src/ui/views/window/custom_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 "ui/views/window/custom_frame_view.h"
   6
   7 #include <algorithm>
   8
   9 #include "base/strings/utf_string_conversions.h"
  10 #include "grit/ui_resources.h"
  11 #include "grit/ui_strings.h"
  12 #include "ui/base/hit_test.h"
  13 #include "ui/base/l10n/l10n_util.h"
  14 #include "ui/base/resource/resource_bundle.h"
  15 #include "ui/gfx/canvas.h"
  16 #include "ui/gfx/font.h"
  17 #include "ui/gfx/image/image.h"
  18 #include "ui/gfx/path.h"
  19 #include "ui/views/color_constants.h"
  20 #include "ui/views/controls/button/image_button.h"
  21 #include "ui/views/views_delegate.h"
  22 #include "ui/views/widget/native_widget_private.h"
  23 #include "ui/views/widget/widget.h"
  24 #include "ui/views/widget/widget_delegate.h"
  25 #include "ui/views/window/client_view.h"
  26 #include "ui/views/window/frame_background.h"
  27 #include "ui/views/window/window_resources.h"
  28 #include "ui/views/window/window_shape.h"
  29
  30 namespace views {
  31
  32 namespace {
  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 // In the window corners, the resize areas don't actually expand bigger, but the
  38 // 16 px at the end of each edge triggers diagonal resizing.
  39 const int kResizeAreaCornerSize = 16;
  40 // The titlebar never shrinks too short to show the caption button plus some
  41 // padding below it.
  42 const int kCaptionButtonHeightWithPadding = 19;
  43 // The titlebar has a 2 px 3D edge along the top and bottom.
  44 const int kTitlebarTopAndBottomEdgeThickness = 2;
  45 // The icon is inset 2 px from the left frame border.
  46 const int kIconLeftSpacing = 2;
  47 // The icon never shrinks below 16 px on a side.
  48 const int kIconMinimumSize = 16;
  49 // The space between the window icon and the title text.
  50 const int kTitleIconOffsetX = 4;
  51 // The space between the title text and the caption buttons.
  52 const int kTitleCaptionSpacing = 5;
  53
  54 #if defined(OS_CHROMEOS)
  55 // Chrome OS uses a dark gray.
  56 const SkColor kDefaultColorFrame = SkColorSetRGB(109, 109, 109);
  57 const SkColor kDefaultColorFrameInactive = SkColorSetRGB(176, 176, 176);
  58 #else
  59 // Windows and Linux use a blue.
  60 const SkColor kDefaultColorFrame = SkColorSetRGB(66, 116, 201);
  61 const SkColor kDefaultColorFrameInactive = SkColorSetRGB(161, 182, 228);
  62 #endif
  63
  64 const gfx::FontList& GetTitleFontList() {
  65   static const gfx::FontList title_font_list =
  66       internal::NativeWidgetPrivate::GetWindowTitleFontList();
  67   return title_font_list;
  68 }
  69
  70 }  // namespace
  71
  72 ///////////////////////////////////////////////////////////////////////////////
  73 // CustomFrameView, public:
  74
  75 CustomFrameView::CustomFrameView()
  76     : frame_(NULL),
  77       window_icon_(NULL),
  78       minimize_button_(NULL),
  79       maximize_button_(NULL),
  80       restore_button_(NULL),
  81       close_button_(NULL),
  82       should_show_maximize_button_(false),
  83       frame_background_(new FrameBackground()) {
  84 }
  85
  86 CustomFrameView::~CustomFrameView() {
  87 }
  88
  89 void CustomFrameView::Init(Widget* frame) {
  90   frame_ = frame;
  91
  92   close_button_ = new ImageButton(this);
  93   close_button_->SetAccessibleName(
  94       l10n_util::GetStringUTF16(IDS_APP_ACCNAME_CLOSE));
  95
  96   // Close button images will be set in LayoutWindowControls().
  97   AddChildView(close_button_);
  98
  99   minimize_button_ = InitWindowCaptionButton(IDS_APP_ACCNAME_MINIMIZE,
 100       IDR_MINIMIZE, IDR_MINIMIZE_H, IDR_MINIMIZE_P);
 101
 102   maximize_button_ = InitWindowCaptionButton(IDS_APP_ACCNAME_MAXIMIZE,
 103       IDR_MAXIMIZE, IDR_MAXIMIZE_H, IDR_MAXIMIZE_P);
 104
 105   restore_button_ = InitWindowCaptionButton(IDS_APP_ACCNAME_RESTORE,
 106       IDR_RESTORE, IDR_RESTORE_H, IDR_RESTORE_P);
 107
 108   should_show_maximize_button_ = frame_->widget_delegate()->CanMaximize();
 109
 110   if (frame_->widget_delegate()->ShouldShowWindowIcon()) {
 111     window_icon_ = new ImageButton(this);
 112     AddChildView(window_icon_);
 113   }
 114 }
 115
 116 ///////////////////////////////////////////////////////////////////////////////
 117 // CustomFrameView, NonClientFrameView implementation:
 118
 119 gfx::Rect CustomFrameView::GetBoundsForClientView() const {
 120   return client_view_bounds_;
 121 }
 122
 123 gfx::Rect CustomFrameView::GetWindowBoundsForClientBounds(
 124     const gfx::Rect& client_bounds) const {
 125   int top_height = NonClientTopBorderHeight();
 126   int border_thickness = NonClientBorderThickness();
 127   return gfx::Rect(client_bounds.x() - border_thickness,
 128                    client_bounds.y() - top_height,
 129                    client_bounds.width() + (2 * border_thickness),
 130                    client_bounds.height() + top_height + border_thickness);
 131 }
 132
 133 int CustomFrameView::NonClientHitTest(const gfx::Point& point) {
 134   // Sanity check.
 135   if (!bounds().Contains(point))
 136     return HTNOWHERE;
 137
 138   int frame_component = frame_->client_view()->NonClientHitTest(point);
 139
 140   // See if we're in the sysmenu region.  (We check the ClientView first to be
 141   // consistent with OpaqueBrowserFrameView; it's not really necessary here.)
 142   gfx::Rect sysmenu_rect(IconBounds());
 143   // In maximized mode we extend the rect to the screen corner to take advantage
 144   // of Fitts' Law.
 145   if (frame_->IsMaximized())
 146     sysmenu_rect.SetRect(0, 0, sysmenu_rect.right(), sysmenu_rect.bottom());
 147   sysmenu_rect.set_x(GetMirroredXForRect(sysmenu_rect));
 148   if (sysmenu_rect.Contains(point))
 149     return (frame_component == HTCLIENT) ? HTCLIENT : HTSYSMENU;
 150
 151   if (frame_component != HTNOWHERE)
 152     return frame_component;
 153
 154   // Then see if the point is within any of the window controls.
 155   if (close_button_->GetMirroredBounds().Contains(point))
 156     return HTCLOSE;
 157   if (restore_button_->GetMirroredBounds().Contains(point))
 158     return HTMAXBUTTON;
 159   if (maximize_button_->GetMirroredBounds().Contains(point))
 160     return HTMAXBUTTON;
 161   if (minimize_button_->GetMirroredBounds().Contains(point))
 162     return HTMINBUTTON;
 163   if (window_icon_ && window_icon_->GetMirroredBounds().Contains(point))
 164     return HTSYSMENU;
 165
 166   int window_component = GetHTComponentForFrame(point, FrameBorderThickness(),
 167       NonClientBorderThickness(), kResizeAreaCornerSize, kResizeAreaCornerSize,
 168       frame_->widget_delegate()->CanResize());
 169   // Fall back to the caption if no other component matches.
 170   return (window_component == HTNOWHERE) ? HTCAPTION : window_component;
 171 }
 172
 173 void CustomFrameView::GetWindowMask(const gfx::Size& size,
 174                                     gfx::Path* window_mask) {
 175   DCHECK(window_mask);
 176   if (frame_->IsMaximized() || !ShouldShowTitleBarAndBorder())
 177     return;
 178
 179   GetDefaultWindowMask(size, window_mask);
 180 }
 181
 182 void CustomFrameView::ResetWindowControls() {
 183   restore_button_->SetState(CustomButton::STATE_NORMAL);
 184   minimize_button_->SetState(CustomButton::STATE_NORMAL);
 185   maximize_button_->SetState(CustomButton::STATE_NORMAL);
 186   // The close button isn't affected by this constraint.
 187 }
 188
 189 void CustomFrameView::UpdateWindowIcon() {
 190   if (window_icon_)
 191     window_icon_->SchedulePaint();
 192 }
 193
 194 void CustomFrameView::UpdateWindowTitle() {
 195   if (frame_->widget_delegate()->ShouldShowWindowTitle())
 196     SchedulePaintInRect(title_bounds_);
 197 }
 198
 199 ///////////////////////////////////////////////////////////////////////////////
 200 // CustomFrameView, View overrides:
 201
 202 void CustomFrameView::OnPaint(gfx::Canvas* canvas) {
 203   if (!ShouldShowTitleBarAndBorder())
 204     return;
 205
 206   if (frame_->IsMaximized())
 207     PaintMaximizedFrameBorder(canvas);
 208   else
 209     PaintRestoredFrameBorder(canvas);
 210   PaintTitleBar(canvas);
 211   if (ShouldShowClientEdge())
 212     PaintRestoredClientEdge(canvas);
 213 }
 214
 215 void CustomFrameView::Layout() {
 216   if (ShouldShowTitleBarAndBorder()) {
 217     LayoutWindowControls();
 218     LayoutTitleBar();
 219   }
 220
 221   LayoutClientView();
 222 }
 223
 224 gfx::Size CustomFrameView::GetPreferredSize() {
 225   return frame_->non_client_view()->GetWindowBoundsForClientBounds(
 226       gfx::Rect(frame_->client_view()->GetPreferredSize())).size();
 227 }
 228
 229 gfx::Size CustomFrameView::GetMinimumSize() {
 230   return frame_->non_client_view()->GetWindowBoundsForClientBounds(
 231       gfx::Rect(frame_->client_view()->GetMinimumSize())).size();
 232 }
 233
 234 gfx::Size CustomFrameView::GetMaximumSize() {
 235   gfx::Size max_size = frame_->client_view()->GetMaximumSize();
 236   gfx::Size converted_size =
 237       frame_->non_client_view()->GetWindowBoundsForClientBounds(
 238           gfx::Rect(max_size)).size();
 239   return gfx::Size(max_size.width() == 0 ? 0 : converted_size.width(),
 240                    max_size.height() == 0 ? 0 : converted_size.height());
 241 }
 242
 243 ///////////////////////////////////////////////////////////////////////////////
 244 // CustomFrameView, ButtonListener implementation:
 245
 246 void CustomFrameView::ButtonPressed(Button* sender, const ui::Event& event) {
 247   if (sender == close_button_)
 248     frame_->Close();
 249   else if (sender == minimize_button_)
 250     frame_->Minimize();
 251   else if (sender == maximize_button_)
 252     frame_->Maximize();
 253   else if (sender == restore_button_)
 254     frame_->Restore();
 255 }
 256
 257 ///////////////////////////////////////////////////////////////////////////////
 258 // CustomFrameView, private:
 259
 260 int CustomFrameView::FrameBorderThickness() const {
 261   return frame_->IsMaximized() ? 0 : kFrameBorderThickness;
 262 }
 263
 264 int CustomFrameView::NonClientBorderThickness() const {
 265   // In maximized mode, we don't show a client edge.
 266   return FrameBorderThickness() +
 267       (ShouldShowClientEdge() ? kClientEdgeThickness : 0);
 268 }
 269
 270 int CustomFrameView::NonClientTopBorderHeight() const {
 271   return std::max(FrameBorderThickness() + IconSize(),
 272                   CaptionButtonY() + kCaptionButtonHeightWithPadding) +
 273       TitlebarBottomThickness();
 274 }
 275
 276 int CustomFrameView::CaptionButtonY() const {
 277   // Maximized buttons start at window top so that even if their images aren't
 278   // drawn flush with the screen edge, they still obey Fitts' Law.
 279   return frame_->IsMaximized() ? FrameBorderThickness() : kFrameShadowThickness;
 280 }
 281
 282 int CustomFrameView::TitlebarBottomThickness() const {
 283   return kTitlebarTopAndBottomEdgeThickness +
 284       (ShouldShowClientEdge() ? kClientEdgeThickness : 0);
 285 }
 286
 287 int CustomFrameView::IconSize() const {
 288 #if defined(OS_WIN)
 289   // This metric scales up if either the titlebar height or the titlebar font
 290   // size are increased.
 291   return GetSystemMetrics(SM_CYSMICON);
 292 #else
 293   return std::max(GetTitleFontList().GetHeight(), kIconMinimumSize);
 294 #endif
 295 }
 296
 297 gfx::Rect CustomFrameView::IconBounds() const {
 298   int size = IconSize();
 299   int frame_thickness = FrameBorderThickness();
 300   // Our frame border has a different "3D look" than Windows'.  Theirs has a
 301   // more complex gradient on the top that they push their icon/title below;
 302   // then the maximized window cuts this off and the icon/title are centered
 303   // in the remaining space.  Because the apparent shape of our border is
 304   // simpler, using the same positioning makes things look slightly uncentered
 305   // with restored windows, so when the window is restored, instead of
 306   // calculating the remaining space from below the frame border, we calculate
 307   // from below the 3D edge.
 308   int unavailable_px_at_top = frame_->IsMaximized() ?
 309       frame_thickness : kTitlebarTopAndBottomEdgeThickness;
 310   // When the icon is shorter than the minimum space we reserve for the caption
 311   // button, we vertically center it.  We want to bias rounding to put extra
 312   // space above the icon, since the 3D edge (+ client edge, for restored
 313   // windows) below looks (to the eye) more like additional space than does the
 314   // 3D edge (or nothing at all, for maximized windows) above; hence the +1.
 315   int y = unavailable_px_at_top + (NonClientTopBorderHeight() -
 316       unavailable_px_at_top - size - TitlebarBottomThickness() + 1) / 2;
 317   return gfx::Rect(frame_thickness + kIconLeftSpacing, y, size, size);
 318 }
 319
 320 bool CustomFrameView::ShouldShowTitleBarAndBorder() const {
 321   if (frame_->IsFullscreen())
 322     return false;
 323
 324   if (ViewsDelegate::views_delegate) {
 325     return ViewsDelegate::views_delegate->ShouldShowTitleBar() &&
 326         !ViewsDelegate::views_delegate->WindowManagerProvidesTitleBar(
 327         frame_->IsMaximized());
 328   }
 329
 330   return true;
 331 }
 332
 333 bool CustomFrameView::ShouldShowClientEdge() const {
 334   return !frame_->IsMaximized() && ShouldShowTitleBarAndBorder();
 335 }
 336
 337 void CustomFrameView::PaintRestoredFrameBorder(gfx::Canvas* canvas) {
 338   frame_background_->set_frame_color(GetFrameColor());
 339   const gfx::ImageSkia* frame_image = GetFrameImage();
 340   frame_background_->set_theme_image(frame_image);
 341   frame_background_->set_top_area_height(frame_image->height());
 342
 343   ui::ResourceBundle& rb = ui::ResourceBundle::GetSharedInstance();
 344
 345   frame_background_->SetCornerImages(
 346       rb.GetImageNamed(IDR_WINDOW_TOP_LEFT_CORNER).ToImageSkia(),
 347       rb.GetImageNamed(IDR_WINDOW_TOP_RIGHT_CORNER).ToImageSkia(),
 348       rb.GetImageNamed(IDR_WINDOW_BOTTOM_LEFT_CORNER).ToImageSkia(),
 349       rb.GetImageNamed(IDR_WINDOW_BOTTOM_RIGHT_CORNER).ToImageSkia());
 350   frame_background_->SetSideImages(
 351       rb.GetImageNamed(IDR_WINDOW_LEFT_SIDE).ToImageSkia(),
 352       rb.GetImageNamed(IDR_WINDOW_TOP_CENTER).ToImageSkia(),
 353       rb.GetImageNamed(IDR_WINDOW_RIGHT_SIDE).ToImageSkia(),
 354       rb.GetImageNamed(IDR_WINDOW_BOTTOM_CENTER).ToImageSkia());
 355
 356   frame_background_->PaintRestored(canvas, this);
 357 }
 358
 359 void CustomFrameView::PaintMaximizedFrameBorder(gfx::Canvas* canvas) {
 360   const gfx::ImageSkia* frame_image = GetFrameImage();
 361   frame_background_->set_theme_image(frame_image);
 362   frame_background_->set_top_area_height(frame_image->height());
 363   frame_background_->PaintMaximized(canvas, this);
 364
 365   ui::ResourceBundle& rb = ui::ResourceBundle::GetSharedInstance();
 366
 367   // TODO(jamescook): Migrate this into FrameBackground.
 368   // The bottom of the titlebar actually comes from the top of the Client Edge
 369   // graphic, with the actual client edge clipped off the bottom.
 370   const gfx::ImageSkia* titlebar_bottom = rb.GetImageNamed(
 371       IDR_APP_TOP_CENTER).ToImageSkia();
 372   int edge_height = titlebar_bottom->height() -
 373       (ShouldShowClientEdge() ? kClientEdgeThickness : 0);
 374   canvas->TileImageInt(*titlebar_bottom, 0,
 375       frame_->client_view()->y() - edge_height, width(), edge_height);
 376 }
 377
 378 void CustomFrameView::PaintTitleBar(gfx::Canvas* canvas) {
 379   WidgetDelegate* delegate = frame_->widget_delegate();
 380
 381   // It seems like in some conditions we can be asked to paint after the window
 382   // that contains us is WM_DESTROYed. At this point, our delegate is NULL. The
 383   // correct long term fix may be to shut down the RootView in WM_DESTROY.
 384   if (!delegate || !delegate->ShouldShowWindowTitle())
 385     return;
 386
 387   gfx::Rect rect = title_bounds_;
 388   rect.set_x(GetMirroredXForRect(title_bounds_));
 389   canvas->DrawStringRect(delegate->GetWindowTitle(), GetTitleFontList(),
 390                          SK_ColorWHITE, rect);
 391 }
 392
 393 void CustomFrameView::PaintRestoredClientEdge(gfx::Canvas* canvas) {
 394   gfx::Rect client_area_bounds = frame_->client_view()->bounds();
 395   int client_area_top = client_area_bounds.y();
 396
 397   ui::ResourceBundle& rb = ui::ResourceBundle::GetSharedInstance();
 398
 399   // Top: left, center, right sides.
 400   const gfx::ImageSkia* top_left = rb.GetImageSkiaNamed(IDR_APP_TOP_LEFT);
 401   const gfx::ImageSkia* top_center = rb.GetImageSkiaNamed(IDR_APP_TOP_CENTER);
 402   const gfx::ImageSkia* top_right = rb.GetImageSkiaNamed(IDR_APP_TOP_RIGHT);
 403   int top_edge_y = client_area_top - top_center->height();
 404   canvas->DrawImageInt(*top_left,
 405                        client_area_bounds.x() - top_left->width(),
 406                        top_edge_y);
 407   canvas->TileImageInt(*top_center,
 408                        client_area_bounds.x(),
 409                        top_edge_y,
 410                        client_area_bounds.width(),
 411                        top_center->height());
 412   canvas->DrawImageInt(*top_right, client_area_bounds.right(), top_edge_y);
 413
 414   // Right side.
 415   const gfx::ImageSkia* right = rb.GetImageSkiaNamed(IDR_CONTENT_RIGHT_SIDE);
 416   int client_area_bottom =
 417       std::max(client_area_top, client_area_bounds.bottom());
 418   int client_area_height = client_area_bottom - client_area_top;
 419   canvas->TileImageInt(*right,
 420                        client_area_bounds.right(),
 421                        client_area_top,
 422                        right->width(),
 423                        client_area_height);
 424
 425   // Bottom: left, center, right sides.
 426   const gfx::ImageSkia* bottom_left =
 427       rb.GetImageSkiaNamed(IDR_CONTENT_BOTTOM_LEFT_CORNER);
 428   const gfx::ImageSkia* bottom_center =
 429       rb.GetImageSkiaNamed(IDR_CONTENT_BOTTOM_CENTER);
 430   const gfx::ImageSkia* bottom_right =
 431       rb.GetImageSkiaNamed(IDR_CONTENT_BOTTOM_RIGHT_CORNER);
 432
 433   canvas->DrawImageInt(*bottom_left,
 434                        client_area_bounds.x() - bottom_left->width(),
 435                        client_area_bottom);
 436
 437   canvas->TileImageInt(*bottom_center,
 438                        client_area_bounds.x(),
 439                        client_area_bottom,
 440                        client_area_bounds.width(),
 441                        bottom_right->height());
 442
 443   canvas->DrawImageInt(*bottom_right,
 444                        client_area_bounds.right(),
 445                        client_area_bottom);
 446   // Left side.
 447   const gfx::ImageSkia* left = rb.GetImageSkiaNamed(IDR_CONTENT_LEFT_SIDE);
 448   canvas->TileImageInt(*left,
 449                        client_area_bounds.x() - left->width(),
 450                        client_area_top,
 451                        left->width(),
 452                        client_area_height);
 453
 454   // Draw the color to fill in the edges.
 455   canvas->FillRect(gfx::Rect(client_area_bounds.x() - 1,
 456                              client_area_top - 1,
 457                              client_area_bounds.width() + 1,
 458                              client_area_bottom - client_area_top + 1),
 459                    kClientEdgeColor);
 460 }
 461
 462 SkColor CustomFrameView::GetFrameColor() const {
 463   return frame_->IsActive() ? kDefaultColorFrame : kDefaultColorFrameInactive;
 464 }
 465
 466 const gfx::ImageSkia* CustomFrameView::GetFrameImage() const {
 467   return ui::ResourceBundle::GetSharedInstance().GetImageNamed(
 468       frame_->IsActive() ? IDR_FRAME : IDR_FRAME_INACTIVE).ToImageSkia();
 469 }
 470
 471 void CustomFrameView::LayoutWindowControls() {
 472   close_button_->SetImageAlignment(ImageButton::ALIGN_LEFT,
 473                                    ImageButton::ALIGN_BOTTOM);
 474   int caption_y = CaptionButtonY();
 475   bool is_maximized = frame_->IsMaximized();
 476   // There should always be the same number of non-shadow pixels visible to the
 477   // side of the caption buttons.  In maximized mode we extend the rightmost
 478   // button to the screen corner to obey Fitts' Law.
 479   int right_extra_width = is_maximized ?
 480       (kFrameBorderThickness - kFrameShadowThickness) : 0;
 481   gfx::Size close_button_size = close_button_->GetPreferredSize();
 482   close_button_->SetBounds(width() - FrameBorderThickness() -
 483       right_extra_width - close_button_size.width(), caption_y,
 484       close_button_size.width() + right_extra_width,
 485       close_button_size.height());
 486
 487   // When the window is restored, we show a maximized button; otherwise, we show
 488   // a restore button.
 489   bool is_restored = !is_maximized && !frame_->IsMinimized();
 490   ImageButton* invisible_button = is_restored ? restore_button_
 491                                               : maximize_button_;
 492   invisible_button->SetVisible(false);
 493
 494   ImageButton* visible_button = is_restored ? maximize_button_
 495                                             : restore_button_;
 496   FramePartImage normal_part, hot_part, pushed_part;
 497   int next_button_x;
 498   if (should_show_maximize_button_) {
 499     visible_button->SetVisible(true);
 500     visible_button->SetImageAlignment(ImageButton::ALIGN_LEFT,
 501                                       ImageButton::ALIGN_BOTTOM);
 502     gfx::Size visible_button_size = visible_button->GetPreferredSize();
 503     visible_button->SetBounds(close_button_->x() - visible_button_size.width(),
 504                               caption_y, visible_button_size.width(),
 505                               visible_button_size.height());
 506     next_button_x = visible_button->x();
 507   } else {
 508     visible_button->SetVisible(false);
 509     next_button_x = close_button_->x();
 510   }
 511
 512   minimize_button_->SetVisible(true);
 513   minimize_button_->SetImageAlignment(ImageButton::ALIGN_LEFT,
 514                                       ImageButton::ALIGN_BOTTOM);
 515   gfx::Size minimize_button_size = minimize_button_->GetPreferredSize();
 516   minimize_button_->SetBounds(
 517       next_button_x - minimize_button_size.width(), caption_y,
 518       minimize_button_size.width(),
 519       minimize_button_size.height());
 520
 521   normal_part = IDR_CLOSE;
 522   hot_part = IDR_CLOSE_H;
 523   pushed_part = IDR_CLOSE_P;
 524
 525   ui::ResourceBundle& rb = ui::ResourceBundle::GetSharedInstance();
 526
 527   close_button_->SetImage(CustomButton::STATE_NORMAL,
 528                           rb.GetImageNamed(normal_part).ToImageSkia());
 529   close_button_->SetImage(CustomButton::STATE_HOVERED,
 530                           rb.GetImageNamed(hot_part).ToImageSkia());
 531   close_button_->SetImage(CustomButton::STATE_PRESSED,
 532                           rb.GetImageNamed(pushed_part).ToImageSkia());
 533 }
 534
 535 void CustomFrameView::LayoutTitleBar() {
 536   // The window title position is calculated based on the icon position, even
 537   // when there is no icon.
 538   gfx::Rect icon_bounds(IconBounds());
 539   bool show_window_icon = window_icon_ != NULL;
 540   if (show_window_icon)
 541     window_icon_->SetBoundsRect(icon_bounds);
 542
 543   if (!frame_->widget_delegate()->ShouldShowWindowTitle())
 544     return;
 545
 546   // The offset between the window left edge and the title text.
 547   int title_x = show_window_icon ? icon_bounds.right() + kTitleIconOffsetX
 548                                  : icon_bounds.x();
 549   int title_height = GetTitleFontList().GetHeight();
 550   // We bias the title position so that when the difference between the icon and
 551   // title heights is odd, the extra pixel of the title is above the vertical
 552   // midline rather than below.  This compensates for how the icon is already
 553   // biased downwards (see IconBounds()) and helps prevent descenders on the
 554   // title from overlapping the 3D edge at the bottom of the titlebar.
 555   title_bounds_.SetRect(title_x,
 556       icon_bounds.y() + ((icon_bounds.height() - title_height - 1) / 2),
 557       std::max(0, minimize_button_->x() - kTitleCaptionSpacing -
 558       title_x), title_height);
 559 }
 560
 561 void CustomFrameView::LayoutClientView() {
 562   if (!ShouldShowTitleBarAndBorder()) {
 563     client_view_bounds_ = bounds();
 564     return;
 565   }
 566
 567   int top_height = NonClientTopBorderHeight();
 568   int border_thickness = NonClientBorderThickness();
 569   client_view_bounds_.SetRect(border_thickness, top_height,
 570       std::max(0, width() - (2 * border_thickness)),
 571       std::max(0, height() - top_height - border_thickness));
 572 }
 573
 574 ImageButton* CustomFrameView::InitWindowCaptionButton(
 575     int accessibility_string_id,
 576     int normal_image_id,
 577     int hot_image_id,
 578     int pushed_image_id) {
 579   ui::ResourceBundle& rb = ui::ResourceBundle::GetSharedInstance();
 580   ImageButton* button = new ImageButton(this);
 581   button->SetAccessibleName(l10n_util::GetStringUTF16(accessibility_string_id));
 582   button->SetImage(CustomButton::STATE_NORMAL,
 583                    rb.GetImageNamed(normal_image_id).ToImageSkia());
 584   button->SetImage(CustomButton::STATE_HOVERED,
 585                    rb.GetImageNamed(hot_image_id).ToImageSkia());
 586   button->SetImage(CustomButton::STATE_PRESSED,
 587                    rb.GetImageNamed(pushed_image_id).ToImageSkia());
 588   AddChildView(button);
 589   return button;
 590 }
 591
 592 }  // namespace views