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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 #ifndef AnimationStack_h
     32 #define AnimationStack_h
     33 
     34 #include "core/animation/Animation.h"
     35 #include "core/animation/AnimationEffect.h"
     36 #include "core/animation/AnimationPlayer.h"
     37 #include "core/animation/SampledEffect.h"
     38 #include "platform/geometry/FloatBox.h"
     39 #include "wtf/HashSet.h"
     40 #include "wtf/Vector.h"
     41 
     42 namespace blink {
     43 
     44 class InertAnimation;
     45 
     46 class AnimationStack {
     47     DISALLOW_ALLOCATION();
     48     WTF_MAKE_NONCOPYABLE(AnimationStack);
     49 public:
     50     AnimationStack();
     51 
     52     void add(PassOwnPtrWillBeRawPtr<SampledEffect> effect) { m_effects.append(effect); }
     53     bool isEmpty() const { return m_effects.isEmpty(); }
     54     bool affects(CSSPropertyID) const;
     55     bool hasActiveAnimationsOnCompositor(CSSPropertyID) const;
     56     static WillBeHeapHashMap<CSSPropertyID, RefPtrWillBeMember<Interpolation> > activeInterpolations(AnimationStack*, const WillBeHeapVector<RawPtrWillBeMember<InertAnimation> >* newAnimations, const WillBeHeapHashSet<RawPtrWillBeMember<const AnimationPlayer> >* cancelledAnimationPlayers, Animation::Priority, double timelineCurrentTime);
     57 
     58     bool getAnimatedBoundingBox(FloatBox&, CSSPropertyID) const;
     59     void trace(Visitor*);
     60 
     61 private:
     62     void simplifyEffects();
     63     // Effects sorted by priority. Lower priority at the start of the list.
     64     WillBeHeapVector<OwnPtrWillBeMember<SampledEffect> > m_effects;
     65 
     66     friend class AnimationAnimationStackTest;
     67 };
     68 
     69 } // namespace blink
     70 
     71 #endif
     72