[cros] Initial WebRTC-enabled implementation of user image picker on OOBE.

chrome/browser/ui/webui/chromeos/login/user_image_screen_handler.h

 // Copyright (c) 2011 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 CHROME_BROWSER_UI_WEBUI_CHROMEOS_LOGIN_USER_IMAGE_SCREEN_HANDLER_H_
 #define CHROME_BROWSER_UI_WEBUI_CHROMEOS_LOGIN_USER_IMAGE_SCREEN_HANDLER_H_
 
 #include "base/memory/weak_ptr.h"
 #include "base/time.h"
 #include "chrome/browser/chromeos/login/user_image_screen_actor.h"
 #include "chrome/browser/chromeos/options/take_photo_dialog.h"
+#include "chrome/browser/image_decoder.h"
 #include "chrome/browser/ui/webui/chromeos/login/base_screen_handler.h"
 #include "chrome/browser/ui/webui/chromeos/login/oobe_ui.h"
 #include "third_party/skia/include/core/SkBitmap.h"
 #include "ui/gfx/image/image_skia.h"
 #include "ui/gfx/native_widget_types.h"
 
 namespace base {
 class ListValue;
 }  // namespace base
 
 namespace chromeos {
 
 // WebUI implementation of UserImageScreenActor. It is used to interact
 // with JS page part allowing user to select avatar.
 class UserImageScreenHandler : public UserImageScreenActor,
                                public BaseScreenHandler,
-                               public TakePhotoDialog::Delegate {
+                               public TakePhotoDialog::Delegate,
+                               public ImageDecoder::Delegate {
  public:
   UserImageScreenHandler();
   virtual ~UserImageScreenHandler();
 
   // BaseScreenHandler implementation:
   virtual void GetLocalizedStrings(
       base::DictionaryValue* localized_strings) OVERRIDE;
   virtual void Initialize() OVERRIDE;
 
   // UserImageScreenActor implementation:
@@ skipping 17 matching lines @@
   // TakePhotoDialog::Delegate implementation.
   virtual void OnPhotoAccepted(const gfx::ImageSkia& photo) OVERRIDE;
 
  private:
   // Sends profile image as a data URL to the page.
   void SendProfileImage(const std::string& data_url);
 
   // Opens the camera capture dialog.
   void HandleTakePhoto(const base::ListValue* args);
 
+  // Handles photo taken with WebRTC UI.
+  void HandlePhotoTaken(const base::ListValue* args);
+
   // Handles clicking on default user image.
   void HandleSelectImage(const base::ListValue* args);
 
   // Called when user accept the image closing the screen.
   void HandleImageAccepted(const base::ListValue* args);
 
   // Called when the user image screen has been loaded and shown.
   void HandleScreenShown(const base::ListValue* args);
 
   // Called when the camera presence check has been completed.
   void OnCameraPresenceCheckDone();
 
+  // Overriden from ImageDecoder::Delegate:
+  virtual void OnImageDecoded(const ImageDecoder* decoder,
+                              const SkBitmap& decoded_image) OVERRIDE;
+  virtual void OnDecodeImageFailed(const ImageDecoder* decoder) OVERRIDE;
+
+
   UserImageScreenActor::Delegate* screen_;
 
   // Keeps whether screen should be shown right after initialization.
   bool show_on_init_;
 
   // Index of the selected user image.
   int selected_image_;
 
   // Last user photo, if taken.
   gfx::ImageSkia user_photo_;
 
+  // Last ImageDecoder instance used to decode an image blob received by
+  // HandlePhotoTaken.
+  scoped_refptr<ImageDecoder> image_decoder_;
+
+  // If |true|, decoded photo should be immediately accepeted (i.e., both
+  // HandleTakePhoto and HandleImageAccepted have already been called but we're
+  // still waiting for  photo image decoding to finish.
+  bool accept_photo_after_decoding_;
+
   // Data URL for |user_photo_|.
   std::string user_photo_data_url_;
 
   // Data URL of the profile picture;
   std::string profile_picture_data_url_;
 
   // True if user has no custom profile picture.
   bool profile_picture_absent_;
 
   base::WeakPtrFactory<UserImageScreenHandler> weak_factory_;
 
   base::Time screen_show_time_;
 
   DISALLOW_COPY_AND_ASSIGN(UserImageScreenHandler);
 };
 
 }  // namespace chromeos
 
 #endif  // CHROME_BROWSER_UI_WEBUI_CHROMEOS_LOGIN_USER_IMAGE_SCREEN_HANDLER_H_