chrome/browser/ui/views/frame/browser_view_layout.cc

   1 // Copyright 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/views/frame/browser_view_layout.h"
   6
   7 #include "base/observer_list.h"
   8 #include "chrome/browser/profiles/profile.h"
   9 #include "chrome/browser/ui/browser.h"
  10 #include "chrome/browser/ui/browser_finder.h"
  11 #include "chrome/browser/ui/browser_window.h"
  12 #include "chrome/browser/ui/find_bar/find_bar.h"
  13 #include "chrome/browser/ui/find_bar/find_bar_controller.h"
  14 #include "chrome/browser/ui/search/search_model.h"
  15 #include "chrome/browser/ui/views/bookmarks/bookmark_bar_view.h"
  16 #include "chrome/browser/ui/views/download/download_shelf_view.h"
  17 #include "chrome/browser/ui/views/frame/browser_view_layout_delegate.h"
  18 #include "chrome/browser/ui/views/frame/contents_layout_manager.h"
  19 #include "chrome/browser/ui/views/frame/immersive_mode_controller.h"
  20 #include "chrome/browser/ui/views/frame/top_container_view.h"
  21 #include "chrome/browser/ui/views/fullscreen_exit_bubble_views.h"
  22 #include "chrome/browser/ui/views/infobars/infobar_container_view.h"
  23 #include "chrome/browser/ui/views/tabs/tab_strip.h"
  24 #include "components/web_modal/web_contents_modal_dialog_host.h"
  25 #include "ui/base/hit_test.h"
  26 #include "ui/gfx/point.h"
  27 #include "ui/gfx/scrollbar_size.h"
  28 #include "ui/gfx/size.h"
  29 #include "ui/views/controls/webview/webview.h"
  30 #include "ui/views/widget/widget.h"
  31 #include "ui/views/window/client_view.h"
  32
  33 using views::View;
  34 using web_modal::WebContentsModalDialogHost;
  35 using web_modal::ModalDialogHostObserver;
  36
  37 namespace {
  38
  39 // The visible height of the shadow above the tabs. Clicks in this area are
  40 // treated as clicks to the frame, rather than clicks to the tab.
  41 const int kTabShadowSize = 2;
  42 // The number of pixels the metro switcher is offset from the right edge.
  43 const int kWindowSwitcherOffsetX = 7;
  44 // The number of pixels the constrained window should overlap the bottom
  45 // of the omnibox.
  46 const int kConstrainedWindowOverlap = 3;
  47
  48 // Combines View::ConvertPointToTarget and View::HitTest for a given |point|.
  49 // Converts |point| from |src| to |dst| and hit tests it against |dst|. The
  50 // converted |point| can then be retrieved and used for additional tests.
  51 bool ConvertedHitTest(views::View* src, views::View* dst, gfx::Point* point) {
  52   DCHECK(src);
  53   DCHECK(dst);
  54   DCHECK(point);
  55   views::View::ConvertPointToTarget(src, dst, point);
  56   return dst->HitTestPoint(*point);
  57 }
  58
  59 }  // namespace
  60
  61 class BrowserViewLayout::WebContentsModalDialogHostViews
  62     : public WebContentsModalDialogHost {
  63  public:
  64   explicit WebContentsModalDialogHostViews(
  65       BrowserViewLayout* browser_view_layout)
  66           : browser_view_layout_(browser_view_layout) {
  67   }
  68
  69   virtual ~WebContentsModalDialogHostViews() {
  70     FOR_EACH_OBSERVER(ModalDialogHostObserver,
  71                       observer_list_,
  72                       OnHostDestroying());
  73   }
  74
  75   void NotifyPositionRequiresUpdate() {
  76     FOR_EACH_OBSERVER(ModalDialogHostObserver,
  77                       observer_list_,
  78                       OnPositionRequiresUpdate());
  79   }
  80
  81   virtual gfx::Point GetDialogPosition(const gfx::Size& size) OVERRIDE {
  82     views::View* view = browser_view_layout_->delegate_->GetContentsWebView();
  83     gfx::Rect content_area = view->ConvertRectToWidget(view->GetLocalBounds());
  84     const int middle_x = content_area.x() + content_area.width() / 2;
  85     const int top = browser_view_layout_->web_contents_modal_dialog_top_y_;
  86     return gfx::Point(middle_x - size.width() / 2, top);
  87   }
  88
  89   virtual gfx::Size GetMaximumDialogSize() OVERRIDE {
  90     views::View* view = browser_view_layout_->delegate_->GetContentsWebView();
  91     gfx::Rect content_area = view->ConvertRectToWidget(view->GetLocalBounds());
  92     const int top = browser_view_layout_->web_contents_modal_dialog_top_y_;
  93     return gfx::Size(content_area.width(), content_area.bottom() - top);
  94   }
  95
  96  private:
  97   virtual gfx::NativeView GetHostView() const OVERRIDE {
  98     gfx::NativeWindow window =
  99         browser_view_layout_->browser()->window()->GetNativeWindow();
 100     return views::Widget::GetWidgetForNativeWindow(window)->GetNativeView();
 101   }
 102
 103   // Add/remove observer.
 104   virtual void AddObserver(ModalDialogHostObserver* observer) OVERRIDE {
 105     observer_list_.AddObserver(observer);
 106   }
 107   virtual void RemoveObserver(ModalDialogHostObserver* observer) OVERRIDE {
 108     observer_list_.RemoveObserver(observer);
 109   }
 110
 111   BrowserViewLayout* const browser_view_layout_;
 112
 113   ObserverList<ModalDialogHostObserver> observer_list_;
 114
 115   DISALLOW_COPY_AND_ASSIGN(WebContentsModalDialogHostViews);
 116 };
 117
 118 // static
 119 const int BrowserViewLayout::kToolbarTabStripVerticalOverlap = 3;
 120
 121 ////////////////////////////////////////////////////////////////////////////////
 122 // BrowserViewLayout, public:
 123
 124 BrowserViewLayout::BrowserViewLayout()
 125     : browser_(NULL),
 126       browser_view_(NULL),
 127       top_container_(NULL),
 128       tab_strip_(NULL),
 129       toolbar_(NULL),
 130       bookmark_bar_(NULL),
 131       infobar_container_(NULL),
 132       contents_container_(NULL),
 133       contents_layout_manager_(NULL),
 134       download_shelf_(NULL),
 135       immersive_mode_controller_(NULL),
 136       dialog_host_(new WebContentsModalDialogHostViews(this)),
 137       web_contents_modal_dialog_top_y_(-1) {}
 138
 139 BrowserViewLayout::~BrowserViewLayout() {
 140 }
 141
 142 void BrowserViewLayout::Init(
 143     BrowserViewLayoutDelegate* delegate,
 144     Browser* browser,
 145     views::ClientView* browser_view,
 146     views::View* top_container,
 147     TabStrip* tab_strip,
 148     views::View* toolbar,
 149     InfoBarContainerView* infobar_container,
 150     views::View* contents_container,
 151     ContentsLayoutManager* contents_layout_manager,
 152     ImmersiveModeController* immersive_mode_controller) {
 153   delegate_.reset(delegate);
 154   browser_ = browser;
 155   browser_view_ = browser_view;
 156   top_container_ = top_container;
 157   tab_strip_ = tab_strip;
 158   toolbar_ = toolbar;
 159   infobar_container_ = infobar_container;
 160   contents_container_ = contents_container;
 161   contents_layout_manager_ = contents_layout_manager;
 162   immersive_mode_controller_ = immersive_mode_controller;
 163 }
 164
 165 WebContentsModalDialogHost*
 166     BrowserViewLayout::GetWebContentsModalDialogHost() {
 167   return dialog_host_.get();
 168 }
 169
 170 gfx::Size BrowserViewLayout::GetMinimumSize() {
 171   gfx::Size tabstrip_size(
 172       browser()->SupportsWindowFeature(Browser::FEATURE_TABSTRIP) ?
 173       tab_strip_->GetMinimumSize() : gfx::Size());
 174   gfx::Size toolbar_size(
 175       (browser()->SupportsWindowFeature(Browser::FEATURE_TOOLBAR) ||
 176        browser()->SupportsWindowFeature(Browser::FEATURE_LOCATIONBAR)) ?
 177            toolbar_->GetMinimumSize() : gfx::Size());
 178   if (tabstrip_size.height() && toolbar_size.height())
 179     toolbar_size.Enlarge(0, -kToolbarTabStripVerticalOverlap);
 180   gfx::Size bookmark_bar_size;
 181   if (bookmark_bar_ &&
 182       bookmark_bar_->visible() &&
 183       browser()->SupportsWindowFeature(Browser::FEATURE_BOOKMARKBAR)) {
 184     bookmark_bar_size = bookmark_bar_->GetMinimumSize();
 185     bookmark_bar_size.Enlarge(0, -bookmark_bar_->GetToolbarOverlap());
 186   }
 187   gfx::Size infobar_container_size(infobar_container_->GetMinimumSize());
 188   // TODO: Adjust the minimum height for the find bar.
 189
 190   gfx::Size contents_size(contents_container_->GetMinimumSize());
 191
 192   int min_height = delegate_->GetTopInsetInBrowserView() +
 193       tabstrip_size.height() + toolbar_size.height() +
 194       bookmark_bar_size.height() + infobar_container_size.height() +
 195       contents_size.height();
 196   int widths[] = {
 197         tabstrip_size.width(),
 198         toolbar_size.width(),
 199         bookmark_bar_size.width(),
 200         infobar_container_size.width(),
 201         contents_size.width() };
 202   int min_width = *std::max_element(&widths[0], &widths[arraysize(widths)]);
 203   return gfx::Size(min_width, min_height);
 204 }
 205
 206 gfx::Rect BrowserViewLayout::GetFindBarBoundingBox() const {
 207   // This function returns the area the Find Bar can be laid out within. This
 208   // basically implies the "user-perceived content area" of the browser
 209   // window excluding the vertical scrollbar. The "user-perceived content area"
 210   // excludes the detached bookmark bar (in the New Tab case) and any infobars
 211   // since they are not _visually_ connected to the Toolbar.
 212
 213   // First determine the bounding box of the content area in Widget
 214   // coordinates.
 215   gfx::Rect bounding_box = contents_container_->ConvertRectToWidget(
 216       contents_container_->GetLocalBounds());
 217
 218   gfx::Rect top_container_bounds = top_container_->ConvertRectToWidget(
 219       top_container_->GetLocalBounds());
 220
 221   int find_bar_y = 0;
 222   if (immersive_mode_controller_->IsEnabled() &&
 223       !immersive_mode_controller_->IsRevealed()) {
 224     // Position the find bar exactly below the top container. In immersive
 225     // fullscreen, when the top-of-window views are not revealed, only the
 226     // miniature immersive style tab strip is visible. Do not overlap the
 227     // find bar and the tab strip.
 228     find_bar_y = top_container_bounds.bottom();
 229   } else {
 230     // Position the find bar 1 pixel above the bottom of the top container
 231     // so that it occludes the border between the content area and the top
 232     // container and looks connected to the top container.
 233     find_bar_y = top_container_bounds.bottom() - 1;
 234   }
 235
 236   // Grow the height of |bounding_box| by the height of any elements between
 237   // the top container and |contents_container_| such as the detached bookmark
 238   // bar and any infobars.
 239   int height_delta = bounding_box.y() - find_bar_y;
 240   bounding_box.set_y(find_bar_y);
 241   bounding_box.set_height(std::max(0, bounding_box.height() + height_delta));
 242
 243   // Finally decrease the width of the bounding box by the width of
 244   // the vertical scroll bar.
 245   int scrollbar_width = gfx::scrollbar_size();
 246   bounding_box.set_width(std::max(0, bounding_box.width() - scrollbar_width));
 247   if (base::i18n::IsRTL())
 248     bounding_box.set_x(bounding_box.x() + scrollbar_width);
 249
 250   return bounding_box;
 251 }
 252
 253 int BrowserViewLayout::NonClientHitTest(const gfx::Point& point) {
 254   // Since the TabStrip only renders in some parts of the top of the window,
 255   // the un-obscured area is considered to be part of the non-client caption
 256   // area of the window. So we need to treat hit-tests in these regions as
 257   // hit-tests of the titlebar.
 258
 259   views::View* parent = browser_view_->parent();
 260
 261   gfx::Point point_in_browser_view_coords(point);
 262   views::View::ConvertPointToTarget(
 263       parent, browser_view_, &point_in_browser_view_coords);
 264   gfx::Point test_point(point);
 265
 266   // Determine if the TabStrip exists and is capable of being clicked on. We
 267   // might be a popup window without a TabStrip.
 268   if (delegate_->IsTabStripVisible()) {
 269     // See if the mouse pointer is within the bounds of the TabStrip.
 270     if (ConvertedHitTest(parent, tab_strip_, &test_point)) {
 271       if (tab_strip_->IsPositionInWindowCaption(test_point))
 272         return HTCAPTION;
 273       return HTCLIENT;
 274     }
 275
 276     // The top few pixels of the TabStrip are a drop-shadow - as we're pretty
 277     // starved of dragable area, let's give it to window dragging (this also
 278     // makes sense visually).
 279     views::Widget* widget = browser_view_->GetWidget();
 280     if (!(widget->IsMaximized() || widget->IsFullscreen()) &&
 281         (point_in_browser_view_coords.y() <
 282             (tab_strip_->y() + kTabShadowSize))) {
 283       // We return HTNOWHERE as this is a signal to our containing
 284       // NonClientView that it should figure out what the correct hit-test
 285       // code is given the mouse position...
 286       return HTNOWHERE;
 287     }
 288   }
 289
 290   // If the point's y coordinate is below the top of the toolbar and otherwise
 291   // within the bounds of this view, the point is considered to be within the
 292   // client area.
 293   gfx::Rect bv_bounds = browser_view_->bounds();
 294   bv_bounds.Offset(0, toolbar_->y());
 295   bv_bounds.set_height(bv_bounds.height() - toolbar_->y());
 296   if (bv_bounds.Contains(point))
 297     return HTCLIENT;
 298
 299   // If the point is within the bounds of the window switcher button, the point
 300   // is considered to be within the client area.
 301   views::View* window_switcher_button = delegate_->GetWindowSwitcherButton();
 302   if (window_switcher_button && window_switcher_button->visible()) {
 303     gfx::Point window_switcher_point(point_in_browser_view_coords);
 304     views::View::ConvertPointToTarget(browser_view_, window_switcher_button,
 305                                       &window_switcher_point);
 306     if (window_switcher_button->HitTestPoint(window_switcher_point))
 307       return HTCLIENT;
 308   }
 309
 310   // If the point's y coordinate is above the top of the toolbar, but neither
 311   // over the tabstrip nor over the window switcher button (per previous
 312   // checking in this function), then we consider it in the window caption
 313   // (e.g. the area to the right of the tabstrip underneath the window
 314   // controls). However, note that we DO NOT return HTCAPTION here, because
 315   // when the window is maximized the window controls will fall into this
 316   // space (since the BrowserView is sized to entire size of the window at that
 317   // point), and the HTCAPTION value will cause the window controls not to work.
 318   // So we return HTNOWHERE so that the caller will hit-test the window controls
 319   // before finally falling back to HTCAPTION.
 320   bv_bounds = browser_view_->bounds();
 321   bv_bounds.set_height(toolbar_->y());
 322   if (bv_bounds.Contains(point))
 323     return HTNOWHERE;
 324
 325   // If the point is somewhere else, delegate to the default implementation.
 326   return browser_view_->views::ClientView::NonClientHitTest(point);
 327 }
 328
 329 //////////////////////////////////////////////////////////////////////////////
 330 // BrowserViewLayout, views::LayoutManager implementation:
 331
 332 void BrowserViewLayout::Layout(views::View* browser_view) {
 333   vertical_layout_rect_ = browser_view->GetLocalBounds();
 334   int top = delegate_->GetTopInsetInBrowserView();
 335   top = LayoutTabStripRegion(top);
 336   if (delegate_->IsTabStripVisible()) {
 337     int x = tab_strip_->GetMirroredX() +
 338         browser_view_->GetMirroredX() +
 339         delegate_->GetThemeBackgroundXInset();
 340     int y = browser_view_->y() + delegate_->GetTopInsetInBrowserView();
 341     tab_strip_->SetBackgroundOffset(gfx::Point(x, y));
 342   }
 343   top = LayoutToolbar(top);
 344
 345   top = LayoutBookmarkAndInfoBars(top, browser_view->y());
 346
 347   // Top container requires updated toolbar and bookmark bar to compute bounds.
 348   UpdateTopContainerBounds();
 349
 350   int bottom = LayoutDownloadShelf(browser_view->height());
 351   // Treat a detached bookmark bar as if the web contents container is shifted
 352   // upwards and overlaps it.
 353   int active_top_margin = GetContentsOffsetForBookmarkBar();
 354   contents_layout_manager_->SetActiveTopMargin(active_top_margin);
 355   top -= active_top_margin;
 356   LayoutContentsContainerView(top, bottom);
 357
 358   // This must be done _after_ we lay out the WebContents since this
 359   // code calls back into us to find the bounding box the find bar
 360   // must be laid out within, and that code depends on the
 361   // TabContentsContainer's bounds being up to date.
 362   if (browser()->HasFindBarController()) {
 363     browser()->GetFindBarController()->find_bar()->MoveWindowIfNecessary(
 364         gfx::Rect(), true);
 365   }
 366
 367   // Adjust the fullscreen exit bubble bounds for |top_container_|'s new bounds.
 368   // This makes the fullscreen exit bubble look like it animates with
 369   // |top_container_| in immersive fullscreen.
 370   FullscreenExitBubbleViews* fullscreen_exit_bubble =
 371       delegate_->GetFullscreenExitBubble();
 372   if (fullscreen_exit_bubble)
 373     fullscreen_exit_bubble->RepositionIfVisible();
 374
 375   // Adjust any hosted dialogs if the browser's dialog hosting bounds changed.
 376   const gfx::Rect dialog_bounds(dialog_host_->GetDialogPosition(gfx::Size()),
 377                                 dialog_host_->GetMaximumDialogSize());
 378   if (latest_dialog_bounds_ != dialog_bounds) {
 379     latest_dialog_bounds_ = dialog_bounds;
 380     dialog_host_->NotifyPositionRequiresUpdate();
 381   }
 382 }
 383
 384 // Return the preferred size which is the size required to give each
 385 // children their respective preferred size.
 386 gfx::Size BrowserViewLayout::GetPreferredSize(views::View* host) {
 387   return gfx::Size();
 388 }
 389
 390 //////////////////////////////////////////////////////////////////////////////
 391 // BrowserViewLayout, private:
 392
 393 int BrowserViewLayout::LayoutTabStripRegion(int top) {
 394   if (!delegate_->IsTabStripVisible()) {
 395     tab_strip_->SetVisible(false);
 396     tab_strip_->SetBounds(0, 0, 0, 0);
 397     return top;
 398   }
 399   // This retrieves the bounds for the tab strip based on whether or not we show
 400   // anything to the left of it, like the incognito avatar.
 401   gfx::Rect tabstrip_bounds(delegate_->GetBoundsForTabStripInBrowserView());
 402
 403   tab_strip_->SetVisible(true);
 404   tab_strip_->SetBoundsRect(tabstrip_bounds);
 405   int bottom = tabstrip_bounds.bottom();
 406
 407   // The metro window switcher sits at the far right edge of the tabstrip
 408   // a |kWindowSwitcherOffsetX| pixels from the right edge.
 409   // Only visible if there is more than one type of window to switch between.
 410   // TODO(mad): update this code when more window types than just incognito
 411   // and regular are available.
 412   views::View* switcher_button = delegate_->GetWindowSwitcherButton();
 413   if (switcher_button) {
 414     if (browser()->profile()->HasOffTheRecordProfile() &&
 415         chrome::FindBrowserWithProfile(
 416             browser()->profile()->GetOriginalProfile(),
 417             browser()->host_desktop_type()) != NULL) {
 418       switcher_button->SetVisible(true);
 419       int width = browser_view_->width();
 420       gfx::Size ps = switcher_button->GetPreferredSize();
 421       if (width > ps.width()) {
 422         switcher_button->SetBounds(width - ps.width() - kWindowSwitcherOffsetX,
 423                                    0,
 424                                    ps.width(),
 425                                    ps.height());
 426       }
 427     } else {
 428       // We hide the button if the incognito profile is not alive.
 429       // Note that Layout() is not called to all browser windows automatically
 430       // when a profile goes away but we rely in the metro_driver.dll to call
 431       // ::SetWindowPos( , .. SWP_SHOWWINDOW) which causes this function to
 432       // be called again. This works both in showing or hidding the button.
 433       switcher_button->SetVisible(false);
 434     }
 435   }
 436
 437   return bottom;
 438 }
 439
 440 int BrowserViewLayout::LayoutToolbar(int top) {
 441   int browser_view_width = vertical_layout_rect_.width();
 442   bool toolbar_visible = delegate_->IsToolbarVisible();
 443   int y = top;
 444   y -= (toolbar_visible && delegate_->IsTabStripVisible()) ?
 445         kToolbarTabStripVerticalOverlap : 0;
 446   int height = toolbar_visible ? toolbar_->GetPreferredSize().height() : 0;
 447   toolbar_->SetVisible(toolbar_visible);
 448   toolbar_->SetBounds(vertical_layout_rect_.x(), y, browser_view_width, height);
 449
 450   return y + height;
 451 }
 452
 453 int BrowserViewLayout::LayoutBookmarkAndInfoBars(int top, int browser_view_y) {
 454   web_contents_modal_dialog_top_y_ =
 455       top + browser_view_y - kConstrainedWindowOverlap;
 456
 457   if (bookmark_bar_) {
 458     // If we're showing the Bookmark bar in detached style, then we
 459     // need to show any Info bar _above_ the Bookmark bar, since the
 460     // Bookmark bar is styled to look like it's part of the page.
 461     if (bookmark_bar_->IsDetached()) {
 462       web_contents_modal_dialog_top_y_ =
 463           top + browser_view_y - kConstrainedWindowOverlap;
 464       return LayoutBookmarkBar(LayoutInfoBar(top));
 465     }
 466     // Otherwise, Bookmark bar first, Info bar second.
 467     top = std::max(toolbar_->bounds().bottom(), LayoutBookmarkBar(top));
 468   }
 469
 470   return LayoutInfoBar(top);
 471 }
 472
 473 int BrowserViewLayout::LayoutBookmarkBar(int top) {
 474   int y = top;
 475   if (!delegate_->IsBookmarkBarVisible()) {
 476     bookmark_bar_->SetVisible(false);
 477     // TODO(jamescook): Don't change the bookmark bar height when it is
 478     // invisible, so we can use its height for layout even in that state.
 479     bookmark_bar_->SetBounds(0, y, browser_view_->width(), 0);
 480     return y;
 481   }
 482
 483   bookmark_bar_->set_infobar_visible(InfobarVisible());
 484   int bookmark_bar_height = bookmark_bar_->GetPreferredSize().height();
 485   y -= bookmark_bar_->GetToolbarOverlap();
 486   bookmark_bar_->SetBounds(vertical_layout_rect_.x(),
 487                            y,
 488                            vertical_layout_rect_.width(),
 489                            bookmark_bar_height);
 490   // Set visibility after setting bounds, as the visibility update uses the
 491   // bounds to determine if the mouse is hovering over a button.
 492   bookmark_bar_->SetVisible(true);
 493   return y + bookmark_bar_height;
 494 }
 495
 496 int BrowserViewLayout::LayoutInfoBar(int top) {
 497   // In immersive fullscreen, the infobar always starts near the top of the
 498   // screen, just under the "light bar" rectangular stripes.
 499   if (immersive_mode_controller_->IsEnabled()) {
 500     top = immersive_mode_controller_->ShouldHideTabIndicators()
 501               ? browser_view_->y()
 502               : browser_view_->y() + TabStrip::GetImmersiveHeight();
 503   }
 504   // Raise the |infobar_container_| by its vertical overlap.
 505   infobar_container_->SetVisible(InfobarVisible());
 506   int height;
 507   int overlapped_top = top - infobar_container_->GetVerticalOverlap(&height);
 508   infobar_container_->SetBounds(vertical_layout_rect_.x(),
 509                                 overlapped_top,
 510                                 vertical_layout_rect_.width(),
 511                                 height);
 512   return overlapped_top + height;
 513 }
 514
 515 void BrowserViewLayout::LayoutContentsContainerView(int top, int bottom) {
 516   // |contents_container_| contains web page contents and devtools.
 517   // See browser_view.h for details.
 518   gfx::Rect contents_container_bounds(vertical_layout_rect_.x(),
 519                                       top,
 520                                       vertical_layout_rect_.width(),
 521                                       std::max(0, bottom - top));
 522   contents_container_->SetBoundsRect(contents_container_bounds);
 523 }
 524
 525 void BrowserViewLayout::UpdateTopContainerBounds() {
 526   gfx::Rect top_container_bounds(top_container_->GetPreferredSize());
 527
 528   // If the immersive mode controller is animating the top container, it may be
 529   // partly offscreen. The top container is positioned relative to the top of
 530   // the client view instead of relative to GetTopInsetInBrowserView() because
 531   // the top container paints parts of the frame (title, window controls) during
 532   // an immersive reveal.
 533   top_container_bounds.set_y(
 534       immersive_mode_controller_->GetTopContainerVerticalOffset(
 535           top_container_bounds.size()));
 536   top_container_->SetBoundsRect(top_container_bounds);
 537 }
 538
 539 int BrowserViewLayout::GetContentsOffsetForBookmarkBar() {
 540   // If the bookmark bar is hidden or attached to the omnibox the web contents
 541   // will appear directly underneath it and does not need an offset.
 542   if (!bookmark_bar_ ||
 543       !delegate_->IsBookmarkBarVisible() ||
 544       !bookmark_bar_->IsDetached()) {
 545     return 0;
 546   }
 547
 548   // Offset for the detached bookmark bar.
 549   return bookmark_bar_->height() -
 550       bookmark_bar_->GetFullyDetachedToolbarOverlap();
 551 }
 552
 553 int BrowserViewLayout::LayoutDownloadShelf(int bottom) {
 554   if (delegate_->DownloadShelfNeedsLayout()) {
 555     bool visible = browser()->SupportsWindowFeature(
 556         Browser::FEATURE_DOWNLOADSHELF);
 557     DCHECK(download_shelf_);
 558     int height = visible ? download_shelf_->GetPreferredSize().height() : 0;
 559     download_shelf_->SetVisible(visible);
 560     download_shelf_->SetBounds(vertical_layout_rect_.x(), bottom - height,
 561                                vertical_layout_rect_.width(), height);
 562     download_shelf_->Layout();
 563     bottom -= height;
 564   }
 565   return bottom;
 566 }
 567
 568 bool BrowserViewLayout::InfobarVisible() const {
 569   // Cast to a views::View to access GetPreferredSize().
 570   views::View* infobar_container = infobar_container_;
 571   // NOTE: Can't check if the size IsEmpty() since it's always 0-width.
 572   return browser_->SupportsWindowFeature(Browser::FEATURE_INFOBAR) &&
 573       (infobar_container->GetPreferredSize().height() != 0);
 574 }