Update avatar button to MD (part 1)

chrome/browser/ui/views/profiles/avatar_button.cc

+// Copyright 2014 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 "chrome/browser/ui/views/profiles/avatar_button.h"
+
+#include <utility>
+
+#include "chrome/app/vector_icons/vector_icons.h"
+#include "chrome/browser/browser_process.h"
+#include "chrome/browser/profiles/profile_manager.h"
+#include "chrome/browser/profiles/profiles_state.h"
+#include "chrome/browser/signin/signin_manager_factory.h"
+#include "components/signin/core/browser/signin_manager.h"
+#include "ui/gfx/color_palette.h"
+#include "ui/gfx/paint_vector_icon.h"
+
+#if defined(OS_WIN)
+#include "base/win/windows_version.h"
+#endif
+
+AvatarButton::AvatarButton(views::MenuButtonListener* listener,
+                           Profile* profile)
+    : MenuButton(base::string16(), listener, false),
+      error_controller_(this, profile),
+      profile_(profile) {
+  set_notify_action(CustomButton::NOTIFY_ON_PRESS);
+  set_triggerable_event_flags(ui::EF_LEFT_MOUSE_BUTTON |
+                              ui::EF_RIGHT_MOUSE_BUTTON);
+  set_animate_on_state_change(false);
+  SetEnabledTextColors(SK_ColorWHITE);
+  SetTextSubpixelRenderingEnabled(false);
+  SetHorizontalAlignment(gfx::ALIGN_CENTER);
+
+  g_browser_process->profile_manager()
+      ->GetProfileAttributesStorage()
+      .AddObserver(this);
+
+  // The largest text height that fits in the button. If the font list height
+  // is larger than this, it will be shrunk to match it.
+  // TODO(noms): Calculate this constant algorithmically from the button's size.
+  const int kDisplayFontHeight = 16;
+  SetFontList(
+      label()->font_list().DeriveWithHeightUpperBound(kDisplayFontHeight));
+}
+
+AvatarButton::~AvatarButton() {
+  g_browser_process->profile_manager()
+      ->GetProfileAttributesStorage()
+      .RemoveObserver(this);
+}
+
+bool AvatarButton::IsTriggerableEvent(const ui::Event& event) {
+  return event.type() == ui::ET_GESTURE_LONG_PRESS ||
+         MenuButton::IsTriggerableEvent(event);
+}
+
+void AvatarButton::OnAvatarErrorChanged() {
+  Update();
+}
+
+void AvatarButton::OnProfileAdded(const base::FilePath& profile_path) {
+  Update();
+}
+
+void AvatarButton::OnProfileWasRemoved(const base::FilePath& profile_path,
+                                       const base::string16& profile_name) {
+  // If deleting the active profile, don't bother updating the avatar
+  // button, as the browser window is being closed anyway.
+  if (profile_->GetPath() != profile_path)
+    Update();
+}
+
+void AvatarButton::OnProfileNameChanged(
+    const base::FilePath& profile_path,
+    const base::string16& old_profile_name) {
+  if (profile_->GetPath() == profile_path)
+    Update();
+}
+
+void AvatarButton::OnProfileSupervisedUserIdChanged(
+    const base::FilePath& profile_path) {
+  if (profile_->GetPath() == profile_path)
+    Update();
+}
+
+void AvatarButton::Update() {
+  ProfileAttributesStorage& storage =
+      g_browser_process->profile_manager()->GetProfileAttributesStorage();
+
+  // If we have a single local profile, then use the generic avatar
+  // button instead of the profile name. Never use the generic button if
+  // the active profile is Guest.
+  const bool use_generic_button =
+      !profile_->IsGuestSession() && storage.GetNumberOfProfiles() == 1 &&
+      !SigninManagerFactory::GetForProfile(profile_)->IsAuthenticated();
+
+  UpdateButton(use_generic_button);
+
+  PreferredSizeChanged();
+}
+
+void AvatarButton::UpdateButton(bool use_generic_button) {
+  SetText(use_generic_button
+              ? base::string16()
+              : profiles::GetAvatarButtonTextForProfile(profile_));
+
+  // If the button has no text, clear the text shadows to make sure the
+  // image is centered correctly.
+  SetTextShadows(
+      use_generic_button
+          ? gfx::ShadowValues()
+          : gfx::ShadowValues(
+                10, gfx::ShadowValue(gfx::Vector2d(), 2.0f, SK_ColorDKGRAY)));
+
+  // We want the button to resize if the new text is shorter.
+  SetMinSize(gfx::Size());
+
+  if (use_generic_button) {
+    SetImage(views::Button::STATE_NORMAL, generic_avatar_);
+  } else if (error_controller_.HasAvatarError()) {
+    SetImage(views::Button::STATE_NORMAL,
+             gfx::CreateVectorIcon(kSyncProblemIcon, 16, gfx::kGoogleRed700));
+  } else {
+    SetImage(views::Button::STATE_NORMAL, gfx::ImageSkia());
+  }
+
+  // If we are not using the generic button, then reset the spacing between
+  // the text and the possible authentication error icon.
+  const int kDefaultImageTextSpacing = 5;
+  SetImageLabelSpacing(use_generic_button ? 0 : kDefaultImageTextSpacing);
+}