1 /*
2  * Copyright (c) 2023 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_COMPONENTS_NG_RENDER_ADAPTER_LINEAR_VECTOR_H
17 #define FOUNDATION_ACE_FRAMEWORKS_CORE_COMPONENTS_NG_RENDER_ADAPTER_LINEAR_VECTOR_H
18 
19 #include <vector>
20 
21 #include "base/geometry/size.h"
22 #include "frameworks/base/utils/macros.h"
23 
24 namespace OHOS::Ace::NG {
25 template<typename T>
26 class ACE_EXPORT LinearVector : public std::vector<T> {
27 public:
28     LinearVector() = default;
LinearVector(const size_t n)29     explicit LinearVector(const size_t n) : std::vector<T>(n) {};
LinearVector(const size_t n,T value)30     LinearVector(const size_t n, T value) : std::vector<T>(n, value) {};
LinearVector(std::initializer_list<T> li)31     LinearVector(std::initializer_list<T> li) : std::vector<T>(li) {};
32     ~LinearVector() = default;
33 
34     LinearVector operator+(const LinearVector& linearVector) const
35     {
36         LinearVector longLinearVector = linearVector.size() > this->size() ? linearVector : *this;
37         const LinearVector* shortLinearVector = linearVector.size() <= this->size() ? &linearVector : this;
38         for (size_t i = 0; i < shortLinearVector->size(); ++i) {
39             longLinearVector[i] += shortLinearVector->at(i);
40         }
41         return longLinearVector;
42     }
43 
44     LinearVector operator-(const LinearVector& linearVector) const
45     {
46         LinearVector longLinearVector = linearVector.size() > this->size() ? linearVector : *this;
47         const LinearVector* shortLinearVector = linearVector.size() <= this->size() ? &linearVector : this;
48         for (size_t i = 0; i < shortLinearVector->size(); ++i) {
49             longLinearVector[i] -= shortLinearVector->at(i);
50         }
51         return longLinearVector;
52     }
53 
54     LinearVector operator*(const float scale) const
55     {
56         LinearVector linearVector = *this;
57         for (size_t i = 0; i < linearVector.size(); ++i) {
58             linearVector[i] *= scale;
59         }
60         return linearVector;
61     }
62 
63     bool operator==(const LinearVector& linearVector) const
64     {
65         if (this->size() != linearVector.size()) {
66             return false;
67         }
68         for (size_t i = 0; i < linearVector.size(); ++i) {
69             if (!NearEqual(this->at(i), linearVector[i])) {
70                 return false;
71             }
72         }
73         return true;
74     }
75 };
76 } // namespace OHOS::Ace::NG
77 
78 #endif // FOUNDATION_ACE_FRAMEWORKS_CORE_COMPONENTS_NG_RENDER_ADAPTER_LINEAR_VECTOR_H
79