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SVGAnimatedOrient.h (5465B)

      1 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
      2 /* vim: set ts=8 sts=2 et sw=2 tw=80: */
      3 /* This Source Code Form is subject to the terms of the Mozilla Public
      4 * License, v. 2.0. If a copy of the MPL was not distributed with this
      5 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
      6 
      7 #ifndef DOM_SVG_SVGANIMATEDORIENT_H_
      8 #define DOM_SVG_SVGANIMATEDORIENT_H_
      9 
     10 #include "DOMSVGAnimatedEnumeration.h"
     11 #include "SVGAnimatedEnumeration.h"
     12 #include "mozilla/AlreadyAddRefed.h"
     13 #include "mozilla/SMILAttr.h"
     14 #include "mozilla/UniquePtr.h"
     15 #include "mozilla/dom/SVGAngleBinding.h"
     16 #include "mozilla/dom/SVGMarkerElementBinding.h"
     17 #include "nsError.h"
     18 
     19 class nsISupports;
     20 
     21 namespace mozilla {
     22 
     23 class SMILValue;
     24 
     25 namespace dom {
     26 class DOMSVGAngle;
     27 class DOMSVGAnimatedAngle;
     28 class SVGAnimationElement;
     29 class SVGElement;
     30 }  // namespace dom
     31 
     32 class SVGAnimatedOrient {
     33  friend class AutoChangeOrientNotifier;
     34  friend class dom::DOMSVGAngle;
     35  friend class dom::DOMSVGAnimatedAngle;
     36  using SVGElement = dom::SVGElement;
     37 
     38 public:
     39  void Init() {
     40    mAnimVal = mBaseVal = .0f;
     41    mAnimType = mBaseType =
     42        dom::SVGMarkerElement_Binding::SVG_MARKER_ORIENT_ANGLE;
     43    mAnimValUnit = mBaseValUnit =
     44        dom::SVGAngle_Binding::SVG_ANGLETYPE_UNSPECIFIED;
     45    mIsAnimated = false;
     46  }
     47 
     48  nsresult SetBaseValueString(const nsAString& aValue, SVGElement* aSVGElement,
     49                              bool aDoSetAttr);
     50  void GetBaseValueString(nsAString& aValue) const;
     51  void GetBaseAngleValueString(nsAString& aValue) const;
     52  void GetAnimAngleValueString(nsAString& aValue) const;
     53 
     54  float GetBaseValue() const {
     55    return mBaseVal * GetDegreesPerUnit(mBaseValUnit);
     56  }
     57  float GetAnimValue() const {
     58    return mAnimVal * GetDegreesPerUnit(mAnimValUnit);
     59  }
     60  SVGEnumValue GetAnimType() const { return mAnimType; }
     61 
     62  void SetBaseValue(float aValue, uint8_t aUnit, SVGElement* aSVGElement,
     63                    bool aDoSetAttr);
     64  void SetBaseType(SVGEnumValue aValue, SVGElement* aSVGElement,
     65                   ErrorResult& aRv);
     66  void SetAnimValue(float aValue, uint8_t aUnit, SVGElement* aSVGElement);
     67  void SetAnimType(SVGEnumValue aValue, SVGElement* aSVGElement);
     68 
     69  uint8_t GetBaseValueUnit() const { return mBaseValUnit; }
     70  uint8_t GetAnimValueUnit() const { return mAnimValUnit; }
     71  float GetBaseValInSpecifiedUnits() const { return mBaseVal; }
     72  float GetAnimValInSpecifiedUnits() const { return mAnimVal; }
     73 
     74  static nsresult ToDOMSVGAngle(nsISupports** aResult);
     75  already_AddRefed<dom::DOMSVGAnimatedAngle> ToDOMAnimatedAngle(
     76      SVGElement* aSVGElement);
     77  already_AddRefed<dom::DOMSVGAnimatedEnumeration> ToDOMAnimatedEnum(
     78      SVGElement* aSVGElement);
     79  UniquePtr<SMILAttr> ToSMILAttr(SVGElement* aSVGElement);
     80 
     81  static bool IsValidUnitType(uint16_t aUnitType);
     82 
     83  static bool GetValueFromString(const nsAString& aString, float& aValue,
     84                                 uint16_t* aUnitType);
     85  static float GetDegreesPerUnit(uint8_t aUnit);
     86 
     87 private:
     88  float mAnimVal;
     89  float mBaseVal;
     90  uint8_t mAnimType;
     91  uint8_t mBaseType;
     92  uint8_t mAnimValUnit;
     93  uint8_t mBaseValUnit;
     94  bool mIsAnimated;
     95 
     96  void SetBaseValueInSpecifiedUnits(float aValue, SVGElement* aSVGElement);
     97  void NewValueSpecifiedUnits(uint16_t aUnitType, float aValueInSpecifiedUnits,
     98                              SVGElement* aSVGElement);
     99  void ConvertToSpecifiedUnits(uint16_t aUnitType, SVGElement* aSVGElement);
    100  already_AddRefed<dom::DOMSVGAngle> ToDOMBaseVal(SVGElement* aSVGElement);
    101  already_AddRefed<dom::DOMSVGAngle> ToDOMAnimVal(SVGElement* aSVGElement);
    102 
    103 public:
    104  // DOM wrapper class for the (DOM)SVGAnimatedEnumeration interface where the
    105  // wrapped class is SVGAnimatedOrient.
    106  struct DOMAnimatedEnum final : public dom::DOMSVGAnimatedEnumeration {
    107    DOMAnimatedEnum(SVGAnimatedOrient* aVal, SVGElement* aSVGElement)
    108        : DOMSVGAnimatedEnumeration(aSVGElement), mVal(aVal) {}
    109    ~DOMAnimatedEnum();
    110 
    111    SVGAnimatedOrient* mVal;  // kept alive because it belongs to content
    112 
    113    using dom::DOMSVGAnimatedEnumeration::SetBaseVal;
    114    uint16_t BaseVal() override { return mVal->mBaseType; }
    115    void SetBaseVal(uint16_t aBaseVal, ErrorResult& aRv) override {
    116      mVal->SetBaseType(aBaseVal, mSVGElement, aRv);
    117    }
    118    uint16_t AnimVal() override {
    119      // Script may have modified animation parameters or timeline -- DOM
    120      // getters need to flush any resample requests to reflect these
    121      // modifications.
    122      mSVGElement->FlushAnimations();
    123      return mVal->mAnimType;
    124    }
    125  };
    126 
    127  struct SMILOrient final : public SMILAttr {
    128   public:
    129    SMILOrient(SVGAnimatedOrient* aOrient, SVGElement* aSVGElement)
    130        : mOrient(aOrient), mSVGElement(aSVGElement) {}
    131 
    132    // These will stay alive because a SMILAttr only lives as long
    133    // as the Compositing step, and DOM elements don't get a chance to
    134    // die during that.
    135    SVGAnimatedOrient* mOrient;
    136    SVGElement* mSVGElement;
    137 
    138    // SMILAttr methods
    139    nsresult ValueFromString(const nsAString& aStr,
    140                             const dom::SVGAnimationElement* aSrcElement,
    141                             SMILValue& aValue,
    142                             bool& aPreventCachingOfSandwich) const override;
    143    SMILValue GetBaseValue() const override;
    144    void ClearAnimValue() override;
    145    nsresult SetAnimValue(const SMILValue& aValue) override;
    146  };
    147 };
    148 
    149 }  // namespace mozilla
    150 
    151 #endif  // DOM_SVG_SVGANIMATEDORIENT_H_