chromium/third_party/blink/renderer/core/paint/fragment_data.h

// Copyright 2017 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef THIRD_PARTY_BLINK_RENDERER_CORE_PAINT_FRAGMENT_DATA_H_
#define THIRD_PARTY_BLINK_RENDERER_CORE_PAINT_FRAGMENT_DATA_H_

#include <optional>

#include "third_party/blink/renderer/core/core_export.h"
#include "third_party/blink/renderer/core/layout/geometry/physical_rect.h"
#include "third_party/blink/renderer/core/paint/object_paint_properties.h"
#include "third_party/blink/renderer/platform/graphics/paint/cull_rect.h"
#include "third_party/blink/renderer/platform/graphics/paint/property_tree_state.h"
#include "third_party/blink/renderer/platform/heap/collection_support/heap_vector.h"
#include "third_party/blink/renderer/platform/heap/garbage_collected.h"
#include "third_party/blink/renderer/platform/heap/member.h"
#include "third_party/blink/renderer/platform/heap/visitor.h"
#include "third_party/blink/renderer/platform/wtf/allocator/allocator.h"

namespace blink {

class PaintLayer;
struct StickyPositionScrollingConstraints;

// Represents the data for a particular fragment of a LayoutObject.
// See README.md.
class CORE_EXPORT FragmentData : public GarbageCollected<FragmentData> { … };

// The first FragmentData entry associated with a LayoutObject. Provides some
// list functionality, to manipulate the list of FragmentData entries.
// Invariant: There's always at least one FragmentData entry. As such, Shrink(0)
// is forbidden, for instance. It's very common to have just one FragmentData
// entry. So the the first one is stored directly in FragmentData(Head). Any
// additional entries are stored in the first FragmentData's
// rare_data_.additional_fragments.
class CORE_EXPORT FragmentDataList final : public FragmentData { … };

}  // namespace blink

#endif  // THIRD_PARTY_BLINK_RENDERER_CORE_PAINT_FRAGMENT_DATA_H_