1 /*
2 * Copyright (c) 2021-2022 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 #include "base/geometry/dimension.h"
17
18 #include <array>
19
20 #include "base/utils/string_utils.h"
21 #include "base/utils/utils.h"
22 #include "core/pipeline/pipeline_base.h"
23
24 namespace OHOS::Ace {
25
ConvertToVp() const26 double Dimension::ConvertToVp() const
27 {
28 if (unit_ == DimensionUnit::VP) {
29 return value_;
30 }
31
32 auto pipeline = PipelineBase::GetCurrentContext();
33 CHECK_NULL_RETURN(pipeline, 0.0);
34 if (unit_ == DimensionUnit::PX) {
35 return value_ / pipeline->GetDipScale();
36 }
37 if (unit_ == DimensionUnit::FP) {
38 return value_ * pipeline->GetFontScale();
39 }
40 if (unit_ == DimensionUnit::LPX) {
41 return value_ * pipeline->GetLogicScale() / pipeline->GetDipScale();
42 }
43 LOGE("fail to ConvertToVp, %{public}f, %{public}d", value_, unit_);
44 return 0.0;
45 }
46
ConvertToPx() const47 double Dimension::ConvertToPx() const
48 {
49 if (unit_ == DimensionUnit::PX) {
50 return value_;
51 }
52
53 auto pipeline = PipelineBase::GetCurrentContext();
54 CHECK_NULL_RETURN(pipeline, 0.0);
55 if (unit_ == DimensionUnit::VP) {
56 return value_ * pipeline->GetDipScale();
57 }
58 if (unit_ == DimensionUnit::FP) {
59 return value_ * pipeline->GetDipScale() * pipeline->GetFontScale();
60 }
61 if (unit_ == DimensionUnit::LPX) {
62 return value_ * pipeline->GetLogicScale();
63 }
64 LOGE("fail to ConvertToPx, %{public}f, %{public}d", value_, unit_);
65 return 0.0;
66 }
67
ConvertToPxWithSize(double size) const68 double Dimension::ConvertToPxWithSize(double size) const
69 {
70 if (unit_ == DimensionUnit::PERCENT) {
71 return value_ * size;
72 }
73 return ConvertToPx();
74 }
75
ToString() const76 std::string Dimension::ToString() const
77 {
78 static const int32_t unitsNum = 6;
79 static const int32_t percentIndex = 3;
80 static const int32_t percentUnit = 100;
81 static std::array<std::string, unitsNum> units = { "px", "vp", "fp", "%", "lpx", "auto" };
82 if (units[static_cast<int>(unit_)] == units[percentIndex]) {
83 return StringUtils::DoubleToString(value_ * percentUnit).append(units[static_cast<int>(unit_)]);
84 }
85 return StringUtils::DoubleToString(value_).append(units[static_cast<int>(unit_)]);
86 }
87
NormalizeToPx(double vpScale,double fpScale,double lpxScale,double parentLength,double & result) const88 bool Dimension::NormalizeToPx(
89 double vpScale, double fpScale, double lpxScale, double parentLength, double& result) const
90 {
91 if (unit_ == DimensionUnit::PX) {
92 result = value_;
93 return true;
94 }
95 if (unit_ == DimensionUnit::PERCENT) {
96 if (NonNegative(parentLength)) {
97 result = value_ * parentLength;
98 return true;
99 }
100 return false;
101 }
102 if (unit_ == DimensionUnit::VP) {
103 if (Positive(vpScale)) {
104 result = value_ * vpScale;
105 return true;
106 }
107 return false;
108 }
109 if (unit_ == DimensionUnit::FP) {
110 if (Positive(fpScale)) {
111 result = value_ * fpScale * vpScale;
112 return true;
113 }
114 return false;
115 }
116 if (unit_ == DimensionUnit::LPX) {
117 if (Positive(lpxScale)) {
118 result = value_ * lpxScale;
119 return true;
120 }
121 return false;
122 }
123 return false;
124 }
125 } // namespace OHOS::Ace