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