chromium/components/input/touchpad_pinch_event_queue.cc

// Copyright 2018 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#include "components/input/touchpad_pinch_event_queue.h"

#include "base/functional/bind.h"
#include "base/trace_event/trace_event.h"
#include "third_party/blink/public/common/input/web_mouse_wheel_event.h"
#include "ui/events/base_event_utils.h"
#include "ui/events/blink/blink_event_util.h"
#include "ui/latency/latency_info.h"

namespace input {

namespace {

blink::WebMouseWheelEvent CreateSyntheticWheelFromTouchpadPinchEvent(
    const blink::WebGestureEvent& pinch_event,
    blink::WebMouseWheelEvent::Phase phase,
    bool cancelable) { … }

}  // namespace

// This is a single queued pinch event to which we add trace events.
class QueuedTouchpadPinchEvent : public GestureEventWithLatencyInfo { … };

TouchpadPinchEventQueue::TouchpadPinchEventQueue(
    TouchpadPinchEventQueueClient* client)
    : … { … }

TouchpadPinchEventQueue::~TouchpadPinchEventQueue() = default;

void TouchpadPinchEventQueue::QueueEvent(
    const GestureEventWithLatencyInfo& event) { … }

void TouchpadPinchEventQueue::ProcessMouseWheelAck(
    const MouseWheelEventWithLatencyInfo& ack_event,
    blink::mojom::InputEventResultSource ack_source,
    blink::mojom::InputEventResultState ack_result) { … }

void TouchpadPinchEventQueue::TryForwardNextEventToRenderer() { … }

bool TouchpadPinchEventQueue::has_pending() const { … }

}  // namespace input