browser_toolbar_gtk.cc revision ddb351dbec246cf1fab5ec20d2d5520909041de1 
1// Copyright (c) 2011 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 <X11/XF86keysym.h>
8#include <gdk/gdkkeysyms.h>
9#include <gtk/gtk.h>
10
11#include "base/base_paths.h"
12#include "base/command_line.h"
13#include "base/i18n/rtl.h"
14#include "base/logging.h"
15#include "base/memory/singleton.h"
16#include "base/path_service.h"
17#include "chrome/app/chrome_command_ids.h"
18#include "chrome/browser/metrics/user_metrics.h"
19#include "chrome/browser/net/url_fixer_upper.h"
20#include "chrome/browser/prefs/pref_service.h"
21#include "chrome/browser/profiles/profile.h"
22#include "chrome/browser/themes/theme_service.h"
23#include "chrome/browser/ui/browser.h"
24#include "chrome/browser/ui/gtk/accelerators_gtk.h"
25#include "chrome/browser/ui/gtk/back_forward_button_gtk.h"
26#include "chrome/browser/ui/gtk/browser_actions_toolbar_gtk.h"
27#include "chrome/browser/ui/gtk/browser_window_gtk.h"
28#include "chrome/browser/ui/gtk/cairo_cached_surface.h"
29#include "chrome/browser/ui/gtk/custom_button.h"
30#include "chrome/browser/ui/gtk/gtk_chrome_button.h"
31#include "chrome/browser/ui/gtk/gtk_theme_service.h"
32#include "chrome/browser/ui/gtk/gtk_util.h"
33#include "chrome/browser/ui/gtk/location_bar_view_gtk.h"
34#include "chrome/browser/ui/gtk/reload_button_gtk.h"
35#include "chrome/browser/ui/gtk/rounded_window.h"
36#include "chrome/browser/ui/gtk/tabs/tab_strip_gtk.h"
37#include "chrome/browser/ui/gtk/view_id_util.h"
38#include "chrome/browser/ui/toolbar/encoding_menu_controller.h"
39#include "chrome/browser/upgrade_detector.h"
40#include "chrome/common/pref_names.h"
41#include "chrome/common/url_constants.h"
42#include "content/browser/tab_contents/tab_contents.h"
43#include "content/common/notification_details.h"
44#include "content/common/notification_service.h"
45#include "content/common/notification_type.h"
46#include "grit/chromium_strings.h"
47#include "grit/generated_resources.h"
48#include "grit/theme_resources.h"
49#include "ui/base/dragdrop/gtk_dnd_util.h"
50#include "ui/base/l10n/l10n_util.h"
51#include "ui/base/models/accelerator_gtk.h"
52#include "ui/gfx/canvas_skia_paint.h"
53#include "ui/gfx/gtk_util.h"
54#include "ui/gfx/skbitmap_operations.h"
55
56namespace {
57
58// Padding on left and right of the left toolbar buttons (back, forward, reload,
59// etc.).
60const int kToolbarLeftAreaPadding = 4;
61
62// Height of the toolbar in pixels (not counting padding).
63const int kToolbarHeight = 29;
64
65// Padding within the toolbar above the buttons and location bar.
66const int kTopBottomPadding = 3;
67
68// Height of the toolbar in pixels when we only show the location bar.
69const int kToolbarHeightLocationBarOnly = kToolbarHeight - 2;
70
71// Interior spacing between toolbar widgets.
72const int kToolbarWidgetSpacing = 1;
73
74// Amount of rounding on top corners of toolbar. Only used in Gtk theme mode.
75const int kToolbarCornerSize = 3;
76
77void SetWidgetHeightRequest(GtkWidget* widget, gpointer user_data) {
78  gtk_widget_set_size_request(widget, -1, GPOINTER_TO_INT(user_data));
79}
80
81}  // namespace
82
83// BrowserToolbarGtk, public ---------------------------------------------------
84
85BrowserToolbarGtk::BrowserToolbarGtk(Browser* browser, BrowserWindowGtk* window)
86    : toolbar_(NULL),
87      location_bar_(new LocationBarViewGtk(browser)),
88      model_(browser->toolbar_model()),
89      wrench_menu_model_(this, browser),
90      browser_(browser),
91      window_(window),
92      profile_(NULL) {
93  browser_->command_updater()->AddCommandObserver(IDC_BACK, this);
94  browser_->command_updater()->AddCommandObserver(IDC_FORWARD, this);
95  browser_->command_updater()->AddCommandObserver(IDC_HOME, this);
96  browser_->command_updater()->AddCommandObserver(IDC_BOOKMARK_PAGE, this);
97
98  registrar_.Add(this,
99                 NotificationType::BROWSER_THEME_CHANGED,
100                 NotificationService::AllSources());
101  registrar_.Add(this,
102                 NotificationType::UPGRADE_RECOMMENDED,
103                 NotificationService::AllSources());
104}
105
106BrowserToolbarGtk::~BrowserToolbarGtk() {
107  browser_->command_updater()->RemoveCommandObserver(IDC_BACK, this);
108  browser_->command_updater()->RemoveCommandObserver(IDC_FORWARD, this);
109  browser_->command_updater()->RemoveCommandObserver(IDC_HOME, this);
110  browser_->command_updater()->RemoveCommandObserver(IDC_BOOKMARK_PAGE, this);
111
112  offscreen_entry_.Destroy();
113
114  wrench_menu_.reset();
115}
116
117void BrowserToolbarGtk::Init(Profile* profile,
118                             GtkWindow* top_level_window) {
119  // Make sure to tell the location bar the profile before calling its Init.
120  SetProfile(profile);
121
122  theme_service_ = GtkThemeService::GetFrom(profile);
123  offscreen_entry_.Own(gtk_entry_new());
124
125  show_home_button_.Init(prefs::kShowHomeButton, profile->GetPrefs(), this);
126  home_page_.Init(prefs::kHomePage, profile->GetPrefs(), this);
127  home_page_is_new_tab_page_.Init(prefs::kHomePageIsNewTabPage,
128                                  profile->GetPrefs(), this);
129
130  event_box_ = gtk_event_box_new();
131  // Make the event box transparent so themes can use transparent toolbar
132  // backgrounds.
133  if (!theme_service_->UseGtkTheme())
134    gtk_event_box_set_visible_window(GTK_EVENT_BOX(event_box_), FALSE);
135
136  toolbar_ = gtk_hbox_new(FALSE, 0);
137  alignment_ = gtk_alignment_new(0.0, 0.0, 1.0, 1.0);
138  UpdateForBookmarkBarVisibility(false);
139  g_signal_connect(alignment_, "expose-event",
140                   G_CALLBACK(&OnAlignmentExposeThunk), this);
141  gtk_container_add(GTK_CONTAINER(event_box_), alignment_);
142  gtk_container_add(GTK_CONTAINER(alignment_), toolbar_);
143
144  toolbar_left_ = gtk_hbox_new(FALSE, kToolbarWidgetSpacing);
145
146  back_.reset(new BackForwardButtonGtk(browser_, false));
147  g_signal_connect(back_->widget(), "clicked",
148                   G_CALLBACK(OnButtonClickThunk), this);
149  gtk_box_pack_start(GTK_BOX(toolbar_left_), back_->widget(), FALSE,
150                     FALSE, 0);
151
152  forward_.reset(new BackForwardButtonGtk(browser_, true));
153  g_signal_connect(forward_->widget(), "clicked",
154                   G_CALLBACK(OnButtonClickThunk), this);
155  gtk_box_pack_start(GTK_BOX(toolbar_left_), forward_->widget(), FALSE,
156                     FALSE, 0);
157
158  reload_.reset(new ReloadButtonGtk(location_bar_.get(), browser_));
159  gtk_box_pack_start(GTK_BOX(toolbar_left_), reload_->widget(), FALSE, FALSE,
160                     0);
161
162  home_.reset(new CustomDrawButton(GtkThemeService::GetFrom(profile_),
163      IDR_HOME, IDR_HOME_P, IDR_HOME_H, 0, GTK_STOCK_HOME,
164      GTK_ICON_SIZE_SMALL_TOOLBAR));
165  gtk_widget_set_tooltip_text(home_->widget(),
166      l10n_util::GetStringUTF8(IDS_TOOLTIP_HOME).c_str());
167  g_signal_connect(home_->widget(), "clicked",
168                   G_CALLBACK(OnButtonClickThunk), this);
169  gtk_box_pack_start(GTK_BOX(toolbar_left_), home_->widget(), FALSE, FALSE,
170                     kToolbarWidgetSpacing);
171  gtk_util::SetButtonTriggersNavigation(home_->widget());
172
173  gtk_box_pack_start(GTK_BOX(toolbar_), toolbar_left_, FALSE, FALSE,
174                     kToolbarLeftAreaPadding);
175
176  location_hbox_ = gtk_hbox_new(FALSE, 0);
177  location_bar_->Init(ShouldOnlyShowLocation());
178  gtk_box_pack_start(GTK_BOX(location_hbox_), location_bar_->widget(), TRUE,
179                     TRUE, 0);
180
181  g_signal_connect(location_hbox_, "expose-event",
182                   G_CALLBACK(OnLocationHboxExposeThunk), this);
183  gtk_box_pack_start(GTK_BOX(toolbar_), location_hbox_, TRUE, TRUE,
184      ShouldOnlyShowLocation() ? 1 : 0);
185
186  if (!ShouldOnlyShowLocation()) {
187    actions_toolbar_.reset(new BrowserActionsToolbarGtk(browser_));
188    gtk_box_pack_start(GTK_BOX(toolbar_), actions_toolbar_->widget(),
189                       FALSE, FALSE, 0);
190  }
191
192  wrench_menu_image_ = gtk_image_new_from_pixbuf(
193      theme_service_->GetRTLEnabledPixbufNamed(IDR_TOOLS));
194  wrench_menu_button_.reset(new CustomDrawButton(
195      GtkThemeService::GetFrom(profile_),
196      IDR_TOOLS, IDR_TOOLS_P, IDR_TOOLS_H, 0,
197      wrench_menu_image_));
198  GtkWidget* wrench_button = wrench_menu_button_->widget();
199
200  gtk_widget_set_tooltip_text(
201      wrench_button,
202      l10n_util::GetStringFUTF8(IDS_APPMENU_TOOLTIP,
203          l10n_util::GetStringUTF16(IDS_PRODUCT_NAME)).c_str());
204  g_signal_connect(wrench_button, "button-press-event",
205                   G_CALLBACK(OnMenuButtonPressEventThunk), this);
206  GTK_WIDGET_UNSET_FLAGS(wrench_button, GTK_CAN_FOCUS);
207
208  // Put the wrench button in a box so that we can paint the update notification
209  // over it.
210  GtkWidget* wrench_box = gtk_alignment_new(0, 0, 1, 1);
211  g_signal_connect_after(wrench_box, "expose-event",
212                         G_CALLBACK(OnWrenchMenuButtonExposeThunk), this);
213  gtk_container_add(GTK_CONTAINER(wrench_box), wrench_button);
214  gtk_box_pack_start(GTK_BOX(toolbar_), wrench_box, FALSE, FALSE, 4);
215
216  wrench_menu_.reset(new MenuGtk(this, &wrench_menu_model_));
217  registrar_.Add(this, NotificationType::ZOOM_LEVEL_CHANGED,
218                 Source<Profile>(browser_->profile()));
219
220  if (ShouldOnlyShowLocation()) {
221    gtk_widget_show(event_box_);
222    gtk_widget_show(alignment_);
223    gtk_widget_show(toolbar_);
224    gtk_widget_show_all(location_hbox_);
225    gtk_widget_hide(reload_->widget());
226  } else {
227    gtk_widget_show_all(event_box_);
228    if (actions_toolbar_->button_count() == 0)
229      gtk_widget_hide(actions_toolbar_->widget());
230  }
231  // Initialize pref-dependent UI state.
232  NotifyPrefChanged(NULL);
233
234  // Because the above does a recursive show all on all widgets we need to
235  // update the icon visibility to hide them.
236  location_bar_->UpdateContentSettingsIcons();
237
238  SetViewIDs();
239  theme_service_->InitThemesFor(this);
240}
241
242void BrowserToolbarGtk::SetViewIDs() {
243  ViewIDUtil::SetID(widget(), VIEW_ID_TOOLBAR);
244  ViewIDUtil::SetID(back_->widget(), VIEW_ID_BACK_BUTTON);
245  ViewIDUtil::SetID(forward_->widget(), VIEW_ID_FORWARD_BUTTON);
246  ViewIDUtil::SetID(reload_->widget(), VIEW_ID_RELOAD_BUTTON);
247  ViewIDUtil::SetID(home_->widget(), VIEW_ID_HOME_BUTTON);
248  ViewIDUtil::SetID(location_bar_->widget(), VIEW_ID_LOCATION_BAR);
249  ViewIDUtil::SetID(wrench_menu_button_->widget(), VIEW_ID_APP_MENU);
250}
251
252void BrowserToolbarGtk::Show() {
253  gtk_widget_show(toolbar_);
254}
255
256void BrowserToolbarGtk::Hide() {
257  gtk_widget_hide(toolbar_);
258}
259
260LocationBar* BrowserToolbarGtk::GetLocationBar() const {
261  return location_bar_.get();
262}
263
264void BrowserToolbarGtk::UpdateForBookmarkBarVisibility(
265    bool show_bottom_padding) {
266  gtk_alignment_set_padding(GTK_ALIGNMENT(alignment_),
267      ShouldOnlyShowLocation() ? 0 : kTopBottomPadding,
268      !show_bottom_padding || ShouldOnlyShowLocation() ? 0 : kTopBottomPadding,
269      0, 0);
270}
271
272void BrowserToolbarGtk::ShowAppMenu() {
273  wrench_menu_->Cancel();
274  wrench_menu_button_->SetPaintOverride(GTK_STATE_ACTIVE);
275  UserMetrics::RecordAction(UserMetricsAction("ShowAppMenu"));
276  wrench_menu_->PopupAsFromKeyEvent(wrench_menu_button_->widget());
277}
278
279// CommandUpdater::CommandObserver ---------------------------------------------
280
281void BrowserToolbarGtk::EnabledStateChangedForCommand(int id, bool enabled) {
282  GtkWidget* widget = NULL;
283  switch (id) {
284    case IDC_BACK:
285      widget = back_->widget();
286      break;
287    case IDC_FORWARD:
288      widget = forward_->widget();
289      break;
290    case IDC_HOME:
291      if (home_.get())
292        widget = home_->widget();
293      break;
294  }
295  if (widget) {
296    if (!enabled && GTK_WIDGET_STATE(widget) == GTK_STATE_PRELIGHT) {
297      // If we're disabling a widget, GTK will helpfully restore it to its
298      // previous state when we re-enable it, even if that previous state
299      // is the prelight.  This looks bad.  See the bug for a simple repro.
300      // http://code.google.com/p/chromium/issues/detail?id=13729
301      gtk_widget_set_state(widget, GTK_STATE_NORMAL);
302    }
303    gtk_widget_set_sensitive(widget, enabled);
304  }
305}
306
307// MenuGtk::Delegate -----------------------------------------------------------
308
309void BrowserToolbarGtk::StoppedShowing() {
310  // Without these calls, the hover state can get stuck since the leave-notify
311  // event is not sent when clicking a button brings up the menu.
312  gtk_chrome_button_set_hover_state(
313      GTK_CHROME_BUTTON(wrench_menu_button_->widget()), 0.0);
314  wrench_menu_button_->UnsetPaintOverride();
315}
316
317GtkIconSet* BrowserToolbarGtk::GetIconSetForId(int idr) {
318  return theme_service_->GetIconSetForId(idr);
319}
320
321// Always show images because we desire that some icons always show
322// regardless of the system setting.
323bool BrowserToolbarGtk::AlwaysShowIconForCmd(int command_id) const {
324  return command_id == IDC_UPGRADE_DIALOG;
325}
326
327// ui::AcceleratorProvider
328
329bool BrowserToolbarGtk::GetAcceleratorForCommandId(
330    int id,
331    ui::Accelerator* accelerator) {
332  const ui::AcceleratorGtk* accelerator_gtk =
333      AcceleratorsGtk::GetInstance()->GetPrimaryAcceleratorForCommand(id);
334  if (accelerator_gtk)
335    *accelerator = *accelerator_gtk;
336  return !!accelerator_gtk;
337}
338
339// NotificationObserver --------------------------------------------------------
340
341void BrowserToolbarGtk::Observe(NotificationType type,
342                                const NotificationSource& source,
343                                const NotificationDetails& details) {
344  if (type == NotificationType::PREF_CHANGED) {
345    NotifyPrefChanged(Details<std::string>(details).ptr());
346  } else if (type == NotificationType::BROWSER_THEME_CHANGED) {
347    // Update the spacing around the menu buttons
348    bool use_gtk = theme_service_->UseGtkTheme();
349    int border = use_gtk ? 0 : 2;
350    gtk_container_set_border_width(
351        GTK_CONTAINER(wrench_menu_button_->widget()), border);
352
353    // Force the height of the toolbar so we get the right amount of padding
354    // above and below the location bar. We always force the size of the widgets
355    // to either side of the location box, but we only force the location box
356    // size in chrome-theme mode because that's the only time we try to control
357    // the font size.
358    int toolbar_height = ShouldOnlyShowLocation() ?
359                         kToolbarHeightLocationBarOnly : kToolbarHeight;
360    gtk_container_foreach(GTK_CONTAINER(toolbar_), SetWidgetHeightRequest,
361                          GINT_TO_POINTER(toolbar_height));
362    gtk_widget_set_size_request(location_hbox_, -1,
363                                use_gtk ? -1 : toolbar_height);
364
365    // When using the GTK+ theme, we need to have the event box be visible so
366    // buttons don't get a halo color from the background.  When using Chromium
367    // themes, we want to let the background show through the toolbar.
368    gtk_event_box_set_visible_window(GTK_EVENT_BOX(event_box_), use_gtk);
369
370    if (use_gtk) {
371      // We need to manually update the icon if we are in GTK mode. (Note that
372      // we set the initial value in Init()).
373      gtk_image_set_from_pixbuf(
374          GTK_IMAGE(wrench_menu_image_),
375          theme_service_->GetRTLEnabledPixbufNamed(IDR_TOOLS));
376    }
377
378    UpdateRoundedness();
379  } else if (type == NotificationType::UPGRADE_RECOMMENDED) {
380    // Redraw the wrench menu to update the badge.
381    gtk_widget_queue_draw(wrench_menu_button_->widget());
382  } else if (type == NotificationType::ZOOM_LEVEL_CHANGED) {
383    // If our zoom level changed, we need to tell the menu to update its state,
384    // since the menu could still be open.
385    wrench_menu_->UpdateMenu();
386  } else {
387    NOTREACHED();
388  }
389}
390
391// BrowserToolbarGtk, public ---------------------------------------------------
392
393void BrowserToolbarGtk::SetProfile(Profile* profile) {
394  if (profile == profile_)
395    return;
396
397  profile_ = profile;
398  location_bar_->SetProfile(profile);
399}
400
401void BrowserToolbarGtk::UpdateTabContents(TabContents* contents,
402                                          bool should_restore_state) {
403  location_bar_->Update(should_restore_state ? contents : NULL);
404
405  if (actions_toolbar_.get())
406    actions_toolbar_->Update();
407}
408
409// BrowserToolbarGtk, private --------------------------------------------------
410
411void BrowserToolbarGtk::SetUpDragForHomeButton(bool enable) {
412  if (enable) {
413    gtk_drag_dest_set(home_->widget(), GTK_DEST_DEFAULT_ALL,
414                      NULL, 0, GDK_ACTION_COPY);
415    static const int targets[] = { ui::TEXT_PLAIN, ui::TEXT_URI_LIST, -1 };
416    ui::SetDestTargetList(home_->widget(), targets);
417
418    drop_handler_.reset(new ui::GtkSignalRegistrar());
419    drop_handler_->Connect(home_->widget(), "drag-data-received",
420                           G_CALLBACK(OnDragDataReceivedThunk), this);
421  } else {
422    gtk_drag_dest_unset(home_->widget());
423    drop_handler_.reset(NULL);
424  }
425}
426
427bool BrowserToolbarGtk::UpdateRoundedness() {
428  // We still round the corners if we are in chrome theme mode, but we do it by
429  // drawing theme resources rather than changing the physical shape of the
430  // widget.
431  bool should_be_rounded = theme_service_->UseGtkTheme() &&
432      window_->ShouldDrawContentDropShadow();
433
434  if (should_be_rounded == gtk_util::IsActingAsRoundedWindow(alignment_))
435    return false;
436
437  if (should_be_rounded) {
438    gtk_util::ActAsRoundedWindow(alignment_, GdkColor(), kToolbarCornerSize,
439                                 gtk_util::ROUNDED_TOP,
440                                 gtk_util::BORDER_NONE);
441  } else {
442    gtk_util::StopActingAsRoundedWindow(alignment_);
443  }
444
445  return true;
446}
447
448gboolean BrowserToolbarGtk::OnAlignmentExpose(GtkWidget* widget,
449                                              GdkEventExpose* e) {
450  // We may need to update the roundedness of the toolbar's top corners. In
451  // this case, don't draw; we'll be called again soon enough.
452  if (UpdateRoundedness())
453    return TRUE;
454
455  // We don't need to render the toolbar image in GTK mode.
456  if (theme_service_->UseGtkTheme())
457    return FALSE;
458
459  cairo_t* cr = gdk_cairo_create(GDK_DRAWABLE(widget->window));
460  gdk_cairo_rectangle(cr, &e->area);
461  cairo_clip(cr);
462
463  gfx::Point tabstrip_origin =
464      window_->tabstrip()->GetTabStripOriginForWidget(widget);
465  // Fill the entire region with the toolbar color.
466  GdkColor color = theme_service_->GetGdkColor(
467      ThemeService::COLOR_TOOLBAR);
468  gdk_cairo_set_source_color(cr, &color);
469  cairo_fill(cr);
470
471  // The horizontal size of the top left and right corner images.
472  const int kCornerWidth = 4;
473  // The thickness of the shadow outside the toolbar's bounds; the offset
474  // between the edge of the toolbar and where we anchor the corner images.
475  const int kShadowThickness = 2;
476
477  gfx::Rect area(e->area);
478  gfx::Rect right(widget->allocation.x + widget->allocation.width -
479                      kCornerWidth,
480                  widget->allocation.y - kShadowThickness,
481                  kCornerWidth,
482                  widget->allocation.height + kShadowThickness);
483  gfx::Rect left(widget->allocation.x - kShadowThickness,
484                 widget->allocation.y - kShadowThickness,
485                 kCornerWidth,
486                 widget->allocation.height + kShadowThickness);
487
488  if (window_->ShouldDrawContentDropShadow()) {
489    // Leave room to draw rounded corners.
490    area = area.Subtract(right).Subtract(left);
491  }
492
493  CairoCachedSurface* background = theme_service_->GetSurfaceNamed(
494      IDR_THEME_TOOLBAR, widget);
495  background->SetSource(cr, tabstrip_origin.x(), tabstrip_origin.y());
496  cairo_pattern_set_extend(cairo_get_source(cr), CAIRO_EXTEND_REPEAT);
497  cairo_rectangle(cr, area.x(), area.y(), area.width(), area.height());
498  cairo_fill(cr);
499
500  if (!window_->ShouldDrawContentDropShadow()) {
501    // The rest of this function is for rounded corners. Our work is done here.
502    cairo_destroy(cr);
503    return FALSE;
504  }
505
506  bool draw_left_corner = left.Intersects(gfx::Rect(e->area));
507  bool draw_right_corner = right.Intersects(gfx::Rect(e->area));
508
509  if (draw_left_corner || draw_right_corner) {
510    // Create a mask which is composed of the left and/or right corners.
511    cairo_surface_t* target = cairo_surface_create_similar(
512        cairo_get_target(cr),
513        CAIRO_CONTENT_COLOR_ALPHA,
514        widget->allocation.x + widget->allocation.width,
515        widget->allocation.y + widget->allocation.height);
516    cairo_t* copy_cr = cairo_create(target);
517
518    cairo_set_operator(copy_cr, CAIRO_OPERATOR_SOURCE);
519    if (draw_left_corner) {
520      CairoCachedSurface* left_corner = theme_service_->GetSurfaceNamed(
521          IDR_CONTENT_TOP_LEFT_CORNER_MASK, widget);
522      left_corner->SetSource(copy_cr, left.x(), left.y());
523      cairo_paint(copy_cr);
524    }
525    if (draw_right_corner) {
526      CairoCachedSurface* right_corner = theme_service_->GetSurfaceNamed(
527          IDR_CONTENT_TOP_RIGHT_CORNER_MASK, widget);
528      right_corner->SetSource(copy_cr, right.x(), right.y());
529      // We fill a path rather than just painting because we don't want to
530      // overwrite the left corner.
531      cairo_rectangle(copy_cr, right.x(), right.y(),
532                      right.width(), right.height());
533      cairo_fill(copy_cr);
534    }
535
536    // Draw the background. CAIRO_OPERATOR_IN uses the existing pixel data as
537    // an alpha mask.
538    background->SetSource(copy_cr, tabstrip_origin.x(), tabstrip_origin.y());
539    cairo_set_operator(copy_cr, CAIRO_OPERATOR_IN);
540    cairo_pattern_set_extend(cairo_get_source(copy_cr), CAIRO_EXTEND_REPEAT);
541    cairo_paint(copy_cr);
542    cairo_destroy(copy_cr);
543
544    // Copy the temporary surface to the screen.
545    cairo_set_source_surface(cr, target, 0, 0);
546    cairo_paint(cr);
547    cairo_surface_destroy(target);
548  }
549
550  cairo_destroy(cr);
551
552  return FALSE;  // Allow subwidgets to paint.
553}
554
555gboolean BrowserToolbarGtk::OnLocationHboxExpose(GtkWidget* location_hbox,
556                                                 GdkEventExpose* e) {
557  if (theme_service_->UseGtkTheme()) {
558    gtk_util::DrawTextEntryBackground(offscreen_entry_.get(),
559                                      location_hbox, &e->area,
560                                      &location_hbox->allocation);
561  }
562
563  return FALSE;
564}
565
566void BrowserToolbarGtk::OnButtonClick(GtkWidget* button) {
567  if ((button == back_->widget()) || (button == forward_->widget())) {
568    if (gtk_util::DispositionForCurrentButtonPressEvent() == CURRENT_TAB)
569      location_bar_->Revert();
570    return;
571  }
572
573  DCHECK(home_.get() && button == home_->widget()) <<
574      "Unexpected button click callback";
575  browser_->Home(gtk_util::DispositionForCurrentButtonPressEvent());
576}
577
578gboolean BrowserToolbarGtk::OnMenuButtonPressEvent(GtkWidget* button,
579                                                   GdkEventButton* event) {
580  if (event->button != 1)
581    return FALSE;
582
583  wrench_menu_button_->SetPaintOverride(GTK_STATE_ACTIVE);
584  wrench_menu_->PopupForWidget(button, event->button, event->time);
585
586  return TRUE;
587}
588
589void BrowserToolbarGtk::OnDragDataReceived(GtkWidget* widget,
590    GdkDragContext* drag_context, gint x, gint y,
591    GtkSelectionData* data, guint info, guint time) {
592  if (info != ui::TEXT_PLAIN) {
593    NOTIMPLEMENTED() << "Only support plain text drops for now, sorry!";
594    return;
595  }
596
597  GURL url(reinterpret_cast<char*>(data->data));
598  if (!url.is_valid())
599    return;
600
601  bool url_is_newtab = url.spec() == chrome::kChromeUINewTabURL;
602  home_page_is_new_tab_page_.SetValue(url_is_newtab);
603  if (!url_is_newtab)
604    home_page_.SetValue(url.spec());
605}
606
607void BrowserToolbarGtk::NotifyPrefChanged(const std::string* pref) {
608  if (!pref || *pref == prefs::kShowHomeButton) {
609    if (show_home_button_.GetValue() && !ShouldOnlyShowLocation()) {
610      gtk_widget_show(home_->widget());
611    } else {
612      gtk_widget_hide(home_->widget());
613    }
614  }
615
616  if (!pref ||
617      *pref == prefs::kHomePage ||
618      *pref == prefs::kHomePageIsNewTabPage)
619    SetUpDragForHomeButton(!home_page_.IsManaged() &&
620                           !home_page_is_new_tab_page_.IsManaged());
621}
622
623bool BrowserToolbarGtk::ShouldOnlyShowLocation() const {
624  // If we're a popup window, only show the location bar (omnibox).
625  return browser_->type() != Browser::TYPE_NORMAL;
626}
627
628gboolean BrowserToolbarGtk::OnWrenchMenuButtonExpose(GtkWidget* sender,
629                                                     GdkEventExpose* expose) {
630  const SkBitmap* badge = NULL;
631  if (UpgradeDetector::GetInstance()->notify_upgrade()) {
632    badge = theme_service_->GetBitmapNamed(IDR_UPDATE_BADGE);
633  } else {
634    return FALSE;
635  }
636
637  // Draw the chrome app menu icon onto the canvas.
638  gfx::CanvasSkiaPaint canvas(expose, false);
639  int x_offset = base::i18n::IsRTL() ? 0 :
640      sender->allocation.width - badge->width();
641  int y_offset = 0;
642  canvas.DrawBitmapInt(
643      *badge,
644      sender->allocation.x + x_offset,
645      sender->allocation.y + y_offset);
646
647  return FALSE;
648}
649