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

   1 // Copyright 2015 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 NumberSVGInterpolation_h
   6 #define NumberSVGInterpolation_h
   7
   8 #include "core/animation/SVGInterpolation.h"
   9 #include "core/svg/SVGNumber.h"
  10 #include "core/svg/SVGNumberList.h"
  11
  12 namespace blink {
  13
  14 enum SVGNumberNegativeValuesMode {
  15     AllowNegativeNumbers,
  16     ForbidNegativeNumbers
  17 };
  18
  19 class NumberSVGInterpolation : public SVGInterpolation {
  20 public:
  21     typedef SVGNumberList ListType;
  22     typedef void NonInterpolableType;
  23
  24     static PassRefPtr<NumberSVGInterpolation> create(SVGPropertyBase* start, SVGPropertyBase* end, PassRefPtrWillBeRawPtr<SVGAnimatedPropertyBase> attribute, SVGNumberNegativeValuesMode negativeValuesMode)
  25     {
  26         return adoptRef(new NumberSVGInterpolation(toInterpolableValue(start), toInterpolableValue(end), attribute, negativeValuesMode));
  27     }
  28
  29     static bool canCreateFrom(SVGPropertyBase* value)
  30     {
  31         return true;
  32     }
  33
  34     PassRefPtrWillBeRawPtr<SVGPropertyBase> interpolatedValue(SVGElement&) const final
  35     {
  36         return fromInterpolableValue(*m_cachedValue, m_negativeValuesMode);
  37     }
  38
  39     static PassOwnPtr<InterpolableNumber> toInterpolableValue(SVGPropertyBase* value)
  40     {
  41         return InterpolableNumber::create(toSVGNumber(value)->value());
  42     }
  43
  44     static PassRefPtrWillBeRawPtr<SVGNumber> fromInterpolableValue(const InterpolableValue&, SVGNumberNegativeValuesMode = AllowNegativeNumbers);
  45
  46 private:
  47     NumberSVGInterpolation(PassOwnPtr<InterpolableValue> start, PassOwnPtr<InterpolableValue> end, PassRefPtrWillBeRawPtr<SVGAnimatedPropertyBase> attribute, SVGNumberNegativeValuesMode negativeValuesMode)
  48         : SVGInterpolation(start, end, attribute)
  49         , m_negativeValuesMode(negativeValuesMode)
  50     {
  51     }
  52
  53     const SVGNumberNegativeValuesMode m_negativeValuesMode;
  54 };
  55
  56 }
  57
  58 #endif // NumberSVGInterpolation_h