зеркало из https://github.com/mozilla/gecko-dev.git
112 строки
3.6 KiB
C++
112 строки
3.6 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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#ifndef __NS_SVGSTRING_H__
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#define __NS_SVGSTRING_H__
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#include "DOMSVGAnimatedString.h"
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#include "nsError.h"
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#include "mozilla/Attributes.h"
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#include "mozilla/UniquePtr.h"
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namespace mozilla {
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class SMILValue;
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namespace dom {
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class SVGElement;
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}
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class SVGAnimatedString {
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public:
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typedef mozilla::dom::SVGElement SVGElement;
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void Init(uint8_t aAttrEnum) {
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mAnimVal = nullptr;
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mAttrEnum = aAttrEnum;
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mIsBaseSet = false;
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}
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void SetBaseValue(const nsAString& aValue, SVGElement* aSVGElement,
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bool aDoSetAttr);
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void GetBaseValue(nsAString& aValue, const SVGElement* aSVGElement) const {
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aSVGElement->GetStringBaseValue(mAttrEnum, aValue);
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}
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void SetAnimValue(const nsAString& aValue, SVGElement* aSVGElement);
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void GetAnimValue(nsAString& aResult, const SVGElement* aSVGElement) const;
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// Returns true if the animated value of this string has been explicitly
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// set (either by animation, or by taking on the base value which has been
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// explicitly set by markup or a DOM call), false otherwise.
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// If this returns false, the animated value is still valid, that is,
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// usable, and represents the default base value of the attribute.
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bool IsExplicitlySet() const { return !!mAnimVal || mIsBaseSet; }
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already_AddRefed<mozilla::dom::DOMSVGAnimatedString> ToDOMAnimatedString(
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SVGElement* aSVGElement);
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mozilla::UniquePtr<SMILAttr> ToSMILAttr(SVGElement* aSVGElement);
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private:
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UniquePtr<nsString> mAnimVal;
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uint8_t mAttrEnum; // element specified tracking for attribute
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bool mIsBaseSet;
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public:
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// DOM wrapper class for the (DOM)SVGAnimatedString interface where the
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// wrapped class is SVGAnimatedString.
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struct DOMAnimatedString final : public mozilla::dom::DOMSVGAnimatedString {
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NS_DECL_CYCLE_COLLECTING_ISUPPORTS
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NS_DECL_CYCLE_COLLECTION_SCRIPT_HOLDER_CLASS(DOMAnimatedString)
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DOMAnimatedString(SVGAnimatedString* aVal, SVGElement* aSVGElement)
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: mozilla::dom::DOMSVGAnimatedString(aSVGElement), mVal(aVal) {}
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SVGAnimatedString* mVal; // kept alive because it belongs to content
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void GetBaseVal(nsAString& aResult) override {
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mVal->GetBaseValue(aResult, mSVGElement);
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}
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void SetBaseVal(const nsAString& aValue) override {
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mVal->SetBaseValue(aValue, mSVGElement, true);
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}
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void GetAnimVal(nsAString& aResult) override {
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mSVGElement->FlushAnimations();
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mVal->GetAnimValue(aResult, mSVGElement);
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}
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private:
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virtual ~DOMAnimatedString();
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};
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struct SMILString : public SMILAttr {
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public:
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SMILString(SVGAnimatedString* aVal, SVGElement* aSVGElement)
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: mVal(aVal), mSVGElement(aSVGElement) {}
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// These will stay alive because a SMILAttr only lives as long
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// as the Compositing step, and DOM elements don't get a chance to
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// die during that.
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SVGAnimatedString* mVal;
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SVGElement* mSVGElement;
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// SMILAttr methods
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virtual nsresult ValueFromString(
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const nsAString& aStr,
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const mozilla::dom::SVGAnimationElement* aSrcElement, SMILValue& aValue,
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bool& aPreventCachingOfSandwich) const override;
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virtual SMILValue GetBaseValue() const override;
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virtual void ClearAnimValue() override;
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virtual nsresult SetAnimValue(const SMILValue& aValue) override;
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};
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};
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} // namespace mozilla
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#endif //__NS_SVGSTRING_H__
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