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| 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 WebScrollOffsetAnimationCurve_h | |
| 6 #define WebScrollOffsetAnimationCurve_h | |
| 7 | |
| 8 #include "WebCompositorAnimationCurve.h" | |
| 9 #include "WebFloatPoint.h" | |
| 10 | |
| 11 namespace blink { | |
| 12 | |
| 13 class WebScrollOffsetAnimationCurve : public WebCompositorAnimationCurve { | |
| 14 public: | |
| 15 virtual ~WebScrollOffsetAnimationCurve() { } | |
| 16 | |
| 17 enum ScrollDurationBehavior { | |
| 18 ScrollDurationDeltaBased = 0, | |
| 19 ScrollDurationConstant, | |
| 20 ScrollDurationInverseDelta | |
| 21 }; | |
| 22 | |
| 23 virtual void setInitialValue(WebFloatPoint) = 0; | |
| 24 virtual WebFloatPoint getValue(double time) const = 0; | |
| 25 virtual double duration() const = 0; | |
| 26 virtual WebFloatPoint targetValue() const = 0; | |
| 27 virtual void updateTarget(double time, WebFloatPoint newTarget) = 0; | |
| 28 }; | |
| 29 | |
| 30 } // namespace blink | |
| 31 | |
| 32 #endif // WebScrollOffsetAnimationCurve_h | |
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