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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at */
#ifndef mozilla_layers_AutocrollAnimation_h_
#define mozilla_layers_AutocrollAnimation_h_
#include "AsyncPanZoomAnimation.h"
namespace mozilla {
namespace layers {
class AsyncPanZoomController;
class AutoscrollAnimation : public AsyncPanZoomAnimation {
AutoscrollAnimation(AsyncPanZoomController& aApzc,
const ScreenPoint& aAnchorLocation);
bool DoSample(FrameMetrics& aFrameMetrics,
const TimeDuration& aDelta) override;
bool HandleScrollOffsetUpdate(
const Maybe<CSSPoint>& aRelativeDelta) override {
// Autoscroll works using screen space coordinates, so there's no work we
// need to do to handle either a relative or an absolute scroll update.
return true;
void Cancel(CancelAnimationFlags aFlags) override;
AsyncPanZoomController& mApzc;
ScreenPoint mAnchorLocation;
} // namespace layers
} // namespace mozilla
#endif // mozilla_layers_AutoscrollAnimation_h_