/*

 * Copyright 2018 Google Inc.

 *

 * Use of this source code is governed by a BSD-style license that can be

 * found in the LICENSE file.

 */

#ifndef SkSGClipEffect_DEFINED

#define SkSGClipEffect_DEFINED

#include "include/core/SkRect.h"

#include "include/core/SkRefCnt.h"

#include "modules/sksg/include/SkSGEffectNode.h"

#include "modules/sksg/include/SkSGGeometryNode.h"

#include "modules/sksg/include/SkSGRenderNode.h"

#include <utility>

class SkCanvas;

class SkMatrix;

struct SkPoint;

namespace sksg {

class InvalidationController;

/**

 * Concrete Effect node, applying a clip to its descendants.

 *

 */

class ClipEffect final : public EffectNode {

public:

    static sk_sp<ClipEffect> Make(sk_sp<RenderNode> child, sk_sp<GeometryNode> clip,

                                  bool aa = false, bool force_clip = false) {

        return (child && clip)

            ? sk_sp<ClipEffect>(new ClipEffect(std::move(child), std::move(clip), aa, force_clip))

            : nullptr;

    }

    ~ClipEffect() override;

protected:

    ClipEffect(sk_sp<RenderNode>, sk_sp<GeometryNode>, bool aa, bool force_clip);

    void onRender(SkCanvas*, const RenderContext*) const override;

    const RenderNode* onNodeAt(const SkPoint&)     const override;

    SkRect onRevalidate(InvalidationController*, const SkMatrix&) override;

private:

    const sk_sp<GeometryNode> fClipNode;

    const bool                fAntiAlias,

                              fForceClip;

    bool                      fNoop = false;

    using INHERITED = EffectNode;

};

}  // namespace sksg

#endif // SkSGClipEffect_DEFINED