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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 Timing_h
     32 #define Timing_h
     33 
     34 #include "core/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         FillModeNone,
     43         FillModeForwards,
     44         FillModeBackwards,
     45         FillModeBoth
     46     };
     47 
     48     enum PlaybackDirection {
     49         PlaybackDirectionNormal,
     50         PlaybackDirectionReverse,
     51         PlaybackDirectionAlternate,
     52         PlaybackDirectionAlternateReverse
     53     };
     54 
     55     Timing()
     56         : startDelay(0)
     57         , fillMode(FillModeForwards)
     58         , iterationStart(0)
     59         , iterationCount(1)
     60         , hasIterationDuration(false)
     61         , iterationDuration(0)
     62         , playbackRate(1)
     63         , direction(PlaybackDirectionNormal)
     64         , timingFunction(0)
     65     {
     66     }
     67 
     68     void assertValid() const
     69     {
     70         ASSERT(std::isfinite(startDelay));
     71         ASSERT(std::isfinite(iterationStart));
     72         ASSERT(iterationStart >= 0);
     73         ASSERT(iterationCount >= 0);
     74         ASSERT(iterationDuration >= 0);
     75         ASSERT(std::isfinite(playbackRate));
     76     }
     77 
     78     double startDelay;
     79     FillMode fillMode;
     80     double iterationStart;
     81     double iterationCount;
     82     bool hasIterationDuration;
     83     double iterationDuration;
     84     // FIXME: Add activeDuration.
     85     double playbackRate;
     86     PlaybackDirection direction;
     87     RefPtr<TimingFunction> timingFunction;
     88 
     89 };
     90 
     91 } // namespace WebCore
     92 
     93 #endif
     94