add cef native render

src/CEF/BrowserWindow.h

@@ -100,6 +100,10 @@ class BrowserWindow : public ClientHandler::Delegate {
   // Returns the window handle.
   virtual ClientWindowHandle GetWindowHandle() const = 0;
 
+#if defined(OS_WIN)
+  virtual LRESULT OnMessage(CefWindowHandle temp_handle, UINT message, WPARAM wParam, LPARAM lParam) = 0;
+#endif
+
   // Returns the browser owned by the window.
   CefRefPtr<CefBrowser> GetBrowser() const;
 

src/CEF/BrowserWindowOsrWin.cpp

@@ -40,7 +40,7 @@ void BrowserWindowOsrWin::GetPopupConfig(CefWindowHandle temp_handle,
 
   windowInfo.SetAsWindowless(temp_handle);
   windowInfo.shared_texture_enabled =
-      osr_window_->settings().shared_texture_enabled;
+      osr_window_->settings().render_type == OsrRendererSettings::OsrRendererType::D3D11;
   windowInfo.external_begin_frame_enabled =
       osr_window_->settings().external_begin_frame_enabled;
 
@@ -109,6 +109,15 @@ ClientWindowHandle BrowserWindowOsrWin::GetWindowHandle() const {
   return osr_hwnd_;
 }
 
+#if defined(OS_WIN)
+LRESULT BrowserWindowOsrWin::OnMessage(HWND temp_handle, UINT message, WPARAM wParam, LPARAM lParam) {
+  if (osr_window_) {
+    return osr_window_->OnMessage(temp_handle, message, wParam, lParam);
+  }
+  return 0;    
+}
+#endif
+
 void BrowserWindowOsrWin::OnBrowserClosed(CefRefPtr<CefBrowser> browser) {
   REQUIRE_MAIN_THREAD();
 

src/CEF/BrowserWindowOsrWin.h

@@ -5,7 +5,7 @@
 #pragma once
 
 #include "CEF/BrowserWindow.h"
-#include "CEF/osr_window_win.h"
+#include "CEF/OsrWindowWin.h"
 
 // Represents a native child window hosting a single off-screen browser
 // instance. The methods of this class must be called on the main thread unless
@@ -42,6 +42,9 @@ class BrowserWindowOsrWin : public BrowserWindow,
   void SetDeviceScaleFactor(float device_scale_factor) override;
   float GetDeviceScaleFactor() const override;
   ClientWindowHandle GetWindowHandle() const override;
+#if defined(OS_WIN)
+    virtual LRESULT OnMessage(CefWindowHandle temp_handle, UINT message, WPARAM wParam, LPARAM lParam) override;
+#endif
 
  private:
   // ClienHandler::Delegate methods.

src/CEF/BrowserWindowStdWin.cpp

@@ -2,12 +2,10 @@
 // reserved. Use of this source code is governed by a BSD-style license that
 // can be found in the LICENSE file.
 
-#include "tests/cefclient/browser/browser_window_std_win.h"
+#include "CEF/BrowserWindowStdWin.h"
 
-#include "tests/cefclient/browser/client_handler_std.h"
+#include "CEF/ClientHandlerStd.h"
-#include "tests/shared/browser/main_message_loop.h"
+#include "CEF/MainMessageLoop.h"
-
-namespace client {
 
 BrowserWindowStdWin::BrowserWindowStdWin(Delegate* delegate,
                                          bool with_controls,
@@ -116,5 +114,3 @@ ClientWindowHandle BrowserWindowStdWin::GetWindowHandle() const {
     return browser_->GetHost()->GetWindowHandle();
   return nullptr;
 }
-
-}  // namespace client

src/CEF/BrowserWindowStdWin.h

@@ -2,13 +2,8 @@
 // reserved. Use of this source code is governed by a BSD-style license that
 // can be found in the LICENSE file.
 
-#ifndef CEF_TESTS_CEFCLIENT_BROWSER_BROWSER_WINDOW_STD_WIN_H_
-#define CEF_TESTS_CEFCLIENT_BROWSER_BROWSER_WINDOW_STD_WIN_H_
-#pragma once
 
-#include "tests/cefclient/browser/browser_window.h"
+#include "CEF/BrowserWindow.h"
-
-namespace client {
 
 // Represents a native child window hosting a single windowed browser instance.
 // The methods of this class must be called on the main thread unless otherwise
@@ -41,11 +36,12 @@ class BrowserWindowStdWin : public BrowserWindow {
   void SetBounds(int x, int y, size_t width, size_t height) override;
   void SetFocus(bool focus) override;
   ClientWindowHandle GetWindowHandle() const override;
+#if defined(OS_WIN)
+  virtual LRESULT OnMessage(CefWindowHandle temp_handle, UINT message, WPARAM wParam, LPARAM lParam) override {
+      return 0;
+  }
+#endif
 
  private:
   DISALLOW_COPY_AND_ASSIGN(BrowserWindowStdWin);
 };
-
-}  // namespace client
-
-#endif  // CEF_TESTS_CEFCLIENT_BROWSER_BROWSER_WINDOW_STD_WIN_H_

src/CEF/ClientHandler.cpp

@@ -975,7 +975,7 @@ CefRefPtr<CefResponseFilter> ClientHandler::GetResourceResponseFilter(
     CefRefPtr<CefResponse> response) {
   CEF_REQUIRE_IO_THREAD();
 
-  return GetResourceResponseFilter(browser, frame, request,
+  return test_runner::GetResourceResponseFilter(browser, frame, request,
                                                 response);
 }
 

src/CEF/ClientHandlerOSR.h

@@ -66,6 +66,7 @@ class ClientHandlerOsr : public ClientHandler,
 
     virtual void UpdateAccessibilityTree(CefRefPtr<CefValue> value) = 0;
     virtual void UpdateAccessibilityLocation(CefRefPtr<CefValue> value) = 0;
+    virtual void OnSize() = 0;  
 
    protected:
     virtual ~OsrDelegate() {}

src/CEF/HumanAppContextImpl.cpp

@@ -133,7 +133,7 @@ HumanAppContextImpl::HumanAppContextImpl(CefRefPtr<CefCommandLine> command_line,
 
   if (background_color_ == 0 && !use_views_) {
     // Set an explicit background color.
-    background_color_ = CefColorSetARGB(255, 255, 255, 255);
+    background_color_ = CefColorSetARGB(0, 255, 255, 255);
   }
 
   // |browser_background_color_| should remain 0 to enable transparent painting.
@@ -220,7 +220,8 @@ void HumanAppContextImpl::PopulateOsrSettings(OsrRendererSettings* settings) {
       command_line_->HasSwitch(kShowUpdateRect);
 
 #if defined(OS_WIN)
-  settings->shared_texture_enabled = shared_texture_enabled_;
+  settings->render_type = shared_texture_enabled_ ?
+    OsrRendererSettings::OsrRendererType::D3D11 : OsrRendererSettings::OsrRendererType::Navtive;
 #endif
   settings->external_begin_frame_enabled = external_begin_frame_enabled_;
   settings->begin_frame_rate = windowless_frame_rate_;

src/CEF/HumanAppContextImpl.h

@@ -10,6 +10,7 @@
 #include "include/cef_app.h"
 #include "include/cef_command_line.h"
 #include "CEF/HumanAppContext.h"
+#include "CEF/RootWindoManager.h"
 
 
 

src/CEF/Main.cpp

@@ -1,6 +1,7 @@
-#if 1
+
 #include <Windows.h>
 
+#include "HumanAppContextImpl.h"
 #include "Core/Core.h"
 
 #include "include/cef_command_line.h"
@@ -8,6 +9,11 @@
 #include "CEF/HumanAppBrowser.h"
 #include "CEF/HumanAppRenderer.h"
 #include "CEF/HumanAppOther.h"
+#include "CEF/MainMessageLoopMultithreadedWin.h"
+#include "CEF/MainMessageLoopExternalPump.h"
+#include "CEF/TestRunner.h"
+#include "CEF/RootWindow.h"
+#include "CEF/HumanAppSwitches.h"
 
 
 static int APIENTRY wWinMain(_In_ HINSTANCE hInstance, _In_opt_ HINSTANCE hPrevInstance,
@@ -31,32 +37,23 @@ static int APIENTRY wWinMain(_In_ HINSTANCE hInstance, _In_opt_ HINSTANCE hPrevI
     // Provide CEF with command-line arguments.
     CefMainArgs main_args(hInstance);
 
-    // CEF applications have multiple sub-processes (render, GPU, etc) that share
-    // the same executable. This function checks the command-line and, if this is
-    // a sub-process, executes the appropriate logic.
-    int exit_code = CefExecuteProcess(main_args, nullptr, sandbox_info);
-    if (exit_code >= 0) {
-        // The sub-process has completed so return here.
-        return exit_code;
-    }
-
     // Parse command-line arguments for use in this method.
     CefRefPtr<CefCommandLine> command_line = CefCommandLine::CreateCommandLine();
     command_line->InitFromString(::GetCommandLineW());
 
-    // Specify CEF global settings here.
+//     // Specify CEF global settings here.
-    CefSettings settings;
+//     CefSettings settings;
-
+//
-    if (command_line->HasSwitch("enable-chrome-runtime")) {
+//     if (command_line->HasSwitch("enable-chrome-runtime")) {
-        // Enable experimental Chrome runtime. See issue #2969 for details.
+//         // Enable experimental Chrome runtime. See issue #2969 for details.
-        settings.chrome_runtime = true;
+//         settings.chrome_runtime = true;
-    }
+//     }
-
+//
-#if !defined(CEF_USE_SANDBOX)
+// #if !defined(CEF_USE_SANDBOX)
-    settings.no_sandbox = true;
+//     settings.no_sandbox = true;
-#endif
+// #endif
-
+//
-    // SimpleApp implements application-level callbacks for the browser process.
+//     // SimpleApp implements application-level callbacks for the browser process.
     // It will create the first browser instance in OnContextInitialized() after
     // CEF has initialized.
     CefRefPtr<CefApp> app;
@@ -68,16 +65,64 @@ static int APIENTRY wWinMain(_In_ HINSTANCE hInstance, _In_opt_ HINSTANCE hPrevI
     else if (process_type == HumanApp::OtherProcess)
         app = new HumanAppOther();
 
-    // Initialize CEF.
+    int exit_code = CefExecuteProcess(main_args, app, sandbox_info);
-    CefInitialize(main_args, settings, app.get(), sandbox_info);
+    if (exit_code >= 0)
+        return exit_code;
 
-    // Run the CEF message loop. This will block until CefQuitMessageLoop() is
+    // Create the main context object.
-    // called.
+    auto context = std::make_unique<HumanAppContextImpl>(command_line, true);
-    CefRunMessageLoop();
+
+    CefSettings settings;
+
+#if !defined(CEF_USE_SANDBOX)
+    settings.no_sandbox = true;
+#endif
+
+    // Populate the settings based on command line arguments.
+    context->PopulateSettings(&settings);
+
+    settings.windowless_rendering_enabled = true;
+    settings.background_color = CefColorSetARGB(0, 0, 0, 0);
+
+    // Create the main message loop object.
+    std::unique_ptr<MainMessageLoop> message_loop;
+    if (settings.multi_threaded_message_loop)
+        message_loop.reset(new MainMessageLoopMultithreadedWin);
+    else if (settings.external_message_pump)
+        message_loop = MainMessageLoopExternalPump::Create();
+    else
+        message_loop.reset(new MainMessageLoopStd);
+
+    // Initialize CEF.
+    context->Initialize(main_args, settings, app, sandbox_info);
+
+    // Register scheme handlers.
+    test_runner::RegisterSchemeHandlers();
+
+    auto window_config = std::make_unique<RootWindowConfig>();
+    window_config->always_on_top =
+        command_line->HasSwitch(kAlwaysOnTop);
+    window_config->with_controls = 
+        command_line->HasSwitch(kHideControls);
+    window_config->with_osr = 
+        settings.windowless_rendering_enabled ? true : false;
+
+    window_config->url = "file:///C:/Users/jiege/Downloads/lrc%20demo/lrc%20demo.html";
+
+    // Create the first window.
+    context->GetRootWindowManager()->CreateRootWindow(std::move(window_config));
+
+    // Run the message loop. This will block until Quit() is called by the
+    // RootWindowManager after all windows have been destroyed.
+    int result = message_loop->Run();
 
     // Shut down CEF.
-    CefShutdown();
+    context->Shutdown();
 
-    return 0;
+    // Release objects in reverse order of creation.
+    message_loop.reset();
+    context.reset();
+
+    return result;
 }
-#endif 
+

src/CEF/MainMessageLoopMultithreadedWin.cpp

@@ -0,0 +1,163 @@
+// Copyright (c) 2015 The Chromium Embedded Framework Authors. All rights
+// reserved. Use of this source code is governed by a BSD-style license that
+// can be found in the LICENSE file.
+
+#include "CEF/MainMessageLoopMultithreadedWin.h"
+
+#include "include/base/cef_callback.h"
+#include "include/base/cef_logging.h"
+#include "include/cef_app.h"
+#include "CEF/resource.h"
+#include "CEF/UtilWin.h"
+
+const wchar_t kWndClass[] = L"Client_MessageWindow";
+const wchar_t kTaskMessageName[] = L"Client_CustomTask";
+
+MainMessageLoopMultithreadedWin::MainMessageLoopMultithreadedWin()
+    : thread_id_(base::PlatformThread::CurrentId()),
+      task_message_id_(RegisterWindowMessage(kTaskMessageName)),
+      dialog_hwnd_(nullptr),
+      message_hwnd_(nullptr) {}
+
+MainMessageLoopMultithreadedWin::~MainMessageLoopMultithreadedWin() {
+  DCHECK(RunsTasksOnCurrentThread());
+  DCHECK(!message_hwnd_);
+  DCHECK(queued_tasks_.empty());
+}
+
+int MainMessageLoopMultithreadedWin::Run() {
+  DCHECK(RunsTasksOnCurrentThread());
+
+  HINSTANCE hInstance = ::GetModuleHandle(nullptr);
+
+  {
+    base::AutoLock lock_scope(lock_);
+
+    // Create the hidden window for message processing.
+    message_hwnd_ = CreateMessageWindow(hInstance);
+    CHECK(message_hwnd_);
+
+    // Store a pointer to |this| in the window's user data.
+    SetUserDataPtr(message_hwnd_, this);
+
+    // Execute any tasks that are currently queued.
+    while (!queued_tasks_.empty()) {
+      PostTaskInternal(queued_tasks_.front());
+      queued_tasks_.pop();
+    }
+  }
+
+  HACCEL hAccelTable =
+      LoadAccelerators(hInstance, MAKEINTRESOURCE(IDC_CEFCLIENT));
+
+  MSG msg;
+
+  // Run the application message loop.
+  while (GetMessage(&msg, nullptr, 0, 0)) {
+    // Allow processing of dialog messages.
+    if (dialog_hwnd_ && IsDialogMessage(dialog_hwnd_, &msg))
+      continue;
+
+    if (!TranslateAccelerator(msg.hwnd, hAccelTable, &msg)) {
+      TranslateMessage(&msg);
+      DispatchMessage(&msg);
+    }
+  }
+
+  {
+    base::AutoLock lock_scope(lock_);
+
+    // Destroy the message window.
+    DestroyWindow(message_hwnd_);
+    message_hwnd_ = nullptr;
+  }
+
+  return static_cast<int>(msg.wParam);
+}
+
+void MainMessageLoopMultithreadedWin::Quit() {
+  // Execute PostQuitMessage(0) on the main thread.
+  PostClosure(base::BindOnce(::PostQuitMessage, 0));
+}
+
+void MainMessageLoopMultithreadedWin::PostTask(CefRefPtr<CefTask> task) {
+  base::AutoLock lock_scope(lock_);
+  PostTaskInternal(task);
+}
+
+bool MainMessageLoopMultithreadedWin::RunsTasksOnCurrentThread() const {
+  return (thread_id_ == base::PlatformThread::CurrentId());
+}
+
+void MainMessageLoopMultithreadedWin::SetCurrentModelessDialog(
+    HWND hWndDialog) {
+  DCHECK(RunsTasksOnCurrentThread());
+
+#if DCHECK_IS_ON()
+  if (hWndDialog) {
+    // A new dialog reference should not be set while one is currently set.
+    DCHECK(!dialog_hwnd_);
+  }
+#endif
+  dialog_hwnd_ = hWndDialog;
+}
+
+// static
+HWND MainMessageLoopMultithreadedWin::CreateMessageWindow(HINSTANCE hInstance) {
+  WNDCLASSEX wc = {0};
+  wc.cbSize = sizeof(wc);
+  wc.lpfnWndProc = MessageWndProc;
+  wc.hInstance = hInstance;
+  wc.lpszClassName = kWndClass;
+  RegisterClassEx(&wc);
+
+  return CreateWindow(kWndClass, 0, 0, 0, 0, 0, 0, HWND_MESSAGE, 0, hInstance,
+                      0);
+}
+
+// static
+LRESULT CALLBACK
+MainMessageLoopMultithreadedWin::MessageWndProc(HWND hWnd,
+                                                UINT message,
+                                                WPARAM wParam,
+                                                LPARAM lParam) {
+  MainMessageLoopMultithreadedWin* self =
+      GetUserDataPtr<MainMessageLoopMultithreadedWin*>(hWnd);
+
+  if (self && message == self->task_message_id_) {
+    // Execute the task.
+    CefTask* task = reinterpret_cast<CefTask*>(wParam);
+    task->Execute();
+
+    // Release the reference added in PostTaskInternal. This will likely result
+    // in |task| being deleted.
+    task->Release();
+  } else {
+    switch (message) {
+      case WM_NCDESTROY:
+        // Clear the reference to |self|.
+        SetUserDataPtr(hWnd, nullptr);
+        break;
+    }
+  }
+
+  return DefWindowProc(hWnd, message, wParam, lParam);
+}
+
+void MainMessageLoopMultithreadedWin::PostTaskInternal(
+    CefRefPtr<CefTask> task) {
+  lock_.AssertAcquired();
+
+  if (!message_hwnd_) {
+    // Queue the task until the message loop starts running.
+    queued_tasks_.push(task);
+    return;
+  }
+
+  // Add a reference that will be released in MessageWndProc.
+  task->AddRef();
+
+  // Post the task for execution by the message window.
+  PostMessage(message_hwnd_, task_message_id_,
+              reinterpret_cast<WPARAM>(task.get()), 0);
+}

src/CEF/MainMessageLoopMultithreadedWin.h

@@ -0,0 +1,55 @@
+// Copyright (c) 2015 The Chromium Embedded Framework Authors. All rights
+// reserved. Use of this source code is governed by a BSD-style license that
+// can be found in the LICENSE file.
+
+#pragma once
+
+#include <windows.h>
+#include <queue>
+
+#include "include/base/cef_lock.h"
+#include "include/base/cef_platform_thread.h"
+#include "CEF/MainMessageLoop.h"
+
+// Represents the main message loop in the browser process when using multi-
+// threaded message loop mode on Windows. In this mode there is no Chromium
+// message loop running on the main application thread. Instead, this
+// implementation utilizes a hidden message window for running tasks.
+class MainMessageLoopMultithreadedWin : public MainMessageLoop {
+ public:
+  MainMessageLoopMultithreadedWin();
+  ~MainMessageLoopMultithreadedWin();
+
+  // MainMessageLoop methods.
+  int Run() override;
+  void Quit() override;
+  void PostTask(CefRefPtr<CefTask> task) override;
+  bool RunsTasksOnCurrentThread() const override;
+  void SetCurrentModelessDialog(HWND hWndDialog) override;
+
+ private:
+  // Create the message window.
+  static HWND CreateMessageWindow(HINSTANCE hInstance);
+
+  // Window procedure for the message window.
+  static LRESULT CALLBACK MessageWndProc(HWND hWnd,
+                                         UINT message,
+                                         WPARAM wParam,
+                                         LPARAM lParam);
+
+  void PostTaskInternal(CefRefPtr<CefTask> task);
+
+  base::PlatformThreadId thread_id_;
+  UINT task_message_id_;
+
+  // Only accessed on the main thread.
+  HWND dialog_hwnd_;
+
+  base::Lock lock_;
+
+  // Must be protected by |lock_|.
+  HWND message_hwnd_;
+  std::queue<CefRefPtr<CefTask>> queued_tasks_;
+
+  DISALLOW_COPY_AND_ASSIGN(MainMessageLoopMultithreadedWin);
+};

src/CEF/OsrAccessibilityHelper.cpp

@@ -2,10 +2,8 @@
 // 2013 The Chromium Authors. All rights reserved. Use of this source code is
 // governed by a BSD-style license that can be found in the LICENSE file.
 
-#include "tests/cefclient/browser/osr_accessibility_helper.h"
+#include "CEF/OsrAccessibilityHelper.h"
-#include "tests/cefclient/browser/osr_accessibility_node.h"
+#include "CEF/OsrAccessibilityNode.h"
-
-namespace client {
 
 OsrAXTree::OsrAXTree() : root_node_id_(-1) {}
 
@@ -266,5 +264,3 @@ OsrAXNode* OsrAccessibilityHelper::GetNode(const CefString& treeId,
 
   return nullptr;
 }
-
-}  // namespace client

src/CEF/OsrAccessibilityHelper.h

@@ -2,14 +2,10 @@
 // 2013 The Chromium Authors. All rights reserved. Use of this source code is
 // governed by a BSD-style license that can be found in the LICENSE file.
 
-#ifndef CEF_TESTS_CEFCLIENT_BROWSER_OSR_ACCESSIBILITY_HELPER_H_
-#define CEF_TESTS_CEFCLIENT_BROWSER_OSR_ACCESSIBILITY_HELPER_H_
-
 #include <map>
 
 #include "include/cef_browser.h"
 
-namespace client {
 
 class OsrAXNode;
 class OsrAccessibilityHelper;
@@ -75,7 +71,3 @@ class OsrAccessibilityHelper {
   CefRefPtr<CefBrowser> browser_;
   std::map<CefString, OsrAXTree> accessibility_node_map_;
 };
-
-}  // namespace client
-
-#endif  // CEF_TESTS_CEFCLIENT_BROWSER_OSR_ACCESSIBILITY_HELPER_H_

src/CEF/OsrAccessibilityNode.cpp

@@ -0,0 +1,169 @@
+// Copyright 2017 The Chromium Embedded Framework Authors. Portions copyright
+// 2013 The Chromium Authors. All rights reserved. Use of this source code is
+// governed by a BSD-style license that can be found in the LICENSE file.
+
+// Base class implementation for CEF Acccessibility node. This is subclassed and
+// used by both IAccessible/NSAccessibility protocol implementation.
+
+#include "CEF/OsrAccessibilityNode.h"
+
+#include "CEF/OsrAccessibilityHelper.h"
+
+OsrAXNode::OsrAXNode(const CefString& treeId,
+                     int nodeId,
+                     CefRefPtr<CefDictionaryValue> value,
+                     OsrAccessibilityHelper* helper)
+    : tree_id_(treeId),
+      node_id_(nodeId),
+      platform_accessibility_(nullptr),
+      parent_(nullptr),
+      offset_container_id_(-1),
+      accessibility_helper_(helper) {
+  UpdateValue(value);
+}
+
+void OsrAXNode::UpdateLocation(CefRefPtr<CefDictionaryValue> value) {
+  // Update Bounds
+  if (value->HasKey("bounds")) {
+    CefRefPtr<CefDictionaryValue> loc = value->GetDictionary("bounds");
+    if (loc) {
+      location_ = CefRect(loc->GetDouble("x"), loc->GetDouble("y"),
+                          loc->GetDouble("width"), loc->GetDouble("height"));
+    }
+  }
+  // Update offsets
+  if (value->HasKey("offset_container_id")) {
+    offset_container_id_ = OsrAccessibilityHelper::CastToInt(
+        value->GetValue("offset_container_id"));
+  }
+}
+
+void OsrAXNode::UpdateValue(CefRefPtr<CefDictionaryValue> value) {
+  if (value->HasKey("role"))
+    role_ = value->GetString("role");
+
+  if (value->HasKey("child_ids")) {
+    CefRefPtr<CefListValue> childs = value->GetList("child_ids");
+    // Reset child Ids
+    child_ids_.clear();
+    for (size_t idx = 0; idx < childs->GetSize(); idx++)
+      child_ids_.push_back(
+          OsrAccessibilityHelper::CastToInt(childs->GetValue(idx)));
+  }
+  // Update Location
+  if (value->HasKey("location")) {
+    CefRefPtr<CefDictionaryValue> loc = value->GetDictionary("location");
+    if (loc) {
+      location_ = CefRect(loc->GetDouble("x"), loc->GetDouble("y"),
+                          loc->GetDouble("width"), loc->GetDouble("height"));
+    }
+  }
+  // Update offsets
+  if (value->HasKey("offset_container_id")) {
+    offset_container_id_ = OsrAccessibilityHelper::CastToInt(
+        value->GetValue("offset_container_id"));
+  }
+  // Update attributes
+  if (value->HasKey("attributes")) {
+    child_tree_id_ = "";
+
+    attributes_ = value->GetDictionary("attributes");
+
+    if (attributes_) {
+      scroll_.x = attributes_->HasKey("scrollX")
+                      ? OsrAccessibilityHelper::CastToInt(
+                            attributes_->GetValue("scrollX"))
+                      : 0;
+      scroll_.y = attributes_->HasKey("scrollY")
+                      ? OsrAccessibilityHelper::CastToInt(
+                            attributes_->GetValue("scrollY"))
+                      : 0;
+    }
+
+    if (attributes_ && attributes_->HasKey("childTreeId")) {
+      child_tree_id_ = attributes_->GetString("childTreeId");
+    }
+    if (attributes_ && attributes_->HasKey("name"))
+      name_ = attributes_->GetString("name");
+    if (attributes_ && attributes_->HasKey("value"))
+      value_ = attributes_->GetString("value");
+    if (attributes_ && attributes_->HasKey("description"))
+      description_ = attributes_->GetString("description");
+  }
+}
+
+CefWindowHandle OsrAXNode::GetWindowHandle() const {
+  if (accessibility_helper_)
+    return accessibility_helper_->GetWindowHandle();
+  return nullptr;
+}
+
+CefRefPtr<CefBrowser> OsrAXNode::GetBrowser() const {
+  if (accessibility_helper_)
+    return accessibility_helper_->GetBrowser();
+  return nullptr;
+}
+
+void OsrAXNode::SetParent(OsrAXNode* parent) {
+  parent_ = parent;
+}
+
+CefRect OsrAXNode::AxLocation() const {
+  CefRect loc = location_;
+  loc.x -= scroll_.x;
+  loc.y -= scroll_.y;
+  OsrAXNode* offsetNode =
+      accessibility_helper_->GetNode(OsrAXTreeId(), offset_container_id_);
+  if (!offsetNode) {
+    OsrAXNode* p = parent_;
+    while (p) {
+      if (p->OsrAXTreeId() != OsrAXTreeId()) {
+        offsetNode = p;
+        break;
+      }
+      p = p->parent_;
+    }
+  }
+  // Add offset from parent Location
+  if (offsetNode) {
+    CefRect offset = offsetNode->AxLocation();
+    loc.x += offset.x;
+    loc.y += offset.y;
+  }
+  return loc;
+}
+
+int OsrAXNode::GetChildCount() const {
+  int count = static_cast<int>(child_ids_.size());
+  if (!child_tree_id_.empty()) {
+    OsrAXNode* childTreeRootNode =
+        accessibility_helper_->GetTreeRootNode(child_tree_id_);
+    if (childTreeRootNode) {
+      count++;
+    }
+  }
+  return count;
+}
+
+OsrAXNode* OsrAXNode::ChildAtIndex(int index) const {
+  int count = static_cast<int>(child_ids_.size());
+  if (index < count)
+    return accessibility_helper_->GetNode(OsrAXTreeId(), child_ids_[index]);
+  if ((index == count) && (!child_tree_id_.empty())) {
+    OsrAXNode* childTreeRootNode =
+        accessibility_helper_->GetTreeRootNode(child_tree_id_);
+    if (childTreeRootNode) {
+      return childTreeRootNode;
+    }
+  }
+
+  return nullptr;
+}
+
+// Create and return the platform specific OsrAXNode Object
+OsrAXNode* OsrAXNode::CreateNode(const CefString& treeId,
+                                 int nodeId,
+                                 CefRefPtr<CefDictionaryValue> value,
+                                 OsrAccessibilityHelper* helper) {
+  return new OsrAXNode(treeId, nodeId, value, helper);
+}

src/CEF/OsrAccessibilityNode.h

@@ -0,0 +1,116 @@
+// Copyright 2017 The Chromium Embedded Framework Authors. Portions copyright
+// 2013 The Chromium Authors. All rights reserved. Use of this source code is
+// governed by a BSD-style license that can be found in the LICENSE file.
+
+
+#pragma once
+
+#include <vector>
+
+#include "include/cef_browser.h"
+
+#if defined(OS_MAC)
+typedef void CefNativeAccessible;
+#if __OBJC__
+#if __has_feature(objc_arc)
+#define CAST_CEF_NATIVE_ACCESSIBLE_TO_NSOBJECT(accessible) \
+  (__bridge NSObject*)accessible
+#define CAST_NSOBJECT_TO_CEF_NATIVE_ACCESSIBLE(object) \
+  (__bridge CefNativeAccessible*)object
+#else  // __has_feature(objc_arc)
+#define CAST_CEF_NATIVE_ACCESSIBLE_TO_NSOBJECT(accessible) (NSObject*)accessible
+#define CAST_NSOBJECT_TO_CEF_NATIVE_ACCESSIBLE(object) \
+  (__bridge CefNativeAccessible*)object
+#endif  // __has_feature(objc_arc)
+#endif  // __OBJC__
+#elif defined(OS_WIN)
+struct IAccessible;
+typedef IAccessible CefNativeAccessible;
+#else
+#error "Unsupported platform"
+#endif
+
+class OsrAccessibilityHelper;
+
+// OsrAXNode is the base class for implementation for the NSAccessibility
+// protocol for interacting with VoiceOver and other accessibility clients.
+class OsrAXNode {
+ public:
+  // Create and return the platform specific OsrAXNode Object.
+  static OsrAXNode* CreateNode(const CefString& treeId,
+                               int nodeId,
+                               CefRefPtr<CefDictionaryValue> value,
+                               OsrAccessibilityHelper* helper);
+
+  // Update Value.
+  void UpdateValue(CefRefPtr<CefDictionaryValue> value);
+
+  // UpdateLocation
+  void UpdateLocation(CefRefPtr<CefDictionaryValue> value);
+
+  // Fire a platform-specific notification that an event has occurred on
+  // this object.
+  void NotifyAccessibilityEvent(std::string event_type) const;
+
+  // Call Destroy rather than deleting this, because the subclass may
+  // use reference counting.
+  void Destroy();
+
+  // Return NSAccessibility Object for Mac/ IAccessible for Windows
+  CefNativeAccessible* GetNativeAccessibleObject(OsrAXNode* parent);
+
+  CefNativeAccessible* GetParentAccessibleObject() const {
+    return parent_ ? parent_->platform_accessibility_ : nullptr;
+  }
+
+  OsrAccessibilityHelper* GetAccessibilityHelper() const {
+    return accessibility_helper_;
+  }
+
+  int GetChildCount() const;
+
+  // Return the Child at the specified index
+  OsrAXNode* ChildAtIndex(int index) const;
+
+  const CefString& AxRole() const { return role_; }
+
+  const CefString& OsrAXTreeId() const { return tree_id_; }
+
+  int OsrAXNodeId() const { return node_id_; }
+
+  const CefString& AxValue() const { return value_; }
+
+  const CefString& AxName() const { return name_; }
+
+  const CefString& AxDescription() const { return description_; }
+
+  CefRect AxLocation() const;
+
+  CefWindowHandle GetWindowHandle() const;
+
+  CefRefPtr<CefBrowser> GetBrowser() const;
+
+  void SetParent(OsrAXNode* parent);
+
+ protected:
+  OsrAXNode(const CefString& treeId,
+            int nodeId,
+            CefRefPtr<CefDictionaryValue> value,
+            OsrAccessibilityHelper* helper);
+
+  CefString tree_id_;
+  int node_id_;
+  CefString child_tree_id_;
+  CefString role_;
+  CefString value_;
+  CefString name_;
+  CefString description_;
+  CefRect location_;
+  CefPoint scroll_;
+  std::vector<int> child_ids_;
+  CefNativeAccessible* platform_accessibility_;
+  OsrAXNode* parent_;
+  int offset_container_id_;
+  OsrAccessibilityHelper* accessibility_helper_;
+  CefRefPtr<CefDictionaryValue> attributes_;
+};

src/CEF/OsrAccessibilityNodeWin.cpp

@@ -0,0 +1,684 @@
+// Copyright 2017 The Chromium Embedded Framework Authors. Portions copyright
+// 2013 The Chromium Authors. All rights reserved. Use of this source code is
+// governed by a BSD-style license that can be found in the LICENSE file.
+
+// This class implements our accessible proxy object that handles moving
+// data back and forth between MSAA clients and CefClient renderers.
+// Sample implementation based on ui\accessibility\ax_platform_node_win.h
+
+#include "CEF/OsrAccessibilityNode.h"
+
+#if defined(CEF_USE_ATL)
+
+#include <atlbase.h>
+#include <oleacc.h>
+#include <string>
+
+#include "CEF/OsrAccessibilityHelper.h"
+
+// Return CO_E_OBJNOTCONNECTED for accessible objects thar still exists but the
+// window and/or object it references has been destroyed.
+#define DATACHECK(node) (node) ? S_OK : CO_E_OBJNOTCONNECTED
+#define VALID_CHILDID(varChild) ((varChild.vt == VT_I4))
+
+// Helper function to convert a rectangle from client coordinates to screen
+// coordinates.
+void ClientToScreen(HWND hwnd, LPRECT lpRect) {
+  if (lpRect) {
+    POINT ptTL = {lpRect->left, lpRect->top};
+    POINT ptBR = {lpRect->right, lpRect->bottom};
+    // Win32 API only provides the call for a point.
+    ClientToScreen(hwnd, &ptTL);
+    ClientToScreen(hwnd, &ptBR);
+    SetRect(lpRect, ptTL.x, ptTL.y, ptBR.x, ptBR.y);
+  }
+}
+
+// Helper function to convert to MSAARole
+int AxRoleToMSAARole(const std::string& role_string) {
+  if (role_string == "alert")
+    return ROLE_SYSTEM_ALERT;
+  if (role_string == "application")
+    return ROLE_SYSTEM_APPLICATION;
+  if (role_string == "buttonDropDown")
+    return ROLE_SYSTEM_BUTTONDROPDOWN;
+  if (role_string == "popUpButton")
+    return ROLE_SYSTEM_BUTTONMENU;
+  if (role_string == "checkBox")
+    return ROLE_SYSTEM_CHECKBUTTON;
+  if (role_string == "comboBox")
+    return ROLE_SYSTEM_COMBOBOX;
+  if (role_string == "dialog")
+    return ROLE_SYSTEM_DIALOG;
+  if (role_string == "genericContainer")
+    return ROLE_SYSTEM_GROUPING;
+  if (role_string == "group")
+    return ROLE_SYSTEM_GROUPING;
+  if (role_string == "image")
+    return ROLE_SYSTEM_GRAPHIC;
+  if (role_string == "link")
+    return ROLE_SYSTEM_LINK;
+  if (role_string == "locationBar")
+    return ROLE_SYSTEM_GROUPING;
+  if (role_string == "menuBar")
+    return ROLE_SYSTEM_MENUBAR;
+  if (role_string == "menuItem")
+    return ROLE_SYSTEM_MENUITEM;
+  if (role_string == "menuListPopup")
+    return ROLE_SYSTEM_MENUPOPUP;
+  if (role_string == "tree")
+    return ROLE_SYSTEM_OUTLINE;
+  if (role_string == "treeItem")
+    return ROLE_SYSTEM_OUTLINEITEM;
+  if (role_string == "tab")
+    return ROLE_SYSTEM_PAGETAB;
+  if (role_string == "tabList")
+    return ROLE_SYSTEM_PAGETABLIST;
+  if (role_string == "pane")
+    return ROLE_SYSTEM_PANE;
+  if (role_string == "progressIndicator")
+    return ROLE_SYSTEM_PROGRESSBAR;
+  if (role_string == "button")
+    return ROLE_SYSTEM_PUSHBUTTON;
+  if (role_string == "radioButton")
+    return ROLE_SYSTEM_RADIOBUTTON;
+  if (role_string == "scrollBar")
+    return ROLE_SYSTEM_SCROLLBAR;
+  if (role_string == "splitter")
+    return ROLE_SYSTEM_SEPARATOR;
+  if (role_string == "slider")
+    return ROLE_SYSTEM_SLIDER;
+  if (role_string == "staticText")
+    return ROLE_SYSTEM_STATICTEXT;
+  if (role_string == "textField")
+    return ROLE_SYSTEM_TEXT;
+  if (role_string == "titleBar")
+    return ROLE_SYSTEM_TITLEBAR;
+  if (role_string == "toolbar")
+    return ROLE_SYSTEM_TOOLBAR;
+  if (role_string == "webView")
+    return ROLE_SYSTEM_GROUPING;
+  if (role_string == "window")
+    return ROLE_SYSTEM_WINDOW;
+  if (role_string == "client")
+    return ROLE_SYSTEM_CLIENT;
+  // This is the default role for MSAA.
+  return ROLE_SYSTEM_CLIENT;
+}
+
+static inline int MiddleX(const CefRect& rect) {
+  return rect.x + rect.width / 2;
+}
+
+static inline int MiddleY(const CefRect& rect) {
+  return rect.y + rect.height / 2;
+}
+
+struct CefIAccessible : public IAccessible {
+ public:
+  // Implement IUnknown
+  STDMETHODIMP QueryInterface(REFIID riid, void** ppvObject) override;
+  STDMETHODIMP_(ULONG) AddRef() override;
+  STDMETHODIMP_(ULONG) Release() override;
+
+  //
+  // IAccessible methods.
+  //
+  // Retrieves the child element or child object at a given point on the screen.
+  STDMETHODIMP accHitTest(LONG x_left, LONG y_top, VARIANT* child) override;
+
+  // Performs the object's default action.
+  STDMETHODIMP accDoDefaultAction(VARIANT var_id) override;
+
+  // Retrieves the specified object's current screen location.
+  STDMETHODIMP accLocation(LONG* x_left,
+                           LONG* y_top,
+                           LONG* width,
+                           LONG* height,
+                           VARIANT var_id) override;
+
+  // Traverses to another UI element and retrieves the object.
+  STDMETHODIMP accNavigate(LONG nav_dir, VARIANT start, VARIANT* end) override;
+
+  // Retrieves an IDispatch interface pointer for the specified child.
+  STDMETHODIMP get_accChild(VARIANT var_child, IDispatch** disp_child) override;
+
+  // Retrieves the number of accessible children.
+  STDMETHODIMP get_accChildCount(LONG* child_count) override;
+
+  // Retrieves a string that describes the object's default action.
+  STDMETHODIMP get_accDefaultAction(VARIANT var_id,
+                                    BSTR* default_action) override;
+
+  // Retrieves the tooltip description.
+  STDMETHODIMP get_accDescription(VARIANT var_id, BSTR* desc) override;
+
+  // Retrieves the object that has the keyboard focus.
+  STDMETHODIMP get_accFocus(VARIANT* focus_child) override;
+
+  // Retrieves the specified object's shortcut.
+  STDMETHODIMP get_accKeyboardShortcut(VARIANT var_id,
+                                       BSTR* access_key) override;
+
+  // Retrieves the name of the specified object.
+  STDMETHODIMP get_accName(VARIANT var_id, BSTR* name) override;
+
+  // Retrieves the IDispatch interface of the object's parent.
+  STDMETHODIMP get_accParent(IDispatch** disp_parent) override;
+
+  // Retrieves information describing the role of the specified object.
+  STDMETHODIMP get_accRole(VARIANT var_id, VARIANT* role) override;
+
+  // Retrieves the current state of the specified object.
+  STDMETHODIMP get_accState(VARIANT var_id, VARIANT* state) override;
+
+  // Gets the help string for the specified object.
+  STDMETHODIMP get_accHelp(VARIANT var_id, BSTR* help) override;
+
+  // Retrieve or set the string value associated with the specified object.
+  // Setting the value is not typically used by screen readers, but it's
+  // used frequently by automation software.
+  STDMETHODIMP get_accValue(VARIANT var_id, BSTR* value) override;
+  STDMETHODIMP put_accValue(VARIANT var_id, BSTR new_value) override;
+
+  // IAccessible methods not implemented.
+  STDMETHODIMP get_accSelection(VARIANT* selected) override;
+  STDMETHODIMP accSelect(LONG flags_sel, VARIANT var_id) override;
+  STDMETHODIMP get_accHelpTopic(BSTR* help_file,
+                                VARIANT var_id,
+                                LONG* topic_id) override;
+  STDMETHODIMP put_accName(VARIANT var_id, BSTR put_name) override;
+
+  // Implement IDispatch
+  STDMETHODIMP GetTypeInfoCount(unsigned int FAR* pctinfo) override;
+  STDMETHODIMP GetTypeInfo(unsigned int iTInfo,
+                           LCID lcid,
+                           ITypeInfo FAR* FAR* ppTInfo) override;
+  STDMETHODIMP GetIDsOfNames(REFIID riid,
+                             OLECHAR FAR* FAR* rgszNames,
+                             unsigned int cNames,
+                             LCID lcid,
+                             DISPID FAR* rgDispId) override;
+  STDMETHODIMP Invoke(DISPID dispIdMember,
+                      REFIID riid,
+                      LCID lcid,
+                      WORD wFlags,
+                      DISPPARAMS FAR* pDispParams,
+                      VARIANT FAR* pVarResult,
+                      EXCEPINFO FAR* pExcepInfo,
+                      unsigned int FAR* puArgErr) override;
+
+  CefIAccessible(OsrAXNode* node) : ref_count_(0), node_(node) {}
+
+  // Remove the node reference when OsrAXNode is destroyed, so that
+  // MSAA clients get  CO_E_OBJNOTCONNECTED
+  void MarkDestroyed() { node_ = nullptr; }
+
+ protected:
+  virtual ~CefIAccessible() {}
+
+  // Ref Count
+  ULONG ref_count_;
+  // OsrAXNode* proxy object
+  OsrAXNode* node_;
+};
+
+// Implement IUnknown
+// *********************
+
+// Handles ref counting and querying for other supported interfaces.
+// We only support, IUnknown, IDispatch and IAccessible.
+STDMETHODIMP CefIAccessible::QueryInterface(REFIID riid, void** ppvObject) {
+  if (riid == IID_IAccessible)
+    *ppvObject = static_cast<IAccessible*>(this);
+  else if (riid == IID_IDispatch)
+    *ppvObject = static_cast<IDispatch*>(this);
+  else if (riid == IID_IUnknown)
+    *ppvObject = static_cast<IUnknown*>(this);
+  else
+    *ppvObject = nullptr;
+
+  if (*ppvObject)
+    reinterpret_cast<IUnknown*>(*ppvObject)->AddRef();
+
+  return (*ppvObject) ? S_OK : E_NOINTERFACE;
+}
+
+// Increments COM objects refcount required by IUnknown for reference counting
+STDMETHODIMP_(ULONG) CefIAccessible::AddRef() {
+  return InterlockedIncrement((LONG volatile*)&ref_count_);
+}
+
+STDMETHODIMP_(ULONG) CefIAccessible::Release() {
+  ULONG ulRefCnt = InterlockedDecrement((LONG volatile*)&ref_count_);
+  if (ulRefCnt == 0) {
+    // Remove reference from OsrAXNode
+    if (node_)
+      node_->Destroy();
+    delete this;
+  }
+
+  return ulRefCnt;
+}
+
+// Implement IAccessible
+// *********************
+
+// Returns the parent IAccessible in the form of an IDispatch interface.
+STDMETHODIMP CefIAccessible::get_accParent(IDispatch** ppdispParent) {
+  HRESULT retCode = DATACHECK(node_);
+  if (SUCCEEDED(retCode)) {
+    if (ppdispParent) {
+      CefNativeAccessible* parent = node_->GetParentAccessibleObject();
+      if (!parent) {
+        // Find our parent window
+        HWND hWnd = ::GetParent(node_->GetWindowHandle());
+        // if we have a window attempt to get its IAccessible pointer
+        if (hWnd) {
+          AccessibleObjectFromWindow(hWnd, (DWORD)OBJID_CLIENT, IID_IAccessible,
+                                     (void**)(&parent));
+        }
+      }
+
+      if (parent)
+        parent->AddRef();
+      *ppdispParent = parent;
+      retCode = (*ppdispParent) ? S_OK : S_FALSE;
+    }
+  } else {
+    retCode = E_INVALIDARG;
+  }
+  return retCode;
+}
+
+// Returns the number of children we have for this element.
+STDMETHODIMP CefIAccessible::get_accChildCount(long* pcountChildren) {
+  HRESULT retCode = DATACHECK(node_);
+  if (SUCCEEDED(retCode) && pcountChildren) {
+    // Get Child node count for this from Accessibility tree
+    *pcountChildren = node_->GetChildCount();
+  } else {
+    retCode = E_INVALIDARG;
+  }
+  return retCode;
+}
+
+// Returns a child IAccessible object.
+STDMETHODIMP CefIAccessible::get_accChild(VARIANT varChild,
+                                          IDispatch** ppdispChild) {
+  HRESULT retCode = DATACHECK(node_);
+  if (SUCCEEDED(retCode)) {
+    int numChilds = node_->GetChildCount();
+    // Mark Leaf node if there are no child
+    if (numChilds <= 0) {
+      *ppdispChild = nullptr;
+      return S_FALSE;
+    } else {
+      if (ppdispChild && VALID_CHILDID(varChild)) {
+        if (varChild.lVal == CHILDID_SELF) {
+          *ppdispChild = this;
+        } else {
+          // Convert to 0 based index and get Child Node.
+          OsrAXNode* child = node_->ChildAtIndex(varChild.lVal - 1);
+          // Fallback to focused node
+          if (!child)
+            child = node_->GetAccessibilityHelper()->GetFocusedNode();
+
+          *ppdispChild = child->GetNativeAccessibleObject(node_);
+        }
+        if (*ppdispChild == nullptr)
+          retCode = S_FALSE;
+        else
+          (*ppdispChild)->AddRef();
+      }
+    }
+  }
+  return retCode;
+}
+
+// Check and returns the accessible name for element from accessibility tree
+STDMETHODIMP CefIAccessible::get_accName(VARIANT varChild, BSTR* pszName) {
+  HRESULT retCode = DATACHECK(node_);
+  if (SUCCEEDED(retCode)) {
+    if (pszName && VALID_CHILDID(varChild)) {
+      std::wstring name = node_->AxName();
+      CComBSTR bstrResult(name.c_str());
+      *pszName = bstrResult.Detach();
+    }
+  } else {
+    retCode = E_INVALIDARG;
+  }
+  return retCode;
+}
+
+// Check and returns the value for element from accessibility tree
+STDMETHODIMP CefIAccessible::get_accValue(VARIANT varChild, BSTR* pszValue) {
+  HRESULT retCode = DATACHECK(node_);
+  if (SUCCEEDED(retCode)) {
+    if (pszValue && VALID_CHILDID(varChild)) {
+      std::wstring name = node_->AxValue();
+      CComBSTR bstrResult(name.c_str());
+      *pszValue = bstrResult.Detach();
+    }
+  } else {
+    retCode = E_INVALIDARG;
+  }
+  return retCode;
+}
+
+// Check and returns the description for element from accessibility tree
+STDMETHODIMP CefIAccessible::get_accDescription(VARIANT varChild,
+                                                BSTR* pszDescription) {
+  HRESULT retCode = DATACHECK(node_);
+  if (SUCCEEDED(retCode)) {
+    if (pszDescription && VALID_CHILDID(varChild)) {
+      std::wstring name = node_->AxDescription();
+      CComBSTR bstrResult(name.c_str());
+      *pszDescription = bstrResult.Detach();
+    }
+  } else {
+    retCode = E_INVALIDARG;
+  }
+  return retCode;
+}
+
+// Check and returns the MSAA Role for element from accessibility tree
+STDMETHODIMP CefIAccessible::get_accRole(VARIANT varChild, VARIANT* pvarRole) {
+  HRESULT retCode = DATACHECK(node_);
+  if (SUCCEEDED(retCode)) {
+    // Get the accessibilty role and Map to MSAA Role
+    if (pvarRole) {
+      pvarRole->vt = VT_I4;
+      pvarRole->lVal = AxRoleToMSAARole(node_->AxRole());
+    } else {
+      retCode = E_INVALIDARG;
+    }
+  }
+  return retCode;
+}
+
+// Check and returns Accessibility State for element from accessibility tree
+STDMETHODIMP CefIAccessible::get_accState(VARIANT varChild,
+                                          VARIANT* pvarState) {
+  HRESULT retCode = DATACHECK(node_);
+  if (SUCCEEDED(retCode)) {
+    if (pvarState) {
+      pvarState->vt = VT_I4;
+      pvarState->lVal =
+          (GetFocus() == node_->GetWindowHandle()) ? STATE_SYSTEM_FOCUSED : 0;
+      pvarState->lVal |= STATE_SYSTEM_PRESSED;
+      pvarState->lVal |= STATE_SYSTEM_FOCUSABLE;
+
+      // For child
+      if (varChild.lVal == CHILDID_SELF) {
+        DWORD dwStyle = GetWindowLong(node_->GetWindowHandle(), GWL_STYLE);
+        pvarState->lVal |=
+            ((dwStyle & WS_VISIBLE) == 0) ? STATE_SYSTEM_INVISIBLE : 0;
+        pvarState->lVal |=
+            ((dwStyle & WS_DISABLED) > 0) ? STATE_SYSTEM_UNAVAILABLE : 0;
+      }
+    } else {
+      retCode = E_INVALIDARG;
+    }
+  }
+  return retCode;
+}
+
+// Check and returns Accessibility Shortcut if any for element
+STDMETHODIMP CefIAccessible::get_accKeyboardShortcut(
+    VARIANT varChild,
+    BSTR* pszKeyboardShortcut) {
+  HRESULT retCode = DATACHECK(node_);
+  if (SUCCEEDED(retCode)) {
+    if (pszKeyboardShortcut && VALID_CHILDID(varChild))
+      *pszKeyboardShortcut = ::SysAllocString(L"None");
+    else
+      retCode = E_INVALIDARG;
+  }
+  return retCode;
+}
+
+// Return focused element from the accessibility tree
+STDMETHODIMP CefIAccessible::get_accFocus(VARIANT* pFocusChild) {
+  HRESULT retCode = DATACHECK(node_);
+  if (SUCCEEDED(retCode)) {
+    OsrAXNode* focusedNode = node_->GetAccessibilityHelper()->GetFocusedNode();
+    CefNativeAccessible* nativeObj = nullptr;
+    if (focusedNode)
+      nativeObj = focusedNode->GetNativeAccessibleObject(nullptr);
+
+    if (nativeObj) {
+      if (nativeObj == this) {
+        pFocusChild->vt = VT_I4;
+        pFocusChild->lVal = CHILDID_SELF;
+      } else {
+        pFocusChild->vt = VT_DISPATCH;
+        pFocusChild->pdispVal = nativeObj;
+        pFocusChild->pdispVal->AddRef();
+      }
+    } else {
+      pFocusChild->vt = VT_EMPTY;
+    }
+  }
+  return retCode;
+}
+
+// Return a selection list for multiple selection items.
+STDMETHODIMP CefIAccessible::get_accSelection(VARIANT* pvarChildren) {
+  HRESULT retCode = DATACHECK(node_);
+  if (SUCCEEDED(retCode)) {
+    if (pvarChildren)
+      pvarChildren->vt = VT_EMPTY;
+    else
+      retCode = E_INVALIDARG;
+  }
+  return retCode;
+}
+
+// Return a string description of the default action of our element, eg. push
+STDMETHODIMP CefIAccessible::get_accDefaultAction(VARIANT varChild,
+                                                  BSTR* pszDefaultAction) {
+  HRESULT retCode = DATACHECK(node_);
+  if (SUCCEEDED(retCode)) {
+    if (pszDefaultAction && VALID_CHILDID(varChild))
+      *pszDefaultAction = ::SysAllocString(L"Push");
+    else
+      retCode = E_INVALIDARG;
+  }
+  return retCode;
+}
+
+// child item selectionor for an item to take focus.
+STDMETHODIMP CefIAccessible::accSelect(long flagsSelect, VARIANT varChild) {
+  HRESULT retCode = DATACHECK(node_);
+  if (SUCCEEDED(retCode)) {
+    if (VALID_CHILDID(varChild)) {
+      HWND hwnd = node_->GetWindowHandle();
+      // we only support SELFLAG_TAKEFOCUS.
+      if (((flagsSelect & SELFLAG_TAKEFOCUS) > 0) && (GetFocus() == hwnd)) {
+        RECT rcWnd;
+        GetClientRect(hwnd, &rcWnd);
+        InvalidateRect(hwnd, &rcWnd, FALSE);
+      } else {
+        retCode = S_FALSE;
+      }
+    } else {
+      retCode = E_INVALIDARG;
+    }
+  }
+
+  return retCode;
+}
+
+// Returns back the screen coordinates of our element or one of its childs
+STDMETHODIMP CefIAccessible::accLocation(long* pxLeft,
+                                         long* pyTop,
+                                         long* pcxWidth,
+                                         long* pcyHeight,
+                                         VARIANT varChild) {
+  HRESULT retCode = DATACHECK(node_);
+  if (SUCCEEDED(retCode)) {
+    if (pxLeft && pyTop && pcxWidth && pcyHeight && VALID_CHILDID(varChild)) {
+      CefRect loc = node_->AxLocation();
+      RECT rcItem = {loc.x, loc.y, loc.x + loc.width, loc.y + loc.height};
+      HWND hwnd = node_->GetWindowHandle();
+      ClientToScreen(hwnd, &rcItem);
+
+      *pxLeft = rcItem.left;
+      *pyTop = rcItem.top;
+      *pcxWidth = rcItem.right - rcItem.left;
+      *pcyHeight = rcItem.bottom - rcItem.top;
+    } else {
+      retCode = E_INVALIDARG;
+    }
+  }
+  return retCode;
+}
+
+// Allow clients to move the keyboard focus within the control
+// Deprecated
+STDMETHODIMP CefIAccessible::accNavigate(long navDir,
+                                         VARIANT varStart,
+                                         VARIANT* pvarEndUpAt) {
+  return E_NOTIMPL;
+}
+
+// Check if the coordinates provided are within our element or child items.
+STDMETHODIMP CefIAccessible::accHitTest(long xLeft,
+                                        long yTop,
+                                        VARIANT* pvarChild) {
+  HRESULT retCode = DATACHECK(node_);
+  if (SUCCEEDED(retCode)) {
+    if (pvarChild) {
+      pvarChild->vt = VT_EMPTY;
+
+      CefRect loc = node_->AxLocation();
+      RECT rcItem = {loc.x, loc.y, loc.x + loc.width, loc.y + loc.height};
+      POINT pt = {xLeft, yTop};
+
+      ClientToScreen(node_->GetWindowHandle(), &rcItem);
+
+      if (PtInRect(&rcItem, pt)) {
+        pvarChild->vt = VT_I4;
+        pvarChild->lVal = 1;
+      }
+    } else {
+      retCode = E_INVALIDARG;
+    }
+  }
+
+  return retCode;
+}
+
+// Forces the default action of our element. In simplest cases, send a click.
+STDMETHODIMP CefIAccessible::accDoDefaultAction(VARIANT varChild) {
+  HRESULT retCode = DATACHECK(node_);
+  if (SUCCEEDED(retCode) && VALID_CHILDID(varChild)) {
+    // doing our default action for out button is to simply click the button.
+    CefRefPtr<CefBrowser> browser = node_->GetBrowser();
+    if (browser) {
+      CefMouseEvent mouse_event;
+      const CefRect& rect = node_->AxLocation();
+      mouse_event.x = MiddleX(rect);
+      mouse_event.y = MiddleY(rect);
+
+      mouse_event.modifiers = 0;
+      browser->GetHost()->SendMouseClickEvent(mouse_event, MBT_LEFT, false, 1);
+      browser->GetHost()->SendMouseClickEvent(mouse_event, MBT_LEFT, true, 1);
+    }
+  } else {
+    retCode = E_INVALIDARG;
+  }
+
+  return retCode;
+}
+
+// Set the name for an element in the accessibility tree
+STDMETHODIMP CefIAccessible::put_accName(VARIANT varChild, BSTR szName) {
+  return E_NOTIMPL;
+}
+
+// Set the value for an element in the accessibility tree
+STDMETHODIMP CefIAccessible::put_accValue(VARIANT varChild, BSTR szValue) {
+  return E_NOTIMPL;
+}
+
+// Return E_NOTIMPL as no help file/ topic
+STDMETHODIMP CefIAccessible::get_accHelp(VARIANT varChild, BSTR* pszHelp) {
+  return E_NOTIMPL;
+}
+
+STDMETHODIMP CefIAccessible::get_accHelpTopic(BSTR* pszHelpFile,
+                                              VARIANT varChild,
+                                              long* pidTopic) {
+  return E_NOTIMPL;
+}
+
+// IDispatch - We are not going to return E_NOTIMPL from IDispatch methods and
+// let Active Accessibility implement the IAccessible interface for them.
+STDMETHODIMP CefIAccessible::GetTypeInfoCount(unsigned int FAR* pctinfo) {
+  return E_NOTIMPL;
+}
+
+STDMETHODIMP CefIAccessible::GetTypeInfo(unsigned int iTInfo,
+                                         LCID lcid,
+                                         ITypeInfo FAR* FAR* ppTInfo) {
+  return E_NOTIMPL;
+}
+
+STDMETHODIMP CefIAccessible::GetIDsOfNames(REFIID riid,
+                                           OLECHAR FAR* FAR* rgszNames,
+                                           unsigned int cNames,
+                                           LCID lcid,
+                                           DISPID FAR* rgDispId) {
+  return E_NOTIMPL;
+}
+
+STDMETHODIMP CefIAccessible::Invoke(DISPID dispIdMember,
+                                    REFIID riid,
+                                    LCID lcid,
+                                    WORD wFlags,
+                                    DISPPARAMS FAR* pDispParams,
+                                    VARIANT FAR* pVarResult,
+                                    EXCEPINFO FAR* pExcepInfo,
+                                    unsigned int FAR* puArgErr) {
+  return E_NOTIMPL;
+}
+
+void OsrAXNode::NotifyAccessibilityEvent(std::string event_type) const {
+  if (event_type == "focus") {
+    // Notify Screen Reader of focus change
+    ::NotifyWinEvent(EVENT_OBJECT_FOCUS, GetWindowHandle(), OBJID_CLIENT,
+                     node_id_);
+  }
+}
+
+void OsrAXNode::Destroy() {
+  CefIAccessible* ptr = static_cast<CefIAccessible*>(platform_accessibility_);
+  if (ptr)
+    ptr->MarkDestroyed();
+  platform_accessibility_ = nullptr;
+}
+
+// Create and return NSAccessibility Implementation Object for Window
+CefNativeAccessible* OsrAXNode::GetNativeAccessibleObject(OsrAXNode* parent) {
+  if (!platform_accessibility_) {
+    platform_accessibility_ = new CefIAccessible(this);
+    platform_accessibility_->AddRef();
+    SetParent(parent);
+  }
+  return platform_accessibility_;
+}
+
+
+#else  // !defined(CEF_USE_ATL)
+
+void OsrAXNode::NotifyAccessibilityEvent(std::string event_type) const {}
+
+void OsrAXNode::Destroy() {}
+
+CefNativeAccessible* OsrAXNode::GetNativeAccessibleObject(OsrAXNode* parent) {
+  return nullptr;
+}
+
+#endif  // !defined(CEF_USE_ATL)

src/CEF/OsrD3D11Win.cpp

@@ -0,0 +1,926 @@
+// Copyright 2018 The Chromium Embedded Framework Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be found
+// in the LICENSE file.
+//
+// Portions Copyright (c) 2018 Daktronics with the following MIT License:
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+
+#include "CEF/OsrD3D11Win.h"
+
+#include <iomanip>  // For std::setw.
+
+#if OS_WIN && ARCH_CPU_ARM_FAMILY
+#define __prefetch(x) x
+#endif
+#include <d3dcompiler.h>
+#include <directxmath.h>
+
+#include "include/base/cef_logging.h"
+#include "include/internal/cef_string.h"
+#include "CEF/UtilWin.h"
+
+// Wrap a raw COM pointer in a shared_ptr for auto Release().
+namespace d3d11 {
+template <class T>
+std::shared_ptr<T> to_com_ptr(T* obj) {
+  return std::shared_ptr<T>(obj, [](T* p) {
+    if (p)
+      p->Release();
+  });
+}
+
+struct SimpleVertex {
+  DirectX::XMFLOAT3 pos;
+  DirectX::XMFLOAT2 tex;
+};
+
+Context::Context(ID3D11DeviceContext* ctx) : ctx_(to_com_ptr(ctx)) {}
+
+void Context::flush() {
+  ctx_->Flush();
+}
+
+SwapChain::SwapChain(IDXGISwapChain* swapchain,
+                     ID3D11RenderTargetView* rtv,
+                     ID3D11SamplerState* sampler,
+                     ID3D11BlendState* blender)
+    : sampler_(to_com_ptr(sampler)),
+      blender_(to_com_ptr(blender)),
+      swapchain_(to_com_ptr(swapchain)),
+      rtv_(to_com_ptr(rtv)),
+      width_(0),
+      height_(0) {}
+
+void SwapChain::bind(const std::shared_ptr<Context>& ctx) {
+  ctx_ = ctx;
+  ID3D11DeviceContext* d3d11_ctx = (ID3D11DeviceContext*)(*ctx_);
+
+  ID3D11RenderTargetView* rtv[1] = {rtv_.get()};
+  d3d11_ctx->OMSetRenderTargets(1, rtv, nullptr);
+
+  // Set default blending state.
+  if (blender_) {
+    float factor[4] = {0.0f, 0.0f, 0.0f, 0.0f};
+    d3d11_ctx->OMSetBlendState(blender_.get(), factor, 0xffffffff);
+  }
+
+  // Set default sampler state.
+  if (sampler_) {
+    ID3D11SamplerState* samplers[1] = {sampler_.get()};
+    d3d11_ctx->PSSetSamplers(0, 1, samplers);
+  }
+}
+
+void SwapChain::unbind() {
+  ctx_.reset();
+}
+
+void SwapChain::clear(float red, float green, float blue, float alpha) {
+  ID3D11DeviceContext* d3d11_ctx = (ID3D11DeviceContext*)(*ctx_);
+  CHECK(d3d11_ctx);
+
+  FLOAT color[4] = {red, green, blue, alpha};
+  d3d11_ctx->ClearRenderTargetView(rtv_.get(), color);
+}
+
+void SwapChain::present(int sync_interval) {
+  swapchain_->Present(sync_interval, 0);
+}
+
+void SwapChain::resize(int width, int height) {
+  if (width <= 0 || height <= 0 || width == width_ || height == height_) {
+    return;
+  }
+  width_ = width;
+  height_ = height;
+
+  ID3D11DeviceContext* d3d11_ctx = (ID3D11DeviceContext*)(*ctx_);
+  CHECK(d3d11_ctx);
+
+  d3d11_ctx->OMSetRenderTargets(0, 0, 0);
+  rtv_.reset();
+
+  DXGI_SWAP_CHAIN_DESC desc;
+  swapchain_->GetDesc(&desc);
+  auto hr = swapchain_->ResizeBuffers(0, width, height, desc.BufferDesc.Format,
+                                      desc.Flags);
+  if (FAILED(hr)) {
+    LOG(ERROR) << "d3d11: Failed to resize swapchain (" << width << "x"
+               << height << ")";
+    return;
+  }
+
+  ID3D11Texture2D* buffer = nullptr;
+  hr = swapchain_->GetBuffer(0, __uuidof(ID3D11Texture2D), (void**)&buffer);
+  if (FAILED(hr)) {
+    LOG(ERROR) << "d3d11: Failed to resize swapchain (" << width << "x"
+               << height << ")";
+    return;
+  }
+
+  ID3D11Device* dev = nullptr;
+  d3d11_ctx->GetDevice(&dev);
+  if (dev) {
+    D3D11_RENDER_TARGET_VIEW_DESC vdesc = {};
+    vdesc.ViewDimension = D3D11_RTV_DIMENSION_TEXTURE2D;
+    vdesc.Texture2D.MipSlice = 0;
+    vdesc.Format = desc.BufferDesc.Format;
+
+    ID3D11RenderTargetView* view = nullptr;
+    hr = dev->CreateRenderTargetView(buffer, &vdesc, &view);
+    if (SUCCEEDED(hr)) {
+      rtv_ = to_com_ptr(view);
+      d3d11_ctx->OMSetRenderTargets(1, &view, nullptr);
+    }
+    dev->Release();
+  }
+  buffer->Release();
+
+  D3D11_VIEWPORT vp;
+  vp.Width = static_cast<float>(width);
+  vp.Height = static_cast<float>(height);
+  vp.MinDepth = D3D11_MIN_DEPTH;
+  vp.MaxDepth = D3D11_MAX_DEPTH;
+  vp.TopLeftX = 0;
+  vp.TopLeftY = 0;
+  d3d11_ctx->RSSetViewports(1, &vp);
+}
+
+Effect::Effect(ID3D11VertexShader* vsh,
+               ID3D11PixelShader* psh,
+               ID3D11InputLayout* layout)
+    : vsh_(to_com_ptr(vsh)),
+      psh_(to_com_ptr(psh)),
+      layout_(to_com_ptr(layout)) {}
+
+void Effect::bind(const std::shared_ptr<Context>& ctx) {
+  ctx_ = ctx;
+  ID3D11DeviceContext* d3d11_ctx = (ID3D11DeviceContext*)(*ctx_);
+
+  d3d11_ctx->IASetInputLayout(layout_.get());
+  d3d11_ctx->VSSetShader(vsh_.get(), nullptr, 0);
+  d3d11_ctx->PSSetShader(psh_.get(), nullptr, 0);
+}
+
+void Effect::unbind() {}
+
+Geometry::Geometry(D3D_PRIMITIVE_TOPOLOGY primitive,
+                   uint32_t vertices,
+                   uint32_t stride,
+                   ID3D11Buffer* buffer)
+    : primitive_(primitive),
+      vertices_(vertices),
+      stride_(stride),
+      buffer_(to_com_ptr(buffer)) {}
+
+void Geometry::bind(const std::shared_ptr<Context>& ctx) {
+  ctx_ = ctx;
+  ID3D11DeviceContext* d3d11_ctx = (ID3D11DeviceContext*)(*ctx_);
+
+  // TODO: Handle offset.
+  uint32_t offset = 0;
+
+  ID3D11Buffer* buffers[1] = {buffer_.get()};
+  d3d11_ctx->IASetVertexBuffers(0, 1, buffers, &stride_, &offset);
+  d3d11_ctx->IASetPrimitiveTopology(primitive_);
+}
+
+void Geometry::unbind() {}
+
+void Geometry::draw() {
+  ID3D11DeviceContext* d3d11_ctx = (ID3D11DeviceContext*)(*ctx_);
+  CHECK(d3d11_ctx);
+
+  // TODO: Handle offset.
+  d3d11_ctx->Draw(vertices_, 0);
+}
+
+Texture2D::Texture2D(ID3D11Texture2D* tex, ID3D11ShaderResourceView* srv)
+    : texture_(to_com_ptr(tex)), srv_(to_com_ptr(srv)) {
+  share_handle_ = nullptr;
+
+  IDXGIResource* res = nullptr;
+  if (SUCCEEDED(texture_->QueryInterface(__uuidof(IDXGIResource),
+                                         reinterpret_cast<void**>(&res)))) {
+    res->GetSharedHandle(&share_handle_);
+    res->Release();
+  }
+
+  // Are we using a keyed mutex?
+  IDXGIKeyedMutex* mutex = nullptr;
+  if (SUCCEEDED(texture_->QueryInterface(__uuidof(IDXGIKeyedMutex),
+                                         (void**)&mutex))) {
+    keyed_mutex_ = to_com_ptr(mutex);
+  }
+}
+
+uint32_t Texture2D::width() const {
+  D3D11_TEXTURE2D_DESC desc;
+  texture_->GetDesc(&desc);
+  return desc.Width;
+}
+
+uint32_t Texture2D::height() const {
+  D3D11_TEXTURE2D_DESC desc;
+  texture_->GetDesc(&desc);
+  return desc.Height;
+}
+
+DXGI_FORMAT Texture2D::format() const {
+  D3D11_TEXTURE2D_DESC desc;
+  texture_->GetDesc(&desc);
+  return desc.Format;
+}
+
+bool Texture2D::has_mutex() const {
+  return (keyed_mutex_.get() != nullptr);
+}
+
+bool Texture2D::lock_key(uint64_t key, uint32_t timeout_ms) {
+  if (keyed_mutex_) {
+    const auto hr = keyed_mutex_->AcquireSync(key, timeout_ms);
+    return (hr == S_OK);
+  }
+  return true;
+}
+
+void Texture2D::unlock_key(uint64_t key) {
+  if (keyed_mutex_) {
+    keyed_mutex_->ReleaseSync(key);
+  }
+}
+
+void Texture2D::bind(const std::shared_ptr<Context>& ctx) {
+  ctx_ = ctx;
+  ID3D11DeviceContext* d3d11_ctx = (ID3D11DeviceContext*)(*ctx_);
+  if (srv_) {
+    ID3D11ShaderResourceView* views[1] = {srv_.get()};
+    d3d11_ctx->PSSetShaderResources(0, 1, views);
+  }
+}
+
+void Texture2D::unbind() {}
+
+void* Texture2D::share_handle() const {
+  return share_handle_;
+}
+
+void Texture2D::copy_from(const std::shared_ptr<Texture2D>& other) {
+  ID3D11DeviceContext* d3d11_ctx = (ID3D11DeviceContext*)(*ctx_);
+  CHECK(d3d11_ctx);
+  if (other) {
+    d3d11_ctx->CopyResource(texture_.get(), other->texture_.get());
+  }
+}
+
+Device::Device(ID3D11Device* pdev, ID3D11DeviceContext* pctx)
+    : device_(to_com_ptr(pdev)), ctx_(std::make_shared<Context>(pctx)) {
+  lib_compiler_ = LoadLibrary(L"d3dcompiler_47.dll");
+}
+
+// static
+std::shared_ptr<Device> Device::create() {
+  UINT flags = 0;
+#ifdef _DEBUG
+  flags |= D3D11_CREATE_DEVICE_DEBUG;
+#endif
+
+  D3D_FEATURE_LEVEL feature_levels[] = {
+      D3D_FEATURE_LEVEL_11_1, D3D_FEATURE_LEVEL_11_0, D3D_FEATURE_LEVEL_10_1,
+      D3D_FEATURE_LEVEL_10_0,
+      // D3D_FEATURE_LEVEL_9_3,
+  };
+  UINT num_feature_levels = sizeof(feature_levels) / sizeof(feature_levels[0]);
+
+  ID3D11Device* pdev = nullptr;
+  ID3D11DeviceContext* pctx = nullptr;
+
+  D3D_FEATURE_LEVEL selected_level;
+  HRESULT hr = D3D11CreateDevice(
+      nullptr, D3D_DRIVER_TYPE_HARDWARE, nullptr, flags, feature_levels,
+      num_feature_levels, D3D11_SDK_VERSION, &pdev, &selected_level, &pctx);
+
+  if (hr == E_INVALIDARG) {
+    // DirectX 11.0 platforms will not recognize D3D_FEATURE_LEVEL_11_1
+    // so we need to retry without it.
+    hr = D3D11CreateDevice(nullptr, D3D_DRIVER_TYPE_HARDWARE, nullptr, flags,
+                           &feature_levels[1], num_feature_levels - 1,
+                           D3D11_SDK_VERSION, &pdev, &selected_level, &pctx);
+  }
+
+  if (SUCCEEDED(hr)) {
+    const auto dev = std::make_shared<Device>(pdev, pctx);
+
+    LOG(INFO) << "d3d11: Selected adapter " << dev->adapter_name()
+              << " and feature level 0x" << std::setw(4) << std::hex
+              << selected_level;
+
+    return dev;
+  }
+
+  return nullptr;
+}
+
+std::string Device::adapter_name() const {
+  IDXGIDevice* dxgi_dev = nullptr;
+  auto hr = device_->QueryInterface(__uuidof(dxgi_dev), (void**)&dxgi_dev);
+  if (SUCCEEDED(hr)) {
+    IDXGIAdapter* dxgi_adapt = nullptr;
+    hr = dxgi_dev->GetAdapter(&dxgi_adapt);
+    dxgi_dev->Release();
+    if (SUCCEEDED(hr)) {
+      DXGI_ADAPTER_DESC desc;
+      hr = dxgi_adapt->GetDesc(&desc);
+      dxgi_adapt->Release();
+      if (SUCCEEDED(hr)) {
+        return CefString(desc.Description);
+      }
+    }
+  }
+
+  return "n/a";
+}
+
+std::shared_ptr<Context> Device::immedidate_context() {
+  return ctx_;
+}
+
+std::shared_ptr<SwapChain> Device::create_swapchain(HWND window,
+                                                    int width,
+                                                    int height) {
+  HRESULT hr;
+  IDXGIFactory1* dxgi_factory = nullptr;
+
+  // Default size to the window size unless specified.
+  RECT rc_bounds;
+  GetClientRect(window, &rc_bounds);
+  if (width <= 0) {
+    width = rc_bounds.right - rc_bounds.left;
+  }
+  if (height <= 0) {
+    height = rc_bounds.bottom - rc_bounds.top;
+  }
+
+  {
+    IDXGIDevice* dxgi_dev = nullptr;
+    hr = device_->QueryInterface(__uuidof(IDXGIDevice),
+                                 reinterpret_cast<void**>(&dxgi_dev));
+    if (FAILED(hr)) {
+      return nullptr;
+    }
+
+    IDXGIAdapter* adapter = nullptr;
+    hr = dxgi_dev->GetAdapter(&adapter);
+    dxgi_dev->Release();
+    if (FAILED(hr)) {
+      return nullptr;
+    }
+
+    hr = adapter->GetParent(__uuidof(IDXGIFactory1),
+                            reinterpret_cast<void**>(&dxgi_factory));
+    adapter->Release();
+  }
+
+  if (!dxgi_factory) {
+    return nullptr;
+  }
+
+  IDXGISwapChain* swapchain = nullptr;
+
+  // Create swap chain.
+  IDXGIFactory2* dxgi_factory2 = nullptr;
+  hr = dxgi_factory->QueryInterface(__uuidof(IDXGIFactory2),
+                                    reinterpret_cast<void**>(&dxgi_factory2));
+  if (dxgi_factory2) {
+    DXGI_SWAP_CHAIN_DESC1 sd;
+    ZeroMemory(&sd, sizeof(sd));
+    sd.Width = width;
+    sd.Height = height;
+    sd.Format = DXGI_FORMAT_R8G8B8A8_UNORM;
+    sd.SampleDesc.Count = 1;
+    sd.SampleDesc.Quality = 0;
+    sd.BufferUsage = DXGI_USAGE_RENDER_TARGET_OUTPUT;
+    sd.BufferCount = 1;
+
+    IDXGISwapChain1* swapchain1 = nullptr;
+    hr = dxgi_factory2->CreateSwapChainForHwnd(device_.get(), window, &sd,
+                                               nullptr, nullptr, &swapchain1);
+    if (SUCCEEDED(hr)) {
+      hr = swapchain1->QueryInterface(__uuidof(IDXGISwapChain),
+                                      reinterpret_cast<void**>(&swapchain));
+      swapchain1->Release();
+    }
+
+    dxgi_factory2->Release();
+  } else {
+    // DirectX 11.0 systems.
+    DXGI_SWAP_CHAIN_DESC sd;
+    ZeroMemory(&sd, sizeof(sd));
+    sd.BufferCount = 1;
+    sd.BufferDesc.Width = width;
+    sd.BufferDesc.Height = height;
+    sd.BufferDesc.Format = DXGI_FORMAT_R8G8B8A8_UNORM;
+    sd.BufferDesc.RefreshRate.Numerator = 60;
+    sd.BufferDesc.RefreshRate.Denominator = 1;
+    sd.BufferUsage = DXGI_USAGE_RENDER_TARGET_OUTPUT;
+    sd.OutputWindow = window;
+    sd.SampleDesc.Count = 1;
+    sd.SampleDesc.Quality = 0;
+    sd.Windowed = TRUE;
+
+    hr = dxgi_factory->CreateSwapChain(device_.get(), &sd, &swapchain);
+  }
+
+  // We don't handle full-screen swapchains so we block the ALT+ENTER shortcut.
+  dxgi_factory->MakeWindowAssociation(window, DXGI_MWA_NO_ALT_ENTER);
+  dxgi_factory->Release();
+
+  if (!swapchain) {
+    return nullptr;
+  }
+
+  ID3D11Texture2D* back_buffer = nullptr;
+  hr = swapchain->GetBuffer(0, __uuidof(ID3D11Texture2D),
+                            reinterpret_cast<void**>(&back_buffer));
+  if (FAILED(hr)) {
+    swapchain->Release();
+    return nullptr;
+  }
+
+  ID3D11RenderTargetView* rtv = nullptr;
+  hr = device_->CreateRenderTargetView(back_buffer, nullptr, &rtv);
+  back_buffer->Release();
+  if (FAILED(hr)) {
+    swapchain->Release();
+    return nullptr;
+  }
+
+  const auto ctx = (ID3D11DeviceContext*)(*ctx_);
+
+  ctx->OMSetRenderTargets(1, &rtv, nullptr);
+
+  // Setup the viewport.
+  D3D11_VIEWPORT vp;
+  vp.Width = (FLOAT)width;
+  vp.Height = (FLOAT)height;
+  vp.MinDepth = 0.0f;
+  vp.MaxDepth = 1.0f;
+  vp.TopLeftX = 0;
+  vp.TopLeftY = 0;
+  ctx->RSSetViewports(1, &vp);
+
+  // Create a default sampler to use.
+  ID3D11SamplerState* sampler = nullptr;
+  {
+    D3D11_SAMPLER_DESC desc = {};
+    desc.AddressU = D3D11_TEXTURE_ADDRESS_CLAMP;
+    desc.AddressV = D3D11_TEXTURE_ADDRESS_CLAMP;
+    desc.AddressW = D3D11_TEXTURE_ADDRESS_CLAMP;
+    desc.ComparisonFunc = D3D11_COMPARISON_NEVER;
+    desc.MinLOD = 0.0f;
+    desc.MaxLOD = D3D11_FLOAT32_MAX;
+    desc.Filter = D3D11_FILTER_MIN_MAG_MIP_LINEAR;
+    device_->CreateSamplerState(&desc, &sampler);
+  }
+
+  // Create a default blend state to use (pre-multiplied alpha).
+  ID3D11BlendState* blender = nullptr;
+  {
+    D3D11_BLEND_DESC desc;
+    desc.AlphaToCoverageEnable = FALSE;
+    desc.IndependentBlendEnable = FALSE;
+    const auto count = sizeof(desc.RenderTarget) / sizeof(desc.RenderTarget[0]);
+    for (size_t n = 0; n < count; ++n) {
+      desc.RenderTarget[n].BlendEnable = TRUE;
+      desc.RenderTarget[n].SrcBlend = D3D11_BLEND_ONE;
+      desc.RenderTarget[n].DestBlend = D3D11_BLEND_INV_SRC_ALPHA;
+      desc.RenderTarget[n].SrcBlendAlpha = D3D11_BLEND_ONE;
+      desc.RenderTarget[n].DestBlendAlpha = D3D11_BLEND_INV_SRC_ALPHA;
+      desc.RenderTarget[n].BlendOp = D3D11_BLEND_OP_ADD;
+      desc.RenderTarget[n].BlendOpAlpha = D3D11_BLEND_OP_ADD;
+      desc.RenderTarget[n].RenderTargetWriteMask = D3D11_COLOR_WRITE_ENABLE_ALL;
+    }
+    device_->CreateBlendState(&desc, &blender);
+  }
+
+  return std::make_shared<SwapChain>(swapchain, rtv, sampler, blender);
+}
+
+std::shared_ptr<Geometry> Device::create_quad(float x,
+                                              float y,
+                                              float width,
+                                              float height,
+                                              bool flip) {
+  x = (x * 2.0f) - 1.0f;
+  y = 1.0f - (y * 2.0f);
+  width = width * 2.0f;
+  height = height * 2.0f;
+  float z = 1.0f;
+
+  SimpleVertex vertices[] = {
+
+      {DirectX::XMFLOAT3(x, y, z), DirectX::XMFLOAT2(0.0f, 0.0f)},
+      {DirectX::XMFLOAT3(x + width, y, z), DirectX::XMFLOAT2(1.0f, 0.0f)},
+      {DirectX::XMFLOAT3(x, y - height, z), DirectX::XMFLOAT2(0.0f, 1.0f)},
+      {DirectX::XMFLOAT3(x + width, y - height, z),
+       DirectX::XMFLOAT2(1.0f, 1.0f)}};
+
+  if (flip) {
+    DirectX::XMFLOAT2 tmp(vertices[2].tex);
+    vertices[2].tex = vertices[0].tex;
+    vertices[0].tex = tmp;
+
+    tmp = vertices[3].tex;
+    vertices[3].tex = vertices[1].tex;
+    vertices[1].tex = tmp;
+  }
+
+  D3D11_BUFFER_DESC desc = {};
+  desc.Usage = D3D11_USAGE_DEFAULT;
+  desc.ByteWidth = sizeof(SimpleVertex) * 4;
+  desc.BindFlags = D3D11_BIND_VERTEX_BUFFER;
+  desc.CPUAccessFlags = 0;
+
+  D3D11_SUBRESOURCE_DATA srd = {};
+  srd.pSysMem = vertices;
+
+  ID3D11Buffer* buffer = nullptr;
+  const auto hr = device_->CreateBuffer(&desc, &srd, &buffer);
+  if (SUCCEEDED(hr)) {
+    return std::make_shared<Geometry>(
+        D3D_PRIMITIVE_TOPOLOGY_TRIANGLESTRIP, 4,
+        static_cast<uint32_t>(sizeof(SimpleVertex)), buffer);
+  }
+
+  return nullptr;
+}
+
+std::shared_ptr<Texture2D> Device::open_shared_texture(void* handle) {
+  ID3D11Texture2D* tex = nullptr;
+  auto hr = device_->OpenSharedResource(handle, __uuidof(ID3D11Texture2D),
+                                        (void**)(&tex));
+  if (FAILED(hr)) {
+    return nullptr;
+  }
+
+  D3D11_TEXTURE2D_DESC td;
+  tex->GetDesc(&td);
+
+  ID3D11ShaderResourceView* srv = nullptr;
+
+  if (td.BindFlags & D3D11_BIND_SHADER_RESOURCE) {
+    D3D11_SHADER_RESOURCE_VIEW_DESC srv_desc;
+    srv_desc.Format = td.Format;
+    srv_desc.ViewDimension = D3D11_SRV_DIMENSION_TEXTURE2D;
+    srv_desc.Texture2D.MostDetailedMip = 0;
+    srv_desc.Texture2D.MipLevels = 1;
+
+    hr = device_->CreateShaderResourceView(tex, &srv_desc, &srv);
+    if (FAILED(hr)) {
+      tex->Release();
+      return nullptr;
+    }
+  }
+
+  return std::make_shared<Texture2D>(tex, srv);
+}
+
+std::shared_ptr<Texture2D> Device::create_texture(int width,
+                                                  int height,
+                                                  DXGI_FORMAT format,
+                                                  const void* data,
+                                                  size_t row_stride) {
+  D3D11_TEXTURE2D_DESC td;
+  td.ArraySize = 1;
+  td.BindFlags = D3D11_BIND_SHADER_RESOURCE;
+  td.CPUAccessFlags = 0;
+  td.Format = format;
+  td.Width = width;
+  td.Height = height;
+  td.MipLevels = 1;
+  td.MiscFlags = 0;
+  td.SampleDesc.Count = 1;
+  td.SampleDesc.Quality = 0;
+  td.Usage = D3D11_USAGE_DEFAULT;
+
+  D3D11_SUBRESOURCE_DATA srd;
+  srd.pSysMem = data;
+  srd.SysMemPitch = static_cast<uint32_t>(row_stride);
+  srd.SysMemSlicePitch = 0;
+
+  ID3D11Texture2D* tex = nullptr;
+  auto hr = device_->CreateTexture2D(&td, data ? &srd : nullptr, &tex);
+  if (FAILED(hr)) {
+    return nullptr;
+  }
+
+  D3D11_SHADER_RESOURCE_VIEW_DESC srv_desc;
+  srv_desc.Format = td.Format;
+  srv_desc.ViewDimension = D3D11_SRV_DIMENSION_TEXTURE2D;
+  srv_desc.Texture2D.MostDetailedMip = 0;
+  srv_desc.Texture2D.MipLevels = 1;
+
+  ID3D11ShaderResourceView* srv = nullptr;
+  hr = device_->CreateShaderResourceView(tex, &srv_desc, &srv);
+  if (FAILED(hr)) {
+    tex->Release();
+    return nullptr;
+  }
+
+  return std::make_shared<Texture2D>(tex, srv);
+}
+
+std::shared_ptr<ID3DBlob> Device::compile_shader(const std::string& source_code,
+                                                 const std::string& entry_point,
+                                                 const std::string& model) {
+  if (!lib_compiler_) {
+    return nullptr;
+  }
+
+  typedef HRESULT(WINAPI * PFN_D3DCOMPILE)(
+      LPCVOID, SIZE_T, LPCSTR, const D3D_SHADER_MACRO*, ID3DInclude*, LPCSTR,
+      LPCSTR, UINT, UINT, ID3DBlob**, ID3DBlob**);
+
+  const auto fnc_compile = reinterpret_cast<PFN_D3DCOMPILE>(
+      GetProcAddress(lib_compiler_, "D3DCompile"));
+  if (!fnc_compile) {
+    return nullptr;
+  }
+
+  DWORD flags = D3DCOMPILE_ENABLE_STRICTNESS;
+
+#if defined(NDEBUG)
+// flags |= D3DCOMPILE_OPTIMIZATION_LEVEL3;
+// flags |= D3DCOMPILE_AVOID_FLOW_CONTROL;
+#else
+  flags |= D3DCOMPILE_DEBUG;
+  flags |= D3DCOMPILE_SKIP_OPTIMIZATION;
+#endif
+
+  ID3DBlob* blob = nullptr;
+  ID3DBlob* blob_err = nullptr;
+
+  const auto psrc = source_code.c_str();
+  const auto len = source_code.size() + 1;
+
+  const auto hr =
+      fnc_compile(psrc, len, nullptr, nullptr, nullptr, entry_point.c_str(),
+                  model.c_str(), flags, 0, &blob, &blob_err);
+
+  if (FAILED(hr)) {
+    if (blob_err) {
+      // TODO: Log the error.
+      blob_err->Release();
+    }
+    return nullptr;
+  }
+
+  if (blob_err) {
+    blob_err->Release();
+  }
+
+  return std::shared_ptr<ID3DBlob>(blob, [](ID3DBlob* p) {
+    if (p)
+      p->Release();
+  });
+}
+
+std::shared_ptr<Effect> Device::create_default_effect() {
+  const auto vsh =
+      R"--(struct VS_INPUT
+{
+	float4 pos : POSITION;
+	float2 tex : TEXCOORD0;
+};
+
+struct VS_OUTPUT
+{
+	float4 pos : SV_POSITION;
+	float2 tex : TEXCOORD0;
+};
+
+VS_OUTPUT main(VS_INPUT input)
+{
+	VS_OUTPUT output;
+	output.pos = input.pos;
+	output.tex = input.tex;
+	return output;
+})--";
+
+  const auto psh =
+      R"--(Texture2D tex0 : register(t0);
+SamplerState samp0 : register(s0);
+
+struct VS_OUTPUT
+{
+	float4 pos : SV_POSITION;
+	float2 tex : TEXCOORD0;
+};
+
+float4 main(VS_OUTPUT input) : SV_Target
+{
+	return tex0.Sample(samp0, input.tex);
+})--";
+
+  return create_effect(vsh, "main", "vs_4_0", psh, "main", "ps_4_0");
+}
+
+std::shared_ptr<Effect> Device::create_effect(const std::string& vertex_code,
+                                              const std::string& vertex_entry,
+                                              const std::string& vertex_model,
+                                              const std::string& pixel_code,
+                                              const std::string& pixel_entry,
+                                              const std::string& pixel_model) {
+  const auto vs_blob = compile_shader(vertex_code, vertex_entry, vertex_model);
+
+  ID3D11VertexShader* vshdr = nullptr;
+  ID3D11InputLayout* layout = nullptr;
+
+  if (vs_blob) {
+    device_->CreateVertexShader(vs_blob->GetBufferPointer(),
+                                vs_blob->GetBufferSize(), nullptr, &vshdr);
+
+    D3D11_INPUT_ELEMENT_DESC layout_desc[] = {
+        {"POSITION", 0, DXGI_FORMAT_R32G32B32_FLOAT, 0, 0,
+         D3D11_INPUT_PER_VERTEX_DATA, 0},
+        {"TEXCOORD", 0, DXGI_FORMAT_R32G32_FLOAT, 0, 12,
+         D3D11_INPUT_PER_VERTEX_DATA, 0},
+    };
+
+    UINT elements = ARRAYSIZE(layout_desc);
+
+    // Create the input layout.
+    device_->CreateInputLayout(layout_desc, elements,
+                               vs_blob->GetBufferPointer(),
+                               vs_blob->GetBufferSize(), &layout);
+  }
+
+  const auto ps_blob = compile_shader(pixel_code, pixel_entry, pixel_model);
+  ID3D11PixelShader* pshdr = nullptr;
+  if (ps_blob) {
+    device_->CreatePixelShader(ps_blob->GetBufferPointer(),
+                               ps_blob->GetBufferSize(), nullptr, &pshdr);
+  }
+
+  return std::make_shared<Effect>(vshdr, pshdr, layout);
+}
+
+Layer::Layer(const std::shared_ptr<Device>& device, bool flip)
+    : device_(device), flip_(flip) {
+  bounds_.x = bounds_.y = bounds_.width = bounds_.height = 0.0f;
+}
+
+Layer::~Layer() {}
+
+void Layer::attach(const std::shared_ptr<Composition>& parent) {
+  composition_ = parent;
+}
+
+std::shared_ptr<Composition> Layer::composition() const {
+  return composition_.lock();
+}
+
+Rect Layer::bounds() const {
+  return bounds_;
+}
+
+void Layer::move(float x, float y, float width, float height) {
+  bounds_.x = x;
+  bounds_.y = y;
+  bounds_.width = width;
+  bounds_.height = height;
+
+  // It's not efficient to create the quad everytime we move, but for now we're
+  // just trying to get something on-screen.
+  geometry_.reset();
+}
+
+void Layer::tick(double) {
+  // Nothing to update in the base class.
+}
+
+void Layer::render_texture(const std::shared_ptr<Context>& ctx,
+                           const std::shared_ptr<Texture2D>& texture) {
+  if (!geometry_) {
+    geometry_ = device_->create_quad(bounds_.x, bounds_.y, bounds_.width,
+                                     bounds_.height, flip_);
+  }
+
+  if (geometry_ && texture) {
+    // We need a shader.
+    if (!effect_) {
+      effect_ = device_->create_default_effect();
+    }
+
+    // Bind our states/resource to the pipeline.
+    ScopedBinder<Geometry> quad_binder(ctx, geometry_);
+    ScopedBinder<Effect> fx_binder(ctx, effect_);
+    ScopedBinder<Texture2D> tex_binder(ctx, texture);
+
+    // Draw the quad.
+    geometry_->draw();
+  }
+}
+
+Composition::Composition(const std::shared_ptr<Device>& device,
+                         int width,
+                         int height)
+    : width_(width), height_(height), vsync_(true), device_(device) {
+  fps_ = 0.0;
+  time_ = 0.0;
+  frame_ = 0;
+  fps_start_ = GetTimeNow();
+}
+
+bool Composition::is_vsync() const {
+  return vsync_;
+}
+
+double Composition::time() const {
+  return time_;
+}
+
+double Composition::fps() const {
+  return fps_;
+}
+
+void Composition::add_layer(const std::shared_ptr<Layer>& layer) {
+  if (layer) {
+    layers_.push_back(layer);
+
+    // Attach ourselves as the parent.
+    layer->attach(shared_from_this());
+  }
+}
+
+bool Composition::remove_layer(const std::shared_ptr<Layer>& layer) {
+  size_t match = 0;
+  if (layer) {
+    for (auto i = layers_.begin(); i != layers_.end();) {
+      if ((*i).get() == layer.get()) {
+        i = layers_.erase(i);
+        match++;
+      } else {
+        i++;
+      }
+    }
+  }
+  return (match > 0);
+}
+
+void Composition::resize(bool vsync, int width, int height) {
+  vsync_ = vsync;
+  width_ = width;
+  height_ = height;
+}
+
+void Composition::tick(double t) {
+  time_ = t;
+  for (const auto& layer : layers_) {
+    layer->tick(t);
+  }
+}
+
+void Composition::render(const std::shared_ptr<Context>& ctx) {
+  // Use painter's algorithm and render our layers in order (not doing any dept
+  // or 3D here).
+  for (const auto& layer : layers_) {
+    layer->render(ctx);
+  }
+
+  frame_++;
+  const auto now = GetTimeNow();
+  if ((now - fps_start_) > 1000000) {
+    fps_ = frame_ / double((now - fps_start_) / 1000000.0);
+    frame_ = 0;
+    fps_start_ = now;
+  }
+}
+
+FrameBuffer::FrameBuffer(const std::shared_ptr<Device>& device)
+    : device_(device) {}
+
+void FrameBuffer::on_paint(void* shared_handle) {
+  // Did the shared texture change?
+  if (shared_buffer_ && shared_handle != shared_buffer_->share_handle()) {
+    shared_buffer_.reset();
+  }
+
+  // Open the shared texture.
+  if (!shared_buffer_) {
+    shared_buffer_ = device_->open_shared_texture((void*)shared_handle);
+    if (!shared_buffer_) {
+      LOG(ERROR) << "d3d11: Could not open shared texture!";
+    }
+  }
+}
+}

src/CEF/OsrD3D11Win.h

@@ -0,0 +1,322 @@
+// Copyright 2018 The Chromium Embedded Framework Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be found
+// in the LICENSE file.
+//
+// Portions Copyright (c) 2018 Daktronics with the following MIT License:
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+
+#pragma once
+
+#include <d3d11_1.h>
+
+#include <memory>
+#include <string>
+#include <vector>
+
+#include "include/base/cef_macros.h"
+
+namespace d3d11 {
+class Composition;
+class Context;
+class Effect;
+class Geometry;
+class SwapChain;
+class Texture2D;
+ 
+ // Basic rect for floats.
+ struct Rect {
+  float x;
+  float y;
+  float width;
+  float height;
+ };
+
+ template <class T>
+ class ScopedBinder {
+ public:
+  ScopedBinder(const std::shared_ptr<Context>& ctx,
+               const std::shared_ptr<T>& target)
+      : target_(target) {
+   if (target_) {
+    target_->bind(ctx);
+   }
+  }
+  ~ScopedBinder() {
+   if (target_) {
+    target_->unbind();
+   }
+  }
+
+ private:
+  const std::shared_ptr<T> target_;
+
+  DISALLOW_COPY_AND_ASSIGN(ScopedBinder);
+ };
+
+ class Context {
+ public:
+  Context(ID3D11DeviceContext*);
+
+  void flush();
+
+  operator ID3D11DeviceContext*() { return ctx_.get(); }
+
+ private:
+  const std::shared_ptr<ID3D11DeviceContext> ctx_;
+ };
+
+ // Encapsulate a D3D11 Device object.
+ class Device {
+ public:
+  Device(ID3D11Device*, ID3D11DeviceContext*);
+
+  static std::shared_ptr<Device> create();
+
+  std::string adapter_name() const;
+
+  operator ID3D11Device*() { return device_.get(); }
+
+  std::shared_ptr<Context> immedidate_context();
+
+  std::shared_ptr<SwapChain> create_swapchain(HWND,
+                                              int width = 0,
+                                              int height = 0);
+
+  std::shared_ptr<Geometry> create_quad(float x,
+                                        float y,
+                                        float width,
+                                        float height,
+                                        bool flip = false);
+
+  std::shared_ptr<Texture2D> create_texture(int width,
+                                            int height,
+                                            DXGI_FORMAT format,
+                                            const void* data,
+                                            size_t row_stride);
+
+  std::shared_ptr<Texture2D> open_shared_texture(void*);
+
+  // Create some basic shaders so we can draw a textured-quad.
+  std::shared_ptr<Effect> create_default_effect();
+
+  std::shared_ptr<Effect> create_effect(const std::string& vertex_code,
+                                        const std::string& vertex_entry,
+                                        const std::string& vertex_model,
+                                        const std::string& pixel_code,
+                                        const std::string& pixel_entry,
+                                        const std::string& pixel_model);
+
+ private:
+  std::shared_ptr<ID3DBlob> compile_shader(const std::string& source_code,
+                                           const std::string& entry_point,
+                                           const std::string& model);
+
+  HMODULE lib_compiler_;
+
+  const std::shared_ptr<ID3D11Device> device_;
+  const std::shared_ptr<Context> ctx_;
+
+  DISALLOW_COPY_AND_ASSIGN(Device);
+ };
+
+ // Encapsulate a DXGI swapchain for a window.
+ class SwapChain {
+ public:
+  SwapChain(IDXGISwapChain*,
+            ID3D11RenderTargetView*,
+            ID3D11SamplerState*,
+            ID3D11BlendState*);
+
+  void bind(const std::shared_ptr<Context>& ctx);
+  void unbind();
+
+  void clear(float red, float green, float blue, float alpha);
+
+  void present(int sync_interval);
+  void resize(int width, int height);
+
+  int width() const { return width_; }
+  int height() const { return height_; }
+
+ private:
+  const std::shared_ptr<ID3D11SamplerState> sampler_;
+  const std::shared_ptr<ID3D11BlendState> blender_;
+  const std::shared_ptr<IDXGISwapChain> swapchain_;
+  std::shared_ptr<ID3D11RenderTargetView> rtv_;
+  std::shared_ptr<Context> ctx_;
+  int width_;
+  int height_;
+
+  DISALLOW_COPY_AND_ASSIGN(SwapChain);
+ };
+
+ class Texture2D {
+ public:
+  Texture2D(ID3D11Texture2D* tex, ID3D11ShaderResourceView* srv);
+
+  void bind(std::shared_ptr<Context> const& ctx);
+  void unbind();
+
+  uint32_t width() const;
+  uint32_t height() const;
+  DXGI_FORMAT format() const;
+
+  bool has_mutex() const;
+
+  bool lock_key(uint64_t key, uint32_t timeout_ms);
+  void unlock_key(uint64_t key);
+
+  void* share_handle() const;
+
+  void copy_from(const std::shared_ptr<Texture2D>&);
+
+ private:
+  HANDLE share_handle_;
+
+  const std::shared_ptr<ID3D11Texture2D> texture_;
+  const std::shared_ptr<ID3D11ShaderResourceView> srv_;
+  std::shared_ptr<IDXGIKeyedMutex> keyed_mutex_;
+  std::shared_ptr<Context> ctx_;
+
+  DISALLOW_COPY_AND_ASSIGN(Texture2D);
+ };
+
+ class Effect {
+ public:
+  Effect(ID3D11VertexShader* vsh,
+         ID3D11PixelShader* psh,
+         ID3D11InputLayout* layout);
+
+  void bind(const std::shared_ptr<Context>& ctx);
+  void unbind();
+
+ private:
+  const std::shared_ptr<ID3D11VertexShader> vsh_;
+  const std::shared_ptr<ID3D11PixelShader> psh_;
+  const std::shared_ptr<ID3D11InputLayout> layout_;
+  std::shared_ptr<Context> ctx_;
+
+  DISALLOW_COPY_AND_ASSIGN(Effect);
+ };
+
+ class Geometry {
+ public:
+  Geometry(D3D_PRIMITIVE_TOPOLOGY primitive,
+           uint32_t vertices,
+           uint32_t stride,
+           ID3D11Buffer*);
+
+  void bind(const std::shared_ptr<Context>& ctx);
+  void unbind();
+
+  void draw();
+
+ private:
+  D3D_PRIMITIVE_TOPOLOGY primitive_;
+  uint32_t vertices_;
+  uint32_t stride_;
+  const std::shared_ptr<ID3D11Buffer> buffer_;
+  std::shared_ptr<Context> ctx_;
+
+  DISALLOW_COPY_AND_ASSIGN(Geometry);
+ };
+
+ // Abstraction for a 2D layer within a composition.
+ class Layer {
+ public:
+  Layer(const std::shared_ptr<Device>& device, bool flip);
+  virtual ~Layer();
+
+  void attach(const std::shared_ptr<Composition>&);
+
+  // Uses normalized 0-1.0 coordinates.
+  virtual void move(float x, float y, float width, float height);
+
+  virtual void tick(double t);
+  virtual void render(const std::shared_ptr<Context>& ctx) = 0;
+
+  Rect bounds() const;
+
+  std::shared_ptr<Composition> composition() const;
+
+ protected:
+  // Helper method for derived classes to draw a textured-quad.
+  void render_texture(const std::shared_ptr<Context>& ctx,
+                      const std::shared_ptr<Texture2D>& texture);
+
+  const std::shared_ptr<Device> device_;
+  const bool flip_;
+
+  Rect bounds_;
+  std::shared_ptr<Geometry> geometry_;
+  std::shared_ptr<Effect> effect_;
+
+ private:
+  std::weak_ptr<Composition> composition_;
+
+  DISALLOW_COPY_AND_ASSIGN(Layer);
+ };
+
+ // A collection of layers. Will render 1-N layers to a D3D11 device.
+ class Composition : public std::enable_shared_from_this<Composition> {
+ public:
+  Composition(const std::shared_ptr<Device>& device,
+              int width = 0,
+              int height = 0);
+
+  int width() const { return width_; }
+  int height() const { return height_; }
+
+  double fps() const;
+  double time() const;
+
+  bool is_vsync() const;
+
+  void tick(double);
+  void render(const std::shared_ptr<Context>&);
+
+  void add_layer(const std::shared_ptr<Layer>& layer);
+  bool remove_layer(const std::shared_ptr<Layer>& layer);
+  void resize(bool vsync, int width, int height);
+
+ private:
+  int width_;
+  int height_;
+  uint32_t frame_;
+  int64_t fps_start_;
+  double fps_;
+  double time_;
+  bool vsync_;
+
+  const std::shared_ptr<Device> device_;
+  std::vector<std::shared_ptr<Layer>> layers_;
+
+  DISALLOW_COPY_AND_ASSIGN(Composition);
+ };
+
+ class FrameBuffer {
+ public:
+  explicit FrameBuffer(const std::shared_ptr<Device>& device);
+
+  // Called in response to CEF's OnAcceleratedPaint notification.
+  void on_paint(void* shared_handle);
+
+  // Returns what should be considered the front buffer.
+  std::shared_ptr<Texture2D> texture() const { return shared_buffer_; }
+
+ private:
+  const std::shared_ptr<Device> device_;
+  std::shared_ptr<Texture2D> shared_buffer_;
+
+  DISALLOW_COPY_AND_ASSIGN(FrameBuffer);
+ };
+} // namespace d3d11

src/CEF/OsrDragdropEvents.h

@@ -0,0 +1,30 @@
+// Copyright (c) 2014 The Chromium Embedded Framework Authors. All rights
+// reserved. Use of this source code is governed by a BSD-style license that
+// can be found in the LICENSE file.
+
+
+#pragma once
+
+#include "include/cef_render_handler.h"
+#include "tests/cefclient/browser/client_handler.h"
+
+class OsrDragEvents {
+ public:
+  virtual CefBrowserHost::DragOperationsMask OnDragEnter(
+      CefRefPtr<CefDragData> drag_data,
+      CefMouseEvent ev,
+      CefBrowserHost::DragOperationsMask effect) = 0;
+
+  virtual CefBrowserHost::DragOperationsMask OnDragOver(
+      CefMouseEvent ev,
+      CefBrowserHost::DragOperationsMask effect) = 0;
+
+  virtual void OnDragLeave() = 0;
+
+  virtual CefBrowserHost::DragOperationsMask OnDrop(
+      CefMouseEvent ev,
+      CefBrowserHost::DragOperationsMask effect) = 0;
+
+ protected:
+  virtual ~OsrDragEvents() {}
+};

src/CEF/OsrDragdropWin.cpp

@@ -0,0 +1,652 @@
+// Copyright (c) 2014 The Chromium Embedded Framework Authors. All rights
+// reserved. Use of this source code is governed by a BSD-style license that
+// can be found in the LICENSE file.
+
+#include "CEF/OsrDragdropWin.h"
+
+#if defined(CEF_USE_ATL)
+
+#include <shellapi.h>
+#include <shlobj.h>
+#include <windowsx.h>
+
+#include <algorithm>
+#include <string>
+
+#include "include/wrapper/cef_helpers.h"
+#include "CEF/BytesWriteHandler.h"
+#include "CEF/resource.h"
+#include "CEF/UtilWin.h"
+
+
+DWORD DragOperationToDropEffect(CefRenderHandler::DragOperation allowed_ops) {
+  DWORD effect = DROPEFFECT_NONE;
+  if (allowed_ops & DRAG_OPERATION_COPY)
+    effect |= DROPEFFECT_COPY;
+  if (allowed_ops & DRAG_OPERATION_LINK)
+    effect |= DROPEFFECT_LINK;
+  if (allowed_ops & DRAG_OPERATION_MOVE)
+    effect |= DROPEFFECT_MOVE;
+  return effect;
+}
+
+CefRenderHandler::DragOperationsMask DropEffectToDragOperation(DWORD effect) {
+  DWORD operation = DRAG_OPERATION_NONE;
+  if (effect & DROPEFFECT_COPY)
+    operation |= DRAG_OPERATION_COPY;
+  if (effect & DROPEFFECT_LINK)
+    operation |= DRAG_OPERATION_LINK;
+  if (effect & DROPEFFECT_MOVE)
+    operation |= DRAG_OPERATION_MOVE;
+  return static_cast<CefRenderHandler::DragOperationsMask>(operation);
+}
+
+CefMouseEvent ToMouseEvent(POINTL p, DWORD key_state, HWND hWnd) {
+  CefMouseEvent ev;
+  POINT screen_point = {p.x, p.y};
+  ScreenToClient(hWnd, &screen_point);
+  ev.x = screen_point.x;
+  ev.y = screen_point.y;
+  ev.modifiers = GetCefMouseModifiers(key_state);
+  return ev;
+}
+
+void GetStorageForBytes(STGMEDIUM* storage, const void* data, size_t bytes) {
+  HANDLE handle = GlobalAlloc(GPTR, static_cast<int>(bytes));
+  if (handle) {
+    memcpy(handle, data, bytes);
+  }
+
+  storage->hGlobal = handle;
+  storage->tymed = TYMED_HGLOBAL;
+  storage->pUnkForRelease = nullptr;
+}
+
+template <typename T>
+void GetStorageForString(STGMEDIUM* stgmed, const std::basic_string<T>& data) {
+  GetStorageForBytes(
+      stgmed, data.c_str(),
+      (data.size() + 1) * sizeof(typename std::basic_string<T>::value_type));
+}
+
+void GetStorageForFileDescriptor(STGMEDIUM* storage,
+                                 const std::wstring& file_name) {
+  DCHECK(!file_name.empty());
+  HANDLE hdata = GlobalAlloc(GPTR, sizeof(FILEGROUPDESCRIPTOR));
+
+  FILEGROUPDESCRIPTOR* descriptor =
+      reinterpret_cast<FILEGROUPDESCRIPTOR*>(hdata);
+  descriptor->cItems = 1;
+  descriptor->fgd[0].dwFlags = FD_LINKUI;
+  wcsncpy_s(descriptor->fgd[0].cFileName, MAX_PATH, file_name.c_str(),
+            std::min(file_name.size(), static_cast<size_t>(MAX_PATH - 1u)));
+
+  storage->tymed = TYMED_HGLOBAL;
+  storage->hGlobal = hdata;
+  storage->pUnkForRelease = nullptr;
+}
+
+// Helper method for converting from text/html to MS CF_HTML.
+// Documentation for the CF_HTML format is available at
+// http://msdn.microsoft.com/en-us/library/aa767917(VS.85).aspx
+std::string HtmlToCFHtml(const std::string& html, const std::string& base_url) {
+  if (html.empty())
+    return std::string();
+
+#define MAX_DIGITS 10
+#define MAKE_NUMBER_FORMAT_1(digits) MAKE_NUMBER_FORMAT_2(digits)
+#define MAKE_NUMBER_FORMAT_2(digits) "%0" #digits "u"
+#define NUMBER_FORMAT MAKE_NUMBER_FORMAT_1(MAX_DIGITS)
+
+  static const char* header =
+      "Version:0.9\r\n"
+      "StartHTML:" NUMBER_FORMAT
+      "\r\n"
+      "EndHTML:" NUMBER_FORMAT
+      "\r\n"
+      "StartFragment:" NUMBER_FORMAT
+      "\r\n"
+      "EndFragment:" NUMBER_FORMAT "\r\n";
+  static const char* source_url_prefix = "SourceURL:";
+
+  static const char* start_markup = "<html>\r\n<body>\r\n<!--StartFragment-->";
+  static const char* end_markup = "<!--EndFragment-->\r\n</body>\r\n</html>";
+
+  // Calculate offsets
+  size_t start_html_offset =
+      strlen(header) - strlen(NUMBER_FORMAT) * 4 + MAX_DIGITS * 4;
+  if (!base_url.empty()) {
+    start_html_offset +=
+        strlen(source_url_prefix) + base_url.length() + 2;  // Add 2 for \r\n.
+  }
+  size_t start_fragment_offset = start_html_offset + strlen(start_markup);
+  size_t end_fragment_offset = start_fragment_offset + html.length();
+  size_t end_html_offset = end_fragment_offset + strlen(end_markup);
+  char raw_result[1024];
+  _snprintf(raw_result, sizeof(1024), header, start_html_offset,
+            end_html_offset, start_fragment_offset, end_fragment_offset);
+  std::string result = raw_result;
+  if (!base_url.empty()) {
+    result.append(source_url_prefix);
+    result.append(base_url);
+    result.append("\r\n");
+  }
+  result.append(start_markup);
+  result.append(html);
+  result.append(end_markup);
+
+#undef MAX_DIGITS
+#undef MAKE_NUMBER_FORMAT_1
+#undef MAKE_NUMBER_FORMAT_2
+#undef NUMBER_FORMAT
+
+  return result;
+}
+
+void CFHtmlExtractMetadata(const std::string& cf_html,
+                           std::string* base_url,
+                           size_t* html_start,
+                           size_t* fragment_start,
+                           size_t* fragment_end) {
+  // Obtain base_url if present.
+  if (base_url) {
+    static std::string src_url_str("SourceURL:");
+    size_t line_start = cf_html.find(src_url_str);
+    if (line_start != std::string::npos) {
+      size_t src_end = cf_html.find("\n", line_start);
+      size_t src_start = line_start + src_url_str.length();
+      if (src_end != std::string::npos && src_start != std::string::npos) {
+        *base_url = cf_html.substr(src_start, src_end - src_start);
+      }
+    }
+  }
+
+  // Find the markup between "<!--StartFragment-->" and "<!--EndFragment-->".
+  // If the comments cannot be found, like copying from OpenOffice Writer,
+  // we simply fall back to using StartFragment/EndFragment bytecount values
+  // to determine the fragment indexes.
+  std::string cf_html_lower = cf_html;
+  size_t markup_start = cf_html_lower.find("<html", 0);
+  if (html_start) {
+    *html_start = markup_start;
+  }
+  size_t tag_start = cf_html.find("<!--StartFragment", markup_start);
+  if (tag_start == std::string::npos) {
+    static std::string start_fragment_str("StartFragment:");
+    size_t start_fragment_start = cf_html.find(start_fragment_str);
+    if (start_fragment_start != std::string::npos) {
+      *fragment_start =
+          static_cast<size_t>(atoi(cf_html.c_str() + start_fragment_start +
+                                   start_fragment_str.length()));
+    }
+
+    static std::string end_fragment_str("EndFragment:");
+    size_t end_fragment_start = cf_html.find(end_fragment_str);
+    if (end_fragment_start != std::string::npos) {
+      *fragment_end = static_cast<size_t>(atoi(
+          cf_html.c_str() + end_fragment_start + end_fragment_str.length()));
+    }
+  } else {
+    *fragment_start = cf_html.find('>', tag_start) + 1;
+    size_t tag_end = cf_html.rfind("<!--EndFragment", std::string::npos);
+    *fragment_end = cf_html.rfind('<', tag_end);
+  }
+}
+
+void CFHtmlToHtml(const std::string& cf_html,
+                  std::string* html,
+                  std::string* base_url) {
+  size_t frag_start = std::string::npos;
+  size_t frag_end = std::string::npos;
+
+  CFHtmlExtractMetadata(cf_html, base_url, nullptr, &frag_start, &frag_end);
+
+  if (html && frag_start != std::string::npos &&
+      frag_end != std::string::npos) {
+    *html = cf_html.substr(frag_start, frag_end - frag_start);
+  }
+}
+
+const DWORD moz_url_format = ::RegisterClipboardFormat(L"text/x-moz-url");
+const DWORD html_format = ::RegisterClipboardFormat(L"HTML Format");
+const DWORD file_desc_format = ::RegisterClipboardFormat(CFSTR_FILEDESCRIPTOR);
+const DWORD file_contents_format =
+    ::RegisterClipboardFormat(CFSTR_FILECONTENTS);
+
+bool DragDataToDataObject(CefRefPtr<CefDragData> drag_data,
+                          IDataObject** data_object) {
+  const int kMaxDataObjects = 10;
+  FORMATETC fmtetcs[kMaxDataObjects];
+  STGMEDIUM stgmeds[kMaxDataObjects];
+  FORMATETC fmtetc = {0, nullptr, DVASPECT_CONTENT, -1, TYMED_HGLOBAL};
+  int curr_index = 0;
+  CefString text = drag_data->GetFragmentText();
+  if (!text.empty()) {
+    fmtetc.cfFormat = CF_UNICODETEXT;
+    fmtetcs[curr_index] = fmtetc;
+    GetStorageForString(&stgmeds[curr_index], text.ToWString());
+    curr_index++;
+  }
+  if (drag_data->IsLink() && !drag_data->GetLinkURL().empty()) {
+    std::wstring x_moz_url_str = drag_data->GetLinkURL().ToWString();
+    x_moz_url_str += '\n';
+    x_moz_url_str += drag_data->GetLinkTitle().ToWString();
+    fmtetc.cfFormat = moz_url_format;
+    fmtetcs[curr_index] = fmtetc;
+    GetStorageForString(&stgmeds[curr_index], x_moz_url_str);
+    curr_index++;
+  }
+  CefString html = drag_data->GetFragmentHtml();
+  if (!html.empty()) {
+    CefString base_url = drag_data->GetFragmentBaseURL();
+    std::string cfhtml = HtmlToCFHtml(html.ToString(), base_url.ToString());
+    fmtetc.cfFormat = html_format;
+    fmtetcs[curr_index] = fmtetc;
+    GetStorageForString(&stgmeds[curr_index], cfhtml);
+    curr_index++;
+  }
+
+  size_t bufferSize = drag_data->GetFileContents(nullptr);
+  if (bufferSize) {
+    CefRefPtr<BytesWriteHandler> handler = new BytesWriteHandler(bufferSize);
+    CefRefPtr<CefStreamWriter> writer =
+        CefStreamWriter::CreateForHandler(handler.get());
+    drag_data->GetFileContents(writer);
+    DCHECK_EQ(handler->GetDataSize(), static_cast<int64>(bufferSize));
+    CefString fileName = drag_data->GetFileName();
+    GetStorageForFileDescriptor(&stgmeds[curr_index], fileName.ToWString());
+    fmtetc.cfFormat = file_desc_format;
+    fmtetcs[curr_index] = fmtetc;
+    curr_index++;
+    GetStorageForBytes(&stgmeds[curr_index], handler->GetData(),
+                       handler->GetDataSize());
+    fmtetc.cfFormat = file_contents_format;
+    fmtetcs[curr_index] = fmtetc;
+    curr_index++;
+  }
+  DCHECK_LT(curr_index, kMaxDataObjects);
+
+  CComPtr<DataObjectWin> obj =
+      DataObjectWin::Create(fmtetcs, stgmeds, curr_index);
+  (*data_object) = obj.Detach();
+  return true;
+}
+
+CefRefPtr<CefDragData> DataObjectToDragData(IDataObject* data_object) {
+  CefRefPtr<CefDragData> drag_data = CefDragData::Create();
+  IEnumFORMATETC* enumFormats = nullptr;
+  HRESULT res = data_object->EnumFormatEtc(DATADIR_GET, &enumFormats);
+  if (res != S_OK)
+    return drag_data;
+  enumFormats->Reset();
+  const int kCelt = 10;
+
+  ULONG celtFetched;
+  do {
+    celtFetched = kCelt;
+    FORMATETC rgelt[kCelt];
+    res = enumFormats->Next(kCelt, rgelt, &celtFetched);
+    for (unsigned i = 0; i < celtFetched; i++) {
+      CLIPFORMAT format = rgelt[i].cfFormat;
+      if (!(format == CF_UNICODETEXT || format == CF_TEXT ||
+            format == moz_url_format || format == html_format ||
+            format == CF_HDROP) ||
+          rgelt[i].tymed != TYMED_HGLOBAL)
+        continue;
+      STGMEDIUM medium;
+      if (data_object->GetData(&rgelt[i], &medium) == S_OK) {
+        if (!medium.hGlobal) {
+          ReleaseStgMedium(&medium);
+          continue;
+        }
+        void* hGlobal = GlobalLock(medium.hGlobal);
+        if (!hGlobal) {
+          ReleaseStgMedium(&medium);
+          continue;
+        }
+        if (format == CF_UNICODETEXT) {
+          CefString text;
+          text.FromWString((std::wstring::value_type*)hGlobal);
+          drag_data->SetFragmentText(text);
+        } else if (format == CF_TEXT) {
+          CefString text;
+          text.FromString((std::string::value_type*)hGlobal);
+          drag_data->SetFragmentText(text);
+        } else if (format == moz_url_format) {
+          std::wstring html((std::wstring::value_type*)hGlobal);
+          size_t pos = html.rfind('\n');
+          CefString url(html.substr(0, pos));
+          CefString title(html.substr(pos + 1));
+          drag_data->SetLinkURL(url);
+          drag_data->SetLinkTitle(title);
+        } else if (format == html_format) {
+          std::string cf_html((std::string::value_type*)hGlobal);
+          std::string base_url;
+          std::string html;
+          CFHtmlToHtml(cf_html, &html, &base_url);
+          drag_data->SetFragmentHtml(html);
+          drag_data->SetFragmentBaseURL(base_url);
+        }
+        if (format == CF_HDROP) {
+          HDROP hdrop = (HDROP)hGlobal;
+          const int kMaxFilenameLen = 4096;
+          const unsigned num_files = DragQueryFileW(hdrop, 0xffffffff, 0, 0);
+          for (unsigned int x = 0; x < num_files; ++x) {
+            wchar_t filename[kMaxFilenameLen];
+            if (!DragQueryFileW(hdrop, x, filename, kMaxFilenameLen))
+              continue;
+            WCHAR* name = wcsrchr(filename, '\\');
+            drag_data->AddFile(filename, (name ? name + 1 : filename));
+          }
+        }
+        if (medium.hGlobal)
+          GlobalUnlock(medium.hGlobal);
+        if (format == CF_HDROP)
+          DragFinish((HDROP)hGlobal);
+        else
+          ReleaseStgMedium(&medium);
+      }
+    }
+  } while (res == S_OK);
+  enumFormats->Release();
+  return drag_data;
+}
+
+}  // namespace
+
+CComPtr<DropTargetWin> DropTargetWin::Create(OsrDragEvents* callback,
+                                             HWND hWnd) {
+  return CComPtr<DropTargetWin>(new DropTargetWin(callback, hWnd));
+}
+
+HRESULT DropTargetWin::DragEnter(IDataObject* data_object,
+                                 DWORD key_state,
+                                 POINTL cursor_position,
+                                 DWORD* effect) {
+  if (!callback_)
+    return E_UNEXPECTED;
+
+  CefRefPtr<CefDragData> drag_data = current_drag_data_;
+  if (!drag_data) {
+    drag_data = DataObjectToDragData(data_object);
+  }
+  CefMouseEvent ev = ToMouseEvent(cursor_position, key_state, hWnd_);
+  CefBrowserHost::DragOperationsMask mask = DropEffectToDragOperation(*effect);
+  mask = callback_->OnDragEnter(drag_data, ev, mask);
+  *effect = DragOperationToDropEffect(mask);
+  return S_OK;
+}
+
+CefBrowserHost::DragOperationsMask DropTargetWin::StartDragging(
+    CefRefPtr<CefBrowser> browser,
+    CefRefPtr<CefDragData> drag_data,
+    CefRenderHandler::DragOperationsMask allowed_ops,
+    int x,
+    int y) {
+  CComPtr<IDataObject> dataObject;
+  DWORD resEffect = DROPEFFECT_NONE;
+  if (DragDataToDataObject(drag_data, &dataObject)) {
+    CComPtr<DropSourceWin> dropSource = DropSourceWin::Create();
+    DWORD effect = DragOperationToDropEffect(allowed_ops);
+    current_drag_data_ = drag_data->Clone();
+    current_drag_data_->ResetFileContents();
+    HRESULT res = DoDragDrop(dataObject, dropSource, effect, &resEffect);
+    if (res != DRAGDROP_S_DROP)
+      resEffect = DROPEFFECT_NONE;
+    current_drag_data_ = nullptr;
+  }
+  return DropEffectToDragOperation(resEffect);
+}
+
+HRESULT DropTargetWin::DragOver(DWORD key_state,
+                                POINTL cursor_position,
+                                DWORD* effect) {
+  if (!callback_)
+    return E_UNEXPECTED;
+  CefMouseEvent ev = ToMouseEvent(cursor_position, key_state, hWnd_);
+  CefBrowserHost::DragOperationsMask mask = DropEffectToDragOperation(*effect);
+  mask = callback_->OnDragOver(ev, mask);
+  *effect = DragOperationToDropEffect(mask);
+  return S_OK;
+}
+
+HRESULT DropTargetWin::DragLeave() {
+  if (!callback_)
+    return E_UNEXPECTED;
+  callback_->OnDragLeave();
+  return S_OK;
+}
+
+HRESULT DropTargetWin::Drop(IDataObject* data_object,
+                            DWORD key_state,
+                            POINTL cursor_position,
+                            DWORD* effect) {
+  if (!callback_)
+    return E_UNEXPECTED;
+  CefMouseEvent ev = ToMouseEvent(cursor_position, key_state, hWnd_);
+  CefBrowserHost::DragOperationsMask mask = DropEffectToDragOperation(*effect);
+  mask = callback_->OnDrop(ev, mask);
+  *effect = DragOperationToDropEffect(mask);
+  return S_OK;
+}
+
+CComPtr<DropSourceWin> DropSourceWin::Create() {
+  return CComPtr<DropSourceWin>(new DropSourceWin());
+}
+
+HRESULT DropSourceWin::GiveFeedback(DWORD dwEffect) {
+  return DRAGDROP_S_USEDEFAULTCURSORS;
+}
+
+HRESULT DropSourceWin::QueryContinueDrag(BOOL fEscapePressed,
+                                         DWORD grfKeyState) {
+  if (fEscapePressed) {
+    return DRAGDROP_S_CANCEL;
+  }
+
+  if (!(grfKeyState & MK_LBUTTON)) {
+    return DRAGDROP_S_DROP;
+  }
+
+  return S_OK;
+}
+
+HRESULT DragEnumFormatEtc::CreateEnumFormatEtc(
+    UINT cfmt,
+    FORMATETC* afmt,
+    IEnumFORMATETC** ppEnumFormatEtc) {
+  if (cfmt == 0 || afmt == 0 || ppEnumFormatEtc == 0)
+    return E_INVALIDARG;
+
+  *ppEnumFormatEtc = new DragEnumFormatEtc(afmt, cfmt);
+
+  return (*ppEnumFormatEtc) ? S_OK : E_OUTOFMEMORY;
+}
+
+HRESULT DragEnumFormatEtc::Next(ULONG celt,
+                                FORMATETC* pFormatEtc,
+                                ULONG* pceltFetched) {
+  ULONG copied = 0;
+
+  // copy the FORMATETC structures into the caller's buffer
+  while (m_nIndex < m_nNumFormats && copied < celt) {
+    DeepCopyFormatEtc(&pFormatEtc[copied], &m_pFormatEtc[m_nIndex]);
+    copied++;
+    m_nIndex++;
+  }
+
+  // store result
+  if (pceltFetched != 0)
+    *pceltFetched = copied;
+
+  // did we copy all that was requested?
+  return (copied == celt) ? S_OK : S_FALSE;
+}
+HRESULT DragEnumFormatEtc::Skip(ULONG celt) {
+  m_nIndex += celt;
+  return (m_nIndex <= m_nNumFormats) ? S_OK : S_FALSE;
+}
+HRESULT DragEnumFormatEtc::Reset(void) {
+  m_nIndex = 0;
+  return S_OK;
+}
+HRESULT DragEnumFormatEtc::Clone(IEnumFORMATETC** ppEnumFormatEtc) {
+  HRESULT hResult;
+
+  // make a duplicate enumerator
+  hResult = CreateEnumFormatEtc(m_nNumFormats, m_pFormatEtc, ppEnumFormatEtc);
+
+  if (hResult == S_OK) {
+    // manually set the index state
+    reinterpret_cast<DragEnumFormatEtc*>(*ppEnumFormatEtc)->m_nIndex = m_nIndex;
+  }
+
+  return hResult;
+}
+
+DragEnumFormatEtc::DragEnumFormatEtc(FORMATETC* pFormatEtc, int nNumFormats) {
+  AddRef();
+
+  m_nIndex = 0;
+  m_nNumFormats = nNumFormats;
+  m_pFormatEtc = new FORMATETC[nNumFormats];
+
+  // make a new copy of each FORMATETC structure
+  for (int i = 0; i < nNumFormats; i++) {
+    DeepCopyFormatEtc(&m_pFormatEtc[i], &pFormatEtc[i]);
+  }
+}
+DragEnumFormatEtc::~DragEnumFormatEtc() {
+  // first free any DVTARGETDEVICE structures
+  for (ULONG i = 0; i < m_nNumFormats; i++) {
+    if (m_pFormatEtc[i].ptd)
+      CoTaskMemFree(m_pFormatEtc[i].ptd);
+  }
+
+  // now free the main array
+  delete[] m_pFormatEtc;
+}
+
+void DragEnumFormatEtc::DeepCopyFormatEtc(FORMATETC* dest, FORMATETC* source) {
+  // copy the source FORMATETC into dest
+  *dest = *source;
+  if (source->ptd) {
+    // allocate memory for the DVTARGETDEVICE if necessary
+    dest->ptd = reinterpret_cast<DVTARGETDEVICE*>(
+        CoTaskMemAlloc(sizeof(DVTARGETDEVICE)));
+
+    // copy the contents of the source DVTARGETDEVICE into dest->ptd
+    *(dest->ptd) = *(source->ptd);
+  }
+}
+
+CComPtr<DataObjectWin> DataObjectWin::Create(FORMATETC* fmtetc,
+                                             STGMEDIUM* stgmed,
+                                             int count) {
+  return CComPtr<DataObjectWin>(new DataObjectWin(fmtetc, stgmed, count));
+}
+
+HRESULT DataObjectWin::GetDataHere(FORMATETC* pFormatEtc, STGMEDIUM* pmedium) {
+  return E_NOTIMPL;
+}
+
+HRESULT DataObjectWin::QueryGetData(FORMATETC* pFormatEtc) {
+  return (LookupFormatEtc(pFormatEtc) == -1) ? DV_E_FORMATETC : S_OK;
+}
+
+HRESULT DataObjectWin::GetCanonicalFormatEtc(FORMATETC* pFormatEct,
+                                             FORMATETC* pFormatEtcOut) {
+  pFormatEtcOut->ptd = nullptr;
+  return E_NOTIMPL;
+}
+
+HRESULT DataObjectWin::SetData(FORMATETC* pFormatEtc,
+                               STGMEDIUM* pMedium,
+                               BOOL fRelease) {
+  return E_NOTIMPL;
+}
+
+HRESULT DataObjectWin::DAdvise(FORMATETC* pFormatEtc,
+                               DWORD advf,
+                               IAdviseSink*,
+                               DWORD*) {
+  return E_NOTIMPL;
+}
+
+HRESULT DataObjectWin::DUnadvise(DWORD dwConnection) {
+  return E_NOTIMPL;
+}
+
+HRESULT DataObjectWin::EnumDAdvise(IEnumSTATDATA** ppEnumAdvise) {
+  return E_NOTIMPL;
+}
+
+HRESULT DataObjectWin::EnumFormatEtc(DWORD dwDirection,
+                                     IEnumFORMATETC** ppEnumFormatEtc) {
+  return DragEnumFormatEtc::CreateEnumFormatEtc(m_nNumFormats, m_pFormatEtc,
+                                                ppEnumFormatEtc);
+}
+
+HRESULT DataObjectWin::GetData(FORMATETC* pFormatEtc, STGMEDIUM* pMedium) {
+  int idx;
+
+  // try to match the specified FORMATETC with one of our supported formats
+  if ((idx = LookupFormatEtc(pFormatEtc)) == -1)
+    return DV_E_FORMATETC;
+
+  // found a match - transfer data into supplied storage medium
+  pMedium->tymed = m_pFormatEtc[idx].tymed;
+  pMedium->pUnkForRelease = 0;
+
+  // copy the data into the caller's storage medium
+  switch (m_pFormatEtc[idx].tymed) {
+    case TYMED_HGLOBAL:
+      pMedium->hGlobal = DupGlobalMem(m_pStgMedium[idx].hGlobal);
+      break;
+
+    default:
+      return DV_E_FORMATETC;
+  }
+  return S_OK;
+}
+
+HGLOBAL DataObjectWin::DupGlobalMem(HGLOBAL hMem) {
+  DWORD len = GlobalSize(hMem);
+  PVOID source = GlobalLock(hMem);
+  PVOID dest = GlobalAlloc(GMEM_FIXED, len);
+
+  memcpy(dest, source, len);
+  GlobalUnlock(hMem);
+  return dest;
+}
+
+int DataObjectWin::LookupFormatEtc(FORMATETC* pFormatEtc) {
+  // check each of our formats in turn to see if one matches
+  for (int i = 0; i < m_nNumFormats; i++) {
+    if ((m_pFormatEtc[i].tymed & pFormatEtc->tymed) &&
+        m_pFormatEtc[i].cfFormat == pFormatEtc->cfFormat &&
+        m_pFormatEtc[i].dwAspect == pFormatEtc->dwAspect) {
+      // return index of stored format
+      return i;
+    }
+  }
+
+  // error, format not found
+  return -1;
+}
+
+DataObjectWin::DataObjectWin(FORMATETC* fmtetc, STGMEDIUM* stgmed, int count)
+    : ref_count_(0) {
+  m_nNumFormats = count;
+
+  m_pFormatEtc = new FORMATETC[count];
+  m_pStgMedium = new STGMEDIUM[count];
+
+  for (int i = 0; i < count; i++) {
+    m_pFormatEtc[i] = fmtetc[i];
+    m_pStgMedium[i] = stgmed[i];
+  }
+}
+
+
+#endif  // defined(CEF_USE_ATL)

src/CEF/OsrDragdropWin.h

@@ -0,0 +1,183 @@
+// Copyright (c) 2014 The Chromium Embedded Framework Authors. All rights
+// reserved. Use of this source code is governed by a BSD-style license that
+// can be found in the LICENSE file.
+
+#pragma once
+
+// When generating projects with CMake the CEF_USE_ATL value will be defined
+// automatically if using a supported Visual Studio version. Pass -DUSE_ATL=OFF
+// to the CMake command-line to disable use of ATL.
+// Uncomment this line to manually enable ATL support.
+// #define CEF_USE_ATL 1
+
+#if defined(CEF_USE_ATL)
+
+#include <atlcomcli.h>
+#include <objidl.h>
+#include <stdio.h>
+
+#include "CEF/OsrDragdropEvents.h"
+
+#define DEFAULT_QUERY_INTERFACE(__Class)                            \
+  HRESULT __stdcall QueryInterface(const IID& iid, void** object) { \
+    *object = nullptr;                                              \
+    if (IsEqualIID(iid, IID_IUnknown)) {                            \
+      IUnknown* obj = this;                                         \
+      *object = obj;                                                \
+    } else if (IsEqualIID(iid, IID_##__Class)) {                    \
+      __Class* obj = this;                                          \
+      *object = obj;                                                \
+    } else {                                                        \
+      return E_NOINTERFACE;                                         \
+    }                                                               \
+    AddRef();                                                       \
+    return S_OK;                                                    \
+  }
+#define IUNKNOWN_IMPLEMENTATION                     \
+  ULONG __stdcall AddRef() { return ++ref_count_; } \
+  ULONG __stdcall Release() {                       \
+    if (--ref_count_ == 0) {                        \
+      delete this;                                  \
+      return 0U;                                    \
+    }                                               \
+    return ref_count_;                              \
+  }                                                 \
+                                                    \
+ protected:                                         \
+  ULONG ref_count_;
+
+class DropTargetWin : public IDropTarget {
+ public:
+  static CComPtr<DropTargetWin> Create(OsrDragEvents* callback, HWND hWnd);
+
+  CefBrowserHost::DragOperationsMask StartDragging(
+      CefRefPtr<CefBrowser> browser,
+      CefRefPtr<CefDragData> drag_data,
+      CefRenderHandler::DragOperationsMask allowed_ops,
+      int x,
+      int y);
+
+  // IDropTarget implementation:
+  HRESULT __stdcall DragEnter(IDataObject* data_object,
+                              DWORD key_state,
+                              POINTL cursor_position,
+                              DWORD* effect);
+
+  HRESULT __stdcall DragOver(DWORD key_state,
+                             POINTL cursor_position,
+                             DWORD* effect);
+
+  HRESULT __stdcall DragLeave();
+
+  HRESULT __stdcall Drop(IDataObject* data_object,
+                         DWORD key_state,
+                         POINTL cursor_position,
+                         DWORD* effect);
+
+  DEFAULT_QUERY_INTERFACE(IDropTarget)
+  IUNKNOWN_IMPLEMENTATION
+
+ protected:
+  DropTargetWin(OsrDragEvents* callback, HWND hWnd)
+      : ref_count_(0), callback_(callback), hWnd_(hWnd) {}
+  virtual ~DropTargetWin() {}
+
+ private:
+  OsrDragEvents* callback_;
+  HWND hWnd_;
+
+  CefRefPtr<CefDragData> current_drag_data_;
+};
+
+class DropSourceWin : public IDropSource {
+ public:
+  static CComPtr<DropSourceWin> Create();
+
+  // IDropSource implementation:
+  HRESULT __stdcall GiveFeedback(DWORD dwEffect);
+
+  HRESULT __stdcall QueryContinueDrag(BOOL fEscapePressed, DWORD grfKeyState);
+
+  DEFAULT_QUERY_INTERFACE(IDropSource)
+  IUNKNOWN_IMPLEMENTATION
+
+ protected:
+  explicit DropSourceWin() : ref_count_(0) {}
+  virtual ~DropSourceWin() {}
+};
+
+class DragEnumFormatEtc : public IEnumFORMATETC {
+ public:
+  static HRESULT CreateEnumFormatEtc(UINT cfmt,
+                                     FORMATETC* afmt,
+                                     IEnumFORMATETC** ppEnumFormatEtc);
+
+  //
+  // IEnumFormatEtc members
+  //
+  HRESULT __stdcall Next(ULONG celt,
+                         FORMATETC* pFormatEtc,
+                         ULONG* pceltFetched);
+  HRESULT __stdcall Skip(ULONG celt);
+  HRESULT __stdcall Reset(void);
+  HRESULT __stdcall Clone(IEnumFORMATETC** ppEnumFormatEtc);
+
+  //
+  // Construction / Destruction
+  //
+  DragEnumFormatEtc(FORMATETC* pFormatEtc, int nNumFormats);
+  virtual ~DragEnumFormatEtc();
+
+  static void DeepCopyFormatEtc(FORMATETC* dest, FORMATETC* source);
+
+  DEFAULT_QUERY_INTERFACE(IEnumFORMATETC)
+  IUNKNOWN_IMPLEMENTATION
+
+ private:
+  ULONG m_nIndex;           // current enumerator index
+  ULONG m_nNumFormats;      // number of FORMATETC members
+  FORMATETC* m_pFormatEtc;  // array of FORMATETC objects
+};
+
+class DataObjectWin : public IDataObject {
+ public:
+  static CComPtr<DataObjectWin> Create(FORMATETC* fmtetc,
+                                       STGMEDIUM* stgmed,
+                                       int count);
+
+  // IDataObject memberS
+  HRESULT __stdcall GetDataHere(FORMATETC* pFormatEtc, STGMEDIUM* pmedium);
+  HRESULT __stdcall QueryGetData(FORMATETC* pFormatEtc);
+  HRESULT __stdcall GetCanonicalFormatEtc(FORMATETC* pFormatEct,
+                                          FORMATETC* pFormatEtcOut);
+  HRESULT __stdcall SetData(FORMATETC* pFormatEtc,
+                            STGMEDIUM* pMedium,
+                            BOOL fRelease);
+  HRESULT __stdcall DAdvise(FORMATETC* pFormatEtc,
+                            DWORD advf,
+                            IAdviseSink*,
+                            DWORD*);
+  HRESULT __stdcall DUnadvise(DWORD dwConnection);
+  HRESULT __stdcall EnumDAdvise(IEnumSTATDATA** ppEnumAdvise);
+
+  HRESULT __stdcall EnumFormatEtc(DWORD dwDirection,
+                                  IEnumFORMATETC** ppEnumFormatEtc);
+  HRESULT __stdcall GetData(FORMATETC* pFormatEtc, STGMEDIUM* pMedium);
+
+  DEFAULT_QUERY_INTERFACE(IDataObject)
+  IUNKNOWN_IMPLEMENTATION
+
+ protected:
+  int m_nNumFormats;
+  FORMATETC* m_pFormatEtc;
+  STGMEDIUM* m_pStgMedium;
+
+  static HGLOBAL DupGlobalMem(HGLOBAL hMem);
+
+  int LookupFormatEtc(FORMATETC* pFormatEtc);
+
+  explicit DataObjectWin(FORMATETC* fmtetc, STGMEDIUM* stgmed, int count);
+  virtual ~DataObjectWin() {}
+};
+
+#endif  // defined(CEF_USE_ATL)

src/CEF/OsrImeHandlerWin.cpp

@@ -0,0 +1,385 @@
+// Copyright 2016 The Chromium Embedded Framework Authors. Portions copyright
+// 2013 The Chromium Authors. All rights reserved. Use of this source code is
+// governed by a BSD-style license that can be found in the LICENSE file.
+
+// Implementation based on ui/base/ime/win/imm32_manager.cc from Chromium.
+
+#include <msctf.h>
+#include <windowsx.h>
+
+#include "include/base/cef_build.h"
+#include "CEF/OsrImeHandlerWin.h"
+#include "CEF/resource.h"
+#include "CEF/GeometryUtil.h"
+#include "CEF/MainMessageLoop.h"
+#include "CEF/UtilWin.h"
+
+#define ColorUNDERLINE \
+  0xFF000000  // Black SkColor value for underline,
+              // same as Blink.
+#define ColorBKCOLOR \
+  0x00000000  // White SkColor value for background,
+              // same as Blink.
+
+// Determines whether or not the given attribute represents a selection
+bool IsSelectionAttribute(char attribute) {
+  return (attribute == ATTR_TARGET_CONVERTED ||
+          attribute == ATTR_TARGET_NOTCONVERTED);
+}
+
+// Helper function for OsrImeHandlerWin::GetCompositionInfo() method,
+// to get the target range that's selected by the user in the current
+// composition string.
+void GetCompositionSelectionRange(HIMC imc,
+                                  int* target_start,
+                                  int* target_end) {
+  int attribute_size = ::ImmGetCompositionString(imc, GCS_COMPATTR, nullptr, 0);
+  if (attribute_size > 0) {
+    int start = 0;
+    int end = 0;
+    std::vector<char> attribute_data(attribute_size);
+
+    ::ImmGetCompositionString(imc, GCS_COMPATTR, &attribute_data[0],
+                              attribute_size);
+    for (start = 0; start < attribute_size; ++start) {
+      if (IsSelectionAttribute(attribute_data[start]))
+        break;
+    }
+    for (end = start; end < attribute_size; ++end) {
+      if (!IsSelectionAttribute(attribute_data[end]))
+        break;
+    }
+
+    *target_start = start;
+    *target_end = end;
+  }
+}
+
+// Helper function for OsrImeHandlerWin::GetCompositionInfo() method, to get
+// underlines information of the current composition string.
+void GetCompositionUnderlines(
+    HIMC imc,
+    int target_start,
+    int target_end,
+    std::vector<CefCompositionUnderline>& underlines) {
+  int clause_size = ::ImmGetCompositionString(imc, GCS_COMPCLAUSE, nullptr, 0);
+  int clause_length = clause_size / sizeof(uint32);
+  if (clause_length) {
+    std::vector<uint32> clause_data(clause_length);
+
+    ::ImmGetCompositionString(imc, GCS_COMPCLAUSE, &clause_data[0],
+                              clause_size);
+    for (int i = 0; i < clause_length - 1; ++i) {
+      cef_composition_underline_t underline;
+      underline.range.from = clause_data[i];
+      underline.range.to = clause_data[i + 1];
+      underline.color = ColorUNDERLINE;
+      underline.background_color = ColorBKCOLOR;
+      underline.thick = 0;
+
+      // Use thick underline for the target clause.
+      if (underline.range.from >= target_start &&
+          underline.range.to <= target_end) {
+        underline.thick = 1;
+      }
+      underlines.push_back(underline);
+    }
+  }
+}
+
+OsrImeHandlerWin::OsrImeHandlerWin(HWND hwnd)
+    : is_composing_(false),
+      input_language_id_(LANG_USER_DEFAULT),
+      system_caret_(false),
+      cursor_index_(-1),
+      hwnd_(hwnd) {
+  ime_rect_ = {-1, -1, 0, 0};
+}
+
+OsrImeHandlerWin::~OsrImeHandlerWin() {
+  DestroyImeWindow();
+}
+
+void OsrImeHandlerWin::SetInputLanguage() {
+  // Retrieve the current input language from the system's keyboard layout.
+  // Using GetKeyboardLayoutName instead of GetKeyboardLayout, because
+  // the language from GetKeyboardLayout is the language under where the
+  // keyboard layout is installed. And the language from GetKeyboardLayoutName
+  // indicates the language of the keyboard layout itself.
+  // See crbug.com/344834.
+  WCHAR keyboard_layout[KL_NAMELENGTH];
+  if (::GetKeyboardLayoutNameW(keyboard_layout)) {
+    input_language_id_ =
+        static_cast<LANGID>(_wtoi(&keyboard_layout[KL_NAMELENGTH >> 1]));
+  } else {
+    input_language_id_ = 0x0409;  // Fallback to en-US.
+  }
+}
+
+void OsrImeHandlerWin::CreateImeWindow() {
+  // Chinese/Japanese IMEs somehow ignore function calls to
+  // ::ImmSetCandidateWindow(), and use the position of the current system
+  // caret instead -::GetCaretPos().
+  // Therefore, we create a temporary system caret for Chinese IMEs and use
+  // it during this input context.
+  // Since some third-party Japanese IME also uses ::GetCaretPos() to determine
+  // their window position, we also create a caret for Japanese IMEs.
+  if (PRIMARYLANGID(input_language_id_) == LANG_CHINESE ||
+      PRIMARYLANGID(input_language_id_) == LANG_JAPANESE) {
+    if (!system_caret_) {
+      if (::CreateCaret(hwnd_, nullptr, 1, 1))
+        system_caret_ = true;
+    }
+  }
+}
+
+void OsrImeHandlerWin::DestroyImeWindow() {
+  // Destroy the system caret if we have created for this IME input context.
+  if (system_caret_) {
+    ::DestroyCaret();
+    system_caret_ = false;
+  }
+}
+
+void OsrImeHandlerWin::MoveImeWindow() {
+  // Does nothing when the target window has no input focus.
+  if (GetFocus() != hwnd_)
+    return;
+
+  CefRect rc = ime_rect_;
+  int location = cursor_index_;
+
+  // If location is not specified fall back to the composition range start.
+  if (location == -1)
+    location = composition_range_.from;
+
+  // Offset location by the composition range start if required.
+  if (location >= composition_range_.from)
+    location -= composition_range_.from;
+
+  if (location < static_cast<int>(composition_bounds_.size()))
+    rc = composition_bounds_[location];
+  else
+    return;
+
+  HIMC imc = ::ImmGetContext(hwnd_);
+  if (imc) {
+    const int kCaretMargin = 1;
+    if (PRIMARYLANGID(input_language_id_) == LANG_CHINESE) {
+      // Chinese IMEs ignore function calls to ::ImmSetCandidateWindow()
+      // when a user disables TSF (Text Service Framework) and CUAS (Cicero
+      // Unaware Application Support).
+      // On the other hand, when a user enables TSF and CUAS, Chinese IMEs
+      // ignore the position of the current system caret and use the
+      // parameters given to ::ImmSetCandidateWindow() with its 'dwStyle'
+      // parameter CFS_CANDIDATEPOS.
+      // Therefore, we do not only call ::ImmSetCandidateWindow() but also
+      // set the positions of the temporary system caret if it exists.
+      CANDIDATEFORM candidate_position = {
+          0, CFS_CANDIDATEPOS, {rc.x, rc.y}, {0, 0, 0, 0}};
+      ::ImmSetCandidateWindow(imc, &candidate_position);
+    }
+    if (system_caret_) {
+      switch (PRIMARYLANGID(input_language_id_)) {
+        case LANG_JAPANESE:
+          ::SetCaretPos(rc.x, rc.y + rc.height);
+          break;
+        default:
+          ::SetCaretPos(rc.x, rc.y);
+          break;
+      }
+    }
+
+    if (PRIMARYLANGID(input_language_id_) == LANG_KOREAN) {
+      // Korean IMEs require the lower-left corner of the caret to move their
+      // candidate windows.
+      rc.y += kCaretMargin;
+    }
+
+    // Japanese IMEs and Korean IMEs also use the rectangle given to
+    // ::ImmSetCandidateWindow() with its 'dwStyle' parameter CFS_EXCLUDE
+    // Therefore, we also set this parameter here.
+    CANDIDATEFORM exclude_rectangle = {
+        0,
+        CFS_EXCLUDE,
+        {rc.x, rc.y},
+        {rc.x, rc.y, rc.x + rc.width, rc.y + rc.height}};
+    ::ImmSetCandidateWindow(imc, &exclude_rectangle);
+
+    ::ImmReleaseContext(hwnd_, imc);
+  }
+}
+
+void OsrImeHandlerWin::CleanupComposition() {
+  // Notify the IMM attached to the given window to complete the ongoing
+  // composition (when given window is de-activated while composing and
+  // re-activated) and reset the composition status.
+  if (is_composing_) {
+    HIMC imc = ::ImmGetContext(hwnd_);
+    if (imc) {
+      ::ImmNotifyIME(imc, NI_COMPOSITIONSTR, CPS_COMPLETE, 0);
+      ::ImmReleaseContext(hwnd_, imc);
+    }
+    ResetComposition();
+  }
+}
+
+void OsrImeHandlerWin::ResetComposition() {
+  // Reset the composition status.
+  is_composing_ = false;
+  cursor_index_ = -1;
+}
+
+void OsrImeHandlerWin::GetCompositionInfo(
+    HIMC imc,
+    LPARAM lparam,
+    CefString& composition_text,
+    std::vector<CefCompositionUnderline>& underlines,
+    int& composition_start) {
+  // We only care about GCS_COMPATTR, GCS_COMPCLAUSE and GCS_CURSORPOS, and
+  // convert them into underlines and selection range respectively.
+  underlines.clear();
+
+  int length = static_cast<int>(composition_text.length());
+
+  // Find out the range selected by the user.
+  int target_start = length;
+  int target_end = length;
+  if (lparam & GCS_COMPATTR)
+    GetCompositionSelectionRange(imc, &target_start, &target_end);
+
+  // Retrieve the selection range information. If CS_NOMOVECARET is specified
+  // it means the cursor should not be moved and we therefore place the caret at
+  // the beginning of the composition string. Otherwise we should honour the
+  // GCS_CURSORPOS value if it's available.
+  // TODO(suzhe): Due to a bug in WebKit we currently can't use selection range
+  // with composition string.
+  // See: https://bugs.webkit.org/show_bug.cgi?id=40805
+  if (!(lparam & CS_NOMOVECARET) && (lparam & GCS_CURSORPOS)) {
+    // IMM32 does not support non-zero-width selection in a composition. So
+    // always use the caret position as selection range.
+    int cursor = ::ImmGetCompositionString(imc, GCS_CURSORPOS, nullptr, 0);
+    composition_start = cursor;
+  } else {
+    composition_start = 0;
+  }
+
+  // Retrieve the clause segmentations and convert them to underlines.
+  if (lparam & GCS_COMPCLAUSE)
+    GetCompositionUnderlines(imc, target_start, target_end, underlines);
+
+  // Set default underlines in case there is no clause information.
+  if (!underlines.size()) {
+    CefCompositionUnderline underline;
+    underline.color = ColorUNDERLINE;
+    underline.background_color = ColorBKCOLOR;
+    if (target_start > 0) {
+      underline.range.from = 0;
+      underline.range.to = target_start;
+      underline.thick = 0;
+      underlines.push_back(underline);
+    }
+    if (target_end > target_start) {
+      underline.range.from = target_start;
+      underline.range.to = target_end;
+      underline.thick = 1;
+      underlines.push_back(underline);
+    }
+    if (target_end < length) {
+      underline.range.from = target_end;
+      underline.range.to = length;
+      underline.thick = 0;
+      underlines.push_back(underline);
+    }
+  }
+}
+
+bool OsrImeHandlerWin::GetString(HIMC imc,
+                                 WPARAM lparam,
+                                 int type,
+                                 CefString& result) {
+  if (!(lparam & type))
+    return false;
+  LONG string_size = ::ImmGetCompositionString(imc, type, nullptr, 0);
+  if (string_size <= 0)
+    return false;
+
+  // For trailing nullptr - ImmGetCompositionString excludes that.
+  string_size += sizeof(WCHAR);
+
+  std::vector<wchar_t> buffer(string_size);
+  ::ImmGetCompositionString(imc, type, &buffer[0], string_size);
+  result.FromWString(&buffer[0]);
+  return true;
+}
+
+bool OsrImeHandlerWin::GetResult(LPARAM lparam, CefString& result) {
+  bool ret = false;
+  HIMC imc = ::ImmGetContext(hwnd_);
+  if (imc) {
+    ret = GetString(imc, lparam, GCS_RESULTSTR, result);
+    ::ImmReleaseContext(hwnd_, imc);
+  }
+  return ret;
+}
+
+bool OsrImeHandlerWin::GetComposition(
+    LPARAM lparam,
+    CefString& composition_text,
+    std::vector<CefCompositionUnderline>& underlines,
+    int& composition_start) {
+  bool ret = false;
+  HIMC imc = ::ImmGetContext(hwnd_);
+  if (imc) {
+    // Copy the composition string to the CompositionText object.
+    ret = GetString(imc, lparam, GCS_COMPSTR, composition_text);
+
+    if (ret) {
+      // Retrieve the composition underlines and selection range information.
+      GetCompositionInfo(imc, lparam, composition_text, underlines,
+                         composition_start);
+
+      // Mark that there is an ongoing composition.
+      is_composing_ = true;
+    }
+
+    ::ImmReleaseContext(hwnd_, imc);
+  }
+  return ret;
+}
+
+void OsrImeHandlerWin::DisableIME() {
+  CleanupComposition();
+  ::ImmAssociateContextEx(hwnd_, nullptr, 0);
+}
+
+void OsrImeHandlerWin::CancelIME() {
+  if (is_composing_) {
+    HIMC imc = ::ImmGetContext(hwnd_);
+    if (imc) {
+      ::ImmNotifyIME(imc, NI_COMPOSITIONSTR, CPS_CANCEL, 0);
+      ::ImmReleaseContext(hwnd_, imc);
+    }
+    ResetComposition();
+  }
+}
+
+void OsrImeHandlerWin::EnableIME() {
+  // Load the default IME context.
+  ::ImmAssociateContextEx(hwnd_, nullptr, IACE_DEFAULT);
+}
+
+void OsrImeHandlerWin::UpdateCaretPosition(int index) {
+  // Save the caret position.
+  cursor_index_ = index;
+  // Move the IME window.
+  MoveImeWindow();
+}
+
+void OsrImeHandlerWin::ChangeCompositionRange(
+    const CefRange& selection_range,
+    const std::vector<CefRect>& bounds) {
+  composition_range_ = selection_range;
+  composition_bounds_ = bounds;
+  MoveImeWindow();
+}

src/CEF/OsrImeHandlerWin.h

@@ -0,0 +1,108 @@
+// Copyright 2016 The Chromium Embedded Framework Authors. Portions copyright
+// 2013 The Chromium Authors. All rights reserved. Use of this source code is
+// governed by a BSD-style license that can be found in the LICENSE file.
+
+#pragma once
+
+#include <windows.h>
+#include <vector>
+
+#include "include/internal/cef_types_wrappers.h"
+
+
+// Handles IME for the native parent window that hosts an off-screen browser.
+// This object is only accessed on the CEF UI thread.
+class OsrImeHandlerWin {
+ public:
+  explicit OsrImeHandlerWin(HWND hwnd);
+  virtual ~OsrImeHandlerWin();
+
+  // Retrieves whether or not there is an ongoing composition.
+  bool is_composing() const { return is_composing_; }
+
+  // Retrieves the input language from Windows and update it.
+  void SetInputLanguage();
+
+  // Creates the IME caret windows if required.
+  void CreateImeWindow();
+
+  // Destroys the IME caret windows.
+  void DestroyImeWindow();
+
+  // Cleans up the all resources attached to the given IMM32Manager object, and
+  // reset its composition status.
+  void CleanupComposition();
+
+  // Resets the composition status and cancels the ongoing composition.
+  void ResetComposition();
+
+  // Retrieves a composition result of the ongoing composition if it exists.
+  bool GetResult(LPARAM lparam, CefString& result);
+
+  // Retrieves the current composition status of the ongoing composition.
+  // Includes composition text, underline information and selection range in the
+  // composition text. IMM32 does not support char selection.
+  bool GetComposition(LPARAM lparam,
+                      CefString& composition_text,
+                      std::vector<CefCompositionUnderline>& underlines,
+                      int& composition_start);
+
+  // Enables the IME attached to the given window.
+  virtual void EnableIME();
+
+  // Disables the IME attached to the given window.
+  virtual void DisableIME();
+
+  // Cancels an ongoing composition of the IME.
+  virtual void CancelIME();
+
+  // Updates the IME caret position of the given window.
+  void UpdateCaretPosition(int index);
+
+  // Updates the composition range. |selected_range| is the range of characters
+  // that have been selected. |character_bounds| is the bounds of each character
+  // in view device coordinates.
+  void ChangeCompositionRange(const CefRange& selection_range,
+                              const std::vector<CefRect>& character_bounds);
+
+  // Updates the position of the IME windows.
+  void MoveImeWindow();
+
+ private:
+  // Retrieves the composition information.
+  void GetCompositionInfo(HIMC imm_context,
+                          LPARAM lparam,
+                          CefString& composition_text,
+                          std::vector<CefCompositionUnderline>& underlines,
+                          int& composition_start);
+
+  // Retrieves a string from the IMM.
+  bool GetString(HIMC imm_context, WPARAM lparam, int type, CefString& result);
+
+  // Represents whether or not there is an ongoing composition.
+  bool is_composing_;
+
+  // The current composition character range and its bounds.
+  std::vector<CefRect> composition_bounds_;
+
+  // The current input Language ID retrieved from Windows -
+  // used for processing language-specific operations in IME.
+  LANGID input_language_id_;
+
+  // Represents whether or not the current input context has created a system
+  // caret to set the position of its IME candidate window.
+  bool system_caret_;
+
+  // The rectangle of the input caret retrieved from a renderer process.
+  CefRect ime_rect_;
+
+  // The current cursor index in composition string.
+  int cursor_index_;
+
+  // The composition range in the string. This may be used to determine the
+  // offset in composition bounds.
+  CefRange composition_range_;
+
+  // Hwnd associated with this instance.
+  HWND hwnd_;
+};

src/CEF/OsrRenderHandlerWin.cpp

@@ -0,0 +1,79 @@
+// Copyright 2018 The Chromium Embedded Framework Authors. All rights
+// reserved. Use of this source code is governed by a BSD-style license that
+// can be found in the LICENSE file.
+
+#include "CEF/OsrRenderHandlerWin.h"
+
+#include "include/base/cef_callback.h"
+#include "include/wrapper/cef_closure_task.h"
+#include "include/wrapper/cef_helpers.h"
+#include "CEF/UtilWin.h"
+
+OsrRenderHandlerWin::OsrRenderHandlerWin(const OsrRendererSettings& settings,
+                                         HWND hwnd)
+    : settings_(settings),
+      hwnd_(hwnd),
+      begin_frame_pending_(false),
+      weak_factory_(this) {
+  CEF_REQUIRE_UI_THREAD();
+  DCHECK(hwnd_);
+}
+
+OsrRenderHandlerWin::~OsrRenderHandlerWin() {
+  CEF_REQUIRE_UI_THREAD();
+}
+
+void OsrRenderHandlerWin::SetBrowser(CefRefPtr<CefBrowser> browser) {
+  CEF_REQUIRE_UI_THREAD();
+  browser_ = browser;
+  if (browser_ && settings_.external_begin_frame_enabled) {
+    // Start the BeginFrame timer.
+    Invalidate();
+  }
+}
+
+void OsrRenderHandlerWin::Invalidate() {
+  CEF_REQUIRE_UI_THREAD();
+  if (begin_frame_pending_) {
+    // The timer is already running.
+    return;
+  }
+
+  // Trigger the BeginFrame timer.
+  CHECK_GT(settings_.begin_frame_rate, 0);
+  const float delay_us = (1.0 / double(settings_.begin_frame_rate)) * 1000000.0;
+  TriggerBeginFrame(0, delay_us);
+}
+
+void OsrRenderHandlerWin::TriggerBeginFrame(uint64_t last_time_us,
+                                            float delay_us) {
+  if (begin_frame_pending_ && !settings_.external_begin_frame_enabled) {
+    // Render immediately and then wait for the next call to Invalidate() or
+    // On[Accelerated]Paint().
+    begin_frame_pending_ = false;
+    Render();
+    return;
+  }
+
+  const auto now = GetTimeNow();
+  float offset = now - last_time_us;
+  if (offset > delay_us) {
+    offset = delay_us;
+  }
+
+  if (!begin_frame_pending_) {
+    begin_frame_pending_ = true;
+  }
+
+  // Trigger again after the necessary delay to maintain the desired frame rate.
+  CefPostDelayedTask(TID_UI,
+                     base::BindOnce(&OsrRenderHandlerWin::TriggerBeginFrame,
+                                    weak_factory_.GetWeakPtr(), now, delay_us),
+                     int64(offset / 1000.0));
+
+  if (settings_.external_begin_frame_enabled && browser_) {
+    // We're running the BeginFrame timer. Trigger rendering via
+    // On[Accelerated]Paint().
+    browser_->GetHost()->SendExternalBeginFrame();
+  }
+}

src/CEF/OsrRenderHandlerWin.h

@@ -0,0 +1,74 @@
+// Copyright 2018 The Chromium Embedded Framework Authors. All rights
+// reserved. Use of this source code is governed by a BSD-style license that
+// can be found in the LICENSE file.
+
+#pragma once
+
+#include "include/base/cef_weak_ptr.h"
+#include "include/cef_render_handler.h"
+#include "CEF/OsrRendererSettings.h"
+
+// Abstract base class for implementing OSR rendering with different backends on
+// Windows. Methods are only called on the UI thread.
+class OsrRenderHandlerWin {
+ public:
+  OsrRenderHandlerWin(const OsrRendererSettings& settings, HWND hwnd);
+  virtual ~OsrRenderHandlerWin();
+
+  void SetBrowser(CefRefPtr<CefBrowser> browser);
+
+  // Rotate the texture based on mouse events.
+  virtual void SetSpin(float spinX, float spinY) = 0;
+  virtual void IncrementSpin(float spinDX, float spinDY) = 0;
+
+  // Popup hit testing.
+  virtual bool IsOverPopupWidget(int x, int y) const = 0;
+  virtual int GetPopupXOffset() const = 0;
+  virtual int GetPopupYOffset() const = 0;
+
+  // CefRenderHandler callbacks.
+  virtual void OnPopupShow(CefRefPtr<CefBrowser> browser, bool show) = 0;
+  // |rect| must be in pixel coordinates.
+  virtual void OnPopupSize(CefRefPtr<CefBrowser> browser,
+                           const CefRect& rect) = 0;
+
+  // Used when not rendering with shared textures.
+  virtual void OnPaint(CefRefPtr<CefBrowser> browser,
+                       CefRenderHandler::PaintElementType type,
+                       const CefRenderHandler::RectList& dirtyRects,
+                       const void* buffer,
+                       int width,
+                       int height) = 0;
+
+  // Used when rendering with shared textures.
+  virtual void OnAcceleratedPaint(CefRefPtr<CefBrowser> browser,
+                                  CefRenderHandler::PaintElementType type,
+                                  const CefRenderHandler::RectList& dirtyRects,
+                                  void* share_handle) = 0;
+
+  bool send_begin_frame() const {
+    return settings_.external_begin_frame_enabled;
+  }
+  HWND hwnd() const { return hwnd_; }
+
+ protected:
+  // Called to trigger the BeginFrame timer.
+  void Invalidate();
+
+  // Called by the BeginFrame timer.
+  virtual void Render() = 0;
+
+ private:
+  void TriggerBeginFrame(uint64_t last_time_us, float delay_us);
+
+  // The below members are only accessed on the UI thread.
+  const OsrRendererSettings settings_;
+  const HWND hwnd_;
+  bool begin_frame_pending_;
+  CefRefPtr<CefBrowser> browser_;
+
+  // Must be the last member.
+  base::WeakPtrFactory<OsrRenderHandlerWin> weak_factory_;
+
+  DISALLOW_COPY_AND_ASSIGN(OsrRenderHandlerWin);
+};

src/CEF/OsrRenderHandlerWinD3D11.cpp

@@ -0,0 +1,213 @@
+// Copyright 2018 The Chromium Embedded Framework Authors. All rights
+// reserved. Use of this source code is governed by a BSD-style license that
+// can be found in the LICENSE file.
+
+#include "CEF/OsrRenderHandlerWinD3D11.h"
+
+#include "include/base/cef_callback.h"
+#include "include/wrapper/cef_closure_task.h"
+#include "include/wrapper/cef_helpers.h"
+#include "CEF/UtilWin.h"
+
+BrowserLayer::BrowserLayer(const std::shared_ptr<d3d11::Device>& device)
+    : Layer(device, true /* flip */) {
+  frame_buffer_ = std::make_shared<d3d11::FrameBuffer>(device_);
+}
+
+void BrowserLayer::render(const std::shared_ptr<d3d11::Context>& ctx) {
+  // Use the base class method to draw our texture.
+  render_texture(ctx, frame_buffer_->texture());
+}
+
+void BrowserLayer::on_paint(void* share_handle) {
+  frame_buffer_->on_paint(share_handle);
+}
+
+std::pair<uint32_t, uint32_t> BrowserLayer::texture_size() const {
+  const auto texture = frame_buffer_->texture();
+  return std::make_pair(texture->width(), texture->height());
+}
+
+PopupLayer::PopupLayer(const std::shared_ptr<d3d11::Device>& device)
+    : BrowserLayer(device) {}
+
+void PopupLayer::set_bounds(const CefRect& bounds) {
+  const auto comp = composition();
+  if (!comp)
+    return;
+
+  const auto outer_width = comp->width();
+  const auto outer_height = comp->height();
+  if (outer_width == 0 || outer_height == 0)
+    return;
+
+  original_bounds_ = bounds;
+  bounds_ = bounds;
+
+  // If x or y are negative, move them to 0.
+  if (bounds_.x < 0)
+    bounds_.x = 0;
+  if (bounds_.y < 0)
+    bounds_.y = 0;
+  // If popup goes outside the view, try to reposition origin
+  if (bounds_.x + bounds_.width > outer_width)
+    bounds_.x = outer_width - bounds_.width;
+  if (bounds_.y + bounds_.height > outer_height)
+    bounds_.y = outer_height - bounds_.height;
+  // If x or y became negative, move them to 0 again.
+  if (bounds_.x < 0)
+    bounds_.x = 0;
+  if (bounds_.y < 0)
+    bounds_.y = 0;
+
+  const auto x = bounds_.x / float(outer_width);
+  const auto y = bounds_.y / float(outer_height);
+  const auto w = bounds_.width / float(outer_width);
+  const auto h = bounds_.height / float(outer_height);
+  move(x, y, w, h);
+}
+
+OsrRenderHandlerWinD3D11::OsrRenderHandlerWinD3D11(
+    const OsrRendererSettings& settings,
+    HWND hwnd)
+    : OsrRenderHandlerWin(settings, hwnd), start_time_(0) {}
+
+bool OsrRenderHandlerWinD3D11::Initialize(CefRefPtr<CefBrowser> browser,
+                                          int width,
+                                          int height) {
+  CEF_REQUIRE_UI_THREAD();
+
+  // Create a D3D11 device instance.
+  device_ = d3d11::Device::create();
+  DCHECK(device_);
+  if (!device_)
+    return false;
+
+  // Create a D3D11 swapchain for the window.
+  swap_chain_ = device_->create_swapchain(hwnd());
+  DCHECK(swap_chain_);
+  if (!swap_chain_)
+    return false;
+
+  // Create the browser layer.
+  browser_layer_ = std::make_shared<BrowserLayer>(device_);
+
+  // Set up the composition.
+  composition_ = std::make_shared<d3d11::Composition>(device_, width, height);
+  composition_->add_layer(browser_layer_);
+
+  // Size to the whole composition.
+  browser_layer_->move(0.0f, 0.0f, 1.0f, 1.0f);
+
+  start_time_ = GetTimeNow();
+
+  SetBrowser(browser);
+  return true;
+}
+
+void OsrRenderHandlerWinD3D11::SetSpin(float spinX, float spinY) {
+  CEF_REQUIRE_UI_THREAD();
+  // Spin support is not implemented.
+}
+
+void OsrRenderHandlerWinD3D11::IncrementSpin(float spinDX, float spinDY) {
+  CEF_REQUIRE_UI_THREAD();
+  // Spin support is not implemented.
+}
+
+bool OsrRenderHandlerWinD3D11::IsOverPopupWidget(int x, int y) const {
+  CEF_REQUIRE_UI_THREAD();
+  return popup_layer_ && popup_layer_->contains(x, y);
+}
+
+int OsrRenderHandlerWinD3D11::GetPopupXOffset() const {
+  CEF_REQUIRE_UI_THREAD();
+  if (popup_layer_)
+    return popup_layer_->xoffset();
+  return 0;
+}
+
+int OsrRenderHandlerWinD3D11::GetPopupYOffset() const {
+  CEF_REQUIRE_UI_THREAD();
+  if (popup_layer_)
+    return popup_layer_->yoffset();
+  return 0;
+}
+
+void OsrRenderHandlerWinD3D11::OnPopupShow(CefRefPtr<CefBrowser> browser,
+                                           bool show) {
+  CEF_REQUIRE_UI_THREAD();
+
+  if (show) {
+    DCHECK(!popup_layer_);
+
+    // Create a new layer.
+    popup_layer_ = std::make_shared<PopupLayer>(device_);
+    composition_->add_layer(popup_layer_);
+  } else {
+    DCHECK(popup_layer_);
+
+    composition_->remove_layer(popup_layer_);
+    popup_layer_ = nullptr;
+
+    Render();
+  }
+}
+
+void OsrRenderHandlerWinD3D11::OnPopupSize(CefRefPtr<CefBrowser> browser,
+                                           const CefRect& rect) {
+  CEF_REQUIRE_UI_THREAD();
+  popup_layer_->set_bounds(rect);
+}
+
+void OsrRenderHandlerWinD3D11::OnPaint(
+    CefRefPtr<CefBrowser> browser,
+    CefRenderHandler::PaintElementType type,
+    const CefRenderHandler::RectList& dirtyRects,
+    const void* buffer,
+    int width,
+    int height) {
+  // Not used with this implementation.
+  NOTREACHED();
+}
+
+void OsrRenderHandlerWinD3D11::OnAcceleratedPaint(
+    CefRefPtr<CefBrowser> browser,
+    CefRenderHandler::PaintElementType type,
+    const CefRenderHandler::RectList& dirtyRects,
+    void* share_handle) {
+  CEF_REQUIRE_UI_THREAD();
+
+  if (type == PET_POPUP) {
+    popup_layer_->on_paint(share_handle);
+  } else {
+    browser_layer_->on_paint(share_handle);
+  }
+
+  Render();
+}
+
+void OsrRenderHandlerWinD3D11::Render() {
+  // Update composition + layers based on time.
+  const auto t = (GetTimeNow() - start_time_) / 1000000.0;
+  composition_->tick(t);
+
+  auto ctx = device_->immedidate_context();
+  swap_chain_->bind(ctx);
+
+  const auto texture_size = browser_layer_->texture_size();
+
+  // Resize the composition and swap chain to match the texture if necessary.
+  composition_->resize(!send_begin_frame(), texture_size.first,
+                       texture_size.second);
+  swap_chain_->resize(texture_size.first, texture_size.second);
+
+  // Clear the render target.
+  swap_chain_->clear(0.0f, 0.0f, 1.0f, 1.0f);
+
+  // Render the scene.
+  composition_->render(ctx);
+
+  // Present to window.
+  swap_chain_->present(send_begin_frame() ? 0 : 1);
+}

src/CEF/OsrRenderHandlerWinD3D11.h

@@ -0,0 +1,83 @@
+// Copyright 2018 The Chromium Embedded Framework Authors. All rights
+// reserved. Use of this source code is governed by a BSD-style license that
+// can be found in the LICENSE file.
+
+
+#pragma once
+
+#include "CEF/OsrD3D11Win.h"
+#include "CEF/OsrRenderHandlerWin.h"
+#include "CEF/OsrRendererSettings.h"
+
+class BrowserLayer : public d3d11::Layer {
+ public:
+  explicit BrowserLayer(const std::shared_ptr<d3d11::Device>& device);
+
+  void render(const std::shared_ptr<d3d11::Context>& ctx) override;
+
+  void on_paint(void* share_handle);
+
+  // After calling on_paint() we can query the texture size.
+  std::pair<uint32_t, uint32_t> texture_size() const;
+
+ private:
+  std::shared_ptr<d3d11::FrameBuffer> frame_buffer_;
+
+  DISALLOW_COPY_AND_ASSIGN(BrowserLayer);
+};
+
+class PopupLayer : public BrowserLayer {
+ public:
+  explicit PopupLayer(const std::shared_ptr<d3d11::Device>& device);
+
+  void set_bounds(const CefRect& bounds);
+
+  bool contains(int x, int y) const { return bounds_.Contains(x, y); }
+  int xoffset() const { return original_bounds_.x - bounds_.x; }
+  int yoffset() const { return original_bounds_.y - bounds_.y; }
+
+ private:
+  CefRect original_bounds_;
+  CefRect bounds_;
+
+  DISALLOW_COPY_AND_ASSIGN(PopupLayer);
+};
+
+class OsrRenderHandlerWinD3D11 : public OsrRenderHandlerWin {
+ public:
+  OsrRenderHandlerWinD3D11(const OsrRendererSettings& settings, HWND hwnd);
+
+  // Must be called immediately after object creation.
+  // May fail if D3D11 cannot be initialized.
+  bool Initialize(CefRefPtr<CefBrowser> browser, int width, int height);
+
+  void SetSpin(float spinX, float spinY) override;
+  void IncrementSpin(float spinDX, float spinDY) override;
+  bool IsOverPopupWidget(int x, int y) const override;
+  int GetPopupXOffset() const override;
+  int GetPopupYOffset() const override;
+  void OnPopupShow(CefRefPtr<CefBrowser> browser, bool show) override;
+  void OnPopupSize(CefRefPtr<CefBrowser> browser, const CefRect& rect) override;
+  void OnPaint(CefRefPtr<CefBrowser> browser,
+               CefRenderHandler::PaintElementType type,
+               const CefRenderHandler::RectList& dirtyRects,
+               const void* buffer,
+               int width,
+               int height) override;
+  void OnAcceleratedPaint(CefRefPtr<CefBrowser> browser,
+                          CefRenderHandler::PaintElementType type,
+                          const CefRenderHandler::RectList& dirtyRects,
+                          void* share_handle) override;
+
+ private:
+  void Render() override;
+
+  uint64_t start_time_;
+  std::shared_ptr<d3d11::Device> device_;
+  std::shared_ptr<d3d11::SwapChain> swap_chain_;
+  std::shared_ptr<d3d11::Composition> composition_;
+  std::shared_ptr<BrowserLayer> browser_layer_;
+  std::shared_ptr<PopupLayer> popup_layer_;
+
+  DISALLOW_COPY_AND_ASSIGN(OsrRenderHandlerWinD3D11);
+};

src/CEF/OsrRenderHandlerWinGL.cpp

@@ -0,0 +1,196 @@
+// Copyright 2018 The Chromium Embedded Framework Authors. All rights
+// reserved. Use of this source code is governed by a BSD-style license that
+// can be found in the LICENSE file.
+
+#include "CEF/OsrRenderHandlerWinGL.h"
+
+#include "include/base/cef_callback.h"
+#include "include/wrapper/cef_closure_task.h"
+#include "include/wrapper/cef_helpers.h"
+#include "CEF/UtilWin.h"
+
+
+// Helper that calls wglMakeCurrent.
+class ScopedGLContext {
+ public:
+  ScopedGLContext(HDC hdc, HGLRC hglrc, bool swap_buffers)
+      : hdc_(hdc), swap_buffers_(swap_buffers) {
+    BOOL result = wglMakeCurrent(hdc, hglrc);
+    ALLOW_UNUSED_LOCAL(result);
+    DCHECK(result);
+  }
+  ~ScopedGLContext() {
+    BOOL result = wglMakeCurrent(nullptr, nullptr);
+    DCHECK(result);
+    if (swap_buffers_) {
+      result = SwapBuffers(hdc_);
+      DCHECK(result);
+    }
+  }
+
+ private:
+  const HDC hdc_;
+  const bool swap_buffers_;
+};
+
+
+OsrRenderHandlerWinGL::OsrRenderHandlerWinGL(
+    const OsrRendererSettings& settings,
+    HWND hwnd)
+    : OsrRenderHandlerWin(settings, hwnd),
+      renderer_(settings),
+      hdc_(nullptr),
+      hrc_(nullptr),
+      painting_popup_(false) {}
+
+void OsrRenderHandlerWinGL::Initialize(CefRefPtr<CefBrowser> browser) {
+  CEF_REQUIRE_UI_THREAD();
+  SetBrowser(browser);
+}
+
+OsrRenderHandlerWinGL::~OsrRenderHandlerWinGL() {
+  CEF_REQUIRE_UI_THREAD();
+  DisableGL();
+}
+
+void OsrRenderHandlerWinGL::SetSpin(float spinX, float spinY) {
+  CEF_REQUIRE_UI_THREAD();
+  renderer_.SetSpin(spinX, spinY);
+  Invalidate();
+}
+
+void OsrRenderHandlerWinGL::IncrementSpin(float spinDX, float spinDY) {
+  CEF_REQUIRE_UI_THREAD();
+  renderer_.IncrementSpin(spinDX, spinDY);
+  Invalidate();
+}
+
+bool OsrRenderHandlerWinGL::IsOverPopupWidget(int x, int y) const {
+  CEF_REQUIRE_UI_THREAD();
+  const CefRect& rc = renderer_.popup_rect();
+  int popup_right = rc.x + rc.width;
+  int popup_bottom = rc.y + rc.height;
+  return (x >= rc.x) && (x < popup_right) && (y >= rc.y) && (y < popup_bottom);
+}
+
+int OsrRenderHandlerWinGL::GetPopupXOffset() const {
+  CEF_REQUIRE_UI_THREAD();
+  return renderer_.original_popup_rect().x - renderer_.popup_rect().x;
+}
+
+int OsrRenderHandlerWinGL::GetPopupYOffset() const {
+  CEF_REQUIRE_UI_THREAD();
+  return renderer_.original_popup_rect().y - renderer_.popup_rect().y;
+}
+
+void OsrRenderHandlerWinGL::OnPopupShow(CefRefPtr<CefBrowser> browser,
+                                        bool show) {
+  CEF_REQUIRE_UI_THREAD();
+
+  if (!show) {
+    renderer_.ClearPopupRects();
+    browser->GetHost()->Invalidate(PET_VIEW);
+  }
+
+  renderer_.OnPopupShow(browser, show);
+}
+
+void OsrRenderHandlerWinGL::OnPopupSize(CefRefPtr<CefBrowser> browser,
+                                        const CefRect& rect) {
+  CEF_REQUIRE_UI_THREAD();
+  renderer_.OnPopupSize(browser, rect);
+}
+
+void OsrRenderHandlerWinGL::OnPaint(
+    CefRefPtr<CefBrowser> browser,
+    CefRenderHandler::PaintElementType type,
+    const CefRenderHandler::RectList& dirtyRects,
+    const void* buffer,
+    int width,
+    int height) {
+  CEF_REQUIRE_UI_THREAD();
+
+  if (painting_popup_) {
+    renderer_.OnPaint(browser, type, dirtyRects, buffer, width, height);
+    return;
+  }
+  if (!hdc_) {
+    EnableGL();
+  }
+
+  ScopedGLContext scoped_gl_context(hdc_, hrc_, true);
+  renderer_.OnPaint(browser, type, dirtyRects, buffer, width, height);
+  if (type == PET_VIEW && !renderer_.popup_rect().IsEmpty()) {
+    painting_popup_ = true;
+    browser->GetHost()->Invalidate(PET_POPUP);
+    painting_popup_ = false;
+  }
+  renderer_.Render();
+}
+
+void OsrRenderHandlerWinGL::OnAcceleratedPaint(
+    CefRefPtr<CefBrowser> browser,
+    CefRenderHandler::PaintElementType type,
+    const CefRenderHandler::RectList& dirtyRects,
+    void* share_handle) {
+  // Not used with this implementation.
+  NOTREACHED();
+}
+
+void OsrRenderHandlerWinGL::Render() {
+  if (!hdc_) {
+    EnableGL();
+  }
+
+  ScopedGLContext scoped_gl_context(hdc_, hrc_, true);
+  renderer_.Render();
+}
+
+void OsrRenderHandlerWinGL::EnableGL() {
+  PIXELFORMATDESCRIPTOR pfd;
+  int format;
+
+  // Get the device context.
+  hdc_ = GetDC(hwnd());
+
+  // Set the pixel format for the DC.
+  ZeroMemory(&pfd, sizeof(pfd));
+  pfd.nSize = sizeof(pfd);
+  pfd.nVersion = 1;
+  pfd.dwFlags = PFD_DRAW_TO_WINDOW | PFD_SUPPORT_OPENGL | PFD_DOUBLEBUFFER;
+  pfd.iPixelType = PFD_TYPE_RGBA;
+  pfd.cColorBits = 24;
+  pfd.cDepthBits = 16;
+  pfd.iLayerType = PFD_MAIN_PLANE;
+  format = ChoosePixelFormat(hdc_, &pfd);
+  SetPixelFormat(hdc_, format, &pfd);
+
+  // Create and enable the render context.
+  hrc_ = wglCreateContext(hdc_);
+
+  ScopedGLContext scoped_gl_context(hdc_, hrc_, false);
+  renderer_.Initialize();
+}
+
+void OsrRenderHandlerWinGL::DisableGL() {
+  if (!hdc_) {
+    return;
+  }
+
+  {
+    ScopedGLContext scoped_gl_context(hdc_, hrc_, false);
+    renderer_.Cleanup();
+  }
+
+  if (IsWindow(hwnd())) {
+    // wglDeleteContext will make the context not current before deleting it.
+    BOOL result = wglDeleteContext(hrc_);
+    ALLOW_UNUSED_LOCAL(result);
+    DCHECK(result);
+    ReleaseDC(hwnd(), hdc_);
+  }
+
+  hdc_ = nullptr;
+  hrc_ = nullptr;
+}
+

src/CEF/OsrRenderHandlerWinGL.h

@@ -0,0 +1,49 @@
+// Copyright 2018 The Chromium Embedded Framework Authors. All rights
+// reserved. Use of this source code is governed by a BSD-style license that
+// can be found in the LICENSE file.
+
+#pragma once
+
+#include "CEF/OsrRenderHandlerWin.h"
+#include "CEF/OsrRenderer.h"
+
+class OsrRenderHandlerWinGL : public OsrRenderHandlerWin {
+ public:
+  OsrRenderHandlerWinGL(const OsrRendererSettings& settings, HWND hwnd);
+  virtual ~OsrRenderHandlerWinGL();
+
+  // Must be called immediately after object creation.
+  void Initialize(CefRefPtr<CefBrowser> browser);
+
+  void SetSpin(float spinX, float spinY) override;
+  void IncrementSpin(float spinDX, float spinDY) override;
+  bool IsOverPopupWidget(int x, int y) const override;
+  int GetPopupXOffset() const override;
+  int GetPopupYOffset() const override;
+  void OnPopupShow(CefRefPtr<CefBrowser> browser, bool show) override;
+  void OnPopupSize(CefRefPtr<CefBrowser> browser, const CefRect& rect) override;
+  void OnPaint(CefRefPtr<CefBrowser> browser,
+               CefRenderHandler::PaintElementType type,
+               const CefRenderHandler::RectList& dirtyRects,
+               const void* buffer,
+               int width,
+               int height) override;
+  void OnAcceleratedPaint(CefRefPtr<CefBrowser> browser,
+                          CefRenderHandler::PaintElementType type,
+                          const CefRenderHandler::RectList& dirtyRects,
+                          void* share_handle) override;
+
+ private:
+  void Render() override;
+
+  void EnableGL();
+  void DisableGL();
+
+  // The below members are only accessed on the UI thread.
+  OsrRenderer renderer_;
+  HDC hdc_;
+  HGLRC hrc_;
+  bool painting_popup_;
+
+  DISALLOW_COPY_AND_ASSIGN(OsrRenderHandlerWinGL);
+};

src/CEF/OsrRenderHandlerWinNative.cpp

@@ -0,0 +1,182 @@
+// Copyright 2018 The Chromium Embedded Framework Authors. All rights
+// reserved. Use of this source code is governed by a BSD-style license that
+// can be found in the LICENSE file.
+
+#include "CEF/OsrRenderHandlerWinNative.h"
+
+#include "include/base/cef_callback.h"
+#include "include/wrapper/cef_closure_task.h"
+#include "include/wrapper/cef_helpers.h"
+#include "CEF/UtilWin.h"
+
+#include "stb/stb_image_write.h"
+
+OsrRenderHandlerWinNative::OsrRenderHandlerWinNative(
+    const OsrRendererSettings& settings,
+    HWND hwnd)
+    : OsrRenderHandlerWin(settings, hwnd),
+      hdc_(nullptr),
+      hrc_(nullptr),
+      painting_popup_(false),
+      view_width_(0),
+      view_height_(0),
+      spin_x_(0),
+      spin_y_(0) {}
+
+void OsrRenderHandlerWinNative::Initialize(CefRefPtr<CefBrowser> browser) {
+  CEF_REQUIRE_UI_THREAD();
+  SetBrowser(browser);
+}
+
+OsrRenderHandlerWinNative::~OsrRenderHandlerWinNative() {
+  CEF_REQUIRE_UI_THREAD();
+}
+
+void OsrRenderHandlerWinNative::SetSpin(float spinX, float spinY) {
+  CEF_REQUIRE_UI_THREAD();
+  spin_x_ = spinX;
+  spin_y_ = spinY;
+  Invalidate();
+}
+
+void OsrRenderHandlerWinNative::IncrementSpin(float spinDX, float spinDY) {
+  CEF_REQUIRE_UI_THREAD();
+  spin_x_ -= spinDX;
+  spin_y_ -= spinDY;
+  Invalidate();
+}
+
+bool OsrRenderHandlerWinNative::IsOverPopupWidget(int x, int y) const {
+  CEF_REQUIRE_UI_THREAD();
+  const CefRect& rc = popup_rect_;
+  int popup_right = rc.x + rc.width;
+  int popup_bottom = rc.y + rc.height;
+  return (x >= rc.x) && (x < popup_right) && (y >= rc.y) && (y < popup_bottom);
+}
+
+int OsrRenderHandlerWinNative::GetPopupXOffset() const {
+  CEF_REQUIRE_UI_THREAD();
+  return original_popup_rect_.x - popup_rect_.x;
+}
+
+int OsrRenderHandlerWinNative::GetPopupYOffset() const {
+  CEF_REQUIRE_UI_THREAD();
+  return original_popup_rect_.y - popup_rect_.y;
+}
+
+void OsrRenderHandlerWinNative::OnPopupShow(CefRefPtr<CefBrowser> browser,
+                                        bool show) {
+  CEF_REQUIRE_UI_THREAD();
+
+  if (!show) {
+    popup_rect_.Set(0, 0, 0, 0);
+    original_popup_rect_.Set(0, 0, 0, 0);
+    browser->GetHost()->Invalidate(PET_VIEW);
+  }
+}
+
+void OsrRenderHandlerWinNative::OnPopupSize(CefRefPtr<CefBrowser> browser,
+                                        const CefRect& rect) {
+  CEF_REQUIRE_UI_THREAD();
+  if (rect.width <= 0 || rect.height <= 0)
+      return;
+  original_popup_rect_ = rect;
+  popup_rect_ = GetPopupRectInWebView(original_popup_rect_);
+}
+
+void OsrRenderHandlerWinNative::OnPaint(
+    CefRefPtr<CefBrowser> browser,
+    CefRenderHandler::PaintElementType type,
+    const CefRenderHandler::RectList& dirtyRects,
+    const void* buffer,
+    int width,
+    int height) {
+  CEF_REQUIRE_UI_THREAD()
+    // stbi_write_png("d:/3.png", width, height, 4, buffer, width * 4);
+    
+  HDC hDc = GetDC(hwnd());
+  HDC hMemDC = CreateCompatibleDC(hDc);
+  RECT rct;
+  GetClientRect(hwnd(), &rct);
+  BITMAPINFO bmi = { 0 };
+  bmi.bmiHeader.biSize = sizeof(bmi.bmiHeader);
+  bmi.bmiHeader.biWidth = width;
+  bmi.bmiHeader.biHeight = height;
+  bmi.bmiHeader.biPlanes = 1;
+  bmi.bmiHeader.biBitCount = 32;
+  bmi.bmiHeader.biCompression = BI_RGB;
+  bmi.bmiHeader.biSizeImage = 0;
+
+  DWORD *pvBits = nullptr;
+  HBITMAP hBitmap = CreateDIBSection(hDc, &bmi, DIB_RGB_COLORS, reinterpret_cast<void**>(&pvBits), NULL, 0);
+  const int iTotal = width * height * 4;
+  for (int i = 0; i != height; ++i)
+  {
+      for (int j = 0; j != width; ++j)
+      {
+          pvBits[i * width + j] = reinterpret_cast<const DWORD*>(buffer)[(height - i - 1) * width + j];          
+          byte *pByte = (byte*)&pvBits[i * width + j];
+          pByte[0] = pByte[0] * pByte[3] / 255;
+          pByte[1] = pByte[1] * pByte[3] / 255;
+          pByte[2] = pByte[2] * pByte[3] / 255;
+      }
+  }
+
+  GdiFlush();
+  SelectObject(hMemDC, hBitmap);
+
+  POINT ptSrc;
+  ptSrc.x = 0;
+  ptSrc.y = 0;
+  POINT ptDst = ptSrc;
+  ClientToScreen(hwnd(), &ptDst);
+  SIZE szSrc;
+  szSrc.cx = width;
+  szSrc.cy = height;
+  BLENDFUNCTION bf;
+  bf.BlendOp = AC_SRC_OVER;
+  bf.BlendFlags = 0;
+  bf.SourceConstantAlpha = 255;
+  bf.AlphaFormat = AC_SRC_ALPHA;
+  PAINTSTRUCT ps;
+  BeginPaint(hwnd(), &ps);
+  EndPaint(hwnd(), &ps);
+  UpdateLayeredWindow(hwnd(), hDc, &ptDst, &szSrc, hMemDC,
+      &ptSrc, 0, &bf, ULW_ALPHA);
+  DeleteDC(hMemDC);
+  DeleteObject(hBitmap);
+  ReleaseDC(hwnd(), hDc);
+}
+
+void OsrRenderHandlerWinNative::OnAcceleratedPaint(
+    CefRefPtr<CefBrowser> browser,
+    CefRenderHandler::PaintElementType type,
+    const CefRenderHandler::RectList& dirtyRects,
+    void* share_handle) {
+  // Not used with this implementation.
+  NOTREACHED();
+}
+
+void OsrRenderHandlerWinNative::Render() {
+
+}
+
+CefRect OsrRenderHandlerWinNative::GetPopupRectInWebView(const CefRect& original_rect) {
+    CefRect rc(original_rect);
+    // if x or y are negative, move them to 0.
+    if (rc.x < 0)
+        rc.x = 0;
+    if (rc.y < 0)
+        rc.y = 0;
+    // if popup goes outside the view, try to reposition origin
+    if (rc.x + rc.width > view_width_)
+        rc.x = view_width_ - rc.width;
+    if (rc.y + rc.height > view_height_)
+        rc.y = view_height_ - rc.height;
+    // if x or y became negative, move them to 0 again.
+    if (rc.x < 0)
+        rc.x = 0;
+    if (rc.y < 0)
+        rc.y = 0;
+    return rc;
+}

src/CEF/OsrRenderHandlerWinNative.h

@@ -0,0 +1,55 @@
+// Copyright 2018 The Chromium Embedded Framework Authors. All rights
+// reserved. Use of this source code is governed by a BSD-style license that
+// can be found in the LICENSE file.
+
+#pragma once
+
+#include "CEF/OsrRenderHandlerWin.h"
+
+class OsrRenderHandlerWinNative : public OsrRenderHandlerWin {
+ public:
+  OsrRenderHandlerWinNative(const OsrRendererSettings& settings, HWND hwnd);
+  virtual ~OsrRenderHandlerWinNative();
+
+  // Must be called immediately after object creation.
+  void Initialize(CefRefPtr<CefBrowser> browser);
+
+  void SetSpin(float spinX, float spinY) override;
+  void IncrementSpin(float spinDX, float spinDY) override;
+  bool IsOverPopupWidget(int x, int y) const override;
+  int GetPopupXOffset() const override;
+  int GetPopupYOffset() const override;
+  void OnPopupShow(CefRefPtr<CefBrowser> browser, bool show) override;
+  void OnPopupSize(CefRefPtr<CefBrowser> browser, const CefRect& rect) override;
+  void OnPaint(CefRefPtr<CefBrowser> browser,
+               CefRenderHandler::PaintElementType type,
+               const CefRenderHandler::RectList& dirtyRects,
+               const void* buffer,
+               int width,
+               int height) override;
+  void OnAcceleratedPaint(CefRefPtr<CefBrowser> browser,
+                          CefRenderHandler::PaintElementType type,
+                          const CefRenderHandler::RectList& dirtyRects,
+                          void* share_handle) override;
+
+ private:
+  void Render() override;
+
+  CefRect GetPopupRectInWebView(const CefRect& original_rect);
+
+  // The below members are only accessed on the UI thread.
+
+  HDC hdc_;
+  HGLRC hrc_;
+  bool painting_popup_;
+
+  int view_width_;
+  int view_height_;
+  CefRect popup_rect_;
+  CefRect original_popup_rect_;
+  float spin_x_;
+  float spin_y_;
+  CefRect update_rect_;
+
+  DISALLOW_COPY_AND_ASSIGN(OsrRenderHandlerWinNative);
+};

src/CEF/OsrRenderer.cpp

@@ -0,0 +1,394 @@
+// Copyright (c) 2012 The Chromium Embedded Framework Authors. All rights
+// reserved. Use of this source code is governed by a BSD-style license
+// that can be found in the LICENSE file.
+
+#include "CEF/OsrRenderer.h"
+
+#if defined(OS_WIN)
+#include <gl/gl.h>
+#elif defined(OS_MAC)
+#include <OpenGL/gl.h>
+#elif defined(OS_LINUX)
+#include <GL/gl.h>
+#else
+#error Platform is not supported.
+#endif
+
+#include "include/base/cef_logging.h"
+#include "include/wrapper/cef_helpers.h"
+
+#ifndef GL_BGR
+#define GL_BGR 0x80E0
+#endif
+#ifndef GL_BGRA
+#define GL_BGRA 0x80E1
+#endif
+#ifndef GL_UNSIGNED_INT_8_8_8_8_REV
+#define GL_UNSIGNED_INT_8_8_8_8_REV 0x8367
+#endif
+
+// DCHECK on gl errors.
+#if DCHECK_IS_ON()
+#define VERIFY_NO_ERROR                                                      \
+  {                                                                          \
+    int _gl_error = glGetError();                                            \
+    DCHECK(_gl_error == GL_NO_ERROR) << "glGetError returned " << _gl_error; \
+  }
+#else
+#define VERIFY_NO_ERROR
+#endif
+
+OsrRenderer::OsrRenderer(const OsrRendererSettings& settings)
+    : settings_(settings),
+      initialized_(false),
+      texture_id_(0),
+      view_width_(0),
+      view_height_(0),
+      spin_x_(0),
+      spin_y_(0) {}
+
+OsrRenderer::~OsrRenderer() {
+  Cleanup();
+}
+
+void OsrRenderer::Initialize() {
+  if (initialized_)
+    return;
+
+  glHint(GL_POLYGON_SMOOTH_HINT, GL_NICEST);
+  VERIFY_NO_ERROR;
+
+  if (IsTransparent()) {
+    glClearColor(0.0f, 0.0f, 0.0f, 0.0f);
+    VERIFY_NO_ERROR;
+  } else {
+    glClearColor(float(CefColorGetR(settings_.background_color)) / 255.0f,
+                 float(CefColorGetG(settings_.background_color)) / 255.0f,
+                 float(CefColorGetB(settings_.background_color)) / 255.0f,
+                 1.0f);
+    VERIFY_NO_ERROR;
+  }
+
+  // Necessary for non-power-of-2 textures to render correctly.
+  glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
+  VERIFY_NO_ERROR;
+
+  // Create the texture.
+  glGenTextures(1, &texture_id_);
+  VERIFY_NO_ERROR;
+  DCHECK_NE(texture_id_, 0U);
+  VERIFY_NO_ERROR;
+
+  glBindTexture(GL_TEXTURE_2D, texture_id_);
+  VERIFY_NO_ERROR;
+  glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
+  VERIFY_NO_ERROR;
+  glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
+  VERIFY_NO_ERROR;
+  glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE);
+  VERIFY_NO_ERROR;
+
+  initialized_ = true;
+}
+
+void OsrRenderer::Cleanup() {
+  if (texture_id_ != 0)
+    glDeleteTextures(1, &texture_id_);
+}
+
+void OsrRenderer::Render() {
+  if (view_width_ == 0 || view_height_ == 0)
+    return;
+
+  DCHECK(initialized_);
+
+  struct {
+    float tu, tv;
+    float x, y, z;
+  } static vertices[] = {{0.0f, 1.0f, -1.0f, -1.0f, 0.0f},
+                         {1.0f, 1.0f, 1.0f, -1.0f, 0.0f},
+                         {1.0f, 0.0f, 1.0f, 1.0f, 0.0f},
+                         {0.0f, 0.0f, -1.0f, 1.0f, 0.0f}};
+
+  glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
+  VERIFY_NO_ERROR;
+
+  glMatrixMode(GL_MODELVIEW);
+  VERIFY_NO_ERROR;
+  glLoadIdentity();
+  VERIFY_NO_ERROR;
+
+  // Match GL units to screen coordinates.
+  glViewport(0, 0, view_width_, view_height_);
+  VERIFY_NO_ERROR;
+  glMatrixMode(GL_PROJECTION);
+  VERIFY_NO_ERROR;
+  glLoadIdentity();
+  VERIFY_NO_ERROR;
+
+  // Draw the background gradient.
+  glPushAttrib(GL_ALL_ATTRIB_BITS);
+  VERIFY_NO_ERROR;
+  // Don't check for errors until glEnd().
+  glBegin(GL_QUADS);
+  glColor4f(1.0, 0.0, 0.0, 1.0);  // red
+  glVertex2f(-1.0, -1.0);
+  glVertex2f(1.0, -1.0);
+  glColor4f(0.0, 0.0, 1.0, 1.0);  // blue
+  glVertex2f(1.0, 1.0);
+  glVertex2f(-1.0, 1.0);
+  glEnd();
+  VERIFY_NO_ERROR;
+  glPopAttrib();
+  VERIFY_NO_ERROR;
+
+  // Rotate the view based on the mouse spin.
+  if (spin_x_ != 0) {
+    glRotatef(-spin_x_, 1.0f, 0.0f, 0.0f);
+    VERIFY_NO_ERROR;
+  }
+  if (spin_y_ != 0) {
+    glRotatef(-spin_y_, 0.0f, 1.0f, 0.0f);
+    VERIFY_NO_ERROR;
+  }
+
+  if (IsTransparent()) {
+    // Alpha blending style. Texture values have premultiplied alpha.
+    glBlendFunc(GL_ONE, GL_ONE_MINUS_SRC_ALPHA);
+    VERIFY_NO_ERROR;
+
+    // Enable alpha blending.
+    glEnable(GL_BLEND);
+    VERIFY_NO_ERROR;
+  }
+
+  // Enable 2D textures.
+  glEnable(GL_TEXTURE_2D);
+  VERIFY_NO_ERROR;
+
+  // Draw the facets with the texture.
+  DCHECK_NE(texture_id_, 0U);
+  VERIFY_NO_ERROR;
+  glBindTexture(GL_TEXTURE_2D, texture_id_);
+  VERIFY_NO_ERROR;
+  glInterleavedArrays(GL_T2F_V3F, 0, vertices);
+  VERIFY_NO_ERROR;
+  glDrawArrays(GL_QUADS, 0, 4);
+  VERIFY_NO_ERROR;
+
+  // Disable 2D textures.
+  glDisable(GL_TEXTURE_2D);
+  VERIFY_NO_ERROR;
+
+  if (IsTransparent()) {
+    // Disable alpha blending.
+    glDisable(GL_BLEND);
+    VERIFY_NO_ERROR;
+  }
+
+  // Draw a rectangle around the update region.
+  if (settings_.show_update_rect && !update_rect_.IsEmpty()) {
+    int left = update_rect_.x;
+    int right = update_rect_.x + update_rect_.width;
+    int top = update_rect_.y;
+    int bottom = update_rect_.y + update_rect_.height;
+
+#if defined(OS_LINUX)
+    // Shrink the box so that top & right sides are drawn.
+    top += 1;
+    right -= 1;
+#else
+    // Shrink the box so that left & bottom sides are drawn.
+    left += 1;
+    bottom -= 1;
+#endif
+
+    glPushAttrib(GL_ALL_ATTRIB_BITS);
+    VERIFY_NO_ERROR
+    glMatrixMode(GL_PROJECTION);
+    VERIFY_NO_ERROR;
+    glPushMatrix();
+    VERIFY_NO_ERROR;
+    glLoadIdentity();
+    VERIFY_NO_ERROR;
+    glOrtho(0, view_width_, view_height_, 0, 0, 1);
+    VERIFY_NO_ERROR;
+
+    glLineWidth(1);
+    VERIFY_NO_ERROR;
+    glColor3f(1.0f, 0.0f, 0.0f);
+    VERIFY_NO_ERROR;
+    // Don't check for errors until glEnd().
+    glBegin(GL_LINE_STRIP);
+    glVertex2i(left, top);
+    glVertex2i(right, top);
+    glVertex2i(right, bottom);
+    glVertex2i(left, bottom);
+    glVertex2i(left, top);
+    glEnd();
+    VERIFY_NO_ERROR;
+
+    glPopMatrix();
+    VERIFY_NO_ERROR;
+    glPopAttrib();
+    VERIFY_NO_ERROR;
+  }
+}
+
+void OsrRenderer::OnPopupShow(CefRefPtr<CefBrowser> browser, bool show) {
+  if (!show) {
+    // Clear the popup rectangle.
+    ClearPopupRects();
+  }
+}
+
+void OsrRenderer::OnPopupSize(CefRefPtr<CefBrowser> browser,
+                              const CefRect& rect) {
+  if (rect.width <= 0 || rect.height <= 0)
+    return;
+  original_popup_rect_ = rect;
+  popup_rect_ = GetPopupRectInWebView(original_popup_rect_);
+}
+
+CefRect OsrRenderer::GetPopupRectInWebView(const CefRect& original_rect) {
+  CefRect rc(original_rect);
+  // if x or y are negative, move them to 0.
+  if (rc.x < 0)
+    rc.x = 0;
+  if (rc.y < 0)
+    rc.y = 0;
+  // if popup goes outside the view, try to reposition origin
+  if (rc.x + rc.width > view_width_)
+    rc.x = view_width_ - rc.width;
+  if (rc.y + rc.height > view_height_)
+    rc.y = view_height_ - rc.height;
+  // if x or y became negative, move them to 0 again.
+  if (rc.x < 0)
+    rc.x = 0;
+  if (rc.y < 0)
+    rc.y = 0;
+  return rc;
+}
+
+void OsrRenderer::ClearPopupRects() {
+  popup_rect_.Set(0, 0, 0, 0);
+  original_popup_rect_.Set(0, 0, 0, 0);
+}
+
+void OsrRenderer::OnPaint(CefRefPtr<CefBrowser> browser,
+                          CefRenderHandler::PaintElementType type,
+                          const CefRenderHandler::RectList& dirtyRects,
+                          const void* buffer,
+                          int width,
+                          int height) {
+  if (!initialized_)
+    Initialize();
+
+  if (IsTransparent()) {
+    // Enable alpha blending.
+    glEnable(GL_BLEND);
+    VERIFY_NO_ERROR;
+  }
+
+  // Enable 2D textures.
+  glEnable(GL_TEXTURE_2D);
+  VERIFY_NO_ERROR;
+
+  DCHECK_NE(texture_id_, 0U);
+  glBindTexture(GL_TEXTURE_2D, texture_id_);
+  VERIFY_NO_ERROR;
+
+  if (type == PET_VIEW) {
+    int old_width = view_width_;
+    int old_height = view_height_;
+
+    view_width_ = width;
+    view_height_ = height;
+
+    if (settings_.show_update_rect)
+      update_rect_ = dirtyRects[0];
+
+    glPixelStorei(GL_UNPACK_ROW_LENGTH, view_width_);
+    VERIFY_NO_ERROR;
+
+    if (old_width != view_width_ || old_height != view_height_ ||
+        (dirtyRects.size() == 1 &&
+         dirtyRects[0] == CefRect(0, 0, view_width_, view_height_))) {
+      // Update/resize the whole texture.
+      glPixelStorei(GL_UNPACK_SKIP_PIXELS, 0);
+      VERIFY_NO_ERROR;
+      glPixelStorei(GL_UNPACK_SKIP_ROWS, 0);
+      VERIFY_NO_ERROR;
+      glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, view_width_, view_height_, 0,
+                   GL_BGRA, GL_UNSIGNED_INT_8_8_8_8_REV, buffer);
+      VERIFY_NO_ERROR;
+    } else {
+      // Update just the dirty rectangles.
+      CefRenderHandler::RectList::const_iterator i = dirtyRects.begin();
+      for (; i != dirtyRects.end(); ++i) {
+        const CefRect& rect = *i;
+        DCHECK(rect.x + rect.width <= view_width_);
+        DCHECK(rect.y + rect.height <= view_height_);
+        glPixelStorei(GL_UNPACK_SKIP_PIXELS, rect.x);
+        VERIFY_NO_ERROR;
+        glPixelStorei(GL_UNPACK_SKIP_ROWS, rect.y);
+        VERIFY_NO_ERROR;
+        glTexSubImage2D(GL_TEXTURE_2D, 0, rect.x, rect.y, rect.width,
+                        rect.height, GL_BGRA, GL_UNSIGNED_INT_8_8_8_8_REV,
+                        buffer);
+        VERIFY_NO_ERROR;
+      }
+    }
+  } else if (type == PET_POPUP && popup_rect_.width > 0 &&
+             popup_rect_.height > 0) {
+    int skip_pixels = 0, x = popup_rect_.x;
+    int skip_rows = 0, y = popup_rect_.y;
+    int w = width;
+    int h = height;
+
+    // Adjust the popup to fit inside the view.
+    if (x < 0) {
+      skip_pixels = -x;
+      x = 0;
+    }
+    if (y < 0) {
+      skip_rows = -y;
+      y = 0;
+    }
+    if (x + w > view_width_)
+      w -= x + w - view_width_;
+    if (y + h > view_height_)
+      h -= y + h - view_height_;
+
+    // Update the popup rectangle.
+    glPixelStorei(GL_UNPACK_ROW_LENGTH, width);
+    VERIFY_NO_ERROR;
+    glPixelStorei(GL_UNPACK_SKIP_PIXELS, skip_pixels);
+    VERIFY_NO_ERROR;
+    glPixelStorei(GL_UNPACK_SKIP_ROWS, skip_rows);
+    VERIFY_NO_ERROR;
+    glTexSubImage2D(GL_TEXTURE_2D, 0, x, y, w, h, GL_BGRA,
+                    GL_UNSIGNED_INT_8_8_8_8_REV, buffer);
+    VERIFY_NO_ERROR;
+  }
+
+  // Disable 2D textures.
+  glDisable(GL_TEXTURE_2D);
+  VERIFY_NO_ERROR;
+
+  if (IsTransparent()) {
+    // Disable alpha blending.
+    glDisable(GL_BLEND);
+    VERIFY_NO_ERROR;
+  }
+}
+
+void OsrRenderer::SetSpin(float spinX, float spinY) {
+  spin_x_ = spinX;
+  spin_y_ = spinY;
+}
+
+void OsrRenderer::IncrementSpin(float spinDX, float spinDY) {
+  spin_x_ -= spinDX;
+  spin_y_ -= spinDY;
+}

src/CEF/OsrRenderer.h

@@ -0,0 +1,67 @@
+// Copyright (c) 2012 The Chromium Embedded Framework Authors. All rights
+// reserved. Use of this source code is governed by a BSD-style license
+// that can be found in the LICENSE file.
+
+#pragma once
+
+#include "include/cef_browser.h"
+#include "include/cef_render_handler.h"
+#include "CEF/OsrRendererSettings.h"
+
+class OsrRenderer {
+ public:
+  explicit OsrRenderer(const OsrRendererSettings& settings);
+  ~OsrRenderer();
+
+  // Initialize the OpenGL environment.
+  void Initialize();
+
+  // Clean up the OpenGL environment.
+  void Cleanup();
+
+  // Render to the screen.
+  void Render();
+
+  // Forwarded from CefRenderHandler callbacks.
+  void OnPopupShow(CefRefPtr<CefBrowser> browser, bool show);
+  // |rect| must be in pixel coordinates.
+  void OnPopupSize(CefRefPtr<CefBrowser> browser, const CefRect& rect);
+  void OnPaint(CefRefPtr<CefBrowser> browser,
+               CefRenderHandler::PaintElementType type,
+               const CefRenderHandler::RectList& dirtyRects,
+               const void* buffer,
+               int width,
+               int height);
+
+  // Apply spin.
+  void SetSpin(float spinX, float spinY);
+  void IncrementSpin(float spinDX, float spinDY);
+
+  int GetViewWidth() const { return view_width_; }
+  int GetViewHeight() const { return view_height_; }
+
+  CefRect popup_rect() const { return popup_rect_; }
+  CefRect original_popup_rect() const { return original_popup_rect_; }
+
+  void ClearPopupRects();
+
+ private:
+  CefRect GetPopupRectInWebView(const CefRect& original_rect);
+
+  inline bool IsTransparent() const {
+    return CefColorGetA(settings_.background_color) == 0;
+  }
+
+  const OsrRendererSettings settings_;
+  bool initialized_;
+  unsigned int texture_id_;
+  int view_width_;
+  int view_height_;
+  CefRect popup_rect_;
+  CefRect original_popup_rect_;
+  float spin_x_;
+  float spin_y_;
+  CefRect update_rect_;
+
+  DISALLOW_COPY_AND_ASSIGN(OsrRenderer);
+};

src/CEF/OsrRendererSettings.h

@@ -4,13 +4,21 @@
 
 #pragma once
 
+#include <fwd.hpp>
+
 #include "include/internal/cef_types.h"
 
 struct OsrRendererSettings {
+  enum class OsrRendererType : unsigned char {
+      Unknown = 0,
+      OpenGL = 1,
+      D3D11 = 2,
+      Navtive = 3
+  };  
   OsrRendererSettings()
       : show_update_rect(false),
         background_color(0),
-        shared_texture_enabled(false),
+        render_type(OsrRendererType::Unknown),
         external_begin_frame_enabled(false),
         begin_frame_rate(0) {}
 
@@ -21,7 +29,8 @@ struct OsrRendererSettings {
   cef_color_t background_color;
 
   // Render using shared textures. Supported on Windows only via D3D11.
-  bool shared_texture_enabled;
+  // bool shared_texture_enabled;
+  OsrRendererType render_type;
 
   // Client implements a BeginFrame timer by calling
   // CefBrowserHost::SendExternalBeginFrame at the specified frame rate.

src/CEF/OsrWindowWin.cpp

@@ -11,12 +11,11 @@
 
 #include "include/base/cef_build.h"
 #include "CEF/HumanAppContext.h"
-#include "CEF/osr_accessibility_helper.h"
+#include "CEF/OsrAccessibilityHelper.h"
-#include "CEF/osr_accessibility_node.h"
+#include "CEF/OsrImeHandlerWin.h"
-#include "CEF/osr_ime_handler_win.h"
+#include "CEF/OsrRenderHandlerWinD3D11.h"
-#include "CEF/osr_render_handler_win_d3d11.h"
+#include "CEF/OsrRenderHandlerWinGL.h"
-#include "CEF/osr_render_handler_win_gl.h"
+#include "CEF/OsrRenderHandlerWinNative.h"
-#include "CEF/osr_render_handler_win_native.h"
 #include "CEF/resource.h"
 #include "CEF/GeometryUtil.h"
 #include "CEF/MainMessageLoop.h"
@@ -127,18 +126,23 @@ void OsrWindowWin::CreateBrowser(HWND parent_hwnd,
     return;
   }
 
+#if 0
   // Create the native window.
   Create(parent_hwnd, rect);
-
+#else
+  client_rect_ = rect;
+  hwnd_ = parent_hwnd;
+  NotifyNativeWindowCreated(hwnd_);
+#endif   
   CefWindowInfo window_info;
   window_info.SetAsWindowless(hwnd_);
-
+  
   if (GetWindowLongPtr(parent_hwnd, GWL_EXSTYLE) & WS_EX_NOACTIVATE) {
     // Don't activate the browser window on creation.
     window_info.ex_style |= WS_EX_NOACTIVATE;
   }
 
-  window_info.shared_texture_enabled = settings_.shared_texture_enabled;
+  window_info.shared_texture_enabled = settings_.render_type == OsrRendererSettings::OsrRendererType::D3D11;
   window_info.external_begin_frame_enabled =
       settings_.external_begin_frame_enabled;
 
@@ -232,7 +236,7 @@ void OsrWindowWin::SetBounds(int x, int y, size_t width, size_t height) {
   if (hwnd_) {
     // Set the browser window bounds.
     ::SetWindowPos(hwnd_, nullptr, x, y, static_cast<int>(width),
-                   static_cast<int>(height), SWP_NOZORDER);
+                   static_cast<int>(height), SWP_NOZORDER );
   }
 }
 
@@ -275,19 +279,19 @@ void OsrWindowWin::Create(HWND parent_hwnd, const RECT& rect) {
 
   HINSTANCE hInst = ::GetModuleHandle(nullptr);
 
-  const cef_color_t background_color = MainContext::Get()->GetBackgroundColor();
+  const cef_color_t background_color = HumanAppContext::Get()->GetBackgroundColor();
   const HBRUSH background_brush = CreateSolidBrush(
       RGB(CefColorGetR(background_color), CefColorGetG(background_color),
           CefColorGetB(background_color)));
 
   RegisterOsrClass(hInst, background_brush);
-
+  
   DWORD ex_style = 0;
   if (GetWindowLongPtr(parent_hwnd, GWL_EXSTYLE) & WS_EX_NOACTIVATE) {
     // Don't activate the browser window on creation.
     ex_style |= WS_EX_NOACTIVATE;
   }
-
+  
   // Create the native window with a border so it's easier to visually identify
   // OSR windows.
   hwnd_ = ::CreateWindowEx(
@@ -296,11 +300,14 @@ void OsrWindowWin::Create(HWND parent_hwnd, const RECT& rect) {
       rect.left, rect.top, rect.right - rect.left, rect.bottom - rect.top,
       parent_hwnd, 0, hInst, 0);
   CHECK(hwnd_);
-
+  
   client_rect_ = rect;
-
+  
   // Associate |this| with the window.
   SetUserDataPtr(hwnd_, this);
+  
+  // client_rect_ = rect;
+  // hwnd_ = parent_hwnd;
 
 #if defined(CEF_USE_ATL)
   accessibility_root_ = nullptr;
@@ -311,10 +318,10 @@ void OsrWindowWin::Create(HWND parent_hwnd, const RECT& rect) {
   DCHECK_EQ(register_res, S_OK);
 #endif
 
-  ime_handler_.reset(new OsrImeHandlerWin(hwnd_));
+  // ime_handler_.reset(new OsrImeHandlerWin(hwnd_));
 
   // Enable Touch Events if requested
-  if (client::MainContext::Get()->TouchEventsEnabled())
+  if (HumanAppContext::Get()->TouchEventsEnabled())
     RegisterTouchWindow(hwnd_, 0);
 
   // Notify the window owner.
@@ -335,7 +342,7 @@ void OsrWindowWin::Destroy() {
 
   // Destroy the native window.
   ::DestroyWindow(hwnd_);
-  ime_handler_.reset();
+  // ime_handler_.reset();
   hwnd_ = nullptr;
 }
 
@@ -385,65 +392,65 @@ void OsrWindowWin::OnIMESetContext(UINT message, WPARAM wParam, LPARAM lParam) {
   ::DefWindowProc(hwnd_, message, wParam, lParam);
 
   // Create Caret Window if required
-  if (ime_handler_) {
+  // if (ime_handler_) {
-    ime_handler_->CreateImeWindow();
+  //   ime_handler_->CreateImeWindow();
-    ime_handler_->MoveImeWindow();
+  //   ime_handler_->MoveImeWindow();
-  }
+  // }
 }
 
 void OsrWindowWin::OnIMEStartComposition() {
-  if (ime_handler_) {
+  // if (ime_handler_) {
-    ime_handler_->CreateImeWindow();
+  //   ime_handler_->CreateImeWindow();
-    ime_handler_->MoveImeWindow();
+  //   ime_handler_->MoveImeWindow();
-    ime_handler_->ResetComposition();
+  //   ime_handler_->ResetComposition();
-  }
+  // }
 }
 
 void OsrWindowWin::OnIMEComposition(UINT message,
                                     WPARAM wParam,
                                     LPARAM lParam) {
-  if (browser_ && ime_handler_) {
+  // if (browser_ && ime_handler_) {
-    CefString cTextStr;
+  //   CefString cTextStr;
-    if (ime_handler_->GetResult(lParam, cTextStr)) {
+  //   if (ime_handler_->GetResult(lParam, cTextStr)) {
-      // Send the text to the browser. The |replacement_range| and
+  //     // Send the text to the browser. The |replacement_range| and
-      // |relative_cursor_pos| params are not used on Windows, so provide
+  //     // |relative_cursor_pos| params are not used on Windows, so provide
-      // default invalid values.
+  //     // default invalid values.
-      browser_->GetHost()->ImeCommitText(cTextStr,
+  //     browser_->GetHost()->ImeCommitText(cTextStr,
-                                         CefRange(UINT32_MAX, UINT32_MAX), 0);
+  //                                        CefRange(UINT32_MAX, UINT32_MAX), 0);
-      ime_handler_->ResetComposition();
+  //     ime_handler_->ResetComposition();
-      // Continue reading the composition string - Japanese IMEs send both
+  //     // Continue reading the composition string - Japanese IMEs send both
-      // GCS_RESULTSTR and GCS_COMPSTR.
+  //     // GCS_RESULTSTR and GCS_COMPSTR.
-    }
+  //   }
-
+  //
-    std::vector<CefCompositionUnderline> underlines;
+  //   std::vector<CefCompositionUnderline> underlines;
-    int composition_start = 0;
+  //   int composition_start = 0;
-
+  //
-    if (ime_handler_->GetComposition(lParam, cTextStr, underlines,
+  //   if (ime_handler_->GetComposition(lParam, cTextStr, underlines,
-                                     composition_start)) {
+  //                                    composition_start)) {
-      // Send the composition string to the browser. The |replacement_range|
+  //     // Send the composition string to the browser. The |replacement_range|
-      // param is not used on Windows, so provide a default invalid value.
+  //     // param is not used on Windows, so provide a default invalid value.
-      browser_->GetHost()->ImeSetComposition(
+  //     browser_->GetHost()->ImeSetComposition(
-          cTextStr, underlines, CefRange(UINT32_MAX, UINT32_MAX),
+  //         cTextStr, underlines, CefRange(UINT32_MAX, UINT32_MAX),
-          CefRange(composition_start,
+  //         CefRange(composition_start,
-                   static_cast<int>(composition_start + cTextStr.length())));
+  //                  static_cast<int>(composition_start + cTextStr.length())));
-
+  //
-      // Update the Candidate Window position. The cursor is at the end so
+  //     // Update the Candidate Window position. The cursor is at the end so
-      // subtract 1. This is safe because IMM32 does not support non-zero-width
+  //     // subtract 1. This is safe because IMM32 does not support non-zero-width
-      // in a composition. Also,  negative values are safely ignored in
+  //     // in a composition. Also,  negative values are safely ignored in
-      // MoveImeWindow
+  //     // MoveImeWindow
-      ime_handler_->UpdateCaretPosition(composition_start - 1);
+  //     ime_handler_->UpdateCaretPosition(composition_start - 1);
-    } else {
+  //   } else {
-      OnIMECancelCompositionEvent();
+  //     OnIMECancelCompositionEvent();
-    }
+  //   }
-  }
+  // }
 }
 
 void OsrWindowWin::OnIMECancelCompositionEvent() {
-  if (browser_ && ime_handler_) {
+  // if (browser_ && ime_handler_) {
-    browser_->GetHost()->ImeCancelComposition();
+  //   browser_->GetHost()->ImeCancelComposition();
-    ime_handler_->ResetComposition();
+  //   ime_handler_->ResetComposition();
-    ime_handler_->DestroyImeWindow();
+  //   ime_handler_->DestroyImeWindow();
-  }
+  // }
 }
 
 // static
@@ -456,104 +463,9 @@ LRESULT CALLBACK OsrWindowWin::OsrWndProc(HWND hWnd,
   OsrWindowWin* self = GetUserDataPtr<OsrWindowWin*>(hWnd);
   if (!self)
     return DefWindowProc(hWnd, message, wParam, lParam);
-
+  
   // We want to handle IME events before the OS does any default handling.
-  switch (message) {
+  return self->OnMessage(hWnd, message, wParam, lParam);
-    case WM_IME_SETCONTEXT:
-      self->OnIMESetContext(message, wParam, lParam);
-      return 0;
-    case WM_IME_STARTCOMPOSITION:
-      self->OnIMEStartComposition();
-      return 0;
-    case WM_IME_COMPOSITION:
-      self->OnIMEComposition(message, wParam, lParam);
-      return 0;
-    case WM_IME_ENDCOMPOSITION:
-      self->OnIMECancelCompositionEvent();
-      // Let WTL call::DefWindowProc() and release its resources.
-      break;
-#if defined(CEF_USE_ATL)
-    case WM_GETOBJECT: {
-      // Only the lower 32 bits of lParam are valid when checking the object id
-      // because it sometimes gets sign-extended incorrectly (but not always).
-      DWORD obj_id = static_cast<DWORD>(static_cast<DWORD_PTR>(lParam));
-
-      // Accessibility readers will send an OBJID_CLIENT message.
-      if (static_cast<DWORD>(OBJID_CLIENT) == obj_id) {
-        if (self->accessibility_root_) {
-          return LresultFromObject(
-              IID_IAccessible, wParam,
-              static_cast<IAccessible*>(self->accessibility_root_));
-        } else {
-          // Notify the renderer to enable accessibility.
-          if (self->browser_ && self->browser_->GetHost())
-            self->browser_->GetHost()->SetAccessibilityState(STATE_ENABLED);
-        }
-      }
-    } break;
-#endif
-    case WM_LBUTTONDOWN:
-    case WM_RBUTTONDOWN:
-    case WM_MBUTTONDOWN:
-    case WM_LBUTTONUP:
-    case WM_RBUTTONUP:
-    case WM_MBUTTONUP:
-    case WM_MOUSEMOVE:
-    case WM_MOUSELEAVE:
-    case WM_MOUSEWHEEL:
-      self->OnMouseEvent(message, wParam, lParam);
-      break;
-
-    case WM_SIZE:
-      self->OnSize();
-      break;
-
-    case WM_SETFOCUS:
-    case WM_KILLFOCUS:
-      self->OnFocus(message == WM_SETFOCUS);
-      break;
-
-    case WM_CAPTURECHANGED:
-    case WM_CANCELMODE:
-      self->OnCaptureLost();
-      break;
-
-    case WM_SYSCHAR:
-    case WM_SYSKEYDOWN:
-    case WM_SYSKEYUP:
-    case WM_KEYDOWN:
-    case WM_KEYUP:
-    case WM_CHAR:
-      self->OnKeyEvent(message, wParam, lParam);
-      break;
-
-    case WM_PAINT:
-      self->OnPaint();
-      return 0;
-
-    case WM_ERASEBKGND:
-      if (self->OnEraseBkgnd())
-        break;
-      // Don't erase the background.
-      return 0;
-
-    // If your application does not require Win7 support, please do consider
-    // using WM_POINTER* messages instead of WM_TOUCH. WM_POINTER are more
-    // intutive, complete and simpler to code.
-    // https://msdn.microsoft.com/en-us/library/hh454903(v=vs.85).aspx
-    case WM_TOUCH:
-      if (self->OnTouchEvent(message, wParam, lParam))
-        return 0;
-      break;
-
-    case WM_NCDESTROY:
-      // Clear the reference to |self|.
-      SetUserDataPtr(hWnd, nullptr);
-      self->hwnd_ = nullptr;
-      break;
-  }
-
-  return DefWindowProc(hWnd, message, wParam, lParam);
 }
 
 void OsrWindowWin::OnMouseEvent(UINT message, WPARAM wParam, LPARAM lParam) {
@@ -756,6 +668,105 @@ void OsrWindowWin::OnSize() {
     browser_->GetHost()->WasResized();
 }
 
+LRESULT OsrWindowWin::OnMessage(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam) {
+  switch (message) {
+    case WM_IME_SETCONTEXT:
+      OnIMESetContext(message, wParam, lParam);
+      return 0;
+    case WM_IME_STARTCOMPOSITION:
+      OnIMEStartComposition();
+      return 0;
+    case WM_IME_COMPOSITION:
+      OnIMEComposition(message, wParam, lParam);
+      return 0;
+    case WM_IME_ENDCOMPOSITION:
+      OnIMECancelCompositionEvent();
+      // Let WTL call::DefWindowProc() and release its resources.
+      break;
+#if defined(CEF_USE_ATL)
+    case WM_GETOBJECT: {
+      // Only the lower 32 bits of lParam are valid when checking the object id
+      // because it sometimes gets sign-extended incorrectly (but not always).
+      DWORD obj_id = static_cast<DWORD>(static_cast<DWORD_PTR>(lParam));
+
+      // Accessibility readers will send an OBJID_CLIENT message.
+      if (static_cast<DWORD>(OBJID_CLIENT) == obj_id) {
+        if (self->accessibility_root_) {
+          return LresultFromObject(
+              IID_IAccessible, wParam,
+              static_cast<IAccessible*>(self->accessibility_root_));
+        } else {
+          // Notify the renderer to enable accessibility.
+          if (self->browser_ && self->browser_->GetHost())
+            self->browser_->GetHost()->SetAccessibilityState(STATE_ENABLED);
+        }
+      }
+    } break;
+#endif
+    case WM_LBUTTONDOWN:
+    case WM_RBUTTONDOWN:
+    case WM_MBUTTONDOWN:
+    case WM_LBUTTONUP:
+    case WM_RBUTTONUP:
+    case WM_MBUTTONUP:
+    case WM_MOUSEMOVE:
+    case WM_MOUSELEAVE:
+    case WM_MOUSEWHEEL:
+      OnMouseEvent(message, wParam, lParam);
+      break;
+
+    case WM_SIZE:
+      OnSize();
+      break;
+
+    case WM_SETFOCUS:
+    case WM_KILLFOCUS:
+      OnFocus(message == WM_SETFOCUS);
+      break;
+
+    case WM_CAPTURECHANGED:
+    case WM_CANCELMODE:
+      OnCaptureLost();
+      break;
+
+    case WM_SYSCHAR:
+    case WM_SYSKEYDOWN:
+    case WM_SYSKEYUP:
+    case WM_KEYDOWN:
+    case WM_KEYUP:
+    case WM_CHAR:
+      OnKeyEvent(message, wParam, lParam);
+      break;
+
+    case WM_PAINT:
+      OnPaint();
+      return 0;
+
+    case WM_ERASEBKGND:
+      if (OnEraseBkgnd())
+        break;
+      // Don't erase the background.
+      return 0;
+
+    // If your application does not require Win7 support, please do consider
+    // using WM_POINTER* messages instead of WM_TOUCH. WM_POINTER are more
+    // intutive, complete and simpler to code.
+    // https://msdn.microsoft.com/en-us/library/hh454903(v=vs.85).aspx
+    case WM_TOUCH:
+      if (OnTouchEvent(message, wParam, lParam))
+        return 0;
+      break;
+
+    case WM_NCDESTROY:
+      // Clear the reference to |self|.
+      SetUserDataPtr(hWnd, nullptr);
+      hwnd_ = nullptr;
+      break;
+  }
+
+  return DefWindowProc(hWnd, message, wParam, lParam);
+}
+
 void OsrWindowWin::OnFocus(bool setFocus) {
   if (browser_)
     browser_->GetHost()->SetFocus(setFocus);
@@ -1085,16 +1096,16 @@ void OsrWindowWin::OnImeCompositionRangeChanged(
     const CefRenderHandler::RectList& character_bounds) {
   CEF_REQUIRE_UI_THREAD();
 
-  if (ime_handler_) {
+  // if (ime_handler_) {
-    // Convert from view coordinates to device coordinates.
+  //   // Convert from view coordinates to device coordinates.
-    CefRenderHandler::RectList device_bounds;
+  //   CefRenderHandler::RectList device_bounds;
-    CefRenderHandler::RectList::const_iterator it = character_bounds.begin();
+  //   CefRenderHandler::RectList::const_iterator it = character_bounds.begin();
-    for (; it != character_bounds.end(); ++it) {
+  //   for (; it != character_bounds.end(); ++it) {
-      device_bounds.push_back(LogicalToDevice(*it, device_scale_factor_));
+  //     device_bounds.push_back(LogicalToDevice(*it, device_scale_factor_));
-    }
+  //   }
-
+  //
-    ime_handler_->ChangeCompositionRange(selection_range, device_bounds);
+  //   ime_handler_->ChangeCompositionRange(selection_range, device_bounds);
-  }
+  // }
 }
 
 void OsrWindowWin::UpdateAccessibilityTree(CefRefPtr<CefValue> value) {
@@ -1170,7 +1181,7 @@ CefBrowserHost::DragOperationsMask OsrWindowWin::OnDrop(
 void OsrWindowWin::EnsureRenderHandler() {
   CEF_REQUIRE_UI_THREAD();
   if (!render_handler_) {
-    if (settings_.shared_texture_enabled) {
+    if (OsrRendererSettings::OsrRendererType::D3D11 == settings_.render_type) {
       // Try to initialize D3D11 rendering.
       auto render_handler = new OsrRenderHandlerWinD3D11(settings_, hwnd_);
       if (render_handler->Initialize(browser_,
@@ -1181,18 +1192,14 @@ void OsrWindowWin::EnsureRenderHandler() {
         LOG(ERROR) << "Failed to initialize D3D11 rendering.";
         delete render_handler;
       }
-    }
+    } else if (OsrRendererSettings::OsrRendererType::OpenGL == settings_.render_type) {
-
+      auto render_handler = new OsrRenderHandlerWinGL(settings_, hwnd_);
-    // Fall back to GL rendering.
+      render_handler->Initialize(browser_);
-    //if (!render_handler_) {
+      render_handler_.reset(render_handler);  
-    //  auto render_handler = new OsrRenderHandlerWinGL(settings_, hwnd_);
+    } else {
-    //  render_handler->Initialize(browser_);
+      auto render_handler = new OsrRenderHandlerWinNative(settings_, hwnd_);
-    //  render_handler_.reset(render_handler);
+      render_handler->Initialize(browser_);
-    //}
+      render_handler_.reset(render_handler);
-    if (!render_handler_) {
-        auto render_handler = new OsrRenderHandlerWinNative(settings_, hwnd_);
-        render_handler->Initialize(browser_);
-        render_handler_.reset(render_handler);
     }
   }
 }

src/CEF/OsrWindowWin.h

@@ -8,11 +8,11 @@
 #include "include/base/cef_ref_counted.h"
 #include "include/wrapper/cef_closure_task.h"
 #include "include/wrapper/cef_helpers.h"
-#include "CEF/ClientHandlerOSR.h.h"
+#include "CEF/ClientHandlerOSR.h"
-#include "CEF/osr_accessibility_node.h"
+#include "CEF/OsrAccessibilityNode.h"
-#include "CEF/osr_dragdrop_win.h"
+#include "CEF/OsrDragdropWin.h"
-#include "CEF/osr_render_handler_win.h"
+#include "CEF/OsrRenderHandlerWin.h"
-#include "CEF/osr_renderer_settings.h"
+#include "CEF/OsrRendererSettings.h"
 
 class OsrAccessibilityHelper;
 class OsrImeHandlerWin;
@@ -62,6 +62,8 @@ class OsrWindowWin
   void SetDeviceScaleFactor(float device_scale_factor);
 
   const OsrRendererSettings& settings() const { return settings_; }
+  void OnSize() override;
+  LRESULT OnMessage(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam);
 
  private:
   // Only allow deletion via scoped_refptr.
@@ -84,7 +86,6 @@ class OsrWindowWin
 
   // WndProc message handlers.
   void OnMouseEvent(UINT message, WPARAM wParam, LPARAM lParam);
-  void OnSize();
   void OnFocus(bool setFocus);
   void OnCaptureLost();
   void OnKeyEvent(UINT message, WPARAM wParam, LPARAM lParam);
@@ -172,7 +173,7 @@ class OsrWindowWin
   std::unique_ptr<OsrRenderHandlerWin> render_handler_;
 
   // Class that encapsulates IMM32 APIs and controls IMEs attached to a window.
-  std::unique_ptr<OsrImeHandlerWin> ime_handler_;
+  // std::unique_ptr<OsrImeHandlerWin> ime_handler_;
 
   RECT client_rect_;
   float device_scale_factor_;

src/CEF/RootWindowCreate.cpp

@@ -2,7 +2,7 @@
 // reserved. Use of this source code is governed by a BSD-style license that
 // can be found in the LICENSE file.
 
-#include "CEF//RootWindow.h"
+#include "CEF/RootWindow.h"
 
 // #include "CEF/Rroot_window_views.h"
 
@@ -14,7 +14,6 @@
 #include "tests/cefclient/browser/root_window_mac.h"
 #endif
 
-namespace client {
 
 // static
 scoped_refptr<RootWindow> RootWindow::Create(bool use_views) {
@@ -33,4 +32,3 @@ scoped_refptr<RootWindow> RootWindow::Create(bool use_views) {
 #endif
 }
 
-}  // namespace client

src/CEF/RootWindowWin.cpp

@@ -84,7 +84,7 @@ float GetWindowScaleFactor(HWND hwnd) {
       return static_cast<float>(func_ptr(hwnd)) / DPI_1X;
   }
 
-  return client::GetDeviceScaleFactor();
+  return GetDeviceScaleFactor();
 }
 
 int GetButtonWidth(HWND hwnd) {
@@ -95,7 +95,6 @@ int GetURLBarHeight(HWND hwnd) {
   return LogicalToDevice(URLBAR_HEIGHT, GetWindowScaleFactor(hwnd));
 }
 
-}  // namespace
 
 RootWindowWin::RootWindowWin()
     : with_controls_(false),
@@ -303,7 +302,7 @@ bool RootWindowWin::WithExtension() const {
 void RootWindowWin::CreateBrowserWindow(const std::string& startup_url) {
   if (with_osr_) {
     OsrRendererSettings settings = {};
-    MainContext::Get()->PopulateOsrSettings(&settings);
+    HumanAppContext::Get()->PopulateOsrSettings(&settings);
     settings.background_color = CefColorSetARGB(0, 0, 0, 0);
     browser_window_.reset(
         new BrowserWindowOsrWin(this, with_controls_, startup_url, settings));
@@ -321,10 +320,10 @@ void RootWindowWin::CreateRootWindow(const CefBrowserSettings& settings,
   HINSTANCE hInstance = GetModuleHandle(nullptr);
 
   // Load strings from the resource file.
-  const std::wstring& window_title = GetResourceString(IDS_APP_TITLE);
+  constexpr wchar_t* window_title = L"HuamanRender";
-  const std::wstring& window_class = GetResourceString(IDC_CEFCLIENT);
+  constexpr wchar_t* window_class = L"HuamanRenderClass";
 
-  const cef_color_t background_color = MainContext::Get()->GetBackgroundColor();
+  const cef_color_t background_color = HumanAppContext::Get()->GetBackgroundColor();
   const HBRUSH background_brush = CreateSolidBrush(
       RGB(CefColorGetR(background_color), CefColorGetG(background_color),
           CefColorGetB(background_color)));
@@ -338,7 +337,7 @@ void RootWindowWin::CreateRootWindow(const CefBrowserSettings& settings,
 
   CefRefPtr<CefCommandLine> command_line =
       CefCommandLine::GetGlobalCommandLine();
-  const bool no_activate = command_line->HasSwitch(switches::kNoActivate);
+  const bool no_activate = command_line->HasSwitch(kNoActivate);
 
   const DWORD dwStyle = WS_OVERLAPPEDWINDOW | WS_CLIPCHILDREN;
   DWORD dwExStyle = always_on_top_ ? WS_EX_TOPMOST : 0;
@@ -346,6 +345,7 @@ void RootWindowWin::CreateRootWindow(const CefBrowserSettings& settings,
     // Don't activate the browser window on creation.
     dwExStyle |= WS_EX_NOACTIVATE;
   }
+  // dwExStyle |=  WS_EX_NOREDIRECTIONBITMAP ;
 
   int x, y, width, height;
   if (::IsRectEmpty(&start_rect_)) {
@@ -365,9 +365,14 @@ void RootWindowWin::CreateRootWindow(const CefBrowserSettings& settings,
   browser_settings_ = settings;
 
   // Create the main window initially hidden.
-  CreateWindowEx(dwExStyle, window_class.c_str(), window_title.c_str(), dwStyle,
+  CreateWindowEx(dwExStyle, window_class, window_title, dwStyle,
                  x, y, width, height, nullptr, nullptr, hInstance, this);
   CHECK(hwnd_);
+  // SetWindowLong(hwnd_,GWL_STYLE,WS_MINIMIZEBOX|WS_MAXIMIZEBOX|WS_SYSMENU);
+  SetWindowLong(hwnd_, GWL_EXSTYLE,
+    GetWindowLong(hwnd_, GWL_EXSTYLE) | WS_EX_LAYERED );
+  
+  // SetLayeredWindowAttributes(hwnd_, RGB(255, 0, 0), 0, LWA_COLORKEY);
 
   if (!called_enable_non_client_dpi_scaling_ && IsProcessPerMonitorDpiAware()) {
     // This call gets Windows to scale the non-client area when WM_DPICHANGED
@@ -389,7 +394,7 @@ void RootWindowWin::CreateRootWindow(const CefBrowserSettings& settings,
 
 // static
 void RootWindowWin::RegisterRootClass(HINSTANCE hInstance,
-                                      const std::wstring& window_class,
+                                      const wchar_t* window_class,
                                       HBRUSH background_brush) {
   // Only register the class one time.
   static bool class_registered = false;
@@ -410,7 +415,7 @@ void RootWindowWin::RegisterRootClass(HINSTANCE hInstance,
   wcex.hCursor = LoadCursor(nullptr, IDC_ARROW);
   wcex.hbrBackground = background_brush;
   wcex.lpszMenuName = MAKEINTRESOURCE(IDC_CEFCLIENT);
-  wcex.lpszClassName = window_class.c_str();
+  wcex.lpszClassName = window_class;
   wcex.hIconSm = LoadIcon(wcex.hInstance, MAKEINTRESOURCE(IDI_SMALL));
 
   RegisterClassEx(&wcex);
@@ -493,7 +498,7 @@ LRESULT CALLBACK RootWindowWin::RootWndProc(HWND hWnd,
     self = GetUserDataPtr<RootWindowWin*>(hWnd);
     if (!self)
       return DefWindowProc(hWnd, message, wParam, lParam);
-    DCHECK_EQ(hWnd, self->hwnd_);
+     DCHECK_EQ(hWnd, self->hwnd_);
   }
 
   if (self && message == self->find_message_id_) {
@@ -504,10 +509,25 @@ LRESULT CALLBACK RootWindowWin::RootWndProc(HWND hWnd,
     return 0;
   }
 
+  if (WM_NCCREATE == message) {
+    CREATESTRUCT* cs = reinterpret_cast<CREATESTRUCT*>(lParam);
+    self = reinterpret_cast<RootWindowWin*>(cs->lpCreateParams);
+    DCHECK(self);
+    // Associate |self| with the main window.
+    SetUserDataPtr(hWnd, self);
+    self->hwnd_ = hWnd;
+
+    self->OnNCCreate(cs);
+  }
+
   // Callback for the main window
+  return self->OnMessage(hWnd, message, wParam, lParam);
+}
+
+LRESULT RootWindowWin::OnMessage(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam) {
   switch (message) {
     case WM_COMMAND:
-      if (self->OnCommand(LOWORD(wParam)))
+      if (OnCommand(LOWORD(wParam)))
         return 0;
       break;
 
@@ -518,39 +538,31 @@ LRESULT CALLBACK RootWindowWin::RootWndProc(HWND hWnd,
 
       // Accessibility readers will send an OBJID_CLIENT message.
       if (static_cast<DWORD>(OBJID_CLIENT) == obj_id) {
-        if (self->GetBrowser() && self->GetBrowser()->GetHost())
+        if (GetBrowser() && GetBrowser()->GetHost())
-          self->GetBrowser()->GetHost()->SetAccessibilityState(STATE_ENABLED);
+          GetBrowser()->GetHost()->SetAccessibilityState(STATE_ENABLED);
       }
     } break;
 
-    case WM_PAINT:
-      self->OnPaint();
-      return 0;
-
     case WM_ACTIVATE:
-      self->OnActivate(LOWORD(wParam) != WA_INACTIVE);
+      OnActivate(LOWORD(wParam) != WA_INACTIVE);
       // Allow DefWindowProc to set keyboard focus.
       break;
 
-    case WM_SETFOCUS:
-      self->OnFocus();
-      return 0;
-
     case WM_SIZE:
-      self->OnSize(wParam == SIZE_MINIMIZED);
+      OnSize(message, wParam, lParam);
       break;
 
     case WM_MOVING:
     case WM_MOVE:
-      self->OnMove();
+      OnMove();
       return 0;
 
     case WM_DPICHANGED:
-      self->OnDpiChanged(wParam, lParam);
+      OnDpiChanged(wParam, lParam);
       break;
 
     case WM_ERASEBKGND:
-      if (self->OnEraseBkgnd())
+      if (OnEraseBkgnd())
         break;
       // Don't erase the background.
       return 0;
@@ -570,7 +582,7 @@ LRESULT CALLBACK RootWindowWin::RootWndProc(HWND hWnd,
       break;
 
     case WM_CLOSE:
-      if (self->OnClose())
+      if (OnClose())
         return 0;  // Cancel the close.
       break;
 
@@ -580,7 +592,7 @@ LRESULT CALLBACK RootWindowWin::RootWndProc(HWND hWnd,
         POINTS points = MAKEPOINTS(lParam);
         POINT point = {points.x, points.y};
         ::ScreenToClient(hWnd, &point);
-        if (::PtInRegion(self->draggable_region_, point.x, point.y)) {
+        if (::PtInRegion(draggable_region_, point.x, point.y)) {
           // If cursor is inside a draggable region return HTCAPTION to allow
           // dragging.
           return HTCAPTION;
@@ -588,45 +600,158 @@ LRESULT CALLBACK RootWindowWin::RootWndProc(HWND hWnd,
       }
       return hit;
     }
-
+  
-    case WM_NCCREATE: {
-      CREATESTRUCT* cs = reinterpret_cast<CREATESTRUCT*>(lParam);
-      self = reinterpret_cast<RootWindowWin*>(cs->lpCreateParams);
-      DCHECK(self);
-      // Associate |self| with the main window.
-      SetUserDataPtr(hWnd, self);
-      self->hwnd_ = hWnd;
-
-      self->OnNCCreate(cs);
-    } break;
-
     case WM_CREATE:
-      self->OnCreate(reinterpret_cast<CREATESTRUCT*>(lParam));
+      OnCreate(reinterpret_cast<CREATESTRUCT*>(lParam));
       break;
 
     case WM_NCDESTROY:
-      // Clear the reference to |self|.
+      OnNCDestory(message, wParam, lParam);
-      SetUserDataPtr(hWnd, nullptr);
+      break;
-      self->hwnd_ = nullptr;
+    case WM_IME_SETCONTEXT:
-      self->OnDestroyed();
+      OnIMESetContext(message, wParam, lParam);
+      return 0;
+    case WM_IME_STARTCOMPOSITION:
+      OnIMEStartComposition(message, wParam, lParam);
+      return 0;
+    case WM_IME_COMPOSITION:
+      OnIMEComposition(message, wParam, lParam);
+      return 0;
+    case WM_IME_ENDCOMPOSITION:
+      OnIMECancelCompositionEvent(message, wParam, lParam);
+      // Let WTL call::DefWindowProc() and release its resources.
+      break;
+#if defined(CEF_USE_ATL)
+    case WM_GETOBJECT: {
+      // Only the lower 32 bits of lParam are valid when checking the object id
+      // because it sometimes gets sign-extended incorrectly (but not always).
+      DWORD obj_id = static_cast<DWORD>(static_cast<DWORD_PTR>(lParam));
+
+      // Accessibility readers will send an OBJID_CLIENT message.
+      if (static_cast<DWORD>(OBJID_CLIENT) == obj_id) {
+        if (self->accessibility_root_) {
+          return LresultFromObject(
+              IID_IAccessible, wParam,
+              static_cast<IAccessible*>(self->accessibility_root_));
+        } else {
+          // Notify the renderer to enable accessibility.
+          if (self->browser_ && self->browser_->GetHost())
+            self->browser_->GetHost()->SetAccessibilityState(STATE_ENABLED);
+        }
+      }
+    } break;
+#endif
+    case WM_LBUTTONDOWN:
+    case WM_RBUTTONDOWN:
+    case WM_MBUTTONDOWN:
+    case WM_LBUTTONUP:
+    case WM_RBUTTONUP:
+    case WM_MBUTTONUP:
+    case WM_MOUSEMOVE:
+    case WM_MOUSELEAVE:
+    case WM_MOUSEWHEEL:
+      OnMouseEvent(message, wParam, lParam);
+      break;
+
+    case WM_SETFOCUS:
+    case WM_KILLFOCUS:
+      OnFocus(message, wParam, lParam);
+      break;
+
+    case WM_CAPTURECHANGED:
+    case WM_CANCELMODE:
+      OnCaptureLost(message, wParam, lParam);
+      break;
+
+    case WM_SYSCHAR:
+    case WM_SYSKEYDOWN:
+    case WM_SYSKEYUP:
+    case WM_KEYDOWN:
+    case WM_KEYUP:
+    case WM_CHAR:
+      OnKeyEvent(message, wParam, lParam);
+      break;
+
+    case WM_PAINT:
+      OnPaint(message, wParam, lParam);
+      return 0;
+
+    // If your application does not require Win7 support, please do consider
+    // using WM_POINTER* messages instead of WM_TOUCH. WM_POINTER are more
+    // intutive, complete and simpler to code.
+    // https://msdn.microsoft.com/en-us/library/hh454903(v=vs.85).aspx
+    case WM_TOUCH:
+      OnTouchEvent(message, wParam, lParam);
       break;
   }
 
   return DefWindowProc(hWnd, message, wParam, lParam);
 }
 
-void RootWindowWin::OnPaint() {
+void RootWindowWin::OnIMESetContext(UINT message, WPARAM wParam, LPARAM lParam) {
-  PAINTSTRUCT ps;
+  if (browser_window_ && ::IsWindowEnabled(hwnd_))
-  BeginPaint(hwnd_, &ps);
+    browser_window_->OnMessage(hwnd_, message, wParam, lParam);
-  EndPaint(hwnd_, &ps);
 }
 
-void RootWindowWin::OnFocus() {
+void RootWindowWin::OnIMEStartComposition(UINT message, WPARAM wParam, LPARAM lParam) {
+  if (browser_window_ && ::IsWindowEnabled(hwnd_))
+    browser_window_->OnMessage(hwnd_, message, wParam, lParam);
+}
+
+void RootWindowWin::OnIMEComposition(UINT message, WPARAM wParam, LPARAM lParam) {
+  if (browser_window_ && ::IsWindowEnabled(hwnd_))
+    browser_window_->OnMessage(hwnd_, message, wParam, lParam);
+}
+
+void RootWindowWin::OnIMECancelCompositionEvent(UINT message, WPARAM wParam, LPARAM lParam) {
+  if (browser_window_ && ::IsWindowEnabled(hwnd_))
+    browser_window_->OnMessage(hwnd_, message, wParam, lParam);
+}
+
+void RootWindowWin::OnMouseEvent(UINT message, WPARAM wParam, LPARAM lParam) {
+  if (browser_window_ && ::IsWindowEnabled(hwnd_))
+    browser_window_->OnMessage(hwnd_, message, wParam, lParam);
+}
+
+void RootWindowWin::OnCaptureLost(UINT message, WPARAM wParam, LPARAM lParam) {
+  if (browser_window_ && ::IsWindowEnabled(hwnd_))
+    browser_window_->OnMessage(hwnd_, message, wParam, lParam);
+}
+
+void RootWindowWin::OnKeyEvent(UINT message, WPARAM wParam, LPARAM lParam) {
+  if (browser_window_ && ::IsWindowEnabled(hwnd_))
+    browser_window_->OnMessage(hwnd_, message, wParam, lParam);
+}
+
+void RootWindowWin::OnTouchEvent(UINT message, WPARAM wParam, LPARAM lParam) {
+  if (browser_window_ && ::IsWindowEnabled(hwnd_))
+    browser_window_->OnMessage(hwnd_, message, wParam, lParam);
+}
+
+void RootWindowWin::OnNCDestory(UINT message, WPARAM wParam, LPARAM lParam) {
+  if (browser_window_ && ::IsWindowEnabled(hwnd_))
+    browser_window_->OnMessage(hwnd_, message, wParam, lParam);
+
+  // Clear the reference to |self|.
+  SetUserDataPtr(hwnd_, nullptr);
+  hwnd_ = nullptr;
+  OnDestroyed();
+}
+
+void RootWindowWin::OnPaint(UINT message, WPARAM wParam, LPARAM lParam) {
+  if (browser_window_ && ::IsWindowEnabled(hwnd_))
+    browser_window_->OnMessage(hwnd_, message, wParam, lParam);
+  // PAINTSTRUCT ps;
+  // BeginPaint(hwnd_, &ps);
+  // EndPaint(hwnd_, &ps);
+}
+
+void RootWindowWin::OnFocus(UINT message, WPARAM wParam, LPARAM lParam) {
   // Selecting "Close window" from the task bar menu may send a focus
   // notification even though the window is currently disabled (e.g. while a
   // modal JS dialog is displayed).
   if (browser_window_ && ::IsWindowEnabled(hwnd_))
-    browser_window_->SetFocus(true);
+    browser_window_->OnMessage(hwnd_, message, wParam, lParam);
 }
 
 void RootWindowWin::OnActivate(bool active) {
@@ -634,16 +759,17 @@ void RootWindowWin::OnActivate(bool active) {
     delegate_->OnRootWindowActivated(this);
 }
 
-void RootWindowWin::OnSize(bool minimized) {
+void RootWindowWin::OnSize(UINT message, WPARAM wParam, LPARAM lParam) {
-  if (minimized) {
+  if (wParam == SIZE_MINIMIZED) {
     // Notify the browser window that it was hidden and do nothing further.
     if (browser_window_)
       browser_window_->Hide();
     return;
   }
 
-  if (browser_window_)
+  if (browser_window_) {
     browser_window_->Show();
+  }
 
   RECT rect;
   GetClientRect(hwnd_, &rect);
@@ -715,7 +841,8 @@ void RootWindowWin::OnSize(bool minimized) {
     DCHECK(result);
   } else if (browser_window_) {
     // Size the browser window to the whole client area.
-    browser_window_->SetBounds(0, 0, rect.right, rect.bottom);
+    // browser_window_->SetBounds(0, 0, rect.right, rect.bottom);
+    browser_window_->OnMessage(hwnd_, message, wParam, lParam);
   }
 }
 
@@ -990,7 +1117,7 @@ void RootWindowWin::OnBrowserCreated(CefRefPtr<CefBrowser> browser) {
     CreateRootWindow(CefBrowserSettings(), false);
   } else {
     // Make sure the browser is sized correctly.
-    OnSize(false);
+    // OnSize(false);
   }
 
   delegate_->OnBrowserCreated(this, browser);
@@ -1031,8 +1158,8 @@ void RootWindowWin::OnSetFullscreen(bool fullscreen) {
 
   CefRefPtr<CefBrowser> browser = GetBrowser();
   if (browser) {
-    std::unique_ptr<window_test::WindowTestRunnerWin> test_runner(
+    std::unique_ptr<WindowTestRunnerWin> test_runner(
-        new window_test::WindowTestRunnerWin());
+        new WindowTestRunnerWin());
     if (fullscreen)
       test_runner->Maximize(browser);
     else
@@ -1100,7 +1227,6 @@ void RootWindowWin::OnSetLoadingState(bool isLoading,
   }
 }
 
-namespace {
 
 LPCWSTR kParentWndProc = L"CefParentWndProc";
 LPCWSTR kDraggableRegion = L"CefDraggableRegion";

src/CEF/RootWindowWin.h

@@ -52,7 +52,7 @@ class RootWindowWin : public RootWindow, public BrowserWindow::Delegate {
 
   // Register the root window class.
   static void RegisterRootClass(HINSTANCE hInstance,
-                                const std::wstring& window_class,
+                                const wchar_t* window_class,
                                 HBRUSH background_brush);
 
   // Window procedure for the edit field.
@@ -72,12 +72,22 @@ class RootWindowWin : public RootWindow, public BrowserWindow::Delegate {
                                       UINT message,
                                       WPARAM wParam,
                                       LPARAM lParam);
-
+    
+  LRESULT OnMessage(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam);
+  void OnIMESetContext(UINT message, WPARAM wParam, LPARAM lParam);  
+  void OnIMEStartComposition(UINT message, WPARAM wParam, LPARAM lParam);  
+  void OnIMEComposition(UINT message, WPARAM wParam, LPARAM lParam);  
+  void OnIMECancelCompositionEvent(UINT message, WPARAM wParam, LPARAM lParam);  
+  void OnMouseEvent(UINT message, WPARAM wParam, LPARAM lParam);  
+  void OnCaptureLost(UINT message, WPARAM wParam, LPARAM lParam);  
+  void OnKeyEvent(UINT message, WPARAM wParam, LPARAM lParam);  
+  void OnTouchEvent(UINT message, WPARAM wParam, LPARAM lParam);  
+  void OnNCDestory(UINT message, WPARAM wParam, LPARAM lParam);  
   // Event handlers.
-  void OnPaint();
+  void OnPaint(UINT message, WPARAM wParam, LPARAM lParam);
-  void OnFocus();
+  void OnFocus(UINT message, WPARAM wParam, LPARAM lParam);
   void OnActivate(bool active);
-  void OnSize(bool minimized);
+  void OnSize(UINT message, WPARAM wParam, LPARAM lParam);
   void OnMove();
   void OnDpiChanged(WPARAM wParam, LPARAM lParam);
   bool OnEraseBkgnd();
@@ -132,7 +142,7 @@ class RootWindowWin : public RootWindow, public BrowserWindow::Delegate {
   HWND forward_hwnd_;
   HWND reload_hwnd_;
   HWND stop_hwnd_;
-
+  
   // URL text field.
   HWND edit_hwnd_;
   WNDPROC edit_wndproc_old_;

src/CEF/SchemeTest.cpp

@@ -139,7 +139,9 @@ class ClientSchemeHandlerFactory : public CefSchemeHandlerFactory {
   DISALLOW_COPY_AND_ASSIGN(ClientSchemeHandlerFactory);
 };
 
-void RegisterSchemeHandlers() {
+namespace scheme_test {
-  CefRegisterSchemeHandlerFactory("client", "tests",
+  void RegisterSchemeHandlers() {
-                                  new ClientSchemeHandlerFactory());
+    CefRegisterSchemeHandlerFactory("client", "tests",
-}
+                                    new ClientSchemeHandlerFactory());
+  }
+}

src/CEF/SchemeTest.h

@@ -7,5 +7,6 @@
 // Create and register the custom scheme handler. See
 // common/scheme_handler_common.h for registration of the custom scheme
 // name/type which must occur in all processes. Called from test_runner.cc.
-void RegisterSchemeHandlers();
+namespace scheme_test {
-
+    void RegisterSchemeHandlers();   
+}

src/CEF/TestRunner.cpp

@@ -844,15 +844,16 @@ namespace test_runner {
 
   void RegisterSchemeHandlers() {
     // Register the scheme handler.
-    RegisterSchemeHandlers();
+    scheme_test::RegisterSchemeHandlers();
   }
-}
+
-CefRefPtr<CefResponseFilter> GetResourceResponseFilter(
+  CefRefPtr<CefResponseFilter> GetResourceResponseFilter(
-    CefRefPtr<CefBrowser> browser,
+      CefRefPtr<CefBrowser> browser,
-    CefRefPtr<CefFrame> frame,
+      CefRefPtr<CefFrame> frame,
-    CefRefPtr<CefRequest> request,
+      CefRefPtr<CefRequest> request,
-    CefRefPtr<CefResponse> response) {
+      CefRefPtr<CefResponse> response) {
-  // Create the response filter.
+    // Create the response filter.
-  return GetResourceResponseFilter(browser, frame,
+    return response_filter_test::GetResourceResponseFilter(browser, frame,
-                                                         request, response);
+                                                           request, response);
-}
+  }
+}

src/CEF/TestRunner.h

@@ -52,11 +52,11 @@ namespace test_runner {
 
     // Register scheme handlers for tests.
     void RegisterSchemeHandlers();
-}
 
-// Create a resource response filter for tests.
+    // Create a resource response filter for tests.
-CefRefPtr<CefResponseFilter> GetResourceResponseFilter(
+    CefRefPtr<CefResponseFilter> GetResourceResponseFilter(
-    CefRefPtr<CefBrowser> browser,
+        CefRefPtr<CefBrowser> browser,
-    CefRefPtr<CefFrame> frame,
+        CefRefPtr<CefFrame> frame,
-    CefRefPtr<CefRequest> request,
+        CefRefPtr<CefRequest> request,
-    CefRefPtr<CefResponse> response);
+        CefRefPtr<CefResponse> response);
+}

src/CMakeLists.txt

@@ -79,6 +79,10 @@ target_link_libraries(
     opengl32
     glew32s
     glfw3
+    d3d11
+    glu32
+    imm32
+    opengl32
     debug spdlogd
     optimized spdlog
     debug Debug/libcef