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gecko-dev/layout/style/GeckoBindings.cpp

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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/. */
/* FFI functions for Servo to call into Gecko */
#include "mozilla/GeckoBindings.h"
#include "ChildIterator.h"
#include "ErrorReporter.h"
#include "GeckoProfiler.h"
#include "gfxFontFamilyList.h"
#include "gfxFontFeatures.h"
#include "nsAnimationManager.h"
#include "nsAttrValueInlines.h"
#include "nsCSSFrameConstructor.h"
#include "nsCSSProps.h"
#include "nsCSSPseudoElements.h"
#include "nsContentUtils.h"
#include "nsDOMTokenList.h"
#include "nsDeviceContext.h"
#include "nsIContentInlines.h"
#include "nsICrashReporter.h"
#include "nsIDocumentInlines.h"
#include "nsILoadContext.h"
#include "nsIFrame.h"
#include "nsIMemoryReporter.h"
#include "nsIMozBrowserFrame.h"
#include "nsINode.h"
#include "nsIPresShell.h"
#include "nsIPresShellInlines.h"
#include "nsIPrincipal.h"
#include "nsIURI.h"
#include "nsFontMetrics.h"
#include "nsHTMLStyleSheet.h"
#include "nsMappedAttributes.h"
#include "nsMediaFeatures.h"
#include "nsNameSpaceManager.h"
#include "nsNetUtil.h"
#include "nsProxyRelease.h"
#include "nsString.h"
#include "nsStyleStruct.h"
#include "nsStyleUtil.h"
#include "nsSVGElement.h"
#include "nsTArray.h"
#include "nsTransitionManager.h"
#include "nsWindowSizes.h"
#include "mozilla/CORSMode.h"
#include "mozilla/DeclarationBlock.h"
#include "mozilla/EffectCompositor.h"
#include "mozilla/EffectSet.h"
#include "mozilla/EventStates.h"
#include "mozilla/FontPropertyTypes.h"
#include "mozilla/Keyframe.h"
#include "mozilla/Mutex.h"
#include "mozilla/Preferences.h"
#include "mozilla/ServoElementSnapshot.h"
#include "mozilla/StaticPrefs.h"
#include "mozilla/RestyleManager.h"
#include "mozilla/SizeOfState.h"
#include "mozilla/StyleAnimationValue.h"
#include "mozilla/SystemGroup.h"
#include "mozilla/ServoBindings.h"
#include "mozilla/ServoTraversalStatistics.h"
#include "mozilla/Telemetry.h"
#include "mozilla/RWLock.h"
#include "mozilla/dom/Element.h"
#include "mozilla/dom/ElementInlines.h"
#include "mozilla/dom/HTMLTableCellElement.h"
#include "mozilla/dom/HTMLBodyElement.h"
#include "mozilla/dom/HTMLSlotElement.h"
#include "mozilla/dom/MediaList.h"
#include "mozilla/LookAndFeel.h"
#include "mozilla/URLExtraData.h"
#include "mozilla/dom/CSSMozDocumentRule.h"
#if defined(MOZ_MEMORY)
#include "mozmemory.h"
#endif
using namespace mozilla;
using namespace mozilla::css;
using namespace mozilla::dom;
#define SERVO_ARC_TYPE(name_, type_) \
already_AddRefed<type_> type_##Strong::Consume() { \
RefPtr<type_> result; \
result.swap(mPtr); \
return result.forget(); \
}
#include "mozilla/ServoArcTypeList.h"
SERVO_ARC_TYPE(ComputedStyle, ComputedStyle)
#undef SERVO_ARC_TYPE
// Definitions of the global traversal stats.
bool ServoTraversalStatistics::sActive = false;
ServoTraversalStatistics ServoTraversalStatistics::sSingleton;
static RWLock* sServoFFILock = nullptr;
static const nsFont* ThreadSafeGetDefaultFontHelper(
const nsPresContext* aPresContext, nsAtom* aLanguage, uint8_t aGenericId) {
bool needsCache = false;
const nsFont* retval;
{
AutoReadLock guard(*sServoFFILock);
retval = aPresContext->GetDefaultFont(aGenericId, aLanguage, &needsCache);
}
if (!needsCache) {
return retval;
}
{
AutoWriteLock guard(*sServoFFILock);
retval = aPresContext->GetDefaultFont(aGenericId, aLanguage, nullptr);
}
return retval;
}
/*
* Does this child count as significant for selector matching?
*
* See nsStyleUtil::IsSignificantChild for details.
*/
bool Gecko_IsSignificantChild(RawGeckoNodeBorrowed aNode,
bool aWhitespaceIsSignificant) {
return nsStyleUtil::ThreadSafeIsSignificantChild(aNode->AsContent(),
aWhitespaceIsSignificant);
}
RawGeckoNodeBorrowedOrNull Gecko_GetLastChild(RawGeckoNodeBorrowed aNode) {
return aNode->GetLastChild();
}
RawGeckoNodeBorrowedOrNull Gecko_GetPreviousSibling(
RawGeckoNodeBorrowed aNode) {
return aNode->GetPreviousSibling();
}
RawGeckoNodeBorrowedOrNull Gecko_GetFlattenedTreeParentNode(
RawGeckoNodeBorrowed aNode) {
return aNode->GetFlattenedTreeParentNodeForStyle();
}
RawGeckoElementBorrowedOrNull Gecko_GetBeforeOrAfterPseudo(
RawGeckoElementBorrowed aElement, bool aIsBefore) {
MOZ_ASSERT(aElement);
MOZ_ASSERT(aElement->HasProperties());
return aIsBefore ? nsLayoutUtils::GetBeforePseudo(aElement)
: nsLayoutUtils::GetAfterPseudo(aElement);
}
nsTArray<nsIContent*>* Gecko_GetAnonymousContentForElement(
RawGeckoElementBorrowed aElement) {
nsIAnonymousContentCreator* ac = do_QueryFrame(aElement->GetPrimaryFrame());
if (!ac) {
return nullptr;
}
auto* array = new nsTArray<nsIContent*>();
nsContentUtils::AppendNativeAnonymousChildren(aElement, *array, 0);
return array;
}
void Gecko_DestroyAnonymousContentList(nsTArray<nsIContent*>* aAnonContent) {
MOZ_ASSERT(aAnonContent);
delete aAnonContent;
}
const nsTArray<RefPtr<nsINode>>* Gecko_GetAssignedNodes(
RawGeckoElementBorrowed aElement) {
MOZ_ASSERT(HTMLSlotElement::FromNode(aElement));
return &static_cast<const HTMLSlotElement*>(aElement)->AssignedNodes();
}
void Gecko_ComputedStyle_Init(mozilla::ComputedStyle* aStyle,
RawGeckoPresContextBorrowed aPresContext,
const ServoComputedData* aValues,
mozilla::CSSPseudoElementType aPseudoType,
nsAtom* aPseudoTag) {
auto* presContext = const_cast<nsPresContext*>(aPresContext);
new (KnownNotNull, aStyle)
mozilla::ComputedStyle(presContext, aPseudoTag, aPseudoType,
ServoComputedDataForgotten(aValues));
}
ServoComputedData::ServoComputedData(const ServoComputedDataForgotten aValue) {
PodAssign(this, aValue.mPtr);
}
MOZ_DEFINE_MALLOC_ENCLOSING_SIZE_OF(ServoStyleStructsMallocEnclosingSizeOf)
void ServoComputedData::AddSizeOfExcludingThis(nsWindowSizes& aSizes) const {
// Note: GetStyleFoo() returns a pointer to an nsStyleFoo that sits within a
// servo_arc::Arc, i.e. it is preceded by a word-sized refcount. So we need
// to measure it with a function that can handle an interior pointer. We use
// ServoStyleStructsEnclosingMallocSizeOf to clearly identify in DMD's
// output the memory measured here.
#define STYLE_STRUCT(name_) \
static_assert(alignof(nsStyle##name_) <= sizeof(size_t), \
"alignment will break AddSizeOfExcludingThis()"); \
const void* p##name_ = GetStyle##name_(); \
if (!aSizes.mState.HaveSeenPtr(p##name_)) { \
aSizes.mStyleSizes.NS_STYLE_SIZES_FIELD(name_) += \
ServoStyleStructsMallocEnclosingSizeOf(p##name_); \
}
#include "nsStyleStructList.h"
#undef STYLE_STRUCT
if (visited_style.mPtr && !aSizes.mState.HaveSeenPtr(visited_style.mPtr)) {
visited_style.mPtr->AddSizeOfIncludingThis(
aSizes, &aSizes.mLayoutComputedValuesVisited);
}
// Measurement of the following members may be added later if DMD finds it is
// worthwhile:
// - custom_properties
// - writing_mode
// - rules
// - font_computation_data
}
void Gecko_ComputedStyle_Destroy(mozilla::ComputedStyle* aStyle) {
aStyle->~ComputedStyle();
}
void Gecko_ConstructStyleChildrenIterator(
RawGeckoElementBorrowed aElement,
RawGeckoStyleChildrenIteratorBorrowedMut aIterator) {
MOZ_ASSERT(aElement);
MOZ_ASSERT(aIterator);
new (aIterator) StyleChildrenIterator(aElement);
}
void Gecko_DestroyStyleChildrenIterator(
RawGeckoStyleChildrenIteratorBorrowedMut aIterator) {
MOZ_ASSERT(aIterator);
aIterator->~StyleChildrenIterator();
}
RawGeckoNodeBorrowed Gecko_GetNextStyleChild(
RawGeckoStyleChildrenIteratorBorrowedMut aIterator) {
MOZ_ASSERT(aIterator);
return aIterator->GetNextChild();
}
bool Gecko_VisitedStylesEnabled(const nsIDocument* aDoc) {
MOZ_ASSERT(aDoc);
MOZ_ASSERT(NS_IsMainThread());
if (!StaticPrefs::layout_css_visited_links_enabled()) {
return false;
}
if (aDoc->IsBeingUsedAsImage()) {
return false;
}
nsILoadContext* loadContext = aDoc->GetLoadContext();
if (loadContext && loadContext->UsePrivateBrowsing()) {
return false;
}
return true;
}
EventStates::ServoType Gecko_ElementState(RawGeckoElementBorrowed aElement) {
return aElement->StyleState().ServoValue();
}
bool Gecko_IsRootElement(RawGeckoElementBorrowed aElement) {
return aElement->OwnerDoc()->GetRootElement() == aElement;
}
// Dirtiness tracking.
void Gecko_SetNodeFlags(RawGeckoNodeBorrowed aNode, uint32_t aFlags) {
const_cast<nsINode*>(aNode)->SetFlags(aFlags);
}
void Gecko_UnsetNodeFlags(RawGeckoNodeBorrowed aNode, uint32_t aFlags) {
const_cast<nsINode*>(aNode)->UnsetFlags(aFlags);
}
void Gecko_NoteDirtyElement(RawGeckoElementBorrowed aElement) {
MOZ_ASSERT(NS_IsMainThread());
const_cast<Element*>(aElement)->NoteDirtyForServo();
}
void Gecko_NoteDirtySubtreeForInvalidation(RawGeckoElementBorrowed aElement) {
MOZ_ASSERT(NS_IsMainThread());
const_cast<Element*>(aElement)->NoteDirtySubtreeForServo();
}
void Gecko_NoteAnimationOnlyDirtyElement(RawGeckoElementBorrowed aElement) {
MOZ_ASSERT(NS_IsMainThread());
const_cast<Element*>(aElement)->NoteAnimationOnlyDirtyForServo();
}
bool Gecko_AnimationNameMayBeReferencedFromStyle(
RawGeckoPresContextBorrowed aPresContext, nsAtom* aName) {
MOZ_ASSERT(aPresContext);
return aPresContext->AnimationManager()->AnimationMayBeReferenced(aName);
}
CSSPseudoElementType Gecko_GetImplementedPseudo(
RawGeckoElementBorrowed aElement) {
return aElement->GetPseudoElementType();
}
uint32_t Gecko_CalcStyleDifference(ComputedStyleBorrowed aOldStyle,
ComputedStyleBorrowed aNewStyle,
bool* aAnyStyleStructChanged,
bool* aOnlyResetStructsChanged) {
MOZ_ASSERT(aOldStyle);
MOZ_ASSERT(aNewStyle);
uint32_t equalStructs;
nsChangeHint result =
const_cast<ComputedStyle*>(aOldStyle)->CalcStyleDifference(
const_cast<ComputedStyle*>(aNewStyle), &equalStructs);
*aAnyStyleStructChanged =
equalStructs != StyleStructConstants::kAllStructsMask;
const auto kInheritedStructsMask =
StyleStructConstants::kInheritedStructsMask;
*aOnlyResetStructsChanged =
(equalStructs & kInheritedStructsMask) == kInheritedStructsMask;
return result;
}
const ServoElementSnapshot* Gecko_GetElementSnapshot(
const ServoElementSnapshotTable* aTable, const Element* aElement) {
MOZ_ASSERT(aTable);
MOZ_ASSERT(aElement);
return aTable->Get(const_cast<Element*>(aElement));
}
bool Gecko_HaveSeenPtr(SeenPtrs* aTable, const void* aPtr) {
MOZ_ASSERT(NS_IsMainThread());
MOZ_ASSERT(aTable);
// Empty Rust allocations are indicated by small values up to the alignment
// of the relevant type. We shouldn't see anything like that here.
MOZ_ASSERT(uintptr_t(aPtr) > 16);
return aTable->HaveSeenPtr(aPtr);
}
RawServoDeclarationBlockStrongBorrowedOrNull Gecko_GetStyleAttrDeclarationBlock(
RawGeckoElementBorrowed aElement) {
DeclarationBlock* decl = aElement->GetInlineStyleDeclaration();
if (!decl) {
return nullptr;
}
return decl->RefRawStrong();
}
void Gecko_UnsetDirtyStyleAttr(RawGeckoElementBorrowed aElement) {
DeclarationBlock* decl = aElement->GetInlineStyleDeclaration();
if (!decl) {
return;
}
decl->UnsetDirty();
}
static const RawServoDeclarationBlockStrong* AsRefRawStrong(
const RefPtr<RawServoDeclarationBlock>& aDecl) {
static_assert(sizeof(RefPtr<RawServoDeclarationBlock>) ==
sizeof(RawServoDeclarationBlockStrong),
"RefPtr should just be a pointer");
return reinterpret_cast<const RawServoDeclarationBlockStrong*>(&aDecl);
}
RawServoDeclarationBlockStrongBorrowedOrNull
Gecko_GetHTMLPresentationAttrDeclarationBlock(
RawGeckoElementBorrowed aElement) {
const nsMappedAttributes* attrs = aElement->GetMappedAttributes();
if (!attrs) {
auto* svg = nsSVGElement::FromNodeOrNull(aElement);
if (svg) {
if (auto decl = svg->GetContentDeclarationBlock()) {
return decl->RefRawStrong();
}
}
return nullptr;
}
return AsRefRawStrong(attrs->GetServoStyle());
}
RawServoDeclarationBlockStrongBorrowedOrNull
Gecko_GetExtraContentStyleDeclarations(RawGeckoElementBorrowed aElement) {
if (!aElement->IsAnyOfHTMLElements(nsGkAtoms::td, nsGkAtoms::th)) {
return nullptr;
}
const HTMLTableCellElement* cell =
static_cast<const HTMLTableCellElement*>(aElement);
if (nsMappedAttributes* attrs =
cell->GetMappedAttributesInheritedFromTable()) {
return AsRefRawStrong(attrs->GetServoStyle());
}
return nullptr;
}
RawServoDeclarationBlockStrongBorrowedOrNull
Gecko_GetUnvisitedLinkAttrDeclarationBlock(RawGeckoElementBorrowed aElement) {
nsHTMLStyleSheet* sheet = aElement->OwnerDoc()->GetAttributeStyleSheet();
if (!sheet) {
return nullptr;
}
return AsRefRawStrong(sheet->GetServoUnvisitedLinkDecl());
}
StyleSheet* Gecko_StyleSheet_Clone(const StyleSheet* aSheet,
const StyleSheet* aNewParentSheet) {
MOZ_ASSERT(aSheet);
MOZ_ASSERT(aSheet->GetParentSheet(), "Should only be used for @import");
MOZ_ASSERT(aNewParentSheet, "Wat");
RefPtr<StyleSheet> newSheet =
aSheet->Clone(nullptr, nullptr, nullptr, nullptr);
// NOTE(emilio): This code runs in the StylesheetInner constructor, which
// means that the inner pointer of `aNewParentSheet` still points to the old
// one.
//
// So we _don't_ update neither the parent pointer of the stylesheet, nor the
// child list (yet). This is fixed up in that same constructor.
return static_cast<StyleSheet*>(newSheet.forget().take());
}
void Gecko_StyleSheet_AddRef(const StyleSheet* aSheet) {
MOZ_ASSERT(NS_IsMainThread());
const_cast<StyleSheet*>(aSheet)->AddRef();
}
void Gecko_StyleSheet_Release(const StyleSheet* aSheet) {
MOZ_ASSERT(NS_IsMainThread());
const_cast<StyleSheet*>(aSheet)->Release();
}
RawServoDeclarationBlockStrongBorrowedOrNull
Gecko_GetVisitedLinkAttrDeclarationBlock(RawGeckoElementBorrowed aElement) {
nsHTMLStyleSheet* sheet = aElement->OwnerDoc()->GetAttributeStyleSheet();
if (!sheet) {
return nullptr;
}
return AsRefRawStrong(sheet->GetServoVisitedLinkDecl());
}
RawServoDeclarationBlockStrongBorrowedOrNull
Gecko_GetActiveLinkAttrDeclarationBlock(RawGeckoElementBorrowed aElement) {
nsHTMLStyleSheet* sheet = aElement->OwnerDoc()->GetAttributeStyleSheet();
if (!sheet) {
return nullptr;
}
return AsRefRawStrong(sheet->GetServoActiveLinkDecl());
}
static CSSPseudoElementType GetPseudoTypeFromElementForAnimation(
const Element*& aElementOrPseudo) {
if (aElementOrPseudo->IsGeneratedContentContainerForBefore()) {
aElementOrPseudo = aElementOrPseudo->GetParent()->AsElement();
return CSSPseudoElementType::before;
}
if (aElementOrPseudo->IsGeneratedContentContainerForAfter()) {
aElementOrPseudo = aElementOrPseudo->GetParent()->AsElement();
return CSSPseudoElementType::after;
}
return CSSPseudoElementType::NotPseudo;
}
bool Gecko_GetAnimationRule(
RawGeckoElementBorrowed aElement,
EffectCompositor::CascadeLevel aCascadeLevel,
RawServoAnimationValueMapBorrowedMut aAnimationValues) {
MOZ_ASSERT(aElement);
nsIDocument* doc = aElement->GetComposedDoc();
if (!doc) {
return false;
}
nsPresContext* presContext = doc->GetPresContext();
if (!presContext || !presContext->IsDynamic()) {
// For print or print preview, ignore animations.
return false;
}
CSSPseudoElementType pseudoType =
GetPseudoTypeFromElementForAnimation(aElement);
return presContext->EffectCompositor()->GetServoAnimationRule(
aElement, pseudoType, aCascadeLevel, aAnimationValues);
}
bool Gecko_StyleAnimationsEquals(RawGeckoStyleAnimationListBorrowed aA,
RawGeckoStyleAnimationListBorrowed aB) {
return *aA == *aB;
}
void Gecko_CopyAnimationNames(RawGeckoStyleAnimationListBorrowedMut aDest,
RawGeckoStyleAnimationListBorrowed aSrc) {
size_t srcLength = aSrc->Length();
aDest->EnsureLengthAtLeast(srcLength);
for (size_t index = 0; index < srcLength; index++) {
(*aDest)[index].SetName((*aSrc)[index].GetName());
}
}
void Gecko_SetAnimationName(StyleAnimation* aStyleAnimation, nsAtom* aAtom) {
MOZ_ASSERT(aStyleAnimation);
aStyleAnimation->SetName(already_AddRefed<nsAtom>(aAtom));
}
void Gecko_UpdateAnimations(RawGeckoElementBorrowed aElement,
ComputedStyleBorrowedOrNull aOldComputedData,
ComputedStyleBorrowedOrNull aComputedData,
UpdateAnimationsTasks aTasks) {
MOZ_ASSERT(NS_IsMainThread());
MOZ_ASSERT(aElement);
if (!aElement->IsInComposedDoc()) {
return;
}
nsPresContext* presContext = nsContentUtils::GetContextForContent(aElement);
if (!presContext || !presContext->IsDynamic()) {
return;
}
nsAutoAnimationMutationBatch mb(aElement->OwnerDoc());
CSSPseudoElementType pseudoType =
GetPseudoTypeFromElementForAnimation(aElement);
if (aTasks & UpdateAnimationsTasks::CSSAnimations) {
presContext->AnimationManager()->UpdateAnimations(
const_cast<dom::Element*>(aElement), pseudoType, aComputedData);
}
// aComputedData might be nullptr if the target element is now in a
// display:none subtree. We still call Gecko_UpdateAnimations in this case
// because we need to stop CSS animations in the display:none subtree.
// However, we don't need to update transitions since they are stopped by
// RestyleManager::AnimationsWithDestroyedFrame so we just return early
// here.
if (!aComputedData) {
return;
}
if (aTasks & UpdateAnimationsTasks::CSSTransitions) {
MOZ_ASSERT(aOldComputedData);
presContext->TransitionManager()->UpdateTransitions(
const_cast<dom::Element*>(aElement), pseudoType, *aOldComputedData,
*aComputedData);
}
if (aTasks & UpdateAnimationsTasks::EffectProperties) {
presContext->EffectCompositor()->UpdateEffectProperties(
aComputedData, const_cast<dom::Element*>(aElement), pseudoType);
}
if (aTasks & UpdateAnimationsTasks::CascadeResults) {
EffectSet* effectSet = EffectSet::GetEffectSet(aElement, pseudoType);
// CSS animations/transitions might have been destroyed as part of the above
// steps so before updating cascade results, we check if there are still any
// animations to update.
if (effectSet) {
// We call UpdateCascadeResults directly (intead of
// MaybeUpdateCascadeResults) since we know for sure that the cascade has
// changed, but we were unable to call MarkCascadeUpdated when we noticed
// it since we avoid mutating state as part of the Servo parallel
// traversal.
presContext->EffectCompositor()->UpdateCascadeResults(
*effectSet, const_cast<Element*>(aElement), pseudoType);
}
}
if (aTasks & UpdateAnimationsTasks::DisplayChangedFromNone) {
presContext->EffectCompositor()->RequestRestyle(
const_cast<Element*>(aElement), pseudoType,
EffectCompositor::RestyleType::Standard,
EffectCompositor::CascadeLevel::Animations);
}
}
size_t Gecko_GetAnimationEffectCount(RawGeckoElementBorrowed aElementOrPseudo) {
CSSPseudoElementType pseudoType =
GetPseudoTypeFromElementForAnimation(aElementOrPseudo);
EffectSet* effectSet = EffectSet::GetEffectSet(aElementOrPseudo, pseudoType);
return effectSet ? effectSet->Count() : 0;
}
bool Gecko_ElementHasAnimations(RawGeckoElementBorrowed aElement) {
CSSPseudoElementType pseudoType =
GetPseudoTypeFromElementForAnimation(aElement);
return !!EffectSet::GetEffectSet(aElement, pseudoType);
}
bool Gecko_ElementHasCSSAnimations(RawGeckoElementBorrowed aElement) {
CSSPseudoElementType pseudoType =
GetPseudoTypeFromElementForAnimation(aElement);
nsAnimationManager::CSSAnimationCollection* collection =
nsAnimationManager::CSSAnimationCollection ::GetAnimationCollection(
aElement, pseudoType);
return collection && !collection->mAnimations.IsEmpty();
}
bool Gecko_ElementHasCSSTransitions(RawGeckoElementBorrowed aElement) {
CSSPseudoElementType pseudoType =
GetPseudoTypeFromElementForAnimation(aElement);
nsTransitionManager::CSSTransitionCollection* collection =
nsTransitionManager::CSSTransitionCollection ::GetAnimationCollection(
aElement, pseudoType);
return collection && !collection->mAnimations.IsEmpty();
}
size_t Gecko_ElementTransitions_Length(RawGeckoElementBorrowed aElement) {
CSSPseudoElementType pseudoType =
GetPseudoTypeFromElementForAnimation(aElement);
nsTransitionManager::CSSTransitionCollection* collection =
nsTransitionManager::CSSTransitionCollection ::GetAnimationCollection(
aElement, pseudoType);
return collection ? collection->mAnimations.Length() : 0;
}
static CSSTransition* GetCurrentTransitionAt(RawGeckoElementBorrowed aElement,
size_t aIndex) {
CSSPseudoElementType pseudoType =
GetPseudoTypeFromElementForAnimation(aElement);
nsTransitionManager::CSSTransitionCollection* collection =
nsTransitionManager::CSSTransitionCollection ::GetAnimationCollection(
aElement, pseudoType);
if (!collection) {
return nullptr;
}
nsTArray<RefPtr<CSSTransition>>& transitions = collection->mAnimations;
return aIndex < transitions.Length() ? transitions[aIndex].get() : nullptr;
}
nsCSSPropertyID Gecko_ElementTransitions_PropertyAt(
RawGeckoElementBorrowed aElement, size_t aIndex) {
CSSTransition* transition = GetCurrentTransitionAt(aElement, aIndex);
return transition ? transition->TransitionProperty()
: nsCSSPropertyID::eCSSProperty_UNKNOWN;
}
RawServoAnimationValueBorrowedOrNull Gecko_ElementTransitions_EndValueAt(
RawGeckoElementBorrowed aElement, size_t aIndex) {
CSSTransition* transition = GetCurrentTransitionAt(aElement, aIndex);
return transition ? transition->ToValue().mServo.get() : nullptr;
}
double Gecko_GetProgressFromComputedTiming(
RawGeckoComputedTimingBorrowed aComputedTiming) {
return aComputedTiming->mProgress.Value();
}
double Gecko_GetPositionInSegment(
RawGeckoAnimationPropertySegmentBorrowed aSegment, double aProgress,
ComputedTimingFunction::BeforeFlag aBeforeFlag) {
MOZ_ASSERT(aSegment->mFromKey < aSegment->mToKey,
"The segment from key should be less than to key");
double positionInSegment = (aProgress - aSegment->mFromKey) /
// To avoid floating precision inaccuracies, make
// sure we calculate both the numerator and
// denominator using double precision.
(double(aSegment->mToKey) - aSegment->mFromKey);
return ComputedTimingFunction::GetPortion(aSegment->mTimingFunction,
positionInSegment, aBeforeFlag);
}
RawServoAnimationValueBorrowedOrNull Gecko_AnimationGetBaseStyle(
void* aBaseStyles, nsCSSPropertyID aProperty) {
auto base =
static_cast<nsRefPtrHashtable<nsUint32HashKey, RawServoAnimationValue>*>(
aBaseStyles);
return base->GetWeak(aProperty);
}
void Gecko_FillAllImageLayers(nsStyleImageLayers* aLayers, uint32_t aMaxLen) {
aLayers->FillAllLayers(aMaxLen);
}
bool Gecko_IsDocumentBody(RawGeckoElementBorrowed aElement) {
nsIDocument* doc = aElement->GetUncomposedDoc();
return doc && doc->GetBodyElement() == aElement;
}
nscolor Gecko_GetLookAndFeelSystemColor(
int32_t aId, RawGeckoPresContextBorrowed aPresContext) {
bool useStandinsForNativeColors = aPresContext && !aPresContext->IsChrome();
nscolor result;
LookAndFeel::ColorID colorId = static_cast<LookAndFeel::ColorID>(aId);
AutoWriteLock guard(*sServoFFILock);
LookAndFeel::GetColor(colorId, useStandinsForNativeColors, &result);
return result;
}
bool Gecko_MatchLang(RawGeckoElementBorrowed aElement, nsAtom* aOverrideLang,
bool aHasOverrideLang, const char16_t* aValue) {
MOZ_ASSERT(!(aOverrideLang && !aHasOverrideLang),
"aHasOverrideLang should only be set when aOverrideLang is null");
MOZ_ASSERT(aValue, "null lang parameter");
if (!aValue || !*aValue) {
return false;
}
// We have to determine the language of the current element. Since
// this is currently no property and since the language is inherited
// from the parent we have to be prepared to look at all parent
// nodes. The language itself is encoded in the LANG attribute.
if (auto* language = aHasOverrideLang ? aOverrideLang : aElement->GetLang()) {
return nsStyleUtil::DashMatchCompare(
nsDependentAtomString(language), nsDependentString(aValue),
nsASCIICaseInsensitiveStringComparator());
}
// Try to get the language from the HTTP header or if this
// is missing as well from the preferences.
// The content language can be a comma-separated list of
// language codes.
nsAutoString language;
aElement->OwnerDoc()->GetContentLanguage(language);
nsDependentString langString(aValue);
language.StripWhitespace();
for (auto const& lang : language.Split(char16_t(','))) {
if (nsStyleUtil::DashMatchCompare(
lang, langString, nsASCIICaseInsensitiveStringComparator())) {
return true;
}
}
return false;
}
nsAtom* Gecko_GetXMLLangValue(RawGeckoElementBorrowed aElement) {
const nsAttrValue* attr =
aElement->GetParsedAttr(nsGkAtoms::lang, kNameSpaceID_XML);
if (!attr) {
return nullptr;
}
MOZ_ASSERT(attr->Type() == nsAttrValue::eAtom);
RefPtr<nsAtom> atom = attr->GetAtomValue();
return atom.forget().take();
}
nsIDocument::DocumentTheme Gecko_GetDocumentLWTheme(
const nsIDocument* aDocument) {
return aDocument->ThreadSafeGetDocumentLWTheme();
}
bool Gecko_IsTableBorderNonzero(RawGeckoElementBorrowed aElement) {
if (!aElement->IsHTMLElement(nsGkAtoms::table)) {
return false;
}
const nsAttrValue* val = aElement->GetParsedAttr(nsGkAtoms::border);
return val &&
(val->Type() != nsAttrValue::eInteger || val->GetIntegerValue() != 0);
}
bool Gecko_IsBrowserFrame(RawGeckoElementBorrowed aElement) {
nsIMozBrowserFrame* browserFrame =
const_cast<Element*>(aElement)->GetAsMozBrowserFrame();
return browserFrame && browserFrame->GetReallyIsBrowser();
}
template <typename Implementor>
static nsAtom* LangValue(Implementor* aElement) {
// TODO(emilio): Deduplicate a bit with nsIContent::GetLang().
const nsAttrValue* attr =
aElement->GetParsedAttr(nsGkAtoms::lang, kNameSpaceID_XML);
if (!attr && aElement->SupportsLangAttr()) {
attr = aElement->GetParsedAttr(nsGkAtoms::lang);
}
if (!attr) {
return nullptr;
}
MOZ_ASSERT(attr->Type() == nsAttrValue::eAtom);
RefPtr<nsAtom> atom = attr->GetAtomValue();
return atom.forget().take();
}
template <typename Implementor, typename MatchFn>
static bool DoMatch(Implementor* aElement, nsAtom* aNS, nsAtom* aName,
MatchFn aMatch) {
if (MOZ_LIKELY(aNS)) {
int32_t ns = aNS == nsGkAtoms::_empty
? kNameSpaceID_None
: nsContentUtils::NameSpaceManager()->GetNameSpaceID(
aNS, aElement->IsInChromeDocument());
MOZ_ASSERT(ns == nsContentUtils::NameSpaceManager()->GetNameSpaceID(
aNS, aElement->IsInChromeDocument()));
NS_ENSURE_TRUE(ns != kNameSpaceID_Unknown, false);
const nsAttrValue* value = aElement->GetParsedAttr(aName, ns);
return value && aMatch(value);
}
// No namespace means any namespace - we have to check them all. :-(
BorrowedAttrInfo attrInfo;
for (uint32_t i = 0; (attrInfo = aElement->GetAttrInfoAt(i)); ++i) {
if (attrInfo.mName->LocalName() != aName) {
continue;
}
if (aMatch(attrInfo.mValue)) {
return true;
}
}
return false;
}
template <typename Implementor>
static bool HasAttr(Implementor* aElement, nsAtom* aNS, nsAtom* aName) {
auto match = [](const nsAttrValue* aValue) { return true; };
return DoMatch(aElement, aNS, aName, match);
}
template <typename Implementor>
static bool AttrEquals(Implementor* aElement, nsAtom* aNS, nsAtom* aName,
nsAtom* aStr, bool aIgnoreCase) {
auto match = [aStr, aIgnoreCase](const nsAttrValue* aValue) {
return aValue->Equals(aStr, aIgnoreCase ? eIgnoreCase : eCaseMatters);
};
return DoMatch(aElement, aNS, aName, match);
}
#define WITH_COMPARATOR(ignore_case_, c_, expr_) \
if (ignore_case_) { \
const nsCaseInsensitiveStringComparator c_; \
return expr_; \
} else { \
const nsDefaultStringComparator c_; \
return expr_; \
}
template <typename Implementor>
static bool AttrDashEquals(Implementor* aElement, nsAtom* aNS, nsAtom* aName,
nsAtom* aStr, bool aIgnoreCase) {
auto match = [aStr, aIgnoreCase](const nsAttrValue* aValue) {
nsAutoString str;
aValue->ToString(str);
WITH_COMPARATOR(
aIgnoreCase, c,
nsStyleUtil::DashMatchCompare(str, nsDependentAtomString(aStr), c))
};
return DoMatch(aElement, aNS, aName, match);
}
template <typename Implementor>
static bool AttrIncludes(Implementor* aElement, nsAtom* aNS, nsAtom* aName,
nsAtom* aStr, bool aIgnoreCase) {
auto match = [aStr, aIgnoreCase](const nsAttrValue* aValue) {
nsAutoString str;
aValue->ToString(str);
WITH_COMPARATOR(
aIgnoreCase, c,
nsStyleUtil::ValueIncludes(str, nsDependentAtomString(aStr), c))
};
return DoMatch(aElement, aNS, aName, match);
}
template <typename Implementor>
static bool AttrHasSubstring(Implementor* aElement, nsAtom* aNS, nsAtom* aName,
nsAtom* aStr, bool aIgnoreCase) {
auto match = [aStr, aIgnoreCase](const nsAttrValue* aValue) {
nsAutoString str;
aValue->ToString(str);
WITH_COMPARATOR(aIgnoreCase, c,
FindInReadable(nsDependentAtomString(aStr), str, c))
};
return DoMatch(aElement, aNS, aName, match);
}
template <typename Implementor>
static bool AttrHasPrefix(Implementor* aElement, nsAtom* aNS, nsAtom* aName,
nsAtom* aStr, bool aIgnoreCase) {
auto match = [aStr, aIgnoreCase](const nsAttrValue* aValue) {
nsAutoString str;
aValue->ToString(str);
WITH_COMPARATOR(aIgnoreCase, c,
StringBeginsWith(str, nsDependentAtomString(aStr), c))
};
return DoMatch(aElement, aNS, aName, match);
}
template <typename Implementor>
static bool AttrHasSuffix(Implementor* aElement, nsAtom* aNS, nsAtom* aName,
nsAtom* aStr, bool aIgnoreCase) {
auto match = [aStr, aIgnoreCase](const nsAttrValue* aValue) {
nsAutoString str;
aValue->ToString(str);
WITH_COMPARATOR(aIgnoreCase, c,
StringEndsWith(str, nsDependentAtomString(aStr), c))
};
return DoMatch(aElement, aNS, aName, match);
}
#define SERVO_IMPL_ELEMENT_ATTR_MATCHING_FUNCTIONS(prefix_, implementor_) \
nsAtom* prefix_##LangValue(implementor_ aElement) { \
return LangValue(aElement); \
} \
bool prefix_##HasAttr(implementor_ aElement, nsAtom* aNS, nsAtom* aName) { \
return HasAttr(aElement, aNS, aName); \
} \
bool prefix_##AttrEquals(implementor_ aElement, nsAtom* aNS, nsAtom* aName, \
nsAtom* aStr, bool aIgnoreCase) { \
return AttrEquals(aElement, aNS, aName, aStr, aIgnoreCase); \
} \
bool prefix_##AttrDashEquals(implementor_ aElement, nsAtom* aNS, \
nsAtom* aName, nsAtom* aStr, \
bool aIgnoreCase) { \
return AttrDashEquals(aElement, aNS, aName, aStr, aIgnoreCase); \
} \
bool prefix_##AttrIncludes(implementor_ aElement, nsAtom* aNS, \
nsAtom* aName, nsAtom* aStr, bool aIgnoreCase) { \
return AttrIncludes(aElement, aNS, aName, aStr, aIgnoreCase); \
} \
bool prefix_##AttrHasSubstring(implementor_ aElement, nsAtom* aNS, \
nsAtom* aName, nsAtom* aStr, \
bool aIgnoreCase) { \
return AttrHasSubstring(aElement, aNS, aName, aStr, aIgnoreCase); \
} \
bool prefix_##AttrHasPrefix(implementor_ aElement, nsAtom* aNS, \
nsAtom* aName, nsAtom* aStr, bool aIgnoreCase) { \
return AttrHasPrefix(aElement, aNS, aName, aStr, aIgnoreCase); \
} \
bool prefix_##AttrHasSuffix(implementor_ aElement, nsAtom* aNS, \
nsAtom* aName, nsAtom* aStr, bool aIgnoreCase) { \
return AttrHasSuffix(aElement, aNS, aName, aStr, aIgnoreCase); \
}
SERVO_IMPL_ELEMENT_ATTR_MATCHING_FUNCTIONS(Gecko_, RawGeckoElementBorrowed)
SERVO_IMPL_ELEMENT_ATTR_MATCHING_FUNCTIONS(Gecko_Snapshot,
const ServoElementSnapshot*)
#undef SERVO_IMPL_ELEMENT_ATTR_MATCHING_FUNCTIONS
nsAtom* Gecko_Atomize(const char* aString, uint32_t aLength) {
return NS_Atomize(nsDependentCSubstring(aString, aLength)).take();
}
nsAtom* Gecko_Atomize16(const nsAString* aString) {
return NS_Atomize(*aString).take();
}
void Gecko_AddRefAtom(nsAtom* aAtom) { NS_ADDREF(aAtom); }
void Gecko_ReleaseAtom(nsAtom* aAtom) { NS_RELEASE(aAtom); }
void Gecko_nsTArray_FontFamilyName_AppendNamed(nsTArray<FontFamilyName>* aNames,
nsAtom* aName, bool aQuoted) {
aNames->AppendElement(
FontFamilyName(aName, aQuoted ? eQuotedName : eUnquotedName));
}
void Gecko_nsTArray_FontFamilyName_AppendGeneric(
nsTArray<FontFamilyName>* aNames, FontFamilyType aType) {
aNames->AppendElement(FontFamilyName(aType));
}
SharedFontList* Gecko_SharedFontList_Create() {
RefPtr<SharedFontList> fontlist = new SharedFontList();
return fontlist.forget().take();
}
MOZ_DEFINE_MALLOC_SIZE_OF(GeckoSharedFontListMallocSizeOf)
size_t Gecko_SharedFontList_SizeOfIncludingThisIfUnshared(
SharedFontList* aFontlist) {
MOZ_ASSERT(NS_IsMainThread());
return aFontlist->SizeOfIncludingThisIfUnshared(
GeckoSharedFontListMallocSizeOf);
}
size_t Gecko_SharedFontList_SizeOfIncludingThis(SharedFontList* aFontlist) {
MOZ_ASSERT(NS_IsMainThread());
return aFontlist->SizeOfIncludingThis(GeckoSharedFontListMallocSizeOf);
}
NS_IMPL_THREADSAFE_FFI_REFCOUNTING(mozilla::SharedFontList, SharedFontList);
void Gecko_CopyFontFamilyFrom(nsFont* dst, const nsFont* src) {
dst->fontlist = src->fontlist;
}
void Gecko_nsFont_InitSystem(nsFont* aDest, int32_t aFontId,
const nsStyleFont* aFont,
RawGeckoPresContextBorrowed aPresContext) {
const nsFont* defaultVariableFont = ThreadSafeGetDefaultFontHelper(
aPresContext, aFont->mLanguage, kPresContext_DefaultVariableFont_ID);
// We have passed uninitialized memory to this function,
// initialize it. We can't simply return an nsFont because then
// we need to know its size beforehand. Servo cannot initialize nsFont
// itself, so this will do.
nsFont* system = new (aDest) nsFont(*defaultVariableFont);
MOZ_RELEASE_ASSERT(system);
*aDest = *defaultVariableFont;
LookAndFeel::FontID fontID = static_cast<LookAndFeel::FontID>(aFontId);
AutoWriteLock guard(*sServoFFILock);
nsLayoutUtils::ComputeSystemFont(aDest, fontID, aPresContext,
defaultVariableFont);
}
void Gecko_nsFont_Destroy(nsFont* aDest) { aDest->~nsFont(); }
gfxFontFeatureValueSet* Gecko_ConstructFontFeatureValueSet() {
return new gfxFontFeatureValueSet();
}
nsTArray<unsigned int>* Gecko_AppendFeatureValueHashEntry(
gfxFontFeatureValueSet* aFontFeatureValues, nsAtom* aFamily,
uint32_t aAlternate, nsAtom* aName) {
MOZ_ASSERT(NS_IsMainThread());
static_assert(sizeof(unsigned int) == sizeof(uint32_t),
"sizeof unsigned int and uint32_t must be the same");
return aFontFeatureValues->AppendFeatureValueHashEntry(
nsAtomCString(aFamily), nsDependentAtomString(aName), aAlternate);
}
void Gecko_nsFont_SetFontFeatureValuesLookup(
nsFont* aFont, const RawGeckoPresContext* aPresContext) {
aFont->featureValueLookup = aPresContext->GetFontFeatureValuesLookup();
}
float Gecko_FontStretch_ToFloat(mozilla::FontStretch aStretch) {
// Servo represents percentages with 1. being 100%.
return aStretch.Percentage() / 100.0f;
}
void Gecko_FontStretch_SetFloat(mozilla::FontStretch* aStretch, float aFloat) {
// Servo represents percentages with 1. being 100%.
//
// Also, the font code assumes a given maximum that style doesn't really need
// to know about. So clamp here at the boundary.
*aStretch = FontStretch(std::min(aFloat * 100.0f, float(FontStretch::kMax)));
}
void Gecko_FontSlantStyle_SetNormal(mozilla::FontSlantStyle* aStyle) {
*aStyle = mozilla::FontSlantStyle::Normal();
}
void Gecko_FontSlantStyle_SetItalic(mozilla::FontSlantStyle* aStyle) {
*aStyle = mozilla::FontSlantStyle::Italic();
}
void Gecko_FontSlantStyle_SetOblique(mozilla::FontSlantStyle* aStyle,
float aAngleInDegrees) {
*aStyle = mozilla::FontSlantStyle::Oblique(aAngleInDegrees);
}
void Gecko_FontSlantStyle_Get(mozilla::FontSlantStyle aStyle, bool* aNormal,
bool* aItalic, float* aObliqueAngle) {
*aNormal = aStyle.IsNormal();
*aItalic = aStyle.IsItalic();
if (aStyle.IsOblique()) {
*aObliqueAngle = aStyle.ObliqueAngle();
}
}
float Gecko_FontWeight_ToFloat(mozilla::FontWeight aWeight) {
return aWeight.ToFloat();
}
void Gecko_FontWeight_SetFloat(mozilla::FontWeight* aWeight, float aFloat) {
*aWeight = mozilla::FontWeight(aFloat);
}
void Gecko_nsFont_ResetFontFeatureValuesLookup(nsFont* aFont) {
aFont->featureValueLookup = nullptr;
}
void Gecko_ClearAlternateValues(nsFont* aFont, size_t aLength) {
aFont->alternateValues.Clear();
aFont->alternateValues.SetCapacity(aLength);
}
void Gecko_AppendAlternateValues(nsFont* aFont, uint32_t aAlternateName,
nsAtom* aAtom) {
aFont->alternateValues.AppendElement(
gfxAlternateValue{aAlternateName, nsDependentAtomString(aAtom)});
}
void Gecko_CopyAlternateValuesFrom(nsFont* aDest, const nsFont* aSrc) {
aDest->alternateValues.Clear();
aDest->alternateValues.AppendElements(aSrc->alternateValues);
aDest->featureValueLookup = aSrc->featureValueLookup;
}
void Gecko_SetCounterStyleToName(CounterStylePtr* aPtr, nsAtom* aName,
RawGeckoPresContextBorrowed aPresContext) {
// Try resolving the counter style if possible, and keep it unresolved
// otherwise.
CounterStyleManager* manager = aPresContext->CounterStyleManager();
RefPtr<nsAtom> name = already_AddRefed<nsAtom>(aName);
if (CounterStyle* style = manager->GetCounterStyle(name)) {
*aPtr = style;
} else {
*aPtr = name.forget();
}
}
void Gecko_SetCounterStyleToSymbols(CounterStylePtr* aPtr, uint8_t aSymbolsType,
nsACString const* const* aSymbols,
uint32_t aSymbolsCount) {
nsTArray<nsString> symbols(aSymbolsCount);
for (uint32_t i = 0; i < aSymbolsCount; i++) {
symbols.AppendElement(NS_ConvertUTF8toUTF16(*aSymbols[i]));
}
*aPtr = new AnonymousCounterStyle(aSymbolsType, std::move(symbols));
}
void Gecko_SetCounterStyleToString(CounterStylePtr* aPtr,
const nsACString* aSymbol) {
*aPtr = new AnonymousCounterStyle(NS_ConvertUTF8toUTF16(*aSymbol));
}
void Gecko_CopyCounterStyle(CounterStylePtr* aDst,
const CounterStylePtr* aSrc) {
*aDst = *aSrc;
}
nsAtom* Gecko_CounterStyle_GetName(const CounterStylePtr* aPtr) {
if (!aPtr->IsResolved()) {
return aPtr->AsAtom();
}
return (*aPtr)->GetStyleName();
}
const AnonymousCounterStyle* Gecko_CounterStyle_GetAnonymous(
const CounterStylePtr* aPtr) {
return aPtr->AsAnonymous();
}
void Gecko_SetNullImageValue(nsStyleImage* aImage) {
MOZ_ASSERT(aImage);
aImage->SetNull();
}
void Gecko_SetGradientImageValue(nsStyleImage* aImage,
nsStyleGradient* aGradient) {
MOZ_ASSERT(aImage);
aImage->SetGradientData(aGradient);
}
static already_AddRefed<nsStyleImageRequest> CreateStyleImageRequest(
nsStyleImageRequest::Mode aModeFlags, URLValue* aImageValue) {
RefPtr<nsStyleImageRequest> req =
new nsStyleImageRequest(aModeFlags, aImageValue);
return req.forget();
}
void Gecko_SetLayerImageImageValue(nsStyleImage* aImage,
URLValue* aImageValue) {
MOZ_ASSERT(aImage && aImageValue);
RefPtr<nsStyleImageRequest> req =
CreateStyleImageRequest(nsStyleImageRequest::Mode::Track, aImageValue);
aImage->SetImageRequest(req.forget());
}
void Gecko_SetImageElement(nsStyleImage* aImage, nsAtom* aAtom) {
MOZ_ASSERT(aImage);
aImage->SetElementId(do_AddRef(aAtom));
}
void Gecko_CopyImageValueFrom(nsStyleImage* aImage,
const nsStyleImage* aOther) {
MOZ_ASSERT(aImage);
MOZ_ASSERT(aOther);
*aImage = *aOther;
}
void Gecko_InitializeImageCropRect(nsStyleImage* aImage) {
MOZ_ASSERT(aImage);
aImage->SetCropRect(MakeUnique<nsStyleSides>());
}
void Gecko_SetCursorArrayLength(nsStyleUI* aStyleUI, size_t aLen) {
aStyleUI->mCursorImages.Clear();
aStyleUI->mCursorImages.SetLength(aLen);
}
void Gecko_SetCursorImageValue(nsCursorImage* aCursor, URLValue* aImageValue) {
MOZ_ASSERT(aCursor && aImageValue);
aCursor->mImage =
CreateStyleImageRequest(nsStyleImageRequest::Mode::Discard, aImageValue);
}
void Gecko_CopyCursorArrayFrom(nsStyleUI* aDest, const nsStyleUI* aSrc) {
aDest->mCursorImages = aSrc->mCursorImages;
}
void Gecko_SetContentDataImageValue(nsStyleContentData* aContent,
URLValue* aImageValue) {
MOZ_ASSERT(aContent && aImageValue);
RefPtr<nsStyleImageRequest> req =
CreateStyleImageRequest(nsStyleImageRequest::Mode::Track, aImageValue);
aContent->SetImageRequest(req.forget());
}
nsStyleContentData::CounterFunction* Gecko_SetCounterFunction(
nsStyleContentData* aContent, StyleContentType aType) {
auto counterFunc = MakeRefPtr<nsStyleContentData::CounterFunction>();
auto* ptr = counterFunc.get();
aContent->SetCounters(aType, counterFunc.forget());
return ptr;
}
nsStyleGradient* Gecko_CreateGradient(uint8_t aShape, uint8_t aSize,
bool aRepeating, bool aLegacySyntax,
bool aMozLegacySyntax,
uint32_t aStopCount) {
nsStyleGradient* result = new nsStyleGradient();
result->mShape = aShape;
result->mSize = aSize;
result->mRepeating = aRepeating;
result->mLegacySyntax = aLegacySyntax;
result->mMozLegacySyntax = aMozLegacySyntax;
result->mAngle.SetNoneValue();
result->mBgPosX.SetNoneValue();
result->mBgPosY.SetNoneValue();
result->mRadiusX.SetNoneValue();
result->mRadiusY.SetNoneValue();
nsStyleGradientStop dummyStop = {nsStyleCoord(eStyleUnit_None),
StyleComplexColor::Black(), 0};
for (uint32_t i = 0; i < aStopCount; i++) {
result->mStops.AppendElement(dummyStop);
}
return result;
}
const nsStyleImageRequest* Gecko_GetImageRequest(const nsStyleImage* aImage) {
MOZ_ASSERT(aImage);
return aImage->ImageRequest();
}
nsAtom* Gecko_GetImageElement(const nsStyleImage* aImage) {
MOZ_ASSERT(aImage && aImage->GetType() == eStyleImageType_Element);
return const_cast<nsAtom*>(aImage->GetElementId());
}
const nsStyleGradient* Gecko_GetGradientImageValue(const nsStyleImage* aImage) {
MOZ_ASSERT(aImage && aImage->GetType() == eStyleImageType_Gradient);
return aImage->GetGradientData();
}
void Gecko_SetListStyleImageNone(nsStyleList* aList) {
aList->mListStyleImage = nullptr;
}
void Gecko_SetListStyleImageImageValue(nsStyleList* aList,
URLValue* aImageValue) {
MOZ_ASSERT(aList && aImageValue);
aList->mListStyleImage =
CreateStyleImageRequest(nsStyleImageRequest::Mode(0), aImageValue);
}
void Gecko_CopyListStyleImageFrom(nsStyleList* aList,
const nsStyleList* aSource) {
aList->mListStyleImage = aSource->mListStyleImage;
}
void Gecko_EnsureTArrayCapacity(void* aArray, size_t aCapacity,
size_t aElemSize) {
auto base = reinterpret_cast<
nsTArray_base<nsTArrayInfallibleAllocator, nsTArray_CopyWithMemutils>*>(
aArray);
base->EnsureCapacity<nsTArrayInfallibleAllocator>(aCapacity, aElemSize);
}
void Gecko_ClearPODTArray(void* aArray, size_t aElementSize,
size_t aElementAlign) {
auto base = reinterpret_cast<
nsTArray_base<nsTArrayInfallibleAllocator, nsTArray_CopyWithMemutils>*>(
aArray);
base->template ShiftData<nsTArrayInfallibleAllocator>(
0, base->Length(), 0, aElementSize, aElementAlign);
}
void Gecko_ResizeTArrayForStrings(nsTArray<nsString>* aArray,
uint32_t aLength) {
aArray->SetLength(aLength);
}
void Gecko_SetStyleGridTemplate(UniquePtr<nsStyleGridTemplate>* aGridTemplate,
nsStyleGridTemplate* aValue) {
aGridTemplate->reset(aValue);
}
nsStyleGridTemplate* Gecko_CreateStyleGridTemplate(uint32_t aTrackSizes,
uint32_t aNameSize) {
nsStyleGridTemplate* result = new nsStyleGridTemplate;
result->mMinTrackSizingFunctions.SetLength(aTrackSizes);
result->mMaxTrackSizingFunctions.SetLength(aTrackSizes);
result->mLineNameLists.SetLength(aNameSize);
return result;
}
void Gecko_CopyStyleGridTemplateValues(
UniquePtr<nsStyleGridTemplate>* aGridTemplate,
const nsStyleGridTemplate* aOther) {
if (aOther) {
*aGridTemplate = MakeUnique<nsStyleGridTemplate>(*aOther);
} else {
*aGridTemplate = nullptr;
}
}
GridTemplateAreasValue* Gecko_NewGridTemplateAreasValue(uint32_t aAreas,
uint32_t aTemplates,
uint32_t aColumns) {
RefPtr<GridTemplateAreasValue> value = new GridTemplateAreasValue;
value->mNamedAreas.SetLength(aAreas);
value->mTemplates.SetLength(aTemplates);
value->mNColumns = aColumns;
return value.forget().take();
}
NS_IMPL_THREADSAFE_FFI_REFCOUNTING(GridTemplateAreasValue,
GridTemplateAreasValue);
void Gecko_ClearAndResizeStyleContents(nsStyleContent* aContent,
uint32_t aHowMany) {
aContent->AllocateContents(aHowMany);
}
void Gecko_CopyStyleContentsFrom(nsStyleContent* aContent,
const nsStyleContent* aOther) {
uint32_t count = aOther->ContentCount();
aContent->AllocateContents(count);
for (uint32_t i = 0; i < count; ++i) {
aContent->ContentAt(i) = aOther->ContentAt(i);
}
}
void Gecko_ClearAndResizeCounterIncrements(nsStyleContent* aContent,
uint32_t aHowMany) {
aContent->AllocateCounterIncrements(aHowMany);
}
void Gecko_CopyCounterIncrementsFrom(nsStyleContent* aContent,
const nsStyleContent* aOther) {
uint32_t count = aOther->CounterIncrementCount();
aContent->AllocateCounterIncrements(count);
for (uint32_t i = 0; i < count; ++i) {
const nsStyleCounterData& data = aOther->CounterIncrementAt(i);
aContent->SetCounterIncrementAt(i, data.mCounter, data.mValue);
}
}
void Gecko_ClearAndResizeCounterResets(nsStyleContent* aContent,
uint32_t aHowMany) {
aContent->AllocateCounterResets(aHowMany);
}
void Gecko_CopyCounterResetsFrom(nsStyleContent* aContent,
const nsStyleContent* aOther) {
uint32_t count = aOther->CounterResetCount();
aContent->AllocateCounterResets(count);
for (uint32_t i = 0; i < count; ++i) {
const nsStyleCounterData& data = aOther->CounterResetAt(i);
aContent->SetCounterResetAt(i, data.mCounter, data.mValue);
}
}
void Gecko_EnsureImageLayersLength(nsStyleImageLayers* aLayers, size_t aLen,
nsStyleImageLayers::LayerType aLayerType) {
size_t oldLength = aLayers->mLayers.Length();
aLayers->mLayers.EnsureLengthAtLeast(aLen);
for (size_t i = oldLength; i < aLen; ++i) {
aLayers->mLayers[i].Initialize(aLayerType);
}
}
template <typename StyleType>
static void EnsureStyleAutoArrayLength(StyleType* aArray, size_t aLen) {
size_t oldLength = aArray->Length();
aArray->EnsureLengthAtLeast(aLen);
for (size_t i = oldLength; i < aLen; ++i) {
(*aArray)[i].SetInitialValues();
}
}
void Gecko_EnsureStyleAnimationArrayLength(void* aArray, size_t aLen) {
auto base = static_cast<nsStyleAutoArray<StyleAnimation>*>(aArray);
EnsureStyleAutoArrayLength(base, aLen);
}
void Gecko_EnsureStyleTransitionArrayLength(void* aArray, size_t aLen) {
auto base = reinterpret_cast<nsStyleAutoArray<StyleTransition>*>(aArray);
EnsureStyleAutoArrayLength(base, aLen);
}
void Gecko_ClearWillChange(nsStyleDisplay* aDisplay, size_t aLength) {
aDisplay->mWillChange.Clear();
aDisplay->mWillChange.SetCapacity(aLength);
}
void Gecko_AppendWillChange(nsStyleDisplay* aDisplay, nsAtom* aAtom) {
aDisplay->mWillChange.AppendElement(aAtom);
}
void Gecko_CopyWillChangeFrom(nsStyleDisplay* aDest, nsStyleDisplay* aSrc) {
aDest->mWillChange.Clear();
aDest->mWillChange.AppendElements(aSrc->mWillChange);
}
enum class KeyframeSearchDirection {
Forwards,
Backwards,
};
enum class KeyframeInsertPosition {
Prepend,
LastForOffset,
};
static Keyframe* GetOrCreateKeyframe(nsTArray<Keyframe>* aKeyframes,
float aOffset,
const nsTimingFunction* aTimingFunction,
KeyframeSearchDirection aSearchDirection,
KeyframeInsertPosition aInsertPosition) {
MOZ_ASSERT(aKeyframes, "The keyframe array should be valid");
MOZ_ASSERT(aTimingFunction, "The timing function should be valid");
MOZ_ASSERT(aOffset >= 0. && aOffset <= 1.,
"The offset should be in the range of [0.0, 1.0]");
size_t keyframeIndex;
switch (aSearchDirection) {
case KeyframeSearchDirection::Forwards:
if (nsAnimationManager::FindMatchingKeyframe(
*aKeyframes, aOffset, *aTimingFunction, keyframeIndex)) {
return &(*aKeyframes)[keyframeIndex];
}
break;
case KeyframeSearchDirection::Backwards:
if (nsAnimationManager::FindMatchingKeyframe(Reversed(*aKeyframes),
aOffset, *aTimingFunction,
keyframeIndex)) {
return &(*aKeyframes)[aKeyframes->Length() - 1 - keyframeIndex];
}
keyframeIndex = aKeyframes->Length() - 1;
break;
}
Keyframe* keyframe = aKeyframes->InsertElementAt(
aInsertPosition == KeyframeInsertPosition::Prepend ? 0 : keyframeIndex);
keyframe->mOffset.emplace(aOffset);
if (!aTimingFunction->IsLinear()) {
keyframe->mTimingFunction.emplace();
keyframe->mTimingFunction->Init(*aTimingFunction);
}
return keyframe;
}
Keyframe* Gecko_GetOrCreateKeyframeAtStart(
nsTArray<Keyframe>* aKeyframes, float aOffset,
const nsTimingFunction* aTimingFunction) {
MOZ_ASSERT(aKeyframes->IsEmpty() ||
aKeyframes->ElementAt(0).mOffset.value() >= aOffset,
"The offset should be less than or equal to the first keyframe's "
"offset if there are exisiting keyframes");
return GetOrCreateKeyframe(aKeyframes, aOffset, aTimingFunction,
KeyframeSearchDirection::Forwards,
KeyframeInsertPosition::Prepend);
}
Keyframe* Gecko_GetOrCreateInitialKeyframe(
nsTArray<Keyframe>* aKeyframes, const nsTimingFunction* aTimingFunction) {
return GetOrCreateKeyframe(aKeyframes, 0., aTimingFunction,
KeyframeSearchDirection::Forwards,
KeyframeInsertPosition::LastForOffset);
}
Keyframe* Gecko_GetOrCreateFinalKeyframe(
nsTArray<Keyframe>* aKeyframes, const nsTimingFunction* aTimingFunction) {
return GetOrCreateKeyframe(aKeyframes, 1., aTimingFunction,
KeyframeSearchDirection::Backwards,
KeyframeInsertPosition::LastForOffset);
}
PropertyValuePair* Gecko_AppendPropertyValuePair(
nsTArray<PropertyValuePair>* aProperties, nsCSSPropertyID aProperty) {
MOZ_ASSERT(aProperties);
MOZ_ASSERT(aProperty == eCSSPropertyExtra_variable ||
!nsCSSProps::PropHasFlags(aProperty, CSSPropFlags::IsLogical));
return aProperties->AppendElement(PropertyValuePair{aProperty});
}
void Gecko_ResetStyleCoord(nsStyleUnit* aUnit, nsStyleUnion* aValue) {
nsStyleCoord::Reset(*aUnit, *aValue);
}
void Gecko_SetStyleCoordCalcValue(nsStyleUnit* aUnit, nsStyleUnion* aValue,
nsStyleCoord::CalcValue aCalc) {
// Calc units should be cleaned up first
MOZ_ASSERT(*aUnit != nsStyleUnit::eStyleUnit_Calc);
nsStyleCoord::Calc* calcRef = new nsStyleCoord::Calc();
calcRef->mLength = aCalc.mLength;
calcRef->mPercent = aCalc.mPercent;
calcRef->mHasPercent = aCalc.mHasPercent;
*aUnit = nsStyleUnit::eStyleUnit_Calc;
aValue->mPointer = calcRef;
calcRef->AddRef();
}
void Gecko_CopyShapeSourceFrom(mozilla::StyleShapeSource* aDst,
const mozilla::StyleShapeSource* aSrc) {
MOZ_ASSERT(aDst);
MOZ_ASSERT(aSrc);
*aDst = *aSrc;
}
void Gecko_DestroyShapeSource(mozilla::StyleShapeSource* aShape) {
aShape->~StyleShapeSource();
}
void Gecko_StyleShapeSource_SetURLValue(StyleShapeSource* aShape,
URLValue* aURL) {
aShape->SetURL(*aURL);
}
void Gecko_NewBasicShape(mozilla::StyleShapeSource* aShape,
mozilla::StyleBasicShapeType aType) {
aShape->SetBasicShape(MakeUnique<mozilla::StyleBasicShape>(aType),
StyleGeometryBox::NoBox);
}
void Gecko_NewShapeImage(mozilla::StyleShapeSource* aShape) {
aShape->SetShapeImage(MakeUnique<nsStyleImage>());
}
void Gecko_NewStyleSVGPath(mozilla::StyleShapeSource* aShape) {
MOZ_ASSERT(aShape);
aShape->SetPath(MakeUnique<mozilla::StyleSVGPath>());
}
void Gecko_SetStyleMotion(UniquePtr<mozilla::StyleMotion>* aMotion,
mozilla::StyleMotion* aValue) {
MOZ_ASSERT(aMotion);
aMotion->reset(aValue);
}
mozilla::StyleMotion* Gecko_NewStyleMotion() { return new StyleMotion(); }
void Gecko_CopyStyleMotions(mozilla::UniquePtr<mozilla::StyleMotion>* aMotion,
const mozilla::StyleMotion* aOther) {
MOZ_ASSERT(aMotion);
*aMotion = aOther ? MakeUnique<StyleMotion>(*aOther) : nullptr;
}
void Gecko_ResetFilters(nsStyleEffects* effects, size_t new_len) {
effects->mFilters.Clear();
effects->mFilters.SetLength(new_len);
}
void Gecko_CopyFiltersFrom(nsStyleEffects* aSrc, nsStyleEffects* aDest) {
aDest->mFilters = aSrc->mFilters;
}
void Gecko_nsStyleFilter_SetURLValue(nsStyleFilter* aEffects, URLValue* aURL) {
aEffects->SetURL(aURL);
}
void Gecko_nsStyleSVGPaint_CopyFrom(nsStyleSVGPaint* aDest,
const nsStyleSVGPaint* aSrc) {
*aDest = *aSrc;
}
void Gecko_nsStyleSVGPaint_SetURLValue(nsStyleSVGPaint* aPaint,
URLValue* aURL) {
aPaint->SetPaintServer(aURL);
}
void Gecko_nsStyleSVGPaint_Reset(nsStyleSVGPaint* aPaint) { aPaint->SetNone(); }
void Gecko_nsStyleSVG_SetDashArrayLength(nsStyleSVG* aSvg, uint32_t aLen) {
aSvg->mStrokeDasharray.Clear();
aSvg->mStrokeDasharray.SetLength(aLen);
}
void Gecko_nsStyleSVG_CopyDashArray(nsStyleSVG* aDst, const nsStyleSVG* aSrc) {
aDst->mStrokeDasharray = aSrc->mStrokeDasharray;
}
void Gecko_nsStyleSVG_SetContextPropertiesLength(nsStyleSVG* aSvg,
uint32_t aLen) {
aSvg->mContextProps.Clear();
aSvg->mContextProps.SetLength(aLen);
}
void Gecko_nsStyleSVG_CopyContextProperties(nsStyleSVG* aDst,
const nsStyleSVG* aSrc) {
aDst->mContextProps = aSrc->mContextProps;
aDst->mContextPropsBits = aSrc->mContextPropsBits;
}
css::URLValue* Gecko_URLValue_Create(RawServoCssUrlDataStrong aCssUrl,
CORSMode aCORSMode) {
RefPtr<css::URLValue> url = new css::URLValue(aCssUrl.Consume(), aCORSMode);
return url.forget().take();
}
MOZ_DEFINE_MALLOC_SIZE_OF(GeckoURLValueMallocSizeOf)
size_t Gecko_URLValue_SizeOfIncludingThis(URLValue* aURL) {
MOZ_ASSERT(NS_IsMainThread());
return aURL->SizeOfIncludingThis(GeckoURLValueMallocSizeOf);
}
void Gecko_GetComputedURLSpec(const URLValue* aURL, nsCString* aOut) {
MOZ_ASSERT(aURL);
MOZ_ASSERT(aOut);
if (aURL->IsLocalRef()) {
aOut->Assign(aURL->GetString());
return;
}
Gecko_GetComputedImageURLSpec(aURL, aOut);
}
void Gecko_GetComputedImageURLSpec(const URLValue* aURL, nsCString* aOut) {
// Image URIs don't serialize local refs as local.
if (nsIURI* uri = aURL->GetURI()) {
nsresult rv = uri->GetSpec(*aOut);
if (NS_SUCCEEDED(rv)) {
return;
}
}
aOut->AssignLiteral("about:invalid");
}
void Gecko_nsIURI_Debug(nsIURI* aURI, nsCString* aOut) {
// TODO(emilio): Do we have more useful stuff to put here, maybe?
if (aURI) {
*aOut = aURI->GetSpecOrDefault();
}
}
template <typename ElementLike>
void DebugListAttributes(const ElementLike& aElement, nsCString& aOut) {
const uint32_t kMaxAttributeLength = 40;
uint32_t i = 0;
while (BorrowedAttrInfo info = aElement.GetAttrInfoAt(i++)) {
aOut.AppendLiteral(" ");
if (nsAtom* prefix = info.mName->GetPrefix()) {
aOut.Append(NS_ConvertUTF16toUTF8(nsDependentAtomString(prefix)));
aOut.AppendLiteral(":");
}
aOut.Append(
NS_ConvertUTF16toUTF8(nsDependentAtomString(info.mName->LocalName())));
if (!info.mValue) {
continue;
}
aOut.AppendLiteral("=\"");
nsAutoString value;
info.mValue->ToString(value);
if (value.Length() > kMaxAttributeLength) {
value.Truncate(kMaxAttributeLength - 3);
value.AppendLiteral("...");
}
aOut.Append(NS_ConvertUTF16toUTF8(value));
aOut.AppendLiteral("\"");
}
}
void Gecko_Element_DebugListAttributes(RawGeckoElementBorrowed aElement,
nsCString* aOut) {
DebugListAttributes(*aElement, *aOut);
}
void Gecko_Snapshot_DebugListAttributes(const ServoElementSnapshot* aSnapshot,
nsCString* aOut) {
DebugListAttributes(*aSnapshot, *aOut);
}
NS_IMPL_THREADSAFE_FFI_REFCOUNTING(css::URLValue, CSSURLValue);
NS_IMPL_THREADSAFE_FFI_REFCOUNTING(URLExtraData, URLExtraData);
NS_IMPL_THREADSAFE_FFI_REFCOUNTING(nsStyleCoord::Calc, Calc);
nsCSSShadowArray* Gecko_NewCSSShadowArray(uint32_t aLen) {
RefPtr<nsCSSShadowArray> arr = new (aLen) nsCSSShadowArray(aLen);
return arr.forget().take();
}
NS_IMPL_THREADSAFE_FFI_REFCOUNTING(nsCSSShadowArray, CSSShadowArray);
nsCSSValueSharedList* Gecko_NewCSSValueSharedList(uint32_t aLen) {
RefPtr<nsCSSValueSharedList> list = new nsCSSValueSharedList;
if (aLen == 0) {
return list.forget().take();
}
list->mHead = new nsCSSValueList;
nsCSSValueList* cur = list->mHead;
for (uint32_t i = 0; i < aLen - 1; i++) {
cur->mNext = new nsCSSValueList;
cur = cur->mNext;
}
return list.forget().take();
}
nsCSSValueSharedList* Gecko_NewNoneTransform() {
RefPtr<nsCSSValueSharedList> list = new nsCSSValueSharedList;
list->mHead = new nsCSSValueList;
list->mHead->mValue.SetNoneValue();
return list.forget().take();
}
void Gecko_CSSValue_SetNumber(nsCSSValueBorrowedMut aCSSValue, float aNumber) {
aCSSValue->SetFloatValue(aNumber, eCSSUnit_Number);
}
float Gecko_CSSValue_GetNumber(nsCSSValueBorrowed aCSSValue) {
return aCSSValue->GetFloatValue();
}
void Gecko_CSSValue_SetKeyword(nsCSSValueBorrowedMut aCSSValue,
nsCSSKeyword aKeyword) {
aCSSValue->SetEnumValue(aKeyword);
}
nsCSSKeyword Gecko_CSSValue_GetKeyword(nsCSSValueBorrowed aCSSValue) {
return aCSSValue->GetKeywordValue();
}
void Gecko_CSSValue_SetPercentage(nsCSSValueBorrowedMut aCSSValue,
float aPercent) {
aCSSValue->SetPercentValue(aPercent);
}
float Gecko_CSSValue_GetPercentage(nsCSSValueBorrowed aCSSValue) {
return aCSSValue->GetPercentValue();
}
void Gecko_CSSValue_SetPixelLength(nsCSSValueBorrowedMut aCSSValue,
float aLen) {
MOZ_ASSERT(aCSSValue->GetUnit() == eCSSUnit_Null ||
aCSSValue->GetUnit() == eCSSUnit_Pixel);
aCSSValue->SetFloatValue(aLen, eCSSUnit_Pixel);
}
void Gecko_CSSValue_SetCalc(nsCSSValueBorrowedMut aCSSValue,
nsStyleCoord::CalcValue aCalc) {
aCSSValue->SetCalcValue(aCalc);
}
nsStyleCoord::CalcValue Gecko_CSSValue_GetCalc(nsCSSValueBorrowed aCSSValue) {
return aCSSValue->GetCalcValue();
}
void Gecko_CSSValue_SetFunction(nsCSSValueBorrowedMut aCSSValue, int32_t aLen) {
nsCSSValue::Array* arr = nsCSSValue::Array::Create(aLen);
aCSSValue->SetArrayValue(arr, eCSSUnit_Function);
}
void Gecko_CSSValue_SetString(nsCSSValueBorrowedMut aCSSValue,
const uint8_t* aString, uint32_t aLength,
nsCSSUnit aUnit) {
MOZ_ASSERT(aCSSValue->GetUnit() == eCSSUnit_Null);
nsString string;
nsDependentCSubstring slice(reinterpret_cast<const char*>(aString), aLength);
AppendUTF8toUTF16(slice, string);
aCSSValue->SetStringValue(string, aUnit);
}
void Gecko_CSSValue_SetStringFromAtom(nsCSSValueBorrowedMut aCSSValue,
nsAtom* aAtom, nsCSSUnit aUnit) {
aCSSValue->SetStringValue(nsDependentAtomString(aAtom), aUnit);
}
void Gecko_CSSValue_SetAtomIdent(nsCSSValueBorrowedMut aCSSValue,
nsAtom* aAtom) {
aCSSValue->SetAtomIdentValue(already_AddRefed<nsAtom>(aAtom));
}
void Gecko_CSSValue_SetArray(nsCSSValueBorrowedMut aCSSValue, int32_t aLength) {
MOZ_ASSERT(aCSSValue->GetUnit() == eCSSUnit_Null);
RefPtr<nsCSSValue::Array> array = nsCSSValue::Array::Create(aLength);
aCSSValue->SetArrayValue(array, eCSSUnit_Array);
}
void Gecko_CSSValue_SetInt(nsCSSValueBorrowedMut aCSSValue, int32_t aInteger,
nsCSSUnit aUnit) {
aCSSValue->SetIntValue(aInteger, aUnit);
}
void Gecko_CSSValue_SetFloat(nsCSSValueBorrowedMut aCSSValue, float aValue,
nsCSSUnit aUnit) {
aCSSValue->SetFloatValue(aValue, aUnit);
}
nsCSSValueBorrowedMut Gecko_CSSValue_GetArrayItem(
nsCSSValueBorrowedMut aCSSValue, int32_t aIndex) {
return &aCSSValue->GetArrayValue()->Item(aIndex);
}
nsCSSValueBorrowed Gecko_CSSValue_GetArrayItemConst(
nsCSSValueBorrowed aCSSValue, int32_t aIndex) {
return &aCSSValue->GetArrayValue()->Item(aIndex);
}
void Gecko_CSSValue_SetPair(nsCSSValueBorrowedMut aCSSValue,
nsCSSValueBorrowed aXValue,
nsCSSValueBorrowed aYValue) {
MOZ_ASSERT(NS_IsMainThread());
aCSSValue->SetPairValue(*aXValue, *aYValue);
}
void Gecko_CSSValue_SetList(nsCSSValueBorrowedMut aCSSValue, uint32_t aLen) {
MOZ_ASSERT(NS_IsMainThread());
nsCSSValueList* item = aCSSValue->SetListValue();
for (uint32_t i = 1; i < aLen; ++i) {
item->mNext = new nsCSSValueList;
item = item->mNext;
}
}
void Gecko_CSSValue_SetPairList(nsCSSValueBorrowedMut aCSSValue,
uint32_t aLen) {
MOZ_ASSERT(NS_IsMainThread());
nsCSSValuePairList* item = aCSSValue->SetPairListValue();
for (uint32_t i = 1; i < aLen; ++i) {
item->mNext = new nsCSSValuePairList;
item = item->mNext;
}
}
void Gecko_CSSValue_InitSharedList(nsCSSValueBorrowedMut aCSSValue,
uint32_t aLen) {
MOZ_ASSERT(aLen > 0, "Must create at least one nsCSSValueList (mHead)");
nsCSSValueSharedList* list = new nsCSSValueSharedList;
aCSSValue->SetSharedListValue(list);
list->mHead = new nsCSSValueList;
nsCSSValueList* cur = list->mHead;
for (uint32_t i = 1; i < aLen; ++i) {
cur->mNext = new nsCSSValueList;
cur = cur->mNext;
}
}
void Gecko_CSSValue_Drop(nsCSSValueBorrowedMut aCSSValue) {
aCSSValue->~nsCSSValue();
}
void Gecko_nsStyleFont_SetLang(nsStyleFont* aFont, nsAtom* aAtom) {
aFont->mLanguage = dont_AddRef(aAtom);
aFont->mExplicitLanguage = true;
}
void Gecko_nsStyleFont_CopyLangFrom(nsStyleFont* aFont,
const nsStyleFont* aSource) {
aFont->mLanguage = aSource->mLanguage;
}
void Gecko_nsStyleFont_FixupNoneGeneric(
nsStyleFont* aFont, RawGeckoPresContextBorrowed aPresContext) {
const nsFont* defaultVariableFont = ThreadSafeGetDefaultFontHelper(
aPresContext, aFont->mLanguage, kPresContext_DefaultVariableFont_ID);
nsLayoutUtils::FixupNoneGeneric(&aFont->mFont, aPresContext,
aFont->mGenericID, defaultVariableFont);
}
void Gecko_nsStyleFont_PrefillDefaultForGeneric(
nsStyleFont* aFont, RawGeckoPresContextBorrowed aPresContext,
uint8_t aGenericId) {
const nsFont* defaultFont = ThreadSafeGetDefaultFontHelper(
aPresContext, aFont->mLanguage, aGenericId);
// In case of just the language changing, the parent could have had no
// generic, which Gecko just does regular cascading with. Do the same. This
// can only happen in the case where the language changed but the family did
// not
if (aGenericId != kGenericFont_NONE) {
aFont->mFont.fontlist = defaultFont->fontlist;
} else {
aFont->mFont.fontlist.SetDefaultFontType(
defaultFont->fontlist.GetDefaultFontType());
}
}
void Gecko_nsStyleFont_FixupMinFontSize(
nsStyleFont* aFont, RawGeckoPresContextBorrowed aPresContext) {
nscoord minFontSize;
bool needsCache = false;
{
AutoReadLock guard(*sServoFFILock);
minFontSize = aPresContext->MinFontSize(aFont->mLanguage, &needsCache);
}
if (needsCache) {
AutoWriteLock guard(*sServoFFILock);
minFontSize = aPresContext->MinFontSize(aFont->mLanguage, nullptr);
}
nsLayoutUtils::ApplyMinFontSize(aFont, aPresContext, minFontSize);
}
void FontSizePrefs::CopyFrom(const LangGroupFontPrefs& prefs) {
mDefaultVariableSize = prefs.mDefaultVariableFont.size;
mDefaultFixedSize = prefs.mDefaultFixedFont.size;
mDefaultSerifSize = prefs.mDefaultSerifFont.size;
mDefaultSansSerifSize = prefs.mDefaultSansSerifFont.size;
mDefaultMonospaceSize = prefs.mDefaultMonospaceFont.size;
mDefaultCursiveSize = prefs.mDefaultCursiveFont.size;
mDefaultFantasySize = prefs.mDefaultFantasyFont.size;
}
FontSizePrefs Gecko_GetBaseSize(nsAtom* aLanguage) {
LangGroupFontPrefs prefs;
RefPtr<nsAtom> langGroupAtom =
StaticPresData::Get()->GetUncachedLangGroup(aLanguage);
prefs.Initialize(langGroupAtom);
FontSizePrefs sizes;
sizes.CopyFrom(prefs);
return sizes;
}
RawGeckoElementBorrowedOrNull Gecko_GetBindingParent(
RawGeckoElementBorrowed aElement) {
nsIContent* parent = aElement->GetBindingParent();
return parent ? parent->AsElement() : nullptr;
}
RawServoAuthorStylesBorrowedOrNull Gecko_XBLBinding_GetRawServoStyles(
RawGeckoXBLBindingBorrowed aXBLBinding) {
return aXBLBinding->GetServoStyles();
}
bool Gecko_XBLBinding_InheritsStyle(RawGeckoXBLBindingBorrowed aXBLBinding) {
return aXBLBinding->InheritsStyle();
}
static StaticRefPtr<UACacheReporter> gUACacheReporter;
namespace mozilla {
void InitializeServo() {
URLExtraData::InitDummy();
Servo_Initialize(URLExtraData::Dummy());
gUACacheReporter = new UACacheReporter();
RegisterWeakMemoryReporter(gUACacheReporter);
sServoFFILock = new RWLock("Servo::FFILock");
}
void ShutdownServo() {
MOZ_ASSERT(sServoFFILock);
UnregisterWeakMemoryReporter(gUACacheReporter);
gUACacheReporter = nullptr;
delete sServoFFILock;
Servo_Shutdown();
}
void AssertIsMainThreadOrServoFontMetricsLocked() {
if (!NS_IsMainThread()) {
MOZ_ASSERT(sServoFFILock &&
sServoFFILock->LockedForWritingByCurrentThread());
}
}
} // namespace mozilla
GeckoFontMetrics Gecko_GetFontMetrics(RawGeckoPresContextBorrowed aPresContext,
bool aIsVertical,
const nsStyleFont* aFont,
nscoord aFontSize, bool aUseUserFontSet) {
AutoWriteLock guard(*sServoFFILock);
GeckoFontMetrics ret;
// Getting font metrics can require some main thread only work to be
// done, such as work that needs to touch non-threadsafe refcounted
// objects (like the DOM FontFace/FontFaceSet objects), network loads, etc.
//
// To handle this work, font code checks whether we are in a Servo traversal
// and if so, appends PostTraversalTasks to the current ServoStyleSet
// to be performed immediately after the traversal is finished. This
// works well for starting downloadable font loads, since we don't have
// those fonts available to get metrics for anyway. Platform fonts and
// ArrayBuffer-backed FontFace objects are handled synchronously.
nsPresContext* presContext = const_cast<nsPresContext*>(aPresContext);
presContext->SetUsesExChUnits(true);
RefPtr<nsFontMetrics> fm = nsLayoutUtils::GetMetricsFor(
presContext, aIsVertical, aFont, aFontSize, aUseUserFontSet,
nsLayoutUtils::FlushUserFontSet::No);
ret.mXSize = fm->XHeight();
gfxFloat zeroWidth = fm->GetThebesFontGroup()
->GetFirstValidFont()
->GetMetrics(fm->Orientation())
.zeroOrAveCharWidth;
ret.mChSize = NS_round(aPresContext->AppUnitsPerDevPixel() * zeroWidth);
return ret;
}
int32_t Gecko_GetAppUnitsPerPhysicalInch(
RawGeckoPresContextBorrowed aPresContext) {
nsPresContext* presContext = const_cast<nsPresContext*>(aPresContext);
return presContext->DeviceContext()->AppUnitsPerPhysicalInch();
}
NS_IMPL_THREADSAFE_FFI_REFCOUNTING(SheetLoadDataHolder, SheetLoadDataHolder);
void Gecko_StyleSheet_FinishAsyncParse(
SheetLoadDataHolder* aData, RawServoStyleSheetContentsStrong aSheetContents,
StyleUseCountersOwned aUseCounters) {
UniquePtr<StyleUseCounters> useCounters(aUseCounters);
RefPtr<SheetLoadDataHolder> loadData = aData;
RefPtr<RawServoStyleSheetContents> sheetContents = aSheetContents.Consume();
NS_DispatchToMainThread(NS_NewRunnableFunction(
__func__, [d = std::move(loadData), contents = std::move(sheetContents),
counters = std::move(useCounters)]() mutable {
MOZ_ASSERT(NS_IsMainThread());
SheetLoadData* data = d->get();
if (nsIDocument* doc = data->mLoader->GetDocument()) {
if (const StyleUseCounters* docCounters =
doc->GetStyleUseCounters()) {
Servo_UseCounters_Merge(docCounters, counters.get());
}
}
data->mSheet->FinishAsyncParse(contents.forget());
}));
}
static already_AddRefed<StyleSheet> LoadImportSheet(
css::Loader* aLoader, StyleSheet* aParent, SheetLoadData* aParentLoadData,
css::LoaderReusableStyleSheets* aReusableSheets, css::URLValue* aURL,
already_AddRefed<RawServoMediaList> aMediaList) {
MOZ_ASSERT(NS_IsMainThread());
MOZ_ASSERT(aLoader, "Should've catched this before");
MOZ_ASSERT(aParent, "Only used for @import, so parent should exist!");
MOZ_ASSERT(aURL, "Invalid URLs shouldn't be loaded!");
RefPtr<dom::MediaList> media = new MediaList(std::move(aMediaList));
nsCOMPtr<nsIURI> uri = aURL->GetURI();
nsresult rv = uri ? NS_OK : NS_ERROR_FAILURE;
StyleSheet* previousFirstChild = aParent->GetFirstChild();
if (NS_SUCCEEDED(rv)) {
rv = aLoader->LoadChildSheet(aParent, aParentLoadData, uri, media,
aReusableSheets);
}
if (NS_FAILED(rv) || !aParent->GetFirstChild() ||
aParent->GetFirstChild() == previousFirstChild) {
// Servo and Gecko have different ideas of what a valid URL is, so we might
// get in here with a URL string that NS_NewURI can't handle. We may also
// reach here via an import cycle. For the import cycle case, we need some
// sheet object per spec, even if its empty. DevTools uses the URI to
// realize it has hit an import cycle, so we mark it complete to make the
// sheet readable from JS.
RefPtr<StyleSheet> emptySheet =
aParent->CreateEmptyChildSheet(media.forget());
// Make a dummy URI if we don't have one because some methods assume
// non-null URIs.
if (!uri) {
NS_NewURI(getter_AddRefs(uri), NS_LITERAL_CSTRING("about:invalid"));
}
emptySheet->SetURIs(uri, uri, uri);
emptySheet->SetPrincipal(aURL->ExtraData()->Principal());
emptySheet->SetComplete();
aParent->PrependStyleSheet(emptySheet);
return emptySheet.forget();
}
RefPtr<StyleSheet> sheet = static_cast<StyleSheet*>(aParent->GetFirstChild());
return sheet.forget();
}
StyleSheet* Gecko_LoadStyleSheet(
css::Loader* aLoader, StyleSheet* aParent, SheetLoadData* aParentLoadData,
css::LoaderReusableStyleSheets* aReusableSheets,
RawServoCssUrlDataStrong aCssUrl, RawServoMediaListStrong aMediaList) {
MOZ_ASSERT(NS_IsMainThread());
// The CORS mode in the URLValue is irrelevant here.
// (CORS_NONE is used for all imported sheets in Load::LoadChildSheet.)
RefPtr<css::URLValue> url = new css::URLValue(aCssUrl.Consume(), CORS_NONE);
return LoadImportSheet(aLoader, aParent, aParentLoadData, aReusableSheets,
url, aMediaList.Consume())
.take();
}
void Gecko_LoadStyleSheetAsync(css::SheetLoadDataHolder* aParentData,
RawServoCssUrlDataStrong aCssUrl,
RawServoMediaListStrong aMediaList,
RawServoImportRuleStrong aImportRule) {
RefPtr<SheetLoadDataHolder> loadData = aParentData;
// The CORS mode in the URLValue is irrelevant here.
// (CORS_NONE is used for all imported sheets in Load::LoadChildSheet.)
RefPtr<css::URLValue> urlVal =
new css::URLValue(aCssUrl.Consume(), CORS_NONE);
RefPtr<RawServoMediaList> mediaList = aMediaList.Consume();
RefPtr<RawServoImportRule> importRule = aImportRule.Consume();
NS_DispatchToMainThread(NS_NewRunnableFunction(
__func__,
[data = std::move(loadData), url = std::move(urlVal),
media = std::move(mediaList), import = std::move(importRule)]() mutable {
MOZ_ASSERT(NS_IsMainThread());
SheetLoadData* d = data->get();
RefPtr<StyleSheet> sheet = LoadImportSheet(
d->mLoader, d->mSheet, d, nullptr, url, media.forget());
Servo_ImportRule_SetSheet(import, sheet);
}));
}
nsCSSKeyword Gecko_LookupCSSKeyword(const uint8_t* aString, uint32_t aLength) {
nsDependentCSubstring keyword(reinterpret_cast<const char*>(aString),
aLength);
return nsCSSKeywords::LookupKeyword(keyword);
}
const char* Gecko_CSSKeywordString(nsCSSKeyword aKeyword, uint32_t* aLength) {
MOZ_ASSERT(NS_IsMainThread());
MOZ_ASSERT(aLength);
const nsCString& value = nsCSSKeywords::GetStringValue(aKeyword);
*aLength = value.Length();
return value.get();
}
void Gecko_AddPropertyToSet(nsCSSPropertyIDSetBorrowedMut aPropertySet,
nsCSSPropertyID aProperty) {
aPropertySet->AddProperty(aProperty);
}
NS_IMPL_THREADSAFE_FFI_REFCOUNTING(nsCSSValueSharedList, CSSValueSharedList);
#define STYLE_STRUCT(name) \
\
void Gecko_Construct_Default_nsStyle##name( \
nsStyle##name* ptr, const nsPresContext* pres_context) { \
new (ptr) nsStyle##name(pres_context); \
} \
\
void Gecko_CopyConstruct_nsStyle##name(nsStyle##name* ptr, \
const nsStyle##name* other) { \
new (ptr) nsStyle##name(*other); \
} \
\
void Gecko_Destroy_nsStyle##name(nsStyle##name* ptr) { \
ptr->~nsStyle##name(); \
}
void Gecko_RegisterProfilerThread(const char* name) {
PROFILER_REGISTER_THREAD(name);
}
void Gecko_UnregisterProfilerThread() { PROFILER_UNREGISTER_THREAD(); }
bool Gecko_DocumentRule_UseForPresentation(
RawGeckoPresContextBorrowed aPresContext, const nsACString* aPattern,
css::DocumentMatchingFunction aMatchingFunction) {
MOZ_ASSERT(NS_IsMainThread());
nsIDocument* doc = aPresContext->Document();
nsIURI* docURI = doc->GetDocumentURI();
nsAutoCString docURISpec;
if (docURI) {
// If GetSpec fails (due to OOM) just skip these URI-specific CSS rules.
nsresult rv = docURI->GetSpec(docURISpec);
NS_ENSURE_SUCCESS(rv, false);
}
return CSSMozDocumentRule::Match(doc, docURI, docURISpec, *aPattern,
aMatchingFunction);
}
void Gecko_SetJemallocThreadLocalArena(bool enabled) {
#if defined(MOZ_MEMORY)
jemalloc_thread_local_arena(enabled);
#endif
}
#include "nsStyleStructList.h"
#undef STYLE_STRUCT
bool Gecko_ErrorReportingEnabled(const StyleSheet* aSheet,
const Loader* aLoader) {
return ErrorReporter::ShouldReportErrors(aSheet, aLoader);
}
void Gecko_ReportUnexpectedCSSError(const StyleSheet* aSheet,
const Loader* aLoader, nsIURI* aURI,
const char* message, const char* param,
uint32_t paramLen, const char* prefix,
const char* prefixParam,
uint32_t prefixParamLen, const char* suffix,
const char* source, uint32_t sourceLen,
uint32_t lineNumber, uint32_t colNumber) {
MOZ_RELEASE_ASSERT(NS_IsMainThread());
ErrorReporter reporter(aSheet, aLoader, aURI);
if (prefix) {
if (prefixParam) {
nsDependentCSubstring paramValue(prefixParam, prefixParamLen);
nsAutoString wideParam = NS_ConvertUTF8toUTF16(paramValue);
reporter.ReportUnexpectedUnescaped(prefix, wideParam);
} else {
reporter.ReportUnexpected(prefix);
}
}
if (param) {
nsDependentCSubstring paramValue(param, paramLen);
nsAutoString wideParam = NS_ConvertUTF8toUTF16(paramValue);
reporter.ReportUnexpectedUnescaped(message, wideParam);
} else {
reporter.ReportUnexpected(message);
}
if (suffix) {
reporter.ReportUnexpected(suffix);
}
nsDependentCSubstring sourceValue(source, sourceLen);
reporter.OutputError(lineNumber, colNumber, sourceValue);
}
void Gecko_AddBufferToCrashReport(const void* addr, size_t len) {
MOZ_ASSERT(NS_IsMainThread());
nsCOMPtr<nsICrashReporter> cr =
do_GetService("@mozilla.org/toolkit/crash-reporter;1");
NS_ENSURE_TRUE_VOID(cr);
cr->RegisterAppMemory((uint64_t)addr, len);
}
void Gecko_AnnotateCrashReport(const char* key_str, const char* value_str) {
MOZ_ASSERT(NS_IsMainThread());
nsDependentCString key(key_str);
nsDependentCString value(value_str);
nsCOMPtr<nsICrashReporter> cr =
do_GetService("@mozilla.org/toolkit/crash-reporter;1");
NS_ENSURE_TRUE_VOID(cr);
cr->AnnotateCrashReport(key, value);
}
void Gecko_ContentList_AppendAll(nsSimpleContentList* aList,
const Element** aElements, size_t aLength) {
MOZ_ASSERT(NS_IsMainThread());
MOZ_ASSERT(aElements);
MOZ_ASSERT(aLength);
MOZ_ASSERT(aList);
aList->SetCapacity(aLength);
for (size_t i = 0; i < aLength; ++i) {
aList->AppendElement(const_cast<Element*>(aElements[i]));
}
}
const nsTArray<Element*>* Gecko_Document_GetElementsWithId(
const nsIDocument* aDoc, nsAtom* aId) {
MOZ_ASSERT(aDoc);
MOZ_ASSERT(aId);
return aDoc->GetAllElementsForId(nsDependentAtomString(aId));
}
const nsTArray<Element*>* Gecko_ShadowRoot_GetElementsWithId(
const ShadowRoot* aShadowRoot, nsAtom* aId) {
MOZ_ASSERT(aShadowRoot);
MOZ_ASSERT(aId);
return aShadowRoot->GetAllElementsForId(nsDependentAtomString(aId));
}
bool Gecko_GetBoolPrefValue(const char* aPrefName) {
MOZ_ASSERT(NS_IsMainThread());
return Preferences::GetBool(aPrefName);
}
bool Gecko_IsInServoTraversal() { return ServoStyleSet::IsInServoTraversal(); }
bool Gecko_IsMainThread() { return NS_IsMainThread(); }
const nsAttrValue* Gecko_GetSVGAnimatedClass(RawGeckoElementBorrowed aElement) {
MOZ_ASSERT(aElement->IsSVGElement());
return static_cast<const nsSVGElement*>(aElement)->GetAnimatedClassName();
}
bool Gecko_AssertClassAttrValueIsSane(const nsAttrValue* aValue) {
MOZ_ASSERT(aValue->Type() == nsAttrValue::eAtom ||
aValue->Type() == nsAttrValue::eString ||
aValue->Type() == nsAttrValue::eAtomArray);
MOZ_ASSERT_IF(
aValue->Type() == nsAttrValue::eString,
nsContentUtils::TrimWhitespace<nsContentUtils::IsHTMLWhitespace>(
aValue->GetStringValue())
.IsEmpty());
return true;
}
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