src/chrome/browser/ui/views/frame/opaque_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/opaque_browser_frame_view.h"
   6
   7 #include <algorithm>
   8 #include <string>
   9
  10 #include "base/compiler_specific.h"
  11 #include "base/prefs/pref_service.h"
  12 #include "base/strings/utf_string_conversions.h"
  13 #include "chrome/browser/chrome_notification_types.h"
  14 #include "chrome/browser/profiles/profiles_state.h"
  15 #include "chrome/browser/themes/theme_properties.h"
  16 #include "chrome/browser/ui/views/avatar_label.h"
  17 #include "chrome/browser/ui/views/avatar_menu_button.h"
  18 #include "chrome/browser/ui/views/frame/browser_frame.h"
  19 #include "chrome/browser/ui/views/frame/browser_view.h"
  20 #include "chrome/browser/ui/views/frame/opaque_browser_frame_view_layout.h"
  21 #include "chrome/browser/ui/views/frame/opaque_browser_frame_view_platform_specific.h"
  22 #include "chrome/browser/ui/views/new_avatar_button.h"
  23 #include "chrome/browser/ui/views/tab_icon_view.h"
  24 #include "chrome/browser/ui/views/tabs/tab_strip.h"
  25 #include "chrome/browser/ui/views/toolbar/toolbar_view.h"
  26 #include "chrome/common/pref_names.h"
  27 #include "chrome/common/profile_management_switches.h"
  28 #include "content/public/browser/notification_service.h"
  29 #include "content/public/browser/web_contents.h"
  30 #include "grit/chromium_strings.h"
  31 #include "grit/generated_resources.h"
  32 #include "grit/theme_resources.h"
  33 #include "grit/ui_resources.h"
  34 #include "ui/base/accessibility/accessible_view_state.h"
  35 #include "ui/base/hit_test.h"
  36 #include "ui/base/l10n/l10n_util.h"
  37 #include "ui/base/resource/resource_bundle.h"
  38 #include "ui/base/theme_provider.h"
  39 #include "ui/gfx/canvas.h"
  40 #include "ui/gfx/font_list.h"
  41 #include "ui/gfx/image/image.h"
  42 #include "ui/gfx/image/image_skia.h"
  43 #include "ui/gfx/path.h"
  44 #include "ui/gfx/rect_conversions.h"
  45 #include "ui/views/controls/button/image_button.h"
  46 #include "ui/views/controls/image_view.h"
  47 #include "ui/views/controls/label.h"
  48 #include "ui/views/layout/layout_constants.h"
  49 #include "ui/views/views_delegate.h"
  50 #include "ui/views/widget/root_view.h"
  51 #include "ui/views/window/frame_background.h"
  52 #include "ui/views/window/window_shape.h"
  53
  54 #if defined(OS_LINUX)
  55 #include "ui/views/controls/menu/menu_runner.h"
  56 #endif
  57
  58 using content::WebContents;
  59
  60 namespace {
  61
  62 // While resize areas on Windows are normally the same size as the window
  63 // borders, our top area is shrunk by 1 px to make it easier to move the window
  64 // around with our thinner top grabbable strip.  (Incidentally, our side and
  65 // bottom resize areas don't match the frame border thickness either -- they
  66 // span the whole nonclient area, so there's no "dead zone" for the mouse.)
  67 const int kTopResizeAdjust = 1;
  68
  69 // In the window corners, the resize areas don't actually expand bigger, but the
  70 // 16 px at the end of each edge triggers diagonal resizing.
  71 const int kResizeAreaCornerSize = 16;
  72
  73 // The content left/right images have a shadow built into them.
  74 const int kContentEdgeShadowThickness = 2;
  75
  76 // The icon never shrinks below 16 px on a side.
  77 const int kIconMinimumSize = 16;
  78
  79 // The top 3 px of the tabstrip is shadow; in maximized mode we push this off
  80 // the top of the screen so the tabs appear flush against the screen edge.
  81 const int kTabstripTopShadowThickness = 3;
  82
  83 }  // namespace
  84
  85 ///////////////////////////////////////////////////////////////////////////////
  86 // OpaqueBrowserFrameView, public:
  87
  88 OpaqueBrowserFrameView::OpaqueBrowserFrameView(BrowserFrame* frame,
  89                                                BrowserView* browser_view)
  90     : BrowserNonClientFrameView(frame, browser_view),
  91       layout_(new OpaqueBrowserFrameViewLayout(this)),
  92       minimize_button_(NULL),
  93       maximize_button_(NULL),
  94       restore_button_(NULL),
  95       close_button_(NULL),
  96       window_icon_(NULL),
  97       window_title_(NULL),
  98       frame_background_(new views::FrameBackground()) {
  99   SetLayoutManager(layout_);
 100
 101   if (OpaqueBrowserFrameViewLayout::ShouldAddDefaultCaptionButtons()) {
 102     minimize_button_ = InitWindowCaptionButton(IDR_MINIMIZE,
 103                                                IDR_MINIMIZE_H,
 104                                                IDR_MINIMIZE_P,
 105                                                IDR_MINIMIZE_BUTTON_MASK,
 106                                                IDS_ACCNAME_MINIMIZE,
 107                                                VIEW_ID_MINIMIZE_BUTTON);
 108     maximize_button_ = InitWindowCaptionButton(IDR_MAXIMIZE,
 109                                                IDR_MAXIMIZE_H,
 110                                                IDR_MAXIMIZE_P,
 111                                                IDR_MAXIMIZE_BUTTON_MASK,
 112                                                IDS_ACCNAME_MAXIMIZE,
 113                                                VIEW_ID_MAXIMIZE_BUTTON);
 114     restore_button_ = InitWindowCaptionButton(IDR_RESTORE,
 115                                               IDR_RESTORE_H,
 116                                               IDR_RESTORE_P,
 117                                               IDR_RESTORE_BUTTON_MASK,
 118                                               IDS_ACCNAME_RESTORE,
 119                                               VIEW_ID_RESTORE_BUTTON);
 120     close_button_ = InitWindowCaptionButton(IDR_CLOSE,
 121                                             IDR_CLOSE_H,
 122                                             IDR_CLOSE_P,
 123                                             IDR_CLOSE_BUTTON_MASK,
 124                                             IDS_ACCNAME_CLOSE,
 125                                             VIEW_ID_CLOSE_BUTTON);
 126   }
 127
 128   // Initializing the TabIconView is expensive, so only do it if we need to.
 129   if (browser_view->ShouldShowWindowIcon()) {
 130     window_icon_ = new TabIconView(this, this);
 131     window_icon_->set_is_light(true);
 132     window_icon_->set_id(VIEW_ID_WINDOW_ICON);
 133     AddChildView(window_icon_);
 134     window_icon_->Update();
 135   }
 136
 137   window_title_ = new views::Label(
 138       browser_view->GetWindowTitle(),
 139       gfx::FontList(BrowserFrame::GetTitleFontList()));
 140   window_title_->SetVisible(browser_view->ShouldShowWindowTitle());
 141   window_title_->SetEnabledColor(SK_ColorWHITE);
 142   // TODO(msw): Use a transparent background color as a workaround to use the
 143   // gfx::Canvas::NO_SUBPIXEL_RENDERING flag and avoid some visual artifacts.
 144   window_title_->SetBackgroundColor(0x00000000);
 145   window_title_->SetHorizontalAlignment(gfx::ALIGN_LEFT);
 146   window_title_->set_id(VIEW_ID_WINDOW_TITLE);
 147   AddChildView(window_title_);
 148
 149   if (browser_view->IsRegularOrGuestSession() &&
 150       switches::IsNewProfileManagement())
 151     UpdateNewStyleAvatarInfo(this, NewAvatarButton::THEMED_BUTTON);
 152   else
 153     UpdateAvatarInfo();
 154
 155   if (!browser_view->IsOffTheRecord()) {
 156     registrar_.Add(this, chrome::NOTIFICATION_PROFILE_CACHED_INFO_CHANGED,
 157                    content::NotificationService::AllSources());
 158   }
 159
 160   platform_observer_.reset(OpaqueBrowserFrameViewPlatformSpecific::Create(
 161       this, layout_, browser_view->browser()->profile()));
 162 }
 163
 164 OpaqueBrowserFrameView::~OpaqueBrowserFrameView() {
 165 }
 166
 167 ///////////////////////////////////////////////////////////////////////////////
 168 // OpaqueBrowserFrameView, BrowserNonClientFrameView implementation:
 169
 170 gfx::Rect OpaqueBrowserFrameView::GetBoundsForTabStrip(
 171     views::View* tabstrip) const {
 172   if (!tabstrip)
 173     return gfx::Rect();
 174
 175   return layout_->GetBoundsForTabStrip(tabstrip->GetPreferredSize(), width());
 176 }
 177
 178 int OpaqueBrowserFrameView::GetTopInset() const {
 179   return browser_view()->IsTabStripVisible() ?
 180       layout_->GetTabStripInsetsTop(false) :
 181       layout_->NonClientTopBorderHeight(false);
 182 }
 183
 184 int OpaqueBrowserFrameView::GetThemeBackgroundXInset() const {
 185   return 0;
 186 }
 187
 188 void OpaqueBrowserFrameView::UpdateThrobber(bool running) {
 189   if (window_icon_)
 190     window_icon_->Update();
 191 }
 192
 193 gfx::Size OpaqueBrowserFrameView::GetMinimumSize() {
 194   return layout_->GetMinimumSize(width());
 195 }
 196
 197 ///////////////////////////////////////////////////////////////////////////////
 198 // OpaqueBrowserFrameView, views::NonClientFrameView implementation:
 199
 200 gfx::Rect OpaqueBrowserFrameView::GetBoundsForClientView() const {
 201   return layout_->client_view_bounds();
 202 }
 203
 204 gfx::Rect OpaqueBrowserFrameView::GetWindowBoundsForClientBounds(
 205     const gfx::Rect& client_bounds) const {
 206   return layout_->GetWindowBoundsForClientBounds(client_bounds);
 207 }
 208
 209 int OpaqueBrowserFrameView::NonClientHitTest(const gfx::Point& point) {
 210   if (!bounds().Contains(point))
 211     return HTNOWHERE;
 212
 213   // See if the point is within the avatar menu button or within the avatar
 214   // label.
 215   if ((avatar_button() &&
 216        avatar_button()->GetMirroredBounds().Contains(point)) ||
 217       (avatar_label() && avatar_label()->GetMirroredBounds().Contains(point)) ||
 218       (new_avatar_button() &&
 219        new_avatar_button()->GetMirroredBounds().Contains(point)))
 220     return HTCLIENT;
 221
 222   int frame_component = frame()->client_view()->NonClientHitTest(point);
 223
 224   // See if we're in the sysmenu region.  We still have to check the tabstrip
 225   // first so that clicks in a tab don't get treated as sysmenu clicks.
 226   gfx::Rect sysmenu_rect(IconBounds());
 227   // In maximized mode we extend the rect to the screen corner to take advantage
 228   // of Fitts' Law.
 229   if (layout_->IsTitleBarCondensed())
 230     sysmenu_rect.SetRect(0, 0, sysmenu_rect.right(), sysmenu_rect.bottom());
 231   sysmenu_rect.set_x(GetMirroredXForRect(sysmenu_rect));
 232   if (sysmenu_rect.Contains(point))
 233     return (frame_component == HTCLIENT) ? HTCLIENT : HTSYSMENU;
 234
 235   if (frame_component != HTNOWHERE)
 236     return frame_component;
 237
 238   // Then see if the point is within any of the window controls.
 239   if (close_button_ && close_button_->visible() &&
 240       close_button_->GetMirroredBounds().Contains(point))
 241     return HTCLOSE;
 242   if (restore_button_ && restore_button_->visible() &&
 243       restore_button_->GetMirroredBounds().Contains(point))
 244     return HTMAXBUTTON;
 245   if (maximize_button_ && maximize_button_->visible() &&
 246       maximize_button_->GetMirroredBounds().Contains(point))
 247     return HTMAXBUTTON;
 248   if (minimize_button_ && minimize_button_->visible() &&
 249       minimize_button_->GetMirroredBounds().Contains(point))
 250     return HTMINBUTTON;
 251
 252   views::WidgetDelegate* delegate = frame()->widget_delegate();
 253   if (!delegate) {
 254     LOG(WARNING) << "delegate is NULL, returning safe default.";
 255     return HTCAPTION;
 256   }
 257   int window_component = GetHTComponentForFrame(point, TopResizeHeight(),
 258       NonClientBorderThickness(), kResizeAreaCornerSize, kResizeAreaCornerSize,
 259       delegate->CanResize());
 260   // Fall back to the caption if no other component matches.
 261   return (window_component == HTNOWHERE) ? HTCAPTION : window_component;
 262 }
 263
 264 void OpaqueBrowserFrameView::GetWindowMask(const gfx::Size& size,
 265                                            gfx::Path* window_mask) {
 266   DCHECK(window_mask);
 267
 268   if (layout_->IsTitleBarCondensed() || frame()->IsFullscreen())
 269     return;
 270
 271   views::GetDefaultWindowMask(size, window_mask);
 272 }
 273
 274 void OpaqueBrowserFrameView::ResetWindowControls() {
 275   if (!OpaqueBrowserFrameViewLayout::ShouldAddDefaultCaptionButtons())
 276     return;
 277   restore_button_->SetState(views::CustomButton::STATE_NORMAL);
 278   minimize_button_->SetState(views::CustomButton::STATE_NORMAL);
 279   maximize_button_->SetState(views::CustomButton::STATE_NORMAL);
 280   // The close button isn't affected by this constraint.
 281 }
 282
 283 void OpaqueBrowserFrameView::UpdateWindowIcon() {
 284   window_icon_->SchedulePaint();
 285 }
 286
 287 void OpaqueBrowserFrameView::UpdateWindowTitle() {
 288   if (!frame()->IsFullscreen())
 289     window_title_->SchedulePaint();
 290 }
 291
 292 ///////////////////////////////////////////////////////////////////////////////
 293 // OpaqueBrowserFrameView, views::View overrides:
 294
 295 bool OpaqueBrowserFrameView::HitTestRect(const gfx::Rect& rect) const {
 296   if (!views::View::HitTestRect(rect)) {
 297     // |rect| is outside OpaqueBrowserFrameView's bounds.
 298     return false;
 299   }
 300
 301   // If the rect is outside the bounds of the client area, claim it.
 302   gfx::RectF rect_in_client_view_coords_f(rect);
 303   View::ConvertRectToTarget(this, frame()->client_view(),
 304       &rect_in_client_view_coords_f);
 305   gfx::Rect rect_in_client_view_coords = gfx::ToEnclosingRect(
 306       rect_in_client_view_coords_f);
 307   if (!frame()->client_view()->HitTestRect(rect_in_client_view_coords))
 308     return true;
 309
 310   // Otherwise, claim |rect| only if it is above the bottom of the tabstrip in
 311   // a non-tab portion.
 312   TabStrip* tabstrip = browser_view()->tabstrip();
 313   if (!tabstrip || !browser_view()->IsTabStripVisible())
 314     return false;
 315
 316   gfx::RectF rect_in_tabstrip_coords_f(rect);
 317   View::ConvertRectToTarget(this, tabstrip, &rect_in_tabstrip_coords_f);
 318   gfx::Rect rect_in_tabstrip_coords = gfx::ToEnclosingRect(
 319       rect_in_tabstrip_coords_f);
 320   if (rect_in_tabstrip_coords.bottom() > tabstrip->GetLocalBounds().bottom()) {
 321     // |rect| is below the tabstrip.
 322     return false;
 323   }
 324
 325   if (tabstrip->HitTestRect(rect_in_tabstrip_coords)) {
 326     // Claim |rect| if it is in a non-tab portion of the tabstrip.
 327     return tabstrip->IsRectInWindowCaption(rect_in_tabstrip_coords);
 328   }
 329
 330   // The window switcher button is to the right of the tabstrip but is
 331   // part of the client view.
 332   views::View* window_switcher_button =
 333       browser_view()->window_switcher_button();
 334   if (window_switcher_button && window_switcher_button->visible()) {
 335     gfx::RectF rect_in_window_switcher_coords_f(rect);
 336     View::ConvertRectToTarget(this, window_switcher_button,
 337         &rect_in_window_switcher_coords_f);
 338     gfx::Rect rect_in_window_switcher_coords = gfx::ToEnclosingRect(
 339         rect_in_window_switcher_coords_f);
 340
 341     if (window_switcher_button->HitTestRect(rect_in_window_switcher_coords))
 342       return false;
 343   }
 344
 345   // We claim |rect| because it is above the bottom of the tabstrip, but
 346   // neither in the tabstrip nor in the window switcher button. In particular,
 347   // the avatar label/button is left of the tabstrip and the window controls
 348   // are right of the tabstrip.
 349   return true;
 350 }
 351
 352 void OpaqueBrowserFrameView::GetAccessibleState(
 353     ui::AccessibleViewState* state) {
 354   state->role = ui::AccessibilityTypes::ROLE_TITLEBAR;
 355 }
 356
 357 ///////////////////////////////////////////////////////////////////////////////
 358 // OpaqueBrowserFrameView, views::ButtonListener implementation:
 359
 360 void OpaqueBrowserFrameView::ButtonPressed(views::Button* sender,
 361                                            const ui::Event& event) {
 362   if (sender == minimize_button_)
 363     frame()->Minimize();
 364   else if (sender == maximize_button_)
 365     frame()->Maximize();
 366   else if (sender == restore_button_)
 367     frame()->Restore();
 368   else if (sender == close_button_)
 369     frame()->Close();
 370   else if (sender == new_avatar_button())
 371     browser_view()->ShowAvatarBubbleFromAvatarButton();
 372 }
 373
 374 void OpaqueBrowserFrameView::OnMenuButtonClicked(views::View* source,
 375                                                  const gfx::Point& point) {
 376 #if defined(OS_LINUX)
 377   views::MenuRunner menu_runner(frame()->GetSystemMenuModel());
 378   ignore_result(menu_runner.RunMenuAt(browser_view()->GetWidget(),
 379                                       window_icon_,
 380                                       window_icon_->GetBoundsInScreen(),
 381                                       views::MenuItemView::TOPLEFT,
 382                                       ui::MENU_SOURCE_MOUSE,
 383                                       views::MenuRunner::HAS_MNEMONICS));
 384 #endif
 385 }
 386
 387 ///////////////////////////////////////////////////////////////////////////////
 388 // OpaqueBrowserFrameView, TabIconView::TabContentsProvider implementation:
 389
 390 bool OpaqueBrowserFrameView::ShouldTabIconViewAnimate() const {
 391   // This function is queried during the creation of the window as the
 392   // TabIconView we host is initialized, so we need to NULL check the selected
 393   // WebContents because in this condition there is not yet a selected tab.
 394   WebContents* current_tab = browser_view()->GetActiveWebContents();
 395   return current_tab ? current_tab->IsLoading() : false;
 396 }
 397
 398 gfx::ImageSkia OpaqueBrowserFrameView::GetFaviconForTabIconView() {
 399   views::WidgetDelegate* delegate = frame()->widget_delegate();
 400   if (!delegate) {
 401     LOG(WARNING) << "delegate is NULL, returning safe default.";
 402     return gfx::ImageSkia();
 403   }
 404   return delegate->GetWindowIcon();
 405 }
 406
 407 ///////////////////////////////////////////////////////////////////////////////
 408 // OpaqueBrowserFrameView, protected:
 409
 410 void OpaqueBrowserFrameView::Observe(
 411     int type,
 412     const content::NotificationSource& source,
 413     const content::NotificationDetails& details) {
 414   switch (type) {
 415     case chrome::NOTIFICATION_PROFILE_CACHED_INFO_CHANGED:
 416       if (browser_view() ->IsRegularOrGuestSession() &&
 417           switches::IsNewProfileManagement())
 418         UpdateNewStyleAvatarInfo(this, NewAvatarButton::THEMED_BUTTON);
 419       else
 420         UpdateAvatarInfo();
 421       break;
 422     default:
 423       NOTREACHED() << "Got a notification we didn't register for!";
 424       break;
 425   }
 426 }
 427
 428 ///////////////////////////////////////////////////////////////////////////////
 429 // OpaqueBrowserFrameView, OpaqueBrowserFrameViewLayoutDelegate implementation:
 430
 431 bool OpaqueBrowserFrameView::ShouldShowWindowIcon() const {
 432   views::WidgetDelegate* delegate = frame()->widget_delegate();
 433   return ShouldShowWindowTitleBar() && delegate &&
 434          delegate->ShouldShowWindowIcon();
 435 }
 436
 437 bool OpaqueBrowserFrameView::ShouldShowWindowTitle() const {
 438   // |delegate| may be NULL if called from callback of InputMethodChanged while
 439   // a window is being destroyed.
 440   // See more discussion at http://crosbug.com/8958
 441   views::WidgetDelegate* delegate = frame()->widget_delegate();
 442   return ShouldShowWindowTitleBar() && delegate &&
 443          delegate->ShouldShowWindowTitle();
 444 }
 445
 446 base::string16 OpaqueBrowserFrameView::GetWindowTitle() const {
 447   return frame()->widget_delegate()->GetWindowTitle();
 448 }
 449
 450 int OpaqueBrowserFrameView::GetIconSize() const {
 451 #if defined(OS_WIN)
 452   // This metric scales up if either the titlebar height or the titlebar font
 453   // size are increased.
 454   return GetSystemMetrics(SM_CYSMICON);
 455 #else
 456   return std::max(BrowserFrame::GetTitleFontList().GetHeight(),
 457                   kIconMinimumSize);
 458 #endif
 459 }
 460
 461 bool OpaqueBrowserFrameView::ShouldLeaveOffsetNearTopBorder() const {
 462   return frame()->ShouldLeaveOffsetNearTopBorder();
 463 }
 464
 465 gfx::Size OpaqueBrowserFrameView::GetBrowserViewMinimumSize() const {
 466   return browser_view()->GetMinimumSize();
 467 }
 468
 469 bool OpaqueBrowserFrameView::ShouldShowCaptionButtons() const {
 470   if (!OpaqueBrowserFrameViewLayout::ShouldAddDefaultCaptionButtons())
 471     return false;
 472   return ShouldShowWindowTitleBar();
 473 }
 474
 475 bool OpaqueBrowserFrameView::ShouldShowAvatar() const {
 476   return browser_view()->ShouldShowAvatar();
 477 }
 478
 479 bool OpaqueBrowserFrameView::IsRegularOrGuestSession() const {
 480   return browser_view()->IsRegularOrGuestSession();
 481 }
 482
 483 gfx::ImageSkia OpaqueBrowserFrameView::GetOTRAvatarIcon() const {
 484   return browser_view()->GetOTRAvatarIcon();
 485 }
 486
 487 bool OpaqueBrowserFrameView::IsMaximized() const {
 488   return frame()->IsMaximized();
 489 }
 490
 491 bool OpaqueBrowserFrameView::IsMinimized() const {
 492   return frame()->IsMinimized();
 493 }
 494
 495 bool OpaqueBrowserFrameView::IsFullscreen() const {
 496   return frame()->IsFullscreen();
 497 }
 498
 499 bool OpaqueBrowserFrameView::IsTabStripVisible() const {
 500   return browser_view()->IsTabStripVisible();
 501 }
 502
 503 int OpaqueBrowserFrameView::GetTabStripHeight() const {
 504   return browser_view()->GetTabStripHeight();
 505 }
 506
 507 int OpaqueBrowserFrameView::GetAdditionalReservedSpaceInTabStrip() const {
 508   // We don't have the sysmenu buttons in Windows 8 metro mode. However there
 509   // are buttons like the window switcher which are drawn in the non client
 510   // are in the BrowserView. We need to ensure that the tab strip does not
 511   // draw on the window switcher button.
 512   views::View* button = browser_view()->window_switcher_button();
 513   return button ? button->width() : 0;
 514 }
 515
 516 gfx::Size OpaqueBrowserFrameView::GetTabstripPreferredSize() const {
 517   gfx::Size s = browser_view()->tabstrip()->GetPreferredSize();
 518   return s;
 519 }
 520
 521 ///////////////////////////////////////////////////////////////////////////////
 522 // OpaqueBrowserFrameView, views::View overrides:
 523
 524 void OpaqueBrowserFrameView::OnPaint(gfx::Canvas* canvas) {
 525   if (frame()->IsFullscreen())
 526     return;  // Nothing is visible, so don't bother to paint.
 527
 528   if (layout_->IsTitleBarCondensed())
 529     PaintMaximizedFrameBorder(canvas);
 530   else
 531     PaintRestoredFrameBorder(canvas);
 532
 533   // The window icon and title are painted by their respective views.
 534   /* TODO(pkasting):  If this window is active, we should also draw a drop
 535    * shadow on the title.  This is tricky, because we don't want to hardcode a
 536    * shadow color (since we want to work with various themes), but we can't
 537    * alpha-blend either (since the Windows text APIs don't really do this).
 538    * So we'd need to sample the background color at the right location and
 539    * synthesize a good shadow color. */
 540
 541   if (browser_view()->IsToolbarVisible())
 542     PaintToolbarBackground(canvas);
 543   if (!layout_->IsTitleBarCondensed())
 544     PaintRestoredClientEdge(canvas);
 545 }
 546
 547 ///////////////////////////////////////////////////////////////////////////////
 548 // OpaqueBrowserFrameView, private:
 549
 550 views::ImageButton* OpaqueBrowserFrameView::InitWindowCaptionButton(
 551     int normal_image_id,
 552     int hot_image_id,
 553     int pushed_image_id,
 554     int mask_image_id,
 555     int accessibility_string_id,
 556     ViewID view_id) {
 557   views::ImageButton* button = new views::ImageButton(this);
 558   ui::ThemeProvider* tp = frame()->GetThemeProvider();
 559   button->SetImage(views::CustomButton::STATE_NORMAL,
 560                    tp->GetImageSkiaNamed(normal_image_id));
 561   button->SetImage(views::CustomButton::STATE_HOVERED,
 562                    tp->GetImageSkiaNamed(hot_image_id));
 563   button->SetImage(views::CustomButton::STATE_PRESSED,
 564                    tp->GetImageSkiaNamed(pushed_image_id));
 565   if (browser_view()->IsBrowserTypeNormal()) {
 566     button->SetBackground(
 567         tp->GetColor(ThemeProperties::COLOR_BUTTON_BACKGROUND),
 568         tp->GetImageSkiaNamed(IDR_THEME_WINDOW_CONTROL_BACKGROUND),
 569         tp->GetImageSkiaNamed(mask_image_id));
 570   }
 571   button->SetAccessibleName(
 572       l10n_util::GetStringUTF16(accessibility_string_id));
 573   button->set_id(view_id);
 574   AddChildView(button);
 575   return button;
 576 }
 577
 578 int OpaqueBrowserFrameView::FrameBorderThickness(bool restored) const {
 579   return layout_->FrameBorderThickness(restored);
 580 }
 581
 582 int OpaqueBrowserFrameView::TopResizeHeight() const {
 583   return FrameBorderThickness(false) - kTopResizeAdjust;
 584 }
 585
 586 int OpaqueBrowserFrameView::NonClientBorderThickness() const {
 587   return layout_->NonClientBorderThickness();
 588 }
 589
 590 gfx::Rect OpaqueBrowserFrameView::IconBounds() const {
 591   return layout_->IconBounds();
 592 }
 593
 594 bool OpaqueBrowserFrameView::ShouldShowWindowTitleBar() const {
 595 #if defined(OS_LINUX) && !defined(OS_CHROMEOS)
 596   // Do not show the custom title bar if the system title bar option is enabled.
 597   if (!frame()->UseCustomFrame())
 598     return false;
 599 #endif
 600
 601   // Do not show caption buttons if the window manager is forcefully providing a
 602   // title bar (e.g., in Ubuntu Unity, if the window is maximized).
 603   if (!views::ViewsDelegate::views_delegate)
 604     return true;
 605   return !views::ViewsDelegate::views_delegate->WindowManagerProvidesTitleBar(
 606               IsMaximized());
 607 }
 608
 609 void OpaqueBrowserFrameView::PaintRestoredFrameBorder(gfx::Canvas* canvas) {
 610   frame_background_->set_frame_color(GetFrameColor());
 611   frame_background_->set_theme_image(GetFrameImage());
 612   frame_background_->set_theme_overlay_image(GetFrameOverlayImage());
 613   frame_background_->set_top_area_height(GetTopAreaHeight());
 614
 615   ui::ThemeProvider* tp = GetThemeProvider();
 616   frame_background_->SetSideImages(
 617       tp->GetImageSkiaNamed(IDR_WINDOW_LEFT_SIDE),
 618       tp->GetImageSkiaNamed(IDR_WINDOW_TOP_CENTER),
 619       tp->GetImageSkiaNamed(IDR_WINDOW_RIGHT_SIDE),
 620       tp->GetImageSkiaNamed(IDR_WINDOW_BOTTOM_CENTER));
 621   frame_background_->SetCornerImages(
 622       tp->GetImageSkiaNamed(IDR_WINDOW_TOP_LEFT_CORNER),
 623       tp->GetImageSkiaNamed(IDR_WINDOW_TOP_RIGHT_CORNER),
 624       tp->GetImageSkiaNamed(IDR_WINDOW_BOTTOM_LEFT_CORNER),
 625       tp->GetImageSkiaNamed(IDR_WINDOW_BOTTOM_RIGHT_CORNER));
 626   frame_background_->PaintRestored(canvas, this);
 627
 628   // Note: When we don't have a toolbar, we need to draw some kind of bottom
 629   // edge here.  Because the App Window graphics we use for this have an
 630   // attached client edge and their sizing algorithm is a little involved, we do
 631   // all this in PaintRestoredClientEdge().
 632 }
 633
 634 void OpaqueBrowserFrameView::PaintMaximizedFrameBorder(gfx::Canvas* canvas) {
 635   frame_background_->set_frame_color(GetFrameColor());
 636   frame_background_->set_theme_image(GetFrameImage());
 637   frame_background_->set_theme_overlay_image(GetFrameOverlayImage());
 638   frame_background_->set_top_area_height(GetTopAreaHeight());
 639
 640   // Theme frame must be aligned with the tabstrip as if we were
 641   // in restored mode.  Note that the top of the tabstrip is
 642   // kTabstripTopShadowThickness px off the top of the screen.
 643   int restored_tabstrip_top_inset = 0;
 644   if (browser_view()->IsTabStripVisible())
 645     restored_tabstrip_top_inset = layout_->GetTabStripInsetsTop(true);
 646   frame_background_->set_theme_background_y(
 647       -restored_tabstrip_top_inset - kTabstripTopShadowThickness);
 648
 649   frame_background_->PaintMaximized(canvas, this);
 650
 651   // TODO(jamescook): Migrate this into FrameBackground.
 652   if (!browser_view()->IsToolbarVisible()) {
 653     // There's no toolbar to edge the frame border, so we need to draw a bottom
 654     // edge.  The graphic we use for this has a built in client edge, so we clip
 655     // it off the bottom.
 656     gfx::ImageSkia* top_center =
 657         GetThemeProvider()->GetImageSkiaNamed(IDR_APP_TOP_CENTER);
 658     int edge_height = top_center->height() - kClientEdgeThickness;
 659     canvas->TileImageInt(*top_center, 0,
 660         frame()->client_view()->y() - edge_height, width(), edge_height);
 661   }
 662 }
 663
 664 void OpaqueBrowserFrameView::PaintToolbarBackground(gfx::Canvas* canvas) {
 665   gfx::Rect toolbar_bounds(browser_view()->GetToolbarBounds());
 666   if (toolbar_bounds.IsEmpty())
 667     return;
 668   gfx::Point toolbar_origin(toolbar_bounds.origin());
 669   ConvertPointToTarget(browser_view(), this, &toolbar_origin);
 670   toolbar_bounds.set_origin(toolbar_origin);
 671
 672   int x = toolbar_bounds.x();
 673   int w = toolbar_bounds.width();
 674   int y = toolbar_bounds.y();
 675   int h = toolbar_bounds.height();
 676
 677   // Gross hack: We split the toolbar images into two pieces, since sometimes
 678   // (popup mode) the toolbar isn't tall enough to show the whole image.  The
 679   // split happens between the top shadow section and the bottom gradient
 680   // section so that we never break the gradient.
 681   int split_point = kFrameShadowThickness * 2;
 682   int bottom_y = y + split_point;
 683   ui::ThemeProvider* tp = GetThemeProvider();
 684   gfx::ImageSkia* toolbar_left = tp->GetImageSkiaNamed(
 685       IDR_CONTENT_TOP_LEFT_CORNER);
 686   int bottom_edge_height = std::min(toolbar_left->height(), h) - split_point;
 687
 688   // Split our canvas out so we can mask out the corners of the toolbar
 689   // without masking out the frame.
 690   canvas->SaveLayerAlpha(
 691       255, gfx::Rect(x - kClientEdgeThickness, y, w + kClientEdgeThickness * 3,
 692                      h));
 693
 694   // Paint the bottom rect.
 695   canvas->FillRect(gfx::Rect(x, bottom_y, w, bottom_edge_height),
 696                    tp->GetColor(ThemeProperties::COLOR_TOOLBAR));
 697
 698   // Tile the toolbar image starting at the frame edge on the left and where the
 699   // horizontal tabstrip is (or would be) on the top.
 700   gfx::ImageSkia* theme_toolbar = tp->GetImageSkiaNamed(IDR_THEME_TOOLBAR);
 701   canvas->TileImageInt(*theme_toolbar,
 702                        x + GetThemeBackgroundXInset(),
 703                        bottom_y - GetTopInset(),
 704                        x, bottom_y, w, theme_toolbar->height());
 705
 706   // Draw rounded corners for the tab.
 707   gfx::ImageSkia* toolbar_left_mask =
 708       tp->GetImageSkiaNamed(IDR_CONTENT_TOP_LEFT_CORNER_MASK);
 709   gfx::ImageSkia* toolbar_right_mask =
 710       tp->GetImageSkiaNamed(IDR_CONTENT_TOP_RIGHT_CORNER_MASK);
 711
 712   // We mask out the corners by using the DestinationIn transfer mode,
 713   // which keeps the RGB pixels from the destination and the alpha from
 714   // the source.
 715   SkPaint paint;
 716   paint.setXfermodeMode(SkXfermode::kDstIn_Mode);
 717
 718   // Mask the left edge.
 719   int left_x = x - kContentEdgeShadowThickness;
 720   canvas->DrawImageInt(*toolbar_left_mask, 0, 0, toolbar_left_mask->width(),
 721                        split_point, left_x, y, toolbar_left_mask->width(),
 722                        split_point, false, paint);
 723   canvas->DrawImageInt(*toolbar_left_mask, 0,
 724       toolbar_left_mask->height() - bottom_edge_height,
 725       toolbar_left_mask->width(), bottom_edge_height, left_x, bottom_y,
 726       toolbar_left_mask->width(), bottom_edge_height, false, paint);
 727
 728   // Mask the right edge.
 729   int right_x =
 730       x + w - toolbar_right_mask->width() + kContentEdgeShadowThickness;
 731   canvas->DrawImageInt(*toolbar_right_mask, 0, 0, toolbar_right_mask->width(),
 732                        split_point, right_x, y, toolbar_right_mask->width(),
 733                        split_point, false, paint);
 734   canvas->DrawImageInt(*toolbar_right_mask, 0,
 735       toolbar_right_mask->height() - bottom_edge_height,
 736       toolbar_right_mask->width(), bottom_edge_height, right_x, bottom_y,
 737       toolbar_right_mask->width(), bottom_edge_height, false, paint);
 738   canvas->Restore();
 739
 740   canvas->DrawImageInt(*toolbar_left, 0, 0, toolbar_left->width(), split_point,
 741                        left_x, y, toolbar_left->width(), split_point, false);
 742   canvas->DrawImageInt(*toolbar_left, 0,
 743       toolbar_left->height() - bottom_edge_height, toolbar_left->width(),
 744       bottom_edge_height, left_x, bottom_y, toolbar_left->width(),
 745       bottom_edge_height, false);
 746
 747   gfx::ImageSkia* toolbar_center =
 748       tp->GetImageSkiaNamed(IDR_CONTENT_TOP_CENTER);
 749   canvas->TileImageInt(*toolbar_center, 0, 0, left_x + toolbar_left->width(),
 750       y, right_x - (left_x + toolbar_left->width()),
 751       split_point);
 752
 753   gfx::ImageSkia* toolbar_right = tp->GetImageSkiaNamed(
 754       IDR_CONTENT_TOP_RIGHT_CORNER);
 755   canvas->DrawImageInt(*toolbar_right, 0, 0, toolbar_right->width(),
 756       split_point, right_x, y, toolbar_right->width(), split_point, false);
 757   canvas->DrawImageInt(*toolbar_right, 0,
 758       toolbar_right->height() - bottom_edge_height, toolbar_right->width(),
 759       bottom_edge_height, right_x, bottom_y, toolbar_right->width(),
 760       bottom_edge_height, false);
 761
 762   // Draw the content/toolbar separator.
 763   canvas->FillRect(
 764       gfx::Rect(x + kClientEdgeThickness,
 765                 toolbar_bounds.bottom() - kClientEdgeThickness,
 766                 w - (2 * kClientEdgeThickness),
 767                 kClientEdgeThickness),
 768       ThemeProperties::GetDefaultColor(
 769           ThemeProperties::COLOR_TOOLBAR_SEPARATOR));
 770 }
 771
 772 void OpaqueBrowserFrameView::PaintRestoredClientEdge(gfx::Canvas* canvas) {
 773   ui::ThemeProvider* tp = GetThemeProvider();
 774   int client_area_top = frame()->client_view()->y();
 775   int image_top = client_area_top;
 776
 777   gfx::Rect client_area_bounds =
 778       layout_->CalculateClientAreaBounds(width(), height());
 779   SkColor toolbar_color = tp->GetColor(ThemeProperties::COLOR_TOOLBAR);
 780
 781   if (browser_view()->IsToolbarVisible()) {
 782     // The client edge images always start below the toolbar corner images.  The
 783     // client edge filled rects start there or at the bottom of the toolbar,
 784     // whichever is shorter.
 785     gfx::Rect toolbar_bounds(browser_view()->GetToolbarBounds());
 786     image_top += toolbar_bounds.y() +
 787         tp->GetImageSkiaNamed(IDR_CONTENT_TOP_LEFT_CORNER)->height();
 788     client_area_top = std::min(image_top,
 789         client_area_top + toolbar_bounds.bottom() - kClientEdgeThickness);
 790   } else if (!browser_view()->IsTabStripVisible()) {
 791     // The toolbar isn't going to draw a client edge for us, so draw one
 792     // ourselves.
 793     gfx::ImageSkia* top_left = tp->GetImageSkiaNamed(IDR_APP_TOP_LEFT);
 794     gfx::ImageSkia* top_center = tp->GetImageSkiaNamed(IDR_APP_TOP_CENTER);
 795     gfx::ImageSkia* top_right = tp->GetImageSkiaNamed(IDR_APP_TOP_RIGHT);
 796     int top_edge_y = client_area_top - top_center->height();
 797     int height = client_area_top - top_edge_y;
 798
 799     canvas->DrawImageInt(*top_left, 0, 0, top_left->width(), height,
 800         client_area_bounds.x() - top_left->width(), top_edge_y,
 801         top_left->width(), height, false);
 802     canvas->TileImageInt(*top_center, 0, 0, client_area_bounds.x(), top_edge_y,
 803       client_area_bounds.width(), std::min(height, top_center->height()));
 804     canvas->DrawImageInt(*top_right, 0, 0, top_right->width(), height,
 805         client_area_bounds.right(), top_edge_y,
 806         top_right->width(), height, false);
 807
 808     // Draw the toolbar color across the top edge.
 809     canvas->FillRect(gfx::Rect(client_area_bounds.x() - kClientEdgeThickness,
 810         client_area_top - kClientEdgeThickness,
 811         client_area_bounds.width() + (2 * kClientEdgeThickness),
 812         kClientEdgeThickness), toolbar_color);
 813   }
 814
 815   int client_area_bottom =
 816       std::max(client_area_top, height() - NonClientBorderThickness());
 817   int image_height = client_area_bottom - image_top;
 818
 819   // Draw the client edge images.
 820   gfx::ImageSkia* right = tp->GetImageSkiaNamed(IDR_CONTENT_RIGHT_SIDE);
 821   canvas->TileImageInt(*right, client_area_bounds.right(), image_top,
 822                        right->width(), image_height);
 823   canvas->DrawImageInt(
 824       *tp->GetImageSkiaNamed(IDR_CONTENT_BOTTOM_RIGHT_CORNER),
 825       client_area_bounds.right(), client_area_bottom);
 826   gfx::ImageSkia* bottom = tp->GetImageSkiaNamed(IDR_CONTENT_BOTTOM_CENTER);
 827   canvas->TileImageInt(*bottom, client_area_bounds.x(),
 828       client_area_bottom, client_area_bounds.width(),
 829       bottom->height());
 830   gfx::ImageSkia* bottom_left =
 831       tp->GetImageSkiaNamed(IDR_CONTENT_BOTTOM_LEFT_CORNER);
 832   canvas->DrawImageInt(*bottom_left,
 833       client_area_bounds.x() - bottom_left->width(), client_area_bottom);
 834   gfx::ImageSkia* left = tp->GetImageSkiaNamed(IDR_CONTENT_LEFT_SIDE);
 835   canvas->TileImageInt(*left, client_area_bounds.x() - left->width(),
 836                        image_top, left->width(), image_height);
 837
 838   // Draw the toolbar color so that the client edges show the right color even
 839   // where not covered by the toolbar image.  NOTE: We do this after drawing the
 840   // images because the images are meant to alpha-blend atop the frame whereas
 841   // these rects are meant to be fully opaque, without anything overlaid.
 842   canvas->FillRect(gfx::Rect(client_area_bounds.x() - kClientEdgeThickness,
 843       client_area_top, kClientEdgeThickness,
 844       client_area_bottom + kClientEdgeThickness - client_area_top),
 845        toolbar_color);
 846   canvas->FillRect(gfx::Rect(client_area_bounds.x(), client_area_bottom,
 847                              client_area_bounds.width(), kClientEdgeThickness),
 848                    toolbar_color);
 849   canvas->FillRect(gfx::Rect(client_area_bounds.right(), client_area_top,
 850       kClientEdgeThickness,
 851       client_area_bottom + kClientEdgeThickness - client_area_top),
 852       toolbar_color);
 853 }
 854
 855 SkColor OpaqueBrowserFrameView::GetFrameColor() const {
 856   bool is_incognito = browser_view()->IsOffTheRecord();
 857   ThemeProperties::OverwritableByUserThemeProperty color_id;
 858   if (ShouldPaintAsActive()) {
 859     color_id = is_incognito ?
 860                ThemeProperties::COLOR_FRAME_INCOGNITO :
 861                ThemeProperties::COLOR_FRAME;
 862   } else {
 863     color_id = is_incognito ?
 864                ThemeProperties::COLOR_FRAME_INCOGNITO_INACTIVE :
 865                ThemeProperties::COLOR_FRAME_INACTIVE;
 866   }
 867
 868   if (browser_view()->IsBrowserTypeNormal() ||
 869       platform_observer_->IsUsingNativeTheme()) {
 870     return GetThemeProvider()->GetColor(color_id);
 871   }
 872
 873   // Never theme app and popup windows unless the |platform_observer_|
 874   // requested an override.
 875   return ThemeProperties::GetDefaultColor(color_id);
 876 }
 877
 878 gfx::ImageSkia* OpaqueBrowserFrameView::GetFrameImage() const {
 879   bool is_incognito = browser_view()->IsOffTheRecord();
 880   int resource_id;
 881   if (browser_view()->IsBrowserTypeNormal()) {
 882     if (ShouldPaintAsActive()) {
 883       resource_id = is_incognito ?
 884           IDR_THEME_FRAME_INCOGNITO : IDR_THEME_FRAME;
 885     } else {
 886       resource_id = is_incognito ?
 887           IDR_THEME_FRAME_INCOGNITO_INACTIVE : IDR_THEME_FRAME_INACTIVE;
 888     }
 889     return GetThemeProvider()->GetImageSkiaNamed(resource_id);
 890   }
 891   if (ShouldPaintAsActive()) {
 892     resource_id = is_incognito ?
 893         IDR_THEME_FRAME_INCOGNITO : IDR_FRAME;
 894   } else {
 895     resource_id = is_incognito ?
 896         IDR_THEME_FRAME_INCOGNITO_INACTIVE : IDR_THEME_FRAME_INACTIVE;
 897   }
 898
 899   if (platform_observer_->IsUsingNativeTheme()) {
 900     // We want to use theme images provided by the platform theme when enabled,
 901     // even if we are an app or popup window.
 902     return GetThemeProvider()->GetImageSkiaNamed(resource_id);
 903   }
 904
 905   // Otherwise, never theme app and popup windows.
 906   ui::ResourceBundle& rb = ui::ResourceBundle::GetSharedInstance();
 907   return rb.GetImageSkiaNamed(resource_id);
 908 }
 909
 910 gfx::ImageSkia* OpaqueBrowserFrameView::GetFrameOverlayImage() const {
 911   ui::ThemeProvider* tp = GetThemeProvider();
 912   if (tp->HasCustomImage(IDR_THEME_FRAME_OVERLAY) &&
 913       browser_view()->IsBrowserTypeNormal() &&
 914       !browser_view()->IsOffTheRecord()) {
 915     return tp->GetImageSkiaNamed(ShouldPaintAsActive() ?
 916         IDR_THEME_FRAME_OVERLAY : IDR_THEME_FRAME_OVERLAY_INACTIVE);
 917   }
 918   return NULL;
 919 }
 920
 921 int OpaqueBrowserFrameView::GetTopAreaHeight() const {
 922   gfx::ImageSkia* frame_image = GetFrameImage();
 923   int top_area_height = frame_image->height();
 924   if (browser_view()->IsTabStripVisible()) {
 925     top_area_height = std::max(top_area_height,
 926       GetBoundsForTabStrip(browser_view()->tabstrip()).bottom());
 927   }
 928   return top_area_height;
 929 }