| /* |
| * 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. |
| */ |
| |
| #include "config.h" |
| #include "core/animation/DocumentTimeline.h" |
| |
| #include "core/animation/ActiveAnimations.h" |
| #include "core/animation/AnimationClock.h" |
| #include "core/dom/Document.h" |
| #include "core/frame/FrameView.h" |
| #include "core/page/Page.h" |
| #include "platform/TraceEvent.h" |
| |
| namespace WebCore { |
| |
| // This value represents 1 frame at 30Hz plus a little bit of wiggle room. |
| // TODO: Plumb a nominal framerate through and derive this value from that. |
| const double DocumentTimeline::s_minimumDelay = 0.04; |
| |
| |
| PassRefPtr<DocumentTimeline> DocumentTimeline::create(Document* document, PassOwnPtr<PlatformTiming> timing) |
| { |
| return adoptRef(new DocumentTimeline(document, timing)); |
| } |
| |
| DocumentTimeline::DocumentTimeline(Document* document, PassOwnPtr<PlatformTiming> timing) |
| : m_zeroTime(nullValue()) |
| , m_document(document) |
| { |
| if (!timing) |
| m_timing = adoptPtr(new DocumentTimelineTiming(this)); |
| else |
| m_timing = timing; |
| |
| ASSERT(document); |
| } |
| |
| DocumentTimeline::~DocumentTimeline() |
| { |
| for (HashSet<AnimationPlayer*>::iterator it = m_players.begin(); it != m_players.end(); ++it) |
| (*it)->timelineDestroyed(); |
| } |
| |
| AnimationPlayer* DocumentTimeline::createAnimationPlayer(TimedItem* child) |
| { |
| RefPtr<AnimationPlayer> player = AnimationPlayer::create(*this, child); |
| AnimationPlayer* result = player.get(); |
| m_players.add(result); |
| setOutdatedAnimationPlayer(result); |
| return result; |
| } |
| |
| AnimationPlayer* DocumentTimeline::play(TimedItem* child) |
| { |
| if (!m_document) |
| return 0; |
| AnimationPlayer* player = createAnimationPlayer(child); |
| player->setStartTimeInternal(effectiveTime()); |
| m_document->compositorPendingAnimations().add(player); |
| return player; |
| } |
| |
| void DocumentTimeline::wake() |
| { |
| m_timing->serviceOnNextFrame(); |
| } |
| |
| void DocumentTimeline::serviceAnimations(AnimationPlayer::UpdateReason reason) |
| { |
| TRACE_EVENT0("webkit", "DocumentTimeline::serviceAnimations"); |
| |
| m_timing->cancelWake(); |
| m_hasOutdatedAnimationPlayer = false; |
| |
| double timeToNextEffect = std::numeric_limits<double>::infinity(); |
| Vector<AnimationPlayer*> players; |
| for (HashSet<RefPtr<AnimationPlayer> >::iterator it = m_playersNeedingUpdate.begin(); it != m_playersNeedingUpdate.end(); ++it) |
| players.append(it->get()); |
| |
| std::sort(players.begin(), players.end(), AnimationPlayer::hasLowerPriority); |
| |
| for (size_t i = 0; i < players.size(); ++i) { |
| AnimationPlayer* player = players[i]; |
| if (player->update(reason)) |
| timeToNextEffect = std::min(timeToNextEffect, player->timeToEffectChange()); |
| else |
| m_playersNeedingUpdate.remove(player); |
| } |
| |
| if (timeToNextEffect < s_minimumDelay) |
| m_timing->serviceOnNextFrame(); |
| else if (timeToNextEffect != std::numeric_limits<double>::infinity()) |
| m_timing->wakeAfter(timeToNextEffect - s_minimumDelay); |
| |
| ASSERT(!m_hasOutdatedAnimationPlayer); |
| } |
| |
| void DocumentTimeline::setZeroTime(double zeroTime) |
| { |
| ASSERT(isNull(m_zeroTime)); |
| m_zeroTime = zeroTime; |
| ASSERT(!isNull(m_zeroTime)); |
| serviceAnimations(AnimationPlayer::UpdateOnDemand); |
| } |
| |
| void DocumentTimeline::DocumentTimelineTiming::wakeAfter(double duration) |
| { |
| m_timer.startOneShot(duration, FROM_HERE); |
| } |
| |
| void DocumentTimeline::DocumentTimelineTiming::cancelWake() |
| { |
| m_timer.stop(); |
| } |
| |
| void DocumentTimeline::DocumentTimelineTiming::serviceOnNextFrame() |
| { |
| if (m_timeline->m_document && m_timeline->m_document->view()) |
| m_timeline->m_document->view()->scheduleAnimation(); |
| } |
| |
| double DocumentTimeline::currentTime(bool& isNull) |
| { |
| return currentTimeInternal(isNull) * 1000; |
| } |
| |
| double DocumentTimeline::currentTimeInternal(bool& isNull) |
| { |
| if (!m_document) { |
| isNull = true; |
| return std::numeric_limits<double>::quiet_NaN(); |
| } |
| double result = m_document->animationClock().currentTime() - m_zeroTime; |
| isNull = std::isnan(result); |
| return result; |
| } |
| |
| double DocumentTimeline::currentTime() |
| { |
| return currentTimeInternal() * 1000; |
| } |
| |
| double DocumentTimeline::currentTimeInternal() |
| { |
| bool isNull; |
| return currentTimeInternal(isNull); |
| } |
| |
| double DocumentTimeline::effectiveTime() |
| { |
| double time = currentTimeInternal(); |
| return std::isnan(time) ? 0 : time; |
| } |
| |
| void DocumentTimeline::pauseAnimationsForTesting(double pauseTime) |
| { |
| for (HashSet<RefPtr<AnimationPlayer> >::iterator it = m_playersNeedingUpdate.begin(); it != m_playersNeedingUpdate.end(); ++it) |
| (*it)->pauseForTesting(pauseTime); |
| serviceAnimations(AnimationPlayer::UpdateOnDemand); |
| } |
| |
| void DocumentTimeline::setOutdatedAnimationPlayer(AnimationPlayer* player) |
| { |
| m_playersNeedingUpdate.add(player); |
| m_hasOutdatedAnimationPlayer = true; |
| if (m_document && m_document->page() && !m_document->page()->animator().isServicingAnimations()) |
| m_timing->serviceOnNextFrame(); |
| } |
| |
| size_t DocumentTimeline::numberOfActiveAnimationsForTesting() const |
| { |
| // Includes all players whose directly associated timed items |
| // are current or in effect. |
| if (isNull(m_zeroTime)) |
| return 0; |
| size_t count = 0; |
| for (HashSet<RefPtr<AnimationPlayer> >::iterator it = m_playersNeedingUpdate.begin(); it != m_playersNeedingUpdate.end(); ++it) { |
| const TimedItem* timedItem = (*it)->source(); |
| if ((*it)->hasStartTime()) |
| count += (timedItem && (timedItem->isCurrent() || timedItem->isInEffect())); |
| } |
| return count; |
| } |
| |
| void DocumentTimeline::detachFromDocument() { |
| // FIXME: DocumentTimeline should keep Document alive. |
| m_document = 0; |
| } |
| |
| } // namespace |