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 UsingNativeTheme() const OVERRIDE {
  43     return delegate_->UsingNativeTheme();
  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   }
  63   virtual base::RefCountedMemory* GetRawData(
  64       int id,
  65       ui::ScaleFactor scale_factor) const OVERRIDE {
  66     return delegate_->GetRawData(id, scale_factor);
  67   }
  68
  69  private:
  70   ui::ThemeProvider* delegate_;
  71
  72   DISALLOW_COPY_AND_ASSIGN(DesktopThemeProvider);
  73 };
  74
  75 }  // namespace
  76
  77 ////////////////////////////////////////////////////////////////////////////////
  78 // BrowserDesktopWindowTreeHostWin, public:
  79
  80 BrowserDesktopWindowTreeHostWin::BrowserDesktopWindowTreeHostWin(
  81     views::internal::NativeWidgetDelegate* native_widget_delegate,
  82     views::DesktopNativeWidgetAura* desktop_native_widget_aura,
  83     BrowserView* browser_view,
  84     BrowserFrame* browser_frame)
  85     : DesktopWindowTreeHostWin(native_widget_delegate,
  86                                desktop_native_widget_aura),
  87       browser_view_(browser_view),
  88       browser_frame_(browser_frame),
  89       did_gdi_clear_(false) {
  90   scoped_ptr<ui::ThemeProvider> theme_provider(
  91       new DesktopThemeProvider(ThemeServiceFactory::GetForProfile(
  92                                    browser_view->browser()->profile())));
  93   browser_frame->SetThemeProvider(theme_provider.Pass());
  94 }
  95
  96 BrowserDesktopWindowTreeHostWin::~BrowserDesktopWindowTreeHostWin() {
  97 }
  98
  99 views::NativeMenuWin* BrowserDesktopWindowTreeHostWin::GetSystemMenu() {
 100   if (!system_menu_.get()) {
 101     SystemMenuInsertionDelegateWin insertion_delegate;
 102     system_menu_.reset(
 103         new views::NativeMenuWin(browser_frame_->GetSystemMenuModel(),
 104                                  GetHWND()));
 105     system_menu_->Rebuild(&insertion_delegate);
 106   }
 107   return system_menu_.get();
 108 }
 109
 110 ////////////////////////////////////////////////////////////////////////////////
 111 // BrowserDesktopWindowTreeHostWin, BrowserDesktopWindowTreeHost implementation:
 112
 113 views::DesktopWindowTreeHost*
 114     BrowserDesktopWindowTreeHostWin::AsDesktopWindowTreeHost() {
 115   return this;
 116 }
 117
 118 int BrowserDesktopWindowTreeHostWin::GetMinimizeButtonOffset() const {
 119   return minimize_button_metrics_.GetMinimizeButtonOffsetX();
 120 }
 121
 122 bool BrowserDesktopWindowTreeHostWin::UsesNativeSystemMenu() const {
 123   return true;
 124 }
 125
 126 ////////////////////////////////////////////////////////////////////////////////
 127 // BrowserDesktopWindowTreeHostWin, views::DesktopWindowTreeHostWin overrides:
 128
 129 int BrowserDesktopWindowTreeHostWin::GetInitialShowState() const {
 130   STARTUPINFO si = {0};
 131   si.cb = sizeof(si);
 132   si.dwFlags = STARTF_USESHOWWINDOW;
 133   GetStartupInfo(&si);
 134   return si.wShowWindow;
 135 }
 136
 137 bool BrowserDesktopWindowTreeHostWin::GetClientAreaInsets(
 138     gfx::Insets* insets) const {
 139   // Use the default client insets for an opaque frame or a glass popup/app
 140   // frame.
 141   if (!GetWidget()->ShouldUseNativeFrame() ||
 142       !browser_view_->IsBrowserTypeNormal()) {
 143     return false;
 144   }
 145
 146   int border_thickness =
 147       GetSystemMetrics(SM_CXSIZEFRAME) + GetSystemMetrics(SM_CXPADDEDBORDER);
 148   // In fullscreen mode, we have no frame. In restored mode, we draw our own
 149   // client edge over part of the default frame.
 150   if (GetWidget()->IsFullscreen())
 151     border_thickness = 0;
 152   else if (!IsMaximized())
 153     border_thickness -= kClientEdgeThickness;
 154   insets->Set(0, border_thickness, border_thickness, border_thickness);
 155   return true;
 156 }
 157
 158 void BrowserDesktopWindowTreeHostWin::HandleCreate() {
 159   DesktopWindowTreeHostWin::HandleCreate();
 160   browser_window_property_manager_ =
 161       BrowserWindowPropertyManager::CreateBrowserWindowPropertyManager(
 162           browser_view_);
 163   if (browser_window_property_manager_)
 164     browser_window_property_manager_->UpdateWindowProperties(GetHWND());
 165 }
 166
 167 void BrowserDesktopWindowTreeHostWin::HandleFrameChanged() {
 168   // Reinitialize the status bubble, since it needs to be initialized
 169   // differently depending on whether or not DWM composition is enabled
 170   browser_view_->InitStatusBubble();
 171
 172   // We need to update the glass region on or off before the base class adjusts
 173   // the window region.
 174   UpdateDWMFrame();
 175   DesktopWindowTreeHostWin::HandleFrameChanged();
 176 }
 177
 178 bool BrowserDesktopWindowTreeHostWin::PreHandleMSG(UINT message,
 179                                                    WPARAM w_param,
 180                                                    LPARAM l_param,
 181                                                    LRESULT* result) {
 182   switch (message) {
 183     case WM_ACTIVATE:
 184       if (LOWORD(w_param) != WA_INACTIVE)
 185         minimize_button_metrics_.OnHWNDActivated();
 186       return false;
 187     case WM_ENDSESSION:
 188       chrome::SessionEnding();
 189       return true;
 190     case WM_INITMENUPOPUP:
 191       GetSystemMenu()->UpdateStates();
 192       return true;
 193   }
 194   return DesktopWindowTreeHostWin::PreHandleMSG(
 195       message, w_param, l_param, result);
 196 }
 197
 198 void BrowserDesktopWindowTreeHostWin::PostHandleMSG(UINT message,
 199                                                     WPARAM w_param,
 200                                                     LPARAM l_param) {
 201   switch (message) {
 202   case WM_CREATE:
 203     minimize_button_metrics_.Init(GetHWND());
 204     break;
 205   case WM_WINDOWPOSCHANGED: {
 206     UpdateDWMFrame();
 207
 208     // Windows lies to us about the position of the minimize button before a
 209     // window is visible.  We use this position to place the OTR avatar in RTL
 210     // mode, so when the window is shown, we need to re-layout and schedule a
 211     // paint for the non-client frame view so that the icon top has the correct
 212     // position when the window becomes visible.  This fixes bugs where the icon
 213     // appears to overlay the minimize button.
 214     // Note that we will call Layout every time SetWindowPos is called with
 215     // SWP_SHOWWINDOW, however callers typically are careful about not
 216     // specifying this flag unless necessary to avoid flicker.
 217     // This may be invoked during creation on XP and before the non_client_view
 218     // has been created.
 219     WINDOWPOS* window_pos = reinterpret_cast<WINDOWPOS*>(l_param);
 220     if (window_pos->flags & SWP_SHOWWINDOW && GetWidget()->non_client_view()) {
 221       GetWidget()->non_client_view()->Layout();
 222       GetWidget()->non_client_view()->SchedulePaint();
 223     }
 224     break;
 225   }
 226   case WM_ERASEBKGND:
 227     if (!did_gdi_clear_ && DesktopWindowTreeHostWin::ShouldUseNativeFrame()) {
 228       // This is necessary to avoid white flashing in the titlebar area around
 229       // the minimize/maximize/close buttons.
 230       HDC dc = GetDC(GetHWND());
 231       MARGINS margins = GetDWMFrameMargins();
 232       RECT client_rect;
 233       GetClientRect(GetHWND(), &client_rect);
 234       HBRUSH brush = CreateSolidBrush(0);
 235       RECT rect = { 0, 0, client_rect.right, margins.cyTopHeight };
 236       FillRect(dc, &rect, brush);
 237       DeleteObject(brush);
 238       ReleaseDC(GetHWND(), dc);
 239       did_gdi_clear_ = true;
 240     }
 241     break;
 242   }
 243 }
 244
 245
 246 bool BrowserDesktopWindowTreeHostWin::IsUsingCustomFrame() const {
 247   // We don't theme popup or app windows, so regardless of whether or not a
 248   // theme is active for normal browser windows, we don't want to use the custom
 249   // frame for popups/apps.
 250   if (!browser_view_->IsBrowserTypeNormal() &&
 251       !DesktopWindowTreeHostWin::IsUsingCustomFrame()) {
 252     return false;
 253   }
 254
 255   // Otherwise, we use the native frame when we're told we should by the theme
 256   // provider (e.g. no custom theme is active).
 257   return !GetWidget()->GetThemeProvider()->ShouldUseNativeFrame();
 258 }
 259
 260 bool BrowserDesktopWindowTreeHostWin::ShouldUseNativeFrame() const {
 261   if (!views::DesktopWindowTreeHostWin::ShouldUseNativeFrame())
 262     return false;
 263   // This function can get called when the Browser window is closed i.e. in the
 264   // context of the BrowserView destructor.
 265   if (!browser_view_->browser())
 266     return false;
 267   return chrome::ShouldUseNativeFrame(browser_view_,
 268                                       GetWidget()->GetThemeProvider());
 269 }
 270
 271 void BrowserDesktopWindowTreeHostWin::FrameTypeChanged() {
 272   views::DesktopWindowTreeHostWin::FrameTypeChanged();
 273   did_gdi_clear_ = false;
 274 }
 275
 276 ////////////////////////////////////////////////////////////////////////////////
 277 // BrowserDesktopWindowTreeHostWin, private:
 278
 279 void BrowserDesktopWindowTreeHostWin::UpdateDWMFrame() {
 280   // For "normal" windows on Aero, we always need to reset the glass area
 281   // correctly, even if we're not currently showing the native frame (e.g.
 282   // because a theme is showing), so we explicitly check for that case rather
 283   // than checking browser_frame_->ShouldUseNativeFrame() here.  Using that here
 284   // would mean we wouldn't reset the glass area to zero when moving from the
 285   // native frame to an opaque frame, leading to graphical glitches behind the
 286   // opaque frame.  Instead, we use that function below to tell us whether the
 287   // frame is currently native or opaque.
 288   if (!GetWidget()->client_view() || !browser_view_->IsBrowserTypeNormal() ||
 289       !DesktopWindowTreeHostWin::ShouldUseNativeFrame())
 290     return;
 291
 292   MARGINS margins = GetDWMFrameMargins();
 293
 294   DwmExtendFrameIntoClientArea(GetHWND(), &margins);
 295 }
 296
 297 MARGINS BrowserDesktopWindowTreeHostWin::GetDWMFrameMargins() const {
 298   MARGINS margins = { 0 };
 299
 300   // If the opaque frame is visible, we use the default (zero) margins.
 301   // Otherwise, we need to figure out how to extend the glass in.
 302   if (GetWidget()->ShouldUseNativeFrame()) {
 303     // In fullscreen mode, we don't extend glass into the client area at all,
 304     // because the GDI-drawn text in the web content composited over it will
 305     // become semi-transparent over any glass area.
 306     if (!IsMaximized() && !GetWidget()->IsFullscreen()) {
 307       margins.cxLeftWidth = kClientEdgeThickness + 1;
 308       margins.cxRightWidth = kClientEdgeThickness + 1;
 309       margins.cyBottomHeight = kClientEdgeThickness + 1;
 310       margins.cyTopHeight = kClientEdgeThickness + 1;
 311     }
 312     // In maximized mode, we only have a titlebar strip of glass, no side/bottom
 313     // borders.
 314     if (!browser_view_->IsFullscreen()) {
 315       gfx::Rect tabstrip_bounds(
 316           browser_frame_->GetBoundsForTabStrip(browser_view_->tabstrip()));
 317       tabstrip_bounds = gfx::win::DIPToScreenRect(tabstrip_bounds);
 318       margins.cyTopHeight = tabstrip_bounds.bottom() + kDWMFrameTopOffset;
 319     }
 320   }
 321   return margins;
 322 }
 323
 324 ////////////////////////////////////////////////////////////////////////////////
 325 // BrowserDesktopWindowTreeHost, public:
 326
 327 // static
 328 BrowserDesktopWindowTreeHost*
 329     BrowserDesktopWindowTreeHost::CreateBrowserDesktopWindowTreeHost(
 330         views::internal::NativeWidgetDelegate* native_widget_delegate,
 331         views::DesktopNativeWidgetAura* desktop_native_widget_aura,
 332         BrowserView* browser_view,
 333         BrowserFrame* browser_frame) {
 334   return new BrowserDesktopWindowTreeHostWin(native_widget_delegate,
 335                                              desktop_native_widget_aura,
 336                                              browser_view,
 337                                              browser_frame);
 338 }