content/browser/renderer_host/input/composited_scrolling_browsertest.cc - chromium/src - Git at Google

 // Copyright 2015 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 <utility>

 #include "base/bind.h"
 #include "base/command_line.h"
 #include "base/macros.h"
 #include "base/run_loop.h"
 #include "base/strings/utf_string_conversions.h"
 #include "build/build_config.h"
 #include "content/browser/renderer_host/input/synthetic_gesture.h"
 #include "content/browser/renderer_host/input/synthetic_smooth_scroll_gesture.h"
 #include "content/browser/renderer_host/render_widget_host_impl.h"
 #include "content/browser/web_contents/web_contents_impl.h"
 #include "content/common/input/synthetic_gesture_params.h"
 #include "content/common/input/synthetic_smooth_scroll_gesture_params.h"
 #include "content/public/browser/render_view_host.h"
 #include "content/public/common/content_switches.h"
 #include "content/public/test/browser_test_utils.h"
 #include "content/public/test/content_browser_test.h"
 #include "content/public/test/content_browser_test_utils.h"
 #include "content/public/test/test_utils.h"
 #include "content/shell/browser/shell.h"
 #include "ui/gfx/geometry/angle_conversions.h"

 namespace {

 const char kCompositedScrollingDataURL[] =
     "data:text/html;charset=utf-8,"
     "<!DOCTYPE html>"
     "<meta name='viewport' content='width=device-width'/>"
     "<style>"
     "#scroller {"
     "  width:500px;"
     "  height:500px;"
     "  overflow:scroll;"
     "  transform: rotateX(-30deg);"
     "}"

     "#content {"
     "  background-color:red;"
     "  width:1000px;"
     "  height:1000px;"
     "}"
     "</style>"
     "<div id='scroller'>"
     "  <div id='content'>"
     "  </div>"
     "</div>"
     "<script>"
     "  document.title='ready';"
     "</script>";

 }  // namespace

 namespace content {


 class CompositedScrollingBrowserTest : public ContentBrowserTest {
  public:
   CompositedScrollingBrowserTest() {}
   ~CompositedScrollingBrowserTest() override {}

   void SetUpCommandLine(base::CommandLine* cmd) override {
     cmd->AppendSwitch(switches::kEnablePreferCompositingToLCDText);
   }

   RenderWidgetHostImpl* GetWidgetHost() {
     return RenderWidgetHostImpl::From(
         shell()->web_contents()->GetRenderViewHost()->GetWidget());
   }

   void OnSyntheticGestureCompleted(SyntheticGesture::Result result) {
     EXPECT_EQ(SyntheticGesture::GESTURE_FINISHED, result);
     runner_->Quit();
   }

  protected:
   void LoadURL() {
     const GURL data_url(kCompositedScrollingDataURL);
     NavigateToURL(shell(), data_url);

     RenderWidgetHostImpl* host = GetWidgetHost();
     MainThreadFrameObserver observer(host);
     host->GetView()->SetSize(gfx::Size(400, 400));

     base::string16 ready_title(base::ASCIIToUTF16("ready"));
     TitleWatcher watcher(shell()->web_contents(), ready_title);
     ignore_result(watcher.WaitAndGetTitle());

     // We need to wait until at least one frame has been composited
     // otherwise the injection of the synthetic gestures may get
     // dropped because of MainThread/Impl thread sync of touch event
     // regions.
     observer.Wait();
   }

   // ContentBrowserTest:
   int ExecuteScriptAndExtractInt(const std::string& script) {
     int value = 0;
     EXPECT_TRUE(content::ExecuteScriptAndExtractInt(
         shell(), "domAutomationController.send(" + script + ")", &value));
     return value;
   }

   int GetScrollTop() {
     return ExecuteScriptAndExtractInt(
         "document.getElementById(\"scroller\").scrollTop");
   }

   // Generate touch events for a synthetic scroll from |point| for |distance|.
   // Returns the distance scrolled.
   int DoTouchScroll(const gfx::Point& point, const gfx::Vector2d& distance) {
     EXPECT_EQ(0, GetScrollTop());

     int scroll_height = ExecuteScriptAndExtractInt(
         "document.getElementById('scroller').scrollHeight");
     EXPECT_EQ(1000, scroll_height);

     SyntheticSmoothScrollGestureParams params;
     params.gesture_source_type = SyntheticGestureParams::TOUCH_INPUT;
     params.anchor = gfx::PointF(point);
     params.distances.push_back(-distance);

     runner_ = new MessageLoopRunner();

     std::unique_ptr<SyntheticSmoothScrollGesture> gesture(
         new SyntheticSmoothScrollGesture(params));
     GetWidgetHost()->QueueSyntheticGesture(
         std::move(gesture),
         base::BindOnce(
             &CompositedScrollingBrowserTest::OnSyntheticGestureCompleted,
             base::Unretained(this)));

     // Runs until we get the OnSyntheticGestureCompleted callback
     runner_->Run();
     runner_ = nullptr;

     return GetScrollTop();
   }

  private:
   scoped_refptr<MessageLoopRunner> runner_;

   DISALLOW_COPY_AND_ASSIGN(CompositedScrollingBrowserTest);
 };

 // Verify transforming a scroller doesn't prevent it from scrolling. See
 // crbug.com/543655 for a case where this was broken.
 // Disabled on MacOS because it doesn't support touch input.
 // Disabled on Android due to flakiness, see https://crbug.com/376668.
 // Flaky on Windows: crbug.com/804009
 #if defined(OS_MACOSX) || defined(OS_ANDROID) || defined(OS_WIN)
 #define MAYBE_Scroll3DTransformedScroller DISABLED_Scroll3DTransformedScroller
 #else
 #define MAYBE_Scroll3DTransformedScroller Scroll3DTransformedScroller
 #endif
 IN_PROC_BROWSER_TEST_F(CompositedScrollingBrowserTest,
                        MAYBE_Scroll3DTransformedScroller) {
   LoadURL();
   int scroll_distance =
       DoTouchScroll(gfx::Point(50, 150), gfx::Vector2d(0, 100));
   // The scroll distance is increased due to the rotation of the scroller.
   EXPECT_EQ(std::floor(100 / std::cos(gfx::DegToRad(30.f))) - 1,
             scroll_distance);
 }

 }  // namespace content
	// Copyright 2015 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 <utility>

	#include "base/bind.h"
	#include "base/command_line.h"
	#include "base/macros.h"
	#include "base/run_loop.h"
	#include "base/strings/utf_string_conversions.h"
	#include "build/build_config.h"
	#include "content/browser/renderer_host/input/synthetic_gesture.h"
	#include "content/browser/renderer_host/input/synthetic_smooth_scroll_gesture.h"
	#include "content/browser/renderer_host/render_widget_host_impl.h"
	#include "content/browser/web_contents/web_contents_impl.h"
	#include "content/common/input/synthetic_gesture_params.h"
	#include "content/common/input/synthetic_smooth_scroll_gesture_params.h"
	#include "content/public/browser/render_view_host.h"
	#include "content/public/common/content_switches.h"
	#include "content/public/test/browser_test_utils.h"
	#include "content/public/test/content_browser_test.h"
	#include "content/public/test/content_browser_test_utils.h"
	#include "content/public/test/test_utils.h"
	#include "content/shell/browser/shell.h"
	#include "ui/gfx/geometry/angle_conversions.h"

	namespace {

	const char kCompositedScrollingDataURL[] =
	"data:text/html;charset=utf-8,"
	"<!DOCTYPE html>"
	"<meta name='viewport' content='width=device-width'/>"
	"<style>"
	"#scroller {"
	" width:500px;"
	" height:500px;"
	" overflow:scroll;"
	" transform: rotateX(-30deg);"
	"}"

	"#content {"
	" background-color:red;"
	" width:1000px;"
	" height:1000px;"
	"}"
	"</style>"
	"<div id='scroller'>"
	" <div id='content'>"
	" </div>"
	"</div>"
	"<script>"
	" document.title='ready';"
	"</script>";

	} // namespace

	namespace content {


	class CompositedScrollingBrowserTest : public ContentBrowserTest {
	public:
	CompositedScrollingBrowserTest() {}
	~CompositedScrollingBrowserTest() override {}

	void SetUpCommandLine(base::CommandLine* cmd) override {
	cmd->AppendSwitch(switches::kEnablePreferCompositingToLCDText);
	}

	RenderWidgetHostImpl* GetWidgetHost() {
	return RenderWidgetHostImpl::From(
	shell()->web_contents()->GetRenderViewHost()->GetWidget());
	}

	void OnSyntheticGestureCompleted(SyntheticGesture::Result result) {
	EXPECT_EQ(SyntheticGesture::GESTURE_FINISHED, result);
	runner_->Quit();
	}

	protected:
	void LoadURL() {
	const GURL data_url(kCompositedScrollingDataURL);
	NavigateToURL(shell(), data_url);

	RenderWidgetHostImpl* host = GetWidgetHost();
	MainThreadFrameObserver observer(host);
	host->GetView()->SetSize(gfx::Size(400, 400));

	base::string16 ready_title(base::ASCIIToUTF16("ready"));
	TitleWatcher watcher(shell()->web_contents(), ready_title);
	ignore_result(watcher.WaitAndGetTitle());

	// We need to wait until at least one frame has been composited
	// otherwise the injection of the synthetic gestures may get
	// dropped because of MainThread/Impl thread sync of touch event
	// regions.
	observer.Wait();
	}

	// ContentBrowserTest:
	int ExecuteScriptAndExtractInt(const std::string& script) {
	int value = 0;
	EXPECT_TRUE(content::ExecuteScriptAndExtractInt(
	shell(), "domAutomationController.send(" + script + ")", &value));
	return value;
	}

	int GetScrollTop() {
	return ExecuteScriptAndExtractInt(
	"document.getElementById(\"scroller\").scrollTop");
	}

	// Generate touch events for a synthetic scroll from \|point\| for \|distance\|.
	// Returns the distance scrolled.
	int DoTouchScroll(const gfx::Point& point, const gfx::Vector2d& distance) {
	EXPECT_EQ(0, GetScrollTop());

	int scroll_height = ExecuteScriptAndExtractInt(
	"document.getElementById('scroller').scrollHeight");
	EXPECT_EQ(1000, scroll_height);

	SyntheticSmoothScrollGestureParams params;
	params.gesture_source_type = SyntheticGestureParams::TOUCH_INPUT;
	params.anchor = gfx::PointF(point);
	params.distances.push_back(-distance);

	runner_ = new MessageLoopRunner();

	std::unique_ptr<SyntheticSmoothScrollGesture> gesture(
	new SyntheticSmoothScrollGesture(params));
	GetWidgetHost()->QueueSyntheticGesture(
	std::move(gesture),
	base::BindOnce(
	&CompositedScrollingBrowserTest::OnSyntheticGestureCompleted,
	base::Unretained(this)));

	// Runs until we get the OnSyntheticGestureCompleted callback
	runner_->Run();
	runner_ = nullptr;

	return GetScrollTop();
	}

	private:
	scoped_refptr<MessageLoopRunner> runner_;

	DISALLOW_COPY_AND_ASSIGN(CompositedScrollingBrowserTest);
	};

	// Verify transforming a scroller doesn't prevent it from scrolling. See
	// crbug.com/543655 for a case where this was broken.
	// Disabled on MacOS because it doesn't support touch input.
	// Disabled on Android due to flakiness, see https://crbug.com/376668.
	// Flaky on Windows: crbug.com/804009
	#if defined(OS_MACOSX) \|\| defined(OS_ANDROID) \|\| defined(OS_WIN)
	#define MAYBE_Scroll3DTransformedScroller DISABLED_Scroll3DTransformedScroller
	#else
	#define MAYBE_Scroll3DTransformedScroller Scroll3DTransformedScroller
	#endif
	IN_PROC_BROWSER_TEST_F(CompositedScrollingBrowserTest,
	MAYBE_Scroll3DTransformedScroller) {
	LoadURL();
	int scroll_distance =
	DoTouchScroll(gfx::Point(50, 150), gfx::Vector2d(0, 100));
	// The scroll distance is increased due to the rotation of the scroller.
	EXPECT_EQ(std::floor(100 / std::cos(gfx::DegToRad(30.f))) - 1,
	scroll_distance);
	}

	} // namespace content