| /* |
| * 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/Player.h" |
| |
| #include "core/animation/DocumentTimeline.h" |
| #include "core/animation/TimedItem.h" |
| |
| namespace WebCore { |
| |
| PassRefPtr<Player> Player::create(DocumentTimeline* timeline, TimedItem* content) |
| { |
| ASSERT(timeline); |
| return adoptRef(new Player(timeline, content)); |
| } |
| |
| Player::Player(DocumentTimeline* timeline, TimedItem* content) |
| : m_pauseStartTime(nullValue()) |
| , m_playbackRate(1) |
| , m_timeDrift(0) |
| , m_startTime(effectiveTime(timeline->currentTime())) |
| , m_content(content) |
| , m_timeline(timeline) |
| { |
| ASSERT(m_startTime >= 0); |
| if (m_content) |
| m_content->attach(this); |
| update(); |
| } |
| |
| Player::~Player() |
| { |
| if (m_content) |
| m_content->detach(); |
| } |
| |
| double Player::currentTimeBeforeDrift() const |
| { |
| return (effectiveTime(m_timeline->currentTime()) - m_startTime) * m_playbackRate; |
| } |
| |
| double Player::pausedTimeDrift() const |
| { |
| ASSERT(paused()); |
| return currentTimeBeforeDrift() - m_pauseStartTime; |
| } |
| |
| double Player::timeDrift() const |
| { |
| return paused() ? pausedTimeDrift() : m_timeDrift; |
| } |
| |
| double Player::currentTime() const |
| { |
| return currentTimeBeforeDrift() - timeDrift(); |
| } |
| |
| bool Player::update() |
| { |
| if (!m_content) |
| return false; |
| |
| double newTime = isNull(m_timeline->currentTime()) ? nullValue() : currentTime(); |
| m_content->updateInheritedTime(newTime); |
| return m_content->isCurrent() || m_content->isInEffect(); |
| } |
| |
| void Player::cancel() |
| { |
| if (!m_content) |
| return; |
| |
| ASSERT(m_content->player() == this); |
| m_content->detach(); |
| m_content = 0; |
| } |
| |
| void Player::setCurrentTime(double seekTime) |
| { |
| if (paused()) |
| m_pauseStartTime = seekTime; |
| else |
| m_timeDrift = currentTimeBeforeDrift() - seekTime; |
| |
| update(); |
| } |
| |
| void Player::setPaused(bool newValue) |
| { |
| if (paused() == newValue) |
| return; |
| |
| if (newValue) |
| m_pauseStartTime = currentTime(); |
| else { |
| m_timeDrift = pausedTimeDrift(); |
| m_pauseStartTime = nullValue(); |
| } |
| } |
| |
| void Player::setPlaybackRate(double newRate) |
| { |
| double previousTime = currentTime(); |
| m_playbackRate = newRate; |
| setCurrentTime(previousTime); |
| } |
| |
| } // namespace |