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         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   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   EXPECT_EQ(0, observer.GetChangedDisplayIdAndReset());
 593   EXPECT_EQ(0, observer.GetBoundsChangedCountAndReset());
 594   EXPECT_EQ(0, observer.GetWorkareaChangedCountAndReset());
 595   EXPECT_EQ(1, observer.CountAndReset());
 596   EXPECT_EQ(0, observer.GetFocusChangedCountAndReset());
 597   EXPECT_EQ(0, observer.GetActivationChangedCountAndReset());
 598
 599   EXPECT_TRUE(window_state->IsFullscreen());
 600   EXPECT_EQ("0,0 500x500", w1->bounds().ToString());
 601 }
 602
 603 TEST_F(DisplayControllerTest, BoundsUpdated) {
 604   if (!SupportsMultipleDisplays())
 605     return;
 606
 607   // Creates windows to catch activation change event.
 608   scoped_ptr<aura::Window> w1(CreateTestWindowInShellWithId(1));
 609   w1->Focus();
 610
 611   TestObserver observer;
 612   SetDefaultDisplayLayout(DisplayLayout::BOTTOM);
 613   UpdateDisplay("200x200,300x300");  // layout, resize and add.
 614   EXPECT_EQ(1, observer.CountAndReset());
 615   EXPECT_EQ(0, observer.GetFocusChangedCountAndReset());
 616   EXPECT_EQ(0, observer.GetActivationChangedCountAndReset());
 617
 618   DisplayManager* display_manager = Shell::GetInstance()->display_manager();
 619   gfx::Insets insets(5, 5, 5, 5);
 620   display_manager->UpdateWorkAreaOfDisplay(
 621       ScreenUtil::GetSecondaryDisplay().id(), insets);
 622
 623   EXPECT_EQ("0,0 200x200", GetPrimaryDisplay().bounds().ToString());
 624   EXPECT_EQ("0,200 300x300", GetSecondaryDisplay().bounds().ToString());
 625   EXPECT_EQ("5,205 290x290", GetSecondaryDisplay().work_area().ToString());
 626
 627   UpdateDisplay("400x400,200x200");
 628   EXPECT_EQ(1, observer.CountAndReset());  // two resizes
 629   EXPECT_EQ(0, observer.GetFocusChangedCountAndReset());
 630   EXPECT_EQ(0, observer.GetActivationChangedCountAndReset());
 631   EXPECT_EQ("0,0 400x400", GetPrimaryDisplay().bounds().ToString());
 632   EXPECT_EQ("0,400 200x200", GetSecondaryDisplay().bounds().ToString());
 633
 634   UpdateDisplay("400x400,300x300");
 635   EXPECT_EQ(1, observer.CountAndReset());
 636   EXPECT_EQ(0, observer.GetFocusChangedCountAndReset());
 637   EXPECT_EQ(0, observer.GetActivationChangedCountAndReset());
 638   EXPECT_EQ("0,0 400x400", GetPrimaryDisplay().bounds().ToString());
 639   EXPECT_EQ("0,400 300x300", GetSecondaryDisplay().bounds().ToString());
 640
 641   UpdateDisplay("400x400");
 642   EXPECT_EQ(1, observer.CountAndReset());
 643   EXPECT_LE(1, observer.GetFocusChangedCountAndReset());
 644   EXPECT_LE(1, observer.GetActivationChangedCountAndReset());
 645   EXPECT_EQ("0,0 400x400", GetPrimaryDisplay().bounds().ToString());
 646   EXPECT_EQ(1, Shell::GetScreen()->GetNumDisplays());
 647
 648   UpdateDisplay("400x500*2,300x300");
 649   EXPECT_EQ(1, observer.CountAndReset());
 650   EXPECT_EQ(0, observer.GetFocusChangedCountAndReset());
 651   EXPECT_EQ(0, observer.GetActivationChangedCountAndReset());
 652   ASSERT_EQ(2, Shell::GetScreen()->GetNumDisplays());
 653   EXPECT_EQ("0,0 200x250", GetPrimaryDisplay().bounds().ToString());
 654   EXPECT_EQ("0,250 300x300", GetSecondaryDisplay().bounds().ToString());
 655
 656   // No change
 657   UpdateDisplay("400x500*2,300x300");
 658   EXPECT_EQ(0, observer.CountAndReset());
 659   EXPECT_EQ(0, observer.GetFocusChangedCountAndReset());
 660   EXPECT_EQ(0, observer.GetActivationChangedCountAndReset());
 661
 662   // Rotation
 663   observer.GetRotationChangedCountAndReset();  // we only want to reset.
 664   int64 primary_id = GetPrimaryDisplay().id();
 665   display_manager->SetDisplayRotation(primary_id, gfx::Display::ROTATE_90);
 666   EXPECT_EQ(1, observer.GetRotationChangedCountAndReset());
 667   EXPECT_EQ(1, observer.CountAndReset());
 668   EXPECT_EQ(0, observer.GetFocusChangedCountAndReset());
 669   EXPECT_EQ(0, observer.GetActivationChangedCountAndReset());
 670   display_manager->SetDisplayRotation(primary_id, gfx::Display::ROTATE_90);
 671   EXPECT_EQ(0, observer.GetRotationChangedCountAndReset());
 672   EXPECT_EQ(0, observer.CountAndReset());
 673   EXPECT_EQ(0, observer.GetFocusChangedCountAndReset());
 674   EXPECT_EQ(0, observer.GetActivationChangedCountAndReset());
 675
 676   // UI scale is eanbled only on internal display.
 677   int64 secondary_id = GetSecondaryDisplay().id();
 678   gfx::Display::SetInternalDisplayId(secondary_id);
 679   display_manager->SetDisplayUIScale(secondary_id, 1.125f);
 680   EXPECT_EQ(1, observer.CountAndReset());
 681   EXPECT_EQ(0, observer.GetFocusChangedCountAndReset());
 682   EXPECT_EQ(0, observer.GetActivationChangedCountAndReset());
 683   display_manager->SetDisplayUIScale(secondary_id, 1.125f);
 684   EXPECT_EQ(0, observer.CountAndReset());
 685   EXPECT_EQ(0, observer.GetFocusChangedCountAndReset());
 686   EXPECT_EQ(0, observer.GetActivationChangedCountAndReset());
 687   display_manager->SetDisplayUIScale(primary_id, 1.125f);
 688   EXPECT_EQ(0, observer.CountAndReset());
 689   EXPECT_EQ(0, observer.GetFocusChangedCountAndReset());
 690   EXPECT_EQ(0, observer.GetActivationChangedCountAndReset());
 691   display_manager->SetDisplayUIScale(primary_id, 1.125f);
 692   EXPECT_EQ(0, observer.CountAndReset());
 693   EXPECT_EQ(0, observer.GetFocusChangedCountAndReset());
 694   EXPECT_EQ(0, observer.GetActivationChangedCountAndReset());
 695 }
 696
 697 TEST_F(DisplayControllerTest, SwapPrimary) {
 698   if (!SupportsMultipleDisplays())
 699     return;
 700
 701   DisplayController* display_controller =
 702       Shell::GetInstance()->display_controller();
 703   DisplayManager* display_manager = Shell::GetInstance()->display_manager();
 704
 705   UpdateDisplay("200x200,300x300");
 706   gfx::Display primary_display = Shell::GetScreen()->GetPrimaryDisplay();
 707   gfx::Display secondary_display = ScreenUtil::GetSecondaryDisplay();
 708
 709   DisplayLayout display_layout(DisplayLayout::RIGHT, 50);
 710   display_manager->SetLayoutForCurrentDisplays(display_layout);
 711
 712   EXPECT_NE(primary_display.id(), secondary_display.id());
 713   aura::Window* primary_root =
 714       display_controller->GetRootWindowForDisplayId(primary_display.id());
 715   aura::Window* secondary_root =
 716       display_controller->GetRootWindowForDisplayId(secondary_display.id());
 717   EXPECT_NE(primary_root, secondary_root);
 718   aura::Window* shelf_window =
 719       Shelf::ForPrimaryDisplay()->shelf_widget()->GetNativeView();
 720   EXPECT_TRUE(primary_root->Contains(shelf_window));
 721   EXPECT_FALSE(secondary_root->Contains(shelf_window));
 722   EXPECT_EQ(primary_display.id(),
 723             Shell::GetScreen()->GetDisplayNearestPoint(
 724                 gfx::Point(-100, -100)).id());
 725   EXPECT_EQ(primary_display.id(),
 726             Shell::GetScreen()->GetDisplayNearestWindow(NULL).id());
 727
 728   EXPECT_EQ("0,0 200x200", primary_display.bounds().ToString());
 729   EXPECT_EQ("0,0 200x153", primary_display.work_area().ToString());
 730   EXPECT_EQ("200,0 300x300", secondary_display.bounds().ToString());
 731   EXPECT_EQ("200,0 300x253", secondary_display.work_area().ToString());
 732   EXPECT_EQ("right, 50",
 733             display_manager->GetCurrentDisplayLayout().ToString());
 734
 735   // Switch primary and secondary
 736   display_controller->SetPrimaryDisplay(secondary_display);
 737   const DisplayLayout& inverted_layout =
 738       display_manager->GetCurrentDisplayLayout();
 739   EXPECT_EQ("left, -50", inverted_layout.ToString());
 740
 741   EXPECT_EQ(secondary_display.id(),
 742             Shell::GetScreen()->GetPrimaryDisplay().id());
 743   EXPECT_EQ(primary_display.id(), ScreenUtil::GetSecondaryDisplay().id());
 744   EXPECT_EQ(primary_display.id(),
 745             Shell::GetScreen()->GetDisplayNearestPoint(
 746                 gfx::Point(-100, -100)).id());
 747   EXPECT_EQ(secondary_display.id(),
 748             Shell::GetScreen()->GetDisplayNearestWindow(NULL).id());
 749
 750   EXPECT_EQ(
 751       primary_root,
 752       display_controller->GetRootWindowForDisplayId(secondary_display.id()));
 753   EXPECT_EQ(
 754       secondary_root,
 755       display_controller->GetRootWindowForDisplayId(primary_display.id()));
 756   EXPECT_TRUE(primary_root->Contains(shelf_window));
 757   EXPECT_FALSE(secondary_root->Contains(shelf_window));
 758
 759   // Test if the bounds are correctly swapped.
 760   gfx::Display swapped_primary = Shell::GetScreen()->GetPrimaryDisplay();
 761   gfx::Display swapped_secondary = ScreenUtil::GetSecondaryDisplay();
 762   EXPECT_EQ("0,0 300x300", swapped_primary.bounds().ToString());
 763   EXPECT_EQ("0,0 300x253", swapped_primary.work_area().ToString());
 764   EXPECT_EQ("-200,-50 200x200", swapped_secondary.bounds().ToString());
 765
 766   EXPECT_EQ("-200,-50 200x153", swapped_secondary.work_area().ToString());
 767
 768   aura::WindowTracker tracker;
 769   tracker.Add(primary_root);
 770   tracker.Add(secondary_root);
 771
 772   // Deleting 2nd display should move the primary to original primary display.
 773   UpdateDisplay("200x200");
 774   RunAllPendingInMessageLoop();  // RootWindow is deleted in a posted task.
 775   EXPECT_EQ(1, Shell::GetScreen()->GetNumDisplays());
 776   EXPECT_EQ(primary_display.id(), Shell::GetScreen()->GetPrimaryDisplay().id());
 777   EXPECT_EQ(primary_display.id(),
 778             Shell::GetScreen()->GetDisplayNearestPoint(
 779                 gfx::Point(-100, -100)).id());
 780   EXPECT_EQ(primary_display.id(),
 781             Shell::GetScreen()->GetDisplayNearestWindow(NULL).id());
 782   EXPECT_TRUE(tracker.Contains(primary_root));
 783   EXPECT_FALSE(tracker.Contains(secondary_root));
 784   EXPECT_TRUE(primary_root->Contains(shelf_window));
 785 }
 786
 787 TEST_F(DisplayControllerTest, FindNearestDisplay) {
 788   if (!SupportsMultipleDisplays())
 789     return;
 790
 791   DisplayController* display_controller =
 792       Shell::GetInstance()->display_controller();
 793   DisplayManager* display_manager = Shell::GetInstance()->display_manager();
 794
 795   UpdateDisplay("200x200,300x300");
 796   DisplayLayout display_layout(DisplayLayout::RIGHT, 50);
 797   display_manager->SetLayoutForCurrentDisplays(display_layout);
 798
 799   gfx::Display primary_display = Shell::GetScreen()->GetPrimaryDisplay();
 800   gfx::Display secondary_display = ScreenUtil::GetSecondaryDisplay();
 801   EXPECT_NE(primary_display.id(), secondary_display.id());
 802   aura::Window* primary_root =
 803       display_controller->GetRootWindowForDisplayId(primary_display.id());
 804   aura::Window* secondary_root =
 805       display_controller->GetRootWindowForDisplayId(secondary_display.id());
 806   EXPECT_NE(primary_root, secondary_root);
 807
 808   // Test that points outside of any display return the nearest display.
 809   EXPECT_EQ(primary_display.id(), Shell::GetScreen()->GetDisplayNearestPoint(
 810       gfx::Point(-100, 0)).id());
 811   EXPECT_EQ(primary_display.id(), Shell::GetScreen()->GetDisplayNearestPoint(
 812       gfx::Point(0, -100)).id());
 813   EXPECT_EQ(primary_display.id(), Shell::GetScreen()->GetDisplayNearestPoint(
 814       gfx::Point(100, 100)).id());
 815   EXPECT_EQ(primary_display.id(), Shell::GetScreen()->GetDisplayNearestPoint(
 816       gfx::Point(224, 25)).id());
 817   EXPECT_EQ(secondary_display.id(), Shell::GetScreen()->GetDisplayNearestPoint(
 818       gfx::Point(226, 25)).id());
 819   EXPECT_EQ(secondary_display.id(), Shell::GetScreen()->GetDisplayNearestPoint(
 820       gfx::Point(600, 100)).id());
 821   EXPECT_EQ(primary_display.id(), Shell::GetScreen()->GetDisplayNearestPoint(
 822       gfx::Point(174, 225)).id());
 823   EXPECT_EQ(secondary_display.id(), Shell::GetScreen()->GetDisplayNearestPoint(
 824       gfx::Point(176, 225)).id());
 825   EXPECT_EQ(secondary_display.id(), Shell::GetScreen()->GetDisplayNearestPoint(
 826       gfx::Point(300, 400)).id());
 827 }
 828
 829 TEST_F(DisplayControllerTest, SwapPrimaryById) {
 830   if (!SupportsMultipleDisplays())
 831     return;
 832
 833   DisplayController* display_controller =
 834       Shell::GetInstance()->display_controller();
 835   DisplayManager* display_manager = Shell::GetInstance()->display_manager();
 836
 837   UpdateDisplay("200x200,300x300");
 838   gfx::Display primary_display = Shell::GetScreen()->GetPrimaryDisplay();
 839   gfx::Display secondary_display = ScreenUtil::GetSecondaryDisplay();
 840
 841   DisplayLayout display_layout(DisplayLayout::RIGHT, 50);
 842   display_manager->SetLayoutForCurrentDisplays(display_layout);
 843
 844   EXPECT_NE(primary_display.id(), secondary_display.id());
 845   aura::Window* primary_root =
 846       display_controller->GetRootWindowForDisplayId(primary_display.id());
 847   aura::Window* secondary_root =
 848       display_controller->GetRootWindowForDisplayId(secondary_display.id());
 849   aura::Window* shelf_window =
 850       Shelf::ForPrimaryDisplay()->shelf_widget()->GetNativeView();
 851   EXPECT_TRUE(primary_root->Contains(shelf_window));
 852   EXPECT_FALSE(secondary_root->Contains(shelf_window));
 853   EXPECT_NE(primary_root, secondary_root);
 854   EXPECT_EQ(primary_display.id(),
 855             Shell::GetScreen()->GetDisplayNearestPoint(
 856                 gfx::Point(-100, -100)).id());
 857   EXPECT_EQ(primary_display.id(),
 858             Shell::GetScreen()->GetDisplayNearestWindow(NULL).id());
 859
 860   // Switch primary and secondary by display ID.
 861   TestObserver observer;
 862   display_controller->SetPrimaryDisplayId(secondary_display.id());
 863   EXPECT_EQ(secondary_display.id(),
 864             Shell::GetScreen()->GetPrimaryDisplay().id());
 865   EXPECT_EQ(primary_display.id(), ScreenUtil::GetSecondaryDisplay().id());
 866   EXPECT_LT(0, observer.CountAndReset());
 867
 868   EXPECT_EQ(
 869       primary_root,
 870       display_controller->GetRootWindowForDisplayId(secondary_display.id()));
 871   EXPECT_EQ(
 872       secondary_root,
 873       display_controller->GetRootWindowForDisplayId(primary_display.id()));
 874   EXPECT_TRUE(primary_root->Contains(shelf_window));
 875   EXPECT_FALSE(secondary_root->Contains(shelf_window));
 876
 877   const DisplayLayout& inverted_layout =
 878       display_manager->GetCurrentDisplayLayout();
 879
 880   EXPECT_EQ("left, -50", inverted_layout.ToString());
 881
 882   // Calling the same ID don't do anything.
 883   display_controller->SetPrimaryDisplayId(secondary_display.id());
 884   EXPECT_EQ(0, observer.CountAndReset());
 885
 886   aura::WindowTracker tracker;
 887   tracker.Add(primary_root);
 888   tracker.Add(secondary_root);
 889
 890   // Deleting 2nd display should move the primary to original primary display.
 891   UpdateDisplay("200x200");
 892   RunAllPendingInMessageLoop();  // RootWindow is deleted in a posted task.
 893   EXPECT_EQ(1, Shell::GetScreen()->GetNumDisplays());
 894   EXPECT_EQ(primary_display.id(), Shell::GetScreen()->GetPrimaryDisplay().id());
 895   EXPECT_EQ(primary_display.id(),
 896             Shell::GetScreen()->GetDisplayNearestPoint(
 897                 gfx::Point(-100, -100)).id());
 898   EXPECT_EQ(primary_display.id(),
 899             Shell::GetScreen()->GetDisplayNearestWindow(NULL).id());
 900   EXPECT_TRUE(tracker.Contains(primary_root));
 901   EXPECT_FALSE(tracker.Contains(secondary_root));
 902   EXPECT_TRUE(primary_root->Contains(shelf_window));
 903
 904   // Adding 2nd display with the same ID.  The 2nd display should become primary
 905   // since secondary id is still stored as desirable_primary_id.
 906   std::vector<DisplayInfo> display_info_list;
 907   display_info_list.push_back(
 908       display_manager->GetDisplayInfo(primary_display.id()));
 909   display_info_list.push_back(
 910       display_manager->GetDisplayInfo(secondary_display.id()));
 911   display_manager->OnNativeDisplaysChanged(display_info_list);
 912
 913   EXPECT_EQ(2, Shell::GetScreen()->GetNumDisplays());
 914   EXPECT_EQ(secondary_display.id(),
 915             Shell::GetScreen()->GetPrimaryDisplay().id());
 916   EXPECT_EQ(primary_display.id(), ScreenUtil::GetSecondaryDisplay().id());
 917   EXPECT_EQ(
 918       primary_root,
 919       display_controller->GetRootWindowForDisplayId(secondary_display.id()));
 920   EXPECT_NE(
 921       primary_root,
 922       display_controller->GetRootWindowForDisplayId(primary_display.id()));
 923   EXPECT_TRUE(primary_root->Contains(shelf_window));
 924
 925   // Deleting 2nd display and adding 2nd display with a different ID.  The 2nd
 926   // display shouldn't become primary.
 927   UpdateDisplay("200x200");
 928   DisplayInfo third_display_info(
 929       secondary_display.id() + 1, std::string(), false);
 930   third_display_info.SetBounds(secondary_display.bounds());
 931   ASSERT_NE(primary_display.id(), third_display_info.id());
 932
 933   const DisplayInfo& primary_display_info =
 934       display_manager->GetDisplayInfo(primary_display.id());
 935   std::vector<DisplayInfo> display_info_list2;
 936   display_info_list2.push_back(primary_display_info);
 937   display_info_list2.push_back(third_display_info);
 938   display_manager->OnNativeDisplaysChanged(display_info_list2);
 939   EXPECT_EQ(2, Shell::GetScreen()->GetNumDisplays());
 940   EXPECT_EQ(primary_display.id(),
 941             Shell::GetScreen()->GetPrimaryDisplay().id());
 942   EXPECT_EQ(third_display_info.id(), ScreenUtil::GetSecondaryDisplay().id());
 943   EXPECT_EQ(
 944       primary_root,
 945       display_controller->GetRootWindowForDisplayId(primary_display.id()));
 946   EXPECT_NE(
 947       primary_root,
 948       display_controller->GetRootWindowForDisplayId(third_display_info.id()));
 949   EXPECT_TRUE(primary_root->Contains(shelf_window));
 950 }
 951
 952 TEST_F(DisplayControllerTest, CursorDeviceScaleFactorSwapPrimary) {
 953   if (!SupportsMultipleDisplays())
 954     return;
 955
 956   DisplayController* display_controller =
 957       Shell::GetInstance()->display_controller();
 958
 959   UpdateDisplay("200x200,200x200*2");
 960   gfx::Display primary_display = Shell::GetScreen()->GetPrimaryDisplay();
 961   gfx::Display secondary_display = ScreenUtil::GetSecondaryDisplay();
 962
 963   aura::Window* primary_root =
 964       display_controller->GetRootWindowForDisplayId(primary_display.id());
 965   aura::Window* secondary_root =
 966       display_controller->GetRootWindowForDisplayId(secondary_display.id());
 967   EXPECT_NE(primary_root, secondary_root);
 968
 969   test::CursorManagerTestApi test_api(Shell::GetInstance()->cursor_manager());
 970
 971   EXPECT_EQ(1.0f, primary_root->GetHost()->compositor()->
 972       device_scale_factor());
 973   primary_root->MoveCursorTo(gfx::Point(50, 50));
 974   EXPECT_EQ(1.0f, test_api.GetCurrentCursor().device_scale_factor());
 975   EXPECT_EQ(2.0f, secondary_root->GetHost()->compositor()->
 976       device_scale_factor());
 977   secondary_root->MoveCursorTo(gfx::Point(50, 50));
 978   EXPECT_EQ(2.0f, test_api.GetCurrentCursor().device_scale_factor());
 979
 980   // Switch primary and secondary
 981   display_controller->SetPrimaryDisplay(secondary_display);
 982
 983   // Cursor's device scale factor should be updated accroding to the swap of
 984   // primary and secondary.
 985   EXPECT_EQ(1.0f, secondary_root->GetHost()->compositor()->
 986       device_scale_factor());
 987   secondary_root->MoveCursorTo(gfx::Point(50, 50));
 988   EXPECT_EQ(1.0f, test_api.GetCurrentCursor().device_scale_factor());
 989   primary_root->MoveCursorTo(gfx::Point(50, 50));
 990   EXPECT_EQ(2.0f, primary_root->GetHost()->compositor()->
 991       device_scale_factor());
 992   EXPECT_EQ(2.0f, test_api.GetCurrentCursor().device_scale_factor());
 993
 994   // Deleting 2nd display.
 995   UpdateDisplay("200x200");
 996   RunAllPendingInMessageLoop();  // RootWindow is deleted in a posted task.
 997
 998   // Cursor's device scale factor should be updated even without moving cursor.
 999   EXPECT_EQ(1.0f, test_api.GetCurrentCursor().device_scale_factor());
1000
1001   primary_root->MoveCursorTo(gfx::Point(50, 50));
1002   EXPECT_EQ(1.0f, primary_root->GetHost()->compositor()->
1003       device_scale_factor());
1004   EXPECT_EQ(1.0f, test_api.GetCurrentCursor().device_scale_factor());
1005 }
1006
1007 TEST_F(DisplayControllerTest, OverscanInsets) {
1008   if (!SupportsMultipleDisplays())
1009     return;
1010
1011   DisplayController* display_controller =
1012       Shell::GetInstance()->display_controller();
1013   TestEventHandler event_handler;
1014   Shell::GetInstance()->AddPreTargetHandler(&event_handler);
1015
1016   UpdateDisplay("120x200,300x400*2");
1017   gfx::Display display1 = Shell::GetScreen()->GetPrimaryDisplay();
1018   aura::Window::Windows root_windows = Shell::GetAllRootWindows();
1019
1020   display_controller->SetOverscanInsets(display1.id(),
1021                                         gfx::Insets(10, 15, 20, 25));
1022   EXPECT_EQ("0,0 80x170", root_windows[0]->bounds().ToString());
1023   EXPECT_EQ("150x200", root_windows[1]->bounds().size().ToString());
1024   EXPECT_EQ("80,0 150x200",
1025             ScreenUtil::GetSecondaryDisplay().bounds().ToString());
1026
1027   ui::test::EventGenerator generator(root_windows[0]);
1028   generator.MoveMouseToInHost(20, 25);
1029   EXPECT_EQ("5,15", event_handler.GetLocationAndReset());
1030
1031   display_controller->SetOverscanInsets(display1.id(), gfx::Insets());
1032   EXPECT_EQ("0,0 120x200", root_windows[0]->bounds().ToString());
1033   EXPECT_EQ("120,0 150x200",
1034             ScreenUtil::GetSecondaryDisplay().bounds().ToString());
1035
1036   generator.MoveMouseToInHost(30, 20);
1037   EXPECT_EQ("30,20", event_handler.GetLocationAndReset());
1038
1039   // Make sure the root window transformer uses correct scale
1040   // factor when swapping display. Test crbug.com/253690.
1041   UpdateDisplay("400x300*2,600x400/o");
1042   root_windows = Shell::GetAllRootWindows();
1043   gfx::Point point;
1044   Shell::GetAllRootWindows()[1]->GetHost()->
1045       GetRootTransform().TransformPoint(&point);
1046   EXPECT_EQ("15,10", point.ToString());
1047
1048   display_controller->SwapPrimaryDisplay();
1049   point.SetPoint(0, 0);
1050   Shell::GetAllRootWindows()[1]->GetHost()->
1051       GetRootTransform().TransformPoint(&point);
1052   EXPECT_EQ("15,10", point.ToString());
1053
1054   Shell::GetInstance()->RemovePreTargetHandler(&event_handler);
1055 }
1056
1057 TEST_F(DisplayControllerTest, Rotate) {
1058   if (!SupportsMultipleDisplays())
1059     return;
1060
1061   DisplayManager* display_manager = Shell::GetInstance()->display_manager();
1062   TestEventHandler event_handler;
1063   Shell::GetInstance()->AddPreTargetHandler(&event_handler);
1064
1065   UpdateDisplay("120x200,300x400*2");
1066   gfx::Display display1 = Shell::GetScreen()->GetPrimaryDisplay();
1067   int64 display2_id = ScreenUtil::GetSecondaryDisplay().id();
1068   aura::Window::Windows root_windows = Shell::GetAllRootWindows();
1069   ui::test::EventGenerator generator1(root_windows[0]);
1070
1071   TestObserver observer;
1072   EXPECT_EQ("120x200", root_windows[0]->bounds().size().ToString());
1073   EXPECT_EQ("150x200", root_windows[1]->bounds().size().ToString());
1074   EXPECT_EQ("120,0 150x200",
1075             ScreenUtil::GetSecondaryDisplay().bounds().ToString());
1076   generator1.MoveMouseToInHost(50, 40);
1077   EXPECT_EQ("50,40", event_handler.GetLocationAndReset());
1078   EXPECT_EQ(gfx::Display::ROTATE_0, GetStoredRotation(display1.id()));
1079   EXPECT_EQ(gfx::Display::ROTATE_0, GetStoredRotation(display2_id));
1080   EXPECT_EQ(0, observer.GetRotationChangedCountAndReset());
1081
1082   display_manager->SetDisplayRotation(display1.id(),
1083                                       gfx::Display::ROTATE_90);
1084   EXPECT_EQ("200x120", root_windows[0]->bounds().size().ToString());
1085   EXPECT_EQ("150x200", root_windows[1]->bounds().size().ToString());
1086   EXPECT_EQ("200,0 150x200",
1087             ScreenUtil::GetSecondaryDisplay().bounds().ToString());
1088   generator1.MoveMouseToInHost(50, 40);
1089   EXPECT_EQ("40,69", event_handler.GetLocationAndReset());
1090   EXPECT_EQ(gfx::Display::ROTATE_90, GetStoredRotation(display1.id()));
1091   EXPECT_EQ(gfx::Display::ROTATE_0, GetStoredRotation(display2_id));
1092   EXPECT_EQ(1, observer.GetRotationChangedCountAndReset());
1093
1094   DisplayLayout display_layout(DisplayLayout::BOTTOM, 50);
1095   display_manager->SetLayoutForCurrentDisplays(display_layout);
1096   EXPECT_EQ("50,120 150x200",
1097             ScreenUtil::GetSecondaryDisplay().bounds().ToString());
1098
1099   display_manager->SetDisplayRotation(display2_id,
1100                                       gfx::Display::ROTATE_270);
1101   EXPECT_EQ("200x120", root_windows[0]->bounds().size().ToString());
1102   EXPECT_EQ("200x150", root_windows[1]->bounds().size().ToString());
1103   EXPECT_EQ("50,120 200x150",
1104             ScreenUtil::GetSecondaryDisplay().bounds().ToString());
1105   EXPECT_EQ(gfx::Display::ROTATE_90, GetStoredRotation(display1.id()));
1106   EXPECT_EQ(gfx::Display::ROTATE_270, GetStoredRotation(display2_id));
1107   EXPECT_EQ(1, observer.GetRotationChangedCountAndReset());
1108
1109 #if !defined(OS_WIN)
1110   ui::test::EventGenerator generator2(root_windows[1]);
1111   generator2.MoveMouseToInHost(50, 40);
1112   EXPECT_EQ("179,25", event_handler.GetLocationAndReset());
1113   display_manager->SetDisplayRotation(display1.id(),
1114                                       gfx::Display::ROTATE_180);
1115
1116   EXPECT_EQ("120x200", root_windows[0]->bounds().size().ToString());
1117   EXPECT_EQ("200x150", root_windows[1]->bounds().size().ToString());
1118   // Dislay must share at least 100, so the x's offset becomes 20.
1119   EXPECT_EQ("20,200 200x150",
1120             ScreenUtil::GetSecondaryDisplay().bounds().ToString());
1121   EXPECT_EQ(gfx::Display::ROTATE_180, GetStoredRotation(display1.id()));
1122   EXPECT_EQ(gfx::Display::ROTATE_270, GetStoredRotation(display2_id));
1123   EXPECT_EQ(1, observer.GetRotationChangedCountAndReset());
1124
1125   generator1.MoveMouseToInHost(50, 40);
1126   EXPECT_EQ("69,159", event_handler.GetLocationAndReset());
1127 #endif
1128
1129   Shell::GetInstance()->RemovePreTargetHandler(&event_handler);
1130 }
1131
1132 TEST_F(DisplayControllerTest, ScaleRootWindow) {
1133   if (!SupportsMultipleDisplays())
1134     return;
1135
1136   TestEventHandler event_handler;
1137   Shell::GetInstance()->AddPreTargetHandler(&event_handler);
1138
1139   UpdateDisplay("600x400*2@1.5,500x300");
1140
1141   gfx::Display display1 = Shell::GetScreen()->GetPrimaryDisplay();
1142   gfx::Display::SetInternalDisplayId(display1.id());
1143
1144   gfx::Display display2 = ScreenUtil::GetSecondaryDisplay();
1145   aura::Window::Windows root_windows = Shell::GetAllRootWindows();
1146   EXPECT_EQ("0,0 450x300", display1.bounds().ToString());
1147   EXPECT_EQ("0,0 450x300", root_windows[0]->bounds().ToString());
1148   EXPECT_EQ("450,0 500x300", display2.bounds().ToString());
1149   EXPECT_EQ(1.5f, GetStoredUIScale(display1.id()));
1150   EXPECT_EQ(1.0f, GetStoredUIScale(display2.id()));
1151
1152   ui::test::EventGenerator generator(root_windows[0]);
1153   generator.MoveMouseToInHost(599, 200);
1154   EXPECT_EQ("449,150", event_handler.GetLocationAndReset());
1155
1156   DisplayManager* display_manager = Shell::GetInstance()->display_manager();
1157   display_manager->SetDisplayUIScale(display1.id(), 1.25f);
1158   display1 = Shell::GetScreen()->GetPrimaryDisplay();
1159   display2 = ScreenUtil::GetSecondaryDisplay();
1160   EXPECT_EQ("0,0 375x250", display1.bounds().ToString());
1161   EXPECT_EQ("0,0 375x250", root_windows[0]->bounds().ToString());
1162   EXPECT_EQ("375,0 500x300", display2.bounds().ToString());
1163   EXPECT_EQ(1.25f, GetStoredUIScale(display1.id()));
1164   EXPECT_EQ(1.0f, GetStoredUIScale(display2.id()));
1165
1166   Shell::GetInstance()->RemovePreTargetHandler(&event_handler);
1167 }
1168
1169 TEST_F(DisplayControllerTest, TouchScale) {
1170   if (!SupportsMultipleDisplays())
1171     return;
1172
1173   TestEventHandler event_handler;
1174   Shell::GetInstance()->AddPreTargetHandler(&event_handler);
1175
1176   UpdateDisplay("200x200*2");
1177   gfx::Display display = Shell::GetScreen()->GetPrimaryDisplay();
1178   aura::Window::Windows root_windows = Shell::GetAllRootWindows();
1179   aura::Window* root_window = root_windows[0];
1180   ui::test::EventGenerator generator(root_window);
1181
1182   generator.PressMoveAndReleaseTouchTo(50, 50);
1183   // Default test touches have radius_x/y = 1.0, with device scale
1184   // factor = 2, the scaled radius_x/y should be 0.5.
1185   EXPECT_EQ(0.5, event_handler.touch_radius_x());
1186   EXPECT_EQ(0.5, event_handler.touch_radius_y());
1187
1188   generator.ScrollSequence(gfx::Point(0,0),
1189                            base::TimeDelta::FromMilliseconds(100),
1190                            10.0, 1.0, 5, 1);
1191
1192   // ordinal_offset is invariant to the device scale factor.
1193   EXPECT_EQ(event_handler.scroll_x_offset(),
1194             event_handler.scroll_x_offset_ordinal());
1195   EXPECT_EQ(event_handler.scroll_y_offset(),
1196             event_handler.scroll_y_offset_ordinal());
1197
1198   Shell::GetInstance()->RemovePreTargetHandler(&event_handler);
1199 }
1200
1201 TEST_F(DisplayControllerTest, ConvertHostToRootCoords) {
1202   if (!SupportsMultipleDisplays())
1203     return;
1204
1205   TestEventHandler event_handler;
1206   Shell::GetInstance()->AddPreTargetHandler(&event_handler);
1207
1208   UpdateDisplay("600x400*2/r@1.5");
1209
1210   gfx::Display display1 = Shell::GetScreen()->GetPrimaryDisplay();
1211   aura::Window::Windows root_windows = Shell::GetAllRootWindows();
1212   EXPECT_EQ("0,0 300x450", display1.bounds().ToString());
1213   EXPECT_EQ("0,0 300x450", root_windows[0]->bounds().ToString());
1214   EXPECT_EQ(1.5f, GetStoredUIScale(display1.id()));
1215
1216   ui::test::EventGenerator generator(root_windows[0]);
1217   generator.MoveMouseToInHost(0, 0);
1218   EXPECT_EQ("0,449", event_handler.GetLocationAndReset());
1219   generator.MoveMouseToInHost(599, 0);
1220   EXPECT_EQ("0,0", event_handler.GetLocationAndReset());
1221   generator.MoveMouseToInHost(599, 399);
1222   EXPECT_EQ("299,0", event_handler.GetLocationAndReset());
1223   generator.MoveMouseToInHost(0, 399);
1224   EXPECT_EQ("299,449", event_handler.GetLocationAndReset());
1225
1226   UpdateDisplay("600x400*2/u@1.5");
1227   display1 = Shell::GetScreen()->GetPrimaryDisplay();
1228   root_windows = Shell::GetAllRootWindows();
1229   EXPECT_EQ("0,0 450x300", display1.bounds().ToString());
1230   EXPECT_EQ("0,0 450x300", root_windows[0]->bounds().ToString());
1231   EXPECT_EQ(1.5f, GetStoredUIScale(display1.id()));
1232
1233   generator.MoveMouseToInHost(0, 0);
1234   EXPECT_EQ("449,299", event_handler.GetLocationAndReset());
1235   generator.MoveMouseToInHost(599, 0);
1236   EXPECT_EQ("0,299", event_handler.GetLocationAndReset());
1237   generator.MoveMouseToInHost(599, 399);
1238   EXPECT_EQ("0,0", event_handler.GetLocationAndReset());
1239   generator.MoveMouseToInHost(0, 399);
1240   EXPECT_EQ("449,0", event_handler.GetLocationAndReset());
1241
1242   UpdateDisplay("600x400*2/l@1.5");
1243   display1 = Shell::GetScreen()->GetPrimaryDisplay();
1244   root_windows = Shell::GetAllRootWindows();
1245   EXPECT_EQ("0,0 300x450", display1.bounds().ToString());
1246   EXPECT_EQ("0,0 300x450", root_windows[0]->bounds().ToString());
1247   EXPECT_EQ(1.5f, GetStoredUIScale(display1.id()));
1248
1249   generator.MoveMouseToInHost(0, 0);
1250   EXPECT_EQ("299,0", event_handler.GetLocationAndReset());
1251   generator.MoveMouseToInHost(599, 0);
1252   EXPECT_EQ("299,449", event_handler.GetLocationAndReset());
1253   generator.MoveMouseToInHost(599, 399);
1254   EXPECT_EQ("0,449", event_handler.GetLocationAndReset());
1255   generator.MoveMouseToInHost(0, 399);
1256   EXPECT_EQ("0,0", event_handler.GetLocationAndReset());
1257
1258   Shell::GetInstance()->RemovePreTargetHandler(&event_handler);
1259 }
1260
1261 namespace {
1262
1263 DisplayInfo CreateDisplayInfo(int64 id,
1264                               int y,
1265                               gfx::Display::Rotation rotation) {
1266   DisplayInfo info(id, "", false);
1267   info.SetBounds(gfx::Rect(0, y, 500, 500));
1268   info.set_rotation(rotation);
1269   return info;
1270 }
1271
1272 }  // namespace
1273
1274 // Make sure that the compositor based mirroring can switch
1275 // from/to dock mode.
1276 TEST_F(DisplayControllerTest, DockToSingle) {
1277   if (!SupportsMultipleDisplays())
1278     return;
1279
1280   DisplayManager* display_manager = Shell::GetInstance()->display_manager();
1281
1282   const int64 internal_id = 1;
1283
1284   const DisplayInfo internal_display_info =
1285       CreateDisplayInfo(internal_id, 0, gfx::Display::ROTATE_0);
1286   const DisplayInfo external_display_info =
1287       CreateDisplayInfo(2, 1, gfx::Display::ROTATE_90);
1288
1289   std::vector<DisplayInfo> display_info_list;
1290   // Extended
1291   display_info_list.push_back(internal_display_info);
1292   display_info_list.push_back(external_display_info);
1293   display_manager->OnNativeDisplaysChanged(display_info_list);
1294   const int64 internal_display_id =
1295       test::DisplayManagerTestApi(display_manager).
1296       SetFirstDisplayAsInternalDisplay();
1297   EXPECT_EQ(internal_id, internal_display_id);
1298   EXPECT_EQ(2U, display_manager->GetNumDisplays());
1299
1300   // Dock mode.
1301   display_info_list.clear();
1302   display_info_list.push_back(external_display_info);
1303   display_manager->OnNativeDisplaysChanged(display_info_list);
1304   EXPECT_EQ(1U, display_manager->GetNumDisplays());
1305   EXPECT_FALSE(Shell::GetPrimaryRootWindow()->GetHost()->
1306                GetRootTransform().IsIdentityOrIntegerTranslation());
1307
1308   // Switch to single mode and make sure the transform is the one
1309   // for the internal display.
1310   display_info_list.clear();
1311   display_info_list.push_back(internal_display_info);
1312   display_manager->OnNativeDisplaysChanged(display_info_list);
1313   EXPECT_TRUE(Shell::GetPrimaryRootWindow()->GetHost()->
1314               GetRootTransform().IsIdentityOrIntegerTranslation());
1315 }
1316
1317 #if defined(USE_X11)
1318 TEST_F(DisplayControllerTest, XWidowNameForRootWindow) {
1319   EXPECT_EQ("aura_root_0", GetXWindowName(
1320       Shell::GetPrimaryRootWindow()->GetHost()));
1321
1322   // Multiple display.
1323   UpdateDisplay("200x200,300x300");
1324   aura::Window* primary, *secondary;
1325   GetPrimaryAndSeconary(&primary, &secondary);
1326   EXPECT_EQ("aura_root_0", GetXWindowName(primary->GetHost()));
1327   EXPECT_EQ("aura_root_x", GetXWindowName(secondary->GetHost()));
1328
1329   // Swap primary.
1330   primary = secondary = NULL;
1331   Shell::GetInstance()->display_controller()->SwapPrimaryDisplay();
1332   GetPrimaryAndSeconary(&primary, &secondary);
1333   EXPECT_EQ("aura_root_0", GetXWindowName(primary->GetHost()));
1334   EXPECT_EQ("aura_root_x", GetXWindowName(secondary->GetHost()));
1335
1336   // Switching back to single display.
1337   UpdateDisplay("300x400");
1338   EXPECT_EQ("aura_root_0", GetXWindowName(
1339       Shell::GetPrimaryRootWindow()->GetHost()));
1340 }
1341 #endif
1342
1343 }  // namespace ash