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
32namespace WebKit {
33
34PassOwnPtr<WebActiveGestureAnimation> WebActiveGestureAnimation::createAtAnimationStart(PassOwnPtr<WebGestureCurve> curve, WebGestureCurveTarget* target)
35{
36    return adoptPtr(new WebActiveGestureAnimation(curve, target, 0, true));
37}
38
39PassOwnPtr<WebActiveGestureAnimation> WebActiveGestureAnimation::createWithTimeOffset(PassOwnPtr<WebGestureCurve> curve, WebGestureCurveTarget* target, double startTime)
40{
41    return adoptPtr(new WebActiveGestureAnimation(curve, target, startTime, false));
42}
43
44WebActiveGestureAnimation::~WebActiveGestureAnimation()
45{
46}
47
48WebActiveGestureAnimation::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
56bool 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