chromium/ui/views/animation/animation_sequence_block.h

// Copyright 2021 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef UI_VIEWS_ANIMATION_ANIMATION_SEQUENCE_BLOCK_H_
#define UI_VIEWS_ANIMATION_ANIMATION_SEQUENCE_BLOCK_H_

#include <map>
#include <memory>
#include <optional>

#include "base/functional/callback_forward.h"
#include "base/memory/raw_ptr.h"
#include "base/time/time.h"
#include "base/types/pass_key.h"
#include "third_party/abseil-cpp/absl/types/variant.h"
#include "third_party/skia/include/core/SkColor.h"
#include "ui/gfx/geometry/transform.h"
#include "ui/views/animation/animation_key.h"
#include "ui/views/views_export.h"

namespace gfx {
class Rect;
class RoundedCornersF;
class LinearGradient;
}  // namespace gfx

namespace ui {
class InterpolatedTransform;
class Layer;
class LayerOwner;
}  // namespace ui

namespace views {

class AnimationBuilder;

// An animation sequence block is a single unit of a larger animation sequence,
// which has a start time, duration, and zero or more (target, property)
// animations. There may be multiple properties animating on a single target,
// and/or multiple targets animating, but the same property on the same target
// may only be animated at most once per block. Animations can be added by
// calling SetXXX(). Calling At(), Offset(), or Then() create a new block.
class VIEWS_EXPORT AnimationSequenceBlock { … };

}  // namespace views

#endif  // UI_VIEWS_ANIMATION_ANIMATION_SEQUENCE_BLOCK_H_