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 #include "config.h"
32 #include "core/animation/css/CSSPendingAnimations.h"
33
34 #include "core/animation/Animation.h"
35 #include "core/animation/DocumentTimeline.h"
36 #include "core/frame/FrameView.h"
37
38 namespace WebCore {
39
add(Player * player)40 void CSSPendingAnimations::add(Player* player)
41 {
42 ASSERT(player->source()->isAnimation());
43 // The actual start time is either this value, or the time that
44 // this animation, or an animation that it is synchronized with
45 // is started on the compositor.
46 const double defaultStartTime = player->timeline().currentTime();
47 m_pending.append(std::make_pair(player, defaultStartTime));
48 }
49
startPendingAnimations()50 bool CSSPendingAnimations::startPendingAnimations()
51 {
52 bool startedOnCompositor = false;
53 for (size_t i = 0; i < m_pending.size(); ++i) {
54 if (m_pending[i].first->maybeStartAnimationOnCompositor())
55 startedOnCompositor = true;
56 }
57
58 // If any animations were started on the compositor, all remaining
59 // need to wait for a synchronized start time. Otherwise they may
60 // start immediately.
61 if (startedOnCompositor) {
62 for (size_t i = 0; i < m_pending.size(); ++i)
63 m_waitingForCompositorAnimationStart.append(m_pending[i].first);
64 } else {
65 for (size_t i = 0; i < m_pending.size(); ++i)
66 m_pending[i].first->setStartTime(m_pending[i].second);
67 }
68 m_pending.clear();
69
70 if (startedOnCompositor || m_waitingForCompositorAnimationStart.isEmpty())
71 return !m_waitingForCompositorAnimationStart.isEmpty();
72
73 // Check if we're still waiting for any compositor animations to start.
74 for (size_t i = 0; i < m_waitingForCompositorAnimationStart.size(); ++i) {
75 if (m_waitingForCompositorAnimationStart[i].get()->hasActiveAnimationsOnCompositor())
76 return true;
77 }
78
79 // If not, go ahead and start any animations that were waiting.
80 notifyCompositorAnimationStarted(monotonicallyIncreasingTime());
81 return false;
82 }
83
notifyCompositorAnimationStarted(double monotonicAnimationStartTime)84 void CSSPendingAnimations::notifyCompositorAnimationStarted(double monotonicAnimationStartTime)
85 {
86 for (size_t i = 0; i < m_waitingForCompositorAnimationStart.size(); ++i) {
87 Player* player = m_waitingForCompositorAnimationStart[i].get();
88 player->setStartTime(monotonicAnimationStartTime - player->timeline().zeroTime());
89 }
90
91 m_waitingForCompositorAnimationStart.clear();
92 }
93
94 } // namespace
95