1 /* 2 * Copyright 2014 Google Inc. All rights reserved. 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 #ifndef SCALER_H 18 #define SCALER_H 19 20 #include <fruit/fruit.h> 21 22 class Scaler { 23 public: 24 virtual double scale(double x) = 0; 25 26 virtual ~Scaler() = default; 27 }; 28 29 using ScalerFactory = std::function<std::unique_ptr<Scaler>(double)>; 30 31 fruit::Component<ScalerFactory> getScalerComponent(); 32 33 #endif // SCALER_H 34