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
65using content::HostZoomMap;
66using content::UserMetricsAction;
67using content::WebContents;
68
69namespace {
70
71// Padding on left and right of the left toolbar buttons (back, forward, reload,
72// etc.).
73const int kToolbarLeftAreaPadding = 4;
74
75// Height of the toolbar in pixels (not counting padding).
76const int kToolbarHeight = 29;
77
78// Padding within the toolbar above the buttons and location bar.
79const int kTopBottomPadding = 3;
80
81// Height of the toolbar in pixels when we only show the location bar.
82const int kToolbarHeightLocationBarOnly = kToolbarHeight - 2;
83
84// Interior spacing between toolbar widgets.
85const int kToolbarWidgetSpacing = 1;
86
87// Amount of rounding on top corners of toolbar. Only used in Gtk theme mode.
88const int kToolbarCornerSize = 3;
89
90void 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
98BrowserToolbarGtk::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
119BrowserToolbarGtk::~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
130void 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
273void 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
283void BrowserToolbarGtk::Show() {
284  gtk_widget_show(toolbar_);
285}
286
287void BrowserToolbarGtk::Hide() {
288  gtk_widget_hide(toolbar_);
289}
290
291LocationBar* BrowserToolbarGtk::GetLocationBar() const {
292  return location_bar_.get();
293}
294
295void 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
303void 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
316void 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
344void 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
352GtkIconSet* 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.
358bool BrowserToolbarGtk::AlwaysShowIconForCmd(int command_id) const {
359  return command_id == IDC_UPGRADE_DIALOG ||
360      BookmarkSubMenuModel::IsBookmarkItemCommandId(command_id);
361}
362
363// ui::AcceleratorProvider
364
365bool 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
378void 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
427void BrowserToolbarGtk::UpdateWebContents(WebContents* contents) {
428  location_bar_->Update(contents);
429
430  if (actions_toolbar_.get())
431    actions_toolbar_->Update();
432}
433
434bool BrowserToolbarGtk::IsWrenchMenuShowing() const {
435  return wrench_menu_.get() && gtk_widget_get_visible(wrench_menu_->widget());
436}
437
438// BrowserToolbarGtk, private --------------------------------------------------
439
440void 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
455void 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
471bool 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
492gboolean 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
604gboolean 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
618void 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
630gboolean 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
644void 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(chrome::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
663bool BrowserToolbarGtk::ShouldOnlyShowLocation() const {
664  // If we're a popup window, only show the location bar (omnibox).
665  return !browser_->is_type_tabbed();
666}
667
668void 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
676gboolean 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
719void BrowserToolbarGtk::UpdateShowHomeButton() {
720  bool visible = show_home_button_.GetValue() && !ShouldOnlyShowLocation();
721  gtk_widget_set_visible(home_->widget(), visible);
722}
723