chrome/browser/chromeos/accessibility/magnification_controller_browsertest.cc - chromium/src - Git at Google

 // Copyright 2014 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 <string>

 #include "ash/magnifier/magnification_controller.h"
 #include "ash/shell.h"
 #include "base/command_line.h"
 #include "base/macros.h"
 #include "base/run_loop.h"
 #include "base/timer/timer.h"
 #include "chrome/browser/browser_process.h"
 #include "chrome/browser/chromeos/accessibility/magnification_manager.h"
 #include "chrome/browser/ui/browser.h"
 #include "chrome/browser/ui/tabs/tab_strip_model.h"
 #include "chrome/common/chrome_switches.h"
 #include "chrome/test/base/in_process_browser_test.h"
 #include "chrome/test/base/ui_test_utils.h"
 #include "content/public/browser/render_widget_host_view.h"
 #include "content/public/browser/web_contents.h"
 #include "content/public/test/browser_test_utils.h"
 #include "testing/gtest/include/gtest/gtest.h"
 #include "ui/wm/core/coordinate_conversion.h"

 namespace chromeos {

 namespace {

 const char kDataURIPrefix[] = "data:text/html;charset=utf-8,";
 const char kTestHtmlContent1[] =
     "<body style=\"margin-top:0;margin-left:0\">"
     "<button type=\"button\" name=\"test_button_1\" id=\"test_button\" "
     "style=\"margin-left:200;margin-top:200;width:100;height:50\">"
     "Big Button 1</button>"
     "</body>";
 const char kTestHtmlContent2[] =
     "<body style=\"margin-top:0;margin-left:0\">"
     "<button type=\"button\" name=\"test_button_1\" id=\"test_button\" "
     "style=\"margin-left:200;margin-top:200;width:100;height:50\">"
     "Big Button 1</button>"
     "</body>";

 aura::Window* GetRootWindow() {
   return ash::Shell::GetPrimaryRootWindow();
 }

 ash::MagnificationController* GetMagnificationController() {
   return ash::Shell::Get()->magnification_controller();
 }

 bool IsMagnifierEnabled() {
   return MagnificationManager::Get()->IsMagnifierEnabled();
 }

 void SetMagnifierEnabled(bool enabled) {
   MagnificationManager::Get()->SetMagnifierEnabled(true);
 }

 void MoveMagnifierWindow(int x, int y) {
   GetMagnificationController()->MoveWindow(x, y, false);
 }

 gfx::Rect GetViewPort() {
   return GetMagnificationController()->GetViewportRect();
 }

 class MagnifierAnimationWaiter {
  public:
   explicit MagnifierAnimationWaiter(ash::MagnificationController* controller)
       : controller_(controller) {}

   void Wait() {
     base::RepeatingTimer check_timer;
     check_timer.Start(FROM_HERE, base::TimeDelta::FromMilliseconds(10), this,
                       &MagnifierAnimationWaiter::OnTimer);
     runner_ = new content::MessageLoopRunner;
     runner_->Run();
   }

  private:
   void OnTimer() {
     DCHECK(runner_.get());
     if (!controller_->IsOnAnimationForTesting()) {
       runner_->Quit();
     }
   }

   ash::MagnificationController* controller_;  // not owned
   scoped_refptr<content::MessageLoopRunner> runner_;
   DISALLOW_COPY_AND_ASSIGN(MagnifierAnimationWaiter);
 };

 }  // namespace

 class MagnificationControllerTest : public InProcessBrowserTest {
  protected:
   MagnificationControllerTest() {}
   ~MagnificationControllerTest() override {}

   void SetUpCommandLine(base::CommandLine* command_line) override {
     // Make screens sufficiently wide to host 2 browsers side by side.
     command_line->AppendSwitchASCII("ash-host-window-bounds", "1200x800");
   }

   void SetUpOnMainThread() override {
     SetMagnifierEnabled(true);

     // Confirms that magnifier is enabled.
     EXPECT_TRUE(IsMagnifierEnabled());
     EXPECT_EQ(2.0f, GetMagnificationController()->GetScale());

     // MagnificationController moves the magnifier window with animation
     // when the magnifier is set to be enabled. It will move the mouse cursor
     // when the animation completes. Wait until the animation completes, so that
     // the mouse movement won't affect the position of magnifier window later.
     MagnifierAnimationWaiter waiter(GetMagnificationController());
     waiter.Wait();
     base::RunLoop().RunUntilIdle();
   }

   content::WebContents* GetWebContents() {
     return browser()->tab_strip_model()->GetActiveWebContents();
   }

   void ExecuteScriptAndExtractInt(const std::string& script, int* result) {
     ASSERT_TRUE(content::ExecuteScriptAndExtractInt(
         GetWebContents(),
         "window.domAutomationController.send(" + script + ");", result));
   }

   void ExecuteScript(const std::string& script) {
     ASSERT_TRUE(content::ExecuteScript(GetWebContents(), script));
   }

   gfx::Rect GetControlBoundsInRoot(const std::string& field_id) {
     ExecuteScript("var element = document.getElementById('" + field_id +
                   "');"
                   "var bounds = element.getBoundingClientRect();");
     int top, left, width, height;
     ExecuteScriptAndExtractInt("bounds.top", &top);
     ExecuteScriptAndExtractInt("bounds.left", &left);
     ExecuteScriptAndExtractInt("bounds.width", &width);
     ExecuteScriptAndExtractInt("bounds.height", &height);
     gfx::Rect rect(top, left, width, height);

     content::RenderWidgetHostView* view =
         GetWebContents()->GetRenderWidgetHostView();
     gfx::Rect view_bounds_in_screen = view->GetViewBounds();
     gfx::Point origin = rect.origin();
     origin.Offset(view_bounds_in_screen.x(), view_bounds_in_screen.y());
     gfx::Rect rect_in_screen(origin.x(), origin.y(), rect.width(),
                              rect.height());
     ::wm::ConvertRectFromScreen(GetRootWindow(), &rect_in_screen);
     return rect_in_screen;
   }

   void SetFocusOnElement(const std::string& element_id) {
     ExecuteScript("document.getElementById('" + element_id + "').focus();");
   }

  private:
   DISALLOW_COPY_AND_ASSIGN(MagnificationControllerTest);
 };

 IN_PROC_BROWSER_TEST_F(MagnificationControllerTest,
                        FollowFocusOnWebPageButtonNotIntersected) {
   DCHECK(IsMagnifierEnabled());
   ASSERT_NO_FATAL_FAILURE(ui_test_utils::NavigateToURL(
       browser(), GURL(std::string(kDataURIPrefix) + kTestHtmlContent1)));

   // Move the magnifier window to not intersect with the button.
   const gfx::Rect button_bounds = GetControlBoundsInRoot("test_button");
   MoveMagnifierWindow(button_bounds.right() + 100,
                       button_bounds.bottom() + 100);
   EXPECT_FALSE(GetViewPort().Intersects(button_bounds));

   // Set the focus on the button.
   SetFocusOnElement("test_button");

   // Verify the magnifier window is moved to contain the focused button,
   // and the button is centered at the magnifier window.
   EXPECT_TRUE(GetViewPort().Contains(button_bounds));
   EXPECT_EQ(GetViewPort().CenterPoint(), button_bounds.CenterPoint());
 }

 IN_PROC_BROWSER_TEST_F(MagnificationControllerTest,
                        FollowFocusOnWebPageButtonIntersected) {
   DCHECK(IsMagnifierEnabled());
   ASSERT_NO_FATAL_FAILURE(ui_test_utils::NavigateToURL(
       browser(), GURL(std::string(kDataURIPrefix) + kTestHtmlContent1)));

   // Move the magnifier window to intersect with the button.
   const gfx::Rect button_bounds = GetControlBoundsInRoot("test_button");
   MoveMagnifierWindow(button_bounds.CenterPoint().x(),
                       button_bounds.CenterPoint().y());
   EXPECT_TRUE(GetViewPort().Intersects(button_bounds));

   // Set the focus on the button.
   SetFocusOnElement("test_button");

   // Verify the magnifier window is moved to contain the focused button,
   // and the button is centered at the magnifier window.
   EXPECT_TRUE(GetViewPort().Contains(button_bounds));
   EXPECT_EQ(GetViewPort().CenterPoint(), button_bounds.CenterPoint());
 }

 IN_PROC_BROWSER_TEST_F(MagnificationControllerTest,
                        FollowFocusOnWebButtonContained) {
   DCHECK(IsMagnifierEnabled());
   ASSERT_NO_FATAL_FAILURE(ui_test_utils::NavigateToURL(
       browser(), GURL(std::string(kDataURIPrefix) + kTestHtmlContent2)));

   // Move magnifier window to contain the button.
   const gfx::Rect button_bounds = GetControlBoundsInRoot("test_button");
   MoveMagnifierWindow(button_bounds.x() - 100, button_bounds.y() - 100);
   const gfx::Rect view_port_before_focus = GetViewPort();
   EXPECT_TRUE(view_port_before_focus.Contains(button_bounds));

   // Set the focus on the button.
   SetFocusOnElement("test_button");

   // Verify the magnifier window is not moved and still contains the button.
   const gfx::Rect view_port_after_focus = GetViewPort();
   EXPECT_TRUE(view_port_after_focus.Contains(button_bounds));
   EXPECT_EQ(view_port_before_focus, view_port_after_focus);
 }

 }  // namespace chromeos
	// Copyright 2014 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 <string>

	#include "ash/magnifier/magnification_controller.h"
	#include "ash/shell.h"
	#include "base/command_line.h"
	#include "base/macros.h"
	#include "base/run_loop.h"
	#include "base/timer/timer.h"
	#include "chrome/browser/browser_process.h"
	#include "chrome/browser/chromeos/accessibility/magnification_manager.h"
	#include "chrome/browser/ui/browser.h"
	#include "chrome/browser/ui/tabs/tab_strip_model.h"
	#include "chrome/common/chrome_switches.h"
	#include "chrome/test/base/in_process_browser_test.h"
	#include "chrome/test/base/ui_test_utils.h"
	#include "content/public/browser/render_widget_host_view.h"
	#include "content/public/browser/web_contents.h"
	#include "content/public/test/browser_test_utils.h"
	#include "testing/gtest/include/gtest/gtest.h"
	#include "ui/wm/core/coordinate_conversion.h"

	namespace chromeos {

	namespace {

	const char kDataURIPrefix[] = "data:text/html;charset=utf-8,";
	const char kTestHtmlContent1[] =
	"<body style=\"margin-top:0;margin-left:0\">"
	"<button type=\"button\" name=\"test_button_1\" id=\"test_button\" "
	"style=\"margin-left:200;margin-top:200;width:100;height:50\">"
	"Big Button 1</button>"
	"</body>";
	const char kTestHtmlContent2[] =
	"<body style=\"margin-top:0;margin-left:0\">"
	"<button type=\"button\" name=\"test_button_1\" id=\"test_button\" "
	"style=\"margin-left:200;margin-top:200;width:100;height:50\">"
	"Big Button 1</button>"
	"</body>";

	aura::Window* GetRootWindow() {
	return ash::Shell::GetPrimaryRootWindow();
	}

	ash::MagnificationController* GetMagnificationController() {
	return ash::Shell::Get()->magnification_controller();
	}

	bool IsMagnifierEnabled() {
	return MagnificationManager::Get()->IsMagnifierEnabled();
	}

	void SetMagnifierEnabled(bool enabled) {
	MagnificationManager::Get()->SetMagnifierEnabled(true);
	}

	void MoveMagnifierWindow(int x, int y) {
	GetMagnificationController()->MoveWindow(x, y, false);
	}

	gfx::Rect GetViewPort() {
	return GetMagnificationController()->GetViewportRect();
	}

	class MagnifierAnimationWaiter {
	public:
	explicit MagnifierAnimationWaiter(ash::MagnificationController* controller)
	: controller_(controller) {}

	void Wait() {
	base::RepeatingTimer check_timer;
	check_timer.Start(FROM_HERE, base::TimeDelta::FromMilliseconds(10), this,
	&MagnifierAnimationWaiter::OnTimer);
	runner_ = new content::MessageLoopRunner;
	runner_->Run();
	}

	private:
	void OnTimer() {
	DCHECK(runner_.get());
	if (!controller_->IsOnAnimationForTesting()) {
	runner_->Quit();
	}
	}

	ash::MagnificationController* controller_; // not owned
	scoped_refptr<content::MessageLoopRunner> runner_;
	DISALLOW_COPY_AND_ASSIGN(MagnifierAnimationWaiter);
	};

	} // namespace

	class MagnificationControllerTest : public InProcessBrowserTest {
	protected:
	MagnificationControllerTest() {}
	~MagnificationControllerTest() override {}

	void SetUpCommandLine(base::CommandLine* command_line) override {
	// Make screens sufficiently wide to host 2 browsers side by side.
	command_line->AppendSwitchASCII("ash-host-window-bounds", "1200x800");
	}

	void SetUpOnMainThread() override {
	SetMagnifierEnabled(true);

	// Confirms that magnifier is enabled.
	EXPECT_TRUE(IsMagnifierEnabled());
	EXPECT_EQ(2.0f, GetMagnificationController()->GetScale());

	// MagnificationController moves the magnifier window with animation
	// when the magnifier is set to be enabled. It will move the mouse cursor
	// when the animation completes. Wait until the animation completes, so that
	// the mouse movement won't affect the position of magnifier window later.
	MagnifierAnimationWaiter waiter(GetMagnificationController());
	waiter.Wait();
	base::RunLoop().RunUntilIdle();
	}

	content::WebContents* GetWebContents() {
	return browser()->tab_strip_model()->GetActiveWebContents();
	}

	void ExecuteScriptAndExtractInt(const std::string& script, int* result) {
	ASSERT_TRUE(content::ExecuteScriptAndExtractInt(
	GetWebContents(),
	"window.domAutomationController.send(" + script + ");", result));
	}

	void ExecuteScript(const std::string& script) {
	ASSERT_TRUE(content::ExecuteScript(GetWebContents(), script));
	}

	gfx::Rect GetControlBoundsInRoot(const std::string& field_id) {
	ExecuteScript("var element = document.getElementById('" + field_id +
	"');"
	"var bounds = element.getBoundingClientRect();");
	int top, left, width, height;
	ExecuteScriptAndExtractInt("bounds.top", &top);
	ExecuteScriptAndExtractInt("bounds.left", &left);
	ExecuteScriptAndExtractInt("bounds.width", &width);
	ExecuteScriptAndExtractInt("bounds.height", &height);
	gfx::Rect rect(top, left, width, height);

	content::RenderWidgetHostView* view =
	GetWebContents()->GetRenderWidgetHostView();
	gfx::Rect view_bounds_in_screen = view->GetViewBounds();
	gfx::Point origin = rect.origin();
	origin.Offset(view_bounds_in_screen.x(), view_bounds_in_screen.y());
	gfx::Rect rect_in_screen(origin.x(), origin.y(), rect.width(),
	rect.height());
	::wm::ConvertRectFromScreen(GetRootWindow(), &rect_in_screen);
	return rect_in_screen;
	}

	void SetFocusOnElement(const std::string& element_id) {
	ExecuteScript("document.getElementById('" + element_id + "').focus();");
	}

	private:
	DISALLOW_COPY_AND_ASSIGN(MagnificationControllerTest);
	};

	IN_PROC_BROWSER_TEST_F(MagnificationControllerTest,
	FollowFocusOnWebPageButtonNotIntersected) {
	DCHECK(IsMagnifierEnabled());
	ASSERT_NO_FATAL_FAILURE(ui_test_utils::NavigateToURL(
	browser(), GURL(std::string(kDataURIPrefix) + kTestHtmlContent1)));

	// Move the magnifier window to not intersect with the button.
	const gfx::Rect button_bounds = GetControlBoundsInRoot("test_button");
	MoveMagnifierWindow(button_bounds.right() + 100,
	button_bounds.bottom() + 100);
	EXPECT_FALSE(GetViewPort().Intersects(button_bounds));

	// Set the focus on the button.
	SetFocusOnElement("test_button");

	// Verify the magnifier window is moved to contain the focused button,
	// and the button is centered at the magnifier window.
	EXPECT_TRUE(GetViewPort().Contains(button_bounds));
	EXPECT_EQ(GetViewPort().CenterPoint(), button_bounds.CenterPoint());
	}

	IN_PROC_BROWSER_TEST_F(MagnificationControllerTest,
	FollowFocusOnWebPageButtonIntersected) {
	DCHECK(IsMagnifierEnabled());
	ASSERT_NO_FATAL_FAILURE(ui_test_utils::NavigateToURL(
	browser(), GURL(std::string(kDataURIPrefix) + kTestHtmlContent1)));

	// Move the magnifier window to intersect with the button.
	const gfx::Rect button_bounds = GetControlBoundsInRoot("test_button");
	MoveMagnifierWindow(button_bounds.CenterPoint().x(),
	button_bounds.CenterPoint().y());
	EXPECT_TRUE(GetViewPort().Intersects(button_bounds));

	// Set the focus on the button.
	SetFocusOnElement("test_button");

	// Verify the magnifier window is moved to contain the focused button,
	// and the button is centered at the magnifier window.
	EXPECT_TRUE(GetViewPort().Contains(button_bounds));
	EXPECT_EQ(GetViewPort().CenterPoint(), button_bounds.CenterPoint());
	}

	IN_PROC_BROWSER_TEST_F(MagnificationControllerTest,
	FollowFocusOnWebButtonContained) {
	DCHECK(IsMagnifierEnabled());
	ASSERT_NO_FATAL_FAILURE(ui_test_utils::NavigateToURL(
	browser(), GURL(std::string(kDataURIPrefix) + kTestHtmlContent2)));

	// Move magnifier window to contain the button.
	const gfx::Rect button_bounds = GetControlBoundsInRoot("test_button");
	MoveMagnifierWindow(button_bounds.x() - 100, button_bounds.y() - 100);
	const gfx::Rect view_port_before_focus = GetViewPort();
	EXPECT_TRUE(view_port_before_focus.Contains(button_bounds));

	// Set the focus on the button.
	SetFocusOnElement("test_button");

	// Verify the magnifier window is not moved and still contains the button.
	const gfx::Rect view_port_after_focus = GetViewPort();
	EXPECT_TRUE(view_port_after_focus.Contains(button_bounds));
	EXPECT_EQ(view_port_before_focus, view_port_after_focus);
	}

	} // namespace chromeos