/*

 * Copyright 2015 Google Inc.

 *

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

 * found in the LICENSE file.

 */

#ifndef SkBigPicture_DEFINED

#define SkBigPicture_DEFINED

#include "include/core/SkBBHFactory.h"

#include "include/core/SkPicture.h"

#include "include/core/SkRect.h"

#include "include/core/SkRefCnt.h"

#include "include/private/base/SkNoncopyable.h"

#include "include/private/base/SkTemplates.h"

#include "src/core/SkRecord.h"

#include <cstddef>

#include <memory>

class SkCanvas;

// An implementation of SkPicture supporting an arbitrary number of drawing commands.

// This is called "big" because there used to be a "mini" that only supported a subset of the

// calls as an optimization.

class SkBigPicture final : public SkPicture {

public:

    // An array of refcounted const SkPicture pointers.

    class SnapshotArray : ::SkNoncopyable {

    public:

        SnapshotArray(const SkPicture* pics[], int count) : fPics(pics), fCount(count) {}

        ~SnapshotArray() { for (int i = 0; i < fCount; i++) { fPics[i]->unref(); } }

        const SkPicture* const* begin() const { return fPics; }

        int count() const { return fCount; }

    private:

        skia_private::AutoTMalloc<const SkPicture*> fPics;

        int fCount;

    };

    SkBigPicture(const SkRect& cull,

                 sk_sp<SkRecord>,

                 std::unique_ptr<SnapshotArray>,

                 sk_sp<SkBBoxHierarchy>,

                 size_t approxBytesUsedBySubPictures);

// SkPicture overrides

    void playback(SkCanvas*, AbortCallback*) const override;

    SkRect cullRect() const override;

    int approximateOpCount(bool nested) const override;

    size_t approximateBytesUsed() const override;

    const SkBigPicture* asSkBigPicture() const override { return this; }

// Used by GrRecordReplaceDraw

    const SkBBoxHierarchy* bbh() const { return fBBH.get(); }

    const SkRecord*     record() const { return fRecord.get(); }

private:

    int drawableCount() const;

    SkPicture const* const* drawablePicts() const;

    const SkRect                         fCullRect;

    const size_t                         fApproxBytesUsedBySubPictures;

    sk_sp<const SkRecord>                fRecord;

    std::unique_ptr<const SnapshotArray> fDrawablePicts;

    sk_sp<const SkBBoxHierarchy>         fBBH;

};

#endif//SkBigPicture_DEFINED