Refactor Windows DPI Point, Rect, and Size for Multiple Monitor DPI Awareness

ui/gfx/screen_win_unittest.cc

Index: ui/gfx/screen_win_unittest.cc
diff --git a/ui/gfx/screen_win_unittest.cc b/ui/gfx/screen_win_unittest.cc
index b1118c17e23b693c07341a39dc97452ac685eb5f..4deb52a5c9c81f431692251c1ce7a708acd6658a 100644
--- a/ui/gfx/screen_win_unittest.cc
+++ b/ui/gfx/screen_win_unittest.cc
@@ -5,16 +5,22 @@
 #include "ui/gfx/screen_win.h"
 
 #include <cwchar>
+#include <memory>
 #include <string>
+#include <unordered_map>
 #include <vector>
 
 #include <windows.h>
 #include <stddef.h>
 
+#include "base/macros.h"
 #include "testing/gtest/include/gtest/gtest.h"
 #include "ui/gfx/display.h"
 #include "ui/gfx/geometry/rect.h"
+#include "ui/gfx/win/display_info.h"
+#include "ui/gfx/win/display_manager.h"
 #include "ui/gfx/win/dpi.h"
+#include "ui/gfx/win/screen_win_display.h"
 
 namespace gfx {
 
@@ -34,8 +40,130 @@ MONITORINFOEX CreateMonitorInfo(gfx::Rect monitor,
   return monitor_info;
 }
 
+class TestDisplayManager : public gfx::win::DisplayManager {
+ public:
+  static void InitializeDisplayManager(
+      const std::vector<gfx::win::DisplayInfo>& display_infos,
+      const std::vector<MONITORINFOEX>& monitor_infos,
+      const std::unordered_map<HWND, gfx::Rect>& hwnd_map)  {
+    scoped_ptr<TestDisplayManager> display_manager(
+        new TestDisplayManager(display_infos, monitor_infos, hwnd_map));
+    SetInstanceForTesting(std::move(display_manager));
+  }
+
+ private:
+  friend std::default_delete<TestDisplayManager>;
+
+  TestDisplayManager(const std::vector<gfx::win::DisplayInfo>& display_infos,
+                     const std::vector<MONITORINFOEX>& monitor_infos,
+                     const std::unordered_map<HWND, gfx::Rect>& hwnd_map)
+      : monitor_infos_(monitor_infos),
+        hwnd_map_(hwnd_map) {
+    UpdateFromDisplayInfos(display_infos);
+  }
+
+  ~TestDisplayManager() override = default;
+
+  MONITORINFOEX MonitorInfoFromScreenPoint(const gfx::Point& screen_point) const
+      override {
+    for (const MONITORINFOEX& monitor_info : monitor_infos_) {
+      if (gfx::Rect(monitor_info.rcMonitor).Contains(screen_point)) {
+        return monitor_info;
+      }
+    }
+    NOTREACHED();
+    return monitor_infos_[0];
+  }
+
+  MONITORINFOEX MonitorInfoFromScreenRect(const gfx::Rect& screen_rect) const
+      override {
+    MONITORINFOEX candidate = monitor_infos_[0];
+    int largest_area = 0;
+    for (const MONITORINFOEX& monitor_info : monitor_infos_) {
+      gfx::Rect bounds(monitor_info.rcMonitor);
+      if (bounds.Intersects(screen_rect)) {
+        bounds.Intersect(screen_rect);
+        int area = bounds.height() * bounds.width();
+        if (largest_area < area) {
+          candidate = monitor_info;
+          largest_area = area;
+        }
+      }
+    }
+    EXPECT_NE(largest_area, 0);
+    return candidate;
+  }
+
+  MONITORINFOEX MonitorInfoFromWindow(HWND hwnd) const override {
+    auto search = hwnd_map_.find(hwnd);
+    EXPECT_NE(search, hwnd_map_.end());
+    return MonitorInfoFromScreenRect(search->second);
+  }
+
+  HWND GetRootWindow(HWND hwnd) const override {
+    return hwnd;
+  }
+
+  std::vector<MONITORINFOEX> monitor_infos_;
+  std::unordered_map<HWND, gfx::Rect> hwnd_map_;
+
+  DISALLOW_COPY_AND_ASSIGN(TestDisplayManager);
+};
+
 }  // namespace
 
+// Manages setting up the ScreenWin global state.
+class TestScreenWinInitializer {
+ public:
+  TestScreenWinInitializer() : hwndLast_(0) {}
+
+  ~TestScreenWinInitializer() {
+    gfx::Screen::SetScreenInstance(gfx::SCREEN_TYPE_NATIVE, nullptr);
+  }
+
+  void AddMonitor(const gfx::Rect& pixel_bounds,
+                  const gfx::Rect& pixel_work,
+                  const wchar_t* device_name,
+                  float device_scale_factor) {
+    MONITORINFOEX monitor_info = CreateMonitorInfo(pixel_bounds,
+                                                   pixel_work,
+                                                   device_name);
+    monitor_infos_.push_back(monitor_info);
+    display_infos_.push_back(gfx::win::DisplayInfo(monitor_info,
+                                                   gfx::Display::ROTATE_0,
+                                                   device_scale_factor));
+  }
+
+  void InitializeScreenWin() {
+    ASSERT_EQ(screen_win_, nullptr);
+    TestDisplayManager::InitializeDisplayManager(display_infos_,
+                                                 monitor_infos_,
+                                                 hwnd_map_);
+    screen_win_.reset(new gfx::ScreenWin());
+    gfx::Screen::SetScreenInstance(gfx::SCREEN_TYPE_NATIVE, screen_win_.get());
+  }
+
+  HWND CreateFakeHwnd(const gfx::Rect& bounds) {
+    EXPECT_EQ(screen_win_, nullptr);
+    hwnd_map_.insert(std::pair<HWND, gfx::Rect>(++hwndLast_, bounds));
+    return hwndLast_;
+  }
+
+  Screen* GetScreen() {
+    if (!screen_win_) {
+      InitializeScreenWin();
+    }
+    return screen_win_.get();
+  }
+
+ private:
+  HWND hwndLast_;
+  scoped_ptr<ScreenWin> screen_win_;
+  std::vector<MONITORINFOEX> monitor_infos_;
+  std::vector<gfx::win::DisplayInfo> display_infos_;
+  std::unordered_map<HWND, gfx::Rect> hwnd_map_;
+};
+
 class ScreenWinTest : public testing::Test {
  private:
   void SetUp() override {
@@ -49,32 +177,869 @@ class ScreenWinTest : public testing::Test {
   }
 };
 
-TEST_F(ScreenWinTest, SingleDisplay1x) {
-  std::vector<MONITORINFOEX> monitor_infos;
-  monitor_infos.push_back(CreateMonitorInfo(gfx::Rect(0, 0, 1920, 1200),
-                                            gfx::Rect(0, 0, 1920, 1100),
-                                            L"primary"));
-  std::vector<gfx::Display> displays =
-      ScreenWin::GetDisplaysForMonitorInfos(monitor_infos);
+// Single Display of 1.0 Device Scale Factor.
+class ScreenWinTestSingleDisplay1x : public ScreenWinTest {
+ public:
+  static void SetUpTestCase() {
+    ScreenWinTest::SetUpTestCase();
+    screen_win_initializer_.reset(new TestScreenWinInitializer());
+    screen_win_initializer_->AddMonitor(gfx::Rect(0, 0, 1920, 1200),
+                                        gfx::Rect(0, 0, 1920, 1100),
+                                        L"primary",
+                                        1.0);
+    fake_hwnd_ =
+        screen_win_initializer_->CreateFakeHwnd(gfx::Rect(0, 0, 1920, 1100));
+    screen_win_initializer_->InitializeScreenWin();
+  }
+
+  static void TearDownTestCase() {
+    screen_win_initializer_.reset();
+    ScreenWinTest::TearDownTestCase();
+  }
+
+  Screen* GetScreen() {
+    return screen_win_initializer_->GetScreen();
+  }
+
+  HWND GetFakeHwnd() {
+    return fake_hwnd_;
+  }
+
+ private:
+  static scoped_ptr<TestScreenWinInitializer> screen_win_initializer_;
+  static HWND fake_hwnd_;
+};
+
+scoped_ptr<TestScreenWinInitializer>
+ScreenWinTestSingleDisplay1x::screen_win_initializer_;
 
+HWND ScreenWinTestSingleDisplay1x::fake_hwnd_ = NULL;
+
+TEST_F(ScreenWinTestSingleDisplay1x, GetDisplays) {
+  std::vector<gfx::Display> displays = GetScreen()->GetAllDisplays();
   ASSERT_EQ(1u, displays.size());
   EXPECT_EQ(gfx::Rect(0, 0, 1920, 1200), displays[0].bounds());
   EXPECT_EQ(gfx::Rect(0, 0, 1920, 1100), displays[0].work_area());
 }
 
-TEST_F(ScreenWinTest, SingleDisplay2x) {
-  gfx::SetDefaultDeviceScaleFactor(2.0);
+TEST_F(ScreenWinTestSingleDisplay1x, ScreenToDIPPoints) {
+  gfx::Point origin(0, 0);
+  gfx::Point middle(365, 694);
+  gfx::Point lower_right(1919, 1199);
+
+  EXPECT_EQ(origin, ScreenWin::ScreenToDIPPoint(origin));
+  EXPECT_EQ(middle, ScreenWin::ScreenToDIPPoint(middle));
+  EXPECT_EQ(lower_right, ScreenWin::ScreenToDIPPoint(lower_right));
+}
+
+TEST_F(ScreenWinTestSingleDisplay1x, DIPToScreenPoints) {
+  gfx::Point origin(0, 0);
+  gfx::Point middle(365, 694);
+  gfx::Point lower_right(1919, 1199);
+
+  EXPECT_EQ(origin, ScreenWin::DIPToScreenPoint(origin));
+  EXPECT_EQ(middle, ScreenWin::DIPToScreenPoint(middle));
+  EXPECT_EQ(lower_right, ScreenWin::DIPToScreenPoint(lower_right));
+}
+
+TEST_F(ScreenWinTestSingleDisplay1x, ClientToDIPPoints) {
+  HWND hwnd = GetFakeHwnd();
+
+  gfx::Point origin(0, 0);
+  gfx::Point middle(365, 694);
+  gfx::Point lower_right(1919, 1199);
+
+  EXPECT_EQ(origin, ScreenWin::ClientToDIPPoint(hwnd, origin));
+  EXPECT_EQ(middle, ScreenWin::ClientToDIPPoint(hwnd, middle));
+  EXPECT_EQ(lower_right, ScreenWin::ClientToDIPPoint(hwnd, lower_right));
+}
+
+TEST_F(ScreenWinTestSingleDisplay1x, DIPToClientPoints) {
+  HWND hwnd = GetFakeHwnd();
+
+  gfx::Point origin(0, 0);
+  gfx::Point middle(365, 694);
+  gfx::Point lower_right(1919, 1199);
+
+  EXPECT_EQ(origin, ScreenWin::DIPToClientPoint(hwnd, origin));
+  EXPECT_EQ(middle, ScreenWin::DIPToClientPoint(hwnd, middle));
+  EXPECT_EQ(lower_right, ScreenWin::DIPToClientPoint(hwnd, lower_right));
+}
+
+TEST_F(ScreenWinTestSingleDisplay1x, ScreenToDIPRects) {
+  HWND hwnd = GetFakeHwnd();
+
+  gfx::Rect origin(0, 0, 50, 100);
+  gfx::Rect middle(253, 495, 41, 52);
+
+  EXPECT_EQ(origin, ScreenWin::ScreenToDIPRect(hwnd, origin));
+  EXPECT_EQ(middle, ScreenWin::ScreenToDIPRect(hwnd, middle));
+}
+
+TEST_F(ScreenWinTestSingleDisplay1x, DIPToScreenRects) {
+  HWND hwnd = GetFakeHwnd();
+
+  gfx::Rect origin(0, 0, 50, 100);
+  gfx::Rect middle(253, 495, 41, 52);
+
+  EXPECT_EQ(origin, ScreenWin::DIPToScreenRect(hwnd, origin));
+  EXPECT_EQ(middle, ScreenWin::DIPToScreenRect(hwnd, middle));
+}
+
+TEST_F(ScreenWinTestSingleDisplay1x, ClientToDIPRects) {
+  HWND hwnd = GetFakeHwnd();
+
+  gfx::Rect origin(0, 0, 50, 100);
+  gfx::Rect middle(253, 495, 41, 52);
+
+  EXPECT_EQ(origin, ScreenWin::ClientToDIPRect(hwnd, origin));
+  EXPECT_EQ(middle, ScreenWin::ClientToDIPRect(hwnd, middle));
+}
+
+TEST_F(ScreenWinTestSingleDisplay1x, DIPToClientRects) {
+  HWND hwnd = GetFakeHwnd();
+
+  gfx::Rect origin(0, 0, 50, 100);
+  gfx::Rect middle(253, 495, 41, 52);
+
+  EXPECT_EQ(origin, ScreenWin::DIPToClientRect(hwnd, origin));
+  EXPECT_EQ(middle, ScreenWin::DIPToClientRect(hwnd, middle));
+}
+
+TEST_F(ScreenWinTestSingleDisplay1x, ScreenToDIPSize) {
+  HWND hwnd = GetFakeHwnd();
+
+  gfx::Size size(42, 131);
+  EXPECT_EQ(size, ScreenWin::ScreenToDIPSize(hwnd, size));
+}
+
+TEST_F(ScreenWinTestSingleDisplay1x, DIPToScreenSize) {
+  HWND hwnd = GetFakeHwnd();
+
+  gfx::Size size(42, 131);
+  EXPECT_EQ(size, ScreenWin::DIPToScreenSize(hwnd, size));
+}
+
+// Single Display of 2.0 Device Scale Factor.
+class ScreenWinTestSingleDisplay2x : public ScreenWinTest {
+ public:
+  static void SetUpTestCase() {
+    ScreenWinTest::SetUpTestCase();
+    screen_win_initializer_.reset(new TestScreenWinInitializer());
+    screen_win_initializer_->AddMonitor(gfx::Rect(0, 0, 1920, 1200),
+                                        gfx::Rect(0, 0, 1920, 1100),
+                                        L"primary",
+                                        2.0);
+    fake_hwnd_ =
+        screen_win_initializer_->CreateFakeHwnd(gfx::Rect(0, 0, 1920, 1100));
+    screen_win_initializer_->InitializeScreenWin();
+  }
+
+  static void TearDownTestCase() {
+    screen_win_initializer_.reset();
+    ScreenWinTest::TearDownTestCase();
+  }
+
+  Screen* GetScreen() {
+    return screen_win_initializer_->GetScreen();
+  }
+
+  HWND GetFakeHwnd() {
+    return fake_hwnd_;
+  }
+
+ private:
+  static scoped_ptr<TestScreenWinInitializer> screen_win_initializer_;
+  static HWND fake_hwnd_;
+};
 
-  std::vector<MONITORINFOEX> monitor_infos;
-  monitor_infos.push_back(CreateMonitorInfo(gfx::Rect(0, 0, 1920, 1200),
-                                            gfx::Rect(0, 0, 1920, 1100),
-                                            L"primary"));
-  std::vector<gfx::Display> displays =
-      ScreenWin::GetDisplaysForMonitorInfos(monitor_infos);
+scoped_ptr<TestScreenWinInitializer>
+ScreenWinTestSingleDisplay2x::screen_win_initializer_;
 
+HWND ScreenWinTestSingleDisplay2x::fake_hwnd_ = NULL;
+
+TEST_F(ScreenWinTestSingleDisplay2x, GetDisplays) {
+  std::vector<gfx::Display> displays = GetScreen()->GetAllDisplays();
   ASSERT_EQ(1u, displays.size());
   EXPECT_EQ(gfx::Rect(0, 0, 960, 600), displays[0].bounds());
   EXPECT_EQ(gfx::Rect(0, 0, 960, 550), displays[0].work_area());
 }
 
+TEST_F(ScreenWinTestSingleDisplay2x, ScreenToDIPPoints) {
+  EXPECT_EQ(gfx::Point(0, 0), ScreenWin::ScreenToDIPPoint(gfx::Point(0, 0)));
+  EXPECT_EQ(gfx::Point(182, 347),
+            ScreenWin::ScreenToDIPPoint(gfx::Point(365, 694)));
+  EXPECT_EQ(gfx::Point(959, 599),
+            ScreenWin::ScreenToDIPPoint(gfx::Point(1919, 1199)));
+}
+
+TEST_F(ScreenWinTestSingleDisplay2x, DIPToScreenPoints) {
+  EXPECT_EQ(gfx::Point(0, 0), ScreenWin::DIPToScreenPoint(gfx::Point(0, 0)));
+  EXPECT_EQ(gfx::Point(364, 694),
+            ScreenWin::DIPToScreenPoint(gfx::Point(182, 347)));
+  EXPECT_EQ(gfx::Point(1918, 1198),
+            ScreenWin::DIPToScreenPoint(gfx::Point(959, 599)));
+}
+
+TEST_F(ScreenWinTestSingleDisplay2x, ClientToDIPPoints) {
+  HWND hwnd = GetFakeHwnd();
+  EXPECT_EQ(gfx::Point(0, 0),
+            ScreenWin::ClientToDIPPoint(hwnd, gfx::Point(0, 0)));
+  EXPECT_EQ(gfx::Point(182, 347),
+            ScreenWin::ClientToDIPPoint(hwnd, gfx::Point(365, 694)));
+  EXPECT_EQ(gfx::Point(959, 599),
+            ScreenWin::ClientToDIPPoint(hwnd, gfx::Point(1919, 1199)));
+}
+
+TEST_F(ScreenWinTestSingleDisplay2x, DIPToClientPoints) {
+  HWND hwnd = GetFakeHwnd();
+  EXPECT_EQ(gfx::Point(0, 0),
+            ScreenWin::DIPToClientPoint(hwnd, gfx::Point(0, 0)));
+  EXPECT_EQ(gfx::Point(364, 694),
+            ScreenWin::DIPToClientPoint(hwnd, gfx::Point(182, 347)));
+  EXPECT_EQ(gfx::Point(1918, 1198),
+            ScreenWin::DIPToClientPoint(hwnd, gfx::Point(959, 599)));
+}
+
+TEST_F(ScreenWinTestSingleDisplay2x, ScreenToDIPRects) {
+  HWND hwnd = GetFakeHwnd();
+  EXPECT_EQ(gfx::Rect(0, 0, 25, 50),
+            ScreenWin::ScreenToDIPRect(hwnd, gfx::Rect(0, 0, 50, 100)));
+  EXPECT_EQ(gfx::Rect(126, 248, 21, 26),
+            ScreenWin::ScreenToDIPRect(hwnd, gfx::Rect(253, 496, 41, 52)));
+}
+
+TEST_F(ScreenWinTestSingleDisplay2x, DIPToScreenRects) {
+  HWND hwnd = GetFakeHwnd();
+  EXPECT_EQ(gfx::Rect(0, 0, 50, 100),
+            ScreenWin::DIPToScreenRect(hwnd, gfx::Rect(0, 0, 25, 50)));
+  EXPECT_EQ(gfx::Rect(252, 496, 42, 52),
+            ScreenWin::DIPToScreenRect(hwnd, gfx::Rect(126, 248, 21, 26)));
+}
+
+TEST_F(ScreenWinTestSingleDisplay2x, ClientToDIPRects) {
+  HWND hwnd = GetFakeHwnd();
+  EXPECT_EQ(gfx::Rect(0, 0, 25, 50),
+            ScreenWin::ClientToDIPRect(hwnd, gfx::Rect(0, 0, 50, 100)));
+  EXPECT_EQ(gfx::Rect(126, 248, 21, 26),
+            ScreenWin::ClientToDIPRect(hwnd, gfx::Rect(253, 496, 41, 52)));
+}
+
+TEST_F(ScreenWinTestSingleDisplay2x, DIPToClientRects) {
+  HWND hwnd = GetFakeHwnd();
+  EXPECT_EQ(gfx::Rect(0, 0, 50, 100),
+            ScreenWin::DIPToClientRect(hwnd, gfx::Rect(0, 0, 25, 50)));
+  EXPECT_EQ(gfx::Rect(252, 496, 42, 52),
+            ScreenWin::DIPToClientRect(hwnd, gfx::Rect(126, 248, 21, 26)));
+}
+
+TEST_F(ScreenWinTestSingleDisplay2x, ScreenToDIPSize) {
+  EXPECT_EQ(gfx::Size(21, 66),
+            ScreenWin::ScreenToDIPSize(GetFakeHwnd(), gfx::Size(42, 131)));
+}
+
+TEST_F(ScreenWinTestSingleDisplay2x, DIPToScreenSize) {
+  EXPECT_EQ(gfx::Size(42, 132),
+            ScreenWin::DIPToScreenSize(GetFakeHwnd(), gfx::Size(21, 66)));
+}
+
+// Two Displays of 1.0 Device Scale Factor.
+class ScreenWinTestTwoDisplays1x : public ScreenWinTest {
+ public:
+  static void SetUpTestCase() {
+    ScreenWinTest::SetUpTestCase();
+    screen_win_initializer_.reset(new TestScreenWinInitializer());
+    screen_win_initializer_->AddMonitor(gfx::Rect(0, 0, 1920, 1200),
+                                        gfx::Rect(0, 0, 1920, 1100),
+                                        L"primary",
+                                        1.0);
+    screen_win_initializer_->AddMonitor(gfx::Rect(1920, 0, 800, 600),
+                                        gfx::Rect(1920, 0, 800, 600),
+                                        L"secondary",
+                                        1.0);
+    fake_hwnd_left_ =
+        screen_win_initializer_->CreateFakeHwnd(gfx::Rect(0, 0, 1920, 1100));
+    fake_hwnd_right_ =
+        screen_win_initializer_->CreateFakeHwnd(gfx::Rect(1920, 0, 800, 600));
+    screen_win_initializer_->InitializeScreenWin();
+  }
+
+  static void TearDownTestCase() {
+    screen_win_initializer_.reset();
+    ScreenWinTest::TearDownTestCase();
+  }
+
+  Screen* GetScreen() {
+    return screen_win_initializer_->GetScreen();
+  }
+
+  HWND GetLeftFakeHwnd() {
+    return fake_hwnd_left_;
+  }
+
+  HWND GetRightFakeHwnd() {
+    return fake_hwnd_right_;
+  }
+
+ private:
+  static scoped_ptr<TestScreenWinInitializer> screen_win_initializer_;
+  static HWND fake_hwnd_left_;
+  static HWND fake_hwnd_right_;
+};
+
+scoped_ptr<TestScreenWinInitializer>
+ScreenWinTestTwoDisplays1x::screen_win_initializer_;
+
+HWND ScreenWinTestTwoDisplays1x::fake_hwnd_left_ = NULL;
+
+HWND ScreenWinTestTwoDisplays1x::fake_hwnd_right_ = NULL;
+
+TEST_F(ScreenWinTestTwoDisplays1x, GetDisplays) {
+  std::vector<gfx::Display> displays = GetScreen()->GetAllDisplays();
+  ASSERT_EQ(2u, displays.size());
+  EXPECT_EQ(gfx::Rect(0, 0, 1920, 1200), displays[0].bounds());
+  EXPECT_EQ(gfx::Rect(0, 0, 1920, 1100), displays[0].work_area());
+  EXPECT_EQ(gfx::Rect(1920, 0, 800, 600), displays[1].bounds());
+  EXPECT_EQ(gfx::Rect(1920, 0, 800, 600), displays[1].work_area());
+}
+
+TEST_F(ScreenWinTestTwoDisplays1x, ScreenToDIPRects) {
+  HWND left_hwnd = GetLeftFakeHwnd();
+  gfx::Rect left_origin(0, 0, 50, 100);
+  gfx::Rect left_middle(253, 495, 41, 52);
+  EXPECT_EQ(left_origin, ScreenWin::ScreenToDIPRect(left_hwnd, left_origin));
+  EXPECT_EQ(left_middle, ScreenWin::ScreenToDIPRect(left_hwnd, left_middle));
+
+  HWND right_hwnd = GetRightFakeHwnd();
+  gfx::Rect right_origin(1920, 0, 200, 300);
+  gfx::Rect right_middle(2000, 496, 100, 200);
+  EXPECT_EQ(right_origin, ScreenWin::ScreenToDIPRect(right_hwnd, right_origin));
+  EXPECT_EQ(right_middle, ScreenWin::ScreenToDIPRect(right_hwnd, right_middle));
+}
+
+TEST_F(ScreenWinTestTwoDisplays1x, DIPToScreenRects) {
+  HWND left_hwnd = GetLeftFakeHwnd();
+  gfx::Rect left_origin(0, 0, 50, 100);
+  gfx::Rect left_middle(253, 495, 41, 52);
+  EXPECT_EQ(left_origin, ScreenWin::DIPToScreenRect(left_hwnd, left_origin));
+  EXPECT_EQ(left_middle, ScreenWin::DIPToScreenRect(left_hwnd, left_middle));
+
+  HWND right_hwnd = GetRightFakeHwnd();
+  gfx::Rect right_origin(1920, 0, 200, 300);
+  gfx::Rect right_middle(2000, 496, 100, 200);
+  EXPECT_EQ(right_origin, ScreenWin::DIPToScreenRect(right_hwnd, right_origin));
+  EXPECT_EQ(right_middle, ScreenWin::DIPToScreenRect(right_hwnd, right_middle));
+}
+
+TEST_F(ScreenWinTestTwoDisplays1x, ClientToDIPRects) {
+  gfx::Rect origin(0, 0, 50, 100);
+  gfx::Rect middle(253, 495, 41, 52);
+
+  HWND left_hwnd = GetLeftFakeHwnd();
+  EXPECT_EQ(origin, ScreenWin::ClientToDIPRect(left_hwnd, origin));
+  EXPECT_EQ(middle, ScreenWin::ClientToDIPRect(left_hwnd, middle));
+
+
+  HWND right_hwnd = GetRightFakeHwnd();
+  EXPECT_EQ(origin, ScreenWin::ClientToDIPRect(right_hwnd, origin));
+  EXPECT_EQ(middle, ScreenWin::ClientToDIPRect(right_hwnd, middle));
+}
+
+TEST_F(ScreenWinTestTwoDisplays1x, DIPToClientRects) {
+  gfx::Rect origin(0, 0, 50, 100);
+  gfx::Rect middle(253, 495, 41, 52);
+
+  HWND left_hwnd = GetLeftFakeHwnd();
+  EXPECT_EQ(origin, ScreenWin::DIPToClientRect(left_hwnd, origin));
+  EXPECT_EQ(middle, ScreenWin::DIPToClientRect(left_hwnd, middle));
+
+
+  HWND right_hwnd = GetRightFakeHwnd();
+  EXPECT_EQ(origin, ScreenWin::DIPToClientRect(right_hwnd, origin));
+  EXPECT_EQ(middle, ScreenWin::DIPToClientRect(right_hwnd, middle));
+}
+
+// Two Displays of 2.0 Device Scale Factor.
+class ScreenWinTestTwoDisplays2x : public ScreenWinTest {
+ public:
+  static void SetUpTestCase() {
+    ScreenWinTest::SetUpTestCase();
+    screen_win_initializer_.reset(new TestScreenWinInitializer());
+    screen_win_initializer_->AddMonitor(gfx::Rect(0, 0, 1920, 1200),
+                                        gfx::Rect(0, 0, 1920, 1100),
+                                        L"primary",
+                                        2.0);
+    screen_win_initializer_->AddMonitor(gfx::Rect(1920, 0, 800, 600),
+                                        gfx::Rect(1920, 0, 800, 600),
+                                        L"secondary",
+                                        2.0);
+    fake_hwnd_left_ =
+        screen_win_initializer_->CreateFakeHwnd(gfx::Rect(0, 0, 1920, 1100));
+    fake_hwnd_right_ =
+        screen_win_initializer_->CreateFakeHwnd(gfx::Rect(1920, 0, 800, 600));
+    screen_win_initializer_->InitializeScreenWin();
+  }
+
+  static void TearDownTestCase() {
+    screen_win_initializer_.reset();
+    ScreenWinTest::TearDownTestCase();
+  }
+
+  Screen* GetScreen() {
+    return screen_win_initializer_->GetScreen();
+  }
+
+  HWND GetLeftFakeHwnd() {
+    return fake_hwnd_left_;
+  }
+
+  HWND GetRightFakeHwnd() {
+    return fake_hwnd_right_;
+  }
+
+ private:
+  static scoped_ptr<TestScreenWinInitializer> screen_win_initializer_;
+  static HWND fake_hwnd_left_;
+  static HWND fake_hwnd_right_;
+};
+
+scoped_ptr<TestScreenWinInitializer>
+ScreenWinTestTwoDisplays2x::screen_win_initializer_;
+
+HWND ScreenWinTestTwoDisplays2x::fake_hwnd_left_ = NULL;
+
+HWND ScreenWinTestTwoDisplays2x::fake_hwnd_right_ = NULL;
+
+TEST_F(ScreenWinTestTwoDisplays2x, GetDisplays) {
+  std::vector<gfx::Display> displays = GetScreen()->GetAllDisplays();
+  ASSERT_EQ(2u, displays.size());
+  EXPECT_EQ(gfx::Rect(0, 0, 960, 600), displays[0].bounds());
+  EXPECT_EQ(gfx::Rect(0, 0, 960, 550), displays[0].work_area());
+  EXPECT_EQ(gfx::Rect(960, 0, 400, 300), displays[1].bounds());
+  EXPECT_EQ(gfx::Rect(960, 0, 400, 300), displays[1].work_area());
+}
+
+TEST_F(ScreenWinTestTwoDisplays2x, ScreenToDIPRects) {
+  HWND left_hwnd = GetLeftFakeHwnd();
+  EXPECT_EQ(gfx::Rect(0, 0, 25, 50),
+            ScreenWin::ScreenToDIPRect(left_hwnd, gfx::Rect(0, 0, 50, 100)));
+  EXPECT_EQ(gfx::Rect(126, 248, 21, 26),
+            ScreenWin::ScreenToDIPRect(left_hwnd, gfx::Rect(253, 496, 41, 52)));
+
+  HWND right_hwnd = GetRightFakeHwnd();
+  EXPECT_EQ(gfx::Rect(960, 0, 100, 150),
+            ScreenWin::ScreenToDIPRect(right_hwnd,
+                                       gfx::Rect(1920, 0, 200, 300)));
+  EXPECT_EQ(gfx::Rect(1000, 248, 50, 100),
+            ScreenWin::ScreenToDIPRect(right_hwnd,
+                                       gfx::Rect(2000, 496, 100, 200)));
+}
+
+TEST_F(ScreenWinTestTwoDisplays2x, DIPToScreenRects) {
+  HWND left_hwnd = GetLeftFakeHwnd();
+  EXPECT_EQ(gfx::Rect(0, 0, 50, 100),
+            ScreenWin::DIPToScreenRect(left_hwnd, gfx::Rect(0, 0, 25, 50)));
+  EXPECT_EQ(gfx::Rect(252, 496, 42, 52),
+            ScreenWin::DIPToScreenRect(left_hwnd, gfx::Rect(126, 248, 21, 26)));
+
+  HWND right_hwnd = GetRightFakeHwnd();
+  EXPECT_EQ(gfx::Rect(1920, 0, 200, 300),
+            ScreenWin::DIPToScreenRect(right_hwnd,
+                                       gfx::Rect(960, 0, 100, 150)));
+  EXPECT_EQ(gfx::Rect(2000, 496, 100, 200),
+            ScreenWin::DIPToScreenRect(right_hwnd,
+                                       gfx::Rect(1000, 248, 50, 100)));
+}
+
+TEST_F(ScreenWinTestTwoDisplays2x, ClientToDIPRects) {
+  HWND left_hwnd = GetLeftFakeHwnd();
+  EXPECT_EQ(gfx::Rect(0, 0, 25, 50),
+            ScreenWin::ClientToDIPRect(left_hwnd, gfx::Rect(0, 0, 50, 100)));
+  EXPECT_EQ(gfx::Rect(126, 248, 21, 26),
+            ScreenWin::ClientToDIPRect(left_hwnd, gfx::Rect(253, 496, 41, 52)));
+
+  HWND right_hwnd = GetRightFakeHwnd();
+  EXPECT_EQ(gfx::Rect(0, 0, 25, 50),
+            ScreenWin::ClientToDIPRect(right_hwnd, gfx::Rect(0, 0, 50, 100)));
+  EXPECT_EQ(gfx::Rect(126, 248, 21, 26),
+            ScreenWin::ClientToDIPRect(right_hwnd,
+                                       gfx::Rect(253, 496, 41, 52)));
+}
+
+TEST_F(ScreenWinTestTwoDisplays2x, DIPToClientRects) {
+  HWND left_hwnd = GetLeftFakeHwnd();
+  EXPECT_EQ(gfx::Rect(0, 0, 50, 100),
+            ScreenWin::DIPToClientRect(left_hwnd, gfx::Rect(0, 0, 25, 50)));
+  EXPECT_EQ(gfx::Rect(252, 496, 42, 52),
+            ScreenWin::DIPToClientRect(left_hwnd, gfx::Rect(126, 248, 21, 26)));
+}
+
+// Two Displays of 1.0 (Left) and 2.0 (Right) Device Scale Factor.
+class ScreenWinTestTwoDisplays1x2x : public ScreenWinTest {
+ public:
+  static void SetUpTestCase() {
+    ScreenWinTest::SetUpTestCase();
+    screen_win_initializer_.reset(new TestScreenWinInitializer());
+    screen_win_initializer_->AddMonitor(gfx::Rect(0, 0, 1920, 1200),
+                                        gfx::Rect(0, 0, 1920, 1100),
+                                        L"primary",
+                                        1.0);
+    screen_win_initializer_->AddMonitor(gfx::Rect(1920, 0, 800, 600),
+                                        gfx::Rect(1920, 0, 800, 600),
+                                        L"secondary",
+                                        2.0);
+    fake_hwnd_left_ =
+        screen_win_initializer_->CreateFakeHwnd(gfx::Rect(0, 0, 1920, 1100));
+    fake_hwnd_right_ =
+        screen_win_initializer_->CreateFakeHwnd(gfx::Rect(1920, 0, 800, 600));
+    screen_win_initializer_->InitializeScreenWin();
+  }
+
+  static void TearDownTestCase() {
+    screen_win_initializer_.reset();
+    ScreenWinTest::TearDownTestCase();
+  }
+
+  Screen* GetScreen() {
+    return screen_win_initializer_->GetScreen();
+  }
+
+  HWND GetLeftFakeHwnd() {
+    return fake_hwnd_left_;
+  }
+
+  HWND GetRightFakeHwnd() {
+    return fake_hwnd_right_;
+  }
+
+ private:
+  static scoped_ptr<TestScreenWinInitializer> screen_win_initializer_;
+  static HWND fake_hwnd_left_;
+  static HWND fake_hwnd_right_;
+};
+
+scoped_ptr<TestScreenWinInitializer>
+ScreenWinTestTwoDisplays1x2x::screen_win_initializer_;
+
+HWND ScreenWinTestTwoDisplays1x2x::fake_hwnd_left_ = NULL;
+
+HWND ScreenWinTestTwoDisplays1x2x::fake_hwnd_right_ = NULL;
+
+TEST_F(ScreenWinTestTwoDisplays1x2x, GetDisplays) {
+  std::vector<gfx::Display> displays = GetScreen()->GetAllDisplays();
+  ASSERT_EQ(2u, displays.size());
+  EXPECT_EQ(gfx::Rect(0, 0, 1920, 1200), displays[0].bounds());
+  EXPECT_EQ(gfx::Rect(0, 0, 1920, 1100), displays[0].work_area());
+  EXPECT_EQ(gfx::Rect(1920, 0, 400, 300), displays[1].bounds());
+  EXPECT_EQ(gfx::Rect(1920, 0, 400, 300), displays[1].work_area());
+}
+
+TEST_F(ScreenWinTestTwoDisplays1x2x, ScreenToDIPRects) {
+  HWND left_hwnd = GetLeftFakeHwnd();
+  EXPECT_EQ(gfx::Rect(0, 0, 50, 100),
+            ScreenWin::ScreenToDIPRect(left_hwnd, gfx::Rect(0, 0, 50, 100)));
+  EXPECT_EQ(gfx::Rect(253, 496, 41, 52),
+            ScreenWin::ScreenToDIPRect(left_hwnd, gfx::Rect(253, 496, 41, 52)));
+
+  HWND right_hwnd = GetRightFakeHwnd();
+  EXPECT_EQ(gfx::Rect(1920, 0, 100, 150),
+            ScreenWin::ScreenToDIPRect(right_hwnd,
+                                       gfx::Rect(1920, 0, 200, 300)));
+  EXPECT_EQ(gfx::Rect(1960, 248, 50, 100),
+            ScreenWin::ScreenToDIPRect(right_hwnd,
+                                       gfx::Rect(2000, 496, 100, 200)));
+}
+
+TEST_F(ScreenWinTestTwoDisplays1x2x, DIPToScreenRects) {
+  HWND left_hwnd = GetLeftFakeHwnd();
+  EXPECT_EQ(gfx::Rect(0, 0, 50, 100),
+            ScreenWin::DIPToScreenRect(left_hwnd, gfx::Rect(0, 0, 50, 100)));
+  EXPECT_EQ(gfx::Rect(252, 496, 42, 52),
+            ScreenWin::DIPToScreenRect(left_hwnd, gfx::Rect(252, 496, 42, 52)));
+
+  HWND right_hwnd = GetRightFakeHwnd();
+  EXPECT_EQ(gfx::Rect(1920, 0, 200, 300),
+            ScreenWin::DIPToScreenRect(right_hwnd,
+                                       gfx::Rect(1920, 0, 100, 150)));
+  EXPECT_EQ(gfx::Rect(2000, 496, 100, 200),
+            ScreenWin::DIPToScreenRect(right_hwnd,
+                                       gfx::Rect(1960, 248, 50, 100)));
+}
+
+TEST_F(ScreenWinTestTwoDisplays1x2x, ClientToDIPRects) {
+  HWND left_hwnd = GetLeftFakeHwnd();
+  EXPECT_EQ(gfx::Rect(0, 0, 50, 100),
+            ScreenWin::ClientToDIPRect(left_hwnd, gfx::Rect(0, 0, 50, 100)));
+  EXPECT_EQ(gfx::Rect(253, 496, 41, 52),
+            ScreenWin::ClientToDIPRect(left_hwnd, gfx::Rect(253, 496, 41, 52)));
+
+  HWND right_hwnd = GetRightFakeHwnd();
+  EXPECT_EQ(gfx::Rect(0, 0, 25, 50),
+            ScreenWin::ClientToDIPRect(right_hwnd, gfx::Rect(0, 0, 50, 100)));
+  EXPECT_EQ(gfx::Rect(126, 248, 21, 26),
+            ScreenWin::ClientToDIPRect(right_hwnd,
+                                       gfx::Rect(253, 496, 41, 52)));
+}
+
+TEST_F(ScreenWinTestTwoDisplays1x2x, DIPToClientRects) {
+  HWND left_hwnd = GetLeftFakeHwnd();
+  EXPECT_EQ(gfx::Rect(0, 0, 50, 100),
+            ScreenWin::DIPToClientRect(left_hwnd, gfx::Rect(0, 0, 50, 100)));
+  EXPECT_EQ(gfx::Rect(252, 496, 42, 52),
+            ScreenWin::DIPToClientRect(left_hwnd, gfx::Rect(252, 496, 42, 52)));
+
+  HWND right_hwnd = GetRightFakeHwnd();
+  EXPECT_EQ(gfx::Rect(0, 0, 50, 100),
+            ScreenWin::DIPToClientRect(right_hwnd, gfx::Rect(0, 0, 25, 50)));
+  EXPECT_EQ(gfx::Rect(252, 496, 42, 52),
+            ScreenWin::DIPToClientRect(right_hwnd,
+                                       gfx::Rect(126, 248, 21, 26)));
+}
+
+// Two Displays of 2.0 (Left) and 1.0 (Right) Device Scale Factor.
+class ScreenWinTestTwoDisplays2x1x : public ScreenWinTest {
+ public:
+  static void SetUpTestCase() {
+    ScreenWinTest::SetUpTestCase();
+    screen_win_initializer_.reset(new TestScreenWinInitializer());
+    screen_win_initializer_->AddMonitor(gfx::Rect(0, 0, 1920, 1200),
+                                        gfx::Rect(0, 0, 1920, 1100),
+                                        L"primary",
+                                        2.0);
+    screen_win_initializer_->AddMonitor(gfx::Rect(1920, 0, 800, 600),
+                                        gfx::Rect(1920, 0, 800, 600),
+                                        L"secondary",
+                                        1.0);
+    fake_hwnd_left_ =
+        screen_win_initializer_->CreateFakeHwnd(gfx::Rect(0, 0, 1920, 1100));
+    fake_hwnd_right_ =
+        screen_win_initializer_->CreateFakeHwnd(gfx::Rect(1920, 0, 800, 600));
+    screen_win_initializer_->InitializeScreenWin();
+  }
+
+  static void TearDownTestCase() {
+    screen_win_initializer_.reset();
+    ScreenWinTest::TearDownTestCase();
+  }
+
+  Screen* GetScreen() {
+    return screen_win_initializer_->GetScreen();
+  }
+
+  HWND GetLeftFakeHwnd() {
+    return fake_hwnd_left_;
+  }
+
+  HWND GetRightFakeHwnd() {
+    return fake_hwnd_right_;
+  }
+
+ private:
+  static scoped_ptr<TestScreenWinInitializer> screen_win_initializer_;
+  static HWND fake_hwnd_left_;
+  static HWND fake_hwnd_right_;
+};
+
+scoped_ptr<TestScreenWinInitializer>
+ScreenWinTestTwoDisplays2x1x::screen_win_initializer_;
+
+HWND ScreenWinTestTwoDisplays2x1x::fake_hwnd_left_ = NULL;
+
+HWND ScreenWinTestTwoDisplays2x1x::fake_hwnd_right_ = NULL;
+
+TEST_F(ScreenWinTestTwoDisplays2x1x, GetDisplays) {
+  std::vector<gfx::Display> displays = GetScreen()->GetAllDisplays();
+  ASSERT_EQ(2u, displays.size());
+  EXPECT_EQ(gfx::Rect(0, 0, 960, 600), displays[0].bounds());
+  EXPECT_EQ(gfx::Rect(0, 0, 960, 550), displays[0].work_area());
+  EXPECT_EQ(gfx::Rect(960, 0, 800, 600), displays[1].bounds());
+  EXPECT_EQ(gfx::Rect(960, 0, 800, 600), displays[1].work_area());
+}
+
+TEST_F(ScreenWinTestTwoDisplays2x1x, ScreenToDIPRects) {
+  HWND left_hwnd = GetLeftFakeHwnd();
+  EXPECT_EQ(gfx::Rect(0, 0, 25, 50),
+            ScreenWin::ScreenToDIPRect(left_hwnd, gfx::Rect(0, 0, 50, 100)));
+  EXPECT_EQ(gfx::Rect(126, 248, 21, 26),
+            ScreenWin::ScreenToDIPRect(left_hwnd, gfx::Rect(253, 496, 41, 52)));
+
+  HWND right_hwnd = GetRightFakeHwnd();
+  EXPECT_EQ(gfx::Rect(960, 0, 200, 300),
+            ScreenWin::ScreenToDIPRect(right_hwnd,
+                                       gfx::Rect(1920, 0, 200, 300)));
+  EXPECT_EQ(gfx::Rect(1040, 496, 100, 200),
+            ScreenWin::ScreenToDIPRect(right_hwnd,
+                                       gfx::Rect(2000, 496, 100, 200)));
+}
+
+TEST_F(ScreenWinTestTwoDisplays2x1x, DIPToScreenRects) {
+  HWND left_hwnd = GetLeftFakeHwnd();
+  EXPECT_EQ(gfx::Rect(0, 0, 50, 100),
+            ScreenWin::DIPToScreenRect(left_hwnd, gfx::Rect(0, 0, 25, 50)));
+  EXPECT_EQ(gfx::Rect(252, 496, 42, 52),
+            ScreenWin::DIPToScreenRect(left_hwnd, gfx::Rect(126, 248, 21, 26)));
+
+  HWND right_hwnd = GetRightFakeHwnd();
+  EXPECT_EQ(gfx::Rect(1920, 0, 200, 300),
+            ScreenWin::DIPToScreenRect(right_hwnd,
+                                       gfx::Rect(960, 0, 200, 300)));
+  EXPECT_EQ(gfx::Rect(2000, 496, 100, 200),
+            ScreenWin::DIPToScreenRect(right_hwnd,
+                                       gfx::Rect(1040, 496, 100, 200)));
+}
+
+TEST_F(ScreenWinTestTwoDisplays2x1x, ClientToDIPRects) {
+  HWND left_hwnd = GetLeftFakeHwnd();
+  EXPECT_EQ(gfx::Rect(0, 0, 25, 50),
+            ScreenWin::ClientToDIPRect(left_hwnd, gfx::Rect(0, 0, 50, 100)));
+  EXPECT_EQ(gfx::Rect(126, 248, 21, 26),
+            ScreenWin::ClientToDIPRect(left_hwnd, gfx::Rect(253, 496, 41, 52)));
+
+  HWND right_hwnd = GetRightFakeHwnd();
+  EXPECT_EQ(gfx::Rect(0, 0, 50, 100),
+            ScreenWin::ClientToDIPRect(right_hwnd, gfx::Rect(0, 0, 50, 100)));
+  EXPECT_EQ(gfx::Rect(253, 496, 41, 52),
+            ScreenWin::ClientToDIPRect(right_hwnd,
+                                       gfx::Rect(253, 496, 41, 52)));
+}
+
+TEST_F(ScreenWinTestTwoDisplays2x1x, DIPToClientRects) {
+  HWND left_hwnd = GetLeftFakeHwnd();
+  EXPECT_EQ(gfx::Rect(0, 0, 50, 100),
+            ScreenWin::DIPToClientRect(left_hwnd, gfx::Rect(0, 0, 25, 50)));
+  EXPECT_EQ(gfx::Rect(252, 496, 42, 52),
+            ScreenWin::DIPToClientRect(left_hwnd, gfx::Rect(126, 248, 21, 26)));
+
+  HWND right_hwnd = GetRightFakeHwnd();
+  EXPECT_EQ(gfx::Rect(0, 0, 50, 100),
+            ScreenWin::DIPToClientRect(right_hwnd, gfx::Rect(0, 0, 50, 100)));
+  EXPECT_EQ(gfx::Rect(253, 496, 41, 52),
+            ScreenWin::DIPToClientRect(right_hwnd,
+                                       gfx::Rect(253, 496, 41, 52)));
+}
+
+// Two Displays of 2.0 (Left) and 1.0 (Right) Device Scale Factor under
+// Windows DPI Virtualization. Note that the displays do not form a euclidean
+// space.
+class ScreenWinTestTwoDisplays2x1xVirtualized : public ScreenWinTest {
+ public:
+  static void SetUpTestCase() {
+    ScreenWinTest::SetUpTestCase();
+    screen_win_initializer_.reset(new TestScreenWinInitializer());
+    screen_win_initializer_->AddMonitor(gfx::Rect(0, 0, 3200, 1600),
+                                        gfx::Rect(0, 0, 3200, 1500),
+                                        L"primary",
+                                        2.0);
+    screen_win_initializer_->AddMonitor(gfx::Rect(6400, 0, 3840, 2400),
+                                        gfx::Rect(6400, 0, 3840, 2400),
+                                        L"secondary",
+                                        2.0);
+    fake_hwnd_left_ =
+        screen_win_initializer_->CreateFakeHwnd(gfx::Rect(0, 0, 3200, 1500));
+    fake_hwnd_right_ =
+        screen_win_initializer_->CreateFakeHwnd(gfx::Rect(6400, 0, 3840, 2400));
+    screen_win_initializer_->InitializeScreenWin();
+  }
+
+  static void TearDownTestCase() {
+    screen_win_initializer_.reset();
+    ScreenWinTest::TearDownTestCase();
+  }
+
+  Screen* GetScreen() {
+    return screen_win_initializer_->GetScreen();
+  }
+
+  HWND GetLeftFakeHwnd() {
+    return fake_hwnd_left_;
+  }
+
+  HWND GetRightFakeHwnd() {
+    return fake_hwnd_right_;
+  }
+
+ private:
+  static scoped_ptr<TestScreenWinInitializer> screen_win_initializer_;
+  static HWND fake_hwnd_left_;
+  static HWND fake_hwnd_right_;
+};
+
+scoped_ptr<TestScreenWinInitializer>
+ScreenWinTestTwoDisplays2x1xVirtualized::screen_win_initializer_;
+
+HWND ScreenWinTestTwoDisplays2x1xVirtualized::fake_hwnd_left_ = NULL;
+
+HWND ScreenWinTestTwoDisplays2x1xVirtualized::fake_hwnd_right_ = NULL;
+
+TEST_F(ScreenWinTestTwoDisplays2x1xVirtualized, GetDisplays) {
+  std::vector<gfx::Display> displays = GetScreen()->GetAllDisplays();
+  ASSERT_EQ(2u, displays.size());
+  EXPECT_EQ(gfx::Rect(0, 0, 1600, 800), displays[0].bounds());
+  EXPECT_EQ(gfx::Rect(0, 0, 1600, 750), displays[0].work_area());
+  EXPECT_EQ(gfx::Rect(3200, 0, 1920, 1200), displays[1].bounds());
+  EXPECT_EQ(gfx::Rect(3200, 0, 1920, 1200), displays[1].work_area());
+}
+
+TEST_F(ScreenWinTestTwoDisplays2x1xVirtualized, ScreenToDIPRects) {
+  HWND left_hwnd = GetLeftFakeHwnd();
+  EXPECT_EQ(gfx::Rect(0, 0, 25, 50),
+            ScreenWin::ScreenToDIPRect(left_hwnd, gfx::Rect(0, 0, 50, 100)));
+  EXPECT_EQ(gfx::Rect(126, 248, 21, 26),
+            ScreenWin::ScreenToDIPRect(left_hwnd, gfx::Rect(253, 496, 41, 52)));
+
+  HWND right_hwnd = GetRightFakeHwnd();
+  EXPECT_EQ(gfx::Rect(3200, 0, 100, 150),
+            ScreenWin::ScreenToDIPRect(right_hwnd,
+                                       gfx::Rect(6400, 0, 200, 300)));
+  EXPECT_EQ(gfx::Rect(3500, 248, 50, 100),
+            ScreenWin::ScreenToDIPRect(right_hwnd,
+                                       gfx::Rect(7000, 496, 100, 200)));
+}
+
+TEST_F(ScreenWinTestTwoDisplays2x1xVirtualized, DIPToScreenRects) {
+  HWND left_hwnd = GetLeftFakeHwnd();
+  EXPECT_EQ(gfx::Rect(0, 0, 50, 100),
+            ScreenWin::DIPToScreenRect(left_hwnd, gfx::Rect(0, 0, 25, 50)));
+  EXPECT_EQ(gfx::Rect(252, 496, 42, 52),
+            ScreenWin::DIPToScreenRect(left_hwnd, gfx::Rect(126, 248, 21, 26)));
+
+  HWND right_hwnd = GetRightFakeHwnd();
+  EXPECT_EQ(gfx::Rect(6400, 0, 200, 300),
+            ScreenWin::DIPToScreenRect(right_hwnd,
+                                       gfx::Rect(3200, 0, 100, 150)));
+  EXPECT_EQ(gfx::Rect(7000, 496, 100, 200),
+            ScreenWin::DIPToScreenRect(right_hwnd,
+                                       gfx::Rect(3500, 248, 50, 100)));
+}
+
+TEST_F(ScreenWinTestTwoDisplays2x1xVirtualized, ClientToDIPRects) {
+  HWND left_hwnd = GetLeftFakeHwnd();
+  EXPECT_EQ(gfx::Rect(0, 0, 25, 50),
+            ScreenWin::ClientToDIPRect(left_hwnd, gfx::Rect(0, 0, 50, 100)));
+  EXPECT_EQ(gfx::Rect(126, 248, 21, 26),
+            ScreenWin::ClientToDIPRect(left_hwnd, gfx::Rect(253, 496, 41, 52)));
+
+  HWND right_hwnd = GetRightFakeHwnd();
+  EXPECT_EQ(gfx::Rect(0, 0, 25, 50),
+            ScreenWin::ClientToDIPRect(right_hwnd, gfx::Rect(0, 0, 50, 100)));
+  EXPECT_EQ(gfx::Rect(126, 248, 21, 26),
+            ScreenWin::ClientToDIPRect(right_hwnd,
+                                       gfx::Rect(253, 496, 41, 52)));
+}
+
+TEST_F(ScreenWinTestTwoDisplays2x1xVirtualized, DIPToClientRects) {
+  HWND left_hwnd = GetLeftFakeHwnd();
+  EXPECT_EQ(gfx::Rect(0, 0, 50, 100),
+            ScreenWin::DIPToClientRect(left_hwnd, gfx::Rect(0, 0, 25, 50)));
+  EXPECT_EQ(gfx::Rect(252, 496, 42, 52),
+            ScreenWin::DIPToClientRect(left_hwnd, gfx::Rect(126, 248, 21, 26)));
+
+  HWND right_hwnd = GetRightFakeHwnd();
+  EXPECT_EQ(gfx::Rect(0, 0, 50, 100),
+            ScreenWin::DIPToClientRect(right_hwnd, gfx::Rect(0, 0, 25, 50)));
+  EXPECT_EQ(gfx::Rect(252, 496, 42, 52),
+            ScreenWin::DIPToClientRect(right_hwnd,
+                                       gfx::Rect(126, 248, 21, 26)));
+}
+
 }  // namespace gfx