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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_SmoothMsdScrollAnimation_h_
#define mozilla_layers_SmoothMsdScrollAnimation_h_
#include "AsyncPanZoomAnimation.h"
#include "mozilla/layers/AxisPhysicsMSDModel.h"
#include "mozilla/ScrollPositionUpdate.h"
namespace mozilla {
namespace layers {
class AsyncPanZoomController;
class SmoothMsdScrollAnimation final : public AsyncPanZoomAnimation {
SmoothMsdScrollAnimation(AsyncPanZoomController& aApzc,
const CSSPoint& aInitialPosition,
const CSSPoint& aInitialVelocity,
const CSSPoint& aDestination, double aSpringConstant,
double aDampingRatio,
ScrollSnapTargetIds&& aSnapTargetIds,
ScrollTriggeredByScript aTriggeredByScript);
* Advances a smooth scroll simulation based on the time passed in |aDelta|.
* This should be called whenever sampling the content transform for this
* frame. Returns true if the smooth scroll should be advanced by one frame,
* or false if the smooth scroll has ended.
bool DoSample(FrameMetrics& aFrameMetrics,
const TimeDuration& aDelta) override;
void SetDestination(const CSSPoint& aNewDestination,
ScrollSnapTargetIds&& aSnapTargetIds,
ScrollTriggeredByScript aTriggeredByScript);
CSSPoint GetDestination() const;
SmoothMsdScrollAnimation* AsSmoothMsdScrollAnimation() override;
bool WasTriggeredByScript() const override {
return mTriggeredByScript == ScrollTriggeredByScript::Yes;
ScrollSnapTargetIds TakeSnapTargetIds() { return std::move(mSnapTargetIds); }
AsyncPanZoomController& mApzc;
AxisPhysicsMSDModel mXAxisModel;
AxisPhysicsMSDModel mYAxisModel;
ScrollSnapTargetIds mSnapTargetIds;
ScrollTriggeredByScript mTriggeredByScript;
} // namespace layers
} // namespace mozilla