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 SkSGClipEffect_DEFINED
9 #define SkSGClipEffect_DEFINED
10 
11 #include "modules/sksg/include/SkSGEffectNode.h"
12 
13 namespace sksg {
14 
15 class GeometryNode;
16 
17 /**
18  * Concrete Effect node, applying a clip to its descendants.
19  *
20  */
21 class ClipEffect final : public EffectNode {
22 public:
23     static sk_sp<ClipEffect> Make(sk_sp<RenderNode> child, sk_sp<GeometryNode> clip,
24                                   bool aa = false) {
25         return (child && clip)
26             ? sk_sp<ClipEffect>(new ClipEffect(std::move(child), std::move(clip), aa))
27             : nullptr;
28     }
29 
30     ~ClipEffect() override;
31 
32 protected:
33     ClipEffect(sk_sp<RenderNode>, sk_sp<GeometryNode>, bool aa);
34 
35     void onRender(SkCanvas*, const RenderContext*) const override;
36     const RenderNode* onNodeAt(const SkPoint&)     const override;
37 
38     SkRect onRevalidate(InvalidationController*, const SkMatrix&) override;
39 
40 private:
41     const sk_sp<GeometryNode> fClipNode;
42     const bool                fAntiAlias;
43 
44     bool                      fNoop = false;
45 
46     using INHERITED = EffectNode;
47 };
48 
49 } // namespace sksg
50 
51 #endif // SkSGClipEffect_DEFINED
52