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// Copyright 2012 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "content/browser/renderer_host/ui_events_helper.h"
#include <stdint.h>
#include "content/common/input/web_touch_event_traits.h"
#include "third_party/blink/public/common/features.h"
#include "third_party/blink/public/common/input/web_input_event.h"
#include "ui/events/base_event_utils.h"
#include "ui/events/blink/blink_event_util.h"
#include "ui/events/event.h"
#include "ui/events/event_constants.h"
#include "ui/events/types/event_type.h"
namespace {
ui::EventType WebTouchPointStateToEventType(
blink::WebTouchPoint::State state) {
switch (state) {
case blink::WebTouchPoint::State::kStateReleased:
return ui::ET_TOUCH_RELEASED;
case blink::WebTouchPoint::State::kStatePressed:
return ui::ET_TOUCH_PRESSED;
case blink::WebTouchPoint::State::kStateMoved:
return ui::ET_TOUCH_MOVED;
case blink::WebTouchPoint::State::kStateCancelled:
return ui::ET_TOUCH_CANCELLED;
default:
return ui::ET_UNKNOWN;
}
}
} // namespace
namespace content {
bool MakeUITouchEventsFromWebTouchEvents(
const TouchEventWithLatencyInfo& touch_with_latency,
std::vector<std::unique_ptr<ui::TouchEvent>>* list,
TouchEventCoordinateSystem coordinate_system) {
const blink::WebTouchEvent& touch = touch_with_latency.event;
ui::EventType type = ui::ET_UNKNOWN;
switch (touch.GetType()) {
case blink::WebInputEvent::Type::kTouchStart:
type = ui::ET_TOUCH_PRESSED;
break;
case blink::WebInputEvent::Type::kTouchEnd:
type = ui::ET_TOUCH_RELEASED;
break;
case blink::WebInputEvent::Type::kTouchMove:
type = ui::ET_TOUCH_MOVED;
break;
case blink::WebInputEvent::Type::kTouchCancel:
type = ui::ET_TOUCH_CANCELLED;
break;
default:
NOTREACHED();
return false;
}
int flags = ui::WebEventModifiersToEventFlags(touch.GetModifiers());
base::TimeTicks timestamp = touch.TimeStamp();
for (unsigned i = 0; i < touch.touches_length; ++i) {
const blink::WebTouchPoint& point = touch.touches[i];
if (WebTouchPointStateToEventType(point.state) != type)
continue;
// ui events start in the co-ordinate space of the EventDispatcher.
gfx::PointF location;
if (coordinate_system == LOCAL_COORDINATES)
location = point.PositionInWidget();
else
location = point.PositionInScreen();
auto uievent = std::make_unique<ui::TouchEvent>(
type, gfx::Point(), timestamp,
ui::PointerDetails(ui::EventPointerType::kTouch, point.id,
point.radius_x, point.radius_y, point.force,
point.rotation_angle, point.tilt_x, point.tilt_y,
point.tangential_pressure),
flags);
uievent->set_location_f(location);
uievent->set_root_location_f(location);
uievent->set_latency(touch_with_latency.latency);
list->push_back(std::move(uievent));
}
return true;
}
bool InputEventResultStateIsSetBlocking(
blink::mojom::InputEventResultState ack_state) {
static bool fix_input_queueing_bug = base::FeatureList::IsEnabled(
blink::features::kFixGestureScrollQueuingBug);
// The bug here is this function returning an inverted result
// The finch experiment |kFixGestureScrollQueuingBug| releases a fix
// for this bug that flips this inversion.
if (!fix_input_queueing_bug) {
switch (ack_state) {
case blink::mojom::InputEventResultState::kSetNonBlocking:
case blink::mojom::InputEventResultState::kSetNonBlockingDueToFling:
return true;
default:
return false;
}
} else {
// Default input events are marked as kNotConsumed and should not
// be marked as blocking.
switch (ack_state) {
case blink::mojom::InputEventResultState::kNotConsumedBlocking:
case blink::mojom::InputEventResultState::kConsumed:
return true;
default:
return false;
}
}
}
} // namespace content
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