1 /*
2  * Copyright (c) 2022-2022 Huawei Device Co., Ltd.
3  * Licensed under the Apache License, Version 2.0 (the "License");
4  * you may not use this file except in compliance with the License.
5  * You may obtain a copy of the License at
6  *
7  *     http://www.apache.org/licenses/LICENSE-2.0
8  *
9  * Unless required by applicable law or agreed to in writing, software
10  * distributed under the License is distributed on an "AS IS" BASIS,
11  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12  * See the License for the specific language governing permissions and
13  * limitations under the License.
14  */
15 
16 #ifndef ROSEN_ENGINE_CORE_ANIMATION_RS_STEPS_INTERPOLATOR_H
17 #define ROSEN_ENGINE_CORE_ANIMATION_RS_STEPS_INTERPOLATOR_H
18 
19 #include "animation/rs_interpolator.h"
20 #include "common/rs_macros.h"
21 
22 namespace OHOS {
23 namespace Rosen {
24 enum class StepsCurvePosition {
25     START,
26     END,
27 };
28 
29 class RSB_EXPORT RSStepsInterpolator : public RSInterpolator {
30 public:
31     RSStepsInterpolator(int32_t steps, StepsCurvePosition position = StepsCurvePosition::START);
32     ~RSStepsInterpolator() override = default;
33 
34     float InterpolateImpl(float fraction) const override;
35     bool Marshalling(Parcel& parcel) const override;
36     [[nodiscard]] static RSStepsInterpolator* Unmarshalling(Parcel& parcel);
37 
GetType()38     InterpolatorType GetType() override { return InterpolatorType::STEPS; }
39 private:
40     RSStepsInterpolator(uint64_t id, int32_t steps, StepsCurvePosition position = StepsCurvePosition::START);
41     int32_t steps_ { 0 };
42     const StepsCurvePosition position_;
43     float fractionMin = 0.0f;
44     float fractionMax = 1.0f;
45 };
46 } // namespace Rosen
47 } // namespace OHOS
48 
49 #endif // ROSEN_ENGINE_CORE_ANIMATION_RS_STEPS_INTERPOLATOR_H
50