ash/display/window_tree_host_manager_unittest.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 "ash/display/window_tree_host_manager.h"
   6
   7 #include "ash/ash_switches.h"
   8 #include "ash/display/display_info.h"
   9 #include "ash/display/display_layout_store.h"
  10 #include "ash/display/display_manager.h"
  11 #include "ash/display/display_util.h"
  12 #include "ash/screen_util.h"
  13 #include "ash/shelf/shelf.h"
  14 #include "ash/shelf/shelf_widget.h"
  15 #include "ash/shell.h"
  16 #include "ash/test/ash_test_base.h"
  17 #include "ash/test/ash_test_helper.h"
  18 #include "ash/test/cursor_manager_test_api.h"
  19 #include "ash/test/display_manager_test_api.h"
  20 #include "ash/test/test_shell_delegate.h"
  21 #include "ash/wm/window_state.h"
  22 #include "ash/wm/wm_event.h"
  23 #include "base/command_line.h"
  24 #include "ui/aura/client/focus_change_observer.h"
  25 #include "ui/aura/client/focus_client.h"
  26 #include "ui/aura/env.h"
  27 #include "ui/aura/window_tracker.h"
  28 #include "ui/aura/window_tree_host.h"
  29 #include "ui/events/event_handler.h"
  30 #include "ui/events/test/event_generator.h"
  31 #include "ui/gfx/display.h"
  32 #include "ui/gfx/screen.h"
  33 #include "ui/views/mouse_watcher.h"
  34 #include "ui/views/mouse_watcher_view_host.h"
  35 #include "ui/views/view.h"
  36 #include "ui/views/widget/widget.h"
  37 #include "ui/wm/public/activation_change_observer.h"
  38 #include "ui/wm/public/activation_client.h"
  39
  40 namespace ash {
  41 namespace {
  42
  43 const char kDesktopBackgroundView[] = "DesktopBackgroundView";
  44
  45 template <typename T>
  46 class Resetter {
  47  public:
  48   explicit Resetter(T* value) : value_(*value) { *value = 0; }
  49   ~Resetter() {}
  50   T value() { return value_; }
  51
  52  private:
  53   T value_;
  54   DISALLOW_COPY_AND_ASSIGN(Resetter);
  55 };
  56
  57 class TestObserver : public WindowTreeHostManager::Observer,
  58                      public gfx::DisplayObserver,
  59                      public aura::client::FocusChangeObserver,
  60                      public aura::client::ActivationChangeObserver {
  61  public:
  62   TestObserver()
  63       : changing_count_(0),
  64         changed_count_(0),
  65         bounds_changed_count_(0),
  66         rotation_changed_count_(0),
  67         workarea_changed_count_(0),
  68         primary_changed_count_(0),
  69         changed_display_id_(0),
  70         focus_changed_count_(0),
  71         activation_changed_count_(0) {
  72     Shell::GetInstance()->window_tree_host_manager()->AddObserver(this);
  73     Shell::GetScreen()->AddObserver(this);
  74     aura::client::GetFocusClient(Shell::GetPrimaryRootWindow())
  75         ->AddObserver(this);
  76     aura::client::GetActivationClient(Shell::GetPrimaryRootWindow())
  77         ->AddObserver(this);
  78   }
  79
  80   ~TestObserver() override {
  81     Shell::GetInstance()->window_tree_host_manager()->RemoveObserver(this);
  82     Shell::GetScreen()->RemoveObserver(this);
  83     aura::client::GetFocusClient(Shell::GetPrimaryRootWindow())
  84         ->RemoveObserver(this);
  85     aura::client::GetActivationClient(Shell::GetPrimaryRootWindow())
  86         ->RemoveObserver(this);
  87   }
  88
  89   // Overridden from WindowTreeHostManager::Observer
  90   void OnDisplayConfigurationChanging() override { ++changing_count_; }
  91   void OnDisplayConfigurationChanged() override { ++changed_count_; }
  92
  93   // Overrideen from gfx::DisplayObserver
  94   void OnDisplayMetricsChanged(const gfx::Display& display,
  95                                uint32_t metrics) override {
  96     changed_display_id_ = display.id();
  97     if (metrics & DISPLAY_METRIC_BOUNDS)
  98       ++bounds_changed_count_;
  99     if (metrics & DISPLAY_METRIC_ROTATION)
 100       ++rotation_changed_count_;
 101     if (metrics & DISPLAY_METRIC_WORK_AREA)
 102       ++workarea_changed_count_;
 103     if (metrics & DISPLAY_METRIC_PRIMARY)
 104       ++primary_changed_count_;
 105   }
 106   void OnDisplayAdded(const gfx::Display& new_display) override {}
 107   void OnDisplayRemoved(const gfx::Display& old_display) override {}
 108
 109   // Overridden from aura::client::FocusChangeObserver
 110   void OnWindowFocused(aura::Window* gained_focus,
 111                        aura::Window* lost_focus) override {
 112     focus_changed_count_++;
 113   }
 114
 115   // Overridden from aura::client::ActivationChangeObserver
 116   void OnWindowActivated(
 117       aura::client::ActivationChangeObserver::ActivationReason reason,
 118       aura::Window* gained_active,
 119       aura::Window* lost_active) override {
 120     activation_changed_count_++;
 121   }
 122   void OnAttemptToReactivateWindow(aura::Window* request_active,
 123                                    aura::Window* actual_active) override {}
 124
 125   int CountAndReset() {
 126     EXPECT_EQ(changing_count_, changed_count_);
 127     changed_count_ = 0;
 128     return Resetter<int>(&changing_count_).value();
 129   }
 130
 131   int64 GetBoundsChangedCountAndReset() {
 132     return Resetter<int>(&bounds_changed_count_).value();
 133   }
 134
 135   int64 GetRotationChangedCountAndReset() {
 136     return Resetter<int>(&rotation_changed_count_).value();
 137   }
 138
 139   int64 GetWorkareaChangedCountAndReset() {
 140     return Resetter<int>(&workarea_changed_count_).value();
 141   }
 142
 143   int64 GetPrimaryChangedCountAndReset() {
 144     return Resetter<int>(&primary_changed_count_).value();
 145   }
 146
 147   int64 GetChangedDisplayIdAndReset() {
 148     return Resetter<int64>(&changed_display_id_).value();
 149   }
 150
 151   int GetFocusChangedCountAndReset() {
 152     return Resetter<int>(&focus_changed_count_).value();
 153   }
 154
 155   int GetActivationChangedCountAndReset() {
 156     return Resetter<int>(&activation_changed_count_).value();
 157   }
 158
 159  private:
 160   int changing_count_;
 161   int changed_count_;
 162
 163   int bounds_changed_count_;
 164   int rotation_changed_count_;
 165   int workarea_changed_count_;
 166   int primary_changed_count_;
 167   int64 changed_display_id_;
 168
 169   int focus_changed_count_;
 170   int activation_changed_count_;
 171
 172   DISALLOW_COPY_AND_ASSIGN(TestObserver);
 173 };
 174
 175 gfx::Display GetPrimaryDisplay() {
 176   return Shell::GetScreen()->GetDisplayNearestWindow(
 177       Shell::GetAllRootWindows()[0]);
 178 }
 179
 180 gfx::Display GetSecondaryDisplay() {
 181   return Shell::GetScreen()->GetDisplayNearestWindow(
 182       Shell::GetAllRootWindows()[1]);
 183 }
 184
 185 void SetSecondaryDisplayLayoutAndOffset(DisplayLayout::Position position,
 186                                         int offset) {
 187   DisplayLayout layout(position, offset);
 188   ASSERT_GT(Shell::GetScreen()->GetNumDisplays(), 1);
 189   Shell::GetInstance()->display_manager()->SetLayoutForCurrentDisplays(layout);
 190 }
 191
 192 void SetSecondaryDisplayLayout(DisplayLayout::Position position) {
 193   SetSecondaryDisplayLayoutAndOffset(position, 0);
 194 }
 195
 196 void SetDefaultDisplayLayout(DisplayLayout::Position position) {
 197   Shell::GetInstance()
 198       ->display_manager()
 199       ->layout_store()
 200       ->SetDefaultDisplayLayout(DisplayLayout(position, 0));
 201 }
 202
 203 class WindowTreeHostManagerShutdownTest : public test::AshTestBase {
 204  public:
 205   WindowTreeHostManagerShutdownTest() {}
 206   ~WindowTreeHostManagerShutdownTest() override {}
 207
 208   void TearDown() override {
 209     test::AshTestBase::TearDown();
 210     if (!SupportsMultipleDisplays())
 211       return;
 212
 213     // Make sure that primary display is accessible after shutdown.
 214     gfx::Display primary = Shell::GetScreen()->GetPrimaryDisplay();
 215     EXPECT_EQ("0,0 444x333", primary.bounds().ToString());
 216     EXPECT_EQ(2, Shell::GetScreen()->GetNumDisplays());
 217   }
 218
 219  private:
 220   DISALLOW_COPY_AND_ASSIGN(WindowTreeHostManagerShutdownTest);
 221 };
 222
 223 class StartupHelper : public test::TestShellDelegate,
 224                       public WindowTreeHostManager::Observer {
 225  public:
 226   StartupHelper() : displays_initialized_(false) {}
 227   ~StartupHelper() override {}
 228
 229   // ash::ShellSelegate:
 230   void PreInit() override {
 231     Shell::GetInstance()->window_tree_host_manager()->AddObserver(this);
 232   }
 233
 234   // ash::WindowTreeHostManager::Observer:
 235   void OnDisplaysInitialized() override {
 236     DCHECK(!displays_initialized_);
 237     displays_initialized_ = true;
 238   }
 239
 240   bool displays_initialized() const { return displays_initialized_; }
 241
 242  private:
 243   bool displays_initialized_;
 244
 245   DISALLOW_COPY_AND_ASSIGN(StartupHelper);
 246 };
 247
 248 class WindowTreeHostManagerStartupTest : public test::AshTestBase {
 249  public:
 250   WindowTreeHostManagerStartupTest() : startup_helper_(new StartupHelper) {}
 251   ~WindowTreeHostManagerStartupTest() override {}
 252
 253   // ash::test::AshTestBase:
 254   void SetUp() override {
 255     ash_test_helper()->set_test_shell_delegate(startup_helper_);
 256     test::AshTestBase::SetUp();
 257   }
 258   void TearDown() override {
 259     Shell::GetInstance()->window_tree_host_manager()->RemoveObserver(
 260         startup_helper_);
 261     test::AshTestBase::TearDown();
 262   }
 263
 264   const StartupHelper* startup_helper() const { return startup_helper_; }
 265
 266  private:
 267   StartupHelper* startup_helper_;  // Owned by ash::Shell.
 268
 269   DISALLOW_COPY_AND_ASSIGN(WindowTreeHostManagerStartupTest);
 270 };
 271
 272 class TestEventHandler : public ui::EventHandler {
 273  public:
 274   TestEventHandler()
 275       : target_root_(NULL),
 276         touch_radius_x_(0.0),
 277         touch_radius_y_(0.0),
 278         scroll_x_offset_(0.0),
 279         scroll_y_offset_(0.0),
 280         scroll_x_offset_ordinal_(0.0),
 281         scroll_y_offset_ordinal_(0.0) {}
 282   ~TestEventHandler() override {}
 283
 284   void OnMouseEvent(ui::MouseEvent* event) override {
 285     if (event->flags() & ui::EF_IS_SYNTHESIZED &&
 286         event->type() != ui::ET_MOUSE_EXITED &&
 287         event->type() != ui::ET_MOUSE_ENTERED) {
 288       return;
 289     }
 290     aura::Window* target = static_cast<aura::Window*>(event->target());
 291     mouse_location_ = event->root_location();
 292     target_root_ = target->GetRootWindow();
 293     event->StopPropagation();
 294   }
 295
 296   void OnTouchEvent(ui::TouchEvent* event) override {
 297     aura::Window* target = static_cast<aura::Window*>(event->target());
 298     // Only record when the target is the background which covers
 299     // entire root window.
 300     if (target->name() != kDesktopBackgroundView)
 301       return;
 302     touch_radius_x_ = event->pointer_details().radius_x();
 303     touch_radius_y_ = event->pointer_details().radius_y();
 304     event->StopPropagation();
 305   }
 306
 307   void OnScrollEvent(ui::ScrollEvent* event) override {
 308     aura::Window* target = static_cast<aura::Window*>(event->target());
 309     // Only record when the target is the background which covers
 310     // entire root window.
 311     if (target->name() != kDesktopBackgroundView)
 312       return;
 313
 314     if (event->type() == ui::ET_SCROLL) {
 315       scroll_x_offset_ = event->x_offset();
 316       scroll_y_offset_ = event->y_offset();
 317       scroll_x_offset_ordinal_ = event->x_offset_ordinal();
 318       scroll_y_offset_ordinal_ = event->y_offset_ordinal();
 319     }
 320     event->StopPropagation();
 321   }
 322
 323   std::string GetLocationAndReset() {
 324     std::string result = mouse_location_.ToString();
 325     mouse_location_.SetPoint(0, 0);
 326     target_root_ = NULL;
 327     return result;
 328   }
 329
 330   float touch_radius_x() { return touch_radius_x_; }
 331   float touch_radius_y() { return touch_radius_y_; }
 332   float scroll_x_offset() { return scroll_x_offset_; }
 333   float scroll_y_offset() { return scroll_y_offset_; }
 334   float scroll_x_offset_ordinal() { return scroll_x_offset_ordinal_; }
 335   float scroll_y_offset_ordinal() { return scroll_y_offset_ordinal_; }
 336
 337  private:
 338   gfx::Point mouse_location_;
 339   aura::Window* target_root_;
 340
 341   float touch_radius_x_;
 342   float touch_radius_y_;
 343   float scroll_x_offset_;
 344   float scroll_y_offset_;
 345   float scroll_x_offset_ordinal_;
 346   float scroll_y_offset_ordinal_;
 347
 348   DISALLOW_COPY_AND_ASSIGN(TestEventHandler);
 349 };
 350
 351 float GetStoredUIScale(int64 id) {
 352   return Shell::GetInstance()
 353       ->display_manager()
 354       ->GetDisplayInfo(id)
 355       .GetEffectiveUIScale();
 356 }
 357
 358 class TestMouseWatcherListener : public views::MouseWatcherListener {
 359  public:
 360   TestMouseWatcherListener() {}
 361
 362  private:
 363   // views::MouseWatcherListener:
 364   void MouseMovedOutOfHost() override {}
 365
 366   DISALLOW_COPY_AND_ASSIGN(TestMouseWatcherListener);
 367 };
 368
 369 }  // namespace
 370
 371 typedef test::AshTestBase WindowTreeHostManagerTest;
 372
 373 TEST_F(WindowTreeHostManagerShutdownTest, Shutdown) {
 374   if (!SupportsMultipleDisplays())
 375     return;
 376
 377   UpdateDisplay("444x333, 200x200");
 378 }
 379
 380 TEST_F(WindowTreeHostManagerStartupTest, Startup) {
 381   if (!SupportsMultipleDisplays())
 382     return;
 383
 384   EXPECT_TRUE(startup_helper()->displays_initialized());
 385 }
 386
 387 TEST_F(WindowTreeHostManagerTest, SecondaryDisplayLayout) {
 388   if (!SupportsMultipleDisplays())
 389     return;
 390
 391   // Creates windows to catch activation change event.
 392   scoped_ptr<aura::Window> w1(CreateTestWindowInShellWithId(1));
 393   w1->Focus();
 394
 395   TestObserver observer;
 396   UpdateDisplay("500x500,400x400");
 397   EXPECT_EQ(1, observer.CountAndReset());  // resize and add
 398   EXPECT_EQ(1, observer.GetBoundsChangedCountAndReset());
 399   EXPECT_EQ(1, observer.GetWorkareaChangedCountAndReset());
 400   EXPECT_EQ(0, observer.GetFocusChangedCountAndReset());
 401   EXPECT_EQ(0, observer.GetActivationChangedCountAndReset());
 402   gfx::Insets insets(5, 5, 5, 5);
 403   int64 secondary_display_id = ScreenUtil::GetSecondaryDisplay().id();
 404   Shell::GetInstance()->display_manager()->UpdateWorkAreaOfDisplay(
 405       secondary_display_id, insets);
 406
 407   // Default layout is RIGHT.
 408   EXPECT_EQ("0,0 500x500", GetPrimaryDisplay().bounds().ToString());
 409   EXPECT_EQ("500,0 400x400", GetSecondaryDisplay().bounds().ToString());
 410   EXPECT_EQ("505,5 390x390", GetSecondaryDisplay().work_area().ToString());
 411   EXPECT_EQ(0, observer.GetFocusChangedCountAndReset());
 412   EXPECT_EQ(0, observer.GetActivationChangedCountAndReset());
 413
 414   // Layout the secondary display to the bottom of the primary.
 415   SetSecondaryDisplayLayout(DisplayLayout::BOTTOM);
 416   EXPECT_EQ(1, observer.CountAndReset());
 417   EXPECT_EQ(1, observer.GetBoundsChangedCountAndReset());
 418   EXPECT_EQ(1, observer.GetWorkareaChangedCountAndReset());
 419   EXPECT_EQ(0, observer.GetFocusChangedCountAndReset());
 420   EXPECT_EQ(0, observer.GetActivationChangedCountAndReset());
 421   EXPECT_EQ(secondary_display_id, observer.GetChangedDisplayIdAndReset());
 422   EXPECT_EQ("0,0 500x500", GetPrimaryDisplay().bounds().ToString());
 423   EXPECT_EQ("0,500 400x400", GetSecondaryDisplay().bounds().ToString());
 424   EXPECT_EQ("5,505 390x390", GetSecondaryDisplay().work_area().ToString());
 425
 426   // Layout the secondary display to the left of the primary.
 427   SetSecondaryDisplayLayout(DisplayLayout::LEFT);
 428   EXPECT_EQ(1, observer.CountAndReset());
 429   EXPECT_EQ(1, observer.GetBoundsChangedCountAndReset());
 430   EXPECT_EQ(1, observer.GetWorkareaChangedCountAndReset());
 431   EXPECT_EQ(0, observer.GetFocusChangedCountAndReset());
 432   EXPECT_EQ(0, observer.GetActivationChangedCountAndReset());
 433   EXPECT_EQ(secondary_display_id, observer.GetChangedDisplayIdAndReset());
 434   EXPECT_EQ("0,0 500x500", GetPrimaryDisplay().bounds().ToString());
 435   EXPECT_EQ("-400,0 400x400", GetSecondaryDisplay().bounds().ToString());
 436   EXPECT_EQ("-395,5 390x390", GetSecondaryDisplay().work_area().ToString());
 437
 438   // Layout the secondary display to the top of the primary.
 439   SetSecondaryDisplayLayout(DisplayLayout::TOP);
 440   EXPECT_EQ(1, observer.CountAndReset());
 441   EXPECT_EQ(1, observer.GetBoundsChangedCountAndReset());
 442   EXPECT_EQ(1, observer.GetWorkareaChangedCountAndReset());
 443   EXPECT_EQ(0, observer.GetFocusChangedCountAndReset());
 444   EXPECT_EQ(0, observer.GetActivationChangedCountAndReset());
 445   EXPECT_EQ(secondary_display_id, observer.GetChangedDisplayIdAndReset());
 446   EXPECT_EQ("0,0 500x500", GetPrimaryDisplay().bounds().ToString());
 447   EXPECT_EQ("0,-400 400x400", GetSecondaryDisplay().bounds().ToString());
 448   EXPECT_EQ("5,-395 390x390", GetSecondaryDisplay().work_area().ToString());
 449
 450   // Layout to the right with an offset.
 451   SetSecondaryDisplayLayoutAndOffset(DisplayLayout::RIGHT, 300);
 452   EXPECT_EQ(1, observer.CountAndReset());  // resize and add
 453   EXPECT_EQ(1, observer.GetBoundsChangedCountAndReset());
 454   EXPECT_EQ(1, observer.GetWorkareaChangedCountAndReset());
 455   EXPECT_EQ(0, observer.GetFocusChangedCountAndReset());
 456   EXPECT_EQ(0, observer.GetActivationChangedCountAndReset());
 457   EXPECT_EQ(secondary_display_id, observer.GetChangedDisplayIdAndReset());
 458   EXPECT_EQ("0,0 500x500", GetPrimaryDisplay().bounds().ToString());
 459   EXPECT_EQ("500,300 400x400", GetSecondaryDisplay().bounds().ToString());
 460
 461   // Keep the minimum 100.
 462   SetSecondaryDisplayLayoutAndOffset(DisplayLayout::RIGHT, 490);
 463   EXPECT_EQ(1, observer.CountAndReset());  // resize and add
 464   EXPECT_EQ(1, observer.GetBoundsChangedCountAndReset());
 465   EXPECT_EQ(1, observer.GetWorkareaChangedCountAndReset());
 466   EXPECT_EQ(0, observer.GetFocusChangedCountAndReset());
 467   EXPECT_EQ(0, observer.GetActivationChangedCountAndReset());
 468   EXPECT_EQ(secondary_display_id, observer.GetChangedDisplayIdAndReset());
 469   EXPECT_EQ("0,0 500x500", GetPrimaryDisplay().bounds().ToString());
 470   EXPECT_EQ("500,400 400x400", GetSecondaryDisplay().bounds().ToString());
 471
 472   SetSecondaryDisplayLayoutAndOffset(DisplayLayout::RIGHT, -400);
 473   EXPECT_EQ(secondary_display_id, observer.GetChangedDisplayIdAndReset());
 474   EXPECT_EQ(1, observer.GetBoundsChangedCountAndReset());
 475   EXPECT_EQ(1, observer.GetWorkareaChangedCountAndReset());
 476   EXPECT_EQ(1, observer.CountAndReset());  // resize and add
 477   EXPECT_EQ(0, observer.GetFocusChangedCountAndReset());
 478   EXPECT_EQ(0, observer.GetActivationChangedCountAndReset());
 479   EXPECT_EQ("0,0 500x500", GetPrimaryDisplay().bounds().ToString());
 480   EXPECT_EQ("500,-300 400x400", GetSecondaryDisplay().bounds().ToString());
 481
 482   //  Layout to the bottom with an offset.
 483   SetSecondaryDisplayLayoutAndOffset(DisplayLayout::BOTTOM, -200);
 484   EXPECT_EQ(secondary_display_id, observer.GetChangedDisplayIdAndReset());
 485   EXPECT_EQ(1, observer.GetBoundsChangedCountAndReset());
 486   EXPECT_EQ(1, observer.GetWorkareaChangedCountAndReset());
 487   EXPECT_EQ(1, observer.CountAndReset());  // resize and add
 488   EXPECT_EQ(0, observer.GetFocusChangedCountAndReset());
 489   EXPECT_EQ(0, observer.GetActivationChangedCountAndReset());
 490   EXPECT_EQ("0,0 500x500", GetPrimaryDisplay().bounds().ToString());
 491   EXPECT_EQ("-200,500 400x400", GetSecondaryDisplay().bounds().ToString());
 492
 493   // Keep the minimum 100.
 494   SetSecondaryDisplayLayoutAndOffset(DisplayLayout::BOTTOM, 490);
 495   EXPECT_EQ(secondary_display_id, observer.GetChangedDisplayIdAndReset());
 496   EXPECT_EQ(1, observer.GetBoundsChangedCountAndReset());
 497   EXPECT_EQ(1, observer.GetWorkareaChangedCountAndReset());
 498   EXPECT_EQ(1, observer.CountAndReset());  // resize and add
 499   EXPECT_EQ(0, observer.GetFocusChangedCountAndReset());
 500   EXPECT_EQ(0, observer.GetActivationChangedCountAndReset());
 501   EXPECT_EQ("0,0 500x500", GetPrimaryDisplay().bounds().ToString());
 502   EXPECT_EQ("400,500 400x400", GetSecondaryDisplay().bounds().ToString());
 503
 504   SetSecondaryDisplayLayoutAndOffset(DisplayLayout::BOTTOM, -400);
 505   EXPECT_EQ(secondary_display_id, observer.GetChangedDisplayIdAndReset());
 506   EXPECT_EQ(1, observer.GetBoundsChangedCountAndReset());
 507   EXPECT_EQ(1, observer.GetWorkareaChangedCountAndReset());
 508   EXPECT_EQ(1, observer.CountAndReset());  // resize and add
 509   EXPECT_EQ(0, observer.GetFocusChangedCountAndReset());
 510   EXPECT_EQ(0, observer.GetActivationChangedCountAndReset());
 511   EXPECT_EQ("0,0 500x500", GetPrimaryDisplay().bounds().ToString());
 512   EXPECT_EQ("-300,500 400x400", GetSecondaryDisplay().bounds().ToString());
 513
 514   // Setting the same layout shouldn't invoke observers.
 515   SetSecondaryDisplayLayoutAndOffset(DisplayLayout::BOTTOM, -400);
 516   EXPECT_EQ(0, observer.GetChangedDisplayIdAndReset());
 517   EXPECT_EQ(0, observer.GetBoundsChangedCountAndReset());
 518   EXPECT_EQ(0, observer.GetWorkareaChangedCountAndReset());
 519   EXPECT_EQ(0, observer.CountAndReset());  // resize and add
 520   EXPECT_EQ(0, observer.GetFocusChangedCountAndReset());
 521   EXPECT_EQ(0, observer.GetActivationChangedCountAndReset());
 522   EXPECT_EQ("0,0 500x500", GetPrimaryDisplay().bounds().ToString());
 523   EXPECT_EQ("-300,500 400x400", GetSecondaryDisplay().bounds().ToString());
 524
 525   UpdateDisplay("500x500");
 526   EXPECT_LE(1, observer.GetFocusChangedCountAndReset());
 527   EXPECT_LE(1, observer.GetActivationChangedCountAndReset());
 528 }
 529
 530 namespace {
 531
 532 DisplayInfo CreateDisplayInfo(int64 id,
 533                               int y,
 534                               gfx::Display::Rotation rotation) {
 535   DisplayInfo info(id, "", false);
 536   info.SetBounds(gfx::Rect(0, y, 500, 500));
 537   info.SetRotation(rotation, gfx::Display::ROTATION_SOURCE_ACTIVE);
 538   return info;
 539 }
 540
 541 DisplayInfo CreateMirroredDisplayInfo(int64 id, float device_scale_factor) {
 542   DisplayInfo info = CreateDisplayInfo(id, 0, gfx::Display::ROTATE_0);
 543   info.set_device_scale_factor(device_scale_factor);
 544   return info;
 545 }
 546
 547 }  // namespace
 548
 549 TEST_F(WindowTreeHostManagerTest, MirrorToDockedWithFullscreen) {
 550   if (!SupportsMultipleDisplays())
 551     return;
 552
 553   // Creates windows to catch activation change event.
 554   scoped_ptr<aura::Window> w1(CreateTestWindowInShellWithId(1));
 555   w1->Focus();
 556
 557   // Docked mode.
 558   DisplayManager* display_manager = Shell::GetInstance()->display_manager();
 559
 560   const DisplayInfo internal_display_info = CreateMirroredDisplayInfo(1, 2.0f);
 561   const DisplayInfo external_display_info = CreateMirroredDisplayInfo(2, 1.0f);
 562
 563   std::vector<DisplayInfo> display_info_list;
 564   // Mirror.
 565   display_info_list.push_back(internal_display_info);
 566   display_info_list.push_back(external_display_info);
 567   display_manager->OnNativeDisplaysChanged(display_info_list);
 568   const int64 internal_display_id =
 569       test::DisplayManagerTestApi().SetFirstDisplayAsInternalDisplay();
 570   EXPECT_EQ(1, internal_display_id);
 571   EXPECT_EQ(2U, display_manager->num_connected_displays());
 572   EXPECT_EQ(1U, display_manager->GetNumDisplays());
 573
 574   wm::WindowState* window_state = wm::GetWindowState(w1.get());
 575   const wm::WMEvent toggle_fullscreen_event(wm::WM_EVENT_TOGGLE_FULLSCREEN);
 576   window_state->OnWMEvent(&toggle_fullscreen_event);
 577   EXPECT_TRUE(window_state->IsFullscreen());
 578   EXPECT_EQ("0,0 250x250", w1->bounds().ToString());
 579   // Dock mode.
 580   TestObserver observer;
 581   display_info_list.clear();
 582   display_info_list.push_back(external_display_info);
 583   display_manager->OnNativeDisplaysChanged(display_info_list);
 584   EXPECT_EQ(1U, display_manager->GetNumDisplays());
 585   EXPECT_EQ(1U, display_manager->num_connected_displays());
 586   // Observers are called due to primary change.
 587   EXPECT_EQ(2, observer.GetChangedDisplayIdAndReset());
 588   EXPECT_EQ(1, observer.GetBoundsChangedCountAndReset());
 589   EXPECT_EQ(1, observer.GetWorkareaChangedCountAndReset());
 590   EXPECT_EQ(1, observer.GetPrimaryChangedCountAndReset());
 591   EXPECT_EQ(1, observer.CountAndReset());
 592   EXPECT_EQ(0, observer.GetFocusChangedCountAndReset());
 593   EXPECT_EQ(0, observer.GetActivationChangedCountAndReset());
 594
 595   EXPECT_TRUE(window_state->IsFullscreen());
 596   EXPECT_EQ("0,0 500x500", w1->bounds().ToString());
 597 }
 598
 599 TEST_F(WindowTreeHostManagerTest, BoundsUpdated) {
 600   if (!SupportsMultipleDisplays())
 601     return;
 602
 603   // Creates windows to catch activation change event.
 604   scoped_ptr<aura::Window> w1(CreateTestWindowInShellWithId(1));
 605   w1->Focus();
 606
 607   TestObserver observer;
 608   SetDefaultDisplayLayout(DisplayLayout::BOTTOM);
 609   UpdateDisplay("200x200,300x300");  // layout, resize and add.
 610   EXPECT_EQ(1, observer.CountAndReset());
 611   EXPECT_EQ(0, observer.GetFocusChangedCountAndReset());
 612   EXPECT_EQ(0, observer.GetActivationChangedCountAndReset());
 613
 614   DisplayManager* display_manager = Shell::GetInstance()->display_manager();
 615   gfx::Insets insets(5, 5, 5, 5);
 616   display_manager->UpdateWorkAreaOfDisplay(
 617       ScreenUtil::GetSecondaryDisplay().id(), insets);
 618
 619   EXPECT_EQ("0,0 200x200", GetPrimaryDisplay().bounds().ToString());
 620   EXPECT_EQ("0,200 300x300", GetSecondaryDisplay().bounds().ToString());
 621   EXPECT_EQ("5,205 290x290", GetSecondaryDisplay().work_area().ToString());
 622
 623   UpdateDisplay("400x400,200x200");
 624   EXPECT_EQ(1, observer.CountAndReset());  // two resizes
 625   EXPECT_EQ(0, observer.GetFocusChangedCountAndReset());
 626   EXPECT_EQ(0, observer.GetActivationChangedCountAndReset());
 627   EXPECT_EQ("0,0 400x400", GetPrimaryDisplay().bounds().ToString());
 628   EXPECT_EQ("0,400 200x200", GetSecondaryDisplay().bounds().ToString());
 629
 630   UpdateDisplay("400x400,300x300");
 631   EXPECT_EQ(1, observer.CountAndReset());
 632   EXPECT_EQ(0, observer.GetFocusChangedCountAndReset());
 633   EXPECT_EQ(0, observer.GetActivationChangedCountAndReset());
 634   EXPECT_EQ("0,0 400x400", GetPrimaryDisplay().bounds().ToString());
 635   EXPECT_EQ("0,400 300x300", GetSecondaryDisplay().bounds().ToString());
 636
 637   UpdateDisplay("400x400");
 638   EXPECT_EQ(1, observer.CountAndReset());
 639   EXPECT_LE(1, observer.GetFocusChangedCountAndReset());
 640   EXPECT_LE(1, observer.GetActivationChangedCountAndReset());
 641   EXPECT_EQ("0,0 400x400", GetPrimaryDisplay().bounds().ToString());
 642   EXPECT_EQ(1, Shell::GetScreen()->GetNumDisplays());
 643
 644   UpdateDisplay("400x500*2,300x300");
 645   EXPECT_EQ(1, observer.CountAndReset());
 646   EXPECT_EQ(0, observer.GetFocusChangedCountAndReset());
 647   EXPECT_EQ(0, observer.GetActivationChangedCountAndReset());
 648   ASSERT_EQ(2, Shell::GetScreen()->GetNumDisplays());
 649   EXPECT_EQ("0,0 200x250", GetPrimaryDisplay().bounds().ToString());
 650   EXPECT_EQ("0,250 300x300", GetSecondaryDisplay().bounds().ToString());
 651
 652   // No change
 653   UpdateDisplay("400x500*2,300x300");
 654   // We still call into Pre/PostDisplayConfigurationChange().
 655   EXPECT_EQ(1, observer.CountAndReset());
 656   EXPECT_EQ(0, observer.GetFocusChangedCountAndReset());
 657   EXPECT_EQ(0, observer.GetActivationChangedCountAndReset());
 658
 659   // Rotation
 660   observer.GetRotationChangedCountAndReset();  // we only want to reset.
 661   int64 primary_id = GetPrimaryDisplay().id();
 662   display_manager->SetDisplayRotation(primary_id, gfx::Display::ROTATE_90,
 663                                       gfx::Display::ROTATION_SOURCE_ACTIVE);
 664   EXPECT_EQ(1, observer.GetRotationChangedCountAndReset());
 665   EXPECT_EQ(1, observer.CountAndReset());
 666   EXPECT_EQ(0, observer.GetFocusChangedCountAndReset());
 667   EXPECT_EQ(0, observer.GetActivationChangedCountAndReset());
 668   display_manager->SetDisplayRotation(primary_id, gfx::Display::ROTATE_90,
 669                                       gfx::Display::ROTATION_SOURCE_ACTIVE);
 670   EXPECT_EQ(0, observer.GetRotationChangedCountAndReset());
 671   EXPECT_EQ(0, observer.CountAndReset());
 672   EXPECT_EQ(0, observer.GetFocusChangedCountAndReset());
 673   EXPECT_EQ(0, observer.GetActivationChangedCountAndReset());
 674
 675   // UI scale is eanbled only on internal display.
 676   int64 secondary_id = GetSecondaryDisplay().id();
 677   test::ScopedSetInternalDisplayId set_internal(secondary_id);
 678   // Changing internal ID display changes the DisplayIdPair (it comes
 679   // first), which also changes the primary display candidate.  Update
 680   // the primary display manually to update the primary display to
 681   // avoid getting the OnDisplayConfigurationChanged() call twice in
 682   // SetDisplayUIScale. Note that this scenario will never happen on
 683   // real devices.
 684   Shell::GetInstance()->window_tree_host_manager()->SetPrimaryDisplayId(
 685       secondary_id);
 686   EXPECT_EQ(1, observer.CountAndReset());
 687
 688   SetDisplayUIScale(secondary_id, 1.125f);
 689   EXPECT_EQ(1, observer.CountAndReset());
 690   EXPECT_EQ(0, observer.GetFocusChangedCountAndReset());
 691   EXPECT_EQ(0, observer.GetActivationChangedCountAndReset());
 692   SetDisplayUIScale(secondary_id, 1.125f);
 693   EXPECT_EQ(0, observer.CountAndReset());
 694   EXPECT_EQ(0, observer.GetFocusChangedCountAndReset());
 695   EXPECT_EQ(0, observer.GetActivationChangedCountAndReset());
 696   SetDisplayUIScale(primary_id, 1.125f);
 697   EXPECT_EQ(0, observer.CountAndReset());
 698   EXPECT_EQ(0, observer.GetFocusChangedCountAndReset());
 699   EXPECT_EQ(0, observer.GetActivationChangedCountAndReset());
 700   SetDisplayUIScale(primary_id, 1.125f);
 701   EXPECT_EQ(0, observer.CountAndReset());
 702   EXPECT_EQ(0, observer.GetFocusChangedCountAndReset());
 703   EXPECT_EQ(0, observer.GetActivationChangedCountAndReset());
 704 }
 705
 706 TEST_F(WindowTreeHostManagerTest, SwapPrimary) {
 707   if (!SupportsMultipleDisplays())
 708     return;
 709
 710   WindowTreeHostManager* window_tree_host_manager =
 711       Shell::GetInstance()->window_tree_host_manager();
 712   DisplayManager* display_manager = Shell::GetInstance()->display_manager();
 713
 714   UpdateDisplay("200x200,300x300");
 715   gfx::Display primary_display = Shell::GetScreen()->GetPrimaryDisplay();
 716   gfx::Display secondary_display = ScreenUtil::GetSecondaryDisplay();
 717
 718   DisplayLayout display_layout(DisplayLayout::RIGHT, 50);
 719   display_manager->SetLayoutForCurrentDisplays(display_layout);
 720
 721   EXPECT_NE(primary_display.id(), secondary_display.id());
 722   aura::Window* primary_root =
 723       window_tree_host_manager->GetRootWindowForDisplayId(primary_display.id());
 724   aura::Window* secondary_root =
 725       window_tree_host_manager->GetRootWindowForDisplayId(
 726           secondary_display.id());
 727   EXPECT_NE(primary_root, secondary_root);
 728   aura::Window* shelf_window =
 729       Shelf::ForPrimaryDisplay()->shelf_widget()->GetNativeView();
 730   EXPECT_TRUE(primary_root->Contains(shelf_window));
 731   EXPECT_FALSE(secondary_root->Contains(shelf_window));
 732   EXPECT_EQ(
 733       primary_display.id(),
 734       Shell::GetScreen()->GetDisplayNearestPoint(gfx::Point(-100, -100)).id());
 735   EXPECT_EQ(primary_display.id(),
 736             Shell::GetScreen()->GetDisplayNearestWindow(NULL).id());
 737
 738   EXPECT_EQ("0,0 200x200", primary_display.bounds().ToString());
 739   EXPECT_EQ("0,0 200x153", primary_display.work_area().ToString());
 740   EXPECT_EQ("200,0 300x300", secondary_display.bounds().ToString());
 741   EXPECT_EQ("200,0 300x253", secondary_display.work_area().ToString());
 742   EXPECT_EQ("right, 50", display_manager->GetCurrentDisplayLayout().ToString());
 743
 744   // Switch primary and secondary
 745   window_tree_host_manager->SetPrimaryDisplay(secondary_display);
 746   const DisplayLayout& inverted_layout =
 747       display_manager->GetCurrentDisplayLayout();
 748   EXPECT_EQ("left, -50", inverted_layout.ToString());
 749
 750   EXPECT_EQ(secondary_display.id(),
 751             Shell::GetScreen()->GetPrimaryDisplay().id());
 752   EXPECT_EQ(primary_display.id(), ScreenUtil::GetSecondaryDisplay().id());
 753   EXPECT_EQ(
 754       primary_display.id(),
 755       Shell::GetScreen()->GetDisplayNearestPoint(gfx::Point(-100, -100)).id());
 756   EXPECT_EQ(secondary_display.id(),
 757             Shell::GetScreen()->GetDisplayNearestWindow(NULL).id());
 758
 759   EXPECT_EQ(primary_root, window_tree_host_manager->GetRootWindowForDisplayId(
 760                               secondary_display.id()));
 761   EXPECT_EQ(secondary_root, window_tree_host_manager->GetRootWindowForDisplayId(
 762                                 primary_display.id()));
 763   EXPECT_TRUE(primary_root->Contains(shelf_window));
 764   EXPECT_FALSE(secondary_root->Contains(shelf_window));
 765
 766   // Test if the bounds are correctly swapped.
 767   gfx::Display swapped_primary = Shell::GetScreen()->GetPrimaryDisplay();
 768   gfx::Display swapped_secondary = ScreenUtil::GetSecondaryDisplay();
 769   EXPECT_EQ("0,0 300x300", swapped_primary.bounds().ToString());
 770   EXPECT_EQ("0,0 300x253", swapped_primary.work_area().ToString());
 771   EXPECT_EQ("-200,-50 200x200", swapped_secondary.bounds().ToString());
 772
 773   EXPECT_EQ("-200,-50 200x153", swapped_secondary.work_area().ToString());
 774
 775   aura::WindowTracker tracker;
 776   tracker.Add(primary_root);
 777   tracker.Add(secondary_root);
 778
 779   // Deleting 2nd display should move the primary to original primary display.
 780   UpdateDisplay("200x200");
 781   RunAllPendingInMessageLoop();  // RootWindow is deleted in a posted task.
 782   EXPECT_EQ(1, Shell::GetScreen()->GetNumDisplays());
 783   EXPECT_EQ(primary_display.id(), Shell::GetScreen()->GetPrimaryDisplay().id());
 784   EXPECT_EQ(
 785       primary_display.id(),
 786       Shell::GetScreen()->GetDisplayNearestPoint(gfx::Point(-100, -100)).id());
 787   EXPECT_EQ(primary_display.id(),
 788             Shell::GetScreen()->GetDisplayNearestWindow(NULL).id());
 789   EXPECT_TRUE(tracker.Contains(primary_root));
 790   EXPECT_FALSE(tracker.Contains(secondary_root));
 791   EXPECT_TRUE(primary_root->Contains(shelf_window));
 792 }
 793
 794 TEST_F(WindowTreeHostManagerTest, FindNearestDisplay) {
 795   if (!SupportsMultipleDisplays())
 796     return;
 797
 798   WindowTreeHostManager* window_tree_host_manager =
 799       Shell::GetInstance()->window_tree_host_manager();
 800   DisplayManager* display_manager = Shell::GetInstance()->display_manager();
 801
 802   UpdateDisplay("200x200,300x300");
 803   DisplayLayout display_layout(DisplayLayout::RIGHT, 50);
 804   display_manager->SetLayoutForCurrentDisplays(display_layout);
 805
 806   gfx::Display primary_display = Shell::GetScreen()->GetPrimaryDisplay();
 807   gfx::Display secondary_display = ScreenUtil::GetSecondaryDisplay();
 808   EXPECT_NE(primary_display.id(), secondary_display.id());
 809   aura::Window* primary_root =
 810       window_tree_host_manager->GetRootWindowForDisplayId(primary_display.id());
 811   aura::Window* secondary_root =
 812       window_tree_host_manager->GetRootWindowForDisplayId(
 813           secondary_display.id());
 814   EXPECT_NE(primary_root, secondary_root);
 815
 816   // Test that points outside of any display return the nearest display.
 817   EXPECT_EQ(
 818       primary_display.id(),
 819       Shell::GetScreen()->GetDisplayNearestPoint(gfx::Point(-100, 0)).id());
 820   EXPECT_EQ(
 821       primary_display.id(),
 822       Shell::GetScreen()->GetDisplayNearestPoint(gfx::Point(0, -100)).id());
 823   EXPECT_EQ(
 824       primary_display.id(),
 825       Shell::GetScreen()->GetDisplayNearestPoint(gfx::Point(100, 100)).id());
 826   EXPECT_EQ(
 827       primary_display.id(),
 828       Shell::GetScreen()->GetDisplayNearestPoint(gfx::Point(224, 25)).id());
 829   EXPECT_EQ(
 830       secondary_display.id(),
 831       Shell::GetScreen()->GetDisplayNearestPoint(gfx::Point(226, 25)).id());
 832   EXPECT_EQ(
 833       secondary_display.id(),
 834       Shell::GetScreen()->GetDisplayNearestPoint(gfx::Point(600, 100)).id());
 835   EXPECT_EQ(
 836       primary_display.id(),
 837       Shell::GetScreen()->GetDisplayNearestPoint(gfx::Point(174, 225)).id());
 838   EXPECT_EQ(
 839       secondary_display.id(),
 840       Shell::GetScreen()->GetDisplayNearestPoint(gfx::Point(176, 225)).id());
 841   EXPECT_EQ(
 842       secondary_display.id(),
 843       Shell::GetScreen()->GetDisplayNearestPoint(gfx::Point(300, 400)).id());
 844 }
 845
 846 TEST_F(WindowTreeHostManagerTest, SwapPrimaryById) {
 847   if (!SupportsMultipleDisplays())
 848     return;
 849
 850   WindowTreeHostManager* window_tree_host_manager =
 851       Shell::GetInstance()->window_tree_host_manager();
 852   DisplayManager* display_manager = Shell::GetInstance()->display_manager();
 853
 854   UpdateDisplay("200x200,300x300");
 855   gfx::Display primary_display = Shell::GetScreen()->GetPrimaryDisplay();
 856   gfx::Display secondary_display = ScreenUtil::GetSecondaryDisplay();
 857
 858   DisplayLayout display_layout(DisplayLayout::RIGHT, 50);
 859   display_manager->SetLayoutForCurrentDisplays(display_layout);
 860
 861   EXPECT_NE(primary_display.id(), secondary_display.id());
 862   aura::Window* primary_root =
 863       window_tree_host_manager->GetRootWindowForDisplayId(primary_display.id());
 864   aura::Window* secondary_root =
 865       window_tree_host_manager->GetRootWindowForDisplayId(
 866           secondary_display.id());
 867   aura::Window* shelf_window =
 868       Shelf::ForPrimaryDisplay()->shelf_widget()->GetNativeView();
 869   EXPECT_TRUE(primary_root->Contains(shelf_window));
 870   EXPECT_FALSE(secondary_root->Contains(shelf_window));
 871   EXPECT_NE(primary_root, secondary_root);
 872   EXPECT_EQ(
 873       primary_display.id(),
 874       Shell::GetScreen()->GetDisplayNearestPoint(gfx::Point(-100, -100)).id());
 875   EXPECT_EQ(primary_display.id(),
 876             Shell::GetScreen()->GetDisplayNearestWindow(NULL).id());
 877
 878   // Switch primary and secondary by display ID.
 879   TestObserver observer;
 880   window_tree_host_manager->SetPrimaryDisplayId(secondary_display.id());
 881   EXPECT_EQ(secondary_display.id(),
 882             Shell::GetScreen()->GetPrimaryDisplay().id());
 883   EXPECT_EQ(primary_display.id(), ScreenUtil::GetSecondaryDisplay().id());
 884   EXPECT_LT(0, observer.CountAndReset());
 885
 886   EXPECT_EQ(primary_root, window_tree_host_manager->GetRootWindowForDisplayId(
 887                               secondary_display.id()));
 888   EXPECT_EQ(secondary_root, window_tree_host_manager->GetRootWindowForDisplayId(
 889                                 primary_display.id()));
 890   EXPECT_TRUE(primary_root->Contains(shelf_window));
 891   EXPECT_FALSE(secondary_root->Contains(shelf_window));
 892
 893   const DisplayLayout& inverted_layout =
 894       display_manager->GetCurrentDisplayLayout();
 895
 896   EXPECT_EQ("left, -50", inverted_layout.ToString());
 897
 898   // Calling the same ID don't do anything.
 899   window_tree_host_manager->SetPrimaryDisplayId(secondary_display.id());
 900   EXPECT_EQ(0, observer.CountAndReset());
 901
 902   aura::WindowTracker tracker;
 903   tracker.Add(primary_root);
 904   tracker.Add(secondary_root);
 905
 906   // Deleting 2nd display should move the primary to original primary display.
 907   UpdateDisplay("200x200");
 908   RunAllPendingInMessageLoop();  // RootWindow is deleted in a posted task.
 909   EXPECT_EQ(1, Shell::GetScreen()->GetNumDisplays());
 910   EXPECT_EQ(primary_display.id(), Shell::GetScreen()->GetPrimaryDisplay().id());
 911   EXPECT_EQ(
 912       primary_display.id(),
 913       Shell::GetScreen()->GetDisplayNearestPoint(gfx::Point(-100, -100)).id());
 914   EXPECT_EQ(primary_display.id(),
 915             Shell::GetScreen()->GetDisplayNearestWindow(NULL).id());
 916   EXPECT_TRUE(tracker.Contains(primary_root));
 917   EXPECT_FALSE(tracker.Contains(secondary_root));
 918   EXPECT_TRUE(primary_root->Contains(shelf_window));
 919
 920   // Adding 2nd display with the same ID.  The 2nd display should become primary
 921   // since secondary id is still stored as desirable_primary_id.
 922   std::vector<DisplayInfo> display_info_list;
 923   display_info_list.push_back(
 924       display_manager->GetDisplayInfo(primary_display.id()));
 925   display_info_list.push_back(
 926       display_manager->GetDisplayInfo(secondary_display.id()));
 927   display_manager->OnNativeDisplaysChanged(display_info_list);
 928
 929   EXPECT_EQ(2, Shell::GetScreen()->GetNumDisplays());
 930   EXPECT_EQ(secondary_display.id(),
 931             Shell::GetScreen()->GetPrimaryDisplay().id());
 932   EXPECT_EQ(primary_display.id(), ScreenUtil::GetSecondaryDisplay().id());
 933   EXPECT_EQ(primary_root, window_tree_host_manager->GetRootWindowForDisplayId(
 934                               secondary_display.id()));
 935   EXPECT_NE(primary_root, window_tree_host_manager->GetRootWindowForDisplayId(
 936                               primary_display.id()));
 937   EXPECT_TRUE(primary_root->Contains(shelf_window));
 938
 939   // Deleting 2nd display and adding 2nd display with a different ID.  The 2nd
 940   // display shouldn't become primary.
 941   UpdateDisplay("200x200");
 942   DisplayInfo third_display_info(secondary_display.id() + 1, std::string(),
 943                                  false);
 944   third_display_info.SetBounds(secondary_display.bounds());
 945   ASSERT_NE(primary_display.id(), third_display_info.id());
 946
 947   const DisplayInfo& primary_display_info =
 948       display_manager->GetDisplayInfo(primary_display.id());
 949   std::vector<DisplayInfo> display_info_list2;
 950   display_info_list2.push_back(primary_display_info);
 951   display_info_list2.push_back(third_display_info);
 952   display_manager->OnNativeDisplaysChanged(display_info_list2);
 953   EXPECT_EQ(2, Shell::GetScreen()->GetNumDisplays());
 954   EXPECT_EQ(primary_display.id(), Shell::GetScreen()->GetPrimaryDisplay().id());
 955   EXPECT_EQ(third_display_info.id(), ScreenUtil::GetSecondaryDisplay().id());
 956   EXPECT_EQ(primary_root, window_tree_host_manager->GetRootWindowForDisplayId(
 957                               primary_display.id()));
 958   EXPECT_NE(primary_root, window_tree_host_manager->GetRootWindowForDisplayId(
 959                               third_display_info.id()));
 960   EXPECT_TRUE(primary_root->Contains(shelf_window));
 961 }
 962
 963 TEST_F(WindowTreeHostManagerTest, OverscanInsets) {
 964   if (!SupportsMultipleDisplays())
 965     return;
 966
 967   WindowTreeHostManager* window_tree_host_manager =
 968       Shell::GetInstance()->window_tree_host_manager();
 969   TestEventHandler event_handler;
 970   Shell::GetInstance()->AddPreTargetHandler(&event_handler);
 971
 972   UpdateDisplay("120x200,300x400*2");
 973   gfx::Display display1 = Shell::GetScreen()->GetPrimaryDisplay();
 974   aura::Window::Windows root_windows = Shell::GetAllRootWindows();
 975
 976   window_tree_host_manager->SetOverscanInsets(display1.id(),
 977                                               gfx::Insets(10, 15, 20, 25));
 978   EXPECT_EQ("0,0 80x170", root_windows[0]->bounds().ToString());
 979   EXPECT_EQ("150x200", root_windows[1]->bounds().size().ToString());
 980   EXPECT_EQ("80,0 150x200",
 981             ScreenUtil::GetSecondaryDisplay().bounds().ToString());
 982
 983   ui::test::EventGenerator generator(root_windows[0]);
 984   generator.MoveMouseToInHost(20, 25);
 985   EXPECT_EQ("5,15", event_handler.GetLocationAndReset());
 986
 987   window_tree_host_manager->SetOverscanInsets(display1.id(), gfx::Insets());
 988   EXPECT_EQ("0,0 120x200", root_windows[0]->bounds().ToString());
 989   EXPECT_EQ("120,0 150x200",
 990             ScreenUtil::GetSecondaryDisplay().bounds().ToString());
 991
 992   generator.MoveMouseToInHost(30, 20);
 993   EXPECT_EQ("30,20", event_handler.GetLocationAndReset());
 994
 995   // Make sure the root window transformer uses correct scale
 996   // factor when swapping display. Test crbug.com/253690.
 997   UpdateDisplay("400x300*2,600x400/o");
 998   root_windows = Shell::GetAllRootWindows();
 999   gfx::Point point;
1000   Shell::GetAllRootWindows()[1]->GetHost()->GetRootTransform().TransformPoint(
1001       &point);
1002   EXPECT_EQ("15,10", point.ToString());
1003
1004   window_tree_host_manager->SwapPrimaryDisplay();
1005   point.SetPoint(0, 0);
1006   Shell::GetAllRootWindows()[1]->GetHost()->GetRootTransform().TransformPoint(
1007       &point);
1008   EXPECT_EQ("15,10", point.ToString());
1009
1010   Shell::GetInstance()->RemovePreTargetHandler(&event_handler);
1011 }
1012
1013 TEST_F(WindowTreeHostManagerTest, Rotate) {
1014   if (!SupportsMultipleDisplays())
1015     return;
1016
1017   DisplayManager* display_manager = Shell::GetInstance()->display_manager();
1018   TestEventHandler event_handler;
1019   Shell::GetInstance()->AddPreTargetHandler(&event_handler);
1020
1021   UpdateDisplay("120x200,300x400*2");
1022   gfx::Display display1 = Shell::GetScreen()->GetPrimaryDisplay();
1023   int64 display2_id = ScreenUtil::GetSecondaryDisplay().id();
1024   aura::Window::Windows root_windows = Shell::GetAllRootWindows();
1025   ui::test::EventGenerator generator1(root_windows[0]);
1026
1027   TestObserver observer;
1028   EXPECT_EQ("120x200", root_windows[0]->bounds().size().ToString());
1029   EXPECT_EQ("150x200", root_windows[1]->bounds().size().ToString());
1030   EXPECT_EQ("120,0 150x200",
1031             ScreenUtil::GetSecondaryDisplay().bounds().ToString());
1032   generator1.MoveMouseToInHost(50, 40);
1033   EXPECT_EQ("50,40", event_handler.GetLocationAndReset());
1034   EXPECT_EQ(gfx::Display::ROTATE_0, GetActiveDisplayRotation(display1.id()));
1035   EXPECT_EQ(gfx::Display::ROTATE_0, GetActiveDisplayRotation(display2_id));
1036   EXPECT_EQ(0, observer.GetRotationChangedCountAndReset());
1037
1038   display_manager->SetDisplayRotation(display1.id(), gfx::Display::ROTATE_90,
1039                                       gfx::Display::ROTATION_SOURCE_ACTIVE);
1040   EXPECT_EQ("200x120", root_windows[0]->bounds().size().ToString());
1041   EXPECT_EQ("150x200", root_windows[1]->bounds().size().ToString());
1042   EXPECT_EQ("200,0 150x200",
1043             ScreenUtil::GetSecondaryDisplay().bounds().ToString());
1044   generator1.MoveMouseToInHost(50, 40);
1045   EXPECT_EQ("40,69", event_handler.GetLocationAndReset());
1046   EXPECT_EQ(gfx::Display::ROTATE_90, GetActiveDisplayRotation(display1.id()));
1047   EXPECT_EQ(gfx::Display::ROTATE_0, GetActiveDisplayRotation(display2_id));
1048   EXPECT_EQ(1, observer.GetRotationChangedCountAndReset());
1049
1050   DisplayLayout display_layout(DisplayLayout::BOTTOM, 50);
1051   display_manager->SetLayoutForCurrentDisplays(display_layout);
1052   EXPECT_EQ("50,120 150x200",
1053             ScreenUtil::GetSecondaryDisplay().bounds().ToString());
1054
1055   display_manager->SetDisplayRotation(display2_id, gfx::Display::ROTATE_270,
1056                                       gfx::Display::ROTATION_SOURCE_ACTIVE);
1057   EXPECT_EQ("200x120", root_windows[0]->bounds().size().ToString());
1058   EXPECT_EQ("200x150", root_windows[1]->bounds().size().ToString());
1059   EXPECT_EQ("50,120 200x150",
1060             ScreenUtil::GetSecondaryDisplay().bounds().ToString());
1061   EXPECT_EQ(gfx::Display::ROTATE_90, GetActiveDisplayRotation(display1.id()));
1062   EXPECT_EQ(gfx::Display::ROTATE_270, GetActiveDisplayRotation(display2_id));
1063   EXPECT_EQ(1, observer.GetRotationChangedCountAndReset());
1064
1065 #if !defined(OS_WIN)
1066   ui::test::EventGenerator generator2(root_windows[1]);
1067   generator2.MoveMouseToInHost(50, 40);
1068   EXPECT_EQ("179,25", event_handler.GetLocationAndReset());
1069   display_manager->SetDisplayRotation(display1.id(), gfx::Display::ROTATE_180,
1070                                       gfx::Display::ROTATION_SOURCE_ACTIVE);
1071
1072   EXPECT_EQ("120x200", root_windows[0]->bounds().size().ToString());
1073   EXPECT_EQ("200x150", root_windows[1]->bounds().size().ToString());
1074   // Dislay must share at least 100, so the x's offset becomes 20.
1075   EXPECT_EQ("20,200 200x150",
1076             ScreenUtil::GetSecondaryDisplay().bounds().ToString());
1077   EXPECT_EQ(gfx::Display::ROTATE_180, GetActiveDisplayRotation(display1.id()));
1078   EXPECT_EQ(gfx::Display::ROTATE_270, GetActiveDisplayRotation(display2_id));
1079   EXPECT_EQ(1, observer.GetRotationChangedCountAndReset());
1080
1081   generator1.MoveMouseToInHost(50, 40);
1082   EXPECT_EQ("69,159", event_handler.GetLocationAndReset());
1083 #endif
1084
1085   Shell::GetInstance()->RemovePreTargetHandler(&event_handler);
1086 }
1087
1088 TEST_F(WindowTreeHostManagerTest, ScaleRootWindow) {
1089   if (!SupportsMultipleDisplays())
1090     return;
1091
1092   TestEventHandler event_handler;
1093   Shell::GetInstance()->AddPreTargetHandler(&event_handler);
1094
1095   UpdateDisplay("600x400*2@1.5,500x300");
1096
1097   gfx::Display display1 = Shell::GetScreen()->GetPrimaryDisplay();
1098   test::ScopedSetInternalDisplayId set_internal(display1.id());
1099
1100   gfx::Display display2 = ScreenUtil::GetSecondaryDisplay();
1101   aura::Window::Windows root_windows = Shell::GetAllRootWindows();
1102   EXPECT_EQ("0,0 450x300", display1.bounds().ToString());
1103   EXPECT_EQ("0,0 450x300", root_windows[0]->bounds().ToString());
1104   EXPECT_EQ("450,0 500x300", display2.bounds().ToString());
1105   EXPECT_EQ(1.5f, GetStoredUIScale(display1.id()));
1106   EXPECT_EQ(1.0f, GetStoredUIScale(display2.id()));
1107
1108   ui::test::EventGenerator generator(root_windows[0]);
1109   generator.MoveMouseToInHost(599, 200);
1110   EXPECT_EQ("449,150", event_handler.GetLocationAndReset());
1111
1112   SetDisplayUIScale(display1.id(), 1.25f);
1113   display1 = Shell::GetScreen()->GetPrimaryDisplay();
1114   display2 = ScreenUtil::GetSecondaryDisplay();
1115   EXPECT_EQ("0,0 375x250", display1.bounds().ToString());
1116   EXPECT_EQ("0,0 375x250", root_windows[0]->bounds().ToString());
1117   EXPECT_EQ("375,0 500x300", display2.bounds().ToString());
1118   EXPECT_EQ(1.25f, GetStoredUIScale(display1.id()));
1119   EXPECT_EQ(1.0f, GetStoredUIScale(display2.id()));
1120
1121   Shell::GetInstance()->RemovePreTargetHandler(&event_handler);
1122 }
1123
1124 TEST_F(WindowTreeHostManagerTest, TouchScale) {
1125   if (!SupportsMultipleDisplays())
1126     return;
1127
1128   TestEventHandler event_handler;
1129   Shell::GetInstance()->AddPreTargetHandler(&event_handler);
1130
1131   UpdateDisplay("200x200*2");
1132   gfx::Display display = Shell::GetScreen()->GetPrimaryDisplay();
1133   aura::Window::Windows root_windows = Shell::GetAllRootWindows();
1134   aura::Window* root_window = root_windows[0];
1135   ui::test::EventGenerator generator(root_window);
1136
1137   generator.PressMoveAndReleaseTouchTo(50, 50);
1138   // Default test touches have radius_x/y = 1.0, with device scale
1139   // factor = 2, the scaled radius_x/y should be 0.5.
1140   EXPECT_EQ(0.5, event_handler.touch_radius_x());
1141   EXPECT_EQ(0.5, event_handler.touch_radius_y());
1142
1143   generator.ScrollSequence(gfx::Point(0, 0),
1144                            base::TimeDelta::FromMilliseconds(100), 10.0, 1.0, 5,
1145                            1);
1146
1147   // ordinal_offset is invariant to the device scale factor.
1148   EXPECT_EQ(event_handler.scroll_x_offset(),
1149             event_handler.scroll_x_offset_ordinal());
1150   EXPECT_EQ(event_handler.scroll_y_offset(),
1151             event_handler.scroll_y_offset_ordinal());
1152
1153   Shell::GetInstance()->RemovePreTargetHandler(&event_handler);
1154 }
1155
1156 TEST_F(WindowTreeHostManagerTest, ConvertHostToRootCoords) {
1157   if (!SupportsMultipleDisplays())
1158     return;
1159
1160   TestEventHandler event_handler;
1161   Shell::GetInstance()->AddPreTargetHandler(&event_handler);
1162
1163   UpdateDisplay("600x400*2/r@1.5");
1164
1165   gfx::Display display1 = Shell::GetScreen()->GetPrimaryDisplay();
1166   aura::Window::Windows root_windows = Shell::GetAllRootWindows();
1167   EXPECT_EQ("0,0 300x450", display1.bounds().ToString());
1168   EXPECT_EQ("0,0 300x450", root_windows[0]->bounds().ToString());
1169   EXPECT_EQ(1.5f, GetStoredUIScale(display1.id()));
1170
1171   ui::test::EventGenerator generator(root_windows[0]);
1172   generator.MoveMouseToInHost(0, 0);
1173   EXPECT_EQ("0,449", event_handler.GetLocationAndReset());
1174   generator.MoveMouseToInHost(599, 0);
1175   EXPECT_EQ("0,0", event_handler.GetLocationAndReset());
1176   generator.MoveMouseToInHost(599, 399);
1177   EXPECT_EQ("299,0", event_handler.GetLocationAndReset());
1178   generator.MoveMouseToInHost(0, 399);
1179   EXPECT_EQ("299,449", event_handler.GetLocationAndReset());
1180
1181   UpdateDisplay("600x400*2/u@1.5");
1182   display1 = Shell::GetScreen()->GetPrimaryDisplay();
1183   root_windows = Shell::GetAllRootWindows();
1184   EXPECT_EQ("0,0 450x300", display1.bounds().ToString());
1185   EXPECT_EQ("0,0 450x300", root_windows[0]->bounds().ToString());
1186   EXPECT_EQ(1.5f, GetStoredUIScale(display1.id()));
1187
1188   generator.MoveMouseToInHost(0, 0);
1189   EXPECT_EQ("449,299", event_handler.GetLocationAndReset());
1190   generator.MoveMouseToInHost(599, 0);
1191   EXPECT_EQ("0,299", event_handler.GetLocationAndReset());
1192   generator.MoveMouseToInHost(599, 399);
1193   EXPECT_EQ("0,0", event_handler.GetLocationAndReset());
1194   generator.MoveMouseToInHost(0, 399);
1195   EXPECT_EQ("449,0", event_handler.GetLocationAndReset());
1196
1197   UpdateDisplay("600x400*2/l@1.5");
1198   display1 = Shell::GetScreen()->GetPrimaryDisplay();
1199   root_windows = Shell::GetAllRootWindows();
1200   EXPECT_EQ("0,0 300x450", display1.bounds().ToString());
1201   EXPECT_EQ("0,0 300x450", root_windows[0]->bounds().ToString());
1202   EXPECT_EQ(1.5f, GetStoredUIScale(display1.id()));
1203
1204   generator.MoveMouseToInHost(0, 0);
1205   EXPECT_EQ("299,0", event_handler.GetLocationAndReset());
1206   generator.MoveMouseToInHost(599, 0);
1207   EXPECT_EQ("299,449", event_handler.GetLocationAndReset());
1208   generator.MoveMouseToInHost(599, 399);
1209   EXPECT_EQ("0,449", event_handler.GetLocationAndReset());
1210   generator.MoveMouseToInHost(0, 399);
1211   EXPECT_EQ("0,0", event_handler.GetLocationAndReset());
1212
1213   Shell::GetInstance()->RemovePreTargetHandler(&event_handler);
1214 }
1215
1216 // Make sure that the compositor based mirroring can switch
1217 // from/to dock mode.
1218 TEST_F(WindowTreeHostManagerTest, DockToSingle) {
1219   if (!SupportsMultipleDisplays())
1220     return;
1221
1222   DisplayManager* display_manager = Shell::GetInstance()->display_manager();
1223
1224   const int64 internal_id = 1;
1225
1226   const DisplayInfo internal_display_info =
1227       CreateDisplayInfo(internal_id, 0, gfx::Display::ROTATE_0);
1228   const DisplayInfo external_display_info =
1229       CreateDisplayInfo(2, 1, gfx::Display::ROTATE_90);
1230
1231   std::vector<DisplayInfo> display_info_list;
1232   // Extended
1233   display_info_list.push_back(internal_display_info);
1234   display_info_list.push_back(external_display_info);
1235   display_manager->OnNativeDisplaysChanged(display_info_list);
1236   const int64 internal_display_id =
1237       test::DisplayManagerTestApi().SetFirstDisplayAsInternalDisplay();
1238   EXPECT_EQ(internal_id, internal_display_id);
1239   EXPECT_EQ(2U, display_manager->GetNumDisplays());
1240
1241   // Dock mode.
1242   display_info_list.clear();
1243   display_info_list.push_back(external_display_info);
1244   display_manager->OnNativeDisplaysChanged(display_info_list);
1245   EXPECT_EQ(1U, display_manager->GetNumDisplays());
1246   EXPECT_FALSE(Shell::GetPrimaryRootWindow()
1247                    ->GetHost()
1248                    ->GetRootTransform()
1249                    .IsIdentityOrIntegerTranslation());
1250
1251   // Switch to single mode and make sure the transform is the one
1252   // for the internal display.
1253   display_info_list.clear();
1254   display_info_list.push_back(internal_display_info);
1255   display_manager->OnNativeDisplaysChanged(display_info_list);
1256   EXPECT_TRUE(Shell::GetPrimaryRootWindow()
1257                   ->GetHost()
1258                   ->GetRootTransform()
1259                   .IsIdentityOrIntegerTranslation());
1260 }
1261
1262 // Tests if switching two displays at the same time while the primary display
1263 // is swapped should not cause a crash. (crbug.com/426292)
1264 TEST_F(WindowTreeHostManagerTest, ReplaceSwappedPrimary) {
1265   if (!SupportsMultipleDisplays())
1266     return;
1267   DisplayManager* display_manager = Shell::GetInstance()->display_manager();
1268
1269   const DisplayInfo first_display_info =
1270       CreateDisplayInfo(10, 0, gfx::Display::ROTATE_0);
1271   const DisplayInfo second_display_info =
1272       CreateDisplayInfo(11, 1, gfx::Display::ROTATE_0);
1273
1274   std::vector<DisplayInfo> display_info_list;
1275   // Extended
1276   display_info_list.push_back(first_display_info);
1277   display_info_list.push_back(second_display_info);
1278   display_manager->OnNativeDisplaysChanged(display_info_list);
1279
1280   Shell::GetInstance()->window_tree_host_manager()->SwapPrimaryDisplay();
1281
1282   EXPECT_EQ(11, Shell::GetScreen()->GetPrimaryDisplay().id());
1283
1284   display_info_list.clear();
1285   const DisplayInfo new_first_display_info =
1286       CreateDisplayInfo(20, 0, gfx::Display::ROTATE_0);
1287   const DisplayInfo new_second_display_info =
1288       CreateDisplayInfo(21, 1, gfx::Display::ROTATE_0);
1289   display_info_list.push_back(new_first_display_info);
1290   display_info_list.push_back(new_second_display_info);
1291   display_manager->OnNativeDisplaysChanged(display_info_list);
1292
1293   EXPECT_EQ(20, Shell::GetScreen()->GetPrimaryDisplay().id());
1294 }
1295
1296 TEST_F(WindowTreeHostManagerTest, UpdateMouseLocationAfterDisplayChange) {
1297   if (!SupportsMultipleDisplays())
1298     return;
1299
1300   UpdateDisplay("200x200,300x300");
1301   aura::Window::Windows root_windows = Shell::GetAllRootWindows();
1302
1303   aura::Env* env = aura::Env::GetInstance();
1304
1305   ui::test::EventGenerator generator(root_windows[0]);
1306
1307   // Set the initial position.
1308   generator.MoveMouseToInHost(350, 150);
1309   EXPECT_EQ("350,150", env->last_mouse_location().ToString());
1310
1311   // A mouse pointer will stay in the 2nd display.
1312   UpdateDisplay("300x300,200x200");
1313   EXPECT_EQ("450,50", env->last_mouse_location().ToString());
1314
1315   // A mouse pointer will be outside of displays and move to the
1316   // center of 2nd display.
1317   UpdateDisplay("300x300,100x100");
1318   EXPECT_EQ("350,50", env->last_mouse_location().ToString());
1319
1320   // 2nd display was disconnected, and the cursor is
1321   // now in the 1st display.
1322   UpdateDisplay("400x400");
1323   EXPECT_EQ("50,350", env->last_mouse_location().ToString());
1324
1325   // 1st display's resolution has changed, and the mouse pointer is
1326   // now outside. Move the mouse pointer to the center of 1st display.
1327   UpdateDisplay("300x300");
1328   EXPECT_EQ("150,150", env->last_mouse_location().ToString());
1329
1330   // Move the mouse pointer to the bottom of 1st display.
1331   generator.MoveMouseToInHost(150, 290);
1332   EXPECT_EQ("150,290", env->last_mouse_location().ToString());
1333
1334   // The mouse pointer is now on 2nd display.
1335   UpdateDisplay("300x280,200x200");
1336   EXPECT_EQ("450,10", env->last_mouse_location().ToString());
1337 }
1338
1339 TEST_F(WindowTreeHostManagerTest,
1340        UpdateMouseLocationAfterDisplayChange_2ndOnLeft) {
1341   if (!SupportsMultipleDisplays())
1342     return;
1343
1344   // Set the 2nd display on the left.
1345   DisplayLayoutStore* layout_store =
1346       Shell::GetInstance()->display_manager()->layout_store();
1347   DisplayLayout layout = layout_store->default_display_layout();
1348   layout.position = DisplayLayout::LEFT;
1349   layout_store->SetDefaultDisplayLayout(layout);
1350
1351   UpdateDisplay("200x200,300x300");
1352   aura::Window::Windows root_windows = Shell::GetAllRootWindows();
1353
1354   EXPECT_EQ("-300,0 300x300",
1355             ScreenUtil::GetSecondaryDisplay().bounds().ToString());
1356
1357   aura::Env* env = aura::Env::GetInstance();
1358
1359   // Set the initial position.
1360   root_windows[0]->MoveCursorTo(gfx::Point(-150, 250));
1361   EXPECT_EQ("-150,250", env->last_mouse_location().ToString());
1362
1363   // A mouse pointer will stay in 2nd display.
1364   UpdateDisplay("300x300,200x300");
1365   EXPECT_EQ("-50,150", env->last_mouse_location().ToString());
1366
1367   // A mouse pointer will be outside of displays and move to the
1368   // center of 2nd display.
1369   UpdateDisplay("300x300,200x100");
1370   EXPECT_EQ("-100,50", env->last_mouse_location().ToString());
1371
1372   // 2nd display was disconnected. Mouse pointer should move to
1373   // 1st display.
1374   UpdateDisplay("300x300");
1375   EXPECT_EQ("150,150", env->last_mouse_location().ToString());
1376 }
1377
1378 // Test that the cursor swaps displays and that its scale factor and rotation
1379 // are updated when the primary display is swapped.
1380 TEST_F(WindowTreeHostManagerTest,
1381        UpdateMouseLocationAfterDisplayChange_SwapPrimary) {
1382   if (!SupportsMultipleDisplays())
1383     return;
1384
1385   UpdateDisplay("200x200,200x200*2/r");
1386
1387   aura::Env* env = aura::Env::GetInstance();
1388   Shell* shell = Shell::GetInstance();
1389   WindowTreeHostManager* window_tree_host_manager =
1390       shell->window_tree_host_manager();
1391   test::CursorManagerTestApi test_api(shell->cursor_manager());
1392
1393   window_tree_host_manager->GetPrimaryRootWindow()->MoveCursorTo(
1394       gfx::Point(20, 50));
1395
1396   EXPECT_EQ("20,50", env->last_mouse_location().ToString());
1397   EXPECT_EQ(1.0f, test_api.GetCurrentCursor().device_scale_factor());
1398   EXPECT_EQ(gfx::Display::ROTATE_0, test_api.GetCurrentCursorRotation());
1399
1400   window_tree_host_manager->SwapPrimaryDisplay();
1401
1402   EXPECT_EQ("20,50", env->last_mouse_location().ToString());
1403   EXPECT_EQ(2.0f, test_api.GetCurrentCursor().device_scale_factor());
1404   EXPECT_EQ(gfx::Display::ROTATE_90, test_api.GetCurrentCursorRotation());
1405 }
1406
1407 // Test that the cursor moves to the other display and that its scale factor
1408 // and rotation are updated when the primary display is disconnected.
1409 TEST_F(WindowTreeHostManagerTest,
1410        UpdateMouseLocationAfterDisplayChange_PrimaryDisconnected) {
1411   if (!SupportsMultipleDisplays())
1412     return;
1413
1414   aura::Env* env = aura::Env::GetInstance();
1415   Shell* shell = Shell::GetInstance();
1416   WindowTreeHostManager* window_tree_host_manager =
1417       shell->window_tree_host_manager();
1418   test::CursorManagerTestApi test_api(shell->cursor_manager());
1419
1420   UpdateDisplay("300x300*2/r,200x200");
1421   // Swap the primary display to make it possible to remove the primary display
1422   // via UpdateDisplay().
1423   window_tree_host_manager->SwapPrimaryDisplay();
1424   int primary_display_id = window_tree_host_manager->GetPrimaryDisplayId();
1425
1426   window_tree_host_manager->GetPrimaryRootWindow()->MoveCursorTo(
1427       gfx::Point(20, 50));
1428
1429   EXPECT_EQ("20,50", env->last_mouse_location().ToString());
1430   EXPECT_EQ(1.0f, test_api.GetCurrentCursor().device_scale_factor());
1431   EXPECT_EQ(gfx::Display::ROTATE_0, test_api.GetCurrentCursorRotation());
1432
1433   UpdateDisplay("300x300*2/r");
1434   ASSERT_NE(primary_display_id,
1435             window_tree_host_manager->GetPrimaryDisplayId());
1436
1437   // Cursor should be centered on the remaining display.
1438   EXPECT_EQ("75,75", env->last_mouse_location().ToString());
1439   EXPECT_EQ(2.0f, test_api.GetCurrentCursor().device_scale_factor());
1440   EXPECT_EQ(gfx::Display::ROTATE_90, test_api.GetCurrentCursorRotation());
1441 }
1442
1443 // GetRootWindowForDisplayId() for removed gfx::Display during
1444 // OnDisplayRemoved() should not cause crash. See http://crbug.com/415222
1445 TEST_F(WindowTreeHostManagerTest,
1446        GetRootWindowForDisplayIdDuringDisplayDisconnection) {
1447   if (!SupportsMultipleDisplays())
1448     return;
1449
1450   UpdateDisplay("300x300,200x200");
1451   aura::Window* root2 =
1452       Shell::GetInstance()
1453           ->window_tree_host_manager()
1454           ->GetRootWindowForDisplayId(ScreenUtil::GetSecondaryDisplay().id());
1455   views::Widget* widget = views::Widget::CreateWindowWithContextAndBounds(
1456       nullptr, root2, gfx::Rect(350, 0, 100, 100));
1457   views::View* view = new views::View();
1458   widget->GetContentsView()->AddChildView(view);
1459   view->SetBounds(0, 0, 100, 100);
1460   widget->Show();
1461
1462   TestMouseWatcherListener listener;
1463   views::MouseWatcher watcher(
1464       new views::MouseWatcherViewHost(view, gfx::Insets()), &listener);
1465   watcher.Start();
1466
1467   ui::test::EventGenerator event_generator(
1468       widget->GetNativeWindow()->GetRootWindow());
1469   event_generator.MoveMouseToCenterOf(widget->GetNativeWindow());
1470
1471   UpdateDisplay("300x300");
1472   watcher.Stop();
1473
1474   widget->CloseNow();
1475 }
1476
1477 }  // namespace ash