chromium/third_party/skia/src/utils/SkMultiPictureDocument.cpp

/*
 * Copyright 2016 Google Inc.
 *
 * Use of this source code is governed by a BSD-style license that can be
 * found in the LICENSE file.
 */

#include "include/docs/SkMultiPictureDocument.h"

#include "include/core/SkCanvas.h"
#include "include/core/SkData.h"
#include "include/core/SkDocument.h"
#include "include/core/SkPicture.h"
#include "include/core/SkPictureRecorder.h"
#include "include/core/SkRect.h"
#include "include/core/SkScalar.h"
#include "include/core/SkSerialProcs.h"
#include "include/core/SkStream.h"
#include "include/private/base/SkDebug.h"
#include "include/private/base/SkTArray.h"
#include "include/private/base/SkTo.h"
#include "include/utils/SkNWayCanvas.h"
#include "src/utils/SkMultiPictureDocumentPriv.h"

#include <algorithm>
#include <climits>
#include <cstdint>
#include <cstring>
#include <functional>
#include <utility>

usingnamespaceskia_private;

/*
  File format:
      BEGINNING_OF_FILE:
        kMagic
        uint32_t version_number (==2)
        uint32_t page_count
        {
          float sizeX
          float sizeY
        } * page_count
        skp file
*/

namespace {
// The unique file signature for this file type.
static constexpr char kMagic[] = …;

static constexpr char kEndPage[] = …;

const uint32_t kVersion = …;

static SkSize join(const TArray<SkSize>& sizes) { … }

struct MultiPictureDocument final : public SkDocument { … };

struct PagerCanvas : public SkNWayCanvas { … };

}  // namespace

namespace SkMultiPictureDocument {
sk_sp<SkDocument> Make(SkWStream* dst,
                       const SkSerialProcs* procs,
                       std::function<void(const SkPicture*)> onEndPage) { … }

int ReadPageCount(SkStreamSeekable* src) { … }

bool ReadPageSizes(SkStreamSeekable* stream,
                   SkDocumentPage* dstArray,
                   int dstArrayCount) { … }

bool Read(SkStreamSeekable* src,
          SkDocumentPage* dstArray,
          int dstArrayCount,
          const SkDeserialProcs* procs) { … }
}  // namespace SkMultiPictureDocument