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

   1 // Copyright 2013 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/opaque_browser_frame_view_layout.h"
   6
   7 #include "base/command_line.h"
   8 #include "chrome/browser/profiles/profiles_state.h"
   9 #include "chrome/browser/ui/views/profiles/avatar_menu_button.h"
  10 #include "chrome/browser/ui/views/tabs/tab_strip.h"
  11 #include "chrome/common/chrome_switches.h"
  12 #include "components/signin/core/common/profile_management_switches.h"
  13 #include "ui/gfx/font.h"
  14 #include "ui/views/controls/button/image_button.h"
  15 #include "ui/views/controls/label.h"
  16
  17 #if defined(ENABLE_SUPERVISED_USERS)
  18 #include "chrome/browser/ui/views/profiles/supervised_user_avatar_label.h"
  19 #endif
  20
  21 namespace {
  22
  23 // Besides the frame border, there's another 9 px of empty space atop the
  24 // window in restored mode, to use to drag the window around.
  25 const int kNonClientRestoredExtraThickness = 9;
  26
  27 // The titlebar never shrinks too short to show the caption button plus some
  28 // padding below it.
  29 const int kCaptionButtonHeightWithPadding = 19;
  30
  31 // There is a 5 px gap between the title text and the caption buttons.
  32 const int kTitleLogoSpacing = 5;
  33
  34 // The frame border is only visible in restored mode and is hardcoded to 4 px on
  35 // each side regardless of the system window border size.
  36 const int kFrameBorderThickness = 4;
  37
  38 // The titlebar has a 2 px 3D edge along the top and bottom.
  39 const int kTitlebarTopAndBottomEdgeThickness = 2;
  40
  41 // The icon is inset 2 px from the left frame border.
  42 const int kIconLeftSpacing = 2;
  43
  44 // There is a 4 px gap between the icon and the title text.
  45 const int kIconTitleSpacing = 4;
  46
  47 // The avatar ends 2 px above the bottom of the tabstrip (which, given the
  48 // way the tabstrip draws its bottom edge, will appear like a 1 px gap to the
  49 // user).
  50 const int kAvatarBottomSpacing = 2;
  51
  52 // Space between the frame border and the edge of the avatar.
  53 const int kAvatarOuterSpacing = 2;
  54
  55 // Space between the edge of the avatar and the tabstrip.
  56 const int kAvatarInnerSpacing = 4;
  57
  58 #if defined(ENABLE_SUPERVISED_USERS)
  59 // Space between the trailing edge of the avatar label and the tabstrip.
  60 const int kSupervisedUserAvatarLabelInnerSpacing = 10;
  61 #endif
  62
  63 // How far the new avatar button is from the closest caption button.
  64 const int kNewAvatarButtonOffset = 5;
  65
  66 // When the title bar is in its normal two row mode (usually the case for
  67 // restored windows), the New Tab button isn't at the same height as the caption
  68 // buttons, but the space will look cluttered if it actually slides under them,
  69 // so we stop it when the gap between the two is down to 5 px.
  70 const int kNewTabCaptionNormalSpacing = 5;
  71
  72 // When the title bar is condensed to one row (as when maximized), the New Tab
  73 // button and the caption buttons are at similar vertical coordinates, so we
  74 // need to reserve a larger, 16 px gap to avoid looking too cluttered.
  75 const int kNewTabCaptionCondensedSpacing = 16;
  76
  77 // If there are no caption buttons to the right of the New Tab button, we
  78 // reserve a small 5px gap, regardless of whether the window is maximized. This
  79 // overrides the two previous constants.
  80 const int kNewTabNoCaptionButtonsSpacing = 5;
  81
  82 // The top 3 px of the tabstrip is shadow; in maximized mode we push this off
  83 // the top of the screen so the tabs appear flush against the screen edge.
  84 const int kTabstripTopShadowThickness = 3;
  85
  86 // How far to indent the tabstrip from the left side of the screen when there
  87 // is no avatar icon.
  88 const int kTabStripIndent = -6;
  89
  90 #if defined(OS_LINUX) && !defined(OS_CHROMEOS)
  91 // Default extra space between the top of the frame and the top of the window
  92 // caption buttons.
  93 const int kExtraCaption = 2;
  94
  95 // Default extra spacing between individual window caption buttons.
  96 const int kCaptionButtonSpacing = 2;
  97 #else
  98 const int kExtraCaption = 0;
  99 const int kCaptionButtonSpacing = 0;
 100 #endif
 101
 102 }  // namespace
 103
 104 ///////////////////////////////////////////////////////////////////////////////
 105 // OpaqueBrowserFrameView, public:
 106
 107 OpaqueBrowserFrameViewLayout::OpaqueBrowserFrameViewLayout(
 108     OpaqueBrowserFrameViewLayoutDelegate* delegate)
 109     : delegate_(delegate),
 110       leading_button_start_(0),
 111       trailing_button_start_(0),
 112       minimum_size_for_buttons_(0),
 113       has_leading_buttons_(false),
 114       has_trailing_buttons_(false),
 115       extra_caption_y_(kExtraCaption),
 116       window_caption_spacing_(kCaptionButtonSpacing),
 117       minimize_button_(nullptr),
 118       maximize_button_(nullptr),
 119       restore_button_(nullptr),
 120       close_button_(nullptr),
 121       window_icon_(nullptr),
 122       window_title_(nullptr),
 123 #if defined(ENABLE_SUPERVISED_USERS)
 124       supervised_user_avatar_label_(nullptr),
 125 #endif
 126       avatar_button_(nullptr),
 127       new_avatar_button_(nullptr) {
 128   trailing_buttons_.push_back(views::FRAME_BUTTON_MINIMIZE);
 129   trailing_buttons_.push_back(views::FRAME_BUTTON_MAXIMIZE);
 130   trailing_buttons_.push_back(views::FRAME_BUTTON_CLOSE);
 131 }
 132
 133 OpaqueBrowserFrameViewLayout::~OpaqueBrowserFrameViewLayout() {}
 134
 135 void OpaqueBrowserFrameViewLayout::SetButtonOrdering(
 136     const std::vector<views::FrameButton>& leading_buttons,
 137     const std::vector<views::FrameButton>& trailing_buttons) {
 138   leading_buttons_ = leading_buttons;
 139   trailing_buttons_ = trailing_buttons;
 140 }
 141
 142 gfx::Rect OpaqueBrowserFrameViewLayout::GetBoundsForTabStrip(
 143     const gfx::Size& tabstrip_preferred_size,
 144     int available_width) const {
 145   available_width -= trailing_button_start_;
 146   available_width -= leading_button_start_;
 147
 148   const int caption_spacing = NewTabCaptionSpacing();
 149   const int tabstrip_width = available_width - caption_spacing;
 150   gfx::Rect bounds(leading_button_start_, GetTabStripInsetsTop(false),
 151                    std::max(0, tabstrip_width),
 152                    tabstrip_preferred_size.height());
 153
 154   int leading_tabstrip_indent = kTabStripIndent;
 155   if (delegate_->ShouldShowAvatar() && !ShouldAvatarBeOnRight()) {
 156 #if defined(ENABLE_SUPERVISED_USERS)
 157     if (supervised_user_avatar_label_ &&
 158         supervised_user_avatar_label_->bounds().width())
 159       leading_tabstrip_indent += kSupervisedUserAvatarLabelInnerSpacing;
 160     else
 161       leading_tabstrip_indent += kAvatarInnerSpacing;
 162 #else
 163     leading_tabstrip_indent += kAvatarInnerSpacing;
 164 #endif
 165   }
 166   bounds.Inset(leading_tabstrip_indent, 0, 0, 0);
 167   return bounds;
 168 }
 169
 170 gfx::Size OpaqueBrowserFrameViewLayout::GetMinimumSize(
 171     int available_width) const {
 172   gfx::Size min_size = delegate_->GetBrowserViewMinimumSize();
 173   int border_thickness = NonClientBorderThickness();
 174   min_size.Enlarge(2 * border_thickness,
 175                    NonClientTopBorderHeight(false) + border_thickness);
 176
 177   // Ensure that we can, at minimum, hold our window controls and avatar icon.
 178   min_size.set_width(std::max(min_size.width(), minimum_size_for_buttons_));
 179
 180   // Ensure that the minimum width is enough to hold a minimum width tab strip
 181   // at its usual insets.
 182   if (delegate_->IsTabStripVisible()) {
 183     gfx::Size preferred_size = delegate_->GetTabstripPreferredSize();
 184     const int min_tabstrip_width = preferred_size.width();
 185     const int caption_spacing = NewTabCaptionSpacing();
 186     min_size.Enlarge(min_tabstrip_width + caption_spacing, 0);
 187   }
 188
 189   return min_size;
 190 }
 191
 192 gfx::Rect OpaqueBrowserFrameViewLayout::GetWindowBoundsForClientBounds(
 193     const gfx::Rect& client_bounds) const {
 194   int top_height = NonClientTopBorderHeight(false);
 195   int border_thickness = NonClientBorderThickness();
 196   return gfx::Rect(std::max(0, client_bounds.x() - border_thickness),
 197                    std::max(0, client_bounds.y() - top_height),
 198                    client_bounds.width() + (2 * border_thickness),
 199                    client_bounds.height() + top_height + border_thickness);
 200 }
 201
 202 int OpaqueBrowserFrameViewLayout::FrameBorderThickness(bool restored) const {
 203   return (!restored && (IsTitleBarCondensed() ||
 204                         delegate_->IsFullscreen())) ?
 205       0 : kFrameBorderThickness;
 206 }
 207
 208 int OpaqueBrowserFrameViewLayout::NonClientBorderThickness() const {
 209   // When we fill the screen, we don't show a client edge.
 210   return FrameBorderThickness(false) +
 211       ((IsTitleBarCondensed() || delegate_->IsFullscreen()) ?
 212        0 : views::NonClientFrameView::kClientEdgeThickness);
 213 }
 214
 215 int OpaqueBrowserFrameViewLayout::NonClientTopBorderHeight(
 216     bool restored) const {
 217   if (delegate_->ShouldShowWindowTitle()) {
 218     return std::max(FrameBorderThickness(restored) + delegate_->GetIconSize(),
 219         CaptionButtonY(restored) + kCaptionButtonHeightWithPadding) +
 220         TitlebarBottomThickness(restored);
 221   }
 222
 223   int thickness = FrameBorderThickness(restored);
 224   if (!restored && delegate_->IsTabStripVisible() &&
 225       (!delegate_->ShouldLeaveOffsetNearTopBorder() || IsTitleBarCondensed())) {
 226     thickness -= kTabstripTopShadowThickness;
 227   }
 228   return thickness;
 229 }
 230
 231 int OpaqueBrowserFrameViewLayout::GetTabStripInsetsTop(bool restored) const {
 232   return NonClientTopBorderHeight(restored) + ((!restored &&
 233       (!delegate_->ShouldLeaveOffsetNearTopBorder() ||
 234       IsTitleBarCondensed() ||
 235       delegate_->IsFullscreen())) ?
 236       0 : kNonClientRestoredExtraThickness);
 237 }
 238
 239 int OpaqueBrowserFrameViewLayout::TitlebarBottomThickness(bool restored) const {
 240   return kTitlebarTopAndBottomEdgeThickness +
 241       ((!restored && IsTitleBarCondensed()) ? 0 :
 242        views::NonClientFrameView::kClientEdgeThickness);
 243 }
 244
 245 int OpaqueBrowserFrameViewLayout::CaptionButtonY(bool restored) const {
 246   // Maximized buttons start at window top, since the window has no border. This
 247   // offset is for the image (the actual clickable bounds extend all the way to
 248   // the top to take Fitts' Law into account).
 249   return ((!restored && IsTitleBarCondensed()) ?
 250       FrameBorderThickness(false) :
 251           views::NonClientFrameView::kFrameShadowThickness) + extra_caption_y_;
 252 }
 253
 254 gfx::Rect OpaqueBrowserFrameViewLayout::IconBounds() const {
 255   return window_icon_bounds_;
 256 }
 257
 258 gfx::Rect OpaqueBrowserFrameViewLayout::CalculateClientAreaBounds(
 259     int width,
 260     int height) const {
 261   int top_height = NonClientTopBorderHeight(false);
 262   int border_thickness = NonClientBorderThickness();
 263   return gfx::Rect(border_thickness, top_height,
 264                    std::max(0, width - (2 * border_thickness)),
 265                    std::max(0, height - top_height - border_thickness));
 266 }
 267
 268 bool OpaqueBrowserFrameViewLayout::IsTitleBarCondensed() const {
 269   // If there are no caption buttons, there is no need to have an uncondensed
 270   // title bar. If the window is maximized, the title bar is condensed
 271   // regardless of whether there are caption buttons.
 272   return !delegate_->ShouldShowCaptionButtons() || delegate_->IsMaximized();
 273 }
 274
 275 ///////////////////////////////////////////////////////////////////////////////
 276 // OpaqueBrowserFrameView, private:
 277
 278 bool OpaqueBrowserFrameViewLayout::ShouldAvatarBeOnRight() const {
 279   // The avatar should be shown either on the end of the left or the beginning
 280   // of the right depending on which side has fewer buttons.
 281   return trailing_buttons_.size() < leading_buttons_.size();
 282 }
 283
 284 int OpaqueBrowserFrameViewLayout::NewTabCaptionSpacing() const {
 285   return has_trailing_buttons_
 286              ? (IsTitleBarCondensed() ? kNewTabCaptionCondensedSpacing
 287                                       : kNewTabCaptionNormalSpacing)
 288              : kNewTabNoCaptionButtonsSpacing;
 289 }
 290
 291 void OpaqueBrowserFrameViewLayout::LayoutWindowControls(views::View* host) {
 292   int caption_y = CaptionButtonY(false);
 293
 294   // Keep a list of all buttons that we don't show.
 295   std::vector<views::FrameButton> buttons_not_shown;
 296   buttons_not_shown.push_back(views::FRAME_BUTTON_MAXIMIZE);
 297   buttons_not_shown.push_back(views::FRAME_BUTTON_MINIMIZE);
 298   buttons_not_shown.push_back(views::FRAME_BUTTON_CLOSE);
 299
 300   if (delegate_->ShouldShowCaptionButtons()) {
 301     for (std::vector<views::FrameButton>::const_iterator it =
 302              leading_buttons_.begin(); it != leading_buttons_.end(); ++it) {
 303       ConfigureButton(host, *it, ALIGN_LEADING, caption_y);
 304       buttons_not_shown.erase(
 305           std::remove(buttons_not_shown.begin(), buttons_not_shown.end(), *it),
 306           buttons_not_shown.end());
 307     }
 308
 309     for (std::vector<views::FrameButton>::const_reverse_iterator it =
 310              trailing_buttons_.rbegin(); it != trailing_buttons_.rend(); ++it) {
 311       ConfigureButton(host, *it, ALIGN_TRAILING, caption_y);
 312       buttons_not_shown.erase(
 313           std::remove(buttons_not_shown.begin(), buttons_not_shown.end(), *it),
 314           buttons_not_shown.end());
 315     }
 316   }
 317
 318   for (std::vector<views::FrameButton>::const_iterator it =
 319            buttons_not_shown.begin(); it != buttons_not_shown.end(); ++it) {
 320     HideButton(*it);
 321   }
 322 }
 323
 324 void OpaqueBrowserFrameViewLayout::LayoutTitleBar(views::View* host) {
 325   bool use_hidden_icon_location = true;
 326
 327   int size = delegate_->GetIconSize();
 328   int frame_thickness = FrameBorderThickness(false);
 329   bool should_show_icon = delegate_->ShouldShowWindowIcon() && window_icon_;
 330   bool should_show_title = delegate_->ShouldShowWindowTitle() && window_title_;
 331
 332   if (should_show_icon || should_show_title) {
 333     use_hidden_icon_location = false;
 334
 335     // Our frame border has a different "3D look" than Windows'.  Theirs has
 336     // a more complex gradient on the top that they push their icon/title
 337     // below; then the maximized window cuts this off and the icon/title are
 338     // centered in the remaining space.  Because the apparent shape of our
 339     // border is simpler, using the same positioning makes things look
 340     // slightly uncentered with restored windows, so when the window is
 341     // restored, instead of calculating the remaining space from below the
 342     // frame border, we calculate from below the 3D edge.
 343     int unavailable_px_at_top = IsTitleBarCondensed() ?
 344         frame_thickness : kTitlebarTopAndBottomEdgeThickness;
 345     // When the icon is shorter than the minimum space we reserve for the
 346     // caption button, we vertically center it.  We want to bias rounding to
 347     // put extra space above the icon, since the 3D edge (+ client edge, for
 348     // restored windows) below looks (to the eye) more like additional space
 349     // than does the 3D edge (or nothing at all, for maximized windows)
 350     // above; hence the +1.
 351     int y = unavailable_px_at_top + (NonClientTopBorderHeight(false) -
 352                                      unavailable_px_at_top - size -
 353                                      TitlebarBottomThickness(false) + 1) / 2;
 354
 355     window_icon_bounds_ = gfx::Rect(leading_button_start_ + kIconLeftSpacing, y,
 356                                     size, size);
 357     leading_button_start_ += size + kIconLeftSpacing;
 358     minimum_size_for_buttons_ += size + kIconLeftSpacing;
 359   }
 360
 361   if (should_show_icon)
 362     window_icon_->SetBoundsRect(window_icon_bounds_);
 363
 364   if (window_title_) {
 365     window_title_->SetVisible(should_show_title);
 366     if (should_show_title) {
 367       window_title_->SetText(delegate_->GetWindowTitle());
 368
 369       int text_width = std::max(
 370           0, host->width() - trailing_button_start_ - kTitleLogoSpacing -
 371           leading_button_start_ - kIconTitleSpacing);
 372       window_title_->SetBounds(leading_button_start_ + kIconTitleSpacing,
 373                                window_icon_bounds_.y(),
 374                                text_width, window_icon_bounds_.height());
 375       leading_button_start_ += text_width + kIconTitleSpacing;
 376     }
 377   }
 378
 379   if (use_hidden_icon_location) {
 380     if (has_leading_buttons_) {
 381       // There are window button icons on the left. Don't size the hidden window
 382       // icon that people can double click on to close the window.
 383       window_icon_bounds_ = gfx::Rect();
 384     } else {
 385       // We set the icon bounds to a small rectangle in the top leading corner
 386       // if there are no icons on the leading side.
 387       window_icon_bounds_ = gfx::Rect(
 388           frame_thickness + kIconLeftSpacing, frame_thickness, size, size);
 389     }
 390   }
 391 }
 392
 393 void OpaqueBrowserFrameViewLayout::LayoutNewStyleAvatar(views::View* host) {
 394   DCHECK(switches::IsNewAvatarMenu());
 395   if (!new_avatar_button_)
 396     return;
 397
 398   int button_width = new_avatar_button_->GetPreferredSize().width();
 399   int button_width_with_offset = button_width + kNewAvatarButtonOffset;
 400
 401   int button_x =
 402       host->width() - trailing_button_start_ - button_width_with_offset;
 403   int button_y = CaptionButtonY(!IsTitleBarCondensed());
 404
 405   minimum_size_for_buttons_ += button_width_with_offset;
 406   trailing_button_start_ += button_width_with_offset;
 407
 408   // In non-maximized mode, allow the new tab button to completely slide under
 409   // the avatar button.
 410   if (!IsTitleBarCondensed()) {
 411     trailing_button_start_ -=
 412         TabStrip::kNewTabButtonAssetWidth + kNewTabCaptionNormalSpacing;
 413   }
 414
 415   // Do not include the 1px padding that is added for the caption buttons.
 416   new_avatar_button_->SetBounds(
 417       button_x, button_y, button_width, kCaptionButtonHeightWithPadding - 1);
 418 }
 419
 420 void OpaqueBrowserFrameViewLayout::LayoutAvatar(views::View* host) {
 421   // Even though the avatar is used for both incognito and profiles we always
 422   // use the incognito icon to layout the avatar button. The profile icon
 423   // can be customized so we can't depend on its size to perform layout.
 424   gfx::ImageSkia incognito_icon = delegate_->GetOTRAvatarIcon();
 425
 426   bool avatar_on_right = ShouldAvatarBeOnRight();
 427   int avatar_bottom = GetTabStripInsetsTop(false) +
 428       delegate_->GetTabStripHeight() - kAvatarBottomSpacing;
 429   int avatar_restored_y = avatar_bottom - incognito_icon.height();
 430   int avatar_x = avatar_on_right ?
 431       host->width() - trailing_button_start_ - kAvatarOuterSpacing -
 432           incognito_icon.width() :
 433       leading_button_start_ + kAvatarOuterSpacing;
 434   int avatar_y = IsTitleBarCondensed() ?
 435       (NonClientTopBorderHeight(false) + kTabstripTopShadowThickness) :
 436       avatar_restored_y;
 437   avatar_bounds_.SetRect(
 438       avatar_x,
 439       avatar_y,
 440       incognito_icon.width(),
 441       delegate_->ShouldShowAvatar() ? (avatar_bottom - avatar_y) : 0);
 442   if (avatar_button_) {
 443     avatar_button_->set_button_on_right(avatar_on_right);
 444     avatar_button_->SetBoundsRect(avatar_bounds_);
 445
 446     int edge_offset;
 447 #if defined(ENABLE_SUPERVISED_USERS)
 448     if (supervised_user_avatar_label_) {
 449       supervised_user_avatar_label_->SetLabelOnRight(avatar_on_right);
 450       // Space between the bottom of the avatar and the bottom of the avatar
 451       // label.
 452       const int kSupervisedUserAvatarLabelBottomSpacing = 3;
 453       gfx::Size label_size = supervised_user_avatar_label_->GetPreferredSize();
 454       // The outside edge of the avatar label should be just outside that of the
 455       // avatar menu button.
 456       int avatar_label_x = avatar_on_right ?
 457           (host->width() - trailing_button_start_ - label_size.width()) :
 458           leading_button_start_;
 459       gfx::Rect label_bounds(
 460           avatar_label_x,
 461           avatar_bottom - kSupervisedUserAvatarLabelBottomSpacing -
 462             label_size.height(),
 463           label_size.width(),
 464           delegate_->ShouldShowAvatar() ? label_size.height() : 0);
 465       supervised_user_avatar_label_->SetBoundsRect(label_bounds);
 466       edge_offset = label_size.width();
 467     } else {
 468       edge_offset = kAvatarOuterSpacing + incognito_icon.width();
 469     }
 470 #else
 471     edge_offset = kAvatarOuterSpacing + incognito_icon.width();
 472 #endif
 473     if (avatar_on_right)
 474       trailing_button_start_ += edge_offset;
 475     else
 476       leading_button_start_ += edge_offset;
 477
 478     // We just add the avatar button size to the minimum size because clicking
 479     // the avatar label does the same thing as clicking the avatar button.
 480     minimum_size_for_buttons_ += kAvatarOuterSpacing + incognito_icon.width();
 481   }
 482 }
 483
 484 void OpaqueBrowserFrameViewLayout::ConfigureButton(
 485     views::View* host,
 486     views::FrameButton button_id,
 487     ButtonAlignment alignment,
 488     int caption_y) {
 489   switch (button_id) {
 490     case views::FRAME_BUTTON_MINIMIZE: {
 491       minimize_button_->SetVisible(true);
 492       SetBoundsForButton(host, minimize_button_, alignment, caption_y);
 493       break;
 494     }
 495     case views::FRAME_BUTTON_MAXIMIZE: {
 496       // When the window is restored, we show a maximized button; otherwise, we
 497       // show a restore button.
 498       bool is_restored = !delegate_->IsMaximized() && !delegate_->IsMinimized();
 499       views::ImageButton* invisible_button = is_restored ?
 500           restore_button_ : maximize_button_;
 501       invisible_button->SetVisible(false);
 502
 503       views::ImageButton* visible_button = is_restored ?
 504           maximize_button_ : restore_button_;
 505       visible_button->SetVisible(true);
 506       SetBoundsForButton(host, visible_button, alignment, caption_y);
 507       break;
 508     }
 509     case views::FRAME_BUTTON_CLOSE: {
 510       close_button_->SetVisible(true);
 511       SetBoundsForButton(host, close_button_, alignment, caption_y);
 512       break;
 513     }
 514   }
 515 }
 516
 517 void OpaqueBrowserFrameViewLayout::HideButton(views::FrameButton button_id) {
 518   switch (button_id) {
 519     case views::FRAME_BUTTON_MINIMIZE:
 520       minimize_button_->SetVisible(false);
 521       break;
 522     case views::FRAME_BUTTON_MAXIMIZE:
 523       restore_button_->SetVisible(false);
 524       maximize_button_->SetVisible(false);
 525       break;
 526     case views::FRAME_BUTTON_CLOSE:
 527       close_button_->SetVisible(false);
 528       break;
 529   }
 530 }
 531
 532 void OpaqueBrowserFrameViewLayout::SetBoundsForButton(
 533     views::View* host,
 534     views::ImageButton* button,
 535     ButtonAlignment alignment,
 536     int caption_y) {
 537   gfx::Size button_size = button->GetPreferredSize();
 538
 539   button->SetImageAlignment(
 540       (alignment == ALIGN_LEADING)  ?
 541           views::ImageButton::ALIGN_RIGHT : views::ImageButton::ALIGN_LEFT,
 542       views::ImageButton::ALIGN_BOTTOM);
 543
 544   // There should always be the same number of non-shadow pixels visible to the
 545   // side of the caption buttons.  In maximized mode we extend buttons to the
 546   // screen top and the rightmost button to the screen right (or leftmost button
 547   // to the screen left, for left-aligned buttons) to obey Fitts' Law.
 548   bool title_bar_condensed = IsTitleBarCondensed();
 549
 550   // When we are the first button on the leading side and are the close
 551   // button, we must flip ourselves, because the close button assets have
 552   // a little notch to fit in the rounded frame.
 553   button->SetDrawImageMirrored(alignment == ALIGN_LEADING &&
 554                                !has_leading_buttons_ &&
 555                                button == close_button_);
 556   // If the window is maximized, align the buttons to its upper edge.
 557   int extra_height = title_bar_condensed ? extra_caption_y_ : 0;
 558
 559   switch (alignment) {
 560     case ALIGN_LEADING: {
 561       if (has_leading_buttons_)
 562         leading_button_start_ += window_caption_spacing_;
 563
 564       // If we're the first button on the left and maximized, add width to the
 565       // right hand side of the screen.
 566       int extra_width = (title_bar_condensed && !has_leading_buttons_) ?
 567         (kFrameBorderThickness -
 568          views::NonClientFrameView::kFrameShadowThickness) : 0;
 569
 570       button->SetBounds(
 571           leading_button_start_,
 572           caption_y - extra_height,
 573           button_size.width() + extra_width,
 574           button_size.height() + extra_height);
 575
 576       leading_button_start_ += extra_width + button_size.width();
 577       minimum_size_for_buttons_ += extra_width + button_size.width();
 578       has_leading_buttons_ = true;
 579       break;
 580     }
 581     case ALIGN_TRAILING: {
 582       if (has_trailing_buttons_)
 583         trailing_button_start_ += window_caption_spacing_;
 584
 585       // If we're the first button on the right and maximized, add width to the
 586       // right hand side of the screen.
 587       int extra_width = (title_bar_condensed && !has_trailing_buttons_) ?
 588         (kFrameBorderThickness -
 589          views::NonClientFrameView::kFrameShadowThickness) : 0;
 590
 591       button->SetBounds(
 592           host->width() - trailing_button_start_ - extra_width -
 593               button_size.width(),
 594           caption_y - extra_height,
 595           button_size.width() + extra_width,
 596           button_size.height() + extra_height);
 597
 598       trailing_button_start_ += extra_width + button_size.width();
 599       minimum_size_for_buttons_ += extra_width + button_size.width();
 600       has_trailing_buttons_ = true;
 601       break;
 602     }
 603   }
 604 }
 605
 606 void OpaqueBrowserFrameViewLayout::SetView(int id, views::View* view) {
 607   // Why do things this way instead of having an Init() method, where we're
 608   // passed the views we'll handle? Because OpaqueBrowserFrameView doesn't own
 609   // all the views which are part of it. The avatar stuff, for example, will be
 610   // added and removed by the base class of OpaqueBrowserFrameView.
 611   switch (id) {
 612     case VIEW_ID_MINIMIZE_BUTTON:
 613       if (view) {
 614         DCHECK_EQ(std::string(views::ImageButton::kViewClassName),
 615                   view->GetClassName());
 616       }
 617       minimize_button_ = static_cast<views::ImageButton*>(view);
 618       break;
 619     case VIEW_ID_MAXIMIZE_BUTTON:
 620       if (view) {
 621         DCHECK_EQ(std::string(views::ImageButton::kViewClassName),
 622                   view->GetClassName());
 623       }
 624       maximize_button_ = static_cast<views::ImageButton*>(view);
 625       break;
 626     case VIEW_ID_RESTORE_BUTTON:
 627       if (view) {
 628         DCHECK_EQ(std::string(views::ImageButton::kViewClassName),
 629                   view->GetClassName());
 630       }
 631       restore_button_ = static_cast<views::ImageButton*>(view);
 632       break;
 633     case VIEW_ID_CLOSE_BUTTON:
 634       if (view) {
 635         DCHECK_EQ(std::string(views::ImageButton::kViewClassName),
 636                   view->GetClassName());
 637       }
 638       close_button_ = static_cast<views::ImageButton*>(view);
 639       break;
 640     case VIEW_ID_WINDOW_ICON:
 641       window_icon_ = view;
 642       break;
 643     case VIEW_ID_WINDOW_TITLE:
 644       if (view) {
 645         DCHECK_EQ(std::string(views::Label::kViewClassName),
 646                   view->GetClassName());
 647       }
 648       window_title_ = static_cast<views::Label*>(view);
 649       break;
 650 #if defined(ENABLE_SUPERVISED_USERS)
 651     case VIEW_ID_SUPERVISED_USER_AVATAR_LABEL:
 652       supervised_user_avatar_label_ =
 653           static_cast<SupervisedUserAvatarLabel*>(view);
 654       break;
 655 #endif
 656     case VIEW_ID_AVATAR_BUTTON:
 657       if (view) {
 658         DCHECK_EQ(std::string(AvatarMenuButton::kViewClassName),
 659                   view->GetClassName());
 660       }
 661       avatar_button_ = static_cast<AvatarMenuButton*>(view);
 662       break;
 663     case VIEW_ID_NEW_AVATAR_BUTTON:
 664       new_avatar_button_ = view;
 665       break;
 666     default:
 667       NOTIMPLEMENTED() << "Unknown view id " << id;
 668       break;
 669   }
 670 }
 671
 672 ///////////////////////////////////////////////////////////////////////////////
 673 // OpaqueBrowserFrameView, views::LayoutManager:
 674
 675 void OpaqueBrowserFrameViewLayout::Layout(views::View* host) {
 676   // Reset all our data so that everything is invisible.
 677   int thickness = FrameBorderThickness(false);
 678   leading_button_start_ = thickness;
 679   trailing_button_start_ = thickness;
 680   minimum_size_for_buttons_ = leading_button_start_ + trailing_button_start_;
 681   has_leading_buttons_ = false;
 682   has_trailing_buttons_ = false;
 683
 684   LayoutWindowControls(host);
 685   LayoutTitleBar(host);
 686
 687   // We now add a single pixel to the leading spacing. We do this because the
 688   // avatar and tab strip start one pixel inward compared to where things start
 689   // on the trailing side.
 690   leading_button_start_++;
 691
 692   if (delegate_->IsRegularOrGuestSession() && switches::IsNewAvatarMenu())
 693     LayoutNewStyleAvatar(host);
 694   else
 695     LayoutAvatar(host);
 696
 697   client_view_bounds_ = CalculateClientAreaBounds(
 698       host->width(), host->height());
 699 }
 700
 701 gfx::Size OpaqueBrowserFrameViewLayout::GetPreferredSize(
 702     const views::View* host) const {
 703   // This is never used; NonClientView::GetPreferredSize() will be called
 704   // instead.
 705   NOTREACHED();
 706   return gfx::Size();
 707 }
 708
 709 void OpaqueBrowserFrameViewLayout::ViewAdded(views::View* host,
 710                                              views::View* view) {
 711   SetView(view->id(), view);
 712 }
 713
 714 void OpaqueBrowserFrameViewLayout::ViewRemoved(views::View* host,
 715                                                views::View* view) {
 716   SetView(view->id(), nullptr);
 717 }