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 SkSGGeometryNode_DEFINED
9 #define SkSGGeometryNode_DEFINED
10 
11 #include "modules/sksg/include/SkSGNode.h"
12 
13 class SkCanvas;
14 class SkPaint;
15 class SkPath;
16 
17 namespace sksg {
18 
19 /**
20  * Base class for nodes which provide 'geometry' (as opposed to paint)
21  * for drawing.
22  *
23  * Think SkRect, SkPath, etc.
24  */
25 class GeometryNode : public Node {
26 public:
27     void clip(SkCanvas*, bool antiAlias) const;
28     void draw(SkCanvas*, const SkPaint&) const;
29 
30     bool contains(const SkPoint&) const;
31 
32     SkPath asPath() const;
33 
34 protected:
35     GeometryNode();
36 
37     virtual void onClip(SkCanvas*, bool antiAlias) const = 0;
38 
39     virtual void onDraw(SkCanvas*, const SkPaint&) const = 0;
40 
41     virtual bool onContains(const SkPoint&) const = 0;
42 
43     virtual SkPath onAsPath() const = 0;
44 
45 private:
46     friend class Draw; // wants to know the cached bounds.
47 
48     using INHERITED = Node;
49 };
50 
51 } // namespace sksg
52 
53 #endif // SkSGGeometryNode_DEFINED
54