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// Copyright 2019 The Cobalt Authors. All Rights Reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#ifndef COBALT_CSSOM_INTERPOLATED_TRANSFORM_PROPERTY_VALUE_H_
#define COBALT_CSSOM_INTERPOLATED_TRANSFORM_PROPERTY_VALUE_H_
#include <string>
#include "base/compiler_specific.h"
#include "cobalt/base/polymorphic_equatable.h"
#include "cobalt/cssom/transform_property_value.h"
namespace cobalt {
namespace cssom {
// This represents an interpolation between two TransformPropertyValues.
class InterpolatedTransformPropertyValue : public TransformPropertyValue {
public:
InterpolatedTransformPropertyValue(TransformPropertyValue* start_value,
TransformPropertyValue* end_value,
float progress);
std::string ToString() const override;
bool HasTrait(TransformFunction::Trait trait) const override {
return start_value_->HasTrait(trait) || end_value_->HasTrait(trait);
}
math::Matrix3F ToMatrix(const math::SizeF& used_size,
const scoped_refptr<ui_navigation::NavItem>& used_ui_nav_focus)
const override;
bool operator==(const InterpolatedTransformPropertyValue& other) const {
return progress_ == other.progress_ &&
start_value_->Equals(*other.start_value_) &&
end_value_->Equals(*other.end_value_);
}
DEFINE_POLYMORPHIC_EQUATABLE_TYPE(InterpolatedTransformPropertyValue);
private:
~InterpolatedTransformPropertyValue() override {}
scoped_refptr<TransformPropertyValue> start_value_;
scoped_refptr<TransformPropertyValue> end_value_;
const float progress_;
};
} // namespace cssom
} // namespace cobalt
#endif // COBALT_CSSOM_INTERPOLATED_TRANSFORM_PROPERTY_VALUE_H_