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| 1 /* | |
| 2 * Copyright (c) 2014, 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 #include "sky/engine/core/animation/AnimationClock.h" | |
| 32 | |
| 33 #include <math.h> | |
| 34 #include "sky/engine/wtf/CurrentTime.h" | |
| 35 | |
| 36 namespace { | |
| 37 | |
| 38 // FIXME: This is an approximation of time between frames, used when | |
| 39 // ticking the animation clock outside of animation frame callbacks. | |
| 40 // Ideally this would be generated by the compositor. | |
| 41 const double approximateFrameTime = 1 / 60.0; | |
| 42 | |
| 43 } | |
| 44 | |
| 45 namespace blink { | |
| 46 | |
| 47 unsigned AnimationClock::s_currentTask = 0; | |
| 48 | |
| 49 void AnimationClock::updateTime(double time) | |
| 50 { | |
| 51 if (time > m_time) | |
| 52 m_time = time; | |
| 53 m_currentTask = s_currentTask; | |
| 54 } | |
| 55 | |
| 56 double AnimationClock::currentTime() | |
| 57 { | |
| 58 if (m_currentTask != s_currentTask) { | |
| 59 const double currentTime = m_monotonicallyIncreasingTime(); | |
| 60 if (m_time < currentTime) { | |
| 61 // Advance to the first estimated frame after the current time. | |
| 62 const double frameShift = fmod(currentTime - m_time, approximateFram
eTime); | |
| 63 const double newTime = currentTime + (approximateFrameTime - frameSh
ift); | |
| 64 ASSERT(newTime >= currentTime); | |
| 65 ASSERT(newTime <= currentTime + approximateFrameTime); | |
| 66 updateTime(newTime); | |
| 67 } else { | |
| 68 m_currentTask = s_currentTask; | |
| 69 } | |
| 70 } | |
| 71 return m_time; | |
| 72 } | |
| 73 | |
| 74 void AnimationClock::resetTimeForTesting() | |
| 75 { | |
| 76 m_time = 0; | |
| 77 m_currentTask = 0; | |
| 78 s_currentTask = 0; | |
| 79 } | |
| 80 | |
| 81 } | |
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Chromium Code Reviews
Issue 1229273004:
Remove Animations and Transitions. (Closed)
Base URL: https://github.com/domokit/mojo.git@master