third_party/WebKit/Source/core/animation/LengthPairStyleInterpolation.h

   1 // Copyright 2014 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #ifndef LengthPairStyleInterpolation_h
   6 #define LengthPairStyleInterpolation_h
   7
   8 #include "core/CoreExport.h"
   9 #include "core/animation/StyleInterpolation.h"
  10 #include "platform/Length.h"
  11
  12 namespace blink {
  13
  14 class CORE_EXPORT LengthPairStyleInterpolation : public StyleInterpolation {
  15 public:
  16     static PassRefPtr<LengthPairStyleInterpolation> create(const CSSValue& start, const CSSValue& end, CSSPropertyID id, InterpolationRange range)
  17     {
  18         return adoptRef(new LengthPairStyleInterpolation(lengthPairToInterpolableValue(start), lengthPairToInterpolableValue(end), id, range));
  19     }
  20
  21     static bool canCreateFrom(const CSSValue&);
  22
  23     void apply(StyleResolverState&) const override;
  24
  25 private:
  26     LengthPairStyleInterpolation(PassOwnPtr<InterpolableValue> start, PassOwnPtr<InterpolableValue> end, CSSPropertyID id, InterpolationRange range)
  27         : StyleInterpolation(start, end, id), m_range(range)
  28     {
  29     }
  30
  31     static PassOwnPtr<InterpolableValue> lengthPairToInterpolableValue(const CSSValue&);
  32     static PassRefPtrWillBeRawPtr<CSSValue> interpolableValueToLengthPair(InterpolableValue*, InterpolationRange);
  33
  34     InterpolationRange m_range;
  35
  36     friend class LengthPairStyleInterpolationTest;
  37 };
  38
  39 } // namespace blink
  40
  41 #endif // LengthPairStyleInterpolation_h