/* -*- 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_CONTENT_SVGPRESERVEASPECTRATIO_H_ #define MOZILLA_CONTENT_SVGPRESERVEASPECTRATIO_H_ #include "mozilla/HashFunctions.h" // for HashGeneric #include "nsWrapperCache.h" #include "nsCycleCollectionParticipant.h" #include "mozilla/ErrorResult.h" #include "nsSVGElement.h" namespace mozilla { // Alignment Types enum SVGAlign : uint8_t { SVG_PRESERVEASPECTRATIO_UNKNOWN = 0, SVG_PRESERVEASPECTRATIO_NONE = 1, SVG_PRESERVEASPECTRATIO_XMINYMIN = 2, SVG_PRESERVEASPECTRATIO_XMIDYMIN = 3, SVG_PRESERVEASPECTRATIO_XMAXYMIN = 4, SVG_PRESERVEASPECTRATIO_XMINYMID = 5, SVG_PRESERVEASPECTRATIO_XMIDYMID = 6, SVG_PRESERVEASPECTRATIO_XMAXYMID = 7, SVG_PRESERVEASPECTRATIO_XMINYMAX = 8, SVG_PRESERVEASPECTRATIO_XMIDYMAX = 9, SVG_PRESERVEASPECTRATIO_XMAXYMAX = 10 }; // These constants represent the range of valid enum values for the <align> // parameter. They exclude the sentinel _UNKNOWN value. const uint16_t SVG_ALIGN_MIN_VALID = SVG_PRESERVEASPECTRATIO_NONE; const uint16_t SVG_ALIGN_MAX_VALID = SVG_PRESERVEASPECTRATIO_XMAXYMAX; // Meet-or-slice Types enum SVGMeetOrSlice : uint8_t { SVG_MEETORSLICE_UNKNOWN = 0, SVG_MEETORSLICE_MEET = 1, SVG_MEETORSLICE_SLICE = 2 }; // These constants represent the range of valid enum values for the // <meetOrSlice> parameter. They exclude the sentinel _UNKNOWN value. const uint16_t SVG_MEETORSLICE_MIN_VALID = SVG_MEETORSLICE_MEET; const uint16_t SVG_MEETORSLICE_MAX_VALID = SVG_MEETORSLICE_SLICE; class SVGAnimatedPreserveAspectRatio; class SVGPreserveAspectRatio final { friend class SVGAnimatedPreserveAspectRatio; public: SVGPreserveAspectRatio(SVGAlign aAlign, SVGMeetOrSlice aMeetOrSlice) : mAlign(aAlign) , mMeetOrSlice(aMeetOrSlice) {} bool operator==(const SVGPreserveAspectRatio& aOther) const; explicit SVGPreserveAspectRatio() : mAlign(SVG_PRESERVEASPECTRATIO_UNKNOWN) , mMeetOrSlice(SVG_MEETORSLICE_UNKNOWN) {} nsresult SetAlign(uint16_t aAlign) { if (aAlign < SVG_ALIGN_MIN_VALID || aAlign > SVG_ALIGN_MAX_VALID) return NS_ERROR_FAILURE; mAlign = static_cast<uint8_t>(aAlign); return NS_OK; } SVGAlign GetAlign() const { return static_cast<SVGAlign>(mAlign); } nsresult SetMeetOrSlice(uint16_t aMeetOrSlice) { if (aMeetOrSlice < SVG_MEETORSLICE_MIN_VALID || aMeetOrSlice > SVG_MEETORSLICE_MAX_VALID) return NS_ERROR_FAILURE; mMeetOrSlice = static_cast<uint8_t>(aMeetOrSlice); return NS_OK; } SVGMeetOrSlice GetMeetOrSlice() const { return static_cast<SVGMeetOrSlice>(mMeetOrSlice); } uint32_t Hash() const { return HashGeneric(mAlign, mMeetOrSlice); } private: // We can't use enum types here because some compilers fail to pack them. uint8_t mAlign; uint8_t mMeetOrSlice; }; namespace dom { class DOMSVGPreserveAspectRatio final : public nsISupports, public nsWrapperCache { public: NS_DECL_CYCLE_COLLECTING_ISUPPORTS NS_DECL_CYCLE_COLLECTION_SCRIPT_HOLDER_CLASS(DOMSVGPreserveAspectRatio) DOMSVGPreserveAspectRatio(SVGAnimatedPreserveAspectRatio* aVal, nsSVGElement *aSVGElement, bool aIsBaseValue) : mVal(aVal), mSVGElement(aSVGElement), mIsBaseValue(aIsBaseValue) { } // WebIDL nsSVGElement* GetParentObject() const { return mSVGElement; } virtual JSObject* WrapObject(JSContext* aCx, JS::Handle<JSObject*> aGivenProto) override; uint16_t Align(); void SetAlign(uint16_t aAlign, ErrorResult& rv); uint16_t MeetOrSlice(); void SetMeetOrSlice(uint16_t aMeetOrSlice, ErrorResult& rv); protected: ~DOMSVGPreserveAspectRatio(); SVGAnimatedPreserveAspectRatio* mVal; // kept alive because it belongs to mSVGElement RefPtr<nsSVGElement> mSVGElement; const bool mIsBaseValue; }; } //namespace dom } //namespace mozilla #endif // MOZILLA_CONTENT_SVGPRESERVEASPECTRATIO_H_