chrome/browser/ui/gtk/browser_titlebar.cc

   1 // Copyright (c) 2012 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/gtk/browser_titlebar.h"
   6
   7 #include <gdk/gdkkeysyms.h>
   8 #include <gtk/gtk.h>
   9
  10 #include <string>
  11 #include <vector>
  12
  13 #include "base/command_line.h"
  14 #include "base/i18n/rtl.h"
  15 #include "base/memory/singleton.h"
  16 #include "base/prefs/pref_service.h"
  17 #include "base/strings/string_piece.h"
  18 #include "base/strings/string_tokenizer.h"
  19 #include "base/strings/utf_string_conversions.h"
  20 #include "chrome/app/chrome_command_ids.h"
  21 #include "chrome/browser/browser_process.h"
  22 #include "chrome/browser/chrome_notification_types.h"
  23 #include "chrome/browser/profiles/avatar_menu.h"
  24 #include "chrome/browser/profiles/profile.h"
  25 #include "chrome/browser/profiles/profile_info_cache.h"
  26 #include "chrome/browser/profiles/profile_manager.h"
  27 #include "chrome/browser/themes/theme_properties.h"
  28 #include "chrome/browser/ui/browser.h"
  29 #include "chrome/browser/ui/browser_commands.h"
  30 #include "chrome/browser/ui/gtk/accelerators_gtk.h"
  31 #include "chrome/browser/ui/gtk/avatar_menu_bubble_gtk.h"
  32 #include "chrome/browser/ui/gtk/avatar_menu_button_gtk.h"
  33 #include "chrome/browser/ui/gtk/browser_window_gtk.h"
  34 #include "chrome/browser/ui/gtk/custom_button.h"
  35 #if defined(USE_GCONF)
  36 #include "chrome/browser/ui/gtk/gconf_titlebar_listener.h"
  37 #endif
  38 #include "chrome/browser/ui/gtk/gtk_theme_service.h"
  39 #include "chrome/browser/ui/gtk/gtk_util.h"
  40 #include "chrome/browser/ui/gtk/menu_gtk.h"
  41 #include "chrome/browser/ui/gtk/nine_box.h"
  42 #include "chrome/browser/ui/gtk/tabs/tab_strip_gtk.h"
  43 #include "chrome/browser/ui/gtk/unity_service.h"
  44 #include "chrome/browser/ui/tabs/tab_strip_model.h"
  45 #include "chrome/browser/ui/toolbar/encoding_menu_controller.h"
  46 #include "chrome/browser/ui/toolbar/wrench_menu_model.h"
  47 #include "chrome/common/chrome_switches.h"
  48 #include "chrome/common/pref_names.h"
  49 #include "content/public/browser/notification_service.h"
  50 #include "content/public/browser/web_contents.h"
  51 #include "grit/generated_resources.h"
  52 #include "grit/theme_resources.h"
  53 #include "grit/ui_resources.h"
  54 #include "ui/base/gtk/gtk_hig_constants.h"
  55 #include "ui/base/l10n/l10n_util.h"
  56 #include "ui/base/resource/resource_bundle.h"
  57 #include "ui/base/x/active_window_watcher_x.h"
  58 #include "ui/gfx/image/image.h"
  59
  60 using content::WebContents;
  61
  62 namespace {
  63
  64 // The space above the titlebars.
  65 const int kTitlebarHeight = 14;
  66
  67 // The thickness in pixels of the tab border.
  68 const int kTabOuterThickness = 1;
  69
  70 // Amount to offset the tab images relative to the background.
  71 const int kNormalVerticalOffset = kTitlebarHeight + kTabOuterThickness;
  72
  73 // A linux specific menu item for toggling window decorations.
  74 const int kShowWindowDecorationsCommand = 200;
  75
  76 const int kAvatarBottomSpacing = 1;
  77 // There are 2 px on each side of the avatar (between the frame border and
  78 // it on the left, and between it and the tabstrip on the right).
  79 const int kAvatarSideSpacing = 2;
  80
  81 // There is a 4px gap between the icon and the title text.
  82 const int kIconTitleSpacing = 4;
  83
  84 // Padding around the icon when in app mode or popup mode.
  85 const int kAppModePaddingTop = 5;
  86 const int kAppModePaddingBottom = 4;
  87 const int kAppModePaddingLeft = 2;
  88
  89 // The left padding of the tab strip.  In Views, the tab strip has a left
  90 // margin of FrameBorderThickness + kClientEdgeThickness.  This offset is to
  91 // account for kClientEdgeThickness.
  92 const int kTabStripLeftPadding = 1;
  93
  94 // Spacing between buttons of the titlebar.
  95 const int kButtonSpacing = 2;
  96
  97 // Spacing around outside of titlebar buttons.
  98 const int kButtonOuterPadding = 2;
  99
 100 // Spacing between tabstrip and window control buttons (when the window is
 101 // maximized).
 102 const int kMaximizedTabstripPadding = 16;
 103
 104 gboolean OnMouseMoveEvent(GtkWidget* widget, GdkEventMotion* event,
 105                           BrowserWindowGtk* browser_window) {
 106   // Reset to the default mouse cursor.
 107   browser_window->ResetCustomFrameCursor();
 108   return TRUE;
 109 }
 110
 111 // Converts a GdkColor to a color_utils::HSL.
 112 color_utils::HSL GdkColorToHSL(const GdkColor* color) {
 113   color_utils::HSL hsl;
 114   color_utils::SkColorToHSL(SkColorSetRGB(color->red >> 8,
 115                                           color->green >> 8,
 116                                           color->blue >> 8), &hsl);
 117   return hsl;
 118 }
 119
 120 // Returns either |one| or |two| based on which has a greater difference in
 121 // luminosity.
 122 GdkColor PickLuminosityContrastingColor(const GdkColor* base,
 123                                         const GdkColor* one,
 124                                         const GdkColor* two) {
 125   // Convert all GdkColors to color_utils::HSLs.
 126   color_utils::HSL baseHSL = GdkColorToHSL(base);
 127   color_utils::HSL oneHSL = GdkColorToHSL(one);
 128   color_utils::HSL twoHSL = GdkColorToHSL(two);
 129   double one_difference = fabs(baseHSL.l - oneHSL.l);
 130   double two_difference = fabs(baseHSL.l - twoHSL.l);
 131
 132   // Be biased towards the first color presented.
 133   if (two_difference > one_difference + 0.1)
 134     return *two;
 135   else
 136     return *one;
 137 }
 138
 139 }  // namespace
 140
 141 ////////////////////////////////////////////////////////////////////////////////
 142 // PopupPageMenuModel
 143
 144 // A menu model that builds the contents of the menu shown for popups (when the
 145 // user clicks on the favicon) and all of its submenus.
 146 class PopupPageMenuModel : public ui::SimpleMenuModel {
 147  public:
 148   PopupPageMenuModel(ui::SimpleMenuModel::Delegate* delegate, Browser* browser);
 149   virtual ~PopupPageMenuModel() { }
 150
 151  private:
 152   void Build();
 153
 154   // Models for submenus referenced by this model. SimpleMenuModel only uses
 155   // weak references so these must be kept for the lifetime of the top-level
 156   // model.
 157   scoped_ptr<ZoomMenuModel> zoom_menu_model_;
 158   scoped_ptr<EncodingMenuModel> encoding_menu_model_;
 159   Browser* browser_;  // weak
 160
 161   DISALLOW_COPY_AND_ASSIGN(PopupPageMenuModel);
 162 };
 163
 164 PopupPageMenuModel::PopupPageMenuModel(
 165     ui::SimpleMenuModel::Delegate* delegate,
 166     Browser* browser)
 167     : ui::SimpleMenuModel(delegate), browser_(browser) {
 168   Build();
 169 }
 170
 171 void PopupPageMenuModel::Build() {
 172   AddItemWithStringId(IDC_BACK, IDS_CONTENT_CONTEXT_BACK);
 173   AddItemWithStringId(IDC_FORWARD, IDS_CONTENT_CONTEXT_FORWARD);
 174   AddItemWithStringId(IDC_RELOAD, IDS_APP_MENU_RELOAD);
 175   AddSeparator(ui::NORMAL_SEPARATOR);
 176   AddItemWithStringId(IDC_SHOW_AS_TAB, IDS_SHOW_AS_TAB);
 177   AddSeparator(ui::NORMAL_SEPARATOR);
 178   AddItemWithStringId(IDC_CUT, IDS_CUT);
 179   AddItemWithStringId(IDC_COPY, IDS_COPY);
 180   AddItemWithStringId(IDC_PASTE, IDS_PASTE);
 181   AddSeparator(ui::NORMAL_SEPARATOR);
 182   AddItemWithStringId(IDC_FIND, IDS_FIND);
 183   AddItemWithStringId(IDC_PRINT, IDS_PRINT);
 184   zoom_menu_model_.reset(new ZoomMenuModel(delegate()));
 185   AddSubMenuWithStringId(IDC_ZOOM_MENU, IDS_ZOOM_MENU, zoom_menu_model_.get());
 186
 187   encoding_menu_model_.reset(new EncodingMenuModel(browser_));
 188   AddSubMenuWithStringId(IDC_ENCODING_MENU, IDS_ENCODING_MENU,
 189                          encoding_menu_model_.get());
 190
 191   AddSeparator(ui::NORMAL_SEPARATOR);
 192   AddItemWithStringId(IDC_CLOSE_WINDOW, IDS_CLOSE);
 193 }
 194
 195 ////////////////////////////////////////////////////////////////////////////////
 196 // BrowserTitlebar
 197
 198 // static
 199 const char BrowserTitlebar::kDefaultButtonString[] = ":minimize,maximize,close";
 200
 201 BrowserTitlebar::BrowserTitlebar(BrowserWindowGtk* browser_window,
 202                                  GtkWindow* window)
 203     : browser_window_(browser_window),
 204       window_(window),
 205       container_(NULL),
 206       container_hbox_(NULL),
 207       titlebar_left_buttons_vbox_(NULL),
 208       titlebar_right_buttons_vbox_(NULL),
 209       titlebar_left_buttons_hbox_(NULL),
 210       titlebar_right_buttons_hbox_(NULL),
 211       titlebar_left_avatar_frame_(NULL),
 212       titlebar_right_avatar_frame_(NULL),
 213       titlebar_left_label_frame_(NULL),
 214       titlebar_right_label_frame_(NULL),
 215       avatar_(NULL),
 216       avatar_label_(NULL),
 217       avatar_label_bg_(NULL),
 218       top_padding_left_(NULL),
 219       top_padding_right_(NULL),
 220       titlebar_alignment_(NULL),
 221       app_mode_favicon_(NULL),
 222       app_mode_title_(NULL),
 223       using_custom_frame_(false),
 224       window_has_focus_(false),
 225       display_avatar_on_left_(false),
 226       theme_service_(NULL) {
 227 }
 228
 229 void BrowserTitlebar::Init() {
 230   // The widget hierarchy is shown below.
 231   //
 232   // +- EventBox (container_) ------------------------------------------------+
 233   // +- HBox (container_hbox_) -----------------------------------------------+
 234   // |+ VBox ---++- Algn. -++- Alignment --------------++- Algn. -++ VBox ---+|
 235   // || titlebar||titlebar ||   (titlebar_alignment_)  ||titlebar || titlebar||
 236   // || left    ||left     ||                          ||right    || right   ||
 237   // || button  ||spy      ||                          ||spy      || button  ||
 238   // || vbox    ||frame    ||+- TabStripGtk  ---------+||frame    || vbox    ||
 239   // ||         ||         || tab   tab   tabclose    |||         ||         ||
 240   // ||         ||         ||+------------------------+||         ||         ||
 241   // |+---------++---------++--------------------------++---------++---------+|
 242   // +------------------------------------------------------------------------+
 243   //
 244   // There are two vboxes on either side of |container_hbox_| because when the
 245   // desktop is GNOME, the button placement is configurable based on a metacity
 246   // gconf key. We can't just have one vbox and move it back and forth because
 247   // the gconf language allows you to place buttons on both sides of the
 248   // window.  This being Linux, I'm sure there's a bunch of people who have
 249   // already configured their window manager to do so and we don't want to get
 250   // confused when that happens. The actual contents of these vboxes are lazily
 251   // generated so they don't interfere with alignment when everything is
 252   // stuffed in the other box.
 253   //
 254   // Each vbox has the following hierarchy if it contains buttons:
 255   //
 256   // +- VBox (titlebar_{l,r}_buttons_vbox_) ---------+
 257   // |+- Fixed (top_padding_{l,r}_) ----------------+|
 258   // ||+- HBox (titlebar_{l,r}_buttons_hbox_ ------+||
 259   // ||| (buttons of a configurable layout)        |||
 260   // ||+-------------------------------------------+||
 261   // |+---------------------------------------------+|
 262   // +-----------------------------------------------+
 263   //
 264   // The two spy alignments are only allocated if this window is an incognito
 265   // window. Only one of them holds the spy image.
 266   //
 267   // If we're a popup window or in app mode, we don't display the spy guy or
 268   // the tab strip.  Instead, put an hbox in titlebar_alignment_ in place of
 269   // the tab strip.
 270   // +- Alignment (titlebar_alignment_) -----------------------------------+
 271   // |+ HBox -------------------------------------------------------------+|
 272   // ||+- TabStripGtk -++- Image ----------------++- Label --------------+||
 273   // ||| hidden        ++    (app_mode_favicon_) ||    (app_mode_title_) |||
 274   // |||               ||  favicon               ||  page title          |||
 275   // ||+---------------++------------------------++----------------------+||
 276   // |+-------------------------------------------------------------------+|
 277   // +---------------------------------------------------------------------+
 278   container_hbox_ = gtk_hbox_new(FALSE, 0);
 279
 280   container_ = gtk_event_box_new();
 281   gtk_widget_set_name(container_, "chrome-browser-titlebar");
 282   gtk_event_box_set_visible_window(GTK_EVENT_BOX(container_), FALSE);
 283   gtk_container_add(GTK_CONTAINER(container_), container_hbox_);
 284
 285   g_signal_connect(container_, "scroll-event", G_CALLBACK(OnScrollThunk), this);
 286
 287   g_signal_connect(window_, "window-state-event",
 288                    G_CALLBACK(OnWindowStateChangedThunk), this);
 289
 290   // Allocate the two button boxes on the left and right parts of the bar. These
 291   // are always allocated, but only displayed in incognito mode or when using
 292   // multiple profiles.
 293   titlebar_left_buttons_vbox_ = gtk_vbox_new(FALSE, 0);
 294   gtk_box_pack_start(GTK_BOX(container_hbox_), titlebar_left_buttons_vbox_,
 295                      FALSE, FALSE, 0);
 296   titlebar_left_avatar_frame_ = gtk_alignment_new(0.0, 0.0, 1.0, 1.0);
 297   gtk_widget_set_no_show_all(titlebar_left_avatar_frame_, TRUE);
 298   gtk_alignment_set_padding(GTK_ALIGNMENT(titlebar_left_avatar_frame_), 0,
 299       kAvatarBottomSpacing, kAvatarSideSpacing, kAvatarSideSpacing);
 300   gtk_box_pack_start(GTK_BOX(container_hbox_), titlebar_left_avatar_frame_,
 301                      FALSE, FALSE, 0);
 302
 303   titlebar_left_label_frame_ = gtk_alignment_new(0.0, 0.5, 0.0, 0.0);
 304   gtk_widget_set_no_show_all(titlebar_left_label_frame_, TRUE);
 305   gtk_alignment_set_padding(GTK_ALIGNMENT(titlebar_left_label_frame_), 0,
 306       kAvatarBottomSpacing, kAvatarSideSpacing, kAvatarSideSpacing);
 307   gtk_box_pack_start(GTK_BOX(container_hbox_), titlebar_left_label_frame_,
 308                    FALSE, FALSE, 0);
 309
 310   titlebar_right_avatar_frame_ = gtk_alignment_new(0.0, 0.0, 1.0, 1.0);
 311   gtk_widget_set_no_show_all(titlebar_right_avatar_frame_, TRUE);
 312   gtk_alignment_set_padding(GTK_ALIGNMENT(titlebar_right_avatar_frame_), 0,
 313       kAvatarBottomSpacing, kAvatarSideSpacing, kAvatarSideSpacing);
 314   gtk_box_pack_end(GTK_BOX(container_hbox_), titlebar_right_avatar_frame_,
 315                    FALSE, FALSE, 0);
 316
 317   titlebar_right_label_frame_ = gtk_alignment_new(0.0, 0.5, 0.0, 0.0);
 318   gtk_widget_set_no_show_all(titlebar_right_label_frame_, TRUE);
 319   gtk_alignment_set_padding(GTK_ALIGNMENT(titlebar_right_label_frame_), 0,
 320       kAvatarBottomSpacing, kAvatarSideSpacing, kAvatarSideSpacing);
 321   gtk_box_pack_end(GTK_BOX(container_hbox_), titlebar_right_label_frame_,
 322                    FALSE, FALSE, 0);
 323
 324   titlebar_right_buttons_vbox_ = gtk_vbox_new(FALSE, 0);
 325   gtk_box_pack_end(GTK_BOX(container_hbox_), titlebar_right_buttons_vbox_,
 326                    FALSE, FALSE, 0);
 327
 328   // Create the Avatar button and listen for notifications. It must always be
 329   // created because a new profile can be added at any time.
 330   avatar_button_.reset(new AvatarMenuButtonGtk(browser_window_->browser()));
 331
 332   registrar_.Add(this, chrome::NOTIFICATION_PROFILE_CACHED_INFO_CHANGED,
 333                  content::NotificationService::AllSources());
 334
 335 #if defined(USE_GCONF)
 336   // Either read the gconf database and register for updates (on GNOME), or use
 337   // the default value (anywhere else).
 338   GConfTitlebarListener::GetInstance()->SetTitlebarButtons(this);
 339 #else
 340   BuildButtons(kDefaultButtonString);
 341 #endif
 342
 343   UpdateAvatar();
 344
 345   // We use an alignment to control the titlebar height.
 346   titlebar_alignment_ = gtk_alignment_new(0.0, 0.0, 1.0, 1.0);
 347   if (browser_window_->browser()->is_type_tabbed()) {
 348     gtk_box_pack_start(GTK_BOX(container_hbox_), titlebar_alignment_, TRUE,
 349                        TRUE, 0);
 350
 351     // Put the tab strip in the titlebar.
 352     gtk_container_add(GTK_CONTAINER(titlebar_alignment_),
 353                       browser_window_->tabstrip()->widget());
 354   } else {
 355     // App mode specific widgets.
 356     gtk_box_pack_start(GTK_BOX(container_hbox_), titlebar_alignment_, TRUE,
 357                        TRUE, 0);
 358     GtkWidget* app_mode_hbox = gtk_hbox_new(FALSE, kIconTitleSpacing);
 359     gtk_container_add(GTK_CONTAINER(titlebar_alignment_), app_mode_hbox);
 360
 361     // Put the tab strip in the hbox even though we don't show it.  Sometimes
 362     // we need the position of the tab strip so make sure it's in our widget
 363     // hierarchy.
 364     gtk_box_pack_start(GTK_BOX(app_mode_hbox),
 365         browser_window_->tabstrip()->widget(), FALSE, FALSE, 0);
 366
 367     GtkWidget* favicon_event_box = gtk_event_box_new();
 368     gtk_event_box_set_visible_window(GTK_EVENT_BOX(favicon_event_box), FALSE);
 369     g_signal_connect(favicon_event_box, "button-press-event",
 370                      G_CALLBACK(OnFaviconMenuButtonPressedThunk), this);
 371     gtk_box_pack_start(GTK_BOX(app_mode_hbox), favicon_event_box, FALSE,
 372                        FALSE, 0);
 373     // We use the app logo as a placeholder image so the title doesn't jump
 374     // around.
 375     ui::ResourceBundle& rb = ui::ResourceBundle::GetSharedInstance();
 376     app_mode_favicon_ = gtk_image_new_from_pixbuf(rb.GetNativeImageNamed(
 377         IDR_PRODUCT_LOGO_16, ui::ResourceBundle::RTL_ENABLED).ToGdkPixbuf());
 378     g_object_set_data(G_OBJECT(app_mode_favicon_), "left-align-popup",
 379                       reinterpret_cast<void*>(true));
 380     gtk_container_add(GTK_CONTAINER(favicon_event_box), app_mode_favicon_);
 381
 382     app_mode_title_ = gtk_label_new(NULL);
 383     gtk_label_set_ellipsize(GTK_LABEL(app_mode_title_), PANGO_ELLIPSIZE_END);
 384     gtk_misc_set_alignment(GTK_MISC(app_mode_title_), 0.0, 0.5);
 385     gtk_box_pack_start(GTK_BOX(app_mode_hbox), app_mode_title_, TRUE, TRUE,
 386                        0);
 387
 388     UpdateTitleAndIcon();
 389   }
 390
 391   theme_service_ = GtkThemeService::GetFrom(
 392       browser_window_->browser()->profile());
 393   registrar_.Add(this, chrome::NOTIFICATION_BROWSER_THEME_CHANGED,
 394                  content::Source<ThemeService>(theme_service_));
 395   theme_service_->InitThemesFor(this);
 396
 397   gtk_widget_show_all(container_);
 398
 399   ui::ActiveWindowWatcherX::AddObserver(this);
 400 }
 401
 402 BrowserTitlebar::~BrowserTitlebar() {
 403   ui::ActiveWindowWatcherX::RemoveObserver(this);
 404 #if defined(USE_GCONF)
 405   GConfTitlebarListener::GetInstance()->RemoveObserver(this);
 406 #endif
 407 }
 408
 409 void BrowserTitlebar::BuildButtons(const std::string& button_string) {
 410   // Clear out all previous data.
 411   close_button_.reset();
 412   restore_button_.reset();
 413   maximize_button_.reset();
 414   minimize_button_.reset();
 415   gtk_util::RemoveAllChildren(titlebar_left_buttons_vbox_);
 416   gtk_util::RemoveAllChildren(titlebar_right_buttons_vbox_);
 417   titlebar_left_buttons_hbox_ = NULL;
 418   titlebar_right_buttons_hbox_ = NULL;
 419   top_padding_left_ = NULL;
 420   top_padding_right_ = NULL;
 421
 422   bool left_side = true;
 423   base::StringTokenizer tokenizer(button_string, ":,");
 424   tokenizer.set_options(base::StringTokenizer::RETURN_DELIMS);
 425   int left_count = 0;
 426   int right_count = 0;
 427   while (tokenizer.GetNext()) {
 428     if (tokenizer.token_is_delim()) {
 429       if (*tokenizer.token_begin() == ':')
 430         left_side = false;
 431     } else {
 432       base::StringPiece token = tokenizer.token_piece();
 433       if (BuildButton(token.as_string(), left_side))
 434         (left_side ? left_count : right_count)++;
 435     }
 436   }
 437
 438   // If we are in incognito mode, add the spy guy to either the end of the left
 439   // or the beginning of the right depending on which side has fewer buttons.
 440   display_avatar_on_left_ = right_count > left_count;
 441
 442   // Now show the correct widgets in the two hierarchies.
 443   if (using_custom_frame_) {
 444     gtk_widget_show_all(titlebar_left_buttons_vbox_);
 445     gtk_widget_show_all(titlebar_right_buttons_vbox_);
 446   }
 447   UpdateMaximizeRestoreVisibility();
 448 }
 449
 450 bool BrowserTitlebar::BuildButton(const std::string& button_token,
 451                                   bool left_side) {
 452   if (button_token == "minimize") {
 453     minimize_button_.reset(CreateTitlebarButton("minimize", left_side));
 454
 455     gtk_widget_size_request(minimize_button_->widget(),
 456                             &minimize_button_req_);
 457     return true;
 458   } else if (button_token == "maximize") {
 459     restore_button_.reset(CreateTitlebarButton("unmaximize", left_side));
 460     maximize_button_.reset(CreateTitlebarButton("maximize", left_side));
 461
 462     gtk_util::SetButtonClickableByMouseButtons(maximize_button_->widget(),
 463                                                true, true, true);
 464     gtk_widget_size_request(restore_button_->widget(),
 465                             &restore_button_req_);
 466     return true;
 467   } else if (button_token == "close") {
 468     close_button_.reset(CreateTitlebarButton("close", left_side));
 469     close_button_->set_flipped(left_side);
 470
 471     gtk_widget_size_request(close_button_->widget(), &close_button_req_);
 472     return true;
 473   }
 474   // Ignore any other values like "pin" since we don't have images for
 475   // those.
 476   return false;
 477 }
 478
 479 GtkWidget* BrowserTitlebar::GetButtonHBox(bool left_side) {
 480   if (left_side && titlebar_left_buttons_hbox_)
 481     return titlebar_left_buttons_hbox_;
 482   else if (!left_side && titlebar_right_buttons_hbox_)
 483     return titlebar_right_buttons_hbox_;
 484
 485   // We put the min/max/restore/close buttons in a vbox so they are top aligned
 486   // (up to padding) and don't vertically stretch.
 487   GtkWidget* vbox = left_side ? titlebar_left_buttons_vbox_ :
 488                     titlebar_right_buttons_vbox_;
 489
 490   GtkWidget* top_padding = gtk_fixed_new();
 491   gtk_widget_set_size_request(top_padding, -1, kButtonOuterPadding);
 492   gtk_box_pack_start(GTK_BOX(vbox), top_padding, FALSE, FALSE, 0);
 493
 494   GtkWidget* buttons_hbox = gtk_hbox_new(FALSE, kButtonSpacing);
 495   gtk_box_pack_start(GTK_BOX(vbox), buttons_hbox, FALSE, FALSE, 0);
 496
 497   if (left_side) {
 498     titlebar_left_buttons_hbox_ = buttons_hbox;
 499     top_padding_left_ = top_padding;
 500   } else {
 501     titlebar_right_buttons_hbox_ = buttons_hbox;
 502     top_padding_right_ = top_padding;
 503   }
 504
 505   return buttons_hbox;
 506 }
 507
 508 CustomDrawButton* BrowserTitlebar::CreateTitlebarButton(
 509     const std::string& button_name, bool left_side) {
 510   int normal_image_id;
 511   int pressed_image_id;
 512   int hover_image_id;
 513   int tooltip_id;
 514   GetButtonResources(button_name, &normal_image_id, &pressed_image_id,
 515                      &hover_image_id, &tooltip_id);
 516
 517   CustomDrawButton* button = new CustomDrawButton(normal_image_id,
 518                                                   pressed_image_id,
 519                                                   hover_image_id,
 520                                                   0);
 521   gtk_widget_add_events(GTK_WIDGET(button->widget()), GDK_POINTER_MOTION_MASK);
 522   g_signal_connect(button->widget(), "clicked",
 523                    G_CALLBACK(OnButtonClickedThunk), this);
 524   g_signal_connect(button->widget(), "motion-notify-event",
 525                    G_CALLBACK(OnMouseMoveEvent), browser_window_);
 526
 527   std::string localized_tooltip = l10n_util::GetStringUTF8(tooltip_id);
 528   gtk_widget_set_tooltip_text(button->widget(),
 529                               localized_tooltip.c_str());
 530
 531   GtkWidget* box = GetButtonHBox(left_side);
 532   gtk_box_pack_start(GTK_BOX(box), button->widget(), FALSE, FALSE, 0);
 533   return button;
 534 }
 535
 536 void BrowserTitlebar::GetButtonResources(const std::string& button_name,
 537                                          int* normal_image_id,
 538                                          int* pressed_image_id,
 539                                          int* hover_image_id,
 540                                          int* tooltip_id) const {
 541   if (button_name == "close") {
 542     *normal_image_id = IDR_CLOSE;
 543     *pressed_image_id = IDR_CLOSE_P;
 544     *hover_image_id = IDR_CLOSE_H;
 545     *tooltip_id = IDS_XPFRAME_CLOSE_TOOLTIP;
 546   } else if (button_name == "minimize") {
 547     *normal_image_id = IDR_MINIMIZE;
 548     *pressed_image_id = IDR_MINIMIZE_P;
 549     *hover_image_id = IDR_MINIMIZE_H;
 550     *tooltip_id = IDS_XPFRAME_MINIMIZE_TOOLTIP;
 551   } else if (button_name == "maximize") {
 552     *normal_image_id = IDR_MAXIMIZE;
 553     *pressed_image_id = IDR_MAXIMIZE_P;
 554     *hover_image_id = IDR_MAXIMIZE_H;
 555     *tooltip_id = IDS_XPFRAME_MAXIMIZE_TOOLTIP;
 556   } else if (button_name == "unmaximize") {
 557     *normal_image_id = IDR_RESTORE;
 558     *pressed_image_id = IDR_RESTORE_P;
 559     *hover_image_id = IDR_RESTORE_H;
 560     *tooltip_id = IDS_XPFRAME_RESTORE_TOOLTIP;
 561   }
 562 }
 563
 564 void BrowserTitlebar::UpdateButtonBackground(CustomDrawButton* button) {
 565   SkColor color = theme_service_->GetColor(
 566       ThemeProperties::COLOR_BUTTON_BACKGROUND);
 567   SkBitmap background = theme_service_->GetImageNamed(
 568       IDR_THEME_WINDOW_CONTROL_BACKGROUND).AsBitmap();
 569
 570   // TODO(erg): For now, we just use a completely black mask and we can get
 571   // away with this in the short term because our buttons are rectangles. We
 572   // should get Glen to make properly hinted masks that match our min/max/close
 573   // buttons (which have some odd alpha blending around the
 574   // edges). http://crbug.com/103661
 575   SkBitmap mask;
 576   mask.setConfig(SkBitmap::kARGB_8888_Config,
 577                  button->SurfaceWidth(), button->SurfaceHeight(), 0);
 578   mask.allocPixels();
 579   mask.eraseColor(SK_ColorBLACK);
 580
 581   button->SetBackground(color, background, mask);
 582 }
 583
 584 void BrowserTitlebar::UpdateCustomFrame(bool use_custom_frame) {
 585   using_custom_frame_ = use_custom_frame;
 586   if (!use_custom_frame ||
 587       (browser_window_->IsMaximized() && unity::IsRunning())) {
 588     if (titlebar_left_buttons_vbox_)
 589       gtk_widget_hide(titlebar_left_buttons_vbox_);
 590     if (titlebar_right_buttons_vbox_)
 591       gtk_widget_hide(titlebar_right_buttons_vbox_);
 592   } else {
 593     if (titlebar_left_buttons_vbox_)
 594       gtk_widget_show_all(titlebar_left_buttons_vbox_);
 595     if (titlebar_right_buttons_vbox_)
 596       gtk_widget_show_all(titlebar_right_buttons_vbox_);
 597   }
 598   UpdateTitlebarAlignment();
 599   UpdateMaximizeRestoreVisibility();
 600 }
 601
 602 void BrowserTitlebar::UpdateTitleAndIcon() {
 603   if (!app_mode_title_)
 604     return;
 605
 606   // Get the page title and elide it to the available space.
 607   base::string16 title =
 608       browser_window_->browser()->GetWindowTitleForCurrentTab();
 609   gtk_label_set_text(GTK_LABEL(app_mode_title_),
 610                      base::UTF16ToUTF8(title).c_str());
 611
 612   if (browser_window_->browser()->is_app()) {
 613     switch (browser_window_->browser()->type()) {
 614       case Browser::TYPE_POPUP: {
 615         // Update the system app icon.  We don't need to update the icon in the
 616         // top left of the custom frame, that will get updated when the
 617         // throbber is updated.
 618         Profile* profile = browser_window_->browser()->profile();
 619         gfx::Image icon = browser_window_->browser()->GetCurrentPageIcon();
 620         if (icon.IsEmpty()) {
 621           gtk_util::SetWindowIcon(window_, profile);
 622         } else {
 623           gtk_util::SetWindowIcon(window_, profile, icon.ToGdkPixbuf());
 624         }
 625         break;
 626       }
 627       case Browser::TYPE_TABBED: {
 628         NOTREACHED() << "We should never have a tabbed app window.";
 629         break;
 630       }
 631     }
 632   }
 633 }
 634
 635 void BrowserTitlebar::UpdateThrobber(WebContents* web_contents) {
 636   DCHECK(app_mode_favicon_);
 637
 638   if (web_contents && web_contents->IsLoading()) {
 639     GdkPixbuf* icon_pixbuf =
 640         throbber_.GetNextFrame(web_contents->IsWaitingForResponse());
 641     gtk_image_set_from_pixbuf(GTK_IMAGE(app_mode_favicon_), icon_pixbuf);
 642   } else {
 643     ui::ResourceBundle& rb = ui::ResourceBundle::GetSharedInstance();
 644
 645     // Note: we want to exclude the application popup/panel window.
 646     if ((browser_window_->browser()->is_app() &&
 647         !browser_window_->browser()->is_type_tabbed()) ||
 648         browser_window_->browser()->is_type_popup()) {
 649       gfx::Image icon = browser_window_->browser()->GetCurrentPageIcon();
 650       if (icon.IsEmpty()) {
 651         // Fallback to the Chromium icon if the page has no icon.
 652         gtk_image_set_from_pixbuf(GTK_IMAGE(app_mode_favicon_),
 653             rb.GetNativeImageNamed(IDR_PRODUCT_LOGO_16).ToGdkPixbuf());
 654       } else {
 655         gtk_image_set_from_pixbuf(GTK_IMAGE(app_mode_favicon_),
 656                                   icon.ToGdkPixbuf());
 657       }
 658     } else {
 659       gtk_image_set_from_pixbuf(GTK_IMAGE(app_mode_favicon_),
 660           rb.GetNativeImageNamed(IDR_PRODUCT_LOGO_16).ToGdkPixbuf());
 661     }
 662     throbber_.Reset();
 663   }
 664 }
 665
 666 void BrowserTitlebar::UpdateTitlebarAlignment() {
 667   if (browser_window_->browser()->is_type_tabbed()) {
 668     int top_padding = 0;
 669     int side_padding = 0;
 670     int vertical_offset = kNormalVerticalOffset;
 671
 672     if (using_custom_frame_) {
 673       if (!browser_window_->IsMaximized()) {
 674         top_padding = kTitlebarHeight;
 675       } else if (using_custom_frame_ && browser_window_->IsMaximized()) {
 676         vertical_offset = 0;
 677         if (!unity::IsRunning())
 678           side_padding = kMaximizedTabstripPadding;
 679       }
 680     }
 681
 682     int right_padding = 0;
 683     int left_padding = kTabStripLeftPadding;
 684     if (titlebar_right_buttons_hbox_)
 685       right_padding = side_padding;
 686     if (titlebar_left_buttons_hbox_)
 687       left_padding = side_padding;
 688
 689     gtk_alignment_set_padding(GTK_ALIGNMENT(titlebar_alignment_),
 690                               top_padding, 0,
 691                               left_padding, right_padding);
 692     browser_window_->tabstrip()->SetVerticalOffset(vertical_offset);
 693   } else {
 694     if (using_custom_frame_ && !browser_window_->IsFullscreen()) {
 695       gtk_alignment_set_padding(GTK_ALIGNMENT(titlebar_alignment_),
 696           kAppModePaddingTop, kAppModePaddingBottom, kAppModePaddingLeft, 0);
 697       gtk_widget_show(titlebar_alignment_);
 698     } else {
 699       gtk_widget_hide(titlebar_alignment_);
 700     }
 701   }
 702
 703   // Resize the buttons so that the clickable area extends all the way to the
 704   // edge of the browser window.
 705   GtkRequisition close_button_req = close_button_req_;
 706   GtkRequisition minimize_button_req = minimize_button_req_;
 707   GtkRequisition restore_button_req = restore_button_req_;
 708   if (using_custom_frame_ && browser_window_->IsMaximized()) {
 709     close_button_req.width += kButtonOuterPadding;
 710     close_button_req.height += kButtonOuterPadding;
 711     minimize_button_req.height += kButtonOuterPadding;
 712     restore_button_req.height += kButtonOuterPadding;
 713     if (top_padding_left_)
 714       gtk_widget_hide(top_padding_left_);
 715     if (top_padding_right_)
 716       gtk_widget_hide(top_padding_right_);
 717   } else {
 718     if (top_padding_left_)
 719       gtk_widget_show(top_padding_left_);
 720     if (top_padding_right_)
 721       gtk_widget_show(top_padding_right_);
 722   }
 723   if (close_button_.get()) {
 724     gtk_widget_set_size_request(close_button_->widget(),
 725                                 close_button_req.width,
 726                                 close_button_req.height);
 727   }
 728   if (minimize_button_.get()) {
 729     gtk_widget_set_size_request(minimize_button_->widget(),
 730                                 minimize_button_req.width,
 731                                 minimize_button_req.height);
 732   }
 733   if (maximize_button_.get()) {
 734     gtk_widget_set_size_request(restore_button_->widget(),
 735                                 restore_button_req.width,
 736                                 restore_button_req.height);
 737   }
 738 }
 739
 740 void BrowserTitlebar::UpdateTextColor() {
 741   if (!app_mode_title_)
 742     return;
 743
 744   if (theme_service_ && theme_service_->UsingNativeTheme()) {
 745     // We don't really have any good options here.
 746     //
 747     // Colors from window manager themes aren't exposed in GTK; the window
 748     // manager is a separate component and when there is information sharing
 749     // (in the case of metacity), it's one way where the window manager reads
 750     // data from the GTK theme (which allows us to do a decent job with
 751     // picking the frame color).
 752     //
 753     // We probably won't match in the majority of cases, but we can at the
 754     // very least make things legible. The default metacity and xfwm themes
 755     // on ubuntu have white text hardcoded. Determine whether black or white
 756     // has more luminosity contrast and then set that color as the text
 757     // color.
 758     GdkColor frame_color;
 759     if (window_has_focus_) {
 760       frame_color = theme_service_->GetGdkColor(
 761           ThemeProperties::COLOR_FRAME);
 762     } else {
 763       frame_color = theme_service_->GetGdkColor(
 764           ThemeProperties::COLOR_FRAME_INACTIVE);
 765     }
 766     GdkColor text_color = PickLuminosityContrastingColor(
 767         &frame_color, &ui::kGdkWhite, &ui::kGdkBlack);
 768     gtk_util::SetLabelColor(app_mode_title_, &text_color);
 769   } else {
 770     gtk_util::SetLabelColor(app_mode_title_, &ui::kGdkWhite);
 771   }
 772 }
 773
 774 void BrowserTitlebar::UpdateAvatarLabel() {
 775   if (theme_service_ && avatar_label_) {
 776     GdkColor text_color =
 777         theme_service_->GetGdkColor(ThemeProperties::COLOR_MANAGED_USER_LABEL);
 778     GdkColor label_background = theme_service_->GetGdkColor(
 779         ThemeProperties::COLOR_MANAGED_USER_LABEL_BACKGROUND);
 780     gtk_util::SetLabelColor(avatar_label_, &text_color);
 781     gtk_widget_modify_bg(
 782         GTK_WIDGET(avatar_label_bg_), GTK_STATE_NORMAL, &label_background);
 783     char* markup = g_markup_printf_escaped(
 784         "<span size='small'>%s</span>",
 785         l10n_util::GetStringUTF8(IDS_MANAGED_USER_AVATAR_LABEL).c_str());
 786     gtk_label_set_markup(GTK_LABEL(avatar_label_), markup);
 787     g_free(markup);
 788   }
 789 }
 790
 791 void BrowserTitlebar::UpdateAvatar() {
 792   // Remove previous state.
 793   gtk_util::RemoveAllChildren(titlebar_left_avatar_frame_);
 794   gtk_util::RemoveAllChildren(titlebar_right_avatar_frame_);
 795   gtk_util::RemoveAllChildren(titlebar_left_label_frame_);
 796   gtk_util::RemoveAllChildren(titlebar_right_label_frame_);
 797
 798   if (!ShouldDisplayAvatar())
 799     return;
 800
 801   if (!avatar_) {
 802     if (IsOffTheRecord()) {
 803       ui::ResourceBundle& rb = ui::ResourceBundle::GetSharedInstance();
 804       gfx::Image avatar_image =
 805           rb.GetNativeImageNamed(IDR_OTR_ICON, ui::ResourceBundle::RTL_ENABLED);
 806       avatar_ = gtk_image_new_from_pixbuf(avatar_image.ToGdkPixbuf());
 807       gtk_misc_set_alignment(GTK_MISC(avatar_), 0.0, 1.0);
 808       gtk_widget_set_size_request(avatar_, -1, 0);
 809     } else {
 810       // Use a clickable avatar.
 811       avatar_ = avatar_button_->widget();
 812     }
 813   }
 814
 815   gtk_widget_show_all(avatar_);
 816
 817   Profile* profile = browser_window_->browser()->profile();
 818   if (profile->IsManaged()) {
 819     avatar_label_ = gtk_label_new(NULL);
 820     gtk_misc_set_padding(GTK_MISC(avatar_label_), 10, 2);
 821     avatar_label_bg_ = gtk_event_box_new();
 822     gtk_container_add(GTK_CONTAINER(avatar_label_bg_), avatar_label_);
 823     g_signal_connect(avatar_label_bg_, "button-press-event",
 824                      G_CALLBACK(OnAvatarLabelButtonPressedThunk), this);
 825     UpdateAvatarLabel();
 826     gtk_widget_show(avatar_label_bg_);
 827     gtk_widget_show(avatar_label_);
 828     if (display_avatar_on_left_) {
 829       gtk_container_add(GTK_CONTAINER(titlebar_left_label_frame_),
 830                         avatar_label_bg_);
 831       gtk_widget_show(titlebar_left_label_frame_);
 832       gtk_widget_hide(titlebar_right_label_frame_);
 833     } else {
 834       gtk_container_add(GTK_CONTAINER(titlebar_right_label_frame_),
 835                         avatar_label_bg_);
 836       gtk_widget_show(titlebar_right_label_frame_);
 837       gtk_widget_hide(titlebar_left_label_frame_);
 838     }
 839   }
 840
 841   if (display_avatar_on_left_) {
 842     gtk_container_add(GTK_CONTAINER(titlebar_left_avatar_frame_), avatar_);
 843     gtk_widget_show(titlebar_left_avatar_frame_);
 844     gtk_widget_hide(titlebar_right_avatar_frame_);
 845   } else {
 846     gtk_container_add(GTK_CONTAINER(titlebar_right_avatar_frame_), avatar_);
 847     gtk_widget_show(titlebar_right_avatar_frame_);
 848     gtk_widget_hide(titlebar_left_avatar_frame_);
 849   }
 850
 851   if (IsOffTheRecord())
 852     return;
 853
 854   bool is_gaia_picture = false;
 855   gfx::Image avatar;
 856   ProfileInfoCache& cache =
 857       g_browser_process->profile_manager()->GetProfileInfoCache();
 858   size_t index = cache.GetIndexOfProfileWithPath(profile->GetPath());
 859   if (index == std::string::npos)
 860     return;
 861
 862   is_gaia_picture =
 863       cache.IsUsingGAIAPictureOfProfileAtIndex(index) &&
 864       cache.GetGAIAPictureOfProfileAtIndex(index);
 865   avatar = cache.GetAvatarIconOfProfileAtIndex(index);
 866   avatar_button_->SetIcon(avatar, is_gaia_picture);
 867   avatar_button_->set_menu_frame_style(display_avatar_on_left_ ?
 868       BubbleGtk::ANCHOR_TOP_LEFT : BubbleGtk::ANCHOR_TOP_RIGHT);
 869 }
 870
 871 void BrowserTitlebar::MaximizeButtonClicked() {
 872   GdkEvent* event = gtk_get_current_event();
 873   if (event->button.button == 1) {
 874     gtk_window_maximize(window_);
 875   } else {
 876     GtkWidget* widget = GTK_WIDGET(window_);
 877     GdkScreen* screen = gtk_widget_get_screen(widget);
 878     gint monitor = gdk_screen_get_monitor_at_window(
 879         screen, gtk_widget_get_window(widget));
 880     GdkRectangle screen_rect;
 881     gdk_screen_get_monitor_geometry(screen, monitor, &screen_rect);
 882
 883     gint x, y;
 884     gtk_window_get_position(window_, &x, &y);
 885
 886     GtkAllocation allocation;
 887     gtk_widget_get_allocation(widget, &allocation);
 888     gint width = allocation.width;
 889     gint height = allocation.height;
 890
 891     if (event->button.button == 3) {
 892       x = 0;
 893       width = screen_rect.width;
 894     } else if (event->button.button == 2) {
 895       y = 0;
 896       height = screen_rect.height;
 897     }
 898
 899     browser_window_->SetBounds(gfx::Rect(x, y, width, height));
 900   }
 901   gdk_event_free(event);
 902 }
 903
 904 void BrowserTitlebar::UpdateMaximizeRestoreVisibility() {
 905   if (maximize_button_.get()) {
 906     if (browser_window_->IsMaximized()) {
 907       gtk_widget_hide(maximize_button_->widget());
 908       gtk_widget_show(restore_button_->widget());
 909     } else {
 910       gtk_widget_hide(restore_button_->widget());
 911       gtk_widget_show(maximize_button_->widget());
 912     }
 913   }
 914 }
 915
 916 gboolean BrowserTitlebar::OnWindowStateChanged(GtkWindow* window,
 917                                                GdkEventWindowState* event) {
 918   UpdateMaximizeRestoreVisibility();
 919   UpdateTitlebarAlignment();
 920   UpdateTextColor();
 921   return FALSE;
 922 }
 923
 924 gboolean BrowserTitlebar::OnScroll(GtkWidget* widget, GdkEventScroll* event) {
 925   Browser* browser = browser_window_->browser();
 926   int index = browser->tab_strip_model()->active_index();
 927   if (event->direction == GDK_SCROLL_LEFT ||
 928       event->direction == GDK_SCROLL_UP) {
 929     if (index != 0)
 930       chrome::SelectPreviousTab(browser);
 931   } else if (index + 1 < browser->tab_strip_model()->count()) {
 932     chrome::SelectNextTab(browser);
 933   }
 934   return TRUE;
 935 }
 936
 937 void BrowserTitlebar::OnButtonClicked(GtkWidget* button) {
 938   if (close_button_.get() && close_button_->widget() == button) {
 939     browser_window_->Close();
 940   } else if (restore_button_.get() && restore_button_->widget() == button) {
 941     browser_window_->UnMaximize();
 942   } else if (maximize_button_.get() && maximize_button_->widget() == button) {
 943     MaximizeButtonClicked();
 944   } else if (minimize_button_.get() && minimize_button_->widget() == button) {
 945     gtk_window_iconify(window_);
 946   }
 947 }
 948
 949 gboolean BrowserTitlebar::OnFaviconMenuButtonPressed(GtkWidget* widget,
 950                                                      GdkEventButton* event) {
 951   if (event->button != 1)
 952     return FALSE;
 953
 954   if (!favicon_menu_model_.get()) {
 955     favicon_menu_model_.reset(
 956         new PopupPageMenuModel(this, browser_window_->browser()));
 957
 958     favicon_menu_.reset(new MenuGtk(NULL, favicon_menu_model_.get()));
 959   }
 960
 961   favicon_menu_->PopupForWidget(app_mode_favicon_, event->button, event->time);
 962
 963   return TRUE;
 964 }
 965
 966 gboolean BrowserTitlebar::OnAvatarLabelButtonPressed(GtkWidget* widget,
 967                                                      GdkEventButton* event) {
 968   if (event->button != 1)
 969     return FALSE;
 970
 971   // Show the avatar menu bubble with the upward arrow at the x position where
 972   // the user has clicked.
 973   gfx::Rect rect = gtk_util::WidgetBounds(widget);
 974   rect.set_x(event->x);
 975   rect.set_width(0);
 976   new AvatarMenuBubbleGtk(
 977       browser_window_->browser(), widget, BubbleGtk::ANCHOR_TOP_RIGHT, &rect);
 978   return TRUE;
 979 }
 980
 981 void BrowserTitlebar::ShowContextMenu(GdkEventButton* event) {
 982   if (!context_menu_.get()) {
 983     context_menu_model_.reset(new ContextMenuModel(this));
 984     context_menu_.reset(new MenuGtk(NULL, context_menu_model_.get()));
 985   }
 986
 987   context_menu_->PopupAsContext(gfx::Point(event->x_root, event->y_root),
 988                                 event->time);
 989 }
 990
 991 bool BrowserTitlebar::IsCommandIdEnabled(int command_id) const {
 992   if (command_id == kShowWindowDecorationsCommand)
 993     return true;
 994
 995   return chrome::IsCommandEnabled(browser_window_->browser(), command_id);
 996 }
 997
 998 bool BrowserTitlebar::IsCommandIdChecked(int command_id) const {
 999   if (command_id == kShowWindowDecorationsCommand) {
1000     PrefService* prefs = browser_window_->browser()->profile()->GetPrefs();
1001     return !prefs->GetBoolean(prefs::kUseCustomChromeFrame);
1002   }
1003
1004   EncodingMenuController controller;
1005   if (controller.DoesCommandBelongToEncodingMenu(command_id)) {
1006     WebContents* web_contents =
1007         browser_window_->browser()->tab_strip_model()->GetActiveWebContents();
1008     if (web_contents) {
1009       return controller.IsItemChecked(browser_window_->browser()->profile(),
1010                                       web_contents->GetEncoding(),
1011                                       command_id);
1012     }
1013     return false;
1014   }
1015
1016   NOTREACHED();
1017   return false;
1018 }
1019
1020 void BrowserTitlebar::ExecuteCommand(int command_id, int event_flags) {
1021   if (command_id == kShowWindowDecorationsCommand) {
1022     PrefService* prefs = browser_window_->browser()->profile()->GetPrefs();
1023     prefs->SetBoolean(prefs::kUseCustomChromeFrame,
1024                   !prefs->GetBoolean(prefs::kUseCustomChromeFrame));
1025     return;
1026   }
1027
1028   chrome::ExecuteCommand(browser_window_->browser(), command_id);
1029 }
1030
1031 bool BrowserTitlebar::GetAcceleratorForCommandId(
1032     int command_id,
1033     ui::Accelerator* out_accelerator) {
1034   const ui::Accelerator* accelerator =
1035       AcceleratorsGtk::GetInstance()->GetPrimaryAcceleratorForCommand(
1036           command_id);
1037   if (!accelerator)
1038     return false;
1039   *out_accelerator = *accelerator;
1040   return true;
1041 }
1042
1043 void BrowserTitlebar::Observe(int type,
1044                               const content::NotificationSource& source,
1045                               const content::NotificationDetails& details) {
1046   switch (type) {
1047     case chrome::NOTIFICATION_BROWSER_THEME_CHANGED: {
1048       UpdateTextColor();
1049       UpdateAvatarLabel();
1050
1051       if (minimize_button_.get())
1052         UpdateButtonBackground(minimize_button_.get());
1053       if (maximize_button_.get())
1054         UpdateButtonBackground(maximize_button_.get());
1055       if (restore_button_.get())
1056         UpdateButtonBackground(restore_button_.get());
1057       if (close_button_.get())
1058         UpdateButtonBackground(close_button_.get());
1059       break;
1060     }
1061
1062     case chrome::NOTIFICATION_PROFILE_CACHED_INFO_CHANGED:
1063       if (!IsOffTheRecord())
1064         UpdateAvatar();
1065       break;
1066
1067     default:
1068       NOTREACHED();
1069   }
1070 }
1071
1072 void BrowserTitlebar::ActiveWindowChanged(GdkWindow* active_window) {
1073   // Can be called during shutdown; BrowserWindowGtk will set our |window_|
1074   // to NULL during that time.
1075   if (!window_)
1076     return;
1077
1078   window_has_focus_ =
1079       gtk_widget_get_window(GTK_WIDGET(window_)) == active_window;
1080   UpdateTextColor();
1081 }
1082
1083 bool BrowserTitlebar::ShouldDisplayAvatar() {
1084   if (IsOffTheRecord())
1085     return true;
1086
1087   if (!browser_window_->browser()->is_type_tabbed())
1088     return false;
1089
1090   return AvatarMenu::ShouldShowAvatarMenu();
1091 }
1092
1093 bool BrowserTitlebar::IsOffTheRecord() {
1094   return browser_window_->browser()->profile()->IsOffTheRecord();
1095 }
1096
1097 BrowserTitlebar::ContextMenuModel::ContextMenuModel(
1098     ui::SimpleMenuModel::Delegate* delegate)
1099     : SimpleMenuModel(delegate) {
1100   AddItemWithStringId(IDC_NEW_TAB, IDS_TAB_CXMENU_NEWTAB);
1101   AddItemWithStringId(IDC_RESTORE_TAB, IDS_RESTORE_TAB);
1102   AddSeparator(ui::NORMAL_SEPARATOR);
1103   AddItemWithStringId(IDC_TASK_MANAGER, IDS_TASK_MANAGER);
1104   AddSeparator(ui::NORMAL_SEPARATOR);
1105   AddCheckItemWithStringId(kShowWindowDecorationsCommand,
1106                            IDS_SHOW_WINDOW_DECORATIONS_MENU);
1107 }