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 RS_COLOR_PICKER_H
17 #define RS_COLOR_PICKER_H
18 
19 #include <iostream>
20 #include "image/pixmap.h"
21 #include "draw/color.h"
22 #include "rs_color_extract.h"
23 
24 namespace OHOS {
25 namespace Rosen {
26 
27 struct HSV {
28     int h; // 色度取值(0-360)
29     double s; // 饱和度取值 (0-100)
30     double v; // 亮度取值 (0-100)
31 };
32 
33 class RSColorPicker : public RSColorExtract {
34 public:
~RSColorPicker()35     ~RSColorPicker() {}
36     NATIVEEXPORT static std::shared_ptr<RSColorPicker> CreateColorPicker(
37         const std::shared_ptr<Drawing::Pixmap>& pixmap, uint32_t &errorCode);
38     NATIVEEXPORT static std::shared_ptr<RSColorPicker> CreateColorPicker(
39         const std::shared_ptr<Drawing::Pixmap>& pixmap, double* coordinates, uint32_t &errorCode);
40 
41     NATIVEEXPORT uint32_t GetLargestProportionColor(Drawing::ColorQuad &color) const;
42     NATIVEEXPORT uint32_t GetHighestSaturationColor(Drawing::ColorQuad &color) const;
43     NATIVEEXPORT uint32_t GetAverageColor(Drawing::ColorQuad &color) const;
44     NATIVEEXPORT bool IsBlackOrWhiteOrGrayColor(uint32_t color) const;
45 
46 private:
47     RSColorPicker(std::shared_ptr<Drawing::Pixmap> pixmap);
48     RSColorPicker(std::shared_ptr<Drawing::Pixmap> pixmap, double* coordinates);
49     bool IsEquals(double val1, double val2) const;
50     HSV RGB2HSV(uint32_t rgb) const;
51     void AdjustHSVToDefinedIterval(HSV& hsv) const;
52     uint32_t HSVtoRGB(HSV hsv) const;
53 };
54 } // namespace Rosen
55 } // namespace OHOS
56 
57 #endif // RS_COLOR_PICKER_H
58