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 SkSGMaskEffect_DEFINED 9 #define SkSGMaskEffect_DEFINED 10 11 #include "SkSGEffectNode.h" 12 13 namespace sksg { 14 15 /** 16 * Concrete Effect node, applying a mask to its descendants. 17 * 18 */ 19 class MaskEffect final : public EffectNode { 20 public: 21 static sk_sp<MaskEffect> Make(sk_sp<RenderNode> child, sk_sp<RenderNode> mask) { 22 return (child && mask) 23 ? sk_sp<MaskEffect>(new MaskEffect(std::move(child), std::move(mask))) 24 : nullptr; 25 } 26 27 ~MaskEffect() override; 28 29 protected: 30 MaskEffect(sk_sp<RenderNode>, sk_sp<RenderNode> mask); 31 32 void onRender(SkCanvas*) const override; 33 34 SkRect onRevalidate(InvalidationController*, const SkMatrix&) override; 35 36 private: 37 sk_sp<RenderNode> fMaskNode; 38 39 typedef EffectNode INHERITED; 40 }; 41 42 } // namespace sksg 43 44 #endif // SkSGMaskEffect_DEFINED 45
