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 "SkSGRenderNode.h" 12 13 #include <vector> 14 15 namespace sksg { 16 17 /** 18 * Concrete node, grouping together multiple descendants. 19 */ 20 class Group : public RenderNode { 21 public: 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 37 protected: 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 46 private: 47 std::vector<sk_sp<RenderNode>> fChildren; 48 49 typedef RenderNode INHERITED; 50 }; 51 52 } // namespace sksg 53 54 #endif // SkSGGroup_DEFINED 55
