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// Copyright 2014 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef THIRD_PARTY_BLINK_RENDERER_CORE_ANIMATION_INTERPOLATION_EFFECT_H_
#define THIRD_PARTY_BLINK_RENDERER_CORE_ANIMATION_INTERPOLATION_EFFECT_H_
#include "third_party/blink/renderer/core/animation/interpolation.h"
#include "third_party/blink/renderer/core/animation/keyframe.h"
#include "third_party/blink/renderer/core/core_export.h"
#include "third_party/blink/renderer/platform/animation/timing_function.h"
#include "third_party/blink/renderer/platform/heap/garbage_collected.h"
namespace blink {
// Stores all adjacent pairs of keyframes (represented by Interpolations) in a
// KeyframeEffectModel with keyframe offset data preprocessed for more efficient
// active keyframe pair sampling.
class CORE_EXPORT InterpolationEffect
: public GarbageCollected<InterpolationEffect> {
public:
InterpolationEffect() : is_populated_(false) {}
bool IsPopulated() const { return is_populated_; }
void SetPopulated() { is_populated_ = true; }
void Clear() {
is_populated_ = false;
interpolations_.clear();
}
void GetActiveInterpolations(double fraction,
TimingFunction::LimitDirection limit_direction,
HeapVector<Member<Interpolation>>&) const;
void AddInterpolation(Interpolation* interpolation,
scoped_refptr<TimingFunction> easing,
double start,
double end,
double apply_from,
double apply_to) {
interpolations_.push_back(MakeGarbageCollected<InterpolationRecord>(
interpolation, std::move(easing), start, end, apply_from, apply_to));
}
void AddInterpolationsFromKeyframes(
const PropertyHandle&,
const Keyframe::PropertySpecificKeyframe& keyframe_a,
const Keyframe::PropertySpecificKeyframe& keyframe_b,
double apply_from,
double apply_to);
void AddStaticValuedInterpolation(
const PropertyHandle& property,
const Keyframe::PropertySpecificKeyframe& keyframe);
void Trace(Visitor*) const;
private:
class InterpolationRecord final
: public GarbageCollected<InterpolationRecord> {
public:
InterpolationRecord(Interpolation* interpolation,
scoped_refptr<TimingFunction> easing,
double start,
double end,
double apply_from,
double apply_to)
: interpolation_(interpolation),
easing_(std::move(easing)),
start_(start),
end_(end),
apply_from_(apply_from),
apply_to_(apply_to),
is_static_(false) {}
// When a range is not specified, we mark the interpolation as static.
explicit InterpolationRecord(Interpolation* interpolation)
: interpolation_(interpolation),
start_(0),
end_(1),
apply_from_(0),
apply_to_(1),
is_static_(true) {}
Member<Interpolation> interpolation_;
scoped_refptr<TimingFunction> easing_;
double start_;
double end_;
double apply_from_;
double apply_to_;
bool is_static_;
void Trace(Visitor* visitor) const { visitor->Trace(interpolation_); }
};
bool is_populated_;
HeapVector<Member<InterpolationRecord>> interpolations_;
};
} // namespace blink
#endif // THIRD_PARTY_BLINK_RENDERER_CORE_ANIMATION_INTERPOLATION_EFFECT_H_
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