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      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/DocumentAnimations.h"
     33 
     34 #include "core/animation/ActiveAnimations.h"
     35 #include "core/animation/AnimationClock.h"
     36 #include "core/animation/DocumentTimeline.h"
     37 #include "core/dom/Document.h"
     38 #include "core/dom/Element.h"
     39 #include "core/dom/Node.h"
     40 #include "core/frame/Frame.h"
     41 #include "core/frame/FrameView.h"
     42 #include "core/rendering/RenderLayerCompositor.h"
     43 #include "core/rendering/RenderView.h"
     44 
     45 namespace WebCore {
     46 
     47 namespace {
     48 
     49 void updateAnimationTiming(Document& document, double monotonicAnimationStartTime)
     50 {
     51     document.animationClock().updateTime(monotonicAnimationStartTime);
     52     bool didTriggerStyleRecalc = document.timeline()->serviceAnimations();
     53     didTriggerStyleRecalc |= document.transitionTimeline()->serviceAnimations();
     54     if (!didTriggerStyleRecalc)
     55         document.animationClock().unfreeze();
     56 }
     57 
     58 void dispatchAnimationEvents(Document& document)
     59 {
     60     document.timeline()->dispatchEvents();
     61     document.transitionTimeline()->dispatchEvents();
     62 }
     63 
     64 void dispatchAnimationEventsAsync(Document& document)
     65 {
     66     document.timeline()->dispatchEventsAsync();
     67     document.transitionTimeline()->dispatchEventsAsync();
     68 }
     69 
     70 } // namespace
     71 
     72 void DocumentAnimations::serviceOnAnimationFrame(Document& document, double monotonicAnimationStartTime)
     73 {
     74     if (!RuntimeEnabledFeatures::webAnimationsCSSEnabled())
     75         return;
     76 
     77     updateAnimationTiming(document, monotonicAnimationStartTime);
     78     dispatchAnimationEvents(document);
     79 }
     80 
     81 void DocumentAnimations::serviceBeforeGetComputedStyle(Node& node, CSSPropertyID property)
     82 {
     83     if (!RuntimeEnabledFeatures::webAnimationsCSSEnabled())
     84         return;
     85 
     86     if (node.isElementNode()) {
     87         const Element& element = toElement(node);
     88         if (const ActiveAnimations* activeAnimations = element.activeAnimations()) {
     89             if (activeAnimations->hasActiveAnimationsOnCompositor(property))
     90                 updateAnimationTiming(element.document(), monotonicallyIncreasingTime());
     91         }
     92     }
     93 
     94 }
     95 
     96 void DocumentAnimations::serviceAfterStyleRecalc(Document& document)
     97 {
     98     if (!RuntimeEnabledFeatures::webAnimationsCSSEnabled())
     99         return;
    100 
    101     if (document.cssPendingAnimations().startPendingAnimations() && document.view())
    102         document.view()->scheduleAnimation();
    103 
    104     document.animationClock().unfreeze();
    105     dispatchAnimationEventsAsync(document);
    106 }
    107 
    108 } // namespace WebCore
    109