src/chrome/browser/ui/views/panels/panel_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/panels/panel_frame_view.h"
   6
   7 #include "chrome/browser/ui/panels/panel.h"
   8 #include "chrome/browser/ui/panels/panel_constants.h"
   9 #include "chrome/browser/ui/views/panels/panel_view.h"
  10 #include "chrome/browser/ui/views/tab_icon_view.h"
  11 #include "content/public/browser/web_contents.h"
  12 #include "grit/generated_resources.h"
  13 #include "grit/theme_resources.h"
  14 #include "grit/ui_resources.h"
  15 #include "ui/aura/window.h"
  16 #include "ui/base/hit_test.h"
  17 #include "ui/base/l10n/l10n_util.h"
  18 #include "ui/base/resource/resource_bundle.h"
  19 #include "ui/gfx/canvas.h"
  20 #include "ui/gfx/font_list.h"
  21 #include "ui/gfx/path.h"
  22 #include "ui/gfx/screen.h"
  23 #include "ui/views/controls/button/image_button.h"
  24 #include "ui/views/controls/label.h"
  25 #include "ui/views/widget/widget.h"
  26 #include "ui/views/widget/widget_delegate.h"
  27
  28 #if defined(OS_WIN)
  29 #include "base/win/scoped_gdi_object.h"
  30 #include "ui/base/win/shell.h"
  31 #include "ui/gfx/path_win.h"
  32 #include "ui/views/win/hwnd_util.h"
  33 #endif
  34
  35 namespace {
  36
  37 // The thickness of the border when Aero is not enabled. In this case, the
  38 // shadow around the window will not be painted by the system and we need to
  39 // paint a frame in order to differentiate the client area from the background.
  40 const int kNonAeroBorderThickness = 1;
  41
  42 // The height and width in pixels of the icon.
  43 const int kIconSize = 16;
  44
  45 // The extra padding between the button and the top edge.
  46 const int kExtraPaddingBetweenButtonAndTop = 1;
  47
  48 // Colors used to draw titlebar background under default theme.
  49 const SkColor kActiveBackgroundDefaultColor = SkColorSetRGB(0x3a, 0x3d, 0x3d);
  50 const SkColor kInactiveBackgroundDefaultColor = SkColorSetRGB(0x7a, 0x7c, 0x7c);
  51 const SkColor kAttentionBackgroundDefaultColor =
  52     SkColorSetRGB(0x53, 0xa9, 0x3f);
  53
  54 // Color used to draw the minimized panel.
  55 const SkColor kMinimizeBackgroundDefaultColor = SkColorSetRGB(0xf5, 0xf4, 0xf0);
  56
  57 // Color used to draw the title text under default theme.
  58 const SkColor kTitleTextDefaultColor = SkColorSetRGB(0xf9, 0xf9, 0xf9);
  59
  60 gfx::ImageSkia* CreateImageForColor(SkColor color) {
  61   gfx::Canvas canvas(gfx::Size(1, 1), 1.0f, true);
  62   canvas.DrawColor(color);
  63   return new gfx::ImageSkia(canvas.ExtractImageRep());
  64 }
  65
  66 #if defined(OS_WIN)
  67 const gfx::ImageSkia& GetTopLeftCornerImage(panel::CornerStyle corner_style) {
  68   static gfx::ImageSkia* rounded_image = NULL;
  69   static gfx::ImageSkia* non_rounded_image = NULL;
  70   if (!rounded_image) {
  71     ui::ResourceBundle& rb = ui::ResourceBundle::GetSharedInstance();
  72     rounded_image = rb.GetImageSkiaNamed(IDR_WINDOW_TOP_LEFT_CORNER);
  73     non_rounded_image = rb.GetImageSkiaNamed(IDR_PANEL_TOP_LEFT_CORNER);
  74   }
  75   return (corner_style & panel::TOP_ROUNDED) ? *rounded_image
  76                                              : *non_rounded_image;
  77 }
  78
  79 const gfx::ImageSkia& GetTopRightCornerImage(panel::CornerStyle corner_style) {
  80   static gfx::ImageSkia* rounded_image = NULL;
  81   static gfx::ImageSkia* non_rounded_image = NULL;
  82   if (!rounded_image) {
  83     ui::ResourceBundle& rb = ui::ResourceBundle::GetSharedInstance();
  84     rounded_image = rb.GetImageSkiaNamed(IDR_WINDOW_TOP_RIGHT_CORNER);
  85     non_rounded_image = rb.GetImageSkiaNamed(IDR_PANEL_TOP_RIGHT_CORNER);
  86   }
  87   return (corner_style & panel::TOP_ROUNDED) ? *rounded_image
  88                                              : *non_rounded_image;
  89 }
  90
  91 const gfx::ImageSkia& GetBottomLeftCornerImage(
  92     panel::CornerStyle corner_style) {
  93   static gfx::ImageSkia* rounded_image = NULL;
  94   static gfx::ImageSkia* non_rounded_image = NULL;
  95   if (!rounded_image) {
  96     ui::ResourceBundle& rb = ui::ResourceBundle::GetSharedInstance();
  97     rounded_image = rb.GetImageSkiaNamed(IDR_WINDOW_BOTTOM_LEFT_CORNER);
  98     non_rounded_image = rb.GetImageSkiaNamed(IDR_PANEL_BOTTOM_LEFT_CORNER);
  99   }
 100   return (corner_style & panel::BOTTOM_ROUNDED) ? *rounded_image
 101                                                 : *non_rounded_image;
 102 }
 103
 104 const gfx::ImageSkia& GetBottomRightCornerImage(
 105     panel::CornerStyle corner_style) {
 106   static gfx::ImageSkia* rounded_image = NULL;
 107   static gfx::ImageSkia* non_rounded_image = NULL;
 108   if (!rounded_image) {
 109     ui::ResourceBundle& rb = ui::ResourceBundle::GetSharedInstance();
 110     rounded_image = rb.GetImageSkiaNamed(IDR_WINDOW_BOTTOM_RIGHT_CORNER);
 111     non_rounded_image = rb.GetImageSkiaNamed(IDR_PANEL_BOTTOM_RIGHT_CORNER);
 112   }
 113   return (corner_style & panel::BOTTOM_ROUNDED) ? *rounded_image
 114                                                 : *non_rounded_image;
 115 }
 116
 117 const gfx::ImageSkia& GetTopEdgeImage() {
 118   static gfx::ImageSkia* image = NULL;
 119   if (!image) {
 120     ui::ResourceBundle& rb = ui::ResourceBundle::GetSharedInstance();
 121     image = rb.GetImageSkiaNamed(IDR_WINDOW_TOP_CENTER);
 122   }
 123   return *image;
 124 }
 125
 126 const gfx::ImageSkia& GetBottomEdgeImage() {
 127   static gfx::ImageSkia* image = NULL;
 128   if (!image) {
 129     ui::ResourceBundle& rb = ui::ResourceBundle::GetSharedInstance();
 130     image = rb.GetImageSkiaNamed(IDR_WINDOW_BOTTOM_CENTER);
 131   }
 132   return *image;
 133 }
 134
 135 const gfx::ImageSkia& GetLeftEdgeImage() {
 136   static gfx::ImageSkia* image = NULL;
 137   if (!image) {
 138     ui::ResourceBundle& rb = ui::ResourceBundle::GetSharedInstance();
 139     image = rb.GetImageSkiaNamed(IDR_WINDOW_LEFT_SIDE);
 140   }
 141   return *image;
 142 }
 143
 144 const gfx::ImageSkia& GetRightEdgeImage() {
 145   static gfx::ImageSkia* image = NULL;
 146   if (!image) {
 147     ui::ResourceBundle& rb = ui::ResourceBundle::GetSharedInstance();
 148     image = rb.GetImageSkiaNamed(IDR_WINDOW_RIGHT_SIDE);
 149   }
 150   return *image;
 151 }
 152 #endif  // defined(OS_WIN)
 153
 154 const gfx::ImageSkia* GetActiveBackgroundDefaultImage() {
 155   static gfx::ImageSkia* image = NULL;
 156   if (!image)
 157     image = CreateImageForColor(kActiveBackgroundDefaultColor);
 158   return image;
 159 }
 160
 161 const gfx::ImageSkia* GetInactiveBackgroundDefaultImage() {
 162   static gfx::ImageSkia* image = NULL;
 163   if (!image)
 164     image = CreateImageForColor(kInactiveBackgroundDefaultColor);
 165   return image;
 166 }
 167
 168 const gfx::ImageSkia* GetAttentionBackgroundDefaultImage() {
 169   static gfx::ImageSkia* image = NULL;
 170   if (!image)
 171     image = CreateImageForColor(kAttentionBackgroundDefaultColor);
 172   return image;
 173 }
 174
 175 const gfx::ImageSkia* GetMinimizeBackgroundDefaultImage() {
 176   static gfx::ImageSkia* image = NULL;
 177   if (!image)
 178     image = CreateImageForColor(kMinimizeBackgroundDefaultColor);
 179   return image;
 180 }
 181
 182 int GetFrameEdgeHitTest(const gfx::Point& point,
 183                         const gfx::Size& frame_size,
 184                         int resize_area_size,
 185                         panel::Resizability resizability) {
 186   int x = point.x();
 187   int y = point.y();
 188   int width = frame_size.width();
 189   int height = frame_size.height();
 190   if (x < resize_area_size) {
 191     if (y < resize_area_size && (resizability & panel::RESIZABLE_TOP_LEFT)) {
 192       return HTTOPLEFT;
 193     } else if (y >= height - resize_area_size &&
 194               (resizability & panel::RESIZABLE_BOTTOM_LEFT)) {
 195       return HTBOTTOMLEFT;
 196     } else if (resizability & panel::RESIZABLE_LEFT) {
 197       return HTLEFT;
 198     }
 199   } else if (x >= width - resize_area_size) {
 200     if (y < resize_area_size && (resizability & panel::RESIZABLE_TOP_RIGHT)) {
 201       return HTTOPRIGHT;
 202     } else if (y >= height - resize_area_size &&
 203               (resizability & panel::RESIZABLE_BOTTOM_RIGHT)) {
 204       return HTBOTTOMRIGHT;
 205     } else if (resizability & panel::RESIZABLE_RIGHT) {
 206       return HTRIGHT;
 207     }
 208   }
 209
 210   if (y < resize_area_size && (resizability & panel::RESIZABLE_TOP)) {
 211     return HTTOP;
 212   } else if (y >= height - resize_area_size &&
 213             (resizability & panel::RESIZABLE_BOTTOM)) {
 214     return HTBOTTOM;
 215   }
 216
 217   return HTNOWHERE;
 218 }
 219
 220 // Frameless is only supported when Aero is enabled and shadow effect is
 221 // present.
 222 bool ShouldRenderAsFrameless() {
 223 #if defined(OS_WIN)
 224   bool is_frameless = ui::win::IsAeroGlassEnabled();
 225   if (is_frameless) {
 226     BOOL shadow_enabled = FALSE;
 227     if (::SystemParametersInfo(SPI_GETDROPSHADOW, 0, &shadow_enabled, 0) &&
 228         !shadow_enabled)
 229       is_frameless = false;
 230   }
 231   return is_frameless;
 232 #else
 233   return false;
 234 #endif
 235 }
 236
 237 }  // namespace
 238
 239 // static
 240 const char PanelFrameView::kViewClassName[] = "PanelFrameView";
 241
 242 PanelFrameView::PanelFrameView(PanelView* panel_view)
 243     : is_frameless_(ShouldRenderAsFrameless()),
 244       panel_view_(panel_view),
 245       close_button_(NULL),
 246       minimize_button_(NULL),
 247       restore_button_(NULL),
 248       title_icon_(NULL),
 249       title_label_(NULL),
 250       corner_style_(panel::ALL_ROUNDED) {
 251 }
 252
 253 PanelFrameView::~PanelFrameView() {
 254 }
 255
 256 void PanelFrameView::Init() {
 257   ui::ResourceBundle& rb = ui::ResourceBundle::GetSharedInstance();
 258
 259   close_button_ = new views::ImageButton(this);
 260   close_button_->SetImage(views::CustomButton::STATE_NORMAL,
 261                           rb.GetImageSkiaNamed(IDR_PANEL_CLOSE));
 262   close_button_->SetImage(views::CustomButton::STATE_HOVERED,
 263                           rb.GetImageSkiaNamed(IDR_PANEL_CLOSE_H));
 264   close_button_->SetImage(views::CustomButton::STATE_PRESSED,
 265                           rb.GetImageSkiaNamed(IDR_PANEL_CLOSE_C));
 266   close_button_->SetImageAlignment(views::ImageButton::ALIGN_CENTER,
 267                                    views::ImageButton::ALIGN_MIDDLE);
 268   base::string16 tooltip_text =
 269       l10n_util::GetStringUTF16(IDS_PANEL_CLOSE_TOOLTIP);
 270   close_button_->SetTooltipText(tooltip_text);
 271   AddChildView(close_button_);
 272
 273   minimize_button_ = new views::ImageButton(this);
 274   minimize_button_->SetImage(views::CustomButton::STATE_NORMAL,
 275                              rb.GetImageSkiaNamed(IDR_PANEL_MINIMIZE));
 276   minimize_button_->SetImage(views::CustomButton::STATE_HOVERED,
 277                              rb.GetImageSkiaNamed(IDR_PANEL_MINIMIZE_H));
 278   minimize_button_->SetImage(views::CustomButton::STATE_PRESSED,
 279                              rb.GetImageSkiaNamed(IDR_PANEL_MINIMIZE_C));
 280   tooltip_text = l10n_util::GetStringUTF16(IDS_PANEL_MINIMIZE_TOOLTIP);
 281   minimize_button_->SetTooltipText(tooltip_text);
 282   minimize_button_->SetImageAlignment(views::ImageButton::ALIGN_CENTER,
 283                                       views::ImageButton::ALIGN_MIDDLE);
 284   AddChildView(minimize_button_);
 285
 286   restore_button_ = new views::ImageButton(this);
 287   restore_button_->SetImage(views::CustomButton::STATE_NORMAL,
 288                             rb.GetImageSkiaNamed(IDR_PANEL_RESTORE));
 289   restore_button_->SetImage(views::CustomButton::STATE_HOVERED,
 290                             rb.GetImageSkiaNamed(IDR_PANEL_RESTORE_H));
 291   restore_button_->SetImage(views::CustomButton::STATE_PRESSED,
 292                             rb.GetImageSkiaNamed(IDR_PANEL_RESTORE_C));
 293   restore_button_->SetImageAlignment(views::ImageButton::ALIGN_CENTER,
 294                                      views::ImageButton::ALIGN_MIDDLE);
 295   tooltip_text = l10n_util::GetStringUTF16(IDS_PANEL_RESTORE_TOOLTIP);
 296   restore_button_->SetTooltipText(tooltip_text);
 297   restore_button_->SetVisible(false);  // only visible when panel is minimized
 298   AddChildView(restore_button_);
 299
 300   title_icon_ = new TabIconView(this, NULL);
 301   title_icon_->set_is_light(true);
 302   AddChildView(title_icon_);
 303   title_icon_->Update();
 304
 305   title_label_ = new views::Label(
 306       panel_view_->panel()->GetWindowTitle(),
 307       rb.GetFontList(ui::ResourceBundle::BoldFont));
 308   title_label_->SetHorizontalAlignment(gfx::ALIGN_LEFT);
 309   title_label_->SetAutoColorReadabilityEnabled(false);
 310   AddChildView(title_label_);
 311
 312   // Compute the thickness of the client area that needs to be counted towards
 313   // mouse resizing.
 314   // TODO(tdanderson): Remove this if possible (crbug.com/344924).
 315   int thickness_for_mouse_resizing =
 316       PanelView::kResizeInsideBoundsSize - BorderThickness();
 317   aura::Window* window = panel_view_->GetNativePanelWindow();
 318   window->set_hit_test_bounds_override_inner(
 319       gfx::Insets(thickness_for_mouse_resizing, thickness_for_mouse_resizing,
 320                   thickness_for_mouse_resizing, thickness_for_mouse_resizing));
 321 }
 322
 323 void PanelFrameView::UpdateTitle() {
 324   UpdateWindowTitle();
 325 }
 326
 327 void PanelFrameView::UpdateIcon() {
 328   UpdateWindowIcon();
 329 }
 330
 331 void PanelFrameView::UpdateThrobber() {
 332   title_icon_->Update();
 333 }
 334
 335 void PanelFrameView::UpdateTitlebarMinimizeRestoreButtonVisibility() {
 336   Panel* panel = panel_view_->panel();
 337   minimize_button_->SetVisible(panel->CanShowMinimizeButton());
 338   restore_button_->SetVisible(panel->CanShowRestoreButton());
 339
 340   // Reset the button states in case that the hover states are not cleared when
 341   // mouse is clicked but not moved.
 342   minimize_button_->SetState(views::CustomButton::STATE_NORMAL);
 343   restore_button_->SetState(views::CustomButton::STATE_NORMAL);
 344 }
 345
 346 void PanelFrameView::SetWindowCornerStyle(panel::CornerStyle corner_style) {
 347   corner_style_ = corner_style;
 348
 349 #if defined(OS_WIN)
 350   // Changing the window region is going to force a paint. Only change the
 351   // window region if the region really differs.
 352   HWND native_window = views::HWNDForWidget(panel_view_->window());
 353   base::win::ScopedRegion current_region(::CreateRectRgn(0, 0, 0, 0));
 354   int current_region_result = ::GetWindowRgn(native_window, current_region);
 355
 356   gfx::Path window_mask;
 357   GetWindowMask(size(), &window_mask);
 358   base::win::ScopedRegion new_region(gfx::CreateHRGNFromSkPath(window_mask));
 359
 360   if (current_region_result == ERROR ||
 361       !::EqualRgn(current_region, new_region)) {
 362     // SetWindowRgn takes ownership of the new_region.
 363     ::SetWindowRgn(native_window, new_region.release(), TRUE);
 364   }
 365 #endif
 366 }
 367
 368 gfx::Rect PanelFrameView::GetBoundsForClientView() const {
 369   // The origin of client-area bounds starts after left border and titlebar and
 370   // spans until hitting the right and bottom borders.
 371   //    +------------------------------+
 372   //    |         Top Titlebar         |
 373   //    |-+--------------------------+-|
 374   //    |L|                          |R|
 375   //    |e|                          |i|
 376   //    |f|                          |g|
 377   //    |t|                          |h|
 378   //    | |         Client           |t|
 379   //    | |                          | |
 380   //    |B|          Area            |B|
 381   //    |o|                          |o|
 382   //    |r|                          |r|
 383   //    |d|                          |d|
 384   //    |e|                          |e|
 385   //    |r|                          |r|
 386   //    | +--------------------------+ |
 387   //    |        Bottom Border         |
 388   //    +------------------------------+
 389   int titlebar_height = TitlebarHeight();
 390   int border_thickness = BorderThickness();
 391   return gfx::Rect(border_thickness,
 392                    titlebar_height,
 393                    std::max(0, width() - border_thickness * 2),
 394                    std::max(0, height() - titlebar_height - border_thickness));
 395 }
 396
 397 gfx::Rect PanelFrameView::GetWindowBoundsForClientBounds(
 398       const gfx::Rect& client_bounds) const {
 399   int titlebar_height = TitlebarHeight();
 400   int border_thickness = BorderThickness();
 401   // The window bounds include both client area and non-client area (titlebar
 402   // and left, right and bottom borders).
 403   return gfx::Rect(client_bounds.x() - border_thickness,
 404                    client_bounds.y() - titlebar_height,
 405                    client_bounds.width() + border_thickness * 2,
 406                    client_bounds.height() + titlebar_height + border_thickness);
 407 }
 408
 409 int PanelFrameView::NonClientHitTest(const gfx::Point& point) {
 410   panel::Resizability resizability = panel_view_->panel()->CanResizeByMouse();
 411
 412   // Check the frame first, as we allow a small area overlapping the contents
 413   // to be used for resize handles.
 414   int frame_component = GetFrameEdgeHitTest(
 415       point, size(), PanelView::kResizeInsideBoundsSize, resizability);
 416
 417   if (frame_component != HTNOWHERE)
 418     return frame_component;
 419
 420   int client_component =
 421       panel_view_->window()->client_view()->NonClientHitTest(point);
 422   if (client_component != HTNOWHERE)
 423     return client_component;
 424
 425   if (close_button_ && close_button_->visible() &&
 426       close_button_->GetMirroredBounds().Contains(point))
 427     return HTCLOSE;
 428
 429   if (minimize_button_ && minimize_button_->visible() &&
 430       minimize_button_->GetMirroredBounds().Contains(point))
 431     return HTMINBUTTON;
 432
 433   if (restore_button_ && restore_button_->visible() &&
 434       restore_button_->GetMirroredBounds().Contains(point))
 435     return HTMAXBUTTON;
 436
 437   return HTNOWHERE;
 438 }
 439
 440 void PanelFrameView::GetWindowMask(const gfx::Size& size,
 441                                    gfx::Path* window_mask) {
 442   int width = size.width();
 443   int height = size.height();
 444
 445   if (corner_style_ & panel::TOP_ROUNDED) {
 446     window_mask->moveTo(0, 3);
 447     window_mask->lineTo(1, 2);
 448     window_mask->lineTo(1, 1);
 449     window_mask->lineTo(2, 1);
 450     window_mask->lineTo(3, 0);
 451     window_mask->lineTo(SkIntToScalar(width - 3), 0);
 452     window_mask->lineTo(SkIntToScalar(width - 2), 1);
 453     window_mask->lineTo(SkIntToScalar(width - 1), 1);
 454     window_mask->lineTo(SkIntToScalar(width - 1), 2);
 455     window_mask->lineTo(SkIntToScalar(width - 1), 3);
 456   } else {
 457     window_mask->moveTo(0, 0);
 458     window_mask->lineTo(width, 0);
 459   }
 460
 461   if (corner_style_ & panel::BOTTOM_ROUNDED) {
 462     window_mask->lineTo(SkIntToScalar(width - 1), SkIntToScalar(height - 4));
 463     window_mask->lineTo(SkIntToScalar(width - 2), SkIntToScalar(height - 3));
 464     window_mask->lineTo(SkIntToScalar(width - 2), SkIntToScalar(height - 2));
 465     window_mask->lineTo(SkIntToScalar(width - 3), SkIntToScalar(height - 2));
 466     window_mask->lineTo(SkIntToScalar(width - 4), SkIntToScalar(height - 1));
 467     window_mask->lineTo(3, SkIntToScalar(height - 1));
 468     window_mask->lineTo(2, SkIntToScalar(height - 2));
 469     window_mask->lineTo(1, SkIntToScalar(height - 2));
 470     window_mask->lineTo(1, SkIntToScalar(height - 3));
 471     window_mask->lineTo(0, SkIntToScalar(height - 4));
 472   } else {
 473     window_mask->lineTo(SkIntToScalar(width), SkIntToScalar(height));
 474     window_mask->lineTo(0, SkIntToScalar(height));
 475   }
 476
 477   window_mask->close();
 478 }
 479
 480 void PanelFrameView::ResetWindowControls() {
 481   // The controls aren't affected by this constraint.
 482 }
 483
 484 void PanelFrameView::UpdateWindowIcon() {
 485   title_icon_->SchedulePaint();
 486 }
 487
 488 void PanelFrameView::UpdateWindowTitle() {
 489   title_label_->SetText(panel_view_->panel()->GetWindowTitle());
 490 }
 491
 492 gfx::Size PanelFrameView::GetPreferredSize() {
 493   gfx::Size pref_size =
 494       panel_view_->window()->client_view()->GetPreferredSize();
 495   gfx::Rect bounds(0, 0, pref_size.width(), pref_size.height());
 496   return panel_view_->window()->non_client_view()->
 497       GetWindowBoundsForClientBounds(bounds).size();
 498 }
 499
 500 const char* PanelFrameView::GetClassName() const {
 501   return kViewClassName;
 502 }
 503
 504 gfx::Size PanelFrameView::GetMinimumSize() {
 505   return panel_view_->GetMinimumSize();
 506 }
 507
 508 gfx::Size PanelFrameView::GetMaximumSize() {
 509   return panel_view_->GetMaximumSize();
 510 }
 511
 512 void PanelFrameView::Layout() {
 513   is_frameless_ = ShouldRenderAsFrameless();
 514
 515   // Layout the close button.
 516   int right = width();
 517   close_button_->SetBounds(
 518       width() - panel::kTitlebarRightPadding - panel::kPanelButtonSize,
 519       (TitlebarHeight() - panel::kPanelButtonSize) / 2 +
 520           kExtraPaddingBetweenButtonAndTop,
 521       panel::kPanelButtonSize,
 522       panel::kPanelButtonSize);
 523   right = close_button_->x();
 524
 525   // Layout the minimize and restore button. Both occupy the same space,
 526   // but at most one is visible at any time.
 527   minimize_button_->SetBounds(
 528       right - panel::kButtonPadding - panel::kPanelButtonSize,
 529       (TitlebarHeight() - panel::kPanelButtonSize) / 2 +
 530           kExtraPaddingBetweenButtonAndTop,
 531       panel::kPanelButtonSize,
 532       panel::kPanelButtonSize);
 533   restore_button_->SetBoundsRect(minimize_button_->bounds());
 534   right = minimize_button_->x();
 535
 536   // Layout the icon.
 537   int icon_y = (TitlebarHeight() - kIconSize) / 2;
 538   title_icon_->SetBounds(
 539       panel::kTitlebarLeftPadding,
 540       icon_y,
 541       kIconSize,
 542       kIconSize);
 543
 544   // Layout the title.
 545   int title_x = title_icon_->bounds().right() + panel::kIconAndTitlePadding;
 546   int title_height = title_label_->font_list().GetHeight();
 547   title_label_->SetBounds(
 548       title_x,
 549       icon_y + ((kIconSize - title_height - 1) / 2),
 550       std::max(0, right - panel::kTitleAndButtonPadding - title_x),
 551       title_height);
 552 }
 553
 554 void PanelFrameView::OnPaint(gfx::Canvas* canvas) {
 555   UpdateControlStyles(GetPaintState());
 556   PaintFrameBackground(canvas);
 557   PaintFrameEdge(canvas);
 558 }
 559
 560 bool PanelFrameView::OnMousePressed(const ui::MouseEvent& event) {
 561   if (event.IsOnlyLeftMouseButton()) {
 562     // |event.location| is in the view's coordinate system. Convert it to the
 563     // screen coordinate system.
 564     gfx::Point mouse_location = event.location();
 565     views::View::ConvertPointToScreen(this, &mouse_location);
 566
 567     // If the mouse location falls within the resizing area of the titlebar,
 568     // do not handle the event so that the system resizing logic could kick in.
 569     if (!panel_view_->IsWithinResizingArea(mouse_location) &&
 570         panel_view_->OnTitlebarMousePressed(mouse_location))
 571       return true;
 572   }
 573   return NonClientFrameView::OnMousePressed(event);
 574 }
 575
 576 bool PanelFrameView::OnMouseDragged(const ui::MouseEvent& event) {
 577 #if defined(OS_LINUX) && !defined(OS_CHROMEOS)
 578   // Converting the mouse location to screen coordinates returns an incorrect
 579   // location while the panel is moving. See crbug.com/353393 for more details.
 580   // TODO(pkotwicz): Fix conversion to screen coordinates
 581   gfx::Screen* screen = gfx::Screen::GetNativeScreen();
 582   gfx::Point mouse_location = screen->GetCursorScreenPoint();
 583 #else
 584   // |event.location| is in the view's coordinate system. Convert it to the
 585   // screen coordinate system.
 586   gfx::Point mouse_location = event.location();
 587   views::View::ConvertPointToScreen(this, &mouse_location);
 588 #endif
 589
 590   if (panel_view_->OnTitlebarMouseDragged(mouse_location))
 591     return true;
 592   return NonClientFrameView::OnMouseDragged(event);
 593 }
 594
 595 void PanelFrameView::OnMouseReleased(const ui::MouseEvent& event) {
 596   if (panel_view_->OnTitlebarMouseReleased(
 597           event.IsControlDown() ? panel::APPLY_TO_ALL : panel::NO_MODIFIER))
 598     return;
 599   NonClientFrameView::OnMouseReleased(event);
 600 }
 601
 602 void PanelFrameView::OnMouseCaptureLost() {
 603   if (panel_view_->OnTitlebarMouseCaptureLost())
 604     return;
 605   NonClientFrameView::OnMouseCaptureLost();
 606 }
 607
 608 void PanelFrameView::ButtonPressed(views::Button* sender,
 609                                    const ui::Event& event) {
 610   if (sender == close_button_) {
 611     panel_view_->ClosePanel();
 612   } else {
 613     panel::ClickModifier modifier =
 614         event.IsControlDown() ? panel::APPLY_TO_ALL : panel::NO_MODIFIER;
 615     if (sender == minimize_button_)
 616       panel_view_->panel()->OnMinimizeButtonClicked(modifier);
 617     else if (sender == restore_button_)
 618       panel_view_->panel()->OnRestoreButtonClicked(modifier);
 619   }
 620 }
 621
 622 bool PanelFrameView::ShouldTabIconViewAnimate() const {
 623   // This function is queried during the creation of the window as the
 624   // TabIconView we host is initialized, so we need to NULL check the selected
 625   // WebContents because in this condition there is not yet a selected tab.
 626   content::WebContents* contents = panel_view_->panel()->GetWebContents();
 627   return contents ? contents->IsLoading() : false;
 628 }
 629
 630 gfx::ImageSkia PanelFrameView::GetFaviconForTabIconView() {
 631   return panel_view_->window()->widget_delegate()->GetWindowIcon();
 632 }
 633
 634 gfx::Size PanelFrameView::NonClientAreaSize() const {
 635   if (is_frameless_)
 636     return gfx::Size(0, TitlebarHeight());
 637   // When the frame is present, the width of non-client area consists of
 638   // left and right borders, while the height consists of the top area
 639   // (titlebar) and the bottom border.
 640   return gfx::Size(2 * kNonAeroBorderThickness,
 641                    TitlebarHeight() + kNonAeroBorderThickness);
 642 }
 643
 644 int PanelFrameView::TitlebarHeight() const {
 645   return panel::kTitlebarHeight;
 646 }
 647
 648 int PanelFrameView::BorderThickness() const {
 649   return is_frameless_ ? 0 : kNonAeroBorderThickness;
 650 }
 651
 652 PanelFrameView::PaintState PanelFrameView::GetPaintState() const {
 653   if (panel_view_->panel()->IsDrawingAttention())
 654     return PAINT_FOR_ATTENTION;
 655   if (bounds().height() <= panel::kMinimizedPanelHeight)
 656     return PAINT_AS_MINIMIZED;
 657   if (panel_view_->IsPanelActive() &&
 658            !panel_view_->force_to_paint_as_inactive())
 659     return PAINT_AS_ACTIVE;
 660   return PAINT_AS_INACTIVE;
 661 }
 662
 663 SkColor PanelFrameView::GetTitleColor(PaintState paint_state) const {
 664   return kTitleTextDefaultColor;
 665 }
 666
 667 const gfx::ImageSkia* PanelFrameView::GetFrameBackground(
 668     PaintState paint_state) const {
 669   switch (paint_state) {
 670     case PAINT_AS_INACTIVE:
 671       return GetInactiveBackgroundDefaultImage();
 672     case PAINT_AS_ACTIVE:
 673       return GetActiveBackgroundDefaultImage();
 674     case PAINT_AS_MINIMIZED:
 675       return GetMinimizeBackgroundDefaultImage();
 676     case PAINT_FOR_ATTENTION:
 677       return GetAttentionBackgroundDefaultImage();
 678     default:
 679       NOTREACHED();
 680       return GetInactiveBackgroundDefaultImage();
 681   }
 682 }
 683
 684 void PanelFrameView::UpdateControlStyles(PaintState paint_state) {
 685   title_label_->SetEnabledColor(GetTitleColor(paint_state));
 686 }
 687
 688 void PanelFrameView::PaintFrameBackground(gfx::Canvas* canvas) {
 689   // We only need to paint the title-bar since no resizing border is shown.
 690   // Instead, we allow part of the inner content area be used to trigger the
 691   // mouse resizing.
 692   int titlebar_height = TitlebarHeight();
 693   const gfx::ImageSkia* image = GetFrameBackground(GetPaintState());
 694   canvas->TileImageInt(*image, 0, 0, width(), titlebar_height);
 695
 696   if (is_frameless_)
 697     return;
 698
 699   // Left border, below title-bar.
 700   canvas->TileImageInt(*image, 0, titlebar_height, kNonAeroBorderThickness,
 701       height() - titlebar_height);
 702
 703   // Right border, below title-bar.
 704   canvas->TileImageInt(*image, width() - kNonAeroBorderThickness,
 705       titlebar_height, kNonAeroBorderThickness, height() - titlebar_height);
 706
 707   // Bottom border.
 708   canvas->TileImageInt(*image, 0, height() - kNonAeroBorderThickness, width(),
 709       kNonAeroBorderThickness);
 710 }
 711
 712 void PanelFrameView::PaintFrameEdge(gfx::Canvas* canvas) {
 713 #if defined(OS_WIN)
 714   // Border is not needed when panel is not shown as minimized.
 715   if (GetPaintState() != PAINT_AS_MINIMIZED)
 716     return;
 717
 718   const gfx::ImageSkia& top_left_image = GetTopLeftCornerImage(corner_style_);
 719   const gfx::ImageSkia& top_right_image = GetTopRightCornerImage(corner_style_);
 720   const gfx::ImageSkia& bottom_left_image =
 721       GetBottomLeftCornerImage(corner_style_);
 722   const gfx::ImageSkia& bottom_right_image =
 723       GetBottomRightCornerImage(corner_style_);
 724   const gfx::ImageSkia& top_image = GetTopEdgeImage();
 725   const gfx::ImageSkia& bottom_image = GetBottomEdgeImage();
 726   const gfx::ImageSkia& left_image = GetLeftEdgeImage();
 727   const gfx::ImageSkia& right_image = GetRightEdgeImage();
 728
 729   // Draw the top border.
 730   canvas->DrawImageInt(top_left_image, 0, 0);
 731   canvas->TileImageInt(top_image,
 732                        top_left_image.width(),
 733                        0,
 734                        width() - top_right_image.width(),
 735                        top_image.height());
 736   canvas->DrawImageInt(top_right_image, width() - top_right_image.width(), 0);
 737
 738   // Draw the right border.
 739   canvas->TileImageInt(right_image,
 740                        width() - right_image.width(),
 741                        top_right_image.height(),
 742                        right_image.width(),
 743                        height() - top_right_image.height() -
 744                            bottom_right_image.height());
 745
 746   // Draw the bottom border.
 747   canvas->DrawImageInt(bottom_right_image,
 748                        width() - bottom_right_image.width(),
 749                        height() - bottom_right_image.height());
 750   canvas->TileImageInt(bottom_image,
 751                        bottom_left_image.width(),
 752                        height() - bottom_image.height(),
 753                        width() - bottom_left_image.width() -
 754                            bottom_right_image.width(),
 755                        bottom_image.height());
 756   canvas->DrawImageInt(bottom_left_image,
 757                        0,
 758                        height() - bottom_left_image.height());
 759
 760   // Draw the left border.
 761   canvas->TileImageInt(left_image,
 762                        0,
 763                        top_left_image.height(),
 764                        left_image.width(),
 765                        height() - top_left_image.height() -
 766                            bottom_left_image.height());
 767 #endif
 768 }