gecko-dev/layout/style/ServoFontFaceRule.h

112 строки
3.2 KiB
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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/. */
#ifndef mozilla_ServoFontFaceRule_h
#define mozilla_ServoFontFaceRule_h
#include "mozilla/ServoBindingTypes.h"
#include "mozilla/css/Rule.h"
#include "nsICSSDeclaration.h"
namespace mozilla {
// A ServoFontFaceRuleDecl is always embeded in a ServoFontFaceRule.
class ServoFontFaceRule;
class ServoFontFaceRuleDecl final : public nsICSSDeclaration
{
public:
NS_DECL_ISUPPORTS_INHERITED
NS_DECL_NSIDOMCSSSTYLEDECLARATION_HELPER
already_AddRefed<dom::CSSValue>
GetPropertyCSSValue(const nsAString& aProp, ErrorResult& aRv) final;
using nsICSSDeclaration::GetPropertyCSSValue;
nsINode* GetParentObject() final;
void IndexedGetter(uint32_t aIndex, bool& aFound, nsAString& aPropName) final;
void GetPropertyValue(nsCSSFontDesc aFontDescID, nsAString& aResult) const;
JSObject* WrapObject(JSContext* aCx, JS::Handle<JSObject*> aGivenProto) final;
protected:
// For accessing the constructor.
friend class ServoFontFaceRule;
explicit ServoFontFaceRuleDecl(already_AddRefed<RawServoFontFaceRule> aDecl)
: mRawRule(Move(aDecl)) {}
~ServoFontFaceRuleDecl() = default;
inline ServoFontFaceRule* ContainingRule();
inline const ServoFontFaceRule* ContainingRule() const;
RefPtr<RawServoFontFaceRule> mRawRule;
private:
void* operator new(size_t size) CPP_THROW_NEW = delete;
};
class ServoFontFaceRule final : public css::Rule
{
public:
ServoFontFaceRule(already_AddRefed<RawServoFontFaceRule> aRawRule,
uint32_t aLine, uint32_t aColumn)
: css::Rule(aLine, aColumn)
, mDecl(Move(aRawRule))
{}
ServoFontFaceRule(const ServoFontFaceRule&) = delete;
NS_DECL_ISUPPORTS_INHERITED
NS_DECL_CYCLE_COLLECTION_SCRIPT_HOLDER_CLASS_INHERITED(
ServoFontFaceRule, css::Rule)
bool IsCCLeaf() const final;
RawServoFontFaceRule* Raw() const { return mDecl.mRawRule; }
// WebIDL interface
uint16_t Type() const final;
void GetCssText(nsAString& aCssText) const final;
nsICSSDeclaration* Style();
// Methods of mozilla::css::Rule
size_t SizeOfIncludingThis(mozilla::MallocSizeOf aMallocSizeOf)
const final;
JSObject* WrapObject(JSContext* aCx, JS::Handle<JSObject*> aGivenProto) final;
#ifdef DEBUG
void List(FILE* out = stdout, int32_t aIndent = 0) const final;
#endif
private:
virtual ~ServoFontFaceRule() = default;
// For computing the offset of mDecl.
friend class ServoFontFaceRuleDecl;
ServoFontFaceRuleDecl mDecl;
};
inline ServoFontFaceRule*
ServoFontFaceRuleDecl::ContainingRule()
{
return reinterpret_cast<ServoFontFaceRule*>
(reinterpret_cast<char*>(this) - offsetof(ServoFontFaceRule, mDecl));
}
inline const ServoFontFaceRule*
ServoFontFaceRuleDecl::ContainingRule() const
{
return reinterpret_cast<const ServoFontFaceRule*>
(reinterpret_cast<const char*>(this) - offsetof(ServoFontFaceRule, mDecl));
}
} // namespace mozilla
#endif // mozilla_ServoFontFaceRule_h