src/chrome/browser/ui/gtk/browser_toolbar_gtk.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_toolbar_gtk.h"
   6
   7 #include <gdk/gdkkeysyms.h>
   8 #include <gtk/gtk.h>
   9 #include <X11/XF86keysym.h>
  10
  11 #include "base/base_paths.h"
  12 #include "base/command_line.h"
  13 #include "base/debug/trace_event.h"
  14 #include "base/i18n/rtl.h"
  15 #include "base/logging.h"
  16 #include "base/memory/singleton.h"
  17 #include "base/path_service.h"
  18 #include "base/prefs/pref_service.h"
  19 #include "chrome/app/chrome_command_ids.h"
  20 #include "chrome/browser/chrome_notification_types.h"
  21 #include "chrome/browser/profiles/profile.h"
  22 #include "chrome/browser/themes/theme_properties.h"
  23 #include "chrome/browser/themes/theme_service.h"
  24 #include "chrome/browser/ui/browser.h"
  25 #include "chrome/browser/ui/browser_commands.h"
  26 #include "chrome/browser/ui/global_error/global_error.h"
  27 #include "chrome/browser/ui/global_error/global_error_service.h"
  28 #include "chrome/browser/ui/global_error/global_error_service_factory.h"
  29 #include "chrome/browser/ui/gtk/accelerators_gtk.h"
  30 #include "chrome/browser/ui/gtk/back_forward_button_gtk.h"
  31 #include "chrome/browser/ui/gtk/bookmarks/bookmark_sub_menu_model_gtk.h"
  32 #include "chrome/browser/ui/gtk/browser_actions_toolbar_gtk.h"
  33 #include "chrome/browser/ui/gtk/browser_window_gtk.h"
  34 #include "chrome/browser/ui/gtk/custom_button.h"
  35 #include "chrome/browser/ui/gtk/event_utils.h"
  36 #include "chrome/browser/ui/gtk/gtk_chrome_button.h"
  37 #include "chrome/browser/ui/gtk/gtk_theme_service.h"
  38 #include "chrome/browser/ui/gtk/gtk_util.h"
  39 #include "chrome/browser/ui/gtk/location_bar_view_gtk.h"
  40 #include "chrome/browser/ui/gtk/reload_button_gtk.h"
  41 #include "chrome/browser/ui/gtk/rounded_window.h"
  42 #include "chrome/browser/ui/gtk/tabs/tab_strip_gtk.h"
  43 #include "chrome/browser/ui/gtk/view_id_util.h"
  44 #include "chrome/browser/ui/toolbar/encoding_menu_controller.h"
  45 #include "chrome/browser/upgrade_detector.h"
  46 #include "chrome/common/net/url_fixer_upper.h"
  47 #include "chrome/common/pref_names.h"
  48 #include "chrome/common/url_constants.h"
  49 #include "content/public/browser/host_zoom_map.h"
  50 #include "content/public/browser/notification_details.h"
  51 #include "content/public/browser/notification_service.h"
  52 #include "content/public/browser/user_metrics.h"
  53 #include "content/public/browser/web_contents.h"
  54 #include "grit/chromium_strings.h"
  55 #include "grit/generated_resources.h"
  56 #include "grit/theme_resources.h"
  57 #include "ui/base/dragdrop/gtk_dnd_util.h"
  58 #include "ui/base/l10n/l10n_util.h"
  59 #include "ui/base/resource/resource_bundle.h"
  60 #include "ui/gfx/canvas_skia_paint.h"
  61 #include "ui/gfx/gtk_util.h"
  62 #include "ui/gfx/image/cairo_cached_surface.h"
  63 #include "ui/gfx/skbitmap_operations.h"
  64
  65 using base::UserMetricsAction;
  66 using content::HostZoomMap;
  67 using content::WebContents;
  68
  69 namespace {
  70
  71 // Padding on left and right of the left toolbar buttons (back, forward, reload,
  72 // etc.).
  73 const int kToolbarLeftAreaPadding = 4;
  74
  75 // Height of the toolbar in pixels (not counting padding).
  76 const int kToolbarHeight = 29;
  77
  78 // Padding within the toolbar above the buttons and location bar.
  79 const int kTopBottomPadding = 3;
  80
  81 // Height of the toolbar in pixels when we only show the location bar.
  82 const int kToolbarHeightLocationBarOnly = kToolbarHeight - 2;
  83
  84 // Interior spacing between toolbar widgets.
  85 const int kToolbarWidgetSpacing = 1;
  86
  87 // Amount of rounding on top corners of toolbar. Only used in Gtk theme mode.
  88 const int kToolbarCornerSize = 3;
  89
  90 void SetWidgetHeightRequest(GtkWidget* widget, gpointer user_data) {
  91   gtk_widget_set_size_request(widget, -1, GPOINTER_TO_INT(user_data));
  92 }
  93
  94 }  // namespace
  95
  96 // BrowserToolbarGtk, public ---------------------------------------------------
  97
  98 BrowserToolbarGtk::BrowserToolbarGtk(Browser* browser, BrowserWindowGtk* window)
  99     : toolbar_(NULL),
 100       location_bar_(new LocationBarViewGtk(browser)),
 101       is_wrench_menu_model_valid_(true),
 102       browser_(browser),
 103       window_(window) {
 104   wrench_menu_model_.reset(new WrenchMenuModel(this, browser_, false));
 105
 106   chrome::AddCommandObserver(browser_, IDC_BACK, this);
 107   chrome::AddCommandObserver(browser_, IDC_FORWARD, this);
 108   chrome::AddCommandObserver(browser_, IDC_HOME, this);
 109   chrome::AddCommandObserver(browser_, IDC_BOOKMARK_PAGE, this);
 110
 111   registrar_.Add(this,
 112                  chrome::NOTIFICATION_UPGRADE_RECOMMENDED,
 113                  content::NotificationService::AllSources());
 114   registrar_.Add(this,
 115                  chrome::NOTIFICATION_GLOBAL_ERRORS_CHANGED,
 116                  content::Source<Profile>(browser_->profile()));
 117 }
 118
 119 BrowserToolbarGtk::~BrowserToolbarGtk() {
 120   chrome::RemoveCommandObserver(browser_, IDC_BACK, this);
 121   chrome::RemoveCommandObserver(browser_, IDC_FORWARD, this);
 122   chrome::RemoveCommandObserver(browser_, IDC_HOME, this);
 123   chrome::RemoveCommandObserver(browser_, IDC_BOOKMARK_PAGE, this);
 124
 125   offscreen_entry_.Destroy();
 126
 127   wrench_menu_.reset();
 128 }
 129
 130 void BrowserToolbarGtk::Init(GtkWindow* top_level_window) {
 131   Profile* profile = browser_->profile();
 132   theme_service_ = GtkThemeService::GetFrom(profile);
 133   registrar_.Add(this,
 134                  chrome::NOTIFICATION_BROWSER_THEME_CHANGED,
 135                  content::Source<ThemeService>(theme_service_));
 136
 137   offscreen_entry_.Own(gtk_entry_new());
 138
 139   base::Closure callback =
 140       base::Bind(&BrowserToolbarGtk::SetUpDragForHomeButton,
 141                  base::Unretained(this));
 142
 143   show_home_button_.Init(prefs::kShowHomeButton, profile->GetPrefs(),
 144                          base::Bind(&BrowserToolbarGtk::UpdateShowHomeButton,
 145                                     base::Unretained(this)));
 146   home_page_.Init(prefs::kHomePage, profile->GetPrefs(), callback);
 147   home_page_is_new_tab_page_.Init(prefs::kHomePageIsNewTabPage,
 148                                   profile->GetPrefs(),
 149                                   callback);
 150
 151   event_box_ = gtk_event_box_new();
 152   // Make the event box transparent so themes can use transparent toolbar
 153   // backgrounds.
 154   if (!theme_service_->UsingNativeTheme())
 155     gtk_event_box_set_visible_window(GTK_EVENT_BOX(event_box_), FALSE);
 156
 157   toolbar_ = gtk_hbox_new(FALSE, 0);
 158   alignment_ = gtk_alignment_new(0.0, 0.0, 1.0, 1.0);
 159   UpdateForBookmarkBarVisibility(false);
 160   g_signal_connect(alignment_, "expose-event",
 161                    G_CALLBACK(&OnAlignmentExposeThunk), this);
 162   gtk_container_add(GTK_CONTAINER(event_box_), alignment_);
 163   gtk_container_add(GTK_CONTAINER(alignment_), toolbar_);
 164
 165   toolbar_left_ = gtk_hbox_new(FALSE, kToolbarWidgetSpacing);
 166
 167   GtkSizeGroup* size_group = gtk_size_group_new(GTK_SIZE_GROUP_HORIZONTAL);
 168   back_.reset(new BackForwardButtonGtk(browser_, false));
 169   g_signal_connect(back_->widget(), "clicked",
 170                    G_CALLBACK(OnButtonClickThunk), this);
 171   gtk_size_group_add_widget(size_group, back_->widget());
 172   gtk_box_pack_start(GTK_BOX(toolbar_left_), back_->widget(), FALSE,
 173                      FALSE, 0);
 174
 175   forward_.reset(new BackForwardButtonGtk(browser_, true));
 176   g_signal_connect(forward_->widget(), "clicked",
 177                    G_CALLBACK(OnButtonClickThunk), this);
 178   gtk_size_group_add_widget(size_group, forward_->widget());
 179   gtk_box_pack_start(GTK_BOX(toolbar_left_), forward_->widget(), FALSE,
 180                      FALSE, 0);
 181
 182   reload_.reset(new ReloadButtonGtk(location_bar_.get(), browser_));
 183   gtk_size_group_add_widget(size_group, reload_->widget());
 184   gtk_box_pack_start(GTK_BOX(toolbar_left_), reload_->widget(), FALSE, FALSE,
 185                      0);
 186
 187   home_.reset(new CustomDrawButton(theme_service_, IDR_HOME, IDR_HOME_P,
 188       IDR_HOME_H, 0, GTK_STOCK_HOME, GTK_ICON_SIZE_SMALL_TOOLBAR));
 189   gtk_widget_set_tooltip_text(home_->widget(),
 190       l10n_util::GetStringUTF8(IDS_TOOLTIP_HOME).c_str());
 191   g_signal_connect(home_->widget(), "clicked",
 192                    G_CALLBACK(OnButtonClickThunk), this);
 193   gtk_size_group_add_widget(size_group, home_->widget());
 194   gtk_box_pack_start(GTK_BOX(toolbar_left_), home_->widget(), FALSE, FALSE,
 195                      kToolbarWidgetSpacing);
 196   gtk_util::SetButtonTriggersNavigation(home_->widget());
 197
 198   gtk_box_pack_start(GTK_BOX(toolbar_), toolbar_left_, FALSE, FALSE,
 199                      kToolbarLeftAreaPadding);
 200
 201   g_object_unref(size_group);
 202
 203   location_hbox_ = gtk_hbox_new(FALSE, 0);
 204   location_bar_->Init(ShouldOnlyShowLocation());
 205   gtk_box_pack_start(GTK_BOX(location_hbox_), location_bar_->widget(), TRUE,
 206                      TRUE, 0);
 207
 208   g_signal_connect(location_hbox_, "expose-event",
 209                    G_CALLBACK(OnLocationHboxExposeThunk), this);
 210   gtk_box_pack_start(GTK_BOX(toolbar_), location_hbox_, TRUE, TRUE,
 211       ShouldOnlyShowLocation() ? 1 : 0);
 212
 213   if (!ShouldOnlyShowLocation()) {
 214     actions_toolbar_.reset(new BrowserActionsToolbarGtk(browser_));
 215     gtk_box_pack_start(GTK_BOX(toolbar_), actions_toolbar_->widget(),
 216                        FALSE, FALSE, 0);
 217   }
 218
 219   wrench_menu_image_ = gtk_image_new_from_pixbuf(
 220       theme_service_->GetRTLEnabledPixbufNamed(IDR_TOOLS));
 221   wrench_menu_button_.reset(new CustomDrawButton(theme_service_, IDR_TOOLS,
 222       IDR_TOOLS_P, IDR_TOOLS_H, 0, wrench_menu_image_));
 223   GtkWidget* wrench_button = wrench_menu_button_->widget();
 224
 225   gtk_widget_set_tooltip_text(
 226       wrench_button,
 227       l10n_util::GetStringUTF8(IDS_APPMENU_TOOLTIP).c_str());
 228   g_signal_connect(wrench_button, "button-press-event",
 229                    G_CALLBACK(OnMenuButtonPressEventThunk), this);
 230   gtk_widget_set_can_focus(wrench_button, FALSE);
 231
 232   // Put the wrench button in a box so that we can paint the update notification
 233   // over it.
 234   GtkWidget* wrench_box = gtk_alignment_new(0, 0, 1, 1);
 235   g_signal_connect_after(wrench_box, "expose-event",
 236                          G_CALLBACK(OnWrenchMenuButtonExposeThunk), this);
 237   gtk_container_add(GTK_CONTAINER(wrench_box), wrench_button);
 238   gtk_box_pack_start(GTK_BOX(toolbar_), wrench_box, FALSE, FALSE, 4);
 239
 240   wrench_menu_.reset(new MenuGtk(this, wrench_menu_model_.get()));
 241   // The bookmark menu model needs to be able to force the wrench menu to close.
 242   wrench_menu_model_->bookmark_sub_menu_model()->SetMenuGtk(wrench_menu_.get());
 243
 244   zoom_subscription_ = HostZoomMap::GetForBrowserContext(
 245       browser()->profile())->AddZoomLevelChangedCallback(
 246           base::Bind(&BrowserToolbarGtk::OnZoomLevelChanged,
 247                      base::Unretained(this)));
 248
 249   if (ShouldOnlyShowLocation()) {
 250     gtk_widget_show(event_box_);
 251     gtk_widget_show(alignment_);
 252     gtk_widget_show(toolbar_);
 253     gtk_widget_show_all(location_hbox_);
 254     gtk_widget_hide(reload_->widget());
 255   } else {
 256     gtk_widget_show_all(event_box_);
 257     if (actions_toolbar_->button_count() == 0)
 258       gtk_widget_hide(actions_toolbar_->widget());
 259   }
 260
 261   // Initialize pref-dependent UI state.
 262   UpdateShowHomeButton();
 263   SetUpDragForHomeButton();
 264
 265   // Because the above does a recursive show all on all widgets we need to
 266   // update the icon visibility to hide them.
 267   location_bar_->UpdateContentSettingsIcons();
 268
 269   SetViewIDs();
 270   theme_service_->InitThemesFor(this);
 271 }
 272
 273 void BrowserToolbarGtk::SetViewIDs() {
 274   ViewIDUtil::SetID(widget(), VIEW_ID_TOOLBAR);
 275   ViewIDUtil::SetID(back_->widget(), VIEW_ID_BACK_BUTTON);
 276   ViewIDUtil::SetID(forward_->widget(), VIEW_ID_FORWARD_BUTTON);
 277   ViewIDUtil::SetID(reload_->widget(), VIEW_ID_RELOAD_BUTTON);
 278   ViewIDUtil::SetID(home_->widget(), VIEW_ID_HOME_BUTTON);
 279   ViewIDUtil::SetID(location_bar_->widget(), VIEW_ID_OMNIBOX);
 280   ViewIDUtil::SetID(wrench_menu_button_->widget(), VIEW_ID_APP_MENU);
 281 }
 282
 283 void BrowserToolbarGtk::Show() {
 284   gtk_widget_show(toolbar_);
 285 }
 286
 287 void BrowserToolbarGtk::Hide() {
 288   gtk_widget_hide(toolbar_);
 289 }
 290
 291 LocationBar* BrowserToolbarGtk::GetLocationBar() const {
 292   return location_bar_.get();
 293 }
 294
 295 void BrowserToolbarGtk::UpdateForBookmarkBarVisibility(
 296     bool show_bottom_padding) {
 297   gtk_alignment_set_padding(GTK_ALIGNMENT(alignment_),
 298       ShouldOnlyShowLocation() ? 0 : kTopBottomPadding,
 299       !show_bottom_padding || ShouldOnlyShowLocation() ? 0 : kTopBottomPadding,
 300       0, 0);
 301 }
 302
 303 void BrowserToolbarGtk::ShowAppMenu() {
 304   wrench_menu_->Cancel();
 305
 306   if (!is_wrench_menu_model_valid_)
 307     RebuildWrenchMenu();
 308
 309   wrench_menu_button_->SetPaintOverride(GTK_STATE_ACTIVE);
 310   content::RecordAction(UserMetricsAction("ShowAppMenu"));
 311   wrench_menu_->PopupAsFromKeyEvent(wrench_menu_button_->widget());
 312 }
 313
 314 // CommandObserver -------------------------------------------------------------
 315
 316 void BrowserToolbarGtk::EnabledStateChangedForCommand(int id, bool enabled) {
 317   GtkWidget* widget = NULL;
 318   switch (id) {
 319     case IDC_BACK:
 320       widget = back_->widget();
 321       break;
 322     case IDC_FORWARD:
 323       widget = forward_->widget();
 324       break;
 325     case IDC_HOME:
 326       if (home_.get())
 327         widget = home_->widget();
 328       break;
 329   }
 330   if (widget) {
 331     if (!enabled && gtk_widget_get_state(widget) == GTK_STATE_PRELIGHT) {
 332       // If we're disabling a widget, GTK will helpfully restore it to its
 333       // previous state when we re-enable it, even if that previous state
 334       // is the prelight.  This looks bad.  See the bug for a simple repro.
 335       // http://code.google.com/p/chromium/issues/detail?id=13729
 336       gtk_widget_set_state(widget, GTK_STATE_NORMAL);
 337     }
 338     gtk_widget_set_sensitive(widget, enabled);
 339   }
 340 }
 341
 342 // MenuGtk::Delegate -----------------------------------------------------------
 343
 344 void BrowserToolbarGtk::StoppedShowing() {
 345   // Without these calls, the hover state can get stuck since the leave-notify
 346   // event is not sent when clicking a button brings up the menu.
 347   gtk_chrome_button_set_hover_state(
 348       GTK_CHROME_BUTTON(wrench_menu_button_->widget()), 0.0);
 349   wrench_menu_button_->UnsetPaintOverride();
 350 }
 351
 352 GtkIconSet* BrowserToolbarGtk::GetIconSetForId(int idr) {
 353   return theme_service_->GetIconSetForId(idr);
 354 }
 355
 356 // Always show images because we desire that some icons always show
 357 // regardless of the system setting.
 358 bool BrowserToolbarGtk::AlwaysShowIconForCmd(int command_id) const {
 359   return command_id == IDC_UPGRADE_DIALOG ||
 360       BookmarkSubMenuModel::IsBookmarkItemCommandId(command_id);
 361 }
 362
 363 // ui::AcceleratorProvider
 364
 365 bool BrowserToolbarGtk::GetAcceleratorForCommandId(
 366     int id,
 367     ui::Accelerator* out_accelerator) {
 368   const ui::Accelerator* accelerator =
 369       AcceleratorsGtk::GetInstance()->GetPrimaryAcceleratorForCommand(id);
 370   if (!accelerator)
 371     return false;
 372   *out_accelerator = *accelerator;
 373   return true;
 374 }
 375
 376 // content::NotificationObserver -----------------------------------------------
 377
 378 void BrowserToolbarGtk::Observe(int type,
 379                                 const content::NotificationSource& source,
 380                                 const content::NotificationDetails& details) {
 381   if (type == chrome::NOTIFICATION_BROWSER_THEME_CHANGED) {
 382     // Update the spacing around the menu buttons
 383     bool use_gtk = theme_service_->UsingNativeTheme();
 384     int border = use_gtk ? 0 : 2;
 385     gtk_container_set_border_width(
 386         GTK_CONTAINER(wrench_menu_button_->widget()), border);
 387
 388     // Force the height of the toolbar so we get the right amount of padding
 389     // above and below the location bar. We always force the size of the widgets
 390     // to either side of the location box, but we only force the location box
 391     // size in chrome-theme mode because that's the only time we try to control
 392     // the font size.
 393     int toolbar_height = ShouldOnlyShowLocation() ?
 394                          kToolbarHeightLocationBarOnly : kToolbarHeight;
 395     gtk_container_foreach(GTK_CONTAINER(toolbar_), SetWidgetHeightRequest,
 396                           GINT_TO_POINTER(toolbar_height));
 397     gtk_widget_set_size_request(location_hbox_, -1,
 398                                 use_gtk ? -1 : toolbar_height);
 399
 400     // When using the GTK+ theme, we need to have the event box be visible so
 401     // buttons don't get a halo color from the background.  When using Chromium
 402     // themes, we want to let the background show through the toolbar.
 403     gtk_event_box_set_visible_window(GTK_EVENT_BOX(event_box_), use_gtk);
 404
 405     if (use_gtk) {
 406       // We need to manually update the icon if we are in GTK mode. (Note that
 407       // we set the initial value in Init()).
 408       gtk_image_set_from_pixbuf(
 409           GTK_IMAGE(wrench_menu_image_),
 410           theme_service_->GetRTLEnabledPixbufNamed(IDR_TOOLS));
 411     }
 412
 413     UpdateRoundedness();
 414   } else if (type == chrome::NOTIFICATION_UPGRADE_RECOMMENDED) {
 415     // Redraw the wrench menu to update the badge.
 416     gtk_widget_queue_draw(wrench_menu_button_->widget());
 417   } else if (type == chrome::NOTIFICATION_GLOBAL_ERRORS_CHANGED) {
 418     is_wrench_menu_model_valid_ = false;
 419     gtk_widget_queue_draw(wrench_menu_button_->widget());
 420   } else {
 421     NOTREACHED();
 422   }
 423 }
 424
 425 // BrowserToolbarGtk, public ---------------------------------------------------
 426
 427 void BrowserToolbarGtk::UpdateWebContents(WebContents* contents) {
 428   location_bar_->Update(contents);
 429
 430   if (actions_toolbar_.get())
 431     actions_toolbar_->Update();
 432 }
 433
 434 bool BrowserToolbarGtk::IsWrenchMenuShowing() const {
 435   return wrench_menu_.get() && gtk_widget_get_visible(wrench_menu_->widget());
 436 }
 437
 438 // BrowserToolbarGtk, private --------------------------------------------------
 439
 440 void BrowserToolbarGtk::OnZoomLevelChanged(
 441     const HostZoomMap::ZoomLevelChange& change) {
 442   // Since BrowserToolbarGtk create a new |wrench_menu_model_| in
 443   // RebuildWrenchMenu(), the ordering of the observers of HostZoomMap
 444   // can change, and result in subtle bugs like http://crbug.com/118823.
 445   // Rather than depending on the ordering of the observers, always update
 446   // the WrenchMenuModel before updating the WrenchMenu.
 447   wrench_menu_model_->UpdateZoomControls();
 448
 449   // If our zoom level changed, we need to tell the menu to update its state,
 450   // since the menu could still be open.
 451   wrench_menu_->UpdateMenu();
 452 }
 453
 454
 455 void BrowserToolbarGtk::SetUpDragForHomeButton() {
 456   if (!home_page_.IsManaged() && !home_page_is_new_tab_page_.IsManaged()) {
 457     gtk_drag_dest_set(home_->widget(), GTK_DEST_DEFAULT_ALL,
 458                       NULL, 0, GDK_ACTION_COPY);
 459     static const int targets[] = { ui::TEXT_PLAIN, ui::TEXT_URI_LIST, -1 };
 460     ui::SetDestTargetList(home_->widget(), targets);
 461
 462     drop_handler_.reset(new ui::GtkSignalRegistrar());
 463     drop_handler_->Connect(home_->widget(), "drag-data-received",
 464                            G_CALLBACK(OnDragDataReceivedThunk), this);
 465   } else {
 466     gtk_drag_dest_unset(home_->widget());
 467     drop_handler_.reset(NULL);
 468   }
 469 }
 470
 471 bool BrowserToolbarGtk::UpdateRoundedness() {
 472   // We still round the corners if we are in chrome theme mode, but we do it by
 473   // drawing theme resources rather than changing the physical shape of the
 474   // widget.
 475   bool should_be_rounded = theme_service_->UsingNativeTheme() &&
 476       window_->ShouldDrawContentDropShadow();
 477
 478   if (should_be_rounded == gtk_util::IsActingAsRoundedWindow(alignment_))
 479     return false;
 480
 481   if (should_be_rounded) {
 482     gtk_util::ActAsRoundedWindow(alignment_, GdkColor(), kToolbarCornerSize,
 483                                  gtk_util::ROUNDED_TOP,
 484                                  gtk_util::BORDER_NONE);
 485   } else {
 486     gtk_util::StopActingAsRoundedWindow(alignment_);
 487   }
 488
 489   return true;
 490 }
 491
 492 gboolean BrowserToolbarGtk::OnAlignmentExpose(GtkWidget* widget,
 493                                               GdkEventExpose* e) {
 494   TRACE_EVENT0("ui::gtk", "BrowserToolbarGtk::OnAlignmentExpose");
 495
 496   // We may need to update the roundedness of the toolbar's top corners. In
 497   // this case, don't draw; we'll be called again soon enough.
 498   if (UpdateRoundedness())
 499     return TRUE;
 500
 501   // We don't need to render the toolbar image in GTK mode.
 502   if (theme_service_->UsingNativeTheme())
 503     return FALSE;
 504
 505   cairo_t* cr = gdk_cairo_create(gtk_widget_get_window(widget));
 506   gdk_cairo_rectangle(cr, &e->area);
 507   cairo_clip(cr);
 508
 509   gfx::Point tabstrip_origin =
 510       window_->tabstrip()->GetTabStripOriginForWidget(widget);
 511   // Fill the entire region with the toolbar color.
 512   GdkColor color = theme_service_->GetGdkColor(
 513       ThemeProperties::COLOR_TOOLBAR);
 514   gdk_cairo_set_source_color(cr, &color);
 515   cairo_fill(cr);
 516
 517   // The horizontal size of the top left and right corner images.
 518   const int kCornerWidth = 4;
 519   // The thickness of the shadow outside the toolbar's bounds; the offset
 520   // between the edge of the toolbar and where we anchor the corner images.
 521   const int kShadowThickness = 2;
 522
 523   GtkAllocation allocation;
 524   gtk_widget_get_allocation(widget, &allocation);
 525   gfx::Rect area(e->area);
 526   gfx::Rect right(allocation.x + allocation.width - kCornerWidth,
 527                   allocation.y - kShadowThickness,
 528                   kCornerWidth,
 529                   allocation.height + kShadowThickness);
 530   gfx::Rect left(allocation.x - kShadowThickness,
 531                  allocation.y - kShadowThickness,
 532                  kCornerWidth,
 533                  allocation.height + kShadowThickness);
 534
 535   if (window_->ShouldDrawContentDropShadow()) {
 536     // Leave room to draw rounded corners.
 537     area.Subtract(right);
 538     area.Subtract(left);
 539   }
 540
 541   gfx::Image background = theme_service_->GetImageNamed(IDR_THEME_TOOLBAR);
 542   background.ToCairo()->SetSource(
 543       cr, widget, tabstrip_origin.x(), tabstrip_origin.y());
 544   cairo_pattern_set_extend(cairo_get_source(cr), CAIRO_EXTEND_REPEAT);
 545   cairo_rectangle(cr, area.x(), area.y(), area.width(), area.height());
 546   cairo_fill(cr);
 547
 548   if (!window_->ShouldDrawContentDropShadow()) {
 549     // The rest of this function is for rounded corners. Our work is done here.
 550     cairo_destroy(cr);
 551     return FALSE;
 552   }
 553
 554   bool draw_left_corner = left.Intersects(gfx::Rect(e->area));
 555   bool draw_right_corner = right.Intersects(gfx::Rect(e->area));
 556
 557   if (draw_left_corner || draw_right_corner) {
 558     // Create a mask which is composed of the left and/or right corners.
 559     cairo_surface_t* target = cairo_surface_create_similar(
 560         cairo_get_target(cr),
 561         CAIRO_CONTENT_COLOR_ALPHA,
 562         allocation.x + allocation.width,
 563         allocation.y + allocation.height);
 564     cairo_t* copy_cr = cairo_create(target);
 565
 566     ui::ResourceBundle& rb = ui::ResourceBundle::GetSharedInstance();
 567
 568     cairo_set_operator(copy_cr, CAIRO_OPERATOR_SOURCE);
 569     if (draw_left_corner) {
 570       rb.GetNativeImageNamed(IDR_CONTENT_TOP_LEFT_CORNER_MASK).ToCairo()->
 571           SetSource(copy_cr, widget, left.x(), left.y());
 572       cairo_paint(copy_cr);
 573     }
 574     if (draw_right_corner) {
 575       rb.GetNativeImageNamed(IDR_CONTENT_TOP_RIGHT_CORNER_MASK).ToCairo()->
 576           SetSource(copy_cr, widget, right.x(), right.y());
 577       // We fill a path rather than just painting because we don't want to
 578       // overwrite the left corner.
 579       cairo_rectangle(copy_cr, right.x(), right.y(),
 580                       right.width(), right.height());
 581       cairo_fill(copy_cr);
 582     }
 583
 584     // Draw the background. CAIRO_OPERATOR_IN uses the existing pixel data as
 585     // an alpha mask.
 586     background.ToCairo()->SetSource(copy_cr, widget,
 587                                      tabstrip_origin.x(), tabstrip_origin.y());
 588     cairo_set_operator(copy_cr, CAIRO_OPERATOR_IN);
 589     cairo_pattern_set_extend(cairo_get_source(copy_cr), CAIRO_EXTEND_REPEAT);
 590     cairo_paint(copy_cr);
 591     cairo_destroy(copy_cr);
 592
 593     // Copy the temporary surface to the screen.
 594     cairo_set_source_surface(cr, target, 0, 0);
 595     cairo_paint(cr);
 596     cairo_surface_destroy(target);
 597   }
 598
 599   cairo_destroy(cr);
 600
 601   return FALSE;  // Allow subwidgets to paint.
 602 }
 603
 604 gboolean BrowserToolbarGtk::OnLocationHboxExpose(GtkWidget* location_hbox,
 605                                                  GdkEventExpose* e) {
 606   TRACE_EVENT0("ui::gtk", "BrowserToolbarGtk::OnLocationHboxExpose");
 607   if (theme_service_->UsingNativeTheme()) {
 608     GtkAllocation allocation;
 609     gtk_widget_get_allocation(location_hbox, &allocation);
 610     gtk_util::DrawTextEntryBackground(offscreen_entry_.get(),
 611                                       location_hbox, &e->area,
 612                                       &allocation);
 613   }
 614
 615   return FALSE;
 616 }
 617
 618 void BrowserToolbarGtk::OnButtonClick(GtkWidget* button) {
 619   if ((button == back_->widget()) || (button == forward_->widget())) {
 620     if (event_utils::DispositionForCurrentButtonPressEvent() == CURRENT_TAB)
 621       location_bar_->Revert();
 622     return;
 623   }
 624
 625   DCHECK(home_.get() && button == home_->widget()) <<
 626       "Unexpected button click callback";
 627   chrome::Home(browser_, event_utils::DispositionForCurrentButtonPressEvent());
 628 }
 629
 630 gboolean BrowserToolbarGtk::OnMenuButtonPressEvent(GtkWidget* button,
 631                                                    GdkEventButton* event) {
 632   if (event->button != 1)
 633     return FALSE;
 634
 635   if (!is_wrench_menu_model_valid_)
 636     RebuildWrenchMenu();
 637
 638   wrench_menu_button_->SetPaintOverride(GTK_STATE_ACTIVE);
 639   wrench_menu_->PopupForWidget(button, event->button, event->time);
 640
 641   return TRUE;
 642 }
 643
 644 void BrowserToolbarGtk::OnDragDataReceived(GtkWidget* widget,
 645     GdkDragContext* drag_context, gint x, gint y,
 646     GtkSelectionData* data, guint info, guint time) {
 647   if (info != ui::TEXT_PLAIN) {
 648     NOTIMPLEMENTED() << "Only support plain text drops for now, sorry!";
 649     return;
 650   }
 651
 652   GURL url(reinterpret_cast<const char*>(gtk_selection_data_get_data(data)));
 653   if (!url.is_valid())
 654     return;
 655
 656   bool url_is_newtab = url.SchemeIs(content::kChromeUIScheme) &&
 657                        url.host() == chrome::kChromeUINewTabHost;
 658   home_page_is_new_tab_page_.SetValue(url_is_newtab);
 659   if (!url_is_newtab)
 660     home_page_.SetValue(url.spec());
 661 }
 662
 663 bool BrowserToolbarGtk::ShouldOnlyShowLocation() const {
 664   // If we're a popup window, only show the location bar (omnibox).
 665   return !browser_->is_type_tabbed();
 666 }
 667
 668 void BrowserToolbarGtk::RebuildWrenchMenu() {
 669   wrench_menu_model_.reset(new WrenchMenuModel(this, browser_, false));
 670   wrench_menu_.reset(new MenuGtk(this, wrench_menu_model_.get()));
 671   // The bookmark menu model needs to be able to force the wrench menu to close.
 672   wrench_menu_model_->bookmark_sub_menu_model()->SetMenuGtk(wrench_menu_.get());
 673   is_wrench_menu_model_valid_ = true;
 674 }
 675
 676 gboolean BrowserToolbarGtk::OnWrenchMenuButtonExpose(GtkWidget* sender,
 677                                                      GdkEventExpose* expose) {
 678   TRACE_EVENT0("ui::gtk", "BrowserToolbarGtk::OnWrenchMenuButtonExpose");
 679   int resource_id = 0;
 680   if (UpgradeDetector::GetInstance()->notify_upgrade()) {
 681     resource_id = UpgradeDetector::GetInstance()->GetIconResourceID(
 682             UpgradeDetector::UPGRADE_ICON_TYPE_BADGE);
 683   } else {
 684     GlobalError* error = GlobalErrorServiceFactory::GetForProfile(
 685         browser_->profile())->GetHighestSeverityGlobalErrorWithWrenchMenuItem();
 686     if (error) {
 687       switch (error->GetSeverity()) {
 688         case GlobalError::SEVERITY_LOW:
 689           resource_id = IDR_UPDATE_BADGE;
 690           break;
 691         case GlobalError::SEVERITY_MEDIUM:
 692           resource_id = IDR_UPDATE_BADGE4;
 693           break;
 694         case GlobalError::SEVERITY_HIGH:
 695           resource_id = IDR_UPDATE_BADGE3;
 696           break;
 697       }
 698     }
 699   }
 700
 701   if (!resource_id)
 702     return FALSE;
 703
 704   GtkAllocation allocation;
 705   gtk_widget_get_allocation(sender, &allocation);
 706
 707   // Draw the chrome app menu icon onto the canvas.
 708   const gfx::ImageSkia* badge = theme_service_->GetImageSkiaNamed(resource_id);
 709   gfx::CanvasSkiaPaint canvas(expose, false);
 710   int x_offset = base::i18n::IsRTL() ? 0 : allocation.width - badge->width();
 711   int y_offset = 0;
 712   canvas.DrawImageInt(*badge,
 713                       allocation.x + x_offset,
 714                       allocation.y + y_offset);
 715
 716   return FALSE;
 717 }
 718
 719 void BrowserToolbarGtk::UpdateShowHomeButton() {
 720   bool visible = show_home_button_.GetValue() && !ShouldOnlyShowLocation();
 721   gtk_widget_set_visible(home_->widget(), visible);
 722 }