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      1 // Copyright (c) 2011 The Chromium Authors. All rights reserved.
      2 // Use of this source code is governed by a BSD-style license that can be
      3 // found in the LICENSE file.
      4 
      5 #include "chrome/browser/ui/webui/options/chromeos/user_image_source.h"
      6 
      7 #include "base/memory/ref_counted_memory.h"
      8 #include "chrome/browser/chromeos/login/user_manager.h"
      9 #include "chrome/common/url_constants.h"
     10 #include "grit/theme_resources.h"
     11 #include "ui/base/resource/resource_bundle.h"
     12 #include "ui/gfx/codec/png_codec.h"
     13 
     14 namespace chromeos {
     15 
     16 std::vector<unsigned char> UserImageSource::GetUserImage(
     17     const std::string& email) const {
     18   std::vector<unsigned char> user_image;
     19   chromeos::UserVector users = chromeos::UserManager::Get()->GetUsers();
     20   for (size_t i = 0; i < users.size(); ++i) {
     21     if (users[i].email() == email) {
     22       gfx::PNGCodec::EncodeBGRASkBitmap(users[i].image(), false, &user_image);
     23       return user_image;
     24     }
     25   }
     26   gfx::PNGCodec::EncodeBGRASkBitmap(
     27       *ResourceBundle::GetSharedInstance().GetBitmapNamed(
     28           IDR_LOGIN_DEFAULT_USER),
     29       false,
     30       &user_image);
     31   return user_image;
     32 }
     33 
     34 UserImageSource::UserImageSource()
     35     : DataSource(chrome::kChromeUIUserImageHost, MessageLoop::current()) {
     36 }
     37 
     38 UserImageSource::~UserImageSource() {}
     39 
     40 void UserImageSource::StartDataRequest(const std::string& path,
     41                                        bool is_incognito,
     42                                        int request_id) {
     43   // Strip the query param value - we only use it as a hack to ensure our
     44   // image gets reloaded instead of being pulled from the browser cache
     45   std::string email = path.substr(0, path.find_first_of("?"));
     46   SendResponse(request_id, new RefCountedBytes(GetUserImage(email)));
     47 }
     48 
     49 std::string UserImageSource::GetMimeType(const std::string&) const {
     50   // We need to explicitly return a mime type, otherwise if the user tries to
     51   // drag the image they get no extension.
     52   return "image/png";
     53 }
     54 
     55 }  // namespace chromeos
     56