
Snapshot from r126652 BUG= Review URL: https://chromiumcodereview.appspot.com/10828381 git-svn-id: svn://svn.chromium.org/chrome/trunk/src@153354 0039d316-1c4b-4281-b951-d872f2087c98
77 lines
1.8 KiB
C++
77 lines
1.8 KiB
C++
// Copyright 2012 The Chromium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#include "config.h"
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#include "CCTimingFunction.h"
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#include <wtf/OwnPtr.h>
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namespace {
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const double epsilon = 1e-6;
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} // namespace
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namespace WebCore {
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CCTimingFunction::CCTimingFunction()
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{
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}
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CCTimingFunction::~CCTimingFunction()
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{
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}
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double CCTimingFunction::duration() const
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{
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return 1.0;
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}
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PassOwnPtr<CCCubicBezierTimingFunction> CCCubicBezierTimingFunction::create(double x1, double y1, double x2, double y2)
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{
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return adoptPtr(new CCCubicBezierTimingFunction(x1, y1, x2, y2));
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}
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CCCubicBezierTimingFunction::CCCubicBezierTimingFunction(double x1, double y1, double x2, double y2)
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: m_curve(x1, y1, x2, y2)
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{
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}
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CCCubicBezierTimingFunction::~CCCubicBezierTimingFunction()
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{
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}
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float CCCubicBezierTimingFunction::getValue(double x) const
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{
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UnitBezier temp(m_curve);
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return static_cast<float>(temp.solve(x, epsilon));
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}
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PassOwnPtr<CCAnimationCurve> CCCubicBezierTimingFunction::clone() const
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{
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return adoptPtr(new CCCubicBezierTimingFunction(*this));
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}
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// These numbers come from http://www.w3.org/TR/css3-transitions/#transition-timing-function_tag.
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PassOwnPtr<CCTimingFunction> CCEaseTimingFunction::create()
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{
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return CCCubicBezierTimingFunction::create(0.25, 0.1, 0.25, 1);
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}
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PassOwnPtr<CCTimingFunction> CCEaseInTimingFunction::create()
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{
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return CCCubicBezierTimingFunction::create(0.42, 0, 1.0, 1);
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}
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PassOwnPtr<CCTimingFunction> CCEaseOutTimingFunction::create()
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{
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return CCCubicBezierTimingFunction::create(0, 0, 0.58, 1);
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}
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PassOwnPtr<CCTimingFunction> CCEaseInOutTimingFunction::create()
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{
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return CCCubicBezierTimingFunction::create(0.42, 0, 0.58, 1);
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}
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} // namespace WebCore
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