Add ink drop ripple to status tray

ash/common/system/tray/system_tray.cc

Index: ash/common/system/tray/system_tray.cc
diff --git a/ash/common/system/tray/system_tray.cc b/ash/common/system/tray/system_tray.cc
index 17491859c8472a95fa95bc739c24785afef98356..97c945c51160588047412d74cffb80e91b0b9faf 100644
--- a/ash/common/system/tray/system_tray.cc
+++ b/ash/common/system/tray/system_tray.cc
@@ -216,6 +216,7 @@ SystemTray::SystemTray(WmShelf* wm_shelf)
       default_bubble_height_(0),
       hide_notifications_(false),
       full_system_tray_menu_(false),
+      tray_user_active_(nullptr),
       tray_accessibility_(nullptr),
       tray_audio_(nullptr),
       tray_cast_(nullptr),
@@ -225,7 +226,12 @@ SystemTray::SystemTray(WmShelf* wm_shelf)
       tray_update_(nullptr),
       screen_capture_tray_item_(nullptr),
       screen_share_tray_item_(nullptr) {
-  SetContentsBackground(true);
+  if (MaterialDesignController::IsShelfMaterial()) {
+    SetInkDropMode(InkDropMode::ON);
+    SetContentsBackground(false);
+  } else {
+    SetContentsBackground(true);
+  }
 }
 
 SystemTray::~SystemTray() {
@@ -260,8 +266,12 @@ void SystemTray::CreateItems(SystemTrayDelegate* delegate) {
   int maximum_user_profiles = WmShell::Get()
                                   ->GetSessionStateDelegate()
                                   ->GetMaximumNumberOfLoggedInUsers();
-  for (int i = 0; i < maximum_user_profiles; i++)
-    AddTrayItem(new TrayUser(this, i));
+  for (int i = 0; i < maximum_user_profiles; i++) {
+    TrayUser* tray_user = new TrayUser(this, i);
+    if (i == 0)
+      tray_user_active_ = tray_user;
+    AddTrayItem(tray_user);
+  }
 
   // Crucially, this trailing padding has to be inside the user item(s).
   // Otherwise it could be a main axis margin on the tray's box layout.
@@ -859,6 +869,20 @@ void SystemTray::ActivateBubble() {
   bubble_view->GetWidget()->Activate();
 }
 
+gfx::Insets SystemTray::GetBackgroundInsets() const {

[bruthig, 2016/11/17 06:31:20]

Double check with Sebastien but I imagine we want the ink drop to be behind the
avatar.  I think you would be able to just make TrayUser::avatar_ paint to it's
own layer.  This would also solve the rounded corners on the ink drop on the
right side too.

[mohsen, 2016/11/17 20:10:12]

Sure. Done.

+  gfx::Insets insets = TrayBackgroundView::GetBackgroundInsets();
+  if (tray_user_active_ && tray_user_active_->is_avatar_visible()) {
+    if (IsHorizontalAlignment(shelf_alignment())) {
+      insets.Set(insets.top(), insets.left(), insets.bottom(),
+                 insets.right() + kTrayItemSize);
+    } else {
+      insets.Set(insets.top(), insets.left(), insets.bottom() + kTrayItemSize,
+                 insets.right());
+    }
+  }
+  return insets;
+}
+
 bool SystemTray::PerformAction(const ui::Event& event) {
   // If we're already showing the default view, hide it; otherwise, show it
   // (and hide any popup that's currently shown).