src/chrome/browser/ui/views/frame/app_panel_browser_frame_view.cc

   1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "chrome/browser/ui/views/frame/app_panel_browser_frame_view.h"
   6
   7 #include "base/compiler_specific.h"
   8 #include "base/strings/utf_string_conversions.h"
   9 #include "chrome/browser/ui/views/frame/browser_frame.h"
  10 #include "chrome/browser/ui/views/frame/browser_view.h"
  11 #include "chrome/browser/ui/views/tab_icon_view.h"
  12 #include "content/public/browser/web_contents.h"
  13 #include "grit/chromium_strings.h"
  14 #include "grit/generated_resources.h"
  15 #include "grit/theme_resources.h"
  16 #include "grit/ui_resources.h"
  17 #include "ui/base/hit_test.h"
  18 #include "ui/base/l10n/l10n_util.h"
  19 #include "ui/base/resource/resource_bundle.h"
  20 #include "ui/gfx/canvas.h"
  21 #include "ui/gfx/font.h"
  22 #include "ui/gfx/path.h"
  23 #include "ui/views/color_constants.h"
  24 #include "ui/views/controls/button/image_button.h"
  25 #include "ui/views/widget/widget.h"
  26 #include "ui/views/widget/widget_delegate.h"
  27
  28 using content::WebContents;
  29
  30 namespace {
  31
  32 // The frame border is only visible in restored mode and is hardcoded to 1 px on
  33 // each side regardless of the system window border size.
  34 const int kFrameBorderThickness = 1;
  35 // In the window corners, the resize areas don't actually expand bigger, but the
  36 // 16 px at the end of each edge triggers diagonal resizing.
  37 const int kResizeAreaCornerSize = 16;
  38 // The titlebar never shrinks too short to show the caption button plus some
  39 // padding below it.
  40 const int kCaptionButtonHeightWithPadding = 27;
  41 // The titlebar has a 2 px 3D edge along the bottom, and we reserve 2 px (1 for
  42 // border, 1 for padding) along the top.
  43 const int kTitlebarTopAndBottomEdgeThickness = 2;
  44 // The icon is inset 6 px from the left frame border.
  45 const int kIconLeftSpacing = 6;
  46 // The icon never shrinks below 16 px on a side.
  47 const int kIconMinimumSize = 16;
  48 // There is a 4 px gap between the icon and the title text.
  49 const int kIconTitleSpacing = 4;
  50 // There is a 5 px gap between the title text and the close button.
  51 const int kTitleCloseButtonSpacing = 5;
  52 // There is a 4 px gap between the close button and the frame border.
  53 const int kCloseButtonFrameBorderSpacing = 4;
  54
  55 const SkColor kFrameColorAppPanel = SK_ColorWHITE;
  56 const SkColor kFrameColorAppPanelInactive = SK_ColorWHITE;
  57
  58 }  // namespace
  59
  60 ///////////////////////////////////////////////////////////////////////////////
  61 // AppPanelBrowserFrameView, public:
  62
  63 AppPanelBrowserFrameView::AppPanelBrowserFrameView(BrowserFrame* frame,
  64                                                    BrowserView* browser_view)
  65     : BrowserNonClientFrameView(frame, browser_view),
  66       close_button_(new views::ImageButton(this)),
  67       window_icon_(NULL) {
  68   DCHECK(browser_view->ShouldShowWindowIcon());
  69   DCHECK(browser_view->ShouldShowWindowTitle());
  70
  71   frame->set_frame_type(views::Widget::FRAME_TYPE_FORCE_CUSTOM);
  72
  73   ui::ResourceBundle& rb = ui::ResourceBundle::GetSharedInstance();
  74   close_button_->SetImage(views::CustomButton::STATE_NORMAL,
  75                           rb.GetImageSkiaNamed(IDR_CLOSE_2));
  76   close_button_->SetImage(views::CustomButton::STATE_HOVERED,
  77                           rb.GetImageSkiaNamed(IDR_CLOSE_2_H));
  78   close_button_->SetImage(views::CustomButton::STATE_PRESSED,
  79                           rb.GetImageSkiaNamed(IDR_CLOSE_2_P));
  80   close_button_->SetAccessibleName(
  81       l10n_util::GetStringUTF16(IDS_ACCNAME_CLOSE));
  82   AddChildView(close_button_);
  83
  84   window_icon_ = new TabIconView(this);
  85   window_icon_->set_is_light(true);
  86   AddChildView(window_icon_);
  87   window_icon_->Update();
  88 }
  89
  90 AppPanelBrowserFrameView::~AppPanelBrowserFrameView() {
  91 }
  92
  93 ///////////////////////////////////////////////////////////////////////////////
  94 // AppPanelBrowserFrameView, BrowserNonClientFrameView implementation:
  95
  96 gfx::Rect AppPanelBrowserFrameView::GetBoundsForTabStrip(
  97     views::View* tabstrip) const {
  98   // App panels never show a tab strip.
  99   NOTREACHED();
 100   return gfx::Rect();
 101 }
 102
 103 BrowserNonClientFrameView::TabStripInsets
 104 AppPanelBrowserFrameView::GetTabStripInsets(bool restored) const {
 105   // App panels are not themed and don't need this.
 106   return TabStripInsets();
 107 }
 108
 109 int AppPanelBrowserFrameView::GetThemeBackgroundXInset() const {
 110   return 0;
 111 }
 112
 113 void AppPanelBrowserFrameView::UpdateThrobber(bool running) {
 114   window_icon_->Update();
 115 }
 116
 117 gfx::Size AppPanelBrowserFrameView::GetMinimumSize() {
 118   gfx::Size min_size(browser_view()->GetMinimumSize());
 119   int border_thickness = NonClientBorderThickness();
 120   min_size.Enlarge(2 * border_thickness,
 121                    NonClientTopBorderHeight() + border_thickness);
 122
 123   min_size.set_width(std::max(min_size.width(),
 124       (2 * FrameBorderThickness()) + kIconLeftSpacing + IconSize() +
 125       kTitleCloseButtonSpacing + kCloseButtonFrameBorderSpacing));
 126   return min_size;
 127 }
 128
 129 ///////////////////////////////////////////////////////////////////////////////
 130 // AppPanelBrowserFrameView, views::NonClientFrameView implementation:
 131
 132 gfx::Rect AppPanelBrowserFrameView::GetBoundsForClientView() const {
 133   return client_view_bounds_;
 134 }
 135
 136 gfx::Rect AppPanelBrowserFrameView::GetWindowBoundsForClientBounds(
 137     const gfx::Rect& client_bounds) const {
 138   int top_height = NonClientTopBorderHeight();
 139   int border_thickness = NonClientBorderThickness();
 140   return gfx::Rect(std::max(0, client_bounds.x() - border_thickness),
 141                    std::max(0, client_bounds.y() - top_height),
 142                    client_bounds.width() + (2 * border_thickness),
 143                    client_bounds.height() + top_height + border_thickness);
 144 }
 145
 146 int AppPanelBrowserFrameView::NonClientHitTest(const gfx::Point& point) {
 147   if (!bounds().Contains(point))
 148     return HTNOWHERE;
 149
 150   int frame_component = frame()->client_view()->NonClientHitTest(point);
 151
 152   // See if we're in the sysmenu region.  (We check the ClientView first to be
 153   // consistent with OpaqueBrowserFrameView; it's not really necessary here.)
 154   gfx::Rect sysmenu_rect(IconBounds());
 155   // In maximized mode we extend the rect to the screen corner to take advantage
 156   // of Fitts' Law.
 157   if (frame()->IsMaximized())
 158     sysmenu_rect.SetRect(0, 0, sysmenu_rect.right(), sysmenu_rect.bottom());
 159   sysmenu_rect.set_x(GetMirroredXForRect(sysmenu_rect));
 160   if (sysmenu_rect.Contains(point))
 161     return (frame_component == HTCLIENT) ? HTCLIENT : HTSYSMENU;
 162
 163   if (frame_component != HTNOWHERE)
 164     return frame_component;
 165
 166   // Then see if the point is within any of the window controls.
 167   if (close_button_->visible() &&
 168       close_button_->GetMirroredBounds().Contains(point))
 169     return HTCLOSE;
 170
 171   int window_component = GetHTComponentForFrame(point,
 172       NonClientBorderThickness(), NonClientBorderThickness(),
 173       kResizeAreaCornerSize, kResizeAreaCornerSize,
 174       frame()->widget_delegate()->CanResize());
 175   // Fall back to the caption if no other component matches.
 176   return (window_component == HTNOWHERE) ? HTCAPTION : window_component;
 177 }
 178
 179 void AppPanelBrowserFrameView::GetWindowMask(const gfx::Size& size,
 180                                              gfx::Path* window_mask) {
 181   DCHECK(window_mask);
 182
 183   if (frame()->IsMaximized())
 184     return;
 185
 186   // Redefine the window visible region for the new size.
 187   window_mask->moveTo(0, 3);
 188   window_mask->lineTo(1, 2);
 189   window_mask->lineTo(1, 1);
 190   window_mask->lineTo(2, 1);
 191   window_mask->lineTo(3, 0);
 192
 193   window_mask->lineTo(SkIntToScalar(size.width() - 3), 0);
 194   window_mask->lineTo(SkIntToScalar(size.width() - 2), 1);
 195   window_mask->lineTo(SkIntToScalar(size.width() - 1), 1);
 196   window_mask->lineTo(SkIntToScalar(size.width() - 1), 2);
 197   window_mask->lineTo(SkIntToScalar(size.width()), 3);
 198
 199   window_mask->lineTo(SkIntToScalar(size.width()),
 200                       SkIntToScalar(size.height()));
 201   window_mask->lineTo(0, SkIntToScalar(size.height()));
 202   window_mask->close();
 203 }
 204
 205 void AppPanelBrowserFrameView::ResetWindowControls() {
 206   // The close button isn't affected by this constraint.
 207 }
 208
 209 void AppPanelBrowserFrameView::UpdateWindowIcon() {
 210   window_icon_->SchedulePaint();
 211 }
 212
 213
 214 ///////////////////////////////////////////////////////////////////////////////
 215 // AppPanelBrowserFrameView, views::View overrides:
 216
 217 void AppPanelBrowserFrameView::OnPaint(gfx::Canvas* canvas) {
 218   if (frame()->IsMaximized())
 219     PaintMaximizedFrameBorder(canvas);
 220   else
 221     PaintRestoredFrameBorder(canvas);
 222   PaintTitleBar(canvas);
 223   if (!frame()->IsMaximized())
 224     PaintRestoredClientEdge(canvas);
 225 }
 226
 227 void AppPanelBrowserFrameView::Layout() {
 228   LayoutWindowControls();
 229   LayoutTitleBar();
 230   client_view_bounds_ = CalculateClientAreaBounds(width(), height());
 231 }
 232
 233 ///////////////////////////////////////////////////////////////////////////////
 234 // AppPanelBrowserFrameView, views::ButtonListener implementation:
 235
 236 void AppPanelBrowserFrameView::ButtonPressed(views::Button* sender,
 237                                              const ui::Event& event) {
 238   if (sender == close_button_)
 239     frame()->Close();
 240 }
 241
 242 ///////////////////////////////////////////////////////////////////////////////
 243 // AppPanelBrowserFrameView, TabIconView::TabContentsProvider implementation:
 244
 245 bool AppPanelBrowserFrameView::ShouldTabIconViewAnimate() const {
 246   // This function is queried during the creation of the window as the
 247   // TabIconView we host is initialized, so we need to NULL check the selected
 248   // WebContents because in this condition there is not yet a selected tab.
 249   WebContents* current_tab = browser_view()->GetActiveWebContents();
 250   return current_tab ? current_tab->IsLoading() : false;
 251 }
 252
 253 gfx::ImageSkia AppPanelBrowserFrameView::GetFaviconForTabIconView() {
 254   return frame()->widget_delegate()->GetWindowIcon();
 255 }
 256
 257 ///////////////////////////////////////////////////////////////////////////////
 258 // AppPanelBrowserFrameView, private:
 259
 260 int AppPanelBrowserFrameView::FrameBorderThickness() const {
 261   return frame()->IsMaximized() ? 0 : kFrameBorderThickness;
 262 }
 263
 264 int AppPanelBrowserFrameView::NonClientBorderThickness() const {
 265   return FrameBorderThickness() +
 266       (frame()->IsMaximized() ? 0 : kClientEdgeThickness);
 267 }
 268
 269 int AppPanelBrowserFrameView::NonClientTopBorderHeight() const {
 270   return std::max(FrameBorderThickness() + IconSize(),
 271                   FrameBorderThickness() + kCaptionButtonHeightWithPadding) +
 272       TitlebarBottomThickness();
 273 }
 274
 275 int AppPanelBrowserFrameView::TitlebarBottomThickness() const {
 276   return kTitlebarTopAndBottomEdgeThickness +
 277       (frame()->IsMaximized() ? 0 : kClientEdgeThickness);
 278 }
 279
 280 int AppPanelBrowserFrameView::IconSize() const {
 281 #if defined(OS_WIN)
 282   // This metric scales up if either the titlebar height or the titlebar font
 283   // size are increased.
 284   return GetSystemMetrics(SM_CYSMICON);
 285 #else
 286   return std::max(BrowserFrame::GetTitleFont().height(), kIconMinimumSize);
 287 #endif
 288 }
 289
 290 gfx::Rect AppPanelBrowserFrameView::IconBounds() const {
 291   int size = IconSize();
 292   int frame_thickness = FrameBorderThickness();
 293   // Our frame border has a different "3D look" than Windows'.  Theirs has a
 294   // more complex gradient on the top that they push their icon/title below;
 295   // then the maximized window cuts this off and the icon/title are centered
 296   // in the remaining space.  Because the apparent shape of our border is
 297   // simpler, using the same positioning makes things look slightly uncentered
 298   // with restored windows, so when the window is restored, instead of
 299   // calculating the remaining space from below the frame border, we calculate
 300   // from below the top border-plus-padding.
 301   int unavailable_px_at_top = frame()->IsMaximized() ?
 302       frame_thickness : kTitlebarTopAndBottomEdgeThickness;
 303   // When the icon is shorter than the minimum space we reserve for the caption
 304   // button, we vertically center it.  We want to bias rounding to put extra
 305   // space above the icon, since the 3D edge (+ client edge, for restored
 306   // windows) below looks (to the eye) more like additional space than does the
 307   // border + padding (or nothing at all, for maximized windows) above; hence
 308   // the +1.
 309   int y = unavailable_px_at_top + (NonClientTopBorderHeight() -
 310       unavailable_px_at_top - size - TitlebarBottomThickness() + 1) / 2;
 311   return gfx::Rect(frame_thickness + kIconLeftSpacing, y, size, size);
 312 }
 313
 314 void AppPanelBrowserFrameView::PaintRestoredFrameBorder(gfx::Canvas* canvas) {
 315   ui::ResourceBundle& rb = ui::ResourceBundle::GetSharedInstance();
 316
 317   gfx::ImageSkia* top_left_corner =
 318       rb.GetImageSkiaNamed(IDR_WINDOW_TOP_LEFT_CORNER);
 319   gfx::ImageSkia* top_right_corner =
 320       rb.GetImageSkiaNamed(IDR_WINDOW_TOP_RIGHT_CORNER);
 321   gfx::ImageSkia* top_edge = rb.GetImageSkiaNamed(IDR_WINDOW_TOP_CENTER);
 322   gfx::ImageSkia* right_edge = rb.GetImageSkiaNamed(IDR_WINDOW_RIGHT_SIDE);
 323   gfx::ImageSkia* left_edge = rb.GetImageSkiaNamed(IDR_WINDOW_LEFT_SIDE);
 324   gfx::ImageSkia* bottom_left_corner =
 325       rb.GetImageSkiaNamed(IDR_WINDOW_BOTTOM_LEFT_CORNER);
 326   gfx::ImageSkia* bottom_right_corner =
 327       rb.GetImageSkiaNamed(IDR_WINDOW_BOTTOM_RIGHT_CORNER);
 328   gfx::ImageSkia* bottom_edge = rb.GetImageSkiaNamed(IDR_WINDOW_BOTTOM_CENTER);
 329
 330   // Window frame mode and color.
 331   gfx::ImageSkia* theme_frame;
 332   SkColor frame_color;
 333   if (ShouldPaintAsActive()) {
 334     theme_frame = rb.GetImageSkiaNamed(IDR_FRAME_APP_PANEL);
 335     frame_color = kFrameColorAppPanel;
 336   } else {
 337     theme_frame = rb.GetImageSkiaNamed(IDR_FRAME_APP_PANEL);
 338     frame_color = kFrameColorAppPanelInactive;
 339   }
 340
 341   // Fill with the frame color first so we have a constant background for
 342   // areas not covered by the theme image.
 343   canvas->FillRect(gfx::Rect(0, 0, width(), theme_frame->height()),
 344                    frame_color);
 345
 346   int remaining_height = height() - theme_frame->height();
 347   if (remaining_height > 0) {
 348     // Now fill down the sides.
 349     canvas->FillRect(gfx::Rect(0, theme_frame->height(), left_edge->width(),
 350                                remaining_height), frame_color);
 351     canvas->FillRect(gfx::Rect(width() - right_edge->width(),
 352                                theme_frame->height(), right_edge->width(),
 353                                remaining_height), frame_color);
 354     int center_width = width() - left_edge->width() - right_edge->width();
 355     if (center_width > 0) {
 356       // Now fill the bottom area.
 357       canvas->FillRect(gfx::Rect(left_edge->width(),
 358                                  height() - bottom_edge->height(), center_width,
 359                                  bottom_edge->height()), frame_color);
 360     }
 361   }
 362
 363   // Draw the theme frame.
 364   canvas->TileImageInt(*theme_frame, 0, 0, width(), theme_frame->height());
 365
 366   // Top.
 367   canvas->DrawImageInt(*top_left_corner, 0, 0);
 368   canvas->TileImageInt(*top_edge, top_left_corner->width(), 0,
 369                        width() - top_right_corner->width(), top_edge->height());
 370   canvas->DrawImageInt(*top_right_corner,
 371                        width() - top_right_corner->width(), 0);
 372
 373   // Right.
 374   canvas->TileImageInt(*right_edge, width() - right_edge->width(),
 375       top_right_corner->height(), right_edge->width(),
 376       height() - top_right_corner->height() - bottom_right_corner->height());
 377
 378   // Bottom.
 379   canvas->DrawImageInt(*bottom_right_corner,
 380                        width() - bottom_right_corner->width(),
 381                        height() - bottom_right_corner->height());
 382   canvas->TileImageInt(*bottom_edge, bottom_left_corner->width(),
 383       height() - bottom_edge->height(),
 384       width() - bottom_left_corner->width() - bottom_right_corner->width(),
 385       bottom_edge->height());
 386   canvas->DrawImageInt(*bottom_left_corner, 0,
 387                        height() - bottom_left_corner->height());
 388
 389   // Left.
 390   canvas->TileImageInt(*left_edge, 0, top_left_corner->height(),
 391       left_edge->width(),
 392       height() - top_left_corner->height() - bottom_left_corner->height());
 393 }
 394
 395 void AppPanelBrowserFrameView::PaintMaximizedFrameBorder(gfx::Canvas* canvas) {
 396   ui::ResourceBundle& rb = ui::ResourceBundle::GetSharedInstance();
 397
 398   gfx::ImageSkia* frame_image = rb.GetImageSkiaNamed(IDR_FRAME_APP_PANEL);
 399   canvas->TileImageInt(*frame_image, 0, FrameBorderThickness(), width(),
 400                        frame_image->height());
 401
 402   // The bottom of the titlebar actually comes from the top of the Client Edge
 403   // graphic, with the actual client edge clipped off the bottom.
 404   gfx::ImageSkia* titlebar_bottom = rb.GetImageSkiaNamed(IDR_APP_TOP_CENTER);
 405   int edge_height = titlebar_bottom->height() - kClientEdgeThickness;
 406   canvas->TileImageInt(*titlebar_bottom, 0,
 407                        frame()->client_view()->y() - edge_height,
 408                        width(), edge_height);
 409 }
 410
 411 void AppPanelBrowserFrameView::PaintTitleBar(gfx::Canvas* canvas) {
 412   // The window icon is painted by the TabIconView.
 413   views::WidgetDelegate* d = frame()->widget_delegate();
 414   canvas->DrawStringInt(d->GetWindowTitle(), BrowserFrame::GetTitleFont(),
 415       SK_ColorBLACK, GetMirroredXForRect(title_bounds_), title_bounds_.y(),
 416       title_bounds_.width(), title_bounds_.height());
 417 }
 418
 419 void AppPanelBrowserFrameView::PaintRestoredClientEdge(gfx::Canvas* canvas) {
 420   gfx::Rect client_area_bounds = CalculateClientAreaBounds(width(), height());
 421   int client_area_top = client_area_bounds.y();
 422
 423   ui::ResourceBundle& rb = ui::ResourceBundle::GetSharedInstance();
 424   gfx::ImageSkia* top_left = rb.GetImageSkiaNamed(IDR_APP_TOP_LEFT);
 425   gfx::ImageSkia* top = rb.GetImageSkiaNamed(IDR_APP_TOP_CENTER);
 426   gfx::ImageSkia* top_right = rb.GetImageSkiaNamed(IDR_APP_TOP_RIGHT);
 427   gfx::ImageSkia* right = rb.GetImageSkiaNamed(IDR_CONTENT_RIGHT_SIDE);
 428   gfx::ImageSkia* bottom_right =
 429       rb.GetImageSkiaNamed(IDR_CONTENT_BOTTOM_RIGHT_CORNER);
 430   gfx::ImageSkia* bottom = rb.GetImageSkiaNamed(IDR_CONTENT_BOTTOM_CENTER);
 431   gfx::ImageSkia* bottom_left =
 432       rb.GetImageSkiaNamed(IDR_CONTENT_BOTTOM_LEFT_CORNER);
 433   gfx::ImageSkia* left = rb.GetImageSkiaNamed(IDR_CONTENT_LEFT_SIDE);
 434
 435   // Top.
 436   int top_edge_y = client_area_top - top->height();
 437   canvas->DrawImageInt(*top_left, client_area_bounds.x() - top_left->width(),
 438                        top_edge_y);
 439   canvas->TileImageInt(*top, client_area_bounds.x(), top_edge_y,
 440                        client_area_bounds.width(), top->height());
 441   canvas->DrawImageInt(*top_right, client_area_bounds.right(), top_edge_y);
 442
 443   // Right.
 444   int client_area_bottom =
 445       std::max(client_area_top, client_area_bounds.bottom());
 446   int client_area_height = client_area_bottom - client_area_top;
 447   canvas->TileImageInt(*right, client_area_bounds.right(), client_area_top,
 448                        right->width(), client_area_height);
 449
 450   // Bottom.
 451   canvas->DrawImageInt(*bottom_right, client_area_bounds.right(),
 452                        client_area_bottom);
 453   canvas->TileImageInt(*bottom, client_area_bounds.x(), client_area_bottom,
 454                        client_area_bounds.width(), bottom_right->height());
 455   canvas->DrawImageInt(*bottom_left,
 456       client_area_bounds.x() - bottom_left->width(), client_area_bottom);
 457
 458   // Left.
 459   canvas->TileImageInt(*left, client_area_bounds.x() - left->width(),
 460       client_area_top, left->width(), client_area_height);
 461
 462   // Draw the color to fill in the edges.
 463   canvas->DrawRect(gfx::Rect(
 464       client_area_bounds.x() - kClientEdgeThickness,
 465       client_area_top - kClientEdgeThickness,
 466       client_area_bounds.width() + kClientEdgeThickness,
 467       client_area_bottom - client_area_top + kClientEdgeThickness),
 468       views::kClientEdgeColor);
 469 }
 470
 471 void AppPanelBrowserFrameView::LayoutWindowControls() {
 472   close_button_->SetImageAlignment(views::ImageButton::ALIGN_LEFT,
 473                                    views::ImageButton::ALIGN_BOTTOM);
 474   bool is_maximized = frame()->IsMaximized();
 475   // There should always be the same number of non-border pixels visible to the
 476   // side of the close button.  In maximized mode we extend the button to the
 477   // screen corner to obey Fitts' Law.
 478   int right_extra_width = is_maximized ? kCloseButtonFrameBorderSpacing : 0;
 479   gfx::Size close_button_size = close_button_->GetPreferredSize();
 480   int close_button_y =
 481       (NonClientTopBorderHeight() - close_button_size.height()) / 2;
 482   int top_extra_height = is_maximized ? close_button_y : 0;
 483   close_button_->SetBounds(width() - FrameBorderThickness() -
 484       kCloseButtonFrameBorderSpacing - close_button_size.width(),
 485       close_button_y - top_extra_height,
 486       close_button_size.width() + right_extra_width,
 487       close_button_size.height() + top_extra_height);
 488 }
 489
 490 void AppPanelBrowserFrameView::LayoutTitleBar() {
 491   // Size the icon first; the window title is based on the icon position.
 492   gfx::Rect icon_bounds(IconBounds());
 493   window_icon_->SetBoundsRect(icon_bounds);
 494
 495   // Size the title.
 496   int title_x = icon_bounds.right() + kIconTitleSpacing;
 497   int title_height = BrowserFrame::GetTitleFont().GetHeight();
 498   // We bias the title position so that when the difference between the icon
 499   // and title heights is odd, the extra pixel of the title is above the
 500   // vertical midline rather than below.  This compensates for how the icon is
 501   // already biased downwards (see IconBounds()) and helps prevent descenders
 502   // on the title from overlapping the 3D edge at the bottom of the titlebar.
 503   title_bounds_.SetRect(title_x,
 504       icon_bounds.y() + ((icon_bounds.height() - title_height - 1) / 2),
 505       std::max(0, close_button_->x() - kTitleCloseButtonSpacing - title_x),
 506       title_height);
 507 }
 508
 509 gfx::Rect AppPanelBrowserFrameView::CalculateClientAreaBounds(int width,
 510     int height) const {
 511   int top_height = NonClientTopBorderHeight();
 512   int border_thickness = NonClientBorderThickness();
 513   return gfx::Rect(border_thickness, top_height,
 514                    std::max(0, width - (2 * border_thickness)),
 515                    std::max(0, height - top_height - border_thickness));
 516 }