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/test/event_generator.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/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         changed_display_id_(0),
  73         focus_changed_count_(0),
  74         activation_changed_count_(0) {
  75     Shell::GetInstance()->display_controller()->AddObserver(this);
  76     Shell::GetScreen()->AddObserver(this);
  77     aura::client::GetFocusClient(Shell::GetPrimaryRootWindow())->
  78         AddObserver(this);
  79     aura::client::GetActivationClient(Shell::GetPrimaryRootWindow())->
  80         AddObserver(this);
  81   }
  82
  83   virtual ~TestObserver() {
  84     Shell::GetInstance()->display_controller()->RemoveObserver(this);
  85     Shell::GetScreen()->RemoveObserver(this);
  86     aura::client::GetFocusClient(Shell::GetPrimaryRootWindow())->
  87         RemoveObserver(this);
  88     aura::client::GetActivationClient(Shell::GetPrimaryRootWindow())->
  89         RemoveObserver(this);
  90   }
  91
  92   // Overridden from DisplayController::Observer
  93   virtual void OnDisplayConfigurationChanging() OVERRIDE {
  94     ++changing_count_;
  95   }
  96   virtual void OnDisplayConfigurationChanged() OVERRIDE {
  97     ++changed_count_;
  98   }
  99
 100   // Overrideen from gfx::DisplayObserver
 101   virtual void OnDisplayMetricsChanged(const gfx::Display& display,
 102                                        uint32_t metrics) OVERRIDE {
 103     changed_display_id_ = display.id();
 104     if (metrics & DISPLAY_METRIC_BOUNDS)
 105       ++bounds_changed_count_;
 106     if (metrics & DISPLAY_METRIC_ROTATION)
 107       ++rotation_changed_count_;
 108     if (metrics & DISPLAY_METRIC_WORK_AREA)
 109       ++workarea_changed_count_;
 110   }
 111   virtual void OnDisplayAdded(const gfx::Display& new_display) OVERRIDE {
 112   }
 113   virtual void OnDisplayRemoved(const gfx::Display& old_display) OVERRIDE {
 114   }
 115
 116   // Overridden from aura::client::FocusChangeObserver
 117   virtual void OnWindowFocused(aura::Window* gained_focus,
 118                                aura::Window* lost_focus) OVERRIDE {
 119     focus_changed_count_++;
 120   }
 121
 122   // Overridden from aura::client::ActivationChangeObserver
 123   virtual void OnWindowActivated(aura::Window* gained_active,
 124                                  aura::Window* lost_active) OVERRIDE {
 125     activation_changed_count_++;
 126   }
 127   virtual void OnAttemptToReactivateWindow(
 128       aura::Window* request_active,
 129       aura::Window* actual_active) OVERRIDE {
 130   }
 131
 132   int CountAndReset() {
 133     EXPECT_EQ(changing_count_, changed_count_);
 134     changed_count_ = 0;
 135     return Resetter<int>(&changing_count_).value();
 136   }
 137
 138   int64 GetBoundsChangedCountAndReset() {
 139     return Resetter<int>(&bounds_changed_count_).value();
 140   }
 141
 142   int64 GetRotationChangedCountAndReset() {
 143     return Resetter<int>(&rotation_changed_count_).value();
 144   }
 145
 146   int64 GetWorkareaChangedCountAndReset() {
 147     return Resetter<int>(&workarea_changed_count_).value();
 148   }
 149
 150   int64 GetChangedDisplayIdAndReset() {
 151     return Resetter<int64>(&changed_display_id_).value();
 152   }
 153
 154   int GetFocusChangedCountAndReset() {
 155     return Resetter<int>(&focus_changed_count_).value();
 156   }
 157
 158   int GetActivationChangedCountAndReset() {
 159     return Resetter<int>(&activation_changed_count_).value();
 160   }
 161
 162  private:
 163   int changing_count_;
 164   int changed_count_;
 165
 166   int bounds_changed_count_;
 167   int rotation_changed_count_;
 168   int workarea_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   virtual ~DisplayControllerShutdownTest() {}
 208
 209   virtual 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   virtual ~StartupHelper() {}
 229
 230   // ash::ShellSelegate:
 231   virtual void PreInit() OVERRIDE {
 232     Shell::GetInstance()->display_controller()->AddObserver(this);
 233   }
 234
 235   // ash::DisplayController::Observer:
 236   virtual void OnDisplaysInitialized() OVERRIDE {
 237     DCHECK(!displays_initialized_);
 238     displays_initialized_ = true;
 239   }
 240
 241   const 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   virtual ~DisplayControllerStartupTest() {}
 255
 256   // ash::test::AshTestBase:
 257   virtual void SetUp() OVERRIDE {
 258     ash_test_helper()->set_test_shell_delegate(startup_helper_);
 259     test::AshTestBase::SetUp();
 260   }
 261   virtual 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   virtual ~TestEventHandler() {}
 284
 285   virtual 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   virtual 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   virtual 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   // 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 =
 561       CreateDisplayInfo(1, gfx::Rect(0, 0, 500, 500), 2.0f);
 562   const DisplayInfo external_display_info =
 563       CreateDisplayInfo(2, gfx::Rect(0, 0, 500, 500), 1.0f);
 564
 565   std::vector<DisplayInfo> display_info_list;
 566   // Mirror.
 567   display_info_list.push_back(internal_display_info);
 568   display_info_list.push_back(external_display_info);
 569   display_manager->OnNativeDisplaysChanged(display_info_list);
 570   const int64 internal_display_id =
 571       test::DisplayManagerTestApi(display_manager).
 572       SetFirstDisplayAsInternalDisplay();
 573   EXPECT_EQ(1, internal_display_id);
 574   EXPECT_EQ(2U, display_manager->num_connected_displays());
 575   EXPECT_EQ(1U, display_manager->GetNumDisplays());
 576
 577   wm::WindowState* window_state = wm::GetWindowState(w1.get());
 578   const wm::WMEvent toggle_fullscreen_event(wm::WM_EVENT_TOGGLE_FULLSCREEN);
 579   window_state->OnWMEvent(&toggle_fullscreen_event);
 580   EXPECT_TRUE(window_state->IsFullscreen());
 581   EXPECT_EQ("0,0 250x250", w1->bounds().ToString());
 582   // Dock mode.
 583   TestObserver observer;
 584   display_info_list.clear();
 585   display_info_list.push_back(external_display_info);
 586   display_manager->OnNativeDisplaysChanged(display_info_list);
 587   EXPECT_EQ(1U, display_manager->GetNumDisplays());
 588   EXPECT_EQ(1U, display_manager->num_connected_displays());
 589   EXPECT_EQ(0, observer.GetChangedDisplayIdAndReset());
 590   EXPECT_EQ(0, observer.GetBoundsChangedCountAndReset());
 591   EXPECT_EQ(0, observer.GetWorkareaChangedCountAndReset());
 592   EXPECT_EQ(1, observer.CountAndReset());
 593   EXPECT_EQ(0, observer.GetFocusChangedCountAndReset());
 594   EXPECT_EQ(0, observer.GetActivationChangedCountAndReset());
 595
 596   EXPECT_TRUE(window_state->IsFullscreen());
 597   EXPECT_EQ("0,0 500x500", w1->bounds().ToString());
 598 }
 599
 600 TEST_F(DisplayControllerTest, BoundsUpdated) {
 601   if (!SupportsMultipleDisplays())
 602     return;
 603
 604   // Creates windows to catch activation change event.
 605   scoped_ptr<aura::Window> w1(CreateTestWindowInShellWithId(1));
 606   w1->Focus();
 607
 608   TestObserver observer;
 609   SetDefaultDisplayLayout(DisplayLayout::BOTTOM);
 610   UpdateDisplay("200x200,300x300");  // layout, resize and add.
 611   EXPECT_EQ(1, observer.CountAndReset());
 612   EXPECT_EQ(0, observer.GetFocusChangedCountAndReset());
 613   EXPECT_EQ(0, observer.GetActivationChangedCountAndReset());
 614
 615   DisplayManager* display_manager = Shell::GetInstance()->display_manager();
 616   gfx::Insets insets(5, 5, 5, 5);
 617   display_manager->UpdateWorkAreaOfDisplay(
 618       ScreenUtil::GetSecondaryDisplay().id(), insets);
 619
 620   EXPECT_EQ("0,0 200x200", GetPrimaryDisplay().bounds().ToString());
 621   EXPECT_EQ("0,200 300x300", GetSecondaryDisplay().bounds().ToString());
 622   EXPECT_EQ("5,205 290x290", GetSecondaryDisplay().work_area().ToString());
 623
 624   UpdateDisplay("400x400,200x200");
 625   EXPECT_EQ(1, observer.CountAndReset());  // two resizes
 626   EXPECT_EQ(0, observer.GetFocusChangedCountAndReset());
 627   EXPECT_EQ(0, observer.GetActivationChangedCountAndReset());
 628   EXPECT_EQ("0,0 400x400", GetPrimaryDisplay().bounds().ToString());
 629   EXPECT_EQ("0,400 200x200", GetSecondaryDisplay().bounds().ToString());
 630
 631   UpdateDisplay("400x400,300x300");
 632   EXPECT_EQ(1, observer.CountAndReset());
 633   EXPECT_EQ(0, observer.GetFocusChangedCountAndReset());
 634   EXPECT_EQ(0, observer.GetActivationChangedCountAndReset());
 635   EXPECT_EQ("0,0 400x400", GetPrimaryDisplay().bounds().ToString());
 636   EXPECT_EQ("0,400 300x300", GetSecondaryDisplay().bounds().ToString());
 637
 638   UpdateDisplay("400x400");
 639   EXPECT_EQ(1, observer.CountAndReset());
 640   EXPECT_LE(1, observer.GetFocusChangedCountAndReset());
 641   EXPECT_LE(1, observer.GetActivationChangedCountAndReset());
 642   EXPECT_EQ("0,0 400x400", GetPrimaryDisplay().bounds().ToString());
 643   EXPECT_EQ(1, Shell::GetScreen()->GetNumDisplays());
 644
 645   UpdateDisplay("400x500*2,300x300");
 646   EXPECT_EQ(1, observer.CountAndReset());
 647   EXPECT_EQ(0, observer.GetFocusChangedCountAndReset());
 648   EXPECT_EQ(0, observer.GetActivationChangedCountAndReset());
 649   ASSERT_EQ(2, Shell::GetScreen()->GetNumDisplays());
 650   EXPECT_EQ("0,0 200x250", GetPrimaryDisplay().bounds().ToString());
 651   EXPECT_EQ("0,250 300x300", GetSecondaryDisplay().bounds().ToString());
 652
 653   // No change
 654   UpdateDisplay("400x500*2,300x300");
 655   EXPECT_EQ(0, 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   EXPECT_EQ(1, observer.GetRotationChangedCountAndReset());
 664   EXPECT_EQ(1, observer.CountAndReset());
 665   EXPECT_EQ(0, observer.GetFocusChangedCountAndReset());
 666   EXPECT_EQ(0, observer.GetActivationChangedCountAndReset());
 667   display_manager->SetDisplayRotation(primary_id, gfx::Display::ROTATE_90);
 668   EXPECT_EQ(0, observer.GetRotationChangedCountAndReset());
 669   EXPECT_EQ(0, observer.CountAndReset());
 670   EXPECT_EQ(0, observer.GetFocusChangedCountAndReset());
 671   EXPECT_EQ(0, observer.GetActivationChangedCountAndReset());
 672
 673   // UI scale is eanbled only on internal display.
 674   int64 secondary_id = GetSecondaryDisplay().id();
 675   gfx::Display::SetInternalDisplayId(secondary_id);
 676   display_manager->SetDisplayUIScale(secondary_id, 1.125f);
 677   EXPECT_EQ(1, observer.CountAndReset());
 678   EXPECT_EQ(0, observer.GetFocusChangedCountAndReset());
 679   EXPECT_EQ(0, observer.GetActivationChangedCountAndReset());
 680   display_manager->SetDisplayUIScale(secondary_id, 1.125f);
 681   EXPECT_EQ(0, observer.CountAndReset());
 682   EXPECT_EQ(0, observer.GetFocusChangedCountAndReset());
 683   EXPECT_EQ(0, observer.GetActivationChangedCountAndReset());
 684   display_manager->SetDisplayUIScale(primary_id, 1.125f);
 685   EXPECT_EQ(0, observer.CountAndReset());
 686   EXPECT_EQ(0, observer.GetFocusChangedCountAndReset());
 687   EXPECT_EQ(0, observer.GetActivationChangedCountAndReset());
 688   display_manager->SetDisplayUIScale(primary_id, 1.125f);
 689   EXPECT_EQ(0, observer.CountAndReset());
 690   EXPECT_EQ(0, observer.GetFocusChangedCountAndReset());
 691   EXPECT_EQ(0, observer.GetActivationChangedCountAndReset());
 692 }
 693
 694 TEST_F(DisplayControllerTest, SwapPrimary) {
 695   if (!SupportsMultipleDisplays())
 696     return;
 697
 698   DisplayController* display_controller =
 699       Shell::GetInstance()->display_controller();
 700   DisplayManager* display_manager = Shell::GetInstance()->display_manager();
 701
 702   UpdateDisplay("200x200,300x300");
 703   gfx::Display primary_display = Shell::GetScreen()->GetPrimaryDisplay();
 704   gfx::Display secondary_display = ScreenUtil::GetSecondaryDisplay();
 705
 706   DisplayLayout display_layout(DisplayLayout::RIGHT, 50);
 707   display_manager->SetLayoutForCurrentDisplays(display_layout);
 708
 709   EXPECT_NE(primary_display.id(), secondary_display.id());
 710   aura::Window* primary_root =
 711       display_controller->GetRootWindowForDisplayId(primary_display.id());
 712   aura::Window* secondary_root =
 713       display_controller->GetRootWindowForDisplayId(secondary_display.id());
 714   EXPECT_NE(primary_root, secondary_root);
 715   aura::Window* shelf_window =
 716       Shelf::ForPrimaryDisplay()->shelf_widget()->GetNativeView();
 717   EXPECT_TRUE(primary_root->Contains(shelf_window));
 718   EXPECT_FALSE(secondary_root->Contains(shelf_window));
 719   EXPECT_EQ(primary_display.id(),
 720             Shell::GetScreen()->GetDisplayNearestPoint(
 721                 gfx::Point(-100, -100)).id());
 722   EXPECT_EQ(primary_display.id(),
 723             Shell::GetScreen()->GetDisplayNearestWindow(NULL).id());
 724
 725   EXPECT_EQ("0,0 200x200", primary_display.bounds().ToString());
 726   EXPECT_EQ("0,0 200x153", primary_display.work_area().ToString());
 727   EXPECT_EQ("200,0 300x300", secondary_display.bounds().ToString());
 728   EXPECT_EQ("200,0 300x253", secondary_display.work_area().ToString());
 729   EXPECT_EQ("right, 50",
 730             display_manager->GetCurrentDisplayLayout().ToString());
 731
 732   // Switch primary and secondary
 733   display_controller->SetPrimaryDisplay(secondary_display);
 734   const DisplayLayout& inverted_layout =
 735       display_manager->GetCurrentDisplayLayout();
 736   EXPECT_EQ("left, -50", inverted_layout.ToString());
 737
 738   EXPECT_EQ(secondary_display.id(),
 739             Shell::GetScreen()->GetPrimaryDisplay().id());
 740   EXPECT_EQ(primary_display.id(), ScreenUtil::GetSecondaryDisplay().id());
 741   EXPECT_EQ(primary_display.id(),
 742             Shell::GetScreen()->GetDisplayNearestPoint(
 743                 gfx::Point(-100, -100)).id());
 744   EXPECT_EQ(secondary_display.id(),
 745             Shell::GetScreen()->GetDisplayNearestWindow(NULL).id());
 746
 747   EXPECT_EQ(
 748       primary_root,
 749       display_controller->GetRootWindowForDisplayId(secondary_display.id()));
 750   EXPECT_EQ(
 751       secondary_root,
 752       display_controller->GetRootWindowForDisplayId(primary_display.id()));
 753   EXPECT_TRUE(primary_root->Contains(shelf_window));
 754   EXPECT_FALSE(secondary_root->Contains(shelf_window));
 755
 756   // Test if the bounds are correctly swapped.
 757   gfx::Display swapped_primary = Shell::GetScreen()->GetPrimaryDisplay();
 758   gfx::Display swapped_secondary = ScreenUtil::GetSecondaryDisplay();
 759   EXPECT_EQ("0,0 300x300", swapped_primary.bounds().ToString());
 760   EXPECT_EQ("0,0 300x253", swapped_primary.work_area().ToString());
 761   EXPECT_EQ("-200,-50 200x200", swapped_secondary.bounds().ToString());
 762
 763   EXPECT_EQ("-200,-50 200x153", swapped_secondary.work_area().ToString());
 764
 765   aura::WindowTracker tracker;
 766   tracker.Add(primary_root);
 767   tracker.Add(secondary_root);
 768
 769   // Deleting 2nd display should move the primary to original primary display.
 770   UpdateDisplay("200x200");
 771   RunAllPendingInMessageLoop();  // RootWindow is deleted in a posted task.
 772   EXPECT_EQ(1, Shell::GetScreen()->GetNumDisplays());
 773   EXPECT_EQ(primary_display.id(), Shell::GetScreen()->GetPrimaryDisplay().id());
 774   EXPECT_EQ(primary_display.id(),
 775             Shell::GetScreen()->GetDisplayNearestPoint(
 776                 gfx::Point(-100, -100)).id());
 777   EXPECT_EQ(primary_display.id(),
 778             Shell::GetScreen()->GetDisplayNearestWindow(NULL).id());
 779   EXPECT_TRUE(tracker.Contains(primary_root));
 780   EXPECT_FALSE(tracker.Contains(secondary_root));
 781   EXPECT_TRUE(primary_root->Contains(shelf_window));
 782 }
 783
 784 TEST_F(DisplayControllerTest, FindNearestDisplay) {
 785   if (!SupportsMultipleDisplays())
 786     return;
 787
 788   DisplayController* display_controller =
 789       Shell::GetInstance()->display_controller();
 790   DisplayManager* display_manager = Shell::GetInstance()->display_manager();
 791
 792   UpdateDisplay("200x200,300x300");
 793   DisplayLayout display_layout(DisplayLayout::RIGHT, 50);
 794   display_manager->SetLayoutForCurrentDisplays(display_layout);
 795
 796   gfx::Display primary_display = Shell::GetScreen()->GetPrimaryDisplay();
 797   gfx::Display secondary_display = ScreenUtil::GetSecondaryDisplay();
 798   EXPECT_NE(primary_display.id(), secondary_display.id());
 799   aura::Window* primary_root =
 800       display_controller->GetRootWindowForDisplayId(primary_display.id());
 801   aura::Window* secondary_root =
 802       display_controller->GetRootWindowForDisplayId(secondary_display.id());
 803   EXPECT_NE(primary_root, secondary_root);
 804
 805   // Test that points outside of any display return the nearest display.
 806   EXPECT_EQ(primary_display.id(), Shell::GetScreen()->GetDisplayNearestPoint(
 807       gfx::Point(-100, 0)).id());
 808   EXPECT_EQ(primary_display.id(), Shell::GetScreen()->GetDisplayNearestPoint(
 809       gfx::Point(0, -100)).id());
 810   EXPECT_EQ(primary_display.id(), Shell::GetScreen()->GetDisplayNearestPoint(
 811       gfx::Point(100, 100)).id());
 812   EXPECT_EQ(primary_display.id(), Shell::GetScreen()->GetDisplayNearestPoint(
 813       gfx::Point(224, 25)).id());
 814   EXPECT_EQ(secondary_display.id(), Shell::GetScreen()->GetDisplayNearestPoint(
 815       gfx::Point(226, 25)).id());
 816   EXPECT_EQ(secondary_display.id(), Shell::GetScreen()->GetDisplayNearestPoint(
 817       gfx::Point(600, 100)).id());
 818   EXPECT_EQ(primary_display.id(), Shell::GetScreen()->GetDisplayNearestPoint(
 819       gfx::Point(174, 225)).id());
 820   EXPECT_EQ(secondary_display.id(), Shell::GetScreen()->GetDisplayNearestPoint(
 821       gfx::Point(176, 225)).id());
 822   EXPECT_EQ(secondary_display.id(), Shell::GetScreen()->GetDisplayNearestPoint(
 823       gfx::Point(300, 400)).id());
 824 }
 825
 826 TEST_F(DisplayControllerTest, SwapPrimaryById) {
 827   if (!SupportsMultipleDisplays())
 828     return;
 829
 830   DisplayController* display_controller =
 831       Shell::GetInstance()->display_controller();
 832   DisplayManager* display_manager = Shell::GetInstance()->display_manager();
 833
 834   UpdateDisplay("200x200,300x300");
 835   gfx::Display primary_display = Shell::GetScreen()->GetPrimaryDisplay();
 836   gfx::Display secondary_display = ScreenUtil::GetSecondaryDisplay();
 837
 838   DisplayLayout display_layout(DisplayLayout::RIGHT, 50);
 839   display_manager->SetLayoutForCurrentDisplays(display_layout);
 840
 841   EXPECT_NE(primary_display.id(), secondary_display.id());
 842   aura::Window* primary_root =
 843       display_controller->GetRootWindowForDisplayId(primary_display.id());
 844   aura::Window* secondary_root =
 845       display_controller->GetRootWindowForDisplayId(secondary_display.id());
 846   aura::Window* shelf_window =
 847       Shelf::ForPrimaryDisplay()->shelf_widget()->GetNativeView();
 848   EXPECT_TRUE(primary_root->Contains(shelf_window));
 849   EXPECT_FALSE(secondary_root->Contains(shelf_window));
 850   EXPECT_NE(primary_root, secondary_root);
 851   EXPECT_EQ(primary_display.id(),
 852             Shell::GetScreen()->GetDisplayNearestPoint(
 853                 gfx::Point(-100, -100)).id());
 854   EXPECT_EQ(primary_display.id(),
 855             Shell::GetScreen()->GetDisplayNearestWindow(NULL).id());
 856
 857   // Switch primary and secondary by display ID.
 858   TestObserver observer;
 859   display_controller->SetPrimaryDisplayId(secondary_display.id());
 860   EXPECT_EQ(secondary_display.id(),
 861             Shell::GetScreen()->GetPrimaryDisplay().id());
 862   EXPECT_EQ(primary_display.id(), ScreenUtil::GetSecondaryDisplay().id());
 863   EXPECT_LT(0, observer.CountAndReset());
 864
 865   EXPECT_EQ(
 866       primary_root,
 867       display_controller->GetRootWindowForDisplayId(secondary_display.id()));
 868   EXPECT_EQ(
 869       secondary_root,
 870       display_controller->GetRootWindowForDisplayId(primary_display.id()));
 871   EXPECT_TRUE(primary_root->Contains(shelf_window));
 872   EXPECT_FALSE(secondary_root->Contains(shelf_window));
 873
 874   const DisplayLayout& inverted_layout =
 875       display_manager->GetCurrentDisplayLayout();
 876
 877   EXPECT_EQ("left, -50", inverted_layout.ToString());
 878
 879   // Calling the same ID don't do anything.
 880   display_controller->SetPrimaryDisplayId(secondary_display.id());
 881   EXPECT_EQ(0, observer.CountAndReset());
 882
 883   aura::WindowTracker tracker;
 884   tracker.Add(primary_root);
 885   tracker.Add(secondary_root);
 886
 887   // Deleting 2nd display should move the primary to original primary display.
 888   UpdateDisplay("200x200");
 889   RunAllPendingInMessageLoop();  // RootWindow is deleted in a posted task.
 890   EXPECT_EQ(1, Shell::GetScreen()->GetNumDisplays());
 891   EXPECT_EQ(primary_display.id(), Shell::GetScreen()->GetPrimaryDisplay().id());
 892   EXPECT_EQ(primary_display.id(),
 893             Shell::GetScreen()->GetDisplayNearestPoint(
 894                 gfx::Point(-100, -100)).id());
 895   EXPECT_EQ(primary_display.id(),
 896             Shell::GetScreen()->GetDisplayNearestWindow(NULL).id());
 897   EXPECT_TRUE(tracker.Contains(primary_root));
 898   EXPECT_FALSE(tracker.Contains(secondary_root));
 899   EXPECT_TRUE(primary_root->Contains(shelf_window));
 900
 901   // Adding 2nd display with the same ID.  The 2nd display should become primary
 902   // since secondary id is still stored as desirable_primary_id.
 903   std::vector<DisplayInfo> display_info_list;
 904   display_info_list.push_back(
 905       display_manager->GetDisplayInfo(primary_display.id()));
 906   display_info_list.push_back(
 907       display_manager->GetDisplayInfo(secondary_display.id()));
 908   display_manager->OnNativeDisplaysChanged(display_info_list);
 909
 910   EXPECT_EQ(2, Shell::GetScreen()->GetNumDisplays());
 911   EXPECT_EQ(secondary_display.id(),
 912             Shell::GetScreen()->GetPrimaryDisplay().id());
 913   EXPECT_EQ(primary_display.id(), ScreenUtil::GetSecondaryDisplay().id());
 914   EXPECT_EQ(
 915       primary_root,
 916       display_controller->GetRootWindowForDisplayId(secondary_display.id()));
 917   EXPECT_NE(
 918       primary_root,
 919       display_controller->GetRootWindowForDisplayId(primary_display.id()));
 920   EXPECT_TRUE(primary_root->Contains(shelf_window));
 921
 922   // Deleting 2nd display and adding 2nd display with a different ID.  The 2nd
 923   // display shouldn't become primary.
 924   UpdateDisplay("200x200");
 925   DisplayInfo third_display_info(
 926       secondary_display.id() + 1, std::string(), false);
 927   third_display_info.SetBounds(secondary_display.bounds());
 928   ASSERT_NE(primary_display.id(), third_display_info.id());
 929
 930   const DisplayInfo& primary_display_info =
 931       display_manager->GetDisplayInfo(primary_display.id());
 932   std::vector<DisplayInfo> display_info_list2;
 933   display_info_list2.push_back(primary_display_info);
 934   display_info_list2.push_back(third_display_info);
 935   display_manager->OnNativeDisplaysChanged(display_info_list2);
 936   EXPECT_EQ(2, Shell::GetScreen()->GetNumDisplays());
 937   EXPECT_EQ(primary_display.id(),
 938             Shell::GetScreen()->GetPrimaryDisplay().id());
 939   EXPECT_EQ(third_display_info.id(), ScreenUtil::GetSecondaryDisplay().id());
 940   EXPECT_EQ(
 941       primary_root,
 942       display_controller->GetRootWindowForDisplayId(primary_display.id()));
 943   EXPECT_NE(
 944       primary_root,
 945       display_controller->GetRootWindowForDisplayId(third_display_info.id()));
 946   EXPECT_TRUE(primary_root->Contains(shelf_window));
 947 }
 948
 949 TEST_F(DisplayControllerTest, CursorDeviceScaleFactorSwapPrimary) {
 950   if (!SupportsMultipleDisplays())
 951     return;
 952
 953   DisplayController* display_controller =
 954       Shell::GetInstance()->display_controller();
 955
 956   UpdateDisplay("200x200,200x200*2");
 957   gfx::Display primary_display = Shell::GetScreen()->GetPrimaryDisplay();
 958   gfx::Display secondary_display = ScreenUtil::GetSecondaryDisplay();
 959
 960   aura::Window* primary_root =
 961       display_controller->GetRootWindowForDisplayId(primary_display.id());
 962   aura::Window* secondary_root =
 963       display_controller->GetRootWindowForDisplayId(secondary_display.id());
 964   EXPECT_NE(primary_root, secondary_root);
 965
 966   test::CursorManagerTestApi test_api(Shell::GetInstance()->cursor_manager());
 967
 968   EXPECT_EQ(1.0f, primary_root->GetHost()->compositor()->
 969       device_scale_factor());
 970   primary_root->MoveCursorTo(gfx::Point(50, 50));
 971   EXPECT_EQ(1.0f, test_api.GetCurrentCursor().device_scale_factor());
 972   EXPECT_EQ(2.0f, secondary_root->GetHost()->compositor()->
 973       device_scale_factor());
 974   secondary_root->MoveCursorTo(gfx::Point(50, 50));
 975   EXPECT_EQ(2.0f, test_api.GetCurrentCursor().device_scale_factor());
 976
 977   // Switch primary and secondary
 978   display_controller->SetPrimaryDisplay(secondary_display);
 979
 980   // Cursor's device scale factor should be updated accroding to the swap of
 981   // primary and secondary.
 982   EXPECT_EQ(1.0f, secondary_root->GetHost()->compositor()->
 983       device_scale_factor());
 984   secondary_root->MoveCursorTo(gfx::Point(50, 50));
 985   EXPECT_EQ(1.0f, test_api.GetCurrentCursor().device_scale_factor());
 986   primary_root->MoveCursorTo(gfx::Point(50, 50));
 987   EXPECT_EQ(2.0f, primary_root->GetHost()->compositor()->
 988       device_scale_factor());
 989   EXPECT_EQ(2.0f, test_api.GetCurrentCursor().device_scale_factor());
 990
 991   // Deleting 2nd display.
 992   UpdateDisplay("200x200");
 993   RunAllPendingInMessageLoop();  // RootWindow is deleted in a posted task.
 994
 995   // Cursor's device scale factor should be updated even without moving cursor.
 996   EXPECT_EQ(1.0f, test_api.GetCurrentCursor().device_scale_factor());
 997
 998   primary_root->MoveCursorTo(gfx::Point(50, 50));
 999   EXPECT_EQ(1.0f, primary_root->GetHost()->compositor()->
1000       device_scale_factor());
1001   EXPECT_EQ(1.0f, test_api.GetCurrentCursor().device_scale_factor());
1002 }
1003
1004 TEST_F(DisplayControllerTest, OverscanInsets) {
1005   if (!SupportsMultipleDisplays())
1006     return;
1007
1008   DisplayController* display_controller =
1009       Shell::GetInstance()->display_controller();
1010   TestEventHandler event_handler;
1011   Shell::GetInstance()->AddPreTargetHandler(&event_handler);
1012
1013   UpdateDisplay("120x200,300x400*2");
1014   gfx::Display display1 = Shell::GetScreen()->GetPrimaryDisplay();
1015   aura::Window::Windows root_windows = Shell::GetAllRootWindows();
1016
1017   display_controller->SetOverscanInsets(display1.id(),
1018                                         gfx::Insets(10, 15, 20, 25));
1019   EXPECT_EQ("0,0 80x170", root_windows[0]->bounds().ToString());
1020   EXPECT_EQ("150x200", root_windows[1]->bounds().size().ToString());
1021   EXPECT_EQ("80,0 150x200",
1022             ScreenUtil::GetSecondaryDisplay().bounds().ToString());
1023
1024   aura::test::EventGenerator generator(root_windows[0]);
1025   generator.MoveMouseToInHost(20, 25);
1026   EXPECT_EQ("5,15", event_handler.GetLocationAndReset());
1027
1028   display_controller->SetOverscanInsets(display1.id(), gfx::Insets());
1029   EXPECT_EQ("0,0 120x200", root_windows[0]->bounds().ToString());
1030   EXPECT_EQ("120,0 150x200",
1031             ScreenUtil::GetSecondaryDisplay().bounds().ToString());
1032
1033   generator.MoveMouseToInHost(30, 20);
1034   EXPECT_EQ("30,20", event_handler.GetLocationAndReset());
1035
1036   // Make sure the root window transformer uses correct scale
1037   // factor when swapping display. Test crbug.com/253690.
1038   UpdateDisplay("400x300*2,600x400/o");
1039   root_windows = Shell::GetAllRootWindows();
1040   gfx::Point point;
1041   Shell::GetAllRootWindows()[1]->GetHost()->
1042       GetRootTransform().TransformPoint(&point);
1043   EXPECT_EQ("15,10", point.ToString());
1044
1045   display_controller->SwapPrimaryDisplay();
1046   point.SetPoint(0, 0);
1047   Shell::GetAllRootWindows()[1]->GetHost()->
1048       GetRootTransform().TransformPoint(&point);
1049   EXPECT_EQ("15,10", point.ToString());
1050
1051   Shell::GetInstance()->RemovePreTargetHandler(&event_handler);
1052 }
1053
1054 TEST_F(DisplayControllerTest, Rotate) {
1055   if (!SupportsMultipleDisplays())
1056     return;
1057
1058   DisplayManager* display_manager = Shell::GetInstance()->display_manager();
1059   TestEventHandler event_handler;
1060   Shell::GetInstance()->AddPreTargetHandler(&event_handler);
1061
1062   UpdateDisplay("120x200,300x400*2");
1063   gfx::Display display1 = Shell::GetScreen()->GetPrimaryDisplay();
1064   int64 display2_id = ScreenUtil::GetSecondaryDisplay().id();
1065   aura::Window::Windows root_windows = Shell::GetAllRootWindows();
1066   aura::test::EventGenerator generator1(root_windows[0]);
1067
1068   TestObserver observer;
1069   EXPECT_EQ("120x200", root_windows[0]->bounds().size().ToString());
1070   EXPECT_EQ("150x200", root_windows[1]->bounds().size().ToString());
1071   EXPECT_EQ("120,0 150x200",
1072             ScreenUtil::GetSecondaryDisplay().bounds().ToString());
1073   generator1.MoveMouseToInHost(50, 40);
1074   EXPECT_EQ("50,40", event_handler.GetLocationAndReset());
1075   EXPECT_EQ(gfx::Display::ROTATE_0, GetStoredRotation(display1.id()));
1076   EXPECT_EQ(gfx::Display::ROTATE_0, GetStoredRotation(display2_id));
1077   EXPECT_EQ(0, observer.GetRotationChangedCountAndReset());
1078
1079   display_manager->SetDisplayRotation(display1.id(),
1080                                       gfx::Display::ROTATE_90);
1081   EXPECT_EQ("200x120", root_windows[0]->bounds().size().ToString());
1082   EXPECT_EQ("150x200", root_windows[1]->bounds().size().ToString());
1083   EXPECT_EQ("200,0 150x200",
1084             ScreenUtil::GetSecondaryDisplay().bounds().ToString());
1085   generator1.MoveMouseToInHost(50, 40);
1086   EXPECT_EQ("40,69", event_handler.GetLocationAndReset());
1087   EXPECT_EQ(gfx::Display::ROTATE_90, GetStoredRotation(display1.id()));
1088   EXPECT_EQ(gfx::Display::ROTATE_0, GetStoredRotation(display2_id));
1089   EXPECT_EQ(1, observer.GetRotationChangedCountAndReset());
1090
1091   DisplayLayout display_layout(DisplayLayout::BOTTOM, 50);
1092   display_manager->SetLayoutForCurrentDisplays(display_layout);
1093   EXPECT_EQ("50,120 150x200",
1094             ScreenUtil::GetSecondaryDisplay().bounds().ToString());
1095
1096   display_manager->SetDisplayRotation(display2_id,
1097                                       gfx::Display::ROTATE_270);
1098   EXPECT_EQ("200x120", root_windows[0]->bounds().size().ToString());
1099   EXPECT_EQ("200x150", root_windows[1]->bounds().size().ToString());
1100   EXPECT_EQ("50,120 200x150",
1101             ScreenUtil::GetSecondaryDisplay().bounds().ToString());
1102   EXPECT_EQ(gfx::Display::ROTATE_90, GetStoredRotation(display1.id()));
1103   EXPECT_EQ(gfx::Display::ROTATE_270, GetStoredRotation(display2_id));
1104   EXPECT_EQ(1, observer.GetRotationChangedCountAndReset());
1105
1106 #if !defined(OS_WIN)
1107   aura::test::EventGenerator generator2(root_windows[1]);
1108   generator2.MoveMouseToInHost(50, 40);
1109   EXPECT_EQ("179,25", event_handler.GetLocationAndReset());
1110   display_manager->SetDisplayRotation(display1.id(),
1111                                       gfx::Display::ROTATE_180);
1112
1113   EXPECT_EQ("120x200", root_windows[0]->bounds().size().ToString());
1114   EXPECT_EQ("200x150", root_windows[1]->bounds().size().ToString());
1115   // Dislay must share at least 100, so the x's offset becomes 20.
1116   EXPECT_EQ("20,200 200x150",
1117             ScreenUtil::GetSecondaryDisplay().bounds().ToString());
1118   EXPECT_EQ(gfx::Display::ROTATE_180, GetStoredRotation(display1.id()));
1119   EXPECT_EQ(gfx::Display::ROTATE_270, GetStoredRotation(display2_id));
1120   EXPECT_EQ(1, observer.GetRotationChangedCountAndReset());
1121
1122   generator1.MoveMouseToInHost(50, 40);
1123   EXPECT_EQ("69,159", event_handler.GetLocationAndReset());
1124 #endif
1125
1126   Shell::GetInstance()->RemovePreTargetHandler(&event_handler);
1127 }
1128
1129 TEST_F(DisplayControllerTest, ScaleRootWindow) {
1130   if (!SupportsMultipleDisplays())
1131     return;
1132
1133   TestEventHandler event_handler;
1134   Shell::GetInstance()->AddPreTargetHandler(&event_handler);
1135
1136   UpdateDisplay("600x400*2@1.5,500x300");
1137
1138   gfx::Display display1 = Shell::GetScreen()->GetPrimaryDisplay();
1139   gfx::Display::SetInternalDisplayId(display1.id());
1140
1141   gfx::Display display2 = ScreenUtil::GetSecondaryDisplay();
1142   aura::Window::Windows root_windows = Shell::GetAllRootWindows();
1143   EXPECT_EQ("0,0 450x300", display1.bounds().ToString());
1144   EXPECT_EQ("0,0 450x300", root_windows[0]->bounds().ToString());
1145   EXPECT_EQ("450,0 500x300", display2.bounds().ToString());
1146   EXPECT_EQ(1.5f, GetStoredUIScale(display1.id()));
1147   EXPECT_EQ(1.0f, GetStoredUIScale(display2.id()));
1148
1149   aura::test::EventGenerator generator(root_windows[0]);
1150   generator.MoveMouseToInHost(599, 200);
1151   EXPECT_EQ("449,150", event_handler.GetLocationAndReset());
1152
1153   DisplayManager* display_manager = Shell::GetInstance()->display_manager();
1154   display_manager->SetDisplayUIScale(display1.id(), 1.25f);
1155   display1 = Shell::GetScreen()->GetPrimaryDisplay();
1156   display2 = ScreenUtil::GetSecondaryDisplay();
1157   EXPECT_EQ("0,0 375x250", display1.bounds().ToString());
1158   EXPECT_EQ("0,0 375x250", root_windows[0]->bounds().ToString());
1159   EXPECT_EQ("375,0 500x300", display2.bounds().ToString());
1160   EXPECT_EQ(1.25f, GetStoredUIScale(display1.id()));
1161   EXPECT_EQ(1.0f, GetStoredUIScale(display2.id()));
1162
1163   Shell::GetInstance()->RemovePreTargetHandler(&event_handler);
1164 }
1165
1166 TEST_F(DisplayControllerTest, TouchScale) {
1167   if (!SupportsMultipleDisplays())
1168     return;
1169
1170   TestEventHandler event_handler;
1171   Shell::GetInstance()->AddPreTargetHandler(&event_handler);
1172
1173   UpdateDisplay("200x200*2");
1174   gfx::Display display = Shell::GetScreen()->GetPrimaryDisplay();
1175   aura::Window::Windows root_windows = Shell::GetAllRootWindows();
1176   aura::Window* root_window = root_windows[0];
1177   aura::test::EventGenerator generator(root_window);
1178
1179   generator.PressMoveAndReleaseTouchTo(50, 50);
1180   // Default test touches have radius_x/y = 1.0, with device scale
1181   // factor = 2, the scaled radius_x/y should be 0.5.
1182   EXPECT_EQ(0.5, event_handler.touch_radius_x());
1183   EXPECT_EQ(0.5, event_handler.touch_radius_y());
1184
1185   generator.ScrollSequence(gfx::Point(0,0),
1186                            base::TimeDelta::FromMilliseconds(100),
1187                            10.0, 1.0, 5, 1);
1188
1189   // ordinal_offset is invariant to the device scale factor.
1190   EXPECT_EQ(event_handler.scroll_x_offset(),
1191             event_handler.scroll_x_offset_ordinal());
1192   EXPECT_EQ(event_handler.scroll_y_offset(),
1193             event_handler.scroll_y_offset_ordinal());
1194
1195   Shell::GetInstance()->RemovePreTargetHandler(&event_handler);
1196 }
1197
1198 TEST_F(DisplayControllerTest, ConvertHostToRootCoords) {
1199   if (!SupportsMultipleDisplays())
1200     return;
1201
1202   TestEventHandler event_handler;
1203   Shell::GetInstance()->AddPreTargetHandler(&event_handler);
1204
1205   UpdateDisplay("600x400*2/r@1.5");
1206
1207   gfx::Display display1 = Shell::GetScreen()->GetPrimaryDisplay();
1208   aura::Window::Windows root_windows = Shell::GetAllRootWindows();
1209   EXPECT_EQ("0,0 300x450", display1.bounds().ToString());
1210   EXPECT_EQ("0,0 300x450", root_windows[0]->bounds().ToString());
1211   EXPECT_EQ(1.5f, GetStoredUIScale(display1.id()));
1212
1213   aura::test::EventGenerator generator(root_windows[0]);
1214   generator.MoveMouseToInHost(0, 0);
1215   EXPECT_EQ("0,449", event_handler.GetLocationAndReset());
1216   generator.MoveMouseToInHost(599, 0);
1217   EXPECT_EQ("0,0", event_handler.GetLocationAndReset());
1218   generator.MoveMouseToInHost(599, 399);
1219   EXPECT_EQ("299,0", event_handler.GetLocationAndReset());
1220   generator.MoveMouseToInHost(0, 399);
1221   EXPECT_EQ("299,449", event_handler.GetLocationAndReset());
1222
1223   UpdateDisplay("600x400*2/u@1.5");
1224   display1 = Shell::GetScreen()->GetPrimaryDisplay();
1225   root_windows = Shell::GetAllRootWindows();
1226   EXPECT_EQ("0,0 450x300", display1.bounds().ToString());
1227   EXPECT_EQ("0,0 450x300", root_windows[0]->bounds().ToString());
1228   EXPECT_EQ(1.5f, GetStoredUIScale(display1.id()));
1229
1230   generator.MoveMouseToInHost(0, 0);
1231   EXPECT_EQ("449,299", event_handler.GetLocationAndReset());
1232   generator.MoveMouseToInHost(599, 0);
1233   EXPECT_EQ("0,299", event_handler.GetLocationAndReset());
1234   generator.MoveMouseToInHost(599, 399);
1235   EXPECT_EQ("0,0", event_handler.GetLocationAndReset());
1236   generator.MoveMouseToInHost(0, 399);
1237   EXPECT_EQ("449,0", event_handler.GetLocationAndReset());
1238
1239   UpdateDisplay("600x400*2/l@1.5");
1240   display1 = Shell::GetScreen()->GetPrimaryDisplay();
1241   root_windows = Shell::GetAllRootWindows();
1242   EXPECT_EQ("0,0 300x450", display1.bounds().ToString());
1243   EXPECT_EQ("0,0 300x450", root_windows[0]->bounds().ToString());
1244   EXPECT_EQ(1.5f, GetStoredUIScale(display1.id()));
1245
1246   generator.MoveMouseToInHost(0, 0);
1247   EXPECT_EQ("299,0", event_handler.GetLocationAndReset());
1248   generator.MoveMouseToInHost(599, 0);
1249   EXPECT_EQ("299,449", event_handler.GetLocationAndReset());
1250   generator.MoveMouseToInHost(599, 399);
1251   EXPECT_EQ("0,449", event_handler.GetLocationAndReset());
1252   generator.MoveMouseToInHost(0, 399);
1253   EXPECT_EQ("0,0", event_handler.GetLocationAndReset());
1254
1255   Shell::GetInstance()->RemovePreTargetHandler(&event_handler);
1256 }
1257
1258 namespace {
1259
1260 DisplayInfo CreateDisplayInfo(int64 id,
1261                               int y,
1262                               gfx::Display::Rotation rotation) {
1263   DisplayInfo info(id, "", false);
1264   info.SetBounds(gfx::Rect(0, y, 500, 500));
1265   info.set_rotation(rotation);
1266   return info;
1267 }
1268
1269 }  // namespace
1270
1271 // Make sure that the compositor based mirroring can switch
1272 // from/to dock mode.
1273 TEST_F(DisplayControllerTest, DockToSingle) {
1274   if (!SupportsMultipleDisplays())
1275     return;
1276
1277   DisplayManager* display_manager = Shell::GetInstance()->display_manager();
1278
1279   const int64 internal_id = 1;
1280
1281   const DisplayInfo internal_display_info =
1282       CreateDisplayInfo(internal_id, 0, gfx::Display::ROTATE_0);
1283   const DisplayInfo external_display_info =
1284       CreateDisplayInfo(2, 1, gfx::Display::ROTATE_90);
1285
1286   std::vector<DisplayInfo> display_info_list;
1287   // Extended
1288   display_info_list.push_back(internal_display_info);
1289   display_info_list.push_back(external_display_info);
1290   display_manager->OnNativeDisplaysChanged(display_info_list);
1291   const int64 internal_display_id =
1292       test::DisplayManagerTestApi(display_manager).
1293       SetFirstDisplayAsInternalDisplay();
1294   EXPECT_EQ(internal_id, internal_display_id);
1295   EXPECT_EQ(2U, display_manager->GetNumDisplays());
1296
1297   // Dock mode.
1298   display_info_list.clear();
1299   display_info_list.push_back(external_display_info);
1300   display_manager->OnNativeDisplaysChanged(display_info_list);
1301   EXPECT_EQ(1U, display_manager->GetNumDisplays());
1302   EXPECT_FALSE(Shell::GetPrimaryRootWindow()->GetHost()->
1303                GetRootTransform().IsIdentityOrIntegerTranslation());
1304
1305   // Switch to single mode and make sure the transform is the one
1306   // for the internal display.
1307   display_info_list.clear();
1308   display_info_list.push_back(internal_display_info);
1309   display_manager->OnNativeDisplaysChanged(display_info_list);
1310   EXPECT_TRUE(Shell::GetPrimaryRootWindow()->GetHost()->
1311               GetRootTransform().IsIdentityOrIntegerTranslation());
1312 }
1313
1314 #if defined(USE_X11)
1315 TEST_F(DisplayControllerTest, XWidowNameForRootWindow) {
1316   EXPECT_EQ("aura_root_0", GetXWindowName(
1317       Shell::GetPrimaryRootWindow()->GetHost()));
1318
1319   // Multiple display.
1320   UpdateDisplay("200x200,300x300");
1321   aura::Window* primary, *secondary;
1322   GetPrimaryAndSeconary(&primary, &secondary);
1323   EXPECT_EQ("aura_root_0", GetXWindowName(primary->GetHost()));
1324   EXPECT_EQ("aura_root_x", GetXWindowName(secondary->GetHost()));
1325
1326   // Swap primary.
1327   primary = secondary = NULL;
1328   Shell::GetInstance()->display_controller()->SwapPrimaryDisplay();
1329   GetPrimaryAndSeconary(&primary, &secondary);
1330   EXPECT_EQ("aura_root_0", GetXWindowName(primary->GetHost()));
1331   EXPECT_EQ("aura_root_x", GetXWindowName(secondary->GetHost()));
1332
1333   // Switching back to single display.
1334   UpdateDisplay("300x400");
1335   EXPECT_EQ("aura_root_0", GetXWindowName(
1336       Shell::GetPrimaryRootWindow()->GetHost()));
1337 }
1338 #endif
1339
1340 }  // namespace ash