зеркало из https://github.com/mozilla/gecko-dev.git
121 строка
3.9 KiB
C++
121 строка
3.9 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_SVGENUM_H__
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#define __NS_SVGENUM_H__
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#include "DOMSVGAnimatedEnumeration.h"
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#include "nsCycleCollectionParticipant.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/UniquePtr.h"
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#include "mozilla/dom/SVGElement.h"
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class nsAtom;
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namespace mozilla {
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class SMILValue;
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namespace dom {
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class SVGAnimationElement;
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} // namespace dom
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typedef uint8_t SVGEnumValue;
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struct SVGEnumMapping {
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nsStaticAtom* const mKey;
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const SVGEnumValue mVal;
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};
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class SVGAnimatedEnumeration {
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public:
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typedef mozilla::dom::SVGElement SVGElement;
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void Init(uint8_t aAttrEnum, uint16_t aValue) {
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mAnimVal = mBaseVal = uint8_t(aValue);
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mAttrEnum = aAttrEnum;
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mIsAnimated = false;
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mIsBaseSet = false;
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}
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// Returns whether aValue corresponded to a key in our mapping (in which case
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// we actually set the base value) or not (in which case we did not).
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bool SetBaseValueAtom(const nsAtom* aValue, SVGElement* aSVGElement);
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nsAtom* GetBaseValueAtom(SVGElement* aSVGElement);
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void SetBaseValue(uint16_t aValue, SVGElement* aSVGElement, ErrorResult& aRv);
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uint16_t GetBaseValue() const { return mBaseVal; }
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void SetAnimValue(uint16_t aValue, SVGElement* aSVGElement);
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uint16_t GetAnimValue() const { return mAnimVal; }
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bool IsExplicitlySet() const { return mIsAnimated || mIsBaseSet; }
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already_AddRefed<mozilla::dom::DOMSVGAnimatedEnumeration> ToDOMAnimatedEnum(
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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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SVGEnumValue mAnimVal;
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SVGEnumValue mBaseVal;
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uint8_t mAttrEnum; // element specified tracking for attribute
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bool mIsAnimated;
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bool mIsBaseSet;
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const SVGEnumMapping* GetMapping(SVGElement* aSVGElement);
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public:
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// DOM wrapper class for the (DOM)SVGAnimatedEnumeration interface where the
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// wrapped class is SVGAnimatedEnumeration.
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struct DOMAnimatedEnum final
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: public mozilla::dom::DOMSVGAnimatedEnumeration {
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DOMAnimatedEnum(SVGAnimatedEnumeration* aVal, SVGElement* aSVGElement)
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: mozilla::dom::DOMSVGAnimatedEnumeration(aSVGElement), mVal(aVal) {}
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virtual ~DOMAnimatedEnum();
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SVGAnimatedEnumeration* mVal; // kept alive because it belongs to content
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using mozilla::dom::DOMSVGAnimatedEnumeration::SetBaseVal;
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virtual uint16_t BaseVal() override { return mVal->GetBaseValue(); }
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virtual void SetBaseVal(uint16_t aBaseVal, ErrorResult& aRv) override {
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mVal->SetBaseValue(aBaseVal, mSVGElement, aRv);
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}
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virtual uint16_t AnimVal() override {
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// Script may have modified animation parameters or timeline -- DOM
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// getters need to flush any resample requests to reflect these
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// modifications.
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mSVGElement->FlushAnimations();
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return mVal->GetAnimValue();
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}
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};
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struct SMILEnum : public SMILAttr {
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public:
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SMILEnum(SVGAnimatedEnumeration* 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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SVGAnimatedEnumeration* 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_SVGENUM_H__
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