced by OnGetObject().

## ◆ GetPhysicalWindowBounds()

PhysicalWindowBounds flutter::FlutterWindow::GetPhysicalWindowBounds | ( |  | ) |
| overridevirtual

Implements flutter::WindowBindingHandler.

Definition at line 131 of file flutter_window.cc.

131 {
132 return {GetCurrentWidth(), GetCurrentHeight()};
133 }
flutter::FlutterWindow::GetCurrentWidth
UINT GetCurrentWidth()
Definition: flutter_window.cc:885
flutter::FlutterWindow::GetCurrentHeight
UINT GetCurrentHeight()
Definition: flutter_window.cc:889

References GetCurrentHeight(), and GetCurrentWidth().

## ◆ GetPrimaryPointerLocation()

PointerLocation flutter::FlutterWindow::GetPrimaryPointerLocation | ( |  | ) |
| overridevirtual

Implements flutter::WindowBindingHandler.

Definition at line 301 of file flutter_window.cc.

301 {
302 POINT point;
303 GetCursorPos(&point);
304 ScreenToClient(GetWindowHandle(), &point);
305 return {(size_t)point.x, (size_t)point.y};
306 }

References GetWindowHandle().

## ◆ GetScrollOffsetMultiplier()

float flutter::FlutterWindow::GetScrollOffsetMultiplier | ( |  | ) |
| protectedvirtual

Definition at line 893 of file flutter_window.cc.

893 {
894 return scroll_offset_multiplier_;
895 }

Referenced by OnScroll().

## ◆ GetWindowHandle()

HWND flutter::FlutterWindow::GetWindowHandle | ( |  | ) |
| overridevirtual

Implements flutter::WindowBindingHandler.

Definition at line 430 of file flutter_window.cc.

430 {
431 return window_handle_;
432 }

Referenced by flutter::DirectManipulationOwner::Destroy(), Focus(), GetPrimaryPointerLocation(), flutter::DirectManipulationOwner::Init(), OnBitmapSurfaceCleared(), OnBitmapSurfaceUpdated(), OnScroll(), and OnWindowStateEvent().

## ◆ HandleMessage()

LRESULT flutter::FlutterWindow::HandleMessage | ( | UINT const | message,
|  | WPARAM const | wparam,
|  | LPARAM const | lparam
| ) |  |
| protectednoexcept

Definition at line 499 of file flutter_window.cc.

501 {
502 LPARAM result_lparam = lparam;
503 int xPos = 0, yPos = 0;
504 UINT width = 0, height = 0;
505 UINT button_pressed = 0;
506 FlutterPointerDeviceKind device_kind;
507
508 switch (message) {
509 case kWmDpiChangedBeforeParent:
510 current_dpi_ = GetDpiForHWND(window_handle_);
511 OnDpiScale(current_dpi_);
512 return 0;
513 case WM_SIZE:
514 width = LOWORD(lparam);
515 height = HIWORD(lparam);
516
517 current_width_ = width;
518 current_height_ = height;
519 HandleResize(width, height);
520
521 OnWindowStateEvent(width == 0 && height == 0 ? WindowStateEvent::kHide
522 : WindowStateEvent::kShow);
523 break;
524 case WM_PAINT:
525 OnPaint();
526 break;
527 case WM_TOUCH: {
528 UINT num_points = LOWORD(wparam);
529 touch_points_.resize(num_points);
530 auto touch_input_handle = reinterpret_cast<HTOUCHINPUT>(lparam);
531 if (GetTouchInputInfo(touch_input_handle, num_points,
532 touch_points_.data(), sizeof(TOUCHINPUT))) {
533 for (const auto& touch : touch_points_) {
534 // Generate a mapped ID for the Windows-provided touch ID
535 auto touch_id = touch_id_generator_.GetGeneratedId(touch.dwID);
536
537 POINT pt = {TOUCH_COORD_TO_PIXEL(touch.x),
538 TOUCH_COORD_TO_PIXEL(touch.y)};
539 ScreenToClient(window_handle_, &pt);
540 auto x = static_cast<double>(pt.x);
541 auto y = static_cast<double>(pt.y);
542
543 if (touch.dwFlags & TOUCHEVENTF_DOWN) {
544 OnPointerDown(x, y, kFlutterPointerDeviceKindTouch, touch_id,
545 WM_LBUTTONDOWN);
546 } else if (touch.dwFlags & TOUCHEVENTF_MOVE) {
547 OnPointerMove(x, y, kFlutterPointerDeviceKindTouch, touch_id, 0);
548 } else if (touch.dwFlags & TOUCHEVENTF_UP) {
549 OnPointerUp(x, y, kFlutterPointerDeviceKindTouch, touch_id,
550 WM_LBUTTONDOWN);
551 OnPointerLeave(x, y, kFlutterPointerDeviceKindTouch, touch_id);
552 touch_id_generator_.ReleaseNumber(touch.dwID);
553 }
554 }
555 CloseTouchInputHandle(touch_input_handle);
556 }
557 return 0;
558 }
559 case WM_MOUSEMOVE:
560 device_kind = GetFlutterPointerDeviceKind();
561 if (device_kind == kFlutterPointerDeviceKindMouse) {
562 TrackMouseLeaveEvent(window_handle_);
563
564 xPos = GET_X_LPARAM(lparam);
565 yPos = GET_Y_LPARAM(lparam);
566 mouse_x_ = static_cast<double>(xPos);
567 mouse_y_ = static_cast<double>(yPos);
568
569 int mods = 0;
570 if (wparam & MK_CONTROL) {
571 mods |= kControl;
572 }
573 if (wparam & MK_SHIFT) {
574 mods |= kShift;
575 }
576 OnPointerMove(mouse_x_, mouse_y_, device_kind, kDefaultPointerDeviceId,
577 mods);
578 }
579 break;
580 case WM_MOUSELEAVE:
581 device_kind = GetFlutterPointerDeviceKind();
582 if (device_kind == kFlutterPointerDeviceKindMouse) {
583 OnPointerLeave(mouse_x_, mouse_y_, device_kind,
584 kDefaultPointerDeviceId);
585 }
586
587 // Once the tracked event is received, the TrackMouseEvent function
588 // resets. Set to false to make sure it's called once mouse movement is
589 // detected again.
590 tracking_mouse_leave_ = false;
591 break;
592 case WM_SETCURSOR: {
593 UINT hit_test_result = LOWORD(lparam);
594 if (hit_test_result == HTCLIENT) {
595 // Halt further processing to prevent DefWindowProc from setting the
596 // cursor back to the registered class cursor.
597 return TRUE;
598 }
599 break;
600 }
601 case WM_SETFOCUS:
602 OnWindowStateEvent(WindowStateEvent::kFocus);
603 ::CreateCaret(window_handle_, nullptr, 1, 1);
604 break;
605 case WM_KILLFOCUS:
606 OnWindowStateEvent(WindowStateEvent::kUnfocus);
607 ::DestroyCaret();
608 break;
609 case WM_LBUTTONDOWN:
610 case WM_RBUTTONDOWN:
611 case WM_MBUTTONDOWN:
612 case WM_XBUTTONDOWN:
613 device_kind = GetFlutterPointerDeviceKind();
614 if (device_kind != kFlutterPointerDeviceKindMouse) {
615 break;
616 }
617
618 if (message == WM_LBUTTONDOWN) {
619 // Capture the pointer in case the user drags outside the client area.
620 // In this case, the "mouse leave" event is delayed until the user
621 // releases the button. It's only activated on left click given that
622 // it's more common for apps to handle dragging with only the left
623 // button.
624 SetCapture(window_handle_);
625 }
626 button_pressed = message;
627 if (message == WM_XBUTTONDOWN) {
628 button_pressed = GET_XBUTTON_WPARAM(wparam);
629 }
630 xPos = GET_X_LPARAM(lparam);
631 yPos = GET_Y_LPARAM(lparam);
632 OnPointerDown(static_cast<double>(xPos), static_cast<double>(yPos),
633 device_kind, kDefaultPointerDeviceId, button_pressed);
634 break;
635 case WM_LBUTTONUP:
636 case WM_RBUTTONUP:
637 case WM_MBUTTONUP:
638 case WM_XBUTTONUP:
639 device_kind = GetFlutterPointerDeviceKind();
640 if (device_kind != kFlutterPointerDeviceKindMouse) {
641 break;
642 }
643
644 if (message == WM_LBUTTONUP) {
645 ReleaseCapture();
646 }
647 button_pressed = message;
648 if (message == WM_XBUTTONUP) {
649 button_pressed = GET_XBUTTON_WPARAM(wparam);
650 }
651 xPos = GET_X_LPARAM(lparam);
652 yPos = GET_Y_LPARAM(lparam);
653 OnPointerUp(static_cast<double>(xPos), static_cast<double>(yPos),
654 device_kind, kDefaultPointerDeviceId, button_pressed);
655 break;
656 case WM_MOUSEWHEEL:
657 OnScroll(0.0,
658 -(static_cast<short>(HIWORD(wparam)) /
659 static_cast<double>(WHEEL_DELTA)),
660 kFlutterPointerDeviceKindMouse, kDefaultPointerDeviceId);
661 break;
662 case WM_MOUSEHWHEEL:
663 OnScroll((static_cast<short>(HIWORD(wparam)) /
664 static_cast<double>(WHEEL_DELTA)),
665 0.0, kFlutterPointerDeviceKindMouse, kDefaultPointerDeviceId);
666 break;
667 case WM_GETOBJECT: {
668 LRESULT lresult = OnGetObject(message, wparam, lparam);
669 if (lresult) {
670 return lresult;
671 }
672 break;
673 }
674 case WM_TIMER:
675 if (wparam == kDirectManipulationTimer) {
676 direct_manipulation_owner_->Update();
677 return 0;
678 }
679 break;
680 case DM_POINTERHITTEST: {
681 if (direct_manipulation_owner_) {
682 UINT contact_id = GET_POINTERID_WPARAM(wparam);
683 POINTER_INPUT_TYPE pointer_type;
684 if (windows_proc_table_->GetPointerType(contact_id, &pointer_type) &&
685 pointer_type == PT_TOUCHPAD) {
686 direct_manipulation_owner_->SetContact(contact_id);
687 }
688 }
689 break;
690 }
691 case WM_INPUTLANGCHANGE:
692 // TODO(cbracken): pass this to TextInputManager to aid with
693 // language-specific issues.
694 break;
695 case WM_IME_SETCONTEXT:
696 OnImeSetContext(message, wparam, lparam);
697 // Strip the ISC_SHOWUICOMPOSITIONWINDOW bit from lparam before passing it
698 // to DefWindowProc() so that the composition window is hidden since
699 // Flutter renders the composing string itself.
700 result_lparam &= ~ISC_SHOWUICOMPOSITIONWINDOW;
701 break;
702 case WM_IME_STARTCOMPOSITION:
703 OnImeStartComposition(message, wparam, lparam);
704 // Suppress further processing by DefWindowProc() so that the default
705 // system IME style isn't used, but rather the one set in the
706 // WM_IME_SETCONTEXT handler.
707 return TRUE;
708 case WM_IME_COMPOSITION:
709 OnImeComposition(message, wparam, lparam);
710 if (lparam & GCS_RESULTSTR || lparam & GCS_COMPSTR) {
711 // Suppress further processing by DefWindowProc() since otherwise it
712 // will emit the result string as WM_CHAR messages on commit. Instead,
713 // committing the composing text to the EditableText string is handled
714 // in TextInputModel::CommitComposing, triggered by
715 // OnImeEndComposition().
716 return TRUE;
717 }
718 break;
719 case WM_IME_ENDCOMPOSITION:
720 OnImeEndComposition(message, wparam, lparam);
721 return TRUE;
722 case WM_IME_REQUEST:
723 OnImeRequest(message, wparam, lparam);
724 break;
725 case WM_UNICHAR: {
726 // Tell third-pary app, we can support Unicode.
727 if (wparam == UNICODE_NOCHAR)
728 return TRUE;
729 // DefWindowProc will send WM_CHAR for this WM_UNICHAR.
730 break;
731 }
732 case WM_THEMECHANGED:
733 OnThemeChange();
734 break;
735 case WM_DEADCHAR:
736 case WM_SYSDEADCHAR:
737 case WM_CHAR:
738 case WM_SYSCHAR:
739 case WM_KEYDOWN:
740 case WM_SYSKEYDOWN:
741 case WM_KEYUP:
742 case WM_SYSKEYUP:
743 if (keyboard_manager_->HandleMessage(message, wparam, lparam)) {
744 return 0;
745 }
746 break;
747 }
748
749 return Win32DefWindowProc(window_handle_, message, wparam, result_lparam);
750 }
flutter::FlutterWindow::OnPointerLeave
virtual void OnPointerLeave(double x, double y, FlutterPointerDeviceKind device_kind, int32_t device_id)
Definition: flutter_window.cc:200
flutter::FlutterWindow::OnThemeChange
virtual void OnThemeChange()
Definition: flutter_window.cc:308
flutter::FlutterWindow::OnImeRequest
virtual void OnImeRequest(UINT const message, WPARAM const wparam, LPARAM const lparam)
Definition: flutter_window.cc:865
flutter::FlutterWindow::Win32DefWindowProc
virtual LRESULT Win32DefWindowProc(HWND hWnd, UINT Msg, WPARAM wParam, LPARAM lParam)
Definition: flutter_window.cc:897
flutter::FlutterWindow::OnImeStartComposition
virtual void OnImeStartComposition(UINT const message, WPARAM const wparam, LPARAM const lparam)
Definition: flutter_window.cc:816
flutter::FlutterWindow::OnScroll
virtual void OnScroll(double delta_x, double delta_y, FlutterPointerDeviceKind device_kind, int32_t device_id)
Definition: flutter_window.cc:243
flutter::FlutterWindow::OnPointerUp
virtual void OnPointerUp(double x, double y, FlutterPointerDeviceKind device_kind, int32_t device_id, UINT button)
Definition: flutter_window.cc:187
flutter::FlutterWindow::OnPaint
virtual void OnPaint()
Definition: flutter_window.cc:159
flutter::FlutterWindow::direct_manipulation_owner_
std::unique_ptr< DirectManipulationOwner > direct_manipulation_owner_
Definition: flutter_window.h:275
flutter::FlutterWindow::OnPointerDown
virtual void OnPointerDown(double x, double y, FlutterPointerDeviceKind device_kind, int32_t device_id, UINT button)
Definition: flutter_window.cc:174
flutter::FlutterWindow::OnImeSetContext
virtual void OnImeSetContext(UINT const message, WPARAM const wparam, LPARAM const lparam)
Definition: flutter_window.cc:808
flutter::FlutterWindow::OnWindowStateEvent
virtual void OnWindowStateEvent(WindowStateEvent event)
Definition: flutter_window.cc:326
flutter::FlutterWindow::OnPointerMove
virtual void OnPointerMove(double x, double y, FlutterPointerDeviceKind device_kind, int32_t device_id, int modifiers_state)
Definition: flutter_window.cc:165
flutter::FlutterWindow::OnImeComposition
virtual void OnImeComposition(UINT const message, WPARAM const wparam, LPARAM const lparam)
Definition: flutter_window.cc:823
flutter::FlutterWindow::OnDpiScale
virtual void OnDpiScale(unsigned int dpi)
Definition: flutter_window.cc:149
flutter::FlutterWindow::OnGetObject
virtual LRESULT OnGetObject(UINT const message, WPARAM const wparam, LPARAM const lparam)
Definition: flutter_window.cc:752
flutter::FlutterWindow::OnImeEndComposition
virtual void OnImeEndComposition(UINT const message, WPARAM const wparam, LPARAM const lparam)
Definition: flutter_window.cc:858
flutter::SequentialIdGenerator::ReleaseNumber
void ReleaseNumber(uint32_t number)
Definition: sequential_id_generator.cc:47
flutter::SequentialIdGenerator::GetGeneratedId
uint32_t GetGeneratedId(uint32_t number)
Definition: sequential_id_generator.cc:32
message
Win32Message message
Definition: keyboard_unittests.cc:137
flutter::kShift
constexpr int kShift
Definition: keyboard_utils.h:14
flutter::WindowStateEvent::kHide
@ kHide
flutter::WindowStateEvent::kUnfocus
@ kUnfocus
flutter::WindowStateEvent::kShow
@ kShow
flutter::WindowStateEvent::kFocus
@ kFocus
flutter::kControl
constexpr int kControl
Definition: keyboard_utils.h:15

References flutter::GetDpiForHWND(), flutter::kControl, flutter::kFocus, flutter::kHide, flutter::kShift, flutter::kShow, flutter::kUnfocus, and message.

## ◆ InitializeChild()

void flutter::FlutterWindow::InitializeChild | ( | const char * | title,
|  | unsigned int | width,
|  | unsigned int | height
| ) |  |

Definition at line 395 of file flutter_window.cc.

397 {
398 Destroy();
399 std::wstring converted_title = NarrowToWide(title);
400
401 WNDCLASS window_class = RegisterWindowClass(converted_title);
402
403 auto* result = CreateWindowEx(
404 0, window_class.lpszClassName, converted_title.c_str(),
405 WS_CHILD | WS_VISIBLE, CW_DEFAULT, CW_DEFAULT, width, height,
406 HWND_MESSAGE, nullptr, window_class.hInstance, this);
407
408 if (result == nullptr) {
409 auto error = GetLastError();
410 LPWSTR message = nullptr;
411 size_t size = FormatMessageW(
412 FORMAT_MESSAGE_ALLOCATE_BUFFER | FORMAT_MESSAGE_FROM_SYSTEM |
413 FORMAT_MESSAGE_IGNORE_INSERTS,
414 NULL, error, MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT),
415 reinterpret_cast<LPWSTR>(&message), 0, NULL);
416 OutputDebugString(message);
417 LocalFree(message);
418 }
419 SetUserObjectInformationA(GetCurrentProcess(),
420 UOI_TIMERPROC_EXCEPTION_SUPPRESSION, FALSE, 1);
421 // SetTimer is not precise, if a 16 ms interval is requested, it will instead
422 // often fire in an interval of 32 ms. Providing a value of 14 will ensure it
423 // runs every 16 ms, which will allow for 60 Hz trackpad gesture events, which
424 // is the maximal frequency supported by SetTimer.
425 SetTimer(result, kDirectManipulationTimer, 14, nullptr);
426 direct_manipulation_owner_ = std::make_unique<DirectManipulationOwner>(this);
427 direct_manipulation_owner_->Init(width, height);
428 }
flutter::FlutterWindow::NarrowToWide
std::wstring NarrowToWide(const char *source)
Definition: flutter_window.cc:452

References direct_manipulation_owner_, message, and NarrowToWide().

Referenced by FlutterWindow().

## ◆ NarrowToWide()

std::wstring flutter::FlutterWindow::NarrowToWide | ( | const char * | source | ) |
| protected

Definition at line 452 of file flutter_window.cc.

452 {
453 size_t length = strlen(source);
454 size_t outlen = 0;
455 std::wstring wideTitle(length, L'#');
456 mbstowcs_s(&outlen, &wideTitle[0], length + 1, source, length);
457 return wideTitle;
458 }

Referenced by InitializeChild().

## ◆ OnBitmapSurfaceCleared()

bool flutter::FlutterWindow::OnBitmapSurfaceCleared | ( |  | ) |
| overridevirtual

Implements flutter::WindowBindingHandler.

Definition at line 268 of file flutter_window.cc.

268 {
269 HDC dc = ::GetDC(GetWindowHandle());
270 bool result = ::PatBlt(dc, 0, 0, current_width_, current_height_, BLACKNESS);
271 ::ReleaseDC(GetWindowHandle(), dc);
272 return result;
273 }

References GetWindowHandle().

## ◆ OnBitmapSurfaceUpdated()

bool flutter::FlutterWindow::OnBitmapSurfaceUpdated | ( | const void * | allocation,
|  | size_t | row_bytes,
|  | size_t | height
| ) |  |
| overridevirtual

Implements flutter::WindowBindingHandler.

Definition at line 275 of file flutter_window.cc.

277 {
278 HDC dc = ::GetDC(GetWindowHandle());
279 BITMAPINFO bmi = {};
280 bmi.bmiHeader.biSize = sizeof(BITMAPINFOHEADER);
281 bmi.bmiHeader.biWidth = row_bytes / 4;
282 bmi.bmiHeader.biHeight = -height;
283 bmi.bmiHeader.biPlanes = 1;
284 bmi.bmiHeader.biBitCount = 32;
285 bmi.bmiHeader.biCompression = BI_RGB;
286 bmi.bmiHeader.biSizeImage = 0;
287 int ret = ::SetDIBitsToDevice(dc, 0, 0, row_bytes / 4, height, 0, 0, 0,
288 height, allocation, &bmi, DIB_RGB_COLORS);
289 ::ReleaseDC(GetWindowHandle(), dc);
290 return ret != 0;
291 }

References GetWindowHandle().

Referenced by flutter::testing::TEST_F().

## ◆ OnComposeBegin()

void flutter::FlutterWindow::OnComposeBegin | ( |  | ) |
| virtual

Definition at line 222 of file flutter_window.cc.

222 {
223 binding_handler_delegate_->OnComposeBegin();
224 }
flutter::WindowBindingHandlerDelegate::OnComposeBegin
virtual void OnComposeBegin()=0

References flutter::WindowBindingHandlerDelegate::OnComposeBegin().

Referenced by OnImeStartComposition().

## ◆ OnComposeChange()

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

Definition at line 234 of file flutter_window.cc.

235 {
236 binding_handler_delegate_->OnComposeChange(text, cursor_pos);
237 }
flutter::WindowBindingHandlerDelegate::OnComposeChange
virtual void OnComposeChange(const std::u16string &text, int cursor_pos)=0
text
std::u16string text
Definition: keyboard_unittests.cc:332

References flutter::WindowBindingHandlerDelegate::OnComposeChange(), and text.

Referenced by OnImeComposition().

## ◆ OnComposeCommit()

void flutter::FlutterWindow::OnComposeCommit | ( |  | ) |
| virtual

Definition at line 226 of file flutter_window.cc.

226 {
227 binding_handler_delegate_->OnComposeCommit();
228 }
flutter::WindowBindingHandlerDelegate::OnComposeCommit
virtual void OnComposeCommit()=0

References flutter::WindowBindingHandlerDelegate::OnComposeCommit().

Referenced by OnImeComposition().

## ◆ OnComposeEnd()

void flutter::FlutterWindow::OnComposeEnd | ( |  | ) |
| virtual

Definition at line 230 of file flutter_window.cc.

230 {
231 binding_handler_delegate_->OnComposeEnd();
232 }
flutter::WindowBindingHandlerDelegate::OnComposeEnd
virtual void OnComposeEnd()=0

References flutter::WindowBindingHandlerDelegate::OnComposeEnd().

Referenced by OnImeEndComposition().

## ◆ OnCursorRectUpdated()

void flutter::FlutterWindow::OnCursorRectUpdated | ( | const Rect & | rect | ) |
| overridevirtual

Implements flutter::WindowBindingHandler.

Definition at line 256 of file flutter_window.cc.

256 {
257 // Convert the rect from Flutter logical coordinates to device coordinates.
258 auto scale = GetDpiScale();
259 Point origin(rect.left() * scale, rect.top() * scale);
260 Size size(rect.width() * scale, rect.height() * scale);
261 UpdateCursorRect(Rect(origin, size));
262 }
flutter::FlutterWindow::UpdateCursorRect
virtual void UpdateCursorRect(const Rect &rect)
Definition: flutter_window.cc:877
flutter::FlutterWindow::GetDpiScale
virtual float GetDpiScale() override
Definition: flutter_window.cc:127

References GetDpiScale(), flutter::Rect::height(), flutter::Rect::left(), flutter::Rect::top(), UpdateCursorRect(), and flutter::Rect::width().

## ◆ OnDpiScale()

void flutter::FlutterWindow::OnDpiScale | ( | unsigned int | dpi | ) |
| virtual

Definition at line 149 of file flutter_window.cc.

149 {};

## ◆ OnGetObject()

LRESULT flutter::FlutterWindow::OnGetObject | ( | UINT const | message,
|  | WPARAM const | wparam,
|  | LPARAM const | lparam
| ) |  |
| protectedvirtual

Definition at line 752 of file flutter_window.cc.

754 {
755 LRESULT reference_result = static_cast<LRESULT>(0L);
756
757 // Only the lower 32 bits of lparam are valid when checking the object id
758 // because it sometimes gets sign-extended incorrectly (but not always).
759 DWORD obj_id = static_cast<DWORD>(static_cast<DWORD_PTR>(lparam));
760
761 bool is_uia_request = static_cast<DWORD>(UiaRootObjectId) == obj_id;
762 bool is_msaa_request = static_cast<DWORD>(OBJID_CLIENT) == obj_id;
763
764 if (is_uia_request || is_msaa_request) {
765 // On Windows, we don't get a notification that the screen reader has been
766 // enabled or disabled. There is an API to query for screen reader state,
767 // but that state isn't set by all screen readers, including by Narrator,
768 // the screen reader that ships with Windows:
769 // https://docs.microsoft.com/en-us/windows/win32/winauto/screen-reader-parameter
770 //
771 // Instead, we enable semantics in Flutter if Windows issues queries for
772 // Microsoft Active Accessibility (MSAA) COM objects.
773 OnUpdateSemanticsEnabled(true);
774 }
775
776 gfx::NativeViewAccessible root_view = GetNativeViewAccessible();
777 // TODO(schectman): UIA is currently disabled by default.
778 // https://github.com/flutter/flutter/issues/114547
779 if (root_view) {
780 CreateAxFragmentRoot();
781 if (is_uia_request) {
782 #ifdef FLUTTER_ENGINE_USE_UIA
783 // Retrieve UIA object for the root view.
784 Microsoft::WRL::ComPtr<IRawElementProviderSimple> root;
785 if (SUCCEEDED(
786 ax_fragment_root_->GetNativeViewAccessible()->QueryInterface(
787 IID_PPV_ARGS(&root)))) {
788 // Return the UIA object via UiaReturnRawElementProvider(). See:
789 // https://docs.microsoft.com/en-us/windows/win32/winauto/wm-getobject
790 reference_result = UiaReturnRawElementProvider(window_handle_, wparam,
791 lparam, root.Get());
792 } else {
793 FML_LOG(ERROR) << "Failed to query AX fragment root.";
794 }
795 #endif // FLUTTER_ENGINE_USE_UIA
796 } else if (is_msaa_request) {
797 // Create the accessibility root if it does not already exist.
798 // Return the IAccessible for the root view.
799 Microsoft::WRL::ComPtr<IAccessible> root;
800 ax_fragment_root_->GetNativeViewAccessible()->QueryInterface(
801 IID_PPV_ARGS(&root));
802 reference_result = LresultFromObject(IID_IAccessible, wparam, root.Get());
803 }
804 }
805 return reference_result;
806 }
flutter::FlutterWindow::OnUpdateSemanticsEnabled
virtual void OnUpdateSemanticsEnabled(bool enabled)
Definition: flutter_window.cc:239
flutter::FlutterWindow::GetNativeViewAccessible
virtual gfx::NativeViewAccessible GetNativeViewAccessible()
Definition: flutter_window.cc:293

References GetNativeViewAccessible(), and OnUpdateSemanticsEnabled().

## ◆ OnImeComposition()

void flutter::FlutterWindow::OnImeComposition | ( | UINT const | message,
|  | WPARAM const | wparam,
|  | LPARAM const | lparam
| ) |  |
| protectedvirtual

Definition at line 823 of file flutter_window.cc.

825 {
826 // Update the IME window position.
827 text_input_manager_->UpdateImeWindow();
828
829 if (lparam == 0) {
830 OnComposeChange(u"", 0);
831 OnComposeCommit();
832 }
833
834 // Process GCS_RESULTSTR at fisrt, because Google Japanese Input and ATOK send
835 // both GCS_RESULTSTR and GCS_COMPSTR to commit composed text and send new
836 // composing text.
837 if (lparam & GCS_RESULTSTR) {
838 // Commit but don't end composing.
839 // Read the committed composing string.
840 long pos = text_input_manager_->GetComposingCursorPosition();
841 std::optional<std::u16string> text = text_input_manager_->GetResultString();
842 if (text) {
843 OnComposeChange(text.value(), pos);
844 OnComposeCommit();
845 }
846 }
847 if (lparam & GCS_COMPSTR) {
848 // Read the in-progress composing string.
849 long pos = text_input_manager_->GetComposingCursorPosition();
850 std::optional<std::u16string> text =
851 text_input_manager_->GetComposingString();
852 if (text) {
853 OnComposeChange(text.value(), pos);
854 }
855 }
856 }
flutter::FlutterWindow::OnComposeCommit
virtual void OnComposeCommit()
Definition: flutter_window.cc:226
flutter::FlutterWindow::OnComposeChange
virtual void OnComposeChange(const std::u16string &text, int cursor_pos)
Definition: flutter_window.cc:234

References OnComposeChange(), OnComposeCommit(), and text.

## ◆ OnImeEndComposition()

void flutter::FlutterWindow::OnImeEndComposition | ( | UINT const | message,
|  | WPARAM const | wparam,
|  | LPARAM const | lparam
| ) |  |
| protectedvirtual

Definition at line 858 of file flutter_window.cc.

860 {
861 text_input_manager_->DestroyImeWindow();
862 OnComposeEnd();
863 }
flutter::FlutterWindow::OnComposeEnd
virtual void OnComposeEnd()
Definition: flutter_window.cc:230

References OnComposeEnd().

## ◆ OnImeRequest()

void flutter::FlutterWindow::OnImeRequest | ( | UINT const | message,
|  | WPARAM const | wparam,
|  | LPARAM const | lparam
| ) |  |
| protectedvirtual

Definition at line 865 of file flutter_window.cc.

867 {
868 // TODO(cbracken): Handle IMR_RECONVERTSTRING, IMR_DOCUMENTFEED,
869 // and IMR_QUERYCHARPOSITION messages.
870 // https://github.com/flutter/flutter/issues/74547
871 }

## ◆ OnImeSetContext()

void flutter::FlutterWindow::OnImeSetContext | ( | UINT const | message,
|  | WPARAM const | wparam,
|  | LPARAM const | lparam
| ) |  |
| protectedvirtual

Definition at line 808 of file flutter_window.cc.

810 {
811 if (wparam != 0) {
812 text_input_manager_->CreateImeWindow();
813 }
814 }

## ◆ OnImeStartComposition()

void flutter::FlutterWindow::OnImeStartComposition | ( | UINT const | message,
|  | WPARAM const | wparam,
|  | LPARAM const | lparam
| ) |  |
| protectedvirtual

Definition at line 816 of file flutter_window.cc.

818 {
819 text_input_manager_->CreateImeWindow();
820 OnComposeBegin();
821 }
flutter::FlutterWindow::OnComposeBegin
virtual void OnComposeBegin()
Definition: flutter_window.cc:222

References OnComposeBegin().

## ◆ OnKey()

void flutter::FlutterWindow::OnKey | ( | int | key,
|  | int | scancode,
|  | int | action,
|  | char32_t | character,
|  | bool | extended,
|  | bool | was_down,
|  | KeyEventCallback | callback
| ) |  |
| overridevirtual

Implements flutter::KeyboardManager::WindowDelegate.

Definition at line 211 of file flutter_window.cc.

217 {
218 binding_handler_delegate_->OnKey(key, scancode, action, character, extended,
219 was_down, std::move(callback));
220 }
flutter::WindowBindingHandlerDelegate::OnKey
virtual void OnKey(int key, int scancode, int action, char32_t character, bool extended, bool was_down, KeyEventCallback callback)=0
callback
FlutterDesktopBinaryReply callback
Definition: flutter_windows_view_unittests.cc:52
extended
bool extended
Definition: keyboard_key_handler_unittests.cc:118
key
int key
Definition: keyboard_key_handler_unittests.cc:114
character
char32_t character
Definition: keyboard_key_handler_unittests.cc:117
action
int action
Definition: keyboard_key_handler_unittests.cc:116
scancode
int scancode
Definition: keyboard_key_handler_unittests.cc:115
was_down
bool was_down
Definition: keyboard_key_handler_unittests.cc:119

References action, callback, character, extended, key, flutter::WindowBindingHandlerDelegate::OnKey(), scancode, and was_down.

## ◆ OnPaint()

void flutter::FlutterWindow::OnPaint | ( |  | ) |
| virtual

Definition at line 159 of file flutter_window.cc.

159 {
160 if (binding_handler_delegate_ != nullptr) {
161 binding_handler_delegate_->OnWindowRepaint();
162 }
163 }
flutter::WindowBindingHandlerDelegate::OnWindowRepaint
virtual void OnWindowRepaint()=0

References flutter::WindowBindingHandlerDelegate::OnWindowRepaint().

## ◆ OnPointerDown()

void flutter::FlutterWindow::OnPointerDown | ( | double | x,
|  | double | y,
|  | FlutterPointerDeviceKind | device_kind,
|  | int32_t | device_id,
|  | UINT | button
| ) |  |
| virtual

Definition at line 174 of file flutter_window.cc.

178 {
179 uint64_t flutter_button = ConvertWinButtonToFlutterButton(button);
180 if (flutter_button != 0) {
181 binding_handler_delegate_->OnPointerDown(
182 x, y, device_kind, device_id,
183 static_cast<FlutterPointerMouseButtons>(flutter_button));
184 }
185 }
flutter::WindowBindingHandlerDelegate::OnPointerDown
virtual void OnPointerDown(double x, double y, FlutterPointerDeviceKind device_kind, int32_t device_id, FlutterPointerMouseButtons button)=0

References flutter::WindowBindingHandlerDelegate::OnPointerDown().

Referenced by flutter::testing::TEST_F().

## ◆ OnPointerLeave()

void flutter::FlutterWindow::OnPointerLeave | ( | double | x,
|  | double | y,
|  | FlutterPointerDeviceKind | device_kind,
|  | int32_t | device_id
| ) |  |
| virtual

Definition at line 200 of file flutter_window.cc.

203 {
204 binding_handler_delegate_->OnPointerLeave(x, y, device_kind, device_id);
205 }
flutter::WindowBindingHandlerDelegate::OnPointerLeave
virtual void OnPointerLeave(double x, double y, FlutterPointerDeviceKind device_kind, int32_t device_id)=0

References flutter::WindowBindingHandlerDelegate::OnPointerLeave().

Referenced by flutter::testing::TEST_F().

## ◆ OnPointerMove()

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

Definition at line 165 of file flutter_window.cc.

169 {
170 binding_handler_delegate_->OnPointerMove(x, y, device_kind, device_id,
171 modifiers_state);
172 }
flutter::WindowBindingHandlerDelegate::OnPointerMove
virtual void OnPointerMove(double x, double y, FlutterPointerDeviceKind device_kind, int32_t device_id, int modifiers_state)=0

References flutter::WindowBindingHandlerDelegate::OnPointerMove().

Referenced by flutter::testing::TEST_F().

## ◆ OnPointerUp()

void flutter::FlutterWindow::OnPointerUp | ( | double | x,
|  | double | y,
|  | FlutterPointerDeviceKind | device_kind,
|  | int32_t | device_id,
|  | UINT | button
| ) |  |
| virtual

Definition at line 187 of file flutter_window.cc.

191 {
192 uint64_t flutter_button = ConvertWinButtonToFlutterButton(button);
193 if (flutter_button != 0) {
194 binding_handler_delegate_->OnPointerUp(
195 x, y, device_kind, device_id,
196 static_cast<FlutterPointerMouseButtons>(flutter_button));
197 }
198 }
flutter::WindowBindingHandlerDelegate::OnPointerUp
virtual void OnPointerUp(double x, double y, FlutterPointerDeviceKind device_kind, int32_t device_id, FlutterPointerMouseButtons button)=0

References flutter::WindowBindingHandlerDelegate::OnPointerUp().

Referenced by flutter::testing::TEST_F().

## ◆ OnResetImeComposing()

void flutter::FlutterWindow::OnResetImeComposing | ( |  | ) |
| overridevirtual

Implements flutter::WindowBindingHandler.

Definition at line 264 of file flutter_window.cc.

264 {
265 AbortImeComposing();
266 }
flutter::FlutterWindow::AbortImeComposing
virtual void AbortImeComposing()
Definition: flutter_window.cc:873

References AbortImeComposing().

## ◆ OnResize()

void flutter::FlutterWindow::OnResize | ( | unsigned int | width,
|  | unsigned int | height
| ) |  |
| virtual

Definition at line 153 of file flutter_window.cc.

153 {
154 if (binding_handler_delegate_ != nullptr) {
155 binding_handler_delegate_->OnWindowSizeChanged(width, height);
156 }
157 }
flutter::WindowBindingHandlerDelegate::OnWindowSizeChanged
virtual bool OnWindowSizeChanged(size_t width, size_t height)=0

References flutter::WindowBindingHandlerDelegate::OnWindowSizeChanged().

## ◆ OnScroll()

void flutter::FlutterWindow::OnScroll | ( | double | delta_x,
|  | double | delta_y,
|  | FlutterPointerDeviceKind | device_kind,
|  | int32_t | device_id
| ) |  |
| virtual

Definition at line 243 of file flutter_window.cc.

246 {
247 POINT point;
248 GetCursorPos(&point);
249
250 ScreenToClient(GetWindowHandle(), &point);
251 binding_handler_delegate_->OnScroll(point.x, point.y, delta_x, delta_y,
252 GetScrollOffsetMultiplier(), device_kind,
253 device_id);
254 }
flutter::FlutterWindow::GetScrollOffsetMultiplier
virtual float GetScrollOffsetMultiplier()
Definition: flutter_window.cc:893
flutter::WindowBindingHandlerDelegate::OnScroll
virtual void OnScroll(double x, double y, double delta_x, double delta_y, int scroll_offset_multiplier, FlutterPointerDeviceKind device_kind, int32_t device_id)=0

References GetScrollOffsetMultiplier(), GetWindowHandle(), and flutter::WindowBindingHandlerDelegate::OnScroll().

## ◆ OnText()

void flutter::FlutterWindow::OnText | ( | const std::u16string & | text | ) |
| overridevirtual

Implements flutter::KeyboardManager::WindowDelegate.

Definition at line 207 of file flutter_window.cc.

207 {
208 binding_handler_delegate_->OnText(text);
209 }
flutter::WindowBindingHandlerDelegate::OnText
virtual void OnText(const std::u16string &)=0

References flutter::WindowBindingHandlerDelegate::OnText(), and text.

## ◆ OnThemeChange()

void flutter::FlutterWindow::OnThemeChange | ( |  | ) |
| virtual

Definition at line 308 of file flutter_window.cc.

308 {
309 binding_handler_delegate_->OnHighContrastChanged();
310 }
flutter::WindowBindingHandlerDelegate::OnHighContrastChanged
virtual void OnHighContrastChanged()=0

References flutter::WindowBindingHandlerDelegate::OnHighContrastChanged().

## ◆ OnUpdateSemanticsEnabled()

void flutter::FlutterWindow::OnUpdateSemanticsEnabled | ( | bool | enabled | ) |
| virtual

Definition at line 239 of file flutter_window.cc.

239 {
240 binding_handler_delegate_->OnUpdateSemanticsEnabled(enabled);
241 }
flutter::WindowBindingHandlerDelegate::OnUpdateSemanticsEnabled
virtual void OnUpdateSemanticsEnabled(bool enabled)=0

References flutter::WindowBindingHandlerDelegate::OnUpdateSemanticsEnabled().

Referenced by OnGetObject().

## ◆ OnWindowStateEvent()

void flutter::FlutterWindow::OnWindowStateEvent | ( | WindowStateEvent | event | ) |
| virtual

Definition at line 326 of file flutter_window.cc.

326 {
327 switch (event) {
328 case WindowStateEvent::kShow:
329 restored_ = true;
330 break;
331 case WindowStateEvent::kHide:
332 restored_ = false;
333 focused_ = false;
334 break;
335 case WindowStateEvent::kFocus:
336 focused_ = true;
337 if (binding_handler_delegate_) {
338 binding_handler_delegate_->OnFocus(
339 FlutterViewFocusState::kFocused,
340 FlutterViewFocusDirection::kUndefined);
341 }
342 break;
343 case WindowStateEvent::kUnfocus:
344 focused_ = false;
345 if (binding_handler_delegate_) {
346 binding_handler_delegate_->OnFocus(
347 FlutterViewFocusState::kUnfocused,
348 FlutterViewFocusDirection::kUndefined);
349 }
350 break;
351 }
352 HWND hwnd = GetWindowHandle();
353 if (hwnd && binding_handler_delegate_) {
354 binding_handler_delegate_->OnWindowStateEvent(hwnd, event);
355 }
356 }
flutter::WindowBindingHandlerDelegate::OnWindowStateEvent
virtual void OnWindowStateEvent(HWND hwnd, WindowStateEvent event)=0
flutter::WindowBindingHandlerDelegate::OnFocus
virtual void OnFocus(FlutterViewFocusState focus_state, FlutterViewFocusDirection direction)=0

References GetWindowHandle(), flutter::kFocus, flutter::kHide, flutter::kShow, flutter::kUnfocus, flutter::WindowBindingHandlerDelegate::OnFocus(), and flutter::WindowBindingHandlerDelegate::OnWindowStateEvent().

Referenced by SetView().

## ◆ SetView()

void flutter::FlutterWindow::SetView | ( | WindowBindingHandlerDelegate * | view | ) |
| overridevirtual

Implements flutter::WindowBindingHandler.

Definition at line 114 of file flutter_window.cc.

114 {
115 binding_handler_delegate_ = window;
116 if (direct_manipulation_owner_) {
117 direct_manipulation_owner_->SetBindingHandlerDelegate(window);
118 }
119 if (restored_ && window) {
120 OnWindowStateEvent(WindowStateEvent::kShow);
121 }
122 if (focused_ && window) {
123 OnWindowStateEvent(WindowStateEvent::kFocus);
124 }
125 }

References direct_manipulation_owner_, flutter::kFocus, flutter::kShow, and OnWindowStateEvent().

Referenced by flutter::testing::TEST_F().

## ◆ UpdateCursorRect()

void flutter::FlutterWindow::UpdateCursorRect | ( | const Rect & | rect | ) |
| protectedvirtual

Definition at line 877 of file flutter_window.cc.

877 {
878 text_input_manager_->UpdateCaretRect(rect);
879 }

Referenced by OnCursorRectUpdated().

## ◆ Win32DefWindowProc()

LRESULT flutter::FlutterWindow::Win32DefWindowProc | ( | HWND | hWnd,
|  | UINT | Msg,
|  | WPARAM | wParam,
|  | LPARAM | lParam
| ) |  |
| protectedvirtual

Definition at line 897 of file flutter_window.cc.

900 {
901 return ::DefWindowProc(hWnd, Msg, wParam, lParam);
902 }

## ◆ Win32DispatchMessage()

UINT flutter::FlutterWindow::Win32DispatchMessage | ( | UINT | Msg,
|  | WPARAM | wParam,
|  | LPARAM | lParam
| ) |  |
| overridevirtual

Implements flutter::KeyboardManager::WindowDelegate.

Definition at line 446 of file flutter_window.cc.

448 {
449 return ::SendMessage(window_handle_, Msg, wParam, lParam);
450 }

## ◆ Win32MapVkToChar()

uint32_t flutter::FlutterWindow::Win32MapVkToChar | ( | uint32_t | virtual_key | ) |
| overridevirtual

Implements flutter::KeyboardManager::WindowDelegate.

Definition at line 442 of file flutter_window.cc.

442 {
443 return ::MapVirtualKey(virtual_key, MAPVK_VK_TO_CHAR);
444 }

## ◆ Win32PeekMessage()

BOOL flutter::FlutterWindow::Win32PeekMessage | ( | LPMSG | lpMsg,
|  | UINT | wMsgFilterMin,
|  | UINT | wMsgFilterMax,
|  | UINT | wRemoveMsg
| ) |  |
| overridevirtual

Implements flutter::KeyboardManager::WindowDelegate.

Definition at line 434 of file flutter_window.cc.

437 {
438 return ::PeekMessage(lpMsg, window_handle_, wMsgFilterMin, wMsgFilterMax,
439 wRemoveMsg);
440 }

## Friends And Related Function Documentation

## ◆ WindowAXFragmentRootDelegate

friend class WindowAXFragmentRootDelegate
| friend

Definition at line 376 of file flutter_window.h.

## Member Data Documentation

## ◆ alert_delegate_

std::unique_ptr<AlertPlatformNodeDelegate> flutter::FlutterWindow::alert_delegate_
| protected

Definition at line 268 of file flutter_window.h.

Referenced by GetAlertDelegate().

## ◆ alert_node_

std::unique_ptr<ui::AXPlatformNodeWin> flutter::FlutterWindow::alert_node_
| protected

Definition at line 271 of file flutter_window.h.

Referenced by GetAlert().

## ◆ direct_manipulation_owner_

std::unique_ptr<DirectManipulationOwner> flutter::FlutterWindow::direct_manipulation_owner_
| protected

Definition at line 275 of file flutter_window.h.

Referenced by InitializeChild(), and SetView().

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

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