third_party/blink/renderer/core/events/wheel_event_init.idl

// Copyright 2014 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.

// https://w3c.github.io/uievents/#idl-def-WheelEventInit

dictionary WheelEventInit : MouseEventInit {
    double deltaX = 0.0;
    double deltaY = 0.0;
    double deltaZ = 0.0;
    unsigned long deltaMode = 0;

    // Non-standard APIs
    long wheelDeltaX = 0;
    long wheelDeltaY = 0;
};