1 /*
2  * Copyright (c) 2021 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 FOUNDATION_ACE_FRAMEWORKS_CORE_ANIMATION_SIMPLE_SPRING_NODE_H
17 #define FOUNDATION_ACE_FRAMEWORKS_CORE_ANIMATION_SIMPLE_SPRING_NODE_H
18 
19 #include "core/animation/scheduler.h"
20 #include "core/animation/spring_motion.h"
21 #include "core/animation/spring_node.h"
22 #include "core/pipeline/pipeline_context.h"
23 
24 namespace OHOS::Ace {
25 
26 class SimpleSpringNode : public SpringNode {
27     DECLARE_ACE_TYPE(SimpleSpringNode, SpringNode);
28 
29 public:
30     SimpleSpringNode(const WeakPtr<PipelineBase>& context, int32_t index, double value);
31     ~SimpleSpringNode() override = default;
32 
33     void EndToValue(double endValue, double velocity) override;
34 
35     void TransferParams(double stiffness, double damping) override;
36 
GetValue()37     double GetValue() const override
38     {
39         return value_;
40     }
41 
42     void SetValue(double value) override;
43 
SetDeltaValue(double delta)44     void SetDeltaValue(double delta) override
45     {
46         value_ += delta;
47     }
48 
49     void ResetNode(double value, double velocity) override;
50 
GetVelocity()51     double GetVelocity() const override
52     {
53         return velocity_;
54     }
55 
SetVelocity(double velocity)56     void SetVelocity(double velocity)
57     {
58         velocity_ = velocity;
59     }
60 
GetTransferParams()61     const RefPtr<SpringProperty> GetTransferParams() const
62     {
63         return springProperty_;
64     }
65 
66     void OnAnimation() override;
67 
68 protected:
69     static constexpr double DEFAULT_CHAIN_VALUE_ACCURACY = 1.0;
70     virtual void NotifyNext(double endValue, double initVelocity);
71     RefPtr<SpringMotion> spring_;
72     RefPtr<SpringProperty> springProperty_;
73     RefPtr<Scheduler> scheduler_;
74     const WeakPtr<PipelineBase> context_;
75     double value_ = 0.0;
76     double velocity_ = 0.0;
77     double valueAccuracy_ = DEFAULT_CHAIN_VALUE_ACCURACY;
78 
79     void Cancel() override;
80 };
81 
82 } // namespace OHOS::Ace
83 
84 #endif // FOUNDATION_ACE_FRAMEWORKS_CORE_ANIMATION_SIMPLE_SPRING_NODE_H
85