ash uber tray: Add a tray item for the user.

ash/system/tray_user.cc

+// Copyright (c) 2012 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 "ash/system/tray_user.h"
+
+#include "ash/shell.h"
+#include "ash/system/tray/system_tray_delegate.h"
+#include "base/utf_string_conversions.h"
+#include "grit/ui_resources.h"
+#include "ui/base/resource/resource_bundle.h"
+#include "ui/gfx/size.h"
+#include "ui/views/controls/button/button.h"
+#include "ui/views/controls/button/text_button.h"
+#include "ui/views/controls/image_view.h"
+#include "ui/views/controls/label.h"
+#include "ui/views/layout/box_layout.h"
+#include "ui/views/view.h"
+
+namespace {
+
+// A custom textbutton with some extra vertical padding, and custom border,
+// alignment and hover-effects.
+class TrayButton : public views::TextButton {
+ public:
+  TrayButton(views::ButtonListener* listener, std::string text)
+      : views::TextButton(listener, ASCIIToUTF16(text)),
+        hover_(false),
+        hover_bg_(views::Background::CreateSolidBackground(SkColorSetARGB(
+               10, 0, 0, 0))) {
+    set_alignment(ALIGN_CENTER);
+    set_border(views::Border::CreateSolidSidedBorder(
+          0, 1, 0, 1, SkColorSetARGB(25, 0, 0, 0)));
+  }
+
+ private:
+  // Overridden from views::View.
+  virtual gfx::Size GetPreferredSize() OVERRIDE {
+    gfx::Size size = views::TextButton::GetPreferredSize();
+    size.Enlarge(0, 10);
+    return size;
+  }
+
+  virtual void OnMouseEntered(const views::MouseEvent& event) OVERRIDE {
+    hover_ = true;
+    SchedulePaint();
+  }
+
+  virtual void OnMouseExited(const views::MouseEvent& event) OVERRIDE {
+    hover_ = false;
+    SchedulePaint();
+  }
+
+  virtual void OnPaintBackground(gfx::Canvas* canvas) OVERRIDE {
+    if (hover_)
+      hover_bg_->Paint(canvas, this);
+    else
+      views::TextButton::OnPaintBackground(canvas);
+  }
+
+  bool hover_;
+  views::Background* hover_bg_;
+
+  DISALLOW_COPY_AND_ASSIGN(TrayButton);
+};
+
+class UserView : public views::View,
+                 public views::ButtonListener {
+ public:
+  UserView() {
+    SetLayoutManager(new views::BoxLayout(views::BoxLayout::kVertical,
+          0, 0, 3));
+
+    ash::SystemTrayDelegate* tray = ash::Shell::GetInstance()->tray_delegate();
+    username_ = new views::Label(ASCIIToUTF16(tray->GetUserDisplayName()));
+    username_->SetFont(username_->font().DeriveFont(2));
+    username_->SetHorizontalAlignment(views::Label::ALIGN_LEFT);
+    AddChildView(username_);
+
+    email_ = new views::Label(ASCIIToUTF16(tray->GetUserEmail()));
+    email_->SetHorizontalAlignment(views::Label::ALIGN_LEFT);
+    email_->SetEnabled(false);
+    AddChildView(email_);
+
+    views::View* button_container = new views::View;
+    views::BoxLayout *layout = new
+        views::BoxLayout(views::BoxLayout::kHorizontal, 0, 5, 0);
+    layout->set_spread_blank_space(true);
+    button_container->SetLayoutManager(layout);
+
+    shutdown_ = new TrayButton(this, std::string("Shut down"));
+    signout_ = new TrayButton(this, std::string("Sign out"));
+    lock_ = new TrayButton(this, std::string("Lock"));
+    button_container->AddChildView(shutdown_);
+    button_container->AddChildView(signout_);
+    button_container->AddChildView(lock_);
+
+    AddChildView(button_container);
+  }
+
+ private:
+  // Overridden from views::ButtonListener.
+  virtual void ButtonPressed(views::Button* sender,
+                             const views::Event& event) OVERRIDE {
+    ash::SystemTrayDelegate* tray = ash::Shell::GetInstance()->tray_delegate();
+    if (sender == shutdown_)
+      tray->ShutDown();
+    else if (sender == signout_)
+      tray->SignOut();
+    else if (sender == lock_)
+      tray->LockScreen();
+  }
+
+  views::Label* username_;
+  views::Label* email_;
+
+  TrayButton* shutdown_;
+  TrayButton* signout_;
+  TrayButton* lock_;
+
+  DISALLOW_COPY_AND_ASSIGN(UserView);
+};
+
+}  // namespace
+
+namespace ash {
+namespace internal {
+
+TrayUser::TrayUser() {
+}
+
+TrayUser::~TrayUser() {
+}
+
+views::View* TrayUser::CreateTrayView() {
+  views::ImageView* avatar = new views::ImageView;
+  avatar->SetImage(ash::Shell::GetInstance()->tray_delegate()->GetUserImage());
+  avatar->SetImageSize(gfx::Size(32, 32));
+  return avatar;
+}
+
+views::View* TrayUser::CreateDefaultView() {
+  return new UserView;
+}
+
+views::View* TrayUser::CreateDetailedView() {
+  return NULL;
+}
+
+void TrayUser::DestroyTrayView() {
+}
+
+void TrayUser::DestroyDefaultView() {
+}
+
+void TrayUser::DestroyDetailedView() {
+}
+
+}  // namespace internal
+}  // namespace ash