Show GAIA profile info in NTP

chrome/browser/ui/webui/ntp/ntp_login_handler.cc

Index: chrome/browser/ui/webui/ntp/ntp_login_handler.cc
diff --git a/chrome/browser/ui/webui/ntp/ntp_login_handler.cc b/chrome/browser/ui/webui/ntp/ntp_login_handler.cc
index c1a007f96bd88c352c32a60631d396d6e684ff00..dc7f087bd1a15199124028eac77cb0486d5d65d5 100644
--- a/chrome/browser/ui/webui/ntp/ntp_login_handler.cc
+++ b/chrome/browser/ui/webui/ntp/ntp_login_handler.cc
@@ -11,10 +11,13 @@
 #include "base/metrics/histogram.h"
 #include "base/utf_string_conversions.h"
 #include "base/values.h"
+#include "chrome/browser/browser_process.h"
 #include "chrome/browser/google/google_util.h"
 #include "chrome/browser/prefs/pref_notifier.h"
 #include "chrome/browser/prefs/pref_service.h"
 #include "chrome/browser/profiles/profile.h"
+#include "chrome/browser/profiles/profile_info_cache.h"
+#include "chrome/browser/profiles/profile_manager.h"
 #include "chrome/browser/profiles/profile_metrics.h"
 #include "chrome/browser/sync/profile_sync_service.h"
 #include "chrome/browser/sync/sync_setup_flow.h"
@@ -23,15 +26,41 @@
 #include "chrome/browser/ui/browser_window.h"
 #include "chrome/browser/ui/tab_contents/tab_contents_wrapper.h"
 #include "chrome/browser/ui/webui/sync_promo_ui.h"
+#include "chrome/browser/ui/webui/web_ui_util.h"
 #include "chrome/browser/web_resource/promo_resource_service.h"
 #include "chrome/common/chrome_notification_types.h"
 #include "chrome/common/pref_names.h"
 #include "chrome/common/url_constants.h"
 #include "content/browser/tab_contents/tab_contents.h"
 #include "content/public/browser/notification_details.h"
+#include "content/public/browser/notification_service.h"
 #include "grit/chromium_strings.h"
 #include "grit/generated_resources.h"
+#include "skia/ext/image_operations.h"
 #include "ui/base/l10n/l10n_util.h"
+#include "ui/gfx/canvas_skia.h"
+#include "ui/gfx/image/image.h"
+
+namespace {
+
+SkBitmap GetGAIAPictureForNTP(const gfx::Image& image) {
+  // This value must match the width and height value of login-status-icon
+  // in new_tab.css.
+  const int length = 27;
+  SkBitmap bmp = skia::ImageOperations::Resize(
+      image, skia::ImageOperations::RESIZE_BEST, length, length);
+
+  gfx::CanvasSkia canvas(length, length, false);
+  canvas.DrawBitmapInt(bmp, 0, 0);
+
+  // Draw a gray border on the inside of the icon.
+  SkColor color = SkColorSetARGB(83, 0, 0, 0);
+  canvas.DrawRectInt(color, 0, 0, length - 1, length - 1);
+
+  return canvas.ExtractBitmap();
+}
+
+} // namespace
 
 NTPLoginHandler::NTPLoginHandler() {
 }
@@ -43,6 +72,9 @@ WebUIMessageHandler* NTPLoginHandler::Attach(WebUI* web_ui) {
   PrefService* pref_service = Profile::FromWebUI(web_ui)->GetPrefs();
   username_pref_.Init(prefs::kGoogleServicesUsername, pref_service, this);
 
+  registrar_.Add(this, chrome::NOTIFICATION_PROFILE_CACHED_INFO_CHANGED,
+                 content::NotificationService::AllSources());
+
   return WebUIMessageHandler::Attach(web_ui);
 }
 
@@ -64,10 +96,15 @@ void NTPLoginHandler::RegisterMessages() {
 void NTPLoginHandler::Observe(int type,
                               const content::NotificationSource& source,
                               const content::NotificationDetails& details) {
-  DCHECK(type == chrome::NOTIFICATION_PREF_CHANGED);
-  std::string* name = content::Details<std::string>(details).ptr();
-  if (prefs::kGoogleServicesUsername == *name)
+  if (type == chrome::NOTIFICATION_PROFILE_CACHED_INFO_CHANGED) {
     UpdateLogin();
+  } else if (type == chrome::NOTIFICATION_PREF_CHANGED) {
+    std::string* name = content::Details<std::string>(details).ptr();
+    if (prefs::kGoogleServicesUsername == *name)
+      UpdateLogin();
+  } else {
+    NOTREACHED();
+  }
 }
 
 void NTPLoginHandler::HandleInitializeSyncLogin(const ListValue* args) {
@@ -137,8 +174,25 @@ void NTPLoginHandler::UpdateLogin() {
       prefs::kGoogleServicesUsername);
 
   string16 header, sub_header;
+  std::string icon_url;
   if (!username.empty()) {
-    header = UTF8ToUTF16(username);
+    ProfileInfoCache& cache =
+        g_browser_process->profile_manager()->GetProfileInfoCache();
+    size_t profile_index = cache.GetIndexOfProfileWithPath(profile->GetPath());
+    if (profile_index != std::string::npos) {
+      // Only show the profile picture and full name for the single profile
+      // case. In the multi-profile case the profile picture is visible in the
+      // title bar and the full name can be ambiguous.
+      if (cache.GetNumberOfProfiles() == 1) {
+        header = cache.GetGAIANameOfProfileAtIndex(profile_index);
+        const gfx::Image* image =
+            cache.GetGAIAPictureOfProfileAtIndex(profile_index);
+        if (image)
+          icon_url = web_ui_util::GetImageDataUrl(GetGAIAPictureForNTP(*image));
+      }
+      if (header.empty())
+        header = UTF8ToUTF16(username);
+    }
   } else if (SyncPromoUI::ShouldShowSyncPromo(profile) &&
              (SyncPromoUI::UserHasSeenSyncPromoAtStartup(profile) ||
               PromoResourceService::CanShowNTPSignInPromo(profile))) {
@@ -157,8 +211,9 @@ void NTPLoginHandler::UpdateLogin() {
 
   StringValue header_value(header);
   StringValue sub_header_value(sub_header);
+  StringValue icon_url_value(icon_url);
   web_ui_->CallJavascriptFunction(
-      "updateLogin", header_value, sub_header_value);
+      "updateLogin", header_value, sub_header_value, icon_url_value);
 }
 
 // static