Home | History | Annotate | Download | only in animation 
      1 /*
      2  * Copyright (C) 2013 Google Inc. All rights reserved.
      3  *
      4  * Redistribution and use in source and binary forms, with or without
      5  * modification, are permitted provided that the following conditions are
      6  * met:
      7  *
      8  *     * Redistributions of source code must retain the above copyright
      9  * notice, this list of conditions and the following disclaimer.
     10  *     * Redistributions in binary form must reproduce the above
     11  * copyright notice, this list of conditions and the following disclaimer
     12  * in the documentation and/or other materials provided with the
     13  * distribution.
     14  *     * Neither the name of Google Inc. nor the names of its
     15  * contributors may be used to endorse or promote products derived from
     16  * this software without specific prior written permission.
     17  *
     18  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
     19  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
     20  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
     21  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
     22  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
     23  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
     24  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     25  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     26  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     27  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
     28  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     29  */
     30 
     31 #ifndef AnimatableUnknown_h
     32 #define AnimatableUnknown_h
     33 
     34 #include "core/CSSValueKeywords.h"
     35 #include "core/animation/AnimatableValue.h"
     36 #include "core/css/CSSValuePool.h"
     37 
     38 namespace WebCore {
     39 
     40 class AnimatableUnknown FINAL : public AnimatableValue {
     41 public:
     42     virtual ~AnimatableUnknown() { }
     43 
     44     static PassRefPtrWillBeRawPtr<AnimatableUnknown> create(PassRefPtrWillBeRawPtr<CSSValue> value)
     45     {
     46         return adoptRefWillBeNoop(new AnimatableUnknown(value));
     47     }
     48     static PassRefPtrWillBeRawPtr<AnimatableUnknown> create(CSSValueID value)
     49     {
     50         return adoptRefWillBeNoop(new AnimatableUnknown(cssValuePool().createIdentifierValue(value)));
     51     }
     52 
     53     PassRefPtrWillBeRawPtr<CSSValue> toCSSValue() const { return m_value; }
     54     CSSValueID toCSSValueID() const { return toCSSPrimitiveValue(m_value.get())->getValueID(); }
     55 
     56     virtual void trace(Visitor* visitor) OVERRIDE
     57     {
     58         visitor->trace(m_value);
     59         AnimatableValue::trace(visitor);
     60     }
     61 
     62 protected:
     63     virtual PassRefPtrWillBeRawPtr<AnimatableValue> interpolateTo(const AnimatableValue* value, double fraction) const OVERRIDE
     64     {
     65         return defaultInterpolateTo(this, value, fraction);
     66     }
     67 
     68     virtual bool usesDefaultInterpolationWith(const AnimatableValue*) const OVERRIDE { return true; }
     69 
     70 private:
     71     explicit AnimatableUnknown(PassRefPtrWillBeRawPtr<CSSValue> value)
     72         : m_value(value)
     73     {
     74         ASSERT(m_value);
     75     }
     76     virtual AnimatableType type() const OVERRIDE { return TypeUnknown; }
     77     virtual bool equalTo(const AnimatableValue*) const OVERRIDE;
     78 
     79     const RefPtrWillBeMember<CSSValue> m_value;
     80 };
     81 
     82 DEFINE_ANIMATABLE_VALUE_TYPE_CASTS(AnimatableUnknown, isUnknown());
     83 
     84 inline bool AnimatableUnknown::equalTo(const AnimatableValue* value) const
     85 {
     86     const AnimatableUnknown* unknown = toAnimatableUnknown(value);
     87     return m_value == unknown->m_value || m_value->equals(*unknown->m_value);
     88 }
     89 
     90 } // namespace WebCore
     91 
     92 #endif // AnimatableUnknown_h
     93