src/ui/views/widget/desktop_aura/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 "ui/views/widget/desktop_aura/desktop_window_tree_host_win.h"
   6
   7 #include "base/win/metro.h"
   8 #include "third_party/skia/include/core/SkPath.h"
   9 #include "third_party/skia/include/core/SkRegion.h"
  10 #include "ui/aura/client/aura_constants.h"
  11 #include "ui/aura/client/cursor_client.h"
  12 #include "ui/aura/client/focus_client.h"
  13 #include "ui/aura/window_event_dispatcher.h"
  14 #include "ui/aura/window_property.h"
  15 #include "ui/base/cursor/cursor_loader_win.h"
  16 #include "ui/base/ime/input_method.h"
  17 #include "ui/base/win/shell.h"
  18 #include "ui/compositor/compositor_constants.h"
  19 #include "ui/gfx/insets.h"
  20 #include "ui/gfx/native_widget_types.h"
  21 #include "ui/gfx/path.h"
  22 #include "ui/gfx/path_win.h"
  23 #include "ui/gfx/vector2d.h"
  24 #include "ui/gfx/win/dpi.h"
  25 #include "ui/native_theme/native_theme_aura.h"
  26 #include "ui/native_theme/native_theme_win.h"
  27 #include "ui/views/corewm/tooltip_win.h"
  28 #include "ui/views/ime/input_method_bridge.h"
  29 #include "ui/views/widget/desktop_aura/desktop_cursor_loader_updater.h"
  30 #include "ui/views/widget/desktop_aura/desktop_drag_drop_client_win.h"
  31 #include "ui/views/widget/desktop_aura/desktop_native_cursor_manager.h"
  32 #include "ui/views/widget/desktop_aura/desktop_native_widget_aura.h"
  33 #include "ui/views/widget/root_view.h"
  34 #include "ui/views/widget/widget_delegate.h"
  35 #include "ui/views/widget/widget_hwnd_utils.h"
  36 #include "ui/views/win/fullscreen_handler.h"
  37 #include "ui/views/win/hwnd_message_handler.h"
  38 #include "ui/wm/core/compound_event_filter.h"
  39 #include "ui/wm/core/input_method_event_filter.h"
  40 #include "ui/wm/core/window_animations.h"
  41 #include "ui/wm/public/scoped_tooltip_disabler.h"
  42
  43 namespace views {
  44
  45 namespace {
  46
  47 gfx::Size GetExpandedWindowSize(DWORD window_style, gfx::Size size) {
  48   if (!(window_style & WS_EX_COMPOSITED) || !ui::win::IsAeroGlassEnabled())
  49     return size;
  50
  51   // Some AMD drivers can't display windows that are less than 64x64 pixels,
  52   // so expand them to be at least that size. http://crbug.com/286609
  53   gfx::Size expanded(std::max(size.width(), 64), std::max(size.height(), 64));
  54   return expanded;
  55 }
  56
  57 void InsetBottomRight(gfx::Rect* rect, gfx::Vector2d vector) {
  58   rect->Inset(0, 0, vector.x(), vector.y());
  59 }
  60
  61 }  // namespace
  62
  63 DEFINE_WINDOW_PROPERTY_KEY(aura::Window*, kContentWindowForRootWindow, NULL);
  64
  65 // Identifies the DesktopWindowTreeHostWin associated with the
  66 // WindowEventDispatcher.
  67 DEFINE_WINDOW_PROPERTY_KEY(DesktopWindowTreeHostWin*, kDesktopWindowTreeHostKey,
  68                            NULL);
  69
  70 ////////////////////////////////////////////////////////////////////////////////
  71 // DesktopWindowTreeHostWin, public:
  72
  73 bool DesktopWindowTreeHostWin::is_cursor_visible_ = true;
  74
  75 DesktopWindowTreeHostWin::DesktopWindowTreeHostWin(
  76     internal::NativeWidgetDelegate* native_widget_delegate,
  77     DesktopNativeWidgetAura* desktop_native_widget_aura)
  78     : message_handler_(new HWNDMessageHandler(this)),
  79       native_widget_delegate_(native_widget_delegate),
  80       desktop_native_widget_aura_(desktop_native_widget_aura),
  81       content_window_(NULL),
  82       drag_drop_client_(NULL),
  83       should_animate_window_close_(false),
  84       pending_close_(false),
  85       has_non_client_view_(false),
  86       tooltip_(NULL) {
  87 }
  88
  89 DesktopWindowTreeHostWin::~DesktopWindowTreeHostWin() {
  90   // WARNING: |content_window_| has been destroyed by the time we get here.
  91   desktop_native_widget_aura_->OnDesktopWindowTreeHostDestroyed(this);
  92   DestroyDispatcher();
  93 }
  94
  95 // static
  96 aura::Window* DesktopWindowTreeHostWin::GetContentWindowForHWND(HWND hwnd) {
  97   aura::WindowTreeHost* host =
  98       aura::WindowTreeHost::GetForAcceleratedWidget(hwnd);
  99   return host ? host->window()->GetProperty(kContentWindowForRootWindow) : NULL;
 100 }
 101
 102 // static
 103 ui::NativeTheme* DesktopWindowTreeHost::GetNativeTheme(aura::Window* window) {
 104   // Use NativeThemeWin for windows shown on the desktop, those not on the
 105   // desktop come from Ash and get NativeThemeAura.
 106   aura::WindowTreeHost* host = window ? window->GetHost() : NULL;
 107   if (host) {
 108     HWND host_hwnd = host->GetAcceleratedWidget();
 109     if (host_hwnd &&
 110         DesktopWindowTreeHostWin::GetContentWindowForHWND(host_hwnd)) {
 111       return ui::NativeThemeWin::instance();
 112     }
 113   }
 114   return ui::NativeThemeAura::instance();
 115 }
 116
 117 ////////////////////////////////////////////////////////////////////////////////
 118 // DesktopWindowTreeHostWin, DesktopWindowTreeHost implementation:
 119
 120 void DesktopWindowTreeHostWin::Init(aura::Window* content_window,
 121                                     const Widget::InitParams& params) {
 122   // TODO(beng): SetInitParams().
 123   content_window_ = content_window;
 124
 125   aura::client::SetAnimationHost(content_window_, this);
 126
 127   ConfigureWindowStyles(message_handler_.get(), params,
 128                         GetWidget()->widget_delegate(),
 129                         native_widget_delegate_);
 130
 131   HWND parent_hwnd = NULL;
 132   if (params.parent && params.parent->GetHost())
 133     parent_hwnd = params.parent->GetHost()->GetAcceleratedWidget();
 134
 135   message_handler_->set_remove_standard_frame(params.remove_standard_frame);
 136
 137   has_non_client_view_ = Widget::RequiresNonClientView(params.type);
 138
 139   gfx::Rect pixel_bounds = gfx::win::DIPToScreenRect(params.bounds);
 140   message_handler_->Init(parent_hwnd, pixel_bounds);
 141   if (params.type == Widget::InitParams::TYPE_MENU) {
 142     ::SetProp(GetAcceleratedWidget(),
 143               kForceSoftwareCompositor,
 144               reinterpret_cast<HANDLE>(true));
 145   }
 146   CreateCompositor(GetAcceleratedWidget());
 147 }
 148
 149 void DesktopWindowTreeHostWin::OnNativeWidgetCreated(
 150     const Widget::InitParams& params) {
 151   // The cursor is not necessarily visible when the root window is created.
 152   aura::client::CursorClient* cursor_client =
 153       aura::client::GetCursorClient(window());
 154   if (cursor_client)
 155     is_cursor_visible_ = cursor_client->IsCursorVisible();
 156
 157   window()->SetProperty(kContentWindowForRootWindow, content_window_);
 158   window()->SetProperty(kDesktopWindowTreeHostKey, this);
 159
 160   should_animate_window_close_ =
 161       content_window_->type() != ui::wm::WINDOW_TYPE_NORMAL &&
 162       !wm::WindowAnimationsDisabled(content_window_);
 163
 164 // TODO this is not invoked *after* Init(), but should be ok.
 165   SetWindowTransparency();
 166 }
 167
 168 scoped_ptr<corewm::Tooltip> DesktopWindowTreeHostWin::CreateTooltip() {
 169   DCHECK(!tooltip_);
 170   tooltip_ = new corewm::TooltipWin(GetAcceleratedWidget());
 171   return scoped_ptr<corewm::Tooltip>(tooltip_);
 172 }
 173
 174 scoped_ptr<aura::client::DragDropClient>
 175 DesktopWindowTreeHostWin::CreateDragDropClient(
 176     DesktopNativeCursorManager* cursor_manager) {
 177   drag_drop_client_ = new DesktopDragDropClientWin(window(), GetHWND());
 178   return scoped_ptr<aura::client::DragDropClient>(drag_drop_client_).Pass();
 179 }
 180
 181 void DesktopWindowTreeHostWin::Close() {
 182   // TODO(beng): Move this entire branch to DNWA so it can be shared with X11.
 183   if (should_animate_window_close_) {
 184     pending_close_ = true;
 185     const bool is_animating =
 186         content_window_->layer()->GetAnimator()->IsAnimatingProperty(
 187             ui::LayerAnimationElement::VISIBILITY);
 188     // Animation may not start for a number of reasons.
 189     if (!is_animating)
 190       message_handler_->Close();
 191     // else case, OnWindowHidingAnimationCompleted does the actual Close.
 192   } else {
 193     message_handler_->Close();
 194   }
 195 }
 196
 197 void DesktopWindowTreeHostWin::CloseNow() {
 198   message_handler_->CloseNow();
 199 }
 200
 201 aura::WindowTreeHost* DesktopWindowTreeHostWin::AsWindowTreeHost() {
 202   return this;
 203 }
 204
 205 void DesktopWindowTreeHostWin::ShowWindowWithState(
 206     ui::WindowShowState show_state) {
 207   message_handler_->ShowWindowWithState(show_state);
 208 }
 209
 210 void DesktopWindowTreeHostWin::ShowMaximizedWithBounds(
 211     const gfx::Rect& restored_bounds) {
 212   gfx::Rect pixel_bounds = gfx::win::DIPToScreenRect(restored_bounds);
 213   message_handler_->ShowMaximizedWithBounds(pixel_bounds);
 214 }
 215
 216 bool DesktopWindowTreeHostWin::IsVisible() const {
 217   return message_handler_->IsVisible();
 218 }
 219
 220 void DesktopWindowTreeHostWin::SetSize(const gfx::Size& size) {
 221   gfx::Size size_in_pixels = gfx::win::DIPToScreenSize(size);
 222   gfx::Size expanded = GetExpandedWindowSize(
 223       message_handler_->window_ex_style(), size_in_pixels);
 224   window_enlargement_ =
 225       gfx::Vector2d(expanded.width() - size_in_pixels.width(),
 226                     expanded.height() - size_in_pixels.height());
 227   message_handler_->SetSize(expanded);
 228 }
 229
 230 void DesktopWindowTreeHostWin::StackAtTop() {
 231   message_handler_->StackAtTop();
 232 }
 233
 234 void DesktopWindowTreeHostWin::CenterWindow(const gfx::Size& size) {
 235   gfx::Size size_in_pixels = gfx::win::DIPToScreenSize(size);
 236   gfx::Size expanded_size;
 237   expanded_size = GetExpandedWindowSize(message_handler_->window_ex_style(),
 238                                         size_in_pixels);
 239   window_enlargement_ =
 240       gfx::Vector2d(expanded_size.width() - size_in_pixels.width(),
 241                     expanded_size.height() - size_in_pixels.height());
 242   message_handler_->CenterWindow(expanded_size);
 243 }
 244
 245 void DesktopWindowTreeHostWin::GetWindowPlacement(
 246     gfx::Rect* bounds,
 247     ui::WindowShowState* show_state) const {
 248   message_handler_->GetWindowPlacement(bounds, show_state);
 249   InsetBottomRight(bounds, window_enlargement_);
 250   *bounds = gfx::win::ScreenToDIPRect(*bounds);
 251 }
 252
 253 gfx::Rect DesktopWindowTreeHostWin::GetWindowBoundsInScreen() const {
 254   gfx::Rect pixel_bounds = message_handler_->GetWindowBoundsInScreen();
 255   InsetBottomRight(&pixel_bounds, window_enlargement_);
 256   return gfx::win::ScreenToDIPRect(pixel_bounds);
 257 }
 258
 259 gfx::Rect DesktopWindowTreeHostWin::GetClientAreaBoundsInScreen() const {
 260   gfx::Rect pixel_bounds = message_handler_->GetClientAreaBoundsInScreen();
 261   InsetBottomRight(&pixel_bounds, window_enlargement_);
 262   return gfx::win::ScreenToDIPRect(pixel_bounds);
 263 }
 264
 265 gfx::Rect DesktopWindowTreeHostWin::GetRestoredBounds() const {
 266   gfx::Rect pixel_bounds = message_handler_->GetRestoredBounds();
 267   InsetBottomRight(&pixel_bounds, window_enlargement_);
 268   return gfx::win::ScreenToDIPRect(pixel_bounds);
 269 }
 270
 271 gfx::Rect DesktopWindowTreeHostWin::GetWorkAreaBoundsInScreen() const {
 272   MONITORINFO monitor_info;
 273   monitor_info.cbSize = sizeof(monitor_info);
 274   GetMonitorInfo(MonitorFromWindow(message_handler_->hwnd(),
 275                                    MONITOR_DEFAULTTONEAREST),
 276                  &monitor_info);
 277   gfx::Rect pixel_bounds = gfx::Rect(monitor_info.rcWork);
 278   return gfx::win::ScreenToDIPRect(pixel_bounds);
 279 }
 280
 281 void DesktopWindowTreeHostWin::SetShape(gfx::NativeRegion native_region) {
 282   if (native_region) {
 283     message_handler_->SetRegion(gfx::CreateHRGNFromSkRegion(*native_region));
 284   } else {
 285     message_handler_->SetRegion(NULL);
 286   }
 287
 288   delete native_region;
 289 }
 290
 291 void DesktopWindowTreeHostWin::Activate() {
 292   message_handler_->Activate();
 293 }
 294
 295 void DesktopWindowTreeHostWin::Deactivate() {
 296   message_handler_->Deactivate();
 297 }
 298
 299 bool DesktopWindowTreeHostWin::IsActive() const {
 300   return message_handler_->IsActive();
 301 }
 302
 303 void DesktopWindowTreeHostWin::Maximize() {
 304   message_handler_->Maximize();
 305 }
 306
 307 void DesktopWindowTreeHostWin::Minimize() {
 308   message_handler_->Minimize();
 309 }
 310
 311 void DesktopWindowTreeHostWin::Restore() {
 312   message_handler_->Restore();
 313 }
 314
 315 bool DesktopWindowTreeHostWin::IsMaximized() const {
 316   return message_handler_->IsMaximized();
 317 }
 318
 319 bool DesktopWindowTreeHostWin::IsMinimized() const {
 320   return message_handler_->IsMinimized();
 321 }
 322
 323 bool DesktopWindowTreeHostWin::HasCapture() const {
 324   return message_handler_->HasCapture();
 325 }
 326
 327 void DesktopWindowTreeHostWin::SetAlwaysOnTop(bool always_on_top) {
 328   message_handler_->SetAlwaysOnTop(always_on_top);
 329 }
 330
 331 bool DesktopWindowTreeHostWin::IsAlwaysOnTop() const {
 332   return message_handler_->IsAlwaysOnTop();
 333 }
 334
 335 void DesktopWindowTreeHostWin::SetVisibleOnAllWorkspaces(bool always_visible) {
 336   // Windows does not have the concept of workspaces.
 337 }
 338
 339 bool DesktopWindowTreeHostWin::SetWindowTitle(const base::string16& title) {
 340   return message_handler_->SetTitle(title);
 341 }
 342
 343 void DesktopWindowTreeHostWin::ClearNativeFocus() {
 344   message_handler_->ClearNativeFocus();
 345 }
 346
 347 Widget::MoveLoopResult DesktopWindowTreeHostWin::RunMoveLoop(
 348     const gfx::Vector2d& drag_offset,
 349     Widget::MoveLoopSource source,
 350     Widget::MoveLoopEscapeBehavior escape_behavior) {
 351   const bool hide_on_escape =
 352       escape_behavior == Widget::MOVE_LOOP_ESCAPE_BEHAVIOR_HIDE;
 353   return message_handler_->RunMoveLoop(drag_offset, hide_on_escape) ?
 354       Widget::MOVE_LOOP_SUCCESSFUL : Widget::MOVE_LOOP_CANCELED;
 355 }
 356
 357 void DesktopWindowTreeHostWin::EndMoveLoop() {
 358   message_handler_->EndMoveLoop();
 359 }
 360
 361 void DesktopWindowTreeHostWin::SetVisibilityChangedAnimationsEnabled(
 362     bool value) {
 363   message_handler_->SetVisibilityChangedAnimationsEnabled(value);
 364   content_window_->SetProperty(aura::client::kAnimationsDisabledKey, !value);
 365 }
 366
 367 bool DesktopWindowTreeHostWin::ShouldUseNativeFrame() const {
 368   return ui::win::IsAeroGlassEnabled();
 369 }
 370
 371 bool DesktopWindowTreeHostWin::ShouldWindowContentsBeTransparent() const {
 372   // If the window has a native frame, we assume it is an Aero Glass window, and
 373   // is therefore transparent. Note: This is not equivalent to calling
 374   // IsAeroGlassEnabled, because ShouldUseNativeFrame is overridden in a
 375   // subclass.
 376   return ShouldUseNativeFrame();
 377 }
 378
 379 void DesktopWindowTreeHostWin::FrameTypeChanged() {
 380   message_handler_->FrameTypeChanged();
 381   SetWindowTransparency();
 382 }
 383
 384 void DesktopWindowTreeHostWin::SetFullscreen(bool fullscreen) {
 385   message_handler_->fullscreen_handler()->SetFullscreen(fullscreen);
 386   // TODO(sky): workaround for ScopedFullscreenVisibility showing window
 387   // directly. Instead of this should listen for visibility changes and then
 388   // update window.
 389   if (message_handler_->IsVisible() && !content_window_->TargetVisibility())
 390     content_window_->Show();
 391   SetWindowTransparency();
 392 }
 393
 394 bool DesktopWindowTreeHostWin::IsFullscreen() const {
 395   return message_handler_->fullscreen_handler()->fullscreen();
 396 }
 397
 398 void DesktopWindowTreeHostWin::SetOpacity(unsigned char opacity) {
 399   message_handler_->SetOpacity(static_cast<BYTE>(opacity));
 400   content_window_->layer()->SetOpacity(opacity / 255.0);
 401 }
 402
 403 void DesktopWindowTreeHostWin::SetWindowIcons(
 404     const gfx::ImageSkia& window_icon, const gfx::ImageSkia& app_icon) {
 405   message_handler_->SetWindowIcons(window_icon, app_icon);
 406 }
 407
 408 void DesktopWindowTreeHostWin::InitModalType(ui::ModalType modal_type) {
 409   message_handler_->InitModalType(modal_type);
 410 }
 411
 412 void DesktopWindowTreeHostWin::FlashFrame(bool flash_frame) {
 413   message_handler_->FlashFrame(flash_frame);
 414 }
 415
 416 void DesktopWindowTreeHostWin::OnRootViewLayout() const {
 417 }
 418
 419 void DesktopWindowTreeHostWin::OnNativeWidgetFocus() {
 420   // HWNDMessageHandler will perform the proper updating on its own.
 421 }
 422
 423 void DesktopWindowTreeHostWin::OnNativeWidgetBlur() {
 424 }
 425
 426 bool DesktopWindowTreeHostWin::IsAnimatingClosed() const {
 427   return pending_close_;
 428 }
 429
 430 ////////////////////////////////////////////////////////////////////////////////
 431 // DesktopWindowTreeHostWin, WindowTreeHost implementation:
 432
 433 ui::EventSource* DesktopWindowTreeHostWin::GetEventSource() {
 434   return this;
 435 }
 436
 437 gfx::AcceleratedWidget DesktopWindowTreeHostWin::GetAcceleratedWidget() {
 438   return message_handler_->hwnd();
 439 }
 440
 441 void DesktopWindowTreeHostWin::Show() {
 442   message_handler_->Show();
 443 }
 444
 445 void DesktopWindowTreeHostWin::Hide() {
 446   if (!pending_close_)
 447     message_handler_->Hide();
 448 }
 449
 450 // GetBounds and SetBounds work in pixel coordinates, whereas other get/set
 451 // methods work in DIP.
 452
 453 gfx::Rect DesktopWindowTreeHostWin::GetBounds() const {
 454   gfx::Rect bounds(message_handler_->GetClientAreaBounds());
 455   // If the window bounds were expanded we need to return the original bounds
 456   // To achieve this we do the reverse of the expansion, i.e. add the
 457   // window_expansion_top_left_delta_ to the origin and subtract the
 458   // window_expansion_bottom_right_delta_ from the width and height.
 459   gfx::Rect without_expansion(
 460       bounds.x() + window_expansion_top_left_delta_.x(),
 461       bounds.y() + window_expansion_top_left_delta_.y(),
 462       bounds.width() - window_expansion_bottom_right_delta_.x() -
 463           window_enlargement_.x(),
 464       bounds.height() - window_expansion_bottom_right_delta_.y() -
 465           window_enlargement_.y());
 466   return without_expansion;
 467 }
 468
 469 void DesktopWindowTreeHostWin::SetBounds(const gfx::Rect& bounds) {
 470   // If the window bounds have to be expanded we need to subtract the
 471   // window_expansion_top_left_delta_ from the origin and add the
 472   // window_expansion_bottom_right_delta_ to the width and height
 473   gfx::Size old_hwnd_size(message_handler_->GetClientAreaBounds().size());
 474   gfx::Size old_content_size = GetBounds().size();
 475
 476   gfx::Rect expanded(
 477       bounds.x() - window_expansion_top_left_delta_.x(),
 478       bounds.y() - window_expansion_top_left_delta_.y(),
 479       bounds.width() + window_expansion_bottom_right_delta_.x(),
 480       bounds.height() + window_expansion_bottom_right_delta_.y());
 481
 482   gfx::Rect new_expanded(
 483       expanded.origin(),
 484       GetExpandedWindowSize(message_handler_->window_ex_style(),
 485                             expanded.size()));
 486   window_enlargement_ =
 487       gfx::Vector2d(new_expanded.width() - expanded.width(),
 488                     new_expanded.height() - expanded.height());
 489   message_handler_->SetBounds(new_expanded, old_content_size != bounds.size());
 490 }
 491
 492 gfx::Point DesktopWindowTreeHostWin::GetLocationOnNativeScreen() const {
 493   return GetBounds().origin();
 494 }
 495
 496 void DesktopWindowTreeHostWin::SetCapture() {
 497   message_handler_->SetCapture();
 498 }
 499
 500 void DesktopWindowTreeHostWin::ReleaseCapture() {
 501   message_handler_->ReleaseCapture();
 502 }
 503
 504 void DesktopWindowTreeHostWin::PostNativeEvent(
 505     const base::NativeEvent& native_event) {
 506 }
 507
 508 void DesktopWindowTreeHostWin::OnDeviceScaleFactorChanged(
 509     float device_scale_factor) {
 510 }
 511
 512 void DesktopWindowTreeHostWin::SetCursorNative(gfx::NativeCursor cursor) {
 513   ui::CursorLoaderWin cursor_loader;
 514   cursor_loader.SetPlatformCursor(&cursor);
 515
 516   message_handler_->SetCursor(cursor.platform());
 517 }
 518
 519 void DesktopWindowTreeHostWin::OnCursorVisibilityChangedNative(bool show) {
 520   if (is_cursor_visible_ == show)
 521     return;
 522   is_cursor_visible_ = show;
 523   ::ShowCursor(!!show);
 524 }
 525
 526 void DesktopWindowTreeHostWin::MoveCursorToNative(const gfx::Point& location) {
 527   POINT cursor_location = location.ToPOINT();
 528   ::ClientToScreen(GetHWND(), &cursor_location);
 529   ::SetCursorPos(cursor_location.x, cursor_location.y);
 530 }
 531
 532 ////////////////////////////////////////////////////////////////////////////////
 533 // DesktopWindowTreeHostWin, ui::EventSource implementation:
 534
 535 ui::EventProcessor* DesktopWindowTreeHostWin::GetEventProcessor() {
 536   return dispatcher();
 537 }
 538
 539 ////////////////////////////////////////////////////////////////////////////////
 540 // DesktopWindowTreeHostWin, aura::AnimationHost implementation:
 541
 542 void DesktopWindowTreeHostWin::SetHostTransitionOffsets(
 543     const gfx::Vector2d& top_left_delta,
 544     const gfx::Vector2d& bottom_right_delta) {
 545   gfx::Rect bounds_without_expansion = GetBounds();
 546   window_expansion_top_left_delta_ = top_left_delta;
 547   window_expansion_bottom_right_delta_ = bottom_right_delta;
 548   SetBounds(bounds_without_expansion);
 549 }
 550
 551 void DesktopWindowTreeHostWin::OnWindowHidingAnimationCompleted() {
 552   if (pending_close_)
 553     message_handler_->Close();
 554 }
 555
 556 ////////////////////////////////////////////////////////////////////////////////
 557 // DesktopWindowTreeHostWin, HWNDMessageHandlerDelegate implementation:
 558
 559 bool DesktopWindowTreeHostWin::IsWidgetWindow() const {
 560   return has_non_client_view_;
 561 }
 562
 563 bool DesktopWindowTreeHostWin::IsUsingCustomFrame() const {
 564   return !GetWidget()->ShouldUseNativeFrame();
 565 }
 566
 567 void DesktopWindowTreeHostWin::SchedulePaint() {
 568   GetWidget()->GetRootView()->SchedulePaint();
 569 }
 570
 571 void DesktopWindowTreeHostWin::EnableInactiveRendering() {
 572   native_widget_delegate_->EnableInactiveRendering();
 573 }
 574
 575 bool DesktopWindowTreeHostWin::IsInactiveRenderingDisabled() {
 576   return native_widget_delegate_->IsInactiveRenderingDisabled();
 577 }
 578
 579 bool DesktopWindowTreeHostWin::CanResize() const {
 580   return GetWidget()->widget_delegate()->CanResize();
 581 }
 582
 583 bool DesktopWindowTreeHostWin::CanMaximize() const {
 584   return GetWidget()->widget_delegate()->CanMaximize();
 585 }
 586
 587 bool DesktopWindowTreeHostWin::CanActivate() const {
 588   if (IsModalWindowActive())
 589     return true;
 590   return native_widget_delegate_->CanActivate();
 591 }
 592
 593 bool DesktopWindowTreeHostWin::WidgetSizeIsClientSize() const {
 594   const Widget* widget = GetWidget()->GetTopLevelWidget();
 595   return IsMaximized() || (widget && widget->ShouldUseNativeFrame());
 596 }
 597
 598 bool DesktopWindowTreeHostWin::IsModal() const {
 599   return native_widget_delegate_->IsModal();
 600 }
 601
 602 int DesktopWindowTreeHostWin::GetInitialShowState() const {
 603   return CanActivate() ? SW_SHOWNORMAL : SW_SHOWNOACTIVATE;
 604 }
 605
 606 bool DesktopWindowTreeHostWin::WillProcessWorkAreaChange() const {
 607   return GetWidget()->widget_delegate()->WillProcessWorkAreaChange();
 608 }
 609
 610 int DesktopWindowTreeHostWin::GetNonClientComponent(
 611     const gfx::Point& point) const {
 612   gfx::Point dip_position = gfx::win::ScreenToDIPPoint(point);
 613   return native_widget_delegate_->GetNonClientComponent(dip_position);
 614 }
 615
 616 void DesktopWindowTreeHostWin::GetWindowMask(const gfx::Size& size,
 617                                              gfx::Path* path) {
 618   if (GetWidget()->non_client_view()) {
 619     GetWidget()->non_client_view()->GetWindowMask(size, path);
 620   } else if (!window_enlargement_.IsZero()) {
 621     gfx::Rect bounds(WidgetSizeIsClientSize()
 622                          ? message_handler_->GetClientAreaBoundsInScreen()
 623                          : message_handler_->GetWindowBoundsInScreen());
 624     InsetBottomRight(&bounds, window_enlargement_);
 625     path->addRect(SkRect::MakeXYWH(0, 0, bounds.width(), bounds.height()));
 626   }
 627 }
 628
 629 bool DesktopWindowTreeHostWin::GetClientAreaInsets(gfx::Insets* insets) const {
 630   return false;
 631 }
 632
 633 void DesktopWindowTreeHostWin::GetMinMaxSize(gfx::Size* min_size,
 634                                              gfx::Size* max_size) const {
 635   *min_size = native_widget_delegate_->GetMinimumSize();
 636   *max_size = native_widget_delegate_->GetMaximumSize();
 637 }
 638
 639 gfx::Size DesktopWindowTreeHostWin::GetRootViewSize() const {
 640   return GetWidget()->GetRootView()->size();
 641 }
 642
 643 void DesktopWindowTreeHostWin::ResetWindowControls() {
 644   GetWidget()->non_client_view()->ResetWindowControls();
 645 }
 646
 647 void DesktopWindowTreeHostWin::PaintLayeredWindow(gfx::Canvas* canvas) {
 648   GetWidget()->GetRootView()->Paint(canvas, views::CullSet());
 649 }
 650
 651 gfx::NativeViewAccessible DesktopWindowTreeHostWin::GetNativeViewAccessible() {
 652   return GetWidget()->GetRootView()->GetNativeViewAccessible();
 653 }
 654
 655 InputMethod* DesktopWindowTreeHostWin::GetInputMethod() {
 656   return GetWidget()->GetInputMethodDirect();
 657 }
 658
 659 bool DesktopWindowTreeHostWin::ShouldHandleSystemCommands() const {
 660   return GetWidget()->widget_delegate()->ShouldHandleSystemCommands();
 661 }
 662
 663 void DesktopWindowTreeHostWin::HandleAppDeactivated() {
 664   native_widget_delegate_->EnableInactiveRendering();
 665 }
 666
 667 void DesktopWindowTreeHostWin::HandleActivationChanged(bool active) {
 668   // This can be invoked from HWNDMessageHandler::Init(), at which point we're
 669   // not in a good state and need to ignore it.
 670   // TODO(beng): Do we need this still now the host owns the dispatcher?
 671   if (!dispatcher())
 672     return;
 673
 674   if (active)
 675     OnHostActivated();
 676   desktop_native_widget_aura_->HandleActivationChanged(active);
 677 }
 678
 679 bool DesktopWindowTreeHostWin::HandleAppCommand(short command) {
 680   // We treat APPCOMMAND ids as an extension of our command namespace, and just
 681   // let the delegate figure out what to do...
 682   return GetWidget()->widget_delegate() &&
 683       GetWidget()->widget_delegate()->ExecuteWindowsCommand(command);
 684 }
 685
 686 void DesktopWindowTreeHostWin::HandleCancelMode() {
 687   dispatcher()->DispatchCancelModeEvent();
 688 }
 689
 690 void DesktopWindowTreeHostWin::HandleCaptureLost() {
 691   OnHostLostWindowCapture();
 692   native_widget_delegate_->OnMouseCaptureLost();
 693 }
 694
 695 void DesktopWindowTreeHostWin::HandleClose() {
 696   GetWidget()->Close();
 697 }
 698
 699 bool DesktopWindowTreeHostWin::HandleCommand(int command) {
 700   return GetWidget()->widget_delegate()->ExecuteWindowsCommand(command);
 701 }
 702
 703 void DesktopWindowTreeHostWin::HandleAccelerator(
 704     const ui::Accelerator& accelerator) {
 705   GetWidget()->GetFocusManager()->ProcessAccelerator(accelerator);
 706 }
 707
 708 void DesktopWindowTreeHostWin::HandleCreate() {
 709   native_widget_delegate_->OnNativeWidgetCreated(true);
 710 }
 711
 712 void DesktopWindowTreeHostWin::HandleDestroying() {
 713   drag_drop_client_->OnNativeWidgetDestroying(GetHWND());
 714   native_widget_delegate_->OnNativeWidgetDestroying();
 715
 716   // Destroy the compositor before destroying the HWND since shutdown
 717   // may try to swap to the window.
 718   DestroyCompositor();
 719 }
 720
 721 void DesktopWindowTreeHostWin::HandleDestroyed() {
 722   desktop_native_widget_aura_->OnHostClosed();
 723 }
 724
 725 bool DesktopWindowTreeHostWin::HandleInitialFocus(
 726     ui::WindowShowState show_state) {
 727   return GetWidget()->SetInitialFocus(show_state);
 728 }
 729
 730 void DesktopWindowTreeHostWin::HandleDisplayChange() {
 731   GetWidget()->widget_delegate()->OnDisplayChanged();
 732 }
 733
 734 void DesktopWindowTreeHostWin::HandleBeginWMSizeMove() {
 735   native_widget_delegate_->OnNativeWidgetBeginUserBoundsChange();
 736 }
 737
 738 void DesktopWindowTreeHostWin::HandleEndWMSizeMove() {
 739   native_widget_delegate_->OnNativeWidgetEndUserBoundsChange();
 740 }
 741
 742 void DesktopWindowTreeHostWin::HandleMove() {
 743   native_widget_delegate_->OnNativeWidgetMove();
 744   OnHostMoved(GetBounds().origin());
 745 }
 746
 747 void DesktopWindowTreeHostWin::HandleWorkAreaChanged() {
 748   GetWidget()->widget_delegate()->OnWorkAreaChanged();
 749 }
 750
 751 void DesktopWindowTreeHostWin::HandleVisibilityChanging(bool visible) {
 752   native_widget_delegate_->OnNativeWidgetVisibilityChanging(visible);
 753 }
 754
 755 void DesktopWindowTreeHostWin::HandleVisibilityChanged(bool visible) {
 756   native_widget_delegate_->OnNativeWidgetVisibilityChanged(visible);
 757 }
 758
 759 void DesktopWindowTreeHostWin::HandleClientSizeChanged(
 760     const gfx::Size& new_size) {
 761   if (dispatcher())
 762     OnHostResized(new_size);
 763 }
 764
 765 void DesktopWindowTreeHostWin::HandleFrameChanged() {
 766   SetWindowTransparency();
 767   // Replace the frame and layout the contents.
 768   GetWidget()->non_client_view()->UpdateFrame();
 769 }
 770
 771 void DesktopWindowTreeHostWin::HandleNativeFocus(HWND last_focused_window) {
 772   // TODO(beng): inform the native_widget_delegate_.
 773   InputMethod* input_method = GetInputMethod();
 774   if (input_method)
 775     input_method->OnFocus();
 776 }
 777
 778 void DesktopWindowTreeHostWin::HandleNativeBlur(HWND focused_window) {
 779   // TODO(beng): inform the native_widget_delegate_.
 780   InputMethod* input_method = GetInputMethod();
 781   if (input_method)
 782     input_method->OnBlur();
 783 }
 784
 785 bool DesktopWindowTreeHostWin::HandleMouseEvent(const ui::MouseEvent& event) {
 786   SendEventToProcessor(const_cast<ui::MouseEvent*>(&event));
 787   return event.handled();
 788 }
 789
 790 bool DesktopWindowTreeHostWin::HandleKeyEvent(const ui::KeyEvent& event) {
 791   return false;
 792 }
 793
 794 bool DesktopWindowTreeHostWin::HandleUntranslatedKeyEvent(
 795     const ui::KeyEvent& event) {
 796   ui::KeyEvent duplicate_event(event);
 797   SendEventToProcessor(&duplicate_event);
 798   return duplicate_event.handled();
 799 }
 800
 801 void DesktopWindowTreeHostWin::HandleTouchEvent(
 802     const ui::TouchEvent& event) {
 803   // HWNDMessageHandler asynchronously processes touch events. Because of this
 804   // it's possible for the aura::WindowEventDispatcher to have been destroyed
 805   // by the time we attempt to process them.
 806   if (!GetWidget()->GetNativeView())
 807     return;
 808
 809   // Currently we assume the window that has capture gets touch events too.
 810   aura::WindowTreeHost* host =
 811       aura::WindowTreeHost::GetForAcceleratedWidget(GetCapture());
 812   if (host) {
 813     DesktopWindowTreeHostWin* target =
 814         host->window()->GetProperty(kDesktopWindowTreeHostKey);
 815     if (target && target->HasCapture() && target != this) {
 816       POINT target_location(event.location().ToPOINT());
 817       ClientToScreen(GetHWND(), &target_location);
 818       ScreenToClient(target->GetHWND(), &target_location);
 819       ui::TouchEvent target_event(event, static_cast<View*>(NULL),
 820                                   static_cast<View*>(NULL));
 821       target_event.set_location(gfx::Point(target_location));
 822       target_event.set_root_location(target_event.location());
 823       target->SendEventToProcessor(&target_event);
 824       return;
 825     }
 826   }
 827   SendEventToProcessor(const_cast<ui::TouchEvent*>(&event));
 828 }
 829
 830 bool DesktopWindowTreeHostWin::HandleIMEMessage(UINT message,
 831                                                 WPARAM w_param,
 832                                                 LPARAM l_param,
 833                                                 LRESULT* result) {
 834   MSG msg = {};
 835   msg.hwnd = GetHWND();
 836   msg.message = message;
 837   msg.wParam = w_param;
 838   msg.lParam = l_param;
 839   return desktop_native_widget_aura_->input_method_event_filter()->
 840       input_method()->OnUntranslatedIMEMessage(msg, result);
 841 }
 842
 843 void DesktopWindowTreeHostWin::HandleInputLanguageChange(
 844     DWORD character_set,
 845     HKL input_language_id) {
 846   desktop_native_widget_aura_->input_method_event_filter()->
 847       input_method()->OnInputLocaleChanged();
 848 }
 849
 850 bool DesktopWindowTreeHostWin::HandlePaintAccelerated(
 851     const gfx::Rect& invalid_rect) {
 852   return native_widget_delegate_->OnNativeWidgetPaintAccelerated(invalid_rect);
 853 }
 854
 855 void DesktopWindowTreeHostWin::HandlePaint(gfx::Canvas* canvas) {
 856   // It appears possible to get WM_PAINT after WM_DESTROY.
 857   if (compositor())
 858     compositor()->ScheduleRedrawRect(gfx::Rect());
 859 }
 860
 861 bool DesktopWindowTreeHostWin::HandleTooltipNotify(int w_param,
 862                                                    NMHDR* l_param,
 863                                                    LRESULT* l_result) {
 864   return tooltip_ && tooltip_->HandleNotify(w_param, l_param, l_result);
 865 }
 866
 867 void DesktopWindowTreeHostWin::HandleTooltipMouseMove(UINT message,
 868                                                       WPARAM w_param,
 869                                                       LPARAM l_param) {
 870   // TooltipWin implementation doesn't need this.
 871   // TODO(sky): remove from HWNDMessageHandler once non-aura path nuked.
 872 }
 873
 874 void DesktopWindowTreeHostWin::HandleMenuLoop(bool in_menu_loop) {
 875   if (in_menu_loop) {
 876     tooltip_disabler_.reset(
 877         new aura::client::ScopedTooltipDisabler(window()));
 878   } else {
 879     tooltip_disabler_.reset();
 880   }
 881 }
 882
 883 bool DesktopWindowTreeHostWin::PreHandleMSG(UINT message,
 884                                             WPARAM w_param,
 885                                             LPARAM l_param,
 886                                             LRESULT* result) {
 887   return false;
 888 }
 889
 890 void DesktopWindowTreeHostWin::PostHandleMSG(UINT message,
 891                                              WPARAM w_param,
 892                                              LPARAM l_param) {
 893 }
 894
 895 bool DesktopWindowTreeHostWin::HandleScrollEvent(
 896     const ui::ScrollEvent& event) {
 897   SendEventToProcessor(const_cast<ui::ScrollEvent*>(&event));
 898   return event.handled();
 899 }
 900
 901 void DesktopWindowTreeHostWin::HandleWindowSizeChanging() {
 902   if (compositor())
 903     compositor()->FinishAllRendering();
 904 }
 905
 906 ////////////////////////////////////////////////////////////////////////////////
 907 // DesktopWindowTreeHostWin, private:
 908
 909 Widget* DesktopWindowTreeHostWin::GetWidget() {
 910   return native_widget_delegate_->AsWidget();
 911 }
 912
 913 const Widget* DesktopWindowTreeHostWin::GetWidget() const {
 914   return native_widget_delegate_->AsWidget();
 915 }
 916
 917 HWND DesktopWindowTreeHostWin::GetHWND() const {
 918   return message_handler_->hwnd();
 919 }
 920
 921 void DesktopWindowTreeHostWin::SetWindowTransparency() {
 922   bool transparent = ShouldUseNativeFrame() && !IsFullscreen();
 923   compositor()->SetHostHasTransparentBackground(transparent);
 924   window()->SetTransparent(transparent);
 925   content_window_->SetTransparent(transparent);
 926 }
 927
 928 bool DesktopWindowTreeHostWin::IsModalWindowActive() const {
 929   // This function can get called during window creation which occurs before
 930   // dispatcher() has been created.
 931   if (!dispatcher())
 932     return false;
 933
 934   aura::Window::Windows::const_iterator index;
 935   for (index = window()->children().begin();
 936        index != window()->children().end();
 937        ++index) {
 938     if ((*index)->GetProperty(aura::client::kModalKey) !=
 939         ui:: MODAL_TYPE_NONE && (*index)->TargetVisibility())
 940       return true;
 941   }
 942   return false;
 943 }
 944
 945 ////////////////////////////////////////////////////////////////////////////////
 946 // DesktopWindowTreeHost, public:
 947
 948 // static
 949 DesktopWindowTreeHost* DesktopWindowTreeHost::Create(
 950     internal::NativeWidgetDelegate* native_widget_delegate,
 951     DesktopNativeWidgetAura* desktop_native_widget_aura) {
 952   return new DesktopWindowTreeHostWin(native_widget_delegate,
 953                                       desktop_native_widget_aura);
 954 }
 955
 956 }  // namespace views