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// Copyright 2015 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_VALUE_H_
#define THIRD_PARTY_BLINK_RENDERER_CORE_ANIMATION_INTERPOLATION_VALUE_H_
#include <memory>
#include "third_party/blink/renderer/core/animation/interpolable_value.h"
#include "third_party/blink/renderer/core/animation/non_interpolable_value.h"
#include "third_party/blink/renderer/core/core_export.h"
#include "third_party/blink/renderer/platform/wtf/allocator/allocator.h"
namespace blink {
// Represents a (non-strict) subset of a PropertySpecificKeyframe's value broken
// down into interpolable and non-interpolable parts. InterpolationValues can be
// composed together to represent a whole PropertySpecificKeyframe value.
struct CORE_EXPORT InterpolationValue {
DISALLOW_NEW();
explicit InterpolationValue(
InterpolableValue* interpolable_value,
const NonInterpolableValue* non_interpolable_value = nullptr)
: interpolable_value(interpolable_value),
non_interpolable_value(non_interpolable_value) {}
InterpolationValue(std::nullptr_t) {}
InterpolationValue(InterpolationValue&& other)
: interpolable_value(std::move(other.interpolable_value)),
non_interpolable_value(std::move(other.non_interpolable_value)) {}
void operator=(InterpolationValue&& other) {
interpolable_value = std::move(other.interpolable_value);
non_interpolable_value = std::move(other.non_interpolable_value);
}
operator bool() const { return interpolable_value.Get(); }
InterpolationValue Clone() const {
return InterpolationValue(
interpolable_value ? interpolable_value->Clone() : nullptr,
non_interpolable_value);
}
void Clear() {
interpolable_value = nullptr;
non_interpolable_value = nullptr;
}
void Trace(Visitor* v) const {
v->Trace(interpolable_value);
v->Trace(non_interpolable_value);
}
Member<InterpolableValue> interpolable_value;
Member<const NonInterpolableValue> non_interpolable_value;
};
// Wrapper to be used with MakeGarbageCollected<>.
class InterpolationValueGCed : public GarbageCollected<InterpolationValueGCed> {
public:
explicit InterpolationValueGCed(const InterpolationValue& underlying)
: underlying_(underlying.Clone()) {}
void Trace(Visitor* v) const { v->Trace(underlying_); }
InterpolationValue& underlying() { return underlying_; }
const InterpolationValue& underlying() const { return underlying_; }
private:
InterpolationValue underlying_;
};
} // namespace blink
WTF_ALLOW_CLEAR_UNUSED_SLOTS_WITH_MEM_FUNCTIONS(blink::InterpolationValue)
#endif // THIRD_PARTY_BLINK_RENDERER_CORE_ANIMATION_INTERPOLATION_VALUE_H_
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