chrome/browser/ui/views/frame/browser_desktop_window_tree_host_win.cc

   1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "chrome/browser/ui/views/frame/browser_desktop_window_tree_host_win.h"
   6
   7 #include <dwmapi.h>
   8
   9 #include "chrome/browser/lifetime/application_lifetime.h"
  10 #include "chrome/browser/themes/theme_service.h"
  11 #include "chrome/browser/themes/theme_service_factory.h"
  12 #include "chrome/browser/ui/views/frame/browser_frame.h"
  13 #include "chrome/browser/ui/views/frame/browser_frame_common_win.h"
  14 #include "chrome/browser/ui/views/frame/browser_view.h"
  15 #include "chrome/browser/ui/views/frame/browser_window_property_manager_win.h"
  16 #include "chrome/browser/ui/views/frame/system_menu_insertion_delegate_win.h"
  17 #include "chrome/browser/ui/views/tabs/tab_strip.h"
  18 #include "chrome/browser/ui/views/theme_image_mapper.h"
  19 #include "grit/theme_resources.h"
  20 #include "ui/base/theme_provider.h"
  21 #include "ui/gfx/win/dpi.h"
  22 #include "ui/views/controls/menu/native_menu_win.h"
  23
  24 #pragma comment(lib, "dwmapi.lib")
  25
  26 namespace {
  27
  28 const int kClientEdgeThickness = 3;
  29 // We need to offset the DWMFrame into the toolbar so that the blackness
  30 // doesn't show up on our rounded corners.
  31 const int kDWMFrameTopOffset = 3;
  32
  33 // DesktopThemeProvider maps resource ids using MapThemeImage(). This is
  34 // necessary for BrowserDesktopWindowTreeHostWin so that it uses the windows
  35 // theme images rather than the ash theme images.
  36 class DesktopThemeProvider : public ui::ThemeProvider {
  37  public:
  38   explicit DesktopThemeProvider(ui::ThemeProvider* delegate)
  39       : delegate_(delegate) {
  40   }
  41
  42   virtual bool UsingSystemTheme() const OVERRIDE {
  43     return delegate_->UsingSystemTheme();
  44   }
  45   virtual gfx::ImageSkia* GetImageSkiaNamed(int id) const OVERRIDE {
  46     return delegate_->GetImageSkiaNamed(
  47         chrome::MapThemeImage(chrome::HOST_DESKTOP_TYPE_NATIVE, id));
  48   }
  49   virtual SkColor GetColor(int id) const OVERRIDE {
  50     return delegate_->GetColor(id);
  51   }
  52   virtual int GetDisplayProperty(int id) const OVERRIDE {
  53     return delegate_->GetDisplayProperty(id);
  54   }
  55   virtual bool ShouldUseNativeFrame() const OVERRIDE {
  56     return delegate_->ShouldUseNativeFrame();
  57   }
  58   virtual bool HasCustomImage(int id) const OVERRIDE {
  59     return delegate_->HasCustomImage(
  60         chrome::MapThemeImage(chrome::HOST_DESKTOP_TYPE_NATIVE, id));
  61   }
  62   virtual base::RefCountedMemory* GetRawData(
  63       int id,
  64       ui::ScaleFactor scale_factor) const OVERRIDE {
  65     return delegate_->GetRawData(id, scale_factor);
  66   }
  67
  68  private:
  69   ui::ThemeProvider* delegate_;
  70
  71   DISALLOW_COPY_AND_ASSIGN(DesktopThemeProvider);
  72 };
  73
  74 }  // namespace
  75
  76 ////////////////////////////////////////////////////////////////////////////////
  77 // BrowserDesktopWindowTreeHostWin, public:
  78
  79 BrowserDesktopWindowTreeHostWin::BrowserDesktopWindowTreeHostWin(
  80     views::internal::NativeWidgetDelegate* native_widget_delegate,
  81     views::DesktopNativeWidgetAura* desktop_native_widget_aura,
  82     BrowserView* browser_view,
  83     BrowserFrame* browser_frame)
  84     : DesktopWindowTreeHostWin(native_widget_delegate,
  85                                desktop_native_widget_aura),
  86       browser_view_(browser_view),
  87       browser_frame_(browser_frame),
  88       did_gdi_clear_(false) {
  89   scoped_ptr<ui::ThemeProvider> theme_provider(
  90       new DesktopThemeProvider(ThemeServiceFactory::GetForProfile(
  91                                    browser_view->browser()->profile())));
  92   browser_frame->SetThemeProvider(theme_provider.Pass());
  93 }
  94
  95 BrowserDesktopWindowTreeHostWin::~BrowserDesktopWindowTreeHostWin() {
  96 }
  97
  98 views::NativeMenuWin* BrowserDesktopWindowTreeHostWin::GetSystemMenu() {
  99   if (!system_menu_.get()) {
 100     SystemMenuInsertionDelegateWin insertion_delegate;
 101     system_menu_.reset(
 102         new views::NativeMenuWin(browser_frame_->GetSystemMenuModel(),
 103                                  GetHWND()));
 104     system_menu_->Rebuild(&insertion_delegate);
 105   }
 106   return system_menu_.get();
 107 }
 108
 109 ////////////////////////////////////////////////////////////////////////////////
 110 // BrowserDesktopWindowTreeHostWin, BrowserDesktopWindowTreeHost implementation:
 111
 112 views::DesktopWindowTreeHost*
 113     BrowserDesktopWindowTreeHostWin::AsDesktopWindowTreeHost() {
 114   return this;
 115 }
 116
 117 int BrowserDesktopWindowTreeHostWin::GetMinimizeButtonOffset() const {
 118   return minimize_button_metrics_.GetMinimizeButtonOffsetX();
 119 }
 120
 121 bool BrowserDesktopWindowTreeHostWin::UsesNativeSystemMenu() const {
 122   return true;
 123 }
 124
 125 ////////////////////////////////////////////////////////////////////////////////
 126 // BrowserDesktopWindowTreeHostWin, views::DesktopWindowTreeHostWin overrides:
 127
 128 int BrowserDesktopWindowTreeHostWin::GetInitialShowState() const {
 129   STARTUPINFO si = {0};
 130   si.cb = sizeof(si);
 131   si.dwFlags = STARTF_USESHOWWINDOW;
 132   GetStartupInfo(&si);
 133   return si.wShowWindow;
 134 }
 135
 136 bool BrowserDesktopWindowTreeHostWin::GetClientAreaInsets(
 137     gfx::Insets* insets) const {
 138   // Use the default client insets for an opaque frame or a glass popup/app
 139   // frame.
 140   if (!GetWidget()->ShouldUseNativeFrame() ||
 141       !browser_view_->IsBrowserTypeNormal()) {
 142     return false;
 143   }
 144
 145   int border_thickness =
 146       GetSystemMetrics(SM_CXSIZEFRAME) + GetSystemMetrics(SM_CXPADDEDBORDER);
 147   // In fullscreen mode, we have no frame. In restored mode, we draw our own
 148   // client edge over part of the default frame.
 149   if (GetWidget()->IsFullscreen())
 150     border_thickness = 0;
 151   else if (!IsMaximized())
 152     border_thickness -= kClientEdgeThickness;
 153   insets->Set(0, border_thickness, border_thickness, border_thickness);
 154   return true;
 155 }
 156
 157 void BrowserDesktopWindowTreeHostWin::HandleCreate() {
 158   DesktopWindowTreeHostWin::HandleCreate();
 159   browser_window_property_manager_ =
 160       BrowserWindowPropertyManager::CreateBrowserWindowPropertyManager(
 161           browser_view_);
 162   if (browser_window_property_manager_)
 163     browser_window_property_manager_->UpdateWindowProperties(GetHWND());
 164 }
 165
 166 void BrowserDesktopWindowTreeHostWin::HandleFrameChanged() {
 167   // Reinitialize the status bubble, since it needs to be initialized
 168   // differently depending on whether or not DWM composition is enabled
 169   browser_view_->InitStatusBubble();
 170
 171   // We need to update the glass region on or off before the base class adjusts
 172   // the window region.
 173   UpdateDWMFrame();
 174   DesktopWindowTreeHostWin::HandleFrameChanged();
 175 }
 176
 177 bool BrowserDesktopWindowTreeHostWin::PreHandleMSG(UINT message,
 178                                                    WPARAM w_param,
 179                                                    LPARAM l_param,
 180                                                    LRESULT* result) {
 181   switch (message) {
 182     case WM_ACTIVATE:
 183       if (LOWORD(w_param) != WA_INACTIVE)
 184         minimize_button_metrics_.OnHWNDActivated();
 185       return false;
 186     case WM_ENDSESSION:
 187       chrome::SessionEnding();
 188       return true;
 189     case WM_INITMENUPOPUP:
 190       GetSystemMenu()->UpdateStates();
 191       return true;
 192   }
 193   return DesktopWindowTreeHostWin::PreHandleMSG(
 194       message, w_param, l_param, result);
 195 }
 196
 197 void BrowserDesktopWindowTreeHostWin::PostHandleMSG(UINT message,
 198                                                     WPARAM w_param,
 199                                                     LPARAM l_param) {
 200   switch (message) {
 201   case WM_CREATE:
 202     minimize_button_metrics_.Init(GetHWND());
 203     break;
 204   case WM_WINDOWPOSCHANGED: {
 205     UpdateDWMFrame();
 206
 207     // Windows lies to us about the position of the minimize button before a
 208     // window is visible.  We use this position to place the OTR avatar in RTL
 209     // mode, so when the window is shown, we need to re-layout and schedule a
 210     // paint for the non-client frame view so that the icon top has the correct
 211     // position when the window becomes visible.  This fixes bugs where the icon
 212     // appears to overlay the minimize button.
 213     // Note that we will call Layout every time SetWindowPos is called with
 214     // SWP_SHOWWINDOW, however callers typically are careful about not
 215     // specifying this flag unless necessary to avoid flicker.
 216     // This may be invoked during creation on XP and before the non_client_view
 217     // has been created.
 218     WINDOWPOS* window_pos = reinterpret_cast<WINDOWPOS*>(l_param);
 219     if (window_pos->flags & SWP_SHOWWINDOW && GetWidget()->non_client_view()) {
 220       GetWidget()->non_client_view()->Layout();
 221       GetWidget()->non_client_view()->SchedulePaint();
 222     }
 223     break;
 224   }
 225   case WM_ERASEBKGND:
 226     if (!did_gdi_clear_ && DesktopWindowTreeHostWin::ShouldUseNativeFrame()) {
 227       // This is necessary to avoid white flashing in the titlebar area around
 228       // the minimize/maximize/close buttons.
 229       HDC dc = GetDC(GetHWND());
 230       MARGINS margins = GetDWMFrameMargins();
 231       RECT client_rect;
 232       GetClientRect(GetHWND(), &client_rect);
 233       HBRUSH brush = CreateSolidBrush(0);
 234       RECT rect = { 0, 0, client_rect.right, margins.cyTopHeight };
 235       FillRect(dc, &rect, brush);
 236       DeleteObject(brush);
 237       ReleaseDC(GetHWND(), dc);
 238       did_gdi_clear_ = true;
 239     }
 240     break;
 241   }
 242 }
 243
 244
 245 bool BrowserDesktopWindowTreeHostWin::IsUsingCustomFrame() const {
 246   // We don't theme popup or app windows, so regardless of whether or not a
 247   // theme is active for normal browser windows, we don't want to use the custom
 248   // frame for popups/apps.
 249   if (!browser_view_->IsBrowserTypeNormal() &&
 250       !DesktopWindowTreeHostWin::IsUsingCustomFrame()) {
 251     return false;
 252   }
 253
 254   // Otherwise, we use the native frame when we're told we should by the theme
 255   // provider (e.g. no custom theme is active).
 256   return !GetWidget()->GetThemeProvider()->ShouldUseNativeFrame();
 257 }
 258
 259 bool BrowserDesktopWindowTreeHostWin::ShouldUseNativeFrame() const {
 260   if (!views::DesktopWindowTreeHostWin::ShouldUseNativeFrame())
 261     return false;
 262   // This function can get called when the Browser window is closed i.e. in the
 263   // context of the BrowserView destructor.
 264   if (!browser_view_->browser())
 265     return false;
 266   return chrome::ShouldUseNativeFrame(browser_view_,
 267                                       GetWidget()->GetThemeProvider());
 268 }
 269
 270 void BrowserDesktopWindowTreeHostWin::FrameTypeChanged() {
 271   views::DesktopWindowTreeHostWin::FrameTypeChanged();
 272   did_gdi_clear_ = false;
 273 }
 274
 275 ////////////////////////////////////////////////////////////////////////////////
 276 // BrowserDesktopWindowTreeHostWin, private:
 277
 278 void BrowserDesktopWindowTreeHostWin::UpdateDWMFrame() {
 279   // For "normal" windows on Aero, we always need to reset the glass area
 280   // correctly, even if we're not currently showing the native frame (e.g.
 281   // because a theme is showing), so we explicitly check for that case rather
 282   // than checking browser_frame_->ShouldUseNativeFrame() here.  Using that here
 283   // would mean we wouldn't reset the glass area to zero when moving from the
 284   // native frame to an opaque frame, leading to graphical glitches behind the
 285   // opaque frame.  Instead, we use that function below to tell us whether the
 286   // frame is currently native or opaque.
 287   if (!GetWidget()->client_view() || !browser_view_->IsBrowserTypeNormal() ||
 288       !DesktopWindowTreeHostWin::ShouldUseNativeFrame())
 289     return;
 290
 291   MARGINS margins = GetDWMFrameMargins();
 292
 293   DwmExtendFrameIntoClientArea(GetHWND(), &margins);
 294 }
 295
 296 MARGINS BrowserDesktopWindowTreeHostWin::GetDWMFrameMargins() const {
 297   MARGINS margins = { 0 };
 298
 299   // If the opaque frame is visible, we use the default (zero) margins.
 300   // Otherwise, we need to figure out how to extend the glass in.
 301   if (GetWidget()->ShouldUseNativeFrame()) {
 302     // In fullscreen mode, we don't extend glass into the client area at all,
 303     // because the GDI-drawn text in the web content composited over it will
 304     // become semi-transparent over any glass area.
 305     if (!IsMaximized() && !GetWidget()->IsFullscreen()) {
 306       margins.cxLeftWidth = kClientEdgeThickness + 1;
 307       margins.cxRightWidth = kClientEdgeThickness + 1;
 308       margins.cyBottomHeight = kClientEdgeThickness + 1;
 309       margins.cyTopHeight = kClientEdgeThickness + 1;
 310     }
 311     // In maximized mode, we only have a titlebar strip of glass, no side/bottom
 312     // borders.
 313     if (!browser_view_->IsFullscreen()) {
 314       gfx::Rect tabstrip_bounds(
 315           browser_frame_->GetBoundsForTabStrip(browser_view_->tabstrip()));
 316       tabstrip_bounds = gfx::win::DIPToScreenRect(tabstrip_bounds);
 317       margins.cyTopHeight = tabstrip_bounds.bottom() + kDWMFrameTopOffset;
 318     }
 319   }
 320   return margins;
 321 }
 322
 323 ////////////////////////////////////////////////////////////////////////////////
 324 // BrowserDesktopWindowTreeHost, public:
 325
 326 // static
 327 BrowserDesktopWindowTreeHost*
 328     BrowserDesktopWindowTreeHost::CreateBrowserDesktopWindowTreeHost(
 329         views::internal::NativeWidgetDelegate* native_widget_delegate,
 330         views::DesktopNativeWidgetAura* desktop_native_widget_aura,
 331         BrowserView* browser_view,
 332         BrowserFrame* browser_frame) {
 333   return new BrowserDesktopWindowTreeHostWin(native_widget_delegate,
 334                                              desktop_native_widget_aura,
 335                                              browser_view,
 336                                              browser_frame);
 337 }