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 IsTranslucentWindowOpacitySupported();
 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_->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() {
 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 bool DesktopWindowTreeHostWin::IsTranslucentWindowOpacitySupported() const {
 431   return ui::win::IsAeroGlassEnabled();
 432 }
 433
 434 ////////////////////////////////////////////////////////////////////////////////
 435 // DesktopWindowTreeHostWin, WindowTreeHost implementation:
 436
 437 ui::EventSource* DesktopWindowTreeHostWin::GetEventSource() {
 438   return this;
 439 }
 440
 441 gfx::AcceleratedWidget DesktopWindowTreeHostWin::GetAcceleratedWidget() {
 442   return message_handler_->hwnd();
 443 }
 444
 445 void DesktopWindowTreeHostWin::Show() {
 446   message_handler_->Show();
 447 }
 448
 449 void DesktopWindowTreeHostWin::Hide() {
 450   if (!pending_close_)
 451     message_handler_->Hide();
 452 }
 453
 454 // GetBounds and SetBounds work in pixel coordinates, whereas other get/set
 455 // methods work in DIP.
 456
 457 gfx::Rect DesktopWindowTreeHostWin::GetBounds() const {
 458   gfx::Rect bounds(message_handler_->GetClientAreaBounds());
 459   // If the window bounds were expanded we need to return the original bounds
 460   // To achieve this we do the reverse of the expansion, i.e. add the
 461   // window_expansion_top_left_delta_ to the origin and subtract the
 462   // window_expansion_bottom_right_delta_ from the width and height.
 463   gfx::Rect without_expansion(
 464       bounds.x() + window_expansion_top_left_delta_.x(),
 465       bounds.y() + window_expansion_top_left_delta_.y(),
 466       bounds.width() - window_expansion_bottom_right_delta_.x() -
 467           window_enlargement_.x(),
 468       bounds.height() - window_expansion_bottom_right_delta_.y() -
 469           window_enlargement_.y());
 470   return without_expansion;
 471 }
 472
 473 void DesktopWindowTreeHostWin::SetBounds(const gfx::Rect& bounds) {
 474   // If the window bounds have to be expanded we need to subtract the
 475   // window_expansion_top_left_delta_ from the origin and add the
 476   // window_expansion_bottom_right_delta_ to the width and height
 477   gfx::Size old_hwnd_size(message_handler_->GetClientAreaBounds().size());
 478   gfx::Size old_content_size = GetBounds().size();
 479
 480   gfx::Rect expanded(
 481       bounds.x() - window_expansion_top_left_delta_.x(),
 482       bounds.y() - window_expansion_top_left_delta_.y(),
 483       bounds.width() + window_expansion_bottom_right_delta_.x(),
 484       bounds.height() + window_expansion_bottom_right_delta_.y());
 485
 486   gfx::Rect new_expanded(
 487       expanded.origin(),
 488       GetExpandedWindowSize(message_handler_->window_ex_style(),
 489                             expanded.size()));
 490   window_enlargement_ =
 491       gfx::Vector2d(new_expanded.width() - expanded.width(),
 492                     new_expanded.height() - expanded.height());
 493   message_handler_->SetBounds(new_expanded, old_content_size != bounds.size());
 494 }
 495
 496 gfx::Point DesktopWindowTreeHostWin::GetLocationOnNativeScreen() const {
 497   return GetBounds().origin();
 498 }
 499
 500 void DesktopWindowTreeHostWin::SetCapture() {
 501   message_handler_->SetCapture();
 502 }
 503
 504 void DesktopWindowTreeHostWin::ReleaseCapture() {
 505   message_handler_->ReleaseCapture();
 506 }
 507
 508 void DesktopWindowTreeHostWin::PostNativeEvent(
 509     const base::NativeEvent& native_event) {
 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 }
 693
 694 void DesktopWindowTreeHostWin::HandleClose() {
 695   GetWidget()->Close();
 696 }
 697
 698 bool DesktopWindowTreeHostWin::HandleCommand(int command) {
 699   return GetWidget()->widget_delegate()->ExecuteWindowsCommand(command);
 700 }
 701
 702 void DesktopWindowTreeHostWin::HandleAccelerator(
 703     const ui::Accelerator& accelerator) {
 704   GetWidget()->GetFocusManager()->ProcessAccelerator(accelerator);
 705 }
 706
 707 void DesktopWindowTreeHostWin::HandleCreate() {
 708   native_widget_delegate_->OnNativeWidgetCreated(true);
 709 }
 710
 711 void DesktopWindowTreeHostWin::HandleDestroying() {
 712   drag_drop_client_->OnNativeWidgetDestroying(GetHWND());
 713   native_widget_delegate_->OnNativeWidgetDestroying();
 714
 715   // Destroy the compositor before destroying the HWND since shutdown
 716   // may try to swap to the window.
 717   DestroyCompositor();
 718 }
 719
 720 void DesktopWindowTreeHostWin::HandleDestroyed() {
 721   desktop_native_widget_aura_->OnHostClosed();
 722 }
 723
 724 bool DesktopWindowTreeHostWin::HandleInitialFocus(
 725     ui::WindowShowState show_state) {
 726   return GetWidget()->SetInitialFocus(show_state);
 727 }
 728
 729 void DesktopWindowTreeHostWin::HandleDisplayChange() {
 730   GetWidget()->widget_delegate()->OnDisplayChanged();
 731 }
 732
 733 void DesktopWindowTreeHostWin::HandleBeginWMSizeMove() {
 734   native_widget_delegate_->OnNativeWidgetBeginUserBoundsChange();
 735 }
 736
 737 void DesktopWindowTreeHostWin::HandleEndWMSizeMove() {
 738   native_widget_delegate_->OnNativeWidgetEndUserBoundsChange();
 739 }
 740
 741 void DesktopWindowTreeHostWin::HandleMove() {
 742   native_widget_delegate_->OnNativeWidgetMove();
 743   OnHostMoved(GetBounds().origin());
 744 }
 745
 746 void DesktopWindowTreeHostWin::HandleWorkAreaChanged() {
 747   GetWidget()->widget_delegate()->OnWorkAreaChanged();
 748 }
 749
 750 void DesktopWindowTreeHostWin::HandleVisibilityChanging(bool visible) {
 751   native_widget_delegate_->OnNativeWidgetVisibilityChanging(visible);
 752 }
 753
 754 void DesktopWindowTreeHostWin::HandleVisibilityChanged(bool visible) {
 755   native_widget_delegate_->OnNativeWidgetVisibilityChanged(visible);
 756 }
 757
 758 void DesktopWindowTreeHostWin::HandleClientSizeChanged(
 759     const gfx::Size& new_size) {
 760   if (dispatcher())
 761     OnHostResized(new_size);
 762 }
 763
 764 void DesktopWindowTreeHostWin::HandleFrameChanged() {
 765   SetWindowTransparency();
 766   // Replace the frame and layout the contents.
 767   GetWidget()->non_client_view()->UpdateFrame();
 768 }
 769
 770 void DesktopWindowTreeHostWin::HandleNativeFocus(HWND last_focused_window) {
 771   // TODO(beng): inform the native_widget_delegate_.
 772   InputMethod* input_method = GetInputMethod();
 773   if (input_method)
 774     input_method->OnFocus();
 775 }
 776
 777 void DesktopWindowTreeHostWin::HandleNativeBlur(HWND focused_window) {
 778   // TODO(beng): inform the native_widget_delegate_.
 779   InputMethod* input_method = GetInputMethod();
 780   if (input_method)
 781     input_method->OnBlur();
 782 }
 783
 784 bool DesktopWindowTreeHostWin::HandleMouseEvent(const ui::MouseEvent& event) {
 785   SendEventToProcessor(const_cast<ui::MouseEvent*>(&event));
 786   return event.handled();
 787 }
 788
 789 bool DesktopWindowTreeHostWin::HandleKeyEvent(const ui::KeyEvent& event) {
 790   return false;
 791 }
 792
 793 bool DesktopWindowTreeHostWin::HandleUntranslatedKeyEvent(
 794     const ui::KeyEvent& event) {
 795   ui::KeyEvent duplicate_event(event);
 796   SendEventToProcessor(&duplicate_event);
 797   return duplicate_event.handled();
 798 }
 799
 800 void DesktopWindowTreeHostWin::HandleTouchEvent(
 801     const ui::TouchEvent& event) {
 802   // HWNDMessageHandler asynchronously processes touch events. Because of this
 803   // it's possible for the aura::WindowEventDispatcher to have been destroyed
 804   // by the time we attempt to process them.
 805   if (!GetWidget()->GetNativeView())
 806     return;
 807
 808   // Currently we assume the window that has capture gets touch events too.
 809   aura::WindowTreeHost* host =
 810       aura::WindowTreeHost::GetForAcceleratedWidget(GetCapture());
 811   if (host) {
 812     DesktopWindowTreeHostWin* target =
 813         host->window()->GetProperty(kDesktopWindowTreeHostKey);
 814     if (target && target->HasCapture() && target != this) {
 815       POINT target_location(event.location().ToPOINT());
 816       ClientToScreen(GetHWND(), &target_location);
 817       ScreenToClient(target->GetHWND(), &target_location);
 818       ui::TouchEvent target_event(event, static_cast<View*>(NULL),
 819                                   static_cast<View*>(NULL));
 820       target_event.set_location(gfx::Point(target_location));
 821       target_event.set_root_location(target_event.location());
 822       target->SendEventToProcessor(&target_event);
 823       return;
 824     }
 825   }
 826   SendEventToProcessor(const_cast<ui::TouchEvent*>(&event));
 827 }
 828
 829 bool DesktopWindowTreeHostWin::HandleIMEMessage(UINT message,
 830                                                 WPARAM w_param,
 831                                                 LPARAM l_param,
 832                                                 LRESULT* result) {
 833   MSG msg = {};
 834   msg.hwnd = GetHWND();
 835   msg.message = message;
 836   msg.wParam = w_param;
 837   msg.lParam = l_param;
 838   return desktop_native_widget_aura_->input_method_event_filter()->
 839       input_method()->OnUntranslatedIMEMessage(msg, result);
 840 }
 841
 842 void DesktopWindowTreeHostWin::HandleInputLanguageChange(
 843     DWORD character_set,
 844     HKL input_language_id) {
 845   desktop_native_widget_aura_->input_method_event_filter()->
 846       input_method()->OnInputLocaleChanged();
 847 }
 848
 849 bool DesktopWindowTreeHostWin::HandlePaintAccelerated(
 850     const gfx::Rect& invalid_rect) {
 851   return native_widget_delegate_->OnNativeWidgetPaintAccelerated(invalid_rect);
 852 }
 853
 854 void DesktopWindowTreeHostWin::HandlePaint(gfx::Canvas* canvas) {
 855   // It appears possible to get WM_PAINT after WM_DESTROY.
 856   if (compositor())
 857     compositor()->ScheduleRedrawRect(gfx::Rect());
 858 }
 859
 860 bool DesktopWindowTreeHostWin::HandleTooltipNotify(int w_param,
 861                                                    NMHDR* l_param,
 862                                                    LRESULT* l_result) {
 863   return tooltip_ && tooltip_->HandleNotify(w_param, l_param, l_result);
 864 }
 865
 866 void DesktopWindowTreeHostWin::HandleMenuLoop(bool in_menu_loop) {
 867   if (in_menu_loop) {
 868     tooltip_disabler_.reset(
 869         new aura::client::ScopedTooltipDisabler(window()));
 870   } else {
 871     tooltip_disabler_.reset();
 872   }
 873 }
 874
 875 bool DesktopWindowTreeHostWin::PreHandleMSG(UINT message,
 876                                             WPARAM w_param,
 877                                             LPARAM l_param,
 878                                             LRESULT* result) {
 879   return false;
 880 }
 881
 882 void DesktopWindowTreeHostWin::PostHandleMSG(UINT message,
 883                                              WPARAM w_param,
 884                                              LPARAM l_param) {
 885 }
 886
 887 bool DesktopWindowTreeHostWin::HandleScrollEvent(
 888     const ui::ScrollEvent& event) {
 889   SendEventToProcessor(const_cast<ui::ScrollEvent*>(&event));
 890   return event.handled();
 891 }
 892
 893 void DesktopWindowTreeHostWin::HandleWindowSizeChanging() {
 894   if (compositor())
 895     compositor()->FinishAllRendering();
 896 }
 897
 898 ////////////////////////////////////////////////////////////////////////////////
 899 // DesktopWindowTreeHostWin, private:
 900
 901 Widget* DesktopWindowTreeHostWin::GetWidget() {
 902   return native_widget_delegate_->AsWidget();
 903 }
 904
 905 const Widget* DesktopWindowTreeHostWin::GetWidget() const {
 906   return native_widget_delegate_->AsWidget();
 907 }
 908
 909 HWND DesktopWindowTreeHostWin::GetHWND() const {
 910   return message_handler_->hwnd();
 911 }
 912
 913 void DesktopWindowTreeHostWin::SetWindowTransparency() {
 914   bool transparent = ShouldUseNativeFrame() && !IsFullscreen();
 915   compositor()->SetHostHasTransparentBackground(transparent);
 916   window()->SetTransparent(transparent);
 917   content_window_->SetTransparent(transparent);
 918 }
 919
 920 bool DesktopWindowTreeHostWin::IsModalWindowActive() const {
 921   // This function can get called during window creation which occurs before
 922   // dispatcher() has been created.
 923   if (!dispatcher())
 924     return false;
 925
 926   aura::Window::Windows::const_iterator index;
 927   for (index = window()->children().begin();
 928        index != window()->children().end();
 929        ++index) {
 930     if ((*index)->GetProperty(aura::client::kModalKey) !=
 931         ui:: MODAL_TYPE_NONE && (*index)->TargetVisibility())
 932       return true;
 933   }
 934   return false;
 935 }
 936
 937 ////////////////////////////////////////////////////////////////////////////////
 938 // DesktopWindowTreeHost, public:
 939
 940 // static
 941 DesktopWindowTreeHost* DesktopWindowTreeHost::Create(
 942     internal::NativeWidgetDelegate* native_widget_delegate,
 943     DesktopNativeWidgetAura* desktop_native_widget_aura) {
 944   return new DesktopWindowTreeHostWin(native_widget_delegate,
 945                                       desktop_native_widget_aura);
 946 }
 947
 948 }  // namespace views