SkSGEffectNode.h

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/*
 * Copyright 2017 Google Inc.
 *
 * Use of this source code is governed by a BSD-style license that can be
 * found in the LICENSE file.
 */
 
#ifndef SkSGEffectNode_DEFINED
#define SkSGEffectNode_DEFINED
 
#include "include/core/SkRect.h"
#include "include/core/SkRefCnt.h"
#include "modules/sksg/include/SkSGRenderNode.h"
 
#include <cstdint>
 
class SkCanvas;
class SkMatrix;
struct SkPoint;
 
namespace sksg {
class InvalidationController;
 
/**
 * Base class for nodes which apply some transformation when rendering
 * their descendants.
 *
 * This includes transforms, clipping, filters, etc.
 */
class EffectNode : public RenderNode {
protected:
    explicit EffectNode(sk_sp<RenderNode>, uint32_t inval_traits = 0);
    ~EffectNode() override;
 
    void onRender(SkCanvas*, const RenderContext*) const override;
    const RenderNode* onNodeAt(const SkPoint&)     const override;
 
    SkRect onRevalidate(InvalidationController*, const SkMatrix&) override;
 
    const sk_sp<RenderNode>& getChild() const { return fChild; }
 
private:
    sk_sp<RenderNode> fChild;
 
    using INHERITED = RenderNode;
};
 
} // namespace sksg
 
#endif // SkSGEffectNode_DEFINED