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      1 /*
      2  * Copyright (C) 1999 Antti Koivisto (koivisto (at) kde.org)
      3  * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009 Apple Inc. All rights reserved.
      4  *
      5  * This library is free software; you can redistribute it and/or
      6  * modify it under the terms of the GNU Library General Public
      7  * License as published by the Free Software Foundation; either
      8  * version 2 of the License, or (at your option) any later version.
      9  *
     10  * This library is distributed in the hope that it will be useful,
     11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
     12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
     13  * Library General Public License for more details.
     14  *
     15  * You should have received a copy of the GNU Library General Public License
     16  * along with this library; see the file COPYING.LIB.  If not, write to
     17  * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
     18  * Boston, MA 02110-1301, USA.
     19  *
     20  */
     21 
     22 #include "config.h"
     23 #include "core/rendering/style/ShadowData.h"
     24 
     25 #include "platform/animation/AnimationUtilities.h"
     26 
     27 namespace blink {
     28 
     29 bool ShadowData::operator==(const ShadowData& o) const
     30 {
     31     return m_location == o.m_location
     32         && m_blur == o.m_blur
     33         && m_spread == o.m_spread
     34         && m_style == o.m_style
     35         && m_color == o.m_color;
     36 }
     37 
     38 ShadowData ShadowData::blend(const ShadowData& from, double progress) const
     39 {
     40     if (style() != from.style())
     41         return *this;
     42 
     43     return ShadowData(blink::blend(from.location(), location(), progress),
     44         clampTo(blink::blend(from.blur(), blur(), progress), 0.0f),
     45         blink::blend(from.spread(), spread(), progress),
     46         style(),
     47         blink::blend(from.color(), color(), progress));
     48 }
     49 
     50 } // namespace blink
     51