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