/* | |
* Copyright (C) 1999 Antti Koivisto (koivisto@kde.org) | |
* Copyright (C) 2004, 2005, 2006, 2007, 2008 Apple Inc. All rights reserved. | |
* | |
* This library is free software; you can redistribute it and/or | |
* modify it under the terms of the GNU Library General Public | |
* License as published by the Free Software Foundation; either | |
* version 2 of the License, or (at your option) any later version. | |
* | |
* This library is distributed in the hope that it will be useful, | |
* but WITHOUT ANY WARRANTY; without even the implied warranty of | |
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
* Library General Public License for more details. | |
* | |
* You should have received a copy of the GNU Library General Public License | |
* along with this library; see the file COPYING.LIB. If not, write to | |
* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, | |
* Boston, MA 02110-1301, USA. | |
* | |
*/ | |
#include "config.h" | |
#include "SkewTransformOperation.h" | |
namespace WebCore { | |
PassRefPtr<TransformOperation> SkewTransformOperation::blend(const TransformOperation* from, double progress, bool blendToIdentity) | |
{ | |
if (from && !from->isSameType(*this)) | |
return this; | |
if (blendToIdentity) | |
return SkewTransformOperation::create(m_angleX - m_angleX * progress, m_angleY - m_angleY * progress, m_type); | |
const SkewTransformOperation* fromOp = static_cast<const SkewTransformOperation*>(from); | |
double fromAngleX = fromOp ? fromOp->m_angleX : 0; | |
double fromAngleY = fromOp ? fromOp->m_angleY : 0; | |
return SkewTransformOperation::create(fromAngleX + (m_angleX - fromAngleX) * progress, fromAngleY + (m_angleY - fromAngleY) * progress, m_type); | |
} | |
} // namespace WebCore |