1 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
2 /* vim: set ts=8 sts=2 et sw=2 tw=80: */
3 /* This Source Code Form is subject to the terms of the Mozilla Public
4 * License, v. 2.0. If a copy of the MPL was not distributed with this
5 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
7 /* types defined to pass values through Gecko_* and Servo_* FFI functions */
9 #ifndef mozilla_ServoTypes_h
10 #define mozilla_ServoTypes_h
12 #include "mozilla/RefPtr.h"
13 #include "mozilla/TypedEnumBits.h"
14 #include "nsCSSPropertyID.h"
16 #include "X11UndefineNone.h"
19 struct StyleLockedFontFaceRule
;
20 enum class StyleOrigin
: uint8_t;
21 struct LangGroupFontPrefs
;
22 } // namespace mozilla
24 // used for associating origin with specific @font-face rules
25 struct nsFontFaceRuleContainer
{
26 RefPtr
<mozilla::StyleLockedFontFaceRule
> mRule
;
27 mozilla::StyleOrigin mOrigin
;
32 // Indicates whether the Servo style system should expect the style on an
33 // element to have already been resolved (i.e. via a parallel traversal), or
34 // whether it may be lazily computed.
35 enum class LazyComputeBehavior
{
40 // Various flags for the servo traversal.
41 enum class ServoTraversalFlags
: uint32_t {
43 // Perform animation processing but not regular styling.
44 AnimationOnly
= 1 << 0,
45 // Traverses as normal mode but tries to update all CSS animations.
46 ForCSSRuleChanges
= 1 << 1,
47 // The final animation-only traversal, which shouldn't really care about other
48 // style changes anymore.
49 FinalAnimationTraversal
= 1 << 2,
50 // Allows the traversal to run in parallel if there are sufficient cores on
52 ParallelTraversal
= 1 << 7,
53 // Flush throttled animations. By default, we only update throttled animations
54 // when we have other non-throttled work to do. With this flag, we
55 // unconditionally tick and process them.
56 FlushThrottledAnimations
= 1 << 8,
59 MOZ_MAKE_ENUM_CLASS_BITWISE_OPERATORS(ServoTraversalFlags
)
61 // Indicates which rules should be included when performing selecting matching
62 // on an element. DefaultOnly is used to exclude all rules except for those
63 // that come from UA style sheets, and is used to implemented
64 // getDefaultComputedStyle.
65 enum class StyleRuleInclusion
{
70 // Represents which tasks are performed in a SequentialTask of UpdateAnimations.
71 enum class UpdateAnimationsTasks
: uint8_t {
72 CSSAnimations
= 1 << 0,
73 CSSTransitions
= 1 << 1,
74 EffectProperties
= 1 << 2,
75 CascadeResults
= 1 << 3,
76 DisplayChangedFromNone
= 1 << 4,
77 ScrollTimelines
= 1 << 5,
78 ViewTimelines
= 1 << 6,
81 MOZ_MAKE_ENUM_CLASS_BITWISE_OPERATORS(UpdateAnimationsTasks
)
83 // The kind of style we're generating when requesting Servo to give us an
85 enum class InheritTarget
{
86 // We're requesting a text style.
88 // We're requesting a first-letter continuation frame style.
89 FirstLetterContinuation
,
90 // We're requesting a style for a placeholder frame.
94 // Represents values for interaction media features.
95 // https://drafts.csswg.org/mediaqueries-4/#mf-interaction
96 enum class PointerCapabilities
: uint8_t {
103 MOZ_MAKE_ENUM_CLASS_BITWISE_OPERATORS(PointerCapabilities
)
105 // These measurements are obtained for both the UA cache and the Stylist, but
106 // not all the fields are used in both cases.
107 class ServoStyleSetSizes
{
109 size_t mRuleTree
; // Stylist-only
110 size_t mPrecomputedPseudos
; // UA cache-only
111 size_t mElementAndPseudosMaps
; // Used for both
112 size_t mInvalidationMap
; // Used for both
113 size_t mRevalidationSelectors
; // Used for both
114 size_t mOther
; // Used for both
118 mPrecomputedPseudos(0),
119 mElementAndPseudosMaps(0),
121 mRevalidationSelectors(0),
125 // A callback that can be sent via FFI which will be invoked _right before_
126 // being mutated, and at most once.
127 struct DeclarationBlockMutationClosure
{
128 // The callback function. The first argument is `data`, the second is the
129 // property id that changed.
130 void (*function
)(void*, nsCSSPropertyID
) = nullptr;
131 void* data
= nullptr;
134 struct MediumFeaturesChangedResult
{
135 bool mAffectsDocumentRules
;
136 bool mAffectsNonDocumentRules
;
139 } // namespace mozilla
141 #endif // mozilla_ServoTypes_h