1 | /* |
2 | * Copyright (C) 2006 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. ``AS IS'' AND ANY |
14 | * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
15 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
16 | * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR |
17 | * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, |
18 | * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
19 | * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR |
20 | * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY |
21 | * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
22 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
23 | * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
24 | */ |
25 | |
26 | #pragma once |
27 | |
28 | #include <cstdint> |
29 | #include <wtf/Assertions.h> |
30 | |
31 | namespace WebCore { |
32 | |
33 | enum class ScrollType : uint8_t { |
34 | User, |
35 | Programmatic |
36 | }; |
37 | |
38 | enum ScrollDirection : uint8_t { |
39 | ScrollUp, |
40 | ScrollDown, |
41 | ScrollLeft, |
42 | ScrollRight |
43 | }; |
44 | |
45 | enum ScrollLogicalDirection : uint8_t { |
46 | ScrollBlockDirectionBackward, |
47 | ScrollBlockDirectionForward, |
48 | ScrollInlineDirectionBackward, |
49 | ScrollInlineDirectionForward |
50 | }; |
51 | |
52 | enum class ScrollPositionClamp : uint8_t { |
53 | None, |
54 | ToContentEdges, |
55 | }; |
56 | |
57 | inline ScrollDirection logicalToPhysical(ScrollLogicalDirection direction, bool isVertical, bool isFlipped) |
58 | { |
59 | switch (direction) { |
60 | case ScrollBlockDirectionBackward: { |
61 | if (isVertical) { |
62 | if (!isFlipped) |
63 | return ScrollUp; |
64 | return ScrollDown; |
65 | } else { |
66 | if (!isFlipped) |
67 | return ScrollLeft; |
68 | return ScrollRight; |
69 | } |
70 | break; |
71 | } |
72 | case ScrollBlockDirectionForward: { |
73 | if (isVertical) { |
74 | if (!isFlipped) |
75 | return ScrollDown; |
76 | return ScrollUp; |
77 | } else { |
78 | if (!isFlipped) |
79 | return ScrollRight; |
80 | return ScrollLeft; |
81 | } |
82 | break; |
83 | } |
84 | case ScrollInlineDirectionBackward: { |
85 | if (isVertical) { |
86 | if (!isFlipped) |
87 | return ScrollLeft; |
88 | return ScrollRight; |
89 | } else { |
90 | if (!isFlipped) |
91 | return ScrollUp; |
92 | return ScrollDown; |
93 | } |
94 | break; |
95 | } |
96 | case ScrollInlineDirectionForward: { |
97 | if (isVertical) { |
98 | if (!isFlipped) |
99 | return ScrollRight; |
100 | return ScrollLeft; |
101 | } else { |
102 | if (!isFlipped) |
103 | return ScrollDown; |
104 | return ScrollUp; |
105 | } |
106 | break; |
107 | } |
108 | default: |
109 | ASSERT_NOT_REACHED(); |
110 | break; |
111 | } |
112 | return ScrollUp; |
113 | } |
114 | |
115 | enum ScrollGranularity : uint8_t { |
116 | ScrollByLine, |
117 | ScrollByPage, |
118 | ScrollByDocument, |
119 | ScrollByPixel |
120 | }; |
121 | |
122 | enum ScrollElasticity : uint8_t { |
123 | ScrollElasticityAutomatic, |
124 | ScrollElasticityNone, |
125 | ScrollElasticityAllowed |
126 | }; |
127 | |
128 | enum ScrollbarOrientation : uint8_t { |
129 | HorizontalScrollbar, |
130 | VerticalScrollbar |
131 | }; |
132 | |
133 | enum ScrollbarMode : uint8_t { |
134 | ScrollbarAuto, |
135 | ScrollbarAlwaysOff, |
136 | ScrollbarAlwaysOn |
137 | }; |
138 | |
139 | enum ScrollbarControlSize : uint8_t { |
140 | RegularScrollbar, |
141 | SmallScrollbar |
142 | }; |
143 | |
144 | enum class ScrollbarExpansionState : uint8_t { |
145 | Regular, |
146 | Expanded |
147 | }; |
148 | |
149 | enum class ScrollEventAxis : uint8_t { |
150 | Horizontal, |
151 | Vertical |
152 | }; |
153 | |
154 | enum ScrollbarControlStateMask { |
155 | ActiveScrollbarState = 1, |
156 | EnabledScrollbarState = 1 << 1, |
157 | PressedScrollbarState = 1 << 2 |
158 | }; |
159 | |
160 | enum ScrollbarPart { |
161 | NoPart = 0, |
162 | BackButtonStartPart = 1, |
163 | ForwardButtonStartPart = 1 << 1, |
164 | BackTrackPart = 1 << 2, |
165 | ThumbPart = 1 << 3, |
166 | ForwardTrackPart = 1 << 4, |
167 | BackButtonEndPart = 1 << 5, |
168 | ForwardButtonEndPart = 1 << 6, |
169 | ScrollbarBGPart = 1 << 7, |
170 | TrackBGPart = 1 << 8, |
171 | AllParts = 0xffffffff |
172 | }; |
173 | |
174 | enum ScrollbarButtonsPlacement : uint8_t { |
175 | ScrollbarButtonsNone, |
176 | ScrollbarButtonsSingle, |
177 | ScrollbarButtonsDoubleStart, |
178 | ScrollbarButtonsDoubleEnd, |
179 | ScrollbarButtonsDoubleBoth |
180 | }; |
181 | |
182 | enum class ScrollbarStyle : uint8_t { |
183 | AlwaysVisible, |
184 | Overlay |
185 | }; |
186 | |
187 | enum ScrollbarOverlayStyle: uint8_t { |
188 | ScrollbarOverlayStyleDefault, |
189 | ScrollbarOverlayStyleDark, |
190 | ScrollbarOverlayStyleLight |
191 | }; |
192 | |
193 | enum ScrollPinningBehavior : uint8_t { |
194 | DoNotPin, |
195 | PinToTop, |
196 | PinToBottom |
197 | }; |
198 | |
199 | enum class ScrollClamping : uint8_t { |
200 | Unclamped, |
201 | Clamped |
202 | }; |
203 | |
204 | enum ScrollBehaviorForFixedElements : uint8_t { |
205 | StickToDocumentBounds, |
206 | StickToViewportBounds |
207 | }; |
208 | |
209 | enum class ScrollbarButtonPressAction : uint8_t { |
210 | None, |
211 | CenterOnThumb, |
212 | StartDrag, |
213 | Scroll |
214 | }; |
215 | |
216 | enum class SelectionRevealMode : uint8_t { |
217 | Reveal, |
218 | RevealUpToMainFrame, // Scroll overflow and iframes, but not the main frame. |
219 | DoNotReveal |
220 | }; |
221 | |
222 | enum class ScrollPositioningBehavior : uint8_t { |
223 | None, |
224 | Moves, |
225 | Stationary |
226 | }; |
227 | |
228 | using ScrollbarControlState = unsigned; |
229 | using ScrollbarControlPartMask = unsigned; |
230 | using ScrollingNodeID = uint64_t; |
231 | |
232 | } // namespace WebCore |
233 | |