151 lines
4.4 KiB
C++
151 lines
4.4 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/HashFunctions.h" // for HashGeneric
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#include "nsWrapperCache.h"
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#include "nsAutoPtr.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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// Alignment Types
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enum SVGAlign : uint8_t {
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SVG_PRESERVEASPECTRATIO_UNKNOWN = 0,
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SVG_PRESERVEASPECTRATIO_NONE = 1,
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SVG_PRESERVEASPECTRATIO_XMINYMIN = 2,
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SVG_PRESERVEASPECTRATIO_XMIDYMIN = 3,
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SVG_PRESERVEASPECTRATIO_XMAXYMIN = 4,
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SVG_PRESERVEASPECTRATIO_XMINYMID = 5,
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SVG_PRESERVEASPECTRATIO_XMIDYMID = 6,
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SVG_PRESERVEASPECTRATIO_XMAXYMID = 7,
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SVG_PRESERVEASPECTRATIO_XMINYMAX = 8,
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SVG_PRESERVEASPECTRATIO_XMIDYMAX = 9,
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SVG_PRESERVEASPECTRATIO_XMAXYMAX = 10
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};
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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 = SVG_PRESERVEASPECTRATIO_NONE;
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const uint16_t SVG_ALIGN_MAX_VALID = SVG_PRESERVEASPECTRATIO_XMAXYMAX;
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// Meet-or-slice Types
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enum SVGMeetOrSlice : uint8_t {
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SVG_MEETORSLICE_UNKNOWN = 0,
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SVG_MEETORSLICE_MEET = 1,
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SVG_MEETORSLICE_SLICE = 2
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};
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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 = SVG_MEETORSLICE_MEET;
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const uint16_t SVG_MEETORSLICE_MAX_VALID = 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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SVGPreserveAspectRatio(SVGAlign aAlign, SVGMeetOrSlice aMeetOrSlice,
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bool aDefer = false)
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: mAlign(aAlign)
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, mMeetOrSlice(aMeetOrSlice)
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, mDefer(aDefer)
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{}
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bool operator==(const SVGPreserveAspectRatio& aOther) const;
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explicit SVGPreserveAspectRatio()
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: mAlign(SVG_PRESERVEASPECTRATIO_UNKNOWN)
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, mMeetOrSlice(SVG_MEETORSLICE_UNKNOWN)
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, mDefer(false)
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{}
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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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SVGAlign GetAlign() const {
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return static_cast<SVGAlign>(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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SVGMeetOrSlice GetMeetOrSlice() const {
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return static_cast<SVGMeetOrSlice>(mMeetOrSlice);
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}
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void SetDefer(bool aDefer) {
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mDefer = aDefer;
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}
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bool GetDefer() const {
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return mDefer;
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}
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uint32_t Hash() const {
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return HashGeneric(mAlign, mMeetOrSlice, mDefer);
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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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bool mDefer;
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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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