chromium/src/third_party/blink/public/mojom/input/gesture_event.mojom

// Copyright 2020 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.

module blink.mojom;

// The type of gesture device generating the event.
enum GestureDevice {
  kUninitialized,
  kTouchpad,
  kTouchscreen,
  kSyntheticAutoscroll,

  // This is the device type used when generating synthetic gesture scrolls for
  // compositor thread scrollbar scrolling. Please refer to
  // ui::InputHandlerProxy::InjectScrollbarGestureScroll to see how this is
  // consumed. Explainer:
  // https://github.com/MicrosoftEdge/MSEdgeExplainers/blob/master/Scrolling/ImplScrollbars/dev-diagram.md
  kScrollbar,
};

// The phase at which the current scrolling gesture is in.
enum InertialPhaseState {
  kUnknownMomentum,      // No phase information.
  kNonMomentum,          // Regular scrolling phase.
  kMomentum,             // Momentum phase.
};