#include <host_window_sized.h>

Inheritance diagram for flutter::HostWindowSized:

Protected Member Functions
	HostWindowSized (WindowManager window_manager, FlutterWindowsEngine engine, bool resizable)

	~HostWindowSized () override=0

FlutterWindowsViewSizingDelegate *	AsSizingDelegate ()

virtual void	ApplyContentSize (int32_t physical_width, int32_t physical_height)

Protected Member Functions inherited from flutter::HostWindow
void	InitializeFlutterView (HostWindowInitializationParams const &params)

	HostWindow (WindowManager window_manager, FlutterWindowsEngine engine)

virtual LRESULT	HandleMessage (HWND hwnd, UINT message, WPARAM wparam, LPARAM lparam)

void	HandleWindowActivation (HWND hwnd, WPARAM wparam)

void	EnableRecursively (bool enable)

HostWindow *	FindFirstEnabledDescendant () const

WindowArchetype	GetArchetype () const

std::vector< HostWindow * >	GetOwnedWindows () const

void	DisableRecursively ()

	FML_DISALLOW_COPY_AND_ASSIGN (HostWindow)

Protected Attributes
const bool	resizable_

std::shared_ptr< int >	view_alive_

int	physical_width_ = 0

int	physical_height_ = 0

Protected Attributes inherited from flutter::HostWindow
friend	WindowManager

WindowManager *const	window_manager_ = nullptr

FlutterWindowsEngine *	engine_

std::unique_ptr< FlutterWindowsViewController >	view_controller_

WindowArchetype	archetype_ = WindowArchetype::kRegular

HWND	window_handle_

BoxConstraints	box_constraints_

bool	is_being_destroyed_ = false

bool	is_fullscreen_ = false

SavedWindowInfo	saved_window_info_

Microsoft::WRL::ComPtr< ITaskbarList2 >	task_bar_list_

Additional Inherited Members
Public Member Functions inherited from flutter::HostWindow
virtual	~HostWindow ()

HWND	GetWindowHandle () const

HWND	GetFlutterViewWindowHandle () const

void	SetContentSize (const WindowSizeRequest &size)

void	SetConstraints (const WindowConstraints &constraints)

virtual void	SetFullscreen (bool fullscreen, std::optional< FlutterEngineDisplayId > display_id)

virtual bool	GetFullscreen () const

HostWindow *	GetOwnerWindow () const

void	UpdateModalStateLayer ()

Static Public Member Functions inherited from flutter::HostWindow
static std::unique_ptr< HostWindow >	CreateRegularWindow (WindowManager window_manager, FlutterWindowsEngine engine, const WindowSizeRequest &preferred_size, const WindowConstraints &preferred_constraints, LPCWSTR title, bool sized_to_content, bool resizable)

static std::unique_ptr< HostWindow >	CreateDialogWindow (WindowManager window_manager, FlutterWindowsEngine engine, const WindowSizeRequest &preferred_size, const WindowConstraints &preferred_constraints, LPCWSTR title, HWND parent, bool sized_to_content, bool resizable)

static std::unique_ptr< HostWindow >	CreateTooltipWindow (WindowManager window_manager, FlutterWindowsEngine engine, const WindowConstraints &preferred_constraints, GetWindowPositionCallback get_position_callback, HWND parent)

static std::unique_ptr< HostWindow >	CreatePopupWindow (WindowManager window_manager, FlutterWindowsEngine engine, const WindowConstraints &preferred_constraints, GetWindowPositionCallback get_position_callback, HWND parent)

static HostWindow *	GetThisFromHandle (HWND hwnd)

static ActualWindowSize	GetWindowContentSize (HWND hwnd)

Static Protected Member Functions inherited from flutter::HostWindow
static std::optional< Size >	GetWindowSizeForClientSize (WindowsProcTable const &win32, Size const &client_size, std::optional< Size > smallest, std::optional< Size > biggest, DWORD window_style, DWORD extended_window_style, std::optional< HWND > const &owner_hwnd)

static void	FocusRootViewOf (HostWindow *window)

static LRESULT	WndProc (HWND hwnd, UINT message, WPARAM wparam, LPARAM lparam)

Detailed Description

Definition at line 25 of file host_window_sized.h.

Constructor & Destructor Documentation

◆ HostWindowSized()

flutter::HostWindowSized::HostWindowSized	(	WindowManager *	window_manager,
		FlutterWindowsEngine *	engine,
		bool	resizable
	)

protected

Definition at line 13 of file host_window_sized.cc.

     : HostWindow(window_manager, engine),
       resizable_(resizable),
       view_alive_(std::make_shared<int>(0)) {}

◆ ~HostWindowSized()

flutter::HostWindowSized::~HostWindowSized ( )

overrideprotectedpure virtual

Definition at line 20 of file host_window_sized.cc.

                                   {
   // By the time the base destructor runs, the most-derived class must have
   // already reset |view_controller_| (and therefore stopped the raster thread
   // from sizing this object). See the destructor comment in host_window_sized.h
   // for the rationale. If this fires, a HostWindowSized subclass is missing the
   // required |view_controller_.reset()| at the start of its destructor.
   FML_DCHECK(!view_controller_)
       << "HostWindowSized subclass must reset view_controller_ in its "
          "destructor.";
 }

References flutter::HostWindow::view_controller_.

Member Function Documentation

◆ ApplyContentSize()

void flutter::HostWindowSized::ApplyContentSize	(	int32_t	physical_width,
		int32_t	physical_height
	)

protectedvirtual

Reimplemented in flutter::HostWindowTooltip, and flutter::HostWindowPopup.

Definition at line 52 of file host_window_sized.cc.

                                                                 {
   WINDOWINFO window_info = {.cbSize = sizeof(WINDOWINFO)};
   GetWindowInfo(window_handle_, &window_info);
  
   // Convert physical pixels to logical pixels.
   UINT const dpi = GetDpiForHWND(window_handle_);
   double const scale = static_cast<double>(dpi > 0 ? dpi : 96) / 96.0;
   std::optional<Size> const window_size = GetWindowSizeForClientSize(
       *engine_->windows_proc_table(),
       Size(physical_width / scale, physical_height / scale),
       box_constraints_.smallest(), box_constraints_.biggest(),
       window_info.dwStyle, window_info.dwExStyle, nullptr);
  
   if (!window_size) {
     return;
   }
  
   SetWindowPos(window_handle_, NULL, 0, 0, window_size->width(),
                window_size->height(),
                SWP_NOMOVE | SWP_NOZORDER | SWP_NOACTIVATE);
  
   if (resizable_) {
     // For resizable windows, stop tracking content size after the initial
     // frame so subsequent user-initiated resizes are forwarded to Flutter.
     view_controller_->view()->SetSizedToContent(false);
   }
 }

References flutter::HostWindow::box_constraints_, flutter::HostWindow::engine_, flutter::GetDpiForHWND(), flutter::HostWindow::GetWindowSizeForClientSize(), resizable_, flutter::HostWindow::view_controller_, flutter::HostWindow::window_handle_, and flutter::FlutterWindowsEngine::windows_proc_table().

◆ AsSizingDelegate()

FlutterWindowsViewSizingDelegate* flutter::HostWindowSized::AsSizingDelegate ( )

inlineprotected

Definition at line 59 of file host_window_sized.h.

59 { return this; }

Referenced by flutter::HostWindowDialog::HostWindowDialog(), and flutter::HostWindowRegular::HostWindowRegular().

Member Data Documentation

◆ physical_height_

int flutter::HostWindowSized::physical_height_ = 0

protected

Definition at line 78 of file host_window_sized.h.

Referenced by flutter::HostWindowPopup::UpdatePosition(), and flutter::HostWindowTooltip::UpdatePosition().

◆ physical_width_

int flutter::HostWindowSized::physical_width_ = 0

protected

Definition at line 77 of file host_window_sized.h.

Referenced by flutter::HostWindowPopup::UpdatePosition(), and flutter::HostWindowTooltip::UpdatePosition().

◆ resizable_

const bool flutter::HostWindowSized::resizable_

protected

Definition at line 70 of file host_window_sized.h.

Referenced by ApplyContentSize().

◆ view_alive_

std::shared_ptr<int> flutter::HostWindowSized::view_alive_

protected

Definition at line 74 of file host_window_sized.h.

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

shell/platform/windows/host_window_sized.h
shell/platform/windows/host_window_sized.cc

Protected Member Functions

Protected Attributes

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

◆ HostWindowSized()

◆ ~HostWindowSized()

Member Function Documentation

◆ ApplyContentSize()

◆ AsSizingDelegate()

Member Data Documentation

◆ physical_height_

◆ physical_width_

◆ resizable_

◆ view_alive_