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/*
* Copyright (C) 2013 Google Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following disclaimer
* in the documentation and/or other materials provided with the
* distribution.
* * Neither the name of Google Inc. nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef Timing_h
#define Timing_h
#include "platform/animation/TimingFunction.h"
#include "wtf/MathExtras.h"
#include "wtf/RefPtr.h"
namespace blink {
struct Timing {
enum FillMode {
FillModeAuto,
FillModeNone,
FillModeForwards,
FillModeBackwards,
FillModeBoth
};
static String fillModeString(FillMode);
enum PlaybackDirection {
PlaybackDirectionNormal,
PlaybackDirectionReverse,
PlaybackDirectionAlternate,
PlaybackDirectionAlternateReverse
};
static String playbackDirectionString(PlaybackDirection);
static const Timing& defaults()
{
DEFINE_STATIC_LOCAL(Timing, timing, ());
return timing;
}
Timing()
: startDelay(0)
, endDelay(0)
, fillMode(FillModeAuto)
, iterationStart(0)
, iterationCount(1)
, iterationDuration(std::numeric_limits<double>::quiet_NaN())
, playbackRate(1)
, direction(PlaybackDirectionNormal)
, timingFunction(LinearTimingFunction::shared())
{
}
void assertValid() const
{
ASSERT(std::isfinite(startDelay));
ASSERT(std::isfinite(endDelay));
ASSERT(std::isfinite(iterationStart));
ASSERT(iterationStart >= 0);
ASSERT(iterationCount >= 0);
ASSERT(std::isnan(iterationDuration) || iterationDuration >= 0);
ASSERT(std::isfinite(playbackRate));
ASSERT(timingFunction);
}
bool operator==(const Timing &other) const
{
return startDelay == other.startDelay && endDelay == other.endDelay
&& fillMode == other.fillMode && iterationStart == other.iterationStart
&& iterationCount == other.iterationCount && iterationDuration == other.iterationDuration
&& playbackRate == other.playbackRate && direction == other.direction;
}
bool operator!=(const Timing &other) const
{
return !(*this == other);
}
double startDelay;
double endDelay;
FillMode fillMode;
double iterationStart;
double iterationCount;
double iterationDuration;
double playbackRate;
PlaybackDirection direction;
RefPtr<TimingFunction> timingFunction;
};
} // namespace blink
#endif
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