Upstream version 7.35.139.0
[platform/framework/web/crosswalk.git] / src / third_party / WebKit / Source / core / animation / css / CSSPendingAnimations.cpp
1 /*
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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 #include "core/page/Page.h"
38 #include "core/rendering/RenderLayer.h"
39
40 namespace WebCore {
41
42 void CSSPendingAnimations::add(AnimationPlayer* player)
43 {
44     ASSERT(player->source()->isAnimation());
45
46     Page* page = player->timeline()->document()->page();
47     bool visible = page && page->visibilityState() == PageVisibilityStateVisible;
48     if (!player->hasStartTime() && !visible) {
49         player->setStartTime(player->timeline()->currentTime());
50         return;
51     }
52
53     m_pending.append(player);
54 }
55
56 bool CSSPendingAnimations::startPendingAnimations()
57 {
58     bool startedOnCompositor = false;
59     for (size_t i = 0; i < m_pending.size(); ++i) {
60         if (m_pending[i]->maybeStartAnimationOnCompositor())
61             startedOnCompositor = true;
62     }
63
64     // If any animations were started on the compositor, all remaining
65     // need to wait for a synchronized start time. Otherwise they may
66     // start immediately.
67     if (startedOnCompositor) {
68         for (size_t i = 0; i < m_pending.size(); ++i)
69             m_waitingForCompositorAnimationStart.append(m_pending[i]);
70     } else {
71         for (size_t i = 0; i < m_pending.size(); ++i) {
72             m_pending[i]->setStartTime(m_pending[i]->timeline()->currentTime());
73             m_pending[i]->update();
74         }
75     }
76     m_pending.clear();
77
78     if (startedOnCompositor || m_waitingForCompositorAnimationStart.isEmpty())
79         return !m_waitingForCompositorAnimationStart.isEmpty();
80
81     // Check if we're still waiting for any compositor animations to start.
82     for (size_t i = 0; i < m_waitingForCompositorAnimationStart.size(); ++i) {
83         if (m_waitingForCompositorAnimationStart[i].get()->hasActiveAnimationsOnCompositor())
84             return true;
85     }
86
87     // If not, go ahead and start any animations that were waiting.
88     notifyCompositorAnimationStarted(monotonicallyIncreasingTime());
89     return false;
90 }
91
92 void CSSPendingAnimations::notifyCompositorAnimationStarted(double monotonicAnimationStartTime)
93 {
94     for (size_t i = 0; i < m_waitingForCompositorAnimationStart.size(); ++i) {
95         AnimationPlayer* player = m_waitingForCompositorAnimationStart[i].get();
96         player->setStartTime(monotonicAnimationStartTime - player->timeline()->zeroTime());
97         player->update();
98     }
99
100     m_waitingForCompositorAnimationStart.clear();
101 }
102
103 } // namespace