/* -*- 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 __NS_SVGANGLE_H__

#define __NS_SVGANGLE_H__

#include "nsCOMPtr.h"

#include "nsError.h"

#include "nsISMILAttr.h"

#include "mozilla/Attributes.h"

#include "mozilla/dom/SVGAngleBinding.h"

#include "mozilla/UniquePtr.h"

class nsISupports;

class nsSMILValue;

class nsSVGElement;

namespace mozilla {

namespace dom {

class nsSVGOrientType;

class SVGAngle;

class SVGAnimatedAngle;

class SVGAnimationElement;

} // namespace dom

} // namespace mozilla

class nsSVGAngle

{

  friend class mozilla::dom::SVGAngle;

  friend class mozilla::dom::SVGAnimatedAngle;

public:

  void Init(uint8_t aAttrEnum = 0xff,

            float aValue = 0,

            uint8_t aUnitType =

              mozilla::dom::SVGAngle_Binding::SVG_ANGLETYPE_UNSPECIFIED) {

    mAnimVal = mBaseVal = aValue;

    mAnimValUnit = mBaseValUnit = aUnitType;

    mAttrEnum = aAttrEnum;

    mIsAnimated = false;

  }

  nsresult SetBaseValueString(const nsAString& aValue,

                              nsSVGElement *aSVGElement,

                              bool aDoSetAttr);

  void GetBaseValueString(nsAString& aValue) const;

  void GetAnimValueString(nsAString& aValue) const;

  float GetBaseValue() const

    { return mBaseVal * GetDegreesPerUnit(mBaseValUnit); }

  float GetAnimValue() const

    { return mAnimVal * GetDegreesPerUnit(mAnimValUnit); }

  void SetBaseValue(float aValue, uint8_t aUnit, nsSVGElement *aSVGElement,

                    bool aDoSetAttr);

  void SetAnimValue(float aValue, uint8_t aUnit, nsSVGElement *aSVGElement);

  uint8_t GetBaseValueUnit() const { return mBaseValUnit; }

  uint8_t GetAnimValueUnit() const { return mAnimValUnit; }

  float GetBaseValInSpecifiedUnits() const { return mBaseVal; }

  float GetAnimValInSpecifiedUnits() const { return mAnimVal; }

  static nsresult ToDOMSVGAngle(nsISupports **aResult);

  already_AddRefed<mozilla::dom::SVGAnimatedAngle>

    ToDOMAnimatedAngle(nsSVGElement* aSVGElement);

  mozilla::UniquePtr<nsISMILAttr> ToSMILAttr(nsSVGElement* aSVGElement);

  static bool GetValueFromString(const nsAString& aString,

                                 float& aValue,

                                 uint16_t* aUnitType);

  static float GetDegreesPerUnit(uint8_t aUnit);

private:

  float mAnimVal;

  float mBaseVal;

  uint8_t mAnimValUnit;

  uint8_t mBaseValUnit;

  uint8_t mAttrEnum; // element specified tracking for attribute

  bool mIsAnimated;

  void SetBaseValueInSpecifiedUnits(float aValue, nsSVGElement *aSVGElement);

  nsresult NewValueSpecifiedUnits(uint16_t aUnitType, float aValue,

                                  nsSVGElement *aSVGElement);

  nsresult ConvertToSpecifiedUnits(uint16_t aUnitType, nsSVGElement *aSVGElement);

  already_AddRefed<mozilla::dom::SVGAngle> ToDOMBaseVal(nsSVGElement* aSVGElement);

  already_AddRefed<mozilla::dom::SVGAngle> ToDOMAnimVal(nsSVGElement* aSVGElement);

public:

  // We do not currently implemente a SMILAngle struct because in SVG 1.1 the

  // only *animatable* attribute that takes an <angle> is 'orient', on the

  // 'marker' element, and 'orient' must be special cased since it can also

  // take the value 'auto', making it a more complex type.

  struct SMILOrient final : public nsISMILAttr

  {

  public:

    SMILOrient(mozilla::dom::nsSVGOrientType* aOrientType,

               nsSVGAngle* aAngle,

               nsSVGElement* aSVGElement)

      : mOrientType(aOrientType)

      , mAngle(aAngle)

      , mSVGElement(aSVGElement)

    {}

    // 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.

    mozilla::dom::nsSVGOrientType* mOrientType;

    nsSVGAngle* mAngle;

    nsSVGElement* mSVGElement;

    // nsISMILAttr methods

    virtual nsresult ValueFromString(const nsAString& aStr,

                                     const mozilla::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;

  };

};

#endif //__NS_SVGANGLE_H__