Create a mirror window.

ash/display/display_manager_unittest.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "ash/display/display_manager.h"
 
 #include "ash/display/display_controller.h"
 #include "ash/screen_ash.h"
 #include "ash/shell.h"
 #include "ash/test/ash_test_base.h"
 #include "ash/test/display_manager_test_api.h"
+#include "ash/test/mirror_window_test_api.h"
 #include "base/format_macros.h"
 #include "base/stringprintf.h"
 #include "ui/aura/env.h"
 #include "ui/aura/root_window.h"
 #include "ui/aura/test/event_generator.h"
 #include "ui/aura/window_observer.h"
 #include "ui/gfx/display_observer.h"
 #include "ui/gfx/display.h"
 
 namespace ash {
@@ skipping 683 matching lines @@
   UpdateDisplay("100x200/r,300x400/l");
   EXPECT_EQ("1,1 100x200",
             GetDisplayInfoAt(0).bounds_in_pixel().ToString());
   EXPECT_EQ("200x100",
             GetDisplayInfoAt(0).size_in_pixel().ToString());
 
   EXPECT_EQ("1,201 300x400",
             GetDisplayInfoAt(1).bounds_in_pixel().ToString());
   EXPECT_EQ("400x300",
             GetDisplayInfoAt(1).size_in_pixel().ToString());
+  reset();
   UpdateDisplay("100x200/b,300x400");
+  EXPECT_EQ("2 0 0", GetCountSummary());
+  reset();
+
   EXPECT_EQ("1,1 100x200",
             GetDisplayInfoAt(0).bounds_in_pixel().ToString());
   EXPECT_EQ("100x200",
             GetDisplayInfoAt(0).size_in_pixel().ToString());
 
   EXPECT_EQ("1,201 300x400",
             GetDisplayInfoAt(1).bounds_in_pixel().ToString());
   EXPECT_EQ("300x400",
             GetDisplayInfoAt(1).size_in_pixel().ToString());
+
+  UpdateDisplay("200x200");
+  EXPECT_EQ("1 0 1", GetCountSummary());
+  reset();
+
+  UpdateDisplay("200x200/l");
+  EXPECT_EQ("1 0 0", GetCountSummary());
 }
 
 TEST_F(DisplayManagerTest, UIScale) {
   UpdateDisplay("1280x800");
   int64 display_id = Shell::GetScreen()->GetPrimaryDisplay().id();
   display_manager()->SetDisplayUIScale(display_id, 1.125f);
   EXPECT_EQ(1.0, GetDisplayInfoAt(0).ui_scale());
   display_manager()->SetDisplayUIScale(display_id, 0.8f);
   EXPECT_EQ(1.0f, GetDisplayInfoAt(0).ui_scale());
   display_manager()->SetDisplayUIScale(display_id, 0.75f);
@@ skipping 97 matching lines @@
   EXPECT_EQ("150,225", env->last_mouse_location().ToString());
 
   // Test on 2nd display.
   UpdateDisplay("600x400,400x300*2");
   generator2.MoveMouseToInHost(200, 100);
   EXPECT_EQ("700,50", env->last_mouse_location().ToString());
   UpdateDisplay("600x400,400x300*2@1.5");
   EXPECT_EQ("750,75", env->last_mouse_location().ToString());
 }
 
+TEST_F(DisplayManagerTest, SoftwareMirroring) {

[James Cook, 2013/05/21 08:07:41]

Hooray, new code has a new test!

+  UpdateDisplay("300x400,400x500");
+
+  test::MirrorWindowTestApi test_api;
+  EXPECT_EQ(NULL, test_api.GetRootWindow());
+
+  DisplayManager* display_manager = Shell::GetInstance()->display_manager();
+  display_manager->SetSoftwareMirroring(true);
+  display_manager->UpdateDisplays();
+  EXPECT_EQ(1U, display_manager->GetNumDisplays());
+  EXPECT_EQ("0,0 300x400",
+            Shell::GetScreen()->GetPrimaryDisplay().bounds().ToString());
+  EXPECT_EQ("400x500", test_api.GetRootWindow()->GetHostSize().ToString());
+  EXPECT_TRUE(display_manager->IsMirrored());
+
+  display_manager->SetMirrorMode(false);
+  EXPECT_EQ(NULL, test_api.GetRootWindow());
+  EXPECT_EQ(2U, display_manager->GetNumDisplays());
+  EXPECT_FALSE(display_manager->IsMirrored());
+}
+
 }  // namespace internal
 }  // namespace ash