dom/svg/SVGAnimatedBoolean.h

   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_SVGANIMATEDBOOLEAN_H_
   8 #define DOM_SVG_SVGANIMATEDBOOLEAN_H_
   9
  10 #include "nsError.h"
  11 #include "mozilla/SMILAttr.h"
  12 #include "mozilla/AlreadyAddRefed.h"
  13 #include "mozilla/Attributes.h"
  14 #include "mozilla/UniquePtr.h"
  15
  16 class nsAtom;
  17
  18 namespace mozilla {
  19
  20 class SMILValue;
  21
  22 namespace dom {
  23 class DOMSVGAnimatedBoolean;
  24 class SVGAnimationElement;
  25 class SVGElement;
  26 }  // namespace dom
  27
  28 class SVGAnimatedBoolean {
  29  public:
  30   friend class AutoChangeBooleanNotifier;
  31   using SVGElement = dom::SVGElement;
  32
  33   void Init(uint8_t aAttrEnum = 0xff, bool aValue = false) {
  34     mAnimVal = mBaseVal = aValue;
  35     mAttrEnum = aAttrEnum;
  36     mIsAnimated = false;
  37   }
  38
  39   nsresult SetBaseValueAtom(const nsAtom* aValue, SVGElement* aSVGElement);
  40   nsAtom* GetBaseValueAtom() const;
  41
  42   void SetBaseValue(bool aValue, SVGElement* aSVGElement);
  43   bool GetBaseValue() const { return mBaseVal; }
  44
  45   void SetAnimValue(bool aValue, SVGElement* aSVGElement);
  46   bool GetAnimValue() const { return mAnimVal; }
  47
  48   already_AddRefed<dom::DOMSVGAnimatedBoolean> ToDOMAnimatedBoolean(
  49       SVGElement* aSVGElement);
  50   UniquePtr<SMILAttr> ToSMILAttr(SVGElement* aSVGElement);
  51
  52  private:
  53   bool mAnimVal;
  54   bool mBaseVal;
  55   bool mIsAnimated;
  56   uint8_t mAttrEnum;  // element specified tracking for attribute
  57
  58  public:
  59   struct SMILBool : public SMILAttr {
  60    public:
  61     SMILBool(SVGAnimatedBoolean* aVal, SVGElement* aSVGElement)
  62         : mVal(aVal), mSVGElement(aSVGElement) {}
  63
  64     // These will stay alive because a SMILAttr only lives as long
  65     // as the Compositing step, and DOM elements don't get a chance to
  66     // die during that.
  67     SVGAnimatedBoolean* mVal;
  68     SVGElement* mSVGElement;
  69
  70     // SMILAttr methods
  71     nsresult ValueFromString(const nsAString& aStr,
  72                              const dom::SVGAnimationElement* aSrcElement,
  73                              SMILValue& aValue,
  74                              bool& aPreventCachingOfSandwich) const override;
  75     SMILValue GetBaseValue() const override;
  76     void ClearAnimValue() override;
  77     nsresult SetAnimValue(const SMILValue& aValue) override;
  78   };
  79 };
  80
  81 }  // namespace mozilla
  82
  83 #endif  // DOM_SVG_SVGANIMATEDBOOLEAN_H_