dom/animation/AnimationPropertySegment.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 file,
   5  * You can obtain one at http://mozilla.org/MPL/2.0/. */
   6
   7 #ifndef mozilla_dom_AnimationPropertySegment_h
   8 #define mozilla_dom_AnimationPropertySegment_h
   9
  10 #include "mozilla/ComputedTimingFunction.h"
  11 #include "mozilla/Maybe.h"
  12 #include "mozilla/StyleAnimationValue.h"           // For AnimationValue
  13 #include "mozilla/dom/BaseKeyframeTypesBinding.h"  // For CompositeOperation
  14
  15 namespace mozilla {
  16
  17 struct AnimationPropertySegment {
  18   float mFromKey, mToKey;
  19   // NOTE: In the case that no keyframe for 0 or 1 offset is specified
  20   // the unit of mFromValue or mToValue is eUnit_Null.
  21   AnimationValue mFromValue, mToValue;
  22
  23   Maybe<ComputedTimingFunction> mTimingFunction;
  24   dom::CompositeOperation mFromComposite = dom::CompositeOperation::Replace;
  25   dom::CompositeOperation mToComposite = dom::CompositeOperation::Replace;
  26
  27   bool HasReplaceableValues() const {
  28     return HasReplaceableFromValue() && HasReplaceableToValue();
  29   }
  30
  31   bool HasReplaceableFromValue() const {
  32     return !mFromValue.IsNull() &&
  33            mFromComposite == dom::CompositeOperation::Replace;
  34   }
  35
  36   bool HasReplaceableToValue() const {
  37     return !mToValue.IsNull() &&
  38            mToComposite == dom::CompositeOperation::Replace;
  39   }
  40
  41   bool operator==(const AnimationPropertySegment& aOther) const {
  42     return mFromKey == aOther.mFromKey && mToKey == aOther.mToKey &&
  43            mFromValue == aOther.mFromValue && mToValue == aOther.mToValue &&
  44            mTimingFunction == aOther.mTimingFunction &&
  45            mFromComposite == aOther.mFromComposite &&
  46            mToComposite == aOther.mToComposite;
  47   }
  48   bool operator!=(const AnimationPropertySegment& aOther) const {
  49     return !(*this == aOther);
  50   }
  51 };
  52
  53 }  // namespace mozilla
  54
  55 #endif  // mozilla_dom_AnimationPropertySegment_h