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 ROSEN_MODULES_TEXGINE_SRC_TEXGINE_DRAWING_TEXGINE_MASK_FILTER_H
17 #define ROSEN_MODULES_TEXGINE_SRC_TEXGINE_DRAWING_TEXGINE_MASK_FILTER_H
18 
19 #include <memory>
20 
21 #include "drawing.h"
22 
23 namespace OHOS {
24 namespace Rosen {
25 namespace TextEngine {
26 class TexgineMaskFilter {
27 public:
28     enum TexgineBlurStyle : int {
29         K_NORMAL_SK_BLUR_STYLE, // Inner and outer blur
30         K_SOLID_SK_BLUR_STYLE,  // solid inner and blur outer
31         K_OUTER_SK_BLUR_STYLE,  // only blur outer
32         K_INNER_SK_BLUR_STYLE,  // only blur inner
33         K_LAST_ENUM_SK_BLUR_STYLE = K_INNER_SK_BLUR_STYLE,
34     };
35     std::shared_ptr<RSMaskFilter> GetMaskFilter() const;
36 
37     /*
38      * @brief Sets SkMaskFilter that user want to TexgineMaskFilter
39      */
40     void SetMaskFilter(const std::shared_ptr<RSMaskFilter> filter);
41 
42     /*
43      * @brief Create a blur maskfilter
44      * @param style The TexgineBlurStyle to use
45      * @param sigma The standard deviation of the Gaussian blur to apply. Must be greater than 0
46      * @param respectCTM If true, the blurry Sigma is modified by CTM
47      */
48     static std::shared_ptr<TexgineMaskFilter> MakeBlur(TexgineBlurStyle style,
49         float sigma, bool respectCTM = true);
50 
51 private:
52     std::shared_ptr<RSMaskFilter> filter_ = nullptr;
53 };
54 } // namespace TextEngine
55 } // namespace Rosen
56 } // namespace OHOS
57 
58 #endif // ROSEN_MODULES_TEXGINE_SRC_TEXGINE_DRAWING_TEXGINE_MASK_FILTER_H
59