1 /*
2 * Copyright (c) 2024 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 "core/components_ng/pattern/canvas/custom_paint_util.h"
17 #include "base/utils/string_utils.h"
18
19 namespace OHOS::Ace::NG {
20
21 // If type is empty or invalid format, use default: "image/png"
GetMimeType(const std::string & type)22 std::string GetMimeType(const std::string& type)
23 {
24 // type example: ["image/png"]
25 std::string str = type;
26 // convert to lowercase string, e.g. "image/png"
27 std::transform(str.begin(), str.end(), str.begin(), [](unsigned char c) { return std::tolower(c); });
28 return str;
29 }
30
GetQuality(const std::string & type,const double quality)31 double GetQuality(const std::string& type, const double quality)
32 {
33 // type example: "image/jpeg", quality example: 0.8
34 double qua = quality;
35 if (type != IMAGE_JPEG && type != IMAGE_WEBP) {
36 qua = DEFAULT_QUALITY;
37 }
38 if (quality < 0.0 || quality > 1.0) {
39 qua = DEFAULT_QUALITY;
40 }
41 return qua * QUALITY_COEFFICIENT;
42 }
43
44 #ifndef ACE_UNITTEST
EncodeImage(std::string & type,const double quality,SkPixmap & src,SkDynamicMemoryWStream & dst)45 bool EncodeImage(std::string& type, const double quality, SkPixmap& src, SkDynamicMemoryWStream& dst)
46 {
47 bool encodeImageResult = false;
48 if (type == IMAGE_JPEG) {
49 SkJpegEncoder::Options options;
50 options.fQuality = quality;
51 encodeImageResult = SkJpegEncoder::Encode(&dst, src, options);
52 } else if (type == IMAGE_WEBP) {
53 SkWebpEncoder::Options options;
54 options.fQuality = quality;
55 encodeImageResult = SkWebpEncoder::Encode(&dst, src, options);
56 } else {
57 type = IMAGE_PNG;
58 SkPngEncoder::Options options;
59 encodeImageResult = SkPngEncoder::Encode(&dst, src, options);
60 }
61 return encodeImageResult;
62 }
63 #endif
64 } // namespace OHOS::Ace::NG
65