ash/display/display_controller_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/display_controller.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/screen_util.h"
  12 #include "ash/shelf/shelf.h"
  13 #include "ash/shelf/shelf_widget.h"
  14 #include "ash/shell.h"
  15 #include "ash/test/ash_test_base.h"
  16 #include "ash/test/ash_test_helper.h"
  17 #include "ash/test/cursor_manager_test_api.h"
  18 #include "ash/test/display_manager_test_api.h"
  19 #include "ash/test/test_shell_delegate.h"
  20 #include "ash/wm/window_state.h"
  21 #include "ash/wm/wm_event.h"
  22 #include "base/command_line.h"
  23 #include "ui/aura/client/focus_change_observer.h"
  24 #include "ui/aura/client/focus_client.h"
  25 #include "ui/aura/env.h"
  26 #include "ui/aura/window_tracker.h"
  27 #include "ui/aura/window_tree_host.h"
  28 #include "ui/events/event_handler.h"
  29 #include "ui/events/test/event_generator.h"
  30 #include "ui/gfx/display.h"
  31 #include "ui/gfx/screen.h"
  32 #include "ui/views/widget/widget.h"
  33 #include "ui/wm/public/activation_change_observer.h"
  34 #include "ui/wm/public/activation_client.h"
  35
  36 #if defined(USE_X11)
  37 #include <X11/Xlib.h>
  38 #include "ui/gfx/x/x11_types.h"
  39 #undef RootWindow
  40 #endif
  41
  42 namespace ash {
  43 namespace {
  44
  45 const char kDesktopBackgroundView[] = "DesktopBackgroundView";
  46
  47 template<typename T>
  48 class Resetter {
  49  public:
  50   explicit Resetter(T* value) : value_(*value) {
  51     *value = 0;
  52   }
  53   ~Resetter() { }
  54   T value() { return value_; }
  55
  56  private:
  57   T value_;
  58   DISALLOW_COPY_AND_ASSIGN(Resetter);
  59 };
  60
  61 class TestObserver : public DisplayController::Observer,
  62                      public gfx::DisplayObserver,
  63                      public aura::client::FocusChangeObserver,
  64                      public aura::client::ActivationChangeObserver {
  65  public:
  66   TestObserver()
  67       : changing_count_(0),
  68         changed_count_(0),
  69         bounds_changed_count_(0),
  70         rotation_changed_count_(0),
  71         workarea_changed_count_(0),
  72         primary_changed_count_(0),
  73         changed_display_id_(0),
  74         focus_changed_count_(0),
  75         activation_changed_count_(0) {
  76     Shell::GetInstance()->display_controller()->AddObserver(this);
  77     Shell::GetScreen()->AddObserver(this);
  78     aura::client::GetFocusClient(Shell::GetPrimaryRootWindow())->
  79         AddObserver(this);
  80     aura::client::GetActivationClient(Shell::GetPrimaryRootWindow())->
  81         AddObserver(this);
  82   }
  83
  84   ~TestObserver() override {
  85     Shell::GetInstance()->display_controller()->RemoveObserver(this);
  86     Shell::GetScreen()->RemoveObserver(this);
  87     aura::client::GetFocusClient(Shell::GetPrimaryRootWindow())->
  88         RemoveObserver(this);
  89     aura::client::GetActivationClient(Shell::GetPrimaryRootWindow())->
  90         RemoveObserver(this);
  91   }
  92
  93   // Overridden from DisplayController::Observer
  94   void OnDisplayConfigurationChanging() override { ++changing_count_; }
  95   void OnDisplayConfigurationChanged() override { ++changed_count_; }
  96
  97   // Overrideen from gfx::DisplayObserver
  98   void OnDisplayMetricsChanged(const gfx::Display& display,
  99                                uint32_t metrics) override {
 100     changed_display_id_ = display.id();
 101     if (metrics & DISPLAY_METRIC_BOUNDS)
 102       ++bounds_changed_count_;
 103     if (metrics & DISPLAY_METRIC_ROTATION)
 104       ++rotation_changed_count_;
 105     if (metrics & DISPLAY_METRIC_WORK_AREA)
 106       ++workarea_changed_count_;
 107     if (metrics & DISPLAY_METRIC_PRIMARY)
 108       ++primary_changed_count_;
 109   }
 110   void OnDisplayAdded(const gfx::Display& new_display) override {}
 111   void OnDisplayRemoved(const gfx::Display& old_display) override {}
 112
 113   // Overridden from aura::client::FocusChangeObserver
 114   void OnWindowFocused(aura::Window* gained_focus,
 115                        aura::Window* lost_focus) override {
 116     focus_changed_count_++;
 117   }
 118
 119   // Overridden from aura::client::ActivationChangeObserver
 120   void OnWindowActivated(aura::Window* gained_active,
 121                          aura::Window* lost_active) override {
 122     activation_changed_count_++;
 123   }
 124   void OnAttemptToReactivateWindow(aura::Window* request_active,
 125                                    aura::Window* actual_active) override {}
 126
 127   int CountAndReset() {
 128     EXPECT_EQ(changing_count_, changed_count_);
 129     changed_count_ = 0;
 130     return Resetter<int>(&changing_count_).value();
 131   }
 132
 133   int64 GetBoundsChangedCountAndReset() {
 134     return Resetter<int>(&bounds_changed_count_).value();
 135   }
 136
 137   int64 GetRotationChangedCountAndReset() {
 138     return Resetter<int>(&rotation_changed_count_).value();
 139   }
 140
 141   int64 GetWorkareaChangedCountAndReset() {
 142     return Resetter<int>(&workarea_changed_count_).value();
 143   }
 144
 145   int64 GetPrimaryChangedCountAndReset() {
 146     return Resetter<int>(&primary_changed_count_).value();
 147   }
 148
 149   int64 GetChangedDisplayIdAndReset() {
 150     return Resetter<int64>(&changed_display_id_).value();
 151   }
 152
 153   int GetFocusChangedCountAndReset() {
 154     return Resetter<int>(&focus_changed_count_).value();
 155   }
 156
 157   int GetActivationChangedCountAndReset() {
 158     return Resetter<int>(&activation_changed_count_).value();
 159   }
 160
 161  private:
 162   int changing_count_;
 163   int changed_count_;
 164
 165   int bounds_changed_count_;
 166   int rotation_changed_count_;
 167   int workarea_changed_count_;
 168   int primary_changed_count_;
 169   int64 changed_display_id_;
 170
 171   int focus_changed_count_;
 172   int activation_changed_count_;
 173
 174   DISALLOW_COPY_AND_ASSIGN(TestObserver);
 175 };
 176
 177 gfx::Display GetPrimaryDisplay() {
 178   return Shell::GetScreen()->GetDisplayNearestWindow(
 179       Shell::GetAllRootWindows()[0]);
 180 }
 181
 182 gfx::Display GetSecondaryDisplay() {
 183   return Shell::GetScreen()->GetDisplayNearestWindow(
 184       Shell::GetAllRootWindows()[1]);
 185 }
 186
 187 void SetSecondaryDisplayLayoutAndOffset(DisplayLayout::Position position,
 188                                         int offset) {
 189   DisplayLayout layout(position, offset);
 190   ASSERT_GT(Shell::GetScreen()->GetNumDisplays(), 1);
 191   Shell::GetInstance()->display_manager()->
 192       SetLayoutForCurrentDisplays(layout);
 193 }
 194
 195 void SetSecondaryDisplayLayout(DisplayLayout::Position position) {
 196   SetSecondaryDisplayLayoutAndOffset(position, 0);
 197 }
 198
 199 void SetDefaultDisplayLayout(DisplayLayout::Position position) {
 200   Shell::GetInstance()->display_manager()->layout_store()->
 201       SetDefaultDisplayLayout(DisplayLayout(position, 0));
 202 }
 203
 204 class DisplayControllerShutdownTest : public test::AshTestBase {
 205  public:
 206   DisplayControllerShutdownTest() {}
 207   ~DisplayControllerShutdownTest() override {}
 208
 209   void TearDown() override {
 210     test::AshTestBase::TearDown();
 211     if (!SupportsMultipleDisplays())
 212       return;
 213
 214     // Make sure that primary display is accessible after shutdown.
 215     gfx::Display primary = Shell::GetScreen()->GetPrimaryDisplay();
 216     EXPECT_EQ("0,0 444x333", primary.bounds().ToString());
 217     EXPECT_EQ(2, Shell::GetScreen()->GetNumDisplays());
 218   }
 219
 220  private:
 221   DISALLOW_COPY_AND_ASSIGN(DisplayControllerShutdownTest);
 222 };
 223
 224 class StartupHelper : public test::TestShellDelegate,
 225                       public DisplayController::Observer {
 226  public:
 227   StartupHelper() : displays_initialized_(false) {}
 228   ~StartupHelper() override {}
 229
 230   // ash::ShellSelegate:
 231   void PreInit() override {
 232     Shell::GetInstance()->display_controller()->AddObserver(this);
 233   }
 234
 235   // ash::DisplayController::Observer:
 236   void OnDisplaysInitialized() override {
 237     DCHECK(!displays_initialized_);
 238     displays_initialized_ = true;
 239   }
 240
 241   bool displays_initialized() const {
 242     return displays_initialized_;
 243   }
 244
 245  private:
 246   bool displays_initialized_;
 247
 248   DISALLOW_COPY_AND_ASSIGN(StartupHelper);
 249 };
 250
 251 class DisplayControllerStartupTest : public test::AshTestBase {
 252  public:
 253   DisplayControllerStartupTest() : startup_helper_(new StartupHelper) {}
 254   ~DisplayControllerStartupTest() override {}
 255
 256   // ash::test::AshTestBase:
 257   void SetUp() override {
 258     ash_test_helper()->set_test_shell_delegate(startup_helper_);
 259     test::AshTestBase::SetUp();
 260   }
 261   void TearDown() override {
 262     Shell::GetInstance()->display_controller()->RemoveObserver(startup_helper_);
 263     test::AshTestBase::TearDown();
 264   }
 265
 266   const StartupHelper* startup_helper() const { return startup_helper_; }
 267
 268  private:
 269   StartupHelper* startup_helper_;  // Owned by ash::Shell.
 270
 271   DISALLOW_COPY_AND_ASSIGN(DisplayControllerStartupTest);
 272 };
 273
 274 class TestEventHandler : public ui::EventHandler {
 275  public:
 276   TestEventHandler() : target_root_(NULL),
 277                        touch_radius_x_(0.0),
 278                        touch_radius_y_(0.0),
 279                        scroll_x_offset_(0.0),
 280                        scroll_y_offset_(0.0),
 281                        scroll_x_offset_ordinal_(0.0),
 282                        scroll_y_offset_ordinal_(0.0) {}
 283   ~TestEventHandler() override {}
 284
 285   void OnMouseEvent(ui::MouseEvent* event) override {
 286     if (event->flags() & ui::EF_IS_SYNTHESIZED &&
 287         event->type() != ui::ET_MOUSE_EXITED &&
 288         event->type() != ui::ET_MOUSE_ENTERED) {
 289       return;
 290     }
 291     aura::Window* target = static_cast<aura::Window*>(event->target());
 292     mouse_location_ = event->root_location();
 293     target_root_ = target->GetRootWindow();
 294     event->StopPropagation();
 295   }
 296
 297   void OnTouchEvent(ui::TouchEvent* event) override {
 298     aura::Window* target = static_cast<aura::Window*>(event->target());
 299     // Only record when the target is the background which covers
 300     // entire root window.
 301     if (target->name() != kDesktopBackgroundView)
 302       return;
 303     touch_radius_x_ = event->radius_x();
 304     touch_radius_y_ = event->radius_y();
 305     event->StopPropagation();
 306   }
 307
 308   void OnScrollEvent(ui::ScrollEvent* event) override {
 309     aura::Window* target = static_cast<aura::Window*>(event->target());
 310     // Only record when the target is the background which covers
 311     // entire root window.
 312     if (target->name() != kDesktopBackgroundView)
 313       return;
 314
 315     if (event->type() == ui::ET_SCROLL) {
 316       scroll_x_offset_ = event->x_offset();
 317       scroll_y_offset_ = event->y_offset();
 318       scroll_x_offset_ordinal_ = event->x_offset_ordinal();
 319       scroll_y_offset_ordinal_ = event->y_offset_ordinal();
 320     }
 321     event->StopPropagation();
 322   }
 323
 324   std::string GetLocationAndReset() {
 325     std::string result = mouse_location_.ToString();
 326     mouse_location_.SetPoint(0, 0);
 327     target_root_ = NULL;
 328     return result;
 329   }
 330
 331   float touch_radius_x() { return touch_radius_x_; }
 332   float touch_radius_y() { return touch_radius_y_; }
 333   float scroll_x_offset() { return scroll_x_offset_; }
 334   float scroll_y_offset() { return scroll_y_offset_; }
 335   float scroll_x_offset_ordinal() { return scroll_x_offset_ordinal_; }
 336   float scroll_y_offset_ordinal() { return scroll_y_offset_ordinal_; }
 337
 338  private:
 339   gfx::Point mouse_location_;
 340   aura::Window* target_root_;
 341
 342   float touch_radius_x_;
 343   float touch_radius_y_;
 344   float scroll_x_offset_;
 345   float scroll_y_offset_;
 346   float scroll_x_offset_ordinal_;
 347   float scroll_y_offset_ordinal_;
 348
 349   DISALLOW_COPY_AND_ASSIGN(TestEventHandler);
 350 };
 351
 352 gfx::Display::Rotation GetStoredRotation(int64 id) {
 353   return Shell::GetInstance()->display_manager()->GetDisplayInfo(id).rotation();
 354 }
 355
 356 float GetStoredUIScale(int64 id) {
 357   return Shell::GetInstance()->display_manager()->GetDisplayInfo(id).
 358       GetEffectiveUIScale();
 359 }
 360
 361 #if defined(USE_X11)
 362 void GetPrimaryAndSeconary(aura::Window** primary,
 363                            aura::Window** secondary) {
 364   *primary = Shell::GetPrimaryRootWindow();
 365   aura::Window::Windows root_windows = Shell::GetAllRootWindows();
 366   *secondary = root_windows[0] == *primary ? root_windows[1] : root_windows[0];
 367 }
 368
 369 std::string GetXWindowName(aura::WindowTreeHost* host) {
 370   char* name = NULL;
 371   XFetchName(gfx::GetXDisplay(), host->GetAcceleratedWidget(), &name);
 372   std::string ret(name);
 373   XFree(name);
 374   return ret;
 375 }
 376 #endif
 377
 378 }  // namespace
 379
 380 typedef test::AshTestBase DisplayControllerTest;
 381
 382 TEST_F(DisplayControllerShutdownTest, Shutdown) {
 383   if (!SupportsMultipleDisplays())
 384     return;
 385
 386   UpdateDisplay("444x333, 200x200");
 387 }
 388
 389 TEST_F(DisplayControllerStartupTest, Startup) {
 390   if (!SupportsMultipleDisplays())
 391     return;
 392
 393   EXPECT_TRUE(startup_helper()->displays_initialized());
 394 }
 395
 396 TEST_F(DisplayControllerTest, SecondaryDisplayLayout) {
 397   if (!SupportsMultipleDisplays())
 398     return;
 399
 400   // Creates windows to catch activation change event.
 401   scoped_ptr<aura::Window> w1(CreateTestWindowInShellWithId(1));
 402   w1->Focus();
 403
 404   TestObserver observer;
 405   UpdateDisplay("500x500,400x400");
 406   EXPECT_EQ(1, observer.CountAndReset());  // resize and add
 407   EXPECT_EQ(1, observer.GetBoundsChangedCountAndReset());
 408   EXPECT_EQ(1, observer.GetWorkareaChangedCountAndReset());
 409   EXPECT_EQ(0, observer.GetFocusChangedCountAndReset());
 410   EXPECT_EQ(0, observer.GetActivationChangedCountAndReset());
 411   gfx::Insets insets(5, 5, 5, 5);
 412   int64 secondary_display_id = ScreenUtil::GetSecondaryDisplay().id();
 413   Shell::GetInstance()->display_manager()->UpdateWorkAreaOfDisplay(
 414       secondary_display_id, insets);
 415
 416   // Default layout is RIGHT.
 417   EXPECT_EQ("0,0 500x500", GetPrimaryDisplay().bounds().ToString());
 418   EXPECT_EQ("500,0 400x400", GetSecondaryDisplay().bounds().ToString());
 419   EXPECT_EQ("505,5 390x390", GetSecondaryDisplay().work_area().ToString());
 420   EXPECT_EQ(0, observer.GetFocusChangedCountAndReset());
 421   EXPECT_EQ(0, observer.GetActivationChangedCountAndReset());
 422
 423   // Layout the secondary display to the bottom of the primary.
 424   SetSecondaryDisplayLayout(DisplayLayout::BOTTOM);
 425   EXPECT_EQ(1, observer.CountAndReset());
 426   EXPECT_EQ(1, observer.GetBoundsChangedCountAndReset());
 427   EXPECT_EQ(1, observer.GetWorkareaChangedCountAndReset());
 428   EXPECT_EQ(0, observer.GetFocusChangedCountAndReset());
 429   EXPECT_EQ(0, observer.GetActivationChangedCountAndReset());
 430   EXPECT_EQ(secondary_display_id, observer.GetChangedDisplayIdAndReset());
 431   EXPECT_EQ("0,0 500x500", GetPrimaryDisplay().bounds().ToString());
 432   EXPECT_EQ("0,500 400x400", GetSecondaryDisplay().bounds().ToString());
 433   EXPECT_EQ("5,505 390x390", GetSecondaryDisplay().work_area().ToString());
 434
 435   // Layout the secondary display to the left of the primary.
 436   SetSecondaryDisplayLayout(DisplayLayout::LEFT);
 437   EXPECT_EQ(1, observer.CountAndReset());
 438   EXPECT_EQ(1, observer.GetBoundsChangedCountAndReset());
 439   EXPECT_EQ(1, observer.GetWorkareaChangedCountAndReset());
 440   EXPECT_EQ(0, observer.GetFocusChangedCountAndReset());
 441   EXPECT_EQ(0, observer.GetActivationChangedCountAndReset());
 442   EXPECT_EQ(secondary_display_id, observer.GetChangedDisplayIdAndReset());
 443   EXPECT_EQ("0,0 500x500", GetPrimaryDisplay().bounds().ToString());
 444   EXPECT_EQ("-400,0 400x400", GetSecondaryDisplay().bounds().ToString());
 445   EXPECT_EQ("-395,5 390x390", GetSecondaryDisplay().work_area().ToString());
 446
 447   // Layout the secondary display to the top of the primary.
 448   SetSecondaryDisplayLayout(DisplayLayout::TOP);
 449   EXPECT_EQ(1, observer.CountAndReset());
 450   EXPECT_EQ(1, observer.GetBoundsChangedCountAndReset());
 451   EXPECT_EQ(1, observer.GetWorkareaChangedCountAndReset());
 452   EXPECT_EQ(0, observer.GetFocusChangedCountAndReset());
 453   EXPECT_EQ(0, observer.GetActivationChangedCountAndReset());
 454   EXPECT_EQ(secondary_display_id, observer.GetChangedDisplayIdAndReset());
 455   EXPECT_EQ("0,0 500x500", GetPrimaryDisplay().bounds().ToString());
 456   EXPECT_EQ("0,-400 400x400", GetSecondaryDisplay().bounds().ToString());
 457   EXPECT_EQ("5,-395 390x390", GetSecondaryDisplay().work_area().ToString());
 458
 459   // Layout to the right with an offset.
 460   SetSecondaryDisplayLayoutAndOffset(DisplayLayout::RIGHT, 300);
 461   EXPECT_EQ(1, observer.CountAndReset());  // resize and add
 462   EXPECT_EQ(1, observer.GetBoundsChangedCountAndReset());
 463   EXPECT_EQ(1, observer.GetWorkareaChangedCountAndReset());
 464   EXPECT_EQ(0, observer.GetFocusChangedCountAndReset());
 465   EXPECT_EQ(0, observer.GetActivationChangedCountAndReset());
 466   EXPECT_EQ(secondary_display_id, observer.GetChangedDisplayIdAndReset());
 467   EXPECT_EQ("0,0 500x500", GetPrimaryDisplay().bounds().ToString());
 468   EXPECT_EQ("500,300 400x400", GetSecondaryDisplay().bounds().ToString());
 469
 470   // Keep the minimum 100.
 471   SetSecondaryDisplayLayoutAndOffset(DisplayLayout::RIGHT, 490);
 472   EXPECT_EQ(1, observer.CountAndReset());  // resize and add
 473   EXPECT_EQ(1, observer.GetBoundsChangedCountAndReset());
 474   EXPECT_EQ(1, observer.GetWorkareaChangedCountAndReset());
 475   EXPECT_EQ(0, observer.GetFocusChangedCountAndReset());
 476   EXPECT_EQ(0, observer.GetActivationChangedCountAndReset());
 477   EXPECT_EQ(secondary_display_id, observer.GetChangedDisplayIdAndReset());
 478   EXPECT_EQ("0,0 500x500", GetPrimaryDisplay().bounds().ToString());
 479   EXPECT_EQ("500,400 400x400", GetSecondaryDisplay().bounds().ToString());
 480
 481   SetSecondaryDisplayLayoutAndOffset(DisplayLayout::RIGHT, -400);
 482   EXPECT_EQ(secondary_display_id, observer.GetChangedDisplayIdAndReset());
 483   EXPECT_EQ(1, observer.GetBoundsChangedCountAndReset());
 484   EXPECT_EQ(1, observer.GetWorkareaChangedCountAndReset());
 485   EXPECT_EQ(1, observer.CountAndReset());  // resize and add
 486   EXPECT_EQ(0, observer.GetFocusChangedCountAndReset());
 487   EXPECT_EQ(0, observer.GetActivationChangedCountAndReset());
 488   EXPECT_EQ("0,0 500x500", GetPrimaryDisplay().bounds().ToString());
 489   EXPECT_EQ("500,-300 400x400", GetSecondaryDisplay().bounds().ToString());
 490
 491   //  Layout to the bottom with an offset.
 492   SetSecondaryDisplayLayoutAndOffset(DisplayLayout::BOTTOM, -200);
 493   EXPECT_EQ(secondary_display_id, observer.GetChangedDisplayIdAndReset());
 494   EXPECT_EQ(1, observer.GetBoundsChangedCountAndReset());
 495   EXPECT_EQ(1, observer.GetWorkareaChangedCountAndReset());
 496   EXPECT_EQ(1, observer.CountAndReset());  // resize and add
 497   EXPECT_EQ(0, observer.GetFocusChangedCountAndReset());
 498   EXPECT_EQ(0, observer.GetActivationChangedCountAndReset());
 499   EXPECT_EQ("0,0 500x500", GetPrimaryDisplay().bounds().ToString());
 500   EXPECT_EQ("-200,500 400x400", GetSecondaryDisplay().bounds().ToString());
 501
 502   // Keep the minimum 100.
 503   SetSecondaryDisplayLayoutAndOffset(DisplayLayout::BOTTOM, 490);
 504   EXPECT_EQ(secondary_display_id, observer.GetChangedDisplayIdAndReset());
 505   EXPECT_EQ(1, observer.GetBoundsChangedCountAndReset());
 506   EXPECT_EQ(1, observer.GetWorkareaChangedCountAndReset());
 507   EXPECT_EQ(1, observer.CountAndReset());  // resize and add
 508   EXPECT_EQ(0, observer.GetFocusChangedCountAndReset());
 509   EXPECT_EQ(0, observer.GetActivationChangedCountAndReset());
 510   EXPECT_EQ("0,0 500x500", GetPrimaryDisplay().bounds().ToString());
 511   EXPECT_EQ("400,500 400x400", GetSecondaryDisplay().bounds().ToString());
 512
 513   SetSecondaryDisplayLayoutAndOffset(DisplayLayout::BOTTOM, -400);
 514   EXPECT_EQ(secondary_display_id, observer.GetChangedDisplayIdAndReset());
 515   EXPECT_EQ(1, observer.GetBoundsChangedCountAndReset());
 516   EXPECT_EQ(1, observer.GetWorkareaChangedCountAndReset());
 517   EXPECT_EQ(1, observer.CountAndReset());  // resize and add
 518   EXPECT_EQ(0, observer.GetFocusChangedCountAndReset());
 519   EXPECT_EQ(0, observer.GetActivationChangedCountAndReset());
 520   EXPECT_EQ("0,0 500x500", GetPrimaryDisplay().bounds().ToString());
 521   EXPECT_EQ("-300,500 400x400", GetSecondaryDisplay().bounds().ToString());
 522
 523   // Setting the same layout shouldn't invoke observers.
 524   SetSecondaryDisplayLayoutAndOffset(DisplayLayout::BOTTOM, -400);
 525   EXPECT_EQ(0, observer.GetChangedDisplayIdAndReset());
 526   EXPECT_EQ(0, observer.GetBoundsChangedCountAndReset());
 527   EXPECT_EQ(0, observer.GetWorkareaChangedCountAndReset());
 528   EXPECT_EQ(0, observer.CountAndReset());  // resize and add
 529   EXPECT_EQ(0, observer.GetFocusChangedCountAndReset());
 530   EXPECT_EQ(0, observer.GetActivationChangedCountAndReset());
 531   EXPECT_EQ("0,0 500x500", GetPrimaryDisplay().bounds().ToString());
 532   EXPECT_EQ("-300,500 400x400", GetSecondaryDisplay().bounds().ToString());
 533
 534   UpdateDisplay("500x500");
 535   EXPECT_LE(1, observer.GetFocusChangedCountAndReset());
 536   EXPECT_LE(1, observer.GetActivationChangedCountAndReset());
 537 }
 538
 539 namespace {
 540
 541 DisplayInfo CreateDisplayInfo(int64 id,
 542                               const gfx::Rect& bounds,
 543                               float device_scale_factor) {
 544   DisplayInfo info(id, "", false);
 545   info.SetBounds(bounds);
 546   info.set_device_scale_factor(device_scale_factor);
 547   return info;
 548 }
 549
 550 }  // namespace
 551
 552 TEST_F(DisplayControllerTest, MirrorToDockedWithFullscreen) {
 553   if (!SupportsMultipleDisplays())
 554     return;
 555
 556   // Creates windows to catch activation change event.
 557   scoped_ptr<aura::Window> w1(CreateTestWindowInShellWithId(1));
 558   w1->Focus();
 559
 560   // Docked mode.
 561   DisplayManager* display_manager = Shell::GetInstance()->display_manager();
 562
 563   const DisplayInfo internal_display_info =
 564       CreateDisplayInfo(1, gfx::Rect(0, 0, 500, 500), 2.0f);
 565   const DisplayInfo external_display_info =
 566       CreateDisplayInfo(2, gfx::Rect(0, 0, 500, 500), 1.0f);
 567
 568   std::vector<DisplayInfo> display_info_list;
 569   // Mirror.
 570   display_info_list.push_back(internal_display_info);
 571   display_info_list.push_back(external_display_info);
 572   display_manager->OnNativeDisplaysChanged(display_info_list);
 573   const int64 internal_display_id =
 574       test::DisplayManagerTestApi(display_manager).
 575       SetFirstDisplayAsInternalDisplay();
 576   EXPECT_EQ(1, internal_display_id);
 577   EXPECT_EQ(2U, display_manager->num_connected_displays());
 578   EXPECT_EQ(1U, display_manager->GetNumDisplays());
 579
 580   wm::WindowState* window_state = wm::GetWindowState(w1.get());
 581   const wm::WMEvent toggle_fullscreen_event(wm::WM_EVENT_TOGGLE_FULLSCREEN);
 582   window_state->OnWMEvent(&toggle_fullscreen_event);
 583   EXPECT_TRUE(window_state->IsFullscreen());
 584   EXPECT_EQ("0,0 250x250", w1->bounds().ToString());
 585   // Dock mode.
 586   TestObserver observer;
 587   display_info_list.clear();
 588   display_info_list.push_back(external_display_info);
 589   display_manager->OnNativeDisplaysChanged(display_info_list);
 590   EXPECT_EQ(1U, display_manager->GetNumDisplays());
 591   EXPECT_EQ(1U, display_manager->num_connected_displays());
 592   // Observers are called due to primary change.
 593   EXPECT_EQ(2, observer.GetChangedDisplayIdAndReset());
 594   EXPECT_EQ(1, observer.GetBoundsChangedCountAndReset());
 595   EXPECT_EQ(1, observer.GetWorkareaChangedCountAndReset());
 596   EXPECT_EQ(1, observer.GetPrimaryChangedCountAndReset());
 597   EXPECT_EQ(1, observer.CountAndReset());
 598   EXPECT_EQ(0, observer.GetFocusChangedCountAndReset());
 599   EXPECT_EQ(0, observer.GetActivationChangedCountAndReset());
 600
 601   EXPECT_TRUE(window_state->IsFullscreen());
 602   EXPECT_EQ("0,0 500x500", w1->bounds().ToString());
 603 }
 604
 605 TEST_F(DisplayControllerTest, BoundsUpdated) {
 606   if (!SupportsMultipleDisplays())
 607     return;
 608
 609   // Creates windows to catch activation change event.
 610   scoped_ptr<aura::Window> w1(CreateTestWindowInShellWithId(1));
 611   w1->Focus();
 612
 613   TestObserver observer;
 614   SetDefaultDisplayLayout(DisplayLayout::BOTTOM);
 615   UpdateDisplay("200x200,300x300");  // layout, resize and add.
 616   EXPECT_EQ(1, observer.CountAndReset());
 617   EXPECT_EQ(0, observer.GetFocusChangedCountAndReset());
 618   EXPECT_EQ(0, observer.GetActivationChangedCountAndReset());
 619
 620   DisplayManager* display_manager = Shell::GetInstance()->display_manager();
 621   gfx::Insets insets(5, 5, 5, 5);
 622   display_manager->UpdateWorkAreaOfDisplay(
 623       ScreenUtil::GetSecondaryDisplay().id(), insets);
 624
 625   EXPECT_EQ("0,0 200x200", GetPrimaryDisplay().bounds().ToString());
 626   EXPECT_EQ("0,200 300x300", GetSecondaryDisplay().bounds().ToString());
 627   EXPECT_EQ("5,205 290x290", GetSecondaryDisplay().work_area().ToString());
 628
 629   UpdateDisplay("400x400,200x200");
 630   EXPECT_EQ(1, observer.CountAndReset());  // two resizes
 631   EXPECT_EQ(0, observer.GetFocusChangedCountAndReset());
 632   EXPECT_EQ(0, observer.GetActivationChangedCountAndReset());
 633   EXPECT_EQ("0,0 400x400", GetPrimaryDisplay().bounds().ToString());
 634   EXPECT_EQ("0,400 200x200", GetSecondaryDisplay().bounds().ToString());
 635
 636   UpdateDisplay("400x400,300x300");
 637   EXPECT_EQ(1, observer.CountAndReset());
 638   EXPECT_EQ(0, observer.GetFocusChangedCountAndReset());
 639   EXPECT_EQ(0, observer.GetActivationChangedCountAndReset());
 640   EXPECT_EQ("0,0 400x400", GetPrimaryDisplay().bounds().ToString());
 641   EXPECT_EQ("0,400 300x300", GetSecondaryDisplay().bounds().ToString());
 642
 643   UpdateDisplay("400x400");
 644   EXPECT_EQ(1, observer.CountAndReset());
 645   EXPECT_LE(1, observer.GetFocusChangedCountAndReset());
 646   EXPECT_LE(1, observer.GetActivationChangedCountAndReset());
 647   EXPECT_EQ("0,0 400x400", GetPrimaryDisplay().bounds().ToString());
 648   EXPECT_EQ(1, Shell::GetScreen()->GetNumDisplays());
 649
 650   UpdateDisplay("400x500*2,300x300");
 651   EXPECT_EQ(1, observer.CountAndReset());
 652   EXPECT_EQ(0, observer.GetFocusChangedCountAndReset());
 653   EXPECT_EQ(0, observer.GetActivationChangedCountAndReset());
 654   ASSERT_EQ(2, Shell::GetScreen()->GetNumDisplays());
 655   EXPECT_EQ("0,0 200x250", GetPrimaryDisplay().bounds().ToString());
 656   EXPECT_EQ("0,250 300x300", GetSecondaryDisplay().bounds().ToString());
 657
 658   // No change
 659   UpdateDisplay("400x500*2,300x300");
 660   // We still call into Pre/PostDisplayConfigurationChange().
 661   EXPECT_EQ(1, observer.CountAndReset());
 662   EXPECT_EQ(0, observer.GetFocusChangedCountAndReset());
 663   EXPECT_EQ(0, observer.GetActivationChangedCountAndReset());
 664
 665   // Rotation
 666   observer.GetRotationChangedCountAndReset();  // we only want to reset.
 667   int64 primary_id = GetPrimaryDisplay().id();
 668   display_manager->SetDisplayRotation(primary_id, gfx::Display::ROTATE_90);
 669   EXPECT_EQ(1, observer.GetRotationChangedCountAndReset());
 670   EXPECT_EQ(1, observer.CountAndReset());
 671   EXPECT_EQ(0, observer.GetFocusChangedCountAndReset());
 672   EXPECT_EQ(0, observer.GetActivationChangedCountAndReset());
 673   display_manager->SetDisplayRotation(primary_id, gfx::Display::ROTATE_90);
 674   EXPECT_EQ(0, observer.GetRotationChangedCountAndReset());
 675   EXPECT_EQ(0, observer.CountAndReset());
 676   EXPECT_EQ(0, observer.GetFocusChangedCountAndReset());
 677   EXPECT_EQ(0, observer.GetActivationChangedCountAndReset());
 678
 679   // UI scale is eanbled only on internal display.
 680   int64 secondary_id = GetSecondaryDisplay().id();
 681   gfx::Display::SetInternalDisplayId(secondary_id);
 682   display_manager->SetDisplayUIScale(secondary_id, 1.125f);
 683   EXPECT_EQ(1, observer.CountAndReset());
 684   EXPECT_EQ(0, observer.GetFocusChangedCountAndReset());
 685   EXPECT_EQ(0, observer.GetActivationChangedCountAndReset());
 686   display_manager->SetDisplayUIScale(secondary_id, 1.125f);
 687   EXPECT_EQ(0, observer.CountAndReset());
 688   EXPECT_EQ(0, observer.GetFocusChangedCountAndReset());
 689   EXPECT_EQ(0, observer.GetActivationChangedCountAndReset());
 690   display_manager->SetDisplayUIScale(primary_id, 1.125f);
 691   EXPECT_EQ(0, observer.CountAndReset());
 692   EXPECT_EQ(0, observer.GetFocusChangedCountAndReset());
 693   EXPECT_EQ(0, observer.GetActivationChangedCountAndReset());
 694   display_manager->SetDisplayUIScale(primary_id, 1.125f);
 695   EXPECT_EQ(0, observer.CountAndReset());
 696   EXPECT_EQ(0, observer.GetFocusChangedCountAndReset());
 697   EXPECT_EQ(0, observer.GetActivationChangedCountAndReset());
 698 }
 699
 700 TEST_F(DisplayControllerTest, SwapPrimary) {
 701   if (!SupportsMultipleDisplays())
 702     return;
 703
 704   DisplayController* display_controller =
 705       Shell::GetInstance()->display_controller();
 706   DisplayManager* display_manager = Shell::GetInstance()->display_manager();
 707
 708   UpdateDisplay("200x200,300x300");
 709   gfx::Display primary_display = Shell::GetScreen()->GetPrimaryDisplay();
 710   gfx::Display secondary_display = ScreenUtil::GetSecondaryDisplay();
 711
 712   DisplayLayout display_layout(DisplayLayout::RIGHT, 50);
 713   display_manager->SetLayoutForCurrentDisplays(display_layout);
 714
 715   EXPECT_NE(primary_display.id(), secondary_display.id());
 716   aura::Window* primary_root =
 717       display_controller->GetRootWindowForDisplayId(primary_display.id());
 718   aura::Window* secondary_root =
 719       display_controller->GetRootWindowForDisplayId(secondary_display.id());
 720   EXPECT_NE(primary_root, secondary_root);
 721   aura::Window* shelf_window =
 722       Shelf::ForPrimaryDisplay()->shelf_widget()->GetNativeView();
 723   EXPECT_TRUE(primary_root->Contains(shelf_window));
 724   EXPECT_FALSE(secondary_root->Contains(shelf_window));
 725   EXPECT_EQ(primary_display.id(),
 726             Shell::GetScreen()->GetDisplayNearestPoint(
 727                 gfx::Point(-100, -100)).id());
 728   EXPECT_EQ(primary_display.id(),
 729             Shell::GetScreen()->GetDisplayNearestWindow(NULL).id());
 730
 731   EXPECT_EQ("0,0 200x200", primary_display.bounds().ToString());
 732   EXPECT_EQ("0,0 200x153", primary_display.work_area().ToString());
 733   EXPECT_EQ("200,0 300x300", secondary_display.bounds().ToString());
 734   EXPECT_EQ("200,0 300x253", secondary_display.work_area().ToString());
 735   EXPECT_EQ("right, 50",
 736             display_manager->GetCurrentDisplayLayout().ToString());
 737
 738   // Switch primary and secondary
 739   display_controller->SetPrimaryDisplay(secondary_display);
 740   const DisplayLayout& inverted_layout =
 741       display_manager->GetCurrentDisplayLayout();
 742   EXPECT_EQ("left, -50", inverted_layout.ToString());
 743
 744   EXPECT_EQ(secondary_display.id(),
 745             Shell::GetScreen()->GetPrimaryDisplay().id());
 746   EXPECT_EQ(primary_display.id(), ScreenUtil::GetSecondaryDisplay().id());
 747   EXPECT_EQ(primary_display.id(),
 748             Shell::GetScreen()->GetDisplayNearestPoint(
 749                 gfx::Point(-100, -100)).id());
 750   EXPECT_EQ(secondary_display.id(),
 751             Shell::GetScreen()->GetDisplayNearestWindow(NULL).id());
 752
 753   EXPECT_EQ(
 754       primary_root,
 755       display_controller->GetRootWindowForDisplayId(secondary_display.id()));
 756   EXPECT_EQ(
 757       secondary_root,
 758       display_controller->GetRootWindowForDisplayId(primary_display.id()));
 759   EXPECT_TRUE(primary_root->Contains(shelf_window));
 760   EXPECT_FALSE(secondary_root->Contains(shelf_window));
 761
 762   // Test if the bounds are correctly swapped.
 763   gfx::Display swapped_primary = Shell::GetScreen()->GetPrimaryDisplay();
 764   gfx::Display swapped_secondary = ScreenUtil::GetSecondaryDisplay();
 765   EXPECT_EQ("0,0 300x300", swapped_primary.bounds().ToString());
 766   EXPECT_EQ("0,0 300x253", swapped_primary.work_area().ToString());
 767   EXPECT_EQ("-200,-50 200x200", swapped_secondary.bounds().ToString());
 768
 769   EXPECT_EQ("-200,-50 200x153", swapped_secondary.work_area().ToString());
 770
 771   aura::WindowTracker tracker;
 772   tracker.Add(primary_root);
 773   tracker.Add(secondary_root);
 774
 775   // Deleting 2nd display should move the primary to original primary display.
 776   UpdateDisplay("200x200");
 777   RunAllPendingInMessageLoop();  // RootWindow is deleted in a posted task.
 778   EXPECT_EQ(1, Shell::GetScreen()->GetNumDisplays());
 779   EXPECT_EQ(primary_display.id(), Shell::GetScreen()->GetPrimaryDisplay().id());
 780   EXPECT_EQ(primary_display.id(),
 781             Shell::GetScreen()->GetDisplayNearestPoint(
 782                 gfx::Point(-100, -100)).id());
 783   EXPECT_EQ(primary_display.id(),
 784             Shell::GetScreen()->GetDisplayNearestWindow(NULL).id());
 785   EXPECT_TRUE(tracker.Contains(primary_root));
 786   EXPECT_FALSE(tracker.Contains(secondary_root));
 787   EXPECT_TRUE(primary_root->Contains(shelf_window));
 788 }
 789
 790 TEST_F(DisplayControllerTest, FindNearestDisplay) {
 791   if (!SupportsMultipleDisplays())
 792     return;
 793
 794   DisplayController* display_controller =
 795       Shell::GetInstance()->display_controller();
 796   DisplayManager* display_manager = Shell::GetInstance()->display_manager();
 797
 798   UpdateDisplay("200x200,300x300");
 799   DisplayLayout display_layout(DisplayLayout::RIGHT, 50);
 800   display_manager->SetLayoutForCurrentDisplays(display_layout);
 801
 802   gfx::Display primary_display = Shell::GetScreen()->GetPrimaryDisplay();
 803   gfx::Display secondary_display = ScreenUtil::GetSecondaryDisplay();
 804   EXPECT_NE(primary_display.id(), secondary_display.id());
 805   aura::Window* primary_root =
 806       display_controller->GetRootWindowForDisplayId(primary_display.id());
 807   aura::Window* secondary_root =
 808       display_controller->GetRootWindowForDisplayId(secondary_display.id());
 809   EXPECT_NE(primary_root, secondary_root);
 810
 811   // Test that points outside of any display return the nearest display.
 812   EXPECT_EQ(primary_display.id(), Shell::GetScreen()->GetDisplayNearestPoint(
 813       gfx::Point(-100, 0)).id());
 814   EXPECT_EQ(primary_display.id(), Shell::GetScreen()->GetDisplayNearestPoint(
 815       gfx::Point(0, -100)).id());
 816   EXPECT_EQ(primary_display.id(), Shell::GetScreen()->GetDisplayNearestPoint(
 817       gfx::Point(100, 100)).id());
 818   EXPECT_EQ(primary_display.id(), Shell::GetScreen()->GetDisplayNearestPoint(
 819       gfx::Point(224, 25)).id());
 820   EXPECT_EQ(secondary_display.id(), Shell::GetScreen()->GetDisplayNearestPoint(
 821       gfx::Point(226, 25)).id());
 822   EXPECT_EQ(secondary_display.id(), Shell::GetScreen()->GetDisplayNearestPoint(
 823       gfx::Point(600, 100)).id());
 824   EXPECT_EQ(primary_display.id(), Shell::GetScreen()->GetDisplayNearestPoint(
 825       gfx::Point(174, 225)).id());
 826   EXPECT_EQ(secondary_display.id(), Shell::GetScreen()->GetDisplayNearestPoint(
 827       gfx::Point(176, 225)).id());
 828   EXPECT_EQ(secondary_display.id(), Shell::GetScreen()->GetDisplayNearestPoint(
 829       gfx::Point(300, 400)).id());
 830 }
 831
 832 TEST_F(DisplayControllerTest, SwapPrimaryById) {
 833   if (!SupportsMultipleDisplays())
 834     return;
 835
 836   DisplayController* display_controller =
 837       Shell::GetInstance()->display_controller();
 838   DisplayManager* display_manager = Shell::GetInstance()->display_manager();
 839
 840   UpdateDisplay("200x200,300x300");
 841   gfx::Display primary_display = Shell::GetScreen()->GetPrimaryDisplay();
 842   gfx::Display secondary_display = ScreenUtil::GetSecondaryDisplay();
 843
 844   DisplayLayout display_layout(DisplayLayout::RIGHT, 50);
 845   display_manager->SetLayoutForCurrentDisplays(display_layout);
 846
 847   EXPECT_NE(primary_display.id(), secondary_display.id());
 848   aura::Window* primary_root =
 849       display_controller->GetRootWindowForDisplayId(primary_display.id());
 850   aura::Window* secondary_root =
 851       display_controller->GetRootWindowForDisplayId(secondary_display.id());
 852   aura::Window* shelf_window =
 853       Shelf::ForPrimaryDisplay()->shelf_widget()->GetNativeView();
 854   EXPECT_TRUE(primary_root->Contains(shelf_window));
 855   EXPECT_FALSE(secondary_root->Contains(shelf_window));
 856   EXPECT_NE(primary_root, secondary_root);
 857   EXPECT_EQ(primary_display.id(),
 858             Shell::GetScreen()->GetDisplayNearestPoint(
 859                 gfx::Point(-100, -100)).id());
 860   EXPECT_EQ(primary_display.id(),
 861             Shell::GetScreen()->GetDisplayNearestWindow(NULL).id());
 862
 863   // Switch primary and secondary by display ID.
 864   TestObserver observer;
 865   display_controller->SetPrimaryDisplayId(secondary_display.id());
 866   EXPECT_EQ(secondary_display.id(),
 867             Shell::GetScreen()->GetPrimaryDisplay().id());
 868   EXPECT_EQ(primary_display.id(), ScreenUtil::GetSecondaryDisplay().id());
 869   EXPECT_LT(0, observer.CountAndReset());
 870
 871   EXPECT_EQ(
 872       primary_root,
 873       display_controller->GetRootWindowForDisplayId(secondary_display.id()));
 874   EXPECT_EQ(
 875       secondary_root,
 876       display_controller->GetRootWindowForDisplayId(primary_display.id()));
 877   EXPECT_TRUE(primary_root->Contains(shelf_window));
 878   EXPECT_FALSE(secondary_root->Contains(shelf_window));
 879
 880   const DisplayLayout& inverted_layout =
 881       display_manager->GetCurrentDisplayLayout();
 882
 883   EXPECT_EQ("left, -50", inverted_layout.ToString());
 884
 885   // Calling the same ID don't do anything.
 886   display_controller->SetPrimaryDisplayId(secondary_display.id());
 887   EXPECT_EQ(0, observer.CountAndReset());
 888
 889   aura::WindowTracker tracker;
 890   tracker.Add(primary_root);
 891   tracker.Add(secondary_root);
 892
 893   // Deleting 2nd display should move the primary to original primary display.
 894   UpdateDisplay("200x200");
 895   RunAllPendingInMessageLoop();  // RootWindow is deleted in a posted task.
 896   EXPECT_EQ(1, Shell::GetScreen()->GetNumDisplays());
 897   EXPECT_EQ(primary_display.id(), Shell::GetScreen()->GetPrimaryDisplay().id());
 898   EXPECT_EQ(primary_display.id(),
 899             Shell::GetScreen()->GetDisplayNearestPoint(
 900                 gfx::Point(-100, -100)).id());
 901   EXPECT_EQ(primary_display.id(),
 902             Shell::GetScreen()->GetDisplayNearestWindow(NULL).id());
 903   EXPECT_TRUE(tracker.Contains(primary_root));
 904   EXPECT_FALSE(tracker.Contains(secondary_root));
 905   EXPECT_TRUE(primary_root->Contains(shelf_window));
 906
 907   // Adding 2nd display with the same ID.  The 2nd display should become primary
 908   // since secondary id is still stored as desirable_primary_id.
 909   std::vector<DisplayInfo> display_info_list;
 910   display_info_list.push_back(
 911       display_manager->GetDisplayInfo(primary_display.id()));
 912   display_info_list.push_back(
 913       display_manager->GetDisplayInfo(secondary_display.id()));
 914   display_manager->OnNativeDisplaysChanged(display_info_list);
 915
 916   EXPECT_EQ(2, Shell::GetScreen()->GetNumDisplays());
 917   EXPECT_EQ(secondary_display.id(),
 918             Shell::GetScreen()->GetPrimaryDisplay().id());
 919   EXPECT_EQ(primary_display.id(), ScreenUtil::GetSecondaryDisplay().id());
 920   EXPECT_EQ(
 921       primary_root,
 922       display_controller->GetRootWindowForDisplayId(secondary_display.id()));
 923   EXPECT_NE(
 924       primary_root,
 925       display_controller->GetRootWindowForDisplayId(primary_display.id()));
 926   EXPECT_TRUE(primary_root->Contains(shelf_window));
 927
 928   // Deleting 2nd display and adding 2nd display with a different ID.  The 2nd
 929   // display shouldn't become primary.
 930   UpdateDisplay("200x200");
 931   DisplayInfo third_display_info(
 932       secondary_display.id() + 1, std::string(), false);
 933   third_display_info.SetBounds(secondary_display.bounds());
 934   ASSERT_NE(primary_display.id(), third_display_info.id());
 935
 936   const DisplayInfo& primary_display_info =
 937       display_manager->GetDisplayInfo(primary_display.id());
 938   std::vector<DisplayInfo> display_info_list2;
 939   display_info_list2.push_back(primary_display_info);
 940   display_info_list2.push_back(third_display_info);
 941   display_manager->OnNativeDisplaysChanged(display_info_list2);
 942   EXPECT_EQ(2, Shell::GetScreen()->GetNumDisplays());
 943   EXPECT_EQ(primary_display.id(),
 944             Shell::GetScreen()->GetPrimaryDisplay().id());
 945   EXPECT_EQ(third_display_info.id(), ScreenUtil::GetSecondaryDisplay().id());
 946   EXPECT_EQ(
 947       primary_root,
 948       display_controller->GetRootWindowForDisplayId(primary_display.id()));
 949   EXPECT_NE(
 950       primary_root,
 951       display_controller->GetRootWindowForDisplayId(third_display_info.id()));
 952   EXPECT_TRUE(primary_root->Contains(shelf_window));
 953 }
 954
 955 TEST_F(DisplayControllerTest, CursorDeviceScaleFactorSwapPrimary) {
 956   if (!SupportsMultipleDisplays())
 957     return;
 958
 959   DisplayController* display_controller =
 960       Shell::GetInstance()->display_controller();
 961
 962   UpdateDisplay("200x200,200x200*2");
 963   gfx::Display primary_display = Shell::GetScreen()->GetPrimaryDisplay();
 964   gfx::Display secondary_display = ScreenUtil::GetSecondaryDisplay();
 965
 966   aura::Window* primary_root =
 967       display_controller->GetRootWindowForDisplayId(primary_display.id());
 968   aura::Window* secondary_root =
 969       display_controller->GetRootWindowForDisplayId(secondary_display.id());
 970   EXPECT_NE(primary_root, secondary_root);
 971
 972   test::CursorManagerTestApi test_api(Shell::GetInstance()->cursor_manager());
 973
 974   EXPECT_EQ(1.0f, primary_root->GetHost()->compositor()->
 975       device_scale_factor());
 976   primary_root->MoveCursorTo(gfx::Point(50, 50));
 977   EXPECT_EQ(1.0f, test_api.GetCurrentCursor().device_scale_factor());
 978   EXPECT_EQ(2.0f, secondary_root->GetHost()->compositor()->
 979       device_scale_factor());
 980   secondary_root->MoveCursorTo(gfx::Point(50, 50));
 981   EXPECT_EQ(2.0f, test_api.GetCurrentCursor().device_scale_factor());
 982
 983   // Switch primary and secondary
 984   display_controller->SetPrimaryDisplay(secondary_display);
 985
 986   // Cursor's device scale factor should be updated accroding to the swap of
 987   // primary and secondary.
 988   EXPECT_EQ(1.0f, secondary_root->GetHost()->compositor()->
 989       device_scale_factor());
 990   secondary_root->MoveCursorTo(gfx::Point(50, 50));
 991   EXPECT_EQ(1.0f, test_api.GetCurrentCursor().device_scale_factor());
 992   primary_root->MoveCursorTo(gfx::Point(50, 50));
 993   EXPECT_EQ(2.0f, primary_root->GetHost()->compositor()->
 994       device_scale_factor());
 995   EXPECT_EQ(2.0f, test_api.GetCurrentCursor().device_scale_factor());
 996
 997   // Deleting 2nd display.
 998   UpdateDisplay("200x200");
 999   RunAllPendingInMessageLoop();  // RootWindow is deleted in a posted task.
1000
1001   // Cursor's device scale factor should be updated even without moving cursor.
1002   EXPECT_EQ(1.0f, test_api.GetCurrentCursor().device_scale_factor());
1003
1004   primary_root->MoveCursorTo(gfx::Point(50, 50));
1005   EXPECT_EQ(1.0f, primary_root->GetHost()->compositor()->
1006       device_scale_factor());
1007   EXPECT_EQ(1.0f, test_api.GetCurrentCursor().device_scale_factor());
1008 }
1009
1010 TEST_F(DisplayControllerTest, OverscanInsets) {
1011   if (!SupportsMultipleDisplays())
1012     return;
1013
1014   DisplayController* display_controller =
1015       Shell::GetInstance()->display_controller();
1016   TestEventHandler event_handler;
1017   Shell::GetInstance()->AddPreTargetHandler(&event_handler);
1018
1019   UpdateDisplay("120x200,300x400*2");
1020   gfx::Display display1 = Shell::GetScreen()->GetPrimaryDisplay();
1021   aura::Window::Windows root_windows = Shell::GetAllRootWindows();
1022
1023   display_controller->SetOverscanInsets(display1.id(),
1024                                         gfx::Insets(10, 15, 20, 25));
1025   EXPECT_EQ("0,0 80x170", root_windows[0]->bounds().ToString());
1026   EXPECT_EQ("150x200", root_windows[1]->bounds().size().ToString());
1027   EXPECT_EQ("80,0 150x200",
1028             ScreenUtil::GetSecondaryDisplay().bounds().ToString());
1029
1030   ui::test::EventGenerator generator(root_windows[0]);
1031   generator.MoveMouseToInHost(20, 25);
1032   EXPECT_EQ("5,15", event_handler.GetLocationAndReset());
1033
1034   display_controller->SetOverscanInsets(display1.id(), gfx::Insets());
1035   EXPECT_EQ("0,0 120x200", root_windows[0]->bounds().ToString());
1036   EXPECT_EQ("120,0 150x200",
1037             ScreenUtil::GetSecondaryDisplay().bounds().ToString());
1038
1039   generator.MoveMouseToInHost(30, 20);
1040   EXPECT_EQ("30,20", event_handler.GetLocationAndReset());
1041
1042   // Make sure the root window transformer uses correct scale
1043   // factor when swapping display. Test crbug.com/253690.
1044   UpdateDisplay("400x300*2,600x400/o");
1045   root_windows = Shell::GetAllRootWindows();
1046   gfx::Point point;
1047   Shell::GetAllRootWindows()[1]->GetHost()->
1048       GetRootTransform().TransformPoint(&point);
1049   EXPECT_EQ("15,10", point.ToString());
1050
1051   display_controller->SwapPrimaryDisplay();
1052   point.SetPoint(0, 0);
1053   Shell::GetAllRootWindows()[1]->GetHost()->
1054       GetRootTransform().TransformPoint(&point);
1055   EXPECT_EQ("15,10", point.ToString());
1056
1057   Shell::GetInstance()->RemovePreTargetHandler(&event_handler);
1058 }
1059
1060 TEST_F(DisplayControllerTest, Rotate) {
1061   if (!SupportsMultipleDisplays())
1062     return;
1063
1064   DisplayManager* display_manager = Shell::GetInstance()->display_manager();
1065   TestEventHandler event_handler;
1066   Shell::GetInstance()->AddPreTargetHandler(&event_handler);
1067
1068   UpdateDisplay("120x200,300x400*2");
1069   gfx::Display display1 = Shell::GetScreen()->GetPrimaryDisplay();
1070   int64 display2_id = ScreenUtil::GetSecondaryDisplay().id();
1071   aura::Window::Windows root_windows = Shell::GetAllRootWindows();
1072   ui::test::EventGenerator generator1(root_windows[0]);
1073
1074   TestObserver observer;
1075   EXPECT_EQ("120x200", root_windows[0]->bounds().size().ToString());
1076   EXPECT_EQ("150x200", root_windows[1]->bounds().size().ToString());
1077   EXPECT_EQ("120,0 150x200",
1078             ScreenUtil::GetSecondaryDisplay().bounds().ToString());
1079   generator1.MoveMouseToInHost(50, 40);
1080   EXPECT_EQ("50,40", event_handler.GetLocationAndReset());
1081   EXPECT_EQ(gfx::Display::ROTATE_0, GetStoredRotation(display1.id()));
1082   EXPECT_EQ(gfx::Display::ROTATE_0, GetStoredRotation(display2_id));
1083   EXPECT_EQ(0, observer.GetRotationChangedCountAndReset());
1084
1085   display_manager->SetDisplayRotation(display1.id(),
1086                                       gfx::Display::ROTATE_90);
1087   EXPECT_EQ("200x120", root_windows[0]->bounds().size().ToString());
1088   EXPECT_EQ("150x200", root_windows[1]->bounds().size().ToString());
1089   EXPECT_EQ("200,0 150x200",
1090             ScreenUtil::GetSecondaryDisplay().bounds().ToString());
1091   generator1.MoveMouseToInHost(50, 40);
1092   EXPECT_EQ("40,69", event_handler.GetLocationAndReset());
1093   EXPECT_EQ(gfx::Display::ROTATE_90, GetStoredRotation(display1.id()));
1094   EXPECT_EQ(gfx::Display::ROTATE_0, GetStoredRotation(display2_id));
1095   EXPECT_EQ(1, observer.GetRotationChangedCountAndReset());
1096
1097   DisplayLayout display_layout(DisplayLayout::BOTTOM, 50);
1098   display_manager->SetLayoutForCurrentDisplays(display_layout);
1099   EXPECT_EQ("50,120 150x200",
1100             ScreenUtil::GetSecondaryDisplay().bounds().ToString());
1101
1102   display_manager->SetDisplayRotation(display2_id,
1103                                       gfx::Display::ROTATE_270);
1104   EXPECT_EQ("200x120", root_windows[0]->bounds().size().ToString());
1105   EXPECT_EQ("200x150", root_windows[1]->bounds().size().ToString());
1106   EXPECT_EQ("50,120 200x150",
1107             ScreenUtil::GetSecondaryDisplay().bounds().ToString());
1108   EXPECT_EQ(gfx::Display::ROTATE_90, GetStoredRotation(display1.id()));
1109   EXPECT_EQ(gfx::Display::ROTATE_270, GetStoredRotation(display2_id));
1110   EXPECT_EQ(1, observer.GetRotationChangedCountAndReset());
1111
1112 #if !defined(OS_WIN)
1113   ui::test::EventGenerator generator2(root_windows[1]);
1114   generator2.MoveMouseToInHost(50, 40);
1115   EXPECT_EQ("179,25", event_handler.GetLocationAndReset());
1116   display_manager->SetDisplayRotation(display1.id(),
1117                                       gfx::Display::ROTATE_180);
1118
1119   EXPECT_EQ("120x200", root_windows[0]->bounds().size().ToString());
1120   EXPECT_EQ("200x150", root_windows[1]->bounds().size().ToString());
1121   // Dislay must share at least 100, so the x's offset becomes 20.
1122   EXPECT_EQ("20,200 200x150",
1123             ScreenUtil::GetSecondaryDisplay().bounds().ToString());
1124   EXPECT_EQ(gfx::Display::ROTATE_180, GetStoredRotation(display1.id()));
1125   EXPECT_EQ(gfx::Display::ROTATE_270, GetStoredRotation(display2_id));
1126   EXPECT_EQ(1, observer.GetRotationChangedCountAndReset());
1127
1128   generator1.MoveMouseToInHost(50, 40);
1129   EXPECT_EQ("69,159", event_handler.GetLocationAndReset());
1130 #endif
1131
1132   Shell::GetInstance()->RemovePreTargetHandler(&event_handler);
1133 }
1134
1135 TEST_F(DisplayControllerTest, ScaleRootWindow) {
1136   if (!SupportsMultipleDisplays())
1137     return;
1138
1139   TestEventHandler event_handler;
1140   Shell::GetInstance()->AddPreTargetHandler(&event_handler);
1141
1142   UpdateDisplay("600x400*2@1.5,500x300");
1143
1144   gfx::Display display1 = Shell::GetScreen()->GetPrimaryDisplay();
1145   gfx::Display::SetInternalDisplayId(display1.id());
1146
1147   gfx::Display display2 = ScreenUtil::GetSecondaryDisplay();
1148   aura::Window::Windows root_windows = Shell::GetAllRootWindows();
1149   EXPECT_EQ("0,0 450x300", display1.bounds().ToString());
1150   EXPECT_EQ("0,0 450x300", root_windows[0]->bounds().ToString());
1151   EXPECT_EQ("450,0 500x300", display2.bounds().ToString());
1152   EXPECT_EQ(1.5f, GetStoredUIScale(display1.id()));
1153   EXPECT_EQ(1.0f, GetStoredUIScale(display2.id()));
1154
1155   ui::test::EventGenerator generator(root_windows[0]);
1156   generator.MoveMouseToInHost(599, 200);
1157   EXPECT_EQ("449,150", event_handler.GetLocationAndReset());
1158
1159   DisplayManager* display_manager = Shell::GetInstance()->display_manager();
1160   display_manager->SetDisplayUIScale(display1.id(), 1.25f);
1161   display1 = Shell::GetScreen()->GetPrimaryDisplay();
1162   display2 = ScreenUtil::GetSecondaryDisplay();
1163   EXPECT_EQ("0,0 375x250", display1.bounds().ToString());
1164   EXPECT_EQ("0,0 375x250", root_windows[0]->bounds().ToString());
1165   EXPECT_EQ("375,0 500x300", display2.bounds().ToString());
1166   EXPECT_EQ(1.25f, GetStoredUIScale(display1.id()));
1167   EXPECT_EQ(1.0f, GetStoredUIScale(display2.id()));
1168
1169   Shell::GetInstance()->RemovePreTargetHandler(&event_handler);
1170 }
1171
1172 TEST_F(DisplayControllerTest, TouchScale) {
1173   if (!SupportsMultipleDisplays())
1174     return;
1175
1176   TestEventHandler event_handler;
1177   Shell::GetInstance()->AddPreTargetHandler(&event_handler);
1178
1179   UpdateDisplay("200x200*2");
1180   gfx::Display display = Shell::GetScreen()->GetPrimaryDisplay();
1181   aura::Window::Windows root_windows = Shell::GetAllRootWindows();
1182   aura::Window* root_window = root_windows[0];
1183   ui::test::EventGenerator generator(root_window);
1184
1185   generator.PressMoveAndReleaseTouchTo(50, 50);
1186   // Default test touches have radius_x/y = 1.0, with device scale
1187   // factor = 2, the scaled radius_x/y should be 0.5.
1188   EXPECT_EQ(0.5, event_handler.touch_radius_x());
1189   EXPECT_EQ(0.5, event_handler.touch_radius_y());
1190
1191   generator.ScrollSequence(gfx::Point(0,0),
1192                            base::TimeDelta::FromMilliseconds(100),
1193                            10.0, 1.0, 5, 1);
1194
1195   // ordinal_offset is invariant to the device scale factor.
1196   EXPECT_EQ(event_handler.scroll_x_offset(),
1197             event_handler.scroll_x_offset_ordinal());
1198   EXPECT_EQ(event_handler.scroll_y_offset(),
1199             event_handler.scroll_y_offset_ordinal());
1200
1201   Shell::GetInstance()->RemovePreTargetHandler(&event_handler);
1202 }
1203
1204 TEST_F(DisplayControllerTest, ConvertHostToRootCoords) {
1205   if (!SupportsMultipleDisplays())
1206     return;
1207
1208   TestEventHandler event_handler;
1209   Shell::GetInstance()->AddPreTargetHandler(&event_handler);
1210
1211   UpdateDisplay("600x400*2/r@1.5");
1212
1213   gfx::Display display1 = Shell::GetScreen()->GetPrimaryDisplay();
1214   aura::Window::Windows root_windows = Shell::GetAllRootWindows();
1215   EXPECT_EQ("0,0 300x450", display1.bounds().ToString());
1216   EXPECT_EQ("0,0 300x450", root_windows[0]->bounds().ToString());
1217   EXPECT_EQ(1.5f, GetStoredUIScale(display1.id()));
1218
1219   ui::test::EventGenerator generator(root_windows[0]);
1220   generator.MoveMouseToInHost(0, 0);
1221   EXPECT_EQ("0,449", event_handler.GetLocationAndReset());
1222   generator.MoveMouseToInHost(599, 0);
1223   EXPECT_EQ("0,0", event_handler.GetLocationAndReset());
1224   generator.MoveMouseToInHost(599, 399);
1225   EXPECT_EQ("299,0", event_handler.GetLocationAndReset());
1226   generator.MoveMouseToInHost(0, 399);
1227   EXPECT_EQ("299,449", event_handler.GetLocationAndReset());
1228
1229   UpdateDisplay("600x400*2/u@1.5");
1230   display1 = Shell::GetScreen()->GetPrimaryDisplay();
1231   root_windows = Shell::GetAllRootWindows();
1232   EXPECT_EQ("0,0 450x300", display1.bounds().ToString());
1233   EXPECT_EQ("0,0 450x300", root_windows[0]->bounds().ToString());
1234   EXPECT_EQ(1.5f, GetStoredUIScale(display1.id()));
1235
1236   generator.MoveMouseToInHost(0, 0);
1237   EXPECT_EQ("449,299", event_handler.GetLocationAndReset());
1238   generator.MoveMouseToInHost(599, 0);
1239   EXPECT_EQ("0,299", event_handler.GetLocationAndReset());
1240   generator.MoveMouseToInHost(599, 399);
1241   EXPECT_EQ("0,0", event_handler.GetLocationAndReset());
1242   generator.MoveMouseToInHost(0, 399);
1243   EXPECT_EQ("449,0", event_handler.GetLocationAndReset());
1244
1245   UpdateDisplay("600x400*2/l@1.5");
1246   display1 = Shell::GetScreen()->GetPrimaryDisplay();
1247   root_windows = Shell::GetAllRootWindows();
1248   EXPECT_EQ("0,0 300x450", display1.bounds().ToString());
1249   EXPECT_EQ("0,0 300x450", root_windows[0]->bounds().ToString());
1250   EXPECT_EQ(1.5f, GetStoredUIScale(display1.id()));
1251
1252   generator.MoveMouseToInHost(0, 0);
1253   EXPECT_EQ("299,0", event_handler.GetLocationAndReset());
1254   generator.MoveMouseToInHost(599, 0);
1255   EXPECT_EQ("299,449", event_handler.GetLocationAndReset());
1256   generator.MoveMouseToInHost(599, 399);
1257   EXPECT_EQ("0,449", event_handler.GetLocationAndReset());
1258   generator.MoveMouseToInHost(0, 399);
1259   EXPECT_EQ("0,0", event_handler.GetLocationAndReset());
1260
1261   Shell::GetInstance()->RemovePreTargetHandler(&event_handler);
1262 }
1263
1264 namespace {
1265
1266 DisplayInfo CreateDisplayInfo(int64 id,
1267                               int y,
1268                               gfx::Display::Rotation rotation) {
1269   DisplayInfo info(id, "", false);
1270   info.SetBounds(gfx::Rect(0, y, 500, 500));
1271   info.set_rotation(rotation);
1272   return info;
1273 }
1274
1275 }  // namespace
1276
1277 // Make sure that the compositor based mirroring can switch
1278 // from/to dock mode.
1279 TEST_F(DisplayControllerTest, DockToSingle) {
1280   if (!SupportsMultipleDisplays())
1281     return;
1282
1283   DisplayManager* display_manager = Shell::GetInstance()->display_manager();
1284
1285   const int64 internal_id = 1;
1286
1287   const DisplayInfo internal_display_info =
1288       CreateDisplayInfo(internal_id, 0, gfx::Display::ROTATE_0);
1289   const DisplayInfo external_display_info =
1290       CreateDisplayInfo(2, 1, gfx::Display::ROTATE_90);
1291
1292   std::vector<DisplayInfo> display_info_list;
1293   // Extended
1294   display_info_list.push_back(internal_display_info);
1295   display_info_list.push_back(external_display_info);
1296   display_manager->OnNativeDisplaysChanged(display_info_list);
1297   const int64 internal_display_id =
1298       test::DisplayManagerTestApi(display_manager).
1299       SetFirstDisplayAsInternalDisplay();
1300   EXPECT_EQ(internal_id, internal_display_id);
1301   EXPECT_EQ(2U, display_manager->GetNumDisplays());
1302
1303   // Dock mode.
1304   display_info_list.clear();
1305   display_info_list.push_back(external_display_info);
1306   display_manager->OnNativeDisplaysChanged(display_info_list);
1307   EXPECT_EQ(1U, display_manager->GetNumDisplays());
1308   EXPECT_FALSE(Shell::GetPrimaryRootWindow()->GetHost()->
1309                GetRootTransform().IsIdentityOrIntegerTranslation());
1310
1311   // Switch to single mode and make sure the transform is the one
1312   // for the internal display.
1313   display_info_list.clear();
1314   display_info_list.push_back(internal_display_info);
1315   display_manager->OnNativeDisplaysChanged(display_info_list);
1316   EXPECT_TRUE(Shell::GetPrimaryRootWindow()->GetHost()->
1317               GetRootTransform().IsIdentityOrIntegerTranslation());
1318 }
1319
1320 #if defined(USE_X11)
1321 TEST_F(DisplayControllerTest, XWidowNameForRootWindow) {
1322   EXPECT_EQ("aura_root_0", GetXWindowName(
1323       Shell::GetPrimaryRootWindow()->GetHost()));
1324
1325   // Multiple display.
1326   UpdateDisplay("200x200,300x300");
1327   aura::Window* primary, *secondary;
1328   GetPrimaryAndSeconary(&primary, &secondary);
1329   EXPECT_EQ("aura_root_0", GetXWindowName(primary->GetHost()));
1330   EXPECT_EQ("aura_root_x", GetXWindowName(secondary->GetHost()));
1331
1332   // Swap primary.
1333   primary = secondary = NULL;
1334   Shell::GetInstance()->display_controller()->SwapPrimaryDisplay();
1335   GetPrimaryAndSeconary(&primary, &secondary);
1336   EXPECT_EQ("aura_root_0", GetXWindowName(primary->GetHost()));
1337   EXPECT_EQ("aura_root_x", GetXWindowName(secondary->GetHost()));
1338
1339   // Switching back to single display.
1340   UpdateDisplay("300x400");
1341   EXPECT_EQ("aura_root_0", GetXWindowName(
1342       Shell::GetPrimaryRootWindow()->GetHost()));
1343 }
1344 #endif
1345
1346 }  // namespace ash