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 Timing_h 32 #define Timing_h 33 34 #include "platform/animation/TimingFunction.h" 35 #include "wtf/MathExtras.h" 36 #include "wtf/RefPtr.h" 37 38 namespace WebCore { 39 40 struct Timing { 41 enum FillMode { 42 FillModeAuto, 43 FillModeNone, 44 FillModeForwards, 45 FillModeBackwards, 46 FillModeBoth 47 }; 48 49 enum PlaybackDirection { 50 PlaybackDirectionNormal, 51 PlaybackDirectionReverse, 52 PlaybackDirectionAlternate, 53 PlaybackDirectionAlternateReverse 54 }; 55 defaultsTiming56 static const Timing& defaults() 57 { 58 DEFINE_STATIC_LOCAL(Timing, timing, ()); 59 return timing; 60 } 61 TimingTiming62 Timing() 63 : startDelay(0) 64 , endDelay(0) 65 , fillMode(FillModeAuto) 66 , iterationStart(0) 67 , iterationCount(1) 68 , iterationDuration(std::numeric_limits<double>::quiet_NaN()) 69 , playbackRate(1) 70 , direction(PlaybackDirectionNormal) 71 , timingFunction(LinearTimingFunction::shared()) 72 { 73 } 74 assertValidTiming75 void assertValid() const 76 { 77 ASSERT(std::isfinite(startDelay)); 78 ASSERT(std::isfinite(endDelay)); 79 ASSERT(std::isfinite(iterationStart)); 80 ASSERT(iterationStart >= 0); 81 ASSERT(iterationCount >= 0); 82 ASSERT(std::isnan(iterationDuration) || iterationDuration >= 0); 83 ASSERT(std::isfinite(playbackRate)); 84 ASSERT(timingFunction); 85 } 86 87 double startDelay; 88 double endDelay; 89 FillMode fillMode; 90 double iterationStart; 91 double iterationCount; 92 double iterationDuration; 93 double playbackRate; 94 PlaybackDirection direction; 95 RefPtr<TimingFunction> timingFunction; 96 }; 97 98 } // namespace WebCore 99 100 #endif 101