serial_utils.h | Explore in Territory

// Copyright 2019 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef COMPONENTS_PAINT_PREVIEW_COMMON_SERIAL_UTILS_H_
#define COMPONENTS_PAINT_PREVIEW_COMMON_SERIAL_UTILS_H_

#include <memory>

#include "base/containers/flat_map.h"
#include "base/containers/flat_set.h"
#include "base/files/file.h"
#include "base/memory/raw_ptr.h"
#include "base/unguessable_token.h"
#include "components/paint_preview/common/glyph_usage.h"
#include "third_party/skia/include/core/SkPicture.h"
#include "third_party/skia/include/core/SkRefCnt.h"
#include "third_party/skia/include/core/SkSerialProcs.h"
#include "third_party/skia/include/core/SkTypeface.h"
#include "ui/gfx/geometry/rect_f.h"

namespace paint_preview {

struct PictureSerializationContext { … };

// Maps a typeface ID to a glyph usage tracker.
TypefaceUsageMap;

// Tracks typeface deduplication and handles subsetting.
struct TypefaceSerializationContext { … };

struct ImageSerializationContext { … };

// Maps a content ID to a clip rect.
DeserializationContext;

// A pair that contains a frame's |SkPicture| and its associated scroll offsets.
// Used in |LoadedFramesDeserialContext| to correctly replay the scroll state
// for subframes.
struct FrameAndScrollOffsets { … };

// Maps a content ID to a frame's picture. A frame's subframes should be
// loaded into this context before |MakeDeserialProcs| is called to ensure
// that the resulting |SkPicture| contains all subframes.
LoadedFramesDeserialContext;

// Creates a no-op SkPicture.
sk_sp<SkPicture> MakeEmptyPicture();

// Creates a SkSerialProcs object. The object *does not* copy |picture_ctx| or
// |typeface_ctx| so they must outlive the use of the returned object.
SkSerialProcs MakeSerialProcs(PictureSerializationContext* picture_ctx,
                              TypefaceSerializationContext* typeface_ctx,
                              ImageSerializationContext* image_ctx);

// Creates a SkDeserialProcs object. The object *does not* copy |ctx| so |ctx|
// must outlive the use of the returned object. |ctx| will be filled as pictures
// are being deserialized. Subframes will be filled with |MakeEmptyPicture|.
SkDeserialProcs MakeDeserialProcs(DeserializationContext* ctx);

// Creates a SkDeserialProcs object. The object *does not* copy |ctx| so |ctx|
// must outlive the use of the returned object. |ctx| will be referenced for
// subframes as pictures are being serialized. If a subframe does not exist in
// |ctx|, its rectangle will be fillde with |MakeEmptyPicture|.
SkDeserialProcs MakeDeserialProcs(LoadedFramesDeserialContext* ctx);

}  // namespace paint_preview

#endif  // COMPONENTS_PAINT_PREVIEW_COMMON_SERIAL_UTILS_H_
chromium/components/paint_preview/common/serial_utils.h
