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 SkSGScene_DEFINED 9 #define SkSGScene_DEFINED 10 11 #include "SkRefCnt.h" 12 #include "SkTypes.h" 13 14 #include <memory> 15 #include <vector> 16 17 class SkCanvas; 18 19 namespace sksg { 20 21 class RenderNode; 22 23 /** 24 * Base class for animators. 25 * 26 */ 27 class Animator : public SkNoncopyable { 28 public: 29 virtual ~Animator(); 30 31 void tick(float t); 32 33 protected: 34 Animator(); 35 36 virtual void onTick(float t) = 0; 37 38 private: 39 using INHERITED = SkNoncopyable; 40 }; 41 42 using AnimatorList = std::vector<std::unique_ptr<Animator>>; 43 44 class GroupAnimator : public Animator { 45 protected: 46 explicit GroupAnimator(AnimatorList&&); 47 48 void onTick(float t) override; 49 50 private: 51 const AnimatorList fAnimators; 52 53 using INHERITED = Animator; 54 }; 55 56 /** 57 * Holds a scene root and a list of animators. 58 * 59 * Provides high-level mehods for driving rendering and animations. 60 * 61 */ 62 class Scene final : SkNoncopyable { 63 public: 64 static std::unique_ptr<Scene> Make(sk_sp<RenderNode> root, AnimatorList&& animators); 65 ~Scene(); 66 67 void render(SkCanvas*) const; 68 void animate(float t); 69 70 void setShowInval(bool show) { fShowInval = show; } 71 72 private: 73 Scene(sk_sp<RenderNode> root, AnimatorList&& animators); 74 75 const sk_sp<RenderNode> fRoot; 76 const AnimatorList fAnimators; 77 78 bool fShowInval = false; 79 80 using INHERITED = SkNoncopyable; 81 }; 82 83 } // namespace sksg 84 85 #endif // SkSGScene_DEFINED 86
