void CefRenderWidgetHostViewOSR::SendTouchEvent()

in libcef/browser/osr/render_widget_host_view_osr.cc [1249:1305]
43 lines of code
16 McCabe index (conditional complexity)

void CefRenderWidgetHostViewOSR::SendTouchEvent(const CefTouchEvent& event) {
  TRACE_EVENT0("cef", "CefRenderWidgetHostViewOSR::SendTouchEvent");

  if (!IsPopupWidget() && popup_host_view_) {
    if (!forward_touch_to_popup_ && event.type == CEF_TET_PRESSED &&
        pointer_state_.GetPointerCount() == 0) {
      forward_touch_to_popup_ =
          popup_host_view_->popup_position_.Contains(event.x, event.y);
    }

    if (forward_touch_to_popup_) {
      CefTouchEvent popup_event(event);
      popup_event.x -= popup_host_view_->popup_position_.x();
      popup_event.y -= popup_host_view_->popup_position_.y();
      popup_host_view_->SendTouchEvent(popup_event);
      return;
    }
  }

  // Update the touch event first.
  if (!pointer_state_.OnTouch(event))
    return;

  ui::FilteredGestureProvider::TouchHandlingResult result =
      gesture_provider_.OnTouchEvent(pointer_state_);

  blink::WebTouchEvent touch_event = ui::CreateWebTouchEventFromMotionEvent(
      pointer_state_, result.moved_beyond_slop_region, false);

  pointer_state_.CleanupRemovedTouchPoints(event);

  // Set unchanged touch point to StateStationary for touchmove and
  // touchcancel to make sure only send one ack per WebTouchEvent.
  if (!result.succeeded)
    pointer_state_.MarkUnchangedTouchPointsAsStationary(&touch_event, event);

  if (!render_widget_host_)
    return;

  ui::LatencyInfo latency_info = CreateLatencyInfo(touch_event);
  if (ShouldRouteEvents()) {
    render_widget_host_->delegate()->GetInputEventRouter()->RouteTouchEvent(
        this, &touch_event, latency_info);
  } else {
    render_widget_host_->ForwardTouchEventWithLatencyInfo(touch_event,
                                                          latency_info);
  }

  bool touch_end =
      touch_event.GetType() == blink::WebInputEvent::Type::kTouchEnd ||
      touch_event.GetType() == blink::WebInputEvent::Type::kTouchCancel;

  if (touch_end && IsPopupWidget() && parent_host_view_ &&
      parent_host_view_->popup_host_view_ == this) {
    parent_host_view_->forward_touch_to_popup_ = false;
  }
}