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1 // Copyright 2015 The Chromium Authors. All rights reserved. | 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 | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #ifndef NonInterpolableValue_h | 5 #ifndef NonInterpolableValue_h |
6 #define NonInterpolableValue_h | 6 #define NonInterpolableValue_h |
7 | 7 |
8 #include "platform/heap/Handle.h" | 8 #include "wtf/RefCounted.h" |
9 | 9 |
10 namespace blink { | 10 namespace blink { |
11 | 11 |
12 // Represents components of a PropertySpecificKeyframe's value that either do no
t change or 50% flip when interpolating with an adjacent value. | 12 // Represents components of a PropertySpecificKeyframe's value that either do no
t change or 50% flip when interpolating with an adjacent value. |
13 class NonInterpolableValue : public RefCounted<NonInterpolableValue> { | 13 class NonInterpolableValue : public RefCounted<NonInterpolableValue> { |
14 public: | 14 public: |
15 virtual ~NonInterpolableValue() { } | 15 virtual ~NonInterpolableValue() { } |
16 | 16 |
17 typedef const void* Type; | 17 typedef const void* Type; |
18 virtual Type getType() const = 0; | 18 virtual Type getType() const = 0; |
19 }; | 19 }; |
20 | 20 |
21 // These macros provide safe downcasts of NonInterpolableValue subclasses with d
ebug assertions. | 21 // These macros provide safe downcasts of NonInterpolableValue subclasses with d
ebug assertions. |
22 // See CSSValueInterpolationType.cpp for example usage. | 22 // See CSSValueInterpolationType.cpp for example usage. |
23 #define DECLARE_NON_INTERPOLABLE_VALUE_TYPE() \ | 23 #define DECLARE_NON_INTERPOLABLE_VALUE_TYPE() \ |
24 static Type staticType; \ | 24 static Type staticType; \ |
25 Type getType() const final { return staticType; } | 25 Type getType() const final { return staticType; } |
26 | 26 |
27 #define DEFINE_NON_INTERPOLABLE_VALUE_TYPE(T) \ | 27 #define DEFINE_NON_INTERPOLABLE_VALUE_TYPE(T) \ |
28 NonInterpolableValue::Type T::staticType = &T::staticType; | 28 NonInterpolableValue::Type T::staticType = &T::staticType; |
29 | 29 |
30 #define DEFINE_NON_INTERPOLABLE_VALUE_TYPE_CASTS(T) \ | 30 #define DEFINE_NON_INTERPOLABLE_VALUE_TYPE_CASTS(T) \ |
31 DEFINE_TYPE_CASTS(T, NonInterpolableValue, value, value->getType() == T::sta
ticType, value.getType() == T::staticType); | 31 DEFINE_TYPE_CASTS(T, NonInterpolableValue, value, value->getType() == T::sta
ticType, value.getType() == T::staticType); |
32 | 32 |
33 } // namespace blink | 33 } // namespace blink |
34 | 34 |
35 #endif // NonInterpolableValue_h | 35 #endif // NonInterpolableValue_h |
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