flutter::DirectManipulationOwner Class Reference

#include <direct_manipulation.h>

Public Member Functions
	DirectManipulationOwner (FlutterWindow *window)
virtual	~DirectManipulationOwner ()=default
int	Init (unsigned int width, unsigned int height)
void	ResizeViewport (unsigned int width, unsigned int height)
void	SetBindingHandlerDelegate (WindowBindingHandlerDelegate *binding_handler_delegate)
virtual void	SetContact (UINT contactId)
void	Update ()
void	Destroy ()

Public Attributes
WindowBindingHandlerDelegate *	binding_handler_delegate

Detailed Description

Definition at line 22 of file direct_manipulation.h.

Constructor & Destructor Documentation

DirectManipulationOwner()

flutter::DirectManipulationOwner::DirectManipulationOwner ( FlutterWindow *  window )

explicit

Definition at line 176 of file direct_manipulation.cc.

    : window_(window) {}

~DirectManipulationOwner()

virtual flutter::DirectManipulationOwner::~DirectManipulationOwner ( )

virtualdefault

Member Function Documentation

Destroy()

void flutter::DirectManipulationOwner::Destroy

(

)

Definition at line 216 of file direct_manipulation.cc.

                                      {
  if (handler_) {
    handler_->owner_ = nullptr;
  }
 
  if (viewport_) {
    WARN_IF_FAILED(viewport_->Disable());
    WARN_IF_FAILED(viewport_->Disable());
    WARN_IF_FAILED(viewport_->RemoveEventHandler(viewportHandlerCookie_));
    WARN_IF_FAILED(viewport_->Abandon());
  }
 
  if (window_ && manager_) {
    WARN_IF_FAILED(manager_->Deactivate(window_->GetWindowHandle()));
  }
 
  handler_ = nullptr;
  viewport_ = nullptr;
  updateManager_ = nullptr;
  manager_ = nullptr;
  window_ = nullptr;
}

References flutter::FlutterWindow::GetWindowHandle(), and WARN_IF_FAILED.

Init()

int flutter::DirectManipulationOwner::Init	(	unsigned int	width,
		unsigned int	height
	)

Definition at line 179 of file direct_manipulation.cc.

                                                                         {
  RETURN_IF_FAILED(CoCreateInstance(CLSID_DirectManipulationManager, nullptr,
                                    CLSCTX_INPROC_SERVER,
                                    IID_IDirectManipulationManager, &manager_));
  RETURN_IF_FAILED(manager_->GetUpdateManager(
      IID_IDirectManipulationUpdateManager, &updateManager_));
  RETURN_IF_FAILED(manager_->CreateViewport(nullptr, window_->GetWindowHandle(),
                                            IID_IDirectManipulationViewport,
                                            &viewport_));
  DIRECTMANIPULATION_CONFIGURATION configuration =
      DIRECTMANIPULATION_CONFIGURATION_INTERACTION |
      DIRECTMANIPULATION_CONFIGURATION_TRANSLATION_X |
      DIRECTMANIPULATION_CONFIGURATION_TRANSLATION_Y |
      DIRECTMANIPULATION_CONFIGURATION_SCALING |
      DIRECTMANIPULATION_CONFIGURATION_TRANSLATION_INERTIA;
  RETURN_IF_FAILED(viewport_->ActivateConfiguration(configuration));
  RETURN_IF_FAILED(viewport_->SetViewportOptions(
      DIRECTMANIPULATION_VIEWPORT_OPTIONS_MANUALUPDATE));
  handler_ = fml::MakeRefCounted<DirectManipulationEventHandler>(this);
  RETURN_IF_FAILED(viewport_->AddEventHandler(
      window_->GetWindowHandle(), handler_.get(), &viewportHandlerCookie_));
  RECT rect = {0, 0, (LONG)width, (LONG)height};
  RETURN_IF_FAILED(viewport_->SetViewportRect(&rect));
  RETURN_IF_FAILED(manager_->Activate(window_->GetWindowHandle()));
  RETURN_IF_FAILED(viewport_->Enable());
  RETURN_IF_FAILED(updateManager_->Update(nullptr));
  return 0;
}

References flutter::FlutterWindow::GetWindowHandle(), and RETURN_IF_FAILED.

ResizeViewport()

void flutter::DirectManipulationOwner::ResizeViewport	(	unsigned int	width,
		unsigned int	height
	)

Definition at line 208 of file direct_manipulation.cc.

                                                                  {
  if (viewport_) {
    RECT rect = {0, 0, (LONG)width, (LONG)height};
    WARN_IF_FAILED(viewport_->SetViewportRect(&rect));
  }
}

References WARN_IF_FAILED.

SetBindingHandlerDelegate()

void flutter::DirectManipulationOwner::SetBindingHandlerDelegate

(

WindowBindingHandlerDelegate *

binding_handler_delegate

)

Definition at line 245 of file direct_manipulation.cc.

                                            {
  binding_handler_delegate = delegate;
}

References binding_handler_delegate.

SetContact()

void flutter::DirectManipulationOwner::SetContact ( UINT  contactId )

virtual

Definition at line 239 of file direct_manipulation.cc.

                                                       {
  if (viewport_) {
    viewport_->SetContact(contactId);
  }
}

Update()

void flutter::DirectManipulationOwner::Update

(

)

Definition at line 250 of file direct_manipulation.cc.

                                     {
  if (updateManager_) {
    HRESULT hr = updateManager_->Update(nullptr);
    if (FAILED(hr)) {
      FML_LOG(ERROR) << "updateManager_->Update failed";
      auto error = GetLastError();
      FML_LOG(ERROR) << error;
      LPWSTR message = nullptr;
      size_t size = FormatMessageW(
          FORMAT_MESSAGE_ALLOCATE_BUFFER | FORMAT_MESSAGE_FROM_SYSTEM |
              FORMAT_MESSAGE_IGNORE_INSERTS,
          NULL, error, MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT),
          reinterpret_cast<LPWSTR>(&message), 0, NULL);
      FML_LOG(ERROR) << WCharBufferToString(message);
    }
  }
}

References message, and flutter::WCharBufferToString().

Member Data Documentation

binding_handler_delegate

WindowBindingHandlerDelegate* flutter::DirectManipulationOwner::binding_handler_delegate

Definition at line 46 of file direct_manipulation.h.

Referenced by flutter::DirectManipulationEventHandler::OnContentUpdated(), flutter::DirectManipulationEventHandler::OnViewportStatusChanged(), and SetBindingHandlerDelegate().

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

• shell/platform/windows/direct_manipulation.h
• shell/platform/windows/direct_manipulation.cc