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      1 /*
      2  * Copyright (C) 2012 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
      6  * are met:
      7  * 1.  Redistributions of source code must retain the above copyright
      8  *     notice, this list of conditions and the following disclaimer.
      9  * 2.  Redistributions in binary form must reproduce the above copyright
     10  *     notice, this list of conditions and the following disclaimer in the
     11  *     documentation and/or other materials provided with the distribution.
     12  *
     13  * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS'' AND ANY
     14  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
     15  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
     16  * DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS BE LIABLE FOR ANY
     17  * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
     18  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
     19  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
     20  * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     21  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
     22  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     23  */
     24 
     25 #ifndef WebAnimation_h
     26 #define WebAnimation_h
     27 
     28 #include "WebCommon.h"
     29 #include "WebNonCopyable.h"
     30 #include "WebPrivateOwnPtr.h"
     31 
     32 #if WEBKIT_IMPLEMENTATION
     33 #include <wtf/Forward.h>
     34 #endif
     35 
     36 namespace WebCore {
     37 class CCActiveAnimation;
     38 }
     39 
     40 namespace WebKit {
     41 
     42 class WebAnimationCurve;
     43 
     44 // A compositor driven animation.
     45 class WebAnimation {
     46 public:
     47     enum TargetProperty {
     48         TargetPropertyTransform = 0,
     49         TargetPropertyOpacity
     50     };
     51 
     52     virtual ~WebAnimation() { }
     53 
     54     // An id is effectively the animation's name, and it is not unique.
     55     virtual int id() = 0;
     56 
     57     virtual TargetProperty targetProperty() const = 0;
     58 
     59     // This is the number of times that the animation will play. If this
     60     // value is zero the animation will not play. If it is negative, then
     61     // the animation will loop indefinitely.
     62     virtual int iterations() const = 0;
     63     virtual void setIterations(int) = 0;
     64 
     65     virtual double startTime() const = 0;
     66     virtual void setStartTime(double monotonicTime) = 0;
     67 
     68     virtual double timeOffset() const = 0;
     69     virtual void setTimeOffset(double monotonicTime) = 0;
     70 
     71     // If alternatesDirection is true, on odd numbered iterations we reverse the curve.
     72     virtual bool alternatesDirection() const = 0;
     73     virtual void setAlternatesDirection(bool) = 0;
     74 };
     75 
     76 } // namespace WebKit
     77 
     78 #endif // WebAnimation_h
     79