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74 lines
2.5 KiB
C++
74 lines
2.5 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=8 sts=2 et sw=2 tw=80: */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#ifndef mozilla_ServoStyleContext_h
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#define mozilla_ServoStyleContext_h
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#include "nsStyleContext.h"
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namespace mozilla {
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class ServoStyleContext final : public nsStyleContext {
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public:
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static already_AddRefed<ServoStyleContext>
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Create(nsStyleContext* aParentContext,
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nsPresContext* aPresContext,
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nsIAtom* aPseudoTag,
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mozilla::CSSPseudoElementType aPseudoType,
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already_AddRefed<ServoComputedValues> aComputedValues);
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ServoStyleContext(nsStyleContext* aParent,
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nsPresContext* aPresContext,
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nsIAtom* aPseudoTag,
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CSSPseudoElementType aPseudoType,
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already_AddRefed<ServoComputedValues> aComputedValues);
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nsPresContext* PresContext() const {
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return mPresContext;
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}
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ServoComputedValues* ComputedValues() const {
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return mSource;
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}
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~ServoStyleContext() {
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Destructor();
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}
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/**
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* Makes this context match |aOther| in terms of which style structs have
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* been resolved.
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*/
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void ResolveSameStructsAs(nsPresContext* aPresContext, ServoStyleContext* aOther) {
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// NB: This function is only called on newly-minted style contexts, but
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// those may already have resolved style structs given the SetStyleBits call
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// in FinishConstruction. So we carefully xor out the bits that are new so
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// that we don't call FinishStyle twice.
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uint64_t ourBits = mBits & NS_STYLE_INHERIT_MASK;
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uint64_t otherBits = aOther->mBits & NS_STYLE_INHERIT_MASK;
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MOZ_ASSERT((otherBits | ourBits) == otherBits, "otherBits should be a superset");
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uint64_t newBits = (ourBits ^ otherBits) & NS_STYLE_INHERIT_MASK;
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#define STYLE_STRUCT(name_, checkdata_cb) \
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if (nsStyle##name_::kHasFinishStyle && newBits & NS_STYLE_INHERIT_BIT(name_)) { \
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const nsStyle##name_* data = Servo_GetStyle##name_(ComputedValues()); \
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const_cast<nsStyle##name_*>(data)->FinishStyle(aPresContext); \
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}
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#include "nsStyleStructList.h"
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#undef STYLE_STRUCT
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mBits |= newBits;
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}
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private:
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nsPresContext* mPresContext;
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RefPtr<ServoComputedValues> mSource;
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};
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}
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#endif // mozilla_ServoStyleContext_h
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