1 | /* |
2 | * Copyright (C) 2019 Apple Inc. All rights reserved. |
3 | * |
4 | * Redistribution and use in source and binary forms, with or without |
5 | * modification, are permitted provided that the following conditions |
6 | * are met: |
7 | * 1. Redistributions of source code must retain the above copyright |
8 | * notice, this list of conditions and the following disclaimer. |
9 | * 2. Redistributions in binary form must reproduce the above copyright |
10 | * notice, this list of conditions and the following disclaimer in the |
11 | * documentation and/or other materials provided with the distribution. |
12 | * |
13 | * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS'' |
14 | * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, |
15 | * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
16 | * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS |
17 | * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
18 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
19 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
20 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
21 | * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
22 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF |
23 | * THE POSSIBILITY OF SUCH DAMAGE. |
24 | */ |
25 | |
26 | #pragma once |
27 | |
28 | #include "ScrollTypes.h" |
29 | |
30 | namespace WebCore { |
31 | |
32 | typedef unsigned SynchronousScrollingReasons; |
33 | |
34 | enum class ScrollingNodeType : uint8_t { |
35 | MainFrame, |
36 | Subframe, |
37 | FrameHosting, |
38 | Overflow, |
39 | Fixed, |
40 | Sticky, |
41 | Positioned, |
42 | }; |
43 | |
44 | enum ScrollingStateTreeAsTextBehaviorFlags { |
45 | ScrollingStateTreeAsTextBehaviorNormal = 0, |
46 | ScrollingStateTreeAsTextBehaviorIncludeLayerIDs = 1 << 0, |
47 | ScrollingStateTreeAsTextBehaviorIncludeNodeIDs = 1 << 1, |
48 | ScrollingStateTreeAsTextBehaviorIncludeLayerPositions = 1 << 2, |
49 | ScrollingStateTreeAsTextBehaviorDebug = ScrollingStateTreeAsTextBehaviorIncludeLayerIDs | ScrollingStateTreeAsTextBehaviorIncludeNodeIDs | ScrollingStateTreeAsTextBehaviorIncludeLayerPositions |
50 | }; |
51 | typedef unsigned ScrollingStateTreeAsTextBehavior; |
52 | |
53 | enum class ScrollingLayerPositionAction { |
54 | Set, |
55 | SetApproximate, |
56 | Sync |
57 | }; |
58 | |
59 | struct ScrollableAreaParameters { |
60 | ScrollElasticity horizontalScrollElasticity { ScrollElasticityNone }; |
61 | ScrollElasticity verticalScrollElasticity { ScrollElasticityNone }; |
62 | |
63 | ScrollbarMode horizontalScrollbarMode { ScrollbarAuto }; |
64 | ScrollbarMode verticalScrollbarMode { ScrollbarAuto }; |
65 | |
66 | bool hasEnabledHorizontalScrollbar { false }; |
67 | bool hasEnabledVerticalScrollbar { false }; |
68 | |
69 | bool horizontalScrollbarHiddenByStyle { false }; |
70 | bool verticalScrollbarHiddenByStyle { false }; |
71 | |
72 | bool useDarkAppearanceForScrollbars { false }; |
73 | |
74 | bool operator==(const ScrollableAreaParameters& other) const |
75 | { |
76 | return horizontalScrollElasticity == other.horizontalScrollElasticity |
77 | && verticalScrollElasticity == other.verticalScrollElasticity |
78 | && horizontalScrollbarMode == other.horizontalScrollbarMode |
79 | && verticalScrollbarMode == other.verticalScrollbarMode |
80 | && hasEnabledHorizontalScrollbar == other.hasEnabledHorizontalScrollbar |
81 | && hasEnabledVerticalScrollbar == other.hasEnabledVerticalScrollbar |
82 | && useDarkAppearanceForScrollbars == other.useDarkAppearanceForScrollbars; |
83 | } |
84 | }; |
85 | |
86 | enum class ScrollingEventResult { |
87 | DidNotHandleEvent, |
88 | DidHandleEvent, |
89 | SendToMainThread |
90 | }; |
91 | |
92 | enum class ViewportRectStability { |
93 | Stable, |
94 | Unstable, |
95 | ChangingObscuredInsetsInteractively // This implies Unstable. |
96 | }; |
97 | |
98 | } |
99 | |