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// Copyright 2019 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include <memory>
#include <tuple>
#include "base/functional/bind.h"
#include "base/functional/callback.h"
#include "base/run_loop.h"
#include "base/task/single_thread_task_runner.h"
#include "base/test/run_until.h"
#include "base/test/test_timeouts.h"
#include "build/build_config.h"
#include "cc/base/switches.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.h"
#include "content/common/input/synthetic_gesture_params.h"
#include "content/common/input/synthetic_smooth_scroll_gesture.h"
#include "content/common/input/synthetic_smooth_scroll_gesture_params.h"
#include "content/public/browser/render_view_host.h"
#include "content/public/browser/render_widget_host.h"
#include "content/public/browser/render_widget_host_view.h"
#include "content/public/browser/web_contents.h"
#include "content/public/test/browser_test.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/hit_test_region_observer.h"
#include "content/public/test/test_utils.h"
#include "content/shell/browser/shell.h"
#include "third_party/blink/public/common/input/web_input_event.h"
namespace content {
class SyntheticInputTest : public ContentBrowserTest {
public:
SyntheticInputTest() = default;
void SetUpCommandLine(base::CommandLine* command_line) override {
command_line->AppendSwitch(switches::kEnableGpuBenchmarking);
}
RenderWidgetHostImpl* GetRenderWidgetHost() const {
return RenderWidgetHostImpl::From(shell()
->web_contents()
->GetPrimaryMainFrame()
->GetRenderViewHost()
->GetWidget());
}
void LoadURL(const char* url) {
const GURL data_url(url);
EXPECT_TRUE(NavigateToURL(shell(), data_url));
RenderWidgetHostImpl* host = GetRenderWidgetHost();
HitTestRegionObserver observer(GetRenderWidgetHost()->GetFrameSinkId());
host->GetView()->SetSize(gfx::Size(400, 400));
std::u16string ready_title(u"ready");
TitleWatcher watcher(shell()->web_contents(), ready_title);
std::ignore = watcher.WaitAndGetTitle();
// Wait for the hit test data to be ready after initiating URL loading
// before returning
observer.WaitForHitTestData();
}
void OnSyntheticGestureCompleted(SyntheticGesture::Result result) {
EXPECT_EQ(SyntheticGesture::GESTURE_FINISHED, result);
runner_->Quit();
}
protected:
std::unique_ptr<base::RunLoop> runner_;
};
class GestureScrollObserver : public RenderWidgetHost::InputEventObserver {
public:
void OnInputEvent(const RenderWidgetHost& widget,
const blink::WebInputEvent& event) override {
if (event.GetType() == blink::WebInputEvent::Type::kGestureScrollBegin)
gesture_scroll_seen_ = true;
}
bool HasSeenGestureScrollBegin() const { return gesture_scroll_seen_; }
bool gesture_scroll_seen_ = false;
};
// This test checks that we destroying a render widget host with an ongoing
// gesture doesn't cause lifetime issues. Namely, that the gesture
// CompletionCallback isn't destroyed before being called or the Mojo pipe
// being closed.
IN_PROC_BROWSER_TEST_F(SyntheticInputTest, DestroyWidgetWithOngoingGesture) {
EXPECT_TRUE(NavigateToURL(shell(), GURL("about:blank")));
EXPECT_TRUE(WaitForLoadStop(shell()->web_contents()));
GestureScrollObserver gesture_observer;
GetRenderWidgetHost()->AddInputEventObserver(&gesture_observer);
// By starting a gesture, there's a Mojo callback that the renderer is
// waiting on the browser to resolve. If the browser is shutdown before
// ACKing the callback or closing the channel, we'll DCHECK.
ASSERT_TRUE(
ExecJs(shell()->web_contents(),
"chrome.gpuBenchmarking.smoothScrollByXY(0, 10000, ()=>{}, "
"100, 100, chrome.gpuBenchmarking.TOUCH_INPUT);"));
EXPECT_TRUE(base::test::RunUntil(
[&]() { return gesture_observer.HasSeenGestureScrollBegin(); }));
shell()->Close();
}
// This test ensures that synthetic wheel scrolling works on all platforms.
// Disabled for flakiness on Android (crbug.com/1103731).
#if BUILDFLAG(IS_ANDROID)
#define MAYBE_SmoothScrollWheel DISABLED_SmoothScrollWheel
#else
#define MAYBE_SmoothScrollWheel SmoothScrollWheel
#endif // BUILDFLAG(IS_ANDROID)
IN_PROC_BROWSER_TEST_F(SyntheticInputTest, MAYBE_SmoothScrollWheel) {
LoadURL(R"HTML(
data:text/html;charset=utf-8,
<!DOCTYPE html>
<meta name='viewport' content='width=device-width'>
<style>
body {
width: 10px;
height: 2000px;
}
</style>
<script>
document.title = 'ready';
</script>
)HTML");
// Note: 256 is precisely chosen since Android's minimum granularity is 64px.
// All other platforms can specify the delta per-pixel.
const int scroll_delta = 256;
SyntheticSmoothScrollGestureParams params;
params.gesture_source_type = content::mojom::GestureSourceType::kMouseInput;
params.anchor = gfx::PointF(1, 1);
params.distances.push_back(gfx::Vector2d(0, -scroll_delta));
// Use a speed that's fast enough that the entire scroll occurs in a single
// GSU, avoiding precision loss. SyntheticGestures can lose delta over time
// in slower scrolls on some platforms.
params.speed_in_pixels_s = 10000000.f;
// Use PrecisePixel to avoid animating.
params.granularity = ui::ScrollGranularity::kScrollByPrecisePixel;
runner_ = std::make_unique<base::RunLoop>();
std::unique_ptr<SyntheticSmoothScrollGesture> gesture(
new SyntheticSmoothScrollGesture(params));
GetRenderWidgetHost()->QueueSyntheticGesture(
std::move(gesture),
base::BindOnce(&SyntheticInputTest::OnSyntheticGestureCompleted,
base::Unretained(this)));
// Run until we get the OnSyntheticGestureCompleted callback
runner_->Run();
runner_.reset();
EXPECT_EQ(scroll_delta, EvalJs(shell()->web_contents(),
"document.scrollingElement.scrollTop"));
}
// This test ensures that slow synthetic wheel scrolling does not lose precision
// over time.
// https://crbug.com/1103731. Flaky on Android bots.
// https://crbug.com/1086334. Flaky on all desktop bots, but maybe for a
// different reason.
IN_PROC_BROWSER_TEST_F(SyntheticInputTest, DISABLED_SlowSmoothScrollWheel) {
LoadURL(R"HTML(
data:text/html;charset=utf-8,
<!DOCTYPE html>
<meta name='viewport' content='width=device-width'>
<style>
body {
width: 10px;
height: 2000px;
}
</style>
<script>
document.title = 'ready';
</script>
)HTML");
// Note: 1024 is precisely chosen since Android's minimum granularity is 64px.
// All other platforms can specify the delta per-pixel.
const int scroll_delta = 1024;
SyntheticSmoothScrollGestureParams params;
params.gesture_source_type = content::mojom::GestureSourceType::kMouseInput;
params.anchor = gfx::PointF(1, 1);
params.distances.push_back(gfx::Vector2d(0, -scroll_delta));
// Use a speed that's slow enough that it requires the browser to require
// multiple wheel-events to be dispatched, so that precision is needed to
// scroll the correct amount.
params.speed_in_pixels_s = 1000.f;
// Use PrecisePixel to avoid animating.
params.granularity = ui::ScrollGranularity::kScrollByPrecisePixel;
runner_ = std::make_unique<base::RunLoop>();
auto* web_contents = shell()->web_contents();
RenderFrameSubmissionObserver scroll_offset_wait(web_contents);
std::unique_ptr<SyntheticSmoothScrollGesture> gesture(
new SyntheticSmoothScrollGesture(params));
GetRenderWidgetHost()->QueueSyntheticGesture(
std::move(gesture),
base::BindOnce(&SyntheticInputTest::OnSyntheticGestureCompleted,
base::Unretained(this)));
float device_scale_factor =
web_contents->GetRenderWidgetHostView()->GetDeviceScaleFactor();
scroll_offset_wait.WaitForScrollOffset(
gfx::PointF(0.f, ((float)scroll_delta) * device_scale_factor));
EXPECT_EQ(scroll_delta, EvalJs(shell()->web_contents(),
"document.scrollingElement.scrollTop"));
}
} // namespace content
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