зеркало из https://github.com/mozilla/gecko-dev.git
101 строка
3.2 KiB
C++
101 строка
3.2 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 DOM_SVG_SVGANIMATEDSTRING_H_
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#define DOM_SVG_SVGANIMATEDSTRING_H_
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#include "nsError.h"
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#include "mozilla/Attributes.h"
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#include "mozilla/SMILAttr.h"
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#include "mozilla/SVGAnimatedClassOrString.h"
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#include "mozilla/dom/SVGElement.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 final : public SVGAnimatedClassOrString {
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public:
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using SVGElement = dom::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) override;
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void GetBaseValue(nsAString& aValue,
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const SVGElement* aSVGElement) const override {
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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,
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const SVGElement* aSVGElement) const override;
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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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UniquePtr<SMILAttr> ToSMILAttr(SVGElement* aSVGElement);
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SVGAnimatedString() = default;
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SVGAnimatedString& operator=(const SVGAnimatedString& aOther) {
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mAttrEnum = aOther.mAttrEnum;
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mIsBaseSet = aOther.mIsBaseSet;
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if (aOther.mAnimVal) {
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mAnimVal = MakeUnique<nsString>(*aOther.mAnimVal);
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}
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return *this;
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}
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SVGAnimatedString(const SVGAnimatedString& aOther) : SVGAnimatedString() {
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*this = aOther;
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}
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private:
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// FIXME: Should probably use void string rather than UniquePtr<nsString>.
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UniquePtr<nsString> mAnimVal;
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uint8_t mAttrEnum = 0; // element specified tracking for attribute
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bool mIsBaseSet = false;
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public:
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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, const dom::SVGAnimationElement* aSrcElement,
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SMILValue& aValue, 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 // DOM_SVG_SVGANIMATEDSTRING_H_
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