src/ash/magnifier/magnification_controller_unittest.cc

   1 // Copyright (c) 2013 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/magnifier/magnification_controller.h"
   6
   7 #include "ash/shell.h"
   8 #include "ash/test/ash_test_base.h"
   9 #include "base/strings/stringprintf.h"
  10 #include "ui/aura/client/aura_constants.h"
  11 #include "ui/aura/env.h"
  12 #include "ui/aura/test/aura_test_utils.h"
  13 #include "ui/aura/window_tree_host.h"
  14 #include "ui/base/ime/input_method.h"
  15 #include "ui/chromeos/accessibility_types.h"
  16 #include "ui/events/test/event_generator.h"
  17 #include "ui/gfx/rect_conversions.h"
  18 #include "ui/gfx/screen.h"
  19 #include "ui/views/controls/textfield/textfield.h"
  20 #include "ui/views/layout/fill_layout.h"
  21 #include "ui/views/widget/widget.h"
  22 #include "ui/views/widget/widget_delegate.h"
  23 #include "ui/wm/core/coordinate_conversion.h"
  24
  25 namespace ash {
  26 namespace {
  27
  28 const int kRootHeight = 600;
  29 const int kRootWidth = 800;
  30
  31 const int kTextInputWindowWidth = 50;
  32 const int kTextInputWindowHeight = 50;
  33
  34 class TextInputView : public views::WidgetDelegateView {
  35  public:
  36   TextInputView() : text_field_(new views::Textfield) {
  37     text_field_->SetTextInputType(ui::TEXT_INPUT_TYPE_TEXT);
  38     AddChildView(text_field_);
  39     SetLayoutManager(new views::FillLayout);
  40   }
  41
  42   virtual ~TextInputView() {}
  43
  44   virtual gfx::Size GetPreferredSize() const override {
  45     return gfx::Size(kTextInputWindowWidth, kTextInputWindowHeight);
  46   }
  47
  48   // Overridden from views::WidgetDelegate:
  49   virtual views::View* GetContentsView() override { return this; }
  50
  51   void FocusOnTextInput() { GetFocusManager()->SetFocusedView(text_field_); }
  52
  53  private:
  54   views::Textfield* text_field_;  // owned by views hierarchy
  55
  56   DISALLOW_COPY_AND_ASSIGN(TextInputView);
  57 };
  58
  59 }  // namespace
  60
  61 class MagnificationControllerTest: public test::AshTestBase {
  62  public:
  63   MagnificationControllerTest() : text_input_view_(NULL) {}
  64   virtual ~MagnificationControllerTest() {}
  65
  66   virtual void SetUp() override {
  67     AshTestBase::SetUp();
  68     UpdateDisplay(base::StringPrintf("%dx%d", kRootWidth, kRootHeight));
  69
  70     aura::Window* root = GetRootWindow();
  71     gfx::Rect root_bounds(root->bounds());
  72
  73 #if defined(OS_WIN)
  74     // RootWindow and Display can't resize on Windows Ash.
  75     // http://crbug.com/165962
  76     EXPECT_EQ(kRootHeight, root_bounds.height());
  77     EXPECT_EQ(kRootWidth, root_bounds.width());
  78 #endif
  79   }
  80
  81   virtual void TearDown() override {
  82     AshTestBase::TearDown();
  83   }
  84
  85  protected:
  86   aura::Window* GetRootWindow() const {
  87     return Shell::GetPrimaryRootWindow();
  88   }
  89
  90   std::string GetHostMouseLocation() {
  91     const gfx::Point& location =
  92         aura::test::QueryLatestMousePositionRequestInHost(
  93             GetRootWindow()->GetHost());
  94     return location.ToString();
  95   }
  96
  97   ash::MagnificationController* GetMagnificationController() const {
  98     return ash::Shell::GetInstance()->magnification_controller();
  99   }
 100
 101   gfx::Rect GetViewport() const {
 102     gfx::RectF bounds(0, 0, kRootWidth, kRootHeight);
 103     GetRootWindow()->layer()->transform().TransformRectReverse(&bounds);
 104     return gfx::ToEnclosingRect(bounds);
 105   }
 106
 107   std::string CurrentPointOfInterest() const {
 108     return GetMagnificationController()->
 109         GetPointOfInterestForTesting().ToString();
 110   }
 111
 112   void CreateAndShowTextInputView(const gfx::Rect& bounds) {
 113     text_input_view_ = new TextInputView;
 114     views::Widget* widget = views::Widget::CreateWindowWithContextAndBounds(
 115         text_input_view_, GetRootWindow(), bounds);
 116     widget->Show();
 117   }
 118
 119   // Returns the text input view's bounds in root window coordinates.
 120   gfx::Rect GetTextInputViewBounds() {
 121     DCHECK(text_input_view_);
 122     gfx::Rect bounds = text_input_view_->bounds();
 123     gfx::Point origin = bounds.origin();
 124     // Convert origin to screen coordinates.
 125     views::View::ConvertPointToScreen(text_input_view_, &origin);
 126     // Convert origin to root_window_ coordinates.
 127     wm::ConvertPointFromScreen(GetRootWindow(), &origin);
 128     return gfx::Rect(origin.x(), origin.y(), bounds.width(), bounds.height());
 129   }
 130
 131   // Returns the caret bounds in root window coordinates.
 132   gfx::Rect GetCaretBounds() {
 133     gfx::Rect caret_bounds =
 134         GetInputMethod()->GetTextInputClient()->GetCaretBounds();
 135     gfx::Point origin = caret_bounds.origin();
 136     wm::ConvertPointFromScreen(GetRootWindow(), &origin);
 137     return gfx::Rect(
 138         origin.x(), origin.y(), caret_bounds.width(), caret_bounds.height());
 139   }
 140
 141   void FocusOnTextInputView() {
 142     DCHECK(text_input_view_);
 143     text_input_view_->FocusOnTextInput();
 144   }
 145
 146  private:
 147   TextInputView* text_input_view_;
 148
 149   ui::InputMethod* GetInputMethod() {
 150     DCHECK(text_input_view_);
 151     return text_input_view_->GetWidget()
 152         ->GetNativeWindow()
 153         ->GetRootWindow()
 154         ->GetProperty(aura::client::kRootWindowInputMethodKey);
 155   }
 156
 157   DISALLOW_COPY_AND_ASSIGN(MagnificationControllerTest);
 158 };
 159
 160 TEST_F(MagnificationControllerTest, EnableAndDisable) {
 161   // Confirms the magnifier is disabled.
 162   EXPECT_TRUE(GetRootWindow()->layer()->transform().IsIdentity());
 163   EXPECT_EQ(1.0f, GetMagnificationController()->GetScale());
 164   EXPECT_EQ("0,0 800x600", GetViewport().ToString());
 165
 166   // Enables magnifier.
 167   GetMagnificationController()->SetEnabled(true);
 168   EXPECT_FALSE(GetRootWindow()->layer()->transform().IsIdentity());
 169   EXPECT_EQ(2.0f, GetMagnificationController()->GetScale());
 170   EXPECT_EQ("200,150 400x300", GetViewport().ToString());
 171
 172   // Disables magnifier.
 173   GetMagnificationController()->SetEnabled(false);
 174   EXPECT_TRUE(GetRootWindow()->layer()->transform().IsIdentity());
 175   EXPECT_EQ(1.0f, GetMagnificationController()->GetScale());
 176   EXPECT_EQ("0,0 800x600", GetViewport().ToString());
 177
 178   // Confirms the the scale can't be changed.
 179   GetMagnificationController()->SetScale(4.0f, false);
 180   EXPECT_TRUE(GetRootWindow()->layer()->transform().IsIdentity());
 181   EXPECT_EQ(1.0f, GetMagnificationController()->GetScale());
 182   EXPECT_EQ("0,0 800x600", GetViewport().ToString());
 183 }
 184
 185 TEST_F(MagnificationControllerTest, MagnifyAndUnmagnify) {
 186   // Enables magnifier and confirms the default scale is 2.0x.
 187   GetMagnificationController()->SetEnabled(true);
 188   EXPECT_FALSE(GetRootWindow()->layer()->transform().IsIdentity());
 189   EXPECT_EQ(2.0f, GetMagnificationController()->GetScale());
 190   EXPECT_EQ("200,150 400x300", GetViewport().ToString());
 191   EXPECT_EQ("400,300", CurrentPointOfInterest());
 192
 193   // Changes the scale.
 194   GetMagnificationController()->SetScale(4.0f, false);
 195   EXPECT_EQ(4.0f, GetMagnificationController()->GetScale());
 196   EXPECT_EQ("300,225 200x150", GetViewport().ToString());
 197   EXPECT_EQ("400,300", CurrentPointOfInterest());
 198
 199   GetMagnificationController()->SetScale(1.0f, false);
 200   EXPECT_EQ(1.0f, GetMagnificationController()->GetScale());
 201   EXPECT_EQ("0,0 800x600", GetViewport().ToString());
 202   EXPECT_EQ("400,300", CurrentPointOfInterest());
 203
 204   GetMagnificationController()->SetScale(3.0f, false);
 205   EXPECT_EQ(3.0f, GetMagnificationController()->GetScale());
 206   EXPECT_EQ("266,200 267x200", GetViewport().ToString());
 207   EXPECT_EQ("400,300", CurrentPointOfInterest());
 208 }
 209
 210 TEST_F(MagnificationControllerTest, MoveWindow) {
 211   // Enables magnifier and confirm the viewport is at center.
 212   GetMagnificationController()->SetEnabled(true);
 213   EXPECT_EQ(2.0f, GetMagnificationController()->GetScale());
 214   EXPECT_EQ("200,150 400x300", GetViewport().ToString());
 215
 216   // Move the viewport.
 217   GetMagnificationController()->MoveWindow(0, 0, false);
 218   EXPECT_EQ("0,0 400x300", GetViewport().ToString());
 219
 220   GetMagnificationController()->MoveWindow(200, 300, false);
 221   EXPECT_EQ("200,300 400x300", GetViewport().ToString());
 222
 223   GetMagnificationController()->MoveWindow(400, 0, false);
 224   EXPECT_EQ("400,0 400x300", GetViewport().ToString());
 225
 226   GetMagnificationController()->MoveWindow(400, 300, false);
 227   EXPECT_EQ("400,300 400x300", GetViewport().ToString());
 228
 229   // Confirms that the viewport can't across the top-left border.
 230   GetMagnificationController()->MoveWindow(-100, 0, false);
 231   EXPECT_EQ("0,0 400x300", GetViewport().ToString());
 232
 233   GetMagnificationController()->MoveWindow(0, -100, false);
 234   EXPECT_EQ("0,0 400x300", GetViewport().ToString());
 235
 236   GetMagnificationController()->MoveWindow(-100, -100, false);
 237   EXPECT_EQ("0,0 400x300", GetViewport().ToString());
 238
 239   // Confirms that the viewport can't across the bittom-right border.
 240   GetMagnificationController()->MoveWindow(800, 0, false);
 241   EXPECT_EQ("400,0 400x300", GetViewport().ToString());
 242
 243   GetMagnificationController()->MoveWindow(0, 400, false);
 244   EXPECT_EQ("0,300 400x300", GetViewport().ToString());
 245
 246   GetMagnificationController()->MoveWindow(200, 400, false);
 247   EXPECT_EQ("200,300 400x300", GetViewport().ToString());
 248
 249   GetMagnificationController()->MoveWindow(1000, 1000, false);
 250   EXPECT_EQ("400,300 400x300", GetViewport().ToString());
 251 }
 252
 253 TEST_F(MagnificationControllerTest, PointOfInterest) {
 254   ui::test::EventGenerator generator(Shell::GetPrimaryRootWindow());
 255
 256   generator.MoveMouseToInHost(gfx::Point(0, 0));
 257   EXPECT_EQ("0,0", CurrentPointOfInterest());
 258
 259   generator.MoveMouseToInHost(gfx::Point(799, 599));
 260   EXPECT_EQ("799,599", CurrentPointOfInterest());
 261
 262   generator.MoveMouseToInHost(gfx::Point(400, 300));
 263   EXPECT_EQ("400,300", CurrentPointOfInterest());
 264
 265   GetMagnificationController()->SetEnabled(true);
 266   EXPECT_EQ("400,300", CurrentPointOfInterest());
 267
 268   generator.MoveMouseToInHost(gfx::Point(500, 400));
 269   EXPECT_EQ("450,350", CurrentPointOfInterest());
 270 }
 271
 272 TEST_F(MagnificationControllerTest, PanWindow2xLeftToRight) {
 273   const aura::Env* env = aura::Env::GetInstance();
 274   ui::test::EventGenerator generator(Shell::GetPrimaryRootWindow());
 275
 276   generator.MoveMouseToInHost(gfx::Point(0, 0));
 277   EXPECT_EQ(1.f, GetMagnificationController()->GetScale());
 278   EXPECT_EQ("0,0 800x600", GetViewport().ToString());
 279   EXPECT_EQ("0,0", env->last_mouse_location().ToString());
 280
 281   // Enables magnifier and confirm the viewport is at center.
 282   GetMagnificationController()->SetEnabled(true);
 283   EXPECT_EQ(2.0f, GetMagnificationController()->GetScale());
 284
 285   GetMagnificationController()->MoveWindow(0, 0, false);
 286   generator.MoveMouseToInHost(gfx::Point(0, 0));
 287   EXPECT_EQ("0,0", env->last_mouse_location().ToString());
 288   EXPECT_EQ("0,0 400x300", GetViewport().ToString());
 289
 290   generator.MoveMouseToInHost(gfx::Point(300, 150));
 291   EXPECT_EQ("150,75", env->last_mouse_location().ToString());
 292   EXPECT_EQ("0,0 400x300", GetViewport().ToString());
 293
 294   generator.MoveMouseToInHost(gfx::Point(700, 150));
 295   EXPECT_EQ("350,75", env->last_mouse_location().ToString());
 296   EXPECT_EQ("0,0 400x300", GetViewport().ToString());
 297
 298   generator.MoveMouseToInHost(gfx::Point(701, 150));
 299   EXPECT_EQ("350,75", env->last_mouse_location().ToString());
 300   EXPECT_EQ("0,0 400x300", GetViewport().ToString());
 301
 302   generator.MoveMouseToInHost(gfx::Point(702, 150));
 303   EXPECT_EQ("351,75", env->last_mouse_location().ToString());
 304   EXPECT_EQ("1,0 400x300", GetViewport().ToString());
 305
 306   generator.MoveMouseToInHost(gfx::Point(703, 150));
 307   EXPECT_EQ("352,75", env->last_mouse_location().ToString());
 308   EXPECT_EQ("2,0 400x300", GetViewport().ToString());
 309
 310   generator.MoveMouseToInHost(gfx::Point(704, 150));
 311   EXPECT_EQ("354,75", env->last_mouse_location().ToString());
 312   EXPECT_EQ("4,0 400x300", GetViewport().ToString());
 313
 314   generator.MoveMouseToInHost(gfx::Point(712, 150));
 315   EXPECT_EQ("360,75", env->last_mouse_location().ToString());
 316   EXPECT_EQ("10,0 400x300", GetViewport().ToString());
 317
 318   generator.MoveMouseToInHost(gfx::Point(600, 150));
 319   EXPECT_EQ("310,75", env->last_mouse_location().ToString());
 320   EXPECT_EQ("10,0 400x300", GetViewport().ToString());
 321
 322   generator.MoveMouseToInHost(gfx::Point(720, 150));
 323   EXPECT_EQ("370,75", env->last_mouse_location().ToString());
 324   EXPECT_EQ("20,0 400x300", GetViewport().ToString());
 325
 326   generator.MoveMouseToInHost(gfx::Point(780, 150));
 327   EXPECT_EQ("410,75", env->last_mouse_location().ToString());
 328   EXPECT_EQ("410,75", CurrentPointOfInterest());
 329   EXPECT_EQ("60,0 400x300", GetViewport().ToString());
 330
 331   generator.MoveMouseToInHost(gfx::Point(799, 150));
 332   EXPECT_EQ("459,75", env->last_mouse_location().ToString());
 333   EXPECT_EQ("109,0 400x300", GetViewport().ToString());
 334
 335   generator.MoveMouseToInHost(gfx::Point(702, 150));
 336   EXPECT_EQ("460,75", env->last_mouse_location().ToString());
 337   EXPECT_EQ("110,0 400x300", GetViewport().ToString());
 338
 339   generator.MoveMouseToInHost(gfx::Point(780, 150));
 340   EXPECT_EQ("500,75", env->last_mouse_location().ToString());
 341   EXPECT_EQ("150,0 400x300", GetViewport().ToString());
 342
 343   generator.MoveMouseToInHost(gfx::Point(780, 150));
 344   EXPECT_EQ("540,75", env->last_mouse_location().ToString());
 345   EXPECT_EQ("190,0 400x300", GetViewport().ToString());
 346
 347   generator.MoveMouseToInHost(gfx::Point(780, 150));
 348   EXPECT_EQ("580,75", env->last_mouse_location().ToString());
 349   EXPECT_EQ("230,0 400x300", GetViewport().ToString());
 350
 351   generator.MoveMouseToInHost(gfx::Point(780, 150));
 352   EXPECT_EQ("620,75", env->last_mouse_location().ToString());
 353   EXPECT_EQ("270,0 400x300", GetViewport().ToString());
 354
 355   generator.MoveMouseToInHost(gfx::Point(780, 150));
 356   EXPECT_EQ("660,75", env->last_mouse_location().ToString());
 357   EXPECT_EQ("310,0 400x300", GetViewport().ToString());
 358
 359   generator.MoveMouseToInHost(gfx::Point(780, 150));
 360   EXPECT_EQ("700,75", env->last_mouse_location().ToString());
 361   EXPECT_EQ("350,0 400x300", GetViewport().ToString());
 362
 363   generator.MoveMouseToInHost(gfx::Point(780, 150));
 364   EXPECT_EQ("740,75", env->last_mouse_location().ToString());
 365   EXPECT_EQ("390,0 400x300", GetViewport().ToString());
 366
 367   generator.MoveMouseToInHost(gfx::Point(780, 150));
 368   EXPECT_EQ("780,75", env->last_mouse_location().ToString());
 369   EXPECT_EQ("400,0 400x300", GetViewport().ToString());
 370
 371   generator.MoveMouseToInHost(gfx::Point(799, 150));
 372   EXPECT_EQ("799,75", env->last_mouse_location().ToString());
 373   EXPECT_EQ("400,0 400x300", GetViewport().ToString());
 374 }
 375
 376 TEST_F(MagnificationControllerTest, PanWindow2xRightToLeft) {
 377   const aura::Env* env = aura::Env::GetInstance();
 378   ui::test::EventGenerator generator(Shell::GetPrimaryRootWindow());
 379
 380   generator.MoveMouseToInHost(gfx::Point(799, 300));
 381   EXPECT_EQ(1.f, GetMagnificationController()->GetScale());
 382   EXPECT_EQ("0,0 800x600", GetViewport().ToString());
 383   EXPECT_EQ("799,300", env->last_mouse_location().ToString());
 384
 385   // Enables magnifier and confirm the viewport is at center.
 386   GetMagnificationController()->SetEnabled(true);
 387
 388   generator.MoveMouseToInHost(gfx::Point(799, 300));
 389   EXPECT_EQ("798,300", env->last_mouse_location().ToString());
 390   EXPECT_EQ("400,150 400x300", GetViewport().ToString());
 391
 392   generator.MoveMouseToInHost(gfx::Point(0, 300));
 393   EXPECT_EQ("400,300", env->last_mouse_location().ToString());
 394   EXPECT_EQ("350,150 400x300", GetViewport().ToString());
 395
 396   generator.MoveMouseToInHost(gfx::Point(0, 300));
 397   EXPECT_EQ("350,300", env->last_mouse_location().ToString());
 398   EXPECT_EQ("300,150 400x300", GetViewport().ToString());
 399
 400   generator.MoveMouseToInHost(gfx::Point(0, 300));
 401   EXPECT_EQ("300,300", env->last_mouse_location().ToString());
 402   EXPECT_EQ("250,150 400x300", GetViewport().ToString());
 403
 404   generator.MoveMouseToInHost(gfx::Point(0, 300));
 405   EXPECT_EQ("250,300", env->last_mouse_location().ToString());
 406   EXPECT_EQ("200,150 400x300", GetViewport().ToString());
 407
 408   generator.MoveMouseToInHost(gfx::Point(0, 300));
 409   EXPECT_EQ("200,300", env->last_mouse_location().ToString());
 410   EXPECT_EQ("150,150 400x300", GetViewport().ToString());
 411
 412   generator.MoveMouseToInHost(gfx::Point(0, 300));
 413   EXPECT_EQ("150,300", env->last_mouse_location().ToString());
 414   EXPECT_EQ("100,150 400x300", GetViewport().ToString());
 415
 416   generator.MoveMouseToInHost(gfx::Point(0, 300));
 417   EXPECT_EQ("100,300", env->last_mouse_location().ToString());
 418   EXPECT_EQ("50,150 400x300", GetViewport().ToString());
 419
 420   generator.MoveMouseToInHost(gfx::Point(0, 300));
 421   EXPECT_EQ("50,300", env->last_mouse_location().ToString());
 422   EXPECT_EQ("0,150 400x300", GetViewport().ToString());
 423
 424   generator.MoveMouseToInHost(gfx::Point(0, 300));
 425   EXPECT_EQ("0,300", env->last_mouse_location().ToString());
 426   EXPECT_EQ("0,150 400x300", GetViewport().ToString());
 427 }
 428
 429 TEST_F(MagnificationControllerTest, PanWindowToRight) {
 430   const aura::Env* env = aura::Env::GetInstance();
 431   ui::test::EventGenerator generator(Shell::GetPrimaryRootWindow());
 432
 433   generator.MoveMouseToInHost(gfx::Point(400, 300));
 434   EXPECT_EQ(1.f, GetMagnificationController()->GetScale());
 435   EXPECT_EQ("0,0 800x600", GetViewport().ToString());
 436   EXPECT_EQ("400,300", env->last_mouse_location().ToString());
 437
 438   float scale = 2.f;
 439
 440   // Enables magnifier and confirm the viewport is at center.
 441   GetMagnificationController()->SetEnabled(true);
 442   EXPECT_FLOAT_EQ(2.f, GetMagnificationController()->GetScale());
 443
 444   scale *= ui::kMagnificationScaleFactor;
 445   GetMagnificationController()->SetScale(scale, false);
 446   EXPECT_FLOAT_EQ(2.3784142, GetMagnificationController()->GetScale());
 447   generator.MoveMouseToInHost(gfx::Point(400, 300));
 448   EXPECT_EQ("400,300", env->last_mouse_location().ToString());
 449   generator.MoveMouseToInHost(gfx::Point(799, 300));
 450   EXPECT_EQ("566,299", env->last_mouse_location().ToString());
 451   EXPECT_EQ("705,300", GetHostMouseLocation());
 452
 453   scale *= ui::kMagnificationScaleFactor;
 454   GetMagnificationController()->SetScale(scale, false);
 455   EXPECT_FLOAT_EQ(2.8284268, GetMagnificationController()->GetScale());
 456   generator.MoveMouseToInHost(gfx::Point(799, 300));
 457   EXPECT_EQ("599,299", env->last_mouse_location().ToString());
 458   EXPECT_EQ("702,300", GetHostMouseLocation());
 459
 460   scale *= ui::kMagnificationScaleFactor;
 461   GetMagnificationController()->SetScale(scale, false);
 462   EXPECT_FLOAT_EQ(3.3635852, GetMagnificationController()->GetScale());
 463   generator.MoveMouseToInHost(gfx::Point(799, 300));
 464   EXPECT_EQ("627,298", env->last_mouse_location().ToString());
 465   EXPECT_EQ("707,300", GetHostMouseLocation());
 466
 467   scale *= ui::kMagnificationScaleFactor;
 468   GetMagnificationController()->SetScale(scale, false);
 469   EXPECT_FLOAT_EQ(4.f, GetMagnificationController()->GetScale());
 470   generator.MoveMouseToInHost(gfx::Point(799, 300));
 471   EXPECT_EQ("649,298", env->last_mouse_location().ToString());
 472   EXPECT_EQ("704,300", GetHostMouseLocation());
 473 }
 474
 475 TEST_F(MagnificationControllerTest, PanWindowToLeft) {
 476   const aura::Env* env = aura::Env::GetInstance();
 477   ui::test::EventGenerator generator(Shell::GetPrimaryRootWindow());
 478
 479   generator.MoveMouseToInHost(gfx::Point(400, 300));
 480   EXPECT_EQ(1.f, GetMagnificationController()->GetScale());
 481   EXPECT_EQ("0,0 800x600", GetViewport().ToString());
 482   EXPECT_EQ("400,300", env->last_mouse_location().ToString());
 483
 484   float scale = 2.f;
 485
 486   // Enables magnifier and confirm the viewport is at center.
 487   GetMagnificationController()->SetEnabled(true);
 488   EXPECT_FLOAT_EQ(2.f, GetMagnificationController()->GetScale());
 489
 490   scale *= ui::kMagnificationScaleFactor;
 491   GetMagnificationController()->SetScale(scale, false);
 492   EXPECT_FLOAT_EQ(2.3784142, GetMagnificationController()->GetScale());
 493   generator.MoveMouseToInHost(gfx::Point(400, 300));
 494   EXPECT_EQ("400,300", env->last_mouse_location().ToString());
 495   generator.MoveMouseToInHost(gfx::Point(0, 300));
 496   EXPECT_EQ("231,299", env->last_mouse_location().ToString());
 497   EXPECT_EQ("100,300", GetHostMouseLocation());
 498
 499   scale *= ui::kMagnificationScaleFactor;
 500   GetMagnificationController()->SetScale(scale, false);
 501   EXPECT_FLOAT_EQ(2.8284268, GetMagnificationController()->GetScale());
 502   generator.MoveMouseToInHost(gfx::Point(0, 300));
 503   EXPECT_EQ("194,299", env->last_mouse_location().ToString());
 504   EXPECT_EQ("99,300", GetHostMouseLocation());
 505
 506   scale *= ui::kMagnificationScaleFactor;
 507   GetMagnificationController()->SetScale(scale, false);
 508   EXPECT_FLOAT_EQ(3.3635852, GetMagnificationController()->GetScale());
 509   generator.MoveMouseToInHost(gfx::Point(0, 300));
 510   EXPECT_EQ("164,298", env->last_mouse_location().ToString());
 511   EXPECT_EQ("98,300", GetHostMouseLocation());
 512
 513   scale *= ui::kMagnificationScaleFactor;
 514   GetMagnificationController()->SetScale(scale, false);
 515   EXPECT_FLOAT_EQ(4.f, GetMagnificationController()->GetScale());
 516   generator.MoveMouseToInHost(gfx::Point(0, 300));
 517   EXPECT_EQ("139,298", env->last_mouse_location().ToString());
 518   EXPECT_EQ("100,300", GetHostMouseLocation());
 519 }
 520
 521 TEST_F(MagnificationControllerTest, FollowTextInputFieldFocus) {
 522   CreateAndShowTextInputView(gfx::Rect(500, 300, 80, 80));
 523   gfx::Rect text_input_bounds = GetTextInputViewBounds();
 524
 525   // Enables magnifier and confirm the viewport is at center.
 526   GetMagnificationController()->SetEnabled(true);
 527   EXPECT_EQ(2.0f, GetMagnificationController()->GetScale());
 528   EXPECT_EQ("200,150 400x300", GetViewport().ToString());
 529
 530   // Move the viewport to (0, 0), so that text input field will be out of
 531   // the viewport region.
 532   GetMagnificationController()->MoveWindow(0, 0, false);
 533   EXPECT_EQ("0,0 400x300", GetViewport().ToString());
 534   EXPECT_FALSE(GetViewport().Intersects(text_input_bounds));
 535
 536   // Focus on the text input field.
 537   FocusOnTextInputView();
 538
 539   // Verify the view port has been moved to the place where the text field is
 540   // contained in the view port and the caret is at the center of the view port.
 541   gfx::Rect view_port = GetViewport();
 542   EXPECT_TRUE(view_port.Contains(text_input_bounds));
 543   gfx::Rect caret_bounds = GetCaretBounds();
 544   EXPECT_TRUE(text_input_bounds.Contains(caret_bounds));
 545   EXPECT_EQ(caret_bounds.origin(), view_port.CenterPoint());
 546 }
 547
 548 TEST_F(MagnificationControllerTest, FollowTextInputFieldKeyPress) {
 549   CreateAndShowTextInputView(gfx::Rect(385, 200, 80, 80));
 550   gfx::Rect text_input_bounds = GetTextInputViewBounds();
 551
 552   // Enables magnifier and confirm the viewport is at center.
 553   GetMagnificationController()->SetEnabled(true);
 554   EXPECT_EQ(2.0f, GetMagnificationController()->GetScale());
 555   EXPECT_EQ("200,150 400x300", GetViewport().ToString());
 556
 557   // Move the viewport to (0, 0), so that text input field intersects the
 558   // view port at the right edge.
 559   GetMagnificationController()->MoveWindow(0, 0, false);
 560   EXPECT_EQ("0,0 400x300", GetViewport().ToString());
 561   EXPECT_TRUE(GetViewport().Intersects(text_input_bounds));
 562
 563   // Focus on the text input field.
 564   FocusOnTextInputView();
 565
 566   // Verify the view port is not moved, and the caret is inside the view port.
 567   gfx::Rect view_port = GetViewport();
 568   EXPECT_EQ("0,0 400x300", view_port.ToString());
 569   EXPECT_TRUE(view_port.Intersects(text_input_bounds));
 570   EXPECT_TRUE(text_input_bounds.Contains(GetCaretBounds()));
 571
 572   // Press keys on text input simulate typing on text field and the caret
 573   // moves out of the old view port region. The view port is moved to the place
 574   // where caret's x coordinate is centered at the new view port.
 575   ui::test::EventGenerator generator(Shell::GetPrimaryRootWindow());
 576   generator.PressKey(ui::VKEY_A, 0);
 577   generator.ReleaseKey(ui::VKEY_A, 0);
 578   gfx::Rect caret_bounds = GetCaretBounds();
 579   EXPECT_FALSE(view_port.Intersects(caret_bounds));
 580
 581   gfx::Rect new_view_port = GetViewport();
 582   EXPECT_TRUE(new_view_port.Contains(caret_bounds));
 583   EXPECT_EQ(caret_bounds.x(), new_view_port.CenterPoint().x());
 584   EXPECT_EQ(view_port.y(), new_view_port.y());
 585 }
 586
 587 }  // namespace ash