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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
/* types defined to pass values through Gecko_* and Servo_* FFI functions */
#ifndef mozilla_ServoTypes_h
#define mozilla_ServoTypes_h
#include "mozilla/RefPtr.h"
#include "mozilla/TypedEnumBits.h"
#include "nsCSSPropertyID.h"
#include "nsCoord.h"
#include "X11UndefineNone.h"
namespace mozilla {
struct StyleLockedFontFaceRule;
enum class StyleOrigin : uint8_t;
struct LangGroupFontPrefs;
} // namespace mozilla
// used for associating origin with specific @font-face rules
struct nsFontFaceRuleContainer {
RefPtr<mozilla::StyleLockedFontFaceRule> mRule;
mozilla::StyleOrigin mOrigin;
};
namespace mozilla {
// Indicates whether the Servo style system should expect the style on an
// element to have already been resolved (i.e. via a parallel traversal), or
// whether it may be lazily computed.
enum class LazyComputeBehavior {
Allow,
Assert,
};
// Various flags for the servo traversal.
enum class ServoTraversalFlags : uint32_t {
Empty = 0,
// Perform animation processing but not regular styling.
AnimationOnly = 1 << 0,
// Traverses as normal mode but tries to update all CSS animations.
ForCSSRuleChanges = 1 << 1,
// The final animation-only traversal, which shouldn't really care about other
// style changes anymore.
FinalAnimationTraversal = 1 << 2,
// Allows the traversal to run in parallel if there are sufficient cores on
// the machine.
ParallelTraversal = 1 << 7,
// Flush throttled animations. By default, we only update throttled animations
// when we have other non-throttled work to do. With this flag, we
// unconditionally tick and process them.
FlushThrottledAnimations = 1 << 8,
};
MOZ_MAKE_ENUM_CLASS_BITWISE_OPERATORS(ServoTraversalFlags)
// Indicates which rules should be included when performing selecting matching
// on an element. DefaultOnly is used to exclude all rules except for those
// that come from UA style sheets, and is used to implemented
// getDefaultComputedStyle.
enum class StyleRuleInclusion {
All,
DefaultOnly,
};
// Represents which tasks are performed in a SequentialTask of UpdateAnimations.
enum class UpdateAnimationsTasks : uint8_t {
CSSAnimations = 1 << 0,
CSSTransitions = 1 << 1,
EffectProperties = 1 << 2,
CascadeResults = 1 << 3,
DisplayChangedFromNone = 1 << 4,
ScrollTimelines = 1 << 5,
ViewTimelines = 1 << 6,
};
MOZ_MAKE_ENUM_CLASS_BITWISE_OPERATORS(UpdateAnimationsTasks)
// The mode to use when parsing values.
enum class ParsingMode : uint8_t {
// In CSS, lengths must have units, except for zero values, where the unit can
// be omitted.
// https://www.w3.org/TR/css3-values/#lengths
Default = 0,
// In SVG, a coordinate or length value without a unit identifier (e.g., "25")
// is assumed to be in user units (px).
// https://www.w3.org/TR/SVG/coords.html#Units
AllowUnitlessLength = 1 << 0,
// In SVG, out-of-range values are not treated as an error in parsing.
// https://www.w3.org/TR/SVG/implnote.html#RangeClamping
AllowAllNumericValues = 1 << 1,
};
MOZ_MAKE_ENUM_CLASS_BITWISE_OPERATORS(ParsingMode)
// The kind of style we're generating when requesting Servo to give us an
// inherited style.
enum class InheritTarget {
// We're requesting a text style.
Text,
// We're requesting a first-letter continuation frame style.
FirstLetterContinuation,
// We're requesting a style for a placeholder frame.
PlaceholderFrame,
};
// Represents values for interaction media features.
// https://drafts.csswg.org/mediaqueries-4/#mf-interaction
enum class PointerCapabilities : uint8_t {
None = 0,
Coarse = 1 << 0,
Fine = 1 << 1,
Hover = 1 << 2,
};
MOZ_MAKE_ENUM_CLASS_BITWISE_OPERATORS(PointerCapabilities)
// These measurements are obtained for both the UA cache and the Stylist, but
// not all the fields are used in both cases.
class ServoStyleSetSizes {
public:
size_t mRuleTree; // Stylist-only
size_t mPrecomputedPseudos; // UA cache-only
size_t mElementAndPseudosMaps; // Used for both
size_t mInvalidationMap; // Used for both
size_t mRevalidationSelectors; // Used for both
size_t mOther; // Used for both
ServoStyleSetSizes()
: mRuleTree(0),
mPrecomputedPseudos(0),
mElementAndPseudosMaps(0),
mInvalidationMap(0),
mRevalidationSelectors(0),
mOther(0) {}
};
// A callback that can be sent via FFI which will be invoked _right before_
// being mutated, and at most once.
struct DeclarationBlockMutationClosure {
// The callback function. The first argument is `data`, the second is the
// property id that changed.
void (*function)(void*, nsCSSPropertyID) = nullptr;
void* data = nullptr;
};
struct MediumFeaturesChangedResult {
bool mAffectsDocumentRules;
bool mAffectsNonDocumentRules;
};
} // namespace mozilla
#endif // mozilla_ServoTypes_h
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