chromium/third_party/blink/renderer/core/layout/anchor_position_scroll_data.cc

// Copyright 2022 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#include "third_party/blink/renderer/core/layout/anchor_position_scroll_data.h"

#include "third_party/blink/renderer/core/dom/document.h"
#include "third_party/blink/renderer/core/frame/local_frame_view.h"
#include "third_party/blink/renderer/core/layout/anchor_position_visibility_observer.h"
#include "third_party/blink/renderer/core/layout/layout_view.h"
#include "third_party/blink/renderer/core/layout/non_overflowing_scroll_range.h"
#include "third_party/blink/renderer/core/paint/paint_layer.h"
#include "third_party/blink/renderer/core/paint/paint_layer_scrollable_area.h"

namespace blink {

namespace {

// Finds the LayoutObject of the anchor element given by position-anchor.
const LayoutObject* PositionAnchorObject(const LayoutBox& box) { … }

const HeapVector<NonOverflowingScrollRange>* GetNonOverflowingScrollRanges(
    const LayoutObject* layout_object) { … }

// First return value for x axis, second for y axis.
std::pair<bool, bool> CheckHasDefaultAnchorReferences(
    const LayoutObject* layout_object) { … }

}  // namespace

AnchorPositionScrollData::AnchorPositionScrollData(Element* anchored_element)
    : … { … }

AnchorPositionScrollData::~AnchorPositionScrollData() = default;

bool AnchorPositionScrollData::IsActive() const { … }

gfx::Vector2dF AnchorPositionScrollData::TotalOffset(
    const LayoutObject& anchor_object) const { … }

AnchorPositionScrollData::AdjustmentData
AnchorPositionScrollData::ComputeAdjustmentContainersData(
    const LayoutObject& anchor) const { … }

AnchorPositionScrollData::AdjustmentData
AnchorPositionScrollData::ComputeDefaultAnchorAdjustmentData() const { … }

AnchorPositionScrollData::SnapshotDiff
AnchorPositionScrollData::TakeAndCompareSnapshot(bool update) { … }

bool AnchorPositionScrollData::IsFallbackPositionValid(
    const AdjustmentData& new_adjustment_data) const { … }

void AnchorPositionScrollData::UpdateSnapshot() { … }

bool AnchorPositionScrollData::ValidateSnapshot() { … }

bool AnchorPositionScrollData::ShouldScheduleNextService() { … }

AnchorPositionVisibilityObserver&
AnchorPositionScrollData::EnsureAnchorPositionVisibilityObserver() { … }

void AnchorPositionScrollData::InvalidateLayoutAndPaint() { … }

void AnchorPositionScrollData::InvalidatePaint() { … }

void AnchorPositionScrollData::Trace(Visitor* visitor) const { … }

}  // namespace blink