chromium/third_party/blink/renderer/core/animation/scroll_timeline.cc

// 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.

#include "third_party/blink/renderer/core/animation/scroll_timeline.h"

#include <optional>

#include "third_party/blink/renderer/bindings/core/v8/v8_scroll_timeline_options.h"
#include "third_party/blink/renderer/core/animation/scroll_timeline_util.h"
#include "third_party/blink/renderer/core/dom/document.h"
#include "third_party/blink/renderer/core/dom/element.h"
#include "third_party/blink/renderer/core/layout/layout_box.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 {

ScrollOrientation ToPhysicalScrollOrientation(ScrollAxis axis,
                                              const LayoutBox& source_box) { … }

Node* ResolveSource(Element* source) { … }

}  // namespace

ScrollTimeline* ScrollTimeline::Create(Document& document,
                                       ScrollTimelineOptions* options,
                                       ExceptionState& exception_state) { … }

ScrollTimeline* ScrollTimeline::Create(Document* document,
                                       Element* source,
                                       ScrollAxis axis) { … }

ScrollTimeline::ScrollTimeline(Document* document,
                               ReferenceType reference_type,
                               Element* reference,
                               ScrollAxis axis)
    : … { … }

Element* ScrollTimeline::RetainingElement() const { … }

// TODO(crbug.com/1060384): This section is missing from the spec rewrite.
// Resolved to remove the before and after phases in
// https://github.com/w3c/csswg-drafts/issues/7240.
// https://drafts.csswg.org/scroll-animations-1/#current-time-algorithm
ScrollTimeline::TimelineState ScrollTimeline::ComputeTimelineState() const { … }

void ScrollTimeline::CalculateOffsets(PaintLayerScrollableArea* scrollable_area,
                                      ScrollOrientation physical_orientation,
                                      TimelineState* state) const { … }

Element* ScrollTimeline::source() const { … }

Element* ScrollTimeline::ComputeSource() const { … }

Element* ScrollTimeline::ComputeSourceNoLayout() const { … }

void ScrollTimeline::AnimationAttached(Animation* animation) { … }

void ScrollTimeline::AnimationDetached(Animation* animation) { … }

Node* ScrollTimeline::ComputeResolvedSource() const { … }

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

bool ScrollTimeline::Matches(ReferenceType reference_type,
                             Element* reference_element,
                             ScrollAxis axis) const { … }

ScrollAxis ScrollTimeline::GetAxis() const { … }

std::optional<double> ScrollTimeline::GetMaximumScrollPosition() const { … }

}  // namespace blink