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 SkSGGroup_DEFINED
9#define SkSGGroup_DEFINED
10
11#include "modules/sksg/include/SkSGRenderNode.h"
12
13#include <vector>
14
15namespace sksg {
16
17/**
18 * Concrete node, grouping together multiple descendants.
19 */
20class Group : public RenderNode {
21public:
22 static sk_sp<Group> Make() {
23 return sk_sp<Group>(new Group(std::vector<sk_sp<RenderNode>>()));
24 }
25
26 static sk_sp<Group> Make(std::vector<sk_sp<RenderNode>> children) {
27 return sk_sp<Group>(new Group(std::move(children)));
28 }
29
30 void addChild(sk_sp<RenderNode>);
31 void removeChild(const sk_sp<RenderNode>&);
32
33 size_t size() const { return fChildren.size(); }
34 bool empty() const { return fChildren.empty(); }
35 void clear();
36
37protected:
38 explicit Group(std::vector<sk_sp<RenderNode>>);
39 ~Group() override;
40
41 void onRender(SkCanvas*, const RenderContext*) const override;
42 const RenderNode* onNodeAt(const SkPoint&) const override;
43
44 SkRect onRevalidate(InvalidationController*, const SkMatrix&) override;
45
46private:
47 std::vector<sk_sp<RenderNode>> fChildren;
48 bool fRequiresIsolation = true;
49
50 typedef RenderNode INHERITED;
51};
52
53} // namespace sksg
54
55#endif // SkSGGroup_DEFINED
56