зеркало из https://github.com/mozilla/gecko-dev.git
117 строки
4.0 KiB
C++
117 строки
4.0 KiB
C++
/* -*- 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_SVGANIMATEDLENGTHLIST_H__
|
|
#define MOZILLA_SVGANIMATEDLENGTHLIST_H__
|
|
|
|
#include "mozilla/Attributes.h"
|
|
#include "mozilla/UniquePtr.h"
|
|
#include "nsAutoPtr.h"
|
|
#include "nsISMILAttr.h"
|
|
#include "SVGLengthList.h"
|
|
|
|
class nsSMILValue;
|
|
class nsSVGElement;
|
|
|
|
namespace mozilla {
|
|
|
|
namespace dom {
|
|
class SVGAnimationElement;
|
|
} // namespace dom
|
|
|
|
/**
|
|
* Class SVGAnimatedLengthList
|
|
*
|
|
* This class is very different to the SVG DOM interface of the same name found
|
|
* in the SVG specification. This is a lightweight internal class - see
|
|
* DOMSVGAnimatedLengthList for the heavier DOM class that wraps instances of
|
|
* this class and implements the SVG specification's SVGAnimatedLengthList DOM
|
|
* interface.
|
|
*
|
|
* Except where noted otherwise, this class' methods take care of keeping the
|
|
* appropriate DOM wrappers in sync (see the comment in
|
|
* DOMSVGAnimatedLengthList::InternalBaseValListWillChangeTo) so that their
|
|
* consumers don't need to concern themselves with that.
|
|
*/
|
|
class SVGAnimatedLengthList {
|
|
// friends so that they can get write access to mBaseVal
|
|
friend class DOMSVGLength;
|
|
friend class DOMSVGLengthList;
|
|
|
|
public:
|
|
SVGAnimatedLengthList() {}
|
|
|
|
/**
|
|
* Because it's so important that mBaseVal and its DOMSVGLengthList wrapper
|
|
* (if any) be kept in sync (see the comment in
|
|
* DOMSVGAnimatedLengthList::InternalBaseValListWillChangeTo), this method
|
|
* returns a const reference. Only our friend classes may get mutable
|
|
* references to mBaseVal.
|
|
*/
|
|
const SVGLengthList& GetBaseValue() const { return mBaseVal; }
|
|
|
|
nsresult SetBaseValueString(const nsAString& aValue);
|
|
|
|
void ClearBaseValue(uint32_t aAttrEnum);
|
|
|
|
const SVGLengthList& GetAnimValue() const {
|
|
return mAnimVal ? *mAnimVal : mBaseVal;
|
|
}
|
|
|
|
nsresult SetAnimValue(const SVGLengthList& aValue, nsSVGElement* aElement,
|
|
uint32_t aAttrEnum);
|
|
|
|
void ClearAnimValue(nsSVGElement* aElement, uint32_t aAttrEnum);
|
|
|
|
bool IsAnimating() const { return !!mAnimVal; }
|
|
|
|
UniquePtr<nsISMILAttr> ToSMILAttr(nsSVGElement* aSVGElement,
|
|
uint8_t aAttrEnum, uint8_t aAxis,
|
|
bool aCanZeroPadList);
|
|
|
|
private:
|
|
// mAnimVal is a pointer to allow us to determine if we're being animated or
|
|
// not. Making it a non-pointer member and using mAnimVal.IsEmpty() to check
|
|
// if we're animating is not an option, since that would break animation *to*
|
|
// the empty string (<set to="">).
|
|
|
|
SVGLengthList mBaseVal;
|
|
nsAutoPtr<SVGLengthList> mAnimVal;
|
|
|
|
struct SMILAnimatedLengthList : public nsISMILAttr {
|
|
public:
|
|
SMILAnimatedLengthList(SVGAnimatedLengthList* aVal,
|
|
nsSVGElement* aSVGElement, uint8_t aAttrEnum,
|
|
uint8_t aAxis, bool aCanZeroPadList)
|
|
: mVal(aVal),
|
|
mElement(aSVGElement),
|
|
mAttrEnum(aAttrEnum),
|
|
mAxis(aAxis),
|
|
mCanZeroPadList(aCanZeroPadList) {}
|
|
|
|
// These will stay alive because a nsISMILAttr only lives as long
|
|
// as the Compositing step, and DOM elements don't get a chance to
|
|
// die during that.
|
|
SVGAnimatedLengthList* mVal;
|
|
nsSVGElement* mElement;
|
|
uint8_t mAttrEnum;
|
|
uint8_t mAxis;
|
|
bool mCanZeroPadList; // See SVGLengthListAndInfo::CanZeroPadList
|
|
|
|
// nsISMILAttr methods
|
|
virtual nsresult ValueFromString(
|
|
const nsAString& aStr, const dom::SVGAnimationElement* aSrcElement,
|
|
nsSMILValue& aValue, bool& aPreventCachingOfSandwich) const override;
|
|
virtual nsSMILValue GetBaseValue() const override;
|
|
virtual void ClearAnimValue() override;
|
|
virtual nsresult SetAnimValue(const nsSMILValue& aValue) override;
|
|
};
|
|
};
|
|
|
|
} // namespace mozilla
|
|
|
|
#endif // MOZILLA_SVGANIMATEDLENGTHLIST_H__
|