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// Copyright 2017 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "third_party/blink/renderer/core/animation/transition_interpolation.h"
#include <memory>
#include "third_party/blink/renderer/core/animation/css/compositor_keyframe_value.h"
#include "third_party/blink/renderer/core/animation/typed_interpolation_value.h"
namespace blink {
void TransitionInterpolation::Interpolate(int iteration, double fraction) {
if (!cached_fraction_ || *cached_fraction_ != fraction ||
cached_iteration_ != iteration) {
if (merge_) {
merge_.start_interpolable_value->Interpolate(
*merge_.end_interpolable_value, fraction,
*cached_interpolable_value_);
}
cached_iteration_ = iteration;
cached_fraction_.emplace(fraction);
}
}
const InterpolableValue& TransitionInterpolation::CurrentInterpolableValue()
const {
if (merge_) {
return *cached_interpolable_value_;
}
return cached_fraction_ < 0.5 ? *start_.interpolable_value
: *end_.interpolable_value;
}
const NonInterpolableValue*
TransitionInterpolation::CurrentNonInterpolableValue() const {
if (merge_) {
return merge_.non_interpolable_value.Get();
}
return cached_fraction_ < 0.5 ? start_.non_interpolable_value.Get()
: end_.non_interpolable_value.Get();
}
void TransitionInterpolation::Apply(
CSSInterpolationEnvironment& environment) const {
type_->Apply(CurrentInterpolableValue(), CurrentNonInterpolableValue(),
environment);
}
TypedInterpolationValue* TransitionInterpolation::GetInterpolatedValue() const {
return MakeGarbageCollected<TypedInterpolationValue>(
type_, CurrentInterpolableValue().Clone(), CurrentNonInterpolableValue());
}
} // namespace blink
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