Ejemplo n.º 1
0
double Animation::calculateTimeToEffectChange(bool forwards, double localTime, double timeToNextIteration) const
{
    const double start = startTimeInternal() + specifiedTiming().startDelay;
    const double end = start + activeDurationInternal();

    switch (phase()) {
    case PhaseBefore:
        ASSERT(start >= localTime);
        return forwards
            ? start - localTime
            : std::numeric_limits<double>::infinity();
    case PhaseActive:
        return 0;
    case PhaseAfter:
        ASSERT(localTime >= end);
        // If this Animation is still in effect then it will need to update
        // when its parent goes out of effect. We have no way of knowing when
        // that will be, however, so the parent will need to supply it.
        return forwards
            ? std::numeric_limits<double>::infinity()
            : localTime - end;
    default:
        ASSERT_NOT_REACHED();
        return std::numeric_limits<double>::infinity();
    }
}
Ejemplo n.º 2
0
bool AnimationPlayer::maybeStartAnimationOnCompositor()
{
    if (!canStartAnimationOnCompositor())
        return false;

    double startTime = timeline()->zeroTime() + startTimeInternal();
    double timeOffset = 0;
    if (std::isnan(startTime)) {
        timeOffset = currentTimeInternal();
    }
    return toAnimation(m_content.get())->maybeStartAnimationOnCompositor(startTime, timeOffset);
}
Ejemplo n.º 3
0
bool AnimationPlayer::maybeStartAnimationOnCompositor()
{
    if (!canStartAnimationOnCompositor())
        return false;

    bool reversed = m_playbackRate < 0;

    double startTime = timeline()->zeroTime() + startTimeInternal();
    if (reversed) {
        startTime -= sourceEnd() / fabs(m_playbackRate);
    }

    double timeOffset = 0;
    if (std::isnan(startTime)) {
        timeOffset = reversed ? sourceEnd() - currentTimeInternal() : currentTimeInternal();
        timeOffset = timeOffset / fabs(m_playbackRate);
    }
    ASSERT(m_compositorGroup != 0);
    return toAnimation(m_content.get())->maybeStartAnimationOnCompositor(m_compositorGroup, startTime, timeOffset, m_playbackRate);
}
Ejemplo n.º 4
0
double Animation::calculateTimeToEffectChange(bool forwards, double localTime, double timeToNextIteration) const
{
    const double start = startTimeInternal() + specifiedTiming().startDelay;
    const double end = start + activeDurationInternal();

    switch (phase()) {
    case PhaseBefore:
        ASSERT(start >= localTime);
        return forwards
            ? start - localTime
            : std::numeric_limits<double>::infinity();
    case PhaseActive:
        if (forwards && hasActiveAnimationsOnCompositor()) {
            ASSERT(specifiedTiming().playbackRate == 1);
            // Need service to apply fill / fire events.
            const double timeToEnd = end - localTime;
            if (hasEvents()) {
                return std::min(timeToEnd, timeToNextIteration);
            } else {
                return timeToEnd;
            }
        }
        return 0;
    case PhaseAfter:
        ASSERT(localTime >= end);
        // If this Animation is still in effect then it will need to update
        // when its parent goes out of effect. We have no way of knowing when
        // that will be, however, so the parent will need to supply it.
        return forwards
            ? std::numeric_limits<double>::infinity()
            : localTime - end;
    default:
        ASSERT_NOT_REACHED();
        return std::numeric_limits<double>::infinity();
    }
}