chromium/cc/animation/scroll_offset_animation_curve.h

// Copyright 2013 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef CC_ANIMATION_SCROLL_OFFSET_ANIMATION_CURVE_H_
#define CC_ANIMATION_SCROLL_OFFSET_ANIMATION_CURVE_H_

#include <memory>
#include <optional>

#include "base/gtest_prod_util.h"
#include "base/memory/raw_ptr.h"
#include "base/time/time.h"
#include "cc/animation/animation_export.h"
#include "ui/gfx/animation/keyframe/animation_curve.h"
#include "ui/gfx/geometry/point_f.h"
#include "ui/gfx/geometry/vector2d_f.h"

namespace gfx {
class TimingFunction;
}  // namespace gfx

namespace cc {

// ScrollOffsetAnimationCurve computes scroll offset as a function of time
// during a scroll offset animation.
//
// Scroll offset animations can run either in Blink or in cc, in response to
// user input or programmatic scroll operations.  For more information about
// scheduling and servicing scroll animations, see blink::ScrollAnimator and
// blink::ProgrammaticScrollAnimator.
class CC_ANIMATION_EXPORT ScrollOffsetAnimationCurve
    : public gfx::AnimationCurve { … };

}  // namespace cc

#endif  // CC_ANIMATION_SCROLL_OFFSET_ANIMATION_CURVE_H_