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 #include "config.h" 32 #include "core/animation/animatable/AnimatableVisibility.h" 33 34 namespace blink { 35 36 bool AnimatableVisibility::usesDefaultInterpolationWith(const AnimatableValue* value) const 37 { 38 EVisibility from = m_visibility; 39 EVisibility to = toAnimatableVisibility(value)->m_visibility; 40 return from != VISIBLE && to != VISIBLE; 41 } 42 43 PassRefPtrWillBeRawPtr<AnimatableValue> AnimatableVisibility::interpolateTo(const AnimatableValue* value, double fraction) const 44 { 45 EVisibility from = m_visibility; 46 EVisibility to = toAnimatableVisibility(value)->m_visibility; 47 if (from != VISIBLE && to != VISIBLE) 48 return defaultInterpolateTo(this, value, fraction); 49 if (fraction <= 0) 50 return takeConstRef(this); 51 if (fraction >= 1) 52 return takeConstRef(value); 53 return takeConstRef(from == VISIBLE ? this : value); 54 } 55 56 bool AnimatableVisibility::equalTo(const AnimatableValue* value) const 57 { 58 return m_visibility == toAnimatableVisibility(value)->m_visibility; 59 } 60 61 } // namespace blink 62
