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