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| 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 AnimationClock_h | |
| 32 #define AnimationClock_h | |
| 33 | |
| 34 #include "wtf/CurrentTime.h" | |
| 35 #include "wtf/PassOwnPtr.h" | |
| 36 | |
| 37 namespace WebCore { | |
| 38 | |
| 39 class AnimationClock { | |
| 40 public: | |
| 41 static PassOwnPtr<AnimationClock> create(WTF::TimeFunction monotonicallyIncr
easingTime = WTF::monotonicallyIncreasingTime) | |
| 42 { | |
| 43 return adoptPtr(new AnimationClock(monotonicallyIncreasingTime)); | |
| 44 } | |
| 45 | |
| 46 void updateTime(double time) | |
| 47 { | |
| 48 ASSERT(m_time <= time); | |
| 49 m_time = time; | |
| 50 m_frozen = true; | |
| 51 } | |
| 52 | |
| 53 double currentTime() | |
| 54 { | |
| 55 if (!m_frozen) | |
| 56 updateTime(monotonicallyIncreasingTime()); | |
| 57 return m_time; | |
| 58 } | |
| 59 | |
| 60 void unfreeze() { m_frozen = false; } | |
| 61 | |
| 62 private: | |
| 63 AnimationClock(WTF::TimeFunction monotonicallyIncreasingTime) | |
| 64 : monotonicallyIncreasingTime(monotonicallyIncreasingTime) | |
| 65 , m_time(0) | |
| 66 , m_frozen(false) | |
| 67 { | |
| 68 } | |
| 69 WTF::TimeFunction monotonicallyIncreasingTime; | |
| 70 double m_time; | |
| 71 bool m_frozen; | |
| 72 }; | |
| 73 | |
| 74 } // namespace WebCore | |
| 75 | |
| 76 #endif // AnimationClock_h | |
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Chromium Code Reviews
Issue 30813004:
Revert r160071 "Web Animations: Implement AnimationClock and fix start time of animations" (Closed)
Base URL: svn://svn.chromium.org/blink/trunk