/src/skia/modules/sksg/include/SkSGGradient.h
Line | Count | Source (jump to first uncovered line) |
1 | | /* |
2 | | * Copyright 2018 Google Inc. |
3 | | * |
4 | | * Use of this source code is governed by a BSD-style license that can be |
5 | | * found in the LICENSE file. |
6 | | */ |
7 | | |
8 | | #ifndef SkSGGradient_DEFINED |
9 | | #define SkSGGradient_DEFINED |
10 | | |
11 | | #include "include/core/SkColor.h" |
12 | | #include "include/core/SkPoint.h" |
13 | | #include "include/core/SkRefCnt.h" |
14 | | #include "include/core/SkScalar.h" |
15 | | #include "include/core/SkTileMode.h" |
16 | | #include "modules/sksg/include/SkSGNode.h" |
17 | | #include "modules/sksg/include/SkSGRenderEffect.h" |
18 | | |
19 | | #include <vector> |
20 | | |
21 | | class SkShader; |
22 | | |
23 | | namespace sksg { |
24 | | |
25 | | /** |
26 | | * Gradient base class. |
27 | | */ |
28 | | class Gradient : public Shader { |
29 | | public: |
30 | | struct ColorStop { |
31 | | SkScalar fPosition; |
32 | | SkColor4f fColor; |
33 | | |
34 | 0 | bool operator==(const ColorStop& other) const { |
35 | 0 | return fPosition == other.fPosition && fColor == other.fColor; |
36 | 0 | } |
37 | | }; |
38 | | |
39 | | SG_ATTRIBUTE(ColorStops, std::vector<ColorStop>, fColorStops) |
40 | | SG_ATTRIBUTE(TileMode , SkTileMode , fTileMode ) |
41 | | |
42 | | protected: |
43 | | sk_sp<SkShader> onRevalidateShader() final; |
44 | | |
45 | | virtual sk_sp<SkShader> onMakeShader(const std::vector<SkColor4f>& colors, |
46 | | const std::vector<SkScalar >& positions) const = 0; |
47 | | |
48 | | protected: |
49 | 18.2k | Gradient() = default; |
50 | | |
51 | | private: |
52 | | std::vector<ColorStop> fColorStops; |
53 | | SkTileMode fTileMode = SkTileMode::kClamp; |
54 | | |
55 | | using INHERITED = Shader; |
56 | | }; |
57 | | |
58 | | class LinearGradient final : public Gradient { |
59 | | public: |
60 | 10.8k | static sk_sp<LinearGradient> Make() { |
61 | 10.8k | return sk_sp<LinearGradient>(new LinearGradient()); |
62 | 10.8k | } |
63 | | |
64 | | SG_ATTRIBUTE(StartPoint, SkPoint, fStartPoint) |
65 | | SG_ATTRIBUTE(EndPoint , SkPoint, fEndPoint ) |
66 | | |
67 | | protected: |
68 | | sk_sp<SkShader> onMakeShader(const std::vector<SkColor4f>&, |
69 | | const std::vector<SkScalar >&) const override; |
70 | | |
71 | | private: |
72 | 10.8k | LinearGradient() = default; |
73 | | |
74 | | SkPoint fStartPoint = SkPoint::Make(0, 0), |
75 | | fEndPoint = SkPoint::Make(0, 0); |
76 | | |
77 | | using INHERITED = Gradient; |
78 | | }; |
79 | | |
80 | | class RadialGradient final : public Gradient { |
81 | | public: |
82 | 7.32k | static sk_sp<RadialGradient> Make() { |
83 | 7.32k | return sk_sp<RadialGradient>(new RadialGradient()); |
84 | 7.32k | } |
85 | | |
86 | | SG_ATTRIBUTE(StartCenter, SkPoint , fStartCenter) |
87 | | SG_ATTRIBUTE(EndCenter , SkPoint , fEndCenter ) |
88 | | SG_ATTRIBUTE(StartRadius, SkScalar, fStartRadius) |
89 | | SG_ATTRIBUTE(EndRadius , SkScalar, fEndRadius ) |
90 | | |
91 | | protected: |
92 | | sk_sp<SkShader> onMakeShader(const std::vector<SkColor4f>&, |
93 | | const std::vector<SkScalar >&) const override; |
94 | | |
95 | | private: |
96 | 7.32k | RadialGradient() = default; |
97 | | |
98 | | SkPoint fStartCenter = SkPoint::Make(0, 0), |
99 | | fEndCenter = SkPoint::Make(0, 0); |
100 | | SkScalar fStartRadius = 0, |
101 | | fEndRadius = 0; |
102 | | |
103 | | using INHERITED = Gradient; |
104 | | }; |
105 | | |
106 | | } // namespace sksg |
107 | | |
108 | | #endif // SkSGGradient_DEFINED |