Home | History | Annotate | Download | only in panels 
      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/path.h"
     20 #include "ui/views/controls/button/image_button.h"
     21 #include "ui/views/controls/label.h"
     22 #include "ui/views/widget/widget.h"
     23 #include "ui/views/widget/widget_delegate.h"
     24 
     25 #if defined(OS_WIN)
     26 #include "base/win/scoped_gdi_object.h"
     27 #include "ui/base/win/shell.h"
     28 #include "ui/gfx/path_win.h"
     29 #include "ui/views/win/hwnd_util.h"
     30 #endif
     31 
     32 #if defined(USE_AURA)
     33 #include "ui/aura/window.h"
     34 #endif
     35 
     36 namespace {
     37 
     38 // The thickness of the border when Aero is not enabled. In this case, the
     39 // shadow around the window will not be painted by the system and we need to
     40 // paint a frame in order to differentiate the client area from the background.
     41 const int kNonAeroBorderThickness = 1;
     42 
     43 // The height and width in pixels of the icon.
     44 const int kIconSize = 16;
     45 
     46 // The font to use to draw the title.
     47 const char* kTitleFontName = "Arial Bold";
     48 const int kTitleFontSize = 14;
     49 
     50 // The extra padding between the button and the top edge.
     51 const int kExtraPaddingBetweenButtonAndTop = 1;
     52 
     53 // Colors used to draw titlebar background under default theme.
     54 const SkColor kActiveBackgroundDefaultColor = SkColorSetRGB(0x3a, 0x3d, 0x3d);
     55 const SkColor kInactiveBackgroundDefaultColor = SkColorSetRGB(0x7a, 0x7c, 0x7c);
     56 const SkColor kAttentionBackgroundDefaultColor =
     57     SkColorSetRGB(0x53, 0xa9, 0x3f);
     58 
     59 // Color used to draw the minimized panel.
     60 const SkColor kMinimizeBackgroundDefaultColor = SkColorSetRGB(0xf5, 0xf4, 0xf0);
     61 
     62 // Color used to draw the title text under default theme.
     63 const SkColor kTitleTextDefaultColor = SkColorSetRGB(0xf9, 0xf9, 0xf9);
     64 
     65 gfx::ImageSkia* CreateImageForColor(SkColor color) {
     66   gfx::Canvas canvas(gfx::Size(1, 1), 1.0f, true);
     67   canvas.DrawColor(color);
     68   return new gfx::ImageSkia(canvas.ExtractImageRep());
     69 }
     70 
     71 #if defined(OS_WIN)
     72 const gfx::ImageSkia& GetTopLeftCornerImage(panel::CornerStyle corner_style) {
     73   static gfx::ImageSkia* rounded_image = NULL;
     74   static gfx::ImageSkia* non_rounded_image = NULL;
     75   if (!rounded_image) {
     76     ResourceBundle& rb = ResourceBundle::GetSharedInstance();
     77     rounded_image = rb.GetImageSkiaNamed(IDR_WINDOW_TOP_LEFT_CORNER);
     78     non_rounded_image = rb.GetImageSkiaNamed(IDR_PANEL_TOP_LEFT_CORNER);
     79   }
     80   return (corner_style & panel::TOP_ROUNDED) ? *rounded_image
     81                                              : *non_rounded_image;
     82 }
     83 
     84 const gfx::ImageSkia& GetTopRightCornerImage(panel::CornerStyle corner_style) {
     85   static gfx::ImageSkia* rounded_image = NULL;
     86   static gfx::ImageSkia* non_rounded_image = NULL;
     87   if (!rounded_image) {
     88     ResourceBundle& rb = ResourceBundle::GetSharedInstance();
     89     rounded_image = rb.GetImageSkiaNamed(IDR_WINDOW_TOP_RIGHT_CORNER);
     90     non_rounded_image = rb.GetImageSkiaNamed(IDR_PANEL_TOP_RIGHT_CORNER);
     91   }
     92   return (corner_style & panel::TOP_ROUNDED) ? *rounded_image
     93                                              : *non_rounded_image;
     94 }
     95 
     96 const gfx::ImageSkia& GetBottomLeftCornerImage(
     97     panel::CornerStyle corner_style) {
     98   static gfx::ImageSkia* rounded_image = NULL;
     99   static gfx::ImageSkia* non_rounded_image = NULL;
    100   if (!rounded_image) {
    101     ResourceBundle& rb = ResourceBundle::GetSharedInstance();
    102     rounded_image = rb.GetImageSkiaNamed(IDR_WINDOW_BOTTOM_LEFT_CORNER);
    103     non_rounded_image = rb.GetImageSkiaNamed(IDR_PANEL_BOTTOM_LEFT_CORNER);
    104   }
    105   return (corner_style & panel::BOTTOM_ROUNDED) ? *rounded_image
    106                                                 : *non_rounded_image;
    107 }
    108 
    109 const gfx::ImageSkia& GetBottomRightCornerImage(
    110     panel::CornerStyle corner_style) {
    111   static gfx::ImageSkia* rounded_image = NULL;
    112   static gfx::ImageSkia* non_rounded_image = NULL;
    113   if (!rounded_image) {
    114     ResourceBundle& rb = ResourceBundle::GetSharedInstance();
    115     rounded_image = rb.GetImageSkiaNamed(IDR_WINDOW_BOTTOM_RIGHT_CORNER);
    116     non_rounded_image = rb.GetImageSkiaNamed(IDR_PANEL_BOTTOM_RIGHT_CORNER);
    117   }
    118   return (corner_style & panel::BOTTOM_ROUNDED) ? *rounded_image
    119                                                 : *non_rounded_image;
    120 }
    121 
    122 const gfx::ImageSkia& GetTopEdgeImage() {
    123   static gfx::ImageSkia* image = NULL;
    124   if (!image) {
    125     ResourceBundle& rb = ResourceBundle::GetSharedInstance();
    126     image = rb.GetImageSkiaNamed(IDR_WINDOW_TOP_CENTER);
    127   }
    128   return *image;
    129 }
    130 
    131 const gfx::ImageSkia& GetBottomEdgeImage() {
    132   static gfx::ImageSkia* image = NULL;
    133   if (!image) {
    134     ResourceBundle& rb = ResourceBundle::GetSharedInstance();
    135     image = rb.GetImageSkiaNamed(IDR_WINDOW_BOTTOM_CENTER);
    136   }
    137   return *image;
    138 }
    139 
    140 const gfx::ImageSkia& GetLeftEdgeImage() {
    141   static gfx::ImageSkia* image = NULL;
    142   if (!image) {
    143     ResourceBundle& rb = ResourceBundle::GetSharedInstance();
    144     image = rb.GetImageSkiaNamed(IDR_WINDOW_LEFT_SIDE);
    145   }
    146   return *image;
    147 }
    148 
    149 const gfx::ImageSkia& GetRightEdgeImage() {
    150   static gfx::ImageSkia* image = NULL;
    151   if (!image) {
    152     ResourceBundle& rb = ResourceBundle::GetSharedInstance();
    153     image = rb.GetImageSkiaNamed(IDR_WINDOW_RIGHT_SIDE);
    154   }
    155   return *image;
    156 }
    157 #endif  // defined(OS_WIN)
    158 
    159 const gfx::Font& GetTitleFont() {
    160   static gfx::Font* font = NULL;
    161   if (!font)
    162     font = new gfx::Font(kTitleFontName, kTitleFontSize);
    163   return *font;
    164 }
    165 
    166 const gfx::ImageSkia* GetActiveBackgroundDefaultImage() {
    167   static gfx::ImageSkia* image = NULL;
    168   if (!image)
    169     image = CreateImageForColor(kActiveBackgroundDefaultColor);
    170   return image;
    171 }
    172 
    173 const gfx::ImageSkia* GetInactiveBackgroundDefaultImage() {
    174   static gfx::ImageSkia* image = NULL;
    175   if (!image)
    176     image = CreateImageForColor(kInactiveBackgroundDefaultColor);
    177   return image;
    178 }
    179 
    180 const gfx::ImageSkia* GetAttentionBackgroundDefaultImage() {
    181   static gfx::ImageSkia* image = NULL;
    182   if (!image)
    183     image = CreateImageForColor(kAttentionBackgroundDefaultColor);
    184   return image;
    185 }
    186 
    187 const gfx::ImageSkia* GetMinimizeBackgroundDefaultImage() {
    188   static gfx::ImageSkia* image = NULL;
    189   if (!image)
    190     image = CreateImageForColor(kMinimizeBackgroundDefaultColor);
    191   return image;
    192 }
    193 
    194 int GetFrameEdgeHitTest(const gfx::Point& point,
    195                         const gfx::Size& frame_size,
    196                         int resize_area_size,
    197                         panel::Resizability resizability) {
    198   int x = point.x();
    199   int y = point.y();
    200   int width = frame_size.width();
    201   int height = frame_size.height();
    202   if (x < resize_area_size) {
    203     if (y < resize_area_size && (resizability & panel::RESIZABLE_TOP_LEFT)) {
    204       return HTTOPLEFT;
    205     } else if (y >= height - resize_area_size &&
    206               (resizability & panel::RESIZABLE_BOTTOM_LEFT)) {
    207       return HTBOTTOMLEFT;
    208     } else if (resizability & panel::RESIZABLE_LEFT) {
    209       return HTLEFT;
    210     }
    211   } else if (x >= width - resize_area_size) {
    212     if (y < resize_area_size && (resizability & panel::RESIZABLE_TOP_RIGHT)) {
    213       return HTTOPRIGHT;
    214     } else if (y >= height - resize_area_size &&
    215               (resizability & panel::RESIZABLE_BOTTOM_RIGHT)) {
    216       return HTBOTTOMRIGHT;
    217     } else if (resizability & panel::RESIZABLE_RIGHT) {
    218       return HTRIGHT;
    219     }
    220   }
    221 
    222   if (y < resize_area_size && (resizability & panel::RESIZABLE_TOP)) {
    223     return HTTOP;
    224   } else if (y >= height - resize_area_size &&
    225             (resizability & panel::RESIZABLE_BOTTOM)) {
    226     return HTBOTTOM;
    227   }
    228 
    229   return HTNOWHERE;
    230 }
    231 
    232 // Frameless is only supported when Aero is enabled and shadow effect is
    233 // present.
    234 bool ShouldRenderAsFrameless() {
    235 #if defined(OS_WIN)
    236   bool is_frameless = ui::win::IsAeroGlassEnabled();
    237   if (is_frameless) {
    238     BOOL shadow_enabled = FALSE;
    239     if (::SystemParametersInfo(SPI_GETDROPSHADOW, 0, &shadow_enabled, 0) &&
    240         !shadow_enabled)
    241       is_frameless = false;
    242   }
    243   return is_frameless;
    244 #else
    245   return false;
    246 #endif
    247 }
    248 
    249 }  // namespace
    250 
    251 // static
    252 const char PanelFrameView::kViewClassName[] = "PanelFrameView";
    253 
    254 PanelFrameView::PanelFrameView(PanelView* panel_view)
    255     : is_frameless_(ShouldRenderAsFrameless()),
    256       panel_view_(panel_view),
    257       close_button_(NULL),
    258       minimize_button_(NULL),
    259       restore_button_(NULL),
    260       title_icon_(NULL),
    261       title_label_(NULL),
    262       corner_style_(panel::ALL_ROUNDED) {
    263 }
    264 
    265 PanelFrameView::~PanelFrameView() {
    266 }
    267 
    268 void PanelFrameView::Init() {
    269   ResourceBundle& rb = ResourceBundle::GetSharedInstance();
    270 
    271   close_button_ = new views::ImageButton(this);
    272   close_button_->SetImage(views::CustomButton::STATE_NORMAL,
    273                           rb.GetImageSkiaNamed(IDR_PANEL_CLOSE));
    274   close_button_->SetImage(views::CustomButton::STATE_HOVERED,
    275                           rb.GetImageSkiaNamed(IDR_PANEL_CLOSE_H));
    276   close_button_->SetImage(views::CustomButton::STATE_PRESSED,
    277                           rb.GetImageSkiaNamed(IDR_PANEL_CLOSE_C));
    278   close_button_->SetImageAlignment(views::ImageButton::ALIGN_CENTER,
    279                                    views::ImageButton::ALIGN_MIDDLE);
    280   base::string16 tooltip_text =
    281       l10n_util::GetStringUTF16(IDS_PANEL_CLOSE_TOOLTIP);
    282   close_button_->SetTooltipText(tooltip_text);
    283   AddChildView(close_button_);
    284 
    285   minimize_button_ = new views::ImageButton(this);
    286   minimize_button_->SetImage(views::CustomButton::STATE_NORMAL,
    287                              rb.GetImageSkiaNamed(IDR_PANEL_MINIMIZE));
    288   minimize_button_->SetImage(views::CustomButton::STATE_HOVERED,
    289                              rb.GetImageSkiaNamed(IDR_PANEL_MINIMIZE_H));
    290   minimize_button_->SetImage(views::CustomButton::STATE_PRESSED,
    291                              rb.GetImageSkiaNamed(IDR_PANEL_MINIMIZE_C));
    292   tooltip_text = l10n_util::GetStringUTF16(IDS_PANEL_MINIMIZE_TOOLTIP);
    293   minimize_button_->SetTooltipText(tooltip_text);
    294   minimize_button_->SetImageAlignment(views::ImageButton::ALIGN_CENTER,
    295                                       views::ImageButton::ALIGN_MIDDLE);
    296   AddChildView(minimize_button_);
    297 
    298   restore_button_ = new views::ImageButton(this);
    299   restore_button_->SetImage(views::CustomButton::STATE_NORMAL,
    300                             rb.GetImageSkiaNamed(IDR_PANEL_RESTORE));
    301   restore_button_->SetImage(views::CustomButton::STATE_HOVERED,
    302                             rb.GetImageSkiaNamed(IDR_PANEL_RESTORE_H));
    303   restore_button_->SetImage(views::CustomButton::STATE_PRESSED,
    304                             rb.GetImageSkiaNamed(IDR_PANEL_RESTORE_C));
    305   restore_button_->SetImageAlignment(views::ImageButton::ALIGN_CENTER,
    306                                      views::ImageButton::ALIGN_MIDDLE);
    307   tooltip_text = l10n_util::GetStringUTF16(IDS_PANEL_RESTORE_TOOLTIP);
    308   restore_button_->SetTooltipText(tooltip_text);
    309   restore_button_->SetVisible(false);  // only visible when panel is minimized
    310   AddChildView(restore_button_);
    311 
    312   title_icon_ = new TabIconView(this);
    313   title_icon_->set_is_light(true);
    314   AddChildView(title_icon_);
    315   title_icon_->Update();
    316 
    317   title_label_ = new views::Label(panel_view_->panel()->GetWindowTitle());
    318   title_label_->SetHorizontalAlignment(gfx::ALIGN_LEFT);
    319   title_label_->SetAutoColorReadabilityEnabled(false);
    320   title_label_->SetFont(GetTitleFont());
    321   AddChildView(title_label_);
    322 
    323 #if defined(USE_AURA)
    324   // Compute the thickness of the client area that needs to be counted towards
    325   // mouse resizing.
    326   int thickness_for_mouse_resizing =
    327       PanelView::kResizeInsideBoundsSize - BorderThickness();
    328   aura::Window* window = panel_view_->GetNativePanelWindow();
    329   window->set_hit_test_bounds_override_inner(
    330       gfx::Insets(thickness_for_mouse_resizing, thickness_for_mouse_resizing,
    331                   thickness_for_mouse_resizing, thickness_for_mouse_resizing));
    332 #endif
    333 }
    334 
    335 void PanelFrameView::UpdateTitle() {
    336   UpdateWindowTitle();
    337 }
    338 
    339 void PanelFrameView::UpdateIcon() {
    340   UpdateWindowIcon();
    341 }
    342 
    343 void PanelFrameView::UpdateThrobber() {
    344   title_icon_->Update();
    345 }
    346 
    347 void PanelFrameView::UpdateTitlebarMinimizeRestoreButtonVisibility() {
    348   Panel* panel = panel_view_->panel();
    349   minimize_button_->SetVisible(panel->CanShowMinimizeButton());
    350   restore_button_->SetVisible(panel->CanShowRestoreButton());
    351 
    352   // Reset the button states in case that the hover states are not cleared when
    353   // mouse is clicked but not moved.
    354   minimize_button_->SetState(views::CustomButton::STATE_NORMAL);
    355   restore_button_->SetState(views::CustomButton::STATE_NORMAL);
    356 }
    357 
    358 void PanelFrameView::SetWindowCornerStyle(panel::CornerStyle corner_style) {
    359   corner_style_ = corner_style;
    360 
    361 #if defined(OS_WIN)
    362   // Changing the window region is going to force a paint. Only change the
    363   // window region if the region really differs.
    364   HWND native_window = views::HWNDForWidget(panel_view_->window());
    365   base::win::ScopedRegion current_region(::CreateRectRgn(0, 0, 0, 0));
    366   int current_region_result = ::GetWindowRgn(native_window, current_region);
    367 
    368   gfx::Path window_mask;
    369   GetWindowMask(size(), &window_mask);
    370   base::win::ScopedRegion new_region(gfx::CreateHRGNFromSkPath(window_mask));
    371 
    372   if (current_region_result == ERROR ||
    373       !::EqualRgn(current_region, new_region)) {
    374     // SetWindowRgn takes ownership of the new_region.
    375     ::SetWindowRgn(native_window, new_region.release(), TRUE);
    376   }
    377 #endif
    378 }
    379 
    380 gfx::Rect PanelFrameView::GetBoundsForClientView() const {
    381   // The origin of client-area bounds starts after left border and titlebar and
    382   // spans until hitting the right and bottom borders.
    383   //    +------------------------------+
    384   //    |         Top Titlebar         |
    385   //    |-+--------------------------+-|
    386   //    |L|                          |R|
    387   //    |e|                          |i|
    388   //    |f|                          |g|
    389   //    |t|                          |h|
    390   //    | |         Client           |t|
    391   //    | |                          | |
    392   //    |B|          Area            |B|
    393   //    |o|                          |o|
    394   //    |r|                          |r|
    395   //    |d|                          |d|
    396   //    |e|                          |e|
    397   //    |r|                          |r|
    398   //    | +--------------------------+ |
    399   //    |        Bottom Border         |
    400   //    +------------------------------+
    401   int titlebar_height = TitlebarHeight();
    402   int border_thickness = BorderThickness();
    403   return gfx::Rect(border_thickness,
    404                    titlebar_height,
    405                    std::max(0, width() - border_thickness * 2),
    406                    std::max(0, height() - titlebar_height - border_thickness));
    407 }
    408 
    409 gfx::Rect PanelFrameView::GetWindowBoundsForClientBounds(
    410       const gfx::Rect& client_bounds) const {
    411   int titlebar_height = TitlebarHeight();
    412   int border_thickness = BorderThickness();
    413   // The window bounds include both client area and non-client area (titlebar
    414   // and left, right and bottom borders).
    415   return gfx::Rect(client_bounds.x() - border_thickness,
    416                    client_bounds.y() - titlebar_height,
    417                    client_bounds.width() + border_thickness * 2,
    418                    client_bounds.height() + titlebar_height + border_thickness);
    419 }
    420 
    421 int PanelFrameView::NonClientHitTest(const gfx::Point& point) {
    422   panel::Resizability resizability = panel_view_->panel()->CanResizeByMouse();
    423 
    424   // Check the frame first, as we allow a small area overlapping the contents
    425   // to be used for resize handles.
    426   int frame_component = GetFrameEdgeHitTest(
    427       point, size(), PanelView::kResizeInsideBoundsSize, resizability);
    428 
    429   if (frame_component != HTNOWHERE)
    430     return frame_component;
    431 
    432   int client_component =
    433       panel_view_->window()->client_view()->NonClientHitTest(point);
    434   if (client_component != HTNOWHERE)
    435     return client_component;
    436 
    437   if (close_button_ && close_button_->visible() &&
    438       close_button_->GetMirroredBounds().Contains(point))
    439     return HTCLOSE;
    440 
    441   if (minimize_button_ && minimize_button_->visible() &&
    442       minimize_button_->GetMirroredBounds().Contains(point))
    443     return HTMINBUTTON;
    444 
    445   if (restore_button_ && restore_button_->visible() &&
    446       restore_button_->GetMirroredBounds().Contains(point))
    447     return HTMAXBUTTON;
    448 
    449   return HTNOWHERE;
    450 }
    451 
    452 void PanelFrameView::GetWindowMask(const gfx::Size& size,
    453                                    gfx::Path* window_mask) {
    454   int width = size.width();
    455   int height = size.height();
    456 
    457   if (corner_style_ & panel::TOP_ROUNDED) {
    458     window_mask->moveTo(0, 3);
    459     window_mask->lineTo(1, 2);
    460     window_mask->lineTo(1, 1);
    461     window_mask->lineTo(2, 1);
    462     window_mask->lineTo(3, 0);
    463     window_mask->lineTo(SkIntToScalar(width - 3), 0);
    464     window_mask->lineTo(SkIntToScalar(width - 2), 1);
    465     window_mask->lineTo(SkIntToScalar(width - 1), 1);
    466     window_mask->lineTo(SkIntToScalar(width - 1), 2);
    467     window_mask->lineTo(SkIntToScalar(width - 1), 3);
    468   } else {
    469     window_mask->moveTo(0, 0);
    470     window_mask->lineTo(width, 0);
    471   }
    472 
    473   if (corner_style_ & panel::BOTTOM_ROUNDED) {
    474     window_mask->lineTo(SkIntToScalar(width - 1), SkIntToScalar(height - 4));
    475     window_mask->lineTo(SkIntToScalar(width - 2), SkIntToScalar(height - 3));
    476     window_mask->lineTo(SkIntToScalar(width - 2), SkIntToScalar(height - 2));
    477     window_mask->lineTo(SkIntToScalar(width - 3), SkIntToScalar(height - 2));
    478     window_mask->lineTo(SkIntToScalar(width - 4), SkIntToScalar(height - 1));
    479     window_mask->lineTo(3, SkIntToScalar(height - 1));
    480     window_mask->lineTo(2, SkIntToScalar(height - 2));
    481     window_mask->lineTo(1, SkIntToScalar(height - 2));
    482     window_mask->lineTo(1, SkIntToScalar(height - 3));
    483     window_mask->lineTo(0, SkIntToScalar(height - 4));
    484   } else {
    485     window_mask->lineTo(SkIntToScalar(width), SkIntToScalar(height));
    486     window_mask->lineTo(0, SkIntToScalar(height));
    487   }
    488 
    489   window_mask->close();
    490 }
    491 
    492 void PanelFrameView::ResetWindowControls() {
    493   // The controls aren't affected by this constraint.
    494 }
    495 
    496 void PanelFrameView::UpdateWindowIcon() {
    497   title_icon_->SchedulePaint();
    498 }
    499 
    500 void PanelFrameView::UpdateWindowTitle() {
    501   title_label_->SetText(panel_view_->panel()->GetWindowTitle());
    502 }
    503 
    504 gfx::Size PanelFrameView::GetPreferredSize() {
    505   gfx::Size pref_size =
    506       panel_view_->window()->client_view()->GetPreferredSize();
    507   gfx::Rect bounds(0, 0, pref_size.width(), pref_size.height());
    508   return panel_view_->window()->non_client_view()->
    509       GetWindowBoundsForClientBounds(bounds).size();
    510 }
    511 
    512 const char* PanelFrameView::GetClassName() const {
    513   return kViewClassName;
    514 }
    515 
    516 gfx::Size PanelFrameView::GetMinimumSize() {
    517   return panel_view_->GetMinimumSize();
    518 }
    519 
    520 gfx::Size PanelFrameView::GetMaximumSize() {
    521   return panel_view_->GetMaximumSize();
    522 }
    523 
    524 void PanelFrameView::Layout() {
    525   is_frameless_ = ShouldRenderAsFrameless();
    526 
    527   // Layout the close button.
    528   int right = width();
    529   close_button_->SetBounds(
    530       width() - panel::kTitlebarRightPadding - panel::kPanelButtonSize,
    531       (TitlebarHeight() - panel::kPanelButtonSize) / 2 +
    532           kExtraPaddingBetweenButtonAndTop,
    533       panel::kPanelButtonSize,
    534       panel::kPanelButtonSize);
    535   right = close_button_->x();
    536 
    537   // Layout the minimize and restore button. Both occupy the same space,
    538   // but at most one is visible at any time.
    539   minimize_button_->SetBounds(
    540       right - panel::kButtonPadding - panel::kPanelButtonSize,
    541       (TitlebarHeight() - panel::kPanelButtonSize) / 2 +
    542           kExtraPaddingBetweenButtonAndTop,
    543       panel::kPanelButtonSize,
    544       panel::kPanelButtonSize);
    545   restore_button_->SetBoundsRect(minimize_button_->bounds());
    546   right = minimize_button_->x();
    547 
    548   // Layout the icon.
    549   int icon_y = (TitlebarHeight() - kIconSize) / 2;
    550   title_icon_->SetBounds(
    551       panel::kTitlebarLeftPadding,
    552       icon_y,
    553       kIconSize,
    554       kIconSize);
    555 
    556   // Layout the title.
    557   int title_x = title_icon_->bounds().right() + panel::kIconAndTitlePadding;
    558   int title_height = GetTitleFont().GetHeight();
    559   title_label_->SetBounds(
    560       title_x,
    561       icon_y + ((kIconSize - title_height - 1) / 2),
    562       std::max(0, right - panel::kTitleAndButtonPadding - title_x),
    563       title_height);
    564 }
    565 
    566 void PanelFrameView::OnPaint(gfx::Canvas* canvas) {
    567   UpdateControlStyles(GetPaintState());
    568   PaintFrameBackground(canvas);
    569   PaintFrameEdge(canvas);
    570 }
    571 
    572 bool PanelFrameView::OnMousePressed(const ui::MouseEvent& event) {
    573   if (event.IsOnlyLeftMouseButton()) {
    574     // |event.location| is in the view's coordinate system. Convert it to the
    575     // screen coordinate system.
    576     gfx::Point mouse_location = event.location();
    577     views::View::ConvertPointToScreen(this, &mouse_location);
    578 
    579     // If the mouse location falls within the resizing area of the titlebar,
    580     // do not handle the event so that the system resizing logic could kick in.
    581     if (!panel_view_->IsWithinResizingArea(mouse_location) &&
    582         panel_view_->OnTitlebarMousePressed(mouse_location))
    583       return true;
    584   }
    585   return NonClientFrameView::OnMousePressed(event);
    586 }
    587 
    588 bool PanelFrameView::OnMouseDragged(const ui::MouseEvent& event) {
    589   // |event.location| is in the view's coordinate system. Convert it to the
    590   // screen coordinate system.
    591   gfx::Point mouse_location = event.location();
    592   views::View::ConvertPointToScreen(this, &mouse_location);
    593 
    594   if (panel_view_->OnTitlebarMouseDragged(mouse_location))
    595     return true;
    596   return NonClientFrameView::OnMouseDragged(event);
    597 }
    598 
    599 void PanelFrameView::OnMouseReleased(const ui::MouseEvent& event) {
    600   if (panel_view_->OnTitlebarMouseReleased(
    601           event.IsControlDown() ? panel::APPLY_TO_ALL : panel::NO_MODIFIER))
    602     return;
    603   NonClientFrameView::OnMouseReleased(event);
    604 }
    605 
    606 void PanelFrameView::OnMouseCaptureLost() {
    607   if (panel_view_->OnTitlebarMouseCaptureLost())
    608     return;
    609   NonClientFrameView::OnMouseCaptureLost();
    610 }
    611 
    612 void PanelFrameView::ButtonPressed(views::Button* sender,
    613                                    const ui::Event& event) {
    614   if (sender == close_button_) {
    615     panel_view_->ClosePanel();
    616   } else {
    617     panel::ClickModifier modifier =
    618         event.IsControlDown() ? panel::APPLY_TO_ALL : panel::NO_MODIFIER;
    619     if (sender == minimize_button_)
    620       panel_view_->panel()->OnMinimizeButtonClicked(modifier);
    621     else if (sender == restore_button_)
    622       panel_view_->panel()->OnRestoreButtonClicked(modifier);
    623   }
    624 }
    625 
    626 bool PanelFrameView::ShouldTabIconViewAnimate() const {
    627   // This function is queried during the creation of the window as the
    628   // TabIconView we host is initialized, so we need to NULL check the selected
    629   // WebContents because in this condition there is not yet a selected tab.
    630   content::WebContents* contents = panel_view_->panel()->GetWebContents();
    631   return contents ? contents->IsLoading() : false;
    632 }
    633 
    634 gfx::ImageSkia PanelFrameView::GetFaviconForTabIconView() {
    635   return panel_view_->window()->widget_delegate()->GetWindowIcon();
    636 }
    637 
    638 gfx::Size PanelFrameView::NonClientAreaSize() const {
    639   if (is_frameless_)
    640     return gfx::Size(0, TitlebarHeight());
    641   // When the frame is present, the width of non-client area consists of
    642   // left and right borders, while the height consists of the top area
    643   // (titlebar) and the bottom border.
    644   return gfx::Size(2 * kNonAeroBorderThickness,
    645                    TitlebarHeight() + kNonAeroBorderThickness);
    646 }
    647 
    648 int PanelFrameView::TitlebarHeight() const {
    649   return panel::kTitlebarHeight;
    650 }
    651 
    652 int PanelFrameView::BorderThickness() const {
    653   return is_frameless_ ? 0 : kNonAeroBorderThickness;
    654 }
    655 
    656 PanelFrameView::PaintState PanelFrameView::GetPaintState() const {
    657   if (panel_view_->panel()->IsDrawingAttention())
    658     return PAINT_FOR_ATTENTION;
    659   if (bounds().height() <= panel::kMinimizedPanelHeight)
    660     return PAINT_AS_MINIMIZED;
    661   if (panel_view_->IsPanelActive() &&
    662            !panel_view_->force_to_paint_as_inactive())
    663     return PAINT_AS_ACTIVE;
    664   return PAINT_AS_INACTIVE;
    665 }
    666 
    667 SkColor PanelFrameView::GetTitleColor(PaintState paint_state) const {
    668   return kTitleTextDefaultColor;
    669 }
    670 
    671 const gfx::ImageSkia* PanelFrameView::GetFrameBackground(
    672     PaintState paint_state) const {
    673   switch (paint_state) {
    674     case PAINT_AS_INACTIVE:
    675       return GetInactiveBackgroundDefaultImage();
    676     case PAINT_AS_ACTIVE:
    677       return GetActiveBackgroundDefaultImage();
    678     case PAINT_AS_MINIMIZED:
    679       return GetMinimizeBackgroundDefaultImage();
    680     case PAINT_FOR_ATTENTION:
    681       return GetAttentionBackgroundDefaultImage();
    682     default:
    683       NOTREACHED();
    684       return GetInactiveBackgroundDefaultImage();
    685   }
    686 }
    687 
    688 void PanelFrameView::UpdateControlStyles(PaintState paint_state) {
    689   title_label_->SetEnabledColor(GetTitleColor(paint_state));
    690 }
    691 
    692 void PanelFrameView::PaintFrameBackground(gfx::Canvas* canvas) {
    693   // We only need to paint the title-bar since no resizing border is shown.
    694   // Instead, we allow part of the inner content area be used to trigger the
    695   // mouse resizing.
    696   int titlebar_height = TitlebarHeight();
    697   const gfx::ImageSkia* image = GetFrameBackground(GetPaintState());
    698   canvas->TileImageInt(*image, 0, 0, width(), titlebar_height);
    699 
    700   if (is_frameless_)
    701     return;
    702 
    703   // Left border, below title-bar.
    704   canvas->TileImageInt(*image, 0, titlebar_height, kNonAeroBorderThickness,
    705       height() - titlebar_height);
    706 
    707   // Right border, below title-bar.
    708   canvas->TileImageInt(*image, width() - kNonAeroBorderThickness,
    709       titlebar_height, kNonAeroBorderThickness, height() - titlebar_height);
    710 
    711   // Bottom border.
    712   canvas->TileImageInt(*image, 0, height() - kNonAeroBorderThickness, width(),
    713       kNonAeroBorderThickness);
    714 }
    715 
    716 void PanelFrameView::PaintFrameEdge(gfx::Canvas* canvas) {
    717 #if defined(OS_WIN)
    718   // Border is not needed when panel is not shown as minimized.
    719   if (GetPaintState() != PAINT_AS_MINIMIZED)
    720     return;
    721 
    722   const gfx::ImageSkia& top_left_image = GetTopLeftCornerImage(corner_style_);
    723   const gfx::ImageSkia& top_right_image = GetTopRightCornerImage(corner_style_);
    724   const gfx::ImageSkia& bottom_left_image =
    725       GetBottomLeftCornerImage(corner_style_);
    726   const gfx::ImageSkia& bottom_right_image =
    727       GetBottomRightCornerImage(corner_style_);
    728   const gfx::ImageSkia& top_image = GetTopEdgeImage();
    729   const gfx::ImageSkia& bottom_image = GetBottomEdgeImage();
    730   const gfx::ImageSkia& left_image = GetLeftEdgeImage();
    731   const gfx::ImageSkia& right_image = GetRightEdgeImage();
    732 
    733   // Draw the top border.
    734   canvas->DrawImageInt(top_left_image, 0, 0);
    735   canvas->TileImageInt(top_image,
    736                        top_left_image.width(),
    737                        0,
    738                        width() - top_right_image.width(),
    739                        top_image.height());
    740   canvas->DrawImageInt(top_right_image, width() - top_right_image.width(), 0);
    741 
    742   // Draw the right border.
    743   canvas->TileImageInt(right_image,
    744                        width() - right_image.width(),
    745                        top_right_image.height(),
    746                        right_image.width(),
    747                        height() - top_right_image.height() -
    748                            bottom_right_image.height());
    749 
    750   // Draw the bottom border.
    751   canvas->DrawImageInt(bottom_right_image,
    752                        width() - bottom_right_image.width(),
    753                        height() - bottom_right_image.height());
    754   canvas->TileImageInt(bottom_image,
    755                        bottom_left_image.width(),
    756                        height() - bottom_image.height(),
    757                        width() - bottom_left_image.width() -
    758                            bottom_right_image.width(),
    759                        bottom_image.height());
    760   canvas->DrawImageInt(bottom_left_image,
    761                        0,
    762                        height() - bottom_left_image.height());
    763 
    764   // Draw the left border.
    765   canvas->TileImageInt(left_image,
    766                        0,
    767                        top_left_image.height(),
    768                        left_image.width(),
    769                        height() - top_left_image.height() -
    770                            bottom_left_image.height());
    771 #endif
    772 }
    773