ash/display/display_manager_unittest.cc

   1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "ash/display/display_manager.h"
   6
   7 #include "ash/ash_switches.h"
   8 #include "ash/display/display_controller.h"
   9 #include "ash/display/display_info.h"
  10 #include "ash/display/display_layout_store.h"
  11 #include "ash/display/display_util.h"
  12 #include "ash/display/mirror_window_controller.h"
  13 #include "ash/screen_util.h"
  14 #include "ash/shell.h"
  15 #include "ash/test/ash_test_base.h"
  16 #include "ash/test/display_manager_test_api.h"
  17 #include "ash/test/mirror_window_test_api.h"
  18 #include "base/command_line.h"
  19 #include "base/format_macros.h"
  20 #include "base/strings/string_number_conversions.h"
  21 #include "base/strings/stringprintf.h"
  22 #include "ui/aura/env.h"
  23 #include "ui/aura/window_observer.h"
  24 #include "ui/aura/window_tree_host.h"
  25 #include "ui/events/test/event_generator.h"
  26 #include "ui/gfx/display.h"
  27 #include "ui/gfx/display_observer.h"
  28 #include "ui/gfx/font_render_params.h"
  29 #include "ui/gfx/screen.h"
  30 #include "ui/gfx/screen_type_delegate.h"
  31
  32 namespace ash {
  33
  34 using std::vector;
  35 using std::string;
  36
  37 using base::StringPrintf;
  38
  39 namespace {
  40
  41 std::string ToDisplayName(int64 id) {
  42   return "x-" + base::Int64ToString(id);
  43 }
  44
  45 }  // namespace
  46
  47 class DisplayManagerTest : public test::AshTestBase,
  48                            public gfx::DisplayObserver,
  49                            public aura::WindowObserver {
  50  public:
  51   DisplayManagerTest()
  52       : removed_count_(0U),
  53         root_window_destroyed_(false),
  54         changed_metrics_(0U) {
  55   }
  56   ~DisplayManagerTest() override {}
  57
  58   void SetUp() override {
  59     AshTestBase::SetUp();
  60     Shell::GetScreen()->AddObserver(this);
  61     Shell::GetPrimaryRootWindow()->AddObserver(this);
  62   }
  63   void TearDown() override {
  64     Shell::GetPrimaryRootWindow()->RemoveObserver(this);
  65     Shell::GetScreen()->RemoveObserver(this);
  66     AshTestBase::TearDown();
  67   }
  68
  69   DisplayManager* display_manager() {
  70     return Shell::GetInstance()->display_manager();
  71   }
  72   const vector<gfx::Display>& changed() const { return changed_; }
  73   const vector<gfx::Display>& added() const { return added_; }
  74   uint32_t changed_metrics() const { return changed_metrics_; }
  75
  76   string GetCountSummary() const {
  77     return StringPrintf("%" PRIuS " %" PRIuS " %" PRIuS,
  78                         changed_.size(), added_.size(), removed_count_);
  79   }
  80
  81   void reset() {
  82     changed_.clear();
  83     added_.clear();
  84     removed_count_ = 0U;
  85     changed_metrics_ = 0U;
  86     root_window_destroyed_ = false;
  87   }
  88
  89   bool root_window_destroyed() const {
  90     return root_window_destroyed_;
  91   }
  92
  93   const DisplayInfo& GetDisplayInfo(const gfx::Display& display) {
  94     return display_manager()->GetDisplayInfo(display.id());
  95   }
  96
  97   const DisplayInfo& GetDisplayInfoAt(int index) {
  98     return GetDisplayInfo(display_manager()->GetDisplayAt(index));
  99   }
 100
 101   const gfx::Display& GetDisplayForId(int64 id) {
 102     return display_manager()->GetDisplayForId(id);
 103   }
 104
 105   const DisplayInfo& GetDisplayInfoForId(int64 id) {
 106     return GetDisplayInfo(display_manager()->GetDisplayForId(id));
 107   }
 108
 109   // aura::DisplayObserver overrides:
 110   void OnDisplayMetricsChanged(const gfx::Display& display,
 111                                uint32_t changed_metrics) override {
 112     changed_.push_back(display);
 113     changed_metrics_ |= changed_metrics;
 114   }
 115   void OnDisplayAdded(const gfx::Display& new_display) override {
 116     added_.push_back(new_display);
 117   }
 118   void OnDisplayRemoved(const gfx::Display& old_display) override {
 119     ++removed_count_;
 120   }
 121
 122   // aura::WindowObserver overrides:
 123   void OnWindowDestroying(aura::Window* window) override {
 124     ASSERT_EQ(Shell::GetPrimaryRootWindow(), window);
 125     root_window_destroyed_ = true;
 126   }
 127
 128  private:
 129   vector<gfx::Display> changed_;
 130   vector<gfx::Display> added_;
 131   size_t removed_count_;
 132   bool root_window_destroyed_;
 133   uint32_t changed_metrics_;
 134
 135   DISALLOW_COPY_AND_ASSIGN(DisplayManagerTest);
 136 };
 137
 138 TEST_F(DisplayManagerTest, UpdateDisplayTest) {
 139   if (!SupportsMultipleDisplays())
 140     return;
 141
 142   EXPECT_EQ(1U, display_manager()->GetNumDisplays());
 143
 144   // Update primary and add seconary.
 145   UpdateDisplay("100+0-500x500,0+501-400x400");
 146   EXPECT_EQ(2U, display_manager()->GetNumDisplays());
 147   EXPECT_EQ("0,0 500x500",
 148             display_manager()->GetDisplayAt(0).bounds().ToString());
 149
 150   EXPECT_EQ("1 1 0", GetCountSummary());
 151   EXPECT_EQ(display_manager()->GetDisplayAt(0).id(), changed()[0].id());
 152   EXPECT_EQ(display_manager()->GetDisplayAt(1).id(), added()[0].id());
 153   EXPECT_EQ("0,0 500x500", changed()[0].bounds().ToString());
 154   // Secondary display is on right.
 155   EXPECT_EQ("500,0 400x400", added()[0].bounds().ToString());
 156   EXPECT_EQ("0,501 400x400",
 157             GetDisplayInfo(added()[0]).bounds_in_native().ToString());
 158   reset();
 159
 160   // Delete secondary.
 161   UpdateDisplay("100+0-500x500");
 162   EXPECT_EQ("0 0 1", GetCountSummary());
 163   reset();
 164
 165   // Change primary.
 166   UpdateDisplay("1+1-1000x600");
 167   EXPECT_EQ("1 0 0", GetCountSummary());
 168   EXPECT_EQ(display_manager()->GetDisplayAt(0).id(), changed()[0].id());
 169   EXPECT_EQ("0,0 1000x600", changed()[0].bounds().ToString());
 170   reset();
 171
 172   // Add secondary.
 173   UpdateDisplay("1+1-1000x600,1002+0-600x400");
 174   EXPECT_EQ(2U, display_manager()->GetNumDisplays());
 175   EXPECT_EQ("0 1 0", GetCountSummary());
 176   EXPECT_EQ(display_manager()->GetDisplayAt(1).id(), added()[0].id());
 177   // Secondary display is on right.
 178   EXPECT_EQ("1000,0 600x400", added()[0].bounds().ToString());
 179   EXPECT_EQ("1002,0 600x400",
 180             GetDisplayInfo(added()[0]).bounds_in_native().ToString());
 181   reset();
 182
 183   // Secondary removed, primary changed.
 184   UpdateDisplay("1+1-800x300");
 185   EXPECT_EQ(1U, display_manager()->GetNumDisplays());
 186   EXPECT_EQ("1 0 1", GetCountSummary());
 187   EXPECT_EQ(display_manager()->GetDisplayAt(0).id(), changed()[0].id());
 188   EXPECT_EQ("0,0 800x300", changed()[0].bounds().ToString());
 189   reset();
 190
 191   // # of display can go to zero when screen is off.
 192   const vector<DisplayInfo> empty;
 193   display_manager()->OnNativeDisplaysChanged(empty);
 194   EXPECT_EQ(1U, display_manager()->GetNumDisplays());
 195   EXPECT_EQ("0 0 0", GetCountSummary());
 196   EXPECT_FALSE(root_window_destroyed());
 197   // Display configuration stays the same
 198   EXPECT_EQ("0,0 800x300",
 199             display_manager()->GetDisplayAt(0).bounds().ToString());
 200   reset();
 201
 202   // Connect to display again
 203   UpdateDisplay("100+100-500x400");
 204   EXPECT_EQ(1U, display_manager()->GetNumDisplays());
 205   EXPECT_EQ("1 0 0", GetCountSummary());
 206   EXPECT_FALSE(root_window_destroyed());
 207   EXPECT_EQ("0,0 500x400", changed()[0].bounds().ToString());
 208   EXPECT_EQ("100,100 500x400",
 209             GetDisplayInfo(changed()[0]).bounds_in_native().ToString());
 210   reset();
 211
 212   // Go back to zero and wake up with multiple displays.
 213   display_manager()->OnNativeDisplaysChanged(empty);
 214   EXPECT_EQ(1U, display_manager()->GetNumDisplays());
 215   EXPECT_FALSE(root_window_destroyed());
 216   reset();
 217
 218   // Add secondary.
 219   UpdateDisplay("0+0-1000x600,1000+1000-600x400");
 220   EXPECT_EQ(2U, display_manager()->GetNumDisplays());
 221   EXPECT_EQ("0,0 1000x600",
 222             display_manager()->GetDisplayAt(0).bounds().ToString());
 223   // Secondary display is on right.
 224   EXPECT_EQ("1000,0 600x400",
 225             display_manager()->GetDisplayAt(1).bounds().ToString());
 226   EXPECT_EQ("1000,1000 600x400",
 227             GetDisplayInfoAt(1).bounds_in_native().ToString());
 228   reset();
 229
 230   // Changing primary will update secondary as well.
 231   UpdateDisplay("0+0-800x600,1000+1000-600x400");
 232   EXPECT_EQ("2 0 0", GetCountSummary());
 233   reset();
 234   EXPECT_EQ("0,0 800x600",
 235             display_manager()->GetDisplayAt(0).bounds().ToString());
 236   EXPECT_EQ("800,0 600x400",
 237             display_manager()->GetDisplayAt(1).bounds().ToString());
 238 }
 239
 240 TEST_F(DisplayManagerTest, ScaleOnlyChange) {
 241   if (!SupportsMultipleDisplays())
 242     return;
 243   display_manager()->ToggleDisplayScaleFactor();
 244   EXPECT_TRUE(changed_metrics() & gfx::DisplayObserver::DISPLAY_METRIC_BOUNDS);
 245   EXPECT_TRUE(changed_metrics() &
 246               gfx::DisplayObserver::DISPLAY_METRIC_WORK_AREA);
 247 }
 248
 249 // Test in emulation mode (use_fullscreen_host_window=false)
 250 TEST_F(DisplayManagerTest, EmulatorTest) {
 251   if (!SupportsMultipleDisplays())
 252     return;
 253
 254   EXPECT_EQ(1U, display_manager()->GetNumDisplays());
 255
 256   display_manager()->AddRemoveDisplay();
 257   // Update primary and add seconary.
 258   EXPECT_EQ(2U, display_manager()->GetNumDisplays());
 259   EXPECT_EQ("0 1 0", GetCountSummary());
 260   reset();
 261
 262   display_manager()->AddRemoveDisplay();
 263   EXPECT_EQ(1U, display_manager()->GetNumDisplays());
 264   EXPECT_EQ("0 0 1", GetCountSummary());
 265   reset();
 266
 267   display_manager()->AddRemoveDisplay();
 268   EXPECT_EQ(2U, display_manager()->GetNumDisplays());
 269   EXPECT_EQ("0 1 0", GetCountSummary());
 270   reset();
 271 }
 272
 273 // Tests support for 3 displays.
 274 TEST_F(DisplayManagerTest, UpdateThreeDisplaysTest) {
 275   if (!SupportsMultipleDisplays())
 276     return;
 277
 278   EXPECT_EQ(1U, display_manager()->GetNumDisplays());
 279
 280   // Test with three displays.
 281   UpdateDisplay("0+0-640x480,640+0-320x200,960+0-400x300");
 282   EXPECT_EQ(3U, display_manager()->GetNumDisplays());
 283   EXPECT_EQ("0,0 640x480",
 284             display_manager()->GetDisplayAt(0).bounds().ToString());
 285   EXPECT_EQ("640,0 320x200",
 286             display_manager()->GetDisplayAt(1).bounds().ToString());
 287   EXPECT_EQ("960,0 400x300",
 288             display_manager()->GetDisplayAt(2).bounds().ToString());
 289
 290   EXPECT_EQ("1 2 0", GetCountSummary());
 291   EXPECT_EQ(display_manager()->GetDisplayAt(0).id(), changed()[0].id());
 292   EXPECT_EQ(display_manager()->GetDisplayAt(1).id(), added()[0].id());
 293   EXPECT_EQ(display_manager()->GetDisplayAt(2).id(), added()[1].id());
 294   EXPECT_EQ("0,0 640x480", changed()[0].bounds().ToString());
 295   // Secondary and terniary displays are on right.
 296   EXPECT_EQ("640,0 320x200", added()[0].bounds().ToString());
 297   EXPECT_EQ("640,0 320x200",
 298             GetDisplayInfo(added()[0]).bounds_in_native().ToString());
 299   EXPECT_EQ("960,0 400x300", added()[1].bounds().ToString());
 300   EXPECT_EQ("960,0 400x300",
 301             GetDisplayInfo(added()[1]).bounds_in_native().ToString());
 302   reset();
 303 }
 304
 305 TEST_F(DisplayManagerTest, OverscanInsetsTest) {
 306   if (!SupportsMultipleDisplays())
 307     return;
 308
 309   UpdateDisplay("0+0-500x500,0+501-400x400");
 310   reset();
 311   ASSERT_EQ(2u, display_manager()->GetNumDisplays());
 312   const DisplayInfo& display_info1 = GetDisplayInfoAt(0);
 313   const DisplayInfo& display_info2 = GetDisplayInfoAt(1);
 314   display_manager()->SetOverscanInsets(
 315       display_info2.id(), gfx::Insets(13, 12, 11, 10));
 316
 317   std::vector<gfx::Display> changed_displays = changed();
 318   EXPECT_EQ(1u, changed_displays.size());
 319   EXPECT_EQ(display_info2.id(), changed_displays[0].id());
 320   EXPECT_EQ("0,0 500x500",
 321             GetDisplayInfoAt(0).bounds_in_native().ToString());
 322   DisplayInfo updated_display_info2 = GetDisplayInfoAt(1);
 323   EXPECT_EQ("0,501 400x400",
 324             updated_display_info2.bounds_in_native().ToString());
 325   EXPECT_EQ("378x376",
 326             updated_display_info2.size_in_pixel().ToString());
 327   EXPECT_EQ("13,12,11,10",
 328             updated_display_info2.overscan_insets_in_dip().ToString());
 329   EXPECT_EQ("500,0 378x376",
 330             ScreenUtil::GetSecondaryDisplay().bounds().ToString());
 331
 332   // Make sure that SetOverscanInsets() is idempotent.
 333   display_manager()->SetOverscanInsets(display_info1.id(), gfx::Insets());
 334   display_manager()->SetOverscanInsets(
 335       display_info2.id(), gfx::Insets(13, 12, 11, 10));
 336   EXPECT_EQ("0,0 500x500",
 337             GetDisplayInfoAt(0).bounds_in_native().ToString());
 338   updated_display_info2 = GetDisplayInfoAt(1);
 339   EXPECT_EQ("0,501 400x400",
 340             updated_display_info2.bounds_in_native().ToString());
 341   EXPECT_EQ("378x376",
 342             updated_display_info2.size_in_pixel().ToString());
 343   EXPECT_EQ("13,12,11,10",
 344             updated_display_info2.overscan_insets_in_dip().ToString());
 345
 346   display_manager()->SetOverscanInsets(
 347       display_info2.id(), gfx::Insets(10, 11, 12, 13));
 348   EXPECT_EQ("0,0 500x500",
 349             GetDisplayInfoAt(0).bounds_in_native().ToString());
 350   EXPECT_EQ("376x378",
 351             GetDisplayInfoAt(1).size_in_pixel().ToString());
 352   EXPECT_EQ("10,11,12,13",
 353             GetDisplayInfoAt(1).overscan_insets_in_dip().ToString());
 354
 355   // Recreate a new 2nd display. It won't apply the overscan inset because the
 356   // new display has a different ID.
 357   UpdateDisplay("0+0-500x500");
 358   UpdateDisplay("0+0-500x500,0+501-400x400");
 359   EXPECT_EQ("0,0 500x500",
 360             GetDisplayInfoAt(0).bounds_in_native().ToString());
 361   EXPECT_EQ("0,501 400x400",
 362             GetDisplayInfoAt(1).bounds_in_native().ToString());
 363
 364   // Recreate the displays with the same ID.  It should apply the overscan
 365   // inset.
 366   UpdateDisplay("0+0-500x500");
 367   std::vector<DisplayInfo> display_info_list;
 368   display_info_list.push_back(display_info1);
 369   display_info_list.push_back(display_info2);
 370   display_manager()->OnNativeDisplaysChanged(display_info_list);
 371   EXPECT_EQ("1,1 500x500",
 372             GetDisplayInfoAt(0).bounds_in_native().ToString());
 373   updated_display_info2 = GetDisplayInfoAt(1);
 374   EXPECT_EQ("376x378",
 375             updated_display_info2.size_in_pixel().ToString());
 376   EXPECT_EQ("10,11,12,13",
 377             updated_display_info2.overscan_insets_in_dip().ToString());
 378
 379   // HiDPI but overscan display. The specified insets size should be doubled.
 380   UpdateDisplay("0+0-500x500,0+501-400x400*2");
 381   display_manager()->SetOverscanInsets(
 382       display_manager()->GetDisplayAt(1).id(), gfx::Insets(4, 5, 6, 7));
 383   EXPECT_EQ("0,0 500x500",
 384             GetDisplayInfoAt(0).bounds_in_native().ToString());
 385   updated_display_info2 = GetDisplayInfoAt(1);
 386   EXPECT_EQ("0,501 400x400",
 387             updated_display_info2.bounds_in_native().ToString());
 388   EXPECT_EQ("376x380",
 389             updated_display_info2.size_in_pixel().ToString());
 390   EXPECT_EQ("4,5,6,7",
 391             updated_display_info2.overscan_insets_in_dip().ToString());
 392   EXPECT_EQ("8,10,12,14",
 393             updated_display_info2.GetOverscanInsetsInPixel().ToString());
 394
 395   // Make sure switching primary display applies the overscan offset only once.
 396   ash::Shell::GetInstance()->display_controller()->SetPrimaryDisplay(
 397       ScreenUtil::GetSecondaryDisplay());
 398   EXPECT_EQ("-500,0 500x500",
 399             ScreenUtil::GetSecondaryDisplay().bounds().ToString());
 400   EXPECT_EQ("0,0 500x500",
 401             GetDisplayInfo(ScreenUtil::GetSecondaryDisplay()).
 402             bounds_in_native().ToString());
 403   EXPECT_EQ("0,501 400x400",
 404             GetDisplayInfo(Shell::GetScreen()->GetPrimaryDisplay()).
 405             bounds_in_native().ToString());
 406   EXPECT_EQ("0,0 188x190",
 407             Shell::GetScreen()->GetPrimaryDisplay().bounds().ToString());
 408
 409   // Make sure just moving the overscan area should property notify observers.
 410   UpdateDisplay("0+0-500x500");
 411   int64 primary_id = Shell::GetScreen()->GetPrimaryDisplay().id();
 412   display_manager()->SetOverscanInsets(primary_id, gfx::Insets(0, 0, 20, 20));
 413   EXPECT_EQ("0,0 480x480",
 414             Shell::GetScreen()->GetPrimaryDisplay().bounds().ToString());
 415   reset();
 416   display_manager()->SetOverscanInsets(primary_id, gfx::Insets(10, 10, 10, 10));
 417   EXPECT_TRUE(changed_metrics() & gfx::DisplayObserver::DISPLAY_METRIC_BOUNDS);
 418   EXPECT_TRUE(
 419       changed_metrics() & gfx::DisplayObserver::DISPLAY_METRIC_WORK_AREA);
 420   EXPECT_EQ("0,0 480x480",
 421             Shell::GetScreen()->GetPrimaryDisplay().bounds().ToString());
 422   reset();
 423   display_manager()->SetOverscanInsets(primary_id, gfx::Insets(0, 0, 0, 0));
 424   EXPECT_TRUE(changed_metrics() & gfx::DisplayObserver::DISPLAY_METRIC_BOUNDS);
 425   EXPECT_TRUE(
 426       changed_metrics() & gfx::DisplayObserver::DISPLAY_METRIC_WORK_AREA);
 427   EXPECT_EQ("0,0 500x500",
 428             Shell::GetScreen()->GetPrimaryDisplay().bounds().ToString());
 429 }
 430
 431 TEST_F(DisplayManagerTest, ZeroOverscanInsets) {
 432   if (!SupportsMultipleDisplays())
 433     return;
 434
 435   // Make sure the display change events is emitted for overscan inset changes.
 436   UpdateDisplay("0+0-500x500,0+501-400x400");
 437   ASSERT_EQ(2u, display_manager()->GetNumDisplays());
 438   int64 display2_id = display_manager()->GetDisplayAt(1).id();
 439
 440   reset();
 441   display_manager()->SetOverscanInsets(display2_id, gfx::Insets(0, 0, 0, 0));
 442   EXPECT_EQ(0u, changed().size());
 443
 444   reset();
 445   display_manager()->SetOverscanInsets(display2_id, gfx::Insets(1, 0, 0, 0));
 446   EXPECT_EQ(1u, changed().size());
 447   EXPECT_EQ(display2_id, changed()[0].id());
 448
 449   reset();
 450   display_manager()->SetOverscanInsets(display2_id, gfx::Insets(0, 0, 0, 0));
 451   EXPECT_EQ(1u, changed().size());
 452   EXPECT_EQ(display2_id, changed()[0].id());
 453 }
 454
 455 TEST_F(DisplayManagerTest, TestDeviceScaleOnlyChange) {
 456   if (!SupportsHostWindowResize())
 457     return;
 458
 459   UpdateDisplay("1000x600");
 460   aura::WindowTreeHost* host = Shell::GetPrimaryRootWindow()->GetHost();
 461   EXPECT_EQ(1, host->compositor()->device_scale_factor());
 462   EXPECT_EQ("1000x600",
 463             Shell::GetPrimaryRootWindow()->bounds().size().ToString());
 464   EXPECT_EQ("1 0 0", GetCountSummary());
 465
 466   UpdateDisplay("1000x600*2");
 467   EXPECT_EQ(2, host->compositor()->device_scale_factor());
 468   EXPECT_EQ("2 0 0", GetCountSummary());
 469   EXPECT_EQ("500x300",
 470             Shell::GetPrimaryRootWindow()->bounds().size().ToString());
 471 }
 472
 473 DisplayInfo CreateDisplayInfo(int64 id, const gfx::Rect& bounds) {
 474   DisplayInfo info(id, ToDisplayName(id), false);
 475   info.SetBounds(bounds);
 476   return info;
 477 }
 478
 479 TEST_F(DisplayManagerTest, TestNativeDisplaysChanged) {
 480   const int64 internal_display_id =
 481       test::DisplayManagerTestApi(display_manager()).
 482       SetFirstDisplayAsInternalDisplay();
 483   const int external_id = 10;
 484   const int mirror_id = 11;
 485   const int64 invalid_id = gfx::Display::kInvalidDisplayID;
 486   const DisplayInfo internal_display_info =
 487       CreateDisplayInfo(internal_display_id, gfx::Rect(0, 0, 500, 500));
 488   const DisplayInfo external_display_info =
 489       CreateDisplayInfo(external_id, gfx::Rect(1, 1, 100, 100));
 490   const DisplayInfo mirrored_display_info =
 491       CreateDisplayInfo(mirror_id, gfx::Rect(0, 0, 500, 500));
 492
 493   EXPECT_EQ(1U, display_manager()->GetNumDisplays());
 494   EXPECT_EQ(1U, display_manager()->num_connected_displays());
 495   std::string default_bounds =
 496       display_manager()->GetDisplayAt(0).bounds().ToString();
 497
 498   std::vector<DisplayInfo> display_info_list;
 499   // Primary disconnected.
 500   display_manager()->OnNativeDisplaysChanged(display_info_list);
 501   EXPECT_EQ(1U, display_manager()->GetNumDisplays());
 502   EXPECT_EQ(default_bounds,
 503             display_manager()->GetDisplayAt(0).bounds().ToString());
 504   EXPECT_EQ(1U, display_manager()->num_connected_displays());
 505   EXPECT_FALSE(display_manager()->IsMirrored());
 506
 507   if (!SupportsMultipleDisplays())
 508     return;
 509
 510   // External connected while primary was disconnected.
 511   display_info_list.push_back(external_display_info);
 512   display_manager()->OnNativeDisplaysChanged(display_info_list);
 513   EXPECT_EQ(1U, display_manager()->GetNumDisplays());
 514
 515   EXPECT_EQ(invalid_id, GetDisplayForId(internal_display_id).id());
 516   EXPECT_EQ("1,1 100x100",
 517             GetDisplayInfoForId(external_id).bounds_in_native().ToString());
 518   EXPECT_EQ(1U, display_manager()->num_connected_displays());
 519   EXPECT_FALSE(display_manager()->IsMirrored());
 520   EXPECT_EQ(external_id, Shell::GetScreen()->GetPrimaryDisplay().id());
 521
 522   EXPECT_EQ(internal_display_id, gfx::Display::InternalDisplayId());
 523
 524   // Primary connected, with different bounds.
 525   display_info_list.clear();
 526   display_info_list.push_back(internal_display_info);
 527   display_info_list.push_back(external_display_info);
 528   display_manager()->OnNativeDisplaysChanged(display_info_list);
 529   EXPECT_EQ(2U, display_manager()->GetNumDisplays());
 530   EXPECT_EQ(internal_display_id, Shell::GetScreen()->GetPrimaryDisplay().id());
 531
 532   // This combinatino is new, so internal display becomes primary.
 533   EXPECT_EQ("0,0 500x500",
 534             GetDisplayForId(internal_display_id).bounds().ToString());
 535   EXPECT_EQ("1,1 100x100",
 536             GetDisplayInfoForId(10).bounds_in_native().ToString());
 537   EXPECT_EQ(2U, display_manager()->num_connected_displays());
 538   EXPECT_FALSE(display_manager()->IsMirrored());
 539   EXPECT_EQ(ToDisplayName(internal_display_id),
 540             display_manager()->GetDisplayNameForId(internal_display_id));
 541
 542   // Emulate suspend.
 543   display_info_list.clear();
 544   display_manager()->OnNativeDisplaysChanged(display_info_list);
 545   EXPECT_EQ(2U, display_manager()->GetNumDisplays());
 546   EXPECT_EQ("0,0 500x500",
 547             GetDisplayForId(internal_display_id).bounds().ToString());
 548   EXPECT_EQ("1,1 100x100",
 549             GetDisplayInfoForId(10).bounds_in_native().ToString());
 550   EXPECT_EQ(2U, display_manager()->num_connected_displays());
 551   EXPECT_FALSE(display_manager()->IsMirrored());
 552   EXPECT_EQ(ToDisplayName(internal_display_id),
 553             display_manager()->GetDisplayNameForId(internal_display_id));
 554
 555   // External display has disconnected then resumed.
 556   display_info_list.push_back(internal_display_info);
 557   display_manager()->OnNativeDisplaysChanged(display_info_list);
 558   EXPECT_EQ(1U, display_manager()->GetNumDisplays());
 559   EXPECT_EQ("0,0 500x500",
 560             GetDisplayForId(internal_display_id).bounds().ToString());
 561   EXPECT_EQ(1U, display_manager()->num_connected_displays());
 562   EXPECT_FALSE(display_manager()->IsMirrored());
 563
 564   // External display was changed during suspend.
 565   display_info_list.push_back(external_display_info);
 566   display_manager()->OnNativeDisplaysChanged(display_info_list);
 567   EXPECT_EQ(2U, display_manager()->GetNumDisplays());
 568   EXPECT_EQ(2U, display_manager()->num_connected_displays());
 569   EXPECT_FALSE(display_manager()->IsMirrored());
 570
 571   // suspend...
 572   display_info_list.clear();
 573   display_manager()->OnNativeDisplaysChanged(display_info_list);
 574   EXPECT_EQ(2U, display_manager()->GetNumDisplays());
 575   EXPECT_EQ(2U, display_manager()->num_connected_displays());
 576   EXPECT_FALSE(display_manager()->IsMirrored());
 577
 578   // and resume with different external display.
 579   display_info_list.push_back(internal_display_info);
 580   display_info_list.push_back(CreateDisplayInfo(12, gfx::Rect(1, 1, 100, 100)));
 581   display_manager()->OnNativeDisplaysChanged(display_info_list);
 582   EXPECT_EQ(2U, display_manager()->GetNumDisplays());
 583   EXPECT_EQ(2U, display_manager()->num_connected_displays());
 584   EXPECT_FALSE(display_manager()->IsMirrored());
 585   EXPECT_FALSE(display_manager()->IsMirrored());
 586
 587   // mirrored...
 588   display_info_list.clear();
 589   display_info_list.push_back(internal_display_info);
 590   display_info_list.push_back(mirrored_display_info);
 591   display_manager()->OnNativeDisplaysChanged(display_info_list);
 592   EXPECT_EQ(1U, display_manager()->GetNumDisplays());
 593   EXPECT_EQ("0,0 500x500",
 594             GetDisplayForId(internal_display_id).bounds().ToString());
 595   EXPECT_EQ(2U, display_manager()->num_connected_displays());
 596   EXPECT_EQ(11U, display_manager()->mirrored_display_id());
 597   EXPECT_TRUE(display_manager()->IsMirrored());
 598
 599   // Test display name.
 600   EXPECT_EQ(ToDisplayName(internal_display_id),
 601             display_manager()->GetDisplayNameForId(internal_display_id));
 602   EXPECT_EQ("x-10", display_manager()->GetDisplayNameForId(10));
 603   EXPECT_EQ("x-11", display_manager()->GetDisplayNameForId(11));
 604   EXPECT_EQ("x-12", display_manager()->GetDisplayNameForId(12));
 605   // Default name for the id that doesn't exist.
 606   EXPECT_EQ("Display 100", display_manager()->GetDisplayNameForId(100));
 607
 608   // and exit mirroring.
 609   display_info_list.clear();
 610   display_info_list.push_back(internal_display_info);
 611   display_info_list.push_back(external_display_info);
 612   display_manager()->OnNativeDisplaysChanged(display_info_list);
 613   EXPECT_EQ(2U, display_manager()->GetNumDisplays());
 614   EXPECT_EQ(2U, display_manager()->num_connected_displays());
 615   EXPECT_FALSE(display_manager()->IsMirrored());
 616   EXPECT_EQ("0,0 500x500",
 617             GetDisplayForId(internal_display_id).bounds().ToString());
 618   EXPECT_EQ("500,0 100x100",
 619             GetDisplayForId(10).bounds().ToString());
 620
 621   // Turn off internal
 622   display_info_list.clear();
 623   display_info_list.push_back(external_display_info);
 624   display_manager()->OnNativeDisplaysChanged(display_info_list);
 625   EXPECT_EQ(1U, display_manager()->GetNumDisplays());
 626   EXPECT_EQ(invalid_id, GetDisplayForId(internal_display_id).id());
 627   EXPECT_EQ("1,1 100x100",
 628             GetDisplayInfoForId(external_id).bounds_in_native().ToString());
 629   EXPECT_EQ(1U, display_manager()->num_connected_displays());
 630   EXPECT_FALSE(display_manager()->IsMirrored());
 631
 632   // Switched to another display
 633   display_info_list.clear();
 634   display_info_list.push_back(internal_display_info);
 635   display_manager()->OnNativeDisplaysChanged(display_info_list);
 636   EXPECT_EQ(1U, display_manager()->GetNumDisplays());
 637   EXPECT_EQ(
 638       "0,0 500x500",
 639       GetDisplayInfoForId(internal_display_id).bounds_in_native().ToString());
 640   EXPECT_EQ(1U, display_manager()->num_connected_displays());
 641   EXPECT_FALSE(display_manager()->IsMirrored());
 642 }
 643
 644 // Make sure crash does not happen if add and remove happens at the same time.
 645 // See: crbug.com/414394
 646 TEST_F(DisplayManagerTest, DisplayAddRemoveAtTheSameTime) {
 647   if (!SupportsMultipleDisplays())
 648     return;
 649
 650   UpdateDisplay("100+0-500x500,0+501-400x400");
 651
 652   const int64 primary_id = DisplayController::GetPrimaryDisplayId();
 653   const int64 secondary_id = ScreenUtil::GetSecondaryDisplay().id();
 654
 655   DisplayInfo primary_info = display_manager()->GetDisplayInfo(primary_id);
 656   DisplayInfo secondary_info = display_manager()->GetDisplayInfo(secondary_id);
 657
 658   // An id which is different from primary and secondary.
 659   const int64 third_id = primary_id + secondary_id;
 660
 661   DisplayInfo third_info =
 662       CreateDisplayInfo(third_id, gfx::Rect(0, 0, 600, 600));
 663
 664   std::vector<DisplayInfo> display_info_list;
 665   display_info_list.push_back(third_info);
 666   display_info_list.push_back(secondary_info);
 667   display_manager()->OnNativeDisplaysChanged(display_info_list);
 668
 669   EXPECT_EQ(third_id, DisplayController::GetPrimaryDisplayId());
 670   EXPECT_EQ("600x600", GetDisplayForId(third_id).size().ToString());
 671   EXPECT_EQ(secondary_id, ScreenUtil::GetSecondaryDisplay().id());
 672 }
 673
 674 #if defined(OS_WIN)
 675 // TODO(scottmg): RootWindow doesn't get resized on Windows
 676 // Ash. http://crbug.com/247916.
 677 #define MAYBE_TestNativeDisplaysChangedNoInternal \
 678         DISABLED_TestNativeDisplaysChangedNoInternal
 679 #else
 680 #define MAYBE_TestNativeDisplaysChangedNoInternal \
 681         TestNativeDisplaysChangedNoInternal
 682 #endif
 683
 684 TEST_F(DisplayManagerTest, MAYBE_TestNativeDisplaysChangedNoInternal) {
 685   EXPECT_EQ(1U, display_manager()->GetNumDisplays());
 686
 687   // Don't change the display info if all displays are disconnected.
 688   std::vector<DisplayInfo> display_info_list;
 689   display_manager()->OnNativeDisplaysChanged(display_info_list);
 690   EXPECT_EQ(1U, display_manager()->GetNumDisplays());
 691
 692   // Connect another display which will become primary.
 693   const DisplayInfo external_display_info =
 694       CreateDisplayInfo(10, gfx::Rect(1, 1, 100, 100));
 695   display_info_list.push_back(external_display_info);
 696   display_manager()->OnNativeDisplaysChanged(display_info_list);
 697   EXPECT_EQ(1U, display_manager()->GetNumDisplays());
 698   EXPECT_EQ("1,1 100x100",
 699             GetDisplayInfoForId(10).bounds_in_native().ToString());
 700   EXPECT_EQ("100x100", ash::Shell::GetPrimaryRootWindow()->GetHost()->
 701       GetBounds().size().ToString());
 702 }
 703
 704 TEST_F(DisplayManagerTest, NativeDisplaysChangedAfterPrimaryChange) {
 705   if (!SupportsMultipleDisplays())
 706     return;
 707
 708   const int64 internal_display_id =
 709       test::DisplayManagerTestApi(display_manager()).
 710       SetFirstDisplayAsInternalDisplay();
 711   const DisplayInfo native_display_info =
 712       CreateDisplayInfo(internal_display_id, gfx::Rect(0, 0, 500, 500));
 713   const DisplayInfo secondary_display_info =
 714       CreateDisplayInfo(10, gfx::Rect(1, 1, 100, 100));
 715
 716   std::vector<DisplayInfo> display_info_list;
 717   display_info_list.push_back(native_display_info);
 718   display_info_list.push_back(secondary_display_info);
 719   display_manager()->OnNativeDisplaysChanged(display_info_list);
 720   EXPECT_EQ(2U, display_manager()->GetNumDisplays());
 721   EXPECT_EQ("0,0 500x500",
 722             GetDisplayForId(internal_display_id).bounds().ToString());
 723   EXPECT_EQ("500,0 100x100", GetDisplayForId(10).bounds().ToString());
 724
 725   ash::Shell::GetInstance()->display_controller()->SetPrimaryDisplay(
 726       GetDisplayForId(secondary_display_info.id()));
 727   EXPECT_EQ("-500,0 500x500",
 728             GetDisplayForId(internal_display_id).bounds().ToString());
 729   EXPECT_EQ("0,0 100x100", GetDisplayForId(10).bounds().ToString());
 730
 731   // OnNativeDisplaysChanged may change the display bounds.  Here makes sure
 732   // nothing changed if the exactly same displays are specified.
 733   display_manager()->OnNativeDisplaysChanged(display_info_list);
 734   EXPECT_EQ("-500,0 500x500",
 735             GetDisplayForId(internal_display_id).bounds().ToString());
 736   EXPECT_EQ("0,0 100x100", GetDisplayForId(10).bounds().ToString());
 737 }
 738
 739 TEST_F(DisplayManagerTest, DontRememberBestResolution) {
 740   int display_id = 1000;
 741   DisplayInfo native_display_info =
 742       CreateDisplayInfo(display_id, gfx::Rect(0, 0, 1000, 500));
 743   std::vector<DisplayMode> display_modes;
 744   display_modes.push_back(
 745       DisplayMode(gfx::Size(1000, 500), 58.0f, false, true));
 746   display_modes.push_back(
 747       DisplayMode(gfx::Size(800, 300), 59.0f, false, false));
 748   display_modes.push_back(
 749       DisplayMode(gfx::Size(400, 500), 60.0f, false, false));
 750
 751   native_display_info.SetDisplayModes(display_modes);
 752
 753   std::vector<DisplayInfo> display_info_list;
 754   display_info_list.push_back(native_display_info);
 755   display_manager()->OnNativeDisplaysChanged(display_info_list);
 756
 757   DisplayMode mode;
 758   DisplayMode expected_mode;
 759   expected_mode.size = gfx::Size(1000, 500);
 760   EXPECT_FALSE(
 761       display_manager()->GetSelectedModeForDisplayId(display_id, &mode));
 762   EXPECT_TRUE(expected_mode.IsEquivalent(
 763       display_manager()->GetActiveModeForDisplayId(display_id)));
 764
 765   // Unsupported resolution.
 766   display_manager()->SetDisplayResolution(display_id, gfx::Size(800, 4000));
 767   EXPECT_FALSE(
 768       display_manager()->GetSelectedModeForDisplayId(display_id, &mode));
 769   EXPECT_TRUE(expected_mode.IsEquivalent(
 770       display_manager()->GetActiveModeForDisplayId(display_id)));
 771
 772   // Supported resolution.
 773   display_manager()->SetDisplayResolution(display_id, gfx::Size(800, 300));
 774   EXPECT_TRUE(
 775       display_manager()->GetSelectedModeForDisplayId(display_id, &mode));
 776   EXPECT_EQ("800x300", mode.size.ToString());
 777   EXPECT_EQ(59.0f, mode.refresh_rate);
 778   EXPECT_FALSE(mode.native);
 779   expected_mode.size = gfx::Size(800, 300);
 780   EXPECT_TRUE(expected_mode.IsEquivalent(
 781       display_manager()->GetActiveModeForDisplayId(display_id)));
 782
 783   // Best resolution.
 784   display_manager()->SetDisplayResolution(display_id, gfx::Size(1000, 500));
 785   EXPECT_TRUE(
 786       display_manager()->GetSelectedModeForDisplayId(display_id, &mode));
 787   EXPECT_EQ("1000x500", mode.size.ToString());
 788   EXPECT_EQ(58.0f, mode.refresh_rate);
 789   EXPECT_TRUE(mode.native);
 790   expected_mode.size = gfx::Size(1000, 500);
 791   EXPECT_TRUE(expected_mode.IsEquivalent(
 792       display_manager()->GetActiveModeForDisplayId(display_id)));
 793 }
 794
 795 TEST_F(DisplayManagerTest, ResolutionFallback) {
 796   int display_id = 1000;
 797   DisplayInfo native_display_info =
 798       CreateDisplayInfo(display_id, gfx::Rect(0, 0, 1000, 500));
 799   std::vector<DisplayMode> display_modes;
 800   display_modes.push_back(
 801       DisplayMode(gfx::Size(1000, 500), 58.0f, false, true));
 802   display_modes.push_back(
 803       DisplayMode(gfx::Size(800, 300), 59.0f, false, false));
 804   display_modes.push_back(
 805       DisplayMode(gfx::Size(400, 500), 60.0f, false, false));
 806
 807   std::vector<DisplayMode> copy = display_modes;
 808   native_display_info.SetDisplayModes(copy);
 809
 810   std::vector<DisplayInfo> display_info_list;
 811   display_info_list.push_back(native_display_info);
 812   display_manager()->OnNativeDisplaysChanged(display_info_list);
 813   {
 814     display_manager()->SetDisplayResolution(display_id, gfx::Size(800, 300));
 815     DisplayInfo new_native_display_info =
 816         CreateDisplayInfo(display_id, gfx::Rect(0, 0, 400, 500));
 817     copy = display_modes;
 818     new_native_display_info.SetDisplayModes(copy);
 819     std::vector<DisplayInfo> new_display_info_list;
 820     new_display_info_list.push_back(new_native_display_info);
 821     display_manager()->OnNativeDisplaysChanged(new_display_info_list);
 822
 823     DisplayMode mode;
 824     EXPECT_TRUE(
 825         display_manager()->GetSelectedModeForDisplayId(display_id, &mode));
 826     EXPECT_EQ("400x500", mode.size.ToString());
 827     EXPECT_EQ(60.0f, mode.refresh_rate);
 828     EXPECT_FALSE(mode.native);
 829   }
 830   {
 831     // Best resolution should find itself on the resolutions list.
 832     display_manager()->SetDisplayResolution(display_id, gfx::Size(800, 300));
 833     DisplayInfo new_native_display_info =
 834         CreateDisplayInfo(display_id, gfx::Rect(0, 0, 1000, 500));
 835     std::vector<DisplayMode> copy = display_modes;
 836     new_native_display_info.SetDisplayModes(copy);
 837     std::vector<DisplayInfo> new_display_info_list;
 838     new_display_info_list.push_back(new_native_display_info);
 839     display_manager()->OnNativeDisplaysChanged(new_display_info_list);
 840
 841     DisplayMode mode;
 842     EXPECT_TRUE(
 843         display_manager()->GetSelectedModeForDisplayId(display_id, &mode));
 844     EXPECT_EQ("1000x500", mode.size.ToString());
 845     EXPECT_EQ(58.0f, mode.refresh_rate);
 846     EXPECT_TRUE(mode.native);
 847   }
 848 }
 849
 850 TEST_F(DisplayManagerTest, Rotate) {
 851   if (!SupportsMultipleDisplays())
 852     return;
 853
 854   UpdateDisplay("100x200/r,300x400/l");
 855   EXPECT_EQ("1,1 100x200",
 856             GetDisplayInfoAt(0).bounds_in_native().ToString());
 857   EXPECT_EQ("200x100",
 858             GetDisplayInfoAt(0).size_in_pixel().ToString());
 859
 860   EXPECT_EQ("1,201 300x400",
 861             GetDisplayInfoAt(1).bounds_in_native().ToString());
 862   EXPECT_EQ("400x300",
 863             GetDisplayInfoAt(1).size_in_pixel().ToString());
 864   reset();
 865   UpdateDisplay("100x200/b,300x400");
 866   EXPECT_EQ("2 0 0", GetCountSummary());
 867   reset();
 868
 869   EXPECT_EQ("1,1 100x200",
 870             GetDisplayInfoAt(0).bounds_in_native().ToString());
 871   EXPECT_EQ("100x200",
 872             GetDisplayInfoAt(0).size_in_pixel().ToString());
 873
 874   EXPECT_EQ("1,201 300x400",
 875             GetDisplayInfoAt(1).bounds_in_native().ToString());
 876   EXPECT_EQ("300x400",
 877             GetDisplayInfoAt(1).size_in_pixel().ToString());
 878
 879   // Just Rotating display will change the bounds on both display.
 880   UpdateDisplay("100x200/l,300x400");
 881   EXPECT_EQ("2 0 0", GetCountSummary());
 882   reset();
 883
 884   // Updating to the same configuration should report no changes.
 885   UpdateDisplay("100x200/l,300x400");
 886   EXPECT_EQ("0 0 0", GetCountSummary());
 887   reset();
 888
 889   // Rotating 180 degrees should report one change.
 890   UpdateDisplay("100x200/r,300x400");
 891   EXPECT_EQ("1 0 0", GetCountSummary());
 892   reset();
 893
 894   UpdateDisplay("200x200");
 895   EXPECT_EQ("1 0 1", GetCountSummary());
 896   reset();
 897
 898   // Rotating 180 degrees should report one change.
 899   UpdateDisplay("200x200/u");
 900   EXPECT_EQ("1 0 0", GetCountSummary());
 901   reset();
 902
 903   UpdateDisplay("200x200/l");
 904   EXPECT_EQ("1 0 0", GetCountSummary());
 905 }
 906
 907 TEST_F(DisplayManagerTest, UIScale) {
 908   DisplayInfo::SetUse125DSFForUIScaling(false);
 909
 910   UpdateDisplay("1280x800");
 911   int64 display_id = Shell::GetScreen()->GetPrimaryDisplay().id();
 912   display_manager()->SetDisplayUIScale(display_id, 1.125f);
 913   EXPECT_EQ(1.0, GetDisplayInfoAt(0).configured_ui_scale());
 914   display_manager()->SetDisplayUIScale(display_id, 0.8f);
 915   EXPECT_EQ(1.0f, GetDisplayInfoAt(0).configured_ui_scale());
 916   display_manager()->SetDisplayUIScale(display_id, 0.75f);
 917   EXPECT_EQ(1.0f, GetDisplayInfoAt(0).configured_ui_scale());
 918   display_manager()->SetDisplayUIScale(display_id, 0.625f);
 919   EXPECT_EQ(1.0f, GetDisplayInfoAt(0).configured_ui_scale());
 920
 921   test::DisplayManagerTestApi(display_manager())
 922       .SetInternalDisplayId(display_id);
 923
 924   display_manager()->SetDisplayUIScale(display_id, 1.5f);
 925   EXPECT_EQ(1.0f, GetDisplayInfoAt(0).configured_ui_scale());
 926   display_manager()->SetDisplayUIScale(display_id, 1.25f);
 927   EXPECT_EQ(1.0f, GetDisplayInfoAt(0).configured_ui_scale());
 928   display_manager()->SetDisplayUIScale(display_id, 1.125f);
 929   EXPECT_EQ(1.125f, GetDisplayInfoAt(0).configured_ui_scale());
 930   display_manager()->SetDisplayUIScale(display_id, 0.8f);
 931   EXPECT_EQ(0.8f, GetDisplayInfoAt(0).configured_ui_scale());
 932   display_manager()->SetDisplayUIScale(display_id, 0.75f);
 933   EXPECT_EQ(0.8f, GetDisplayInfoAt(0).configured_ui_scale());
 934   display_manager()->SetDisplayUIScale(display_id, 0.625f);
 935   EXPECT_EQ(0.625f, GetDisplayInfoAt(0).configured_ui_scale());
 936   display_manager()->SetDisplayUIScale(display_id, 0.6f);
 937   EXPECT_EQ(0.625f, GetDisplayInfoAt(0).configured_ui_scale());
 938   display_manager()->SetDisplayUIScale(display_id, 0.5f);
 939   EXPECT_EQ(0.5f, GetDisplayInfoAt(0).configured_ui_scale());
 940
 941   UpdateDisplay("1366x768");
 942   display_manager()->SetDisplayUIScale(display_id, 1.5f);
 943   EXPECT_EQ(1.0f, GetDisplayInfoAt(0).configured_ui_scale());
 944   display_manager()->SetDisplayUIScale(display_id, 1.25f);
 945   EXPECT_EQ(1.0f, GetDisplayInfoAt(0).configured_ui_scale());
 946   display_manager()->SetDisplayUIScale(display_id, 1.125f);
 947   EXPECT_EQ(1.125f, GetDisplayInfoAt(0).configured_ui_scale());
 948   display_manager()->SetDisplayUIScale(display_id, 0.8f);
 949   EXPECT_EQ(1.125f, GetDisplayInfoAt(0).configured_ui_scale());
 950   display_manager()->SetDisplayUIScale(display_id, 0.75f);
 951   EXPECT_EQ(0.75f, GetDisplayInfoAt(0).configured_ui_scale());
 952   display_manager()->SetDisplayUIScale(display_id, 0.6f);
 953   EXPECT_EQ(0.6f, GetDisplayInfoAt(0).configured_ui_scale());
 954   display_manager()->SetDisplayUIScale(display_id, 0.625f);
 955   EXPECT_EQ(0.6f, GetDisplayInfoAt(0).configured_ui_scale());
 956   display_manager()->SetDisplayUIScale(display_id, 0.5f);
 957   EXPECT_EQ(0.5f, GetDisplayInfoAt(0).configured_ui_scale());
 958
 959   UpdateDisplay("1280x850*2");
 960   EXPECT_EQ(1.0f, GetDisplayInfoAt(0).configured_ui_scale());
 961   display_manager()->SetDisplayUIScale(display_id, 1.5f);
 962   EXPECT_EQ(1.5f, GetDisplayInfoAt(0).configured_ui_scale());
 963   display_manager()->SetDisplayUIScale(display_id, 1.25f);
 964   EXPECT_EQ(1.25f, GetDisplayInfoAt(0).configured_ui_scale());
 965   display_manager()->SetDisplayUIScale(display_id, 1.125f);
 966   EXPECT_EQ(1.125f, GetDisplayInfoAt(0).configured_ui_scale());
 967   display_manager()->SetDisplayUIScale(display_id, 1.0f);
 968   EXPECT_EQ(1.0f, GetDisplayInfoAt(0).configured_ui_scale());
 969   gfx::Display display = Shell::GetScreen()->GetPrimaryDisplay();
 970   EXPECT_EQ(2.0f, display.device_scale_factor());
 971   EXPECT_EQ("640x425", display.bounds().size().ToString());
 972
 973   display_manager()->SetDisplayUIScale(display_id, 0.8f);
 974   EXPECT_EQ(0.8f, GetDisplayInfoAt(0).configured_ui_scale());
 975   display_manager()->SetDisplayUIScale(display_id, 0.75f);
 976   EXPECT_EQ(0.8f, GetDisplayInfoAt(0).configured_ui_scale());
 977   display_manager()->SetDisplayUIScale(display_id, 0.625f);
 978   EXPECT_EQ(0.625f, GetDisplayInfoAt(0).configured_ui_scale());
 979   display_manager()->SetDisplayUIScale(display_id, 0.6f);
 980   EXPECT_EQ(0.625f, GetDisplayInfoAt(0).configured_ui_scale());
 981   display_manager()->SetDisplayUIScale(display_id, 0.5f);
 982   EXPECT_EQ(0.5f, GetDisplayInfoAt(0).configured_ui_scale());
 983
 984   display_manager()->SetDisplayUIScale(display_id, 2.0f);
 985   EXPECT_EQ(2.0f, GetDisplayInfoAt(0).configured_ui_scale());
 986   EXPECT_EQ(1.0f, GetDisplayInfoAt(0).GetEffectiveUIScale());
 987   display = Shell::GetScreen()->GetPrimaryDisplay();
 988   EXPECT_EQ(1.0f, display.device_scale_factor());
 989   EXPECT_EQ("1280x850", display.bounds().size().ToString());
 990
 991   // 1.25 ui scaling on 1.25 DSF device should use 1.0 DSF
 992   // on screen.
 993   UpdateDisplay("1280x850*1.25");
 994   display_manager()->SetDisplayUIScale(display_id, 1.25f);
 995   EXPECT_EQ(1.25f, GetDisplayInfoAt(0).configured_ui_scale());
 996   EXPECT_EQ(1.0f, GetDisplayInfoAt(0).GetEffectiveUIScale());
 997   display = Shell::GetScreen()->GetPrimaryDisplay();
 998   EXPECT_EQ(1.0f, display.device_scale_factor());
 999   EXPECT_EQ("1280x850", display.bounds().size().ToString());
1000 }
1001
1002 TEST_F(DisplayManagerTest, UIScaleWithDisplayMode) {
1003   int display_id = 1000;
1004
1005   // Setup the display modes with UI-scale.
1006   DisplayInfo native_display_info =
1007       CreateDisplayInfo(display_id, gfx::Rect(0, 0, 1280, 800));
1008   std::vector<DisplayMode> display_modes;
1009   const DisplayMode base_mode(gfx::Size(1280, 800), 60.0f, false, false);
1010   std::vector<DisplayMode> mode_list = CreateInternalDisplayModeList(base_mode);
1011   native_display_info.SetDisplayModes(mode_list);
1012
1013   std::vector<DisplayInfo> display_info_list;
1014   display_info_list.push_back(native_display_info);
1015   display_manager()->OnNativeDisplaysChanged(display_info_list);
1016
1017   DisplayMode expected_mode = base_mode;
1018   EXPECT_TRUE(expected_mode.IsEquivalent(
1019       display_manager()->GetActiveModeForDisplayId(display_id)));
1020
1021   display_manager()->SetDisplayUIScale(display_id, 1.125f);
1022   EXPECT_EQ(1.0, GetDisplayInfoAt(0).configured_ui_scale());
1023   EXPECT_TRUE(expected_mode.IsEquivalent(
1024       display_manager()->GetActiveModeForDisplayId(display_id)));
1025   display_manager()->SetDisplayUIScale(display_id, 0.8f);
1026   EXPECT_EQ(1.0f, GetDisplayInfoAt(0).configured_ui_scale());
1027   EXPECT_TRUE(expected_mode.IsEquivalent(
1028       display_manager()->GetActiveModeForDisplayId(display_id)));
1029   display_manager()->SetDisplayUIScale(display_id, 0.75f);
1030   EXPECT_EQ(1.0f, GetDisplayInfoAt(0).configured_ui_scale());
1031   EXPECT_TRUE(expected_mode.IsEquivalent(
1032       display_manager()->GetActiveModeForDisplayId(display_id)));
1033   display_manager()->SetDisplayUIScale(display_id, 0.625f);
1034   EXPECT_EQ(1.0f, GetDisplayInfoAt(0).configured_ui_scale());
1035   EXPECT_TRUE(expected_mode.IsEquivalent(
1036       display_manager()->GetActiveModeForDisplayId(display_id)));
1037
1038   test::DisplayManagerTestApi(display_manager())
1039       .SetInternalDisplayId(display_id);
1040
1041   display_manager()->SetDisplayUIScale(display_id, 1.5f);
1042   EXPECT_EQ(1.0f, GetDisplayInfoAt(0).configured_ui_scale());
1043   EXPECT_TRUE(expected_mode.IsEquivalent(
1044       display_manager()->GetActiveModeForDisplayId(display_id)));
1045   display_manager()->SetDisplayUIScale(display_id, 1.25f);
1046   EXPECT_EQ(1.0f, GetDisplayInfoAt(0).configured_ui_scale());
1047   EXPECT_TRUE(expected_mode.IsEquivalent(
1048       display_manager()->GetActiveModeForDisplayId(display_id)));
1049   display_manager()->SetDisplayUIScale(display_id, 1.125f);
1050   EXPECT_EQ(1.125f, GetDisplayInfoAt(0).configured_ui_scale());
1051   expected_mode.ui_scale = 1.125f;
1052   EXPECT_TRUE(expected_mode.IsEquivalent(
1053       display_manager()->GetActiveModeForDisplayId(display_id)));
1054   display_manager()->SetDisplayUIScale(display_id, 0.8f);
1055   EXPECT_EQ(0.8f, GetDisplayInfoAt(0).configured_ui_scale());
1056   expected_mode.ui_scale = 0.8f;
1057   EXPECT_TRUE(expected_mode.IsEquivalent(
1058       display_manager()->GetActiveModeForDisplayId(display_id)));
1059   display_manager()->SetDisplayUIScale(display_id, 0.75f);
1060   EXPECT_EQ(0.8f, GetDisplayInfoAt(0).configured_ui_scale());
1061   EXPECT_TRUE(expected_mode.IsEquivalent(
1062       display_manager()->GetActiveModeForDisplayId(display_id)));
1063   display_manager()->SetDisplayUIScale(display_id, 0.625f);
1064   EXPECT_EQ(0.625f, GetDisplayInfoAt(0).configured_ui_scale());
1065   expected_mode.ui_scale = 0.625f;
1066   EXPECT_TRUE(expected_mode.IsEquivalent(
1067       display_manager()->GetActiveModeForDisplayId(display_id)));
1068   display_manager()->SetDisplayUIScale(display_id, 0.6f);
1069   EXPECT_EQ(0.625f, GetDisplayInfoAt(0).configured_ui_scale());
1070   EXPECT_TRUE(expected_mode.IsEquivalent(
1071       display_manager()->GetActiveModeForDisplayId(display_id)));
1072   display_manager()->SetDisplayUIScale(display_id, 0.5f);
1073   EXPECT_EQ(0.5f, GetDisplayInfoAt(0).configured_ui_scale());
1074   expected_mode.ui_scale = 0.5f;
1075   EXPECT_TRUE(expected_mode.IsEquivalent(
1076       display_manager()->GetActiveModeForDisplayId(display_id)));
1077 }
1078
1079 TEST_F(DisplayManagerTest, Use125DSFRorUIScaling) {
1080   DisplayInfo::SetUse125DSFForUIScaling(true);
1081
1082   int64 display_id = Shell::GetScreen()->GetPrimaryDisplay().id();
1083   test::DisplayManagerTestApi(display_manager())
1084       .SetInternalDisplayId(display_id);
1085
1086   UpdateDisplay("1920x1080*1.25");
1087   EXPECT_EQ(1.0f, GetDisplayInfoAt(0).GetEffectiveDeviceScaleFactor());
1088   EXPECT_EQ(1.0f, GetDisplayInfoAt(0).GetEffectiveUIScale());
1089
1090   display_manager()->SetDisplayUIScale(display_id, 0.8f);
1091   EXPECT_EQ(1.25f, GetDisplayInfoAt(0).GetEffectiveDeviceScaleFactor());
1092   EXPECT_EQ(1.0f, GetDisplayInfoAt(0).GetEffectiveUIScale());
1093   EXPECT_EQ("1536x864", GetDisplayForId(display_id).size().ToString());
1094
1095   display_manager()->SetDisplayUIScale(display_id, 0.5f);
1096   EXPECT_EQ(1.0f, GetDisplayInfoAt(0).GetEffectiveDeviceScaleFactor());
1097   EXPECT_EQ(0.5f, GetDisplayInfoAt(0).GetEffectiveUIScale());
1098   EXPECT_EQ("960x540", GetDisplayForId(display_id).size().ToString());
1099
1100   display_manager()->SetDisplayUIScale(display_id, 1.25f);
1101   EXPECT_EQ(1.0f, GetDisplayInfoAt(0).GetEffectiveDeviceScaleFactor());
1102   EXPECT_EQ(1.25f, GetDisplayInfoAt(0).GetEffectiveUIScale());
1103   EXPECT_EQ("2400x1350", GetDisplayForId(display_id).size().ToString());
1104
1105   DisplayInfo::SetUse125DSFForUIScaling(false);
1106 }
1107
1108 #if defined(OS_WIN)
1109 // TODO(scottmg): RootWindow doesn't get resized on Windows
1110 // Ash. http://crbug.com/247916.
1111 #define MAYBE_UpdateMouseCursorAfterRotateZoom DISABLED_UpdateMouseCursorAfterRotateZoom
1112 #else
1113 #define MAYBE_UpdateMouseCursorAfterRotateZoom UpdateMouseCursorAfterRotateZoom
1114 #endif
1115
1116 TEST_F(DisplayManagerTest, MAYBE_UpdateMouseCursorAfterRotateZoom) {
1117   // Make sure just rotating will not change native location.
1118   UpdateDisplay("300x200,200x150");
1119   aura::Window::Windows root_windows = Shell::GetAllRootWindows();
1120   aura::Env* env = aura::Env::GetInstance();
1121
1122   ui::test::EventGenerator generator1(root_windows[0]);
1123   ui::test::EventGenerator generator2(root_windows[1]);
1124
1125   // Test on 1st display.
1126   generator1.MoveMouseToInHost(150, 50);
1127   EXPECT_EQ("150,50", env->last_mouse_location().ToString());
1128   UpdateDisplay("300x200/r,200x150");
1129   EXPECT_EQ("50,149", env->last_mouse_location().ToString());
1130
1131   // Test on 2nd display.
1132   generator2.MoveMouseToInHost(50, 100);
1133   EXPECT_EQ("250,100", env->last_mouse_location().ToString());
1134   UpdateDisplay("300x200/r,200x150/l");
1135   EXPECT_EQ("249,50", env->last_mouse_location().ToString());
1136
1137   // The native location is now outside, so move to the center
1138   // of closest display.
1139   UpdateDisplay("300x200/r,100x50/l");
1140   EXPECT_EQ("225,50", env->last_mouse_location().ToString());
1141
1142   // Make sure just zooming will not change native location.
1143   UpdateDisplay("600x400*2,400x300");
1144
1145   // Test on 1st display.
1146   generator1.MoveMouseToInHost(200, 300);
1147   EXPECT_EQ("100,150", env->last_mouse_location().ToString());
1148   UpdateDisplay("600x400*2@1.5,400x300");
1149   EXPECT_EQ("150,225", env->last_mouse_location().ToString());
1150
1151   // Test on 2nd display.
1152   UpdateDisplay("600x400,400x300*2");
1153   generator2.MoveMouseToInHost(200, 250);
1154   EXPECT_EQ("700,125", env->last_mouse_location().ToString());
1155   UpdateDisplay("600x400,400x300*2@1.5");
1156   EXPECT_EQ("750,187", env->last_mouse_location().ToString());
1157
1158   // The native location is now outside, so move to the
1159   // center of closest display.
1160   UpdateDisplay("600x400,400x200*2@1.5");
1161   EXPECT_EQ("750,75", env->last_mouse_location().ToString());
1162 }
1163
1164 class TestDisplayObserver : public gfx::DisplayObserver {
1165  public:
1166   TestDisplayObserver() : changed_(false) {}
1167   ~TestDisplayObserver() override {}
1168
1169   // gfx::DisplayObserver overrides:
1170   void OnDisplayMetricsChanged(const gfx::Display&, uint32_t) override {}
1171   void OnDisplayAdded(const gfx::Display& new_display) override {
1172     // Mirror window should already be delete before restoring
1173     // the external display.
1174     EXPECT_FALSE(test_api.GetHost());
1175     changed_ = true;
1176   }
1177   void OnDisplayRemoved(const gfx::Display& old_display) override {
1178     // Mirror window should not be created until the external display
1179     // is removed.
1180     EXPECT_FALSE(test_api.GetHost());
1181     changed_ = true;
1182   }
1183
1184   bool changed_and_reset() {
1185     bool changed = changed_;
1186     changed_ = false;
1187     return changed;
1188   }
1189
1190  private:
1191   test::MirrorWindowTestApi test_api;
1192   bool changed_;
1193
1194   DISALLOW_COPY_AND_ASSIGN(TestDisplayObserver);
1195 };
1196
1197 TEST_F(DisplayManagerTest, SoftwareMirroring) {
1198   if (!SupportsMultipleDisplays())
1199     return;
1200
1201   UpdateDisplay("300x400,400x500");
1202
1203   test::MirrorWindowTestApi test_api;
1204   EXPECT_EQ(NULL, test_api.GetHost());
1205
1206   TestDisplayObserver display_observer;
1207   Shell::GetScreen()->AddObserver(&display_observer);
1208
1209   DisplayManager* display_manager = Shell::GetInstance()->display_manager();
1210   display_manager->SetSecondDisplayMode(DisplayManager::MIRRORING);
1211   display_manager->UpdateDisplays();
1212   RunAllPendingInMessageLoop();
1213   EXPECT_TRUE(display_observer.changed_and_reset());
1214   EXPECT_EQ(1U, display_manager->GetNumDisplays());
1215   EXPECT_EQ("0,0 300x400",
1216             Shell::GetScreen()->GetPrimaryDisplay().bounds().ToString());
1217   EXPECT_EQ("400x500", test_api.GetHost()->GetBounds().size().ToString());
1218   EXPECT_EQ("300x400",
1219             test_api.GetHost()->window()->bounds().size().ToString());
1220   EXPECT_TRUE(display_manager->IsMirrored());
1221
1222   display_manager->SetMirrorMode(false);
1223   EXPECT_TRUE(display_observer.changed_and_reset());
1224   EXPECT_EQ(NULL, test_api.GetHost());
1225   EXPECT_EQ(2U, display_manager->GetNumDisplays());
1226   EXPECT_FALSE(display_manager->IsMirrored());
1227
1228   // Make sure the mirror window has the pixel size of the
1229   // source display.
1230   display_manager->SetMirrorMode(true);
1231   EXPECT_TRUE(display_observer.changed_and_reset());
1232
1233   UpdateDisplay("300x400@0.5,400x500");
1234   EXPECT_FALSE(display_observer.changed_and_reset());
1235   EXPECT_EQ("300x400",
1236             test_api.GetHost()->window()->bounds().size().ToString());
1237
1238   UpdateDisplay("310x410*2,400x500");
1239   EXPECT_FALSE(display_observer.changed_and_reset());
1240   EXPECT_EQ("310x410",
1241             test_api.GetHost()->window()->bounds().size().ToString());
1242
1243   UpdateDisplay("320x420/r,400x500");
1244   EXPECT_FALSE(display_observer.changed_and_reset());
1245   EXPECT_EQ("320x420",
1246             test_api.GetHost()->window()->bounds().size().ToString());
1247
1248   UpdateDisplay("330x440/r,400x500");
1249   EXPECT_FALSE(display_observer.changed_and_reset());
1250   EXPECT_EQ("330x440",
1251             test_api.GetHost()->window()->bounds().size().ToString());
1252
1253   // Overscan insets are ignored.
1254   UpdateDisplay("400x600/o,600x800/o");
1255   EXPECT_FALSE(display_observer.changed_and_reset());
1256   EXPECT_EQ("400x600",
1257             test_api.GetHost()->window()->bounds().size().ToString());
1258
1259   Shell::GetScreen()->RemoveObserver(&display_observer);
1260 }
1261
1262 TEST_F(DisplayManagerTest, SingleDisplayToSoftwareMirroring) {
1263   if (!SupportsMultipleDisplays())
1264     return;
1265   UpdateDisplay("600x400");
1266
1267   DisplayManager* display_manager = Shell::GetInstance()->display_manager();
1268   display_manager->SetSecondDisplayMode(DisplayManager::MIRRORING);
1269   UpdateDisplay("600x400,600x400");
1270
1271   EXPECT_TRUE(display_manager->IsMirrored());
1272   EXPECT_EQ(1U, display_manager->GetNumDisplays());
1273   DisplayController* display_controller =
1274       ash::Shell::GetInstance()->display_controller();
1275   EXPECT_TRUE(display_controller->mirror_window_controller()->GetWindow());
1276
1277   UpdateDisplay("600x400");
1278   EXPECT_FALSE(display_manager->IsMirrored());
1279   EXPECT_EQ(1U, display_manager->GetNumDisplays());
1280   EXPECT_FALSE(display_controller->mirror_window_controller()->GetWindow());
1281 }
1282
1283 #if defined(OS_CHROMEOS)
1284 // Make sure this does not cause any crashes. See http://crbug.com/412910
1285 // This test is limited to OS_CHROMEOS because CursorCompositingEnabled is only
1286 // for ChromeOS.
1287 TEST_F(DisplayManagerTest, SoftwareMirroringWithCompositingCursor) {
1288   if (!SupportsMultipleDisplays())
1289     return;
1290
1291   UpdateDisplay("300x400,400x500");
1292
1293   test::MirrorWindowTestApi test_api;
1294   EXPECT_EQ(NULL, test_api.GetHost());
1295
1296   DisplayManager* display_manager = Shell::GetInstance()->display_manager();
1297   DisplayInfo secondary_info = display_manager->GetDisplayInfo(
1298       ScreenUtil::GetSecondaryDisplay().id());
1299
1300   display_manager->SetSoftwareMirroring(true);
1301   display_manager->UpdateDisplays();
1302
1303   aura::Window::Windows root_windows = Shell::GetAllRootWindows();
1304   EXPECT_FALSE(root_windows[0]->Contains(test_api.GetCursorWindow()));
1305
1306   Shell::GetInstance()->SetCursorCompositingEnabled(true);
1307
1308   EXPECT_TRUE(root_windows[0]->Contains(test_api.GetCursorWindow()));
1309
1310   // Removes the first display and keeps the second one.
1311   display_manager->SetSoftwareMirroring(false);
1312   std::vector<DisplayInfo> new_info_list;
1313   new_info_list.push_back(secondary_info);
1314   display_manager->OnNativeDisplaysChanged(new_info_list);
1315
1316   root_windows = Shell::GetAllRootWindows();
1317   EXPECT_TRUE(root_windows[0]->Contains(test_api.GetCursorWindow()));
1318
1319   Shell::GetInstance()->SetCursorCompositingEnabled(false);
1320 }
1321 #endif  // OS_CHROMEOS
1322
1323 TEST_F(DisplayManagerTest, MirroredLayout) {
1324   if (!SupportsMultipleDisplays())
1325     return;
1326
1327   DisplayManager* display_manager = Shell::GetInstance()->display_manager();
1328   UpdateDisplay("500x500,400x400");
1329   EXPECT_FALSE(display_manager->GetCurrentDisplayLayout().mirrored);
1330   EXPECT_EQ(2, Shell::GetScreen()->GetNumDisplays());
1331   EXPECT_EQ(2U, display_manager->num_connected_displays());
1332
1333   UpdateDisplay("1+0-500x500,1+0-500x500");
1334   EXPECT_TRUE(display_manager->GetCurrentDisplayLayout().mirrored);
1335   EXPECT_EQ(1, Shell::GetScreen()->GetNumDisplays());
1336   EXPECT_EQ(2U, display_manager->num_connected_displays());
1337
1338   UpdateDisplay("500x500,500x500");
1339   EXPECT_FALSE(display_manager->GetCurrentDisplayLayout().mirrored);
1340   EXPECT_EQ(2, Shell::GetScreen()->GetNumDisplays());
1341   EXPECT_EQ(2U, display_manager->num_connected_displays());
1342 }
1343
1344 TEST_F(DisplayManagerTest, InvertLayout) {
1345   EXPECT_EQ("left, 0",
1346             DisplayLayout(DisplayLayout::RIGHT, 0).Invert().ToString());
1347   EXPECT_EQ("left, -100",
1348             DisplayLayout(DisplayLayout::RIGHT, 100).Invert().ToString());
1349   EXPECT_EQ("left, 50",
1350             DisplayLayout(DisplayLayout::RIGHT, -50).Invert().ToString());
1351
1352   EXPECT_EQ("right, 0",
1353             DisplayLayout(DisplayLayout::LEFT, 0).Invert().ToString());
1354   EXPECT_EQ("right, -90",
1355             DisplayLayout(DisplayLayout::LEFT, 90).Invert().ToString());
1356   EXPECT_EQ("right, 60",
1357             DisplayLayout(DisplayLayout::LEFT, -60).Invert().ToString());
1358
1359   EXPECT_EQ("bottom, 0",
1360             DisplayLayout(DisplayLayout::TOP, 0).Invert().ToString());
1361   EXPECT_EQ("bottom, -80",
1362             DisplayLayout(DisplayLayout::TOP, 80).Invert().ToString());
1363   EXPECT_EQ("bottom, 70",
1364             DisplayLayout(DisplayLayout::TOP, -70).Invert().ToString());
1365
1366   EXPECT_EQ("top, 0",
1367             DisplayLayout(DisplayLayout::BOTTOM, 0).Invert().ToString());
1368   EXPECT_EQ("top, -70",
1369             DisplayLayout(DisplayLayout::BOTTOM, 70).Invert().ToString());
1370   EXPECT_EQ("top, 80",
1371             DisplayLayout(DisplayLayout::BOTTOM, -80).Invert().ToString());
1372 }
1373
1374 TEST_F(DisplayManagerTest, NotifyPrimaryChange) {
1375   if (!SupportsMultipleDisplays())
1376     return;
1377   UpdateDisplay("500x500,500x500");
1378   ash::Shell::GetInstance()->display_controller()->SwapPrimaryDisplay();
1379   reset();
1380   UpdateDisplay("500x500");
1381   EXPECT_FALSE(changed_metrics() & gfx::DisplayObserver::DISPLAY_METRIC_BOUNDS);
1382   EXPECT_FALSE(changed_metrics() &
1383                gfx::DisplayObserver::DISPLAY_METRIC_WORK_AREA);
1384   EXPECT_TRUE(changed_metrics() &
1385               gfx::DisplayObserver::DISPLAY_METRIC_PRIMARY);
1386
1387   UpdateDisplay("500x500,500x500");
1388   ash::Shell::GetInstance()->display_controller()->SwapPrimaryDisplay();
1389   reset();
1390   UpdateDisplay("500x400");
1391   EXPECT_TRUE(changed_metrics() & gfx::DisplayObserver::DISPLAY_METRIC_BOUNDS);
1392   EXPECT_TRUE(changed_metrics() &
1393               gfx::DisplayObserver::DISPLAY_METRIC_WORK_AREA);
1394   EXPECT_TRUE(changed_metrics() &
1395               gfx::DisplayObserver::DISPLAY_METRIC_PRIMARY);
1396 }
1397
1398 TEST_F(DisplayManagerTest, NotifyPrimaryChangeUndock) {
1399   if (!SupportsMultipleDisplays())
1400     return;
1401   // Assume the default display is an external display, and
1402   // emulates undocking by switching to another display.
1403   DisplayInfo another_display_info =
1404       CreateDisplayInfo(1, gfx::Rect(0, 0, 1280, 800));
1405   std::vector<DisplayInfo> info_list;
1406   info_list.push_back(another_display_info);
1407   reset();
1408   display_manager()->OnNativeDisplaysChanged(info_list);
1409   EXPECT_TRUE(changed_metrics() & gfx::DisplayObserver::DISPLAY_METRIC_BOUNDS);
1410   EXPECT_TRUE(changed_metrics() &
1411               gfx::DisplayObserver::DISPLAY_METRIC_WORK_AREA);
1412   EXPECT_TRUE(changed_metrics() &
1413               gfx::DisplayObserver::DISPLAY_METRIC_PRIMARY);
1414 }
1415
1416 #if defined(OS_WIN)
1417 // TODO(scottmg): RootWindow doesn't get resized on Windows
1418 // Ash. http://crbug.com/247916.
1419 #define MAYBE_UpdateDisplayWithHostOrigin DISABLED_UpdateDisplayWithHostOrigin
1420 #else
1421 #define MAYBE_UpdateDisplayWithHostOrigin UpdateDisplayWithHostOrigin
1422 #endif
1423
1424 TEST_F(DisplayManagerTest, MAYBE_UpdateDisplayWithHostOrigin) {
1425   UpdateDisplay("100x200,300x400");
1426   ASSERT_EQ(2, Shell::GetScreen()->GetNumDisplays());
1427   aura::Window::Windows root_windows =
1428       Shell::GetInstance()->GetAllRootWindows();
1429   ASSERT_EQ(2U, root_windows.size());
1430   aura::WindowTreeHost* host0 = root_windows[0]->GetHost();
1431   aura::WindowTreeHost* host1 = root_windows[1]->GetHost();
1432
1433   EXPECT_EQ("1,1", host0->GetBounds().origin().ToString());
1434   EXPECT_EQ("100x200", host0->GetBounds().size().ToString());
1435   // UpdateDisplay set the origin if it's not set.
1436   EXPECT_NE("1,1", host1->GetBounds().origin().ToString());
1437   EXPECT_EQ("300x400", host1->GetBounds().size().ToString());
1438
1439   UpdateDisplay("100x200,200+300-300x400");
1440   ASSERT_EQ(2, Shell::GetScreen()->GetNumDisplays());
1441   EXPECT_EQ("0,0", host0->GetBounds().origin().ToString());
1442   EXPECT_EQ("100x200", host0->GetBounds().size().ToString());
1443   EXPECT_EQ("200,300", host1->GetBounds().origin().ToString());
1444   EXPECT_EQ("300x400", host1->GetBounds().size().ToString());
1445
1446   UpdateDisplay("400+500-200x300,300x400");
1447   ASSERT_EQ(2, Shell::GetScreen()->GetNumDisplays());
1448   EXPECT_EQ("400,500", host0->GetBounds().origin().ToString());
1449   EXPECT_EQ("200x300", host0->GetBounds().size().ToString());
1450   EXPECT_EQ("0,0", host1->GetBounds().origin().ToString());
1451   EXPECT_EQ("300x400", host1->GetBounds().size().ToString());
1452
1453   UpdateDisplay("100+200-100x200,300+500-200x300");
1454   ASSERT_EQ(2, Shell::GetScreen()->GetNumDisplays());
1455   EXPECT_EQ("100,200", host0->GetBounds().origin().ToString());
1456   EXPECT_EQ("100x200", host0->GetBounds().size().ToString());
1457   EXPECT_EQ("300,500", host1->GetBounds().origin().ToString());
1458   EXPECT_EQ("200x300", host1->GetBounds().size().ToString());
1459 }
1460
1461 class ScreenShutdownTest : public test::AshTestBase {
1462  public:
1463   ScreenShutdownTest() {
1464   }
1465   ~ScreenShutdownTest() override {}
1466
1467   void TearDown() override {
1468     gfx::Screen* orig_screen =
1469         gfx::Screen::GetScreenByType(gfx::SCREEN_TYPE_ALTERNATE);
1470     AshTestBase::TearDown();
1471     if (!SupportsMultipleDisplays())
1472       return;
1473     gfx::Screen* screen =
1474         gfx::Screen::GetScreenByType(gfx::SCREEN_TYPE_ALTERNATE);
1475     EXPECT_NE(orig_screen, screen);
1476     EXPECT_EQ(2, screen->GetNumDisplays());
1477     EXPECT_EQ("500x300", screen->GetPrimaryDisplay().size().ToString());
1478     std::vector<gfx::Display> all = screen->GetAllDisplays();
1479     EXPECT_EQ("500x300", all[0].size().ToString());
1480     EXPECT_EQ("800x400", all[1].size().ToString());
1481   }
1482
1483  private:
1484   DISALLOW_COPY_AND_ASSIGN(ScreenShutdownTest);
1485 };
1486
1487 TEST_F(ScreenShutdownTest, ScreenAfterShutdown) {
1488   if (!SupportsMultipleDisplays())
1489     return;
1490   UpdateDisplay("500x300,800x400");
1491 }
1492
1493
1494 #if defined(OS_CHROMEOS)
1495 namespace {
1496
1497 // A helper class that sets the display configuration and starts ash.
1498 // This is to make sure the font configuration happens during ash
1499 // initialization process.
1500 class FontTestHelper : public test::AshTestBase {
1501  public:
1502   enum DisplayType {
1503     INTERNAL,
1504     EXTERNAL
1505   };
1506
1507   FontTestHelper(float scale, DisplayType display_type) {
1508     gfx::ClearFontRenderParamsCacheForTest();
1509     base::CommandLine* command_line = base::CommandLine::ForCurrentProcess();
1510     if (display_type == INTERNAL)
1511       command_line->AppendSwitch(switches::kAshUseFirstDisplayAsInternal);
1512     command_line->AppendSwitchASCII(switches::kAshHostWindowBounds,
1513                                     StringPrintf("1000x800*%f", scale));
1514     SetUp();
1515   }
1516
1517   ~FontTestHelper() override { TearDown(); }
1518
1519   // test::AshTestBase:
1520   void TestBody() override { NOTREACHED(); }
1521
1522  private:
1523   DISALLOW_COPY_AND_ASSIGN(FontTestHelper);
1524 };
1525
1526
1527 bool IsTextSubpixelPositioningEnabled() {
1528   gfx::FontRenderParams params =
1529       gfx::GetFontRenderParams(gfx::FontRenderParamsQuery(false), NULL);
1530   return params.subpixel_positioning;
1531 }
1532
1533 gfx::FontRenderParams::Hinting GetFontHintingParams() {
1534   gfx::FontRenderParams params =
1535       gfx::GetFontRenderParams(gfx::FontRenderParamsQuery(false), NULL);
1536   return params.hinting;
1537 }
1538
1539 }  // namespace
1540
1541 typedef testing::Test DisplayManagerFontTest;
1542
1543 TEST_F(DisplayManagerFontTest, TextSubpixelPositioningWithDsf100Internal) {
1544   FontTestHelper helper(1.0f, FontTestHelper::INTERNAL);
1545   ASSERT_DOUBLE_EQ(
1546       1.0f, Shell::GetScreen()->GetPrimaryDisplay().device_scale_factor());
1547   EXPECT_FALSE(IsTextSubpixelPositioningEnabled());
1548   EXPECT_NE(gfx::FontRenderParams::HINTING_NONE, GetFontHintingParams());
1549 }
1550
1551 TEST_F(DisplayManagerFontTest, TextSubpixelPositioningWithDsf125Internal) {
1552   FontTestHelper helper(1.25f, FontTestHelper::INTERNAL);
1553   ASSERT_DOUBLE_EQ(
1554       1.25f, Shell::GetScreen()->GetPrimaryDisplay().device_scale_factor());
1555   EXPECT_TRUE(IsTextSubpixelPositioningEnabled());
1556   EXPECT_EQ(gfx::FontRenderParams::HINTING_NONE, GetFontHintingParams());
1557 }
1558
1559 TEST_F(DisplayManagerFontTest, TextSubpixelPositioningWithDsf200Internal) {
1560   FontTestHelper helper(2.0f, FontTestHelper::INTERNAL);
1561   ASSERT_DOUBLE_EQ(
1562       2.0f, Shell::GetScreen()->GetPrimaryDisplay().device_scale_factor());
1563   EXPECT_TRUE(IsTextSubpixelPositioningEnabled());
1564   EXPECT_EQ(gfx::FontRenderParams::HINTING_NONE, GetFontHintingParams());
1565
1566   Shell::GetInstance()->display_manager()->SetDisplayUIScale(
1567       Shell::GetScreen()->GetPrimaryDisplay().id(), 2.0f);
1568
1569   ASSERT_DOUBLE_EQ(
1570       1.0f, Shell::GetScreen()->GetPrimaryDisplay().device_scale_factor());
1571   EXPECT_FALSE(IsTextSubpixelPositioningEnabled());
1572   EXPECT_NE(gfx::FontRenderParams::HINTING_NONE, GetFontHintingParams());
1573 }
1574
1575 TEST_F(DisplayManagerFontTest, TextSubpixelPositioningWithDsf100External) {
1576   FontTestHelper helper(1.0f, FontTestHelper::EXTERNAL);
1577   ASSERT_DOUBLE_EQ(
1578       1.0f, Shell::GetScreen()->GetPrimaryDisplay().device_scale_factor());
1579   EXPECT_FALSE(IsTextSubpixelPositioningEnabled());
1580   EXPECT_NE(gfx::FontRenderParams::HINTING_NONE, GetFontHintingParams());
1581 }
1582
1583 TEST_F(DisplayManagerFontTest, TextSubpixelPositioningWithDsf125External) {
1584   FontTestHelper helper(1.25f, FontTestHelper::EXTERNAL);
1585   ASSERT_DOUBLE_EQ(
1586       1.25f, Shell::GetScreen()->GetPrimaryDisplay().device_scale_factor());
1587   EXPECT_TRUE(IsTextSubpixelPositioningEnabled());
1588   EXPECT_EQ(gfx::FontRenderParams::HINTING_NONE, GetFontHintingParams());
1589 }
1590
1591 TEST_F(DisplayManagerFontTest, TextSubpixelPositioningWithDsf200External) {
1592   FontTestHelper helper(2.0f, FontTestHelper::EXTERNAL);
1593   ASSERT_DOUBLE_EQ(
1594       2.0f, Shell::GetScreen()->GetPrimaryDisplay().device_scale_factor());
1595   EXPECT_TRUE(IsTextSubpixelPositioningEnabled());
1596   EXPECT_EQ(gfx::FontRenderParams::HINTING_NONE, GetFontHintingParams());
1597 }
1598
1599 TEST_F(DisplayManagerFontTest,
1600        TextSubpixelPositioningWithDsf125InternalWithScaling) {
1601   DisplayInfo::SetUse125DSFForUIScaling(true);
1602   FontTestHelper helper(1.25f, FontTestHelper::INTERNAL);
1603   ASSERT_DOUBLE_EQ(
1604       1.0f, Shell::GetScreen()->GetPrimaryDisplay().device_scale_factor());
1605   EXPECT_FALSE(IsTextSubpixelPositioningEnabled());
1606   EXPECT_NE(gfx::FontRenderParams::HINTING_NONE, GetFontHintingParams());
1607
1608   Shell::GetInstance()->display_manager()->SetDisplayUIScale(
1609       Shell::GetScreen()->GetPrimaryDisplay().id(), 0.8f);
1610
1611   ASSERT_DOUBLE_EQ(
1612       1.25f, Shell::GetScreen()->GetPrimaryDisplay().device_scale_factor());
1613   EXPECT_TRUE(IsTextSubpixelPositioningEnabled());
1614   EXPECT_EQ(gfx::FontRenderParams::HINTING_NONE, GetFontHintingParams());
1615
1616   DisplayInfo::SetUse125DSFForUIScaling(false);
1617 }
1618
1619 #endif  // OS_CHROMEOS
1620
1621 }  // namespace ash