blob: 7c66719e6c07a51607f25dda73525ad0c0333f09 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
|
// Copyright 2018 The Chromium Authors. All rights reserved.
// 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_ANIMATION_SCROLL_TIMELINE_UTIL_H_
#define THIRD_PARTY_BLINK_RENDERER_CORE_ANIMATION_SCROLL_TIMELINE_UTIL_H_
#include <memory>
#include "base/optional.h"
#include "cc/animation/scroll_timeline.h"
#include "third_party/blink/renderer/core/animation/scroll_timeline.h"
#include "third_party/blink/renderer/core/core_export.h"
#include "third_party/blink/renderer/platform/animation/compositor_animation.h"
namespace blink {
using CompositorScrollTimeline = cc::ScrollTimeline;
class AnimationTimeline;
class ComputedStyle;
class Node;
namespace scroll_timeline_util {
// Converts the input timeline to the compositor representation of a
// ScrollTimeline. Returns nullptr if the input is not a ScrollTimeline.
scoped_refptr<CompositorScrollTimeline> CORE_EXPORT
ToCompositorScrollTimeline(AnimationTimeline*);
// Retrieves the 'scroll' compositor element id for the input node, or
// base::nullopt if it does not exist.
base::Optional<CompositorElementId> CORE_EXPORT
GetCompositorScrollElementId(const Node*);
// Convert the blink concept of a ScrollTimeline orientation into the cc one.
//
// This implements a subset of the conversions documented in
// https://drafts.csswg.org/css-writing-modes-3/#logical-to-physical
CompositorScrollTimeline::ScrollDirection CORE_EXPORT
ConvertOrientation(ScrollTimeline::ScrollDirection, const ComputedStyle*);
double ComputeProgress(double current_offset,
const WTF::Vector<double>& resolved_offsets);
} // namespace scroll_timeline_util
} // namespace blink
#endif // THIRD_PARTY_BLINK_RENDERER_CORE_ANIMATION_SCROLL_TIMELINE_UTIL_H_
|
