Home | History | Annotate | Download | only in support 
      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  *
      8  * 1.  Redistributions of source code must retain the above copyright
      9  *     notice, this list of conditions and the following disclaimer.
     10  * 2.  Redistributions in binary form must reproduce the above copyright
     11  *     notice, this list of conditions and the following disclaimer in the
     12  *     documentation and/or other materials provided with the distribution.
     13  *
     14  * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
     15  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
     16  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
     17  * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
     18  * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
     19  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
     20  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
     21  * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     22  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
     23  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     24  */
     25 
     26 #include "config.h"
     27 #include "core/platform/chromium/support/WebActiveGestureAnimation.h"
     28 
     29 #include "public/platform/WebGestureCurve.h"
     30 #include "public/platform/WebGestureCurveTarget.h"
     31 
     32 namespace WebKit {
     33 
     34 PassOwnPtr<WebActiveGestureAnimation> WebActiveGestureAnimation::createAtAnimationStart(PassOwnPtr<WebGestureCurve> curve, WebGestureCurveTarget* target)
     35 {
     36     return adoptPtr(new WebActiveGestureAnimation(curve, target, 0, true));
     37 }
     38 
     39 PassOwnPtr<WebActiveGestureAnimation> WebActiveGestureAnimation::createWithTimeOffset(PassOwnPtr<WebGestureCurve> curve, WebGestureCurveTarget* target, double startTime)
     40 {
     41     return adoptPtr(new WebActiveGestureAnimation(curve, target, startTime, false));
     42 }
     43 
     44 WebActiveGestureAnimation::~WebActiveGestureAnimation()
     45 {
     46 }
     47 
     48 WebActiveGestureAnimation::WebActiveGestureAnimation(PassOwnPtr<WebGestureCurve> curve, WebGestureCurveTarget* target, double startTime, bool waitingForFirstTick)
     49     : m_startTime(startTime)
     50     , m_waitingForFirstTick(waitingForFirstTick)
     51     , m_curve(curve)
     52     , m_target(target)
     53 {
     54 }
     55 
     56 bool WebActiveGestureAnimation::animate(double time)
     57 {
     58     if (m_waitingForFirstTick) {
     59         m_startTime = time;
     60         m_waitingForFirstTick = false;
     61     }
     62     // All WebGestureCurves assume zero-based time, so we subtract
     63     // the animation start time before passing to the curve.
     64     return m_curve->apply(time - m_startTime, m_target);
     65 }
     66 
     67 } // namespace WebKit
     68