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_COMPONENTS_BASE_PROPERTIES_ALIGNMENT_H
17 #define FOUNDATION_ACE_FRAMEWORKS_CORE_COMPONENTS_BASE_PROPERTIES_ALIGNMENT_H
18 
19 #include <string>
20 
21 #include "base/geometry/ng/offset_t.h"
22 #include "base/geometry/ng/size_t.h"
23 #include "base/geometry/offset.h"
24 #include "base/geometry/size.h"
25 #include "base/utils/macros.h"
26 #include "core/components/common/layout/constants.h"
27 
28 namespace OHOS::Ace {
29 
30 class ACE_FORCE_EXPORT Alignment final {
31 public:
32     Alignment() = default;
33     ~Alignment() = default;
34 
GetHorizontal()35     double GetHorizontal() const
36     {
37         return horizontal_;
38     }
39 
GetVertical()40     double GetVertical() const
41     {
42         return vertical_;
43     }
44 
45     bool operator==(const Alignment& other) const
46     {
47         return NearEqual(horizontal_, other.horizontal_) && NearEqual(vertical_, other.vertical_);
48     }
49 
50     bool operator!=(const Alignment& other) const
51     {
52         return !operator==(other);
53     }
54 
55     static Offset GetAlignPosition(const Size& parentSize, const Size& childSize, const Alignment& alignment);
56     static NG::OffsetF GetAlignPosition(
57         const NG::SizeF& parentSize, const NG::SizeF& childSize, const Alignment& alignment);
58     static const Alignment TOP_LEFT;
59     static const Alignment TOP_CENTER;
60     static const Alignment TOP_RIGHT;
61     static const Alignment CENTER_LEFT;
62     static const Alignment CENTER;
63     static const Alignment CENTER_RIGHT;
64     static const Alignment BOTTOM_LEFT;
65     static const Alignment BOTTOM_CENTER;
66     static const Alignment BOTTOM_RIGHT;
67 
ToString()68     std::string ToString() const
69     {
70         std::stringstream ss;
71         ss << "Alignment (" << std::fixed << std::setprecision(1) << horizontal_ << ", " << vertical_ << ")";
72         std::string output = ss.str();
73         return output;
74     }
75 
76     std::string GetAlignmentStr(TextDirection direction) const;
77 
78     static Alignment GetAlignment(TextDirection direction, const std::string& str);
79 
80     static std::optional<Alignment> ParseAlignment(int32_t alignment);
81 
82 private:
83     friend class AlignCreator;
Alignment(double horizontal,double vertical)84     Alignment(double horizontal, double vertical) : horizontal_(horizontal), vertical_(vertical) {}
85     double horizontal_ = 0.0;
86     double vertical_ = 0.0;
87 };
88 
89 } // namespace OHOS::Ace
90 
91 #endif // FOUNDATION_ACE_FRAMEWORKS_CORE_COMPONENTS_BASE_PROPERTIES_ALIGNMENT_H
92