1 | /* |
2 | * Copyright 2017 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 SkSGTrimEffect_DEFINED |
9 | #define SkSGTrimEffect_DEFINED |
10 | |
11 | #include "modules/sksg/include/SkSGGeometryNode.h" |
12 | |
13 | #include "include/core/SkPath.h" |
14 | #include "include/effects/SkTrimPathEffect.h" |
15 | |
16 | class SkCanvas; |
17 | class SkPaint; |
18 | |
19 | namespace sksg { |
20 | |
21 | /** |
22 | * Concrete Geometry node, applying a trim effect to its child. |
23 | */ |
24 | class TrimEffect final : public GeometryNode { |
25 | public: |
26 | static sk_sp<TrimEffect> Make(sk_sp<GeometryNode> child) { |
27 | return child ? sk_sp<TrimEffect>(new TrimEffect(std::move(child))) : nullptr; |
28 | } |
29 | |
30 | ~TrimEffect() override; |
31 | |
32 | SG_ATTRIBUTE(Start , SkScalar , fStart ) |
33 | SG_ATTRIBUTE(Stop , SkScalar , fStop ) |
34 | SG_ATTRIBUTE(Mode , SkTrimPathEffect::Mode, fMode ) |
35 | |
36 | protected: |
37 | void onClip(SkCanvas*, bool antiAlias) const override; |
38 | void onDraw(SkCanvas*, const SkPaint&) const override; |
39 | bool onContains(const SkPoint&) const override; |
40 | |
41 | SkRect onRevalidate(InvalidationController*, const SkMatrix&) override; |
42 | SkPath onAsPath() const override; |
43 | |
44 | private: |
45 | explicit TrimEffect(sk_sp<GeometryNode>); |
46 | |
47 | const sk_sp<GeometryNode> fChild; |
48 | |
49 | SkPath fTrimmedPath; |
50 | SkScalar fStart = 0, |
51 | fStop = 1; |
52 | SkTrimPathEffect::Mode fMode = SkTrimPathEffect::Mode::kNormal; |
53 | |
54 | using INHERITED = GeometryNode; |
55 | }; |
56 | |
57 | } // namespace sksg |
58 | |
59 | #endif // SkSGTrimEffect_DEFINED |
60 | |