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/* -*- 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 DOM_SVG_SVGPRESERVEASPECTRATIO_H_
#define DOM_SVG_SVGPRESERVEASPECTRATIO_H_
#include "mozilla/dom/SVGPreserveAspectRatioBinding.h"
#include "mozilla/HashFunctions.h" // for HashGeneric
#include "nsWrapperCache.h"
#include "nsCycleCollectionParticipant.h"
#include "mozilla/dom/SVGElement.h"
namespace mozilla {
class ErrorResult;
// 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 =
dom::SVGPreserveAspectRatio_Binding::SVG_PRESERVEASPECTRATIO_NONE;
const uint16_t SVG_ALIGN_MAX_VALID =
dom::SVGPreserveAspectRatio_Binding::SVG_PRESERVEASPECTRATIO_XMAXYMAX;
// 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 =
dom::SVGPreserveAspectRatio_Binding::SVG_MEETORSLICE_MEET;
const uint16_t SVG_MEETORSLICE_MAX_VALID =
dom::SVGPreserveAspectRatio_Binding::SVG_MEETORSLICE_SLICE;
class SVGAnimatedPreserveAspectRatio;
class SVGPreserveAspectRatio final {
friend class SVGAnimatedPreserveAspectRatio;
public:
explicit SVGPreserveAspectRatio()
: mAlign(dom::SVGPreserveAspectRatio_Binding::
SVG_PRESERVEASPECTRATIO_UNKNOWN),
mMeetOrSlice(
dom::SVGPreserveAspectRatio_Binding::SVG_MEETORSLICE_UNKNOWN) {}
SVGPreserveAspectRatio(uint8_t aAlign, uint8_t aMeetOrSlice)
: mAlign(aAlign), mMeetOrSlice(aMeetOrSlice) {}
static nsresult FromString(const nsAString& aString,
SVGPreserveAspectRatio* aValue);
void ToString(nsAString& aValueAsString) const;
bool operator==(const SVGPreserveAspectRatio& aOther) const;
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;
}
auto GetAlign() const { return 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;
}
auto GetMeetOrSlice() const { return mMeetOrSlice; }
PLDHashNumber 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 nsWrapperCache {
public:
NS_INLINE_DECL_CYCLE_COLLECTING_NATIVE_REFCOUNTING(DOMSVGPreserveAspectRatio)
NS_DECL_CYCLE_COLLECTION_SCRIPT_HOLDER_NATIVE_CLASS(DOMSVGPreserveAspectRatio)
DOMSVGPreserveAspectRatio(SVGAnimatedPreserveAspectRatio* aVal,
SVGElement* aSVGElement, bool aIsBaseValue)
: mVal(aVal), mSVGElement(aSVGElement), mIsBaseValue(aIsBaseValue) {}
// WebIDL
SVGElement* 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<SVGElement> mSVGElement;
const bool mIsBaseValue;
};
} // namespace dom
} // namespace mozilla
#endif // DOM_SVG_SVGPRESERVEASPECTRATIO_H_
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