зеркало из https://github.com/mozilla/gecko-dev.git
126 строки
3.9 KiB
C++
126 строки
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 MOZILLA_CONTENT_SVGPRESERVEASPECTRATIO_H_
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#define MOZILLA_CONTENT_SVGPRESERVEASPECTRATIO_H_
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#include "mozilla/dom/SVGPreserveAspectRatioBinding.h"
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#include "mozilla/HashFunctions.h" // for HashGeneric
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#include "nsWrapperCache.h"
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#include "nsCycleCollectionParticipant.h"
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#include "mozilla/ErrorResult.h"
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#include "nsSVGElement.h"
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namespace mozilla {
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// These constants represent the range of valid enum values for the <align>
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// parameter. They exclude the sentinel _UNKNOWN value.
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const uint16_t SVG_ALIGN_MIN_VALID =
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dom::SVGPreserveAspectRatioBinding::SVG_PRESERVEASPECTRATIO_NONE;
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const uint16_t SVG_ALIGN_MAX_VALID =
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dom::SVGPreserveAspectRatioBinding::SVG_PRESERVEASPECTRATIO_XMAXYMAX;
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// These constants represent the range of valid enum values for the
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// <meetOrSlice> parameter. They exclude the sentinel _UNKNOWN value.
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const uint16_t SVG_MEETORSLICE_MIN_VALID =
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dom::SVGPreserveAspectRatioBinding::SVG_MEETORSLICE_MEET;
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const uint16_t SVG_MEETORSLICE_MAX_VALID =
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dom::SVGPreserveAspectRatioBinding::SVG_MEETORSLICE_SLICE;
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class SVGAnimatedPreserveAspectRatio;
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class SVGPreserveAspectRatio final
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{
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friend class SVGAnimatedPreserveAspectRatio;
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public:
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explicit SVGPreserveAspectRatio()
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: mAlign(dom::SVGPreserveAspectRatioBinding::SVG_PRESERVEASPECTRATIO_UNKNOWN)
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, mMeetOrSlice(dom::SVGPreserveAspectRatioBinding::SVG_MEETORSLICE_UNKNOWN)
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{}
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SVGPreserveAspectRatio(uint16_t aAlign, uint16_t aMeetOrSlice)
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: mAlign(aAlign)
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, mMeetOrSlice(aMeetOrSlice)
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{}
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static nsresult FromString(const nsAString& aString,
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SVGPreserveAspectRatio* aValue);
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void ToString(nsAString& aValueAsString) const;
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bool operator==(const SVGPreserveAspectRatio& aOther) const;
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nsresult SetAlign(uint16_t aAlign) {
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if (aAlign < SVG_ALIGN_MIN_VALID || aAlign > SVG_ALIGN_MAX_VALID)
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return NS_ERROR_FAILURE;
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mAlign = static_cast<uint8_t>(aAlign);
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return NS_OK;
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}
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uint16_t GetAlign() const {
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return mAlign;
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}
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nsresult SetMeetOrSlice(uint16_t aMeetOrSlice) {
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if (aMeetOrSlice < SVG_MEETORSLICE_MIN_VALID ||
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aMeetOrSlice > SVG_MEETORSLICE_MAX_VALID)
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return NS_ERROR_FAILURE;
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mMeetOrSlice = static_cast<uint8_t>(aMeetOrSlice);
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return NS_OK;
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}
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uint16_t GetMeetOrSlice() const {
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return mMeetOrSlice;
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}
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PLDHashNumber Hash() const {
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return HashGeneric(mAlign, mMeetOrSlice);
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}
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private:
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// We can't use enum types here because some compilers fail to pack them.
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uint8_t mAlign;
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uint8_t mMeetOrSlice;
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};
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namespace dom {
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class DOMSVGPreserveAspectRatio final : public nsISupports,
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public nsWrapperCache
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{
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public:
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NS_DECL_CYCLE_COLLECTING_ISUPPORTS
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NS_DECL_CYCLE_COLLECTION_SCRIPT_HOLDER_CLASS(DOMSVGPreserveAspectRatio)
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DOMSVGPreserveAspectRatio(SVGAnimatedPreserveAspectRatio* aVal,
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nsSVGElement *aSVGElement,
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bool aIsBaseValue)
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: mVal(aVal), mSVGElement(aSVGElement), mIsBaseValue(aIsBaseValue)
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{
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}
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// WebIDL
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nsSVGElement* GetParentObject() const { return mSVGElement; }
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virtual JSObject* WrapObject(JSContext* aCx, JS::Handle<JSObject*> aGivenProto) override;
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uint16_t Align();
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void SetAlign(uint16_t aAlign, ErrorResult& rv);
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uint16_t MeetOrSlice();
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void SetMeetOrSlice(uint16_t aMeetOrSlice, ErrorResult& rv);
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protected:
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~DOMSVGPreserveAspectRatio();
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SVGAnimatedPreserveAspectRatio* mVal; // kept alive because it belongs to mSVGElement
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RefPtr<nsSVGElement> mSVGElement;
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const bool mIsBaseValue;
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};
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} //namespace dom
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} //namespace mozilla
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#endif // MOZILLA_CONTENT_SVGPRESERVEASPECTRATIO_H_
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