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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 MOZILLA_SVGORIENTSMILTYPE_H_
#define MOZILLA_SVGORIENTSMILTYPE_H_
#include "mozilla/Attributes.h"
#include "nsISMILType.h"
class nsSMILValue;
/**
* This nsISMILType class is a special case for the 'orient' attribute on SVG's
* 'marker' element.
*
* orient = "auto | auto-start-reverse | <angle>"
*
* Unusually, this attribute doesn't have just a single corresponding DOM
* property, but rather is split into two properties: 'orientType' (of type
* SVGAnimatedEnumeration) and 'orientAngle' (of type SVGAnimatedAngle). If
* 'orientType.animVal' is SVG_MARKER_ORIENT_ANGLE, then
* 'orientAngle.animVal' contains the angle that is being used. The lacuna
* value is 0.
*
* The SVG 2 specification does not define a
* SVG_MARKER_ORIENT_AUTO_START_REVERSE constant value for orientType to use;
* instead, if the attribute is set to "auto-start-reverse",
* SVG_MARKER_ORIENT_UNKNOWN is used. Internally, however, we do use a
* constant with this name.
*/
namespace mozilla {
class SVGOrientSMILType : public nsISMILType
{
public:
// Singleton for nsSMILValue objects to hold onto.
static SVGOrientSMILType sSingleton;
protected:
// nsISMILType Methods
// -------------------
virtual void Init(nsSMILValue& aValue) const override;
virtual void Destroy(nsSMILValue&) const override;
virtual nsresult Assign(nsSMILValue& aDest, const nsSMILValue& aSrc) const override;
virtual bool IsEqual(const nsSMILValue& aLeft,
const nsSMILValue& aRight) const override;
virtual nsresult Add(nsSMILValue& aDest, const nsSMILValue& aValueToAdd,
uint32_t aCount) const override;
virtual nsresult ComputeDistance(const nsSMILValue& aFrom,
const nsSMILValue& aTo,
double& aDistance) const override;
virtual nsresult Interpolate(const nsSMILValue& aStartVal,
const nsSMILValue& aEndVal,
double aUnitDistance,
nsSMILValue& aResult) const override;
private:
// Private constructor: prevent instances beyond my singleton.
constexpr SVGOrientSMILType() {}
};
} // namespace mozilla
#endif // MOZILLA_SVGORIENTSMILTYPE_H_
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