зеркало из https://github.com/mozilla/gecko-dev.git
126 строки
4.6 KiB
C++
126 строки
4.6 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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/*
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* Generic representation of a container of specified CSS values, which
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* could potentially be Servo- or Gecko- format. Used to make attribute mapping
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* code generic over style backends.
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*/
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#ifndef mozilla_GenericSpecifiedValues_h
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#define mozilla_GenericSpecifiedValues_h
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#include "mozilla/ServoUtils.h"
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#include "nsCSSProps.h"
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#include "nsCSSValue.h"
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#include "nsPresContext.h"
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struct nsRuleData;
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namespace mozilla {
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class ServoSpecifiedValues;
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// This provides a common interface for attribute mappers (MapAttributesIntoRule)
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// to use regardless of the style backend. If the style backend is Gecko,
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// this will contain an nsRuleData. If it is Servo, it will be a PropertyDeclarationBlock.
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class GenericSpecifiedValues
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{
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protected:
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explicit GenericSpecifiedValues(StyleBackendType aType,
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nsPresContext* aPresContext,
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uint32_t aSIDs)
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: mType(aType)
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, mPresContext(aPresContext)
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, mSIDs(aSIDs)
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{}
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public:
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MOZ_DECL_STYLO_METHODS(nsRuleData, ServoSpecifiedValues)
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// Check if we already contain a certain longhand
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inline bool PropertyIsSet(nsCSSPropertyID aId);
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// Check if we are able to hold longhands from a given
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// style struct. Pass the result of NS_STYLE_INHERIT_BIT to this
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// function. Can accept multiple inherit bits or'd together.
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inline bool ShouldComputeStyleStruct(uint64_t aInheritBits)
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{
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return aInheritBits & mSIDs;
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}
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inline nsPresContext* PresContext() { return mPresContext; }
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// Set a property to an identifier (string)
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inline void SetIdentStringValue(nsCSSPropertyID aId, const nsString& aValue);
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inline void SetIdentStringValueIfUnset(nsCSSPropertyID aId,
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const nsString& aValue);
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inline void SetIdentAtomValue(nsCSSPropertyID aId, nsIAtom* aValue);
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inline void SetIdentAtomValueIfUnset(nsCSSPropertyID aId, nsIAtom* aValue);
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// Set a property to a keyword (usually NS_STYLE_* or StyleFoo::*)
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inline void SetKeywordValue(nsCSSPropertyID aId, int32_t aValue);
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inline void SetKeywordValueIfUnset(nsCSSPropertyID aId, int32_t aValue);
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template<typename T,
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typename = typename std::enable_if<std::is_enum<T>::value>::type>
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void SetKeywordValue(nsCSSPropertyID aId, T aValue)
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{
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static_assert(mozilla::EnumTypeFitsWithin<T, int32_t>::value,
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"aValue must be an enum that fits within 32 bits");
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SetKeywordValue(aId, static_cast<int32_t>(aValue));
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}
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template<typename T,
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typename = typename std::enable_if<std::is_enum<T>::value>::type>
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void SetKeywordValueIfUnset(nsCSSPropertyID aId, T aValue)
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{
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static_assert(mozilla::EnumTypeFitsWithin<T, int32_t>::value,
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"aValue must be an enum that fits within 32 bits");
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SetKeywordValueIfUnset(aId, static_cast<int32_t>(aValue));
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}
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// Set a property to an integer value
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inline void SetIntValue(nsCSSPropertyID aId, int32_t aValue);
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// Set a property to a pixel value
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inline void SetPixelValue(nsCSSPropertyID aId, float aValue);
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inline void SetPixelValueIfUnset(nsCSSPropertyID aId, float aValue);
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inline void SetLengthValue(nsCSSPropertyID aId, nsCSSValue aValue);
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// Set a property to a number value
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inline void SetNumberValue(nsCSSPropertyID aId, float aValue);
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// Set a property to a percent value
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inline void SetPercentValue(nsCSSPropertyID aId, float aValue);
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inline void SetPercentValueIfUnset(nsCSSPropertyID aId, float aValue);
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// Set a property to `auto`
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inline void SetAutoValue(nsCSSPropertyID aId);
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inline void SetAutoValueIfUnset(nsCSSPropertyID aId);
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// Set a property to `currentcolor`
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inline void SetCurrentColor(nsCSSPropertyID aId);
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inline void SetCurrentColorIfUnset(nsCSSPropertyID aId);
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// Set a property to an RGBA nscolor value
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inline void SetColorValue(nsCSSPropertyID aId, nscolor aValue);
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inline void SetColorValueIfUnset(nsCSSPropertyID aId, nscolor aValue);
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// Set font-family to a string
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inline void SetFontFamily(const nsString& aValue);
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// Add a quirks-mode override to the decoration color of elements nested in <a>
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inline void SetTextDecorationColorOverride();
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inline void SetBackgroundImage(nsAttrValue& value);
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const mozilla::StyleBackendType mType;
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nsPresContext* const mPresContext;
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const uint32_t mSIDs;
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};
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} // namespace mozilla
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#endif // mozilla_GenericSpecifiedValues_h
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